306results about How to "Easy Calibration" patented technology

The invention discloses a monocular vision pose measurement method and system based on a circular feature target spot, and the method comprises the following steps: camera calibration, image collection, image preprocessing, and feature point detection and matching: employing Hough circle detection to extract the center two-dimensional pixel coordinate and radius of the circular feature target spot, obtaining a uniquely determined relationship between the feature target spots according to the circle center coordinates and the radius information; performing pose measurement, and obtaining a rotation matrix R and a translation vector T which are converted from a target coordinate system in each collected pose image to a camera coordinate system according to a PnP algorithm; and solving the relative pose. According to the method, a specially designed cooperative target containing five circular characteristic target spots is used as a target object, and a rapid detection algorithm realized according to target characteristics is combined, so that circle center matching sorting is realized, and the precision is improved. The method has the advantages of being simple in structure, simple in camera calibration, large in measurement view field, high in real-time performance and the like, and meanwhile the defects that the view field is small and stereo matching is difficult in stereo vision are overcome.

The invention relates to the technical field of robot teaching-free welding, and particularly discloses a robot teaching-free welding system based on visual localization and a welding method.The robot teaching-free welding system comprises a PLC, a power module, a wireless communication module and a visual localization coordinate conversion module. The path planning optimization module directly generates a welding path according to a visual positioning result, tedious operation is reduced, the problem of poor dependence and adaptability on pre-stored data is solved, the visual acquisition module and the positioning module work cooperatively, workpiece position and posture information is updated in real time, and the positioning precision is improved. The teaching-free intelligent decision-making and optimization module is combined with real-time data to adjust a path and parameters, the image processing and path planning optimization module generates a proper path according to image information for a complex workpiece, the sensor fusion module fuses vision and other sensor data, the adaptability of the system to the complex workpiece is enhanced, and the welding quality is guaranteed.

The invention discloses a nuclear reactor underwater maintenance robot and a use method thereof. The nuclear reactor underwater maintenance robot comprises a connecting mechanism, a telescopic positioning mechanism, a lifting mechanism, a rotating mechanism and a mechanical arm. The telescopic positioning mechanism of the nuclear reactor underwater maintenance robot has a telescopic function, the maintenance robot can be integrally positioned on the wall surface of a container through the telescopic positioning mechanism, and the posture of the underwater maintenance robot is adjusted through the multiple telescopic assemblies, so that the position of the underwater maintenance robot is conveniently calibrated; and the position of each telescopic assembly can be finely adjusted independently, and posture adjustment of the underwater maintenance robot is facilitated. Meanwhile, the lifting mechanism and the rotating mechanism are used for driving the mechanical arm to lift and rotate respectively, so that the mechanical arm can work better, the automatic replacement of the probe frame and the automatic replacement of the probe underwater calibration or maintenance tool frame can be realized through the mechanical arm, and the working efficiency is improved.

The invention provides a laser scanning galvanometer with a self-calibration system, and relates to the technical field of scanning galvanometers, the laser scanning galvanometer comprises a laser scanning galvanometer body, the laser scanning galvanometer body is internally provided with an inner cavity, the inner cavity is internally provided with a calibration structure, the calibration structure comprises a first calibration assembly, and a special-shaped support is fixedly installed on the inner wall of the inner cavity. A first circular groove is formed in the special-shaped support in a penetrating mode, the two first damping bearings are both arranged in the first circular groove, and outer rings of the two first damping bearings are both fixedly installed on the inner wall of the first circular groove. The overall structure of the calibration structure is mostly integrated on the special-shaped support, and the vibrating lens assembly on the high-speed motor generally has a replacement function, so that the first worm gear is conveniently arranged on the output shaft of the high-speed motor, additional installation on the existing basis is facilitated, the improvement cost is low, and the practicability is improved.

The utility model relates to the technical field of steel rail detection, in particular to a steel rail size detection and calibration device which comprises two carrier rollers arranged side by side, and the carrier rollers form a conveying channel used for conveying a steel rail to be detected. The guide mechanism is used for guiding the movement of the steel rail to be detected; a calibration mechanism is arranged between the two carrier rollers and provided with a plurality of calibration points in the length direction of the conveying channel. And the carrier roller and the calibration mechanism are fixed on the base through a bracket. According to the utility model, the calibration point along the length direction of the steel rail to be measured is arranged on the external calibration mechanism of the steel rail to be measured, so that the inconvenience of manually arranging the calibration point on the steel rail to be measured is avoided. The device can calibrate a distance between the two ends of the steel rail to be measured, and is beneficial for realizing automation.

The invention belongs to the technical field of sewage pipeline flow detection, and particularly relates to a sewage pipeline flow calculation method based on electromagnetic induction, which comprises the following steps: step 1, a detection mechanism is arranged between two butt-joint flowing sewage pipelines, and the detection mechanism is composed of a measuring pipe, an electrode and an excitation coil, the magnet exciting coil wraps the outer arc surface of the measuring tube. The sewage pipeline flow calculation method based on electromagnetic induction is high in measurement precision and suitable for various conductive media including sewage, corrosive liquid and a mixture containing solid particles; the measuring range is wide, and the device is suitable for measuring fluids with different pipe diameters and flow ranges. The electromagnetic flowmeter can be quickly mounted on the sewage pipe through the quick clamping mechanism, so that the mounting time is shortened, the labor intensity is reduced, and maintenance and calibration are facilitated; measurement errors caused by fluid interference are avoided by reducing accumulation of sediments, and the accuracy of circulation measurement is further enhanced by circular motion measurement of the electrodes.

The invention discloses a relation calibration method and device of a two-axis turntable and a collimator, a medium and a product, and relates to the technical field of data processing. The method comprises the following steps: when the theodolite and the collimator are in a light focusing condition, acquiring first angle data of rotation of the two-axis turntable and second angle data of rotation of the theodolite; constructing a coordinate system conversion model according to the first angle data and the second angle data; based on the first angle data, the second angle data and the coordinate system conversion model, determining a plurality of conversion matrixes among the two-axis turntable coordinate system, the theodolite coordinate system of the theodolite and the collimator coordinate system; and determining the conversion relation between the two-axis turntable and the collimator according to the plurality of conversion matrixes. According to the invention, the two-axis turntable in the ground detection simulation system can be accurately aligned and calibrated with the collimator, reliable guarantee is provided for research, development and testing of the laser communication terminal, and the accuracy and reliability of satellite communication simulation are improved.

The invention relates to a Kuder optical path correction method based on laser emission. Firstly, a plane mirror 19 is used for calibrating the installation position of an auto-collimation observation mirror 2 on a laser emission fixing bin 1; replacing a plane mirror 19 with a standard pentaprism 5, and calibrating the arrangement position of the optical theodolite 4 by using the standard pentaprism 5; replacing the standard pentaprism 5 with a Kuder mirror I 11, and determining the mounting position of the Kuder mirror I 11 by using the auto-collimation observation mirror 2 and the optical theodolite 4; and finally, a servo stable rotary table azimuth frame 10 and a servo stable rotary table pitching frame 7 are sequentially mounted on the laser emission fixing bin 1, and an azimuth axis and a pitching axis of the Kuder optical path are respectively corrected by using a laser 8 and a front lens 6. The method has the advantages of simplicity in operation, high correction efficiency, high field adaptability, convenience in equipment disassembly and assembly and the like, the Kuder optical path can be simply and quickly corrected, the optical path deviation is effectively eliminated, and the accuracy and the reliability of optical measurement are improved.

The invention discloses a wire rope straightening machine, which relates to the technical field of wire rope processing, and comprises a lubrication straightening mechanism and an oil injection pump installed on one side of the lubrication straightening mechanism, wherein a straightening and winding mechanism is arranged on one side of the lubrication straightening mechanism, and a wire rope body is arranged inside the straightening and winding mechanism, wherein the lubrication straightening mechanism comprises an oil storage tank, wherein first lifting support columns are symmetrically installed at the bottom of the oil storage tank, and first lifting top plates are fixedly installed at the tops of two of the first lifting support columns, wherein a first lifting motor is fixedly installed at the top center position of the first lifting top plate, and a rotating storage arm is rotated around a second rotating shaft while being able to slide inside a rotating sleeve by starting a second rotating motor, so that the rotating storage arm drives the first straightening roller to fit the surface of the wire rope body, thereby performing preliminary straightening of the wire rope body and improving the straightening effect of the wire rope body.

The invention provides a finite element simulation method for a ribbed wallboard formed through laser shock. The finite element simulation method comprises the steps that initial laser shock pressure time-space distribution corresponding to laser process parameters is determined; applying the impact pit as a load to a laser multi-point continuous dynamic impact finite element model to obtain a simulated impact pit size; judging whether the size of the simulation and experiment impact pit is within an allowable error range or not; a strain field and a residual stress field after laser shock are obtained, and average inherent strain distribution in the depth direction is output; and introducing the average inherent strain distribution into the layered shell unit model of the ribbed wallboard and solving to obtain a deformation result of the ribbed wallboard impacted by the laser process parameters. Dynamic simulation of laser multi-point continuous impact is realized through display analysis, and deformation simulation of the ribbed wallboard formed through laser impact is realized through thermoelastic analysis, so that effective forming simulation can be performed on the complex ribbed wallboard, and the effects of low cost, high efficiency and accurate prediction result are achieved.

The invention discloses a laser vibration meter series reciprocating type optical frequency modulation calibration method and device, and belongs to the field of photoelectric measurement. The calibration device is mainly composed of a calibrated laser vibration meter, a first acousto-optic modulator, a second acousto-optic modulator, a lens, a first sinusoidal signal source, a second sinusoidal signal source, an FM signal source and a plane mirror. Aiming at a laser signal emitted by the laser vibration meter, the reversibility characteristic of a light path is utilized, a straight-line-shaped light path structure is used, a secondary light frequency modulation mode of the same group of optical devices is combined with secondary light frequency translation to realize output frequency translation and modulation control of the laser vibration meter, and a laser Doppler effect caused by different vibration waveform magnitude values is simulated. And the modulated laser is completely returned to the calibrated laser vibration meter in the original path, so that the change waveform of the vibration velocity value is replaced by the change waveform of the frequency value, and the calibration of the laser vibration meter is realized. The device has the advantages of portability, wide frequency range, wide amplitude range calibration, high precision and good stability.

The invention relates to a Bluetooth field intensity calibration method and device, computer equipment and a readable storage medium. The method comprises the steps that after Bluetooth connection is established between a digital key of a vehicle and the vehicle, the field intensity value of a Bluetooth signal sent by the digital key in the process of approaching the vehicle is acquired; acquiring a Bluetooth field intensity calibration value from the field intensity values; the Bluetooth field intensity calibration value is the field intensity value of the digital key under the condition that the distance between the digital key and the vehicle is a preset distance calibration value; and determining a corresponding relationship between the field intensity value of the digital key and the distance according to a preset distance calibration value and the Bluetooth field intensity calibration value. By adopting the method, the calibration convenience of the Bluetooth field intensity can be improved.

The invention discloses a common-view-field-free multi-target calibration method suitable for a robot scene, and the method comprises the following steps: constructing a robot tail end coordinate system, a virtual base coordinate system, a calibration plate coordinate system, and a camera coordinate system; obtaining a conversion relation from the calibration plate to the camera, a conversion relation from the camera to the tail end of the robot, a conversion relation from the tail end of the robot to the virtual base and a conversion relation from the virtual base to the calibration plate; moving three wrist joints of the robot, and shooting calibration plate images of the robot in different postures; obtaining measurement value data in the calibration plate image, and converting the measurement value data in the calibration plate image into corresponding value data under the calibration plate coordinate system; and real value data under the calibration plate coordinate system are obtained, the external parameters of the cameras relative to the robot tail end are separated based on the constraint relation between the real value data and the corresponding value data, the external parameter of each camera is obtained, and multi-target calibration is completed. The calibration algorithm has high flexibility, and the accuracy of the calibration process is ensured.

The utility model provides a waterproof coiled material compacting device, which belongs to the technical field of waterproof coiled materials and comprises a connecting plate, the bottom of the connecting plate is rotatably connected with a compacting roller through a rotating shaft, the top of the connecting plate is provided with an operating rod, two sides of the rotating shaft are oppositely provided with a connecting shaft and an auxiliary roller, and the side part of the connecting plate is provided with a connecting groove capable of being clamped on the connecting shaft in a penetrating manner; the auxiliary roller is slidably connected with a connecting plate for shielding the connecting groove, a limiting groove is formed in the position, at the connecting groove, of the auxiliary roller in a relatively penetrating mode, and a limiting assembly for limiting the limiting groove is arranged on the connecting plate. According to the waterproof roll compacting device, the limiting assembly is arranged, the connecting plate is inserted into the connecting groove, then the limiting assembly is used for limiting the limiting groove, the overall operation is simple, the compacting area of the compacting device can be changed according to the actual situation, the compacting efficiency of the waterproof roll is improved, and the application range of the waterproof roll compacting device is widened.

The invention discloses a high-temperature and high-pressure calibration wind tunnel and a throttling adjusting method thereof. The high-temperature and high-pressure calibration wind tunnel comprises an air compressor air source, an emptying adjusting valve, an air inlet adjusting valve, a mass flow meter, a heating device, a stable section, a test section, a spraying cooling device, a back pressure adjusting valve, a data acquisition system and a control system. An air source of the air compressor is a fixed-frequency continuous air source, the control system performs closed-loop control on the air inlet regulating valve and the emptying regulating valve by taking the air inlet flow as a closed-loop control feedback point, performs closed-loop control on the back pressure regulating valve by taking the static pressure of the test section as a closed-loop control feedback point, and calculates the airflow Mach number of the test section according to the total pressure of the stable section and the static pressure of the test section; and closed-loop continuous adjustment of the airflow Mach number of the test section is realized by controlling the emptying adjusting valve, the air inlet adjusting valve and the back pressure adjusting valve. According to the invention, the wide-range multi-working-condition continuous adjustment of the high-temperature and high-pressure thermal calibration wind tunnel can be realized under the condition of a fixed-frequency continuous air source, the calibration capability of the thermal calibration wind tunnel is improved, and the development cost is reduced.

The invention relates to a super-surface-based flat plate type super-integrated miniature spectral imaging system, which comprises a gold reflecting layer and a flat plate substrate reflecting layer integrated with a dispersion super-surface, a first focusing reflection super-surface, a second focusing reflection super-surface and a focusing transmission super-surface, incident light is split by the dispersion metasurface, then is reflected to the gold reflection layer, and then is sequentially focused by the two reflection metasurfaces and the transmission metasurface to be imaged on an image plane. The dispersion metasurface adopts a periodically arranged square nano-column diffraction grating structure and has stronger dispersion capability, and the other three metasurface elements are obtained by adopting phase optimization design, so that the imaging performance is excellent; the four metasurfaces are integrated on the same reflecting layer, system optics is only composed of two flat reflecting layers, wavefront regulation and control are achieved while light in a reflecting cavity is continuously reflected, the metasurface can be manufactured through the single photoetching technology, the structure is simple and compact, machining, assembling and adjusting are easy, and a new product is provided for a high-performance compact imaging spectrometer.

The invention discloses a horizontal installation method for a large connecting pipe of a dehydrogenation reactor, and belongs to the technical field of dehydrogenation reactor manufacturing. Determining a reference point for mounting the supporting leg; supporting legs and a bottom plate are installed; determining a datum point for connecting pipe installation; aBC, EH and F connecting pipes are installed; and detecting the overall levelness, wherein the ABC connecting pipe, the EH connecting pipe and the F connecting pipe are assembled and installed on the cylinder body in the horizontal direction. The invention further provides hoisting and auxiliary equipment thereof, the hoisting and auxiliary equipment is used for carrying out connecting pipe hoisting and assembling work, and the equipment comprises a hoisting mechanism and a supporting mechanism. According to the method, a traditional method for vertically installing the connecting pipe is abandoned, the large connecting pipe is installed at the horizontal position, supporting tool materials can be saved, the assembling efficiency of the connecting pipe and the supporting legs is improved, the assembling precision is guaranteed, and measurement convenience and precision are promoted; and the position of the to-be-mounted connecting pipe can be quickly corrected through hoisting and auxiliary equipment thereof, so that the mounting of the large connecting pipe is facilitated.

The invention discloses a dynamic calibration method for the sensitivity of a linear angular vibration sensor based on multi-frequency sine excitation. The method comprises the following steps: constructing a line angle vibration sensor sensitivity dynamic calibration device based on multi-frequency sine excitation; providing multi-frequency sine line angle excitation; collecting a motion sequence image and an output signal; calculating the line angle excitation displacement of the calibrated line angle vibration sensor; and calculating to obtain the sensitivity of the calibrated line angle vibration sensor. The method is efficient and accurate, and the calibration process is simplified; the method based on monocular vision is used for measuring the vibration displacement of the linear angle vibration sensor at different frequencies, and only a simple monocular vision measuring system is needed; the multi-frequency sine line angle excitation output by the line and angle vibration generating device can be controlled, and the influence of other extra excitation on the sensor can be effectively avoided; the method is suitable for different types of sensors, and the multi-frequency sine excitation method has a wide application range and can be used for calibrating different types of linear angle vibration sensors, such as gyroscopes and accelerometers.

The invention provides a method for regulating and controlling a hydrodynamic balance valve with a real-time load feedback function, and the method comprises the steps: collecting the strain, water level, gas, vibration and motor current data of the balance valve in real time, constructing and utilizing a comprehensive load balance model, and calculating the effective safety torque of the balance valve in real time at an edge calculation layer; a mechanical wear degradation factor is calculated based on the action history and the current variance of the locking mechanism, and the instantaneous instability risk probability is calculated in combination with the effective safety torque and the current locking torque; according to the instantaneous instability risk probability, an output mode of a locking mechanism is dynamically adjusted to execute a graded locking action; and periodically calculating a full-life-cycle health degree index, and automatically generating a maintenance or replacement work order when the full-life-cycle health degree index is lower than a preset threshold value. According to the invention, the conversion from passive alarm to active defense is realized, and the safety and operation and maintenance efficiency of the urban balance valve in rainstorm, heavy load and corrosion environments are obviously improved.

The invention discloses a laser cutting equipment calibration method, system and equipment and a storage medium, laser cutting equipment comprises a shaft A, a shaft B and a cutting head, the shaft A and the shaft B are rotating shafts, the shaft B is installed on the shaft A, the cutting head is installed on the shaft B, and when the center line of the cutting head is parallel to the shaft Z, the position of the cutting head is set as the initial position; the intersection point of the center line of the cutting head at the initial position and the axis of the A shaft is set as the rotation center OA of the A shaft; the laser cutting equipment calibration method comprises the following steps: moving a cutting head to an initial position; the A shaft drives the cutting head to rotate by a first angle theta; acquiring a first moving distance ZA in the Z-axis direction generated by rotating a tool nose point P of the cutting head by a first angle theta; according to the laser cutting equipment calibration method, the position calibration process of the tool nose point can be simplified, and the position calibration efficiency of the tool nose point is improved.

The invention discloses a reinforced embankment rib deformation characteristic supergravity test method based on a PIV technology. A test device adopted by the method comprises a supergravity model box with an observation window, an industrial camera and an image processing system. The reinforced embankment model is arranged in the supergravity model box, the supergravity model box and the industrial camera are arranged in the supergravity geotechnical centrifuge, a lens of the industrial camera is aligned to the reinforced embankment model through an observation window on the supergravity model box, and an identification point is arranged on one side of the observation window of the reinforced embankment model. Under the high gravity field provided by the centrifugal machine, the industrial camera photographs the deformation process of the reinforced embankment model, and the displacement amount of the identification point in the image is analyzed through the image processing system, so that the deformation amount of the reinforced material can be obtained. And the parameters are compared with measurement parameters of a laser displacement meter above the reinforced embankment model and graduated scales pasted on the periphery of an observation window, so that the deformation characteristics of the reinforced material and the overall deformation field of the reinforced embankment model are obtained.

The invention relates to the technical field of sensor calibration, in particular to a weighing sensor calibration method based on a neural network. The method comprises the following steps: firstly, carrying out normalization processing on obtained data of a weighing sensor; secondly, initializing parameters of ELM (Extreme Learning Model) and Adam; then, an Adam algorithm is used for optimizing the weight and the threshold value from an ELM hidden layer to an output layer, and the optimized weight and the optimized threshold value are stored; and finally, inputting test set data into the trained model, and after output is obtained, carrying out anti-normalization operation on the output so as to realize the calibration work of the weighing sensor. By means of the method, the convergence performance of the optimization process can be improved, the optimization process is more stable and reliable, the precision of the calibrated weighing sensor can reach about 0.02% F.S, the weighing sensor can keep a good calibration effect under different working conditions, and the method can be suitable for calibration of sensors of different types.

The invention relates to the technical field of intelligent logistics navigation laser radars, in particular to a wheel type odometer and single-line laser radar combined calibration method, which comprises a calibration environment construction module used for constructing a good calibration environment. The method firstly focuses on the accurate calibration of the internal reference of the single-line laser radar. The step is crucial because the accurate internal reference of the laser radar is the basis of the subsequent calibration work. Through accurate internal reference calibration, the overall calibration error caused by the internal error of the laser radar can be remarkably reduced, and the precision and reliability of the whole calibration system are improved. The accuracy of vehicle navigation can be improved, and more accurate data support can be provided for subsequent intelligent logistics tasks.

A mobile black smoke vehicle electronic snapshot system calibration device disclosed by the present invention comprises a workbench, a calibration mechanism and a clamp are assembled on the workbench, the calibration mechanism and the clamp are oppositely arranged on the workbench, the calibration mechanism comprises horizontal slide rails symmetrically and fixedly installed on the workbench, the horizontal slide rails are slidably connected with vertical slide rails, and the vertical slide rails are slidably connected with the horizontal slide rails. A connecting plate is connected between the vertical sliding rails in a sliding mode, a polyhedral roller is rotationally connected to the connecting plate, magnetic attraction blocks are arranged on the four corners of each panel of the polyhedral roller along the panel, and the polyhedral roller attracts standard color cards through the magnetic attraction blocks. Through the device, the black smoke vehicle detector in a snapshot system can be calibrated quickly and conveniently, the device is convenient to move and can be carried out to measure the snapshot system which is put into work, the working efficiency is improved to a great extent, the polyhedral roller rotates, and the detection accuracy is improved. Therefore, the color cards with different chromaticity are aligned with the to-be-calibrated camera of the black smoke vehicle detector so as to verify the calibration result.

The invention relates to a weighing double-flow type cloud optimization flotation dosing control method and system, and belongs to the field of mineral separation automation. The invention comprises a weighing double-flow type automatic dosing system, a weighing double-flow type automatic dosing control method, a dosing system cloud optimization system and a dosing system cloud optimization method. The weighing double-flow type automatic dosing system comprises a control host system and a dosing control device; the weighing double-flow type automatic dosing control method comprises a weighing type dosing flow detection method and a coarse-fine double-flow electromagnetic valve type dosing control method. The dosing system cloud optimization system comprises a foam camera, an image processing host, a network connection device and a cloud server. The medicine adding system cloud optimization method comprises a cloud medicine adding system self-optimization method and a cloud artificial expert cooperative work method. According to the invention, the dosing amount can be accurately controlled, the system adapts to changes of chemicals and environment temperature, the dosing system can be automatically optimized according to flotation conditions, and the system plays a positive role in stabilizing and improving flotation process indexes.

The invention relates to the field of precision measurement and calibration, and discloses a control method for reference voltage divider calibration, which comprises the following steps: carrying out environment calibration on a current calibration environment based on correction data in a historical correction database, carrying out pre-detection on a to-be-referenced voltage divider to obtain pre-detection characteristics, and carrying out pre-detection on the to-be-referenced voltage divider according to the historical correction data. The reference voltage divider is subjected to thermal stabilization according to the current calibration environment, the reference voltage divider is calibrated after thermal stabilization is completed, the calibration module is controlled to calibrate the reference voltage divider according to data output by the reference voltage divider in the calibration process, and the reference voltage divider is calibrated after calibration is completed. Obtaining the output uncertainty of the calibrated reference voltage divider; and if the output uncertainty of the calibrated reference voltage divider is not greater than the standard output uncertainty of the reference voltage divider, the reference voltage divider is stable, and the calibration of the reference voltage divider is completed. According to the invention, through the automatic and intelligent calibration process, the calibration precision and efficiency are significantly improved.

The invention discloses a thermistor and thermocouple compatible high-precision temperature measurement method, relates to a high-precision temperature measurement method, and constructs a hardware temperature measurement circuit. The temperature measuring circuit comprises a temperature sensor, a digital-to-analog conversion chip, a digital isolation chip and a single-chip microcomputer. The temperature sensor is composed of a thermistor and a thermocouple which are connected to the two ends of the digital-to-analog conversion chip respectively. The single-chip microcomputer is responsible for taking out temperature data in the digital-to-analog conversion chip and then taking out corresponding temperature data by matching different data processing algorithms according to the types of accessed sensors, a cold junction compensation part related to the thermocouple can be realized by using an internal temperature sensor of the digital-to-analog conversion chip, and the thermocouple and the thermal resistor are adaptive to different precision and range scenes; according to the compatible temperature measurement method provided by the invention, convenience is provided for industrial scene use, the same interface can be compatible with different types of sensors, disconnection detection and power frequency suppression functions are provided, and the compatible temperature measurement method can be applied to complex industrial high-precision temperature measurement scenes, and is high in precision and strong in anti-interference capability.

The invention discloses a universal calibration method for a single-ended mode and a differential mode of a resistance-capacitance hybrid SAR-ADC, and belongs to the field of chips. The invention relates to a general calibration method for a single-ended mode and a differential mode of a resistance-capacitance hybrid SAR-ADC. The general calibration method comprises the following steps: step 1, configuring a single-ended calibration mode or a differential calibration mode; 2, outputting a digital code; step 3, obtaining an offset; step 4, configuring the SAR-ADC into a single-ended conversion mode or a differential mode; step 5, single-ended conversion mode calibration is carried out; step 6, differential mode calibration is carried out; and 7, adjusting the conversion ending mark to be the highest, and ending the conversion. According to the invention, the problem that mismatch in a single-ended mode and a differential mode of the SAR-ADC is easily caused and the calibration accuracy is influenced in the prior art is solved, and the static capacitance mismatch circuit is suitable for the static capacitance mismatch problem of the high-precision SAR-ADC, so that the requirements of various application scenes are met.

The utility model relates to the technical field of insulation board processing, especially to a high -strength insulation board anti -bending performance detection device, including frame, be provided with processing mechanism on the frame and be used for insulation board processing, processing mechanism includes: take and put subassembly, set up on the frame and be used for insulation board taking and placing, feed assembly, including the right table board of fixed right end on the top of frame, the right end inside the frame is equipped with first hydraulic cylinder, and the output of first hydraulic cylinder is fixed with base plate, and the top of four corners of base plate is all fixed with guide rod, and guide rod and right table board penetrate through sliding installation, and the top between four corners's guide rod is fixed with the supporting plate, detection component sets up on the frame and is used for insulation board bending degree detection, through the hydraulic drive four -corner guide rod realizes the steady feed of insulation board, and the cylinder controls detection component intelligent avoidance, and hydraulic loading cooperates sensor accurate measurement anti -bending performance, realizes the full -process automation from feed, taking and placing to detection, ensures the test accuracy and operation efficiency.