540results about How to "With dustproof" patented technology

The invention relates to a projection system with a forward projection optical screen. The projection system is composed of a forward projection screen (1) and a projection machine (2), the forward projection screen (1) comprises a substrate layer (4), a microprism array structure layer (5), a metal medium mirror surface reflective film (8) and a light diffuse reflection layer (9), the microprism array structure layer (5) is arranged on the side, facing the projection machine (2), of the substrate layer (4), and the microprism array structure layer (5) is composed of a bottom face (6), a projection machine incident ray shadow area (7) and an environment ray absorption layer (10). The projection system has the advantages that under the bright environment, the high gain and high contrast ratio are achieved, meanwhile, no surface glare exists, and the high-color reduction is achieved; a protection layer can be selectively attached to the outer side of the microprism array structure layer, and the protection layer has the advantages of being resistant to scratch, dust and aging.

The invention discloses a detection robot for underground rescue of a pressurized type coal mine, belonging to the technical field of robots. The detection robot comprises an explosion-proof box body, symmetrical travelling mechanisms, two driving mechanisms, an industrial control computer, a lifting mechanism and an optical fiber winding mechanism, wherein the symmetrical travelling mechanisms are arranged on two sides of the explosion-roof box body; the two driving mechanisms and the industrial control computer are arranged in the explosion-roof box body and are respectively independent; the lifting mechanism is provided with various probes; the mechanisms form a modular structure; the two driving mechanisms are symmetrically arranged and respectively comprise a first driving motor, a second driving motor, batteries connected with the motors, a first spur gear, a second spur gear, a driven spur gear, a first planetary reducer and a connecting shaft; the first spur gear and the second spur gear are respectively sleeved on output shafts of the first drive motor and the second drive motor; the driven spur gear which is in simultaneous meshed drive with the first spur gear and the second spur gear is sleeved on an input shaft of the first planetary reducer; an output shaft of the first planetary reducer is connected with a connecting shaft extending out of the box body; and the connecting shaft end is connected with a driving wheel. According to the invention, one output shaft is driven by adopting two motors simultaneously, thus the power of the robot can be improved.

The invention belongs to the field of construction materials, in particular to an aqueous infiltrating crystallization type waterproof agent and a preparation method thereof. The aqueous infiltrating crystallization type waterproof agent comprises tartaric acid, sodium fluoride, silica sol, silane emulsion and water. The aqueous infiltrating crystallization type waterproof agent is aqueous waterproof admixture comprising a plurality of active chemical components and has high infiltrating ability and lower surface tension. After the aqueous infiltrating crystallization type waterproof agent is applied to the basal plane of concrete, an active compound is infiltrated and diffused in the concrete and reacts with a hydrated product in the concrete in a pore to generate a needle or fiber-shaped crystal so as to block the pore, thereby compacting the concrete and playing the roles of preventing water, ventilating, increasing the compression resistant strength, and the like.

The invention relates to cold accumulation transportation technique field, specially relating to a using method of a set of cold accumulation thermal insulation device. The method comprising following steps: A, preparing for boxing; B, boxing freight, C, measuring temperature and sealing the box; D, opening the box and measuring temperature after the freight reaches the destination; E, cleaning the device. The inventive method is provided with low resource consumption, a low transportation cost, accords with environmental protection requirements, and multi-temperature-segment service is provided. Special requirements for different temperatures and different service quality are satisfied in cold-chain logistic markets, and refrigerated transport service of a small batch and poly batches is provided.

The invention discloses an intelligent operating system and method for a train examination robot of a railway vehicle, and belongs to the field of technical inspection of railway freight trains. The intelligent operating system for the train examination robot of the railway vehicle comprises a train examination robot system, a train examination operation, monitoring and management platform and a train examination wireless network platform; a wheel type robot and an air-control big gate are controlled to combine with an automatic control technology, a laser detection technology, an inactive radio frequency transmission technology, a position self-sensing technology, a machine visual technology and a digital image analysis technology to acquire holographic data of a to-be-detected vehicle; a mode identification technology is utilized to perform treatment and analysis as well as decision-making, so that brake test automation, part quality state diagnosis informatization, fault treatment monitoring and reexamination traceability after train maintenance in train examination operation of the railway vehicle are realized. The intelligent operating system realizes replacing manual examination by robot examination, can be suitable for different environments of train examination application places across the country, can comprehensively improve quality and efficiency of train examination operation, and has relatively great social benefits and economic benefits.

The invention relates to a water utilization monitoring and management system for hydrants in a city. The system comprises a unified information management platform, information collection terminals mounted on the hydrants respectively, and monitoring terminals arranged in water companies and police and firefighting departments; each information collection terminal collects the hydraulic pressure value, the water utilization state and the geographical coordinate of the corresponding hydrant, and sends information to the information management platform via wireless network; the information management platform monitors and stores the water utilization states and the hydraulic pressure values of the hydrants as well as the working states of the information collection terminals, and displays related information in an electronic map; and the monitoring terminal makes data interaction with the information management platform via wireless and wired network, and checks the related information of the hydrants in real time. The hydrants are improved under the condition that original hydrants are not changed destructively and parts are not changed, the hydrant water utilization monitoring platform which covers the whole city is established, and information including water utilization information, state, flow and position of the hydrants is monitored comprehensively.

The invention relates to a granary capacity real-time monitoring system, and belongs to field of grain storage amount monitoring. According to the technical scheme, the granary capacity real-time monitoring system comprises a sensing sub-system, a measuring sub-system, a controlling sub-system and a computing sub-system. The sensing sub-system comprises a pressure sensor, a signal transmission line, a digital voltmeter and a power supplying unit. The measuring sub-system comprises a measuring device, a signal transmission line and a power supplying unit. The controlling sub-system comprises a controlling unit, a switchboard, a communication module and a power supplying unit. The computing sub-system comprises a data receiving unit, a data processing unit and a data displaying unit. The sensing sub-system senses change of grain stack states in real time, the measuring sub-system collects grain face information in a granary, the controlling sub-system controls the sensing sub-system and the measuring sub-system and conducts storage and management on the data collected by the sensing sub-system and the measuring sub-system, and the computing sub-system conducts processing on the storage data of the controlling sub-system and then obtains real-time granary capacity. The granary capacity real-time monitoring system has the advantages of being capable of conducting remote intelligent control, high in measuring precision, high in reliability, good in stability and durability, resistant to dust and corrosion and the like. Furthermore, the granary capacity real-time monitoring system is convenient to popularize and apply.

The invention relates to a resin composition and a method for preparing an FPC coverlay by using the same. The resin composition comprises the following components in part by weight: 50 to 70 parts of flexible saturated polyester, 30 to 50 parts of hard saturated polyester, 1 to 20 parts of enclosed isocyanate curing agent, 15 to 150 parts of pigment, 15 to 120 parts of inorganic filler, 0.5 to 2.5 parts of antifoaming agent, and 5 to 30 parts of organic solvent. The resin composition is applied to the FPC coverlay in a flexible printed circuit. The resin composition has the characteristics of excellent weather resistance, high covering power, high flexibility and adhesiveness, and the like. The method for preparing the FPC coverlay by using the same can realize the one-off coating of the FPC coverlay on the flexible printed circuit, has the advantages of simple manufacturing method, low cost and high yield, and can realize the continuous production and obviously improve the production efficiency. The FPC coverlay produced by the method can improve the contrast ratio of an LED rope light under the action of an insulating base film besides excellent dust prevention, corrosion resistance, weather resistance and other characteristics.

The invention discloses a rare earth modified photocatalyst and a degradable plastic film prepared by the rare earth modified photocatalyst and a preparation method thereof. The rare earth modified photocatalyst of the invention consists of lanthanon and titanium dioxide, and weight of the lanthanon is 0.1 to 10 percent of that of titanium elements. The rare earth modified photocatalyst is blended with polyolefin resin, then the degradable plastic film can be prepared, and the weight of the rare earth modified photocatalyst is 0.1 to 20 percent of that of the polyolefin resin. The visible light utilization ratio of the rare earth modified photocatalyst is improved by 50 percent, bactericidal rate reaches 70 percent, contact angle is less than 10 degrees, the effect of the degradable plastic film is significant, and degrade ratio can reach 20 to 60 percent. The raw materials of the rare earth modified photocatalyst are inexpensive and innoxious, the preparation method is simple, and the rare earth modified photocatalyst has the advantages of light conversion, visible light sensitization, hydrophilic and antifogging, dust proofing, etc.

The invention provides an environment-friendly PVC (Polyvinyl Chloride) foaming ceiling panel and a preparation method thereof. The environment-friendly PVC foaming ceiling panel comprises the following components in parts by weight: 90-110 parts of PVC resin, 5-10 parts of polylactic acid, 7-12 parts of polycaprolactone, 10-20 parts of polyester fiber, 50-70 parts of barium sulfate, 3-7 parts of plasticizer, 5-11 parts of stabilizer, 1.7-5 parts of titanium dioxide, 0.6-2 parts of PE (Poly Ethylene) wax, 2-5.5 of processing modifier, 1.4-3.2 parts of anti-impact modifier, 0.7-1.5 parts of composite foaming agent and 20-30 parts of sepiolite. The environment-friendly PVC foaming ceiling panel provided by the invention has the characteristics of environmental friendliness, good weather fastness, high fire resistance, strong scratch resistance, sound insulation, thermal insulation, dust prevention, noise absorption, insect prevention and light reflection and is very suitable for serving as an indoor ceiling.

The invention discloses a charging pile image acquisition system and a method of recognizing vehicle identity information by image acquisition; the charging pile image acquisition system comprises a charging pile and a vehicle identity auto-recognition system embedded in the charging pile; the vehicle identity auto-recognition system is connected to an information interface of the charging pile through a vehicle identity auto-recognition system communication interface; the vehicle identity auto-recognition system comprises an auto-recognition module and a camera, the signal output end of the camera is connected with the auto-recognition module, and the input end of a charging control module in the charging pile is connected to a cloud server. Recognizing is achieved herein by combining vehicle identity auto-recognition technology and the charging pile, the camera is mounted on a body of the charging pile at specific height, and the auto-recognition system is added in the body. The camera side of the charging pile faces a parking space during mounting of the charging pile. The camera used herein is small in size and is friendly to the integral structure of the charging pile; the charging pile image acquisition system has the advantages of good waterproofing property, lightning protection, good dustproof property, good antistatic property and the like.

The invention discloses a high-power LED bulb with electric shock preventing performance, high safety and long service life. The high-power LED bulb comprises a bulb cap (1), an insulating casing (2), an insulating light-transmitting front bulb shade (3), a light source plate (4) integrated with an LED chip, a radiator (5), a power supply drive component (6) and a thermo-sensitive switch (8), wherein the thermo-sensitive switch (8) is used for cutting off a power supply when the bulb is under high temperature; the front end of the insulating casing (2) is fixedly connected with the insulating light-transmitting front bulb shade (3), so as to form an accommodating cavity; all the light source plate (4), the radiator (5), the power supply drive component (6) and the thermo-sensitive switch (8) are arranged in the accommodating cavity; the radiator (5) comprises a baseplate (50); the bottom surface of the baseplate (50) is a plane surface part tightly clung to the light source plate (4); a heat radiation pillar (51) is arranged on the top surface of the baseplate (50); a lug boss (52) or sunken part which is used for enlarging the radiation area is arranged on the top surface of the baseplate (50); and a plurality of heat radiation grooves (21) communicated with the inner cavity of the insulating casing (2) are formed on the side wall of the insulating casing (2). The high-power LED bulb can be extensively applied to the field of LED illumination.

The invention discloses a pair of positioning shoes. The positioning shoes comprise shoe bodies, wherein each shoe body comprises a shoe sole and an upper, an adhesive shoe velcro is arranged on the upper; a first cavity and a second cavity are formed in the shoe sole, and communicated with each other through a through hole; an interlayer is arranged on the adhesive shoe velcro; each positioning shoe body also comprises an integrated circuit chip main board, integrated circuit chip peripheral equipment and a storage battery; each integrated circuit chip main board is arranged inside the correspondent first cavity; the integrated circuit chip peripheral equipment is arranged in the interlayer; each storage battery is arranged in the correspondent second cavity; each integrated circuit chip main board is connected with the correspondent storage battery; the integrated circuit chip peripheral equipment is connected with the integrated circuit chip main board. The positioning shoes are high in positioning accuracy and god in signal stability; the missing probability of children and old people with dementia can be reduced.

The invention discloses a magnetic coding lock cylinder and magnetic coding padlock capable of bearing severe environment, aiming at providing a magnetic coding lock cylinder and magnetic coding padlock which have good weathering resistance and high controllability and can bear severe environment. The magnetic coding lock cylinder of the invention comprises a lock cylinder shell (1), an upper cover (2), a bottom cover (3), a latching column (4), a sealing shrapnel (5), a plurality of latching blocks (6) and a plurality of permeable monopoles; wherein the permeable monopoles are arranged in thegap between the latching column (4) and the latching blocks (6), an unlocking position is arranged in the gap while the rest is locked position; the latching column (4) and the latching block (6) rotate relatively when the permeable monopoles is in the unlocking position; and the permeable monopoles (7) block the relative rotating of the latching column (4) and the latching block (6) when the permeable monopoles (7) is in the locked position. The invention is widely applied to the magnetic coding lockset field.

The invention relates to the technical field of assembly, and discloses a slidable assembly type wall. The slidable assembly type wall comprises a wallboard, an upper fixing plate is clamped to the upper surface of the wallboard, a lower fixing plate is clamped to the lower surface of the wallboard, a sliding groove is formed in the inner bottom wall of the lower fixing plate, a fixing base is fixedly connected to the lower surface of the wallboard, and the inner side wall of the fixing base is slidably connected with a sliding plate through a sliding groove. According to the slidable assemblytype wall, through the arrangement of the wallboard, a sliding block, the sliding groove, the fixing base, the sliding plate, a supporting column, a adjusting device and other structures, moving, splicing and installing of the wallboard are convenient, meanwhile, after moving and installing, a rotary disc is rotated to drive a threaded rod to rotate, rolling wheels are retracted into the fixing base, moving of the wallboard can be avoided, and thus the stability of the wallboard after installation is improved; and through cooperative use of a damp-proof plate, a sound insulation plate and a fireproof plate, the wallboard can have the fireproof, dustproof and sound insulation effects, and the practicability of the slidable assembly type wall is improved.

Disclosed is an open type gear oil comprising asphalt based basic oiling material, adhesive, extreme pressure antiwearing agent, heavy alkyl benzene solvent and 2# solvent including chlorine-containing methane, chlorine-containing ethane and chlorine-containing ethane. The open type gear oil is prepared through mixing the components.

The invention discloses a laser cutting machine used for machining an automobile interior trim part. The cutting machine comprises a machine base, a supporting frame, an upper moving device, a cutting robot, a laser cutting enclosure device, a fixing device, a camera device and an electric control device; the supporting frame is mounted on the machine base, the upper moving device is supported above the machine base through the supporting frame, the upper moving device comprises a gear and rack transmission system driven by a stepping motor, the upper end of the cutting robot is connected with the lower end of the upper moving device, the fixing device is arranged on the machine base and close to the laser cutting enclosure device, the camera device is arranged on a cutting machine inlet and located on the upper portion of the supporting frame, and the electric control device is arranged outside the supporting frame; the laser cutting machine used for machining the automobile interior trim part can increase the cutting range, the laser cutting enclosure device and the cutting clamp fixing device are arranged, the influence on the surroundings is reduced, the fixing time of a cutting clamp is shortened, and the production efficiency is improved.

The invention discloses a totally-enclosed battery box which is high in safety, excellent in radiation effect, explosion-proof effect and flame retardant effect. The battery box comprises a box body, a battery pack and a battery management module (5), wherein the box body comprises a box frame (2), a left cover plate (3) and a right cover plate (4), and the battery pack is formed by connecting a plurality of cylindrical monomer batteries through conductive plates (61, 62) in regular rules; left and right surfaces of the battery pack are covered with heat-conducting silicon sheets (9), and the left cover plate (3) and the right cover plate (4) are respectively fixedly connected with left and right surfaces of the box frame (2) through pressing the heat-conducting silicon sheets (9); and inner walls of the box frame (2), the left cover plate (3) and the right cover plate (4) are plated with a high-heat conducting ceramic material. The totally-enclosed battery box is applicable to providing power supply for electric vehicles.

The invention discloses a self-heating disaster-proof emergency food package and a heating method thereof. The self-heating disaster-proof emergency food package comprises a heat-insulating shell and a self-heating bag, wherein the heat-insulating shell is made of aluminum complex foil pearl wool; the self-heating bag is prepared by arranging a self-heating element in a sealing bag; a mixture of calcium oxide and aluminum powder or magnesium powder serves as the self-heating element; the self-heating bag is wrapped in the heat-insulating shell; a water bag is also arranged in the heat-insulating shell; food with a sealing package is arranged in the heat-insulating shell. During a use process, two heating bags are taken out and are respectively placed on the two sides of the food with the sealing package and are put into the heat-insulating shell, the water bag with metering scales is opened, and then water, the mass of which is 2-3 times of the mass of the self-heating element, is poured onto the self-heating bag, the self-heating bag absorbs water, and then the longer side of the opening port of the heat-insulating shell is bent toward the shorter side so that the opening port of the heat-insulating shell is sealed, and then the sealing is kept for more than 15 minutes till reaching the proper temperature, so that the heating is finished.

The invention discloses a conductive rail type mobile monitoring robot, a monitoring system thereof and a method thereof. The monitoring robot comprises a robot vehicle body. An image pick-up device is fixed on the vehicle body. The robot vehicle body is installed on a walking track, and is limited in the up-down and left-right manner. The walking track is in the horizontal state and penetrates through the robot vehicle body. A walking wheel is rotatably supported in the robot vehicle body. The walking wheel is in contact with the upper end face of the walking track. The walking wheel is fixedly connected with a driving motor. The driving motor is used for driving the walking wheel to rotate, so that the vehicle body can walk and move along the walking track. The driving motor and the image pick-up device are electrically connected with a control system. A conductive rail is fixed on the walking track. A carbon brush is fixed on the vehicle body. The carbon brush is in sliding contactwith the conductive rail on the walking track to be in electric connection with the conductive rail. The carbon brush is electrically connected with the driving motor, the image pick-up device and thecontrol system. In this way, an external power supply electrically connected with the conductive rail supplies power to the monitoring robot. The full-visual-angle monitoring can be achieved, and clear video images are provided. Meanwhile, the target point video information is accurately acquired, and an alarm is automatically given.

The invention relates to a smart socket with dustproof and power-off protection functions. The smart socket comprises a main body, a switch, a plurality of jacks, a dustproof mechanism and a power-offmechanism. The dustproof mechanism comprises a sealing assembly and a dust suction assembly, and the power-off mechanism includes a control assembly and a pop-up assembly. According to the smart socket with the dustproof and power-off protection functions, through arrangement of the dustproof mechanism, in the process that a sealing space defined by a transverse plate and vertical plates covers the jacks to prevent dust, a suction nozzle can suck dust and impurities of the jacks, so that the dustproof effect is further improved. Through dustproof operation of the jacks, the situations that since dust enter the jacks, the contact between plugs and the jacks is poor and even the jacks are blocked are avoided, so that the normal use of the socket is ensured. The plugs can be separated from the jacks through the power-off mechanism, so that power-off and temperature-lowering effects are achieved, the situation that a threat is caused to the life and property of a user since high temperature causes a fire disaster is avoided, and the practicability and reliability of the smart socket are greatly improved.

The invention relates to the technical field of display, in particular to a backlight module, a display device and electronic equipment. The backlight module comprises a rubber frame, a light guide plate, a light source and a photoelectric conversion module arranged departing from the light-outgoing side of the light guide plate, wherein the photoelectric conversion module is used for converting absorbed optical energy into electric energy. The backlight module can be used for converting the optical energy into the electric energy through the additionally arranged photoelectric conversion module, the electric energy can be conveniently supplemented under the condition that the electric energy lacks outdoors, and the service time can be prolonged.

The invention relates to a shield tunnel lifting hole wall penetration outward-extension type electromagnetic wave ground detecting system. The system is composed of an outward-extension type electromagnetic wave emission detecting rod, an outward-extension type electromagnetic wave receiving detecting rod and a hole drilling geological radar, wherein the outward-extension type electromagnetic wave emission detecting rod and the outward-extension type electromagnetic wave receiving detecting rod are connected with a transmitting antenna and a receiving antenna of the hole drilling geological radar. The application of the system includes the following steps that: tomographic scanning is performed on shield tunnel backfill grout through the hole drilling geological radar; the distribution range of the shield tunnel backfill grout can be obtained through data analysis and inversion calculation; and based on field construction parameters and slurry performance, the grouting amount and grouting pressure of subsequent grouting pipes can be fed back and adjusted, and the construction quality of tunnels can be ensured. With the system adopted, the synchronous grouting effect of the shield tunnels in different strata can be detected excellently, and the grouting amount and grouting pressure of field synchronous grouting can be fed back, and therefore, a shield tunnel synchronous grouting control method can be more scientific and more scientific.

The invention relates to a mine flameproof and intrinsic safety type variable frequency speed control device, which comprises a frequency converter consisting of a three-phase rectifier, a filtering capacitor and an IGBT inverter, a control device, and a flameproof case body, wherein the control device comprises an isolating switch, a power frequency and secondary control loop, and a variable frequency and control loop. The variable frequency speed control device has a variable frequency operating mode and a power frequency operating mode, and gives priority to the variable frequency operating mode complemented with the power frequency operating mode, thus the variable frequency speed control device not only can regulate the speed and save energy better, but also has the advantages of dust control, moisture protection, flame protection, and the like; and the variable frequency speed control device adopts digital display, which not only has a function of remote and approach controls, but also has functions of displaying electric energy, namely displaying load electric energy clearly, and temperature control, and has protection functions of surge protection, open phase protection, over voltage protection, under-voltage protection, and the like. The variable frequency speed control device can be applied to underground places with coal dust or gas coal dust explosion in coal mines to perform controls of starting, stopping and variable frequency speed control on a three-phase flameproof motor, and performs various protections on the motor. The variable frequency speed control device adopts a variable frequency speed control method which is advanced and can be widely popularized.

The invention discloses an optical fiber type high-precision tension detection device, which comprises a shell and pulleys arranged at the upper part of the shell, wherein two of the pulleys are arranged at the two sides and are fixedly connected with the shell through fixed rods, the rest middle pulley is positioned between the two pulleys and is fixed on the upper end of a transmission rod, the transmission rod is arranged on the shell, the shell is also internally provided with an optical fiber curved sensing unit, the optical fiber curved sensing unit comprises signal optical fibers, a curved testing passage for the signal optical fibers to pass through and a testing unit butted with the signal optical fibers, the testing unit is also connected with a processing unit, and the curved testing passage also comprises a curved bracket, and a plurality of deformation teeth I and a plurality of deformation teeth II which are continuously arranged at opposite two sides in the curved bracket, and are in corresponding staggered arrangement, and the signal optical fibers are arranged between the deformation teeth I and the deformation teeth II. The optical fiber type high-precision tension detection device disclosed by the invention has the advantages that the design is reasonable, the manufacture is convenient, the suitability is strong, and the measurement to the tension of a cable can be realized.

The invention discloses an oil-immersed high-voltage fuse comprising a base, a fuse carrier, a fusing element, an impactor and a signal output device, wherein the fuse carrier and the fusing element are arranged in the base. The base comprises an outer shell and two conductive rings. The fusing element comprises a fuse tube, a front connecting cap, a rear connecting cap, a framework arranged in the fuse tube, a main fuse body winding the framework and an auxiliary fuse body in parallel connection with the main fuse body. The fuse carrier comprises a handle and two electrically contact couplers. The handle comprises a handle body, a sealing cover, a pull rod and a linkage mechanism, wherein the handle body, the sealing cover, the pull rod and the linkage mechanism are sequentially connected, and the linkage mechanism can be connected with the front end of the sealing cover in a vertically movable mode and is parallel with the pull rod. The impactor is arranged in the rear connecting cap of the fusing element and is connected with the auxiliary fuse body. The signal output device is arranged at the rear end of the handle. After the fusing element moves, the impactor is ejected and pushes the linkage mechanism to move backward, so that the linkage mechanism triggers the signal output device to send a fusing signal. Therefore, people in a wind power generation monitoring station can eliminate faults timely, and maintenance of wind power generation is facilitated.

The invention relates to a composite heat dissipation layer of a power component, a technology of the composite heat dissipation layer of the power component and the power component with the composite heat dissipation layer. The composite heat dissipation layer is formed by compositing at least one thin insulating layer and at least one thin solid metal heat dissipation layer. The bottom layer of the thin composite heat dissipation layer is the thin insulating layer, and the insulating layer located at the bottom layer is used for being closely attached to the outer surface of the power component. After the composite heat dissipation layer is combined with the power component, the thin composite heat dissipation layer formed by compositing at least one thin insulating layer and at least one thin solid metal heat dissipation layer can be formed quickly on the surface of the power component; the thin composite heat dissipation layer can form a cambered heat dissipation layer on the surface of the power component, wherein the heat dissipation layer is of an arbitrary shape and is attached to the component. In this way, the weight of a product is uniform; traditional single sided heat conduction is transformed to multiple sided composite heat conduction by utilizing high heat conductivity of metal ( traditionally, single sided heat conduction is mainly adopted, and the heat conduction is not uniform in different directions); therefore, the heat produced by the power component can be conducted quickly and effectively, the temperature rise of the protected power component is reduced, and the service life of the power component is prolonged.

The invention relates to an integrated type nano inorganic wall light weight heat preservation veneer and a method for preparing the same. The veneer consists of a heat preservation substrate which is formed by the one-piece pressure moulding of a plurality of inorganic mineral materials and a veneering layer, wherein the heat preservation substrate is prepared by husk type expanded perlite light-weight aggregate, cement, silicon oxide micropowder, wood fiber micropowder, organosilicon emulsion and cement reinforcing agent according to the blending ratio; the veneering layer is prepared by quartz sand, calcium carbonate, cement, silicon oxide micropowder and wood fiber micropowder according to the blending ratio and is in one-piece pressure moulding. Compaed with prior art, the veneer has the advantages of light weight, high strength, good heat insulation and heat preservation effects, tight bonding, energy conservation and environmental protection, resource conservation, easy construction, short construction period, low cost and long service life, etc.

The invention relates to a high-precision integrated thermal resistance wireless temperature sensor based on a wireless sensor network. The wireless temperature sensor is composed of a high-precision thermal resistance temperature detection unit, a weak signal detection circuit, a microcontroller circuit, a radio frequency transceiver circuit, and a power supply. The above-mentioned main circuit components are packaged in an integrated airtight casing to meet the waterproof, dustproof and anti-interference requirements of the industrial site. The system senses the temperature signal through the high-precision thermal resistance temperature detection unit, and sends and receives it through radio frequency. The circuit realizes the communication function with the wireless sensor network or other automatic system wirelessly.

The invention discloses a PCB circuit board surface processing method. The method comprises the steps that (a) after PCB circuit board molding, first degreasing, cleaning and drying are carried out; (b) a PCB circuit board is micro-etched by a micro-etching liquid, so that the copper surface is slightly coarsened; (c) a fixture clamps the PCB circuit board and places the PCB circuit board into an ultrasonic cleaning tank, and after cleaning with board washing water, drying is carried out; (d) a three-proofing paint is uniformly modulated, and the PCB circuit board is painted and brushed; and (e) after brushing is completed, the PCB circuit board keeps clean until the PCB circuit board is completely cured. The three-proofing paint is painted on the circuit board. The circuit board is cured to form a transparent protective film. The PCB circuit board has the properties of insulation, moisture proofing, leakage proofing, shock proofing, dust proofing, corrosion proofing, circuit aging proofing, corona resistance and the like.