本文主要设计了一种以超低功耗单片机MSP430G2855 为控制芯片的摩托车报警器，通过云服务器、手机APP 和报警器中的GPRS模块构建物联网。振动传感器和超声波传感器协同工作，振动传感器未检测到信号时，超声波传感器不 工作，降低了功耗，同时，超声波传感器用于判别是否有人靠近，降低了误报的概率。基于物联网，用户通过手机APP可实现对 于误报情况的处理，以及对于被盗摩托车的追踪。

This paper mainly discusses on the design of the motorcycle alarm with an ultra- low power single- chip MSP430G2855 for the control chip. The Internet of things is built through cloud server, mobile phone APP, and the GPRS module of alarm. With cooperative work of vibration sensor and ultrasonic sensor, the ultrasonic sensor doesn’t work to reduce power consumption if the vibration sensor detects no signal. At the same time, ultrasonic sensor is used to distinguish whether someone is approaching, reducing the probability of false alarm. Based on the Internet of things, users can handle false alarm signal through mobile phone APP and track stolen motorcycles.