4408 results about "Pressure detection" patented technology

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 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 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.

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 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 discloses a mobile phone screen pressure detection device and detection process, and relates to the technical field of mobile phone screen detection, the device comprises a cleaning module, a multi-point simulation type pressure loading module, a support positioning module and a control processing module; the cleaning module is used for performing multi-stage cleaning on the surface of the screen before the pressure test; the loading module comprises a plurality of loading units capable of implementing independent and controllable pressure loading on a plurality of areas of a mobile phone screen; the supporting and positioning module is used for accurately fixing a to-be-tested mobile phone screen, and the control processing module is used for controlling execution of a cleaning and testing process and realizing abnormity identification and data acquisition; the method can effectively avoid the pressure test error crack caused by sundries and particles on the surface of the test screen, improves the accuracy and automation degree of the screen pressure detection, and is suitable for the mobile phone screen factory detection or the screen pressure test in the research and development process. The technical problem that an existing screen pressure test is low in accuracy is solved.

The invention provides a seat adjusting method and device, a seat and a vehicle, the adjusting method comprises the steps that multiple first pressure values detected by multiple headrest pressure detection units are obtained, and the multiple first pressure values comprise at least one first target pressure value larger than a first threshold value; determining the waist height of the user according to the position information of the headrest pressure detection unit corresponding to the first target pressure value; and adjusting the height of a waist support of the seat according to the waist height. The precision and accuracy of waist support adjustment can be improved, and the riding comfort of the seat is improved.

The invention relates to the technical field of valve detection, in particular to a valve with a leakage detection function, which comprises a valve body, the two sides of the valve body are respectively connected with the end parts of an input pipe and an output pipe, a valve core is rotatably sealed in the valve body, a through hole is formed in the middle of the valve core in a penetrating manner, and a detection hole is formed in the bottom of the through hole in a penetrating manner; the bottom of the valve body is in threaded connection with the input end of the pressure gauge through a detection pipe, a second valve element is rotationally sealed in the detection pipe, a second detection hole of the second valve element is perpendicular to the detection hole, and the valve body is in threaded connection with the input end of the pressure gauge through the detection pipe. And the accuracy of detecting the pressure in the pipeline structure by the pressure gauge is also improved.

The invention discloses high-pressure fuel gas pressure regulating equipment in the technical field of fuel gas pressure regulating equipment, which comprises a valve body, and a valve rod, a reset spring and a gas inlet box which are arranged on the valve body, a valve seat and a diaphragm are arranged on the valve rod, the gas inlet box is communicated with a gas outlet of the valve body through a guide pipe, and a detection assembly is arranged in the gas inlet box; the detection assembly comprises an air pressure detection piece and a displacement detection piece, and a warning indicator is arranged on the air inlet box and used for giving an alarm when the air pressure detection piece detects that the air pressure below an inner cavity of the air inlet box is lower than a threshold value and the displacement detection piece does not detect that the valve rod moves. The high-pressure gas pressure regulating equipment is detected through the detection assembly, when the air pressure detection piece detects that the air pressure below the inner cavity of the gas inlet box is lower than a threshold value and the displacement detection piece does not detect that the valve rod moves, the warning indicator gives an alarm to remind a user, so that problems can be found in time, further deterioration of the faults is avoided, and the service life of the user is prolonged. And the probability of potential safety hazards is reduced.

The utility model relates to the technical field of detection equipment, in particular to air tightness detection equipment of an FTU box body. Comprising a base, four guide supports arranged on the base, a fixing seat arranged on the guide supports, a sealing cover arranged on the base, a telescopic air cylinder arranged on the fixing seat, a vacuum opening formed in the base, an air pressure detection hole formed in the base and a sealing clamping groove formed in the upper end face of the base. The sealing piece is arranged on the upper end face of the base and comprises a sealing block fixedly arranged on the base, a deformation opening formed in the middle of the upper end of the sealing block, two sealing end bodies formed on the sealing block and two concave open grooves formed in the left end face and the right end face of the sealing block. And the other block body also can provide a sealing effect, so that a tiny leakage gap is not easy to form on a sealing interface, and the measurement result of the air tightness is not easy to influence.

The invention relates to the technical field of sensors, and provides a flexible pressure sensor and a pressure-sensitive fabric, the flexible pressure sensor comprises the pressure-sensitive fabric, the pressure-sensitive fabric is provided with a pressure detection position for detecting a pressure signal, and the pressure-sensitive fabric is formed by weaving a composite conductive filament and a first non-conductive filament, the composite conductive wire is obtained by doubling a conductive wire and a second non-conductive wire, and the conductive wire is prepared from a conductive material and a base material; the processor is connected with the pressure detection positions and used for processing the pressure signals of the pressure detection positions and outputting pressure distribution information on the pressure-sensitive fabric according to the pressure signals corresponding to the pressure detection positions. According to the pressure sensor provided by the embodiment of the invention, the pressure-sensitive fabric has the characteristics of bending resistance, impact resistance and electric conductivity which is not easily influenced by the environment, and the consistency of the pressure-sensitive fabric is improved, so that the precision of the pressure sensor in various environments is improved.

The invention discloses a threading pipe sealing air pressure detection device, and belongs to the technical field of threading pipe production. A threading pipe sealing air pressure detection device comprises an operation table, first rectangular sliding grooves are formed in the surfaces of the two sides of the upper end of the operation table, a moving assembly is connected into an inner cavity of each first rectangular sliding groove, and one end of each moving assembly is connected with an air pressure pump; the frame body connecting assembly adopts a double annular groove structure composed of a first annular connecting block and a second annular connecting block, the inner diameter and the outer diameter of the frame body connecting assembly are precisely matched with the end of the threading pipe, the arc-shaped guiding design is matched, the butt joint sealing performance is guaranteed, the pipe body is prevented from being scratched, and through the linkage feedback design of the air pressure jacking assembly and the polishing assembly, the polishing efficiency is improved. The air pressure in the pipe pushes the sealing block to ascend and descend, so that the sealing performance is judged, and compared with manual observation of a pressure gauge, tiny leakage points of the threading pipe can be accurately recognized, missing detection and false detection are avoided, and the detection precision is further improved.

The invention is suitable for the technical field of pipeline detection, and provides a hydraulic engineering pipeline detection device which comprises a detection table, a sliding frame and a driving frame, the driving frame is fixedly connected to the detection table, the sliding frame is in sliding fit with the detection table, and the hydraulic engineering pipeline detection device further comprises a pressure applying assembly which is arranged on the driving frame and used for conducting pressure detection on a pipeline, the pressure applying assembly comprises a sliding table slidably connected into the driving frame, a motor is installed on the wall face of the sliding table, the output end of the motor is fixedly connected with a gear shaft, and the side, away from the motor, of the gear shaft is fixedly connected with a first supporting plate. The device has the beneficial effects that through the change of the meshing state of the movable toothed pipe and the driven gear and the change of the limiting state of the toothed plate in the first supporting plate by the clamping block, the detection effects of various different stress directions can be switched and achieved according to the detection requirements when the pressure applying assembly applies pressure to the pipeline, and the detection efficiency is improved. And the equipment can realize various different pressure applying functions through a simple mechanical structure.

The invention discloses a photovoltaic curtain wall pressure resistance detection device and detection method, and relates to the related field of photovoltaic curtain wall detection. According to the invention, through the arrangement of the limiting strips, stable positioning of the photovoltaic curtain wall before testing is ensured, and testing errors caused by offset are avoided; the displacement mechanism is matched with the pressure detection device, accurate pressing and real-time detection of test pressure are achieved, so that the reliability of pressure resistance data is guaranteed, when the curtain wall is broken, the supporting plate can be rapidly overturned and in butt joint with a collection station under linkage of transmission structures such as a driving motor, a synchronous belt and a pull arm, the broken curtain wall is smoothly poured, and the production efficiency is improved. Meanwhile, the supporting plate is automatically reset under the action of the air spring, residual fragments are removed in cooperation with external blowing equipment, secondary pollution and clamping stagnation are avoided, and the cleanliness of the testing environment is guaranteed.

The invention relates to the technical field of flexible sensors, in particular to a gradient hierarchical porous structure flexible piezoresistive sensor and a preparation method thereof. The sensor is of a laminated structure and comprises an upper flexible packaging protection layer, a lower flexible packaging protection layer, a conductive fabric electrode and a middle piezoresistive sensing layer, and a limiting frame is arranged on the periphery of the sensor. The sensing layer is prepared by adopting a 3D printing ink direct writing technology, and adopted printing slurry takes silicone rubber as a matrix and is uniformly mixed with expanded conductive microspheres and conductive filler. The printing wires are stacked in order to form a macroscopic gradient porous network structure; after the expanded microspheres are subjected to in-situ foaming, micro closed pores are formed in the material, and a rough microstructure is constructed on the surface of the wire material, so that hierarchical multi-scale regulation and control of a conductive network are realized cooperatively, contact sites are increased remarkably, and the sensitivity of the sensor is further improved effectively. The flexible piezoresistive sensor prepared by the invention has the advantages of high sensitivity, wide pressure detection range and high linearity, and has the commercial values of simple preparation process, high repeatability, lower cost and the like.

The invention discloses an intelligent cable traction system and a cable traction laying control method. A cable traction machine can electrically pull a traction rope and detect traction force in real time. And when the traction force exceeds a preset traction high threshold value, the cable winding and unwinding mechanism can be controlled to reduce the winding speed, so that the traction rope wound on the traction wheel is properly loosened, and the traction force is gradually recovered to be stable. And meanwhile, the cable winding and unwinding mechanism automatically adjusts the winding speed according to extrusion force data fed back by the pressure detection assembly, and it is ensured that the extrusion force is maintained within the preset parameter range. According to the embodiment of the invention, the extrusion force and the traction force are creatively combined, the winding speed of the cable winding and unwinding mechanism is comprehensively regulated and controlled, and the intelligent cable traction system is always in a reasonable working interval during traction and winding of the traction rope through an intelligent control mode, so that automatic traction and winding of the traction rope such as a steel wire rope are realized; therefore, the automatic traction operation of the cable connected with the traction rope is completed, and the intelligence and safety of cable laying construction are improved.

The embodiment of the invention provides an electronic lead sealing strip and a detection method based on the electronic lead sealing strip, the electronic lead sealing strip comprises a shell, a first lock cylinder, a second lock cylinder, a pressure detection module and a control module, the first lock cylinder, the second lock cylinder, the pressure detection module and the control module are arranged in the shell, and the first lock cylinder and the second lock cylinder are arranged in parallel; a pressure detection module is arranged at the vertical position of the first lock cylinder, and the first lock cylinder is further connected with a connecting line. The control module is connected with the first lock cylinder, the second lock cylinder and the pressure detection module. And under the condition that the connecting wire is inserted into the second lock cylinder and is stably installed, the control module determines the connecting state of the connecting wire by judging a loop of the first lock cylinder and the second lock cylinder and / or a pressure value collected by the pressure detection module. Whether the electronic lead sealing strip is cut off or not is judged according to the detected pressure value, and the reliability of the electronic lead sealing strip is improved.

The invention belongs to the technical field of bedding, and discloses a mattress supporting performance self-adaptive adjusting method based on pressure comfort and a mattress, the method is applied to a mattress provided with a pressure detection assembly and an air pressure adjusting assembly, and the method comprises the following steps: obtaining pressure index data and sleep quality data of each partition of a body; calculating a pressure comfort comprehensive value of each partition of the body based on each pressure index data of each partition of the body; based on the intermediary factors influencing the sleep quality, constructing a correlation model of the pressure comfort comprehensive value of each partition of the body and the sleep quality; real-time data of pressure indexes of all the partitions of the body are obtained, the real-time sleep quality is calculated through the correlation model, and based on the real-time sleep quality and a preset sleep quality threshold value, the air pressure of the mattress areas corresponding to all the partitions of the body is independently adjusted at the same time. The overall comfort is defined by calculating the comprehensive value of the pressure comfort of each partition of the body, the overall dynamic balance adjustment of the supporting performance of the mattress is realized by utilizing a correlation model, and the overall supporting performance unbalance caused by local adjustment is avoided.

The invention relates to the technical field of mine water treatment, in particular to a mine water filtering device.According to the mine water filtering device, an ultrafiltration membrane assembly is arranged in a membrane pool to filter mine water, a pressure detector is arranged at a liquid outlet to monitor the water pressure in real time, and the pressure detector transmits real-time data to a controller; the controller is used for judging whether the water pressure entering the clean water tank meets the water production requirement or not, and automatically controlling the starting and stopping of each electrical device according to the judgment result, so that the spraying pump and the moving assembly are started in time when the membrane pollution problem occurs, and the clean water in the clean water tank is pumped to the spray head through the water production pipeline to clean the ultrafiltration membrane assembly; and different positions of the ultrafiltration membrane assembly are cleaned by moving the spray head through the moving assembly, so that pollutants on the surface of the ultrafiltration membrane can be quickly and thoroughly removed, and the water production efficiency is ensured. And moreover, the device does not need to add a coagulant to carry out flocculation and sedimentation treatment on the mine water, so that potential risks of drug residues on subsequent recycled water quality are avoided.

The invention relates to the technical field of material conveying equipment, in particular to a livestock slaughtering automatic feeding device and a feeding method thereof.The livestock slaughtering automatic feeding device comprises a feeding table, the feeding table is provided with a conveying belt with a cutting gap, side plates and limiting frames are arranged on the two sides of the feeding table, and a cutting knife is arranged between the limiting frames; gravity detection assemblies (including pressure detection tables, detection supporting plates and the like) are symmetrically arranged in the feeding table, limiting assemblies (including clamping frames, driving shafts, auxiliary driving belts and the like) are arranged on the inner sides of the side plates, and driving assemblies (including driving equipment, pressure sensors and the like) electrically connected with the gravity detection assemblies are arranged on the outer sides of the side plates; a flow dividing box with a spray head and a cleaning rod is arranged below the feeding table, cleaning of the conveying belt, intermittent discharging of materials to the conveying belt, triggering and limiting when the materials are conveyed to a detection area, starting of weight detection after a pressure sensor reaches the standard, adjustment of the positions of the materials through a driving assembly to guarantee equal-weight cutting, and resetting of a system after completion are achieved. Accurate slitting is achieved, weight deviation is reduced, and production efficiency and product standardization are improved.

The present invention belongs to the field of reactor detection technology, and in particular relates to a reactor pressure resistance detection device, comprising a base and a mounting platform installed on the end face of the base, the mounting platform being used to install the reactor, a control cabinet being fixedly installed on one side of the end face of the base, and further comprising: two detection seats, the two detection seats being respectively arranged on both sides above the base, and the side walls of the two detection seats facing each other are provided with a plurality of U-shaped grooves, the base being provided with two driving mechanisms, the two driving mechanisms being used to drive the two detection seats to move toward each other, the interiors of the two detection seats being provided with a plurality of U-shaped cavities, and the plurality of U-shaped cavities on the same side being interconnected. The present invention can make the compressive strength test results of the reactor insulation sleeve more in line with reality, and can pre-screen points where strength defects may exist, thereby improving the representativeness and detection efficiency of the test results, while also being able to expose defects such as potential cracks before detection, thereby reducing the possibility of missing defects.

The invention discloses a transmission tower foundation extrusion monitoring method and a soil pressure monitoring pile, and the method comprises the steps: setting a maximum displacement allowable value of a tower foundation pile, carrying out the initial layout of the positions of a soil displacement detection pile and a soil pressure detection pile according to the stacking non-uniformity, and calculating a pressure attenuation coefficient and a displacement attenuation coefficient; performing layout optimization according to the pressure attenuation coefficient and the displacement attenuation coefficient, calculating an absolute value index, a change rate index, a correlation index and a direction difference index of soil pressure and displacement, and setting grading early warning judgment conditions of each index by combining a pole tower foundation pile maximum displacement allowable value and a pile side maximum soil pressure allowable value; according to the invention, the early warning response time for local and sudden loading is shortened, and the false alarm rate is reduced.

The invention relates to a monitoring, prevention and control system for filling and pipe plugging, which comprises a ground integrated console, a distributed optical fiber acoustic monitoring system, a pressure detection mechanism and a discharge mechanism, and is characterized in that the ground integrated console is electrically connected with the distributed optical fiber acoustic monitoring system, the pressure detection mechanism and the discharge mechanism through a communication system, and data connection is established; at least one distributed optical fiber acoustic monitoring system and at least one pressure detection mechanism are connected with the pipe wall of the filling pipeline and distributed in the axis direction of the filling pipeline, and the discharging mechanism is connected with the filling pipeline. The use method comprises the following four steps: optical fiber laying, system operation flow, pipe blockage judgment and active prevention and control, and mechanism maintenance. Precise positioning of the pipe blocking position can be achieved, the pipe blocking area is determined in combination with the acoustic signal spatio-temporal evolution law, active regulation and control of filling and pipe blocking are achieved through the pressure release valve and the vibration ring, the problem of response lag caused by traditional manual troubleshooting or single-parameter triggering is solved, and the timeliness of field emergency disposal is improved.

The invention discloses an electrical control device for high-pressure protection in a hydraulic control system, which relates to the technical field of hydraulic control and comprises a high-pressure detection module for monitoring pressure data of the hydraulic system in real time and transmitting the pressure data to a control processing core through an analog quantity input module. Two-channel independent control logic is adopted through the redundancy protection unit, even if a single loop breaks down, the other loop can still independently execute a safety instruction, the risk of single-point failure is eradicated, meanwhile, the intelligent control unit achieves advanced and accurate pressure adjustment and trend suppression through a high-frequency-response electro-hydraulic servo valve and a proportional valve and depending on bus communication, and the safety performance of the system is improved. The high-voltage risk is eliminated in the bud, the leap from passive response to active protection is achieved, high system integration and intelligent management are achieved through the intelligent valve terminal, remote monitoring and diagnosis are supported while wiring is simplified, and maintainability is enhanced.

A working machine includes: at least one support member connectable to a work attachment to do work by making contact with an object to be contacted; at least one hydraulic cylinder to move the work attachment connected to the at least one support member, a rod-side pressure detector to detect a rod-side hydraulic pressure of hydraulic fluid in communication with a rod-side fluid chamber of the at least one hydraulic cylinder; a bottom-side pressure detector to detect a bottom-side hydraulic pressure of hydraulic fluid in communication with a bottom-side fluid chamber of the at least one hydraulic cylinder; and a controller to calculate a relationship in pressure between the rod-side hydraulic pressure and the bottom-side hydraulic pressure and evaluate, based on the calculated relationship in pressure, a contact state which is a state of contact of the work attachment with the object.

The utility model discloses a multi-hole type vacuum chuck and numerical control machining equipment, the multi-hole type vacuum chuck comprises a chuck body and at least one negative pressure detection assembly, the surface of the chuck body is provided with a plurality of suction holes, the suction holes are used for sucking workpieces, and the negative pressure detection assembly is connected to the chuck body. The negative pressure detection assembly is used for detecting the adsorption state when the suction hole adsorbs the workpiece. The negative pressure detection assembly is used for detecting the negative pressure generated when the suction holes adsorb the workpieces, it can be ensured that the porous vacuum suction cup normally works in numerical control machining equipment, the stable adsorption performance is maintained, and the reliability and safety of the porous vacuum suction cup are improved.

The invention discloses a pressure detection system, and relates to the technical field of intelligent wearing, and the pressure detection system comprises 1) a flexible substrate layer which is used for fitting skin and sensing external tiny pressure changes; the micro-column array layer is composed of a plurality of micro-column structures and used for amplifying and conducting the pressure change sensed by the flexible substrate layer; the flexible gel sensing layer is used for receiving the pressure transmitted by the micro-column array layer and generating an electric signal; 4) a packaging layer; an interdigital electrode layer is arranged in the flexible gel sensing layer, an electric signal of the flexible gel sensing layer changes along with the change of external pressure, and the detection of a pressure electric signal is realized through the interdigital electrode layer. By means of the design, high-sensitivity response to tiny pressure changes can be achieved, micro-pressure signals are remarkably amplified, meanwhile, the problem of hysteresis effect generally existing in traditional silica gel or metal film materials is solved, and therefore the response speed of the sensor is greatly increased.

The invention discloses a self-adaptive apple maturity lossless picking flexible claw and a picking method. The device comprises a base assembly, and a visual recognition module, a flexible clamping jaw assembly, a distributed pressure sensing module, a transmission execution module and a control unit are integrated on the base assembly. And the visual module adopts a depth camera and a YOLO11n model, judges the maturity grade in real time based on the apple red area proportion and is matched with the corresponding grabbing threshold force. The pressure sensing module is a thin film pressure sensor, and multi-point pressure feedback is achieved through a plurality of pressure detection points. The transmission module adopts a single motor to drive a lead screw nut lifting table, opening and closing of clamping jaws are synchronously controlled, the structure is light and simple, and cost is low. The picking method follows the process of recognition, matching, force control and picking, a cutter is not needed, lossless and high-success-rate self-adaptive picking is achieved, the problem of damage or failure caused by traditional fixed force control is effectively solved, the method is suitable for dense orchards, and the intelligent and lossless levels of apple picking are improved. The control unit is low in response delay and small in overshoot, and it is ensured that the grabbing force is accurately matched with the fruit state.