618results about How to "Easy and flexible installation" patented technology

An accurate high-speed moving vehicle mark identification method based on video belongs to a calculation processing method adopting image and mode identification technology to realize vehicle detection and vehicle mark identification. The present invention mainly comprises five function modules, namely a video camera control module, a motion detection module, a vehicle snapshot module, a vehicle positioning module and a vehicle identification module. The present invention acquires a real-time video image through a camera system, judges whether a vehicle passes by processing the video image, judges the motion direction of the vehicle according to motion characteristics, segments a picture of the moving vehicle from an image sequence, positions a vehicle mark through vehicle texture features, and performs classification identification to a vehicle head mark or a vehicle back mark by utilizing vehicle mark features before and after. The present invention can solve the vehicle model and vehicle mark identification of high-speed running vehicles, especially the identification of vehicle back marks.

The invention relates to the power distribution net monitoring field and provides a real-time state monitoring recognition method for indicator lights of a power device fault indicator. In the method, digital video signals collected by image collecting equipment of a camera, and the like are processed; video frames are extracted from the video signals; monitoring targets are determined, that is the target region of each indicator light in the video frames, and corresponding numbers are distributed; the pixel color change and the intensity roughness of each indicator light in the target regions of two adjacent frames are used for identifying the flash alarming of the fault indicator; specific conditions of faults are determined according to the identified target numbers of the flash alarming and the combinations thereof; the result is real-timely transmitted to a backstage by a distribution communication network to remind working personnel of the fault happening. The real-time state monitoring recognition method realizes the real-time monitoring recognition alarming for the light state of the fault indicator of the power equipment, ensures the reliability of a system, facilitates the installation and the modification of the system and guarantees the safety of installing and maintaining personnel.

The invention discloses a head-raising display device which can realize large-visual-field-angle double-picture displaying and a vehicle with same. The head-raising display device matches an image display unit in use and comprises an image generating unit and an image projection unit which is arranged between the image generating unit and the image display unit. The image generating unit at least can generate a first light beam which represents a first image and a second light beam that represents a second image. The image projection unit at least comprises a first optical module and a second optical module. The first optical module reflects the first light beam and performs beam expanding for forming a first emergent light beam. The second optical module reflects the second light beam and performs beam expanding for forming a second emergent light beam. The first optical module and the second optical module are constructed in a manner that the first emergent light beam and the second emergent light beam are deviated from each other in a manner that an included angle exists between each other, thereby correspondingly projecting a first virtual image picture and a second visual image picture which are not overlapped with each other on the image display unit to the visual field of a user.

The invention relates to the technical field of agricultural machinery, in particular to an automatic whole-row grafting device for grafted seedlings. The device comprises a rack (1), an electric control cabinet (3), a scion conveying mechanism I (5), a scion conveying mechanism II (8), a grafted seedling conveying mechanism (6), a scion clamping mechanism (87), a rootstock clamping mechanism (88), a scion seedling cutting mechanism (17), a rootstock seedling cutting mechanism (11), a scion seedling gathering mechanism (2), a rootstock seedling gathering mechanism (12) and an automatic whole-row grafting clamp conveying mechanism (89). According to the automatic whole-row grafting device for the grafted seedlings, plug seedling supply, whole-row seedling grabbing, seedling cutting, fixing and grafting of plug rootstock seedlings and plug scion seedlings are realized, and the whole operation process is automatically completed by a machine; the plug seedlings are rapidly grafted, the labor efficiency of grafting operation is improved, and the labor force is saved.

The invention discloses a building operation data acquisition system and method based on the LoRa communication technology of the Internet of things, and relates to the technical field of the Internetof things. An external sensor is used for measuring the parameters of a measured object, converting the parameters into digital or mode quantity and sending the digital or mode quantity to a LoRa node acquisition device. The LoRa node acquisition device converts data to LoRa data and then sends the LoRa data to a dual-channel LoRa gateway. The gateway accepts a registration request of the LoRa node acquisition device and stores the LoRa format data on a memory, and the data is converted into Internet format data and then uploaded to a cloud server. The cloud server is used for forming variousmeasured parameter values through analysis according to a communication protocol, and the parameter values are stored and analyzed through a cloud intelligent analysis software. The intelligent terminal device reads the data of the cloud server and displays the collected data according to the requirement of a user. The system is simple and flexible in installation, the cost is low, the cycle is short, the implementation difficulty is low, the accuracy and the efficiency are improved, and normal use of existing constructed buildings is ensured.

The invention discloses a wastewater treatment process monitoring system based on a wireless network. The wastewater treatment process monitoring system based on the wireless network comprises an industrial wireless sensor network, an industrial wireless local area network and a wireless wide area network. The industrial wireless sensor network is responsible for collecting information of field devices of each process of the wastewater treatment. The industrial wireless local area network is responsible for processing the information which is sent by the industrial wireless sensor network and returning the processed data to the field devices at the same time. The wireless wide area network is responsible for transmitting and replying remote monitoring application and sending stoppage information to appointed technical people automatically at regular intervals during the period from stoppage occurrence to stoppage resolution. A traditional distributed collecting and distributing control system is updated to a network control system through different wireless networks, and therefore wireless remote real-time monitoring is truly realized.

The invention provides an air-conditioning system. The air-conditioning system comprises an outdoor unit, at least one indoor unit and at least one gateway, wherein each gateway is connected with the outdoor unit in a wired mode and connected with one or more indoor units in a wireless mode, and each gateway is used for setting the communication addresses of the corresponding indoor units connected in the wireless mode and sending the communication addresses to the corresponding indoor units; all the indoor units send corresponding indoor unit data to the gateways in a wireless communication mode, and the gateways send the indoor unit data to the outdoor unit according to the communication addresses of all the indoor units. According to the air-conditioning system, stable and reliable data interaction is achieved between the outdoor unit and the indoor units through the gateways, the gateways of the air-conditioning system are connected with the outdoor unit in the wired mode to ensure communication quality, and the gateways are connected with the indoor units in a wireless communication mode, so that difficulty of wiring planning is reduced, and installation is flexible and convenient to carry out. In addition, the air-conditioning system has the advantages of being low in project construction cost, cost and power consumption.

The invention provides a technical scheme about a diode laser spectrum synthesizer based on double-grating external cavity feedback. The diode laser spectrum synthesizer includes a diode laser light source, a first grating, a second grating and an external cavity lens; the diode laser light source includes a diode laser stack, a fast axis collimating lens and a slow axis collimating lend; laser beams output by the diode laser light source are incident on the first grating and diffracted, the diffracted light beams are incident on the second grating, and the light beams are incident into the external cavity lens after being subjected to beam combination by the second grating; the external cavity lend is perpendicular to the light beam propagation direction, for providing feedback laser and meanwhile achieving output of light. The diode laser spectrum synthesizer does not have strict requirements on distance between the diode laser light source and the first grating and distance between the second grating and the external cavity lens, reduced in spatial volume of light path, convenient and flexible to install and just and increased in system reliability and engineering feasibility.

The invention discloses a laser frequency hopping underwater acoustic-induced digital communication system and a laser frequency hopping underwater acoustic-induced digital communication method. The reliability and security of both parties of communication in information transmission are guaranteed according to the channel characteristics of a communication environment. According to the invention, atmospheric optical communication and underwater acoustic communication are combined, the laser frequency hopping technology is adopted, a laser emits laser light under the control of a code formed by loading information to different repeated-frequency frames, and laser energy is transmitted by atmosphere to the surface of water and then interacts with water medium through evaporation or breakdown. Thus, optical wave energy is converted into acoustic wave energy which is transmitted underwater in different directions and can be received by an underwater acoustic collector placed in any position within a certain range underwater, and thus, non-line-of-sight data communication from air to underwater can be completed. As long as both parties of communication abide by an agreed laser frequency hopping communication protocol, the information security and privacy of both parties of communication can be guaranteed to a certain extent. Thus, the communication method applicable to an open channel environment has more practical values.

The invention relates to an optical fiber cantilever beam microphone for photoacoustic spectrum detection and a manufacturing method of the microphone. The optical fiber cantilever beam microphone comprises a single-mode optical fiber, an optical fiber ceramic sleeve, a polymer cantilever beam and an annular polymer film for detecting a photoacoustic spectrum signal. The manufacturing method includes the steps: firstly, machining the annular polymer film to form the polymer cantilever beam in a pulse laser etching mode; secondly, fixing the formed polymer cantilever beam and the optical fiber ceramic sleeve in a laser melt cladding mode; finally, forming stable FP (Fabry Perot) cavities in the end faces of the polymer cantilever beam and the single-mode optical fiber. The optical fiber cantilever beam microphone has the advantages of high integration level, small size, sensitivity in detection, intrinsic safety and the like.

The invention relates to a fabricated section-adjustable formwork system for square stiff pillars. The fabricated section-adjustable formwork system is of a rectangular structure formed by four surface formworks. Every two surface formworks are connected with each other through angle-steel positioning members. A plurality of evenly distributed rectangular grooves are formed in each angle-steel positioning member vertically. A plurality of limiting cross beams are arranged on the outer surfaces of the surface formworks. Two ends of each limiting cross beam are located in the corresponding rectangular grooves, and are vertically connected with the corresponding limiting cross beams on the adjacent surface formwork. Each surface formwork is formed by connection of a plurality of standard unit formworks and a non-standard unit formwork. Each limiting cross beam is formed by inserted connection of outer square steel and inner square steel, and the length of each limiting cross beam is adjusted according to the width of the corresponding surface formwork. The formwork system has the advantages that during turnover, damage degree is low, construction speed is high, auxiliary measures are few, and requirements on operation levels of operators are low; the formwork system is applicable to construction requirements of section changes of the square stiff pillars, is environment friendly and has high economic and social benefits.

The invention discloses a construction method of bridge seamless type expansion joint. The construction method of the bridge seamless type expansion joint includes the steps of embedding a sealing strip in the seam portion of the expansion joint, pouring melted 502 elastic-plastic bodies, placing a cross-seam aluminum sheet well, paving various high molecular polymers which fit in with the American society for testing material (ASTM) standard layer by layer, wherein the various high molecular polymers are mixed materials of the 502 elastic-plastic bodies and granite of a corresponding grade, finally using granitic plaster as a surface wearing layer, and the bridge seamless type expansion joint is achieved. The construction method of the bridge seamless type expansion joint has the advantages of satisfying stretch and displacement of an upper portion structure of the bridge, guaranteeing that cars run stably, improving riding comfort, and being strong in elastic restoring force, capable of resisting the high and low temperature, good in plasticity, extensibility, durability, waterproof performance and adhesion performance, long in service life, convenient to install, flexible in installation, rapid in traffic openness and the like. In addition, the construction method of the bridge seamless type expansion joint further has the advantage that the extensible displacement is from 20mm to 50 mm.

The utility model discloses a fence and installation method thereof. The fence comprises a fence post, a platen, a top cover, a crank arm, a mesh, rails, a rail-linking member, bolts and a bolt 2. The fence has the advantages of being high in safety and protection, being accessible to a plurality of occasions, being easy in installation, being convenient and flexible to assemble and disassemble, being high in recycling utilization rate and being capable of lowering manufacture cost.

The invention discloses a part angle alignment method and a clamp thereof. The method comprises the steps that a process alignment block is firstly manufactured according to the structure of a part, a process alignment hole and mounting holes are machined in the process alignment block, and the process alignment hole or an angular straightening face is machined at the zero-degree position of the clamp; then the clamp is mounted on a machine tool, the process alignment hole or the angular straightening face on the clamp is aligned, the zero-degree angular position is set, and the clamp is pressed; the part is mounted on the clamp and pressed; then the process alignment block is mounted on the part through the process alignment hole and the mounting holes in the process alignment block; finally, a dial indicator is used for metering to straighten the angular straightening face on the clamp and align the alignment hole in the clamp to determine the zero-degree position, the process hole in the part or the process alignment hole in the process alignment block is aligned, the zero-degree angular position of the part is determined, and the zero-degree position of the machine tool is determined. The method is simple in operation process, reasonable in step and accurate in alignment, and by directly aligning an angular alignment locating hole in a locating block, the method is convenient to use and suitable for machining of batched parts.

The invention discloses a chain transmission dibble-type pot seedling planting device and a method for the same. The device comprises a rack, a power transmission assembly, a rail control assembly and a pot seedling planting assembly, wherein the power transmission assembly and the rail control assembly are arranged on the rack; the pot seedling planting assembly is arranged on the power transmission assembly, and keeps moving cyclically and perpendicularly under the action of the rail control assembly. The overall structure of the device is vertically arranged, so that the space volume in the horizontal direction is reduced, and the planting device can be arranged more flexibly and conveniently; a unique dibble-type structure is adopted for the pot seedling planting assembly, duckbills are opened and closed in a direction perpendicular to the advancing direction of the planting device in a planting process to prevent seedlings from mechanical damage, and the number of dibbles is regulated to transplant seedlings in different varieties and specifications; the pot seedling planting assembly is driven to move in a chain transmission manner, and is controlled to be kept in a perpendicular attitude by the rail control assembly in a roller and annular rail matching manner, so that transmission stability is ensured, and high-speed pot seedling transplantation operation is facilitated.

The invention provides a tube-plate evaporative condensing air-conditioning unit with packing. The unit comprises an evaporation and air supply unit and a compression and condensing unit. The evaporation and air supply unit consists of a drying and filtering device, an expansion valve, an evaporator and a centrifugal fan which are sequentially connected, and the compression and condensing unit is formed by connecting a compressor and a condenser; the condenser is connected with the drying and filtering device, and the compressor is connected with the evaporator; the air-conditioning unit is provided with a condensate recovery system which is formed by connecting a condensate recovering collector of the evaporator with the condenser by a tube or a water pump; and an indoor air supply system of the evaporation and air supply unit consists of an outdoor fresh air inlet of the evaporator, a unit air supply outlet and the centrifugal fan, or consists of the outdoor fresh air inlet of the evaporator, a unit return air inlet, the unit air supply outlet and the centrifugal fan. The tube-plate evaporative condensing air-conditioning unit has high heat exchange efficiency, and can realize maximal energy recovery and reduction of energy consumption and water consumption, effectively solves increased energy consumption resulting from increased fresh air volume of an air-conditioning system and realizes double performance of saving energy and water and health care.

The invention provides an auxiliary installation rack making transformer installation easy and relates to the technical field of installation racks. The auxiliary installation rack making the transformer installation easy comprises a base, foot pads are welded to the bottom of the base, and the bottoms of the foot pads are movably provided with moving pieces through wheel roller bearing respectively. Bottom screws are arranged on the top of the base, the tops of the bottom screws are movably connected with the bottoms of screw cylinders through bottom bearings respectively, the tops of the screw cylinders penetrate through the bottom of a fixing base, extend into the fixing base and are fixedly connected with the fixing base, a top plate is arranged on the top of the fixing base, and railings are welded to the top of the top plate. According to the auxiliary installation rack making the transformer installation easy, the rotation of a rotating drum can be controlled by rotating a handle, the operation is simple and convenient, the installation rack is detachable, convenient and quick to operate and convenient to carry and transfer.

The invention discloses a reverse osmosis water processing method and a reverse osmosis drainage system in a construction period of a concrete faced rockfill dam. A drainage blind material is arranged in a horizontal interface between a transition area and an upstream rockfill area, a sleeving is connected with one side, arranged on the upper stream, of the drainage blind material, the other side of the sleeving is connected with a horizontal drain pipe with a one-way water stop valve, connection threads are respectively arranged outside two ends of the horizontal drain pipe, the other side of the horizontal drain pipe is connected with a drainage hose, the other end of the drainage hose is placed in a water-collecting well, and a vertical drain pipe is further arranged. The reverse osmosis water processing method and the reverse osmosis drainage system in the construction period of the concrete faced rockfill dam are particularly applicable for reverse drainage in the construction period of the concrete faced rockfill dam, wherein the concrete faced rockfill dam is deep in foundation excavation of riverbed section toe boards, and long in upstream bedding filling construction period, and a dam body needs flood crossing and water retaining.

The invention relates to a water curtain type paint mist filter which is mainly formed by connecting a water tank 1, a gas collecting box 11 and an air exhaust plenum box 8 in series, wherein a gas-water mixing channel 12 is formed in the water tank 1; a diversion rail 5 and a porous water baffle 7 are arranged in the gas collecting box 11; and the air exhaust plenum box 8 is directly and externally connected with an exhaust fan. Paint mist is collided with a water curtain under the suction action of the exhaust fan, particulate matters are completely cleaned in the water, and gas and the water are separated under the action of the diversion rail 5. The separated gas penetrates through the porous water baffle 7 and an activated carbon filter plate 10 to be filtered and is discharged into the atmosphere; and the separated water is drained to an upper flashing plate 3 and a lower flashing plate 2 through an overflow tank 4 so as to form the water curtain, and the recirculation is formed. The water curtain type paint mist filter has the advantage of being a pump-free filter, the exhaust fan in a system can be directly utilized as unique power, and the energy consumption is low; and the filter is simple in structure and flexible to mount, sewage discharge is avoided, and the purification efficiency of the paint mist is over 95 percent.

The invention provides an omni-directional damping single-freedom-degree photoelectric reconnaissance platform device and relates to the technical field of low-altitude remote sensing and aerial photography. The omni-directional damping single-freedom-degree photoelectric reconnaissance platform device solves the problem that an existing photoelectric reconnaissance platform device cannot be suitable for a micro-miniature multi-rotor unmanned aircraft. The omni-directional damping single-freedom-degree photoelectric reconnaissance platform device comprises a supporting frame, a supporting plate connected with the supporting frame, an omni-directional damping mechanism which comprises a base connected with the supporting frame, a substrate fixedly connected with an aircraft, a first nitrogen spring, a fourth nitrogen spring, a fifth nitrogen spring, a second nitrogen spring, a third nitrogen spring, a pitching rotation mechanism which comprises a driving motor fixed on the supporting frame, a crank connected with the driving motor, a first connecting rod connected with the crank, a second connecting rod connected with the first connecting rod, one ends of the first nitrogen spring, the fourth nitrogen spring and the fifth nitrogen spring are connected with the substrate, the other ends of the first nitrogen spring, the fourth nitrogen spring and the fifth nitrogen spring are connected with the base, one ends of the second nitrogen spring and the third nitrogen spring are connected with the base, the other ends of the second nitrogen spring and the third nitrogen spring are connected with the substrate, and the second connecting rod is respectively connected with the supporting plate and a first connecting block respectively. The omni-directional damping single-freedom-degree photoelectric reconnaissance platform device can effectively eliminate vibration in any direction, improves imaging quality, and is simple in structure, low in cost and high in reliability.

The invention provides an embedded machine visual intelligent terminal. A machine visual detection system can be quickly formed by connecting the embedded machine visual intelligent terminal with embedded machine visual measuring and control all-in-one machines through the Ethernet, and combing the flexibility of the terminal, the reliability of a PLC and a distributed network technology. The terminal can be connected with one or more embedded machine visual measuring and control all-in-one machines through the Ethernet and simultaneously display real-time pictures of at most four embedded machine visual measuring and control all-in-one machines and real-time states, modify job files and tool parameters, automatically store error workpiece images and browse or transfer the error workpiece images. The terminal adopts an embedded ARM hardware architecture, uses WinCE5.0 as an operating system, has the characteristics of low cost, small volume, no noise, low power consumption and flexible and convenient mounting and has quite wide application prospect.

The invention relates to an installation tool for a rudderstock hydraulic nut of a supertanker, comprising a positioning block, a splint, a thrust ball bearing and a support plate which are coaxially arranged, wherein a positioning plate is an annular structure which corresponds to a bottom structure of the rudderstock hydraulic nut and is fixed with the top of the annular splint through a plurality of bolts; the thrust ball bearing is arranged between the splint and the support plate which are parallel arranged and is fixed with the splint and the support plate through bolts; and the bottom of the support plate is provided with a plurality of screw holes. The tool jacks up the rudderstock hydraulic nut and screws the rudderstock hydraulic nut to a rudderstock by rotating the rudderstock hydraulic nut, and even if the rudderstock hydraulic nut which is hundreds of catties is simple, convenient and flexible to install. The installation tool has simple structure and convenient hanging and transportation and greatly enhances the safety of the installation process of the rudderstock hydraulic nut.

The invention discloses a micro-injection molding mould with a super-hydrophobic surface of a micro-nano composite structure and a micro-injection molding method. The mould comprises a fixed template. A movable template which can move up and down is arranged below the fixed template, an injection molding cavity is formed between the fixed template and the movable template, and a mould core is mounted in the injection molding cavity; the mould cover comprises a stainless steel made micro punched-plate and a nano aluminum alloy plate. And a micro-structure surface of the micro punched-plate and a nano structure surface of the nano aluminum alloy plate are laminated and overlaid. The mould disclosed by the invention is simple and practical. The prepared super-hydrophobic surface is good in hydrophobic property, surface treatment steps in a later period are reduced, and the problem that in the prior art, the processing difficulty of the super-hydrophobic surface is great, the mould core is poor in tolerance and the prepared super-hydrophobic surface is poor in hydrophobic property.

The invention relates to a quickly-installed manipulator of an attached type tunnel arch, belonging to the field of manipulators. The quickly-installed manipulator of the attached type tunnel arch is attached to a freely moved arm-shaped device. When the quickly-installed manipulator of the attached type tunnel arch works, a formed-steel arch is clamped by a movable clamp, the quickly-installed manipulator of the attached type tunnel arch is driven by the freely moved arm-shaped device to move, and the formed-steel arch is installed in place. The coat of the quickly-installed manipulator of the attached type tunnel arch is greatly reduced, and the quickly-installed manipulator of the attached type tunnel arch is convenient to move and is easy to assemble.

The invention relates to an electric power switchgear switch state image recognition system comprising an off-line training module and an on-line detecting module. The off-line training module collects and trains a large number of switch samples to form a plurality of strong classifiers, and the strong classifiers are loaded in the on-line detecting module. The on-line detecting module transforms the collected switch images to switch gray images and denoises, utilizes the strong classifiers to respectively scan and search the gray images, and obtains the positions and state information of the switches. The invention can realize that the image collection, processing and recognition processes are completed in the on-line detecting module, and overcomes the dependence to communication bandwidth and equipment because videos collected by the traditional video monitoring systems are transmitted to remote background systems through a wired or wireless mode. The invention can automatically determine the positions and the states of the switches in the images, does not need manual operation, has high degree of automation, and is suitable for state recognition of various types of electric power switches.

The invention belongs to underground coal mine mechanical devices and particularly relates to a novel belt conveyor which solves the problems of high energy consumption and poor safety in the existing belt conveyor. The conveyor comprises a body, an unloading portion, a head portion, a belt tensioning portion, a belt winding and unwinding device, a driving device, a transition off-tracking-proof front-arranged support roll group, a rubber belt, a self-movable tail, a belt protection and control system and a video monitoring system. The novel belt conveyor is applied to a working face of an underground coal mine to convey raw coal in a crossheading mode, can be used for long-distance large-quantity transportation, can adapt to various work conditions and roadway conditions, is high in operation stability and energy utilization rate and simple to operate, greatly reduces labor intensity, saves cost and is an ideal transportation device. The performance of the conveyor can meet the requirements of underground coal mine coal transportation for safety, high efficiency and energy saving, and functions of soft starting, soft braking, automatic tensioning, immediate belt tension adjustment, simultaneous driving of the head and the tail, returning of power generation work conditions and electric energy to a grid, belt off tracking adjustment to achieve stable transportation and the like can be achieved.

The invention discloses a retractable castor mechanism of a rack. The retractable castor mechanism is installed in the bottom of the rack, and comprises a supporting part, a screw and a universal castor, wherein an accommodating groove is arranged in the supporting part, an opening in the bottom of the accommodating groove is arranged in a base plate of the rack, the screw is arranged in the supporting part, the top of the screw is provided with a screw cap above the supporting part, the bottom of the screw is provided with the universal castor in the accommodating groove, and the universal castor can extend out of or can be retracted into the accommodating groove by virtue of the regulation of the screw. Compared with the traditional castor of the rack, the retractable castor mechanism of the rack, disclosed by the invention, is more flexible and convenient to transport, the installation cost of the rack is reduced, and the installation efficiency of the rack is improved. Therefore the retractable castor mechanism of the rack has the advantages of being simple in structure, easy to process, low in cost, practical, and capable of being applied to most of the racks.

The invention discloses a reflection-type sunshine illuminating system. The reflecting-type sunshine illuminating system comprises a light collecting device, an optical fiber coupler, a fiber optics bundle, and a semi-light-penetrable semi-trans-form light conduction lighting device, wherein the optical fiber coupler is connected with the light collecting device and is used for enabling sunshine which is collected through the light collecting device to be coupled in optical fibers, the fiber optics bundle is connected with the optical fiber coupler, and the semi-light-penetrable semi-trans-form light conduction lighting device is connected with the fiber optics bundle. The semi-light-penetrable semi-trans-form light conduction lighting device comprises a light guiding pipe and a plurality of semi-light-penetrable semi-trans-form prisms, wherein the plurality of semi-light-penetrable semi-trans-form prisms are arranged inside the light conducting pipe in a distributing mode at intervals. A light outlet is formed in the bottom portion of the light guiding pipe of the semi-light-penetrable semi-trans-form light conduction lighting device and a diffusing device is installed at the portion of the light outlet. The reflection-type sunshine illuminating system is simple in structure, reasonable in design, low in realizing cost, and capable of being widely applied to the fields such as gymnasium illumination, market illumination, underground illumination, underwater illumination, tunnel illumination, and road illumination. Besides, the fields of development and utilization of solar energy and the utilization rate are improved.

A temp. measurer of electronic clinic thermometer is composed of temp. measuring probe (thermosensitive semiconductor diode) and signal processing circuit. Its advantages are high speed and correctness, and the angle of temp. measuring probe variable between 30-90 deg..

A photovoltaic power generation system preventing potential induced degradation includes a photovoltaic array, an inverter square matrix, an alternating current power distribution unit and an isolation transformer. The output end of each battery module in the photovoltaic array is connected with the input end of each inverter in the inverter square matrix; the output end of each inverter is connected with the input end of the alternating current power distribution unit; the output end of the alternating current power distribution unit is connected with the lower voltage side of the isolation transformer, and the high voltage side of isolation transformer is directly connected with a power grid; and each inverter in the inverter square matrix mainly comprises a DC / AC inversion unit, an alternating current auxiliary source, acontroller and an alternating current filtering unit. The photovoltaic power generation system also includes an anti-PID power module arranged at the output end of the alternating current power distribution unit or the low voltage side of the isolation transformer and used for lifting voltage to earth of the alternating current sides and the direct current sides of the inverters; the anti-PID power module can be installed as an independent unit module; and a function of inhibiting a PID effect of the photovoltaic grid-connected power generation system in an inverter working process in the daytime and a function of applying reverse voltage compensation recovery aiming at the PID effect when the inverters are disconnected with a network in the nighttime can be realized.