利用脉频信号实现的多点模拟量监测系统

Multi-Point Analogous Monitoring System Utilizing Pulse Frequency Signal

简要介绍利用脉频信号实现多点模拟量监测的一种实用系统。该系统构思新颖，实用而经济，且由于使用双音调信号及脉频信号实现模拟量的采集与传输，使系统具有优良的抗干扰能力及可靠性。

This paper briefly introduced a practical system utilizing pulse frequency signal to achieve multipoint analogous monitoring. The system is original in conception, practical and economic. Due to the use of dual tone signal and pulse frequency signal for achieving acquisition and transmission of analogues, the system has the capability of good anti-inteference and high reliability. It is most suitable for use in factory or mine site with random interfernce sources.