220 results about "Cavity pressure" patented technology

The invention relates to the technical field of parameter optimization, in particular to a plastic mold forming parameter optimization method and system based on big data, and the method comprises the following steps: collecting pressure data, calculating an acceleration sequence, recognizing a peak window, matching a pressure-temperature ratio, and building a combined cluster to obtain an optimization result set. According to the method, a speed increasing sequence is constructed based on the die cavity pressure change rate, a high-dynamic section is screened through a peak value ratio, automatic identification of an effective forming section is achieved in combination with continuous ratio stability judgment, forming pressure, die temperature and a cooling time sequence are collected to construct a parameter combination sequence, trend consistency is compared, and available combinations are screened; the parameter acquisition granularity, the process identification precision and the parameter group suitability are obviously improved, the problems of subjective interference and error accumulation in the parameter configuration process are effectively avoided, the objective quantitative analysis capability of the forming process state is enhanced, and the accuracy of the forming process state is improved. And the plastic mold forming process stability and the parameter configuration efficiency are improved.

The invention discloses a vacuum cavity pressure maintaining test and leak rate rapid estimation method and system, and the method comprises the steps: achieving the test preparation of multiple sections through a public metering manifold and a multi-way isolation valve, and building a section volume database; the pressure and temperature data are synchronously collected in a fixed sampling period by exhausting air to preset pressure and isolating a pump end; obtaining an equivalent pressure change rate through temperature normalization and deflation baseline deduction in combination with filtering and regression algorithms, and performing conversion to obtain a standardized leak rate; step-by-step detection is carried out on each functional section of the cavity through a segmented bipartite isolation strategy and volume correction, and rapid positioning of a suspicious leakage section is realized; through double-threshold determination of an early warning threshold and an unqualified threshold, a detection report is automatically generated and written into a historical database, and a detection-determination-maintenance closed loop is formed. The method can improve the precision of leak rate detection, and is suitable for vacuum coating equipment, semiconductor process equipment and industrial vacuum treatment devices.

A coating die head includes a die head body, a cavity pressure adjusting block and a regulating assembly. A material cavity is arranged in the die head body, and a first wall surface of the material cavity has a through hole. The cavity pressure adjusting block is arranged in the material cavity, the cavity pressure adjusting block comprises a cavity that is located inside the cavity pressure adjusting block, the cavity pressure adjusting block is configured to change a volume with a pressure change of the cavity, one side wall surface of the cavity pressure adjusting block facing towards the first wall surface is a second wall surface, and the second wall surface is fitted with the first wall surface and surrounds a region where the through hole is located. The coating die head may be integral to a coating equipment.

The invention relates to the technical field of injection molding control, in particular to a bumper foam molding deformation control method based on artificial intelligence, which comprises the following steps: judging whether initial injection pressure exceeds a normal range required for inhibiting foaming, and adopting subsection control or predicting whether the fluidity of a foaming melt has an out-of-control risk; according to the out-of-control risk value, a corresponding adjusting strategy is adopted in combination with the weight coefficients corresponding to the multiple sprues, and the injection molding adjusting speed is obtained or the initial mold temperature is reduced; according to the injection molding speed and the weight coefficient of the multiple sprues, calculating and predicting whether the tail end of the cavity is subjected to material shortage and uneven foaming, and reflecting whether the adjustment degree of the initial injection molding speed and the mold temperature is reasonable or not through the material shortage risk; and determining the foaming degree of the foaming melt in the inspection mold according to the material shortage risk, or reducing the adjustment amplitude of the initial injection molding speed or the initial mold temperature and adjusting the actual cavity pressure in the mold to compensate the adjustment amplitude. The performance of the bumper is improved through the foaming forming technology.

The invention provides a compressor intelligent control method and system based on dynamic pressure relief and a storage medium, and the method comprises the steps: firstly, capturing the multi-physical field coupling characteristics of a compressor in a shutdown state in real time by deploying a pressure, temperature, vibration and current four-dimensional sensing network; secondly, based on a preset pressure entropy model, fusing the pressure fluctuation intensity, the temperature anomaly index, the high-frequency vibration factor and the current attenuation coefficient to quantitatively evaluate a pressure entropy value, and triggering a three-stage pressure relief mode based on the pressure entropy value; then, based on the deviation between the cavity pressure and the target pressure, pressure relief parameters are dynamically adjusted, and stable pressure transition is achieved; and finally, collecting full-link data of pressure relief operation, and dynamically optimizing pressure entropy model parameters based on reinforcement learning, so that the system continuously adapts to equipment aging and working condition changes. Through dynamic closed-loop adjustment, pressure relief energy consumption waste and equipment loss are reduced, and the stability of the pressure relief process is improved.

The invention relates to the technical field of process control, in particular to an injection molding process optimization method and device, computer equipment and a storage medium, and the method comprises the following steps: obtaining stress signals of four tie bars of an injection molding machine, calculating a total mold locking force, and preprocessing the stress signals through temperature compensation and moving average filtering; real-time mold cavity pressure is calculated based on a mold filling stage linear model, a pressure maintaining stage quadratic function model and a cooling stage exponential attenuation model triggered by an injection molding machine control signal; generating a standard curve template with a confidence interval according to the characteristic parameters of the qualified sample, and dynamically updating the standard curve template; and comparing the current pressure curve with a standard template output quality judgment result in real time, and triggering automatic parameter adjustment to form closed-loop control. The device and the method have the effect of solving the problems of high cost, poor compatibility and difficulty in maintenance when the pressure of the die cavity is directly measured.

The invention relates to the technical field of intelligent manufacturing equipment, in particular to a mold cavity pressure homogenization precision control method and system based on a two-way closed loop, and the method comprises the following steps: based on an injection mold cavity, completing the sudden change recognition and compensation of pressure data, the dynamic switching of a master closed loop path and a slave closed loop path, and the discrimination of the synchronous adjustment state of a driver in sequence; and setting a gain adjustment action in stages, and implementing closed-loop correction according to a feedback trend to obtain a dynamic offset correction amount. According to the method, continuous correction of the pressure state is achieved by correlating multi-point pressure collection, judging the pressure sudden change position in the cavity in real time and dynamically compensating local abnormal data, the motion state of the propelling device is combined, pressure adjusting strategies are switched according to different process stages, a linkage gain adjusting and controlling mode is adopted, dynamic adjustment of pressure distribution keeps high collaboration, and the control effect is good. Periodic trend closed-loop correction is carried out on feedback signals in the driving response stage, and forming errors and product defects caused by abnormal local pressure are remarkably reduced.

The invention relates to the technical field of composite material forming, in particular to a pultrusion process and system based on resin-based constant-pressure control, and the pultrusion process comprises the following steps: fiber guiding gum dipping: selecting a normal-pressure mode or a closed mode; collecting die cavity pressure data and pultrusion force data in real time; the pressure data of the mold cavity are compared with a set interval, and the glue injection flow and / or the pultrusion speed are / is adjusted; and comparing pultrusion data with a set interval, reversely optimizing the pressure of the mold cavity based on tension feedback, and reducing the stress of the product, and the method has the following beneficial effects that the resin supply or pultrusion speed is adjusted in real time and the pressure of the mold cavity is kept constant by combining a dual-mode resin impregnation system (normal-pressure impregnation / closed glue injection) with a mold cavity pressure closed-loop control technology. A pressure-tension cooperative control model is innovatively provided, and internal stress distribution of the product is optimized. The embodiment verifies that the pultrusion force can be reduced by more than 15%, the bubble rate can be reduced by more than 30%, and the mechanical property and the production stability of the product can be obviously improved.

The invention discloses a new media integrated interactive display device, which belongs to a new media industrial display device, and comprises an interactive module and a convex groove body, and a middle plate assembly is arranged in an inner cavity of the convex groove body; the middle plate assembly comprises a middle plate body integrally formed with the convex groove body, and a plurality of rows of water discharging thin openings are evenly formed in the top of the middle plate body. An intra-cavity pressure-bearing seat is arranged in the hollow cavity in a sealed and sliding mode, and a combination unit communicated with the hollow cavity is arranged in the preassembling opening. After the electric water pump pumps a water source into the liquid cavity, the water source continuously flows out from the water outlet thin opening, a layer of lubricating water film can be formed between the scraper blade and the middle plate assembly, and the frictional contact condition between coal and the surface of the groove middle plate body 201 is simulated through the water film flowing on the surface of the middle plate body 201 when the reversed loader runs. The authenticity and immersion of experiences of participants are enhanced, and in addition, the middle plate assembly can sense the abrasion depth of the middle plate assembly in the running process of the reversed loader.

The invention provides a plastic mold intelligent optimization system and method based on digital twinning. The method comprises the steps that a digital twinning model integrating mold cavity geometry and an injection molding machine hydraulic device is established; time sequence data of cavity pressure and screw movement in the filling and pressure maintaining stage are used as input, and PVT characteristic parameters and melt leading edge viscosity attenuation coefficients of the polymer melt in the current production period are identified and updated on line; on the basis of the PVT characteristic parameters and the melt front edge viscosity attenuation coefficient, predicting and generating a dwell pressure curve required for achieving a predefined cavity pressure balance curve in the next period; in the pressure maintaining stage of the next production cycle, the amplitude of the pressure maintaining pressure curve is adjusted according to the dynamic deviation of the cavity pressure detected in real time and the cavity pressure balance curve, a compensation control signal is output to an injection molding machine executing mechanism, and self-adaptive closed-loop adjustment of the cavity pressure is achieved. Based on the above scheme, feedforward optimization based on material characteristics and feedback control of AI disturbance can be realized.

The invention relates to a quantitative measurement system and method for mechanical properties of soft tissue and electronic equipment, and the system is characterized in that a pre-negative pressure cavity is in preset negative pressure, and a direct negative pressure cavity is in sealed contact with the measured soft tissue; the first control part loads and maintains target negative pressure to the direct negative pressure chamber according to a preset time sequence; the second control piece is used for releasing pressure and resetting the direct negative pressure chamber; the pressure acquisition part acquires the actual pressure in the cavity; the displacement acquisition part acquires the displacement of the tested soft tissue at the opening of the direct negative pressure chamber; the state detection piece detects the actual state between the direct negative pressure chamber and the detected soft tissue; the control part generates a control instruction and generates soft tissue mechanical property quantitative measurement data in combination with actual intracavity pressure and displacement. Therefore, the problems of high maintenance cost, strong operation dependence, poor repeatability, difficulty in programming scheduling of key test conditions, poor flexibility and configurability and the like caused by large volume of the gas circuit and the detection unit in the related technology are solved.

An insulation compaction device includes an insulating structure of an appliance and has an insulating media disposed within an insulating cavity. An operable piston selectively engages the insulating structure and operates to define a selected cavity volume of the insulating cavity and a selected insulation density of the insulating media. A valve is attached to the insulating structure and in a passive state releases gas from the insulating cavity to the exterior during operation of the operable piston. Selective operation of a pump mechanism places the valve in an active state to extract gas from the insulating cavity and define a cavity pressure of the insulating cavity that is less than an equalized pressure. The operable piston and the pump mechanism are at least one of sequentially and simultaneously operable to define a selected piston chamber environment defined by the selected cavity volume and the cavity pressure.

The utility model discloses a shoe with a buffer structure, and relates to the technical field of shoe bodies. The shoe with the buffer structure comprises a shoe sole and the buffer structure arranged in the shoe sole, and at least one cavity capable of being filled with fluid is formed in the buffer structure; the cavity is at least partially provided with an open structure before being filled, a closed structure is formed after the cavity is filled with fluid through the open structure, and the volume of the cavity does not exceed the total volume of the buffer structure. According to the utility model, by filling different fluids and matching with the intelligent supplement module, the real-time dynamic adjustment of the buffer characteristic is realized. The supplementing module is matched with the micro electric pump and the Bluetooth communication module through the sensor to form a closed-loop control system, the pressure of the air cavity is monitored in real time through the air pressure sensor, and the micro pump is controlled to supplement air through the control module.

This invention proposes an integrated vacuum pumping system for the exterior of a vacuum evaporation machine, comprising a coarse pumping pipe and a fine pumping pipe. A first three-way pipe and the fine pumping pipe are connected by a telescopic motor that drives the valve cover to rise and fall, enabling rapid switching between the coarse and fine pumping lines and avoiding vacuum fluctuations. Under the precise pressure control of the telescopic motor, the valve cover maintains uniform contact pressure on the sealing surface. The transition pipe directly connects the coarse and fine pumping pipes, eliminating flow channel redundancy in traditional multi-valve systems and reducing gas flow resistance. The telescopic motor is linked with a vacuum sensor to automatically switch the pumping mode based on the cavity pressure threshold, avoiding errors caused by manual intervention. The integrated three-way pipe reduces external connecting components, shrinks the equipment size, and lowers manufacturing costs and maintenance complexity.

A box suction mold comprises a mold bottom plate, a lower pressing frame, a mold core frame, a main control box connected with the mold bottom plate, a counter connected with the mold bottom plate and the lower pressing frame, a plurality of temperature sensors and a plurality of in-cavity pressure sensors laid on the mold core frame, and a main control unit connected with the temperature sensors and the in-cavity pressure sensors. The cavity external pressure sensor is used for detecting the pressure outside the mold cavity; the counting box is connected with the bottom plate; and a counting unit is arranged in the counting box. According to the technical scheme provided by the utility model, real-time monitoring of parameters such as temperature, pressure and the like in the plastic uptake forming process is realized by applying the sensor, the energy consumption can be reduced, the product quality and the production efficiency can be improved, and the operation safety and the equipment reliability can be improved.

This invention relates to the field of dual-cavity pressure sensors, and discloses a dual-cavity pressure sensor with a flexible corrugated diaphragm, comprising: a corrugated diaphragm, a pressure-sensing layer, and a substrate; the corrugated diaphragm is disposed on the upper side of the pressure-sensing layer; the pressure-sensing layer is sealed on the upper side of the substrate; a first pressure-sensing cavity and a second pressure-sensing cavity are spaced apart on the side of the pressure-sensing layer near the substrate; deformation sensing components are disposed inside and / or outside the first and second pressure-sensing cavities; the deformation sensing components include a resistance sensing part or a capacitance sensing part; the resistance sensing part is disposed inside the corrugated diaphragm; the capacitance sensing part is disposed inside the first and second pressure-sensing cavities. The flexible corrugated diaphragm effectively alleviates the fatigue fracture problem caused by stress concentration in the pressure-sensing layer, extending the service life of the sensor; the combined resistance and capacitance measurement improves detection sensitivity.

The invention belongs to the technical field of aviation, and particularly relates to an engine bearing cavity ventilation system simulation calculation method considering pump suction performance, which is based on a flow simulation calculation platform and adopts elements such as a cylindrical pipeline, an elbow, a transition joint, a throttling hole, a flow source, a pressure source, a controller and a signal collector. Components such as a pipeline, a sealing device, a bearing cavity and a lubricating oil pump set are represented, an engine bearing cavity ventilation system simulation calculation model considering pump suction characteristics is constructed, parameters such as pressure and ventilation quantity of the bearing cavity can be accurately calculated, and the influence mechanism of the parameters such as structures, flow, pressure and throttling hole diameters of different components on the ventilation system is revealed. According to the scheme, modular elements are adopted, the system layout and related parameters can be conveniently and rapidly adjusted, the design accuracy and calculation efficiency of the bearing cavity scheme are improved, and the high cost generated by redeveloping a new ventilation system is reduced.

The invention discloses a composite material forming device and method for stable-pressure resin injection and a product, the composite material forming device for stable-pressure resin injection comprises a press system, a resin injection system and a mold, and further comprises a mold cavity pressure dynamic adjusting system; the die cavity pressure dynamic adjusting system comprises a controller, a die cavity pressure sensor and a die position sensing device; the die cavity pressure sensor is used for monitoring the pressure in the die cavity in real time and feeding back a pressure value; the mold position sensing device is used for monitoring the height of a mold cavity of the mold in real time and feeding back a height value; the controller is used for receiving the pressure value and the height value; the controller is further in communication connection with the press system and controls the press system, when the pressure of the die cavity is larger than the preset standard pressure, a control instruction is output to the press system, the press system dynamically adjusts the position of the upper die and / or the lower die so as to adjust the height of the die cavity in real time, and therefore the pressure in the die cavity is stabilized within the preset target pressure range.

The invention relates to the technical field of part cleaning, in particular to a hardware part cleaning device and method for an internal complex environment. And a robot can be matched to assist workpiece positioning and conveying, and cleaning automation and precision are improved. The device comprises a dry ice supply system, an air source system, a mixing ejector, a cleaning cabin, a negative pressure recovery system and the like, according to the method, a sealed cleaning cavity is constructed through a sealing assembly and a sealing cover, negative pressure recovery is started to establish initial negative pressure, then gas-solid two-phase flow formed by mixing dry ice and compressed air is intermittently injected, and the cavity pressure is periodically adjusted; and the cleaning medium fully permeates deep and long oil ducts and gaps, and pollutants are continuously pumped out in cooperation with negative pressure. The problems of kinetic energy attenuation and cleaning dead angles of existing dry ice cleaning complex inner cavities are solved, cleaning is efficient and thorough, secondary pollution is avoided, the robot assists in optimizing the cleaning process, and the robot is suitable for complex inner cavity hardware parts such as industrial gearboxes.

The application discloses a loader and a vehicle-mounted weighing method thereof. The vehicle-mounted weighing method of the loader comprises the following steps: establishing a linear model in the lifting process of the loader under different working conditions, acquiring the size cavity pressure difference of a boom cylinder, the boom angle and the boom angular velocity corresponding to different working conditions, and the maximum load weight of the loader in real time; calculating the full-load theoretical pressure difference and the empty-load theoretical pressure difference of the loader according to the size cavity pressure difference of the boom cylinder, the boom angle and the boom angular velocity corresponding to different working conditions; and calculating the actual weight of the load of the loader according to the size cavity pressure difference of the boom cylinder, the maximum load weight, the full-load theoretical pressure difference and the empty-load theoretical pressure difference in the actual lifting and weighing process of the loader. The technical scheme provided by the embodiment of the application has high flexibility for vehicle-mounted weighing.

The invention provides a low-Reynolds-number wing design method based on a cavity pressure pneumatic flexible coupling effect, and relates to the technical field of aircraft design, the method comprises the following steps: detecting the flow separation position of a low-Reynolds-number wing to obtain the mounting position and laying length of an elastic wall plate; the method comprises the following steps: analyzing the airfoil shape of a wing by using the mounting position and laying length of an elastic wallboard, enabling the elastic wallboard to coincide with the shape of the mounting part of the wing in a non-deformation state to obtain the chordwise shape of the elastic wallboard, and testing by using the pressure value of the dynamic pressure in the flight process of the low-Reynolds-number wing. The thickness and material selection of the elastic wall plate are obtained, the cavity pressure value is obtained through calculation according to the lift force of the rigid wing body and the lift force of the wing body provided with the elastic wall plate, the low-Reynolds-number wing provided with the elastic wall plate is adjusted, and the improved low-Reynolds-number wing profile is obtained. The problems of how to improve the lift-drag ratio of the wings and prolong the endurance time of the aircraft are solved.

The present application relates to the technical field of joint equipment, more particularly to a nuclear grade quick joint with pressure relief and multi-stage safety interlocking, comprising: a plug and a socket structure; the socket structure comprises: an adapter pipe, one end of the adapter pipe is connected with an adapter head, and the other end of the adapter pipe is connected with the plug in a plug-in manner; a locking mechanism for limiting and locking the plug is installed inside the adapter pipe, and a ball valve mechanism for cutting off the medium channel between the adapter head and the plug is installed inside the adapter pipe, the ball valve mechanism is connected with a control sleeve which is slidably arranged on the outer side surface of the adapter pipe, and an auxiliary pressure relief mechanism is installed on the control sleeve to discharge the medium in the ball valve mechanism and the medium channel after the ball valve mechanism cuts off the medium channel. The present application has reliable pressure relief function, and can realize multi-stage safety interlocking with the joint locking mechanism, so that the unlocking and dismounting of the plug are allowed only after the cavity pressure is safely released and the residual medium is completely discharged, thereby comprehensively improving the safety and reliability of the operation of the nuclear grade pipeline connection.

The application provides a vacuum mixing process optimization method and system, which comprises collecting mixing container cavity pressure, jacket temperature, material torque, stirring speed, and air extraction flow signal, calculating pressure change rate, torque fluctuation amplitude, air extraction amount per unit time, and pressure fluctuation characteristic quantity, dividing the vacuum mixing process into four stages of initial exhaust, bubble release, viscosity climb, and densification stability; in the initial exhaust section, the vacuum valve opening degree and time length are controlled according to the air extraction amount and the pressure change rate, and the pressure response delay is recorded; in the bubble release section, an air extraction and stop alternating sequence is generated, and the air extraction and stop time length is corrected in combination with the delay; in the viscosity climb section, the target pressure interval is determined according to the torque, temperature, and pressure change rate, and the speed and valve opening degree are cooperatively adjusted to stabilize the pressure; in the densification stability section, a stability criterion is constructed, and the valve opening degree is controlled as needed; when adjacent stages are switched, the target pressure starting point, valve opening degree initial value, speed initial value, and control period of the next stage are corrected according to the end parameters of the previous stage.

The invention relates to a forging return stroke electro-hydraulic system adopting discrete liquid volume units and a control method.The system comprises a plurality of oil tanks connected with a controlled pressure containing cavity in parallel at the same node, and the first end and the second end of each oil tank are connected with a reversing valve and a one-way valve correspondingly to form a volume unit capable of being independently gated; all the oil tanks jointly form a parallel oil tank group; the plunger type cylinder is connected with a node of the parallel oil tank set, oil in the plunger type cylinder flows into the return oil tank to be compressed when the hammer head enters, and oil in the return oil tank flows into the plunger type cylinder to provide return force for the hammer head when the hammer head retreats. According to the working frequency requirement, the forging force requirement and the oil elasticity modulus fluctuation condition of the hammer head, the return stroke oil tank is controlled to reach the maximum volume allowed by the working condition through the combination of discrete volume units, and meanwhile the set pressure of the system is adjusted according to the maximum pressure value of the plunger cavity; the pressure curve of the plunger cavity can cover the minimum return stroke pressure requirement in real time, and the return stroke requirements of the hammer head under various working conditions of different working frequencies, forging forces and different oil liquid elasticity moduli in a large range are met.

The application discloses an active sealing device for a water-tight cavity, and belongs to the technical field of water-tight sealing structure design. The device comprises a self-adapting sealing assembly and a cavity pressure regulating system. The self-adapting sealing assembly comprises an elastic liquid bag array, a flexible sealing belt, a sealing ring and a sealing ring arranged on the top of the self-adapting sealing assembly. The self-adapting sealing assembly is installed between the cavity body and the cavity cover of the water-tight cavity. When the pressure of the liquid bag in the elastic liquid bag array is lower than the set threshold, the air pressure regulating pipeline in the cavity pressure regulating system indirectly increases the water injection pressure of the liquid bag through the pressure compensator, the elastic liquid bag array expands in volume by injecting fluid medium, drives the sealing ring to displace along the axial direction, and makes the sealing ring and the cavity cover form an interference fit and establish a sealing interface. The application effectively overcomes the failure propagation defect of the traditional single sealing structure, and is suitable for long-term stable sealing requirements in deep sea environment.

The invention belongs to the technical field of liquid metal 3D printing, and particularly relates to a jet flow control system for melt impact, which comprises an upper cavity device, a vacuumizing system, a gas supply system, a pressure monitoring device, a main controller and an upper computer, an upper cavity pressure gauge is mounted at the upper part of the upper cavity device and is used for monitoring the gas pressure in the upper cavity device in real time; a nozzle is arranged on the lower portion of the upper cavity device, the gas supply system is communicated with the upper cavity device, the vacuumizing system is communicated with the upper cavity device, and the upper computer, the upper cavity pressure gauge, the gas supply system and the vacuumizing system are all in communication connection with the main controller. The upper computer is used for inputting an operation instruction to the main controller, so that the main controller controls the gas supply system and the vacuumizing system based on the operation instruction and the gas pressure; through non-mechanical on-off control of gas pressure, rapid opening and closing of jet flow are achieved, it is guaranteed that the solidification and forming process of a molten pool is controllable, and a series of problems caused by a mechanical switch are avoided.

An insufflator is operable in a set-up mode and in a normal insufflating run mode. In the set-up mode, a pressure / volume relationship between cavity pressure and cavity volume of the cavity of a subject is determined. A minimum safe working pressure value and a maximum safe working pressure value of a working pressure range for the cavity to be insufflated is determined from the pressure / volume relationship as a pressure value just above a lower point of inflection and an upper point of inflection of the pressure / volume relationship, respectively. In the normal insufflating run mode a working pressure value is selected from the range of working pressure values and the insufflator insufflates the cavity to the selected working pressure value. Also disclosed is an insufflating system comprising an insufflator operable in a set-up mode and in a normal insufflating run mode. A controller located remotely relative to the insufflator remotely controls the insufflator to operate in the set-up mode and / or the normal insufflating run mode.

The invention relates to the technical field of medical instruments, in particular to a cavity pressure and temperature cooperative control method, a cavity pressure and temperature cooperative control system and perfusion equipment. The control module increases the suction flow of the suction device according to the temperature error so as to reduce the actual temperature in the operation cavity; and the control module increases the perfusion flow of the perfusion device based on the pressure change amount in the operation cavity caused by the increase of the suction flow so as to compensate the pressure in the operation cavity.

The invention discloses a spiral self-sensing soft robot, and belongs to the technical field of soft robot sensing, the spiral self-sensing soft robot comprises a main body made of an elastomer material, the main body is provided with a tubular cavity and a tube wall, and an outer spiral line is formed on the tube wall; the metal spring is embedded in the outer spiral line, and the spiral parameter is matched with the spiral parameter of the outer spiral line; when the main body generates axial telescopic deformation under the action of pressure change of the inner cavity, the metal spring deforms synchronously along with the main body, and the inductance value of the metal spring corresponds to the axial length of the main body and serves as a feedback signal of closed-loop control. The sensor provided by the invention provides a sensing hardware basis for closed-loop control, has the characteristics of high repeatability, low hysteresis quality and large elongation under the condition of external load, and provides potential for sensor integration of a sectional continuum robot.

The invention relates to the technical field of new energy automobile accessories, in particular to a new energy relay shell and an additive mixing manufacturing method thereof. Performing array printing on the outer surface of the functional skeleton to generate a preset directional deformation assembly, and performing integrated printing in the functional skeleton to generate a three-dimensional variable cross-section arc extinguishing flow channel; scanning and activating the surface of the functional skeleton by adopting a plasma beam, and then depositing a silane coupling agent layer; putting the functional framework into an injection mold, and injecting a thermoplastic engineering plastic melt into the mold; the pressure of the mold cavity is maintained until the temperature of the injection molding layer is reduced to be lower than the crystallization temperature, the deformed preset directional deformation assembly is fastened through the volume shrinkage rate of the injection molding layer, the thin plate is induced to be directionally bent through the heat flow deformation technology, and dynamic mechanical counterforce balance is formed through the rebound potential energy of the thin plate and the shrinkage force of the injection molding layer. And the IP67 protection requirement of the high-voltage relay of the new energy automobile is met.