8844 results about "Pressure detection" patented technology

The invention relates to a touch screen pressure sensing method and device, equipment and a storage medium. The method comprises the following steps: acquiring capacitance signal data of the touch screen based on a first touch screen response parameter, and calculating to obtain an initial feature vector; establishing a pressure mapping model according to the initial feature vector, and generating pressure distribution data; performing feature extraction and fuzzy quantization to obtain a fusion feature vector; inputting the fusion feature vector into a Gaussian mixture model, and calculating to obtain a dynamic pressure threshold parameter; carrying out change rate, acceleration and jitter degree calculation on the dynamic pressure threshold parameter to obtain a time domain feature sequence; and performing comprehensive operation on the time domain feature sequence, the pressure value and the contact area to obtain a pressure influence factor, adjusting the first touch screen response parameter according to the pressure influence factor, and outputting a second touch screen response parameter. According to the method and the device, the continuity and the stability of pressure detection are improved, and finally more accurate and smoother touch experience is realized.

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 provides an automatic positioning and cleaning device for detecting the strength of a concrete test block, the automatic positioning and cleaning device comprises a base, the top of the base is fixedly provided with vertical support rods in a rectangular array, the tops of the four support rods are fixedly provided with a mounting plate, and the mounting plate is fixedly provided with a vertical electric cylinder; a piston rod of the electric cylinder is fixedly provided with a mounting block, and the bottom of the mounting block is provided with a pressure detection assembly. According to the device, the detection position of the concrete test block is automatically positioned, so that a worker does not need to manually place the concrete test block at the center of the top of the lower pressing block, and the device is relatively convenient; when concrete is unqualified and strength detection is carried out on the concrete, a moving mechanism is controlled to act to enable a connecting block to be far away from a fixing block and enable a cleaning shell to move to one side, far away from a supporting plate, of a lower pressing block, so that fragments at the top of the lower pressing block can be cleaned through two cleaning brushes, and workers do not need to manually clean the fragments; and the workload of workers is reduced.

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.

The invention discloses a hydraulic loading system for a semi-physical simulation platform of an excavator. The hydraulic loading system comprises a loading pump set, a confluence switching valve set, a movable arm linkage loading valve set, a bucket rod linkage loading valve set, a bucket linkage loading valve set, a rotation linkage loading valve set, a flow detection assembly, a pressure detection assembly, a multi-way valve and an excavator power unit. Oil inlet ports of all the multi-way valves provide oil inlet through an excavator power unit, flow of oil return ports of a movable arm link, a bucket rod link and a bucket link provides an oil source through a loading pump set, loading valve sets simulate loading load pressure, and the oil return amount and the oil return back pressure are controlled through speed regulating valves of all the loading valve sets. And the rotary unit controls the oil return quantity and simulates the rotary load through a rotary loading valve group. Multi-pump-set loading is adopted, the loading flow range is large, universality is high, an execution oil cylinder and an execution motor do not need to be installed and replaced, and operability is high; the oil inlet and return flow and pressure of the movable arm unit, the bucket rod unit and the bucket unit are independently loaded and are not limited by the area ratio of two cavities of an oil cylinder.

The invention discloses a silicon piezoresistive pressure sensor temperature compensation method and system based on IRIME-CNN-DD, relates to the technical field of pressure detection, and aims to solve the problem of low temperature compensation accuracy of an existing software compensation method. The method comprises the following steps: firstly, acquiring pressure data at different temperatures as a training data set; carrying out normalization processing on the training data set; the model parameters of the temperature compensation model are optimized through an improved rime algorithm, and the optimal model parameters are obtained; inputting the normalized training data set into a temperature compensation model, and training the temperature compensation model by using the optimal model parameters; and inputting the pressure data to be measured into the trained temperature compensation model for temperature compensation. The improved rime algorithm is used for optimization in the aspect of neural network parameter optimization, the robustness of the model is improved, local features of the temperature compensation data set are extracted through the convolutional neural network, and the sensitivity of the pressure sensor is further improved.

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 corrugated steel web composite beam performance detection device and method, and belongs to the technical field of composite beam performance detection.The corrugated steel web composite beam performance detection device comprises a base, a composite beam, a counter-force device and two placing frames installed on the base; the counter-force device comprises a plurality of mounting beams which are arranged at equal intervals and cross beams which are mounted on the inner sides of the mounting beams, and further comprises a moving mechanism, an adjusting mechanism and a detecting mechanism, and when the performance of the composite beam is detected, a first driving motor and a second driving motor on the same side are controlled by a controller to rotate, so that the performance of the composite beam is detected; the loading devices and the fixing pieces on the same side move synchronously, the two-way driving state of a vehicle in the actual situation is simulated, pressure detection on different positions of the two sides of the composite beam is achieved, and the authenticity of the detection result is improved.

The invention discloses a multi-stage gas inlet type hydrogen catalytic combustion system and method, and the system comprises a hydrogen supply part, an air supply part, a mixed gas pressure detection part, a mixed gas humidity detection part, a mixed gas hydrogen concentration detection part, a hydrogen catalytic combustion reactor, a branch gas supply part and a post-reaction hydrogen concentration detection part, the air supply component and the hydrogen supply component are connected in parallel and then connected to the hydrogen catalytic combustion reactor through a mixing pipeline, the hydrogen catalytic combustion reactor comprises multiple stages of catalytic reaction cavities which are sequentially distributed from the head end to the tail end, and each catalytic reaction cavity is connected with a branch air supply component. The branch gas supply components are further connected to the hydrogen supply component through branch pipelines, the gas inlet amount of each branch gas supply component is adjustable, the mixing pipeline is communicated with the branch gas supply components through branch connecting pipelines, and a mixed gas pressure detection component, a mixed gas humidity detection component and a mixed gas hydrogen concentration detection component are arranged on the mixing pipeline.

The invention discloses plastic pipe fitting air tightness detection equipment, and belongs to the technical field of plastic pipe fitting air tightness detection.The plastic pipe fitting air tightness detection equipment comprises a base, a pressurizing assembly is embedded in the upper end of the base, a pressure detector is arranged on the right side of the base, and two stand columns symmetrically distributed about the pressurizing assembly are fixedly connected to the upper end of the base; a connecting plate is slidably installed between the inner walls of the two stand columns, two symmetrically-distributed air cylinders are installed at the upper end of the connecting plate in an embedded mode, the telescopic ends of the bottoms of the air cylinders are fixedly connected with connecting blocks, and air pressure flow direction detection assemblies are installed at the lower ends of the connecting blocks. Then, the pressure detector can detect the pressure value in the pipe fitting in real time, the accuracy of airtightness value detection is guaranteed, meanwhile, under the condition that the inner wall and the outer wall of the pipe body are pressed, whether the pipe fitting has cracks or not can be detected, and therefore the yield of the pipe fitting is synchronously detected.

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 related technical field of corrugated pipe detection, and discloses a strength detection system for fuel gas stainless steel corrugated pipe production and a method thereof.The system comprises a detection box, a fixing plate is arranged in the detection box, a bottom plate is fixedly arranged on the upper side of the fixing plate, a fixing frame is fixedly arranged on the upper side of the bottom plate, and clamping assemblies are arranged on the two side walls of the fixing frame; a corrugated pipe is placed on the clamping assembly, a first plug and a second plug are installed at the two ends of the corrugated pipe, a hose is arranged on the first plug, and a pressure detector is installed on the second plug. The inner wall and the outer wall of the two ends of the corrugated pipe can be subjected to double clamping and fixing effects through the two pairs of first arc-shaped clamping plates and the two pairs of second arc-shaped clamping plates correspondingly; the multiple pairs of clamping grooves are in contact with the convex parts of the outer wall of the corrugated pipe, the multiple pairs of elastic convex blocks are in contact with the grooves in the inner wall of the corrugated pipe, the inner wall and the outer wall of the two ends of the corrugated pipe are subjected to double limiting and fixing effects by utilizing the shape characteristics of the corrugated pipe, and tensile strength detection on the corrugated pipe is facilitated.

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 relates to a control method and system for a high-precision grinding machine of an eccentric butterfly valve sealing pair and a terminal, and relates to the technical field of grinding machines. Selecting specification information of the eccentric butterfly valve is analyzed and determined according to the pressure detection information and the inclination detection value; selecting specification information based on the eccentric butterfly valve and calling a specification inclination demand value; calculating an inclination adjustment value; analyzing and determining inclination adjustment control information according to the inclination adjustment value; grinding path information is analyzed and determined according to the eccentric butterfly valve selection specification information and the inclination adjustment control information; grinding machining following control information corresponding to the grinding machining path information is determined according to the grinding machining path information; and combining the inclination adjustment control information with the grinding following control information to serve as grinding comprehensive control information, and outputting the grinding comprehensive control information to a high-precision grinding machine for grinding. The machining method has the effects that the overall machining efficiency of the sealing pair of the eccentric butterfly valve is improved, and 100% exchange is achieved.

The invention relates to the technical field of concrete detection, in particular to precast concrete strength detection equipment which comprises a detection table, the top end of the detection table is fixedly connected with a portal frame, the top end of the portal frame is provided with a hydraulic cylinder, and the driving end of the hydraulic cylinder is fixedly connected with a pressure detection plate. A positioning assembly is arranged in the detection table, a cleaning assembly is arranged in the placing groove, and an air blowing assembly is arranged on the upper portion of the cleaning assembly. Compared with the prior art, the protection assembly is arranged on the periphery of the containing groove, the protection assembly can be driven to be unfolded in the downward moving process of the pressure detection plate, a first rack can be used for driving a first gear to rotate while the side edges move towards the two sides, and then a turning plate can be driven to turn over, so that the side plates and the turning plate surround the periphery of the containing groove to form a baffle; and the protection effect is achieved, fragments which are broken and splashed in the detection process of the concrete prefabricated part can be blocked, and the safety in the detection process is improved.

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 relates to the technical field of puncture detection and discloses a puncture detection method and device for puncture-resistant film production, and the device mainly comprises a support frame, a base, a mounting plate, a pressure detection device, a puncture needle, a clamping seat, a fixing block and the like, and guide rods are fixedly connected to the left and right side walls of the clamping seat and located on the side edge of the fixing block; and a movable block is slidably connected to the guide rod in a sleeving mode, a rectangular groove is formed in the movable block, an electromagnetic block is fixedly arranged in the position, located in the middle of the bottom wall of the rectangular groove, of the interior of the movable block, and a movable plate is slidably connected to the interior of the rectangular groove. According to the puncture-resistant film flattening device, after a puncture-resistant film penetrates through a through groove in a clamping seat and is clamped by a fixed block and a sliding block, a movable block is pulled to slide on a guide rod, so that a movable plate in the movable block can abut against the puncture-resistant film, at the moment, the movable plate and the movable block synchronously move, and then the puncture-resistant film can be flattened through the moving movable plate; and the puncture-resistant film is prevented from wrinkling after being clamped, so that data of puncture-resistant detection is prevented from being influenced.

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 utility model relates to a high-voltage motor housing detection device. The high-voltage motor housing detection device comprises a detection bench. The top of the detection table is fixedly connected with a support frame; the top of the supporting frame is fixedly connected with a first driving electric cylinder. The output end of the first driving electric cylinder is fixedly connected with a connecting rod; the connecting rod penetrates through the side wall of the top of the supporting frame and extends into the supporting frame. The end part of the connecting rod is fixedly connected with a pressure plate; a pressure sensor is mounted at the top of the detection table; a pair of fixing plates are fixedly connected to the top of the detection table, during working, a switch of a first driving electric cylinder is turned on, the first driving electric cylinder pushes a pressure plate downwards, then the pressure plate extrudes a high-voltage motor shell and applies pressure to the high-voltage motor shell, and a pressure sensor located below the motor shell conducts pressure detection; the high-voltage motor shell is fixed through the clamping plates, so that the shell can be fixed during compression resistance detection, the problem that the shell slides due to pressure is reduced, and the detection precision and safety are improved.

The invention provides a robot collaborative sewing method and system based on speed look-ahead control. The system comprises an image detection module, a pressure detection module, sewing equipment, a controller and a mechanical arm. The image detection module acquires image information of the fabric in real time and transmits the image information to the controller; the controller processes the image information to generate the position of a pressing point at the tail end and a motion path, introduces speed look-ahead control, optimizes a speed extreme value according to the motion path, completes speed planning of the whole track, and interpolates the planned track to obtain an interpolated result; the controller sends expected force to the pressure detection module, and the pressure detection module outputs the pressing height; the mechanical arm presses the height to execute the action to the fabric based on the interpolation result; the controller sends a control signal to the sewing equipment, and the sewing equipment carries out cloth feeding and sewing; the speed of the sewing equipment is matched with that of the mechanical arm, and cooperative sewing is carried out.

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 relates to the field of compressed air energy storage and underground space structures, in particular to a high-pressure air storage underground cavern plugging structure and an arrangement structure.The outer side of the middle of a plugging body is connected with an anti-sliding protruding part, and the anti-sliding protruding part can reduce the possibility of sliding between the plugging structure and surrounding rock; the anti-sliding plugging capacity of the plugging structure is improved, the length of the plugging structure can be effectively reduced, the construction cost is reduced, and the construction period is shortened; moreover, a controller, a first pressure detection sensor and an electromagnetic air pressure valve are further arranged, during maintenance, a maintainer controls the electromagnetic air pressure valve and the inner side sealing door to be opened and closed through the controller, and pressure reduction and exhaust are conducted through a pressure reduction section till the gas pressure in the high-pressure gas storage chamber and the gas pressure in the maintenance channel are balanced; the pressure difference between the maintenance channel and the high-pressure gas storage cavern is effectively controlled, the possibility of damage to maintenance personnel and equipment is reduced, and the maintenance safety is remarkably 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.

The invention relates to the technical field of earthquake detection, and discloses a constant-pressure online detection device and method for the concentration and flow of gas escaped from a hot spring, and the device comprises a gas collecting hood, a buffer bottle, a gas flow detector, a constant-volume gas storage chamber, a constant-pressure detection valve, an online gas detector and a central controller; the gas collecting hood is arranged in a corresponding area of hot spring escape gas and collects the hot spring escape gas; the gas inlet end of the surge flask is communicated with the gas collecting hood through a pipeline, and the gas outlet end is communicated with the gas inlet end of the constant-volume gas storage chamber through a gas flow detector; the constant-volume gas storage chamber is communicated with an on-line gas detector pipeline through a constant-pressure detection valve, and when the air pressure value of hot spring escape gas stored in the constant-volume gas storage chamber is larger than a preset air pressure threshold value, the hot spring escape gas enters the on-line gas detector through the constant-pressure detection valve; the on-line gas detector is used for detecting gas components and concentration of gas escaped from the hot spring and sending detection data to the central controller.