36results about How to "Realize self-protection" patented technology

The invention discloses a device for preparing a Ni-SiC composite coating on the inner surface of a hollow workpiece. A lower water outlet pipe and an upper water outlet pipe which are parallel and are arranged in an up-and-down manner are arranged in a liquid storage tank. After electroplating liquid flowing out of the upper water outlet pipe and electroplating liquid flowing out of the lower water outlet pipe are converged, the mixed electroplating liquid flows towards a sealed electroplating table under the drive force of an electroplating liquid circulation pump, and an electromagnetic flow meter is adjusted to control the volume flow rate of the electroplating liquid flowing towards the sealed electroplating table. After composite electroplating is completed in the sealed electroplating table, the electroplating liquid flows back into the liquid storage tank through a loop. One end of an air discharging pipe is connected with an outlet of a compressed air pump, and the other end of the air discharging pipe is connected in the liquid storage tank. The device is a the sealed and continuous-circulation electroplating device developed based on a traditional non-closed immersion type electroplating device and has the beneficial effects of being reasonable in structure, reliable in operation and convenient to use and operate, and the Ni-SiC composite coating with the good quality can be obtained on the inner surface of the hollow workpiece.

The invention discloses a flexible display panel, which comprises a first substrate, a thin film transistor array, a light-emitting component layer and a self-heating layer, wherein the thin film transistor array and the light-emitting component layer are arranged on the first substrate in sequence; the self-heating layer is arranged on the flexible display panel; and the self-heating layer covers at least a part of a bendable area of the flexible display panel, and the self-heating layer generates heat when pressed. The flexible display panel can improve material flexibility of the bendable area, reduce damage of the bending force to the flexible display panel and realizes self protection of the bendable area.

The present invention is suitable for the automatic navigation vehicle field, and provides a method and system for pavement detection of an automatic navigation vehicle. The method comprises: performing real-time detection of barriers hanged or having height being lager than the chassis height of an automatic navigation vehicle on a front pavement, and generating obstacle avoidance alarm information when detected barriers cannot be avoided; performing real-time detection of the barriers on the front pavement through a contact detection mode, and generating collision avoidance alarm information when the barriers are detected; performing real-time detection of the dimensions of the barriers or the dimensions of a channel on the front pavement, and generating path-finding alarm information when the detected barriers or the channel cannot be spanned; and according to the obstacle avoidance alarm information, the collision avoidance alarm information and the path-finding alarm information, controlling the operation state of the automatic navigation vehicle. The method and system for pavement detection of the automatic navigation vehicle detect channels or barriers which cannot be spanned, fine stick objects difficult to be detected or hanged barriers on the front pavement to eliminate a detection blind area, allow the automatic navigation vehicle to avoid barriers or channels and realize self protection.

The invention discloses a powder core welding wire for self-protecting electric-arc welding additive manufacturing of austenitic stainless steel. The powder core welding wire comprises a stainless steel coating and a powder core, wherein the coating and the powder core comprise the following components in percentage by mass relative to the total mass percentage of the welding wire: 0.001-0.1% of C, 0.01-1.0% of Si, 2.0-6.0% of Mn, 17.0-27.0% of Cr, 1.0-10.0%of Ni, 0.1-3.0% of Mo, 2-3% of Al, 1-2% of Mg, 0.001-0.5% of Ti, 5-15%of LiBaFe, 2-5% of BaF2, 0.001-0.35% of rare rearth oxide, 1-2% of LiFeO2, 0.1-2% of Zr, not greater than 0.03% of P, not greater than 0.01% of S, and 0.5-1% of rare earth metal, wherein the rare earth metal is a mixture of Ce and La. With the adoption of the powder core welding wire for the self-protecting electric-arc welding additive manufacturing of the austenitic stainless steel, self-protection in welding is realized; in addition, all components of the powder core welding wire are synergistically acted to refine crystal grains while solidifying additive materials, and thus a cladding metal with high toughness and plasticity can be obtained.

The invention discloses a disk type permanent magnetic transmission device with a self-protection function. The disk type permanent magnetic transmission device includes an inner rotor and an outer rotor; the inner rotor comprises an inner rotor shaft, an inner rotor rotating disk, a radial fixed guide assembly and a plurality of springs; the inner rotor rotating disk is formed by enclosing a plurality of concentrically-arranged sector disks; the size of an inner cavity formed by enclosing the plurality of sector disks is a variable coupling area; the outer rotor comprises an outer rotor shaft, outer rotor movement disks and electric conduction metal disks. With the above structure adopted, speed adjustment can be realized through adjusting the variable coupling area, and therefore, axial space can be saved; when the inner rotor or the outer rotor are locked, electromagnetic forces between the inner rotor rotating disk and the electric conduction metal disks is electromagnetic repulsive forces; each sector disk can move fast towards a place where radius is minimum along the radial fixed guide assembly under the action of the electromagnetic repulsive forces and the elastic force of the springs, so that the variable coupling area can be decreased; and permanent magnets and the electric conduction metal disks are staggered, and therefore, eddy-current loss can be decreased, and self-protection of a mechanism can be realized.

The invention discloses a cloud platform service method and system for realizing access control based on a state machine, relating to the technical field of access control. Access control of different grades of services in a cloud platform server is realized through a state machine mechanism; different access permissions are granted to users through an authorization module in the cloud platform server; a processing module processes user request messages according to the permissions, and gives correct responses; when a user request is beyond the permission for a certain time, the user can temporarily lose the right for accessing the cloud platform server; the problem can be recovered through a timer mechanism; when users of different permissions request for the same service, the user having relatively high permission is preferably processed; the cloud platform server also can actively shield an illegal user; therefore, the security of the whole cloud platform is ensured; users can access all services in a permission range itself; and service grade values correspond to user permission values.

The invention discloses an anti-damage self-protection type new energy automobile charging pile. The invention relates to the technical field of new energy vehicles. The charging pile includes a base,a detection assembly is arranged in the base; waterproof cloth is arranged on the outer side of the upper surface of the base; a buoyancy airbag is arranged at the top end of the waterproof cloth; the buoyancy air bag is fixed through a fixing clamping ring. The fixed clamping ring is connected with the lifting ring through a connecting rod; the charging pile is scientific and reasonable and safeand convenient to use, the detection assembly is arranged to detect whether it rains or not, in rainy days, the fixation of the electromagnet to the lifting ring is relieved; accumulated rainwater isintroduced into a water inlet groove through a water inlet hole; when a water level buoyancy air bag in the water inlet groove floats upwards to provide buoyancy, the buoyancy air bag continuously rises along with the continuous rising of the water level, the charging pile is prevented from being damaged by the accumulated water flow, it can be effectively guaranteed that the charging pile is notdamaged in rainy days, and the self-protection of the charging pile is achieved.

The invention provides an underwater camera, which combines a sensor technology and a controller principle to realize autonomous protection of the underwater camera. The underwater camera adopts a holder structure to realize automatic movement of a camera lens. The underwater camera applies an inflation device to inflate a graphene film, so that it is guaranteed that the film and external water pressure are the same in pressure intensity. The adopted graphene film has the advantages of corrosion resistance, transparency and no influence on the shooting effect.

The invention relates to the technical field of hydraulic equipment, and discloses self-protection type hydraulic equipment which comprises a base, a supporting frame is fixedly installed at the top end of the base, a hydraulic cylinder is fixedly installed on the supporting frame, a pressing plate is fixedly installed at the output end of the hydraulic cylinder, and a supporting table is arranged at the top of the base. The supporting table and the pressing plate are oppositely arranged, a protection barrel is slidably installed in the base, the supporting table is arranged in the protection barrel, and a transmission mechanism used for driving the protection barrel to move relative to the base is arranged in the base. When the pressing plate moves downwards, the transmission mechanism drives the protection barrel to move upwards, so that a workpiece is gradually surrounded in the protection barrel, the situation that fragments generated in the pressing process of the workpiece are splashed out to impact hydraulic equipment is avoided, self-protection of the hydraulic equipment is achieved, and the safety during use is improved.

The invention discloses a protection method for a high-speed rail regenerative braking energy feedback system, which comprises the following steps of detecting a real-time signal of a key position ofthe system, judging a fault occurrence position and a type by a control module, and performing tripping, reclosing and inter-tripping protection actions according to the fault type. The protection method for the high-speed rail regenerative braking energy feedback system has the beneficial effects that (1) a detection sensor is arranged at the key position of the high-speed rail regenerative braking energy feedback system, protection of the high-speed rail regenerative braking energy feedback system is completed through detection, judgment and action, and the vacancy of the system protection method is filled up; (2) fault detection and protection inter-tripping logic can be used for timely and accurately processing different types of faults of the regenerative braking energy feedback system of the high-speed rail under different operation conditions, so that the self-protection of the fault feedback equipment of the substation is realized, and the fault of the feedback equipment does not influence the power supply of the substation; and (3) by detecting the running state of the 10kV power supply system of the rail, the island state can be recognized in time, and island running of the grid-connected inverter is prevented.

The invention discloses a USB connection port assembly comprising a female connection port and a male connection port adapted to the female connection port. In addition, the USB connection port assembly also includes a locking member, a control module and a detecting element. The male connection port is connected by being inserted into the female connection port so as to realize data transmission.When the detecting element detects that the male connection port is pulled out of the female connection port, the control module determines whether a pull-out condition is met currently; if not, thelocking member controls continuous connection between the male connection port and the female connection port. In addition, the invention also discloses a self-protection method of the USB connectionport assembly and a host. Therefore, the USB connection port assembly is locked during data transmission and is delocked and is drawn out after data transmission ending, so that self-protection of theUSB connection port assembly is realized and the safety and practicability of the USB connection port assembly are improved.

The invention discloses a device for preparing a Ni-SiC composite coating on the inner surface of a hollow workpiece. A lower water outlet pipe and an upper water outlet pipe which are parallel and are arranged in an up-and-down manner are arranged in a liquid storage tank. After electroplating liquid flowing out of the upper water outlet pipe and electroplating liquid flowing out of the lower water outlet pipe are converged, the mixed electroplating liquid flows towards a sealed electroplating table under the drive force of an electroplating liquid circulation pump, and an electromagnetic flow meter is adjusted to control the volume flow rate of the electroplating liquid flowing towards the sealed electroplating table. After composite electroplating is completed in the sealed electroplating table, the electroplating liquid flows back into the liquid storage tank through a loop. One end of an air discharging pipe is connected with an outlet of a compressed air pump, and the other end of the air discharging pipe is connected in the liquid storage tank. The device is a the sealed and continuous-circulation electroplating device developed based on a traditional non-closed immersion type electroplating device and has the beneficial effects of being reasonable in structure, reliable in operation and convenient to use and operate, and the Ni-SiC composite coating with the good quality can be obtained on the inner surface of the hollow workpiece.

A solid-state battery having an overheat self-protection function belongs to the field of batteries. The specific scheme is as follows: the solid-state battery having the overheat self-protection function comprises a positive electrode, a negative electrode and a composite solid-state electrolyte positioned between the positive electrode and the negative electrode, and the composite solid-state electrolyte comprises a solid-state ion conductor material and an insulating thermal expansion material. The solid-state battery mainly aims at the characteristic that the electrolyte of the solid-statebattery does not flow, and the characteristic that the volume of an insulated solid thermal expansion material is expanded under a high-temperature condition is utilized. When the battery is locallyoverheated, the thermal expansion material corresponding to the local area is subjected to volume expansion, so the ion conduction impedance inside the composite solid electrolyte increases sharply, the internal current of the battery drop sharply, continued heating is prevented, and the self-protection effect of the battery in the case of overheating is achieved; and when the temperature of the battery is reduced, the thermal expansion material is recovered to the initial state, and the ion path of the region is recovered.

The invention discloses a USB connection port assembly comprising a female connection port and a male connection port adapted to the female connection port. In addition, the USB connection port assembly also includes a locking member, a control module and a detecting element. The male connection port is connected by being inserted into the female connection port so as to realize data transmission.When the detecting element detects that the male connection port is pulled out of the female connection port, the control module determines whether a pull-out condition is met currently; if not, thelocking member controls continuous connection between the male connection port and the female connection port. In addition, the invention also discloses a self-protection method of the USB connectionport assembly and a host. Therefore, the USB connection port assembly is locked during data transmission and is delocked and is drawn out after data transmission ending, so that self-protection of theUSB connection port assembly is realized and the safety and practicability of the USB connection port assembly are improved.

The invention relates to the related technical field of agricultural machinery, and discloses an integrated deep mud rotary cultivator suitable for culture in hilly and mountainous areas, the integrated deep mud rotary cultivator comprises an internal combustion engine mechanism and a speed regulating mechanism, the surface of the internal combustion engine mechanism is fixedly provided with a housing for protecting the internal combustion engine mechanism; and a control mechanism for integrally controlling the device is fixed on one side of the internal combustion mechanism, a crawler walking mechanism for advancing is arranged at the bottom of the internal combustion mechanism, the speed regulating mechanism is arranged on one side of the control mechanism, and a seat is fixedly mounted on the speed regulating mechanism. The crawler walking mechanism is arranged, a crawler plate for walking is arranged on the crawler walking mechanism, and meanwhile, a rotary tillage mechanism is arranged, so that in the advancing process of the crawler plate, the rotary tillage mechanism can be promoted to perform rotary tillage on land, the crawler plate can adapt to different terrains of a mountainous area, and the environment adaptability of the equipment is improved; and finally, the purpose of mechanized rotary tillage of mountainous land is achieved.

The invention provides a safety control method for a blast furnace minter process slag treatment granulation water supply system. The safety control method comprises the following steps of: (1) setting a system, i.e., presetting the number of working pumps required by normal work and the number of standby pumps required for normal work, presetting each parameter index and presetting duration for each parameter exceeding a preset index range; (2) acquiring a signal; (3) pre-starting state control; (4) controlling an operation state; and (5) ending state control, i.e., closing if an accidental water pipe pneumatic value is in an open state at the end of iron discharge. According to the safety control method, technological actual conditions are closely combined, a key parameter is selected to be monitored in real time, automatic processing is performed on the monitored parameter, double control is performed in pre-starting and operation processes, self-protection of the granulation water supply system is realized, high early warning and accident handling capacities are achieved, the stability of the system is improved, and the operation cost of the system is reduced.

The invention discloses a rotary tooth type waste film picking machine with self-protection film picking teeth. The rotary tooth type waste film picking machine comprises a rack, a traction frame, a supporting wheel, a film rolling shaft, a horizontal roller, a conveying chain, a film picking mechanism, transmission mechanisms and the like. The traction frame and a gear box are arranged on the front upper portion of the rack. The supporting wheel, the film rolling shaft and a pressing roller are sequentially arranged below the rack from front to back. The conveying chain is arranged on the upper middle portion of the rack. The film picking mechanism is arranged on the rear upper portion of the rack. The transmission mechanisms are arranged on the two sides of the rack. According to the design, springs are additionally arranged on the film picking teeth so that the film picking teeth can be self-protected, the service life of parts is prolonged, and the operation reliability of the parts is improved; due to the design that bearings are arranged between a planetary plate and a fixed plate, the friction force between the planetary plate and the fixed plate is reduced, the flexibilityof the film picking mechanism is improved, and power consumption is reduced; the horizontal roller is additionally arranged in front of the film picking mechanism, thus, it can be guaranteed that thefilm picking teeth work on the same plane, and the picking rate is increased; due to the design of a tooth frame plate protection ring, mulching films are effectively prevented from winding the film picking shaft; and due to the same-direction rotation design of the film rolling shaft and the conveying chain, the film rolling success rate is increased.

The invention relates to a control circuit for a car air conditioner air blower. The control circuit comprises a processor, an air blower load circuit module, a PWM port T1, an air blower control port T2, an IOC port T3, a first audion Q1 and a second audion Q2. The air blower control port is grounded through a resistor R3, the IOC port is connected with the air blower control port through a resistor R4, the air blower control port is grounded through a capacitor C1, and the IOC port is grounded through a capacitor C2. By means of the control circuit, the circuit structure is simple, the cost is low, and the transportability is good; the sensibility to the temperature is low, the PWM signal delay and distortion filter is small, and the anti-jamming capability is high; self protection can be achieved under the voltage surge, and the circuit reliability is good.

The invention discloses an excessive electric heating self-extinguishing lamp which comprises a storage card and a mold-permeating grease exterior; a pointer is connected with the right end of the storage card; the lower surface of the pointer is connected with the upper end of a countercurrent handle; the lower end of the countercurrent handle is connected with a current tower; the left end of the storage card is blocked in a blocking slot above the storage card; an indicating handle is connected with the lower surface above the storage card; the lower end of the indicating handle is insertedinto a sealing template; two current racks are arranged on the lower end of the sealing template; an original wedge head is arranged above the storage card, so that the problem of connection error can be reduced and assembling is more convenient; the sealing template and the heating electric panel are additionally arranged, so that the heating electric panel can stretch under heating state when aheavy current is generated by the lamp, power-off protection of illumination can be realized and self-protection of illumination lamp can be realized.

The invention discloses a semiconductor device and a preparation method thereof, and relates to the field of semiconductor technology. The semiconductor device of the invention includes a substrate and a semiconductor layer arranged on the substrate. The semiconductor layer is divided into an active area and a The passive area; the semiconductor layer in the active area is provided with source, drain, gate, source field plate and ground back hole, and the semiconductor layer in the passive area is provided with a drain pad and a gate pad. plate, the drain is electrically connected to the drain pad, one end of the gate is connected to the gate pad through the source field plate, and the other end is located between the source and the drain, and the gate pad is at least partially arranged in the passive area, The source is grounded through the ground back hole, and the semiconductor layer in the active region is also provided with a Schottky junction. The positive electrode of the Schottky junction is electrically connected to the gate pad, and the negative electrode is electrically connected to the source through a two-dimensional electron gas. , the forward turn-on voltage of the Schottky junction is greater than the forward turn-on voltage of the gate. The semiconductor device provided by the invention can realize self-protection.

The invention discloses an anti-destructive self-protecting charging pile for new energy vehicles, which relates to the technical field of new energy vehicles and includes a base, a detection component is arranged inside the base, and a waterproof cloth is arranged outside the upper surface of the base. The top of the waterproof cloth is provided with a buoyancy airbag, the buoyancy airbag is fixed by a fixed snap ring, and the fixed snap ring is connected with the lifting ring through a connecting rod. Rain, when it is raining, release the electromagnet from fixing the lifting ring, and use the water inlet hole to introduce the accumulated rainwater into the water inlet tank. The continuous rising, avoiding the damage of the accumulated water flow to the charging pile, can effectively protect the charging pile from being damaged in rainy weather, and realize the self-protection of the charging pile.

The invention discloses a method for remotely closing downhole units on the ground of a rotary steerable system, which belongs to the technical field of oil drilling, and is characterized in that it comprises the following steps: a. Calculate the pressure difference P between the front and back of the water eye of the drill bit 1 ; b. Calculation of the delay loss △P; c. Calculation of the pressure P at the standpipe after starting the downlink device 2 ; d. According to the pressure balance relationship, the pressure drop of the throttle valve of the downlink device is also P 2 , calculate the opening area S of the throttle valve of the downlink device 1 ; e, according to the throttle valve opening and the throttle valve opening area S 1 Adjust the throttle valve to the calculated opening, so that the split flow automatically reaches the set split ratio; through the detected flow change in the underground, it automatically corresponds to the function block that needs to be cut off, and closes the downhole unit. The invention can realize self-protection and continuous operation of the whole rotary steerable system, reduce the frequency of drilling inspection when the rotary steerable system is abnormal, improve the efficiency of drilling operation and reduce the cost.

The application discloses a flexible display panel, including a first substrate, a thin film transistor array and a light-emitting element layer arranged on the first substrate in sequence; a self-heating layer arranged on the flexible display panel; the self-heating layer covers the flexible display At least a portion of the panel is bendable, and the self-heating layer generates heat when compressed. The flexible display panel can improve the material flexibility of the bendable area, alleviate the damage of the flexible display panel by the bending force, and realize the self-protection of the bending area.

The invention discloses a breakage-proof self-protection type new energy automobile charging pile, and relates to the technical field of new energy automobiles. The breakage-proof self-protection type new energy automobile charging pile comprises a base, a detection assembly is arranged in the base, waterproof cloth is arranged on the outer side of the upper surface of the base, a buoyancy air bag is arranged at the top end of the waterproof cloth, and the buoyancy air bag is fixed through a fixing clamping ring; and the fixing clamping ring is connected with a lifting ring through a connecting rod. The charging pile is scientific, reasonable and safe and convenient to use, the detection assembly is arranged, whether it rains or not can be detected, when it rains, fixing of the lifting ring by an electromagnet is relieved, accumulated rainwater is introduced into a water inlet groove through a water inlet hole, when the water level buoyancy air bag in the water inlet groove floats upwards to increase buoyancy, the buoyancy air bag continuously rises along with continuous rising of the water level, damage to the charging pile caused by accumulated water flow is avoided, the charging pile is not damaged in rainy days, and self-protection of the charging pile is achieved.

The invention provides a self-protection battery and belongs to the technical field of a battery. The battery comprises a battery main body, wherein at least one of an anode pole and a cathode pole of the battery main body is composed of two sub-poles; one of the two sub-poles is connected with the battery main body; the other sub-pole is connected with an external device; an inter-pole gap exists between the two sub-poles; the two sub-poles are connected with each other through a pole connector; the pole connector is made from a conductor material, is inserted into the sub-poles and is in sliding connection with the sub-poles; the battery further comprises a control chip, a lifting mechanism and a temperature measuring component which are arranged on the battery main body; the control chip is respectively connected with the lifting mechanism and the temperature measuring component; the lifting mechanism is located on one side of the pole connector and is connected with the pole connector; a temperature measuring end of the temperature measuring component is inserted into the battery main body. The self-protection battery can detect the temperature in the battery and can automatically break circuit when the interior temperature of the battery is ultrahigh.

Disclosed are an encoding / decoding method, device and system. The encoding method comprises: adding encoding information and a predefined 2-bit flipping bit regarding whether to perform flipping on sent valid data and the encoding information or not before the sent valid data to enable a decoding device to determine whether to generate a flipping bit sending error and whether to perform flipping on received valid data according to the value of a received flipping bit and the value of the predefined flipping bit, wherein the encoding information comprises a 1-bit synchronization header; and constituting the sent valid data, the encoding information and the flipping bit into a sent data frame. By means of a 2-bit flipping bit, the present invention enables an encoding / decoding system to effectively reduce the bit error rate of the system.

The invention relates to a chain driving type cable winding device with a self-protection function. The chain driving type cable winding device consists of a winch component, a manual end component, a motor component, a control component, a frame and a driving chain, wherein the winch component consists of a left disk, a right disk, a middle disk, a winding drum and a rotating shaft; both ends ofthe rotating shaft are arranged on the frame through rolling bearings; the winding drum is integrally connected with the left disk, the right disk and the middle disk; the rotating shaft is fixed on the left disk and the right disk; an outer end extension shaft of the rotating shaft is provided with a chain wheel; the motor component consists of a motor, a speed reducer, an electromagnetic clutchand the chain wheel; the motor-driven moment or the self-protection during the hinderance of a winding system can be transmitted by the suction and the separation of the electromagnetic clutch; the manual end component consists of a bolt, a check ring, a manual shaft, a handle and a flywheel; and the chain wheel is meshed with the flywheel through a transmission chain to fulfill the aim that cables are manually or electrically wound on the winding drum. By the chain driving type cable winding device, time-saving, labor-saving and ordered winding and unwinding of large-diameter and large-length cables can be completed.

The invention discloses a cloud platform service method and system for implementing access control based on a state machine, and relates to the technical field of access control. The invention realizes the access control of different levels of services in the cloud platform server through the state machine mechanism, grants users different access rights through the authorization module of the server in the cloud platform, and the processing module processes user request messages according to the rights and gives correct responses. When a user requests more than a certain number of permissions, the user will temporarily lose the right to access the cloud platform server, which can be recovered through the timer mechanism; when users with different permissions request the same service, users with higher permissions will be given priority. The cloud platform server can also actively block illegal users to ensure the security of the entire cloud platform. Users can access various services within the scope of their own authority, and the service level value corresponds to the user authority value.

The invention discloses an intelligent vacuum circuit breaker with self-diagnosis and self-protection functions, and particularly relates to the technical field of vacuum circuit breakers, the intelligent vacuum circuit breaker comprises a bottom plate and a vacuum circuit breaker body, the vacuum circuit breaker body is arranged at the top of the bottom plate, and the outer side of the vacuum circuit breaker body is sleeved with a protection cover; a temperature sensor and a humidity sensor are fixedly arranged on the surface of the inner wall of the top of the protection cover. The temperature and humidity in the cover are monitored in real time through the temperature sensor and the humidity sensor, when the temperature is too high, the power of the miniature fan is increased, the temperature becomes low, and the humidity is large, the miniature fan is adjusted to reduce the rotating speed, moisture is dried through heat of the vacuum circuit breaker body, normal operation of the vacuum circuit breaker body is ensured, and the service life of the vacuum circuit breaker is prolonged. When the smoke alarm detects smoke, the single-chip microcomputer is used for controlling the electromagnetic valve to be opened, dry powder rapidly flows out of the round pipe to extinguish fire, manual operation is not needed, the self-diagnosis and self-protection effects of the device are achieved, and the device is very convenient to use.