Scenic spot bus control circuit

Abstract

The invention relates to an intelligent illuminating system control circuit, in particular to a scenic spot bus control circuit which can simply the communication mode, reduce the bus power consumption and prolong the transmission distance, aiming at the solving the problem of the working failure of the intelligent illuminating system, which is resulted from the unstable voltage of the bus. A first resistor, a third resistor and a voltage stabilizing tube of the scenic spot bus control circuit are connected in series between a bus port and a bus grounding end; the positive electrode of the voltage stabilizing tube is connected with the bus grounding end; a first capacitor is connected with two ends of the third resistor; a signal receiving end is connected with the negative electrode of the voltage stabilizing tube; the collecting electrode of a high-power triode is connected with the bus port, the emitting electrode is connected with the bus grounding end, and the base electrode; a second resistor is connected in series between the base electrode of the high-power triode and a bus signal sending controlling end; the positive electrode of a fast-recovery diode is connected with the bus port; the positive electrode of a polar capacitor is connected with the negative electrode of the fast-recovery diode and the DC power supply of the bus; and the negative electrode of polar capacitor is connected with the bus grounding end.

Description

technical field [0001] The invention relates to an intelligent lighting system, in particular to a bus control circuit of the intelligent lighting system. Background technique [0002] For a distributed bus control system, the smaller the number of bus connection lines, the easier the installation, the lower the cost, and the lower the failure rate; the stronger the anti-interference performance of the bus, the stronger the adaptability to harsh environments. [0003] The 485 communication bus, which has been popular for a long time, is a relatively simple and versatile bus communication method with relatively stable performance compared to other buses. The standard RS-485, as an electrical specification for multi-point and differential data transmission, has become the most widely used in the industry. One of a wide range of standard communication interfaces. However, this bus requires two additional DC power lines. It is a 4-wire bus with power and communication signals s...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a scene bus control circuit, which is beneficial to simplify the communication mode, reduce the power consumption of the bus and prolong the transmission distance, and can be used to solve the problems caused by the instability of the bus voltage in the intelligent lighting system. The problem of system malfunction

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