Lighting system control circuit and corresponding control method

Abstract

The invention relates to a lighting system control circuit and a corresponding control method, the circuit comprises a controller and at least one group of lighting control modules, the power supply end of the controller and the power supply ends of the groups of lighting control modules are connected with a bus, and the grounding end of the controller and the grounding end of each group of lighting control modules are connected with a ground wire; the bus supplies power to the controller and each group of lighting control modules, and information interaction is carried out between the controller and each group of lighting control modules through the bus. By adopting the circuit and the corresponding control method, the circuit structure is simpler, the energy on the bus is fully saved and utilized, the maximum communication time window is provided, the wiring cost is low, the number of nodes is more, the circuit is simpler, the circuit integration degree is high, the peripheral circuit is simple, the area is small, and the cost is low.

Description

technical field [0001] The present invention relates to the field of circuits, in particular to the field of control circuits, in particular to a lighting system control circuit and a corresponding control method. Background technique [0002] With the increase in the number of urban landscape lighting projects, intelligent lighting control systems are becoming more and more important. The intelligent lighting system is mainly composed of lamps, controllers, and host computers. Because of the huge system and the large number of lamps required, the control and management of lamps has become the top priority. [0003] Lamps with control function usually need to be connected with 5 external wires. For example, common lamps using DMX512 communication protocol need to be connected with 5 external wires, including two power lines, two AB communication lines and one ground wire. This wiring method is fine when few lamps are used, but once a lighting system is formed, each lamp ne...

AI Technical Summary

Problems solved by technology

[0008] To sum up, lamps with control function usually need to be connected with 5 external wires, including two power wires, two AB communication wires and one ground wire. high cost, waste of resources

And the AB line is limited by the 485 communication protocol, and can only connect 512 lamps in series at most, with short transmission distance and few nodes

The lighting system needs to connect many external sensors for the service life of the lamps and the judgment of open and short circuits. Each lamp needs more than 3 sensors. Many sensors are required, the cost is high, and resources are wasted.

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