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1·This paper introduced the design purpose and working principle of Model JY Train Approaching Announciator and analyzed the features of the system.

介绍了JY型列车接近语言预警机的软、硬件设计和工作原理，并对其技术特点进行了分析。

2·Voice call the police briefness safety dependable possesses battery capacity lack sensor damage warning can timely remind consumer to announciator proceed maintain.

声音报警，简单、安全、可靠具有电池容量不足、传感器损坏警告，可及时提醒用户对报警器进行维护。