25802 results about "Air pump" patented technology

Various patient monitoring systems, devices, and methods are disclosed for monitoring physiological parameters of a patient. A noninvasive blood pressure monitor can include an inflatable cuff, a pressure transducer, an air pump, and a plurality of air paths connecting the inflatable cuff, the pressure transducer, and the air pump. The monitor can also include an acoustic filter provided along at least one of the air paths. In some cases, the monitor can include first and second air pumps, as well as a processor to independently control operating characteristics of the air pumps. The processor can also control the air pumps so as to provide a first inflation rate for the inflatable cuff during a non-measurement portion of an inflation phase and a second, higher inflation rate during a measurement portion of the inflation phase.

A material removal system includes a collection conduit having a distal end that is positionable adjacent particulate material. A primary particle separator system connected to the collection conduit separates quantities of particulate material entrained in an air stream. A secondary particle separator system connected to an outlet of the primary particle separator system separates additional quantities of particulate material entrained in an air stream exiting the primary particle separator system. An air pump connected to an outlet of the secondary particle separator system creates an airflow through the collection conduit and the primary and secondary particle separator systems. A conveyor system operatively associated with material discharge ports of the primary and secondary particle separator systems collects separated particulate material from the material discharge ports of the primary and secondary particle separator systems and transports the separated particulate material to a material discharge end of the conveyor system.

The invention relates to the technical field of pipe inner wall polishing, in particular to a plastic pipe inner wall polishing device. Comprising a sliding ring slidably arranged on a mounting cylinder, the right side of the sliding ring is connected with an air inflation bag, the right end of the air inflation bag is connected with the mounting cylinder, a fixedly-arranged second electric push rod and a slidably-arranged air pump are further fixedly mounted on the mounting cylinder, and the telescopic end of the second electric push rod is connected with the sliding ring. And a connecting pipe is communicated between an air outlet of the air pump and the inflatable bag. The movable part, the telescopic polishing block and the concentration mechanism are arranged and jointly assist to achieve adaptive adjustment of different pipe diameters, in addition, the inwards-concave inflatable bag is designed, so that the pipeline is adjusted and attached in a matched mode, abrasive dust is efficiently pushed out, the flexibility and adaptability of the equipment are enhanced, and the service life of the equipment is prolonged. And cleaning and polishing are integrated, so that the device can be operated more easily, and the overall using effect and working efficiency of the device are improved.

The invention relates to the technical field of hydrogen engines, in particular to a hydrogen internal combustion engine crankcase ventilation system, an engine and a hydrogen concentration control method. The crankcase ventilation system of the hydrogen internal combustion engine comprises a crankcase, a measuring part, an air supplementing part, a ventilation part and a control device, the crankcase comprises an air inlet and an air outlet, the measuring part is arranged in the crankcase, the air supplementing part comprises an air supplementing pump, the air supplementing pump is communicated with the air inlet, the ventilation part comprises an oxidation catalyst and a ventilation pump which are communicated in sequence, and the control device is arranged in the crankcase. The oxidation catalyst is communicated with the exhaust port and connected with a temperature control device, and in addition, the control device is electrically connected with the measuring part, the air supplementing pump, the ventilation pump and the temperature control device. According to the invention, the concentration and pressure of hydrogen in the crankcase are monitored in real time, and the gas supplementing pump, the ventilation pump and the temperature control device are adjusted according to the measurement result, so that the concentration of hydrogen in the crankcase is effectively controlled.

The invention relates to the technical field of gas detection, in particular to a multi-gas accurate detection method and system.The method comprises the following steps that gas to be detected flows through a miniature gas enrichment device prepared through an MEMS technology under driving of a miniature gas pump, and target gas is adsorbed and enriched through graphene and metal oxide composite sensitive materials on the surface of a spiral gas inlet flow channel in the miniature gas enrichment device; the desorption concentrated gas is heated to the multi-gas composite detector, and the sensor array reacts with the gas to generate an electric signal; the data acquisition unit performs noise reduction, amplification and analog-to-digital conversion preprocessing on the electric signal; the data processing unit extracts characteristic vectors such as a response curve peak value and a rising slope; inputting the feature vector into a pre-trained machine learning classification-regression combined model, and outputting a gas type identifier and an initial concentration; error compensation is carried out in combination with environment temperature and humidity and a cross sensitivity interference mode library, and finally accurate information of at least nine gases is output. The device has the advantages of high sensitivity, strong anti-interference performance and miniaturization.

Systems and methods disclosed herein include a portable air pump and inflator system comprising an electric air compressor, a compressor housing enclosing the electric air compressor, an air hose attached or attachable to an air outlet of the electric air compressor, and a housing base attached to the compressor housing. The housing base comprises a rigid base portion that is attached to the compressor housing and a plurality of flexible foot extensions that extend from the rigid base portion. The flexible foot extensions are configured to support the portable air pump and inflator system on a surface and dampen vibrations caused by the operation of the electric air compressor.

A coal and gas outburst monitoring device includes the insertion and anchoring assembly, and the pump drainage and monitoring mechanism; the insertion and anchoring assembly is vertically inserted and distributed on the sidewall of surrounding rock of coal mine roadway, and the insertion and anchoring assembly can monitor the stress change data in the sidewall of surrounding rock in real time; the pump drainage and monitoring mechanism is erected within the coal mine roadway, and the pump drainage and monitoring mechanism can cooperate with the insertion and anchoring assembly to perform the gas pump drainage monitoring for the sidewall of surrounding rock of goaf, and to obtain the gas seepage monitoring data in the surface layer and the inner layer of sidewall of surrounding rock. Thus, comparing with the database mechanism, the accurate and advanced predictions for the gas outburst can be made.

The invention relates to the technical field of automobile seats, and discloses an automobile seat with a kneading massage function, the automobile seat with the kneading massage function comprises a seat body and a massage module arranged on the seat body, the massage module comprises a lower base plate, an upper base plate and an air pump, the lower base plate and the upper base plate are each provided with a plurality of massage actuators and an electromagnetic valve used for controlling on-off of an air path. According to the scheme, the efficient mechanical impact structure percussion plate and the telescopic rod are fused in a pneumatic system, and the mode that the air pump is used for rapidly vacuumizing and then instantly releasing is adopted, so that short, strong and impact deep finger-pressing type percussion massage which is difficult to achieve by a traditional pneumatic scheme is achieved; the defect that an existing product is insufficient in massage strength is effectively overcome, and the problems of muscular soreness after strenuous exercise and body stiffness caused by long-time driving are effectively relieved.

The invention discloses a feeding manipulator for petroleum drill rod joint production, and belongs to the technical field of feeding manipulators, the feeding manipulator comprises a mechanical operation arm, two mechanical operation claws are arranged at the free end of the mechanical operation arm, and each mechanical operation claw comprises two clamping claw pieces symmetrically arranged on an output shaft of the mechanical operation arm; a stabilizing assembly with a stabilizing part is arranged in the clamping jaw part, the stabilizing part comprises a main air bag which is arranged in the clamping jaw part and used for improving uniform clamping pressure, an air pump is arranged at the top end of the clamping jaw part, and an inflation part is installed between the output end of the air pump and the main air bag in a communicating mode. The main air bag is arranged in the clamping jaw piece, the internal main air bag can be inflated and expanded to fill gaps between the clamping plates and workpieces, the clamping jaw piece can adapt to the workpieces of different shapes and sizes, the elastic material can absorb clamping impact force, the rigid clamping plates are prevented from making direct contact with the surfaces of the workpieces, pressure is evenly distributed after inflation, local stress concentration is prevented, and the clamping jaw piece can be used for clamping workpieces of different shapes and sizes. And the clamping stability is improved.

The invention provides a highly-integrated new energy motor home heat management system. The system comprises a refrigerating loop, a battery loop, a motor loop, a warm air loop, an engine loop, a water purification loop, a ten-way valve, a water supplementing kettle and a water supplementing pipeline. The refrigerating circuit comprises a compressor, a condenser, an electromagnetic expansion valve, an air conditioner evaporator and a chiller, the battery circuit comprises a power battery, a battery pump and a water temperature sensor, and the motor circuit comprises a motor water pump, a water temperature sensor, an electric control three-in-one unit, a driving motor, an on-off electromagnetic valve and a low-temperature radiator. The warm air loop comprises a double-area high-pressure liquid heater, a warm air pump, a cab warm air core body and a living cabin warm air core body, and the engine loop comprises an engine, an engine water pump, a water temperature sensor, a thermostat, a high-temperature radiator, an on-off electromagnetic valve and a plate heat exchanger. The water purification loop comprises a water purification tank, a water temperature sensor, a water purification pump, a three-way valve and water consumption equipment. The limo water purification system is coupled with the whole limo thermal management system, loops in the system are integrated through the heat exchanger and the ten-way valve, and maximum waste heat utilization is achieved through series-parallel connection of the loops so as to reduce energy consumption.

The invention belongs to the technical field of waste gas detection, and particularly relates to waste gas detection equipment which comprises a detection box. A waste gas analyzer is mounted at the top of the detection box; a detection probe is mounted at the bottom of the waste gas analyzer; a detection cylinder is arranged in the middle of the detection box; a mounting block is fixedly connected to an inner cavity of the detection cylinder and located at the top of the detection cylinder; an air outlet assembly is arranged below the mounting block; two guide cylinders, namely a first guide cylinder and a second guide cylinder, are fixedly connected to two sides of the detection cylinder; air grooves are formed in the two sides of the mounting block and located in the side wall of the detection cylinder. An air pump is arranged below the first guide cylinder in an initial state and is positioned at the bottom of the detection box; a circular groove is formed in the lower part of the second guide cylinder in an initial state; a collecting assembly is mounted in the circular groove; by arranging the guide cylinder and the detection cylinder, residual gas in the detection box can be discharged, and the situation that newly sucked waste gas is mixed with original waste gas, and consequently the waste gas detection precision is affected is avoided.

The invention relates to the technical field of waste gas treatment, and discloses a washing tower for waste gas treatment, which comprises an annular water tank, a tower body, a communicating pipe, a spiral cylinder, a water pump, a rotary dispersion device, two spiral mixing devices, a spraying purification device and the like, the upper end of the communicating pipe is communicated with the tower body, and the lower end of the communicating pipe is communicated with the annular water tank; the water pump is fixedly connected with the inner wall of the bottom of the annular water tank, the rotary dispersing device is connected with the tower body and the annular water tank, the two spiral mixing devices are connected with the two spiral cylinders respectively and connected with the rotary dispersing device, and the spraying purifying device is connected with the tower body and connected with the two spiral mixing devices respectively. By arranging the spiral cylinder, the spiral roller, the first rotating shaft, the air pump and other structures, the waste gas can be sucked into the spiral cylinder after being sprayed and purified, the waste gas and the washing liquid are mixed again through the spiral roller, the waste gas and the washing liquid react again, and the waste gas washing and purifying efficiency is improved.

The invention provides a vehicle interior laser cutting machine tool, and relates to the technical field of laser cutting machine tools, the vehicle interior laser cutting machine tool comprises a cutting table and a laser cutting head, the middle of the cutting table is hollow, a drawer type waste tray is movably inserted in the cutting table, one end of the cutting table is fixedly provided with a dust collector, and the other end of the cutting table is fixedly provided with an air blowing pump; shunting seats are fixedly mounted on the two sides of the cutting table, a plurality of dust collection holes are formed in the two side walls in the cutting table at equal intervals, cavities used for collecting dust are formed in the two side walls in the cutting table, and the output end of the dust collector is fixedly communicated with the two cavities in the cutting table; the adjusting assembly is installed at the top of the cutting table and used for adjusting the position of the laser cutting head, and the bearing sets are installed on the cutting table at equal intervals and used for containing the vehicle interior trim panel. According to the laser cutting machine tool, the sealing windshield is driven to be opened and closed through the rollers in the adjusting assembly, the purpose of air duct follow-up switching is achieved, and the laser cutting machine tool has the excellent cleaning capacity for kerfs of a to-be-cut piece.

The invention discloses weld bead tracking welding equipment, and relates to the technical field of weld bead tracking welding, the weld bead tracking welding equipment comprises a bottom plate, the top of the bottom plate is fixedly connected with a fixing frame, and the fixing frame is provided with a transverse moving assembly. Through the arrangement of the swing cleaning unit, an air cylinder and an isomorphic extrusion rod drive an arc-shaped plate to swing, the arc-shaped plate swings to drive a swing arm, a fixing cover, a motor and a cylindrical brush to swing, the motor is started to drive the cylindrical brush to rotate, the swinging cylindrical brush can clean a welding seam, and then the cleaning range of the cylindrical brush is enlarged; an air pump sucks air through an air suction pipe, then the air enters a collecting box through a cylindrical brush and a fixing pipe, the cylindrical brush rotates to drive the air suction pipe to rotate, the air suction pipe with the end abutting against a fixing cover is blocked, air suction is stopped, and the welding seam is cleaned; and the air suction pipe which does not abut against the fixed cover can absorb impurities on the welding seam, and the cleaning effect on the welding seam is improved.

The invention relates to the technical field of optics, in particular to a gas concentration regulation and control interference imaging system applied to shape righting of a nozzle handle, a shape righting tool and a nozzle are prepared, the shape righting tool is provided with a downward pressing mechanism, the downward pressing mechanism is provided with a downward pressing telescopic column for correcting the nozzle handle, and a displacement measurement interferometer system is assembled on the shape righting tool; the displacement measurement interferometer system is provided with a reflecting movable mirror and a beam splitter, and the reflecting movable mirror is mounted on the pressing telescopic column; the displacement measurement interferometer system further comprises an interference light path stroke difference fine tuning system. The interference light path stroke difference fine adjustment system comprises a glass container for containing sulfur hexafluoride, the end faces of the two ends of the glass container are flat and transparent, the glass container is arranged on a light path between the beam splitter and the reflective moving mirror, and the end faces of the two ends of the glass container are perpendicular to laser on the light path; the glass container is provided with an air supply port; the air supply port is connected to an air pump, and the air pump is connected with a sulfur hexafluoride air source. And the shape correcting position of the nozzle handle is accurately controlled.

Systems and methods are provided for a portable air compressor comprising an electric battery, an electric motor, a piston, and an air hose. The electric motor is powered by the electric battery. The piston is coupled to and driven by the electric motor. The piston is configured to compress air within a piston cylinder. The air hose has a first end attachable to an air outlet of the piston cylinder and a second end attachable to an inflatable object. The portable air pump is configured to inflate the inflatable object to a target air pressure. When the target air pressure is below a predetermined pressure threshold, the portable air pump inflates the inflatable object at a first inflation rate. When the target air pressure is above the predetermined pressure threshold, the portable air pump inflates the inflatable object at a second inflation rate greater than the first inflation rate.

The invention discloses a graded detection method and system for an air-breathing smoke-sensing fire in a complex environment, and relates to the technical field of fire-fighting early warning, and the method comprises the steps: recognizing a ventilation opening of a monitoring region in the complex environment, and arranging air-breathing smoke-sensing equipment on the ventilation opening; state monitoring is conducted on the ventilation opening, and working mode parameters of the ventilation opening are obtained and comprise the ventilation starting and stopping state, the wind speed and the ventilation direction; and analyzing to obtain a self-adaptive strategy matched with the working mode parameters to control the sucking pump to drive the air-breathing smoke sensing equipment to collect smoke gas samples, performing multi-time sequence grading detection, and outputting a fire early warning signal. According to the invention, the technical problem that the existing fire detection technology is difficult to accurately collect smoke samples and give out early warning in time in places with complex ventilation structures and obvious air disturbance is solved, and the air-breathing smoke sensing equipment is arranged at the ventilation opening and the sampling strategy is dynamically adjusted; and the accuracy of smoke collection and the real-time performance of fire early warning are improved.

The present invention relates to an automatic assembly machine for automatically assembling a motor assembly in a micro air pump. The motor assembly comprises a motor, an optional stainless steel sheet, a plastic base, an eccentric wheel and steel balls. The automatic assembly machine simultaneously solves the problems of stable feeding of the stainless steel sheet, stable feeding of the plastic base, distribution of the steel balls, detection of the steel balls, etc., and cooperates with a conveying mechanism to realize the full-automatic assembly of the motor assembly in the micro air pump, thereby greatly improving the production efficiency of the product, improving the yield rate and reducing the production cost of the factory.

The invention relates to the field of medical instruments, in particular to a marine war wound hemostasis fixing device which comprises a framework, a hemostasis module, a fixing module and an intelligent monitoring module are mounted on the framework, the framework comprises a plurality of angle-adjustable split arc-shaped assemblies, and the arc-shaped assemblies are connected in series through flexible connecting pieces; the hemostasis module comprises a gradient pressure air bag assembly, the gradient pressure air bag assembly comprises a central pressurizing bag and a peripheral stabilizing bag, the gradient pressure air bag assembly is communicated with a multi-stage air pump assembly, and the multi-stage air pump assembly is installed on one side of the framework; the intelligent monitoring module comprises a controller, an acceleration sensor, a pressure sensor, a microwave blood flow sensor and a biological impedance monitoring electrode, and the multistage air pump assembly, the acceleration sensor, the pressure sensor, the microwave blood flow sensor and the biological impedance monitoring electrode are all in signal connection with the controller. The invention aims to overcome the defects in the prior art, and provides an efficient, reliable and intelligent solution for maritime war wound first aid.

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

The invention belongs to the technical field of spin-coating machines, and discloses a spin-coating chamber structure capable of stabilizing a chamber flow field and improving chamber cleanliness. The synchronous cover module, the air pressure adjusting module and the spin-coating turntable module which are arranged from top to bottom are of a concentric structure; a flow channel allowing spin-coating liquid to flow out is reserved between the spin-coating rotary table module and the air pressure adjusting module, and the spin-coating rotary table module and the synchronous cover module are synchronous in rotating speed during spin-coating. Before spin-coating, an air pump is connected to an air channel of the air pressure adjusting module, impurities in the spin-coating cavity are taken away from the surface of a substrate through airflow, and the cleanliness of the cavity is improved. And in the spin-coating process, supersaturated gas is introduced from the air inlet of the synchronous cover module, passes through the cylindrical cavity and is introduced into the spin-coating cavity from the air outlet, so that the atmosphere environment in the spin-coating cavity is improved, the evaporation uniformity is improved, and the film thickness uniformity is improved. In the spin-coating process, the synchronous cover module and the spin-coating module rotate synchronously, and the trapezoidal spoiler of the synchronous cover module can improve the air flow speed in the spin-coating chamber, so that the air flow speed in the spin-coating chamber is more uniform, and the film thickness uniformity is ensured.

The invention relates to a knob type air pump for inflation and deflation, which comprises a pump shell with an inner cavity, the front side of the pump shell is provided with an inflation and deflation port in butt joint with an inflation product, the pump shell is further provided with an air inlet and outlet port communicated with the external environment, and the top side of the pump shell is further provided with a knob; the one-way valve comprises a valve seat and a valve core; the rear end of the valve core penetrates through the valve seat, and the front end is provided with a diaphragm; the valve element has the freedom degree of front-back movement relative to the valve seat. The mounting frame is fixed in an inner cavity of the pump shell; the air blowing assembly is fixed to the mounting frame; the rotary reversing assembly is used for switching the air flowing direction; the rotary reversing assembly comprises a rotary reversing block connected with the rotary knob. One end of the connecting rod is hinged to the eccentric position of the rotary reversing block, and the other end is hinged to the rear end of the valve element. Air channels are switched in a rotating mode, and meanwhile the one-way valve is opened or closed through transmission of the connecting rod in the rotating process; the structure is stable and reliable, and air leakage caused by the fact that the one-way valve cannot be completely closed is avoided.

The invention relates to the technical field of microorganism sampling equipment, in particular to an ore-containing salt lake brine microorganism sampling device and method.The ore-containing salt lake brine microorganism sampling device comprises a balance weight floating platform, and through cooperation of a laser ranging mechanism, a PLC, a first electromagnetic valve, a second electromagnetic valve and an air pump, the sampling depth can be adjusted according to the actual sampling depth requirement; sampling distance parameters are flexibly set through the PLC according to actual sampling requirements, the winding mechanism is controlled to work through the PLC, the winding mechanism drives the sampling head to be lowered or pulled back, the distance between the sampling head and the bottom plate is detected through the laser ranging mechanism, and when the actual distance detected by the laser ranging mechanism reaches a set value, the sampling head is driven to move back and forth. The first electromagnetic valve and the second electromagnetic valve on the to-be-sampled barrel are started through the PLC, the air pump is started, a sample enters from the sampling head through an air pumping mode of the air pump, the operation is simple, the use is convenient and fast, and meanwhile, the sampling flexibility of samples with different depths is improved.

The present utility model discloses a Bluetooth speaker table lamp with essential oil aromatherapy, including a base, an aromatherapy mechanism arranged on the base, a lamp panel arranged around the aromatherapy mechanism, a lampshade sleeved on the lamp panel and abutting against a top of the base, and an aromatherapy control board arranged at a top of the aromatherapy mechanism, where the aromatherapy mechanism includes an essential oil bottle, a microporous tube B communicating with the essential oil bottle, a silicone pad of the essential oil bottle that is arranged on a bottle mouth of the essential oil bottle, an aromatherapy chamber detachably connected to the bottle mouth of the essential oil bottle, an air pump motor arranged beside the essential oil bottle, and a microporous tube A with one end communicating with the air pump motor.

The utility model provides a beverage machine which comprises an equipment body and further comprises a brewing unit installed on the equipment body and used for preparing a beverage; the fluid assembly is mounted on the equipment body, is communicated with the brewing unit and is used for providing fluid required for preparing the beverage for the brewing unit; the air pump and the three-way valve are both installed on the equipment body, and the air pump is communicated between the fluid assembly and the brewing unit through the three-way valve and used for providing purging airflow for the brewing unit. When beverage brewing is completed, the air pump is started, the three-way valve enables the air pump to be communicated with the brewing unit, airflow generated by the air pump can blow away residual beverage in the brewing unit, the utilization rate of beverage consumption agents is increased, and the problem that residual liquid at a beverage outlet drips is solved.

The invention discloses a temperature compensation method and system, and the method comprises the steps: receiving a valve block temperature signal collected by a temperature sensor integrated with a pressure sensor in a closed gas supply unit, and an electronic element temperature and environment temperature signal collected by a temperature sensor on a control unit PCB, generating an initial temperature-working condition data set by combining the power of the air pump and the working duration of the electromagnetic valve; performing thermal resistance network modeling on the initial temperature-working condition data set, constructing a multi-node thermal characteristic matrix, and decomposing the matrix into a plurality of sub-matrixes; performing real-time operation on the sub-matrix by using a dynamic heat balance algorithm to generate a temperature estimation result of the key component; and generating a temperature compensation control instruction according to the temperature estimation result of the key component. According to the embodiment of the invention, the temperature of the key component can be accurately estimated, dynamic compensation is realized, and the control precision and stability of the closed gas supply unit are improved.

The invention relates to the technical field of laser welding, and discloses a laser welding process for a large-thickness workpiece internally forming a keel, which comprises a welding gun, and a button is arranged on the welding gun. In the welding process, when welding needs to be canceled, the standard operation that the welding gun is lifted firstly and then the button is loosened is achieved, so that the situation that the welding wire is cooled due to the fact that the button is loosened firstly, and the welding wire cannot be smoothly broken and broken when the welding gun is lifted, so that the welding gun carries the welding wire to pull the welding seam, and the welding seam is damaged is avoided; the position of the ejector rod is adjusted, the ejector rod is adjusted to the other side, normal use is guaranteed, gas is injected into the hose through an external gas pump, generated gas flow is sprayed out through the annular pipe, the channel and the nozzle, welding slag on the movement path of the ejector rod is blown away and cleaned, the ejector rod cannot abut against the welding slag, and smooth sliding of the ejector rod is not affected; and the ejector rod can move smoothly.

The invention provides an intelligent pillow and a control method thereof, and belongs to the technical field of intelligent home furnishing.The intelligent pillow comprises a pillow body, the pillow body is provided with a snore stopping air bag, a pressure sensor array, a microphone line array and a control box, the snore stopping air bag is connected with an air pump through an air pipe, and the control box is in signal connection with the air pump; the pressure sensor array is in signal connection with the control box, and the pressure sensor array is used for collecting head pressure signals of a user and transmitting the head pressure signals to the control box; the microphone line array is in signal connection with the control box, and the microphone line array is used for collecting sound signals of a user and transmitting the sound signals to the control box so as to judge the snoring state of the user; the snore stopping air bag corresponding to the head position of the user is adjusted to change the external form of the pillow body, so that the head position of the user is changed. The snore problem of the user can be effectively relieved, and the sleep quality of the user is improved.

The invention relates to the technical field of power electronic driving control, in particular to a driving system and method for an ultrasonic air pump, and the system comprises a control signal generation module which is used for generating a control signal; the voltage superposition driving module is coupled to the control signal generation module and is used for superposing and lifting the driving voltage according to the control signal and executing reversing operation, and the reversing operation comprises forward driving and reverse driving; the driving frequency adjusting module is coupled to the control signal generating module and is used for adjusting the driving frequency and speed of the ultrasonic air pump based on the control signal; and the working circuit protection module is coupled to the voltage superposition driving module and is used for setting dead time between forward driving and reverse driving to prevent short circuit. According to the invention, the dependence of the ultrasonic air pump on an independent high-voltage power supply and how to realize high-voltage alternating driving through voltage superposition and avoid the risk of bridge arm direct connection and resonance mismatch under the constraint of a low-voltage power supply are effectively solved.

The invention discloses a traceable flue gas flow measurement system and method for a large-diameter chimney, and belongs to the field of flue gas flow measurement. The system comprises a tracer gas cylinder used for containing a tracer; the flow controller is used for controlling the output flow of the tracer agent; the tracer agent output from the flow controller is injected into the upstream position of the chimney pipeline through the tracer agent injection probe so as to be mixed with the flue gas; the tracer sampling probe is mounted at the downstream position of the chimney pipeline and is used for extracting a mixed gas sample through a gas pump; and the gas analyzer is used for analyzing the obtained gas sample and calculating the volume flow rate of the flue gas in the chimney pipeline. According to the invention, the volume flow of the flue gas in the chimney is directly calculated by monitoring the concentration change of the tracer agent in the flowing process in the pipe, so that the accuracy of flow measurement is improved, and the measurement result has traceability.