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175results about How to "Ensure electricity safety" patented technology

Electric automobile charging method and device

The invention relates to the technical field of electric automobiles, and discloses an electric automobile charging method and a device. The method comprises the steps that a charging pile obtains theidentification information of a vehicle-mounted terminal; the charging pile sends a charging request to a charging pile server, and the charging request comprises the identification information of the vehicle-mounted terminal; the charging pile server sends a charging verification request to a cloud server, and the charging verification request comprises the identification information of the vehicle-mounted terminal; the cloud server judges whether a user label corresponding to the identification information of the vehicle-mounted terminal is contained in the preset user label library or not;if the user label corresponding to the identification information of the vehicle-mounted terminal is contained in the preset user label library, the cloud server sends a first charging instruction tothe charging pile server; and the charging pile server sends a second charging instruction to the charging pile, so that the charging pile can carry out charging operation on the vehicle-mounted terminal. According to the technical scheme provided by the electric automobile charging method and the device, the operation steps of charging of an electric automobile can be simplified, the automatic charging without using mobile phones and charging cards is achieved, so that the electricity utilization safety is ensured during using the charging pile, and the service life of the electric automobile is prolonged.
Owner:ZHEJIANG GEELY HLDG GRP CO LTD +1

Alternating-current null-line and firing-line reverse connection and ground line abnormality detection circuit

The invention relates to an alternating-current null-line and firing-line reverse connection and ground line abnormality detection circuit. The alternating-current null-line and firing-line reverse connection and ground line abnormality detection circuit mainly comprises a null-line and firing-line reverse connection detection loop, a ground line abnormality detection loop and a signal output loop, wherein a signal output end of the null-line and firing-line reverse connection detection loop and an output end of the ground line abnormality detection loop are respectively connected with the signal output loop; a PE input end of the ground line abnormality detection loop is respectively connected with an L input end and an N input end, and the signal output loop is connected with a power consumption device controller. The null-line and firing-line reverse connection identification function and the ground line abnormality identification function are integrated, under the situation of the reverse connection of a null line and a firing line and/or abnormality of the ground line, a fault can be accurately judged, and a signal is outputted to the controller of the power consumption device, the controller can take measures to power off the power consumption device in time, the power consumption safety of users can be effectively guaranteed, and the personal injury and death accident can be reduced.
Owner:GUANGDONG WANHE THERMAL ENERGY TECH CO LTD

Disc-shaped suspension porcelain insulator

InactiveCN109494024ASolve the dangerSolve the problem of extremely easy residual dustSuspension/strain insulatorsEngineeringPorcelain insulator
The invention discloses a disc-shaped suspension porcelain insulator comprising a main rod, an insulator body and a rotating sleeve. The middle part of the main rod is fixed with the insulator body; and the upper end of the main rod is fixed with a mounting plate. A rainproof box is fixed at the upper side of the mounting plate by a screw; a gear ring is disposed under the mounting plate; the gearring and the mounting plate are fixedly connected by four connecting plates. A lithium battery is fixed to the inner wall of the rainproof box by a screw. According t the disc-shaped suspension porcelain insulator, when rotating by itself, a rotating rod also rotates around the main rod; because of the autoroatation of the rotating rod, a brush sleeve can drive a brush to rotate continuously so as to clean the outer wall of the insulator body quickly; because of the revolution of the rotating rod, the insulator body is cleaned at a full angle of 360 degrees by the brush to avoid any cleaningblind area, so that the cleaning effect is ensured and the safety of electricity is guaranteed. The problem that the dangerous level is high and dust is left easily when the worker cleans the outer wall of the insulator by using the brush along the outer wall is solved.
Owner:湖南兴华电瓷电器制造有限公司

Monitoring direction finding system based on aircraft-mounted lift-off interferometer

The invention discloses a monitoring direction finding system based on an aircraft-mounted lift-off interferometer. The monitoring direction finding system comprises a rotor wing aircraft, a flight remote controller, monitoring direction finding equipment and a monitoring direction finding terminal, wherein the monitoring direction finding equipment is loaded on the rotor wing aircraft; the monitoring direction finding equipment is connected with the monitoring direction finding terminal through WIFI (Wireless Fidelity); the monitoring direction finding equipment comprises an electronic compass, a GPS (Global Position System) antenna, a GPS module, a direction finding antenna, a receiver, an X86 processing board, a WIFI module and a WIFI omnidirectional antenna; the output end of the GPS antenna is connected with the GPS module; the output end of the GPS module and the output end of the electronic compass are connected with the X86 processing board respectively; the output end of the direction finding antenna is connected with the receiver; the receiver is connected with the X86 processing board; the X86 processing board is connected with the WIFI module; and the WIFI module and the monitoring direction finding terminal are in wireless communication through the WIFI omnidirectional antenna. The monitoring direction finding system based on the aircraft-mounted lift-off interferometer, provided by the invention, can be used for effectively improving the direction finding accuracy.
Owner:CHENGDU JIUHUA YUANTONG TECH DEV

Human body safety socket

The invention relates to a human body safety socket which comprises a socket body and is characterized by also comprising an AC (alternating current) branch detection circuit for monitoring load or electric leakage of the socket, a current detection transformer for detecting the current of the socket, an electric leakage detection coil and an impedance pre-detection circuit adopting a multivibrator, which are respectively connected with a central function controller through an amplifying, rectifying and shaping circuit, wherein the current detection transformer and the electric leakage detection coil are used for detecting the current of the socket; the central function controller is connected with a first relay responsible for the on/off of test ends of the AC current branch detection circuit, the current detection transformer and the electric leakage detection coil and a second relay responsible for conversion work of connecting a mains supply to the socket. According to the invention, no electric shock of people can be realized through the bare socket, a user is ensured to find out the power capacity of the site to the electrical appliances or the electrical appliances in failure as soon as possible; and moreover, the user does not need to perform switching-on operation in case of emergency, and just needs to withdraw the electrical appliances, so that the circuit can return to the condition that the idle socket does not carry the strong current, and the human body safety socket has better practical value.
Owner:FUZHOU UNIV

Spare electric system for precise manufacturing industry and power supply method thereof

The invention discloses a spare electric system for a precise manufacturing industry and a power supply method thereof. The spare electric system comprises diesel generating sets, a commercial power inlet wire device, a dual power supply control cabinet, a low-voltage distribution center, an emergent distribution cabinet, a continuous power supply device, a DC/AC (direct current/alternating current) distribution box, an important IT (information technology) apparatus, a precise machine tool apparatus, a fire fighting system, an illumination system and a lift system which are matched with each other in order to ensure that the important IT apparatus and the precise machine tool apparatus in the precise manufacturing industry out of influence due to the failure or cut-off of commercial power; the power supply mode realizes a continuously power supplying mode; and the electricity safety of the important IT apparatus and the precise machine tool apparatus are ensured. When the commercial power occurs failure or cut-off, the dual power supply control cabinet controls and starts the diesel generating set I; if the diesel generating set fails, the dual power supply control cabinet rapidly starts the dual power supply control cabinet II for power supply, so that the power supply safety and reliability of the whole spare electric system are guaranteed.
Owner:广东康菱动力科技有限公司

Direction-finding system of lift-off interferometer

The invention discloses a direction-finding system of a lift-off interferometer, which comprises direction-finding equipment and hitching equipment used for hitching the direction-finding equipment onto an aircraft. The direction-finding equipment comprises an electronic compass, a direction-finding antenna, a receiver, an X86 processing board, a WiFi module, a WiFi omnidirectional antenna, a GPS module and a GPS antenna. The output end of the GPS antenna is connected with the GPS module. The output end of the GPS module and the output end of the electronic compass are respectively connected with the X86 processing board. The output end of the direction-finding antenna is connected with the receiver. The receiver is connected with the X86 processing board. The X86 processing board is connected with the WiFi module. The WiFi module is in wireless communication with a direction-finding and monitoring terminal on the ground via the WiFi omnidirectional antenna. By means of the direction-finding system of the lift-off interferometer, the positioning function of a GPS and the navigation positioning function of an electronic compass are realized at the same time, so that the complete data collecting, receiving and processing process can be realized. Meanwhile, processed data are transmitted to the direction-finding and monitoring terminal on the ground in the wireless communication manner. Therefore, the real-time performance of the data transmission operation is ensured effectively.
Owner:CHENGDU JIUHUA YUANTONG TECH DEV

Breaker contact performance monitoring method and device and monitoring system

Embodiments of the invention disclose a breaker contact performance monitoring method and device and a monitoring system, and relate to the technical field of power grids. The breaker contact performance monitoring method comprises the following steps of: receiving real-time voltage, acquired by a voltage acquisition device at the current moment, of a wire-in end and a wire-out end at two ends ofa breaker contact; calculating a difference value between the real-time voltage at the current moment and expected voltage at the current moment, and when the difference value is greater than a presetfirst threshold value, determining the current time as an arcing start moment, wherein the expected voltage is determined through a preset voltage calculation manner; continuously calculating and recording real-time voltage changes of adjacent moments, determining a real-time voltage change of each adjacent moment, and if the real-time voltage change rates of continuous preset times of adjacent moments are smaller than a preset second threshold value, determining the current moment as an arcing stop moment; and determining arcing times and deducing health performance of the breaker contact according to each arcing time. Through the breaker contact performance monitoring method and device and the monitoring system, arcing times of contacts can be monitored in real time so as to grasp the health of the contacts in real time, so that important parameters are provided for the state monitor and life estimation of breakers.
Owner:罗孚电气(厦门)有限公司

Electric energy metering and management system for large-scale enterprise

The invention relates to an electric energy metering and management system for a large-scale enterprise. The system comprises a smart cloud computation platform, wherein the smart cloud computation platform is connected with an electric energy metering and management private network of an electricity consumption unit; the electric energy metering and management private network of the electricity consumption unit is connected with a plurality of electricity consumption unit metering and management centers through electric optical fibers; and the smart cloud computation platform accesses to GPRS IP addresses of the electricity consumption unit metering and management centers through the internet, reads electric quantity data and performs computation and control on the electric quantity data to realize electric state real-time monitoring, smart electric operation distribution, smart electric quantity prediction and smart electric fault alarming. According to the system, the enterprise reasonably uses electric energy and performs on-site optimization control on electric energy quality, so that electric consumption accidents and electric energy waste are avoided. A metering and electric energy quality optimization apparatus adopts a GPRS internet-of-things transceiver, can directly access to an IP address of the internet without a GPRS receiving apparatus, realizes the function of internet of things, and is a technical innovation of internet of things.
Owner:ANSHAN POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER COMPANY +2

Circuit breaker

PendingCN110400727ASimple structureSimple and convenient locking operationProtective switch detailsLow voltageEngineering
The present invention relates to the field of low-voltage electrical appliances, and in particular to a circuit breaker. The circuit breaker comprises a circuit breaker shell and a locking mechanism.The locking mechanism comprises a locking piece and an elastic piece, one end of the locking piece is slidingly arranged in the circuit breaker shell and is connected with the circuit breaker shell through the elastic piece, the other end of the locking piece is provided with a locking bulge, and the locking bulge is protruded at the outer side of the circuit breaker shell through a first throughhole arranged in the side wall of the circuit breaker shell; when the circuit breaker is arranged to a circuit breaker assembling position, the shell of the circuit breaker assembling position extrudes the locking bulge to allow the whole locking piece to move in the direction of the internal portion of the circuit breaker shell, and after the circuit breaker assembling position is in place, the elastic piece allow the whole locking piece to move in the direction of the external portion of the circuit breaker shell, and the locking bulge is locked with the shell of the circuit breaker assembling position. The circuit breaker has a simple locking mechanism structure, is simple in locking operation and ensures the reliability of installation of the circuit breaker.
Owner:ZHEJIANG CHINT ELECTRIC CO LTD

Outdoor lighting power distribution cabinet protection controller

The invention discloses an outdoor lighting power distribution cabinet protection controller which belongs to the field of a lighting system. According to the controller, a power supply input end is connected with an MCU control unit on a power supply circuit; a power supply output end of the power supply circuit is connected with an immersion detection circuit and a GPRS remote communication circuit. The signal input end of the MCU control unit is respectively connected with the immersion detection circuit and a voltage sampling circuit. The MCU control unit carries out remote communication with a control center through the GPRS remote communication circuit. The signal output end of the MCU control unit is connected with a relay module which controls on and off of a street light and the power supply of a power distribution cabinet. The signal input end of the MCU control unit is connected with a leakage detection circuit. The leakage detection circuit is provided with a transformer which is used for detecting the current of an input cable of the power distribution cabinet. The power supply circuit is connected with the commercial power. According to the invention, the problem of low power distribution cabinet security is solved; leakage of the power distribution cabinet is avoided; the field security of the power distribution cabinet is improved; and the controller can be used for street light management.
Owner:骐鹏集团有限公司

New energy automobile storage battery electric quantity control system

The invention provides a new energy automobile battery electric quantity control system. The system comprises a storage battery current sampling unit, an output control and sampling unit and a temperature sampling unit, wherein the storage battery current sampling unit is used for collecting current and voltage data of a storage battery, and adjusting a charging current of a charger or closing a DC/DC charger in real time through a microprocessor; the output control and sampling unit is used for controlling the working state of an automotive electrical appliance load and collecting the currentand voltage of the storage battery to electrical load equipment of the whole automobile, and the microprocessor can turn off output or reduce the power output in a PWM mode according to sampling abnormal information; and the temperature sampling unit is used for collecting real-time temperature data of the storage battery and sending the real-time temperature data to the microprocessor, and the microprocessor controls opening and closing of a cooling device according to the real-time temperature data. According to the system, the charging and normal work of the battery are ensured, the DC/DCcharger output power is reduced under the condition of guaranteeing the normal supply of the electric quantity of the storage battery, the charging time of the DC/DC charger is shortened, the reliability of the charger is improved, and the electricity lack caused by continuous discharging of the storage battery is avoided.
Owner:ANHUI ANKAI AUTOMOBILE
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