Method for detecting gastric electrogram slow wave signals on the basis of RLS adaptive filter

The invention discloses a method for detecting gastric electrogram slow wave signals on the basis of a recursive least squares (RLS) adaptive filter. The method comprises the following steps of: a, acquiring signals; b, amplifying the signals; c, converting analog signals into digital signals; d, processing the signals; e, preprocessing data; f, estimating noises; and g, processing on the basis of the RLS adaptive filter. The method has the following beneficial effects and advantages: 1, an adaptive processing filter for the gastric electrogram slow wave signals is designed by taking all noises of electrocardiograms, respiration signals, dithering and a signal amplification device as the noises of the gastric electrogram slow wave signals so as to reduce the complexity of the filter; and 2, the signal reproduction after the signals pass through the adaptive filter is measured so that the accurate reproduction of the gastric electrogram slow wave signals can be finished.

一种精密平行度测量方法

The method is as the follows: setting measured object on platform with rotation axis and to make the rotation axis be vertical to reference plane, disposing light source and camera to be used as measuring device and to make lens aligned to measured object sideface so as to produce image at measured object sideface by reflected light on the camera, setting lateral axis u and vertical axis v as coordinate system for formed image with original point at image centre and detection point at cross point of passing vertical axis by top or bottom plane of measured object and its sideface, describing parallel state of measured object plane relatively to the reference plane by measuring value of image position at detection point in rotation and to finally determine nonparallelism of the two as well as regulation position.

Man/computer intercommunication method and system based on nanometer operation realtime force-sensing and visual image

METHOD OF MEASURING ACCURATE PARALLELISM

Device for lossless automatic approximation by facing nano observation and nano operation

The invention relates to atomic force microscope (AFM)-based atomic force scanning microscope technology and discloses a device for lossless automatic approximation by facing nano observation and nano operation. A method for the lossless automatic approximation comprises the following steps of: driving a sample platform to rise by controlling a stepper motor; judging whether a sample is moved to a preset position or not by using detection signals of a laser receiver so as to finish the initial setting of approximation; and controlling a piezoelectric ceramic driver to approximate upwards, and judging whether the sample is contacted with a probe or not by detecting a photoelectric sensor so as to finish the final approximation. By the method and the device, the problem that the thickness of the sample influences the approximation process in the sample approximation process is effectively solved, and damages to the probe and the surface of the sample are reduced in the approximation process ...

机器人直线轨迹特性测量方法及所用测量装置

The present invention belongs to the technology of robotics and is especially robot straight line track characteristic measuring method and device. Based on structural light 3D visual measurement principle, linear structural light is made to combine with CCD camera to constitute sensor and form geometric model of structural light reflecting imaging. Sensor in motion is used to scan and image the reference object, and visual image processing technology is adopted to calculate the continuous position and gesture relationship between the sensor and the reference coordinate system, so as to realize the detection of robot linear track. The present invention has low cost, convenient use and high performance, is practical, and may be used in the non-contact measurement of robot linear track and repeatability.

Method for processing temperature sensor chip based on carbon nanotube-electrode structure

The invention discloses a method for processing a temperature sensor chip based on a carbon nanotube-electrode structure. A carbon nanotube is assembled on an electrode by a dielectrophoresis technology; 0.01 mass percent carbon nanotube solution is adopted in the dielectrophoresis technology (a solvent is acetone with the purity of over 99 percent), and is subjected to dispersion preprocessing by a probe ultrasonic machine; and in the process of assembling the carbon nanotube by dielectrophoresis, the alternating voltage parameters of the adopted dielectrophoresis are that: the voltage amplitude is 10V, the frequency is 1MHz, and the waveform is square wave. The invention also discloses the processing steps of the electrode with the carbon nanotube-electrode structure. Eight independent temperature sensing units are integrated in a 2mm*2mm area of a temperature sensor core processed by the method, and the sensor chip has low energy consumption and high sensitivity.

Sub- and micro- Newton level force measuring system

The invention relates to a technology for measuring micro Newton force based on a PVDF piezoelectric material, particularly a system for measuring submicro Newton force which comprises a micro force perception measuring head, a signal disposal circuit and a data acquisition module, wherein the micro force perception measuring head receives micro force from a probe, converts a force signal to electric charge and then sends the electric charge to the signal disposal circuit; the signal disposal circuit converts the electric charge into a sizable and detectable pressure signal and sends the pressure signal to the data acquisition module; the data acquisition module conducts A/D convert of the received pressure signal and converts a pressure value into a micro force value by using the relationship between the calibrated micro force and the output pressure of the signal disposal circuit. The technology solves the problem of measuring submicro Newton contact force during the micro assembling ...

Omnibearing position transducer

In the omnibearing position transducer, the motor installed coaxially with a code wheel is meshed via an installing board to a transmission reducing mechanism; the rotating head with lens is connected to an installation holder bearing on the transmission reducing mechanism; the modulated laser emitter with optoelectronic receptor on its one side is fixed below the transmission reducing mechanism and on the installing board; the input of signal selector is connected to both the modulated laser emitter and the output of the optoelectronic receptor; the data collecting processor has its input connected to the code wheel and the signal selector; and several cooperative targets are set in the space in the same level as the rotating head. The transducer can strengthen the autonomic capacity of moving carrier and has high operation efficiency and flexibility.

Sample nondestructive approach method and implementation device facing to nano collimation and operation

The invention discloses a sample nondestructive approximation method regarding nanometer observation and operation. A sample is controlled to do nanometer level initial adjustment movement relative to a probe and to do nanometer level precise movement. After undergoing the feedback control step of checking position variation signal of a reflected laser spot, the aim of controlling the sample to approach the probe without damage is achieved through carrying out feedback control of checking the photoelectric detection signal produced when the sample approaches the probe and generates an atomic force action. The invention can avoid probe or sample damage caused by collision approximation.

Realizing method for low value touch interaction interface based on scam probe microscope

Device for generating mobile electric field force and its implementing method

The invention relates to an alternating electric field for electrophoresis (EP) and a travelling wave dielectrophoresis (twDEP) electric field generation technique, specifically to a device and a method for generating a twDEP electric field force. The device comprises a microprocessor for communicating with an upper computer, receiving and outputting a sinusoidal wave frequency and an initial phase angel parameter specified by the upper computer, communicating with a frequency synthesis module and performing parameter setting; a communication module used as a standard interface of the microprocessor and the upper computer; and a frequency synthesis module for receiving a command form the microprocessor, automatically generating a sinusoidal wave with the same initial phase angel and frequency, and outputting the signal to an amplitude adjustment module. The invention can generate an electrophoretic force for operation of micro/nano substances by changing the phase, amplitude and frequency ...

Rapid template-free cell graphing method

The invention relates to a novel cell graphing method, and concretely relates to a cell graphing method based on optically-induced dielectrophoresis (ODEP) technology. The method utilizes the optically-induced dielectrophoresis (ODEP) technology to form pattern-controllable hydrogel on hydrogenated amorphous silicon and is used to control cell growth. A non-uniform electric field induced by a light spot is capable of inducing motion of a micrometer particle and motion of a solution in a solution, and generating the phenomena of dielectrophoresis and an electroosmotic flow. The micropattern preparation method does not need a physical template, and a needed PEGDA hydrogel micropattern can be obtained by designing the light spot directly according to a demanded shape, and the size and the position of the PEGDA hydrogel micropattern can be dynamically controlled. By using the method, the growth position and the growth pattern of cells can be controlled, and influence of microscopic environment ...

Omnibearing position transducer

PSD光电信号极限放大器

This invention provides a PSD photoelectric signal ultimate amplifier composed of an operational amplifier, a first-fifth resistors and a first, second capacitors, among which, the negative end of the operational amplifier is connected with the first capacitor and second resistor to make up a signal channel to connect to the ground via the first resistor, the output end is 6 feets, the said second capacitor, and the third resistor make up the amplified feed back loop to be connected with the feed back end of it, the fourth and fifth resistors are connected with the positive input end and reference voltage end to regulate its stability.

Method for preparing carbon nano-tube AFM probe based on electromagnetic field

The invention relates to a method for preparing a carbon nano-tube AFM probe based on an electromagnetic field, which comprises the steps of: establishing a dielectrophoretic force theoretical model of carbon nano-tubes in a solution under an external electric field; adjusting the voltage amplitude between the prior AFM probe and a conductive substrate or the gap between the prior AFM probe and the conductive substrate, and controlling the field strength between the prior AFM probe and the conductive substrate; imposing an alternating current electric field between the prior AFM probe and theconductive substrate through a waveform signal generator; under the monitoring of an optical microscope, dripping the carbon nano-tube solution into the space between the prior AFM probe and the conductive substrate until the tail end of a tip of the prior AFM probe is immersed; and keeping the probe stand for 5 to 50 seconds, and then disconnecting an external alternating current signal to finish the ...

Device for generating mobile electric field force and its implementing method

The invention relates to an alternating electric field for electrophoresis (EP) and a travelling wave dielectrophoresis (twDEP) electric field generation technique, specifically to a device and a method for generating a twDEP electric field force. The device comprises a microprocessor for communicating with an upper computer, receiving and outputting a sinusoidal wave frequency and an initial phase angel parameter specified by the upper computer, communicating with a frequency synthesis module and performing parameter setting; a communication module used as a standard interface of the microprocessor and the upper computer; and a frequency synthesis module for receiving a command form the microprocessor, automatically generating a sinusoidal wave with the same initial phase angel and frequency, and outputting the signal to an amplitude adjustment module. The invention can generate an electrophoretic force for operation of micro/nano substances by changing the phase, amplitude and frequency ...

Two-dimensional uncoupled nano-scale motion platform mechanism

The invention relates to a two-dimensional uncoupled nano-scale motion platform mechanism which belongs to the technical field of nano-scale displacement outputting and positioning. The mechanism comprises a moving platform, an inner framework and an outer framework which are crossly connected to form an integral structure through flexible guide connecting rib plates, i.e. a flexible guide connecting rib plate is connected between a symmetrical border of the inner framework and the moving platform, and a flexible guide connecting rib plate is connected between the other symmetrical border and the outer framework; the other pair of borders between the moving platform and the inner framework as well as between the inner framework and the outer framework are respectively and symmetrically provided with a piezoelectric ceramic driver and a preloaded driving spring; and the piezoelectric ceramic driver is connected with an outer controller. In the invention, the connecting structure of the separate ...

Single-wall carbon nano tube and multi-wall carbon nano tube separation method

The invention discloses a method used for separating single-walled carbon nano-tubes (SWNTs) from multi-walled carbon nano-tubes (MWNTs) based on the centrifugal principle; by utilizing the difference of the SWNTs and the MWNTs on the density and appearance dimension, under the centrifugal force generated by rotation motion, the SWNTs and the MWNTs in a centrifugal gradient solution deposits at different speeds; and by establishing the kinetic equation, the positions of two gathering areas formed in the container by the SWNTs and the MWNTs are determined, thus achieving the effective separation of the SWNTs and the MWNTs. The centrifugal separation method generates no damages on the physical and chemical properties of the carbon nano-tubes, has strong operability and repeatability, and provides new feasible technical means for the purification of SWNTs.

Rinsing method-based single-walled carbon nanotube pretreatment method

The invention relates to the field of nano operations, in particular to a rinsing method-based single-walled carbon nanotube pretreatment method, which comprises the following steps of: mixing anionic surfactant solution with single-walled carbon nanotubes to absorb lipophilic groups of an anionic surfactant onto sidewalls of the single-walled carbon nanotubes, performing ultrasonic oscillation and pulsing on the single-walled carbon nanotubes treated by the anionic surfactant and directionally arranging the treated single-walled carbon nanotubes to realize the effective dispersion of the single-walled carbon nanotubes to finish the pretreatment. In the method provided by the invention, damages to the physical and chemical properties of the carbon nanotubes are avoided, high operability and high repeatability are ensured, and a novel practical technical approach for the pretreatment of the single-walled carbon nanotubes is provided.

System for repeated detecting position precision of robot

The detection system consists of measuring body and measuring system and it features that the measuring body is one rectangular rigid body constituted by three orthogonal measuring planes; that the measuring system is one three-dimensional coordinate system corresponding to the measuring body constituted by six sensors; and that the transformation matrix F is used to calculate the position and attitude relationship between the measuring body and the measuring system based on the formula. The present system has least number of dimensions but high measurement accuracy.

System for repeated detecting position precision of robot

Wave energy absorbing and converting method and system

SPM probe enhancement work method

The invention relates to a technique for operating a nanometer-sized object in the nanometer science and technology and in particularly discloses an SPM probe reinforcing operating method. A start position and a termination positioned are determined according to control parameters; and the number of probe operation points is calculated and operations of translation and rotation are realized, according to a single-step operation distance or rotation angle, an operation point distance and an operation direction, which are regulated in a translation operation programming method and a rotation operation programming method based on probe preprogramming. The adoption of the invention can overcome the defect that due to the small diameter of the probe, only point operation can be performed to anoperated object, but effective control to a posture of the operated object is impossible. The invention also has the advantages of small step pitch, fast multi-point orientation, highly efficient operation ...

Sample nondestructive approach method and implementation device facing to nano collimation and operation

The invention discloses a sample nondestructive approximation method regarding nanometer observation and operation. A sample is controlled to do nanometer level initial adjustment movement relative to a probe and to do nanometer level precise movement. After undergoing the feedback control step of checking position variation signal of a reflected laser spot, the aim of controlling the sample to approach the probe without damage is achieved through carrying out feedback control of checking the photoelectric detection signal produced when the sample approaches the probe and generates an atomic force action. The invention can avoid probe or sample damage caused by collision approximation.

Piezoelectric ceramic tube silver layer electrode nondestructive dividing device

The invention relates to electrode dividing technology of a piezoelectric ceramic tube by an electro-machining method, and discloses a piezoelectric ceramic tube silver layer electrode nondestructive dividing device, which realizes nondestructive dividing of a silver layer electrode of the piezoelectric ceramic tube. The device comprises a piezoelectric ceramic tube clamp, a piezoelectric ceramic tube cutter and a pedestal, wherein the clamping ends on the two sides of the clamp are conical; one end is detachable, and four plungers are uniformly distributed at the other end for fixing the piezoelectric ceramic tube; the piezoelectric ceramic tube cutter mainly comprises a slide block, an elastic sheet and a probe; the probe is fixed on the elastic sheet; the elastic sheet is fixed on the slide block through a spacer, so the probe is insulated from the slide block for cutting a piezoelectric ceramic tube surface silver layer electrode; and the pedestal is mainly used for fixing the piezoelectric ...

Method for preparing carbon nano-tube AFM probe based on electromagnetic field

The invention relates to a method for preparing a carbon nano-tube AFM probe based on an electromagnetic field, which comprises the steps of: establishing a dielectrophoretic force theoretical model of carbon nano-tubes in a solution under an external electric field; adjusting the voltage amplitude between the prior AFM probe and a conductive substrate or the gap between the prior AFM probe and the conductive substrate, and controlling the field strength between the prior AFM probe and the conductive substrate; imposing an alternating current electric field between the prior AFM probe and the conductive substrate through a waveform signal generator; under the monitoring of an optical microscope, dripping the carbon nano-tube solution into the space between the prior AFM probe and the conductive substrate until the tail end of a tip of the prior AFM probe is immersed; and keeping the probe stand for 5 to 50 seconds, and then disconnecting an external alternating current signal to finish ...

SPM probe enhancement work method

The invention relates to a technique for operating a nanometer-sized object in the nanometer science and technology and in particularly discloses an SPM probe reinforcing operating method. A start position and a termination positioned are determined according to control parameters; and the number of probe operation points is calculated and operations of translation and rotation are realized, according to a single-step operation distance or rotation angle, an operation point distance and an operation direction, which are regulated in a translation operation programming method and a rotation operation programming method based on probe preprogramming. The adoption of the invention can overcome the defect that due to the small diameter of the probe, only point operation can be performed to an operated object, but effective control to a posture of the operated object is impossible. The invention also has the advantages of small step pitch, fast multi-point orientation, highly efficient operation ...

Omnidirectional stereo vision imaging method and apparatus

Spark discharge machining-based lossless segmentation method for silver layer electrode of piezoelectric ceramic tube

The invention discloses a spark discharge machining-based lossless segmentation method for a silver layer electrode of a piezoelectric ceramic tube, and particularly discloses a method for realizing lossless segmentation of the silver layer electrode of the piezoelectric ceramic tube, which realizes quick and effective removal of a silver layer from the piezoelectric ceramic tube without damaging the piezoelectric ceramic tube. In the method, the silver layer on the surface of the piezoelectric ceramic tube serves a cathode, a self-made cutting probe serves as an anode and is matched with a fixing device and a movable guiding device, and the segmentation of the silver layer electrode of the piezoelectric ceramic tube is finished by melting the silver layer through inter-electrode spark discharge. When applied to the segmentation of the silver layer of the piezoelectric ceramic tube, the method has the advantage of high safety efficiency, does not damage a ceramic layer of the piezoelectric ...

Nanometer operating system based on SPM probe enhancement work

The invention discloses a nanometer operating system based on a probe reinforcing technique. The nanometer operating system comprises a human-computer interaction interface and an SPM device, a programming layer and an operating layer. The human-computer interaction interface provides an operator with an operation requirement; the programming layer works out a horizontal coordinate difference and a vertical coordinate difference of an initial position and a termination position of probe reinforcement, as well as an angle difference of the initial position and the termination position, then decomposes the difference values into a series of basic translation and rotation operations for reinforcing the probe, and then transmits an initial coordinate and a termination coordinate of the basic operations after the decomposition to the operating layer through the Ethernet; and the operating layer takes the initial coordinate and the termination coordinate as input data, performing translation ...

PSD based three-dimensional measuring method

The invention discloses a PSD-based 3D measuring algorithm, using a camera unit composed of line array PSD and cylindrical lens to observe space object point P and obtaining a position signal of a projected point u of the space point P on the PSD camera. The position signal can only define a space measuring plane; when multiple PSD cameras are used at the same time, multiple projected points u obtained by a single space point p can define multiple similar planes; these planes are nonparallel and their intersection point is just the space point P; on the condition of these plane equations being able to be determined, the position of the space point P can be calculated by reference frame defined by the above planes; for implementing the above 3D positioning, firstly marking a PSD camera needed to be used and obtaining a position relation between the reference frame and the PSD projected point u, and as completing marking, making 3D positioning calculation. The invention can implement PSD ...

Sub- and micro- Newton level force measuring system

The invention relates to a technology for measuring micro Newton force based on a PVDF piezoelectric material, particularly a system for measuring submicro Newton force which comprises a micro force perception measuring head, a signal disposal circuit and a data acquisition module, wherein the micro force perception measuring head receives micro force from a probe, converts a force signal to electric charge and then sends the electric charge to the signal disposal circuit; the signal disposal circuit converts the electric charge into a sizable and detectable pressure signal and sends the pressure signal to the data acquisition module; the data acquisition module conducts A/D convert of the received pressure signal and converts a pressure value into a micro force value by using the relationship between the calibrated micro force and the output pressure of the signal disposal circuit. The technology solves the problem of measuring submicro Newton contact force during the micro assembling ...

Nanometer operating system based on SPM probe enhancement work

The invention discloses a nanometer operating system based on a probe reinforcing technique. The nanometer operating system comprises a human-computer interaction interface and an SPM device, a programming layer and an operating layer. The human-computer interaction interface provides an operator with an operation requirement; the programming layer works out a horizontal coordinate difference anda vertical coordinate difference of an initial position and a termination position of probe reinforcement, as well as an angle difference of the initial position and the termination position, then decomposes the difference values into a series of basic translation and rotation operations for reinforcing the probe, and then transmits an initial coordinate and a termination coordinate of the basic operations after the decomposition to the operating layer through the Ethernet; and the operating layer takes the initial coordinate and the termination coordinate as input data, performing translation operation ...

Method and device for lossless automatic approximation by facing nano observation and nano operation

The invention relates to atomic force microscope (AFM)-based atomic force scanning microscope technology and discloses a method and a device for lossless automatic approximation by facing nano observation and nano operation. The method comprises the following steps of: driving a sample platform to rise by controlling a stepper motor; judging whether a sample is moved to a preset position or not by using detection signals of a laser receiver so as to finish the initial setting for approximation; and controlling a piezoelectric ceramic driver to approximate upwards, and judging whether the sample is contacted with a probe or not by detecting a photoelectric sensor so as to finish the final approximation. By the method and the device, the problem that the thickness of the sample influences the approximation process in the sample approximation process is effectively solved, and damages to the probe and the surface of the sample are reduced in the approximation process.

Microfluidic chip based on pneumatic micro pumps and micro mixer

The invention discloses a microfluidic chip based on pneumatic micro pumps and a micro mixer. The microfluidic chip adopts a three-layer structure, a bottom layer is a glass substrate, and a gas drive layer and a liquid flow layer which are made of elastic materials are successively arranged on the substrate; the liquid flow layer comprises a micro mixing chamber, a plurality of micro liquid storage tanks and fluid channels, one end of each fluid channel is connected to the corresponding micro liquid storage tank, and the other end of each fluid channel is connected to the micro mixing chamber; the gas drive layer comprises the micro mixer, a plurality of pneumatic micro pumps and gas channels; externally-added pulse gas pressure is orderly controlled to enter the gas drive layer by an electromagnetic exhaust valve, the pneumatic micro pumps made of the elastic materials and the micro mixer are allowed to work, multiple channels of different solutions are orderly injected into the micro ...

Carbon nanotube-electrode structure-based temperature sensor chip

The invention discloses a carbon nanotube-electrode structure-based temperature sensor chip. The temperature sensor chip comprises a base, carbon nanotubes and electrodes, wherein the electrodes are arranged on the base in pair; the carbon nanotubes are electrically connected with the pair of electrodes and have high heat conductivity; and the resistivity of the metal carbon nanotubes varies along with temperature variation. By using the characteristic that the resistivity of the carbon nanotubes varies along with the temperature variation, the invention provides an energy-efficient and high-flexibility sensor chip structure in which carbon nanotube-electrodes can be used as temperature sensing units; and the sensor chip integrates eight independent temperature sensing units in a region of 2mm*2mm. In the temperature sensor chip structure, the assembly of the carbon nanotubes on a microelectrode array can be realized by an electrophoresis technology to form the temperature sensing units ...

Stomach electric slow-wave signal detector based on RLS (Recursive Least Squares) adaptive filter

The invention discloses a stomach electric slow-wave signal detector based on an RLS (Recursive Least Squares) adaptive filter, which comprises a hardware part and a software processing part, wherein the hardware part comprises a body surface measuring electrode, an analog signal amplifier, an A/D (analog-to-digital) conversion card and a digital arithmetic device; and the software processing part comprises a digital preprocessing module, a noise estimation module, an RLS adaptive filtering module, a display device, a storage device and the like. The invention has the following advantages: 1. the design of the adaptive processing filter for stomach electric slow-wave signals is realized by using noises of electrocardio signals, breath signals, jitters, and signal amplifier as the noises of the stomach electric slow-wave signals, thereby lowering the complexity of the filter; and 2. the measured signals recur through the adaptively filtered signals, thereby completing the accurate recurrence ...