62results about How to "Accurate pressure" patented technology

The invention discloses a high and low temperature control rock-soil nuclear magnetic resonance triaxial apparatus and a use method, the high and low temperature control rock-soil nuclear magnetic resonance triaxial apparatus comprises a high and low temperature control rock-soil nuclear magnetic resonance triaxial apparatus arranged in a low field nuclear magnetic resonance analyzer, the high and low temperature control rock-soil nuclear magnetic resonance triaxial apparatus comprises a temperature control system, a pressure chamber, an axial stress loading device and a data acquisition system, temperature control systems are arranged at the upper and lower ends of the pressure chamber; and an axial stress loading device and a data acquisition system are arranged below the pressure chamber. According to the invention, high and low temperature accurate and stable control can be realized, an in-situ occurrence temperature environment and a real stress state of a soil sample are really simulated, and the material and the size of the device are adaptive to the test requirements of a low-field nuclear magnetic resonance analyzer and the size of a pore cavity; the test research on the macroscopic strength characteristic, the micro-pore structure, the permeability characteristic and the like of the geotechnical material by the temperature can be carried out; while the strength and deformation mechanical property indexes of the sample are obtained, a high-resolution image of internal pore structure evolution and dynamic moisture migration can be captured.

The invention relates to the field of water supply systems, and discloses an urban pipeline leakage monitoring system based on a DMA partition management technology, and the system comprises a data collection module which is used for collecting the data of a flowmeter, a pressure sensor and a hydrophone in a DMA partition; the data preprocessing module is used for preprocessing the data; the time sequence analysis module is used for performing seasonal and trend decomposition and nonlinear time sequence analysis on the preprocessed data; the leakage detection module is used for predicting and detecting leakage; the noise analyzing and positioning module is used for analyzing and determining the specific position of the leakage point of the pipe section through the noise data of the hydrophone; and the real-time prediction alarm module is used for processing data in real time and triggering alarm when leakage is detected. The system not only can predict a potential leakage event in advance, but also can quickly position and give an alarm when leakage occurs, so that the operation efficiency and safety of the water supply system are greatly improved.

The invention discloses a safe operation tubular column for a carbon dioxide injection well and an operation method, a tubing hanger is hung at the upper end of a casing head, a load test short section is connected below the tubing hanger, and the load test short section is sequentially provided with a sliding sleeve valve, an upper centralizer, a releasing packer, a lower centralizer, a gas injection valve, a tail short section and a screwed plug towards the lower tubular column. After the pipe column enters a well, the annulus protection fluid is positively injected for fluid replacement; a constant-pressure valve ball is put in, and the sealing performance is checked through step-by-step positive pressure; a tubing hanger is seated after pressure relief; the releasing packer is set through positive pressure, then pressure is continuously increased to break the valve seat thin-wall section of the constant-pressure valve seat, and positive injection communication of the tubular column is achieved; and then water is squeezed forwards, after the sealing performance of the packer is verified, a wellhead is installed and connected with a ground process, carbon dioxide is injected forwards, and soaking is conducted after the carbon dioxide reaches the set gas injection amount. The tubular column does not overflow in the process of descending into a well, after positive replacement, a ball is thrown to press and set a packer, a shaft is protected, dirt deposition is prevented, the risk of breakage and falling of the tubular column is completely eradicated, and the operation process is safe and controllable.

The invention relates to the technical field of fuel cells, and discloses a fuel cell hydrogen supply system, a hydrogen supply control method and device and electronic equipment. The hydrogen supply system comprises a plurality of flow control units; and the apertures of the air outlets of the plurality of flow control units are different. A plurality of nozzles are arranged at the air inlet end of the ejector; the nozzles are communicated with the air outlets of the flow control units, the apertures of the multiple nozzles are different, and the multiple nozzles are in one-to-one correspondence with the air outlets of the multiple flow control units. And the air inlet end of the electric pile is communicated with the air outlet end of the ejector. The control method comprises the following steps: acquiring the current pile current and the actual pressure value of hydrogen entering the pile; based on the current pile current, determining a corresponding hydrogen inlet pile set pressure value; and under the condition that the deviation value of the actual pressure value of the hydrogen entering the pile and the set pressure value of the hydrogen entering the pile is not within the range of the deviation threshold value, determining the adjusting quantity of the opening degree of the flow control unit according to the deviation value and the current electric pile current. The problem that the hydrogen reactor inlet flow fluctuation is large is solved.

The invention relates to the technical field of rocket power tests, and discloses a liquid oxygen supply system and a liquid oxygen supply method.The liquid oxygen supply system is characterized in that a liquid oxygen storage tank is provided with an extrusion gas inlet and a liquid oxygen inlet and outlet; the gas extrusion subsystem extrudes liquid oxygen in the liquid oxygen storage tank; the liquid oxygen filling subsystem is used for filling liquid oxygen into a liquid oxygen storage tank; the main regulating valve is connected with the liquid oxygen inlet and outlet; the input ends of the plurality of parallel branches are connected with the main regulating valve, and the output ends of the plurality of branches provide liquid oxygen for test pieces at different stations respectively; a branch regulating valve is arranged on each branch; the flow and pressure of each branch are adjusted by adjusting the opening degree of the main adjusting valve and adjusting the opening degree of the branch adjusting valves. The flow of each branch is adjusted by adjusting the opening degree of the adjusting valve of each branch, so that the resistance of each branch is as close as possible, and the high-precision control of the flow and pressure of test pieces at different stations is achieved; and multi-path equal-pressure equal-flow liquid oxygen distribution is realized. And the main regulating valve is combined to regulate the total flow.

The invention discloses an oxygen element doped sulfide electrolyte, a preparation method and application thereof, the surface of the sulfide electrolyte contains a uniform oxide coating layer, and the interior of the sulfide electrolyte is doped with an oxygen element; the thickness of the oxide surface coating layer is 1-50nm, the oxygen element of the oxide-doped sulfide electrolyte is in gradient distribution, the structure can improve the air stability of the sulfide electrolyte, and the structure also can ensure that the oxygen coating shell is not easy to fall off because the doped oxygen element is less in amount and less in ionic conductivity loss, so that the performance of the sulfide electrolyte is improved. And the air stability of the sulfide electrolyte is further improved.

The invention relates to a vehicle curve self-adaptive cruise stability control method utilizing differential steering, which adopts a hierarchical control architecture, and combines a differential steering control strategy based on MFAC and a fuzzy logic rule of multi-target weight coefficient self-adjustment based on MPC in upper layer control, so that the stability of the vehicle curve self-adaptive cruise stability is improved. Taking the actual vehicle speed, acceleration, position, yaw velocity and side slip angle of the vehicle as input, and outputting to obtain the expected acceleration of the vehicle; in the lower-layer control, driving and braking switching logic based on a deceleration protection range threshold value and a feedforward-feedback fusion control strategy based on an acceleration error are combined, the actual vehicle speed, the acceleration and the expected vehicle acceleration of the vehicle serve as input, and a vehicle hub motor torque signal is output and obtained; and transmitting the vehicle hub motor torque signal to the vehicle hub motor so as to correspondingly control and change the driving state of the vehicle. Compared with the prior art, the transverse stability of the vehicle in the curve vehicle following process can be improved, and the transverse displacement deviation can be reduced.

The utility model relates to the field of protective film discloses a kind of hot-press processing device of household electrical appliance protective film, including workbench, the top of the workbench is fixedly connected with support, the inner wall top of the support is fixedly installed with hydraulic cylinder, the output end bottom of the hydraulic cylinder is fixedly connected with hot-press plate, the top of the workbench is provided with fixed mechanism, the fixed mechanism includes placing seat, the placing seat is fixedly connected in the top of workbench, the front of the placing seat is provided with recess.This utility model, through the cooperation of first electric push rod, push plate, moving rod and fixed clamp, combined with the second electric push rod driving articulated rod, slide base drives fixed clamp to adjust spacing, realize the automatic pressure fixation of different size protective film, the stress is uniform during fixing process, effectively avoid the displacement and wrinkle of protective film when hot-pressing, significantly improve the close tightness, solve the problem of poor fixing effect of prior art.

The utility model relates to the technical field of wind power shafts, in particular to a wind power shaft die forging prefabricated blank tool. According to the technical scheme, the wind power shaft die forging prefabricated blank tool comprises a stamping part, a forging stock, a tool body and a base, the tool body is installed in the base, a forming cavity is formed in the tool body, the forging stock is placed in the forming cavity, the stamping part is erected above the tool body, a stamping head is arranged on the stamping part, and the stamping head is connected with the forging stock. The forging stock is machined into a pre-forged piece through extrusion of the stamping piece and the tool body, and a guide hole is stamped in the top end of the pre-forged piece through a stamping head. By means of in-mold prefabrication, pre-forging of shapes including the blind hole in the head and upsetting of the head during finish forging, forming can be achieved, the overall machining allowance is small, and the material utilization rate is high.

The peritoneal dialysis system (10) includes: a circulation machine (20) comprising a pump actuator (60), a patient line valve actuator (34e), at least one supply line valve actuator (34b, 34c), and an exhaust line valve actuator (34a); and a disposable medical fluid cartridge (130) comprising a pumping section (126) configured to operate using the pump actuator (60), a patient line valve seat (132e) configured to operate using the patient line valve actuator (34e), a rigid body (138) defining a common pit (146), at least one supply line valve seat (132b, 132c) located in the common pit (146) and configured to operate using at least one supply line valve actuator (34b, 34c), and an exhaust line valve seat (132a) located in the common pit (146) and configured to operate using the exhaust line valve actuator (34a).

The invention relates to a fatigue test device and method for an elevator nylon guide wheel. The fatigue test device comprises a test platform; the pressurizing mechanism is arranged on the testing platform and is used for applying an alternating load or a static load to the nylon guide wheel; the temperature control box is connected to the test platform in a relatively movable manner, and a test space for accommodating the nylon guide wheel is formed in the temperature control box; the transmission mechanism is connected with the temperature control box in a matched mode and drives the temperature control box to move relative to the testing platform so that the temperature control box can be opened or closed, and the nylon guide wheel can be taken and placed in the testing space. The actual working temperature condition of the nylon wheel is simulated through the temperature control box, the alternating load or the static load is output to the nylon wheel through the pressurizing mechanism, the fatigue test is carried out under different temperatures and alternating loads, the relatively real working condition is simulated, and the device is suitable for testing nylon wheels of different specifications.

The invention relates to the field of submarine cables, and discloses an armor layer shape correction mechanism and an operation device, the armor layer shape correction mechanism comprises a repair ring, the repair ring comprises an upper shell and a lower shell, and the upper shell and the lower shell form a ring shape; the multiple monitoring pieces are installed on the inner wall of the upper shell and the inner wall of the lower shell respectively; the vertical projection of the monitoring piece on the inner wall of the upper shell does not coincide with the vertical projection of the monitoring piece right opposite to the inner wall of the lower shell; through the synergistic effect of the monitoring strain gauges, the elastic pieces, the buckles and the grooves and in combination with the special layout of the monitoring pieces, real-time, accurate and reliable pressure monitoring and overload protection of the armor layer shaping process are achieved, and finally high quality, high reliability and high efficiency of shaping work are ensured.

The present application discloses an electronic device, belonging to the field of intelligent devices. The electronic device includes a screen, N pressure sensing modules, a microcontroller unit MCU and a pressure sensing signal processor; N pressure sensing modules are arranged below the screen, and N is a positive integer greater than 1; the pressure sensing module is connected to the MCU, and is used to generate a voltage signal after detecting a pressing operation; wherein the voltage signal includes a positive voltage signal and a negative voltage signal; the MCU is connected to the pressure sensing signal processor, and is used to convert the voltage signal into a pressure sensing signal, wherein the pressure sensing signal includes: a positive signal corresponding to the positive voltage signal and a negative signal corresponding to the negative voltage signal; the pressure sensing signal processor is used to receive the pressure sensing signal transmitted by the MCU and process the pressure sensing signal; wherein processing the pressure sensing signal refers to reverse linear processing of the positive signal and the negative signal.

The invention discloses a novel aviation hot patching instrument system and method. The hot patching instrument system comprises a controller, and the controller and all elements form a temperature control system, a vacuum degree control system, an over-limit alarm system and a data input and output system. The temperature control system is composed of a controller, a temperature sensor, a temperature acquisition module, a power module and an AD / DA module. The vacuum degree control system is composed of a controller, a vacuum pump, a pressure sensor and an AD / DA module. The over-limit alarm system is composed of a controller, an AD / DA module, an audible and visual alarm and an emergency protection switch. The heating rate, the heating process, the temperature maintaining time and the cooling rate required by vacuum curing are designed according to operation requirements, meanwhile, an ideal vacuum state is provided, and accurate pressure inspection and adjustment are carried out. And the curing of the resin is controlled and completed by a set program, so that the quality and efficiency of repairing work of the composite material can be ideally ensured.

This utility model discloses a terminal crimping mold, including a supporting base block. An outer mounting ring is horizontally fixedly connected to the outer side of the supporting base block. The top surface of the outer mounting ring has evenly distributed fixing through holes. A top horizontal groove is horizontally formed on the top surface of the supporting base block. A clamping motor is fixedly mounted on the outer side of the supporting base block. A clamping top plate is symmetrically snapped onto the top surface of the supporting base block. A supporting bottom mold is horizontally connected to the top surface of the supporting base block. This design effectively resists the reaction force generated by pressure, preventing the mold from shaking or shifting, ensuring smooth crimping operations, and improving production safety and reliability. The clamping motor and end cylinder can quickly and accurately complete the clamping and crimping actions, greatly shortening the time of each crimping cycle. Operators only need to perform simple terminal and wire placement and finished product removal operations, reducing manual intervention and operation time, and achieving a highly efficient production process.

The utility model relates to the technical field of air bags, in particular to a three-layer air bag structure special for a watch, which comprises a first air bag, a second air bag and a third air bag which are sequentially stacked, the first air bag is communicated with the second air bag through a first through hole, the second air bag is communicated with the third air bag through a second through hole, and a first air nozzle is arranged on the first air bag. A first air nozzle is arranged on the first air bag, a second air nozzle is arranged on the second air bag, the first air nozzle is connected with an external air pump for air intake or / and air release, the second air nozzle is connected with an external sensor for pressure detection, and the third air bag is attached to the wrist of a user. According to the utility model, air is fed through the first air nozzle, sequentially passes through the first air bag, the second air bag and the third air bag, finally returns to the second air bag and forms circulating air flow through the second air nozzle, so that the pressure detected by an external sensor is more accurate, and the measurement accuracy and stability of the sensor are improved.

This invention relates to an algorithm for compensating for changes in driving force caused by temperature variations in active suspension. The algorithm includes determining temperature and oil viscosity by testing the relationship between torque and pressure difference; slowly applying a constant torque to the motor under set conditions and recording pressure sensor readings; establishing a table showing the relationship between pressure sensor readings, temperature, and oil viscosity at a given torque; estimating oil temperature and then calculating oil viscosity from the table using torque and pressure; estimating the leakage of the electric hydraulic pump based on oil viscosity; estimating the throttle valve pressure drop based on leakage and oil viscosity, calculating the driving force, and calculating the actual pump flow rate based on speed and displacement information; obtaining the flow rate through the throttle valve; calculating the throttle valve pressure drop from the table; and calculating the driving force using a formula. This invention utilizes existing sensors on the active damper for temperature compensation, eliminating the need for additional sensors, accurately determining the valve pressure drop, and calculating the output driving force.

The utility model discloses a constant force value loading device, comprising two clamping plates which are symmetrically arranged on two sides of the constant force value loading device; one side of the adjusting device is connected to the side, close to the other clamping plate, of one clamping plate, and the adjusting device comprises a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod, a seventh connecting rod and an eighth connecting rod which are sequentially connected end to end; one side of the force value sensor is connected to the other side of the adjusting device, and the other side of the force value sensor is connected to the clamping plate. The constant force value loading device solves the problems that an air cylinder loading mechanism is unstable in air source pressure and inaccurate in loading force value, and an oil cylinder loading mechanism is high in cost, and has the advantages of being simple in structure, stable in loading pressure, accurate in pressure value, low in cost, small in size and convenient to carry.

The utility model discloses a micro-melting and sputtering pressure sensor integrated bonding wire plate which comprises three interface holes, the three interface holes are arranged on a circuit board, a pressure sensor bonding pad is attached to the circuit board, the pressure sensor bonding pad is provided with a pressure sensor bonding wire area, and the pressure sensor bonding wire area is provided with a pressure sensor bonding wire. The pressure sensor bonding wire area comprises a sputtering film pressure sensor bonding wire area, a glass micro-melting pressure sensor bonding wire area and a middle lead hole; the middle lead hole is arranged between the sputtering film pressure sensor bonding wire area and the glass micro-melting pressure sensor bonding wire area, and a lead bonding point is arranged in the pressure sensor bonding wire area. According to the utility model, the bonding wire plates of two types of sensors are combined and designed to one universal platform, so that the complexity of product design is remarkably simplified, the material cost is reduced, the production cost is also reduced because only one type of bonding wire plate needs to be manufactured and stored, and the same production line can be used for the two types of sensors, so that the production efficiency is improved. And the time for replacing tools and adjusting equipment is shortened, so that the overall production efficiency is improved.

The present disclosure provides a visual pressure regulating catheter, including: a catheter body (1), and a hydraulic dilation balloon (2) and a pressure regulating handle (3) both of which are disposed on the catheter body (1), an endoscope pressure regulating cavity (5) and a dilation liquid perfusion cavity (6) are formed in the catheter body (1), the dilation liquid perfusion cavity (6) is communicated with the hydraulic dilation balloon (2), and the pressure regulating handle (3) is provided with a perfusion port (301) which is communicated with the dilation fluid perfusion cavity (6) and a pressure regulating port (701) which is communicated with the endoscope pressure regulating cavity (5); an observation channel (4) is opened at a position on the endoscope pressure regulating cavity (5) axially opposite to the hydraulic dilation balloon (2), a camera at a front end of the endoscope sequentially passes through the pressure regulating port (701), the endoscope pressure regulating cavity (5) and the observation channel (4) and extends into the hydraulic dilation balloon (2), and an operating rod at a tail end of the endoscope is slidably and sealingly connected to the pressure regulating port (701).

The invention discloses a wide-working-condition and high-stability two-phase experiment circulating system and a testing method thereof, and relates to the field of electronic device heat management, and the experiment circulating system comprises a pumping unit, a flow control and pressure stabilization unit, a pressure control unit, a temperature control unit, a condensation unit and a data acquisition unit. According to the experimental system, a wide-working-condition and high-stability two-phase flow cycle test environment is realized through cooperation of the pumping unit and the flow control and pressure stabilization unit, the flow heat exchange performance of the two-phase flow heat exchanger at different inlet flows, supercooling degrees and dryness can be actually tested, and multi-dimensional data such as temperature, pressure and flow state of each key node in a loop can be monitored in real time; the comprehensive performance of the heat exchanger is completely reflected, and experimental basis and design reference are provided for operation of a two-phase flow cooling system of an electronic device and optimization design of the heat exchanger.

The invention discloses an intelligent monitoring system for an AIPFIMS plasma furnace. The intelligent monitoring system comprises the following steps: step 1, configuring a corresponding sensor; step 2, data analysis and processing; step 3, remote monitoring and control; 4, intelligent early warning and alarming are carried out; and 5, automatically adjusting and optimizing. In addition, trend analysis and prediction can be carried out according to historical data and real-time data through the data processing module, and the performance change and possible faults of the plasma furnace can be predicted in advance.

The invention relates to the technical field of steel ladle detection, and discloses a steel ladle bottom blowing air permeability detection method which comprises the following steps: step 1, gas pretreatment: filtering and pre-regulating pressure of input gas by using a gas pretreatment system; 2, pressure monitoring, wherein the original pressure of the system and the pressure of an outlet of a mass flow meter are collected through a pressure monitoring system; and 3, monitoring the gas flow of the air brick by using an online mass flow meter, and accessing a signal to a PLC system through an RS485 or hard wiring mode. According to the steel ladle bottom blowing air permeability detection method and system, after the pressure buffer device is introduced, pressure fluctuation can be effectively absorbed, damage to detection equipment caused by sudden pressure change is reduced, the service life of the equipment is prolonged, meanwhile, the pressure buffer device can protect a sensor against high-pressure impact, and the detection accuracy is improved. And the stability of the system is improved.

The invention discloses a low-permeability reservoir carbon dioxide drive under-pressure operation pipe column and an operation method. The pipe column sequentially comprises a high-pressure screwed plug, a tail pipe, a gas injection valve, a tungsten plating and permeating oil pipe, a lower centralizer, a releasing packer, an upper centralizer, a sliding sleeve valve and an air sealing oil pipe from bottom to top. A tubular column enters a well during operation under pressure, and annulus protection fluid is positively injected for fluid replacement; a constant-pressure valve ball is put in, positive pressing is carried out step by step, and the sealing performance of the tubular column is checked; slowly setting a tubing hanger after pressure relief; then positive pressure is applied to enable the releasing packer to be set, then pressure is continuously increased to break the valve seat thin-wall section of the constant-pressure valve seat, and positive injection communication of the tubular column is achieved; and then water is squeezed forwards, after the sealing performance of the packer is verified, the ground process is connected, carbon dioxide is injected forwards, the carbon dioxide enters a shaft annulus and a stratum, and well closing is conducted after the set gas injection amount is achieved. The device can meet the requirement for under-pressure operation, overflow is avoided in the well descending process, after positive replacement, a ball is thrown to press and set a packer, a shaft is protected, dirt deposition is prevented, and the whole operation process is safe and controllable.

The utility model provides an instrument pressure tapping device which comprises a first pressure tapping pipe and a second pressure tapping pipe, the first pressure tapping pipe is arranged on a coal gas main pipeline and arranged upwards, the second pressure tapping pipe is arranged on the upper portion of the first pressure tapping pipe, one end of the second pressure tapping pipe is communicated with the upper portion of the first pressure tapping pipe, and the other end of the second pressure tapping pipe is communicated with the lower portion of the second pressure tapping pipe. The second pressure tapping pipe is used for communicating the first pressure tapping pipe with the pressure tapping instrument, and the circulation cross section area of the first pressure tapping pipe is larger than that of the second pressure tapping pipe. According to the device, coal gas containing a large amount of smoke dust upwards enters the first pressure tapping pipe from the coal gas main pipe, due to the fact that the first pressure tapping pipe is arranged upwards, most of the smoke dust settles under the action of gravity and then returns to the coal gas main pipe, and only a small amount of the smoke dust enters the second pressure tapping pipe and makes contact with the pressure tapping instrument; according to the arrangement mode, the situation that smoke dust is accumulated in the first pressure tapping pipe and the second pressure tapping pipe is greatly reduced, the pipeline pressure detected by the pressure tapping instrument is more accurate, and the fault rate is lower.

This utility model relates to the field of adhesive performance testing technology, and discloses an adhesive performance testing device, including a support plate and two positioning rods. The two positioning rods are respectively fixedly disposed between two support plates and located on both sides. A tension assembly is disposed at the lower end of the upper support plate, the tension assembly including a tension sensor and an upper adhesive plate, and a buffer protection mechanism is provided on the tension assembly. A pressure assembly is disposed at the upper end of the lower support plate, the pressure assembly including a lower adhesive plate, a screw, and a pressure spring, and a ball bearing mechanism is provided inside the pressure assembly. In this utility model, the device can reduce the rebound amplitude of the upper adhesive plate under the reaction force of the tension spring, thereby protecting the safety of surrounding personnel, and simultaneously reducing the large amount of physical exertion expended by the testing personnel when turning the handle, providing convenience for the testing personnel during operation.

This invention discloses a method for simultaneous measurement of atmospheric temperature and pressure based on Rayleigh-Brillouin scattering spectroscopy, belonging to the field of lidar. The method includes: emitting a laser in the atmospheric environment to be measured and acquiring the scattered echo signal of the laser; fitting the Rayleigh-Brillouin scattering spectrum of the scattered echo signal in the atmospheric environment to be measured; extracting the overall linewidth Γ of the Rayleigh-Brillouin scattering spectrum; and calculating the number of molecular scattered photons N. s ; will N s Substituting G1 and Γ into the inversion model yields the synchronous measurement results of atmospheric temperature T and pressure p; where G1 represents the atmospheric temperature and the overall linewidth Γ and the number of molecular scattered photons N. s The relationship between pressure and overall linewidth Γ and the number of molecular scattered photons N is expressed as follows: s The relationship between Rayleigh and Brillouin scattering spectra and atmospheric temperature and pressure is fully explored in this invention, establishing a new inversion model that enables accurate and synchronous measurement of atmospheric temperature and pressure.

The invention discloses a solid attitude and orbit control engine dual-pressure sensor information redundancy processing method, which comprises a preprocessing step, a third information acquisition step and a redundancy processing step, and specifically comprises the following steps: firstly, carrying out smooth processing and boundary condition conformity judgment on dual-sensor signals, preliminarily eliminating invalid information, and carrying out redundancy processing; and then resolving the ballistic model in the zero dimension to obtain a pressure simulation value, processing in combination with the indication values of the double sensors to obtain third information, and when the difference between the indication values of the double sensors is within an allowable range, adopting the weighted average value of the indication values of the double sensors as a final output value, otherwise, adopting the third information to choose. According to the method, the pressure intensity of the inner ballistic trajectory is estimated through inner ballistic trajectory simulation calculation, information fusion is carried out by adopting the zero-dimensional inner ballistic trajectory model pressure intensity simulation value of the solid engine and the double pressure intensity sensors, and the problem that the solid attitude and orbit control engine can only be provided with two pressure intensity sensors at most for redundant fault-tolerant design under the limitation of the cost and the size is solved.

The invention relates to the technical field of makeup tool manufacturing, and discloses a special-shaped makeup powder puff with an edge enhanced supporting structure, which is formed by sequentially laminating a leather layer, a waterproof film, foam and a hydrophilic polyurethane layer, the waterproof film and the foam are bonded through a gradient volatile polyurethane adhesive prepared from ethyl acetate and dipropylene glycol methyl ether acetate, and in the edge area of the powder puff, the adhesive permeates into the surface layer of the foam in a compressed state and is cured, so that a rigid composite supporting framework is formed; according to the manufacturing process, partitioned differential pressurization is adopted, and edge glue is forced to deeply permeate; in cooperation with gradient heating curing, edge framework shaping and waterproof film stress relaxation are sequentially achieved by means of the difference of the solvent evaporation rate; and finally, compounding the fabrics on the two sides and punching along the central line of the edge framework. According to the invention, the differentiated touch feelings of stiff and shape-preserving edges and loose and soft center can be realized without introducing extra inserts, and the technical problem that the soft film lamination is easy to generate orange peel patterns can be effectively solved.

The invention discloses a two-way communication compensation type coal seam drilling gas pressure and flow measuring system which comprises a two-way measuring device, a gas supplementing pump, a pressure adjusting chamber and a flow compensation chamber. The bidirectional measuring device comprises a base, and an air inlet measuring mechanism and a compensation measuring mechanism are arranged on the base in a bilateral symmetry mode. Each of the air inlet measuring mechanism and the compensation measuring mechanism comprises a bottom plate and a graduated drum, one end of the bottom plate is hinged to the bottom of the graduated drum, the other end of the bottom plate is upwards provided with an arc-shaped plate, and the arc-shaped plate is provided with an arc-shaped groove; the middle of each graduated drum is downwards connected with an arc-shaped connecting plate, each connecting plate is connected with a bolt inserted into the corresponding arc-shaped groove, each bolt is connected with a pressing nut, and the lower ends of the two graduated drums are connected through a connector and a communicating pipe. The invention further discloses a corresponding gas pressure and flow measuring method. The communicating vessel principle is introduced into the gas pressure and flow measurement technology, changes of pressure conditions and the like in the measurement process are made up through compensation measurement, and the practice of coal mining and gas extraction is better guided.