独居老人行动分析及异常报警系统的电路设计

The Circuit Design of an Alarm System for the Old Solitary Man Based on Daily Life

以DS1302作为系统时钟,小时为单位,对独居老人的活动进行监测。通过设置在住所中的传感器组获取老人的活动数据,每一个小时由89系列单片机对老人的活动进行一次判别。当活动出现异常时,系统拨打预先存贮在EEPROM中的电话号码,待对方接通后,发送语音报警。如果突然发病或发生其它意外,可以使用随身携带的微型遥控器直接启动报警。外出时,可以通过遥控器使系统转换为防盗报警状态,在模拟实验条件下,系统较好地识别了活动信息,误报率低,为解决独居老人无人照顾的杜会问题提供了可行的方法。

The system with DS1302 as its clock makes one hour as one basic time unit,and thus there will be 24 monitoring segments in a day. It watches the movements of the aged through the sensors placed in the house-rooms such as bedroom, kitchen ,and obtains the data of the movements and activities. Based on the data the MCU (Micro Control Unit) will make an hourly judgment whether the movements and activities are normal ones. When the system makes sure they are abnormal,it will dial out the setting telephone saved in EEPROM, waiting for the other end to pick up phone and then will send the tone alarm out. Once an accident happens, the alarm will be started up immediately by pressing the emergency button of the remote control. When the aged is out, he or she can shift the health mode to the away mode by the remote control, and the system will act as a home security system. In simulation experiments, the system works well at recognizing the data of movements and has a very low mis-alarm ratio. The system provides a viable solution to the social problem of looking after the aged who lives alone.