硬件电路设计采用了CPLD技术，将一些数字电路环节集成在CPLD芯片中，为系统的小型化、稳定性、抗干扰性、在线修改和升级创造了条件。

CPLD technology is employed to integrate digital circuit in CPLD chip, which is of great usage to the miniaturization, stability, noise immunity and on-line modification and upgrade of the system.

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介绍一种技术性能比较先进的交通信号控制机，这种信号机不仅能够自动地进行多时段控制，还可以接入网络实现在线控制；电路设计采用模块式的电路结构，可根据用户的功能需要增减模块电路。

This paper introduces an advanced traffic signal controller, which can not only implement multi-time block control, but also can be connected with network in order to realize on-line control.

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