超低功耗高精度超声测距报警系统研究

Study of Ultra Low Power Consumption and High Precision Ultrasonic Distance Measurement and Alarm

为了降低车载测距报警系统的能耗以及提高车载测距系统的测量精度问题,本文研究了基于MSP430F149超低功耗单片机的超声测距报警系统。根据渡越原理,采用MSP430F149超低功耗单片机为主控器,利用超声波具有很强的传播能力,指向性强,能量消耗的比较缓慢等特点,设计出了具有低功耗的超声测距报警系统,并基于Kalman算法提高测距的精度。

In order to reduce the energy consumption and improve the measuring precision of vehicle distance measurement and alarm system, this paper studies the alarm system of ultrasonic ranging MSP430F149 ultra low power microcontroller, which is based on MCU. According the time of flight principle, the controller is using the MSP430F149.and relying on the ultrasonic wave having strong communication ability, direction and slow consumption of energy, the ultrasonic measurement and alarm system are desigred, and improves the ranging precision based on the Kalman algorithm.