A communication and power supply expansion circuit used for a traffic signal lamp comprises a rectification circuit, a DC filter circuit, a common mode filter circuit, a first switch voltage stabilizing circuit, a first power taking terminal and a second power taking terminal. The rectifying circuit converts an alternating current driving voltage signal into a first voltage direct current and outputs the first voltage direct current to the direct current filter circuit for filtering, the first power taking terminal is used as a first voltage direct current output end of the communication and power supply expansion circuit, and the common-mode filter circuit is used for suppressing an interference signal; the first switch voltage stabilizing circuit is used for converting the first voltage direct current output by the direct current filter circuit into second voltage direct current, and the second power taking terminal is used as a second voltage direct current output end. Since the alternating current is converted into the first voltage direct current and the second voltage direct current for providing the direct current power supply, the communication and power supply expansion circuit can provide power for a plurality of other traffic equipment with different voltage requirements at the same time, and laying of power supply lines is reduced.

    一种用于交通信号灯的通信和供电扩展电路,包括整流电路、直流滤波电路、共模滤波电路、第一开关稳压电路、第一取电端子和第二取电端子。整流电路将交流驱动电压信号转化为第一电压直流电输出给直流滤波电路滤波,第一取电端子用于作为所述通信和供电扩展电路的第一电压直流输出端,共模滤波电路用于抑制干扰信号,第一开关稳压电路用于将直流滤波电路输出的第一电压直流电转化为第二电压直流电,第二取电端子用于作为第二电压直流输出端。由于将交流电转化为第一电压直流电和第二电压直流电,以用于提供直流电源,使得通信和供电扩展电路可以同时向多个不同电压需求的其它交通设备提供电源,进而减少供电线路的铺设。


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    Title :

    Communication and power supply expansion circuit for traffic signal lamp


    Additional title:

    一种用于交通信号灯的通信和供电扩展电路


    Contributors:
    HU LIHUA (author) / LIU GANG (author) / YANG YAJIN (author)

    Publication date :

    2022-05-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS



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