基于单片机的车内儿童安全分级告警系统设计

Design of Safety Hierarchical Alarm System for Children in Car based on MCU

针对高温天气下儿童长时间被误锁车内而发生危险的情况,设计一款车内儿童安全分级告警系统。系统以STM32F407VET6单片机为核心,采用高冗余度的多传感器融合检测方法。当检测到车辆驻车停止,系统自动启动车内人体检测和车内环境危险度检测,通过设置的多个传感器获取车内信息,单片机对各个传感器数据进行分析和综合判定,最终做出分级决策,并触发分级告警系统,通过GPRS远程警示模块和本地声光告警模块进行分级预警,从而给用户提供安全的用车需求。实验结果证明该系统具有良好的工作稳定性和可靠性,具备较好的实际应用价值。

Aiming at the danger of children being locked in the car by mistake for a long time in high temperature weather,a hierarchical alarm system for children s safety in the car is designed in this paper.The system is based on STM32F407VET6 MCU,and adopts multi-sensor fusion detection method with high redundancy.When the vehicle stops,the system automatically starts the human body detection and environment risk detection in the car.In-vehicle information is obtained through multiple sensors set in car.The single-chip microcomputer,analysis and comprehensively judges the data of each sensor,and then triggers the alarm system.The system uses the GPRS remote warning module and local sound and light alarm module to carry out hierarchical warning,so as to provide users with safe transport demand.The test results indicate that the system has good working stability and reliability,and also it has good practical application value.