Method and device for calibrating zero position output value of sensitive shaft of tilt angle sensor

The invention discloses a method for calibrating a zero position output value of a sensitive shaft of a tilt angle sensor. The tilt angle sensor is a tilt angle sensor of a capacitive type acceleration transducer. The method comprises the following steps: fixing a tilt angle sensor circuit board and applying a first action force on a movable polar plate of a sensor capacitor in the direction of the sensitive shaft; acquiring a first calibration factor value output by the capacitive type acceleration transducer; in the direction of the sensitive shaft, applying a second action force on the movable polar plate and ensuring that the second action force and the first action force have same strength and opposite directions by taking the capacitive type acceleration transducer as the reference;acquiring a second calibration factor value; and acquiring a zero position output value of the sensitive shaft, wherein the zero position output value is equal to 1/2 of the sum of the first calibration ...

Method, system, device and mixer for measuring volume of agglomerates in mixing tank

The invention relates to the technical field of concrete mixers, in particular to a method for measuring the volume of agglomerates in a mixing tank, which comprises the following steps: measuring the unladen weight M of the mixing tank; measuring the laden weight G of the mixing tank; according to the formula T=G-M, calculating the weight T of the agglomerates in the mixing tank; and according to the formula V=T/K, calculating the volume V of the agglomerates in the mixing tank (K is a preset weight per volume of the agglomerates). The method can be used for quickly and accurately measuring the volume of the agglomerates in the mixing tank, provide accurate values for costumers and transport users, effectively prevent the material theft phenomenon in the transport process of the mixer, and provide a basis for judging whether the actual volume of the agglomerates is consistent with the preset volume. The invention also discloses a system, a device and a mixer for measuring the volume of ...

Detaching-proof antenna

Port diplex, failure testing circuit and intelligent module with the circuit

The invention discloses a port reuse and fault detection circuit, comprising an input circuit, an output circuit, a feedback circuit, an external port, a drive circuit, a sampling circuit and a switching circuit; the input end of the input circuit is connected with the external port, and the output end thereof is connected with the input port of an main processor; according to an external detection signal, the input signal of the main processor is generated; the input end of the output circuit is connected with the output port of the main processor, and the output end thereof is connected with the external port; the input end and the output end of the output circuit are connected in series in sequence; the drive circuit generates a loading drive signal according to the output signal of the main processor; the sampling circuit generates a sampling signal of the loading signal; the switching circuit controls the positive conduction and reverse cut-off of the input end and the output endof ...

Full enclosed reciprocating type piston refrigeration compressor

The invention relates to an improved technology of a refrigeration compressor, in particular to a full enclosed reciprocating type piston refrigeration compressor which comprises a shell, wherein a motor, an absorbing and exhausting valve group, a muffler, a cylinder block and a piston are installed in the shell, the cylinder block is provided with a crank shaft hole and a crank shaft is installed on the crank shaft hole. The invention is characterized in that a bearing installation counter bore is extended on the crank shaft hole of the cylinder block, the middle part of the counter bore is provided with a frustum with a shaft hole, a lower thrust washer, a bearing retainer and steel beards are installed in the counter bore, a convex cone frustum is arranged close to a shaft shoulder on the crank shaft, the convex cone frustum locates between the end face of the crank shaft shoulder and the upper end face of the frustum with the shaft hole of the cylinder block, and an upper thrust washer ...

Engineering plant and arm support control system thereof

The invention discloses an arm support control system, which comprises a material object model (21), a control device (23) and an execution device (24), wherein the material object model (21) has a structure the same as that of an engineering plant, and is used for inputting a target position signal of an arm support (25) of the engineering plant by setting the model arm support state of the material object model (21); the control device (23) is used for receiving the target position signal, obtaining a movement path of the arm support (25) according to a preset control strategy and transmitting a control instruction; and the execution device (24) is used for controlling the arm support (25) to move according to the control instruction until the arm support (25) reaches a target position.The system provided by the invention improves the accuracy of control over the movement of the arm support of the engineering plant, increases an arm support state regulation speed, and prolongs the service ...

System and method for calibrating tilt angle sensor

The invention discloses a sensor technology, more particularly to a system and a method for calibrating a tilt angle sensor. The calibration system of the tilt angle sensor comprises a controller, a drive device, a rotating shaft, two angle measurement devices and a calibration disc, wherein the drive device drives the rotating shaft; the rotating shaft is rotatably installed on a frame body and the calibration disc is installed on the rotating shaft; a tilt sensor angle to be calibrated is installed on a calibration surface of the calibration disc, and the calibration surface is vertical to a rotating axis of the rotating shaft; the two angle measurement devices are used for respectively measuring the rotating angles of the calibration disc and the rotating shaft; and the controller sends data to the tilt sensor angle to be calibrated in accordance with the two rotating angles. Compared with the prior art, the calibration system can improve the calibration efficiency for the tilt angle ...

Method and device for realizing purpose of binding positions of CAN bus sensors

The invention relates to the technical field of sensors, in particular discloses a method and a device for realizing the purpose of binding the positions of CAN bus sensors. The method comprises the following steps: sequentially controlling a plurality of sensors to be accessed to a CAN bus network, wherein the CAN data frame of each sensor has corresponding characteristic identification, and the characteristic identification of the CAN data frame of each sensor is unique in the whole CAN bus network; receiving the CAN data frame sent by each sensor in the accessing process of each sensor; acquiring the characteristic identification of each CAN data frame; and establishing the binding relation between each sensor and each installing position corresponding to the currently binding position according to each characteristic identification. The invention can be used for automatically establishing binding relation between a plurality of CAN bus sensors and each of installing positions on one ...

Embedded type system and method for renewing application program

Identification of physical address of partial node, network configuration and maintaining method, network system

The invention discloses a method for identifying physical address of a partial node as well as a network configuration and maintaining method and further discloses a network system for implementing the methods. In the method for identifying the physical address of the partial node, a host node broadcasts a searching physical address constructed by the host node to the partial node and the partialnode matches self physical address with the searching physical address so that replying and responding are carried out according to the matching result; the host node finally constructs the searchingphysical address that is the same as the physical address of the partial node according to the response of the partial node, and the searching physical address is saved. The network configuration andmaintaining method can assign network addresses according to the access position information of the partial node. Simultaneously, the position of the partial node is identified. The method in the invention ...

Portable spreader operation controller and spreader using the same

The invention discloses a portable control device for pavers, which comprises a fixed device and a mobile device. The fixed device comprises a first transceiver module, and the mobile device comprises a second transceiver module, a central processing module and an operation panel, wherein the first transceiver module is used for exchanging status data and control data with a central controller ofa paver; the second transceiver module is wirelessly connected with the first transceiver module and is used for exchanging the status data and the control data with the first transceiver module; thecentral processing module is used for receiving the status data transmitted by the second transceiver module, acquiring control signals generated by the operation panel, processing the status data and the control signals and transmitting the control data to the second transceiver module; and the operation panel is used for providing operation interfaces and generating the control signals during operation ...

Method, system, device and mixer for measuring volume of agglomerates in mixing tank

The invention relates to the technical field of concrete mixers, in particular to a method for measuring the volume of agglomerates in a mixing tank, which comprises the following steps: measuring theunladen weight M of the mixing tank; measuring the laden weight G of the mixing tank; according to the formula T=G-M, calculating the weight T of the agglomerates in the mixing tank; and according tothe formula V=T/K, calculating the volume V of the agglomerates in the mixing tank (K is a preset weight per volume of the agglomerates). The method can be used for quickly and accurately measuring the volume of the agglomerates in the mixing tank, provide accurate values for costumers and transport users, effectively prevent the material theft phenomenon in the transport process of the mixer, and provide a basis for judging whether the actual volume of the agglomerates is consistent with the preset volume. The invention also discloses a system, a device and a mixer for measuring the volume of the ...

Diesel engine throttle position detection method and detection apparatus

The invention discloses a method for detecting the position of a throttle of a diesel engine. Current pulling force of a steel wire rope is obtained; the data of an opening degree of the throttle corresponding to the current throttle of the steel wire rope is obtained from a pre-stored data list; and the data list has corresponding data between the pulling force born by the steel wire rope after being calibrated and the opening degree of the throttle. The pulling force born by the steel wire rope is easy to measure and is less influenced by the factors of the abrasion and the environment of a measuring device so that the pulling force born by the steel wire rope and the opening degree of the throttle keep a strict corresponding relation, which is favorable for improving the detection precision of the opening degree of the throttle and reduces the calibrating times. On the basis, the invention also discloses a device for detecting the position of the throttle of the diesel engine.

Control method, apparatus and system for concrete pump vehicle

The invention provides a control method of a concrete pump truck. The control method comprises the following steps: flow demand signals corresponding to a rotating floor and each arm support respectively are obtained; a theoretical value of total flow needed for controlling the movements of the rotating floor and each arm frame is calculated according to the flow demand signals; an ideal value of rotating speed of an engine is calculated according to the theoretical value of the total flow obtained by calculation; the operating speed of the engine is adjusted according to the ideal value of the rotating speed obtained by calculation; and an arm support pump is driven by the engine to control the movements of the rotating floor and each arm support. The invention further provides control equipment and a system of the concrete pump truck. By using the control method, the equipment and the system, the energy-saving control of the arm supports of the pump truck can be realized.

Matching authentication method, apparatus and system for radio communication apparatus

The invention discloses a matching authentication method for wireless communication equipment. The method comprised the following steps: a device at the transmitting end sends a matching request to a device at the receiving end; the device at the transmitting end can be used for receiving the response messages feedback by the device at the receiving end, and the response messages are carried withfeature codes; the feature codes are obtained through the end at the transmitting end, and the feature codes are taken as the authorization codes communicated with the receiving end. The invention also provides a wireless communication device with a function of matching authentication correspondingly. The wireless communication device comprises a memory unit, a communication unit, and an authorization unit and a feature code updating unit. The invention also provides a wireless communication system with the function of matching authentication. By adopting the method, the wireless controller is corresponding ...

Positioning method and device of cantilever crane system and concrete pump truck

The invention discloses positioning method and device of a cantilever crane system and a concrete pump truck. In the positioning method and the positioning device of the cantilever crane system, initial position parameters of a detection point are obtained according to the observation of a mobile GPS receiver to a satellite group, carrier wave phase information transmitted by a reference GPS receiver is obtained, and the distance between the cantilever crane system and a reference station is less than the preset value; and position parameters of the detection point are obtained according to the initial position parameters of the carrier wave phase information. The position parameters of the detection point can be obtained by using a principle of carrier wave phase differential and the obtained position parameters can be corrected to centimeter or higher precision, therefore, the position parameters of the detection point can be more accurately determined. When the position parameters of ...

Control method, apparatus and system for concrete pump vehicle

The invention provides a control method of a concrete pump truck. The control method comprises the following steps: flow demand signals corresponding to a rotating floor and each arm support respectively are obtained; a theoretical value of total flow needed for controlling the movements of the rotating floor and each arm frame is calculated according to the flow demand signals; an ideal value ofrotating speed of an engine is calculated according to the theoretical value of the total flow obtained by calculation; the operating speed of the engine is adjusted according to the ideal value of the rotating speed obtained by calculation; and an arm support pump is driven by the engine to control the movements of the rotating floor and each arm support. The invention further provides control equipment and a system of the concrete pump truck. By using the control method, the equipment and the system, the energy-saving control of the arm supports of the pump truck can be realized.

System and method for calibrating tilt angle sensor

The invention discloses a sensor technology, more particularly to a system and a method for calibrating a tilt angle sensor. The calibration system of the tilt angle sensor comprises a controller, a drive device, a rotating shaft, two angle measurement devices and a calibration disc, wherein the drive device drives the rotating shaft; the rotating shaft is rotatably installed on a frame body and the calibration disc is installed on the rotating shaft; a tilt sensor angle to be calibrated is installed on a calibration surface of the calibration disc, and the calibration surface is vertical to a rotating axis of the rotating shaft; the two angle measurement devices are used for respectively measuring the rotating angles of the calibration disc and the rotating shaft; and the controller sends data to the tilt sensor angle to be calibrated in accordance with the two rotating angles. Compared with the prior art, the calibration system can improve the calibration efficiency for the tilt angle ...

Equipment node address code distribution method and distributing system, and address configuration node

The present invention relates to a distribution method for equipment node address codes, comprising the following steps that: an address configuration node in a system configures starting signals are allocated for each equipment node broadcast address; the equipment nodes receives the starting signals and respectively returns a unique confirmation code to the address configuration node; the address configuration node distributes unique equipment node address codes, and broadcasts the equipment node address codes as well as the confirmation codes; the equipment nodes determine that the confirmation codes accord with the own confirmation codes, and saves the equipment node address codes. Meanwhile, the present invention also discloses a distribution system for equipment node address code, as well as an address configuration node. The present invention solves the problem that the prior art is high in error rate when setting address codes, and has the advantages of easy realization, low cost ...

Tilt angle sensor and tilt angle control system

The invention relates to a tilt angle sensor, which comprises a tilt angle detector and a microprocessor, wherein the tilt angle sensor is vertically arranged on an object to be tested, and the tilt angle detector detects tilt angle information of the object to be tested and sends the information to the microprocessor; and the microprocessor calculates the tilt angle of the object to be tested on a vertical plane according to the tilt angle information. The tilt angle sensor also comprises a switching value input module which is used for detecting switching value information of the object to be tested and sending the switching value information to the microprocessor. The invention also provides a tilt angle sensor, and a tilt angle control system applying the two tilt angle sensors. The tilt angle sensors have the capability of acquiring various kinds of information, and meet the requirements of engineering machinery in certain specific work environments. The tilt angle control system comprehensively ...

Engineering vehicle arm rest controller, control system, engineering vehicle and control method

The invention provides an engineering vehicle arm rest controller, which comprises a touch screen, a display driving unit, a display control unit and a control instruction forming unit, wherein the touch screen forms a touch induction signal; the display driving unit controls the display content of the touch screen; the display control unit provides a display control instruction for the display driving unit when an operation induction mark is in an activation state; and the control instruction forming unit forms and sends the control instruction of the motion speed and the motion direction of an arm rack end expected by reflection according to the position of a touch point represented by the touch induction signal on the touch screen, when the control instruction forming unit receives the touch induction signal and an operation induction mark state signal. The invention provides an engineering vehicle arm rest control system using the engineering vehicle arm rest controller, an engineering ...

Port diplex, failure testing circuit and intelligent module with the circuit

The invention discloses a port reuse and fault detection circuit, comprising an input circuit, an output circuit, a feedback circuit, an external port, a drive circuit, a sampling circuit and a switching circuit; the input end of the input circuit is connected with the external port, and the output end thereof is connected with the input port of an main processor; according to an external detection signal, the input signal of the main processor is generated; the input end of the output circuit is connected with the output port of the main processor, and the output end thereof is connected with the external port; the input end and the output end of the output circuit are connected in series in sequence; the drive circuit generates a loading drive signal according to the output signal of the main processor; the sampling circuit generates a sampling signal of the loading signal; the switching circuit controls the positive conduction and reverse cut-off of the input end and the output end of ...

Equipment node address code distribution method and distributing system, and address configuration node

The present invention relates to a distribution method for equipment node address codes, comprising the following steps that: an address configuration node in a system configures starting signals are allocated for each equipment node broadcast address; the equipment nodes receives the starting signals and respectively returns a unique confirmation code to the address configuration node; the address configuration node distributes unique equipment node address codes, and broadcasts the equipment node address codes as well as the confirmation codes; the equipment nodes determine that the confirmation codes accord with the own confirmation codes, and saves the equipment node address codes. Meanwhile, the present invention also discloses a distribution system for equipment node address code, as well as an address configuration node. The present invention solves the problem that the prior art is high in error rate when setting address codes, and has the advantages of easy realization, low cost ...

Method, controller and system for binding inclination angle sensor,

The invention discloses a tilt sensor binding method, comprising the steps of: building a sensor copy for the non-bound tilt sensor angle parameters; operating the part not bound with a tilt sensor; receiving the data sent from each tilt sensor; comparing the received angle parameter of each tilt sensor with the tilt sensor angle parameter of the sensor copy; correlating the tilt sensors with changed angle parameters with the operated parts, to bind the tilt sensors. The invention further provides a controller and a system for realizing the method. The method, controller and system can make the storage of tilt sensors simple, reduce the work strength for the installment of tilt sensors and improve installment efficiency.

Detection device and concrete pumping equipment

The invention discloses a detection device for detecting the volume of materials inside a material container, relating to the technical field of concrete pumping equipment. The detection device comprises a flexible container, a medium container and a volume detection sensor, the flexible container is full of media; the medium container is communicated with the flexible container; the volume detection sensor is used for detecting the volume of the media entering the medium container; the flexible container is arranged in the material container and immersed into the materials inside the material container, and the media inside the flexible container enter the medium container under the extrusion of the materials; the volume detection sensor detects the volume of the media entering the medium container; and the volume of the materials is calculated according to the preset relation between the volume of the media and the volume of the materials inside the material container. The invention also ...

Engineering machine and bus control system thereof

The invention discloses a bus control system of an engineering machine. The bus control system comprises an industrial personal computer (IPC), wherein the IPC is connected with at least one weighing control module (3) and at least one expansion input output (IO) module (4) through a first bus; the IPC comprises an upper computer (1) and a main controller (2) arranged independent of the upper computer (1), and the upper computer (1) is connected with the main controller (2); and the main controller (2) is connected with each weighing control module (3) and each expansion IO module (4) throughthe first bus, and the upper computer (1) is also directly connected with each expansion IO module (4) through a second bus. When the main controller (2) fails, the control system can still realize production of concrete so as to improve the working reliability. Moreover, the invention also discloses the engineering machine comprising the bus control system.

Control circuit of key pin of function chip and control method

The invention comprises: a micro control chip, a functional chip, a threshold controlling circuit, and a logic control circuit. The input of said threshold circuit is used for receive a voltage signal for showing the running state of the circuit, and comparing the voltage signal with a preset threshold, and generating a logic level signal according to the comparison result, and outputting the logic level signal to the logic control circuit; the input of said logic control circuit is used for receiving a control signal transmitted from said micro control chip, and making logical operation forsaid logic level signal and control signal, and outputting the operation result to the pins of said functional chip. The invention also reveals a method thereof.

Device and method for detecting position of concrete pump truck and concrete pump truck

The invention discloses a device and a method for detecting the position of a concrete pump truck and the concrete pump truck. The device for detecting the position of the concrete pump truck comprises a processor, a timer, a dynamic sensor and a fixed point sensor, wherein the ultrasonic wave sending and reception can be carried out between the dynamic sensor and the fixed point sensor; the timer can obtain the transmission time of the ultrasonic wave in a predetermined path according to the time of transmitting the ultrasonic wave and the time of receiving the ultrasonic wave, and the predetermined path is determined according to the position relation between the dynamic sensor and the fixed point sensor; the processor acquires the real-time coordinate parameters, real-time moving direction and real-time moving speed of a concrete outlet in a reference coordinate system according to a predetermined strategy. In the disclosed concrete pump truck, an intelligent control system can control ...

Fault diagnosis system

The invention discloses a fault diagnosis system, which is used for detecting the fault of a wiring harness vehicle; the fault diagnosis system comprises a connecting device (1), a detecting device (2), a controlling device (3) and an output device (4); the connecting device (1) is connected with the detecting device (2) and a tested wiring harness (9) of the wiring harness vehicle; each line state of the tested wiring harness (9) is detected by the detecting device (2); a detecting signal is received by the controlling device (3) and is compared with a pre-stored standard of the tested wiring harness (9) by the controlling device to judge the state of the tested wiring harness (9); the state of the tested wiring harness (9) is output by the output device (4). The connection of a wiring harness and the detecting device (2) can be conveniently realized by the fault diagnosis system in the invention, the pre-stored standard in the controlling device (3) is corresponding to each line of the ...

Method and device for controlling discharge rate of mixer truck and mixer truck

The invention discloses a method and a device for controlling the discharge rate of a mixer truck and the mixer truck. The control method is characterized by comprising the following step: acquiring sound signals through acquiring working sound emitted by a pumping device in material pumping; calculating after treating the sound signals; calculating out the material pumping rate of the pumping device; controlling the discharge rate of the mixer truck according to the material pumping rate, thus the material discharge and material pumping are kept consistent, and the occurrence of material flash or empty suction situations is reduced. The control device provided by the invention is used for realizing the control method, is easy to install, has low realizing cost, and ensures that the functions and refit of the existing mixer truck can be carried out conveniently; the applicability and the expansibility are good; when the mixer truck which is provided with the control device works together ...

Fault diagnosis system and method

The invention discloses a fault diagnosis system, which is used for detecting the fault of a wiring harness vehicle; the fault diagnosis system comprises a connecting device (1), a detecting device (2), a controlling device (3) and an output device (4); the connecting device (1) is connected with the detecting device (2) and a tested wiring harness (9) of the wiring harness vehicle; each line state of the tested wiring harness (9) is detected by the detecting device (2); a detecting signal is received by the controlling device (3) and is compared with a pre-stored standard of the tested wiring harness (9) by the controlling device to judge the state of the tested wiring harness (9); the state of the tested wiring harness (9) is output by the output device (4). The connection of a wiring harness and the detecting device (2) can be conveniently realized by the fault diagnosis system in the invention, the pre-stored standard in the controlling device (3) is corresponding to each line of the ...

Injection mold feed multiway choosing and regulating mechanism

Engineering plant and arm support control system thereof

The invention discloses an arm support control system, which comprises a material object model (21), a control device (23) and an execution device (24), wherein the material object model (21) has a structure the same as that of an engineering plant, and is used for inputting a target position signal of an arm support (25) of the engineering plant by setting the model arm support state of the material object model (21); the control device (23) is used for receiving the target position signal, obtaining a movement path of the arm support (25) according to a preset control strategy and transmitting a control instruction; and the execution device (24) is used for controlling the arm support (25) to move according to the control instruction until the arm support (25) reaches a target position. The system provided by the invention improves the accuracy of control over the movement of the arm support of the engineering plant, increases an arm support state regulation speed, and prolongs the service ...

Detection device and concrete pumping equipment

The invention discloses a detection device for detecting the volume of materials inside a material container, relating to the technical field of concrete pumping equipment. The detection device comprises a flexible container, a medium container and a volume detection sensor, the flexible container is full of media; the medium container is communicated with the flexible container; the volume detection sensor is used for detecting the volume of the media entering the medium container; the flexible container is arranged in the material container and immersed into the materials inside the material container, and the media inside the flexible container enter the medium container under the extrusion of the materials; the volume detection sensor detects the volume of the media entering the medium container; and the volume of the materials is calculated according to the preset relation between the volume of the media and the volume of the materials inside the material container. The inventionalso ...

Injection mold feed multiway choosing and regulating mechanism

The invention discloses a multi-directional selective feeding adjusting device for injection mold, which comprises a pulley (1) and a positioning bead (2). In terms of requirements for selective formation of a multi-cavity injection mold, the invention adopts the technical proposal of using a flexible pulley channel and a cold channel of a dynamic mold core for selective access, thus solving the problems of labor waste, time waste and mold damage existing in the prior art of soldering and parking. Therefore, the multi-cavity injection mold can employ all of or part of the plastic products of the multi-cavity injection mold for molding, thus achieving the purposes of convenience, rapidness and undamaging the molds. In practical application, the right-angle tee channel (11) of the pulley (1) can be of the form of multi path and optional angle according to actual needs in order to achieve the purpose that the pulley (1) channel and the dynamic mold cool channel (021) can perform the selective ...

Method, controller and system for binding inclination angle sensor

The invention discloses a tilt sensor binding method, comprising the steps of: building a sensor copy for the non-bound tilt sensor angle parameters; operating the part not bound with a tilt sensor; receiving the data sent from each tilt sensor; comparing the received angle parameter of each tilt sensor with the tilt sensor angle parameter of the sensor copy; correlating the tilt sensors with changed angle parameters with the operated parts, to bind the tilt sensors. The invention further provides a controller and a system for realizing the method. The method, controller and system can make the storage of tilt sensors simple, reduce the work strength for the installment of tilt sensors and improve installment efficiency.

Controller inner program downloading method and downloading system

Angle measuring device, method and engineering machine

The invention discloses an angle measuring device and a device, as well as an engineering machine with the angle measuring device. The angle measuring device comprises a microprocessor, a main acceleration sensor and an output device, as well as an auxiliary acceleration sensor, a predetermined angle is arranged between the forward direction of a main sensing shaft of the main acceleration sensorand the forward direction of a sensing shaft of the auxiliary acceleration sensor; the main acceleration sensor and the auxiliary acceleration sensor respectively output a first initial parameter anda second initial parameter; the microprocessor can obtain a first actual parameter of the main acceleration sensor and further obtain an angle parameter with higher precision according to the first actual parameter; and the first actual parameter is represented as the parameter outputted by the main acceleration sensor when having no outside interference. The angle measuring device and the methodcan ...

Engineering vehicle arm rest controller, control system, engineering vehicle and control method

The invention provides an engineering vehicle arm rest controller, which comprises a touch screen, a display driving unit, a display control unit and a control instruction forming unit, wherein the touch screen forms a touch induction signal; the display driving unit controls the display content of the touch screen; the display control unit provides a display control instruction for the display driving unit when an operation induction mark is in an activation state; and the control instruction forming unit forms and sends the control instruction of the motion speed and the motion direction ofan arm rack end expected by reflection according to the position of a touch point represented by the touch induction signal on the touch screen, when the control instruction forming unit receives thetouch induction signal and an operation induction mark state signal. The invention provides an engineering vehicle arm rest control system using the engineering vehicle arm rest controller, an engineering ...

Full enclosed reciprocating type piston refrigeration compressor

The invention relates to an improved technology of a refrigeration compressor, in particular to a full enclosed reciprocating type piston refrigeration compressor which comprises a shell, wherein a motor, an absorbing and exhausting valve group, a muffler, a cylinder block and a piston are installed in the shell, the cylinder block is provided with a crank shaft hole and a crank shaft is installed on the crank shaft hole. The invention is characterized in that a bearing installation counter bore is extended on the crank shaft hole of the cylinder block, the middle part of the counter bore is provided with a frustum with a shaft hole, a lower thrust washer, a bearing retainer and steel beards are installed in the counter bore, a convex cone frustum is arranged close to a shaft shoulder on the crank shaft, the convex cone frustum locates between the end face of the crank shaft shoulder and the upper end face of the frustum with the shaft hole of the cylinder block, and an upper thrust washer ...

Device and method for detecting position of concrete pump truck and concrete pump truck

The invention discloses a device and a method for detecting the position of a concrete pump truck and the concrete pump truck. The device for detecting the position of the concrete pump truck comprises a processor, a timer, a dynamic sensor and a fixed point sensor, wherein the ultrasonic wave sending and reception can be carried out between the dynamic sensor and the fixed point sensor; the timer can obtain the transmission time of the ultrasonic wave in a predetermined path according to the time of transmitting the ultrasonic wave and the time of receiving the ultrasonic wave, and the predetermined path is determined according to the position relation between the dynamic sensor and the fixed point sensor; the processor acquires the real-time coordinate parameters, real-time moving direction and real-time moving speed of a concrete outlet in a reference coordinate system according to a predetermined strategy. In the disclosed concrete pump truck, an intelligent control system can control ...

Portable spreader operation controller and spreader using the same

The invention discloses a portable control device for pavers, which comprises a fixed device and a mobile device. The fixed device comprises a first transceiver module, and the mobile device comprises a second transceiver module, a central processing module and an operation panel, wherein the first transceiver module is used for exchanging status data and control data with a central controller of a paver; the second transceiver module is wirelessly connected with the first transceiver module and is used for exchanging the status data and the control data with the first transceiver module; the central processing module is used for receiving the status data transmitted by the second transceiver module, acquiring control signals generated by the operation panel, processing the status data and the control signals and transmitting the control data to the second transceiver module; and the operation panel is used for providing operation interfaces and generating the control signals during operation ...

Tilt angle sensor and tilt angle control system

The invention relates to a tilt angle sensor, which comprises a tilt angle detector and a microprocessor, wherein the tilt angle sensor is vertically arranged on an object to be tested, and the tilt angle detector detects tilt angle information of the object to be tested and sends the information to the microprocessor; and the microprocessor calculates the tilt angle of the object to be tested ona vertical plane according to the tilt angle information. The tilt angle sensor also comprises a switching value input module which is used for detecting switching value information of the object to be tested and sending the switching value information to the microprocessor. The invention also provides a tilt angle sensor, and a tilt angle control system applying the two tilt angle sensors. The tilt angle sensors have the capability of acquiring various kinds of information, and meet the requirements of engineering machinery in certain specific work environments. The tilt angle control systemcomprehensively ...

Control circuit of key pin of function chip and control method

The invention comprises: a micro control chip, a functional chip, a threshold controlling circuit, and a logic control circuit. The input of said threshold circuit is used for receive a voltage signal for showing the running state of the circuit, and comparing the voltage signal with a preset threshold, and generating a logic level signal according to the comparison result, and outputting the logic level signal to the logic control circuit; the input of said logic control circuit is used for receiving a control signal transmitted from said micro control chip, and making logical operation for said logic level signal and control signal, and outputting the operation result to the pins of said functional chip. The invention also reveals a method thereof.

Collaborative operation system and method, concrete pumping apparatus and agitating truck

The invention relates to a collaborative operation system and method, a concrete pumping apparatus and an agitating truck. A detection device in the collaborative operation system detects concrete level information and/or concrete remain information in a hopper; and a control device receives a detection signal and controls the discharge speed of the agitating truck according to a prestored control strategy, so that the concrete in the hopper can not overflow or be pumped emptily, or the level of the concrete in the hopper is maintained to a certain level, thereby implementing collaborative operation between the pumping truck and the agitating truck. By using the invention, the pumping truck and the agitating truck can implement collaborative operation at the concrete construction site, and one operator can be saved. The invention also provides a pumping apparatus provided with the detection device and an agitating truck provided with the control device, so that the pumping apparatus and ...

MAGNETIC HOLDING TYPE TRACTIVE ELECTROMAGNET AND CONTROL CIRCUIT THEREOF

This invention relates to an electric operating unit and its dedicated control circuit installed on such electric equipment as electromagnetic valve and relay, magnetic initiator, contact and electromagnetic brake. The exciting coil is automatically turned off after electromagnet is picked up, so having the working characteristics of instantaneous energizing pickup, constant-magnetic self-holding, and instantaneous energizing release. It features saving electric energy (up to 99.9%), superspeed operating, high reliable traction of electromagnet, saving copper, no need of silicon steel sheet and simple manufacture technology.

Matching authentication method, apparatus and system for radio communication apparatus

The invention discloses a matching authentication method for wireless communication equipment. The method comprised the following steps: a device at the transmitting end sends a matching request to a device at the receiving end; the device at the transmitting end can be used for receiving the response messages feedback by the device at the receiving end, and the response messages are carried with feature codes; the feature codes are obtained through the end at the transmitting end, and the feature codes are taken as the authorization codes communicated with the receiving end. The invention also provides a wireless communication device with a function of matching authentication correspondingly. The wireless communication device comprises a memory unit, a communication unit, and an authorization unit and a feature code updating unit. The invention also provides a wireless communication system with the function of matching authentication. By adopting the method, the wireless controller is ...

Method and device for calibrating zero position output value of sensitive shaft of tilt angle sensor

The invention discloses a method for calibrating a zero position output value of a sensitive shaft of a tilt angle sensor. The tilt angle sensor is a tilt angle sensor of a capacitive type acceleration transducer. The method comprises the following steps: fixing a tilt angle sensor circuit board on a plane; making the sensitive shaft of the tilt angle sensor parallelling to the direction of gravity, and applying a first action force on a movable polar plate of a sensor capacitor; acquiring a first calibration factor value; applying a second action force on a movable polar plate of a sensor capacitor in the direction of the sensitive shaft; and ensuring that the second action force and the first action force have same strength and opposite directions by taking the capacitive type acceleration transducer as the reference; acquiring a second calibration factor value; and acquiring a zero position output value of the sensitive shaft, wherein the zero position output value is equal to 1/2 of ...

ANGLE MEASUREMENT DEVICE, ANGLE MEASUREMENT METHOD AND CONSTRUCTION MACHINERY

An angle measurement device includes a microprocessor, a primary acceleration transducer, an output device, and an auxiliary acceleration transducer. There is a predetermined angle between a positive direction of a primary sensitive axis of the primary acceleration transducer and that of a auxiliary sensitive axis of the auxiliary acceleration transducer; the primary acceleration transducer and the auxiliary acceleration transducer output respectively a first initial parameter and a second initial parameter; the microprocessor obtains a first actual parameter of the primary acceleration transducer according to the first initial parameter, the second initial parameter and the predetermined angle and then gets an angle parameter according to the first actual parameter; the first actual parameter characterizes the parameter of the primary acceleration transducer in the case of no external interference. An angle measurement method and a construction machinery with the angle measurement device is also provided. The provided angle measurement device and method can obtain measuring result in dynamic state accurately. 1. An angle measurement device , comprising a microprocessor , a primary acceleration transducer , and an output device , characterized in that the angle measurement device further comprises at least one auxiliary acceleration transducer , and there is a predetermined angle between a positive direction of a primary sensitive axis of the primary acceleration transducer and a positive direction of a auxiliary sensitive axis of the auxiliary acceleration transducer , and the predetermined angle is greater than 90° and less than 270°;the primary acceleration transducer and the auxiliary acceleration transducer are configured to output a first initial parameter and a second initial parameter respectively;the microprocessor is configured to obtain a first actual parameter of the primary acceleration transducer according to the first initial parameter, the second ...

DETECTING DEVICE AND PUMPING EQUIPMENT FOR CONCRETE

A detecting device for detecting the volume of a material in a material container and a concrete pumping apparatus comprising the above detecting device are disclosed. The detecting device comprises a soft container full of a medium; a medium container in communication with the soft container; a volume detecting sensor for detecting the volume of the medium in the medium container; the soft container is provided within the material container and immersed in the material of the material container, and under the extrusion of the material, the medium in the soft container enters the medium container, the volume detecting sensor detects the volume of the medium in the medium container; and the volume of the material can be calculated according to a preset relationship between the volume of the medium in the medium container and the volume of the material in the material container. 11. A detecting device for detecting the volume of a material in a material container () comprising:{'b': '2', 'a soft container () full of a medium;'}{'b': 3', '2, 'a medium container () in communication with the soft container (); and'}{'b': '2', 'a volume detecting sensor for detecting the volume of the medium in the medium container ();'}{'b': 2', '1', '1', '2', '3', '3', '1, 'the soft container () being provided in the material container () and immersed in the material in the material container (), under the extrusion of the material, the medium in the soft container () enters the medium container (), and the volume detecting sensor detecting the volume of the medium in the medium container (); calculating the volume of the material according to a preset relationship between the volume of the medium in the medium container and the volume of the material in the material container ().'}22121. The detecting device of claim 1 , wherein the bottom of the soft container () is fixed with the bottom of the material container () claim 1 , and the side of the soft container () abuts against the ...

GTAW System and Welding Method for thick plates with an Ultra-narrow Gap

A GTAW system and a welding method suitable for ultra-narrow gaps, and belongs to the technical field of narrow gap welding. The device includes a argon arc welding machine, a GTAW torch, a welding trolley, a wire feeding device, and a gas protection device. The GTAW torch includes a rotating motor, a rotating tungsten, a conductive system, and a gas supply system. The non-axisymmetric rotating tungsten is drived by the rotating motor through the central rotating shaft. The conductive system is used for connecting and supplying electric power from the argon arc welding machine, and the air supply system is used for providing shielding gas into the welding torch. The GTAW torch is fixed on the welding trolley, and the GTAW torch is moved by the welding trolley, and the wire feeding device moves synchronously with the welding torch. 1. A GTAW system suitable for ultra-narrow gaps , comprising: an argon arc welding machine , a GTAW torch , a welding trolley , a wire feeding device , and a gas protection device;the GTAW torch includes welding torch shell, rotating motor, central rotating shaft, rotating tungsten, conductive system and air supply system; the rotating motor is connected to the rotating tungsten through the central rotating shaft; the rotating tungsten is a non-axisymmetric tungsten; the conductive system is used to connect with the welding machine and provide power; the air supply system is used to provide shielding gas into the welding torch;the GTAW torch is fixed on the welding trolley, and the welding trolley drives the GTAW torch to move;the wire feeder is mechanically coupled to the GTAW torch;the gas protection device is a case, and the case is disposed above the workpiece to be welded, the case is provided with a welding torch port and an air inlet; the GTAW torch is inserted into the welding torch port, and the case is connected to the external shielding gas system through the air inlet.2. The GTAW system for ultra-narrow gap according to claim 1 ...

Positioning method and device of arm support system and concrete pump truck

A positioning method of the boom system includes the steps of obtaining initial position parameters of a detection point according to the observation of a mobile GPS receiver to a satellite group, and obtaining carrier wave phase information transmitted by a reference GPS receiver (S100), in which a distance between the boom system and the reference station is less than a predetermined value; and then obtaining position parameters of the detection point according to the carrier wave phase information and the initial position parameters (S200). The technical solution utilizes the carrier wave phase differential principle to obtain the position parameters of the detection point, such that the precision thereof is up to a level of a centimeter or higher. When predetermined portions of the boom segments or the position parameters of the boom distal end are detected, their position parameters may be precisely determined. A positioning device of the boom system and a concrete pump truck including the device are also provided.