1653 results about "Pressure switch" patented technology

The invention relates to the technical field of loader brake valves, and discloses a hydraulic brake valve and a hydraulic system thereof.The hydraulic brake valve comprises the hydraulic brake valve, the hydraulic brake valve is composed of a one-way valve, a brake valve set, a brake lamp pressure switch, a low-pressure alarm pressure switch, a shuttle valve, a high-low pressure unloading valve and a throttling hole, and the high-low pressure unloading valve and the throttling hole are integrated; a P port, an A port, a B port, a T port, an LS1 port, an LS port, a low-pressure alarm pressure switch and a brake lamp pressure switch are arranged outside the hydraulic brake valve. A liquid filling valve is omitted, an oil source of the full-hydraulic power braking system is taken from an existing priority valve CF port of equipment, pressure feedback signals are selected through a shuttle valve on a hydraulic braking valve, the pressure feedback signals are transmitted to the priority valve, and liquid filling and energy supplementing of the full-hydraulic power braking system or steering work of a steering system is achieved. The brake has the remarkable advantages of being fast in brake response, low in noise, low in failure rate, high in safety coefficient, compact in structure, low in cost and low in energy consumption.

The invention discloses a water purifier system using a novel diaphragm pump. The water purifier system comprises a water inlet electromagnetic valve, a front filter element, a booster pump head, a filter element, a water suction pump head, a first one-way valve, a rear filter element, a pressure switch and a water outlet valve which are connected in sequence, the booster pump further comprises a motor and a water storage device, the motor is a double-output-shaft motor, one output shaft is in transmission connection with the booster pump head, the other output shaft is in transmission connection with the water suction pump head, and the water suction pump head is connected with the water storage device. The dual functions of pressurizing the filter element assembly and rapidly pumping water from the water storage device can be achieved, and meanwhile the water purifier has great advantages in the aspects of cost, waterway complexity and size.

The invention provides a mobile water sample collection device, which belongs to the technical field of sampling equipment, and comprises a sampler, a thrower and a traction rope, the sampler is used for collecting a water sample; the thrower is used for throwing the sampler to a target position; one end of the pulling rope is connected with the sampler and used for pulling the sampler; wherein the sampler comprises a floating body, a depth rope, a sampling cylinder, a flexible valve, a negative pressure assembly and a negative pressure switch assembly, and the floating body is connected with a traction rope and used for floating on the water surface; one end of the depth rope is connected with the floating body; the sampling cylinder is connected with the other end of the depth rope so as to limit the water taking depth through the depth rope; a water inlet is formed in the sampling cylinder; the flexible valve is arranged on the water inlet and seals the water inlet in a natural state; the negative pressure assembly is arranged on the sampling cylinder and is used for providing negative pressure for the sampling cylinder, so that the sampling cylinder absorbs water from the flexible valve; the negative pressure switch assembly is connected with the negative pressure assembly so as to start the negative pressure assembly to form negative pressure. The device is flexible and convenient to use and high in maneuverability.

The invention discloses an unmanned mining dump truck hydraulic braking system and a control method. The unmanned mining dump truck hydraulic braking system comprises a service brake valve set and a parking brake valve set. The service brake valve group comprises a first hydraulic proportional pressure reducing valve, a second hydraulic proportional pressure reducing valve, a first shuttle valve and a first pressure sensor; the first hydraulic proportional pressure reducing valve and the second hydraulic proportional pressure reducing valve are connected in parallel; oil outlets of the first hydraulic proportional pressure reducing valve and the second hydraulic proportional pressure reducing valve are communicated with an oil inlet of a first shuttle valve; an oil outlet of the first shuttle valve is connected with a first pressure sensor; the parking brake valve group comprises an electromagnetic directional valve, a redundant electromagnetic directional valve and a pressure switch; the electromagnetic directional valve is a normally closed valve, and the redundant electromagnetic directional valve is a normally open valve; the electromagnetic directional valve and the redundant electromagnetic directional valve are connected in series, the electromagnetic directional valve is connected with an oil inlet pipeline, the redundant electromagnetic directional valve is connected with an oil outlet pipeline and a parking brake caliper, and a pressure switch is arranged on the oil outlet pipeline.

The utility model discloses a grease lubrication pump. The structure of the grease lubrication pump is simplified and more compact. The grease lubrication pump comprises a pump base, an oil tank, a driver, a plunger assembly, a driven piece and a pressure switch, the oil tank, the driver and the pressure switch are installed on the pump base, a pump oil flow channel, an oil outlet flow channel and a trigger flow channel are arranged in the pump base, the pump oil flow channel is communicated with the oil outlet flow channel, and the trigger flow channel is communicated with the oil outlet flow channel. The plunger assembly is arranged in the oil pumping flow channel and installed at the output end of the driver, the driver drives the plunger assembly to slide in the oil pumping flow channel in a reciprocating mode, so that oil in the oil tank is sucked into the oil pumping flow channel under the action of negative pressure, the sucked oil is pushed out to the oil outlet flow channel for oil pumping, and the driven piece is arranged in the triggering flow channel and aligned with the pressure switch. The driven piece is pushed by oil in the triggering flow channel to extend out of the pump base, and the driven piece is pushed by oil with certain pressure to press the triggering pressure switch.

The invention relates to the technical field of circulating water pumps, and discloses a circulating water pump and a using method for ice making equipment, the circulating water pump comprises a circulating pump body, the circulating pump body is connected with a driving mechanism, a water inlet and a water outlet are formed in the two sides of the circulating pump body respectively, and the water inlet and the water outlet are communicated with an inner cavity of the circulating pump body respectively; a load filtering mechanism and a cross-shaped channel are arranged at the other end of the water outlet, the load filtering mechanism is located in the cross-shaped channel, and the load filtering mechanism comprises a main filtering assembly, an auxiliary filtering assembly and a pressure switching assembly. The ice making equipment has the advantages that through switching of the main filtering assembly and the auxiliary filtering assembly, the ice making equipment can be in a circulating water pumping state all the time in the water pumping process of the circulating pump body, and the situation that after the main filtering assembly is used for a long time, impurities in the circulating pump body and a water passing pipeline block the main filtering assembly, and work of the ice making equipment is affected is avoided.

The invention belongs to the field of wall type tangential combustion, and discloses a wall type tangential combustion method and system for combusting inferior coal, which can automatically adjust the gas amount and the air door opening by monitoring the pressure, the oxygen content and the gas flow in a hearth in real time. The accurate adjustment can ensure the optimal mixing proportion of the gas and the air, gas waste is avoided, the combustion efficiency is improved, and therefore the heat efficiency of the boiler is improved. The flame state information is continuously collected, the gas amount is adjusted in combination with flame stability, it is guaranteed that the combustion process is always in the optimal state, unburnt fuel and excessive discharged waste gas are reduced, and therefore the overall heat efficiency is improved. The combustion process is monitored in real time through the air pressure switch, the gas flow sensor, the flame ionization electrode and the like, and the gas amount and the air door opening degree are dynamically adjusted according to feedback signals. The automatic adjusting function can ensure that combustion is always in a stable and efficient state, and excessive or insufficient gas supply is avoided.

The invention discloses a steam turbine high-pressure shutoff device with online monitoring and maintenance functions, including a safety oil passage, a pressure oil passage, a return oil passage, an intermediate oil passage, an intelligent pressure switch transmitter, a safety oil hydraulic damper, an online verification hydraulic damper, a normally open electromagnetic stop valve and four shutoff valve groups. The pressure oil passage is connected to the safety oil passage in sequence through the normally open electromagnetic stop valve and the safety oil hydraulic damper, and the safety oil passage is connected to the return oil passage through the intermediate oil passage; the four shutoff valve groups are connected in parallel in pairs and then in series on the intermediate oil passage; the online verification hydraulic dampers are respectively arranged at the rear ends of the two pairs of shutoff valve groups; the intelligent pressure switch transmitter is respectively arranged on the safety oil passage and the intermediate oil passage. The invention not only has the functions of online monitoring and maintenance, but also improves the safety margin of the entire steam turbine unit on the basis of comprehensively improving reliability and response speed.

Methods of filling a gap with a dielectric material including using an inhibition plasma during deposition. The inhibition plasma increases a nucleation barrier of the deposited film. The inhibition plasma selectively interacts near the top of the feature, inhibiting deposition at the top of the feature compared to the bottom of the feature, enhancing bottom-up fill. A process chamber may have multiple pressure switches to enable a process after deposition at a higher pressure than the pressure during deposition.

The utility model discloses a filter element, an intelligent water purifier and a backwashing method of the intelligent water purifier, the filter element comprises a shell, a filter membrane assembly and a positioning terminal, and the positioning terminal abuts against and prevents the inlet end face of the filter membrane assembly from being extruded by reverse water flow to move, twist, deform and damage; the intelligent water purifier comprises a controller, a filter element, a purified water pressure tank, an electromagnetic valve and a water pump, the water pump presses raw water or seawater into the filter element for purification, and produced purified water is pressed into the purified water pressure tank; the filter element backwashing method further comprises a high-pressure switch, a pollution discharge throttle valve and a pollution discharge electromagnetic valve, the high-pressure switch triggers the controller to open the pollution discharge electromagnetic valve, and sewage is discharged through the pollution discharge throttle valve, so that purified water released by the purified water pressure tank is divided into two paths to appropriately flow back to the backwashing filter element. According to the intelligent water purifier, the filter element and the method for backwashing the filter element, the effects of saving water and reducing emission can be achieved, the purpose that the filter element can filter for a long time and does not need to be replaced is achieved, consumption of the multi-stage filter element is reduced, and the problem of peculiar smell caused by a traditional dirt hiding and containing filtering mode is solved.

An air compressor pressure switch capable of releasing pressure comprises a shell assembly, a pressure electric control assembly and an automatic pressure releasing assembly. An air compressor connecting port and an air storage tank connecting port are formed in the two ends of the shell assembly respectively, an inner cavity A and an inner cavity B are formed in the shell assembly, the inner cavity A and the inner cavity B are communicated through a middle channel, and an air leakage hole is formed in the middle channel; the pressure electric control assembly is arranged in the inner cavity B; the automatic pressure relief assembly is arranged among the inner cavity A, the middle channel and the inner cavity B; the automatic pressure relief assembly forms surface sealing between the inner cavity A and the middle channel, the automatic pressure relief assembly is in action association with the movable contact, and when the movable contact is separated from the static contact, the surface sealing state between the inner cavity A and the inner cavity B is relieved. The automatic pressure relief device is applied to an air storage tank inflation system, when the air storage tank reaches the set inflation pressure, high-pressure air between the air compressor and the air pressure switch can be automatically relieved, secondary starting difficulty of the air compressor is avoided, and the service life of the motor is prolonged.

A fall protection compliance system includes a connection structure configured for interfacing an anchor structure and a connection sensor associated with the connection structure. The connection sensor includes an accelerometer or a pressure switch, where the connection sensor is configured to monitor continued connection of the connection structure to the anchor structure over a period of time and to output a signal indicating said continued connection.

The oil filter cleanliness detection device comprises an oil pan, an oil filter is fixedly installed on the left side of the oil pan, a main pressure cavity is formed in the left side of the oil pan and located on the right side of the oil filter, a steel plate is fixedly installed on the upper side of the oil pan, and a paper pad is arranged between the oil pan and the steel plate. An oil filter valve body is fixedly installed on the upper side of the steel plate, an oil filter valve element is slidably connected into the oil filter valve body, a pressure detection hole is formed in the upper side of the oil filter valve body, a pressure switch is fixedly installed on the upper side of the pressure detection hole, a spring is fixedly installed on the right side of the oil filter valve element, and an oil filter aluminum pad is fixedly installed on the right side of the oil filter valve body. The left side of the oil filter aluminum pad clings to one end of the spring away from the oil filter valve core. By means of the mode, the oil filter valve element can be pushed to move through the oil pressure difference, an oil way can be in the on-off state, the oil pressure is detected only through the pressure switch, an additional sensor is not needed, and the cleanliness of the automatic gearbox oil filter is judged.

The invention relates to the field of tire type walking equipment, and discloses a load-sensitive hydraulic brake valve and a load-sensitive hydraulic system thereof, and the load-sensitive hydraulic system comprises the load-sensitive hydraulic brake valve, a load-sensitive pump, a priority valve, a steering hydraulic system, a working hydraulic system, a shuttle valve and corresponding connecting pipelines; a P port, an A port, a B port, a T port, an LS1 port, an LS port, a low-pressure alarm pressure switch and a brake lamp pressure switch are arranged outside the load-sensitive hydraulic brake valve. According to the system, full-hydraulic dynamic braking can be achieved on equipment without a prefill valve, the equipment efficiency is improved, the installation cost is reduced, the energy consumption is reduced, and the service life is prolonged. Wherein the load-sensitive hydraulic brake valve integrates a brake function, a pressure maintaining function, a high-low pressure switching function, a pressure signal selection function and a pressure alarm function; the invention has the advantages of fast braking response, low noise, low failure rate, high safety coefficient, compact structure, low cost, low energy consumption and long service life.

The invention discloses a pressure switch fatigue test system and method based on data analysis, and relates to the field of switch pressure test. The method comprises the following steps: S1, constructing an instantaneous pressure regulation factor based on a preset target pressure value and a current pressure deviation, and superposing external disturbance compensation to generate a real-time pressure signal; s2, based on the real-time pressure signal, an analog current signal is generated through nonlinear coupling, the dynamic proportion of the pressure to the current change rate is synchronously adjusted, and the corrected current change rate is output; s3, comparing the real-time pressure signal with a preset pressure threshold value, judging the on-off state of the switch, and performing cumulative statistics on the on-off times of the switch; s4, based on the real-time pressure and current signals, fatigue damage is dynamically evaluated through a stress-strain feedback model, and the switch fatigue degree is calculated in an accumulated mode to generate an accumulated fatigue damage strength index. Through fusion of dynamic regulation and control, current synchronization and a damage integration mechanism, working conditions are accurately simulated, nonlinear damage is quantified, and test authenticity and life reliability are improved.

The utility model discloses an LED table lamp switch control structure which comprises a base, one side of the base is connected with a pressure switch structure triggered through pressure, the top of the base is provided with a supporting frame, and an adjusting threaded rod is rotationally connected between the bottom of the upper end of the supporting frame and the top of the base. The adjusting threaded rod and the supporting frame are sleeved with a mounting sliding sleeve, and the side, close to the pressure switch structure, of the mounting sliding sleeve is connected with a mounting plate. According to the LED table lamp on-off control structure, the first magnetic block and the second magnetic block can be close to each other and attract each other, it is ensured that the distance between the first magnetic block and the second magnetic block is moderate, in the mounting cylinder, the first magnetic block moves upwards to pull the connecting wire, meanwhile, the adjusting plate can rotate through the connecting shaft and be opened outwards, and therefore the aim of reducing the shielding area of an LED lamp is achieved, and the service life of the LED lamp is prolonged. Therefore, the illumination range can be greatly expanded under the two conditions that the LED lamp is lifted and the lampshade is expanded to reduce shielding.

The invention discloses an inflation pump starting and stopping control method and device, electronic equipment and a medium, and relates to the field of control. According to the scheme, a dryer pressure switch is additionally arranged in an original braking system of a new energy vehicle, and the pressure switch state of the dryer pressure switch is related to the braking pressure value of the air inlet end of an air cylinder; the brake pressure value in the air cylinder is related to whether the electric blast pump needs to be controlled to start and stop, so that whether the electric blast pump needs to be controlled to start or stop is judged according to the obtained brake pressure value in the air cylinder of the new energy vehicle and the pressure switch state of the dryer pressure switch of the new energy vehicle; and the electric inflating pump is controlled to be started or stopped according to the judgment result, so that the starting and stopping of the electric inflating pump are accurately controlled, and the safety of the scheme is improved.

The invention relates to the technical field of medical cleaning disinfectors, in particular to a disinfector capable of recovering heat energy and draining water at low temperature and a pipeline control system. Comprising a cabin body, a pure water tank and a waste water tank, the pure water tank is arranged at the upper end of the cabin body, the waste water tank is arranged at the lower end of the cabin body, one side of the cabin body is connected with two peristaltic pumps, the two peristaltic pumps are connected in parallel, the two peristaltic pumps are connected with two liquid level floating balls, and a pressure transmitter is arranged at the upper end of the cabin body and connected with a circulating pump. The circulating pump is connected with the lower end of the cabin body, an air heating box is arranged between the pressure transmitter and the circulating pump, the air heating box is connected with a high-efficiency filter, and a second wind pressure switch is arranged between the air heating box and the high-efficiency filter; according to the integrated design, heat energy of disinfected water is recycled, and meanwhile low-temperature drainage is achieved.

The utility model relates to a road pit repairing device which is characterized in that a vehicle frame is connected with a rolling device and a hammering device; the hammering and pressing device comprises a portal frame fixedly connected with the frame, a lifting device electrically connected with the storage battery is installed on the portal frame, the lifting device drives a lifting plate, the lifting plate is fixedly connected with an electromagnet electrically connected with the storage battery, the portal frame is fixedly connected with a supporting plate, and the supporting plate is fixedly connected with the storage battery. The supporting plate is vertically and slidably connected with a vertical rod, the upper end of the vertical rod is fixedly connected with an armature matched with the electromagnet, the lower end of the vertical rod is fixedly connected with a sleeve, the sleeve is coaxially and slidably connected with a pressing rod, the upper end of the pressing rod is coaxially and fixedly connected with the lower end of a spring, and the upper end of the spring is fixedly connected with the upper bottom face of the sleeve. The lower end of the pressing rod is coaxially and fixedly connected with a pressing plate, the lifting plate is fixedly connected with a pressure switch electrically connected with the electromagnet, and the lifting plate is fixedly connected with a rubber pad corresponding to the pressure switch.

The invention relates to the technical field of forklift control, and discloses a control system and a control method of a standing plate type pallet truck. A pressure state signal of a hydraulic oil way is obtained through a pressure switch, a load state is judged, and a power mode is selected through a mode selection switch; and the controller controls the forklift to run according to the set acceleration running curve or brake according to the braking running curve according to different vehicle running states. The pressure switch is used for recognizing the light-load and heavy-load working conditions of the vehicle, the maximum speed of the light load of the vehicle is increased according to different load conditions and different power modes, the braking distance of the vehicle under different loads and the running stability of the vehicle are ensured, and the service life of the vehicle is prolonged. Therefore, the working efficiency of the vehicle is improved, the purposes of smooth driving and safe and smooth braking of the vehicle are achieved, and various control requirements of a user on high efficiency, safety, comfort and the like of the vehicle under different working conditions are met.

The invention belongs to the field of high-voltage switch cabinets, and relates to an inflatable semi-insulating high-voltage switch cabinet which is characterized in that a bus chamber, a gas tank and a cable chamber are arranged in the middle of the interior of a cabinet body frame, an instrument chamber, a mechanism chamber and a front cable chamber are arranged at the front end of the interior of the cabinet body frame, a maintenance opening is reserved in a rear cover plate of the gas tank, and a rear sealing plate of the gas tank is hermetically mounted at the position corresponding to the maintenance opening; an anti-explosion through hole is formed in the center of the gas tank rear sealing plate, the anti-explosion piece is installed at the anti-explosion through hole, a connecting opening communicated with the mechanism chamber is reserved in the gas tank front cover plate, the gas tank front sealing plate is installed at the position corresponding to the connecting opening in a sealed mode, and the supporting insulator, the three-station mechanism conductive piece and the circuit breaker pole are installed in the gas tank. The three-station operating mechanism, the inflation inlet and the circuit breaker operating mechanism are installed in the mechanism chamber, the inflation inlet is communicated with the gas box in a sealed mode, and the gas box is filled with insulating gas. According to the invention, the operation difficulty can be reduced, and the circuit breaker, the three-position mechanism and other core components can be free of maintenance.

The utility model discloses a wire harness isolation plate hole site detection clamp, and relates to the technical field of clamps. Comprising an air cylinder, an air pressure switch valve, a product hole site profiling plate, hollow pipes, a mounting plate and an air pipe, the air cylinder is connected with the air pressure switch valve through the air cylinder, a piston rod of the air cylinder is connected with the mounting plate, the air cylinder is arranged on the fixed supporting frame, and the hollow pipes are arranged on the mounting plate. And the upper end of the hollow pipe is connected into a hole of the product hole site profiling plate. The device is reasonable in structural design, can accurately detect the hole site of the wire harness isolation plate, effectively meets the processing precision requirement, does not generate deviation, and is high in reliability.

The invention relates to the technical field of air pressure switches, in particular to an air pressure switch, a power distribution module, a battery pack and a thermal runaway alarm method of the battery pack. At least part of the diaphragm assembly is conductive, the diaphragm assembly divides an inner cavity of the shell into a first cavity and a second cavity which are separated from each other, and the shell is provided with a first vent hole communicating the first cavity with the outside of the shell; the number of the connecting terminals is at least one, and the connecting terminals are arranged in the second cavity; and the diaphragm assembly is configured to move along with the air pressure difference between the first chamber and the second chamber, so that the conductive part of the diaphragm assembly is in contact with or separated from the connecting terminal. According to the air pressure switch provided by the invention, the detection sensitivity of the air pressure switch is improved, and the accuracy of pressure detection alarm is further improved.

The invention relates to the technical field of automobile safety control, and discloses a brake detection method and system, a vehicle and a computer readable storage medium. The brake detection method comprises the steps that a brake switch signal and an air pressure switch signal are obtained; based on the brake switch signal and the air pressure switch signal, whether a brake request exists or not is judged; wherein if any one of the following conditions is met, it is judged that the brake request exists: the brake switch signal is in an effective state and a brake switch normally-closed fault is not triggered; the air pressure switch signal is in an effective state and does not trigger an air pressure switch normally-closed fault; the brake switch signal and the air pressure switch signal are both in an effective state. The brake intention recognition accuracy and the system reliability are effectively improved by obtaining the brake switch signal and the air pressure switch signal and judging whether the brake request exists or not based on the double-switch redundancy logic.

The invention discloses a wafer vacuum chuck calibration method and device, wafer detection equipment and a storage medium. The wafer vacuum chuck calibration method comprises the steps that in the vacuum breaking process of a wafer vacuum chuck, a negative pressure switch is controlled to be in an off state, a positive pressure switch is controlled to be in an on state, and a first time point when the positive pressure switch is in the on state and a second time point when the air pressure of the chuck reaches a first air pressure value are obtained, according to the first time point and the second time point, determining the time duration of positive pressure conduction; and obtaining a third time point when the air pressure of the suction cup reaches a second air pressure value after the air pressure of the suction cup passes through the zero point, and obtaining a third air pressure value after the vacuum breaking of the wafer vacuum suction cup after the third time point, so as to determine that the vacuum breaking of the wafer vacuum suction cup reaches a safe air pressure threshold value based on the third air pressure value. The vacuum breaking speed of the wafer vacuum chuck is increased, and the material safety is improved.

The utility model relates to a motorcycle straight push upper pump structure which comprises a handle and a pump body with one end hinged to the handle, a piston containing cavity with one end open is formed in the end, facing the handle, of the pump body, a piston is arranged in the piston containing cavity, a piston ejector rod is installed in the piston, and the handle comprises a holding part and an operation part connected with the holding part. A pressure switch is installed on the side face, facing the operation portion, of the pump body, and a holding distance adjusting device is arranged at the end, away from the piston containing cavity, of the operation portion. A relay structure which can abut against the holding distance adjusting device, the piston ejector rod and the pressure switch in the non-braking state is installed in the containing cavity. The direct-push upper pump has the advantages of being high in integration degree, more compact and easy to assemble due to the arrangement of the relay structure.

The present invention discloses a bogie axle box for high-speed trains with an overload self-adjusting structure, comprising a bogie housing, an axle box housing, a gauge changing mechanism, and further comprising: an air spring, the air spring being located at the gap between the bogie housing and the axle box housing; a support member for reducing the friction between the axle box housing and the axle box support rail, the support member being arranged at one end of the axle box housing in contact with the axle box support rail; a first groove, the first groove being arranged on the outside of the axle box housing; a detection member acting on the first groove and the sunken track of the track changing device, and being able to inform the driver of the gauge changing state. In the present invention, when the gauge change is completed and the wheel pair distance is adjusted, the second connecting rod is separated from the pressure switch under the elastic action of the first spring and the second spring, thereby disconnecting the circuit, reminding the operator in the control room that the limit pin has been re-locked, and the real-time state of the gauge changing operation can be effectively informed to the operator in the control room.

A device (7) for regulating the delivery volume of a positive displacement pump (1) comprises a control piston (8) displaceable in a recess (9) and a cam ring (4), via the position of which the delivery volume of the positive displacement pump (1) can be adjusted. A pressure switching valve (12) is arranged in a leakage line (11) connected to the recess (9). This pressure switching valve closes the leakage line (11) when a specific pressure acting on it is exceeded.

The invention provides a laser aging detection method and device, and the method comprises the steps: receiving a pressure signal of a to-be-detected laser group for triggering a pressure switch in response to a received aging command, and opening an electromagnetic valve in response to the pressure signal, so as to enable cooling water in a light receiving cylinder to circulate; switching on the laser group to be detected, and determining a first aging state according to the flow of the cooling water; determining a second aging state of the to-be-detected laser group through an external interface of the to-be-detected laser group; calling state data in the laser group to be detected, and determining a third aging state according to the state data; and after a preset time period, aging detection is stopped, and a detection result is uploaded. Safe aging and automatic testing of the laser are achieved, the laser testing efficiency is improved, laser data are inquired in real time in the aging process, aging is automatically stopped when the data are abnormal, and the accident occurrence probability is reduced.

The invention relates to the technical field of intelligent control and predictive maintenance of heating water heaters, in particular to a wind pressure switch control system and method for a heating water heater. The method comprises the following steps of: extracting a starting pressure curve slope, a steady-state pressure fluctuation frequency spectrum entropy and a shutdown pressure decay time constant by collecting a time sequence pressure signal in a working period of a fan so as to generate a dynamic feature vector; comparing the vector with a preset reference health vector by the system, and resolving the health state confidence and the state deviation drift rate of the system in real time; when the health confidence coefficient is lower than a safety threshold value or the deviation drift rate is too high, the system executes forced safety locking; if the health degree is slightly reduced, the pre-purging time of the fan is actively prolonged as compensation; according to the method, conversion from fault response to predictive maintenance is achieved, early performance degradation symptoms such as fan abrasion and air duct dust deposition can be recognized in advance, post-maintenance is converted into beforehand intervention, and the fault rate and maintenance cost are effectively reduced.