51results about How to "No electromagnetic pollution" patented technology

The invention discloses an indoor positioning system and positioning method for ultrasound radio frequency signal combined processing. The indoor positioning system comprises three kinds of basic nodes which are anchor nodes, mobile nodes and display control nodes. The anchor nodes are fixed nodes with spatial positions known, the mobile nodes are active nodes with position coordinates needing to be determined in space, and the display control nodes display a system topological structure and node positioning results in real time and perform coordination control on the whole system. The anchor nodes and the mobile nodes perform contact by adopting radio frequency and ultrasonic signals, data processing is performed on received sound signals on the anchor nodes or the mobile nodes, spatial three-dimensional coordinates of the mobile nodes are solved, and system positioning results are finally displayed on the display control nodes. Compared with ultra-wideband radio frequency, WIFI radio frequency, video images and the like, the ultrasonic positioning system has the advantages of being prominent in performance, low in cost, high in privacy and free of electromagnetic pollution and is a first choice technology for indoor position services.

The invention relates to a system utilizing CMMB (China mobile multimedia broadcasting) signals to detect a target and a method thereof. The system comprises a receiving antenna, an analog chassis with a signal simulating and receiving component, a CPCI (compact peripheral component interconnect) chassis with a signal acquisition and processing component, at least one disc array chassis with a signal storage component, a switchboard and a signal process for signal processing, which are connected in sequence. The analog reception adopts a scheme of secondary mixed frequency and fixed medium frequency; the data acquisition adopts a scheme of medium-frequency bandpass sampling and digital down-conversion; the data storage adopts a high-speed disc array; and the data processor is used for implementing such operations as signal reconstruction, channel correction, direct wave suppression, digital beam formation, inter-ambiguity function, peak detection, constant false alarm detection, positioning and tracking and the like, and final output of information of the target distance, speed and direction. The system has the following advantages of no need for frequency distribution, no electromagnetic pollution, high signal randomness, high signal interception performance, large signal bandwidth, high distance resolution, low research and maintenance cost, and high mobility.

The present invention refers to environmental protection type intelligent current-reducing and energy-saving control equipment method for street lamp. It contains single lamp controller circuit and street lamp circuit, wherein single lamp controller circuit module consisting of LCU control circuit module and multiple tapping power reducing ballast module, the output of said LCU control circuit respectively connected with one end of multiple tapping power reducing ballast, ac compensation capacitor module and street lamp circuit module through one end of multiple step control equipment of 220 ac power supply. Said invention has advantages of realizing single lamp independent timing or networking control, street lamp soft startups control, and street lamp relative constant power control etc, without harmonic contamination to electric power network, and prolonging street lamp service life.

The invention discloses a parking lot automatic guiding system based on the position service and an implementation method. The parking lot automatic guiding system comprises a reference transceiver fixed to the roof of an indoor parking lot, a vehicle-mounted transceiver arranged on a vehicle of a vehicle owner, and a display processing device, wherein the reference transceiver contacts with the vehicle-mounted transceiver through radio-frequency and ultrasonic signals. The reference transceiver and the vehicle-mounted transceiver transmit the signals to the display processing device, and then data processing is conducted so that the space three-dimensional coordinates of the vehicle where the vehicle-mounted transceiver is located can be solved and the target vehicle can be guided according to the space three-dimensional coordinates. The display processing device displays spare stall information of the parking lot in real time, dynamically issues parking space guiding and exit guiding information, and sends the displayed information to a smart phone of the vehicle owner. The parking lot automatic guiding system is based on the ultrasonic positioning mechanism and has the advantages of being accurate in positioning, low in cost, high in privacy, free of electromagnetic pollution, and the like.

The invention discloses an underwater voice communication system through a light-emitting diode (LED) light source and a diving helmet. The LED light signal of the LED light source is used as a carrier for voice communication underwater for a diver. Compared with the underwater voice communication technology adopting the acoustic technology in the prior art, the underwater voice communication manner adopting the acoustic technology has the advantages of high bandwidth, small propagation delay, high propagation rate and the like.

The method is as the follows: setting measured object on platform with rotation axis and to make the rotation axis be vertical to reference plane, disposing light source and camera to be used as measuring device and to make lens aligned to measured object sideface so as to produce image at measured object sideface by reflected light on the camera, setting lateral axis u and vertical axis v as coordinate system for formed image with original point at image centre and detection point at cross point of passing vertical axis by top or bottom plane of measured object and its sideface, describing parallel state of measured object plane relatively to the reference plane by measuring value of image position at detection point in rotation and to finally determine nonparallelism of the two as well as regulation position.

The invention provides a portable electronic equipment bracket (method) capable of being opened by controlling a shape memory alloy, which is used for a mobile phone, a panel personal computer, a PDA (Personal Digital Assistant), an electronic book reader, a digital player and the like. The portable electronic equipment bracket capable of being opened by controlling the shape memory alloy comprises a bracket with a stretching elastic force, a clamping hook arranged on portable electronic equipment for preventing the bracket from being opened, and the shape memory alloy capable of driving the clamping hook after being heated. The shape memory alloy can drive the clamping hook to open the bracket after being heated and the bracket is opened by the elastic force, so that the shape memory alloy is controlled to heat through an electric signal to open the bracket. A user can open the portable electronic equipment bracket through operations of a key or a touch screen.

The invention relates to a wireless monitoring positioning system for a tunnel. The system is mainly technically characterized by consisting of an overall command center, a tunnel portal monitoring room, a transmission part and a monitoring positioning part, wherein the overall command center comprises a monitoring host, an indoor light-emitting diode (LED) display screen, a digital video recorder and a forwarding server; the tunnel portal monitoring room comprises a host computer and an outdoor single-color LED display screen; the transmission part comprises a wireless network server and a wireless network bridge; and the monitoring positioning part comprises a positioning system and a video monitoring system. The wireless monitoring positioning system for the tunnel acquires construction information in real time to comprehensively, timely and accurately master information about a construction party and constructors to realize the modernization, informatization and intellectualization of management, and is technically advanced in China, stable in running and specialized in design.

The invention is a micro-consumption reciprocator, provided with coil, the framework of the coils holds an annular soft iron core, there are permanent magnets arranged on two ends of the soft iron core, the magnet poles are opposite and connected by a post, and top structural plate and parallel are installed on two ends and fixed by bolts; as it applies a pulse current on the coil, the generated polarities and the polarities of the permanent magnets form the condition that the same polarities are mutually repulsive and the different polarities are mutually attractive and then bring about reciprocating motion, and it does not use the current to maintain the work, and can not make the coil heated and burnt, realizing the advantages of high electricity saving, reliable action, stability, simplicity, no noise, etc; it is used in electromagnetic valves, relays, breakers, protectors, contactors, and other switch products to form various series of independent products widely applied in industry, agriculture, national defence and spaceflight&aviation. It is used in lock products, able to interface with monitoring system and intelligentize, and able to be widely applied to civil houses, automobiles, housing estate management and safety departments.

The invention relates to a dynamic reactive compensation system based on a magnetic control electric reactor. The dynamic reactive compensation system comprises a passive filter FC and an MCR (Magnetic Control Reactor), wherein the passive filter FC is used for reactive compensation and harmonic filter, the MCR is used for balancing an inductive load. The dynamic reactive compensation system disclosed by the invention has the advantages that the reliability if high, 20-year basic maintenance-free running can be realized, and the maintaining and repairing cost can be reduced to a large extent; the response ability is quick, and the response speed can be up to 20ms; the regulating range is large, and the regulating range in more than 100 times can be reached; the occupied area is small, the installation is convenient, and a device can be naturally cooled by adopting an oil immersion mode; the harmonic wave is small and has no pollution to a power grid and has no any bad influence on a capacitor group, and the traditional device is conveniently utilized in a reform occasion; the overload ability is strong, 30-second 100% overload and half-hour 40% overload can be realized; the consumption is less, the MCR is in large capacity, the consumption is less than 0.5%, and in a common system, only 0.8%-1.5% of the consumption can be realized; the overvoltage ability is strong, the voltage limiting ability is good, and the dynamic reactive compensation system has a natural automatic voltage limiting ability; and no electromagnetic pollution works on the environment and the human body.

The invention relates to an engine, specifically discloses a fuel cell engine, and is used for solving the problem that a fuel cell is utilized as a power source of a rail engine. The fuel cell engine comprises an engine body (1), a driving system and a running system, wherein the running system comprises two two-shaft gear box type steering frames (2); the driving system comprises two permanent magnet synchronization traction motors (3), two traction invertors (4) which can covert the direct current into frequency-adjustable voltage-adjustable three-phase alternating current and a fuel cell (5); the output shaft of each permanent magnet synchronization traction motor (3) is respectively connected with gear boxes of the steering frames (2) through a universal coupling; and the input ends of the traction invertors (4) are connected with the output end of the fuel cell (5). The fuel cell engine provided by the invention has the advantages that the design is reasonable, and the structure is simple.

The invention discloses an integrated type LED floodlight lamp, which comprises a shell, end covers, a light-transmitting panel, an LED light source, an LED power supply, a driving control circuit, a reflection device and an installation support, wherein the shell is arranged on the installation support; the end covers are clamped at both ends of the shell, the light-transmitting panel is clamped at the upper end of the shell, and the shell, the end covers and the light-transmitting panel form a seal space through combination; the LED light source is fixedly arranged on the inner wall of the shell; the LED power supply and the driving control circuit are arranged on the inner walls of the end covers or outside the lamp; the reflection device is arranged at the position opposite to the light source on the inner wall of the shell; and the LED power supply and the driving control circuit are electrically connected with the LED light source and have no thermal contact with the LED light source. The integrated type LED floodlight lamp has the advantages of no glare, uniform light distribution, high-efficiency heat-dissipating effect, low energy consumption, long service life, small attenuation of light energy, low production cost and simple machining.

The invention discloses a magneto-electric rotation reciprocating device which comprises a first component and a second component. The first component comprises a core and a coil. The coil is wound on at least one end of the core, and the second component comprises a permanent magnet and a connecting rod group. The permanent magnet is arranged in the core, and a gap exists between the permanent magnet and the core. The permanent magnet is connected with the connecting rod group. When positive or negative pulse current flows in the coil, attracted or repellent acting force is generated between the permanent magnet and the core, and the permanent magnet drives the connecting rod group to rotate. Due to the fact that the permanent magnet is radially magnetized and arranged in the core and the permanent magnet attracts different geometric shaft radiuses of the core, the problem that the coil is heated and burned off is solved.

The invention relates to a phase-change switch for a three-phase unbalance treatment device and a phase-change method thereof. The phase-change switch comprises a phase-change switch shell and a three-phase thyristor valve-AC contactor parallel structure and a trigger board encapsulated in the shell; and the thyristor valve-AC contactor parallel structure is connected with a current transformer. The phase-change method comprises the following steps: keeping the phase-change switch in a working phase, wherein the AC contactor in the working phase is closed and the thyristor is latched; the AC contactor in a non-working phase is in a break-brake state and the thyristor is latched; and when the three-phase unbalance of a power system exceeds the national standard, switching the phase-change switch to a low load phase. The technical scheme provided by the invention adopts a mode that the contactor is used in parallel with the thyristor, and combines the characteristics that the running power consumption of the contactor is small and the switching speed of the thyristor is fast, so that the phase-change switch of the three-phase unbalance treatment device has both the advantages of the AC contactor and a power electronic fling-cut switch, thus there is no power outage in the phase change process and no impact on the system at the same time.

The invention discloses a totally-sealed normal-temperature self-circulating energy-saving mute special server case. A cold air internal loop, a hot air internal loop and at least two brackets are arranged in the case; side edges of two sides of each bracket are hermetically fixed to the inner wall of the totally-sealed case, and gaps are formed between another two side edges of the bracket and the inner wall; the cold air internal loop and the hot air internal loop consist of spaces between the gaps and the two brackets; the totally-sealed case is provided with a heat exchanger; the heat exchanger communicates with the cold air internal loop and the hot air internal loop; and the heat exchanger is provided with a fan. According to the case, sealed cooling is realized, so that the reliability of a server is greatly improved.

The invention discloses a triangular iron core reactor, which comprises three columnar iron cores, coils, an upper yoke iron and a lower yoke iron, wherein the three columnar iron cores are symmetrically arranged in 120 degrees; the coils are wound on the three columnar iron cores respectively; and the upper yoke iron and the lower yoke iron are connected with the three columnar iron cores respectively to form a whole. The three columnar iron cores have a triangular symmetric structure in 120 degrees relative to the centers of the upper yoke iron and the lower yoke iron. Because the triangular iron core reactor consists of the upper yoke iron and the lower yoke iron, the three columnar iron cores distributed in 120 degrees and the columnar iron coils which are connected to form a whole, the three-phase magnetic circuits of the reactor are balanced and symmetric, and the reactor self does not initiate harmonic wave.

The invention provides a 20KV vacuum switch cabinet non-contact switch which resolves the problem that impact on power grids and electrical equipment is caused because electric arc is generated during operational processes of turn-on and turn-off of high-voltage switches in the prior art. The 20KV vacuum switch cabinet non-contact switch comprises a non-contact switch device and a trigger controller. The non-contact switch device is used for avoiding generating electric arc during a circuit switching process. The trigger controller is used for generating trigger pulse so as to synchronously control the non-contact switch device and is connected with the non-contact switch device. By means of the 20KV vacuum switch cabinet non-contact switch, electric arc or spark does not occur during turn-on and turn off processes, impact on power grids and electrical equipment is reduced to the minimum degree, stability and reliability of power grids are enhanced, and service life of electrical equipment and high-voltage switches is prolonged. In addition, the 20KV vacuum switch cabinet non-contact switch is quick in operation, can be operated frequently, and is long in service life, high in reliability and capable of being used in special fireproof, anti-explosion and moisture-proof environments.

The invention relates to an efficient and environmental friendly AC-DC conversion isolation power supply circuit, which can solve the problem that the prior art has high requirements for resources and is harmful for environmental protection and low in efficiency. Main points of the technical solution are that the efficient and environmental friendly AC-DC conversion isolation power supply circuit comprises an input port and an output port, the input port is connected with an AC power supply, and the output port outputs direct current. The efficient and environmental friendly AC-DC conversion isolation power supply circuit further comprises a positive transforming circuit, a negative transforming circuit, a positive triggering circuit, a negative triggering circuit, a positive conductive switching circuit, a negative conductive switching circuit, a positive filtering circuit and a negative filtering circuit, wherein the positive transforming circuit and the negative transforming circuit transform by adopting a charging and discharging mode. The AC-DC conversion isolation power supply circuit provided by the invention is efficient and environmental friendly. The AC-DC conversion isolation power supply circuit does not need electromagnetic coil transformation, is low in production cost, small in occupied space, has no electromagnetic pollution, and does not have electromagnetic coil loss. Adoption of an optocoupler enables isolation to be effective, and the AC-DC conversion isolation power supply circuit has the substantial effects of low cost, high driving power, high efficiency and environmental protection.

Current voltage regulation mode for main loop of gas metal-arc welding is not digital. Disadvantages are: unable to control remotely or complex, not easy of maintenance, not high reliability, existed high order harmonic, and electromagnetic pollution etc. The method adopted in the invention sets up one basic winding and n pieces of regulating winding at primary side of each phase of transformer. Numbers of turns in each regulating winding are arranged according to 8, 4, 2, 1 codes in binary decimal system. When basic winding and n pieces of regulating winding are switched in series, the output voltage at secondary side is dependent to total number of turns of n pieces of regulating winding connected to basic winding in series. Thus, main loop of welder is in analog type changed to digital type so as to overcome the said disadvantages.

The invention discloses a pneumatic stirring device and a using method, and belongs to the field of analysis and test instruments. The pneumatic stirring device comprises an air storage bag, air ducts, an electromagnetic valve, a singlechip, a data wire and an intake needle; the air storage bag is connected with the electromagnetic valve by an air duct, the electromagnetic valve is connected with the intake needle by an air duct, and according to the titration stirring requirement, the singlechip transmits signals via the data wire to control the action of the electromagnetic valve so as to control the ventilation time length and cycle of the pneumatic device. Gas which does not influence the chemical reaction is injected from the bottom, and the reaction solution is stirred to accelerate the mass transfer process of materials in the solution, so that the titration efficiency is improved; and the pneumatic stirring device is simple in structure and high in automation degree, and does not bring electromagnetic pollution.

The invention discloses a heating device. The device comprises an insulating layer, a heating assembly, a hard heat preservation layer and a soft heat preservation layer; the insulating layer, the heating assembly, the hard insulating layer, the soft insulating layer and the heat preservation shell are sequentially arranged from the inner layer to the outer layer; the heating assembly is located on the plane of the insulating layer arranged on the insulating layer side by side; the heat preservation layer is located on the heating assembly and arranged on the heating assembly side by side; andthe heat preservation shell is located on the heat preservation layer and covers the heat preservation layer. The heating device has a good energy-saving effect and is used for industrial heating, such as heating of an asphalt machine, a lead melting machine, a pulp paper electric heating plate, an industrial square pipeline and a square plane box body of an extruder.

The invention discloses a surface-mount type strong-magnetism electric control permanent magnet template with a honeycomb array structure. The surface-mount type strong-magnetism electric control permanent magnet template is characterized in that a first strong-magnetism electric control permanent magnet system (2) is an orthohexagonal honeycomb unit structure; a second strong magnetic electric control permanent magnet system (3) is a rhombus structure; three rhombus units form one orthohexagonal honeycomb unit structure; a compound reversible strong-magnetism permanent magnet (34) is compounded by a reversible strong-magnetism permanent magnet (34a) and a magnetism conducting material (34b); a pulse coil (33) is coated on the external surface of the reversible strong-magnetism permanent magnet (34a); the polar surface of the magnetism conducting material (34b) is clung to the inner polar surface of a magnetism conducting substrate (31). The surface-mount type strong-magnetism electric control permanent magnet template is capable of utilizing the effective space to a maximum extent, so that the effective attraction force of the electric control permanent magnet in per unit of area is improved; the surface-mount type strong-magnetism electric control permanent magnet template with the honeycomb array structure is free of electromagnetic pollution to the surrounding environment.

The invention relates to recovering sound wave massaging equipment assisted by artificial intelligence. The recovering sound wave massaging equipment mainly consists of a sound wave signal generator,a power source connector, an input over-current over-voltage protector, a signal strength controller, a computer control interface, an output over-current protector, a power source switch, a signal transmitting cable, a massaging coat and a sound wave vibrator appliance, wherein the sound wave signal generator is formed by the combination of electric elements including a transformer, a transistor,a resistor, a capacitor, an integrated electric circuit and the like, and is used for generating alternating sound wave frequency as an output sound wave signal, and the output end of the sound wavesignal generator is connected with the signal transmitting cable; the sound wave vibrator appliance is a piezoelectric material appliance for converting sound wave energy into mechanical kinetic energy; the sound wave vibrator appliance is fixed in the massaging coat; the sound wave vibrator appliance is connected with the signal transmitting cable; and the sound wave signal generator outputs a sound wave signal, then the signal is transmitted to the sound wave vibrator appliance through the signal transmitting cable, and when the sound wave vibrator appliance obtains the sound wave signal, the sound wave vibrator appliance is in back-and-forth periodicity vibration.

The invention discloses an underground worker tracking and positioning system device which comprises a software system and a hardware system device. The software system is burned in the hardware system device and comprises application software and embedded software which are connected. The hardware system device comprises an underground substation device, a transmitting antenna, a receiving antenna, a data interface, a fingerprint instrument, an attendance machine and an identification card. The underground substation device, the transmitting antenna, the receiving antenna, the data interface, the fingerprint instrument, the attendance machine and the identification card are connected. Due to the fact that the software system and the hardware system device of a monitoring system device are improved, the tracking and positioning device has the advantages of being long in transmission distance, free of blind zones of identification, high in signal penetrating power, free of electromagnetic pollution to human body and high in capacity for being adaptive to environment, and remote monitoring of network connection and a fault self diagnosis are convenient.

The invention provides a self-powered transmission device, a wireless control system and a wireless control method of the wireless control system. The wireless control system comprises the self-powered transmission device, a decoding module and at least one piece of terminal equipment. The self-powered transmission device transmits at least one piece of short code data information on the basis of a short code communication protocol, wherein the decoding module receives the short code data information transmitted by the self-powered transmission device and parses the short code data information so as to obtain control data sent by the self-powered transmission device, wherein the terminal equipment is in communication connection to the decoding module, and the decoding module outputs the control data obtained by parsing to the terminal equipment so as to control a working state of the terminal equipment.

The invention discloses a magnetic shielding tube-type electromagnetic induction heating device, which comprises an electromagnetic induction heating packet and a temperature sensor. The magnetic shielding tube-type electromagnetic induction heating device is characterized in that the electromagnetic induction heating packet comprises a protective shell, a high-frequency electromagnetic induction body and a thermal insulation layer; the electromagnetic induction heating packet surrounds and wraps the outer surface of a charging barrel; the charging barrel is made of a conductive material; and the high-frequency electromagnetic induction body is in a retractable tubular structure. According to the magnetic shielding tube-type electromagnetic induction heating device, the problems that the electromagnetic induction heating device in the prior art is high in energy consumption, low in efficiency and high in environment temperature, and has potential safety hazards; the control accuracy on the temperature cannot reach the technological requirements; and normal operation of surrounding equipment is affected or a human body is injured by electromagnetic leakage are effectively solved, so that the magnetic shielding tube-type electromagnetic induction heating device is efficient, energy-saving, low in operation cost, low in maintenance amount, moderate and comfortable in working environment temperature, little in external electromagnetic leakage, free of electromagnetic pollution to surroundings, and environment-friendly; and the control accuracy on the temperature can reach 1 DEG C.

This invention relates to one integration structure and method to realize information transmission and energy supply simultaneously and provides one Special scheme to integrate the energy supply and information transmission, which Loads the codes of telephone, television and network information through information loading system onto transmission medium net and uses net self high energy to send out the information's and uses decoder on the user terminal on the net to send the information to the application terminal to realize the information communication without other information special wire and only with power plug.

The invention provides a metal solid waste treatment system. The system comprises an ozone generation unit, an aeration unit, a stirring unit and a precipitation unit, wherein the ozone generation unit communicates with the aeration unit through one pipeline; the aeration unit extends into the stirring unit; and the stirring unit communicates with the precipitation unit through one pipeline. The invention further provides a using method of the metal solid waste treatment system. According to the metal solid waste treatment system, the ozone generation unit is adopted, thus the generated ozone is high in concentration and free of pollution, electrode consumption is low, the influence of environment temperature and humidity is avoided, the maintenance cost is low, metal solid waste after ozone oxidation is rapidly precipitated and separated under the action of a flocculating agent, and the waste is changed into wealth.

The invention relates to a circuit structure for isolating a one-pole ground fault of a branch power supply of a main DC system. The circuit structure adopts a shunt relay to make diodes of shunted main power supply and stand-by power supply operated in parallel so as to ensure the reliability of the power supplies; the circuit structure utilizes that the stand-by power supply is 5V higher than the main power supply and a positive or negative-pole short-circuit relay contact cuts off positive or negative-pole parallel diodes so as to force negative or positive-pole parallel diodes in the nth loop of a point to cut off; and the circuit structure thoroughly isolates the one-pole ground fault of each branch power supply of the main DC system in a time sharing way so as to have the isolation function of monitoring ground insulation resistance of each branch loop. The circuit structure has the advantages of laying a foundation for measuring the ground insulation resistance of each branch loop with high sensitivity and high precision so as to achieve the effect of comprehensively monitoring insulation of the DC system on line by using a full DC method.