346results about How to "Avoid measurement errors" patented technology

The invention discloses a BEV-based accurate calculation method for a road disease area ratio, and the method comprises the steps: configuring a vehicle-mounted data collection system, and carrying out the marking and preprocessing of data; constructing a BEV-based disease detection network and training the BEV-based disease detection network; a BEV-based disease detection network is used for generating disease detection results, the results are spliced in a fixed calculation unit, and the disease area ratio is calculated, the top view of the whole road is reconstructed, so that seamless fusion of multi-view information is realized, the problem of dislocation possibly caused by a traditional splicing technology is effectively solved, and the method is suitable for large-scale popularization and application. According to the method, the comprehensiveness and the accuracy of area measurement are ensured, measurement errors caused by view angle differences and repeated calculation of overlapped area disease areas are avoided, the accuracy and the integrity of disease area statistics are ensured, high geometric consistency and accurate representation of disease areas can be kept even under the conditions of complex road conditions and changeable environments, and the method is suitable for large-scale popularization and application. And the efficiency and the credibility of road condition evaluation are greatly improved.

The invention relates to the technical field of fermentation, in particular to a dough fermentation temperature control device which comprises a fermentation box, a heating device, a cooling device, a rotating shaft, a dough bearing disc and a dough elasticity detection device. Judging whether the initial heating power of the heating device needs to be adjusted according to the fermentation temperature rise slope comparison result to obtain second heating power; according to the fermentation temperature comparison result, whether a cooling device is started or the current fermentation dough temperature is detected or the fermentation dough continues to be heated with second heating power is judged; judging whether the volume of the fermented dough needs to be detected or not according to the fermentation temperature comparison result; and adjusting the second heating power according to the volume growth curve comparison result to obtain second constant heating power. By measuring the temperature, the volume and the elasticity of the dough, the fermentation temperature in the fermentation process is adjusted, so that the dough fermentation accuracy is ensured.

The invention discloses a box-type substation monitoring data processing method and system, and relates to the technical field of monitoring data processing, and the method comprises the steps: determining the type of monitoring data, constructing a monitoring data set and an abnormal fault set, and determining the correlation between the monitoring data set and the abnormal fault set; the method comprises the following steps: calculating a correlation index between monitoring data and an abnormal type, and a weight of each associated monitoring data in the abnormal type; a periodic monitoring strategy is adopted, data changes are captured in real time, abnormal values are screened out, and data fluctuation interference is eliminated through analysis; aiming at the quantity of initial monitoring data, adjusting and executing an anomaly detection strategy: comprehensively considering all anomaly types associated with the data when the data is single, and predicting a future anomaly risk by utilizing buffer time; when multiple data exist, completely matched anomaly judgment is preferentially carried out, and then whether anomaly judgment of single data needs to be carried out or not is judged; comprehensive and real-time monitoring and efficient abnormity early warning of the operation state of the box-type substation are realized, and the safe and stable operation capability of the substation is improved.

The invention discloses an in-vitro diagnosis liquid level detection method based on a 60GHz on-chip antenna millimeter wave radar, and relates to the technical field of liquid level detection in the IVD field, and the method comprises the steps: receiving a reflection signal through a sensor, and carrying out the preprocessing; extracting liquid level position data from the reflected signal through a machine learning algorithm; a temperature compensation and calibration mechanism is used for monitoring the temperature in real time and compensating and calibrating a measurement result; a friendly user interface is constructed and developed to feed back the system operation state in real time. The device can be accurate to a micron level, can accurately detect the liquid level height change in a micro cup or a reagent bottle, provides an extremely accurate reference for reagent addition, is greatly enhanced in reliability, is not influenced by factors such as liquid color, transparency, container material and shape, and can be used in a complex and changeable laboratory environment. The device can work stably and accurately under the conditions of temperature, humidity, electromagnetic interference and the like, and effectively avoids measurement errors caused by interference of external factors.

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 coal seam gas content determination method. The method comprises the following steps: collecting a coal sample and placing the coal sample in a coal sample closed desorption container for closed normal-pressure desorption; opening the corresponding branches based on the change of the gas flow; working condition flow data and corrected gas flow data in the standard state are determined based on the laminar flow sensors on the branches and measurement data of the environment temperature sensor and the environment pressure sensor, and then the loss amount is calculated; the coal sample crushing device crushes the coal sample, and the corresponding branch is opened again based on the change of the gas flow until the desorption work is stopped; based on measurement data of each sensor, the coal sample mass is calculated to finally determine the coal seam gas content. The parameters such as the temperature, the pressure and the pressure difference of fluid flowing through the laminar flow sensor are measured in real time, the flow in a standard state is obtained after calculation and correction, and the measured gas flow and volume data are more scientific and accurate through temperature and pressure compensation.

The invention discloses a photoacoustic cell resonance characteristic measurement classification method based on frequency sweep modulation, and relates to the technical field of photoacoustic cells, and the method comprises the following steps: collecting photoacoustic signal data, and transmitting the data to a data management center, the photoacoustic signal data comprising historical data and real-time data, the collected photoacoustic signal data is preprocessed and analyzed, resonance characteristic interference factors are extracted, the resonance characteristic interference factors comprise a temperature interference factor, a humidity interference factor and an electromagnetic interference factor, and the change curve of the resonance amplitude and the resonance frequency of the photoacoustic cell is analyzed. By measuring and calibrating the temperature in real time, the resonance characteristics of the photoacoustic cell at different temperatures can be accurately reflected, so that the accuracy and stability of measurement are improved, the photoacoustic spectrum system can stably operate under wider environmental conditions, and the reliability and durability of the photoacoustic spectrum system in practical application are improved.

The invention discloses a terahertz thickness measuring method and device based on a lithium ion electrode multi-coating, and relates to the technical field of terahertz, the thickness measuring device comprises a transmitting probe, a receiving probe and an arc-shaped slide rail, and the transmitting probe and the receiving probe are arranged on the arc-shaped slide rail. According to the terahertz thickness measuring method and device based on the multiple coatings of the lithium ion electrode, a reflective terahertz time-domain spectrum detection system is utilized, the junction of a sample to be measured is measured at the same time, and echo signals generated when terahertz waves penetrate through air, penetrate through a detected coating and are reflected by the surface of the coating are measured at the same time; the refractive index of the lithium ion electrode coating and the refractive index of the material can be calculated as a reference signal of the terahertz time-domain spectroscopy, the material thickness and the refractive index can be measured at the same time without knowing the refractive index of the material and establishing a complex thickness measurement algorithm, and the detection method is simple and easy to implement. Measurement errors caused by position inconsistency when echo signals are extracted through multiple times of measurement are avoided.

The invention provides an integrated light quantum mixed-phase flow meter and a mixed-phase fluid measurement method, relates to the technical field of industrial mixed-phase fluid measurement, and aims to solve the problem that an existing underwater flow meter is poor in measurement accuracy of a mixed-phase fluid medium in a deep-sea oil and gas well. The integrated light quantum mixed-phase flow meter comprises a flow meter body, a fluid metering channel penetrates through the center of the flow meter body, and the integrated light quantum mixed-phase flow meter is applied to a deep-sea oil-gas well. The flowmeter main body is a sealed cylinder, and two groups of electric connectors are arranged at the top of the flowmeter main body; the fluid metering channel comprises an inlet pipe section and a middle measuring pipe section, and the middle measuring pipe section is provided with an inner throttling body of a spindle structure; a plurality of sets of measuring systems are integrated on the flowmeter main body, and each set of measuring system is arranged between the fluid metering channel and a shell of the flowmeter main body and is used for measuring the flow of each phase medium in the mixed-phase fluid flowing through the inner-section fluid; a sealing partition plate is arranged on the side, away from the fluid metering channel, of each measuring system and used for isolating seawater.

The invention discloses a metering detection device, and belongs to the technical field of metering devices, the metering detection device comprises a vernier caliper, one side of the vernier caliper is fixedly connected with a mounting head, the mounting head is provided with a storage seat, the storage seat is internally and rotatably connected with a rotating frame, and the rotating frame is internally and rotatably connected with an adjusting structure. The two sides of the adjusting structure are rotationally connected with adjusting bases, one sides of the adjusting bases are provided with movable bases in a sliding fit mode, the movable bases are provided with movable bases in a sliding fit mode, the movable bases are fixedly connected with transmission mechanisms, and one sides of the movable bases are provided with cleaning brush rollers. The surface and the inner wall of a measured object are polished and cleaned by utilizing the cleaning brush roller which rotates and reciprocates, and the surface and the inner wall of the measured object are thoroughly cleaned, so that the vernier caliper can be ensured to be in good contact with the surface of the object during measurement, the influence of dirt or oil stain on the measurement precision is avoided, errors caused by uneven surface or attachments are avoided, and the measurement accuracy is improved. Therefore, the measurement precision and efficiency are improved.

The invention relates to the technical field of oscillators, and provides an H-type temperature compensation type quartz crystal oscillator which comprises a placing frame and further comprises a dismounting device, a placing groove is formed in the top of the placing frame, a placing rod penetrates through the top of the placing frame in a sliding mode, and a placing plate is fixedly installed at the top of the placing frame. An oscillator body is fixedly installed at the top of the containing frame, a sealing frame is arranged on the inner wall of the containing groove, the dismounting device comprises a U-shaped frame, a limiting rod, a limiting spring, a first limiting groove, a second limiting groove, a protection plate, a protection rod and a protection spring, and after limiting of the limiting rod is relieved, the limiting rod is manually pulled to move in the direction away from the oscillator body; the limiting rod moves in the direction away from the oscillator body to be separated from the sealing hole and release limiting of the sealing frame, accidental disassembly is prevented through the protection rod, the possibility of faults of the oscillator body can be reduced, and therefore the integrity of the sealing frame is kept.

The invention discloses a device and a method for measuring the flow direction and the flow velocity in a hole, and belongs to the technical field of water conservancy, hydrogeology and engineering geology. According to the measuring device, a plurality of conductivity probes are arranged on the lower edge of an upper tank base, and an electronic compass is arranged in each conductivity probe and used for measuring the flow direction of underground water in a hole; the bottom of the upper tank body is connected with the lower tank body, and a certain distance is reserved between the upper tank body and the lower tank body; the lower tank top cover is provided with a nozzle, and the lower tank base is provided with a water inlet hole. The technical problems that in the prior art, the flow direction and the flow speed of underground water in a micro-scale range in a single drill hole cannot be measured, and vertical turbulent flow interference of the underground water cannot be avoided in the measuring process are solved.

The invention discloses a device for measuring the outer diameter of a motor rotor, and belongs to the technical field of motor rotor detection. A motor rotor outer diameter measuring device comprises a stand column and a base, a clamping assembly is arranged on the base, a lifting table slides on the stand column, a rotating table is arranged at the bottom of the lifting table, a supporting rod is connected to the side face of the rotating table, an annular guide rail a and an annular guide rail b are sequentially connected to the supporting rod in the longitudinal direction, and two outer diameter detecting parts are connected to the annular guide rail a and the annular guide rail b correspondingly. A positioning ring is connected between the two groups of outer diameter detection parts, the symmetrically distributed outer diameter detection parts are arranged on the annular guide rail, and the symmetrical state is ensured by using the positioning ring, so that synchronous measurement of four different point positions at one time is realized, dynamic measurement is allowed by the design of a rotating structure, and the roundness deviation of the rotor is evaluated more comprehensively. And the outer diameter detection part is provided with a detection head, a guide rod and a second sleeve, so that the detection guide precision is provided.

The present invention discloses a water-coal slurry fluidity detector, which specifically relates to the field of water-coal slurry detection technology, including a base, a diversion detection component is arranged on the base, the diversion detection component includes a support arranged on the base, a cover plate is arranged on the top of the support, and a first delivery pipe is arranged on one side of the cover plate. The present invention realizes the function of gathering the fluid water-coal slurry by delivering the water-coal slurry to the top of the sealing disk and the diversion cavity through the second impeller. As the fluid water-coal slurry in the diversion cavity gradually increases, the fluid water-coal slurry can be diverted and transported through each diversion detection tube. The flow meter in the diversion detection tube first detects the flow of the water-coal slurry transported by the diversion detection tube, and the speed of the second impeller during rotation is fixed, and then the pressure during the extraction and transportation of the water-coal slurry is also fixed, so as to avoid the pressure difference and cause inaccurate detection.

The invention discloses a machine tool cutter space pose on-machine measurement device and a measurement method thereof, and the device comprises a calibration module which is installed at one side of a cutter handle of a cutter; a frequency-modulated continuous wave laser interference system and a galvanometer are installed on a vibration isolation workbench of the machine tool, light beams emitted by the frequency-modulated continuous wave laser interference system achieve conversion of a set angle through the galvanometer so as to cover the calibration module, and a space positioning algorithm is adopted to fit the plane where the target ball is located. And obtaining a deviation value between the mass center and the normal vector in two measurement results before and after machining, and taking the deviation value as the tool space pose error before and after machining of the machine tool, so that rapid and high-precision direct measurement of the tool space pose error is realized. The method has the advantages of being large in measurement range, high in measurement precision, simple in structure and low in cost, and the defect that in an existing method, the position and pose errors of the tool are indirectly calculated through an error model is overcome.

The invention discloses a matrix type temperature detection system and method based on temperature-sensitive diodes, the problems of complex wiring and large temperature drift of a traditional multi-node temperature measurement system are solved through M * N matrix layout, row and column time-sharing gating and constant current driving technologies, the system adopts an independent column constant current source to ensure the measurement consistency, and a high-precision ADC and a dynamic calibration algorithm are combined, so that the measurement accuracy is improved. And the precision of + / -0.2 DEG C is realized within the range of 50-150 DEG C. The method is particularly suitable for high-density temperature measurement scenes such as battery thermal management, electronic equipment overheating monitoring and the like.

The invention discloses a clutch assembly detection device and a detection method, which specifically relate to the technical field of detection equipment, including an equipment main body, the equipment main body including a fixed seat and a display screen, a torque measuring part, a distance measuring part and a pressure measuring part, the torque measuring part including a torque sensor, a coupling is fixedly connected to the torque sensor, a rotating shaft is fixedly connected to the fixed seat, the distance measuring part includes an annular plate, a plurality of connecting rods are arranged in the annular plate, the distance measuring part includes a pushing frame, a baffle is arranged on the pushing frame, a support plate is arranged on the right side of the annular plate, a laser rangefinder is arranged at the left end of the support plate, the pressure measuring part includes a release bearing, and a pressure sensor is arranged at the left end of the release bearing. The invention can directly measure the free stroke and release stroke data of the clutch assembly, simplify the measurement method, improve the detection accuracy and detection efficiency, and can measure the output torque of the motor under different loads according to the displacement data change.

The invention provides a size detection device for glass production and manufacturing, and relates to the technical field of glass size detection. The size detection device for glass production and manufacturing comprises a working table, an adjusting mechanism is arranged in the working table, four positioning plates distributed in a square shape are arranged on the upper surface of the working table, the four positioning plates are concentric with the working table, the adjusting mechanism drives the four positioning plates to synchronously move towards or deviate from the central point, and the adjusting mechanism is arranged on the upper surface of the working table. The side walls of the two oppositely-distributed positioning plates are fixedly connected with a connecting plate, the outer side of the connecting plate is connected with a scale plate, the device further comprises a top plate and a moving mechanism which are located above the workbench, and the left side of the lower surface of the top plate is slidably connected with a downward laser range finder through the moving mechanism. And a detection mechanism is arranged in the middle of the top plate and drives to-be-detected glass to perform rotary detection. Through the adjusting mechanism and the positioning plate, the center point of the glass can be conveniently and accurately found, and then rapid measurement is achieved.

The invention provides a wafer testing method and system and a testing machine, belongs to the technical field of semiconductors, and can improve the accuracy and efficiency of wafer testing. The method comprises the steps that a test machine receives a calibration starting signal from a test board, the calibration starting signal is used for indicating that a wafer is placed at a designated position, and the designated position is a position where the wafer does not make contact with the test board and the distance between the wafer and the test board is smaller than or equal to a distance threshold value; the test machine sends an open circuit calibration instruction to the test board, wherein the open circuit calibration instruction is used for eliminating adverse effects of stray capacitance between the wafer and the test board on wafer test; the test machine receives the capacity value of the stray capacitor from the test board; and the test machine sends an open circuit calibration success signal to the test board, and the open circuit calibration success signal is determined according to the capacity value of the stray capacitance and is used for indicating that the open circuit calibration of the wafer is successful and indicating a probe of the test board to contact the wafer so as to test the wafer.

The invention discloses an intelligent management method and system for an intelligent blood pressure cuff, and relates to the technical field of data processing. The method comprises the following steps: acquiring arm pressure distribution data and arm shape data of a target user; based on the arm pressure distribution data, the fitting degree between a plurality of segmented areas in the blood pressure cuff and the arm of the user is calculated; according to the arm shape data, determining a target cuff length and a target bending angle corresponding to each segmented region in the blood pressure cuff; for each segmented area, when the difference value between the fitting degree between the segmented area and the arm of the user and the standard fitting degree is larger than a fitting degree difference value threshold value, the blood pressure cuff is adjusted in combination with the target cuff length and the target bending angle corresponding to the segmented area. By implementing the technical scheme provided by the invention, the effect of improving the management efficiency of the blood pressure cuff is achieved.

The invention discloses a method and system for detecting the distance from a car coupler center line to a rail surface and a medium. Relates to the technical field of distance measurement. The method comprises the following steps: improving on the basis of a traditional measurement technology, acquiring a coupler image and a track image at the same point by using a camera of an inspection robot, and respectively performing mask segmentation and projection on the coupler image and the track image to obtain a coupler center line point cloud and a track surface point cloud; after the coupler center line point cloud and the track plane point cloud are converted to a base coordinate system of the inspection robot based on the conversion matrix, a centroid point coordinate of the coupler center line point cloud and a track plane equation are obtained; the distance between the center line of the car coupler and the rail surface can be rapidly and accurately measured, a large amount of human resource investment is saved, and measurement errors caused by different manual business levels can be avoided.

The invention discloses a multi-view vision hole site measuring method and device for a structural part, and relates to the technical field of multi-view vision. In order to solve the technical problems that an existing hole site detection method is insufficient in detection precision, low in detection efficiency, incapable of achieving comprehensive detection and unstable, the technical scheme provided by the invention includes that the multi-view vision hole site measurement method for the structural component comprises the following steps: loading a feature template image of a workpiece hole site, calculating similarity by using an image gradient field, and positioning the central position of a hole site from the workpiece image; a step of calibrating the position offset of the camera by using the correction target; according to the camera position, the light source condition and the image data of the hole site, the accurate coordinate position of the hole site of the workpiece in the three-dimensional space is calculated through a three-dimensional reconstruction method; and converting the three-dimensional coordinate data in the equipment coordinate system into a workpiece coordinate system. The method is suitable for being applied to the work of multi-view vision hole site measurement of the structural member.

The invention discloses a device and a method for improving the reliability of a thermocouple at a channel cooling section in a temperature rise stage, and belongs to the technical field of substrate glass manufacturing. The device effectively solves the problem of fixing the thermocouple by forming a notch in a thermocouple piece and arranging the thermocouple in the notch of a groove-shaped structure, so that the reliability of the thermocouple is improved. And the device is more stable and reliable in the use process. The notch is bent upwards, so that a local cavity is formed between the interior of the notch and the cooling pipe body, and the cavity structure is enough for flexible movement of a thermocouple temperature measurement spot welding point. The position of a temperature measuring point of the thermocouple is crucial to the accuracy of a measuring result. According to the device, the root of the thermocouple (the temperature measuring point of the welding type thermocouple) is accurately arranged in the notch, so that good contact between the temperature measuring point and a measured object is ensured, and the temperature measuring accuracy is improved. Through the sliding thermocouple structure, the problem of large-area damage of the top thermocouple in the temperature rise stage is solved, and the reliability of the thermocouple is improved.

The invention discloses a laser detection device and method for surface precision of an electronic watch, and the method comprises the steps: obtaining optical characteristic parameters and geometric characteristic parameters of the surface of the electronic watch, and carrying out the region division according to the parameters, thereby obtaining a region map and a region attribute list; determining a laser band combination and a pulse frequency according to the regional map and the regional attribute list, and performing time-sharing laser excitation to obtain multi-spectral-domain reflection signal data; carrying out local temperature adjustment on the high interference risk area, and obtaining multi-spectral domain reflection signal data after temperature adjustment; carrying out scattering feature extraction and interference peak identification by using the regional map, the multi-spectral domain data set and the temperature control data log; and determining a data fusion weight according to the region attribute list, and performing region fusion on the reflected signal to generate surface detection data. According to the technical scheme, the real surface geometric information of the surface of the electronic watch can be effectively obtained.

The invention belongs to the technical field of underwater equipment movable part displacement measurement, and particularly relates to an underwater displacement measurement device and a displacement measurement method. An underwater displacement measuring device comprises a measuring wedge block and a moving wedge block which are made of the same material, a measuring assembly is installed in the measuring wedge block and comprises an ultrasonic probe, a watertight connector and a measuring circuit, the ultrasonic probe is electrically connected with the measuring circuit, the measuring circuit is electrically connected with the watertight connector, and the watertight connector extends out of the measuring wedge block. The opposite face of the inclined face of the movable wedge block is a reflecting face, the ultrasonic probe is installed towards the reflecting face, and the measuring circuit is connected with a temperature sensor. The displacement measurement method comprises the following steps: measuring an underwater to-be-measured body by using the underwater displacement measurement device; the invention provides an underwater displacement measurement device and an underwater displacement measurement method, and aims to solve the problem that a displacement measurement sensor in the prior art cannot overcome the influence of the thickness of a shell and the influence of liquid properties and electromagnetic characteristics.

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 present invention relates to the field of gas metering technology, and discloses a civil gas metering method based on ultrasonic metering, including: using an ultrasonic gas meter to record the user's gas consumption, recording the gas-using equipment, gas consumption duration and time period in each gas usage cycle, and ensuring that the equipment heat load is a constant value. By screening the independent gas consumption time period of each device, its unit time gas consumption is calculated as historical data. At the same time, the noise of the gas pipeline is monitored. If the noise exceeds the limit, it is recorded as an abnormal period, and the abnormal time period and marking equipment are obtained. According to the marking equipment and the average unit gas consumption, a first data calibration strategy is performed, and the actual consumption and the estimated consumption are compared after the cycle ends. If there is no error, it is recorded. If there is an error, the second data calibration strategy is executed, and statistical calibration is performed according to the error value; the accuracy of gas metering is guaranteed by the first data calibration strategy, the second data calibration strategy and statistical calibration.

The invention discloses a synthetic leather on-line thickness measuring method, which comprises the following steps: S1, taking a rolling shaft attached to the back surface of synthetic leather as a reference, carrying out data acquisition through a sensor, and carrying out data preprocessing; s2, calculating a roller error compensation value by adopting an error compensation algorithm, and correcting measurement data in real time; s3, filtering the vibration data to obtain the thickness after vibration compensation; s4, based on the speed and tension compensation model, obtaining the thickness after speed and tension compensation; s5, performing data fitting on the sampled data of each point; s6, combining the corrected measurement data, vibration compensation, speed and tension compensation and a data fitting result, and calculating a final thickness value of each point; according to the method, real-time high-precision measurement can be carried out on the thickness of the synthetic leather in a dynamic production environment by taking the surface of a roller as a reference surface and utilizing a multi-sensor redundancy design, an error compensation algorithm, data filtering and a speed and tension compensation model.

The invention relates to the technical field of oil field oil production engineering, in particular to an underground data acquisition unit with flow, pressure and temperature monitoring functions and a method. The method is suitable for underground working condition monitoring of submersible motor type lifting equipment such as submersible screw pumps, submersible plunger pumps and submersible centrifugal pumps. The unit comprises a pressure-resistant shell, wherein a central pipe, an electromagnetic flowmeter, two pressure and temperature sensors and an underground parameter collector are integrated in the pressure-resistant shell; the two sensors are used for measuring the temperature and pressure of liquid flow of the central pipe and the temperature and pressure of an oil casing annulus respectively; the electromagnetic flowmeter measures the flow, and real-time temperature and pressure data are used for compensation to improve the precision. The unit is further provided with a collecting pipe, an upper end, a lower end, a connecting sliding ring, an annulus / oil pipe inner testing channel, a sealing rubber ring and the like. Through the integrated design, synchronous high-precision in-situ monitoring of underground key parameters is achieved, the problem that underground data of multiple instruments are not synchronous is solved, and a reliable data terminal is provided for an intelligent oil field.