一种新型调车信号机灯丝转换报警电路

针对传统调车信号机灯丝转换报警电路存在不能实时监测副灯丝状态、报警显示不能精确到具体故障灯位等缺点,提出一种新型调车信号机灯丝转换报警方法。采用单片机作为中心控制器、电压互感器为监测元件、电压跟随器和反相比较器组成断丝信号处理电路、RS-485总线为报警信号传输电路。该方法与传统电路相比增加了灯丝暖丝电路、故障灯位显示和故障信号处理电路,提高电路性能,降低电路成本,增强电路的实用性。

A New Type of Shunting Signal Filament Conversion Alarm Circuit

In the light of the deficiencies in a filament conversion alarm circuit of traditional shunting signal, such as being unable to monitor the status of auxiliary filament in a real time manner and being unable to accurately indicate the specific fault lights in alarm display, we presents a new kind of filament conversion alarm method for shunting signal, which uses single-chip machine as main controller, a voltage transformer as monitoring unit, a voltage follower and inverting comparator as a alarm channel of bro- ken wire, RS-485 bus as the pathway of broken wires alarm signal and the main controller. Compared with the traditional system, the heating filament wire circuit and broken light place indication and failure signal handling circuits are added to the new system, enhancing the performance of the circuit, reducing the cost on the circuit, and improving the practicality of the circuit.