关键词: 热释电红外传感器, MSP430单片机, 报警器, 低功耗

Abstract:

In order to overcome the varying sensitivity of traditional pyroelectric detectors with changing ambient temperature,the low-power MSP430 microcontroller and high performance amplifiers are used t0 collect pyroelectric infrared sensor signal and the ambient temperature signal using efficient software algorithms real-time adjustment alarm sensitivity improvement in external conditions such as temperature changes,the cause of the alarm threshold sensitivity caused by falling or rising volatility issues,making the alarm system more sensitive and stable,thus a more intelligent alarm system.

Key words: pyroelectric infrared sensor;MSP430 MCU;alarm;low power consumption