MECHANISM FOR THE UNIFICATION OF PROCESS SIGNALS.

The invention refers to a mechanism for the unification of process signals with a light channel arrangement, with that the process signals in binary form o von Signalquellen supplied and for purposes of the process control or process feedback control processed werden.

Prozesssteuereinriehtungen, as for example for Walzwçrke, work often with a sequential procedure as a function of binary Signaloder Sehaltzuständen of the associated sources, like switches, control members and dergleichen.

In addition such a process control equipment covers appropriate DetektionsmitteI at the signal sources for the statement of the binary Signaloder Sehaltzustandes in connection with 656,496 a mechanism to the unification of the signals in an evaluation, Steuerund rule station or several derselben.

Fig. 1 and 2 shows in this connection block diagrams of usual process signal uniting mechanisms. s the mechanism after Fig. 1 covers a data processing central station 1, an associated entrance control 2 and an adjustment in level 3, to which a majority is attached by signal channels with Messoder feeling contacts 41 to 4n. This for example Messoder of feeling contacts can be for the collection of the operating condition of a Stahlwalzwerkes. The adjustment in level 3 converts the comparatively high Steueroder signal voltages at the aforementioned contacts into lower voltage levels of for example 5 V, which are suitable for the processing in the central station 1. The binary process signals, in the example thus the switching signals of the contacts 41 to 4n, arrive over the adjustment in level at the entrance control 2, those -- beside actual Datenverarbeitungsund control functions -- by the central station I with control instructions for connecting the process signals through to the central station one supplies, in temporal sequence. The central station procures then as a function of these process signals the desired evaluation and/or Prozesssteuerung.

lin case of a rolling mill the arrangement of the signal sources and/or feeling contacts extends, for example over a length of I km and can cover several hundreds of such feeling contacts or similar control members into over the length of the plant of distributed arrangement. On the other hand is the data processing central station practice-borrow-proves at one of the processing unit removed place furnished, why for the signal connections between the Fühloder control members and the adjustment in level of the central station line often 5 of appropriate length necessary is. Because of the concentrated connection of numerous feeder lines to the adjustment in level the Einbeziehnng of new Fühloder Sehaltglieder in s5 the plant becomes labor-consuming with an extension or such a thing and schwierig.

For the solution of this problem one already divided the total number of for example to unite one hundred Fühloder switching elements into several groups and attached each of these groups to a uniting he local station, of where the binary process signals are then led by a channel to the central station. Such a mechanism is in Fig. 2 shown. There a majority of uniting he local act ions is 6 with one transmission control 61, an entrance control 62 and an adjustment in level each 63 vorgesehen.

The latter is connected with the Fühloder switching contacts 401 to 40n of the associated group and transfers the arriving, high signal voltage levels on suitable Ausgangspegel.

The entrance control 62 receives the level-adapted binary process signals in temporal sequence and leads these for transmission control 61, of where the signals in sequence at f a channel 10 given werden.

The data processing central station 1 is connected to a buffer memory 7, a Ausgangssteuess with an entrance control 3, rung 8 and a transmission control 9. The buffer memory 7 covers storage areas for the admission of the binary process signals of the Fühloder switching contacts 401 to 40n of one of the local act ions 6.

The channel 10ist connected with the transmission control 9, soft for its part the binary process signals of the local act ions 6 receives and these the Ansgangssteuerung 8 supplies. The latter is effective as a function of these binary signals in the way that in temporal sequence addresses are specified for the buffer memory 7. With appropriate Adressiernng of this memory the process signals are taken up to the Fühloder Schaltkontakteu of 401 storage areas assigned to 40n. The central station 1 receives then successively the binary process signals from the buffer memory 7 over the entrance control 2. the process signals from the local act ions 6 activated in each case thus successively to the buffer memory is taken up, while the central station 1 their Verarbeitungsund control functions due to that Fühlund tax contacts 401 to 40n assigned, in the buffer memory 7 contained process signals ausführt.

By setting-up of a majority of local act ions 6, which are distributed over the processing unit, e.g. the rolling mill, arranged, the distances between the Fühloder tax contacts 401 to 40n can be kept comparatively small and the associated in each case local station 6. Since in addition a majority is attached arrangement distributed by feeder lines to the associated local station 6 in each case, Anschlussarheiten for additional Fühloder of switching contacts turn out comparatively einfach.

A local station 6 of the aforementioned kind is furnished for a given maximum number by ansehliessbaren Fühloder tax contacts naturally in each case, and in the interest of a high-grade an equipment utilization becomes as complete a connection allocation of each local station as possible angestrebt.

If thus the number a local station of zuordenbaren Fühloder of switching contacts and/or the appropriate Verbindungsteitungen exceeds the maximum number of connections of this local station, the surplus feeder lines are assigned to another local station after possibility, from which comparatively Verbindungsund Anschlussanordnungeu complicated itself within the complete system as well as because of the larger distance to another local station gr& sere lengths for the surplus feeder lines result in. During the connection allocation of the Lokatstationen thus the maximum numbers of connections that a range must be co-ordinated in each case by Fühloder Sehaltkontakten zuordenbaren local station and the length of the feeder lines in the sense of a Aufwandsminimisierung, from which itself increased Arbeitsund expenditure of time for the production of the complete system ergibt.

In all other respects generally numerous sources of spurious signal are present such as engines, solenoid valves and such a thing in the range of a processing unit, for example a Walzwerkcs. The of it outgoing spurious signals with their steep signal slopes can arrive easily at the channel and at the admission of incorrect binary signals in the buffer memory 7 as well as further at a wrongly function of the central station and thus the process control altogether führen.

Task of the invention is dal1 it the creation of a process signal uniting mechanism, which represents an improved solution regarding the aforementioned problems. This solution is based on the selective inquiry majority from binary signal sources regarding its respective binary signal status with the help of a light pulse transmission by a light channel. In addition a light pulse is transmitted to a majority of associated binary signal sources from a source of borrowing by the channel and cine majority of light secondary arms. The latters are in such a way developed that a light pulse is reflected in each case, if see the source in a first signal status rules, while reflection is different in a second signal status of the source regarding reflection in first signal status. These reflection differences are detected by a light receptor, which takes up the reflected light pulses by the branch lines and the channel of the binary signal sources concerned. The overall length of the light transmission of the source of light by the Ubertragungskanal and the associated branch line to everyone of the binary signal sources as well as back by the branch line and the channel to the light receptor is measured different regarding the light transmission length for all other binary signal sources, so that each individual signal source can be identified by the associated total light transmission length clearly. The Identiflzierung is based on the difference of the entire Übertragnngszeiten, i.e. in each case between sending a light pulse and the receipt of a reflected impulse, whereby at the output signal of the light receptor also in each case the signal status of the reflecting signal source can be recognized. The appropriate data are then stored and for the evaluation and/or process control accessible gemacht.

During the invention solution, which marks itself by the characteristics of the patent claim 1, which is based on the managing basic idea, alone by the mechanism of a light channel, which is coupled by associated binary signal sources by the lines of branch of light with a majority, a process signal uniting mechanism with the following favourable characteristics is created:

It is void the necessity to attach a multiplicity of binary signal sources with usual cables in parallel connection to a central station how this is with usual Einriehtungen the case. By the arrangement of the lines of branch of borrowing in spatial proximity of the associated binary signal sources as well as the light channel, which are coupled with the signal sources over the branch lines, kanu the overall length of the light conductors in the comparison to the Gesarotlänge at usual cable connections for a plant of same extent to be substantially decreased. The inclusion of additional binary signal sources requires only the connection of further lines of branch of light at the channel on the one hand and to the additional signal sources on the other hand. During such an plant extension the mechanism of additional cable connections and their special interpretation is thus void regarding the source number and the connecting length, whereby compared with a usual structure at work and time substantially one saves. In addition to a large extent sensitivity to electrical spurious signals and thus appropriate sources of error for the entire are void funktion.

during the mechanism according to invention With a preferential execution form of the invention branchings with associated branch lines are in each case in given distances attached to the light channel, whereby latter length per same into a majority of transmission links one subdivides. Consequently the reflected light pulses arrive in each case with the light receptor with a given time difference, what simplifies ldentifizierung the signal sources substantially. Furthermore the binary signal sources can be trained with advantage in such a way the fact that reflection enters only in each case one of binary signal statuses of the source which for example “Ein-Zustand” is called. A time expensive clock rate kanu now in the way to be produced that the clock rate intervals it corresponds to the difference between dea time positions of the successive reflected light pulses and thus the presence or absence of a reflected light pulse at the Emplänger as a function of the time expensive pulses can be detected as characteristics for the presence of a first or second signal status that according to the leading posts identified signal sources. In each case with detection of the presence or absence of a reflected light pulse in such a leading post an appropriate signal value of the associated process signal is detected and stored in a register. If the detection of the presence or absence of a given amount of, for example 16, by ó5 light pulses is completed in each case, an associated memory is addressed and subjected with a Scbreibsignal, so that the appropriate binary signals to the Kennzeiehnung first or 656,496 of the second signal status of the signal sources concerned in each case one stores. A selection of the information must into the processing station during the length of time of the effectiveness of the write signal at the memory impossible werden.

This time interval is however in the comparison with a full work period so short that an impairment of the Auswerteoder control functions of the central processing unit impossible ist.

Therefore the selection of binary-coded data can according to the Signalzustäuden of the sources by the processing station werden.

by simple supply of the respective address signal effectuation from the processing station to the memory With another preferential execution form of the invention light pulses of a first and second wavelength are sent from appropriate sources of light to the binary signal sources. The latters are in such a way developed that the light pulses of first and/or second wavelength in each case with kesten signal status, which light pulses of the second wavelength are reflected against it in the second signal status of the signal source. The light receptor covers first and second photo detectors for the collection of the reflected light pulses of the first and/or second wavelength. A time expensive pulse is produced in each case as a function of an output signal of the second photo detector. As alternative it can be planned that a Zeitsteuerimpuls is produced by appropriate adjustment of everyone of the binary signal sources in the way that the light pulses of first wavelength with first signal status and the light pulses of second wavelength reflected with the second signal status of the signal sources become, whereby the output signals of the first and second photo detectors are evaluated. The presence of the first or second signal status of the sources knows then by determination of the output signal in each case the first photo detector as a function of one in this way produced time expensive pulse determined werden.

In each case two following each other with this execution form eliminated thus the production of a time expensive pulse as a function of the reflected light pulse of second wavelength or on the light pulses of first and second wavelength the necessity, the time intervals between to make each other alike for reflected light pulses of first wavelength as signs for the first signal status of each signal source. With this execution form the restriction is thus void, according to which the length of the sections of the light channel present between the individual signal sources must be each other alike, as this was with that preceding described execution form the case. The channel sections between the signal sources can be selected as briefly, as it with a distinction of the time differences between successive, reflected light pulses are compatible. Accordingly the overall length of the channel consisting typically of comparatively expensive light conductors and thus the expenditure of the entire mechanism can decreased werden.

Problem solving according to invention creates thus a process signal uniting mechanism, the one simple coupling of binary signal sources to a large extent independently of their number ermöglicht.

A further substantial advantage exists in the avoidance of sources of error, already mentioned, by outside electrical Störsignale.

Further characteristics and advantages of the invention are described auhand the remark examples represented in the designs. Here shows:

Fig. 1 and 2 in each case a block diagram of a usual process signal uniting mechanism, like already for the state of the art describes, Fig. 3 a block diagram of a first execution of a mechanism according to invention, Fig. 4 an example execution of a binary signal source, 656,496 6 as in the mechanism in accordance with Fig. 3 usable, in perspective representation, Fig. 5a and 5b a light distributor, usable in the mechanism in accordance with fG. 3, in different in each case operating conditions, Fig. 6 a Bloekdiagramm of the data processing central station with memory in accordance with Fig. 3 in the single structure, Fig. 7 a Bloekdiagramm of the single structure of an entrance output circuit in accordance with Fig. 3, Fig. 8 and 9 signal time diagrams for the impact of the Einriehtungsteile in accordance with Fig. 6 and 7, Fig. 10 a block diagram of a further execution form of a mechanism according to invention, Fig. 11 a perspektivisehe representation of a binary signal source, usable in the mechanism in accordance with Fig. 10, Fig. 12A in schematic representation a Lichtweiehe, usable in the mechanism in accordance with Fig. 10, Fig. 12B the device in accordance with Fig. 12A in the operating condition as light distributor, Fig. 13 a block diagram of a Speichersteuèrsehaltung, usable in the mechanism in accordance with Fig. 10, Fig. 14 a block diagram of an entrance output circuit, usable in the mechanism in accordance with fG. 10, Fig. 15 a perspektivisehe representation of a binary signal source for use in a further execution form of the invention and Fig. 16 a block diagram of a entrance Ausgangssehaltung for use in a further execution form of the Erfindung.

The mechanism after Fig. covers 3 a data processing central station 1, a Speiehersteuersehaltung I 1, an entrance output circuit 14, a Liehtweiehe 18, a light conductor 19 as channel as well as a majority of -- here for example 16 -- Groups 200 of binary (an out) signal sources. Each of these groups covers 16 binary signal sources 201 to 216, light branchings 401 to 416 as well as borrow Zweigleitut towards 501 to 516 and channel intermediate sectors 601 to 615 per same Länge.

The central station 1 leads the binary signals of the Simit reference to the Fig. 5a and 5b described. This light switch is connected by the channel 19 with the light branching 401 in the group 200 of binary signal sources of the first circuit stage. The branching 401 is arranged, for example in the s Näim of the signal source 20I one with a Walzwerkscinheit verbundcncm switches. The branching 401 is connected by the branch line 501 with the Sign ÂqueÂÂe 201. The branchings 401 to 416 are serially connected by the Zwisehenabsehnitte 601 to 615 of the Übertra o gungskanals with the branching 401 in sequence. The branching 416 is connected by the Zwisehenabsehnitt 616 with the branching 40I in the group of signal sources of 200 the next Sehaltungsstufe. The signal sources 202 to 216 are ever separately connected by branch lines 502 to 516 with the associated Abxs branching 402 to 416. Like below still in detail with reference to Fig. , reflects the signal sources 201 to 216 the borrowing impulses sent of the Qeulle 16 then in each case, if the signal source concerned is in the Ein-Zustand, during in the out condition in each case no reflection is described to 4 erfolgt.

The channel Zwisehenabschnitte 60I to 615 is limited with identical length, so that the time interval between sending a borrowing impulse of the source 16 up to reflection and the concerned is constant in each case the Si2s gnalquellen 201 to 216 and to the entering the borrowing receiver 17, taking place in temporal sequence, (time interval t). The absolute size of these time differences is in such a way selected that one is possible ldentifizierung the individual reflected light pulses, typically approximately in the Gr& microseconds unite SE of so. The length of the Zwisehenabschnitte 60I to 615 amounts to for a time interval calculation of the aforementioned kind about some meters. If thus the binary signal sources 201 to 216 are spatially concentrated arranged, the appropriate length of the Zwischcnabschnitte 601 to ss 615 can result as unwanted large. To Anpassungszweeken additional borrowing leader length can be inserted for example in coil form in this case. The length of the Zwischcnabschnitts 616 for the connection of the groups of signal sources of 200 amounts to for example the quadruple of the length of the Zwisehenabgnalquellen 201 to 216 together, around the process control ei4o longing CCIT 601. The time interval between the supply rener plant, for example a rolling mill too ermöglichen.

The Speiehersteuerschaltung 11 covers cine address selection circuit 12 and a memory 13. First determines from the central station 1 or the address signals received from the entrance Ausgangssehaltung 14 in the way that solas a ches signal can be supplied to the memory 13 in each case. The latter covers Speieherabsehnitte of for example 16 bits x 16 for the storage of the binary signals of the signal sources 201 to 216 in the 16 groups of signal sources 200. The Speieherabschnitte of for example 16 bits x 16 is needed for example for the admission of the binary signals of the 256 signal sources, lm case of a plant with for example 512 signal sources is according to Speieherabsehnitte for 16 bits x 32 erforderlich.

The entrance Ausgangssehaltung 14 covers an entrance output steering wheel attitude 15, a source of light 16 and one ss light receptor 17. The gate circuit 16 transfers in each case a light pulse from the source 16 and receives a signal from the receiver 17 as answer to a reflected light pulse, in order to supply from this an address signal of the memory of 13 and binary signals from the signal sources 201 to 216 as data for the memory 13. The source of borrowing I6 can cover a light emitting diode, a diode laser or such a thing. The light receptor 17 can be provided with a Avalanch photodiode or such a thing for example. The source of light 16 and the light receptor 17 are attached to a light switch 18, the light pulses 6s of the source 16 to the channel 19 as well as turned around from latter received light pulse to the receiver the 17 transfer. The Lichtweiehe 18 becomes below in detail inflected light pulse of the group of signal sources 200 of the first circuit stage the Lichtempfängcr 17 on the one hand and stating a reflected light pulse of the group of signal sources of 200 of the next circuit stage on the other hand represents in this way a Verzögcrungszeit, which the admission of the binary signals of the SignalqneIlengruppe 200 the first Sehaltungsstufe in the memory 13 assigned register 155 within this delay ermöglicht.

Now the sequence of functions of the Prozesssignal Zusammenführeinriehtung becomes besehrieben. First the entrance sales tax circuit 15 arranges a sending of a light pulse by the source of light 16. This impulse is led by the light switch I8 to the channel 19 and arrives far over the branching 401 and the branch line 501 at the signal source 201. Light pulse the running by the branching 401 arrives by the UbertragungskanalZwisehenabs¢hnitt 601 at the branching 402 as well as over the branch line 502 at the signal source 202. The light pulse is retarded accordingly to the signal source 202 concerning that to the signal source 201 around the double length of the intermediate sector 601 appropriate time interval. In appropriate way the light pulse arrives over the branchings 403 to 416 at the signal sources 203 to 216. If the signal source 201 is in the Ein-Zustand, then the light pulse is of it reflected and arrived over the branch line 501, the branching 401 and the channel 19 at the light switch 18 as well as of these far at the borrowing receiver I7.

The latter converts the light pulse into an appropriate elektri7 656,496 sches binary signal, to which at the entrance sales tax circuit 15 arrives. This again supplies appropriate binary signal (logical) to the Ein-Zustand of the signal source unity register 155. At this time the address selection circuit 12 of the central station 1 is zngeschaltet, so that the latter free s entrance to the memory 13 hat.

If the signal source 202 is in the Ein-Zustand, the light pulse of it reflected arrives after a delay interval of t according to the double length of the intermediate sector 601 bczüglich the light pulse of the Signallo pours to 201 at the light receptor 17. If the signal source 202 is not in the Ein-Zustand, no light pulse arrives at the receiver 17 at the time according to the delay interval of t. The entrance sales tax circuit 15 detects in each case the presence and/or Nichtis presence of the Ein-Zustandes at the signal sources 201 to 216 in this way by monitoring of the Signa! is entitled to 17 in the appropriate Zeitpnnkten at the exit of the light receptor. The appropriate binary signals are then stored in register 155. After this line-to-store transfer the address selection circuit 12 of the entrance output circuit 14 is connected, and contents of register 155 are taken up to a given section of the memory 13 determined by an appropriate address. This central station 1 here into a ready condition transferred, whereby a selection of the signals contained in memory 13 only is closed within one time interval, meanwhile the address selection circuit 12 the address signal of the entrance output circuit 14 the address signal of the entrance output circuit 14 for the admission of contents of register 155 into the memory 13 bestimmt.

The remark example of a binary signal source 201 gemEss fG. 4 represents a switch with a handle 21a, which is tiltable around an axle 21b. Mil the end of the handle 21a is connected a mirror 21c, which is located to Lichtzwcigleitung 501 in the swiveling position of the handle in accordance with Ein-Zustand of the signal source with the front surface dcr in contact and one over this branch line eintreffehden light pulse reflects. In suggested Sehwenkstellung of the handle strichliert is distant the mirror 21c from the 'forehead surface of the branch line 501, so that no reflection stattfindet.

In Fig. SA and 5b represented light switch 18 cover Stablinscn 181 to 183 as well as a mirror 184. In the operating condition in accordance with Fig. the light switch I8 the transmission of a ray of light supplied in accordance with arrow pi and/or P2 causes 5a by the lenses 181 and/or 182 to the mirror 184 and from here over the lens 183 to an ejected beam in accordance with arrow P3.

On the other hand the light switch in the Betriebsznstand causes in accordance with Fig. 5b the transmission of a ray of light by the lens 183 to reflection at the mirror, arriving in accordance with arrow P3, 184 in reverse direction. The borrowing switch works thus now as distributor, whereby a AusgangsIiehtstrahl results over the lens 181 in accordance with arrow pi and another output borrowing jet in accordance with arrow P2 over lens 182. With Anschlnss of the Lichtss 16 gcmäss Fig pour. 3 to the Strahlcngang gcmäss arrow pi and connection of the light receptor 17 to the path of rays in accordance with arrow P2 as well as connection of the end of the Übertragungskanais 19 to the path of rays in accordance with arrow P3 arrives thus a light pulse outgoing from the source 16 over lens 181 in such a way “o as by reflection at the mirror 184 and over lens 183 at the channel 19. Turned around from a signal source, for example to 201, reflected light pulse arrives by the channel 19 and over the path of rays P3 as well as lens 183, mirror 184 and lens 182 at the light receptor 17.

Now becomes on the basis of Fig. 6 and 7 structure and function of the Datenverarbeitungs Zcntralstation I with memory Stenerschaltung 11 and entrance sales tax circuit 15 described (see also Fig. 3).

In accordance with Fig. the memory gate circuit 11 essentially covers 6 the address selection circuit 12, the memory 13, an oscillator 111, a 16stelligen binary counter 112, a decoder 113 and an address coincidence detector 125. In accordance with Fig. the entrance sales tax circuit 15 essentially covers 7 a 20stelligen binary counter 151, a decoder 152, an impulse molder 153, register 155, a 16stelligen binary counter 156, a zero-detector 157 and a pulse circuit 158.

already mentioned The oscillator 111 produces a time expensive clock rate with a clock rate interval according to 1/16 of the Differenzbzw.

Deceleration time interval of t that through the QbertragungskanalZwischenabschnitte 601 to 615 between the branchings 401 to 416 light pulses transferred in accordance with Fig.3. This lntervallbemessung places naturally only one indication of example dar.

In particular the time expensive clock rate interval can be measured also according to a frame lying within the delay interval. The time expensive pulses are supplied to the 16stelligen binary counter 112, which supplies a transmitted signal for the 20stelligen binary counter 151 in each case if 16 time expensive pulses are counted in the counter 112. The counter 151 ranks then dic transmitted signals among the identification of the individual signal sources 201 to 216. For this the enumerating signals of the counter 151 are supplied to the decoder 152, produced more softly from this according to decoded signals TONS to TI9. The decoded signal TI9 is supplied to the 16stelligeu binary counter 156, which serves 200 for the successive identification of the groups of signal sources. For this the output signal of the counter becomes 156 as write address signal of the address selection circuit 12 in accordance with Fig. 6 zugeführt.

lu the described way can a 16stelliger counter 156 for a number from signal sources to 256 be used, during for example a 32stelliger counters for a Signalqucllenzahl to 512 and a 64stelliger counter for a signal source number until 1024 is possible usw.

Furthermore the Ansgangssignal of the counter 156 is supplied to the Nuildetektor 157, which determines a reaching of the zero-conditions at the counter 156 and from it a Nullsignal VOla high signal level derives. This Nullsignal is supplied to the pulse circuit 158, which converts comparatively for a long time the Nullsignal remaining on high signal level by temporal differentiation into a pulse-type signal. This pulse signal is supplied as control signal of the source of light 16, which as a function of it in each case after successive identification of the 16 signal sources 201 to 216 a Lichtilnpuls aussendet.

The decoded signal TON of the decoder 152 is supplied to register 155 as reset signal. The decoded signals TI to TI6 arrive ever at an entrance of an assigned from 16 and gates 154.

On the other hand the light receptor 17 converts of the signal sources the 201 to 216 reflected light pulses into one elek “trisehes signal each, wclches lmpulsformer 153 than in SI • gnaI is supplied. Those with more suitably lmpulsform provided signals arrive at the second entrance of and gates 154, so that itself at the exits of these gates of binary signals (/AusSignale) according to respective Signalbzw. Reflection condition of the signal sources 201 to 216 result in. These binary signals are stored in register 155 and then in form of appropriate dates of preparation into the memory 13 in accordance with Fig. 6 aufgenommen.

As from Fig. , the output signal of the counter 112 in the Deeoder 113 is evident to 6 is processed, and one of the decoded signals an entrance of a and gate 114 supplied. The other entrance of this gate becomes with a decoded signal Tl8 of the decoder 152 in accordance with Fig. 7 subjects. And gate 114 a read-only gift signal incoming goods for the memory 13 produces 656,496 8 accordingly, if the binary signals stored by the 16 signal sources 201 to 216 in the register 155 sind.

The address selection circuit 12 covers and gates 121 and 122 as well as an inverter 123 and a or gate I24. The decoded signal Tl8 of the decoder 152 in accordance with Fig. 7 one supplies to an entrance of and gate 122 as address selection signal and one supplies after logical inverting in the inverter 123 to an entrance of and gate 121. The other entrance of this gate receives an address signal from the data processing central station 1. the other entrance of and gate I22 becomes with a write address signal from the counter 156 in accordance with Fig. 7 beaufsehlagt. If the binary signals contained in register 155 are thus taken up to the memory 13 solIeri, by the decoded signal Tl8 present at high signal level released and gate 122, and gate 121 against it closed. And gate 122 supplies thus the address signal of the counter 156, to which over the or gate 124 at the memory 13 arrives. The binary signals in register 155 become into the memory 13 by the effect of the read-only gift signal supplied by and gate 114 aufgenommen.

If the decoded signal TI will receive 8 thereafter from the decoder 152, then and gate 121 is released and and gate 122 closed. Thus and gate 121 supplies the address signal of the central station 1, to which over the or gate 124 at the memory 13 arrives. Furthermore the address signal of the central station 1 arrives at the address coincidence detector 125, which the coincidence one of the central station erhaItenen address signal with the address signal intended for the release of the uniting mechanism supervised. If the detector 125 determines such a coincidence, it supplies a binary signal of high level to an entrance of and gates 116 and 120. At this time a return light of high signal level of the central station 1 is present, which return light is supplied to an entrance of and gates 116 and 120. The latter receives likewise the data signals from the memory 13. And gate 120 accordingly transfers the data signals as a function of high signal level of the address coincidence detection signal and the return light from the memory 13 to a data bus 126.

On the other hand an at the output answered in the negative or gate becomes 130 (NOR) with the deeodierten signals TI7 and TI8 in accordance with Fig. 7 subjects. With the exit of the gate 130 an entrance of a and gate 116 is connected, to which with the decoded signals TI7 and TI8 is in all other respects subjected and as a function of it a binary signal of high level to the set input of a bistabile trigger stage 118 supplies. An at the output answered in the negative and gate 129 becomes with the Adresskoinzidenztung 158 converts this signal into an appropriate lmpulsform and supplies it to the source of light 16. The latter becomes thereby the delivery of a light pulse in accordance with line (A) in Fig. 8 arranges. This light pulse becomes by the channel s I9 and the Liehtweiehe 18 in accordance with Fig. to 3 at the branching 401 led, and the branched light pulse arrives to 501 at the signal source 201 over the branch line. The remaining light pulse at the branching 401 arrives by the ÜbertragungskanaI intermediate sector 60I at the next branching 402, where l0 is led again a Lichtilnpuls across the Zweigleituug 502 to the second signal source 202. Accordingly the derivative of further borrowing impulses takes place to the signal sources 203 to 216 at the sew-following branchings 403 to 416.

With signal source 201 in the out condition and with xs mirror 21c of this signal source distant from the front surface of the branch line 501 no borrowing reflection takes place back into the branch line 501. In the reverse signal status of the source 201, i.e. with mirror 21c in contact with the front surface of the branch line 501, the arriving light pulse is reflected and arrived the branch line 501, the branching 401 and the channel I9 at the light switch 18 as well as at the receiver 17. In the same way a reflection at the second signal source 202 steps as a function of their Ein-Zustand into feature, so that at the receiver 17 5 after the delay interval t concerning the procedure with the signal source 201 a reflected light pulse arrives. Appropriate is valid for the procedure at the signal source 203 with a delay interval 2t as well as for the following signal sources 204 to 216 with in each case entire VerzögerungsintervalI increasing by the amount t, so that itself for the reflected light pulses at the receiver altogether a signal sequence in accordance with line (B) in Fig. 8 ergibt.

The electrical signals produced by the receiver i7 from the arriving light pulses become after binärisierender shaping in more lmpulsformer 153 in accordance with Fig. 7 and gates 154 supplied. At this time the counter 151 enumerated the transmitted signals after the successive time intervals t. The counter output signal processed in the decoder 152 serves I55 for the resetting of the register. Deco the “o dierten signals TI to Tl6 von Décoder 152 cause then the release per one of and gates 154, whose everyone supplies a binary signal according to the signal status of the associated signal sources 201 to 216. These binary signals are stored in register 155 and immediately the memory 13 zugeführt.

The counter I56 has its zeroing and at this time erreicht.

Since the decoded signal TI8 of the decoder 152 is present at this time, the address selection attitude becomes 12 in accordance with Fig. 6 of the entrance sales tax circuit 15 connected. The detection signal and the return light subject. In accordance with the memory becomes 13 in such a way in from Fig. line (A), gezeigausgangsseitig and gate 129 answered 9 in the negative, subjected with its output signal the reset input of the bistabile trigger stage 118. When setting the trigger stage 118 by appropriate signal statuses at the exits of the gates 116 and 129 the entrance of a nachgeordenten delay circuit 119 receives high signal level. Thereby it is reached that after appearance of the return light a sufficient delay up to the transmission of the data signals on the data bus eintritt.

The delay circuit 119 gives for this the setting signal to the trigger stage 118 as repeating signal to the data bus 126. n0 the central station 1 takes over the data signals supplied by the gate 120 if this repeating signal after the return light eintrifft.

The impact now still becomes on the basis the signal time diagrams in accordance with Fig. 8 and 9 describes. In the starting situation LV all counters are set to zero. The zero-detector 157 in accordance with Fig. thus the zero state of the counter 156 for his part a Nullsignal of high signal level determines and supplies 7. The PulsschaItcn way gcsteuert in such a manner that the partitions of the zero address can be determined by the output counting signal of the counter 156. The binary signals in accordance with signal statuses of the signal sources 201 to 216 in the group of signal sources 200 of the first circuit stage become then into the aforementioned partitions eingegeben.

And gate 116 is released, if no decoded signals TI7 and Tl8 of the decoder 152 are present. The return light in accordance with line (B) in Fig. 9 now the Hoehpegel coincidence Detektionssignal of address coincidence detector 125 becomes by the central station 1 and. The trigger stage 118 is set by the high level binary signal by and gate 116, while the high level signal retards 119 a time interval given by this trigger stage in the circuit around wird.

The output signal thus retarded arrives over the data bus I26 at the central station I as answer signal in accordance with line (DI in Fig. 9. Purpose of the trigger stage 118 is it to supply the central station also then with the data signals of the memory 13 and with that 656,496 answer signal if the decoded signal will receive TI 7, i.e. in the case of the occurrence of the Bereitschaftssignal3 in the temporal final range of the decoded signal TI6. la this case solite D s Verzögeruugsintervall of the circuit 119 more briefly than the lmpulsdauer deeodierten signal .s the TI7 to be adjusted. The central station I is shifted by the repeating signal in readiness for the admission of the data signals of the memory 13. If on the other hand the decoded signal TI8 is supplied after the decoded signal Tl7 by the decoder 152, then the address selection circuit 12 t0 is switched for the selection the roll of the central station of the received address signal, at this time from the central station the address signal for the control of the zero-partition in the memory 13 will receive. The binary signals of both signal levels and/or both logical signal values of dei " group of signal sources of the first circuit stage become then of the memory 13 badly " and gate 120 in follow vorbesehriebencn the signal constellation the central station I übertragen.

If then from the decoder 152 the decoded signal TI9 attftritt ago, the counter 156 implements derngelnäss a counting, with which the next address of the memory 13 is specified. Because the decoded signal TI8 is not present at this time yet, the address selection circuit 12 is still connected dev entrance output steering wheel attitude 15. With the occurrence of the decoded signal TON of the decoder 152 ago the Regi is reset “, 5 ster 155. Wcnn the deeodierten Signalc TI to Tl6 arise, cause and gate 154 dic Einspcicherung of the binary signals in accordance with the Signalzustäuden of the group of signal sources of 200 the next Schaltungsstufc into register 155.

These binary signals are then transferred from register 155 into the memory 13 and far into the central station 1, like preceding besehrieben.

Into dei " descriptive way reflected light pulses step ges close-closing that on the channel 19 and the Zwisehenabsehnitten 601 to 615 only with contact and/or a Sign lzustand the signal sources 201 to 216 into feature with the available execution form, whereby the detection of the QucllenSignalzustände is made possible within successive frames. If now into such a plant zusätzlichc binary signal sources are to be inserted, then additional light branchings are within the ÜbertragungskanaI Zwisehenabschnitte to insert and by associated branch lines with the additional signal sources connect according to. In this way switched cine plant extension äusscrst itself cinfach.

If the interval between neighbouring signal sources, for example 203 and 204, becomes unwanted or inadmissibly larger than the remaining intervals, then the optical length of the Zwisehenabschnitte 601 to 615 in agreement with the interval between the questionable pair of signal sources can be cht gcbi. On the other hand it is uch possible, the optical length of the intermediate sector of the questionable branchings and/or signal sources, for example thus 203 and 204, accordingly einern ganzzahligcn multiples, for example the Zweil'achert of the optical to select [_finge of the remaining intermediate sectors. Then the Laufzcit of the Lichtiml” ulse over these amounts to between bschnitt, for example thus the intermediate sector 603 an appropriate multiple of the running time over the other intermediate sectors. Since however register 155 for the Aufnahmc of a Binärsignalwertcs is furnished as a function of the Zeitstcuerpnlscn at each time interval t, logic one arrives to 155 according to existing light pulse reflection simply in one of the next following storage locations of the Regiù, lors, whereby only mentioned a number of Speicherplätzcn, dependent on the Vielrachcn, is jumped over. This can “ UF simple way by use of a register 155 with larger Stufenbzw. Speiclaerplatzzahl to be considered, for example thus such with 17 Bitstufen.

With the execution form after the Fig. 3 to 9 the length of the intermediate sectors 601 to 615 had been accepted first as agreeing, likewise that of the branch lines 501 to 516 to the signal sources 201 to 216, so that agreeing time differences for the Lichtimpulsreflcxion of the signal sources mentioned resulted. Thus the disadvantage results that the length of additionally einznfügenden intermediate sectors and branch lines are brought with the length of the already existing intermediate sectors 601 to 615 in agreement muss.

With in the block diagram in accordance with Fig. 10 represented execution form can be identified the individual Signalqucllen also with different optical length del to " different feeder lines perfectly. For this the entrance output circuit 22 covers a entrance exit Steuersch ltung 23, a first source of light 24 for sending a light pulse of first wavelength left, a second source of light 25 for sending a Lichtimpulscs of second wavelength L2, a first light receptor of 26 light pulses of first wavelength reflected for the receipt as well as a second light receptor 27 fur the receipt of light pulses of second wavelength. The sources of light 24 and 25 can be developed with light emitting diode or laser diode. The light receptors 26 and 27 can be accordingly with a Avalaneh photodiode and an optical filter for don selective passage of light pulses in each case first and/or second Wellcnlängc developed. The light pulses of first and second wavelength of the sources of light 24 and 25 are zusammengcführt in a Lichtüberlagerei 28 and to arrive over a light switch 29 at the channel 19.

The ausgcsendeten light pulses arrive again from the channel 19 by branchings 401 to 416 and branch lines 901 to 916 at binary signal sources 701 to 716 of a group of signal sources of 700 of the first circuit stage. These signal sources are constructed that in the out condition a I.ichtimpuls of first wavelength does not reflect in each case, in the Ein-Zustand however are in such a way reflected, while a light pulse of second wavelength is reflected generally independently of the signal status of the sources. If thus for example the source is 701 in the out condition, Lichtilnpulse of second wavelength are thus only reflected, while in the Ein-Zustand the light pulses of both wavelengths are reflected. The reflected light pulses arrive the Zweiglcitungen, for example thus to branch line 901, back at the branchings, for example thus branching 401, and sodmm by the Übcrtragungskanal 19 and the light switch 29 at a borrowing divisor 30. The latter separates the light pulses of first and second wavelength, so that first arrive at the light receptor 26 and latter at the light receptor 27. These receivers produce appropriate electrical signals for the entrance expensive circuit 23 from the arriving, ret'lcktierten light pulses. The latter determines thereby the respective signal status of the waves 701 to 716, whereby the signal serves second wavelength of the receiver 27 in each case according to a reflected light pulse as time expensive pulse independent of the signal status of the sources. Furthermore the circuit 23 is subjected to the receiver 26 with signals according to the reflected light pulses of first wavelength and can determine thereby signal status on the basis the signal existing with a time expensive pulse according to a reflected light pulse of first wavelength. The appropriate binary signals like also appropriate address signals essentially arrive from the circuit 23 at the memory gate circuit 11, those the same structure as the appropriate circuit in accordance with Fig. 3 has kann.

In Fig. 11 dàrgestellte signal source 701 covers a handle 70a as well as a Spiege attached at the end of the Handgrifçs (70c tiltable around an axle 70b, älmlieh the 656,496 signal source 201 in accordance with Fig. 4, as well as furthermore the mirror 70c assigned filter 70d. The characteristic of this filter is in such a way laid out that only light pulses of first wavelength transfer 901 from the branch line werden.

Furthermore the final section of the branch line 901 covers 2 branch sections 90a and 90b, which extend to each other parallel. These branch sections can be formed by isolating an optical fiber bundle on a short length section and appropriate treatment as well as foremen and summarizing of the appropriate fibers. The Stirnfläo che of the branch section 90a is because of the filter 70d with the Ein-Zustand of the signal source 701, while the front surface of the branch section 90b is firmly with a filter 70f and a mirror 70e provided. The characteristic of the filter 70f is appropriate for passage only of light pulses of second wavelength. The light pulses of second wavelength are always reflected accordingly over the branch line 901, independently of the signal status of the source. With the out condition of the source, strichliert suggested in Fig. 11, is only reflected the light pulses of second wavelength. In the Ein-Zustand the filter 70d is because of the front surface of the branch section 90a, so that reflects light pulses of first wavelength at the mirror 70c werden.

In accordance with Fig. 12A covers the light hererodyne 28 staff lenses 281 to 283, a prism 284 and an interference film filter 285.

The latter reflects light pulses of first wavelength, lets however light pulses through of second wavelength. If thus light pulses of first wavelength in the path of rays P4 arrive, these arrive over lens 281 and prism 284 at the filter 285 and are reflected here. The reflected light pulses arrive over lens 283 into the path of rays P6. In the path of rays P5 arriving borrowing impulses of second wavelength arrive over lens 282 at the prism 284, by the filter 285 are let through and step over lens 283 in the path of rays P6 aus.

By Ansehluss of the source of light 24 to the path of rays P4 and the source of light 25 to the path of rays P5 thus the light pulses of first and second wavelength of the sources of light 24 and 25 in the hererodyne 28 become zusammengeführt.

A device of same structure as the hererodyne 28 can also in accordance with Fig. 12B as light columns to be used. Here light pulses of first and second wavelength enter 283 at the prism 284 the path of rays P6 and arrive together over lens. The impulses of first wavelength are only reflected now at the filter 285 and to arrive over lens 281 into the path of rays P4. The impulses of second wavelength arrive over filter 284 without reflection over lens 282 into the path of rays P5. In accordance with Fig. 10 are now the light switch 29 attached to the path of rays P6, the light receptor 26 at the Strahtengang P4 and the light receptor 27 to the path of rays P5. From the overlaid lmpulsen first and second wavelength of the switch 29 thus only those at the receiver 26 and those second wavelength at the receiver 27.

arrives to first wavelength For the Sehaltungsaufbau of the memory gate circuit 11 and the entrance sales tax circuit 23 in accordance with Fig.

is valid regarding the Fig. 13 and 14 the following:

The memory Stcuerschaltung 11 in accordance with Fig. essentially corresponds to 13 to the circuit 11 in accordance with Fig. 6, however except delay circuits 126 and 127 as well as a pulse circuit 128, those in place of the oscillator 111, the counter 112 and the decoder 1 I3 in accordance with Fig. 6 to step and below in the einzeinen beschriehen werden.

In accordance with Fig. the entrance sales tax circuit of 23 impulse molders 231 and 232, a Schiebercgister 233, a delay circuit 234, a 16stelligen counter 235, a zero-detector 236, a rise detector 237, a far covers 14 ₜ, 5 ren 16stelligen counter 238, one “all in” - detector 239 and a pulse circuit 240. The pulse molder 231 receives binary signals according to the reflected Lichtimpnlsen first wavelength from the receiver 26, while the lmpulsformer 232 time expensive signals in accordance with the reflected light pulses of second wavelength from the receiver receives 27. The lmpulsformer 231 the received in from signals and supplies this binärisiert the shift register 233, soft for example is appropriate for 16 bit stages. The impulse molder 232 binärisiert the Zeitsteuerpuise and supplies these by way of the Verzögerungssehaltung 234 to the shift register 233. This delay circuit causes the safe storing of the binary signals of more lmpulsformer 231 in each case within the rise time section of the Zeitstcuerpuise. The output signals of the shift register 233 become the memory 13 in accordance with Fig. 13 as dates of preparation zugeführt.

That for example 15stellige counter 235 receives the Zeitsteuerpuise from the Verzögerungssehaltung 234, so that repeats 16 time expensive pulses in each case be counted can. This bit number corresponds the Stufenzahl of the shift register. The output signal of the counter 235 arrives at the Nulldetcktor 236, which determines the zeroing and of the counter in each case. This means in each case the count of all time expensive pulses according to the 16 Signalqucllen 701 to 716. The appropriate Nullsignal arrives at the memory gate circuit 11 in accordance with Fig. 13 as well as to the rise detector 237, which tstellt now the time period of the waste of the Nullsignals from high to low signal level more fer, and heads for the following counter 238. The latter covers likewise 16 bit stages, so that the shift register 233 knows the addresses in each case when storing one of the binary signals of the signal sources 701 to 716 incrementing. For this the output signal of the counter 238 of the memory gate circuit 11 is supplied as address signal. Furthermore this output signal supplied, its output signal is arrived to the detector 239 again at the pulse circuit 240, so that this output signal hnpulse comparatively small width is converted. This signal arrived then at the sources of light 24 and the counter 238 can be extended according to the number of existing signal sources, for example on 32 bit stages for 512 Signalquellen.

In accordance with Fig. the Nullsignal of the detector 236 arrives to 13 over more lnverter 131 at and circuit 116 and at the Verzögerungsschaltuñg 126. First sets the trigger stage 118 with existing return light of the central station 1 as well as in absence of the NuIIsignals and the address coincidence signal of the detector 125. On the other hand the retarded Nullsiguai of the circuit 126 heads for ago the address selection circuit 12 and works thus than address selection signal. The delay circuit 121 compensates one time interval after arrival of the data of the memory 13 at the data bus up to the Einspcichern into the central station 1, if the trigger stage 118 were set directly before occurrence of the Nullsignals. Since storing of the data into the central station is completed at expiration of the Verzögerungsintervallz of the Nullsignals, the address entrance of the memory 13 is connected now the circuit 11. The Verzögerungssch ltung 127 causes cine attitude of timing in the way that the Nullsignal with the address signal to the memory 13 coincide temporally kann.

After delay interval of the Nnllsignals dent due to the delay circuit 127 supplies the pulse circuit 128 a write Freigabesigual for the assumption of the data of the shift register 233 to the memory 13. To emphasize it is here that the Verzögerungsintcrvall of the reflected Lichtimpulsc between the Signalquellcu 701 to 716 more largely than the delay intervals of the circuits 126 and 127 its sollen.

The sequence of functions becomes now on the basis the Fig. 10 to 14 described. For this it is angenolnmen that in the starting situation of the counters 238 takes his maximum conditions (all exits in the one state). The detector 239 supplies thus an appropriate detection signal to the Pulsschaltuug 240. The latter supplies daraurhin an appropriate pulse signal comparatively small width to the appropriate entrance of and gate 11,656,496,242. The other entrance of this gate receives the retarded Nullsignal. The output signal of the gate 242 arrives at the sources of light 24 and 25, which thereupon ever a light pulse of first and/or second Wellenlängc send. These are united in the hererodyne 28 and arrive over the light switch 29 and the channel of 19 over the branch line 901 at the signal source 701.

far for bypass 401 as well as The light pulses of second wavelength are only let through by the filter 70f and reflected then by the mirror 70e of the signal source 701. The light pulses of first wavelength lo are not reflected at the signal source 701 because of the distance of the filter 70d and the mirror 70c of the front surface of the branch line 901 in the out condition, but only in a condition with plant of filters 70d and mirror 70c at this front surface. lin out condition thus only the impulses of second wavelength are reflected, in the Ein-Zustand against it the impulses of first and second wavelength. The reflected impulses arrive to the receiver 26 and/or 27 over branch line 901, branching 401, channel 19 and light switch 29 at the light divisor 30, more softly the impulses of first and second wavelength separate and separated these in each case for first bzw.

second wavelength zuführt.

In appropriate way the light pulses arrive over the subordinate branchings 402 to 416 and the associated branch lines 902 to 916 at the signal sources 702 to 716, in each case over the inserted channel intermediate sectors 801 to 815 and with appropriate time delay preceding in each case Signalquelle.

arranged opposite that In such a way received, reflected light pulse sequence and/or the appropriate, binärisicrten signals arrive at the entrance output circuit 22. With different optical length of the intermediate sectors 801 to 815 the subsequent intervals of this pulse rate are differently and irregularly distributed. The light receptor 26 converts the light pulses of first wavelength into appropriate electrical binary signals according to cinem in each case in signal and leads these the shift register 233 zu.

The electrical signals produced by the borrowing receiver 27 from the reflected borrowing impulses to second wavelength arrive with a given time delay due to the circuit 234 as time expensive pulses at the Sehieberegister 233, which from there with the data binary signals according to the reflected light pulses first wavelength is loaded as a function of the time expensive pulses mentioned. Thus in the 16stelligen the Registcr 233 contained data according to in each case the Ein-Zustand of the signal sources 701 to 716 to the memory 13 are then transferred. By counting of at the beginning of existing Ma×imalstand the counter 235 reaches the zeroing and, which is determined by the Nulldetektoi 236 and converted into an appropriate Nullsignal in each case at expiration of an inquiry frame. The latter steers with delay due to circuit 126 in accordance with Fig. 13 the address selection circuit 12 on. The address selection attitude 12 determines the input of the appropriate address entrance of the entrance sales tax circuit 23. If the reflected light pulse arrives for example from del Signalquelle 701 at the light receptor 26, scolded the counter 235 of logiseh zero on unity. The exit of the zero-detector 236 from high sehaltet accordingly to low signal level. The rise detector 237 determines then the sloping flank of the Nullsignals. Since the counter 238 takes its maximum conditions at this time (“all in”), arranges the detector 237 a counting of the counter 238, whereby this takes its zeroing and. In this way the partitions are specified in accordance with the first 16 bits of the memory in accordance with 13 your count of the counter 238. The Nullsignal far in the flat, retarded in the circuit 126, “5 tung 127 retarded ux D then in the circuit 128 gepulst.

The appropriate output signal is supplied to the memory 13 as read-only gift signal, so that this is shifted into the write condition. In accordance with memory becomes in front 13 with the dates of preparation Sehieberegister 233 in the partitions of the first 15 bits thus addressed geladen.

The reflected light pulses of the signal sources of the group 700 of the next circuit stage arrive in the same way at the light receptors 26 and 27 and in form of electrical binary signals as a function of the time expensive pulses to the shift register are transferred. Due to the counters of the time expensive pulses by the counter 235 the count from zero changes to unity. The Nullsignal of the detector 236 changes thus from high to low level. If the counter counted 235 16 time expensive pulses, the rise detector 237 consequently determines the change of the Nullsignals from high to low level and continued to scold the counter 238. This counter accepts the conditions unity accordingly and determines the next address of the memory 13. , The conditions of the counter 238 remain unity, until all 16 reflected light pulses from the signal sources is completely received. Then the data are transferred in the shift register 233 to the partitions of the memory 13 in accordance with addressing as a function of the exit of the counter 238. Thus a succession is repeated by operations and after assumption of all binary signals of the 16 signal sources of the group of 700 into the memory 13 has the counter 238 the conditions 15. This enters, if the condition of the first binary signal of the 16 groups of signal sources of 700 to shift registers 233 is taken up. And gate 240 produces the appropriate pulse signal synchronous with the read-only gift signal of the memory 13, if the conditions of the counter are 238 15, if thus the condition of the sechzehnten group of signal sources is stored. The sources of light 24 and send again light pulses to the signal sources 701 to 716 of the group of signal sources concerned of 700 as a function of the above-mentioned pulse signal. The address selection circuit 12 selects the address signal of the entrance output circuit 22 only then, if the conditions of the counter become 235 zero, otherwise of the central station 1. accordingly has the central station free access to the memory 13.

With that managing described execution form the light pulses of first and second wavelength are overlaid, which reflects signal sources 701 to 716 transmitted and of these concerning the second wavelength independently of respective signal status, concerning the first wavelength however only in the Ein-Zustand of the sources concerned. A rapid identification of both possible signal statuses for each signal source is accordingly feasible by determination of the presence and/or absence of a reflected light pulse of first wavelength at present in each case the presence of a reflected light pulse of second wavelength and/or an appropriate time expensive pulse comfortably. Due to this detection the time expensive pulses mentioned by reflected light pulses of first wavelength as a function of the necessity escapes the presence or absence to measure the subsequent intervals of the time expensive pulses constant or among themselves agreeing. Accordingly also the necessity is void to an agreeing length calculation of the ÜbertragungskanalZwisehenabschnitte 801 to 815 fine-other-following light branchings 401 to 416, outer between that. The unfavorable restrictions first described of the execution form regarding the channel intermediate sectors 601 to 615 and the branch lines 501 to 516 to the signal sources 201 to 216 is from there with the available execution form overcome. Here only the restriction, according to which the length of the intermediate sectors 801 to 815 and the branch lines 901 to 916 to the signal sources 701 to 716 enough must be large, exists around a perfect distinction of the successive reflected light pulses and/or a safe collection of the intermediate time intervals too ermöglichen.

With the available execution form from there complex 656,496 I2 work are dispensable for the standardization of the appropriate light conductor sections, and the entire manufacture expenditure decreases entsprechend.

The execution of a binary signal source 721 in accordance with Fig.

an improvement places with reference to the Fig. 10 to 14 described execution. With the latter the light pulses of second wavelength were reflected independently in each case of the Einoder out condition of the signal sources, while the reflection of the light pulses of first wavelength took place only in the Ein-Zustand. In contrast become during the execution after Fig. 15 the light pulses of first wavelength only in a condition and the light pulses of second wavelength only in the AusZustand of the signal source 721 reflects. For this a handle 72a is around an axle 72b tiltable stored as well as at its reflection-lateral end forked with branch sections 72c and 72d provided. The front surface of the branch section 72c is provided with eincm filter 72f for the passage of the light pulses of first wavelength as well as with a mirror 72e for the reflection of these light pulses. The front surface of the other branch section 72d is only the light pulses of second wavelength and provided with a mirror 72g for the reflection of these light pulses with a filter 72h for the passage. The branch line 501 to such a signal source can in accordance with Fig. 4 implemented sein.

In Fig. 16 as block diagram represented circuit for the processing of the light pulses in connection with a signal source 721 in accordance with Fig. 15 can do essentially similarly as such in accordance with Fig. 14 developed its, however with the following deviations:

A light receptor 26 receives a rerlektierten light pulse of first wavelength from a signal source in the Ein-Zustand, while the other Lichtcmpfänger 27 receives a reflected light pulse of second wavelength from the signal source 721 in a condition. The appropriate electrical signals are transformed into lmpulsformern 231 and 232 and become by a or gate 241 the VerzögerungsschaItung 234 zugeleitet.

The impact of this circuit is essentially similar to those of the preceding remark example in accordance with Fig. 10 to 14, apart however from the reflection “” of the light pulses at the binary signal source 721 and from the line-to-store transfer of the appropriate binary signals into the shift register 233.

lm Ein-Zustand of the signal source 721 stands the filter 72f at the branch section 72c in contact with front surface of the branch line 501, so that light pulses of first wavelength are only reflected not however such second wavelength. The light receptor 26 produces accordingly an in signal in accordance with arrival of a reflected borrowing impulse of first wavelength, which arrives over lmpulsformer 231 at the or gate 241 and at the shift register 233. The latter is also loaded directly from there in in signal from the pulse molder 231, during m in signal from the or gate 241 as time expensive pulse dient.

With the out condition of the signal sources 721 the filter 72h of the other branch section 72d stands in contact with the front surface of the branch line 501, so that light pulses of second wavelength are only reflected, not however such first wavelength. The light pulses of second wavelength arrive at the borrowing receiver 27, that produces from this a elektrisehes out signal according to the reflected light pulses of second wavelength. This to signal of high level is binärisiert by the impulse molder 232 and supplied by way of or gate 241 as well as delay circuit 234 as time expensive pulse dcm Schicbercgister 233. Since the light receptor 26 does not receive a reflected light pulse at this time, its exit accepts a signal status according to an out signal. In such a way received out signal arrived over lmpulsformer 231 at the shift register 233, soft from there with the appropriate out signal from the receiver 26 is loaded, while the AusSignal in accordance with the reflected light pulse of second wavelength at the receiver 27 as time expensive pulse dient.

As described managing, the available execution form with reflection of the light pulses of first wavelength at in signal status of the signal sources as well as with reflection of the light pulses of second wavelength works at out signal status. A time expensive pulse results thus on the spot in each case using both reflected Lichtimpulse.

As a result of evaluating the output signal of the light receptor 26 as a function of in such a way received time expensive pulse thus the possibility of an identification arises going by, soft of the signal sources in each case Einbzw. Out condition einnimnt. Thus sees a simplification of geometry of the light Zweigleitungcn 501, whose production becomes generally difficult, under acceptance of a complicated on building the signal source with its handle 72a.

results in v of 6 sheets designs FIG I /t 2 “, I/central entrance station st euerung FIG. 2 ./3 adjustment in level _4 ù/3” 42 t Zentral-1 station in //2 /7 8 ù+, í/+t I0-- 9 i ueì, ++r+r+.g. _L control q 2:::: uo° I +o % -0 I r T, okalstation [for Beber carry " - U EingangsI I I lo'+ eu+= I l, teu+r, +-+lI 1 '. , + '], IL [61 62 63 “q, _ _ I okalstation I -1, FIG. 3 CCU I B,/, z 12 -- Address selection ““IJF I memory 602,601, + o o o, ù.UUU 203,202,201 14 f Adressuna memory st euerun 19--- 615,602,601 °/oo, +L + +L+O L +L+o, U… U+ 216,203,202,201 FIG+ 4,501 J ù.). , 5,201 < -: ”, b o \ _c”