37results about How to "Improve the safety protection factor" patented technology

The invention discloses a device for monitoring working or fusing state of a fuse, and relates to field of power transmission and distribution of power systems. The device for monitoring the working state of the fuse is connected in parallel near the fuse on a power transmission line. One end of the monitoring device is connected with a line load end, and the other end of the monitoring device is connected with a line power end. When the monitoring device monitors the information that the fuse in a three-phase power supply fuses and ages to be broken (no contact) or breaks down, comparison is carried out with the voltage in a monitoring module and after making judgment, the monitoring device sends a fault signal to give an alarm. At the same time, an indication output end sends the signal to electric equipment to cut off the power supply of the electric equipment so as to protect the electric equipment. The monitoring device improves the safety protection factor of a circuit and provides great convenience for the power transmission and distribution management of the power system.

The invention discloses a roadway support method for preventing rock burst. The roadway support method includes the following steps that a, according to mine vibration signals measured under a coal mine and located at different energy levels, the vibration frequency range under the coal mine is obtained; b, metamaterial energy-absorbing slabs are manufactured, and the wave-absorbing frequency band of the slabs is within the mine vibration frequency range; c, a roadway is excavated according to the shape of a roadway section, anchor rod drilling holes are drilled in a hanging arch range, and the metamaterial energy-absorbing slabs are anchored to a roof and a lane side of the roadway through anchor rods. By means of the wave-absorbing performance of a metamaterial, shock waves of rock burst can be absorbed actively, and the intensity of rock burst is relieved, so that the support effect is enhanced, and the safety protection coefficient of workers under the mine is increased.

The invention discloses a protective device for fitness equipment. The device structurally comprises armrests, a dial plate, a protective mechanism, a crash pad, a hydraulic shaft, a roller, running boards, a running belt adjusting shaft and a running belt; the running boards are installed at the two sides of the running belt, when the acceleration phenomenon happens, after a starting structure isstarted, a pushing structure is promoted to begin to be operated, an inflation structure constantly reciprocates to instantly inflates an air bag, while inflation is performed, on one hand, the air bag is expanded after being inflated, a sliding structure slides to the two sides, a pressing angle structure is promoted to be operated, and the air bag is not pressed by a foot pressing plate and ispopped out; on the other hand, the pushing structure and the pressing angle structure are matched, the transfer speed of the foot pressing plate is higher, the air bag is popped out rapidly, after thehuman body loses the balance, the user leans forwards and kneels on the air bag, no injury is caused to the knee joints of the human body, and the safety protection coefficient and practicability ofa running machine are improved.

The invention relates to an enhanced water-cooled cable sleeve rubber material and a manufacturing technology thereof. The material consists of 18wt% of natural rubber, 12wt% of butylbenzene rubber, 7.95wt% of butadiene rubber, 8.5wt% of chloroprene rubber, 10wt% of peel reclaim, 9.5wt% of high abrasion carbon black, 15wt% of kaolin, 9.5wt% of light calcium carbonate, 2wt% of zinc oxide, 0.6wt% of stearic acid, 0.1wt% of paraffin, 0.4wt% of accelerant M, 0.25wt% of accelerant TMTD, 0.4wt% of accelerant DM, 1wt% of anti-aging agent, 0.8wt% of sulfur, 3wt% of pine tar oil and 1wt% of engine oil; through the manufacturing technology of plastication, one-section mixing, two-section mixing and three-section mixing, the water-cooled cable sleeve rubber material with comprehensive performances of high pressure resistance, high temperature resistance, abrasion resistance, shock resistance, thermal radiation resistance, aging resistance and the like is obtained; a water-cooled cable protective sleeve manufactured from the material can improve the safety protection coefficient of industrial electric heating equipment heavy current busbars, and the service life of the water-cooled cable protective sleeve is also prolonged exponentially.

The invention discloses a campus floor intelligent protection system based on big data. The campus floor intelligent protection system comprises comprehensive feature identification equipment, physical action extraction equipment, fence stress detection equipment, danger mode analysis equipment, human body state detection equipment, a data processing center, a protection supporting mechanism and aprotective air cushion executing mechanism; the protection supporting mechanism comprises a middle protection device, a protective net and two side protection devices; the middle protection device comprises an extending frame, a U-shaped sliding plate, an electric telescopic rod and a positioning frame; and the side protection devices comprise positioning plates, sliding strips and transmission parts. According to the campus floor intelligent protection system based on the big data, by detecting behavior actions and facial expression of students at a fence and the thrust and pressure borne bythe fence, whether the behavior actions of the students are dangerous or not is judged, whether the students fall or not and falling positions are detected through the human body state detection equipment, the protection supporting mechanism or the protective air cushion executing mechanism is controlled to conduct protection, thus the safety of the falling students is ensured, and casualties arereduced.

The invention relates to an aluminum profile end face milling machine which is used for machining of aluminum profiles or PVC or light alloy, and belongs to the field of machining. The aluminum profile end face milling machine comprises a milling machine box, a positioning clamping device, a tool device, a protecting cover and a safety hood, cross beams are arranged on the front side and the right side inside the milling machine box respectively, the positioning clamping device is installed on the cross beams through screws, a control switch is arranged on the front face of the milling machine box, two rows of parallel sliding blocks are arranged on the tool device, a guide rail is arranged at the bottom of the positioning clamping device, the sliding blocks are matched with the guide rail, the tool device moves back and forth through the sliding blocks, the protecting cover is located above the tool device, the safety hood is installed on the milling machine box, and the safety hood and the milling machine box together form a closed whole. The aluminum profile end face milling machine has the advantages of being high in machining precision, high in tool changing speed, convenient to operate, accurate in positioning and high in safety protection coefficient.

The invention related to a method for controlling an automatic hydroform unit, in particular to a method for automatically controlling the automatic hydroform unit of a fly ash brick. The invention consists of a material automatic adjustment, compacting protection in the compacting process, automatic cleaning of a brick-clamping device, a single layer of billet placement, a double layer of stacking way and an automatic controlling of a feeding machine. The invention is characterized in that the automatic operation process of the automatic hydroform unit is combined together, under the automatic controlling situation of all the above processes, to realize the automatic operation mode of the automatic hydroform unit. The invention also realizes operating when having material and operation-stopping and stand-by when having no material-supplying, an automatic hanging and feeding streaming vehicle are completely interlocked with the whole production line, thus realizing an automatic controlling method of continuous production by the automatic hydroform unit. The producing automation is increased to ensure the contracting process of the product with a high quality and a high yield.

The invention discloses a strong rock burst roadway supporting method. According to the bolt-mesh-anchor type support coupling supporting structure, a three-level combination supporting manner including anchor net, a U-shaped shed and energy absorption and impact prevention supports is adopted. The method comprises the following steps of first, after rock burst mine roadway tunneling is carried out for 100 centimeters, metal net is laid on the roof and the sides of a roadway, and energy absorption and impact prevention anchor rods are installed and fixed; second, anchor rod installation holesare perforated in the roof of the roadway, and the anchor rods are installed in the anchor rod installation holes; third, the U-shaped shed is placed, and the lap joint position of the U-shaped shed is locked; fourth, along with mine roadway tunneling, the first step, the second step and the third step are completed in a cycle manner; and when roadway tunneling is carried out for 600 centimeters to 800 centimeters, the energy absorption and impact prevention supports start to be installed, and along with mine roadway tunneling, the first step, the second step, the third step and the fourth step are completed in a cycle manner. The impact prevention supports are adopted for reinforcement and supporting according to the geological conditions of a roadway while tunneling is carried out, and stability and safety of the roadway are guaranteed. The strong rock burst roadway supporting method has the important practical significance and the significant social benefit in the aspects of high-efficiency mining with coal mine security guaranteed, production cost reduction, economical benefit improvement, social stability maintenance and the like, and has the broad application prospect.

The invention discloses an ATM safety protection cabin. When self-service equipment or the protection cabin is broken by people, the condition can be detected in the first time and handled so that the public security organization can be assisted in detecting card stealing and robbing and other cases done by criminals at large, the society security is maintained, and idlers are prevented from occupying bank resources and affecting using of other users. The ATM safety protection cabin comprises a single-man cabin body which is made of bulletproof or explosion-proof glass, an ATM is mounted in the cabin body, an electronic access control system is arranged on the cabin body, a ventilation device, an intelligent voice device, an automatic lighting device, a monitoring device, a remote control device and a remote stopping and frightening device are further arranged in the cabin body, and the monitoring device, the remote control device and the remote stopping and frightening device communicate with a control center.

The invention relates to an intelligent skirt, comprising a skirt body, a cold light source, a single-chip microcomputer minimum system, a display driver circuit, an emotion and mentality parameter detection module and a power module, wherein the cold light source is arranged at the inner side of the skirt body; the single-chip microcomputer minimum system is connected with the cold light source through the display driver circuit, an output port of the emotion and mentality parameter detection module is connected with an input port of the single-chip microcomputer minimum system, the single-chip microcomputer minimum system controls the display color of the cold light source according to the detection result of the emotion and mentality parameter detection module, and the power module can supply power to all modules. The intelligent skirt provided by the invention can replace the original warning clothing, replace the warning clothing enhancing the visibility by the reflected light, in addition, a gleamy pattern can be arranged according to the preference of a user, the color of the pattern can be changed according to the mood of the user, and fashion and personality can be shown.

The present invention discloses a building door control system. The system comprises an IC card identification device, a biological identification device, a main control device, a detection device andan alarm device; the IC card identification device is used for identifying IC card information of a user and sending the IC card information to the main control device; the biological identificationdevice is used for identifying biological feature information of the user and sending the biological feature information to the main control device; the main control device is used for matching the ICcard information and / or the biological feature information with pre-stored user information, controlling a gate to be opened when matching succeeds and controlling the alarm device to work when matching fails; the detection device is used for acquiring moving information of the user in the gate within the preset time and sending the moving information to the main control device; and the main control device is also used for carrying out counting according to the moving information and controlling the alarm device to work when a counting result exceeds a preset threshold value. The safety protection coefficient of the door control system can be further improved.

The invention provides a hand cutting prevention security device of a full-open hydraulic paper cutter. The device comprises the full-open hydraulic paper cutter and a working platform, and is characterized in that grating signal transmission devices of LDKS-II type photoelectric protectors are correspondingly arranged at the two sides of the full-open hydraulic paper cutter above the working platform. As the emitting distances of the grating signal transmission devices are far (reaching decade meters) and the reflecting areas thereof are large, the device adopts the grating signal transmission devices to wholly form an infrared light curtain wall, the existence of shielding objects can be accurately judged, the fault phenomenon of wrong actions or no operation caused by weak signals is radically not generated, the stop time is shortened, the machine working efficiency is improved, the most important is that the safety protection coefficient is greatly improved, the application time is long, no fault exists, the cost is lower, and the device is suitable for the security requirements.

The invention discloses a campus floor intelligent protection system based on big data, including comprehensive feature recognition equipment, body movement extraction equipment, guardrail force detection equipment, dangerous mode analysis equipment, human body state detection equipment, data processing center, protection support mechanism and Protective air cushion actuator, protective supporting mechanism includes central protective device, protective net and protective devices on both sides, middle protective device includes stretch frame, U-shaped slide plate, electric telescopic rod and positioning frame, side protective device includes positioning plate, sliding bar and transmission part. The campus floor intelligent protection system based on big data provided by the present invention detects the behaviors and facial expressions of the students at the guardrails, as well as the thrust and pressure on the guardrails, and judges whether the behaviors of the students are dangerous, and through the human body state detection equipment Detect whether there is a student falling and the location of the fall, and control the protective support mechanism or the protective air cushion actuator to protect the safety of the falling students and reduce casualties.

The invention relates to the technical field of communication towers, in particular to a communication tower with an anti-falling device, which comprises a communication tower body and a controller arranged on the communication tower body, and further comprises a winding module arranged on the communication tower body, and a safety rope is wound in the winding module. The winding module can control the winding work of the safety rope; the anti-falling hook is detachably mounted on the communication tower body and connected with the safety rope; the memory modules are uniformly arranged on the communication tower body and used for monitoring the position of a maintainer, and the memory modules are electrically connected with the winding module; on the premise that the safety protection effect is guaranteed, electric energy is saved, continuous work of the stepping motor is avoided, compared with a traditional communication tower, the safety protection coefficient of the device is high, and the life safety of a maintainer during high-altitude operation can be effectively guaranteed.

The invention discloses a sewage treatment system based on frequency converters. The sewage treatment system comprises a sewage processing system, a sewage treatment electrical control module, and a sludge treatment electrical control module; the sewage processing system comprises a mechanical treatment module and a biochemical treatment module; the mechanical treatment module comprises a sewage collecting basin, a filtering grating, a sedimentation inclined plate, and a sludge tank; the sewage treatment electrical control module comprises a sedimentation basin, a water level detection controller, S7-300, CVF-P2-4T0220, a power frequency / frequency conversion switching control circuit, and a frequency conversion / power frequency switching circuit; the sludge treatment electrical control module comprises S7-300-1, a water level detection controller 1, a sludge basin, and CVF-P2-4T0300; an upper limit water level sensor 1 and an upper limit warming water level detector 1 are arranged in the sludge basin. The beneficial effects are that the sewage treatment system is high in integrity, excellent in purifying treatment effect, and safety protection performance.

The invention discloses a full prism reflective material and the processing technology thereof and relates to the technical field of a reflective material. The full prism reflective material includesa substrate, a composite adhesive layer, a plating layer, a focusing layer, a full prism layer, a surface layer and a film protective layer, wherein the composite adhesive layer, the plating layer, the focusing layer and a surface layer material are processed, and full prism coating and making, plating, adhesive coating and composition processes are performed to obtain the finished full prism reflective material. The full prism reflective material is advantaged in that the processing technology is simple without a baking channel, the full prism reflective material can be continuously produced,the fluorescence technology is combined with the full prism reverse reflective technology, road safety protection factors can be effectively improved, reuse can be realized, the entire working environment is cleaner, no exhaust is emitted, and environmental health is realized.

The invention discloses a sewage treatment method based on a frequency converter, comprising a sewage treatment system, an electric control module for sewage treatment and an electric control module for sludge treatment; the sewage treatment system includes a mechanical treatment module and a biochemical treatment module, and the mechanical treatment The module includes a sewage collection tank, a filter grill, a sedimentation slant plate and a sludge tank, and the electrical control module for sewage treatment includes a sedimentation tank, a water level detection controller, S7‑300, CVF‑P2‑4T0220, industrial / frequency conversion switching control circuit And frequency conversion / power frequency switching circuit, the sludge treatment electrical control module includes S7-300-1, water level detection controller 1, sludge tank and CVF-P2-4T0300, and an upper limit water level sensor 1 is arranged in the sludge tank And the upper limit alarm water level detector 1, the invention has the beneficial effects of high system integrity, good purification treatment effect and high safety protection performance.

The invention creates a vehicle hydraulic buffering safety protector, and belongs to the technical field of mechanical processing manufacture. The vehicle hydraulic buffering safety protector solves the technical problems: the protector can buffer and weaken destructive power produced by the collision of motor vehicle in driving. If a front bumper and a rear bumper of the collided motor vehicle are provided with the vehicle hydraulic buffering safety protector, two vehicles collide, the vehicle hydraulic buffering safety protectors arranged in two vehicles contact and collide first; after the collision, a spring assembled in the vehicle hydraulic buffering safety protector contracts under the action of external force and transfers force to an assembled piston, the piston is pushed to produce displacement, the displacement of the piston pushes liquid in a conduit to flow to other vehicle hydraulic buffering safety protector; therefore, the protective function of linkage buffering is produced. The vehicle hydraulic buffering safety protector prevents serious consequence of accidents of vehicle damage and life loss caused by vehicle crash.

The invention discloses a front and rear-interlocking switch cabinet, which comprises front door interlocking, a front lower door, a control unit room, a bus room, rear door interlocking, a rear upperdoor, a grounding switch operation shaft, a cable room, a switch cabinet body and rollers, wherein one side of the upper end of the switch cabinet body is provided with the control unit room; the other side of the upper end of the switch cabinet body is provided with the bus room; one side of the upper end of the switch cabinet body is provided with the rear upper door; the rear upper door is hinged with the switch cabinet body through rear door interlocking; the inner lower end of the switch cabinet body is fixed with the grounding switch operation shaft; one side of the lower end of the switch cabinet body is provided with the cable room; the other side of the lower end of the switch cabinet body is provided with the front lower door; the front lower door is fixedly connected with the switch cabinet body through front door interlocking; and four rollers are arranged around the lower end of the switch cabinet body. The front and rear-interlocking switch cabinet has the beneficial effects that the cable room can be ensured not to be entered in the case when the cable side is charged, moving and use are convenient, and mounting of the grounding wire is convenient.

The invention relates to a fuel gas ball valve. The fuel gas ball valve comprises a valve body, a gland, a valve deck, a valve ball and a valve rod, wherein a connecting plate is arranged on the valvebody, the gland is matched with the valve body, and a valve body runner is formed by combining the valve body and the gland; a pressing plate is arranged on the gland, the gland is connected with thevalve body through a countersunk screw, a first counter bore is formed in the pressing plate, the countersunk screw is contained in the first counter bore, the valve deck is arranged above the valvebody and connected with the valve body through a countersunk screw, a second counter bore is formed in the valve deck and runs through the valve deck, and the countersunk screw is contained in the second counter bore; the valve ball is rotationally arranged inside the valve body runner; the valve rod penetrates through the valve deck to be rotationally arranged inside the valve body and is connected with the valve ball, and the valve ball synchronously rotates along with the valve rod. Due to the fact that the valve body and the gland are connected through the countersunk screw, the valve bodyand the valve deck are connected through the countersunk screw, and sealing is performed through paraffin, safety protection is achieved, and the service life of the valve is prolonged.

The invention discloses a high-efficiency composite converter lower suspension connection system. The high-efficiency composite converter lower suspension connection system comprises coupling wheels,balance seats, a supporting column, a workbench, a working chamber, a limiting block, a guide rail, a middle shaft sliding rail, a trolley, a gyroscope, sliding blocks, a stretcher, a transmission, areduction wheel, a hanging arm, a connecting wheel and a converter, wherein the reduction wheel is fixedly connected with the connecting wheel through the hanging arm; the lower end of the connectingwheel is fixedly connected with the converter; the guide rail is slidably connected with the stretcher; the sliding blocks are embedded in the two ends of the stretcher; and the right side of the stretcher is fixedly connected with the transmission. According to the high-efficiency composite type converter lower suspension connection system, the structure bearing is improved accurately through a reasonable structure, the stability and reliability of operation of lower suspension connection are further enhanced, it can be ensured that the converter is controlled reliably by high-efficiency composite shaft symmetric structures distributed on the two sides of the workbench, the lower suspension connection system can be powered off in time when accidents occur, and a certain protection effectcan further be achieved.

The invention discloses an aluminum alloy formwork and outer wall K plate strengthening device. The device comprises a first K plate and a second K plate. A main formwork comprises the first K plate, the second K plate and an aluminum alloy plate. The first K plate is fixedly connected with one side of the aluminum alloy plate, and the other side of the aluminum alloy plate is fixedly connected with the second K plate. The first K plate is fixedly connected with the second K plate through transverse back ribs. A first vertical back rib is fixed to the outer side of the upper end of the first K plate. A second vertical back rib is fixed to the outer side of the second K plate. Angle iron is arranged on the two sides of the transverse back ribs, and the transverse back ribs are provided with nuts for fastening the angle iron. A second transverse baffle is arranged on the other side of the aluminum alloy plate. The upper end of the first K plate, the upper end of the second K plate, the first vertical back rib and the second vertical back rib are fixed through fastening bolts. The aluminum alloy formwork and outer wall K plate strengthening device has the beneficial effects that the strengthening stability is good, the safety protection coefficient is high, strengthening is convenient and fast, time and labor are not wasted, and the wall perpendicularity is high.

The present invention relates to a cloud-computing network real-time monitoring method. According to the monitoring method, based on the cloud computing technology, a server and resources are effectively integrated, and a CPU, a memory and a magnetic disk are virtualized; based the cloud computing, load is shared equally, and pressure is dispersed; and the PUSH technology of the NetworkBOX is adopted, so that network real-time monitoring can be achieved effectively, and the virus feature codes and patches of a client can be updated in real time within 45 seconds. The method of the invention is simple in structure, can prevent network attacks, improve a safety protection coefficient, perform automatic updating, reduce operating cost, reduce the probability of being attacked of a user in an empty stomach period, and cover various kinds of security protection applications on the Internet at present. With the method adopted, it can be ensured the user is in a safest state, and the user will not increase cost for function upgrade in a future use process.

The invention discloses an armored mid-set metal-sealed switch cabinet with constant temperature control, which comprises a bus room, a loading and unloading-type baffle, a valve baffle, a condensation pipe, a constant temperature controller and a power on and power off controller, wherein the switch cabinet body comprises the bus room, a circuit breaker handcart room, a wire room and a relay instrument room; one side of the upper end of the wire room is fixedly connected with the bus room; the upper end of the circuit breaker handcart room is fixedly connected with the lower end of the relayinstrument room; the loading and unloading-type baffle and the valve baffle are arranged between the circuit breaker handcart room and the bus room; a horizontal baffle is arranged between the wire room and the circuit breaker handcart room; the wire room is internally provided with a grounding switch, a wire, an arrester, a grounding bus, a grounding switch operating mechanism, a control wire groove and the condensation pipe; and the other end inside the wire room is fixed with the constant temperature controller and the power on and power off controller. The armored mid-set metal-sealed switch cabinet with constant temperature control has the beneficial effects of high safety protection coefficient, little line wiring, convenient maintenance and good constant temperature control effects.

The invention discloses an automobile Bluetooth fingerprint lock, which comprises a shell assembly, a fingerprint patch assembly, a PCB (printed circuit board) assembly, a motor assembly, and a gear assembly, the shell assembly comprises an upper shell and a lower shell, the upper shell and the lower shell are connected together through screws, the bottom of the lower shell is provided with a square through hole, the center position of the outer surface of the upper shell is provided with a recess which matches with the fingerprint patch assembly, the fingerprint patch assembly is arranged inthe recess, the upper end of the PCB assembly is arranged on the inner surface of the front shell through screws, the lower end of the PCB assembly passes through the square through hole of the lowershell and is connected to an automobile power supply, the upper end of the motor assembly is fixedly arranged at the position of the right end of the outer surface of the lower shell and connected tothe PCB assembly through wires, the left end of the motor assembly is connected to the gear assembly, and the gear assembly is fixedly connected to the motor assembly. The safety protection coefficient of storage boxes is increased, which helps protect personal articles and prevent privacy of an automobile owner from leaking.

The invention provides a fuse wire and a fuse tube for a fuse. The fuse wire comprises a copper-plated stainless steel rod (11), a first melt (12), a second melt (13), a stainless steel wire (14) and a zinc-plated copper stranded wire (15) which are connected through a connecting component (16). The fuse tube comprises an inner-layer arc extinction tube (21) and an outer-layer arc extinction tube (22), wherein the first melt (12), the second melt (13) and the stainless steel wire (14) are nested in the inner-layer arc extinction tube (21); the inner-layer arc extinction tube (21) is nested in the outer-layer arc extinction tube (22). According to the fuse wire and the fuse tube, adopting the structure, for the fuse, the safety protection coefficient of circuit equipment is increased.

The invention provides a fuse wire and a fuse tube for a fuse. The fuse wire comprises a copper-plated stainless steel rod (11), a first melt (12), a second melt (13), a stainless steel wire (14) and a zinc-plated copper stranded wire (15) which are connected through a connecting component (16). The fuse tube comprises an inner-layer arc extinction tube (21) and an outer-layer arc extinction tube (22), wherein the first melt (12), the second melt (13) and the stainless steel wire (14) are nested in the inner-layer arc extinction tube (21); the inner-layer arc extinction tube (21) is nested in the outer-layer arc extinction tube (22). According to the fuse wire and the fuse tube, adopting the structure, for the fuse, the safety protection coefficient of circuit equipment is increased.

The invention discloses a car head buffer device of a driverless car. The car head buffer device comprises a car head upper edge frame body and a car head lower edge frame body; bearing bars are arranged at the bottom of the car head upper edge frame body and the top of the car head lower edge frame body correspondingly; vertical columns are vertically mounted at the bottom of the bearing bar on the car head upper edge frame body at equal distances; buffer pieces are arranged on the sides, close to a car head front sealing plate, of the vertical columns at equal distances from top to bottom; and bearing plates are fixed to the ends, away from the vertical columns, of the buffer pieces. The vertical columns are arranged at the bottoms of the bearing bars on the car head upper edge frame body and the car head lower edge frame body, the buffer pieces are arranged on the vertical columns, the bearing plates are mounted at one ends of the buffer pieces, second buffer springs are arranged between the bearing plates and the car head front sealing plate, thus when a car head of the driverless car is collided, impact force is buffered well, and the effects that the impact resistance capacity is high, and the good safety protection function on parts in the car head and passengers in the car is achieved are achieved.