146results about How to "Achieve calibration" patented technology

The invention provides a multi-source information fused virtualized network fault rapid positioning method, and relates to the technical field of electric digital data processing, and the method comprises the steps: classifying and sorting historical fault events, constructing a historical dynamic evaluation model, correcting a calibration index, capturing equipment performance changes and abnormities, and enhancing the fault recognition capability. Similar faults are accurately classified and preferentially processed according to severity; in the real-time monitoring stage, real-time multi-source and abnormal data are combined, a real-time dynamic evaluation model and a correction calibration index are calculated, a ratio is applied to calculate a fine adjustment strategy, the real-time performance and accuracy of fault positioning are remarkably improved, and network dynamic changes are quickly responded. And carrying out difference analysis on the adjusted real-time model and the historical model, calibrating a preliminary fault positioning result, and improving the positioning precision and reliability.

The invention discloses a digital closed-loop self-calibration compensation circuit for a magnetic sensor, and the circuit comprises a reference magnetic field generation module which is used for generating a reference magnetic field through a metal coil, and the reference magnetic field is not affected by temperature and stress, and serves as a standard for calibrating a Hall sensitivity self-calibration loop; the Hall sensitivity self-calibration loop is used for adjusting the bias voltage of the magnetic sensor in real time according to the magnitude change of the output voltage of the reference magnetic field acting on the magnetic sensor so as to adjust the sensitivity of the magnetic sensor; and demodulating the output signal of the reference magnetic field acting on the magnetic sensor from all the output signals of the magnetic sensor through a demodulation extraction circuit. According to the invention, higher calibration precision can be realized, and temperature and stress calibration can be realized at the same time.

The utility model relates to a gas flow device for calibrating a float flowmeter. The gas flow device comprises a gas generator; a pressure control assembly; the flow regulating valve is used for regulating the flow of the gas medium; the etalon assembly at least comprises a first etalon, a first valve body connected with the first etalon and the measured float flowmeter, a second etalon and a second valve body connected with the second etalon and the measured float flowmeter, and the measuring range of the first etalon is different from that of the second etalon; the measured float flowmeter is selectively communicated with the first valve body or the second valve body; the controller, the pressure control assembly, the flow regulating valve and the standard device assembly are all connected with the controller, when the standard device with at least two measuring ranges is arranged in different flow ranges, the standard device with the measuring ranges does not need to be independently connected again, only the controller needs to control opening and closing of a valve body of the corresponding standard device, shutdown installation is not needed, operation is easy, and the cost is low. The structure is simple, operation is convenient, automation is high, and meanwhile work efficiency can be improved.

The invention discloses a teaching auxiliary device for a female pelvic floor organ prolapse repair operation, and belongs to the technical field of female pelvic floor repair teaching aids. The pelvic floor teaching device comprises a pelvic floor simulation mold, pelvic floor teaching gloves and an auxiliary display system, wherein audible and visual alarms and contact sensors are arranged at the positions of organs in the pelvic floor simulation mold. The pelvic floor teaching glove solves the problems that an existing green hand is difficult to practice an operation and resources of a corpse dissecting teaching aid are tight, the pelvic floor teaching glove is inserted into the pelvic floor simulation mold through the vagina by wearing the pelvic floor teaching glove, the probe at the front end and the contact type sensor are used for sensing each other, and if the pelvic floor teaching glove mistakenly enters an organ which is not required to be examined, the audible and visual alarm gives an alarm; various simulation teaching scenes are set, the image is blurred through the image blurring module to simulate the serious bleeding phenomenon, an operator observes the actual condition of a simulation operation through the display terminal, it is ensured that the teaching auxiliary device has the visualization, guiding and feedback functions, and the defects that a green hand is difficult to learn and simulation tools are tight are overcome.

The invention provides an intracranial pressure sensor data processing system and algorithm based on an improved wavelet neural network. The system comprises a parameter initialization module; a pre-training module; the parameter generation module is used for generating different parameter sets through improved Tent mapping; a model adjustment module; a training module; an output module; an embedded system module; the data input module takes pressure data acquired by the intracranial pressure sensor as training data and inputs the training data into the embedded system, so that a wavelet neural network structure of the data input module can reach a prediction target and is kept in the system; and the on-line measurement module is used for carrying out on-line measurement in the operation or after the operation, collecting intracranial pressure data in real time and inputting the intracranial pressure data into the system so as to obtain accurate intracranial pressure data. The influence of temperature drift on the sensor is reduced by using the improved wavelet neural network algorithm, so that the sensor has good performance when processing nonlinear and non-stationary signals, and the intracranial pressure monitoring data can reflect the actual intracranial pressure of a patient more accurately.

The invention provides a device model updating method and device, electronic equipment and a storage medium, and the method comprises the steps: carrying out the simulation of a device required by a to-be-processed process node through electronic design automation simulation software, constructing a device simplified model based on the model simulation parameters of the device extracted in the simulation process, and carrying out the simulation of a device model. Generating a corresponding standard unit circuit according to the device simplification model; in electronic design automation simulation software, a simulation test circuit comprising a standard unit circuit is built by using a simulation circuit simulator, and netlist simulation is carried out on the simulation test circuit; calculating a difference value between the netlist simulation result and an actual circuit test result of the device, and adjusting model simulation parameters according to the difference value; and generating an updated device model of the device by using the adjusted model simulation parameters.

The invention discloses a digital jet printing machine nozzle automatic detection method based on machine vision, and the method comprises the steps: collecting a spray needle image of a nozzle, obtaining a minimum enclosing rectangle containing the contour information of a spray needle, recording the position of a needle tip, and dividing a liquid leakage detection region and an ink jet detection region; a plurality of jet needle ink jet state diagrams are collected, the number of pixels with specified pixel values in the liquid leakage detection area and the ink jet detection area is calculated, and whether ink jet abnormity exists or not is analyzed; performing superposition processing on the plurality of jet needle ink-jet state diagrams, and performing pixel-by-pixel subtraction on the processed image and the jet needle image to obtain a jet needle ink-jet effect diagram; according to the ink jet effect picture of the jet needle, the ink jet angle is measured, and whether the ink jet angle is abnormal or not is judged. The invention further discloses a digital jet printing machine nozzle automatic detection device based on machine vision. According to the invention, by adopting a related method of machine vision, the automatic ink-jet quality detection and calibration of the digital jet printing machine nozzle are realized, and the labor cost is greatly reduced while the detection accuracy is effectively improved.

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 discloses a precision calibration method for a traceable blade tip timing blade vibration measurement system, and relates to the field of non-contact blade tip timing vibration measurement, and the method comprises the steps: determining a blade vibration signal parameter; acquiring a timing pulse signal based on the blade vibration signal parameter; performing pulse width modulation according to the blade tip timing pulse signal to obtain a vibration frequency truth value and a vibration amplitude truth value; inputting the timing pulse signal into a blade vibration measurement system to calculate a vibration frequency indicating value and a vibration amplitude indicating value; and comparing the vibration frequency truth value and the vibration amplitude truth value with the vibration frequency indicating value and the vibration amplitude indicating value respectively to obtain a measurement precision index. The device can be traced to national and international measurement standards, high-precision blade vibration signals can be controlled to be generated, the amplitude precision is 1 micron, the amplitude range is 0-100 mm, the frequency range is 0-10 kHz, and therefore the calibration index requirement of a blade vibration measurement system within the full parameter range is met, and the application range is wide.

The utility model discloses a special tool clamp device for a full-automatic metal Charpy impact sample, which relates to the technical field of material detection, and is characterized in that when the special tool clamp device is used, the sample is placed on the upper surface of a sliding seat and is attached to the surfaces of two bosses of a countermeasure seat, and when a pendulum bob impacts, the sample is broken, so that the sample is not damaged. The residual kinetic energy of the pendulum bob impacts the surface of the buffer pad, meanwhile, the force unloading seat slides in the groove, the force unloading seat presses the first piston through the jacking column, the first piston presses liquid in the piston cylinder into the secondary energy absorption chamber through the bent pipe, and the second piston is driven to press the spring, so that the spring greatly buffers the instant impact force, and the impact force is reduced. Meanwhile, the hydraulic cylinder slides on one side of the frame plate during impact, so that the length of the tension spring pulled by the hydraulic cylinder is changed, kinetic energy of the pendulum bob can be absorbed, direct hard contact is avoided, large impact force can be absorbed and buffered through the structure, meanwhile, it can be guaranteed that the whole is not affected by impact, and good sample positioning precision is guaranteed.

The embodiment of the invention discloses a chip calibration method and device, a storage medium and electronic equipment, relates to the technical field of communication, and aims to solve the problem of performance reduction caused by time interleaving errors of a chip of a time interleaving architecture in the prior art. According to the method, firstly, the error calculation of the whole link is carried out by directly collecting the digital result output by the ADC, then optimization iteration is carried out in the simulation domain according to the calculated time interleaving error, the numerical value of the corresponding sub-ADC channel register is adjusted, the register is updated in a register control code mode, and the time interleaving error of the whole link is calculated. The offset error, the gain error and the clock offset between the sub-ADC channels are corrected, and finally the chip is calibrated, so that the performance of the chip is improved.

The invention relates to the technical field of eutectic equipment, in particular to an elastic suction nozzle assembly, eutectic equipment and an eutectic method. The elastic suction nozzle assembly comprises a base, at least two suction nozzles arranged on the base and elastic assemblies arranged corresponding to the suction nozzles. The suction nozzle comprises a connecting section and a working section which are connected; two ends of the elastic component are connected with the base and the connecting section of the corresponding suction nozzle; the base is provided with a through avoiding channel, the working section is movably located in the avoiding channel, and the working section penetrates through the avoiding channel from one side of the base and is exposed out of the other side of the base. The working section is provided with a vacuum air path and a perspective window arranged corresponding to the vacuum air path; external light can pass through the perspective window and the vacuum air path in sequence and then penetrate out of the adsorption opening of the suction nozzle. According to the scheme, multiple chips can be mounted and elastically abutted at the same time, the positions of the chips are allowed to be obtained in the mounting process, so that the chips are adjusted in real time, and efficient mounting and real-time calibration capacity of the multiple chips are achieved.

The invention relates to the technical field of display adjustment, in particular to a display end dynamic adjustment system and method based on user behaviors, and in the system, a picture adaptation adjustment module is used for adjusting the display end dynamic adjustment based on the interaction position of each picture in a to-be-displayed spliced picture set and the difference between an interaction association picture set and the to-be-displayed spliced picture set. Analyzing a display position adaptation adjustment coefficient; and calibrating the picture adaptation degree of each picture splicing scheme based on the display position adaptation adjustment coefficient. In the process of managing the pictures of the display end, the position information and behavior information of the user are combined to lock the viewing angle of the user, and different picture splicing schemes are dynamically generated in combination with historical viewing data; meanwhile, the difference between the picture interaction position in the picture to be displayed and the interaction association picture set and the spliced picture set to be displayed is also considered, analysis and calibration of the adaptation degree of each picture splicing scheme are achieved, and the purpose of dynamically adjusting the spliced picture to be displayed at the display end is achieved.

The utility model discloses a track saw cutting angle calibrating and adjusting device, and relates to the technical field of cutting devices. According to the technical scheme, a penetrating vertical groove is formed in an original front angle scale, an adjusting piece is inserted into the penetrating vertical groove, one side of the adjusting piece is in lap joint with the machine head assembly, a butt joint block is arranged on the machine head assembly, the machine head assembly rotates to a certain angle, the butt joint block is attached to the adjusting piece, and the adjusting piece, the butt joint block and other related structures are arranged on the front angle scale. The multi-functional adjusting device is simple in structure and convenient to operate. In addition, compared with an existing mode of achieving multiple functions through multiple mechanisms, the effect of reducing the machining cost and the material cost is achieved by arranging one adjusting piece.

The invention relates to the technical field of cable circulation current monitoring, in particular to a time-sharing self-powered cable circulation current monitoring device, which comprises a CT (Current Transformer) energy taking module comprising a current transformer and a rectifying circuit; the energy storage module comprises an energy storage capacitor and a charging comparator; the current signal processing module is used for dividing the voltage of the output end of the rectifying circuit and weakening the error amount of the pulsating direct current signal by outputting a first current value and a second current value; a 4G module; and the main controller is used for determining the current measurement value of the cable, adjusting the current monitoring frequency of the current transformer according to the fluctuation value of the current measurement value, and determining whether to adjust the transmission power of the current measurement value transmitted from the 4G module to the background or adjust the amplification gain of the pulsating direct current signal according to the number of abrupt change points in the current change image. According to the invention, the monitoring precision and the monitoring range are increased.

The utility model discloses a large deformation extensometer calibration device, and specifically relates to the calibration device field, the large deformation extensometer calibration device comprises a main body, one end of the main body is provided with a protection cover, the top of the main body is fixedly provided with a servo motor, the main body is internally provided with a screw rod, and the output end of the servo motor is connected with the screw rod; the lead screw is sleeved with a nut sleeve matched with the lead screw, a base is arranged at the bottom of the body, and magnetic V-shaped bases are installed at the two ends of the two sides of the base. According to the utility model, the magnetostrictive displacement sensor and the magnetic ring are arranged, and the output of the magnetostrictive displacement sensor is relative to the position of a fixed reference point, so that the magnetostrictive displacement sensor does not need to be reset when power supply is recovered after power failure, and does not need to re-find a reference point (such as an incremental encoder and an incremental grating ruler) like a common incremental sensor; the non-contact magnetic induction technology measuring device is adopted, mechanical abrasion and mechanical vibration do not exist in non-contact measurement, the reliability of the sensor is improved, and the service life of the sensor is prolonged.

The utility model relates to the technical field of lamp test benches, in particular to a light source three-axis adjustable and target plate angle adjustable lamp test bench which comprises a mounting rack, a flat shaft, a longitudinal shaft, a transverse shaft and an optical detection mechanism, the flat shaft is arranged on the mounting rack, the longitudinal shaft is slidably arranged on the flat shaft, the transverse shaft is slidably arranged on the longitudinal shaft, and the optical detection mechanism is arranged on the mounting rack. A fixing support is slidably arranged on the transverse shaft and used for installing a test lamp, and the optical detection mechanism is used for adjusting the lamp irradiation angle and testing irradiation area parameters. The light source three-axis adjustable and target plate angle adjustable lamp test bench comprises a driving assembly for driving the longitudinal shaft, the transverse shaft and the fixed support to slide. The device has the effect of being capable of testing the interior lamps of different vehicle types.

The application relates to a navigation tool calibration method, device and storage medium for surgical navigation, and relates to the technical field of medical treatment. The method comprises the following steps: acquiring a first image, the first image being obtained by image acquisition equipment when the vertex of a navigation rod is in contact with a target positioning point on a second tracking tool; acquiring a first transformation matrix and a second transformation matrix based on the first image, the coordinates of at least three first positioning points in a first coordinate system and the coordinates of at least three second positioning points in a second coordinate system; and acquiring target coordinates of the vertex of the navigation rod in the first coordinate system based on the first transformation matrix, the second transformation matrix and the coordinates of the target positioning point in the second coordinate system. In the calibration process, an axis rotation process in the related art is avoided by introducing a tracking tool, the calibration effect of the navigation tool is improved, and the calibration efficiency is improved.

The invention discloses a teaching solid-liquid contact angle software and hardware measurement system based on a seating drop method, and the system comprises a hardware device and a software interaction and algorithm, the device can achieve the manual rotation of an XY plane and a YZ plane and the manual translation of an X axis and a Z axis, and the software interaction and algorithm comprises the steps: S1, enabling a plane where a camera is located to be perpendicular to a plane where a liquid drop is located, and carrying out the photographing to obtain a liquid drop picture; s2, carrying out graying processing on the liquid drop picture; s3, performing multi-stage interactive cutting on the grayed picture; s4, a Canny edge detection algorithm or a thresholding method is adopted, the contour extraction of the cut picture is completed through shading, iterative optimization is carried out, and liquid drop contour data are output; s5, drawing a liquid drop contour line on the grayscale image, drawing a base line, and calculating to obtain contact angle data; software provided by the invention is point-and-play, and the software can be matched and cooperated with designed hardware to complete a contact angle data acquisition function, and can also be independently used to process a liquid drop picture to obtain a contact angle numerical value.

The invention discloses a rotary motor control system and application thereof, the rotary motor control system comprises a sonar calibration device, a rotary motor device, a rotary motor transmission device and a rotary motor cable collection device, the first end of the rotary motor transmission device is used for connecting a pitching motor control system; the second end of the rotary motor transmission device is connected with the first end of the rotary motor device; the second end of the rotary motor device is connected with the first end of the sonar calibration device, and the rotary motor cable collection device is arranged in each device shell. The two bearings are additionally arranged at the two ends of the second step of the rotary cylinder connecting piece respectively and used for reducing rotary resistance, so that rotary motion is more sensitive, and the control precision of a rotary system is improved. A pressure balance air bag is additionally arranged behind the high-precision rotary motor to directly balance internal and external pressure, so that the rotary motor control system can stably work for a long time in a high-pressure environment.

The utility model provides a confocal microscopic Raman spectrometer wave number correction device, and belongs to the technical field of Raman spectrum detection. The correction device comprises a laser used for emitting laser; the lens assembly comprises a plurality of lenses, and the lens assembly is used for collimating and focusing the laser; the reflector assembly comprises a plurality of reflectors, the plurality of lenses and the plurality of reflectors are alternately arranged, and the reflector assembly is used for adjusting the light path direction of the laser; the attenuation sheet is arranged on a reflection light path in the reflector assembly and is used for attenuating the energy of the laser; the slit is arranged at a confocal position in the lens assembly, and the slit is used for screening Rayleigh scattering light in the attenuated laser; wherein the reflector assembly reflects the Rayleigh scattering light to the rotating grating assembly in the spectrometer. The correction device realizes a convenient and fast calibration process, and improves the calibration precision.

The utility model provides a kind of transverse loading device for steel structure welding test, including push cylinder, fixed plate, vertical board, push plate, two guide structures, two loading mechanisms and two self-adapting adjusting mechanisms;Push cylinder is set on fixed plate, vertical board is set in the end of fixed plate, the push rod of push cylinder is through vertical board, and the middle part of the inner side end surface of push plate is connected with the push rod of push cylinder;Push plate is slidably matched with vertical board by two guide structures.The transverse loading device for steel structure welding test of the utility model solves the problem that the loading head of the loading device in the related art and the friction coefficient of sample contact surface are unstable, resulting in local shear force interference transverse tensile result.

The application discloses a panel laminating device for electronic display screen production and relates to the technical field of display screen lamination.The panel laminating device comprises a base, a vacuum laminating machine is fixedly installed at the top of the base, a pneumatic cylinder driving device is arranged in the vacuum laminating machine, a laminating pressing plate is fixedly installed at the output end of the pneumatic cylinder driving device, a linear driving module is fixedly installed at the top of the base, and a carrying sliding table is fixedly installed at the moving end of the linear driving module.The panel laminating device can complete the distance calibration and positioning of four groups of display screen panels at one time through the right-angle positioning function of the cross-shaped baffle, can adapt to the synchronous lamination operation demand of multiple groups of display screen panels, and can shorten the time consumption of single-batch positioning.

The invention discloses a laser vibration meter series reciprocating type optical frequency modulation calibration device and a traceability method, and belongs to the field of photoelectric measurement. The calibration device comprises 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, a first plane mirror, a second plane mirror, a lambda / 4 wave plate, a first polarizing beam splitter, a second polarizing beam splitter, a third polarizing beam splitter, a photoelectric detector, a data acquisition system and a lambda / 2 wave plate. The reversibility characteristic of an optical path is utilized, a linear measuring optical path structure is used, output frequency translation and modulation control of the laser vibration meter are achieved in a secondary optical frequency modulation mode of the same set of optical devices in combination with secondary optical frequency translation, and modulated laser is completely returned to the laser vibration meter in an original path. The effect of the laser Doppler effect of vibration is simulated, a calibration value of the vibration speed is obtained based on a Doppler frequency shift formula, and the calibration value is traced to the time frequency quantity of a data acquisition system.

The application relates to an active band-pass filter Q value calibration circuit, which comprises an LDO circuit, a calibration signal filter circuit and a Q value calibration detection circuit; wherein the output ends V1 and V2 of the LDO circuit supply power to the calibration signal filter circuit, the output end VREF of the LDO circuit provides a reference voltage for the Q value calibration detection circuit, the output end signals VBP and VBN of the calibration signal filter circuit serve as inputs of the Q value calibration detection circuit, and the output signal VRZ of the Q value calibration detection circuit is outputted <n:0>The control signal is used as a calibration signal to filter circuit. The application can effectively tune the Q value of the filter and improve the consistency of the chip. Compared with the traditional active band-pass filter Q value calibration circuit, the application has the characteristics of small implementation difficulty and high integration.< / n:0>

The embodiment of the invention relates to a goods channel opening positioning method of a goods distribution cabinet, the goods distribution cabinet and a storage medium, the goods distribution cabinet comprises a first goods channel and a goods taking platform, the first goods channel is used for storing goods to be taken out, and a goods taking identifier is arranged at a preset position of a goods channel opening of the first goods channel; the goods taking platform is used for taking out the goods stored in the first goods channel from the goods channel opening. The method comprises the steps that the first position of the goods channel opening is determined; the object taking platform is controlled to move towards the first position; determining a first actual position of the moved object taking platform on the object taking plane and an object taking position indicated by the object taking identifier sensed by the moved object taking platform; and based on the first actual position and the object taking position, a second actual position of the cargo channel opening on the object taking plane is determined. Therefore, the positioning efficiency of the cargo channel opening can be improved.

The utility model relates to the technical field of cranes, and discloses a calibration assembly tool for a telescopic boom body of a reach stacker. The telescopic arm body comprises a top plate, a bottom plate and two side plates connected with the top plate and the bottom plate. The alignment mechanism is fixedly arranged on the tool platform, and the alignment mechanism comprises two groups of adsorption devices which are oppositely arranged and are respectively used for adsorbing the two side plates; and the detection mechanism is connected with the adsorption device and is used for determining the relative distance to the left side plate and the right side plate. The calibration assembly tool can improve the production efficiency.

This invention discloses an apparatus and method for ultra-high vacuum calibration using the reflux method, belonging to the technical field of vacuum calibration devices. It includes a gas source, a ball valve, a pressure stabilizing chamber, a gas micro-flowmeter, a bellows stop valve, calibration chamber one, calibration chamber two, a dry pump, a stop valve, a solenoid valve, a pumping unit, a flow-limiting element two, a full-range vacuum gauge, an ultra-high vacuum ionization vacuum gauge, and the vacuum gauge under test. The gas source is connected to the pressure stabilizing chamber via the ball valve. The pressure stabilizing chamber is connected to calibration chamber one via the gas micro-flowmeter and the bellows stop valve. Calibration chamber one is connected to calibration chamber two. The dry pump is connected to the pressure stabilizing chamber via the stop valve. The dry pump is connected to the pumping unit via the solenoid valve. The pumping unit is connected to calibration chamber one via the flow-limiting element two. The full-range vacuum gauge is connected to calibration chamber one. One end of calibration chamber two is connected to the ultra-high vacuum ionization vacuum gauge, and the other end of calibration chamber two is connected to the vacuum gauge under test. This invention has a simple structure and high calibration accuracy.

The invention discloses a gear position self-learning method, system and equipment of a gear shifting mechanism and a medium, and relates to the technical field of computers.The gear shifting mechanism comprises a reduction gear, a threaded lead screw, a gear shifting fork and a dog-tooth clutch, the reduction gear drives the gear shifting fork through the threaded lead screw to achieve combination and separation of the dog-tooth clutch so as to conduct gear shifting, the method comprises the steps that under the condition that gear position information of a gear shifting mechanism is abnormal, whether the driving state of a target vehicle meets a preset self-learning condition or not is determined; if the self-learning condition is met, the current position of the threaded lead screw is obtained; locked-rotor detection is carried out on the gear shifting mechanism from the current position of the threaded screw rod, and the actual total stroke of the threaded screw rod in the locked-rotor detection process is obtained; if the stroke deviation between the actual total stroke and the preset theoretical total stroke is smaller than or equal to the preset error threshold value, the position information of the actual top dead center and the actual bottom dead center serves as the updated gear position to be stored.

The invention relates to the technical field of fluorescence temperature measurement, and discloses a calibration system and a calibration method for a fluorescence temperature measurement demodulator, which are used for generating an optical signal for simulating a fluorescence signal in a manner that the intensity of the emitted optical signal changes according to a specified function so as to replace an optical signal returned by a sensor. Therefore, a photoelectric diode of the demodulator receives a photoelectric signal of which the intensity changes according to a function and converts the photoelectric signal into an electric signal, and after the demodulator analyzes the electric signal, the demodulator corrects a direct error between a restored parameter and a standard parameter sent by the calibration device and takes the direct error as a deviation correction value. Therefore, the channel error of the demodulator is corrected by using the standard optical signal so as to calibrate the demodulator.