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41results about How to "Increase the supply voltage" patented technology
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Method for adjusting power supply voltage of radio frequency power amplifier and radio frequency circuit
ActiveCN107070486AReal-time adjustment of supply voltageIncrease the supply voltageHigh frequency amplifiersPower amplifiersTransceiverTransmitted power
The invention relates to the field of mobile communication and particularly relates to a method for adjusting a power supply voltage of a radio frequency power amplifier and a radio frequency circuit and is used for solving the problem that in the prior art, the power supply voltage of the radio frequency power amplifier cannot be flexibly adjusted. According to the embodiment of the invention, power output to an antenna by a radio frequency front end is coupled based on a coupling coefficient and then is fed back to a radio frequency transceiver. Transmitting power on a target channel and power on an adjacent channel of the target channel are calculated according to the feedback coupled power. The power supply voltage of the radio frequency power amplifier is adjusted according to a difference value between the transmitting power and the power on the adjacent channel of the target channel. According to the embodiment of the invention, the power supply voltage of the radio frequency power amplifier can be adjusted flexibly in real time according to the difference value between the transmitting power and the power on the adjacent channel of the target channel, so the power consumption when the radio frequency power amplifier works can be effectively reduced, and the standby and endurance duration of a mobile terminal can be prolonged.
Owner:QINGDAO HISENSE MOBILE COMM TECH CO LTD
Household magnesium air battery system
ActiveCN103531865AIncrease power supplyIncrease the supply voltageFuel and primary cellsFuel cellsEngineeringCirculating pump
The invention discloses a household magnesium air battery system including a magnesium air battery pack, an electrolyte regeneration tank and an electrolyte circulation pump. A conical funnel is arranged at the bottom of the magnesium air battery pack, and the bottom of each of anode plates of the magnesium air battery pack is provided with an opening communicated with the conical funnel; the conical funnel is communicated with the upper part of the electrolyte regeneration tank through a pipeline, the middle part of the electrolyte regeneration tank is provided with a filter plate, and the bottom of the electrolyte regeneration tank is communicated with the magnesium air battery pack through the electrolyte circulating pump. The household magnesium air battery system is provided with the electrolyte regeneration tank, so that an electrolyte can be regenerated for utilization, and simultaneously generated hydroxides can also be conveniently recycled, the waste discharge during a battery using process is reduced, and the battery using cost is reduced; and at the same time, electrolyte replacement adopts the pump to convey, and thus the battery maintenance is greatly facilitated.
Owner:北京恒泰岩磊科技有限公司
Equal-zero-sequence-current phase-change switch type three-phase load automatic adjustment method and device
InactiveCN108695866AReduce lossIncrease the total load capacityPolyphase network asymmetry elimination/reductionPolyphase network asymmetry reductionDistribution transformerLow voltage
The invention relates to an equal-zero-sequence-current phase-change switch type three-phase load automatic adjustment method and device, and relates to the technical field of power systems. The method comprises the steps: collecting a three-phase voltage value and a three-phase current value of a low-voltage outlet side circuit of a distribution transformer; determining the unbalance degree of athree-phase load, searching a to-be-switched equal-zero-sequence-current low-voltage load automatic phase-change switch and carrying out the pre-judgment of the unbalance degree of the three-phase load after load transfer. The method is suitable for a low-voltage side of the distribution transformer in a transformer region and is mainly used for the real-time and automatic distribution and adjustment (balancing) of the total load among three phases, and enabling the total load to be basically in a balance state, wherein the dynamic balance degree reaches the optimal value, and the current passing through a zero line is the minimum, thereby greatly reducing the loss of the transformer and the line loss of a low-voltage power supply line and improving the total load capacity of the transformer. Meanwhile, the method also can increase the supply voltage of the tail end of the low-voltage line (partly solving a low-voltage problem of the tail end), and greatly improves the power utilization quality.
Owner:珠海英泰利电力技术有限公司
Power amplifier consumption reducing device and method and mobile terminal
InactiveCN103580616AIncrease the supply voltageReduce power consumptionAmplifier modifications to reduce temperature/voltage variationAmplifier modifications to raise efficiencyVoltage converterAudio power amplifier
The present invention applies to the field of energy saving, and in particular, to an apparatus, a method, and a mobile terminal for reducing power consumption on a power amplifier. In embodiments of the present invention, a controller is separately connected to a temperature detector and a voltage converter. The controller searches for, according to a temperature of the power amplifier detected by the temperature detector, a voltage compensation value corresponding to the temperature, and controls, according to the voltage compensation value, the voltage converter to output a power voltage that is capable of improving efficiency of the power amplifier. This may enable the power amplifier to work in an optimal efficiency at any temperature, and greatly reduce the power consumption of the power amplifier.
Owner:HUAWEI DEVICE CO LTD
Circuit for eliminating excessive voltage and current during starting power-on of signal functional module
ActiveCN107040738ALifting materialIncrease costTelevision system detailsElectronic switchingElectricityDriver circuit
The invention discloses a circuit for eliminating excessive voltage and current during starting power-on of a signal functional module. The circuit is characterized by comprising a main chip, a switching signal control circuit and a power supply switch drive circuit, which are electrically connected in sequence. The circuit realizes gradual improvement of power supply voltage and current for a functional module of a liquid crystal television or a display, solves the problem of excessive voltage and current caused by instantaneous power-on of the functional module, and fulfills the purpose of avoiding abnormal work of the module or device damage caused by power-on starting.
Owner:SICHUAN CHANGHONG ELECTRIC CO LTD
Reinforcement configuration memory array applicable to FPGA for space navigation and configuration method of reinforcement configuration memory array
ActiveCN105741872ASmall area consumptionAchieve radiation resistance hardeningRead-only memoriesElectricityComputer architecture
The invention relates to a reinforcement configuration memory array applicable to an FPGA (Field Programmable Gate Array) for space navigation and a configuration method of the reinforcement configuration memory array, wherein the configuration memory array uses DICEs (Double Interlocked Storage Cells) for realizing single particle reinforcement of the configuration memory array; and the influence of single particles on the configuration memory array is reduced. The configuration method is characterized in that before the configuration memory array is electrified, all configuration memory units are in a 0-write state through a column address decoding circuit and a frame data register; and during electrification, all initial states of all DICEs after the electrification are 0 due to the inductive effect of external work conditions. The logic conflict of an FPGA interconnection matrix after the electrification due to the non-determined state of the configuration memory units is avoided, so that the problem of electrification surge current of the FPGA is effectively solved; the design difficulty of a system using the FPGA is reduced; and the work reliability of the FPGA for space navigation is improved.
Owner:BEIJING MXTRONICS CORP +1
Electro-magnetic induction internal thermal type metallic magnesium vacuum reduction furnace
InactiveCN105018730AImprove structural strengthNot easy to damageIncreasing energy efficiencyElectric heating for furnacesLithiumStrontium
The invention relates to the technical field of vacuum metallurgical equipment, in particular to an electro-magnetic induction internal thermal type metallic magnesium vacuum reduction furnace which comprises a furnace body. A material basket (8) is arranged in the furnace body, and a central channel penetrating through the bottom face of the material basket (8) is formed in the center of the material basket (8). One or more heating cylinders (7) are concentrically arranged in the material basket (8). The material basket (8) and the heating cylinders (7) are filled with furnace burdens (9). A rectangular iron core is arranged in the furnace body. One long edge of the rectangular iron core penetrates through the central channel of the material basket (8), and a primary side coil (12) is wound around the other long edge of the rectangular iron core. The leading-out end of a copper winding of the primary side coil (12) is led out of the furnace through an insulated sealing device on the furnace body and is connected with a power source device. The electro-magnetic induction internal thermal type metallic magnesium vacuum reduction furnace is reasonable in design, distribution of a temperature field of the reduction furnace can be regulated, and heat transfer efficiency is high; the vacuum reduction furnace is used for high-vapor-pressure metallothermics production of magnesium, lithium, strontium, calcium and the like.
Owner:SHANXI UNIV
Fabrication method of P-type crystal-silicon solar cell with passivation back surface
InactiveCN108336169AImprove photoelectric conversion efficiencyIncrease the supply voltageFinal product manufacturePhotovoltaic energy generationSilicon solar cellConcentration gradient
The invention discloses a fabrication method of a P-type crystal-silicon solar cell with a passivation back surface. Planarization recovery processing is performed on a bottom surface and a side wallof a laser groove in a back surface of a silicon wafer by a chemical etching method with regard to the silicon wafer after being grooved by laser, a diffusion layer on a front surface of the silicon wafer is simultaneously etched, the concentration gradient of doping phosphate atoms in the diffusion layer is optimized, an emitter is optimized, and a SiO2 thin film and a second silicon nitride anti-reflection film are deposited on the front surface of the silicon wafer. According to the fabrication method, the open-circuit voltage and the photovoltaic conversion efficiency of a solar cell pieceare improved by recovering a damage layer.
Owner:南通苏民新能源科技有限公司
Implementation method for electric dust removal of high-frequency high-voltage SIR power supply
InactiveCN106179756AIncrease supply voltage and currentLow concentration of dust emissionElectric supply techniquesCurrent limitingThree-phase
The invention relates to an implementation method for electric dust removal of a high-frequency high-voltage SIR power supply. The implementation method comprises the following steps of: inputting a three-phase 380V 50-60HZ alternating-current power supply, and performing three-phase controllable rectifying and wave-filtering to form about 520V direct-current voltage; carrying out high-frequency inversion on the 520V direct-current voltage by virtue of an IGBT module, and inputting the 520V direct-current voltage subjected to the high-frequency inversion into a high-frequency rectifying transformer; boosting inversion waveforms to be about 70 kv by virtue of a high-frequency transformer, and rectifying by virtue of a high-frequency rectifying bridge to obtain voltage waveforms, and supplying the voltage waveforms to a polar plate of an electric dust collector through a current-limiting resistor R0; outputting current and voltage, and feeding back the output current and voltage to a DSP controller to change pulse working efficiency or pulse width, and feeding the changed pulse working efficiency or the pulse width to an IGBT full-bridge high-frequency inverter through an isolating driver to regulate output current and voltage; and realizing output open circuit protection, short circuit protection, overheat protection on transformer oil and an IGBT, output flashover control and processing, and the like by virtue of the DSP controller of a digital signal processor.
Owner:JIANGSU YITONG ENVIRONMENTAL PROTECTION ENG TECH
Vacuum reduction furnace for electromagnetic induction heating melting reduction of magnesium metal
InactiveCN105018740ALow costLow operating and maintenance costsIncreasing energy efficiencyMolten stateConductor Coil
The invention relates to the technical field of vacuum metallurgy equipment, in particular to a vacuum reduction furnace for electromagnetic induction heating melting reduction of magnesium metal. The vacuum reduction furnace comprises a furnace body (1), a hopper (4) made of a hard insulating material is arranged in the furnace body (1), and a center channel penetrating the bottom face of the hopper (4) is arranged in the center position of the hopper (4); one or more annular grooves (7) are concentrically arranged in the bottom face of the hopper (4), and iron in the solid state or the molten state is arranged in the grooves (7); a rectangular iron core (6) is arranged in the furnace body (1), one side of the rectangular iron core (6) penetrates the center channel of the hopper (4), and the other side of the rectangular iron core (6) is wound with a primary side coil (9); and the leading-out end of a copper winding of the primary side coil (9) is led out of the furnace through an insulation sealing device on the furnace body (1) so as to be connected with a power device. The vacuum reduction furnace is reasonable in design, distribution of a temperature field of the reduction furnace can be adjusted, and the heat transferring efficiency is high; and the vacuum reduction furnace is used for thermal reduction production of high-vapor-pressure metal such as magnesium, lithium, strontium and calcium and the like.
Owner:SHANXI UNIV
Immerged electrolysis ozone generator
ActiveCN108486601AIncrease the supply voltageExtended service lifeElectrolysis componentsOzone generatorElectrolysis
The invention discloses an immerged electrolysis ozone generator. A cathode structure of the immerged electrolysis ozone generator comprises a lower reinforced titanium plate (10), a cathode frame (1)with a cathode water and gas guiding hole (1-1), a cathode current conducting plate (12) with a water and gas guiding hole (12-2), a cathode current-conducting double-screw bolt (12-1), a cathode micropore titanium plate (7), a cathode catalyst layer (8), a proton exchange membrane (6) and an O-shaped sealing ring (11). An anode structure of the immerged electrolysis ozone generator comprises anupper reinforced titanium plate (9) with an anode water and gas guiding hole (9-1), an anode frame (2), an anode micropore titanium plate (4) and an anode catalyst layer (5). The lower reinforced titanium plate (10), the cathode frame (1), the cathode current conducting plate (12), the O-shaped sealing ring (11), the cathode micropore titanium plate (7), the cathode catalyst layer (8), the protonexchange membrane (6), the anode catalyst layer (5), the anode micropore titanium plate (4), the anode frame (2) and the upper reinforced titanium plate (9) are fastened together. The immerged electrolysis ozone generator is simple and practical in structure, is convenient to install and replace by a user and realizes the slow rising and slow dropping of power supply. The service life of the generator is prolonged.
Owner:BIOTEK ENVIRONMENTAL SCI
Insulation fault location systems and methods for insulation fault location for a redundant DC power supply system coupled to diodes
ActiveCN108693449AReduced dynamic range requirementsReduce usageTesting dielectric strengthFault location by conductor typesPower flowCoupling
The invention relates to insulation fault location systems and methods for insulation fault location for an ungrounded DC power supply system, which is redundantly fed from a first direct voltage supply source coupled to diodes and a second direct voltage supply source coupled to diodes and to which a consumer is redundantly coupled. Due to the diode coupling and the asymmetric current splitting of the load current associated therewith, non-compensational partial currents arise in the supply lines in such a power supply system and consequently differential current portions, which can be captured by measuring current transformers and which can interfere with a valid test current during an insulation fault location. In order to eliminate the interfering differential current portions, compensating measures on the primary side are proposed in the measuring current transformers and indirect compensating measures on the secondary side are proposed in an insulation fault location apparatus.
Owner:BENDER SA
Lithium battery charging method and device
PendingCN112290646AReduce supply voltageIncrease the supply voltageBatteries circuit arrangementsElectric powerCharge controlCurrent threshold
The invention relates to a lithium battery charging method and device. The charging process comprises a first charging control state and a second charging control state. The lithium battery charging method comprises the steps of: after entering a first charging control state, reducing a power supply voltage output by a power supply end and keeping the charging of a lithium battery BT1 by the charging end until a voltage difference between the power supply voltage output by the power supply end and the lithium battery BT1 is smaller than a preset voltage threshold VTH, stopping charging the lithium battery BT1 by the charging end and entering a second charging control state; and after entering the second charging control state, when an acquired load current is smaller than a load current threshold ITH, boosting the power supply voltage output by the power supply end, and recovering a charging state of the lithium battery BT1 by the charging end until the acquired load current during charging is greater than the load current threshold ITH or the power supply voltage output by the power supply end is in a rated voltage state. The lithium battery charging method and the device can effectively improve the charging efficiency of the lithium battery, and are safe and reliable.
Owner:JIANGSU RUNIC TECH CO LTD
Mooring ground working station and mooring unmanned aerial vehicle system
PendingCN107826266AReduce lossIncrease the supply voltageBatteries circuit arrangementsElectric powerAutomotive engineeringElectricity
The invention provides a mooring ground working station and a mooring unmanned aerial vehicle system. The mooring ground working station comprises an electricity supply unit, and the electricity supply unit comprises a city power electricity supply unit body and a battery electricity supply unit body. The city power electricity supply unit body and the battery electricity supply unit body are utilized to output high-voltage direct current which is larger than or equal to 200 V to a mooring unmanned aerial vehicle through a mooring rope. Through redundant low-voltage or high-voltage input of the mooring unmanned aerial vehicle and electricity supplying of the high-voltage direct current, not only is the working current reduced, loss of a circuit is small, a more reliable electricity supplycircuit is provided, and meanwhile, identification and alarming of a corresponding failure circuit can be provided.
Owner:SANGAIR TECH
Server power supply and power supply method
ActiveCN111290558ARealize power supplyIncrease loading capacityVolume/mass flow measurementDc-dc conversionControl engineeringHemt circuits
The invention provides a server power supply and a power supply method, the power supply voltage comprises a voltage conversion module, a controller and a plurality of step-down circuits, the voltageconversion module is connected in series between a PSU power supply and a mainboard, and the output voltage of the PSU power supply is boosted; the main board is connected with a plurality of voltagereduction branches, and voltage reduction circuits are arranged on the real-time voltage reduction branches; the output end of the voltage reduction branch is connected with a load; the input end of the controller is connected with the output end of the main board and the output end of the voltage reduction branch. The output end of the controller is connected with the voltage conversion module and the voltage reduction circuit. According to the invention, the problem of a mainboard through-flow bottleneck can be solved, and the loading capacity of the server is greatly improved; and meanwhile, high voltage is directly converted into electricity required by the load, so that the conversion efficiency can be improved.
Owner:INSPUR SUZHOU INTELLIGENT TECH CO LTD
Random memory and electricity supplying method thereof
ActiveCN101339801AIncrease the supply voltageIncrease charge storage capacityStatic storageEmbedded systemElectricity
The invention provides a random access memory (RAM) and a power supply method thereof. The RAM comprises a voltage generation module which is used for boosting the external supply voltage, and the boosted voltage is provided for a memory array in the RAM. According to the RAM and the power supply method, the stability of the RAM under deep submicron technology and ultra-deep submicron technology can be effectively improved.
Owner:GIGADEVICE SEMICON (BEIJING) INC
A household magnesium-air battery system
ActiveCN103531865BIncrease power supplyIncrease the supply voltageFuel and primary cellsFuel cellsEngineeringCirculating pump
The invention discloses a household magnesium air battery system including a magnesium air battery pack, an electrolyte regeneration tank and an electrolyte circulation pump. A conical funnel is arranged at the bottom of the magnesium air battery pack, and the bottom of each of anode plates of the magnesium air battery pack is provided with an opening communicated with the conical funnel; the conical funnel is communicated with the upper part of the electrolyte regeneration tank through a pipeline, the middle part of the electrolyte regeneration tank is provided with a filter plate, and the bottom of the electrolyte regeneration tank is communicated with the magnesium air battery pack through the electrolyte circulating pump. The household magnesium air battery system is provided with the electrolyte regeneration tank, so that an electrolyte can be regenerated for utilization, and simultaneously generated hydroxides can also be conveniently recycled, the waste discharge during a battery using process is reduced, and the battery using cost is reduced; and at the same time, electrolyte replacement adopts the pump to convey, and thus the battery maintenance is greatly facilitated.
Owner:北京恒泰岩磊科技有限公司
Electromagnetic Induction Heating Melting Reduction Metal Magnesium Vacuum Reduction Furnace
InactiveCN105018740BLow costLow operating and maintenance costsIncreasing energy efficiencyMolten stateLithium
Owner:SHANXI UNIV
Method for optimizing operating parameter of frequency control drive system of direct air cooling blower fan
InactiveCN101509498BReduce downtimeImprove running stabilityPump controlNon-positive displacement fluid enginesFrequency changerTransformer
The invention discloses a method for optimizing operational parameters of a direct air-cooling fan variable frequency speed control drive system so as to solve the problem that when the system runs, a motor insufficiently output and the cooling performance can not meet the design requirements. The system comprises a supply transformer, a breaker, an incoming line alternating current filter, a transducer, an outgoing line alternating current filter, a cable, an electric motor, a reduction gearbox and a fan which are connected with each other. The method has the steps: (1) the input voltage of the transducer is increased to be 1.05-1.15 times of the rated voltage of the motor; (2) when the output frequency of the transducer is set to be 50Hz, the output voltage valve is 1.03-1.1 times of the rated voltage of the electric motor; (3) the output frequency of the transducer is set to be 44Hz-47Hz, which is corresponding to the rated revolution of the fan; (4) the output frequency of the transducer is set to be 48Hz-51Hz, which is corresponding to the maximum revolution of the fan. The method can reduce the working current of the system, increases the working voltage and output torque of the motor, reduces the heat productivity, saves electrical energy and solves the problem of high system failure rate.
Owner:西安兴仪控制系统有限公司
Control method of vehicle brake calipers introduced with energy accumulator
PendingCN114834416ASafe and reliable workGuaranteed working lifeBraking action transmissionBrake control systemsElectric machineryEngineering
The invention provides a control method of a vehicle brake caliper introduced with an energy accumulator, the brake caliper is driven by a motor, and when the motor is in a turn-off state, the motor is started to be turned off, and the control method comprises the following steps: step 1, confirming whether the energy accumulator is in an available state or not; step 2, controlling a relay to switch an energy accumulator into a motor power supply circuit; step 3, switching on a switch tube of a motor control loop, and performing motor control; 4, when the energy accumulator needs to be cut out of the motor power supply circuit, a switching tube in a motor control loop is closed firstly, and then the energy accumulator is cut out; and step 5, when the motor is closed through the switch tube, the positive and negative ends of the motor are short-circuited, so that the motor can be quickly stopped after the power supply is cut off. On the premise of comprehensively considering the cost performance of the actual system, the energy accumulator is ensured to be safely switched in and out of the power supply circuit, the response speed of the motor is improved, and accurate control when the motor stops is ensured.
Owner:WUHU BETHEL AUTOMOTIVE SAFETY SYST
Single-spiral embedded excitation type magnesium vacuum reduction furnace adopting electromagnetic induction inner heating
PendingCN107990713AImprove structural strengthNot easy to damageCharge treatment typeCrucible furnacesCapacitanceInternal heating
The invention relates to a single-spiral embedded excitation type magnesium vacuum reduction furnace adopting electromagnetic induction inner heating. The magnesium vacuum reduction furnace comprisesa furnace body, wherein a plurality of cylindrical baskets are arranged in the furnace body in a honeycomb shape, a single excitation coil is embedded in the wall of each basket body, is introduced from the bottom of the wall of the basket body, rises spirally, and is led out from the top; the excitation coils of the plurality of baskets are connected in series, and then led outside the furnace body by an insulating sealing device on the furnace body to be connected with a power device; electric energy is transmitted to the baskets in a contactless manner to heat reaction furnace charge; the whole heating body is uniformly heated and cannot be damaged by local high temperature. The problems of severe excitation coil loss, high inductance leakage and high cost of required reactive power compensation capacitance of existing electric internal heating type vacuum reduction furnaces are solved. The vacuum reduction furnace is reasonable in design, distribution of the temperature field of the reduction furnace can be adjusted, and heat transfer efficiency is high. The vacuum reduction furnace is mainly used for high vapor pressure production of metals such as magnesium, lithium, strontium, calcium and the like with a thermal reduction method.
Owner:SHANXI UNIV
A rotating shaft angle and speed measuring device
ActiveCN108562326BHigh detection sensitivityEasy to assembleMeasurement devicesElectrical resistance and conductanceMagnetic reluctance
Owner:北京玻迅基业科技有限公司
Non phase separation type traction power supply equipment for railway locomotive
InactiveCN101503065BImprove stabilityGreat tractionPower supply linesSingle network parallel feeding arrangementsCapacitanceContact network
A non-split-phase type traction power supply device used for rail vehicles belongs to technical field of railway electric traction power supply. The device comprises a traction transformator and an energy distribution regulating machine which mainly consists of a main controller, a driver, an electronic power switch bridgearm, a support capacitance arm, three electric current sensors, three voltage transducers and three reactors, wherein, the driver is connected between a control terminal of the electronic power switch bridgearm and the main controller, the electric current sensors and the voltage transducers are respectively connected between the main controller and A phase, B phase and C phase of an output end of the traction transformator, and the reactors are connected between the center of the bridgearm and the A phase, the B phase and the C phase of an output end of the traction transformator. The invention has the advantages that split-phase power supply is changed into non-split-phase power supply, great run-through of the traction contact network can be realized, and power phase position exchange for power supply again caused by frequent power failure can be avoided, so that safe, high speed and high-efficiency running of train can be guaranteed.
Owner:四川省佳灵电气有限公司
Actuator, motor vehicle with such an actuator and method for operating the actuator
ActiveCN104918827BIncrease the supply voltageSupply voltage influenceElectrical controlMagnetsActuatorControl theory
The invention relates to an actuator (1) which is designed to convert electrical signals into mechanical movements, the actuator has a disengagement function for eliminating functional faults, such as jamming, wherein a device is provided for The increased voltage is supplied to the actuator (1) when the disengagement function is activated.
Owner:AUDI AG
Method for managing power supply of passive meter reading system
ActiveCN101540096BReduce power consumptionIncrease the supply voltageElectric signal transmission systemsStopped workSystem stability
The invention relates to a method for managing the power supply of a passive remote meter reading system. The passive remote meter reading system generally consists of meter reading buses, meter reading system devices, passive intelligent instruments and meters, wherein the passive intelligent instruments and the meters are not provided with power supplies and are provided with an only electroniclabel code for identification respectively; each meter reading system device is connected with a plurality of the passive intelligent instruments and the meters; and the method comprises the following steps that: when performing meter reading tasks, the meter reading device supplies power to the passive intelligent instruments and the meters through the meter reading buses and sends information with the electronic label codes to the passive intelligent instruments and the meters simultaneously; after receiving the information, the passive intelligent instruments and the meters process the information and respond corresponding information to the meter reading device; after receiving the response information, the meter reading system device makes confirmation and sends information to notifythe passive intelligent instruments and the meters to enter a working mode with ultra-low power consumption or stop working; and the operations are repeated in turn so that each passive intelligent instrument and each meter in the passive remote meter reading system stops working in turn to achieve the effect of reducing the current consumption of the system and increasing the stability of the system.
Owner:深圳市骏普科技开发有限公司
Random memory and electricity supplying method thereof
ActiveCN100573702CImprove stabilityDoes not increase power consumption too muchStatic storageElectricityRandom access memory
The invention provides a random access memory (RAM) and a power supply method thereof. The RAM comprises a voltage generation module which is used for boosting the external supply voltage, and the boosted voltage is provided for a memory array in the RAM. According to the RAM and the power supply method, the stability of the RAM under deep submicron technology and ultra-deep submicron technology can be effectively improved.
Owner:GIGADEVICE SEMICON (BEIJING) INC
Rotating shaft angle and speed measuring device
ActiveCN108562326AHigh detection sensitivityEasy to assembleMeasurement devicesElectrical resistance and conductanceElectricity
The invention provides a rotating shaft angle and speed measuring device to improve the measuring precision of an existing rotating shaft angle and speed measuring device. The structure of the devicecomprises a permanent magnet, a chip integrated with a magnetoresistive sensor, and a PCB circuit board. A number of chips are arranged on the upper end face of the PCB circuit board. A number of counter bores are arranged in the lower end face of the PCB circuit board. The axis of each counter bore passes through the centroid of a chip. The permanent magnet and the PCB circuit board are firmly connected through the counter bores. The magnetoresistive sensor is provided with a first power supply connection end, a grounding end, a first signal output end and a second signal output end. The first signal output end is connected in series with a first resistor and is electrically connected with a second power supply connection end. The first signal output end is connected in series with a second resistor and is grounded. The second signal output end is connected in series with a third resistor and is electrically connected with the second power supply connection end. The second signal output end is connected in series with a fourth resistor and is grounded. According to the invention, the connection relationship between the permanent magnet and the PCB circuit board is improved, and the detection sensitivity is greatly improved.
Owner:北京玻迅基业科技有限公司
System and method for locating insulation faults in redundant dc power supply systems connected with diodes
ActiveCN108693449BIncrease the supply voltageTesting dielectric strengthFault location by conductor typesPartial currentControl theory
The present invention relates to an insulation fault location system and method for insulation fault location of an ungrounded DC supply system powered from a first direct voltage supply source connected to a diode and a second direct voltage connected to the diode The power supply is fed redundantly and the consumers are redundantly coupled to the ungrounded DC power supply system. Due to the asymmetrical current splitting of the diode connections and the load currents associated with them, non-compensating partial currents are generated in the supply lines in such power supply systems and thus can be captured by measuring current transformers and can be detected during insulation fault location Interfering with the differential current portion of the effective test current. In order to eliminate interfering differential current components, compensation measures are proposed on the primary side in the measuring current transformer and indirect compensation measures on the secondary side in the insulation fault location device.
Owner:BENDER SA
A Method for Acquiring Reference Voltage Curve Based on Full Analog Circuit
ActiveCN105871179BImprove EMC performanceOvercoming the bottleneck of the highest ratePower conversion systemsEngineeringVoltage reference
The invention provides a reference voltage curve acquisition method based on a full analog circuit, by determining the working principle of the reference voltage curve and the full analog circuit for testing; according to the working principle of the reference voltage curve, the reference voltage curve is sequenced in the full analog circuit Control; control the voltage and slope of the reference voltage curve in the full analog circuit; combine timing control, high-power charge and discharge control and voltage interval identification control to obtain the reference voltage curve. The method proposed by the invention is simple and efficient, overcomes the bottleneck problem of the highest rate, improves the EMC performance of the circuit, and cleverly designs an accurate voltage reference curve with the least electronic components.
Owner:GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +1
Last-stage electric field rapping control and system of electric dust removal system
ActiveCN113019705AIncrease the supply voltageImprove adsorption capacityHuman health protectionElectric supply techniquesEngineeringPower supply voltage
The invention provides a last-stage electric field rapping control method and system of an electric dust removal system, and belongs to the technical field of thermal power generating units. The method comprises the steps of in response to a rapping completion signal of a previous electric field of a last-stage electric field, executing rapping operation of the last-stage electric field after a preset time interval, wherein the rapping operation comprises the steps of dividing the last-stage electric field into a plurality of rapping areas according to the distribution condition of rapping hammers on a rapping shaft of the last-stage electric field; and controlling the rapping shaft to rotate according to a preset rapping time sequence, and rapping the corresponding rapping areas through the rapping hammers, wherein when each rapping hammer raps the corresponding rapping area, the power supply voltage of the final-stage electric field is increased to a preset voltage value. According to the scheme, step-by-step rapping of areas of the final-stage electric field is achieved, meanwhile, boosting rapping of the final-stage electric field is achieved, and the reentrainment dust amount of the final-stage electric field is greatly reduced.
Owner:浙江菲达环保科技股份有限公司
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