Designing of Intellectualized Alarm Equipment Base On One-chip Computer

摘要

Alarm system is a device that gives an alarm. It takes on an important role in ensuring our safety of life and property and eliminating hidden accident. In this paper, intellectualized alarm equipment adopts a small and fast P87LPC762 SCM (Single Chip Micyoco) as the control center. This chip's speed is twice as much as standard 8OC51 SCM. The range of working temperature achieves Industrial standard. Controller put all kinds of detectors at intellectualized disposal. The mode of modulating information is a mode of frequency modulation. Frequency modulation system has a good capability of anti-jamming. Incept circuitry uses tuning fork to filtrate useless frequency to obtain effective signal frequency. Electromagnetic compatible design takes separate in space and electric. It greatly improves delicacy of incept circuitry. This intellectualized alarm equipment has small volume and strong function and low price. It has a good capability/price.