72 results about "Laser displacement meter" patented technology

The invention relates to the technical field of laser displacement meters, discloses a calibration method of a laser displacement meter for a Beidou device based on multi-data coupling, and effectively solves the problems of time delay compensation and data synchronization of cooperative work of multiple devices in a dynamic environment. According to the invention, when a carrier moves at a high speed or environmental parameters suddenly change, submillimeter-level positioning precision can still be maintained, meanwhile, data processing delay is controlled within a millisecond-level range, the reliability of a measurement system under a complex working condition is remarkably improved, and through double marking of a GNSS timestamp and a local clock, the measurement precision is greatly improved. And an accurate time deviation observation value is provided for a subsequent time delay compensation algorithm, so that a time-space unified data basis is established in a data preprocessing stage, and the feasibility of multi-source heterogeneous data fusion is remarkably improved.

The invention relates to the technical field of ceramic intelligent manufacturing, in particular to a ceramic firing process thermal deformation intelligent prediction and self-adaptive temperature precise regulation and control system, which comprises a multi-source sensing module (a thermal infrared camera array, a temperature sensor, a laser displacement meter and a powder characteristic analyzer); a hybrid prediction model (a space-time convolutional neural network constrained by a physical mechanism); and the self-adaptive temperature control actuator comprises a partitioned burner group, a quenching / slow cooling pipeline and a gas-air volume decoupling controller. According to the scheme, through a multi-mode perception-hybrid modeling-dynamic optimization full-process closed-loop architecture, the single-point technical limitation of existing patents is broken through, and the zero-defect precise manufacturing target of ceramic firing is achieved.

The invention relates to a displacement and pneumatic pressure synchronous measurement method and system, an external trigger system triggers a multi-channel dynamic signal data acquisition system and a pressure scanning valve to synchronously start measurement, and the pressure scanning valve and a laser displacement meter can synchronously measure the pressure and displacement of all pressure measurement points; the pressure scanning valve and the single-channel piezoresistive differential pressure sensor can synchronously measure pressure information of a reference pressure measuring point, and the pressure information serves as accurate basic signal reference data. Time difference calculation is carried out on pressure signals of a reference pressure measuring point measured by the single-channel piezoresistive differential pressure transducer and the pressure scanning valve through a cross-correlation method and a manual alignment method, so that time sequence alignment is carried out on a displacement signal measured by the laser displacement meter and a pneumatic pressure signal measured by the pressure scanning valve. The time difference of the measured signals is calculated accurately, the signal time sequence consistency can be remarkably improved, the accuracy of a final result obtained through synchronous measurement is higher, and more reliable data support is provided for subsequent vibration analysis.

The invention discloses an omni-directional high-precision inclination angle monitoring device based on a laser displacement meter and a monitoring method of the omni-directional high-precision inclination angle monitoring device. The monitoring device comprises a support assembly, a transverse gravity balancing rod is arranged on the support assembly, a longitudinal gravity balancing rod is arranged on the transverse gravity balancing rod, a plumb bob vertical rod is arranged on the longitudinal gravity balancing rod, a gravity balancing block is arranged at the short end of the lower portion of the plumb bob vertical rod, and a laser reflecting plate is arranged at the long end of the upper portion of the plumb bob vertical rod. The support assembly is further provided with a transverse laser displacement meter and a longitudinal laser displacement meter which are opposite to the laser reflecting plate. The monitoring device is adopted in the monitoring method. The inclination degree of the monitoring device after slight inclination is obtained as delta L / H, and the azimuth angle A of the angle change direction of the slope is calculated through an anti-trigonometric function # imgabs0 #. The method has the beneficial effects that the inclination condition of the surface of the landslide and the azimuth angle of the inclination angle change direction can be dynamically detected.

The invention relates to the technical field of strain monitoring, and provides a jacking pipe convergence and strain monitoring method, which realizes omnibearing monitoring of a jacking pipe structure and environment by reasonably deploying a vibration sensor, a fiber grating strain gauge, a laser displacement meter and a gas and temperature and humidity sensor, and avoids the potential safety hazard of omission caused by incomplete monitoring information. Multi-dimensional data is transmitted to a processing node in real time, it is ensured that the data is accurately transmitted in the data transmission process, meanwhile, comprehensive preprocessing is conducted on the multi-dimensional data, and a solid foundation is provided for subsequent accurate analysis; the convergence strain information of the jacking pipe can be accurately generated by extracting the characteristics of the multi-dimensional data; according to the convergence strain information of the jacking pipe, the operation state of the heat distribution pipeline is scientifically evaluated and accurately predicted, early warning and visual display are carried out in time, safe and stable operation of the heat distribution pipeline is effectively guaranteed, accident risks are reduced, and economic losses and social influences are reduced.

The invention relates to the technical field of open caisson construction, in particular to an open caisson construction method suitable for a soft soil foundation, which comprises the following steps: excavating a foundation pit, pre-reinforcing the foundation, constructing a cushion layer, manufacturing an open caisson in sections, arranging a monitoring system, sinking in stages and partial pressure, dynamically adjusting hydraulic jacking force and finally sinking and sealing bottom. Wherein dynamic adjustment of hydraulic jacking force is realized through arrangement of a monitoring system, which is a main invention point of the invention, during sinking, data is fed back through a tilt angle sensor, a laser displacement meter and an earth pressure sensor, the jacking force is corrected according to a formula, and dynamic correction and emergency control are combined; accurate and intelligent control of open caisson construction is achieved, and the safety, efficiency and quality of soft soil foundation open caisson construction are improved.

The invention discloses a zero-damping magnetic suspension wind tunnel segment model test device, and relates to the technical field of bridge wind resistance experiments, the zero-damping magnetic suspension wind tunnel segment model test device comprises a segment model, a laser displacement meter, an adjusting device and a guide rail device, the adjusting device comprises a damping adjusting device and a magnetic suspension adjusting device, the damping adjusting device is connected with four corners of the segment model, the magnetic suspension adjusting device is arranged below the segment model, the damping adjusting device is connected with the guide rail device in a clamping manner, and the guide rail device is fixed on a top plate and a bottom plate of a wind tunnel laboratory. Magnetic suspension replaces traditional spring suspension, zero-damping suspension of the segment model in a wind tunnel test is achieved, and therefore dampers can be flexibly arranged according to test requirements, and the test damping ratio can be adjusted in a stepless mode; in addition, according to the testing device, the section proportion of the supporting device is greatly reduced, interference to airflow is smaller, and the quality of an obtained wind field is better.

The utility model discloses a coal mine pressure data combined monitoring system. Comprising a multi-point displacement meter installed in a coal mine tunnel top plate in a drilling mode, an anchor rod dynamometer installed on an anchoring part of the coal mine tunnel top plate or / and a tunnel side wall, laser displacement meters fixedly installed on the two sides of a coal mine tunnel bottom plate or / and the tunnel side wall, and a drilling stress meter installed in the coal mine tunnel side wall in a drilling mode. The multipoint displacement meter, the anchor rod dynamometer, the laser displacement meter and the borehole stress meter are respectively in communication connection with the data acquisition instrument, the data acquisition instrument is in communication connection with the underground monitoring information processor, and the underground monitoring information processor is in communication connection with the ground monitoring server. According to the utility model, the integrated monitoring of various mine pressure data of the coal mine tunnel is realized, the coal mine safety production is guided, the system is suitable for coal mine tunnel monitoring under different geological conditions, the data processing cost of coal mine safety monitoring is reduced, accidents caused by coal mine rock burst disasters are reduced, and the underground coal mine safety production is guaranteed.

The invention discloses an impact press-in test system based on a piezoelectric bimorph cantilever beam and a test method thereof. According to the invention, a piezoelectric bimorph cantilever beam is used as an actuator of a test system, and the piezoelectric bimorph cantilever beam is a macroscopic large-stroke piezoelectric actuator; a large-current high-voltage power supply is used for providing excitation voltage for a piezoelectric bimorph cantilever beam, large current rapidly charges a piezoelectric patch so as to generate high excitation voltage in an extremely short time, rapid bending deformation occurs, and a free end pressure head is pressed into the surface of a sample at a rapid impact speed; a force sensor and a laser displacement meter are adopted to form a measuring system, and force and displacement generated in the impact press-in process of a pressure head are measured in the same position at the same time; establishing a one-dimensional harmonic oscillator model, and calculating to obtain the real press-in load of the pressure head in the impact press-in process; according to the invention, the construction is simpler, the environmental adaptability and operability are strong, the requirement on the test environment is not very strict, and the test can be carried out under some complex conditions.

The invention provides a weld joint dynamic eddy current detection method and system based on reinforcement learning, the system comprises a sensing layer, a decision layer, an execution layer and an identification layer, the sensing layer is used for collecting detection data of a weld joint surface, and the sensing layer comprises an eddy current sensor, a laser displacement meter and a thermal infrared imager; the decision-making layer is connected with the sensing layer and is used for dynamically adjusting detection parameters based on a reinforcement learning algorithm; the execution layer is connected with the decision layer, is used for executing a detection action according to the adjusted detection parameters, and comprises a four-axis linkage eddy current sensor and a frequency converter; the identification layer is connected with the sensing layer and the decision-making layer, is used for identifying weld defects based on the eddy current signals, and comprises a multi-defect identification model; and the decision layer dynamically adjusts detection parameters of the execution layer through a reinforcement learning algorithm by taking the time-frequency characteristic of the eddy current signal, the lift-off gap and the environment temperature as a state space and taking the frequency adjustment amount and the lift-off gap control instruction as an action space, so that real-time detection of the apparent defects of the welding seam is realized.

The invention relates to a method, a device, equipment and a medium for measuring the size and the warping degree of a ceramic substrate for heat dissipation of a high-power power electronic module, and the method comprises the following steps: S1, placing the ceramic substrate on a horizontal plane, scanning the surface of the ceramic substrate through a 3D line laser measuring instrument, and obtaining a height image of the surface of the ceramic substrate; s2, dividing the height image into a ceramic substrate area and a background horizontal plane area; s3, the width and height of the ceramic substrate are calculated after the ceramic substrate area is rotated and straightened; and S4, according to the height image, measuring the position of the highest point of the ceramic substrate, the height value of the highest point and the height value of the horizontal plane of the background horizontal plane area, and measuring the thickness value of the highest point of the ceramic substrate by using a correlation laser displacement meter. And calculating the warping degree of the ceramic substrate according to the height value and the thickness value of the highest point of the ceramic substrate and the height value of the horizontal plane. The warping degree, the size and the thickness of the ceramic substrate can be accurately measured, and the product performance is guaranteed.

The present invention relates to the field of sound barrier detection technology, specifically a method and system for rapid detection of the detachment of a highway sound barrier screen, comprising the following steps: S1. The detection vehicle travels at a constant speed, starts and calibrates the laser displacement meter module, and obtains a correction value; S2. Continuously measures the distance between the sound barrier and the vehicle, and constructs a distance information model; S3. Preprocesses and identifies abnormalities in the data, and determines abnormal conditions of the sound barrier; S4. If the detachment or displacement of the sound barrier screen is detected to exceed a preset threshold, the abnormal information and its position are recorded; S5. Automatically analyzes the detection data and generates a sound barrier detection report. The advantages of the present invention are: efficient and automated detection of the service status of the sound barrier screen is achieved, and formatted data is effectively accumulated, providing a corresponding data basis for the detection, maintenance, and management of road and bridge sound barriers, and providing a strong guarantee for the safe maintenance of transportation infrastructure.

To provide a metal-clad laminate or the like which can reduce variation in the amount of warpage of a semiconductor package and has a small variation in the rate of dimensional change. The metal-clad laminate is a metal-clad laminate including a metal foil and a cured product of one or more plies of a prepreg, in which an average thickness measured according to the following method using a laser displacement meter is 400 µm or more, and a value calculated from the following formula (1) is 0.70% or less: (average value of standard deviation of thickness obtained by the following method) × 100 / (average thickness of metal-clad laminate) (Method for measuring thickness of metal-clad laminate) The thickness is measured by cutting out four measurement substrates each having a size of 60 mm (vertical) × 60 mm (horizontal) in a plane direction from an arbitrary portion of the metal-clad laminate. Measurements are carried out at intervals of 1 mm on two diagonal lines, with the starting point and the ending point of the measurement not located at the ends of the metal-clad laminate. For each of the four measurement substrates, a standard deviation is obtained from the measured thicknesses at all the points, and then an average value of the standard deviations of the thicknesses of each of the four measurement substrates is obtained. Further, the average thickness of all the points measured for the four measurement substrates is calculated, and this is taken as the average thickness of the metal-clad laminate. Details are as described in the description herein.

The invention relates to the technical field of road detection, and provides a device and method for collecting pavement internal deformation characteristics in a road model experiment, and the device comprises a transparent visible gel layer which is used as a road surface layer simulation material and is flatly laid above a roadbed simulation material in the horizontal direction; the plurality of three-dimensional tracing particles are arranged in the transparent visible gel layer and are distributed in a staggered manner in a three-dimensional space, each three-dimensional tracing particle comprises a cylinder extending in the vertical direction, and cross-shaped tracing plates are arranged on the upper surface and the lower surface of each cylinder; wherein the three-dimensional tracer particles cooperatively deform along with the transparent visible gel layer in the deformation process of the roadbed simulation material, and are used for acquiring three-dimensional displacement and rotation information through an image recognition device, so that three-dimensional visualization of road internal deformation characteristics is realized. Limitation of a traditional laser displacement meter is broken through, and whole-process monitoring of road transverse deformation is achieved.

A wind power foundation saturation container multi-dimensional loading device comprises a vertical moving part, a plane rotating part, a model box part and a saturation part, the vertical moving part is used for being connected with and driving the plane rotating part to move vertically, the plane rotating part is used for driving a loading tower to move horizontally, an adjustable supporting leg is arranged on the loading tower, and a winch motor is arranged on the adjustable supporting leg and connected with a winch. The model box part comprises a foundation material arranged in a model box body, tracer particles doped in the foundation material, a model structure arranged in the foundation material, an inclinometer and a loading ring arranged on the top surface of the model structure, a cable connected between the loading ring and the hook, a dynamometer arranged on the cable, and a laser displacement meter arranged on the inner wall of the model box body; the saturation part comprises a static sounding support arranged on the inner wall of the model box body, a clamp is arranged on the static sounding support, a liftable static sounding probe rod is arranged in the clamp, a water injection hole and a water drainage hole are formed in the side wall of the model box body, and a camera is erected right in front of the model box body.

To provide a metal-clad laminate or the like which can reduce variation in the amount of warpage of a semiconductor package and has a small variation in the rate of dimensional change. Specifically, the metal-clad laminate is a metal-clad laminate including a metal foil and a cured product of one or more plies of a prepreg, in which an average thickness measured according to the following method using a laser displacement meter is 400 µm or more, and an average value of absolute values of differences between a maximum value and a minimum value of thicknesses is 20 µm or less. (Method for measuring thickness of metal-clad laminate) The thickness is measured by cutting out four measurement substrates each having a size of 60 mm (vertical) × 60 mm (horizontal) in a plane direction from an arbitrary portion of the metal-clad laminate. The measurement is performed at intervals of 1 mm in the vertical direction from a start point of less than 1 mm (however, not 0 mm) from the upper side; the measurement of the vertical line is performed for 12 lines; the first line is located 2.5 mm away from the left side, and measurement lines are provided at intervals of 5 mm thereafter; further, the thickness is measured at intervals of 1 mm in the horizontal direction from a start point of less than 1 mm (however, not 0 mm) from the left side; the measurement of the horizontal line is also performed for 12 lines; the first line is located 2.5 mm away from the upper side, and measurement lines are provided at intervals of 5 mm thereafter; details are as described in the description herein.

The invention is suitable for the technical field of civil engineering, and relates to a displacement monitoring system and a data correction method in a surrounding rock temperature changing process, and the system comprises a fixed disc, a laser displacement meter, a connecting piece, a pedestal, a track, and a driving piece. The rail is connected with the driving piece, the base is installed on the rail, the base is provided with a connecting piece, the connecting piece is connected with the fixed disc, and the fixed disc is provided with a plurality of laser displacement meters used for collecting tunnel data. The tunnel structure deformation monitoring device is simple in structure, convenient to disassemble, flexible in positioning, capable of achieving real-time, long-term, accurate and stable tunnel structure deformation monitoring and high in feasibility, economical efficiency and generalization performance.

The utility model discloses a monitoring device for vertical displacement of a main beam during replacement of a beam type bridge support, and solves the problem that the traditional vertical displacement monitoring equipment such as a dial indicator, a pull rope type displacement meter, a laser displacement meter and a steel ruler is low in measurement accuracy and precision due to the fact that the traditional vertical displacement monitoring equipment is not placed vertically or the resolution ratio of a measuring tool is insufficient. The vertical displacement monitoring point is arranged on the side face of the pier cap or the abutment cap, and the depth vernier caliper is used for measuring the distance between the vertical displacement monitoring point and the bottom of the main beam, so that the monitoring precision and accuracy of the vertical displacement of the main beam are improved to a great extent, and the deviation of field sensor installation and alignment is eliminated; and the process of measuring the vertical displacement change of the main beam on site is simplified. And meanwhile, compared with the conventional measurement that a monitoring point is exposed to the outside, the monitoring point is transformed on the premise that the monitoring point is greatly damaged by man-made or environment. The method and the device have good economic practicability, are convenient to operate and are suitable for large-scale popularization and application.

The invention provides a method for measuring the damping per unit length of an inhaul cable, and belongs to the technical field of inhaul cable damping measurement, and the method comprises the steps: measuring the mass per unit length of the inhaul cable, and arranging a laser displacement meter in the vibration direction of the inhaul cable; initial displacement is applied to the inhaul cable and released, and the inhaul cable is excited to vibrate; measuring a vibration displacement time-history curve, a speed time-history curve or an acceleration time-history curve in any point surface of the inhaul cable in the vibration state through a laser displacement meter, and carrying out filtering processing on the vibration displacement time-history curve, the speed time-history curve or the acceleration time-history curve; extracting peak values of the displacement time-history curve, the speed time-history curve or the acceleration time-history curve after filtering processing and moments corresponding to the peak values; and based on the peak value of the displacement time travel curve, the speed time travel curve or the acceleration time travel curve after filtering processing, the moment corresponding to the peak value and the mass per unit length of the inhaul cable, obtaining the damping per unit length of the inhaul cable.

To improve workability for measuring warpage of a measuring surface.SOLUTION: A warpage measuring apparatus 1 comprises: a horizontal direction warpage measurement unit 2 including joint support pins 22, 23 with prescribed projection dimension near both ends of a horizontal long-sized material 21 in a longer direction and a first laser displacement meter 24 on an intermediate part in the longer direction; and a vertical direction warpage measurement unit 3 including laser displacement meters 32, 33 near both ends of a vertical long-sized material 31 in a longer direction. Distance to a joint bottom is measured by the laser displacement meters 24, 32, 33 while joint support pins 22, 23 are brought into contact with a joint bottom of an outer wall as reference joint. Warpage of the outer wall in a horizontal direction is measured by projection dimension of the joint support pins 22, 23 and measurement result of the first laser displacement meter 24, and warpage of the outer wall in a vertical direction is measured by an average value of distances to the outer wall respectively measured by the laser displacement meters 32, 33 and distance to the outer wall measured by the first laser displacement meter 24.SELECTED DRAWING: Figure 1

A protective device and method for a continuous wind tunnel flutter test model, belonging to the field of wind tunnel testing technology, addresses the problem that traditional physical methods cannot measure the deformation of special structural models during flutter tests. The device includes a reflector and a laser displacement meter matrix, which are respectively positioned opposite each other on the two sidewalls of the wind tunnel test section. One end of the test model is connected to one sidewall, and the free end of the test model extends horizontally towards the other sidewall. The amplitude at a specified position on the test model is calculated using the laser displacement meter matrix, and this is used as the criterion for the activation of the safety protection device. Once the calculated result exceeds the safe range, the safety protection device can be quickly activated to protect the test model and stop the wind tunnel test. This device and method overcome the shortcomings of using other types of sensors for safety threshold judgment in continuous transonic wind tunnel flutter tests, avoiding damage to the wind tunnel and test model during flutter tests.

The invention provides a three-dimensional high-speed vibration target clear image acquisition method and system and a medium, and the method comprises the steps: collecting a vibration target image based on a high-speed camera, carrying out the preprocessing of the vibration target image, and extracting a target contour; analyzing a target center point based on the target contour, and measuring three-dimensional position information of the target center point at different time nodes based on a laser displacement meter; analyzing plane vibration information and depth vibration information of the target based on the three-dimensional position information of the target center point at different time nodes; performing fusion processing on the plane vibration information and the depth vibration information to generate three-dimensional vibration state information of the target; adjusting a visual angle and a focal length of the high-speed camera based on the three-dimensional vibration state information of the target to obtain a clear image of the target; through dynamic zooming and angle adjustment of the high-speed camera, high-speed vibration tracking can be carried out on a complex-shape target under high magnification, and a clear image is obtained.

A test device for simulating valley amplitude deformation of a hydropower station comprises a model box, a bed rock module is arranged in the model box and comprises multiple layers of landfill media with different permeability coefficients, a simulated river channel is arranged on the surface of the bed rock module, and a dam body module is arranged on the simulated river channel. A water inlet hole and a water outlet hole are formed in the positions, located on the upstream side and the downstream side of the simulated river channel, of the model box correspondingly, and a dam body drainage opening with a valve is formed in the dam body module; by means of the experimental device, the mechanism of valley amplitude deformation of the hydropower station can be researched indoors, the situation of the real hydropower station can be simulated, the possible deformation trend can be predicted, a valley amplitude deformation calculation and analysis model is constructed, and the experimental device can be used for calculating and analyzing the valley amplitude deformation of the hydropower station. And reference is provided for calculation, analysis and prediction of possible valley amplitude deformation of the hydropower engineering under construction and to-be-constructed engineering, the test operation is simple and easy to understand, and the test operation and maintenance cost is low.

The invention discloses a harmonic oscillator quality factor and nonuniformity rapid testing device. The harmonic oscillator quality factor and nonuniformity rapid testing device comprises a vacuum system, an excitation system, a harmonic oscillator, a clamping and transposition device, a laser vibration meter and a resolving module. The harmonic oscillator is excited to vibrate in a physical knocking mode; acquiring single-point displacement data of a harmonic oscillator test position by using a laser vibration meter; obtaining the inherent frequency and the frequency difference of the harmonic oscillator by adopting a frequency domain analysis method; after test data are segmented according to time, spectral analysis is carried out, the amplitude spectral density of displacement signals in different time periods is obtained, and the difference of the circumferential quality factor of the harmonic oscillator is obtained by using the amplitude spectral density change of two inherent frequency points; and finally, calculating to obtain two quality factors. According to the method, the purpose of accurately identifying the quality factor and the non-uniformity of the harmonic oscillator through single test is achieved, the method has the advantages of being high in test speed, low in requirement for the number of test devices, high in test precision, good in practicability and the like, and the test efficiency of the quality factor and the non-uniformity of the harmonic oscillator is greatly improved.

The utility model relates to the technical field of pile foundation engineering, and particularly discloses a physical model test device for testing the anti-pulling performance of a non-soil-squeezing precast pile foundation, which comprises a multifunctional cement grouting machine, a slurry storage pool, a vacuum pump, a water storage tank, a vacuum water pumping pipe, a model box bottom plate, a model box side plate and a high-strength toughened glass plate, and the output end of the multifunctional cement grouting machine is communicated with the outer surface of the slurry storage tank. According to the large-diameter non-soil-squeezing uplift pile construction device, an axial load is applied through an axial jack, loads of the upper portion and the lower portion of a model pile are collected through an upper pressure sensor and a lower tension sensor, pile body strain is collected through a pile body strain gauge, and a load displacement curve (Q-S curve) of a static load test of an uplift pile is obtained; the bearing capacity and the side friction resistance of the while-drilling pipe pile are obtained through calculation, the displacement of the uplift pile and the displacement of the soil layer can be obtained through the dial indicator and the laser displacement meter respectively, and therefore the contribution effects of different uplift measures on the uplift force are judged.

This invention provides a laser measurement method that can measure the outer circumference shape of a crankshaft counterweight over a wider area. [Solution] In the laser measurement method for the shape of a crankshaft counterweight, the crankshaft is rotated around the rotation axis O, and the laser beam L of a laser displacement meter is irradiated onto the counterweight 1 to measure the outer circumference shape of the counterweight 1. During this measurement, the laser beam L is irradiated with an offset relative to the rotation axis O so that the direction of irradiation of the laser beam L does not intersect with the rotation axis O.

The invention relates to the technical field of safety monitoring, and particularly discloses a dry coal shed safety monitoring system, which comprises a data acquisition module, a data transmission module, a data processing module, a data storage module, a data processing module, a data processing module and a data processing module, and is characterized in that stress sensors, laser displacement meters, settlement sensors and steel rope meters are arranged at key parts of a dry coal shed; data are transmitted to a master control server with a built-in finite element analysis and data processing module and a model building module through a collector, a finite element model is built according to design parameters, foundation displacement working conditions of + / -5 mm to + / -50 mm are simulated, the mapping relation between an upper structure and foundation displacement is fitted, the data processing module is used for correcting displacement data through the mapping relation, and the displacement data are obtained. And the early warning module is used for setting a multi-parameter threshold value, and triggering initial / middle / advanced early warning according to single abnormality, multi-parameter abnormality and continuous increase of the basic displacement. The system realizes real-time comprehensive monitoring, fills the blank of the prior art, and ensures the safety and stability of the dry coal shed.

The utility model discloses a multi-source monitoring data fused rock-like mass double-hole test piece lateral confinement compression test device, which relates to the technical field of rock mass engineering tests, and comprises a visual lateral confinement box used for placing and fixing a tested rock mass and provided with double holes in the side wall; the pressure-bearing cushion block is placed at the top of the test rock mass and is used for bearing pressure; the loading equipment is used for applying a downward load to the pressed cushion block; the telescopic mechanical arms are mounted on the visual lateral confinement box in a hinged mode, and the telescopic mechanical arms are mounted on one side of the visual lateral confinement box; the positioning bracket is fixedly mounted on one side of the visual lateral confinement box; the data acquisition device comprises a laser displacement meter and a camera, the laser displacement meter is installed on the telescopic mechanical arm, the camera is installed on the positioning support, and the laser displacement meter and the camera are both arranged towards the visual lateral confinement box. And monitoring and measurement of multivariate data of lateral confinement compression of the rock-like double-hole test piece cannot be effectively synchronized.

The application relates to a slope monitoring and anchor cable support integrated device and a monitoring method of anchor cable support, wherein the slope monitoring and anchor cable support integrated device comprises an anchor cable support assembly, a monitoring assembly, a first sensing module, a second sensing module and a control assembly; the anchor cable support assembly is used for anchoring a slope and providing prestress; the monitoring assembly cooperates with a displacement sensor to monitor and determine whether the rock mass after anchoring changes, whether the applied prestress fails, a vibration sensor monitors the state of a single-point position and determines whether the device is in vibration or displacement, each laser displacement meter determines whether the relative position between adjacent devices has changed, the anchoring hole of the slope, the prestress and the whole slope are monitored, and finally real-time monitoring and data transmission are realized through the control assembly, so that the monitoring is more comprehensive and effective. The application effectively solves the problem that the existing slope support monitoring method monitors the slope as a whole, and the monitoring is not comprehensive.

The application provides a hot-pressing intelligent control regulation method and device based on FPC, and belongs to the technical field of FPC hot-pressing processing. The method synchronously collects the surface image and three-dimensional topographic point cloud data of the FPC substrate through a camera and a laser displacement meter, realizes real-time detection based on conditions, intelligently switches the feature extraction mode according to the interference detection result, adopts an edge detection algorithm when no interference occurs, starts a Bayesian Dropout network to perform multiple random sampling inferences when interference occurs, activates a digital twin to predict deformation characteristics if the coefficient of variation is greater than a preset threshold, calculates the hot-pressing parameter compensation amount according to the deformation characteristics and adds a tolerance weight, and continuously optimizes the control effect through closed-loop feedback. The application effectively solves the image feature extraction distortion problem caused by optical interference, and significantly improves the hot-pressing control precision and product yield.