Dimming power pack for dimming LED (light-emitting diode) light source
By designing a LED light source dimming power pack that includes a main power supply and a slave power supply, and using 4G and RS485 communication to achieve real-time control of multiple slave power supply, the existing LED dimming power equipment is solved, and low-cost and efficient LED light source regulation is achieved.
Patent Information
- Application Number
- CN202421822347.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-30
AI Technical Summary
The existing LED dimming power supply equipment is costly and the regulation and configuration is complex, so one-to-many overall regulation cannot be achieved, resulting in inconvenient regulation and configuration operation.
A dimming power supply group for dimming LED light source is designed, including a main power supply and several slave power supplies. The main power supply receives wireless remote control signals through the 4G communication unit and conducts wired communication with the slave power supply through the RS485 communication unit to realize real-time control of multiple slave power supplies.
Through the master-slave networking structure, the number of modules in the slave power supply is reduced, the cost is reduced, and the synchronization and reliability of LED light source regulation is ensured, and the regulation and configuration operation is simplified.
Smart Images
Figure CN222916244U_ABST
Abstract
Claims
1. A dimming power supply unit for dimming an LED light source, characterized in that: It includes a main power supply and a plurality of slave power supplies connected to the main power supply in wired communication; The main power supply and the slave power supply respectively include an output unit for outputting the mains power after rectification, filtering and voltage regulation through an output port electrically connected to the light source to be regulated, a control unit for storing data and outputting control signals, a sampling feedback unit for sampling the output voltage of the output unit and comparing it with the control signal of the control unit and then feedback-regulating the output voltage of the output unit, an RS485 communication unit for communication connection with the control unit and bidirectional data transmission, and a timing response unit electrically connected between the control unit and the output port of the output unit; The main power supply also includes a 4G communication unit that is communicatively connected to the control unit and is used to receive wireless remote control signals, and a clock unit that is used to provide a reference clock signal to the control unit.
2. The dimming power supply unit for dimming the LED light source according to claim 1, characterized in that: The output unit includes a rectifier filter circuit, a PWM control circuit, and a voltage conversion output circuit which are electrically connected in sequence.
3. The dimming power supply unit for dimming the LED light source according to claim 2, characterized in that: The PWM control circuit includes a PWM control chip, and the voltage conversion output circuit includes a transformer.
4. The dimming power supply unit for dimming an LED light source according to claim 1, characterized in that: The control unit is a WiFi main control chip with a memory.
5. The dimming power supply unit for dimming the LED light source according to claim 1, characterized in that: The sampling feedback unit comprises a three-port regulator and an optocoupler isolator which are electrically connected in sequence; the input end of the feedback unit is electrically connected to the control pin of the three-port regulator accordingly.
6. The dimming power supply unit for dimming the LED light source according to claim 1, characterized in that: A filtering circuit is provided in the transmission path between the control unit and the sampling feedback unit.
7. The dimming power supply unit for dimming an LED light source according to claim 1, characterized in that: The RS485 module of the master power supply is connected to the RS485 module of the slave power supply through twisted pair communication.
8. The dimming power supply unit for dimming an LED light source according to claim 1, characterized in that: The output end of the output unit is electrically connected to an LDO voltage-stabilized power supply circuit for providing the working voltage of the control unit, and the output end of the output unit of the main power supply is also electrically connected to a DC-DC step-down circuit for providing the working voltage of the 4G communication unit.
9. The dimming power supply unit for dimming an LED light source according to claim 1, characterized in that: The timing response unit includes a MOS tube electrically connected to the output terminal of the output unit and having a gate electrically connected to the control unit.