6687 results about "Pressure detection" patented technology

The invention relates to the technical field of pressure detection, in particular to an oil well pressure anomaly detection method and system based on deep learning, and the method comprises the following steps: collecting a control signal and pressure data, calculating a slope difference and fluctuation to mark a sudden change point, extracting a multi-dimensional feature group to generate a training sample, and constructing a deep learning model to recognize pressure difference anomaly. The oil well pressure abnormal time period is predicted in real time. According to the method, accurate attribution of abnormal fluctuations in the oil well operation process is achieved by constructing the time sequence corresponding relation between control signals and pressure difference sudden change, the target pertinence of pressure change recognition is improved, a sliding structure extracts multi-dimensional dynamic characteristics, the capacity of capturing wellhead or underground pressure micro-amplitude abnormity is enhanced, and the training sample is combined with a control behavior label, so that the accuracy of the abnormal fluctuations in the oil well operation process is improved. The distinguishing capability of the model to different abnormal forms is optimized, the adaptability under complex working conditions is improved, a real-time prediction mechanism ensures that oil well pressure state recognition has continuity, rapidness and high confidence, and risk early warning and operation guarantee in the oil extraction process are effectively supported.

The invention discloses a scraper chain tension detection device for a mining scraper conveyor and a tension control method. The scraper chain tension detection device comprises a connecting seat, a pressure detection assembly and a data processor, the connecting base is fixed to a U-shaped groove in the middle section of the machine tail side plate. The pressure detection assembly comprises a base, a floating block, a pressure sensor and a gland; the base is installed on the connecting base, one end of the gland is installed on the base, the other end of the gland extends towards one side of the scraper chain, so that the gland and the upper edge of the machine tail form a channel for the axe end of the scraper to run, the pressure sensor is installed on the lower end face of the gland, and the floating block is installed on the side, facing the scraper chain, of the base in a sliding mode. The floating block is located under the pressure sensor. And the data processor establishes communication connection with the pressure sensor. The positive pressure of the axe end of the scraper on the upper edge is detected through the pressure detection assembly installed on the upper edge of the machine tail, and then the tension condition of the scraper chain is judged by detecting the tension of the scraper chain on the upper portion of the machine tail and serves as the basis for adjusting the tension of the scraper chain.

A bionic mechanical finger, comprising a bionic finger sleeve (100), a tactile sensing unit (200), a capacitance-to-digital converter (CDC) circuit, a digital processing circuit, and an analog switch array. By means of the design of a sensor structure and an inner insulating layer and the combination with a CDC, the tactile sensitivity comparable to or even superior to that of a human hand is obtained; the design that an upper electrode (210) is grounded and self-capacitors are used as lower electrodes (221) can ensure the precision of pressure measurement, thereby lowering the dependence on chip resources; and in combination with a restriction rule of capacitor design, the mechanical finger achieves a good response in daily grabbing scenarios. Also provided is a mechanical hand comprising the bionic mechanical finger.

The invention relates to the technical field of integrated circuit testing, in particular to a distance-adjustable probe connector device which comprises an impedance detection unit which comprises a connector fixing part, a connector rotating part, a single connection port, a signal probe and a grounding probe. The impedance data unit is used for determining a characteristic impedance value of the tested microstrip line based on data acquired by the signal probe and the grounding probe; the pressure detection unit is used for determining the contact pressure according to the telescopic displacement of the signal probe and the grounding probe; the control unit determines the allowable range of the contact pressure of the probes based on the line width of the microstrip line to be tested and the distance between the probes, and adjusts the angle between the grounding probe and the surface of the PCB based on the contact pressure difference between the signal probe and the grounding probe and the line width of the microstrip line. And adjusting the contact pressure of the signal probe to obtain the effective characteristic impedance value of the tested microstrip line. According to the invention, the angle and pressure of the grounding probe are intelligently adjusted, and the problem of impedance measurement drift caused by pressure imbalance of double probes is eliminated.

The invention provides a charging pile supporting multi-point automatic cooling, and belongs to the technical field of charging piles, and the charging pile comprises a main control module, a temperature acquisition module, a current acquisition module, a pressure detection module, a heat dissipation control module, a communication module, a storage module, a display module and a power management module. A system control module arranged in a main control module firstly acquires temperature data of each point of a charging pile through a temperature acquisition module, constructs a temperature difference matrix and performs matrix decomposition to obtain a temperature space basis matrix and a time characteristic matrix; then, a dynamic convolution kernel is generated based on the characteristic value of the temperature space basis matrix, a temperature characteristic extraction network is constructed, and accurate extraction of temperature characteristics is realized. And the system further establishes a thermodynamic state equation set, the heat dissipation power is accurately calculated and controlled in combination with a temperature difference change coefficient matrix, and finally accurate regulation and control of multi-point temperature are achieved.

The invention provides a human-computer interaction virtual-real simulation method and system of an intestinal nutrition nursing teaching system, and relates to the technical field of virtual interaction teaching. By integrating a force feedback glove, a bioelectric sensor and a pressure detector, multi-mode interaction data acquisition including intubation angle deviation, maximum force application pressure value and step interval time is realized; the operation feedback dimension and immersion are improved; the system is combined with a scene construction and intelligent guide module, when the detection operation goodness of fit is lower than a preset threshold value or the process completion degree is insufficient, force feedback vector correction and cognitive prompt are triggered, and standard attitude and step memory are guided; and the comprehensive evaluation module summarizes key indexes to calculate a total operation score, performs defect positioning and training suggestion matching on low-score behaviors, generates a structured visual learning report, constructs a cognition-operation-feedback closed loop, and solves the problems of single interactive feedback, insufficient teaching structuralization and lack of feedback mechanisms.

The invention relates to a shear-based acceleration and pressure composite sensor and an assembly method thereof, and belongs to the field of composite sensors. According to the technical scheme of the acceleration and pressure composite sensor based on the shear type structure, an acceleration detection module comprises a mass block of a regular polygon prism structure, and each side face of the mass block is provided with an acceleration sensitive ceramic piece; the pressure detection module comprises a force transmission column of a regular polygon prism structure, and each side face of the force transmission column is provided with a pressure sensitive ceramic piece, an electrode piece and an insulation block. According to the scheme, the sensitive elements of the acceleration sensor and the pressure sensor core are arranged in a polygonal mode to form a spatial three-dimensional structure, the effective area of the sensitive elements in unit volume is increased, the multiple sensitive elements act together to form superposition of pressure signals, the detection precision and sensitivity of the two are guaranteed, and the detection precision is improved. Therefore, the overall size of the composite sensor is greatly reduced on the premise that the original precision is maintained, and the composite sensor is miniaturized.

The invention relates to the field of sealing detection, in particular to a high-pressure stop valve body sealing performance detection device which comprises a detection box body used for placing a valve body for observation and comprising a water tank, the water tank is arranged to be a U-shaped groove with an upward opening, and the bottom of the side of the water tank is fixedly connected with a mounting plate. An outer electric push rod is mounted at the top of the mounting plate; and the supporting assembly is arranged in the water tank, is used for bearing the valve body and comprises a cross beam, and limiting sliding rails are arranged on the two sides of the cross beam. Through cooperation of the first plugging assembly, the second plugging assembly and the supporting assembly, external bubble interference can be effectively avoided, two-way pressure detection is supported, and the detection accuracy and automation level are improved, so that the problems that in the prior art, in the detection process, non-leakage bubbles are generated, judgment of detection personnel is interfered, and the detection efficiency is improved are solved. And false detection or missing detection is caused. And due to limitation of one-way detection, the sealing performance of the valve body in a two-way pressure-bearing state is difficult to comprehensively evaluate.

The invention discloses a steam compressor system and a control method. The system comprises a steam compressor, a controller, a heat exchange device, and a steam inlet pressure detection device, a steam exhaust pressure detection device and a steam flow detection device which are respectively connected with the controller, the heat exchange device internally comprises a gas phase area and a liquid phase area, and the gas phase area is communicated with a steam inlet of the steam compressor through a steam inlet pipeline; the steam inlet pressure detection device is arranged on the steam inlet pipeline; a heat exchange coil and a heating device are arranged in the liquid phase area; an inlet of the heat exchange coil is communicated with a steam outlet of the steam compressor through a steam exhaust pipeline; the steam exhaust pressure detection device and the steam flow detection device are arranged on the steam exhaust pipeline; an outlet of the heat exchange coil extends to the outside of the heat exchange device; and the controller is respectively connected with the steam compressor and the heating device. According to the steam compressor system provided by the embodiment of the invention, the steam heat can be recycled, so that the energy consumption of the steam compressor test is reduced, and the test cost is reduced.

The invention discloses a flexible three-dimensional force sensor, and the sensor comprises a housing which is an elastic part and is in the shape of a hemisphere or a semi-ellipsoid; the flexible circuit printed board is installed in the shell, a light source and a plurality of photosensitive sensors are installed on the flexible circuit printed board, the light source is located in the center of the shell, and the photosensitive sensors are distributed around the light source in a circumferential array mode; the shielding structure is mounted on the inner wall of the shell; wherein the space between the shell and the flexible printed circuit board is sealed with air, and the shielding structure can extend into the space between the light source and the corresponding photosensitive sensor to block light path propagation so as to trigger the corresponding photosensitive sensor. The flexible three-dimensional force sensor is simple in structure, complex design is avoided, the production cost can be reduced, and the size can be conveniently reduced so as to be applied to a micro machine; the inner cavity of the shell is sealed with air, so that the flexible three-dimensional force sensor can bear larger pressure, and the pressure detection range is larger than that of a traditional flexible three-dimensional force sensor. The invention relates to the technical field of sensors.

The invention discloses a cast pipe inner wall grinding device and system and relates to the technical field of grinding equipment, the cast pipe inner wall grinding system comprises a rack, a rotary supporting device and a cast pipe inner wall grinding device, and the cast pipe inner wall grinding device comprises a grinding feeding mechanism, an anti-swing mechanism and a grinding mechanism; the grinding feeding mechanism comprises a first linear driving device, a first rotating power source, an outer fixing sleeve and an inner rotating shaft, the anti-swing mechanism comprises an outer rotating sleeve, a positioning wheel assembly and a distance adjusting mechanism, and the grinding mechanism comprises a second linear driving device and a grinding wheel body. The outer fixing sleeve is radially supported through the positioning wheel assembly, radial swing of the grinding wheel shaft is restrained, and the grinding stability can be improved; the distance adjusting mechanism can dynamically adjust the distance between the positioning wheel assemblies to adapt to cast pipes with different calibers; and the second linear driving device drives the grinding wheel to move in the radial direction, constant-pressure grinding is achieved in cooperation with the pressure detection device, the grinding rhythm is dynamically adjusted, the grinding effect can be improved, and the grinding consistency is improved.

The invention discloses a robot hand self-adaptive control system based on multi-modal sensing and reinforcement learning, and relates to the technical field of robots, the robot hand self-adaptive control system comprises a sensing layer, a signal processing layer and a calculation layer, the signal processing layer is correspondingly connected with an integrated temperature and humidity compensation module through each sensor unit, and the integrated temperature and humidity compensation module is connected with the calculation layer. The pressure detection value change of each sensor unit due to temperature and humidity is compensated, so that the detection precision is improved; through a geometric constraint introduction module and a pressure field reconstruction module, the geometric constraint introduction module uses a geometric shape of an object contact surface as prior information to correct a pressure field, and geometric constraint is introduced to ensure that the pressure field accords with a physical law at an object edge or a curved surface area; the pressure field reconstruction module is used for converting discrete sensor data into a continuous pressure distribution field, meanwhile, geometric constraint information is fused into the continuous pressure distribution field, and the mechanical property of the contact area of an object and the hand of the robot can be accurately described through reconstruction.

Embodiments relates to systems and methods to calculate a tire pressure scheme to be utilized by a tire of a vehicle during a trip, communicate a command to the tire pressure control apparatus, to adjust tire pressure of a tire based on the tire pressure scheme, detect a problem encountered in adjusting the tire pressure of the tire based on the tire pressure scheme, generate an alert regarding the problem via a driver assistance interface, and recommend an action to be taken to mitigate the problem.

The invention relates to the technical field of ICT testing, in particular to an efficient online ICT intelligent testing device which comprises a machine table, a tester is fixedly mounted at the top of the machine table, an air cylinder is fixedly mounted at the top of the tester, a mounting seat is fixedly mounted at the output end of the air cylinder, and limiting rods which are symmetrically arranged in pairs are mounted in the tester. A limiting rod is arranged at the top end of the mounting seat, a test board slides on the outer wall of the limiting rod, an air pump is fixedly mounted at the bottom end of the test board, a clamping mechanism for fixing a circuit board is arranged at the top end of the test board, and a pressure detection mechanism for detecting the circuit board is arranged at the bottom end of the mounting seat. The air inlet speed is automatically adjusted through the thickness of the circuit board, the circuit board is protected, pseudo soldering spots are accurately positioned through the air cylinder, the probe and the displacement sensor, the air cylinder is used for driving components to move, the welding spots with cracks are detected through vibration, and the detection efficiency and reliability are improved.

The invention discloses intelligent bent pipe punch forming equipment and method, and relates to the technical field of pipe fitting punch forming, the intelligent bent pipe punch forming equipment comprises a machine body and a pipe blank, the machine body is provided with a die mechanism, a pushing mechanism and an elbow core rod provided with a first quick release assembly, and the die mechanism comprises an upper die and a lower die which are fixed to the machine body; the upper die and the lower die are respectively provided with forming runners which are matched with each other, and the tube blank is placed in the forming runner of the lower die. By arranging the pressure feedback mechanism and the lubricating oil spraying mechanism, the friction force between the pipe blank and the elbow core rod is converted into the pressure value change in the pressure detection cavity and transmitted to the piezoelectric sensor, the piezoelectric sensor feeds back the pressure value to the control unit, and the control unit can control the rotating speed of the oil pump according to the pressure value. The larger the friction force between the pipe blank and the elbow core rod is, the higher the rotating speed of the oil pump is, the more lubricating oil is sprayed out of the oil spraying holes, the intelligent degree of lubrication is improved, and the stamping effect is guaranteed.

According to the battery pack collision detection system, a plurality of pressure detection units arranged on a battery pack are used for collecting pressure values, and a collision judgment module is used for judging whether the pressure values collected by the pressure detection units are larger than a pressure threshold value or not and whether the change rate of the pressure values is larger than a set change rate or not; when it is judged that the pressure value collected by any pressure detection unit is larger than the pressure threshold value and the change rate of the pressure value is larger than the set change rate, it is judged that the battery pack collides. Therefore, according to the battery pack collision detection system, when it is judged that the pressure value collected by any pressure detection unit is larger than the pressure threshold value and the change rate of the pressure value is larger than the set change rate, it is judged that the battery pack is collided, the collision detection accuracy is improved, and the false alarm rate is reduced; the technical problem of poor collision detection accuracy in the prior art is solved.

The invention belongs to the technical field of energy storage cooling, and particularly relates to a cooling circulation system and an equipment cooling method, and the cooling circulation system comprises a liquid inlet system, a heat exchange system and a liquid outlet system. The heat exchange system comprises a plurality of heat exchange units which are connected in parallel; the liquid inlet system is connected with the input end of the heat exchange system, and a pressure detection device, a liquid temperature measurement device I, a pollution discharge degassing tank and a liquid circulation driving unit are connected into the liquid inlet system; the liquid outlet system is connected with the output end of the heat exchange system, and a conductivity detection device, an outlet pressure detection device and a liquid temperature measurement device II are connected into the liquid outlet system. Through dynamic modular adjustment, multi-parameter intelligent control, energy-saving composite heat dissipation and high-reliability design, the problems of low heat dissipation efficiency, high energy consumption, high maintenance cost, poor adaptability and the like in the prior art are effectively solved; and particularly, the method has remarkable advantages in the aspects of precise heat dissipation of high-power-density equipment, stable operation under complex working conditions and full-life-cycle cost control.

The invention relates to the technical field of canned product pressure detection, in particular to a food canned product pressure detection device which comprises a detection platform, a supporting frame is installed at the bottom of the detection platform, and an inverted U-shaped frame is fixed to the middle of the top of the detection platform. The U-shaped frame and the detection platform are jointly provided with a positioning unit used for positioning cans, and a pressing unit and an abutting unit are arranged on the top of the detection platform and located on the left side and the right side of the U-shaped frame respectively. According to the invention, the vertical cylinder presses the arc-shaped clamping jaw to simulate the vertical pressure of the top stacked cans, and the abutting unit reproduces the abutting constraint of the side wall and corners of the conveying vehicle to the cans through the hinged expansion and right-angle fixation of the abutting plate; and the arc-shaped pressing blocks generate self-adaptive deflection under the action of the elastic telescopic rods after being unlocked, and pressure direction change caused by friction between cans in the transportation process is simulated, so that a complex stress state in a real transportation environment is accurately restored under laboratory conditions, and detection data has more practical significance.

The invention discloses an intelligent ring with a physiological feature detection function and a physiological feature detection method. The smart ring comprises a pressure detector and an arithmetic processor. The pressure detector is used for detecting the value of pressure applied to the smart ring by the target object. The arithmetic processor is electrically connected with the pressure detector and used for comparing the pressure value with a preset condition and judging the behavior of the target object according to the comparison result of the pressure value and the preset condition so as to generate a corresponding operation instruction. The smart ring not only can utilize the pressure detector to correct the detection result of the light volume change tracing detector, but also can utilize the pressure detector to detect the degree of tightness, gestures or finger actions when a user wears the smart ring, and has diversified application changes.

The utility model discloses a polishing head structure and polishing head drive device, wherein the polishing head structure includes bearing piece, flexible film and N pressure adjustment subassembly, N > = 2, the bearing piece includes side plate and transverse plate, side plate encloses to form the hollow cavity, transverse plate cover is provided the hollow cavity one side, flexible film and side plate inner side wall fixed connection, and the pressure adjustment subassembly is provided with the pressure adjustment subassembly. The flexible film is provided with a first surface and a second surface which are oppositely arranged, and the first surface is suitable for being attached to a to-be-polished part; any pressure adjusting assembly comprises at least one piezoelectric actuator and at least one pressure detection piece, the piezoelectric actuators are distributed on the second surface, the pressure detection pieces are located between the piezoelectric actuators and the flexible film, and the pressure detection pieces are used for obtaining pressure information generated by the corresponding piezoelectric actuators on the flexible film. Through cooperative use of the piezoelectric actuator and the pressure detection piece, the accuracy of the value of the pressure applied to the flexible film is improved, so that the planarization effect of the wafer is improved.

The invention relates to the technical field of sensors, in particular to a high-sensitivity pressure-temperature dual-mode sensor and a preparation method thereof.The preparation method comprises the steps that a carbon nano tube is subjected to acid treatment and then reacts with a silane coupling agent KH550, and an aminated carbon nano tube is prepared; the method comprises the following steps: carrying out hydrothermal reaction on a phosphorus source and a graphene oxide aqueous solution to prepare phosphorus-doped reduced graphene oxide; the preparation method comprises the following steps: synthesizing Au-Ag heterojunction nano dispersion liquid through an Au nano seed method; mixing the three components and carrying out ultrasonic treatment to obtain mixed dispersion liquid; the preparation method comprises the following steps: modifying a PDMS substrate with KH560 and polyethylene glycol diamine to prepare a modified PDMS substrate; and coating the mixed dispersion liquid on a modified substrate to form a sensitive layer, and preparing an electrode to obtain the sensor. The aminated carbon nanotubes and the phosphorus-doped reduced graphene oxide construct a three-dimensional conductive network, so that high-sensitivity pressure detection is realized; the phosphorus-doped reduced graphene oxide and the Au-Ag heterojunction form a Schottky barrier, so that stable temperature sensing is realized; and the modified PDMS and the sensitive layer are strongly combined to improve the mechanical durability.

The utility model provides a tensile strength detection device for gabion box production. The tensile strength detection device for gabion box production comprises a detection table. The utility model relates to a tensile strength detection device for gabion box production, which is characterized in that two groups of mounting plates are symmetrically mounted on a detection table, mounting frames are mounted at the tops of the two groups of mounting plates, a gabion box can be fixedly mounted on the inner sides of the two groups of mounting frames, and two groups of screw rods are driven to rotate by a motor; the two sets of screw sleeves can drive the two sets of mounting plates to be far away from each other, so that the gabion net can be stretched, pressure is transmitted to a pressure detection device through springs installed on the side faces of second sliding blocks at the bottoms of the mounting plates, the tension borne by the gabion net can be known, and compared with a manual stretching mode, the tensile strength of the gabion net is greatly improved. When the device is used for stretching the gabion gabion net, the gabion gabion net does not shake, so that the detection result is more accurate.

The invention belongs to the technical field of biological liquid sample detection, and particularly relates to a liquid path system for sample suction quality detection and an anomaly detection process. A liquid path system for sample suction quality detection comprises a capacitance detection module, an injector, a pressure detection module, a cleaning valve, a cleaning pump, a degassing module and a water tank which are connected in sequence, and the capacitance detection module, the injector, the pressure detection module, the cleaning valve, the cleaning pump, the degassing module and the water tank are connected through pipelines. The method mainly solves the following problems: 1, the contradiction between the pressure monitoring range and the monitoring resolution; 2, when the sample is insufficient or bubbles are sucked, the difference between the suction pressure and the normal liquid suction pressure is small, so that misjudgment is easily caused; 3, misjudgment is easily caused by noise signal interference; 4, corresponding error monitoring mechanisms are lacked in other processes such as cleaning, sample adding and the like; and 5, monitoring is performed by excessively depending on a single mode, and the pressure is easily interfered in the testing process.

The invention discloses sorting equipment for computer hardware, which belongs to the technical direction of computer hardware processing, and comprises a computer hardware conveying table, three groups of cameras are arranged on the table top of the computer hardware conveying table in an array mode, and the three groups of cameras are respectively a first camera, a second camera and a third camera. A computer hardware shell is further placed on the computer hardware conveying table, a mounting hole is formed in the side face of the computer hardware conveying table, and a first camera, two sets of hardware clamping blocks and two sets of pressure sensors are used in cooperation; pressure detection of different forces can be carried out on corners of computer hardware shells of different sizes, defective products are automatically sorted out, manual collection by workers is not needed, the burden of the workers is relieved, defect detection operation can be independently carried out on the four corners of the computer hardware shells, and the working efficiency is improved. And after cracking, subsequent pressure detection operation does not need to be carried out, the products are directly sorted into defective products, energy consumption is reduced, and the effects of energy conservation and emission reduction are achieved.

The invention is a divisional application, and the application number of the original application is 2024117659062. The invention relates to the technical field of automobile spring manufacturing, in particular to a parking system spring bending forming device and a working method thereof. Comprising a clamping seat used for fixing an elastic piece body, the elastic piece body comprises a mounting plate and an extension plate, and a roller is pivoted to the front end of the extension plate; a forming limiting face is arranged below the position, corresponding to the bent position of the elastic piece body, of the clamping base, and the extending plate extends out of the forming limiting face. The material moving driving device is used for driving the clamping seat to move to a group of stations in sequence, and the stations comprise a bending station; and the bending module is right opposite to the bending station, the bending module comprises a bending execution module and an elastic piece performance detection module, the bending execution module comprises a bending driver and a bending punch, and the elastic piece performance detection module comprises a pressure detection probe and a probe driver. And the qualified rate of products can be improved.

The invention relates to the technical field of steel rail flaw detection, in particular to a flaw detection wheel detection platform. Comprising a flaw detection platform, a detection rail is arranged on the flaw detection platform in the X-axis direction, an X-axis displacement assembly, a Y-axis displacement assembly, a Z-axis displacement assembly, a horizontal transmission frame, a flaw detection mounting frame, a flaw detection mechanism, a cleaning mechanism and a touch display screen are fixedly installed on the flaw detection platform, and the horizontal transmission frame and the flaw detection mounting frame are installed on the X-axis displacement assembly. The flaw detection mechanism comprises an ultrasonic detection wheel, an eddy current sensor and a visual detector, a differential detection assembly and a pressure detection assembly are mounted on the ultrasonic detection wheel, and the pressure detection assembly comprises a ventilation pipeline, and a first pressure sensor, a pneumatic spring and a bearing seat which are arranged on two sides of the ultrasonic detection wheel. Omnibearing detection of internal, surface and near-surface defects of the steel rail is realized, a self-adaptive adjustment mechanism is provided, and the stability of the detection process is ensured; impurities on the surface of the steel rail can be cleaned comprehensively; and good surface conditions and coupling effects are provided for flaw detection.

The invention provides a safety belt control method and device, a vehicle and a storage medium, and the method comprises the steps: obtaining image information of a target passenger of the vehicle, seat pressure information and state information of the vehicle, carrying out the feature extraction of the image information, and obtaining the posture features of the target passenger, performing feature extraction on the seat pressure information to obtain a body weight feature of the target passenger, performing feature fusion on the posture feature and the body weight feature and state information of the vehicle to generate a state space of the target passenger feature, performing reinforcement learning on the state space by adopting a pre-trained learning model, outputting an action space corresponding to the target passenger, and according to the pre-tightening force and the pre-tightening amount in the action space, the safety belt is controlled to execute pre-tightening operation. According to the method, visual detection, pressure detection and multi-modal data fusion of the state information of the vehicle are utilized, accurate recognition of the characteristics of the passengers in the vehicle is achieved, dynamic mapping of the characteristics of the passengers and the pre-tightening parameters is established, and a personalized safety belt active pre-tightening constraint strategy is provided for different passengers.

The invention relates to an in-tunnel hydrogen pipeline accident chain blocking device and a hydrogen pipeline system and method.The in-tunnel hydrogen pipeline accident chain blocking device comprises an outer sleeve arranged on the periphery of a hydrogen pipeline, an interlayer space can be formed between the outer sleeve and the hydrogen pipeline, and the outer sleeve is provided with a pressure detection element to detect the pressure in the interlayer space; the pressure detection element is connected with a control system, the outer sleeve is connected with a protective gas inlet pipe and a gas exhaust pipe, the protective gas inlet pipe is connected with a protective gas source and provided with a purging control valve, the gas exhaust pipe is provided with an emptying valve, and the control valve and the emptying valve are connected with the control system. By means of the blocking device, the problems that in the prior art, response lags behind, and single pain points are handled are solved, and the safety of hydrogen energy conveying is remarkably improved.

The invention provides an automatic liquid supplementing system of a rack-mounted CDU, which is arranged in a rack and comprises a liquid supplementing pipeline, a secondary side circulation pipeline and a control module, a liquid supplementing water tank, a liquid supplementing pump and a liquid supplementing pipe are arranged on the liquid supplementing pipeline, a liquid level sensor for detecting the liquid level is arranged on the liquid supplementing water tank, a liquid outlet end of the liquid supplementing pump is connected with the secondary side circulation pipeline, and a liquid outlet end of the liquid supplementing pump is connected with the secondary side circulation pipeline. The liquid inlet end is connected with a liquid supplementing water tank or a liquid supplementing pipe, and the liquid supplementing pipe is connected with a liquid storage device arranged outside the rack through a quick connector corresponding to an internal liquid supplementing mode or an external liquid supplementing mode; a pressure detection mechanism is arranged on the secondary side circulation pipeline, and the control module can control automatic liquid supplementing or liquid supplementing stopping and the liquid supplementing mode according to the pressure value detected by the pressure detection mechanism and the liquid level value detected by the liquid level sensor. By monitoring the pressure and the liquid level of the cooling medium in real time, automatic switching between an external liquid supplementing mode and an internal liquid supplementing mode can be achieved, automatic liquid supplementing is achieved, and the system stability and the operation and maintenance efficiency are improved.

The invention relates to a testing device and a testing method for expansion force of a battery module. The testing device comprises a mounting assembly, a pressure detection assembly and a battery management unit. According to the invention, the pressure detection assembly is arranged between two adjacent battery packs, and the battery management unit synchronously collects the cycle charge-discharge times and the expansion force of the battery packs, so that the dynamic correlation analysis of the charge-discharge process and the expansion force is realized. Therefore, whether the expansion force of the battery module is within the bearing range or not is determined by analyzing the relationship between the expansion force and the charging and discharging times, and the cycle life of the battery module and the damage degree of the mounting assembly are reasonably judged. Moreover, the fault trend of the battery cell can be predicted according to the dynamic correlation analysis of the charging and discharging process and the expansion force, and measures can be taken in advance for maintenance or replacement, so that the occurrence of battery faults is reduced, and the service life of the battery is prolonged.