39results about How to "Monitor voltage" patented technology

Monitoring device is composed of resistance divider circuit, multiway switch circuit, difference operational amplification circuit, A / D conversion circuit, single chip and CAN communication circuit connected in sequence and communication interface to main controller of fuel cell. The device is capable of monitoring voltages of 59 single cells in fuel cell pile. Combining multiple disclosed monitoring devices with communication between main controller and each equipment realized through CAN network can monitor more cells. Features are: small size, low cost, easy of expansion, high measuring accuracy (maximum absolute error less than 0.08V) and quick measuring speed (time for measuring 59 single cell is less than 0.05 second).

This invention discloses a system and method for monitoring the voltage of a fuel cell stack. The system comprises a plurality of differential amplifiers, a switching network, an analog to digital converter and a controller. The system may further include a remote PC. Each differential amplifier has a high common-mode rejection ratio. The differential amplifiers are connected to terminals in the fuel cell stack at which the voltage is to be measured. An output of a single differential amplifier is chosen by the switching network, under the direction of the controller, and converted to digital values by the analog to digital converter. The digital values are used by the controller to calculate the cell voltage of the fuel cell. The controller also controls the analog to digital converter. The invention further comprises a calibration method and apparatus which are used to calibrate the measurement system before performing voltage measurement on the fuel cell stack. This invention allows the cells voltage of a fuel cell with almost any common-mode voltage to be measured using readily available differential amplifiers.

The invention discloses a method for pre-lithiation of a cathode pole piece of a lithium ion battery. The method comprises the step of forming an external short-circuited circuit between the anode and the cathode of a button battery. According to the invention, a solid polymer electrolyte film is formed on a cathode surface in advance in the manner of pre-lithiation, so that the lithium ion consumed in the process of firstly charging the whole battery can be avoided and the first coulombic efficiency of the battery is increased.

The invention relates to a semiconductor laser device aging tool which is characterized by comprising a main control panel, a communication connection board, multiple water cooling boards, an operation panel and a machine cabinet. The main control panel, the communication connection board and the operation panel are respectively assembled in the machine cabinet. Each water cooling board is installed in the machine cabinet via a guide rail. The main control panel is connected with an upper computer via a 485 communication mode. The communication connection board connects the water cooling boards and the main control panel via flat cables. The operation panel controls power-on and power-off of the whole system of the aging tool, and the state of each aging device is indicated. Simultaneous aging of multiple semiconductor laser devices can be realized, aging parameters of each laser device can be independently set, and current, voltage, power and temperature of the laser devices can be monitored simultaneously.

The control system includes battery control module (BCM) and battery signal collection module (BSCM). BSCM collects signals of voltage and temperature of single battery, and implements data processing. The processed data are sent to BCM. Reducing wires for connecting single battery to the battery controller, the invention can monitor voltage and temperature of single battery precisely in all its aspects, and reduces workload of central processor in the battery control system.

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.

An intelligent management system of a seismographic station relates to an intelligent manager, and aims at solving the problem that a remote monitoring function of the seismographic station is incomplete. The intelligent manager comprises an equipment management system for manage data collected by instruments and equipment of the seismographic station, an intelligent power supply system for supplying power to seismic instruments and equipment, a communication management system for controlling communication between a master control system and a station center, an environment and safety monitoring system for monitoring the environment and safety surrounding the seismic equipment, and the master control system for controlling the equipment management system, the intelligent power supply system, the redundancy communication management system and the environment and safety monitoring system in a coordinated manner according to a control instruction of the station center. The system can detect the surrounding environment of the seismographic station, store the collected data, provide DC and AC output, and provide a redundancy function design of two sets of communication equipment, and the monitoring function is complete.

The invention relates to a power assembly suitable for a solar aircraft and an output control method thereof, wherein the power assembly comprises a solar cell panel, a power manager, a power change-over switch, an accumulator, a voltage divider, airborne equipment and a plurality of groups of power execution units, wherein the power manager is respectively connected with the solar cell panel, the power change-over switch and the accumulator; the accumulator is connected with the power change-over switch; the power change-over switch is respectively connected with the airborne equipment and the power execution units through the voltage divider; and the airborne equipment is in communication connection with the power execution units. Compared with the prior art, the power assembly provided by the invention has the advantages of supplying energy sources absorbed by solar energy to electric equipment at maximal efficiency and improving the power output and power consumption conversion efficiency of the aircraft.

The invention discloses an electrical line safety intelligent monitoring instrument which comprises a host and a control panel; wherein the host is provided with a CPU (central processing unit), a current voltage acquisition module, an electric leakage acquisition module, a temperature acquisition module, an overload acquisition module, a power supply processing module, a control loop module, a power-off control module and a communication module, the current voltage acquisition module, the electric leakage acquisition module, the temperature acquisition module, the overload acquisition module,the power supply processing module, the control loop module, the power-off control module and the communication module are electrically connected with the CPU, and the electrical line safety intelligent monitoring instrument further comprises a monitoring power supply input and output interface; the current, the temperature, the voltage, the overvoltage, the leakage current and other informationof each detection point can be monitored for 24 hours in real time; according to the relevant parameters of the loop of electrical line equipment, the cause of faults can be judged, an enterprise is guided to carry out treatment, potential safety hazards of potential electrical line fire disasters are eliminated, and electricity safety is comprehensively guaranteed.

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 headache therapeutic instrument control system technical field and relates to a control system for a transcutaneous electrical nerve stimulation physical headache therapeutic instrument. The control system comprises a power supply module, a power source voltage regulation module, a power source management module, a controller circuit and a pulse formation circuit; thepower source module is electrically connected with the pulse formation circuit through the power source voltage regulation module; the power source module is electrically connected with the controllercircuit through the power source management module; the controller circuit is electrically connected with the power source voltage regulation module and the power source management module; and the controller circuit is electrically connected with the pulse formation circuit and is used for detecting the pulse formation circuit. The control system for the transcutaneous electrical nerve stimulation physical headache therapeutic instrument has the advantages of low power consumption, light and simple design structure, simple operation and high safety, and can assist in saving electric energy and regularly monitor the voltage and current of electric pulses. According to the control system of the invention, the service life of a power source can be prolonged, the frequency of the electric pulses can be changed according to the demand of a user; and working modes of three frequencies are designed, so that the user can conveniently select the working modes.

The invention discloses a thorn sheet for simulating short-circuit thermal runaway in a lithium-ion battery, a sample battery cell and a method. The thorn sheet comprises a metal sheet; at least one sharp corner extending outwards is arranged on the metal sheet; the sharp corner is made of alloy with a temperature memory effect; the diameter of the sharp corner is gradually reduced along the direction far away from the metal sheet; one side of the metal sheet is attached to the positive plate of a to-be-tested battery, and the other side of the metal sheet faces a diaphragm between the positive plate and the negative plate of a to-be-tested battery; and the sharp corner is set to be used for puncturing the diaphragm after the temperature of the to-be-tested battery reaches the deformationtemperature of the metal sheet, so that the to-be-tested battery is internally short-circuited. The short-circuit thermal runaway in the lithium-ion battery can be simulated.

The invention provides an electromagnetic compatibility large current injection immunity test system and method. The electromagnetic compatibility large current injection immunity test system comprises a large current injection immunity test environment system and an auxiliary monitoring system which are connected; the large current injection immunity test environment system comprises a immunity test equipment current coupling clamp and a vehicle under test which are connected; the auxiliary monitoring system comprises an audio and video monitoring system, a network communication monitoring system and an electric parameter monitoring system; the audio and video monitoring system is used for monitoring the working state of a whole vehicle; the network communication monitoring system is usedfor monitoring the whole vehicle-mounted bus network communication; the electrical parameter monitoring system is used for monitoring voltage and current parameters of electric devices under test inthe vehicle under test. The electromagnetic compatibility large current injection immunity test system can monitor, record and playback the working phenomenon of the electrical devices under test, thevehicle network communication and voltage and current conditions in the immunity process of the electrical devices under test in real time when a large current injection immunity test is carried out.

The invention discloses a battery management system and a battery management method. The system comprises a battery pack, sub-string battery management systems and a general battery management system, wherein the battery pack is formed by parallel connection of a plurality of sub-string batteries; each sub-string battery is formed by connecting a plurality of single batteries in series; the quantity of the sub-string battery management systems is the same as that of sub-strings; two lead wires are led out from each connection point of the single batteries in each set of the sub-string battery, wherein one lead wire is directly connected with the sub-string battery management systems and the other lead wire is connected with the sub-string battery management systems through a thermistor; and the general battery management system is connected with the sub-string battery management system and a control system of an electric automobile. According to the battery management system and the battery management method, temperature and voltage faults can be found in the shortest time, damages and fire breakout on the battery pack can be avoided, and the safety performance of the battery pack is remarkably improved.

The present invention provides a high-energy-density battery pack, the electrodes of the battery cells are shaped and connected, so that the function of series-parallel connection combination of the single battery cells is realized; meanwhile, through the arranged voltage, current and temperature monitoring and protection circuit, the functions of charging and discharging protection, short-circuitprotection and equalization of the battery cell are realized; the invention provides a multi-cell switching test device and a multi-cell switching test method, which can perform series-parallel combined switching on single cells in a test state and monitor voltage, current and temperature information at the same time. According to the invention, the production cost is reduced through the modularbattery cell, and the research, development, test and maintenance efficiency of the battery cell and the battery pack is improved.

The invention discloses a train brake recovery system and method and a train. The system comprises a traction net, a train and an energy storage electric station, wherein the train comprises an electric brake, a battery, a charging capacitor, a power distributor, a first two-way DC / DC converter, a second two-way DC / DC converter and a first controller, wherein the power distributor is connected with the electric brake; a node is formed between the power distributor and the electric brake; one end of the first two-way DC / DC converter is connected with the battery; the other end of the first two-way DC / DC converter is connected with the node; one end of the second two-way DC / DC converter is connected with the charging capacitor; the other end of the second two-way DC / DC converter is connected with the node; the first controller is used for controlling the battery or the charging capacitor to absorb the braking electric energy according to the voltage of the traction net during the train braking; the energy storage electric station is connected with the traction net; a second controller of the energy storage electric station controls the energy storage electric station to perform charging or discharging according to the voltage of the traction net. The charging and the discharging of the battery, the charging capacitor and the energy storage electric station are controlled through monitoring the voltage of the traction net; the recovery and the reutilization of the braking electric energy can be realized; the energy sources are effectively saved.

This invention discloses a system and method for monitoring the voltage of a fuel cell stack. The system comprises a plurality of differential amplifiers, a switching network, an analog to digital converter and a controller. The system may further include a remote PC. Each differential amplifier has a high common-mode rejection ratio. The differential amplifiers are connected to terminals in the fuel cell stack at which the voltage is to be measured. An output of a single differential amplifier is chosen by the switching network, under the direction of the controller, and converted to digital values by the analog to digital converter. The digital values are used by the controller to calculate the cell voltage of the fuel cell. The controller also controls the analog to digital converter. The invention further comprises a calibration method and apparatus which are used to calibrate the measurement system before performing voltage measurement on the fuel cell stack. This invention allows the cells voltage of a fuel cell with almost any common-mode voltage to be measured using readily available differential amplifiers.

The invention provides a cloud electric meter system based on an Internet of Things intelligent circuit breaker and a control method. The system comprises the Internet, a cloud server, a remote user side, an electric charge calculation system, a power utilization control unit and control software, wherein the remote user side is connected with the cloud server through the Internet, the electric charge calculation system is connected with the cloud server through the Internet, the power utilization control unit is connected with the cloud server through the Internet, and the control software isinstalled on the cloud server and the remote user side. One Internet of Things intelligent circuit breaker is correspondingly connected with one electricity user or one path of electric equipment, and the communication module is connected with the cloud server. According to the cloud electric meter system based on the Internet of Things intelligent circuit breaker and the control method providedby the invention, by using the Internet of Things intelligent circuit breaker with the metering function and the autonomously developed software installed on a cloud and a client, refined metering ofelectric quantity, refined calculation of electric charge, real-time remote mobile query of the electric quantity and the electric charge and safe power utilization management can be realized.

The invention relates to the technical field of battery management, in particular to a high-precision battery discharge management system comprising a management module. The management module is in signal connection with a fault diagnosis module; the management module specifically comprises a battery pack management module, a single battery management module and an electric quantity remaining monitoring module; the battery pack management module comprises a dynamic voltage detector module, a dynamic current detector module and a dynamic temperature sensor module; the dynamic voltage detector module detects the voltage of the battery pack module, the dynamic current detector module monitors the current of the battery pack, and the dynamic temperature sensor module monitors the temperature of the battery pack module. The temperature, voltage and current discharge conditions of the battery pack and the single battery can be monitored in real time, detection and management of the battery can be effectively realized, and when the battery is abnormal, the battery needs to be maintained in time so that the occurrence of dangerous conditions is avoided.

The invention discloses a power monitoring and energy saving system which comprises a discharging circuit module and a grid-connected inverting circuit module, wherein the grid-connected inverting circuit module comprises a high-performance DSP (Digital Signal Processing) main board; the input end of the discharging circuit module is connected into the input end of the grid-connected inverting circuit module, and the output end of the grid-connected inverting circuit module is connected into a power grid; the discharging circuit module comprises an LC filtering circuit consisting an inductor L1 and a capacitor C1 and a power pipe Q1; and the power pipe Q1 and an inverting circuit are both controlled by the high-performance DSP main board. The LC filtering circuit is adopted in the discharging module and can obtain constant current and voltage; and when in use, the system can run in a constant current, resistance and power state just by setting the power supply ageing condition of the system and the current, resistance and power of a storage battery in a charging and discharging test, calculating and analyzing a set parameter by the high-performance DSP main board and outputting a corresponding parameter value for controlling conduction or interruption of the power pipe.

The invention relates to an intelligent auxiliary monitoring system for line safety. The system comprises an information acquisition device, the information acquisition device is connected with a data processing device, the data processing device is connected with a data communication device, and the data communication device communicates with a remote control center through a wireless network; the information acquisition device comprises a current sensor used for acquiring current information of an overhead line, a voltage sensor used for acquiring voltage of the overhead line and a pressure sensor used for acquiring relaxation information of the overhead line, and the pressure sensor is located between the overhead line and an insulator; the data processing device comprises a controller, the controller is connected with a wireless communication module, the wireless communication module is connected to the data communication device through a wireless network, and the data communication device is a relay node; the relay node communicates with the remote control center through the wireless network; and data transmission is carried out between the wireless communication module and the relay node through a ZigBee communication network.

The invention discloses a photovoltaic power station monitoring system, method and storage medium, including a plurality of MPPT interface monitoring units, sound and light alarms and monitoring terminals all connected to an operation controller; wherein the MPPT interface monitoring unit includes a voltage and current monitoring module, a temperature sensor and solar radiation sensor; the MPPT interface monitoring unit preprocesses the monitoring data of the voltage and current monitoring module, temperature sensor and solar radiation sensor and sends it to the operation controller in real time. The analysis results are sent to the sound and light alarm to issue an early warning, and at the same time sent to the monitoring terminal to provide real-time monitoring data and early warning information for further operations by the administrator. Compared with the prior art, the present invention can not only monitor the working status of the photovoltaic power station in real time, but also identify the abnormalities or potential failures of the photovoltaic strings and components, find faults and eliminate them in time, so that the photovoltaic power station can work well and orderly at the most good condition.

The invention discloses an intelligent terminal for quickly judging a disconnection fault of a switch control loop. The intelligent terminal comprises a voltage acquisition terminal; a monitoring module electrically connected with the voltage acquisition terminal; and a wave recording module electrically connected with the voltage acquisition terminal. The problems of long power failure elimination time, high manpower and material resource consumption and poor power supply recovery timeliness caused by long troubleshooting time in the prior art are solved.

A stored program control exchange power supply management unit of the present invention comprises a chassis, a DC power distribution unit (PDU), a radiating unit and a monitoring host. The DC PDU is arranged inside the chassis, the radiating unit is arranged on the chassis, and the DC PDU comprises an input end, an output end and a rectifier. The input end comprises a master power supply and a standby power supply which are both connected with the rectifier to switch the master power supply and the standby power supply, the output end is connected with the rectifier, and the monitoring host is connected with the DC PDU. The advantages of the present invention are that: the master power supply and the standby power supply are arranged and distributed by the rectifier and are inputted to the equipment by the output end, thereby guaranteeing the situations that one of the master power supply and the standby power supply can supply power to the equipment effectively on the condition that the other one of the master power supply and the standby power supply is interrupted, and a stored program control exchange operates stably, and preventing the service interruption.

The invention discloses a series lithium battery charging balance circuit, which comprises a battery pack formed by connecting N battery cores in series, a voltage sampling circuit used for collectingthe voltages of each battery core in the battery pack, a DC-DC power supply module, a DC-DC output control circuit, a switch combination circuit, a switch drive circuit and an MCU control unit, wherein the DC-DC power supply module, the switch combination circuit and the battery pack are connected in sequence, the voltage sampling circuit is connected with the MCU control unit, the MCU control unit, the DC-DC output control circuit and the DC-DC power supply module are connected in sequence, and the MCU control unit, the switch driving circuit and the switch combination circuit are connectedin sequence. According to the invention, the voltages of each battery core in a battery pack can be effectively monitored, the whole battery pack or part of battery cores and even a single battery core are charged, the problem of balanced charging of each battery core in the battery pack is solved, the situation that each battery core needs to be screened due to individual difference is avoided, the tedious manufacturing procedures of various products are greatly reduced, the service life of the products is prolonged, and the safety risk of product use is reduced.

The invention relates to a method for the operation of a motorized flap arrangement (1) of a motor vehicle (2), wherein the flap arrangement (1) has a flap (4) which is pivotable with respect to a motor vehicle body (3), wherein the flap arrangement (1) has a back-driveable drive arrangement (5) for the motorized adjustment of the flap (4) and a control arrangement (6) for controlling the drive arrangement (5). It is proposed that an, in particular gravitationally induced, predetermined flap deflection is detected by means of the control arrangement (6) from a de-energized intermediate position of the flap (4) in a monitoring routine (7) and, in response to the detection of the predetermined flap deflection, a holding routine (8) is triggered in which the drive arrangement (5) is adjusted to a flap-holding position in a holding control circuit.

The invention relates to the technical field of charge and discharge monitoring, in particular to an automatic charge and discharge device, which comprises a load, a charge and discharge unit connected with the load and a power supply respectively, an electric power storage unit connected with the charge and discharge unit, and a hydrogen evolution sensor connected with the electric power storage unit and the charge and discharge unit respectively, wherein the charging and discharging unit comprises a power supply module, a charging module and a main control board, the voltage and current conditions of the charging and discharging unit for the ship are monitored in real time, an audible and visual alarm can be given out when a circuit breaks down, the two rectifying modules are arranged in the charging and discharging unit, the two loops are used alternately, and the service life of the circuit is prolonged. A complete monitoring and guaranteeing system is provided for the electric power storage unit, the charging and discharging device can monitor the hydrogen concentration of the electric power storage unit, when the hydrogen content of the cabin exceeds a set value, the charging and discharging device gives an alarm and stops charging of the storage battery, and when the storage battery is in a charging state, an in-cabin ventilator is automatically started; therefore, the power storage unit is ensured to be at a proper working temperature.

The invention discloses a current transformer waveform monitoring device and a current transformer control system. The monitoring device comprises a data acquisition module which acquires current transformer operation state related data required to be monitored in each operation cycle of a current transformer control algorithm according to the current transformer control algorithm so that monitoring data are obtained; a data acquisition module which is connected with the data acquisition module and used for converting the monitoring data according to the preset communication protocol; and a data display module which is connected with the data transmission module and used for visually displaying the data transmitted by the data transmission module so that current transformer waveform monitoring is realized. Compared with existing waveform monitoring devices, the device is high in real-time performance, and waveform of voltage and current outputted by the current transformer can be monitored in real time. Other hardware equipment does not need to be carried by debugging personnel when the waveform of the current transformer is monitored.

A PLL circuit includes a voltage-controlled oscillator (4), which has two voltage / current converting circuits (40,41) and a selecting circuit (42) for selecting an output of one of those voltage / current converting circuits (40,41). The output of the voltage / current converting circuit selected by the selecting circuit (42) is inputted to a current-controlled oscillator (45). The input side of the voltage / current converting circuit (41) is connected to the output side of a loop filter (3), while the input side of the other voltage / current converting circuit (40) is connected to an input terminal (8) used for evaluating the oscillation characteristic of the voltage-controlled oscillator (4). It is, therefore, achieved to effectively suppress both the temporal variation in output frequency ofthe PLL circuit and the temporal variation in voltage of the loop filter that would otherwise occur due to an arrangement in which the input terminal used for evaluating the oscillation characteristic of the voltage-controlled oscillator is connected to the loop filter via a switch.

The invention relates to a beacon light lithium battery management system, which comprises a detection system, a main control system and a computer system, wherein the detection system comprises a voltage detection module, a current detection module and a temperature detection module, and the computer system comprises a control unit and a display unit. The beacon light lithium battery management system is characterized in that the main control system comprises a communication module, a chip unit and a low frequency awaking module, the detection system is connected with the main control system, and the main control system is wirelessly connected with the computer system through the communication module. Implementation of the beacon light lithium battery management system has the beneficial effects that the beacon light lithium battery management system can effectively monitor variations in voltage, current and temperature of a lithium battery in charging and discharging, prevents the variations from exceeding a reasonable variation range, and avoids damages of the battery. Meanwhile, automatic alarming and a self-recovery temperature switch are provided when the lithium battery is in operation, thereby effectively prolonging the service life of the lithium battery, and realizing stable operations of a beacon light lithium battery pack under harsh natural conditions on the sea.