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33results about How to "No external power supply required" patented technology
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Method for treating high-concentration acidic wastewater containing phosphorus and fluorine
InactiveCN102070267AReduce fluorine contentReduce phosphorus contentWater contaminantsMultistage water/sewage treatmentAluminium saltsChemistry
The invention discloses a method for treating acidic wastewater containing phosphorus and fluorine, which comprises the following steps: (1) firstly, adding calcium hydroxide into the acidic wastewater containing phosphorus and fluorine, and controlling the pH value of the system at 12-14 to obtain a precipitate-containing reaction system which is marked as a reaction system 1; (2) removing the precipitate in the reaction system 1, adding sulfuric acid into the residual liquid to regulate the pH value to 9-11, and then, adding aluminum sulfate to regulate the pH value to 6-7, thereby obtaining a precipitate-containing reaction system 2; and (3) settling down the precipitate in the reaction system 2, and removing the precipitate to obtain the treated wastewater. In the wastewater treated by the method disclosed by the invention, the content of fluorine is lower than 10 mg / L, the content of phosphorus is lower than 0.5 mg / L, and the pH value is 6-7, thus the treated wastewater achieves the Discharge Standard of Water Pollutants for Phosphate Fertilizer Industry (GB 15580-95). In the whole technological process, water overflows under the action of the gravity without an external energy supply, thereby saving the energy.
Owner:湖北大峪口化工有限责任公司
FPGA (Field Programmable Gate Array) based high-voltage series connection (Insulated Gate Bipolar Transistor) gate driving unit and method
ActiveCN104201871AGuaranteed uptimeImprove reliabilityPower conversion systemsFailure rateHardware structure
The invention discloses an FPGA (Field Programmable Gate Array) based high-voltage series connection (Insulated Gate Bipolar Transistor) gate driving unit and method. The gate driving unit comprises an FPGA, a trigger shutdown circuit which is electrically connected with the FPGA, a voltage monitoring loop, a self-created circuit, a dynamic voltage-sharing circuit, a static voltage-sharing circuit and a photovoltaic conversion circuit; the FPGA monitors real-time voltage at two ends of an IGBT and whether IGBT states are normal or not through the voltage monitoring loop and controls storage capacitance inside the self-created circuit through the voltage at two ends of the IGBT; the photovoltaic conversion circuit is connected with a valve control device through an optical fiber, receives IGBT trigger and shutoff signals sending from the valve control device and sends IGBT operation states to the valve control device. The gate driving unit simultaneously achieves complex logic functions such as self-created energy, voltage sharing, working condition monitoring, triggering, shutdown, command receiving and status information returning, is simple and reliable in hardware structure and low in failure rate and guarantees reliable and stable operation of the IGBT.
Owner:HOHAI UNIV
Method and device for oil production by means of mixed hydrothermal decomposition of kitchen garbage and microalgae
InactiveCN109022057AImprove photosynthetic efficiencyLarge biomassLiquid carbonaceous fuelsFatty-oils/fats productionExternal energyDecomposition
The invention discloses a method and a device for oil production by means of mixed hydrothermal decomposition of kitchen garbage and microalgae. The method comprises the following steps: carrying outpretreatment on raw materials, i.e., the kitchen garbage and the microalgae to obtain slurry; (2) sealing a hydrothermal reaction device with high temperature and high pressure, and adjusting the initial pressure in the reaction device; (3) inputting the mixed slurry into the hydrothermal reaction device for carrying out a co-liquefaction reaction; (4) carrying out solid-liquid separation on sinking products after the reaction is finished, drying solids obtained by means of the solid-liquid separation, then inputting into a combustion apparatus for burning, and inputting the liquid and the gasobtained after the hydrothermal reaction into a cracking device together for cracking; (5) carrying out gas-liquid separation on the product obtained by cracking, and then condensing the liquid obtained by means of the gas-liquid separation to obtain refined oil; drying the separated non-condensable gas, and then directly entering the combustion apparatus for burning; (6) using the flue gas extracted from the combustion apparatus to provide heat for the hydrothermal reaction device and the cracking device. The method and the device do not need external energy supply, can continuously run, ishigh in production efficiency, and can be used for large-scale bio-oil production.
Owner:SOUTH CHINA UNIV OF TECH
Multi-touch piezoelectric warning circuit
A multi-touch piezoelectric warning circuit comprises an energy storage circuit and an alarm circuit. The multi-touch piezoelectric warning circuit adopts three triggering modes, the first mode is that a produced current fluctuation signal is transferred to a 555 timer chip to give an alarm when a piezoelectric sensor produces vibration, the second mode is that the produced fluctuation signal is transferred to a 555 timer chip to give an alarm when an electrode plate produces vibration, the third mode is that a TR interface of the 555 timer chip is connected with a grounding wire to produce low level and give an alarm when a vibration sensor produces vibration. Energy used by the multi-touch piezoelectric warning circuit is produced through the piezoelectric sensor and stored for utilization, and the piezoelectric sensor is a multi-layer composite plate or a beam structure and comprises a piezoelectric layer and a metal base layer. The multi-touch piezoelectric warning circuit is high in sensitivity and reliability, uses self-generated electricity energy and does not need battery replacement or external charging and other operations.
Owner:BEIJING UNIV OF TECH
Serial port communication module
ActiveCN110071816ARealize the intention of the inventionImprove performanceData switching current supplyCurrent limitingComputer module
A signal communication module based on serial communication interface communication and self power supply is composed of a plug, a power taking circuit, a graded power supply circuit, an MCU circuit,a communication circuit and a shell. The power taking circuit comprises a limiting input cable, a polarity conversion circuit, a voltage stabilization output circuit and an input protection circuit. The power taking circuit obtains electric energy from an electric signal used for communication on a communication signal line (such as TxD) of a serial port, and signal communication and self power taking are completed through current limiting, voltage limiting, frequency limiting and related processing under the condition that serial port communication is not affected. The serial port communication module further comprises sniffing logic, when the input end is connected with the refrigerated container, the brand model of the container can be automatically identified, and information is communicated with the external logic through the communication circuit. The module is applied to container ships, land container transport vehicles, container wharfs and container storage yards and serves as core equipment for container remote measurement and control.
Owner:深圳艾迪宝智能系统有限公司
Dustproof heat dissipation device of computer case
InactiveCN112732051AAvoid enteringAvoid affecting workDigital data processing detailsThermodynamicsHeat conducting
The invention discloses a dustproof heat dissipation device of a computer case, and the device comprises a case body; a heat dissipation water pipe is fixedly connected to the inner wall of the case body, a heat conduction plate is embedded in each of the inner wall and the outer wall of one side of the case body, a circulating pipe is arranged in the case body, one part of the circulating pipe is located in the heat dissipation water pipe, the heat dissipation water pipe and the circulating pipe are concentrically arranged, and the other part of the circulating pipe is buried in the side wall of the case body and is close to the outer wall part of the case body. The device has the advantages that the heat conducting plates made of two different metals are respectively arranged on the inner and outer box walls of the case, the sliding of the sliding plate is controlled under the action of Seebeck effect, and meanwhile, the sliding plate slides up and down in a reciprocating manner by utilizing the change of electromotive force caused by temperature difference change, serving as power for circulating the liquid in the circulating pipe and the heat dissipation water pipe, the heat dissipation and cooling of the case are completed, good spontaneousness is achieved, and external power supply is not needed.
Owner:饶秀举
Pulse output type rotation speed sensor
InactiveCN102435765ANo external power supply requiredStrong output signalDevices using electric/magnetic meansSoft magnetMechanical wear
The invention discloses a pulse output type rotation speed sensor, which comprises a gear disc installed on a rotation shaft, a magnetic pulse sensing permanent magnet, a soft magnet, an induction coil assembly, and a built-in signal reshaping circuit. The pulse output type rotation speed sensor disclosed by the invention can directly output large-amplitude pulse signals and has very strong anti-interference performance. The pulse output type rotation speed sensor adopts a passive designing technology and does not need external power supply, has the advantages of high intensity of output signals, strong anti-interference capability, no need of power supply, convenience in installation and use, no mechanical wear, long service life, and no need of control and provision of any excitation circuit, and can be used in smog, oil gas, hydrosphere and other environments.
Owner:CHENGDU FANXINJIA TECH
Islet energy system and working method thereof
ActiveCN107579535ARenewable Comprehensive UtilizationRealize comprehensive utilizationElectrical storage systemEnergy storageIslandingThermal energy
The invention relates to the field of energy storage and utilization and discloses an islet energy system and a working method thereof. The islet energy system comprises a bidirectional energy storageinverter, a photovoltaic subsystem, an optical thermal subsystem, an absorption refrigeration subsystem and an energy storage subsystem, wherein the photovoltaic subsystem is powered on at day time to generate power through solar energy; power is output from the photovoltaic subsystem; direct current is converted into alternative current to be supplied to users through the bidirectional energy storage inverter; extra current is stored in the energy storage subsystem; the optical thermal subsystem is used for generating and storing thermal energy from solar energy; the absorption refrigerationsubsystem is used for generating cold energy from electric energy and thermal energy; the energy storage subsystem is powered on at night; power is output from the energy storage subsystem and is rectified by the bidirectional energy storage inverter to be supplied to users; the absorption refrigeration subsystem is driven through electric energy and thermal energy, and cold energy is generated.By using an energy storage technique and a bidirectional energy storage inversion technique, power supply, heat supply and cold supply to an islet are achieved under the condition that no large powergrid support is available, external power supply is not needed, and comprehensive utilization of renewable energy is achieved.
Owner:TSINGHUA UNIV
Self-charging wireless mouse
InactiveCN105487691AAchieve self-supplyNo external power supply requiredBatteries circuit arrangementsElectric powerElectricityElectrical battery
The invention discloses a self-charging wireless mouse. The self-charging wireless mouse comprises a casing, a mouse wheel and a mouse circuit board and is characterized in that a charging device is arranged in the casing and comprises a charging circuit board, a transmission mechanism, a small permanent magnet generator and a charging battery; the power input part of the transmission mechanism is in transmission connection with the mouse wheel, and the power output part of the transmission mechanism is in transmission connection with a rotor of the small permanent magnet generator; the electricity output part of the small permanent magnet generator is electrically connected with the charging circuit board, the charging circuit board is electrically connected with the charging battery, and the charging battery is electrically connected with the mouse circuit board. The self-charging wireless mouse has the benefits as follows: the self-charging wireless mouse can supply energy by collecting the kinetic energy of a human body and external power supply is not required.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Flow sensing and energy collecting device and method based on vortex street effect
ActiveCN112751503ANot easy to influenceLow costVolume/mass flow by dynamic fluid flow effectFriction generatorsThermal engineeringThermodynamics
The invention discloses a vortex street effect-based flow sensing and energy collecting device and method, and the method comprises the steps that: a solid friction medium periodically contacts and is separated from a first electrode layer and a second electrode layer at the two sides of a substrate in sequence under the action of a vortex street effect when a fluid to be measured flows through a generating body, under the coupling effect of the triboelectrification effect and electrostatic induction, a friction electric signal equal to the vortex street frequency is generated between the first electrode layer and the second electrode layer, and the flow of the fluid to be measured can be obtained by measuring the frequency of the electric signal. The flow sensing and energy collecting device based on the vortex street effect and the method thereof solve the problem that a traditional vortex street flowmeter is prone to being interfered by environmental mechanical vibration, and have the advantages of being low in cost, not prone to being affected by the environment, free of external power source for energy supply and the like. The device and the method have important application prospects in the fields of thermal engineering, energy transportation, environment monitoring, medical detection and the like.
Owner:XI AN JIAOTONG UNIV
An island energy system and its working method
ActiveCN107579535BRenewable Comprehensive UtilizationRealize comprehensive utilizationElectrical storage systemEnergy storageThermal energyEngineering
The invention relates to the field of energy storage and utilization and discloses an islet energy system and a working method thereof. The islet energy system comprises a bidirectional energy storageinverter, a photovoltaic subsystem, an optical thermal subsystem, an absorption refrigeration subsystem and an energy storage subsystem, wherein the photovoltaic subsystem is powered on at day time to generate power through solar energy; power is output from the photovoltaic subsystem; direct current is converted into alternative current to be supplied to users through the bidirectional energy storage inverter; extra current is stored in the energy storage subsystem; the optical thermal subsystem is used for generating and storing thermal energy from solar energy; the absorption refrigerationsubsystem is used for generating cold energy from electric energy and thermal energy; the energy storage subsystem is powered on at night; power is output from the energy storage subsystem and is rectified by the bidirectional energy storage inverter to be supplied to users; the absorption refrigeration subsystem is driven through electric energy and thermal energy, and cold energy is generated.By using an energy storage technique and a bidirectional energy storage inversion technique, power supply, heat supply and cold supply to an islet are achieved under the condition that no large powergrid support is available, external power supply is not needed, and comprehensive utilization of renewable energy is achieved.
Owner:TSINGHUA UNIV
Magnetic crane
InactiveCN104444753AHigh remanence inductionHigh energy productMagnetic materialsLoad-engaging elementsForce linesRare earth
The invention discloses a magnetic crane, which comprises a body, a handle and a control handle, wherein the handle is positioned on the upper end of the body, the control handle is positioned on one side of the body, the control handle is connected with a permanent magnet in the body through a rotating shaft, the permanent magnet is made from a high-performance rare earth permanent magnet material, and the high-performance rare earth permanent magnet material is a neodymium-iron-boron permanent magnet material which comprises the following main components in percentage by mass: 30-35% of neodymium, 20-25% of boron, 25-30% of iron, 8-10% of copper, 5-8% of aluminum and 2-6% of cobalt. Through the mode, the high-performance permanent magnet material is adopted, a magnetic force line is changed by overturning the handle, so that the magnetic crane is in working or closing state, external power supply is not required, and the magnetic crane is safe and energy-saving.
Owner:江苏西窗幕墙装饰工程有限公司
Fireless field food heating system based on solar catalytic oxidation
ActiveCN112880214AImprove heating efficiencyFast heatingPhotovoltaic supportsBatteries circuit arrangementsCatalytic oxidationEngineering
The invention discloses a fireless field food heating system based on solar catalytic oxidation, and relates to the technical field of solar application. The fireless field food heating system comprises a pot body, a methanol-air spray tank, a heat exchanger and a photovoltaic module; the pot body comprises a heating cavity used for containing food, an annular flue arranged on the outer side of the heating cavity, a catalysis chamber and a spraying chamber, the catalysis chamber and the spraying chamber are arranged between the heating cavity and the annular flue, an opening of the heating cavity faces upwards, the spraying chamber is located above the catalysis chamber, and a fan is arranged in the spraying chamber; the methanol-air spray tank is arranged on the outer side of the heating cavity, and an outlet of the methanol-air spray tank sequentially communicate with the spraying chamber, the catalysis chamber and the annular flue; the heat exchanger is arranged below the heating cavity and on the side far away from the methanol-air spray tank; the photovoltaic module is arranged on the outer side of the annular flue, the photovoltaic module can store electric energy and assist the heat exchanger in heating food, and the photovoltaic module can further provide the electric energy for the fan. The performance of the field food heating system is improved.
Owner:CHANGZHOU UNIV
Full-duplex destination scrambled untrusted energy harvesting relay transmission method and system
ActiveCN111132263BAchieve self-supplyNo external power supply requiredWireless communicationTrunkingReal-time computing
An untrusted energy collection relay transmission method and system under full-duplex destination scrambling, divides a time block T into two identical time slots, and in the first time slot T / 2, the source end S sends information To the untrusted relay R and the destination terminal D, the destination terminal D sends an interference signal to the untrusted relay R while receiving the information, and the untrusted relay R uses the power distribution-based energy collection protocol to collect energy and information Receiving; in the second time slot T / 2, the source end and the untrusted relay send information to the destination end D, and the destination end D uses the maximum ratio combining technology to combine the signals sent by the source end and the untrusted relay. The invention makes full use of the advantages of full duplex, energy collection, antenna selection and maximum ratio combining technology, and can significantly improve the system throughput and capacity.
Owner:HUAQIAO UNIVERSITY
Design method and circuit of a serial port multi-stage charging and discharging power supply
ActiveCN110134626BRealize the intention of the inventionImprove performanceElectric digital data processingHemt circuitsElectrical polarity
Owner:深圳艾迪宝智能系统有限公司
Sewage treatment equipment
PendingCN109650651ASave energyNo external power supply requiredWater contaminantsMultistage water/sewage treatmentWater wheelEngineering
The invention provides sewage treatment equipment, which comprises a first settling tank, a second settling tank, a reaction chamber assembly, a water wheel mechanism, a transmission mechanism and a stirring mechanism. The first settling tank is positioned at a preset height above the second settling tank and is communicated with the second settling tank. The water wheel mechanism is arranged inside the second settling tank. The stirring mechanism comprises a stirring part and a driving part. The driving part is arranged at the top of the reaction chamber assembly. The stirring part and the driving part are connected and positioned inside the reaction chamber assembly. The water wheel mechanism is in transmission connection with the driving part through the transmission mechanism to drivethe driving part to rotate.
Owner:FOSHAN YUHUANG ECOLOGICAL ENVIRONMENT TECH
Self-powered airflow sensor and production method thereof
ActiveCN111969112ANo external power supply requiredHigh sensitivityTelevision system detailsPiezoelectric/electrostriction/magnetostriction machinesScreen printingEngineering physics
The invention provides a self-powered airflow sensor based on a photovoltaic device structure and a production method thereof, belongs to the technical field of airflow sensors, and can be used for airflow velocity detection in the fields of industry, agriculture, meteorology and the like. The airflow sensor structure based on a photovoltaic device comprises a transparent electrode, a hole transport material, a light absorption material, an electron transport material and a loose porous back electrode material. The production method comprises the steps that the hole transport material, the light absorption material and the electron transport material are prepared through evaporation, atomic layer deposition or a spin-coating method, and the loose porous back electrode is prepared through asilk-screen printing method. The airflow sensor based on the photovoltaic device structure provided in the invention is self-powered, high in sensitivity, capable of being processed by a solution method, miniaturized and the like.
Owner:PEKING UNIV SHENZHEN GRADUATE SCHOOL
Density sensing device and method based on friction nanometer generator
ActiveCN112994508ASimple structureLow costMaterial analysis by observing immersed bodiesFriction generatorsPhysicsFloating platform
The invention discloses a density sensing device and method based on a friction nanometer generator. The density of a liquid to be measured is reflected according to the volume of an upper floater and a lower floater immersed in the liquid to be measured after the upper floater and the lower floater reach a static state. The upper floater moves relative to a floating platform which always floats on the liquid level of the liquid to be measured under the action of gravity, buoyancy and viscous resistance, and due to the coupling action of the triboelectrification effect and electrostatic induction, a solid friction medium connected with the upper floater and a second electrode layer connected with the floating platform generate a friction electric signal due to relative displacement, and calculation is performed to obtain a measured value of the density of the liquid to be measured. The device has the advantages of being simple in structure, low in cost, safe, environmentally friendly, free of external power supply for energy supply and the like, and has important application prospects in the fields of aquaculture, energy transportation, food detection, medical care, environment monitoring and the like.
Owner:XI AN JIAOTONG UNIV
Self-locking human body electrostatic discharge alarm of sidewalk gate
PendingCN110670510AAchieve resilienceAchieve lockingElectrotherapyTraffic restrictionsHuman bodyMechanics
A self-locking human body electrostatic discharge alarm of a sidewalk gate comprises an electrostatic conduction ball assembly, a connector, a top cover, a handrail, an inner pipe, a base and a lengthening bar. A pressing rotating device is arranged between the inner pipe and the base. By means of the pressing rotating device, it is guaranteed that when personnel press down the electrostatic conduction ball assembly, the personnel can push the handrail and the lengthening bar to rotate; and when the electrostatic conduction ball assembly is not pressed down, the handrail and the lengthening bar are locked. In the base, an elastic return device is arranged between the inner pipe and the top cover. By means of the elastic return device, after personnel pass, the inner pipe, the handrail andthe lengthening bar are driven to reset. The whole function is automatically achieved completely through a mechanical structure. The self-locking human body electrostatic discharge alarm can be arranged at an entrance of an explosion area of oil gas and the like, it can be ensured that human body static electricity of entering personnel can be eliminated 100%, and accident potentials of electrostatic ignition are eliminated.
Owner:QINGDAO ALPTEC SAFETY EQUIP
Heat dissipation device capable of indicating food temperature
InactiveCN108491002ARapid coolingEasy to identifyTemperatue controlGenerators/motorsComputer moduleEngineering
The invention discloses a heat dissipation device capable of indicating a food temperature. The device uses a temperature difference power generation technology to realize high-temperature food wasteheat recovery and power generation so as to provide power for the heat dissipation fan and the signal lamp control module of the device. After the heat dissipation fan works, high temperature food cooling is accelerated so as to realize thermal heat dissipation. Simultaneously, the device uses a red light signal lamp, a yellow light signal lamp and a green light signal lamp to represent the food temperatures and can prompt people whether the food temperature reaches edibility at any time, and lamplight with the three colors of red, yellow and green is easy to identify. The structure is simple,and external power supply is not needed.
Owner:四川博领教育科技有限公司
Self-locking electrostatic discharge alarm instrument for human body
The invention relates to a self-locking electrostatic discharge alarm instrument for human body. The alarm instrument comprises an electrostatic conducting ball assembly, a first pipe fitting, a shellbody, a second pipe fitting, a bending tube, a linear bearing and a self-locking assembly, and the self-locking assembly comprises a tension spring mounting bracket, a bearing mounting bracket, a V-shaped marble, a deep-groove ball bearing and a tension spring. At ordinary times, the bending tube is locked and can not be accessed by a personnel, the personnel presses the electrostatic conductingball assembly with a stroke of 27 mm, the bending tube is unlocked, and the personnel can push the bending tube to enter. After the personnel enters, the bending tube automatically rebounds back and is locked; the bending tube can only be pushed away after the electrostatic conducting ball assembly is pressed again to unlock the bending tube; and rebounding and locking of the bending tube can be achieved automatically, the alarm instrument functionally completely meets the safety requirements that the personnel can only pass through after discharging static electricity, and can be installed atentrances of explosive areas such as oil and gas, that the entering personnel can eliminate 100% of static electricity of the human body can be ensured, and the hidden danger of accidents caused by static electricity ignition is eliminated.
Owner:QINGDAO ALPTEC SAFETY EQUIP
A Fireless Field Food Heating System Based on Solar Catalytic Oxidation
ActiveCN112880214BImprove heating efficiencyFast heatingPhotovoltaic supportsBatteries circuit arrangementsCatalytic oxidationEngineering
The application discloses a fireless outdoor food heating system based on solar catalytic oxidation, which relates to the technical field of solar energy application. The heating system includes a pot body, a methanol-air spray tank, a heat exchanger and a photovoltaic module; the pot body includes a heating chamber for placing food, an annular flue arranged outside the heating chamber, and an Between the catalytic chamber and the spray chamber, the opening of the heating chamber is upward, and the spray chamber is located above the catalytic chamber; a fan is arranged in the spray chamber; the methanol-air spray tank is arranged on the outside of the heating chamber, and the outlets of the methanol-air spray tank are sequentially The spray chamber, the catalytic chamber and the annular flue are connected; the heat exchanger is arranged under the heating chamber and on the side away from the methanol-air spray tank, and the photovoltaic module is arranged outside the annular flue. The photovoltaic module can store electric energy and assist the heat exchanger To heat food, photovoltaic modules can also provide electricity for fans. This application is used to improve the performance of outdoor food heating systems.
Owner:CHANGZHOU UNIV
Protective sleeve and use method thereof
InactiveCN105472064ANo external power supply requiredRealize wireless input functionTelephone set constructionsComputer moduleEngineering
The invention provides a protective sleeve comprising a folding protective plate and an accommodating part which is arranged on the protective plate and used for accommodating electronic equipment. The protective sleeve also comprises a solar panel which is arranged on the protective sleeve and a keyboard which has a touch control input function, and a wireless module which is connected on the protective plate. The wireless module is used for realizing wireless connection of the keyboard and the electronic equipment. The keyboard is used for wireless input of the electronic equipment. The invention also provides a use method of the protective sleeve. According to the protective sleeve and the use method thereof, the electronic equipment is protected and the wireless input function of the electronic equipment can be realized.
Owner:HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
Anti-electricity larceny remote online monitoring system
InactiveCN108957077AImprove anti-interference abilityNo external power supply requiredTransmission systemsTime integral measurementGratingCurrent sensor
The invention belongs to the anti-electricity anti-stealing technological field and discloses an anti-electricity larceny remote online monitoring system. The system comprises a fiber grating currentsensor, a fiber grating wavelength demodulation module, a smart electric meter, a fiber grating magnetic field sensor, a power source module, a main control module, a wireless communication module anda main station; the fiber grating wavelength demodulation module and the smart electric meter are both connected with the main control module; the fiber grating current sensor and the fiber grating magnetic field sensor are both connected with the fiber grating wavelength demodulation module through a single-mode fiber; the wireless communication module is applied to wireless communication between the main control module and the main station; and the power source module is used for system power supply. The anti-electricity larceny remote online monitoring system provided by the invention hasthe advantages of small size, strong anti-interference capacity and remote online monitoring.
Owner:KUNMING UNIV OF SCI & TECH
Intelligent solar insecticidal lamp
PendingCN112970697AEntrapment achievedImprove capture usabilityMeasurement devicesTransmission systemsAgricultural engineeringEnergy supply
The invention relates to the technical field of insecticidal lamps, and provides an intelligent solar insecticidal lamp. The intelligent solar insecticidal lamp comprises a trapping mechanism, an energy supply mechanism and an intelligent control mechanism; the energy supply mechanism comprises a trapping cage, a trap lamp and an insect-catching color plate, the trap lamp is arranged on the inner top side of the trapping cage, and the insect-catching color plate is detachably arranged in the trapping cage; the energy supply mechanism comprises a solar cell panel and a storage battery, the solar cell panel is arranged on the outer top side of the trapping cage and connected with the storage battery, and the storage battery is connected with the trap lamp; the intelligent control mechanism comprises a control module, a communication module and a mobile control terminal, the control module is connected with the trap lamp and the communication module and used for collecting and transmitting the operation state of the trap lamp, and the mobile control terminal is connected with the communication module and used for sending an instruction for changing operation parameters of the trap lamp to the control module. Working modes are increased, meanwhile, insect catching efficiency is improved, external power supply is not needed, operation is easy, flexibility and portability are achieved, cost is low, and the intelligent solar insecticidal lamp can adapt to various different agricultural production scenes.
Owner:北京德曼特尔生物科技有限公司
Full-duplex energy harvesting relay transmission method based on self-interference minimization criterion
ActiveCN110278019BReduce overheadImprove efficiencySpatial transmit diversityRelay systems monitoringTrunkingControl theory
The invention discloses a full-duplex energy collection relay transmission method based on the self-interference minimization criterion, comprising: acquiring information received by a destination terminal and a corresponding first signal-to-noise ratio; selecting a receiving antenna and a transmitting antenna of the relay; Obtain the signal received by the relay in the first time slot αT; obtain the signal received by the relay when the source information is transmitted through the relay in the second time slot (1‑α)T; obtain the signal received by the relay in the second time slot (1‑α)T In the slot (1‑α)T, when the source information is transmitted through the relay, the information received by the destination and the corresponding second signal-to-noise ratio; the destination adopts the maximum ratio combining technology to combine the information from the relay and the source, The receiving signal-to-noise ratio of the destination is obtained by summing the first signal-to-noise ratio and the second signal-to-noise ratio; and the instantaneous safety capacity and system throughput of the system are obtained based on the receiving signal-to-noise ratio of the destination. The simultaneous and same-frequency full-duplex technology of the present invention can nearly double the use efficiency of wireless resources, thereby significantly improving system throughput and capacity.
Owner:HUAQIAO UNIVERSITY
A serial communication module
ActiveCN110071816BRealize the intention of the inventionImprove performanceData switching current supplyCurrent limitingElectrical polarity
The signal communication module based on serial communication interface communication and self-power supply is composed of a plug, a power-taking circuit, a hierarchical power supply circuit, an MCU circuit, a communication circuit and a housing. The power-taking circuit includes a limiting input cable, a polarity conversion circuit, a voltage-stabilizing output circuit and an input protection circuit. The power-taking circuit obtains power from the electrical signal used for communication on the communication signal line (such as TxD) of the serial port, without affecting the serial port. In the case of communication, through current limiting, voltage limiting, frequency limiting and related processing, signal communication and self-power collection are completed. The serial port communication module also includes sniffing logic, which can automatically identify the brand and model of the container when the input terminal is connected to the refrigerated container, and pass the information through the communication circuit to complete the communication with the external logic. This module is used in container ships, land container transport vehicles, container terminals, and container yards as the core equipment for remote monitoring and control of containers.
Owner:深圳艾迪宝智能系统有限公司
Design method and circuit of serial port multi-stage charging and discharging power supply
ActiveCN110134626ARealize the intention of the inventionImprove performanceElectric digital data processingCommunication qualityElectrical current
The invention relates to a design method and circuit for a serial port multi-stage charging and discharging power supply, and the method and circuit obtain a power supply for instantaneous large-current power supply through the design of taking power from a micro-current signal source of a serial port to charge a special multistage charging and discharging circuit, and solve a self-power-supply problem based on the serial port on the premise that the signal communication quality is not influenced. The micro-signal source comprises a TxD terminal which supports a three-wire system and takes power from an RS232 port. A charging power supply is obtained through bidirectional rectification filtering and charge pump reverse polarity; the first-stage power supply is a primary power supply, the second-stage power supply is a backup power supply; a backup power supply is used as a main power supply support; under the condition that the power taking current does not exceed 5mA, the method and the circuit meet the extreme power supply requirements under the following conditions: the Bluetooth equipment is supported to perform + 8dB radio emission, the instantaneous current is 20mA, the communication distance reaches 300m, the data is sent once every four seconds, and the data length is supported to be 255 bytes. In addition, as an option, a long-service-life battery micro-current is adopted for power supply, and display and connector assembly effectiveness monitoring which can be as long as 9.5 years in a storage state can be provided.
Owner:深圳艾迪宝智能系统有限公司
A Supercooling Temperature Monitoring Method Based on Shape Memory Alloy
InactiveCN106370320BImprove stabilityEasy to useCryogenic temperature measurementThermometers using physical/chemical changesSuper coolingShape-memory alloy
The invention discloses a super-cooled temperature monitoring method based on a shape memory alloy. The method comprises the following steps: 1) taking a shape memory alloy, of which the weight is 10-20 mg and which is in arbitrary shape, as a super-cooled temperature monitoring material; 2) attaching the super-cooled temperature monitoring material directly onto the surface of a monitored product or an internal or external fit position of a package box and then, carrying out super-cooled temperature monitoring; 3) after the monitoring is finished, carrying out analysis on the super-cooled temperature monitoring material through a thermal analysis instrument, and comparing the monitoring result with an original measurement result to obtain information about whether the monitored product is lower than the minimum temperature in the monitoring process and specific temperature exceeding information; and 4) carrying out heating processing on the super-cooled temperature monitoring material until reaching a temperature higher than the austenite transformation finish temperature, so that recycle use of the super-cooled temperature monitoring material can be realized. The super-cooled temperature monitoring method does not need external power supply and can keep history temperature information for a long time.
Owner:SHENYANG JIANZHU UNIVERSITY
Multi-touch piezoelectric alarm circuit
A multi-touch piezoelectric warning circuit comprises an energy storage circuit and an alarm circuit. The multi-touch piezoelectric warning circuit adopts three triggering modes, the first mode is that a produced current fluctuation signal is transferred to a 555 timer chip to give an alarm when a piezoelectric sensor produces vibration, the second mode is that the produced fluctuation signal is transferred to a 555 timer chip to give an alarm when an electrode plate produces vibration, the third mode is that a TR interface of the 555 timer chip is connected with a grounding wire to produce low level and give an alarm when a vibration sensor produces vibration. Energy used by the multi-touch piezoelectric warning circuit is produced through the piezoelectric sensor and stored for utilization, and the piezoelectric sensor is a multi-layer composite plate or a beam structure and comprises a piezoelectric layer and a metal base layer. The multi-touch piezoelectric warning circuit is high in sensitivity and reliability, uses self-generated electricity energy and does not need battery replacement or external charging and other operations.
Owner:BEIJING UNIV OF TECH
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