73results about How to "Safe and effective protection" patented technology

The invention discloses a copyright protection and verification method and device based on a block chain. The copyright protection method comprises: obtaining first file data of an original work uploaded by a first user and first work metadata information of the original work; hash calculation is carried out on the first file data and the first work metadata information to obtain a first Hash value, the first file data, the first work metadata and the first Hash value are stored in a block chain, and a first transaction identifier is generated; and generating a first verification identifier according to the first transaction identifier, wherein the first transaction identifier and the first verification identifier are used for copyright ownership verification. By implementing the method and the device, the transaction identifier uniquely corresponding to the original work is generated based on the original work and stored in the block chain, so that the information related to the workcan be safely and effectively protected, the work information is prevented from being easily leaked and tampered, and the rights and interests of a work author are effectively protected.

The invention discloses an air and water hybrid cooling high-speed permanent-magnet motor and belongs to the technical field of motors. The large-power high-speed permanent-magnet motor comprises a casing, a cooling water jacket, a stator core, a stator radial air duct, a stator inner air duct, a motor rotor, an outer rotor axial fan, an outer rotor fan fixing frame and two sliding bearings. The stator core is divided into two sections, the radial air duct is reserved in the middle, and the inner air duct is reserved in a stator slot close to the air gap position. The cooling water jacket is arranged outside the stator casing, a spiral water way is arranged in the water jacket, and water flows into the water way from the middle of the water way and flows out from a left spiral water outlet and a right spiral water outlet which are arranged at two ends of the water way. The air and water hybrid cooling high-speed permanent-magnet motor can mechanically solve the problem that a permanent magnet is broken when bearing large pulling stress during high-speed rotating, further solves the problems that the large-power high-speed motor is large in loss density, difficult in heat dissipation and over high in temperature rising, and prevents the permanent magnet from having irreversible demagnetization easily at high temperature.

The invention relates to an open fireproof and heat insulation hierarchical compound fabric. The open fireproof and heat insulation hierarchical compound fabric is characterized in the structure of the hierarchical compound fabric, i.e. ,one surface of the fabric can bear the high temperature or high heat action of a strong heat flow open fire environment, and the other surface is kept at temperature of 45 to 50 DEG C approximate to the safety temperature of human skin. The compound structure of the compound fabric sequentially consists of a metal foil felt heat radiation reflection layer, a phase change material gradient compound felt heat absorption layer and a heat insulation comfort layer. The compound fabric has a natural thickness of 5 to 15mm, is actually 3 to 8mm thick after being compacted, is 500 to 1,500 grams per square meter, is a totally-inclosed, sewn and adhered protective material for fire protection and heat insulation, and can be used for physical protection and environmental heat insulation in special high-temperature places of fire control, military affairs, expedition, industry and the like.

The invention relates to a resource operation safety authentication method and system under a cloud calculation environment. The system comprises a web client side, an authentication server and a cloud resource background server. In the safety authentication process, a user carries out all operation through the web client side, an operation request is sent to the cloud resource background server, and the cloud resource background server verifies and passes the operation request and sends the request information to the authentication server to be authenticated; the authentication server divides the resource operation types into different levels, and different authentication modes are selected according to the levels; the web client side acquires the authentication modes and notifies the user to carry out authentication; after the user inputs authentication information, the web client side sends the authentication information to the authentication server, and corresponding operation is carried out only when the authentication information is authenticated to be valid; meanwhile, the authentication complexity level can be gradually increased according to the increasing of the resource operation sensibility; thus, safe and effective protection is provided for resource operation under the whole cloud calculation environment.

This invention relates to an account number protecting device in a computer network and a method, in which, the protection device includes an account number cipher test module, a transfer module and an information process module, said account number test module and the transfer module are placed at the customer end, said information process module is placed at the server end or connected with it, said information process module includes modules of generation, receiving, sending and confirmation of verification code, said transfer module can send generation request in short messages to the generation module of the verification code and feeds back the verification code filled by a user to its receiving module.

An igniter squib testing device comprises a first switch (Q1), a load interface (J2), an igniter squib interface (J1) and a controller (7), wherein, one end of the first switch (Q1) is connected with one end of the igniter squib interface (J1) in series by the load interface (J2), the other end of the first switch (Q1) and the other end of the igniter squib interface (J1) are respectively used for being connected with a positive pole and a negative pole of a power supply, and the controller (7) is connected with a control end of the first switch (Q1) and is used for receiving enabling signals, controlling the first switch (Q1) to close and controlling the first switch (Q1) to be cut off by preset time. The igniter squib testing device accurately controls the conduction time of an ignition squib, thus providing effective and safe protection for the test process of the ignition squib.

The invention discloses a motorist active safety protection device. The device comprises a velocity sensor, a range radar, a single-chip microcomputer, an air distributor, a high-pressure air bottle, pipelines, an air sac bin, a hat holding air sac, a safety belt air sac, a left air sac, a right air sac and shank air sacs. The velocity sensor is mounted on the inner side face of the left side of a front hood machine bin of an automobile. The range radar is mounted on a hub of a left front wheel of the automobile. The single-chip microcomputer is mounted on a driving bin control panel and connected with the velocity sensor and the air distributor. The air distributor and the high-pressure air bottle are mounted at the bottom of a driver seat. The air distributor is connected with an automobile storage battery and the single-chip microcomputer. All the air sacs are placed in the air sac bin. The hat holding air sac is mounted in a headrest of the driver seat. The safety belt air sac is mounted on the inner side of a safety belt. The left air sac and the right air sac are mounted on the left side and the right side of the seat. The shank air sacs are mounted in front of the bottom of the seat. All the air sacs are connected with the air distributor through the pipelines. The air sacs are single-layer air sacs and are made of nylon materials. The air sacs can protect the head, the body and the legs of a driver all around when burst open.

The invention provides a method and apparatus for identifying a pseudo base station, and a terminal. The method comprises the following steps: acquiring preset parameters in the LTE network where theterminal is located; when the preset parameters meet the corresponding pseudo base station judgment conditions, identifying the corresponding LTE base station in the corresponding network as the pseudo base station and / or the GSM base station corresponding to the LTE base station as the pseudo base station. The invention identifies that the corresponding LTE base station in the corresponding network is a pseudo base station and / or the GSM base station corresponding to the LTE base station is a pseudo base station by monitoring the preset parameters in the LTE network in which the terminal is located, In the process of cell selection and cell reselection, the defense scheme can be adopted before starting the registration process to provide a more secure and effective protection for the terminal.

The invention relates to the technical field of transport packaging, in particular to a transport packaging device with the protection function. The transport packaging device comprises a bottom plate, wherein a packaging outer box is installed in the middle of the upper surface of the bottom plate through a plurality of positioning mechanisms, and the bottoms of two sides of the packaging outer box are fixedly connected with the bottom plate through a plurality of fixing mechanisms; two buckles are fixedly installed on the upper parts of two sides of the packaging outer box, and each buckle is sleeved with a corresponding rope buckle belt; two pull ropes are respectively installed on two sides of the bottom plate through two tensioning mechanisms; an elastic telescopic mechanism is fixedly connected between each pull rope and the corresponding rope buckle belt; a packaging inner box is installed at the inner bottom of the packaging outer box through a plurality of damping mechanisms,a sealing cover is fixedly installed at the upper end of the packaging inner box, and metal elastic sheets are fixedly installed at the middle of two sides of the packaging inner box; and a connectingplate is fixedly installed at one side of each metal elastic sheet. The transport packaging device with the protection function is stable in installation structure, convenient to disassemble and assemble, high in damping performance and practical applicability, and worthy of popularization.

The invention discloses double-surface flame-retardant-coating fabric. The double-surface flame-retardant-coating fabric comprises a fabric body, wherein the fabric body comprises an embossing layer, a wearable layer, a fluorescent layer, an anti-wrinkling coating, a waterproof coating, a heat preservation layer, a high-temperature-resistant layer, a first flame-retardant coating, a base cloth layer, a second flame-retardant coating and a breathing coating, wherein the wearable layer is arranged on the lower surface of the embossing layer; the fluorescent layer is arranged on the lower surface of the wearable layer; the anti-wrinkling layer is arranged on the lower surface of the fluorescent layer; the waterproof coating is arranged on the lower surface of the anti-wrinkling coating; the heat preservation layer is arranged on the lower surface of the waterproof coating; the high-temperature-resistant layer is arranged on the lower surface of the heat preservation layer; the first flame-retardant coating is arranged on the lower surface of the high-temperature-resistant layer; the base cloth layer is arranged on the lower surface of the first flame-retardant coating; the second flame-retardant coating is arranged on the lower surface of the base cloth layer; the breathing coating is arranged on the lower surface of the second flame-retardant coating. The double-surface flame-retardant-coating fabric has the characteristics of being high in flame retardancy, resistant to high temperature, high in intensity, and high in flexibility; the double-surface flame-retardant-coating fabric can safely and effectively protect workers working in a laser cutting environment.

The invention discloses a six-minute walk training rehabilitation system, which comprises a mobile phone terminal APP system, a bluetooth beacon point, and a blood oxygen pulse rate measurement device. The mobile phone terminal APP system comprises a bluetooth receiving and processing module. By means of the bluetooth receiving and processing module, the mobile phone terminal APP system is enabled to be in communication with the bluetooth beacon point to acquire the distance information of each beacon point. The bluetooth beacon point is capable of releasing the device identification number of its own. After that, the device identification number of the bluetooth beacon point itself is received by the bluetooth receiving and processing module and then is processed by the mobile phone terminal APP system. According to the technical scheme of the invention, the problem that the manual distance-measuring operation of a healthcare worker is labor-consuming and large in measurement error during the conventional six-minute walk testing process can be solved. meanwhile, the problem that the blood oxygen pulse rate of a rehabilitation trainee cannot be measured during the testing process can also be solved.

The invention belongs to the field of packing technology, and particularly relates to a compression resistance paper angle bead convenient to pack. The compression resistance paper angle bead convenient to pack comprises a base body with an L-shaped cross section, and is characterized in that the base body comprises a honeycomb paperboard, a wave buffering part, hardness plates and connecting parts; the base body is formed through bonding according to the sequence of one hardness plate, the honeycomb paperboard, one hardness plate, the wave buffering part and the other hardness plate sequentially from top to bottom. The connecting parts are equidistantly distributed on the outer side of the base body. The connecting parts are channels penetrating through the wave buffering part in the right-angle part of the base body. The connecting parts are metal buckles inlayed in the outer side of the base body. The compression resistance paper angle bead convenient to pack has the beneficial effects that the compression resistance paper angle bead is convenient to pack, good in compression resistance and vibration resistance effects, convenient to recycle, and more environmental-friendly, and the expenses of factories for packing is reduced.

The invention provides a three-dimensional floor building insulating system, aiming to provide a three-dimensional floor building insulating system which is stable in thermal insulation property, compatible with a wall body insulating system and advantageous for bringing an air conditioning system into play, and a construction method thereof. The three-dimensional floor building insulating systemis implemented according to the following technical proposal: the three-dimensional floor building insulating system further comprises a floor ground insulating system which is connected to the wall body insulating system; the floor ground insulating system comprises a prefabricated slab surface structure base layer, a waterproof base layer with a flashing slope formed by plastering cement grout and a multi-layer waterproof coating connected with the waterproof base layer; and a rubber-plastic insulation board connected to the floor board by a sticking insulation nail is arranged on the multi-layer waterproof coating. The construction method comprises the following steps of: unreeling wires on the ground according to an integrated wiring diagram of pipelines under the floor board, planning and designing elevated floor board supporting points, plastering a plurality of waterproof layers also serving as closed layers, sticking the insulation nail and laying the insulation board on the floor ground. The three-dimensional floor building insulating system and the wall body insulating system supplement each other to provide all-around thermal insulation measures.

The removable device for taking hold of, lifting, handling, and pouring from cooking utensils having two diametrically opposite outwardly-directed handles in the form of lugs (2), each of which has an opening (5) that is substantially parallel to the inner edge (6) of said lug (2), is characterized by the fact that it comprises a pair of removable shells (10) suitable for fitting over said lugs (2) and made of a thermally insulating material, each shell (10) presenting an internal cavity (11), which opens out laterally through an oblong orifice (13), which is suitable for receiving a lug (2) inserted through said orifice (13), and which is fitted with an internal locking / unlocking device (20) suitable for co-operating with the opening (5) in the lug (2) when received in said cavity (11).

The present invention discloses a wearable electrocardio dynamic full-true mapping intelligent defibrillator. The wearable electrocardio dynamic full-true mapping intelligent defibrillator comprises clothes, electrocardio patches, defibrillation electrode patches, a flexible energy storage device and a miniature embedded control center, and the electrocardio patches, the defibrillation electrode patches and the miniature embedded control center are detachably arranged on the clothes; and the flexible energy storage device supplies power to the miniature embedded control center and the defibrillation electrode patches and comprises a flexible water system battery and / or a flexible super capacitor. The wearable electrocardio dynamic full-true mapping intelligent defibrillator realizes long-term and continuous monitoring of 12-lead electrocardio-activity, can be used for diagnosis, prognosis evaluation and complication prevention treatments of cardiovascular diseases, sleep apnea syndromeand other diseases, can safely conduct defibrillation in time and can also effectively avoid discharge by mistake. The present invention also discloses the control method of the wearable electrocardio dynamic full-true mapping intelligent defibrillator.

The invention discloses an overvoltage protector. The protector comprises a semiconductor switch circuit and a trigger circuit, wherein a first end of the semiconductor switch circuit is connected with a first end of a protected device, a second end of the semiconductor switch circuit is connected with a second end of the protected device and is used for controlling opening / closing of the overvoltage protector, and the trigger circuit is connected with a control end of the semiconductor switch circuit and is used for triggering the semiconductor switch circuit. By the overvoltage protector, the problem that effective protection cannot be provided for the protected device or circuit due to excessive high clamping voltage provided by the overvoltage protector in the prior art is solved, and the effective and safe protection on the protected device is achieved.

An igniter squib testing device comprises a first switch (Q1), a load interface (J2), an igniter squib interface (J1) and a controller (7), wherein, one end of the first switch (Q1) is connected with one end of the igniter squib interface (J1) in series by the load interface (J2), the other end of the first switch (Q1) and the other end of the igniter squib interface (J1) are respectively used for being connected with a positive pole and a negative pole of a power supply, and the controller (7) is connected with a control end of the first switch (Q1) and is used for receiving enabling signals, controlling the first switch (Q1) to close and controlling the first switch (Q1) to be cut off by preset time. The igniter squib testing device accurately controls the conduction time of an ignitionsquib, thus providing effective and safe protection for the test process of the ignition squib.

The invention provides a document fingerprint construction method based on semantics, a storage medium and a computer device. Performing semantic analysis on the document data to obtain a plurality ofuseful words; generating A semantic fingerprint corresponding to the document data according to all the useful words. This method can protect electronic documents with similar semantics safely andeffectively, and reduce the risk of electronic document data disclosure.

The invention provides a self-destruction four-wing speculum. The self-destruction four-wing speculum comprises an upper expansion piece, a lower expansion piece, at least one side expansion piece anda positioning sleeve, wherein the upper expansion piece and the lower expansion piece are rotationally connected and positioned through an expansion positioning device, and the positioning sleeve isrotationally connected with the upper expansion piece and the side expansion pieces; and the self-destruction four-wing speculum further comprises a first expansion positioning device composed of a hook buckle expansion positioning self-destruction device, and a second expansion positioning device which is formed by meshing a second positioning hook with a second handle on the side expansion pieceand second positioning buckles above the two ends of the positioning sleeve. The self-destruction four-wing speculum is simple in structure, convenient to operate, easy to manufacture, economical, practical and safe and effective to use

The invention relates to a side slope rolling stone anti-collision device which mainly comprises a rolling stone intercepting channel arranged on a side slope, a rolling stone conveying channel communicated with the rolling stone intercepting channel and a rolling stone collecting groove formed in the bottom of the side slope, and an anti-collision intercepting mechanism is arranged on the side, away from the side slope, of the rolling stone collecting groove. The anti-collision intercepting mechanism comprises a first intercepting unit arranged at the bottom and a second intercepting unit detachably arranged on the first intercepting unit. The device has the advantages that the rolling stone intercepting channel and the rolling stone conveying channel jointly act to form a side slope rolling stone protection mechanism, side slope rolling stones are safely and effectively prevented from sliding off and causing dangerous accidents, when a certain amount of rolling stones are collected in the rolling stone collecting groove, the rolling stones are conveyed away by a truck for resource recycling. The anti-collision intercepting mechanism is arranged on the side, away from the side slope, of the rolling stone collecting groove, so that when too many rolling stones in the rolling stone collecting groove even fall out, a further protection effect can be achieved, and the rolling stones are prevented from falling off to injure passers-by or influence normal passing of a road.

The invention relates to an input / output overcurrent and overvoltage protective module of a microcomputer distributed control system, comprising a primary measurement equipment connecting end and a protected equipment fastener connecting end. A measurement signal working circuit is connected with a fuse tube F1; in the measurement signal working circuit, the positive half cycle of alternating current voltage passes through diodes D1 and D3 and the negative half cycle passes through diodes D2 and D4 to form a full-wave rectifier circuit, the rectified direct current voltage is sampled by a sampling diode W1 and enters a control electrode of a triode VT; and a collector electrode of the triode VT is respectively connected with the diodes D1 and D2, and an emitting electrode of the triode VTis respectively connected with the diodes D3 and D4. The input / output overcurrent and overvoltage protective module of the microcomputer distributed control system is protective equipment which is specially used for protecting various fasteners in a DSC measuring system from being damaged by overvoltage or overcurrent of alternation current or direct current. The protective module is applicable tovarious channels of 24VDC positive and negative logic circuits, is free from an additional power source and can be directly serially connected with a 24VDC circuit according to a positive electrode and a negative electrode. The invention can completely and effectively provide protection for various channels.

The invention discloses an information collecting and protection fixing device for unmanned aerial vehicle aviation communication. The information collecting and protection fixing device comprises a motor, a movable rod, a hydraulic body and a device body. Supporting columns are mounted on the lower surface of the device body. A sliding groove is formed in the device body. The hydraulic body is mounted at the bottom end of the inner wall of the device body. A hydraulic oil pump is mounted in the hydraulic body. The hydraulic oil pump is connected with a hydraulic cylinder through a connectingpipe. A piston is movably mounted in the hydraulic cylinder. A hydraulic rod is mounted on the piston. Connecting rods are symmetrically mounted on the two sides of the lower end of the hydraulic rod.A protective frame is mounted at the other ends of the connecting rods and slidably mounted in the sliding groove. The movable rod is movably connected to the lower end of the inner wall of the device body in an inserted mode and slidably mounted on one side of the hydraulic body through a sliding block. A camera is mounted at the lower end of the movable rod. The motor is mounted at the lower end of the inner wall of the device body. A rotating shaft is rotationally mounted on the motor. The other end of the rotating shaft is mounted in the movable rod in an engaged mode. The information collecting and protection fixing device protects the camera safely and efficiently in the landing process of an unmanned aerial vehicle.

The invention provides a voltage-dependent resistor protection jacket of an overvoltage protector. The voltage-dependent resistor protection jacket is composed of, by weight, 40-60 parts of epoxy resin, 12-20 parts of high-density polyethylene resin, 2-8 parts of phenolic resin, 1-3 parts of polytef micropowder, 3-5 parts of sepiolite powder, 3-5 parts of basalt staple fiber, 0.3-0.6 part of fumed silica, 1.5-2.5 parts of curing agent, 0.5-1 part of promoter, 0.3-0.6 part of silane coupling agent, 0.5-1 part of lubricant and 0.2-0.8 part of antioxidant. The epoxy resin, the high-density polyethylene resin and the phenolic resin are selected as basic materials, the polytef micropowder, the sepiolite powder, the basalt staple fiber and the fumed silica are matched and added into raw materials, and the raw materials are synergistic, so that the voltage-dependent resistor protection jacket has excellent corrosion resistance and aging resistance and can safely and effectively protect a voltage-dependent resistor, and service life of the voltage-dependent resistor in the overvoltage protector is prolonged greatly.

The invention discloses an overcurrent protection circuit and an AI module provided with the same. The AI module comprises a power supply source for supplying power to onsite instruments, and multiple signal input channels, wherein each signal input channel is used for respectively transmitting signals acquired by each onsite instrument to a CPU module, a power supply loop for supplying power to each onsite instrument is provided with an overcurrent protection circuit, the input end of each overcurrent protection circuit is electrically connected with the power supply source, and the output end of each overcurrent protection circuit is used for electrical connection with each onsite instrument. By use of the overcurrent protection circuit provided by the invention, each signal input channel in the AI module can be effectively and safely protected, other channels are not affected if one signal input channel generates a fault, and after the fault is removed, the channel can be automatically recovered.

The invention discloses a power distribution network fault monitoring system and method based on multi-source measurement data, and the system carries out the layer and domain partitioning of the obtained multi-source measurement data through a multi-source data partitioning module, and obtains the partitioning data corresponding to different partitioning types. The multi-source data fusion moduleis used for carrying out fusion processing on the division data of different division types according to the division types to obtain fusion data of different fusion types; the fault identification module selects a corresponding fault identification unit to perform fault identification on the fusion data according to the fusion type to obtain a fault identification result; and the fault processing module is used for obtaining a fault identification result, processing the fault identification result according to a preset fault processing mode and sending processed information to the monitoringprotection platform, so that the measurement data is effectively utilized to monitor the fault of the power distribution network, the detection accuracy is improved, and the power distribution network is safely and effectively monitored and protected.

The invention discloses an elevator built-in safety gear which comprises a fixed plate, a case, a groove,fixed holes, a fixing bolt, a panel, a gearbox, an induction box, two idler wheels, a locking clamp, a sliding chute, a connecting strip and a speed sensing module, wherein the fixed plate is mounted above the case; the small groove is formed in the fixed plate; the fixed holes are formed in the two sides of the small groove; the gearbox is mounted below the fixed plate; the two idler wheels are mounted in the gearbox and are connected through the connecting strip; the panel is mounted on the outer surface of the gearbox; the panel and the gearbox are fixed through the fixing bolt; the sliding chute is formed in the panel; the connecting strip is embedded in the sliding chute; the induction box is mounted on the right side of the gearbox; the speed sensing module is mounted in the induction box; and the locking clamp is mounted between the gearbox and the induction box. The elevatorbuilt-in safety gear adopts the induction type and the idler wheel moving fast and slow type to safely and effectively protect an elevator, can judge whether the elevator is in an excellent operatingstate or not from multiple factors and locks the elevator timely in the case of harmful factors to reduce the accident risk.

The invention discloses a flame retardation polypropylene insulation cable material. The flame retardation polypropylene insulation cable material is mainly prepared from, by mass, 107-116 parts of polypropylene, 5-10 parts of white carbon black, 3-8 parts of sulfur, 4-9 parts of zinc borate, 6-10 parts of calcium stearate, 6-12 parts of carboxymethylcellulose sodium, 5-11 parts of epoxidized soybean oil, 17-23 parts of aluminum hydroxide, 10-16 parts of diatomite and 8-13 parts of lignin. The above obtained product has the advantages of good mechanical performances, impact resistance, corrosion resistance, stretching resistance, high flame retardation property, good insulation property, and realization of safe and effective protection of cables.

The invention discloses an overvoltage protector. The protector comprises a semiconductor switch circuit and a trigger circuit, wherein the first end of the semiconductor switch circuit is connected with the first end of a protected device, the second end of the semiconductor switch circuit is connected with the second end of the protected device, and the semiconductor switch circuit is used for controlling opening and closing of the overvoltage protector; and the trigger circuit is connected with a control end of the semiconductor switch circuit and used for triggering the semiconductor switch circuit. Through the overvoltage protector, the problem that effective protection cannot be provided for the protected device or circuit due to too high clamping voltage provided by the overvoltage protector in the prior art is solved, and effective and safe protection on the protected device is achieved.

The invention relates to a centrifuge tube of an improved structure. The centrifuge tube is used for a blood transfusion immunology detection instrument and belongs to the technical field of medical care equipment. The centrifuge tube has the technical scheme that the centrifuge tube of the improved structure comprises a tube body and a tube cover, wherein one end of the tube cover is connected with the top of one side of the tube body through a connecting section; a spiral drainage passage is annularly arranged on the inner wall of the tube body; the bottom of the tube body is a conical bottom; the bottom of the tube body is provided with a downwards projected circular ring structure; the lower end surface of the circular ring structure is a flat surface; a plurality of anti-slip convex ribs are uniformly distrusted at intervals in the length direction of the tube body on the outer surface of the tube body. The centrifuge tube has the advantages that the structure is reasonable; the use effect is good; the popularization and the use are facilitated.

The invention discloses an overvoltage protector. Wherein, the protector includes: a semiconductor switch circuit, the first end of which is connected to the first end of the protected device, and the second end is connected to the second end of the protected device for controlling the opening and closing of the overvoltage protector; the trigger circuit , which is connected to the control terminal of the semiconductor switch circuit and used to trigger the semiconductor switch circuit. The present invention solves the problem that the clamping voltage provided by the overvoltage protector in the prior art is too high to provide effective protection for the protected equipment or circuit, and realizes effective and safe protection for the protected equipment.