Lighting circuit system based on RS485 bus

Abstract

The invention provides a lighting circuit system based on an RS485 bus, and the system is suitable for the field of electrical lighting. According to the circuit system, an RS485 bus is used for transmission, an STC89C52 single-chip microcomputer is used as a main controller, master and slave nodes are connected through an RS485 bus interface to carry out communication control, the main node displays a lighting condition and setting information of each slave node field in real time, the slave nodes display a lighting real-time condition and setting information of a corresponding field and controls a relay circuit module according to the setting information, and thus the lighting state of a field circuit lighting system is controlled. The functions of real-time display and monitoring, timing setting and the like of a lighting circuit field node lighting condition are achieved. The theoretical value of a transmission control distance can reach 1219 meters, and the practicality is high. At the same time, a differential transmission method is used by an RS485 bus, the anti-interference performance is strong, the protocol design is simple, the design cost is low, the functions are complete, the operation is simple and practical, and the promotion performance and practical application are high.

Description

technical field [0001] The invention relates to a lighting circuit system based on an RS485 bus, which is suitable for the field of electric lighting. Background technique [0002] The shortage of energy has always been a worldwide problem, and it is still the same today. Electric energy is one of the energy sources that we use the most at present. However, the utilization rate of electric energy is not high. On the contrary, when the utilization rate is not high, it is still There are a lot of waste caused by unreasonable control system or unscientific management. [0003] With the rapid development of science and technology, the functions of modern buildings are becoming more and more complex, and the quality is constantly improving, which puts forward higher requirements for the functions of electrical installation systems. Traditional control and wiring methods often require laying a large number of wires, forming more and more The complex electrical installation system...

AI Technical Summary

Problems solved by technology

However, for a long time, intelligent lighting has been neglected in China. Most buildings still use traditional lighting control methods. Some intelligent buildings use building automation (BA9 system) to monitor lighting, but only simple area lighting and timing switch functions can be realized.

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