基于nRF24LE1和百度地图的校园警情定位系统设计

在手机报警受限的情况下,为了使求助者能向校园保卫处紧急报警并且准确定好自己所处的位置,本文研制了求助者随身携带的微型无线遥控器和相应的配套系统。当求助者按下紧急求助按钮时,立即向保卫处发出求助信号,同时在保卫处的监控界面上直观显示求助者所在的位置。测试表明,从求助者按下紧急求助按钮到保卫处页面刷新显示为40~50s,位置精度为20~40m。

Campus Alarm Locating System Based on nRF24LE1 and Baidu Map

In the circumstances of mobile phone alarm limited, in order to call the campus security emergency center for help, the campus security emergency center can accurately determine＇s position, this paper developes a miniature wireless remote caller carry-on and corre sponding system. When the caller presses the emergency button, the signals immediately are sent to the campus security emergency cen- ter, at the same time, in the monitoring interface the caller location isvisually displayed. The test shows that the time from the caller presses the emergency button to monitoring interface refreshes the page display is 40-50 seconds and, the position accuracy is 20-40m meters.