53results about How to "Real-time monitoring of current" patented technology

The invention relates to a system and method for the online testing of a radiation effect of a modular digital integrated circuit, and the system enables all needed function circuits in the effect testing to be divided into relatively independent modules on the basis of summarizing the similarities and differences of conventional digital integrated circuit radiation effect online testing systems. The electrical and mechanical connection among the modules, the design in the modules and the mechanical structure of a system board respectively employ conventional industrial standards, thereby achieving a purpose that a system can employ a commercial module or an independently developed modular for quick connection, enabling the system to be better in expandability, and saving the design time and cost of hardware. The method can be used for the majority of the online testing of the radiation effect of digital integrated circuits of bullets and satellites. The system plays an important role in standardizing a national radiation effect online testing system.

The present invention relates to in-situ fault diagnosing technology for turn-to-turn short circuit of transformer windings based on change in loss. The technological scheme includes sampling and measuring the voltage and currents of transformer in both sides, calculating the power in both sides, calculating the power difference in both sides or loss of the transformer, comparing with historical data of the transformer to determine whether to exhibit turn-to-turn short circuit fault and the fault degree. The present invention makes it possible to find the turn-to-turn short circuit fault early and accurately and determine the phase the fault is in while monitoring the current, voltage, active power, reactive power, power factor, etc.

The invention discloses a mid and low-voltage distribution network intelligent monitoring system based on a 3G communication network, which comprises a remote monitoring main station, a monitoring substation and a communication system, wherein the remote monitoring main station is in the highest layer of the entire system and is in charge of graphic display, background processing, report output, remote power device control and interaction completion between an upper computer and the bottom monitoring substation; the monitoring substation is an execution layer of the entire system and is in charge of uploading various states of a field device, receiving various instructions issued by the upper computer and instructing a field intelligent terminal to complete a required command; and the communication system is used for remotely monitoring interaction of data between the monitoring main station and the monitoring substation. Through recording and analyzing the operation state of the power device in real time, the working state and the service life of the power device are reasonably judged for later reading and check. Based on the 3G communication network, the system of the invention realizes functions of telemetering, remote communication, remote control, remote vision, device health state detection, environmental detection, preliminary electricity analysis and the like.

The invention relates to an intelligent diving lithium battery pack with a pressure compensating device and a preparation method thereof, belonging to the field of lithium ions. A battery pack case is internally provided with a plurality of monomer lithium batteries connected in series and in parallel, a battery management system as well as a pressure compensating device consisting of a case, an oil filling valve, watertight sockets, a compensating leather bag, a check valve and a protective cover. Positive and negative lugs of each monomer lithium battery are provided with pole columns which are riveted on the lugs of the monomer lithium batteries through a riveting structure; the battery pack in the case is electrically connected by connecting busbars among the pole columns on the tops of the adjacent monomer batteries; the compensating leather bag is arranged above the case and surrounds a closed space together with the case; the periphery of the compensating leather bag is in a form of a gauffer; the check valve is arranged on the top of the compensating leather bag; and the storage battery case and the lithium batteries are free from appearance deformation and performance damage. The intelligent diving lithium battery pack has the advantages of long service life, high specific flow, high safety and low cost, and can meet the requirements for deep-diving equipment.

The invention provides a wireless universal air-conditioner remote control socket based on a wireless sensor network. The remote control socket comprises a socket circuit, a commercial power 220V socket, an air-conditioner plug, a GPRS / GSM module, a computer wireless communication module, a mobile phone and a computer. Wireless sensor network, GPRS / GSM, electric energy detection, computer and traditional universal remote control technology are employed. The socket circuit realizes switch of the air-conditioner plug and the commercial power 220V socket. A user can send an instruction to the computer through the GPRS / GSM module or input the instruction directly on the computer. The instruction is sent to the socket circuit through the computer wireless communication module. According to an instruction requirement, the socket circuit can carry out arrangement and state adjustment on an air-conditioner of an arbitrary brand, and simultaneously the socket circuit detects a work parameter of the air-conditioner continuously and sends the work parameter to the computer for processing. When the work parameter of the air-conditioner exceeds a safe threshold scope, the socket circuit cut off the electricity supply timely and gives an alarm, thus utilizing the mobile phone or computer to carry out remote control and real-time monitoring on the air-conditioner of an arbitrary brand is realized.

The invention relates to a distributed photovoltaic module string and module volt-ampere (IV) characteristic curve on-line measurement system, which comprises a photovoltaic module wireless voltage sensor, a photovoltaic subarray IV curve scanning module and an upper computer data management center. The photovoltaic module wireless voltage sensor is used for measuring module voltage, is powered by a super-capacitor and a photovoltaic module, and transmits voltage data to the IV curve scanning module through a wireless sensor network; the IV characteristic curve scanning module carries out time-sharing IV curve scanning on each module string, triggers the voltage sensor of a module to acquire synchronous voltage data so as to realize module IV curve scanning, and transmits IV data of the modules and the module strings to the upper computer data management center. The distributed photovoltaic module string and the module volt-ampere (IV) characteristic curve on-line measurement system provided by the invention can acquire accurate photovoltaic module string and module IV characteristic curve data on-line and in real-time, so that the efficiency and the accuracy in testing, evaluating and diagnosing a photovoltaic power generation array are effectively improved.

The invention discloses a fire-fighting early warning system for an electrical fire. The system comprises an equipment data management module, the equipment data management module comprises a data acquisition unit and a data transmission unit; the data acquisition unit is used for acquiring electrical data of a key monitoring area by deploying a plurality of sensors; the data transmission unit adopts GPRS and Socket technologies to send and receive sensor data in real time, and on the basis of normal data receiving, data receiving and storage are completed by combining a heartbeat monitoring technology and using Socket. The invention relates to the technical field of electrical fire protection. The electrical fire protection early warning platform is based on a multi-sensor acquisition technology and a big data analysis technology. A data acquisition module, a data transmission module, a big data analysis module and a data display module are provided, and compared with a traditional electrical fire alarm system, the platform is more intelligent, a fire hazard event is processed and responded more quickly, and a fire can be found in time in the fire initiation stage.

The invention discloses an automobile starting system and method based on low-voltage storage battery intelligent management. The system comprises a storage battery, an IBS sensor, an engine control system, a vehicle control unit and a DC / DC converter, and the IBS sensor is used for monitoring battery state information of the storage battery and voltage drop value information in the process of starting an engine by a 12V starter in real time; the engine control system is used for receiving the battery state information and the voltage drop value information and feeding back the battery state information and the voltage drop value information to the vehicle control unit; and the vehicle control unit is used for adjusting the charging power / voltage of the DC / DC converter to the storage battery in real time and controlling the SOC of the storage battery to meet a preset SOC threshold value. By the adoption of the method, the SOC of the storage battery and the starting capacity of a 12V starter for starting an engine are guaranteed as well after the load of the whole vehicle is dynamically changed and the long-term use performance of the storage battery is attenuated.

The invention discloses a photovoltaic power station monitoring system and method and a storage medium. The photovoltaic power station monitoring system comprises a plurality of MPPT interface monitoring units, an audible and visual alarm and a monitoring terminal which are all connected with an operation controller. Each MPPT interface monitoring unit comprises a voltage and current monitoring module, a temperature sensor and a sunlight radiation sensor; the MPPT interface monitoring units preprocess monitoring data of the voltage and current monitoring module, the temperature sensor and the sunlight radiation sensor and then send the monitoring data to the operation controller in real time, the operation controller sends an operation analysis result to the audible and visual alarm after preset algorithm operation and control strategy analysis, early warning is sent out, and meanwhile the operation analysis result is sent to the monitoring terminal. And real-time monitoring data and early warning information are provided for further operation of an administrator. Compared with the prior art, the photovoltaic power station monitoring system can monitor the working state of the photovoltaic power station in real time, can identify abnormity or fault hidden dangers of photovoltaic strings and assemblies, timely discovers and eliminates faults, and enables the photovoltaic power station to well and orderly work in an optimal state.

The embodiment of the invention discloses a method for controlling an electric outside rear-view mirror. By means of the method, the problems that according to an existing control mode for the electric outside rear-view mirror, locked-rotor detection is prone to failure, and control is unstable are solved. The method comprises the steps that a CAN message generated when a car moves is obtained; a motor of the electric outside rear-view mirror is driven according to the CAN message so that the electric outside rear-view mirror can make corresponding actions; and the current of the motor during operating is monitored in real time, and if the current exceeds the preset threshold value, the motor is controlled to stop running. The embodiment of the invention further provides a device for controlling the electric outside rear-view mirror.

The invention relates to an intelligent solar conjunction box in the field of solar technology. The conjunction box comprises a conjunction box body and a conjunction box cover match covers the conjunction box body in pair, an accommodation cavity is formed between the conjunction box body and the conjunction box cover, and internally provided with a master control circuit board, the front end of the master control circuit board is welded to four binding posts, a first terminal and a second terminal are respectively welded at the two sides of the rear end of the master control circuit board, the master control circuit board comprises a master control chip, a thermosensitive sensor, a voltage sensor and a current sensor, and the master control chip is mounted between a first joint and a second joint. The master control circuit board is additionally arranged to monitor the temperature, voltage and current of a solar cell panel in real time; and thus, defects and hidden safety hazard in a system can be found in shortest time, faults can be rapidly eliminated, power of the solar cell panel in different complex climate environments can be output in an optimized manner, the total photovoltaic power generation efficiency of the solar cell panel is improved, and the power generation cost is reduced.

The invention discloses an intelligent reactive power compensation and electric energy parameter display integrated control device, and the device comprises a microprocessor unit, a signal collection unit, an electric energy parameter analysis metering unit, a power supply unit, a display unit, a man-machine conversation unit, a storage unit, an alarm unit, a temperature detection unit, a communication unit, and a drive output unit. The device integrates power grid monitoring and reactive power compensation, can compensate for the reactive loss of a power grid, improves the power factor, reduces the line loss, and improves the loading capability and power supply quality of the power grid. Meanwhile, the method also can monitor three-phase voltage and current and the power factor of the power grid in real time, can complete the integrated management of the monitoring, analysis and processing, report output and remote operation of a whole low-voltage power distribution line, and provides the first-hand reliable data for the scientific management of the low-voltage power distribution line.

The invention relates to a warehouse electricity utilization monitoring device. The warehouse electricity utilization monitoring device includes a single-chip microcomputer as well as a power source module, a relay control module, a remote communication module, a current transformer, a voltage transformer, an electric leakage sampling module, a sensor group, a remote alarm module and an on-site alarm module which are respectively connected with the single-chip microcomputer; each sensor in the sensor group is connected with the single-chip microcomputer through an optically-coupled isolator; and the power source module is connected with the single-chip microcomputer, the remote alarm module, the on-site alarm module, the remote communication module and the sensors in the sensor group respectively. The warehouse electricity utilization monitoring device provided by the invention can monitor the environment data, current, voltage and data about electric leakage of the warehouse in real time, and transmits detected data to a remote upper computer and receive instruction data of the upper computer, and can realize control on electricity utilization switches of the warehouse, and realize intelligent control on electricity utilization of the warehouse. The warehouse electricity utilization monitoring device has the advantages of simple structure, convenient use and high safety.

The invention belongs to the field of sockets, and particularly relates to a fixed installation type safety socket with a quick power-off blocking function. Aiming at solving the problems that an existing socket is not internally provided with any electric leakage or electric shock blocking device, does not have remote control and automatic power-off functions, lacks an internet of things function and cannot be linked with other fire detection equipment, the invention proposes the technical scheme that the device comprises a bottom shell, a fixed panel is arranged on the bottom shell, an anti-misplug power jack is formed in the panel, a circuit board is installed in the bottom shell, a first wiring terminal, a second wiring terminal and a third wiring terminal are arranged on the circuit board; and a current transformer, a residual electric quantity transformer, a gear motor, a pressing piece, a pressing wheel and an elastic piece are arranged on the circuit board. The safety socket can realize automatic monitoring and shunt power-off of lines connected with the sockets, can realize quick power-off within half seconds, can avoid death accidents caused by electric leakage or electric shock of personnel, and can realize integration of remote power-off and remote switching-on.

The invention discloses a power system simulation device and a simulation method for high-speed electric vehicle. The traditional fossil-fueled vehicles severely pollute the environment, and have thepotential to develop towards the direction of low noise and zero emission electric vehicle. The composition of the invention comprises a series type double-motor (5); the series type double-motor adopts two permanent magnet synchronous motors connected in series and connected to a left motor controller (7) and a right motor controller (4) through wires respectively; the left motor controller and the right motor controller are connected to a data acquisition and control system (3) through wires respectively; the data acquisition and control system is connected to a CAN bus interface module (2)through a CAN bus; the CAN bus interface module is connected to the industrial control computer (1) through a USB interface; the right end of the series type double-motor is connected to a torque sensor (8) through a coupling A (6); the torque sensor is connected to a gearbox (14) through a coupling B (9); and the gearbox is connected to the transaxle (15) through a connecting shaft. The inventionis used for high-speed electric vehicle power system simulation device.

The invention discloses an electric micro tillage machine research and development experimental device and method, using an experimental device including a motor controller and an online acquisition system, and cooperated with an electric dynamometer test bench. When using, the online acquisition system is used to collect the input voltage and current of the controller and a motor speed signal output by the controller; then a power system is installed on the electric dynamometer test bench, the voltage input to the controller by a battery simulator is adjusted, and the voltage is adjusted in the same interval unit in sequence, so as to test the dynamic characteristics and efficiency characteristics of the power system at different voltages; then expected corresponding relationships betweenparameters and electrical signals under different working conditions and tool conditions are obtained; the electric micro tillage machine research and development experimental device and method are used to match the power systems with different types of electric micro tillage machines and realize the maximization of the efficiency, thereby improving product performance and reducing manufacturingcost and use cost.

The invention discloses a vehicle explosion-proof battery scheme and system. The scheme comprises the following steps: S10, judging whether a battery management system is in a wake-up state, if yes, carrying out S20, and if not, carrying out S30; S20, judging whether the information, such as the single battery pack voltage, the temperature and the battery pack air pressure sent by a slave board reaches a safety threshold value point or not through the battery management system mainboard, if so, carrying out S21, and if not, returning to the S10; S30, detecting whether the air pressure in the battery pack reaches a safety threshold point or not through an air pressure sensor, if so, executing S40, and if not, returning to the S10; and S40, opening a fire hydrant, and performing rapid fire extinguishing and cooling work on the on-fire battery pack. Key parameters such as air pressure, insulation resistance, temperature and current are monitored in real time through the battery management system in the control strategy level, fault processing is carried out when a power battery system is abnormal, and a fire hydrant can be actively opened to prevent thermal runaway spreading of a battery pack when thermal runaway happens to the battery system.

The invention provides a high-voltage power transmission line temperature measurement system. The high-voltage power transmission line temperature measurement system is characterized by comprising a high-voltage three-phase (A, B and C) power transmission line, three wireless temperature measurement sensors, a solar transceiver, an indoor temperature measurement collector and a temperature measurement server PC, wherein the three wireless temperature measurement sensors are hung on three wires of the high-voltage three-phase power transmission line respectively, the solar transceiver is arranged close to the wireless temperature measurement sensors, and the indoor temperature measurement collector and the temperature measurement server PC are connected with each other and arranged indoors. The high-voltage power transmission line temperature measurement system can reflect the on-line operation temperature states of 10kV-110kV power transmission lines timely and accurately and remind operation and management personnel to adjust and process the line operation states according to the circumstances so as to ensure the safe operation of the power transmission lines.

The invention discloses a wireless charging device for a water surface robot. A power supply converter supplies power to a power supply main controller, an inversion circuit and a power supply detection circuit, wherein the inversion circuit comprises an inversion isolation module and four SiCMOSFET full-bridge circuits. The output of the inversion circuit is connected with a primary coil and a coupler, so as to carry out wireless energy transmission on an equipment cavity. The power supply detection circuit detects a voltage, a current and the temperature of the inversion circuit and feeds back the voltage, the current and the temperature to the power supply main controller. The equipment power converter supplies power to the equipment main controller, a voltage stabilizing circuit and anequipment detection circuit. A secondary coil and a coupler receive energy transmitted by the primary coil and the coupler and then the energy is used for charging a load after passing through a rectifier bridge and the voltage stabilizing circuit. The equipment detection circuit detects the voltage, current and working temperature outputted by the voltage stabilizing circuit and feeds back the voltage, current and working temperature to the equipment main controller. Non-contact electric energy transmission is realized, the inversion circuit is high in efficiency, and the charging efficiencyis improved.

The invention discloses a high-efficiency low-power consumption electronic controller used for a dust collector. According to the high-efficiency low-power consumption electronic controller disclosed by the invention, a voltage value signal acquired by a voltage acquisition unit, a current value signal acquired by a current acquisition unit and a zero value signal acquired by a zero passage acquisition unit are received by adopting a single-chip microcomputer, and are transmitted to a motor drive unit after operation processing is performed on the signals, and by combining a fuzzy control algorithm in the single-chip microcomputer, constant-power control is realized, and the goal that no matter what condition the dust collector is, the total power maintains at the power value of the maximum efficiency point or other power values is achieved. Thus, under the condition that the suction power of the dust collector is not reduced, the input power of the dust collector can be reduced, and the goals that the energy is saved and the energy efficiency is improved are achieved.

The invention relates to a use method for a transcutaneous electrical nerve stimulation physical headache therapeutic instrument. The use method includes the following steps that: a power source is turned on; a system is initialized; the system monitors the voltage and current of therapeutic pulses; a treatment mode is selected, and treatment time is set; a treatment pulse frequency is selected, and the system generates treatment pulses; and treatment is terminated. The use method of the transcutaneous electrical nerve stimulation physical headache therapeutic instrument is a use method of a frequency-adjustable headache therapeutic instrument which can provide a plurality of treatment modes for a user to select. The headache therapeutic instrument has three working modes; the operating frequency of the headache therapeutic instrument is unstable; the headache therapeutic instrument can monitor the voltage and current of the treatment pulses in real time, and therefore, a potential safety risk is low; a low-power consumption controller and a simple pulse forming circuit are adopted, and therefore, the headache therapeutic instrument can work for a long time, and the prolonging of the service life of the power source can be benefitted; the headache therapeutic instrument can render a good therapeutic effect on migraine headache, and can also relieve symptoms such as insomnia, anxiety and depression, and enables certain therapeutic effects.

The invention relates to a telemetering device assembly in the technical field of power grids. The telemetering device assembly comprises a box, a clamping mechanism, a sleeve, a GPRS antenna and a control unit, wherein the box is made of a magnetic shielding material; the clamping mechanism is mounted on the box, is used for clamping cables, and is provided with a detection assembly for detectingthe current and voltage of conductors in the cables; the sleeve is fixed on the box and can be detachably sleeved on a copper bar at the terminal of a substation power transformer during the detection; the GPRS antenna is mounted on the box and communicably connected with a remote control platform; the control unit comprises a power management circuit board, a data processing circuit board and aremote control circuit board; and the GPRS antenna, the remote control circuit board and the data processing circuit board are connected in sequence. The telemetering device assembly is capable of monitoring the current and voltage values and fault points of power grids in real time, is small in volume, and is capable of saving a large number of control cabinets so as to remarkably reduce the substation construction cost.

The invention provides a method, a device and a system for household energy comprehensive management. The system comprises an intelligent socket, an intelligent switch and an edge intelligent terminal, wherein an acquisition module, an analysis module, a storage module, a control module, a communication module and the like are integrated in the edge intelligent terminal; the intelligent socket cancollect data such as current and voltage of a socket, and meanwhile, a remote control function can be realized; and the intelligent switch is connected with indoor light, an entrance guard and otherdevices, can collect the voltage and current of the switch control device, and achieves a remote control function. According to the system, the edge intelligent terminal is connected with the intelligent socket and the intelligent switch in an HPLC power line carrier communication mode; in addition, the remote control function can be realized; and the intelligent switch is connected with the indoor light, the entrance guard and other devices, so the voltage and current of the switch control device are collected, and the remote control function is achieved.

The invention discloses a street lamp automatic acquisition and remote control device which comprises a control module, and an acquisition module, an NB-IoT (Internet of Things) communication module and an AC / DC power supply module which are connected with the control module, and the NB-IoT (Internet of Things) communication module is also connected with an NB-IoT antenna. By adopting the device,a plurality of electric parameters such as a voltage, a current, power, a power factor, frequency and electric energy can be acquired, and the current and electric quantity consumption condition electric parameters of alternating current equipment can be monitored; and the NB-IoT wireless technology is used for communicating with a base station, so that remote control is realized.

The invention discloses a load circuit and a breakage detection method thereof, and relates to the technical field of circuits. The load circuit comprises a controller, a controllable switch, a load,a monitoring module, a switch module and an alarm module; the controller is electrically connected with the controllable switch, and the controllable switch is electrically connected with the load circuit; the monitoring module is electrically connected with the output end of the controllable switch, and when it is detected that zero current exists at the output end of the controllable switch, a first high level signal is output to the switch module; the switch module is electrically connected with the controller, the monitoring module and the alarm module separately, and when the first high level signal and a second high level signal which is output by the controller are received simultaneously, the load circuit is connected; when the switch module is connected, the alarm module generatesa breakage alarm signal and outputs the breakage alarm signal outwards. When the load is abnormal and breakage occurs on the load circuit, a user can be reminded timely to find the anomaly, and therefore the product quality and electricity safety are guaranteed.

The invention provides a mining battery authority equalization management system. The mining battery authority equalization management system comprises a main control unit, an acquisition module, a control module and a signal bus. The main control unit is electrically connected with a pack end acquisition module, a discharging circuit, a charging unit and an external upper computer separately, the external upper computer is electrically connected with an operation authority module, the main control module is in communication with the acquisition module and the control module separately, and the signal bus is electrically connected with the acquisition module and the control module. By arranging the operation authority module, with an independent battery acquisition unit, the basic parameters such as pack end voltage, current and temperature and single voltage of a battery pack can be monitored in real time, and a touch screen is used for configuring battery protection parameters and achieving passive equalization of the electric quantity of a battery unit management system, so that reliable operation of a battery system is ensured, convenience is brought to use by mine workers, equalization time is shortened, and efficiency is improved.

The application discloses an overcurrent protection system, which includes a current detection module, a current display control module and an intelligent start-stop module. The current detection module is installed on the electrical equipment, and the current display control module is connected with the current detection module and The intelligent start-stop module is connected, and the intelligent start-stop module is installed on the electrical equipment switch. The invention can monitor the current of the equipment in real time, disconnect in time when the current is overcurrent, and prevent damage to the equipment.

The invention provides a wireless universal air-conditioner remote control socket based on a wireless sensor network. The remote control socket comprises a socket circuit, a commercial power 220V socket, an air-conditioner plug, a GPRS / GSM module, a computer wireless communication module, a mobile phone and a computer. Wireless sensor network, GPRS / GSM, electric energy detection, computer and traditional universal remote control technology are employed. The socket circuit realizes switch of the air-conditioner plug and the commercial power 220V socket. A user can send an instruction to the computer through the GPRS / GSM module or input the instruction directly on the computer. The instruction is sent to the socket circuit through the computer wireless communication module. According to an instruction requirement, the socket circuit can carry out arrangement and state adjustment on an air-conditioner of an arbitrary brand, and simultaneously the socket circuit detects a work parameter of the air-conditioner continuously and sends the work parameter to the computer for processing. When the work parameter of the air-conditioner exceeds a safe threshold scope, the socket circuit cut off the electricity supply timely and gives an alarm, thus utilizing the mobile phone or computer to carry out remote control and real-time monitoring on the air-conditioner of an arbitrary brand is realized.