火车上电报警系统的设计

Design of Sound Alarm System for the Train

本文设计了一种便携智能式火车上电报警装置。该系统以STC89C52单片机为核心,主要由声音采集系统、频域分析系统、声音检测模块、语音芯片模块、扬声器等组成。由两块声音检测模块LM567检测外界声音,如果第一个模块检测到特定频率的声音,同时第二个检测模块在第一个检测之后的延时期内检测到特定声音时,给单片机信号,发出报警信号。

We design a portable intelligent alarm system for the train. By using the STC89C52 single-chip microcomputer as the core, the system includes acquisition system and the frequency domain analysis system, sound detection module, voice chip module and speakers, etc. We use two sound detection modules LM567 to detect the outside voice. If the first module detects a particular frequency of sound, and if the second module detects specific sound signal in a certain delay, the system will send out alarm signal.