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37 results about "Street light controller" patented technology
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Street light controllers are smarter versions of the mechanical or electronic timers previously used for street light ON-OFF operation. They come with energy conservation options like twilight saving, staggering or dimming. Also many street light controllers come with an astronomical clock for a particular location or a Global Positioning System connection to give the best ON-OFF time and energy saving.
Intelligent road system based on traffic flow dynamic change and illumination adjustment method
The invention discloses an intelligent road system and an illumination adjustment method based on traffic flow dynamic change, and the system comprises a first analysis module which is used for obtaining dynamic data of a target road region, generating real-time traffic flow characteristic parameters, building a first illumination adjustment model based on the real-time traffic flow characteristic parameters, and obtaining a dynamic illumination prediction value; the second analysis module is used for acquiring static data of a target road area, generating road basic characteristic parameters, and constructing a second illumination adjustment model based on the road basic characteristic parameters to obtain a reference illumination predicted value; and the fusion module is used for fusing the dynamic illumination predicted value and the reference illumination predicted value, generating a comprehensive illumination control value and driving a street lamp controller to execute brightness adjustment operation. Illumination can be adjusted in time according to real-time traffic changes, the brightness is dynamically adjusted according to actual requirements, energy consumption waste is avoided, and intelligentization and reliability of the system are achieved.
Owner:SUZHOU VOCATIONAL UNIVERSITY (SUZHOU OPEN UNIVERSITY)
Solar photovoltaic integrated LED street lamp
The utility model provides a solar photovoltaic integrated light-emitting diode (LED) street lamp, which relates to the field of solar LED street lamps and comprises a supporting assembly, the supporting assembly comprises a base, a vertical rod and a lamp holder, and a lighting assembly and a photovoltaic assembly are installed on the surface of the lamp holder. The illumination assembly comprises a protective cover, an LED lamp, a photosensitive sensor, an infrared sensor, a street lamp controller and a brightness regulator, the illumination assembly is used for providing illumination, and the photovoltaic assembly comprises a photovoltaic panel, a solar controller, a storage battery and an inverter; by arranging the photovoltaic panel, the solar controller, the storage battery and the inverter, the effect of providing electric energy for the lighting assembly is achieved, by arranging the lighting assembly, the effect of providing lighting at night is achieved, and by means of cooperation of the photosensitive sensor, the infrared sensor, the street lamp controller and the brightness regulator, the lighting effect is improved. The illumination brightness of the LED lamp can be adjusted in real time, so that the use of electric energy can be reduced, and the energy-saving and environment-friendly effects are achieved.
Owner:JIANGSU OUWEIDA LIGHTING TECHNOLOGY CO LTD
Energy-saving intelligent street lamp and installation method
Owner:YANCHENG JIESHUN TRANSPORTATION TECH CO LTD
Ai based streetlight controller
Owner:JEEVANI SINGIREDDY +4
Outdoor street light controller
Owner:宋永平
Intelligent street lamp control device convenient to install
ActiveCN223872580UEnergy saving control techniquesSupport structure mountingControl engineeringStreet light controller
The utility model provides an intelligent street lamp control device convenient to install, and relates to the technical field of street lamp controllers, the intelligent street lamp control device comprises a case frame and a controller body, the rear inner wall of the case frame is fixedly connected with a fixed heat dissipation base, the front face of the fixed heat dissipation base is provided with an air outlet, and the upper end of the fixed heat dissipation base is provided with an air inlet notch; heat dissipation fans are fixedly installed on the inner walls of the two sides of the fixed heat dissipation base, a convenient locking mechanism is arranged on the front face of the fixed heat dissipation base, the convenient locking mechanism comprises a fixing block, and through the convenient locking mechanism, the controller body is preliminarily installed and positioned through a positioning sleeve and a positioning rod; and then the inclined plane inserting blocks are driven by the supporting springs to be inserted into the limiting through grooves for further mounting and fixing, in the dismounting process, only the two pressing blocks need to be pressed, the controller body is horizontally moved and pulled out, dismounting can be completed, operation is convenient, and the effect of greatly improving the later maintenance dismounting efficiency is achieved.
Owner:SICHUAN SHIYUE LIGHTING TECH CO LTD
An installation structure for an LED energy storage street light controller
This utility model discloses an installation structure for an LED energy storage street light controller, relating to the field of street light structures. The installation structure includes a controller mounting plate fixedly connected to the controller, a docking plate fixedly connected to the controller mounting plate, and a protective frame on the docking plate. During controller installation, the installation structure utilizes a limiting rod for guiding blind insertion and positioning, and a locking unit for quick and secure installation and locking of the controller in the installation position. During the locking process, the clamping component automatically crimps the cable, eliminating the need for separate bundling. Compared to cable ties, the clamping component provides better clamping effect, better cable protection, reduces cable wear, and extends cable life, ensuring stable long-term use of the controller. Subsequent controller maintenance allows for convenient and quick disassembly and maintenance, meeting usage requirements.
Owner:JIANGYIN HUAHUIYUAN ELECTRONIC TECH CO LTD
Multi-protocol fusion intelligent street lamp management method and system
The invention provides a multi-protocol fusion intelligent street lamp management method and system. The method comprises the steps that street lamp controllers of different communication protocols are connected to a data receiving and processing platform; after the reported data arrives at the data receiving and processing platform, the data receiving and processing platform distinguishes the types of various street lamp controllers according to reported themes; various different communication protocols are uniformly converted into a uniform protocol format, and report data of various street lamp controllers are stored in the uniform format; when data needing to be issued arrives at the data receiving and processing platform, the data receiving and processing platform distinguishes the types of various street lamp controllers according to issuing themes and analyzes and processes protocol data in a unified format into different protocols of the street lamp controllers; after the data protocol is processed, data are issued to the street lamp controller through different communication protocols; according to the invention, street lamp controllers or integrated controllers with different communication schemes and different communication protocols can be compatible and accessed, and one-network unified management of street lamp management under the current situation of multi-protocol communication of street lamps is realized.
Owner:KINGSUN OPTOELECTRONIC CO LTD
A smart street lamp management system and control method thereof
ActiveCN115623642BElectrical apparatusEnergy saving control techniquesCommunication unitStreet light controller
The present application discloses a smart street light management system and a control method thereof, the system comprising: a plurality of street lights arranged in sequence along the length of a road; a cloud-based street light operation and maintenance center server; a plurality of smart street light controllers corresponding one to one with the plurality of street lights, each smart street light controller being installed on a corresponding street light; each smart street light controller comprising a main control unit, a photosensitive unit, a power meter, a radar sensor, a dimming unit and a communication unit; a routing table is pre-stored in the main control unit, the routing table comprising the communication address and distance of the main control units of two adjacent smart street light controllers. Through the smart street light management system and method provided by the embodiment of the present application, the smart street light management system can be controlled in different control modes in different time periods; in the smart energy-saving control mode, the present application can automatically provide lighting for driving vehicles, comprehensively consider the driving speed, and dynamically and step-by-step adjust the brightness of the street lights within a preset distance threshold ahead.
Owner:金茂云科技服务(北京)有限公司
Controller structure for street light
ActiveCN224316095UElectric circuit arrangementsOutdoor lightingElectrical connectionStreet light controller
This utility model relates to the field of street light control technology, specifically a street light controller structure, including a back plate installed inside the street light pole. A controller body is snapped onto the front surface of the back plate, and a wiring terminal is fixedly connected to the front surface of the controller body. An installation module is provided on the front surface of the back plate, comprising a mounting bracket and a limiting frame. The mounting bracket is fixedly connected to the front surface of the back plate, and a screw is threaded onto the front surface of the mounting bracket. The limiting frame is fixedly connected to the front surface of the mounting bracket. In this utility model, the rubber seat can compress and limit external wires, preventing the wires electrically connected to the same wiring terminal from being pulled during maintenance of other items. Furthermore, during disassembly, only the insertion post needs to be loosened; there is no need to disassemble screws or other threaded components, thus eliminating the need to carry and replace threaded components, reducing the burden of carrying too many parts during maintenance, and decreasing the pressure of later repairs.
Owner:HEFEI QIANYUAN KUNHE TECHNOLOGY CO LTD
Intelligent street lamp management system
PendingCN119584397AElectrical apparatusEnergy saving control techniquesControl signalControl engineering
The invention discloses an intelligent street lamp management system, which comprises an intelligent street lamp, a street lamp controller and an artificial intelligence control module, and is characterized in that the street lamp controller is in communication connection with the intelligent street lamp and the artificial intelligence control module; the artificial intelligence control module is used for receiving the control request and sending a control signal to the street lamp controller according to the environment parameters of the intelligent street lamp and the control request; the street lamp controller is used for controlling the intelligent street lamp to illuminate according to the control signal. The intelligent street lamp management system controls the intelligent street lamp to illuminate according to the environment parameters of the intelligent street lamp and the control request, so that the intelligent street lamp emits light according to the environment parameters, the power consumption waste of the intelligent street lamp can be reduced, and the energy consumption utilization rate of the intelligent street lamp system can be improved.
Owner:SIGNIFY HOLDING BV
Street lamp controller convenient to disassemble and assemble
ActiveCN223375721UElectric circuit arrangementsOutdoor lightingSolar street lightStreet light controller
The utility model belongs to the technical field of disassembly and assembly of solar street lamp controllers, and particularly relates to a street lamp controller convenient to disassemble and assemble, which comprises a controller main body used for controlling a street lamp; the street lamp pole is of a hollow structure, the controller body is arranged in the street lamp pole, an operation hole is formed in the outer side of the street lamp pole, and a hole cover is rotationally installed on the outer side of the operation hole through a hinge; the supporting mechanism is installed on the inner wall of the street lamp pole and used for supporting the controller body; and the fixing mechanism is arranged on the supporting mechanism and used for fixing the controller body and guaranteeing the stability of the controller body, the supporting mechanism comprises a supporting plate and a telescopic plate, and the supporting plate is fixedly installed on the inner wall of the street lamp pole. The controller body is arranged on the bottom side of the street lamp pole, the controller body can be operated conveniently in a push-pull mode, and meanwhile the controller body can be disassembled and assembled rapidly.
Owner:HUAYONG LIGHTING TECH CO LTD
Integrated gateway for matrix communication
The utility model discloses an integrated gateway for matrix communication, which is arranged in a street lamp controller case and comprises a low-voltage power supply module, a high-voltage power supply module, a central processor module MCU (Microprogrammed Control Unit), a 4G Cat1 communication module and a Bluetooth communication module, the MCU is directly connected with the 4G Cat1 wireless communication module and the Bluetooth wireless communication module respectively; the MCU performs two-way communication with a cloud server through the 4G Cat1 wireless communication module; the MCU is in bidirectional communication connection with each adjacent street lamp controller through the Bluetooth wireless communication module; the low-voltage power supply module is connected with a low-voltage power supply system of the street lamp controller, the high-voltage power supply module is connected with a high-voltage power supply system of the street lamp controller, and input voltage ends and output voltage ends of the low-voltage power supply module and the high-voltage power supply module are connected to input terminals of the MCU and used for monitoring a power supply state.
Owner:BEIJING REMOTE POWER RENEWABLE ENERGY TECH
Control of street lights to indicate priority routes in smart cities
Various embodiments relate to techniques for using street lights to indicate emergency or other priority routes along a route in a network of streets. In one example, a controller determines a plurality of street lights along a priority route for one or more vehicles and transmits, to respective street light controllers associated with the plurality of street lights, respective instructions to operate the plurality of street lights in a priority route mode, wherein a street light operating in the priority route mode is visually distinct from the street light operating in an illumination mode used to illuminate areas around the street light.
Owner:ITRON INC
Intelligent street lamp distributed light storage micro-grid energy scheduling and power grid interaction method and system
The application discloses a kind of wisdom street lamp distributed light storage microgrid energy scheduling and power grid interaction method and system, it is related to distributed light storage microgrid energy management technical field, to solve the technical problem of unreasonable charging capacity distribution in the process of current old community street lamp energy storage charging, including street lamp controller according to residual power, residual duration and health state calculate charging urgency, and broadcast charging urgency to adjacent street lamp controller, each street lamp controller sorts and compares charging urgency of itself with received charging urgency of adjacent street lamp controller, if the charging urgency of itself is highest, then obtain current charging authority, otherwise, postpone charging.The application realizes the self-organizing distribution of charging authority between multiple street lamp energy storage units, each node sorts by comparing the charging urgency of itself and adjacent node, the node with the highest urgency starts charging, which ensures that the street lamp node with the lowest residual power and the narrowest available charging window is given priority to energy supplement.
Owner:YANGZHOU BAOJINSHENG ENERGY SAVING TECH CO LTD
An LED street lamp lighting intensity control device
The present invention relates to the technical field of LED street lamp controllers, and specifically relates to an LED street lamp illumination intensity control device, including a body. A display screen is installed on the surface of the body, buttons are installed on the surface of the body, an antenna is installed on the upper surface of the body, mounting holes are provided on the surface of the body, and a wiring device is arranged on the surface of the body. The wiring device includes a wiring groove which is formed on the surface of the body. An installation groove is provided on the lower surface of the body, and the installation groove communicates with the wiring groove. A cavity is formed inside the body, and a carrier plate is slidably connected in the cavity. A cutting knife is fixedly connected to the lower surface of the carrier plate, and one end of the cutting knife is inserted into the wiring groove. In the present invention, the wiring structure of the device is effectively improved, and installation and connection can be carried out in the state where the wire is not peeled, reducing the workload of maintenance personnel, facilitating the installation, inspection and repair operations of a large number of street lamps, and ensuring the normal use of the device.
Owner:JIANGSU HENGPENG ELECTRIC GRP CO LTD
Communication gateway integrated with street lamp controller
The invention discloses a communication gateway integrated with a street lamp controller, which comprises a gateway base and a gateway shell, and is characterized in that the gateway shell is arranged on the gateway base and is perpendicular to the gateway base to form a closed accommodating cavity, and a gateway control panel, a lamp control panel, a power panel and a metering panel are arranged in the accommodating cavity; the gateway control panel comprises a master control MCU, a communication module, a GPS module, a storage module and a clock module. The main control MCU is electrically connected with the communication module, the GPS module, the storage module and the clock module. The power supply board supplies power to the gateway control board, the lamp control board and the metering board. According to the invention, the technical problems of integration of the gateway and the street lamp controller and remote control and data acquisition of the street lamp controller through the gateway are solved.
Owner:HUNAN TENGFA MICROELECTRONICS CO LTD
Intelligent street lamp controller
The invention relates to the technical field of street lamp controllers, in particular to an intelligent street lamp controller which is based on the 4GCat.1 technology and comprises a main control system, an AC-DC isolation switch power supply, a real-time clock chip, a dimming circuit module, a leakage voltage / leakage current sampling circuit module and a three-axis acceleration detection circuit which are integrated on a main control core board. The shell is internally filled with heat-conducting glue and heat-conducting silicone grease, compared with traditional LoRa and NB-IoT, the coverage range is wider (a lamp pole metal box can be penetrated), the rate is higher (real-time waveform uploading is supported), and it is ensured that the online rate of a single lamp is larger than or equal to 99.5% through a double-backup SIM card and a dynamic heartbeat mechanism; a communication response time lt; and the remote emergency control requirement (for example, a lamp is turned on immediately when an accident occurs) is met, and the system is adaptive to multi-scene lighting networks of urban roads, parks, tunnels and the like.
Owner:CHANGZHOU JIARUI ELECTRIC APPLIANCE CO LTD
Highway OTFS transmission module street lamp method and system
PendingCN119676919AImprove stabilityImprove real-time performanceNetwork topologiesLighting elementsControl signalStreet light controller
The invention relates to the technical field of wireless communication, and particularly provides an expressway OTFS transmission module street lamp method and system, the system comprises a plurality of street lamps, each street lamp is provided with an indication board, a control terminal and a monitoring and dispatching center in communication connection with the control terminal, and the monitoring and dispatching center is connected with each street lamp through a ZigBee network; the street lamp controllers transmit states of the street lamps and the indication boards to the monitoring and dispatching center, the monitoring and dispatching center obtains working states of the street lamps and the indication boards, the control terminal sends control signals to the street lamp controllers through the monitoring and dispatching center, and the controllers on the street lamps execute corresponding operations according to the received control signals. Compared with the prior art, the system can significantly improve the stability of data transmission and the real-time performance of expressway monitoring, comprehensively monitor the road state and meteorological changes, achieve the quick response to emergency situations, effectively guarantee the traffic safety and smoothness of the expressway, and improve the traffic management efficiency.
Owner:浪潮智慧城市科技有限公司
Street light controller and video surveillance system
Disclosed is a street light controller and concealed video surveillance system having an optical zoom lens mounted in a lamp head for securement to a modern street light having a NEMA socket. The video surveillance device is a single, compact unit consisting of a 10× zoom camera with an internal recorder, cellular modem, and a video compressor. The video compressor with a modem and recorder allows for live video from an optical zoom lens, which can be transferred across a cellular network at bitrates down to as low as 10 kbps.
Owner:SPECIAL SERVICES GROUP LLC
Street lamp intelligent controller
ActiveCN222827398UElectrical apparatusEnergy saving control techniquesControl engineeringStreet light controller
The utility model discloses an intelligent controller for a street lamp, and the controller comprises a main control module which is used for collecting the electric power parameters, the operation state, and the abnormal state of the street lamp in the working process; the stepless dimming module is used for outputting a PWM (Pulse Width Modulation) or DAC (Digital-to-Analog Converter) signal through the main control module to control the brightness of the streetlamp; the inclination monitoring module is used for monitoring the inclination state of the street lamp post and sending monitoring data to the main control module; and the power supply module comprises a linear power supply and a back-up power supply, the linear power supply is used for providing a direct-current power supply for the system, and the back-up power supply provides temporary power when the linear power supply breaks down or is interrupted. According to the intelligent street lamp controller, an innovative solution is provided for modern urban lighting management due to the characteristics of high efficiency, energy conservation, intelligence and reliability, and the intelligent level of urban infrastructures can be improved.
Owner:ZHENGZHOU MAFEI ELECTRONIC TECH CO LTD
A communication gateway integrated with a street light controller
The utility model discloses a kind of communication gateway of integrated street lamp controller, comprising: gateway base and gateway shell, the gateway shell is placed on the gateway base, and it is vertically arranged with the gateway base, form closed containing cavity, gateway control panel, lamp control panel, power board and metering board are equipped in the containing cavity;The gateway control panel includes main control MCU, communication module, GPS module, storage module and clock module;The main control MCU is electrically connected with communication module, GPS module, storage module and clock module respectively;The power board provides power supply for the gateway control panel, lamp control panel and metering board respectively;The communication gateway of integrated street lamp controller is installed on lamp pole.The utility model solves how to realize the technical problem of gateway and street lamp controller integration, and realizes the remote control and data acquisition of street lamp controller by gateway.
Owner:HUNAN TENGFA MICROELECTRONICS CO LTD
Street light controller with microwave transmission
Disclosed is a street light controller and concealed video surveillance system having a zoom lens mounted in a lamp head for securement to a modern street light having a NEMA socket. The video surveillance device is a single, compact unit consisting of a zoom camera with an internal recorder, microwave radio, and a control processor. The control processor allows for live video from a zoom camera, which can be transferred across a microwave network.
Owner:SPECIAL SERVICES GROUP LLC
Street lamp controller
ActiveCN224083751UElectrical apparatusEnergy saving control techniquesCommunication unitControl signal
The utility model relates to a street lamp control device, and discloses a street lamp controller, which comprises a power supply unit, a communication unit, a master control single chip microcomputer unit and street lamp equipment, and further comprises a detection unit, and the power supply unit is used for supplying power to the master control single chip microcomputer unit, the communication unit and the detection unit; the communication unit is used for carrying out communication on an input signal and transmitting the input signal to the main control single chip microcomputer unit; the main control single chip microcomputer unit is used for processing the received signal and feeding back a control signal to the street lamp equipment; the detection unit is used for detecting street lamp equipment and transmitting a detected signal to the master control single-chip microcomputer unit. The street lamp controller is detected through the detection unit, so that failure problem points can be accurately judged, and the maintenance period is shortened; and a remote software platform can be connected, maintenance personnel can be quickly informed of failure problems, the maintenance burden of the maintenance personnel is relieved, and the maintenance efficiency is improved.
Owner:HANGZHOU EBOYLAMP ELECTRONICS CO LTD
LoRaWAN street lamp controller, communication system and communication method
The invention is applicable to the technical field of Internet of Things communication, and relates to a LoRaWAN street lamp controller, a communication system and a communication method, and the LoRaWAN street lamp controller comprises a main control unit, an electric energy metering unit, a power supply and power supply management unit, a sensing and positioning unit, a control and execution unit, a storage unit and a communication mechanism unit. On the premise that other chip hardware is not added, an existing LoRaWAN chip is utilized, communication between the LoRaWAN equipment and the LoRaWAN gateway is achieved through optimization of a communication mechanism, meanwhile, communication between the LoRaWAN equipment and the controller can be achieved, the local maintenance capacity of the LoRaWAN equipment is greatly improved, and the problem that in the prior art, LoRaWAN street lamp equipment does not have the capacity of communicating with the local controller, and the LoRaWAN street lamp equipment cannot communicate with the local controller is solved. The communication cost is relatively high; and the design complexity is relatively high.
Owner:HUNAN TENGFA MICROELECTRONICS CO LTD
LED intelligent street lamp controller
ActiveCN222827390UElectrical apparatusEnergy saving control techniquesCommunication unitSupply management
The utility model relates to an LED intelligent street lamp controller, which comprises a power supply management unit, a signal output unit, a single-chip microcomputer, an address management unit and a communication unit, the signal end of the single-chip microcomputer is respectively connected with the signal end of the address management unit and the signal end of the communication unit, and the signal end of the communication unit is connected with an external CAT4 edge gateway; the signal end of the single-chip microcomputer is also connected with the signal output unit. The signal output unit is connected with an external constant-current dimming power supply. The input end of the power management unit is connected with the constant-current dimming power supply, and the output end of the power management unit is connected with the single-chip microcomputer. Compared with the prior art, brightness adjustment is facilitated, and energy consumption is reduced; stable transition of street lamp brightness can be achieved, potential safety hazards are reduced, and the service life is effectively prolonged.
Owner:GUILIN HIVISION TECH CO LTD
Ad hoc network single lamp control system
ActiveCN222674546UElectrical apparatusEnergy saving control techniquesVoltage regulationStreet light controller
The utility model discloses an ad hoc network single lamp control system, and aims to solve the problems of poor monitoring and management effect, high cost and large energy consumption of traditional street lamp control. The system comprises a plurality of single lamp controllers which are respectively arranged in lamp poles and are used for controlling corresponding street lamps, a three-phase street lamp controller which is correspondingly and electrically connected with the plurality of single lamp controllers and is used for on-off control and electric energy collection of the corresponding single lamp controllers, and a server which is in wireless communication connection with the three-phase street lamp controller or the corresponding single lamp controllers, the client is in corresponding communication connection with the server; each single lamp controller comprises a switching power supply module, a voltage reduction and stabilization module and a Bluetooth control module which are correspondingly and electrically connected in sequence, as well as a wireless communication module, a clock module, an electric energy acquisition module and a voltage regulation module which are correspondingly and electrically connected with the Bluetooth control module respectively, and the voltage regulation module is used for regulating the light brightness. The system can realize remote networking control and timely fault alarm, and has the advantages of high management efficiency, low management cost, energy conservation and the like.
Owner:LUOHE HONGHUANGLAN EIECTRONIC TECH CO LTD
Intelligent street light controller
Owner:李耀东
Street light controller
1. The name of the design product: street light controller. 2. The use of the design product: for street light switch and other strategy control. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view 1.
Owner:SHENZHEN LUODING PHOTOELECTRIC TECH
Solar street lamp controller and control method thereof
PendingCN122269543APhotovoltaic monitoringBatteries circuit arrangementsElectrical batteryRemote control
This invention relates to the field of solar street light technology and discloses a solar street light controller, comprising a main control circuit and a sub-control circuit that are separated from each other. The main control circuit includes a main control MCU, a photovoltaic panel detection circuit, a battery voltage detection circuit, a charging control circuit, a load control circuit, an overcharge protection circuit, and an over-discharge protection circuit. The sub-control circuit includes a sub-control MCU, a battery power display circuit, a motion sensing circuit, and a remote control signal receiving circuit. The sub-control MCU and the main control MCU are connected via signal lines. The main control circuit and the sub-control circuit of this solar street light controller are independent of each other. Even if the sub-control circuit malfunctions, such as abnormal remote control signal reception or false triggering of motion sensing, it will not affect the main control circuit's control of the street light's basic charging, discharging, and protection functions, and vice versa. This separation design reduces the risk of system failure due to a single point of failure. Simultaneously, it allows for on-demand lighting, maximizing energy savings and extending the operating range during cloudy and rainy days.
Owner:ZHONGSHAN JINFENG YOUNENG OPTOELECTRONICS CO LTD