基于GPS与ZigBee的综合定位系统

Integrated Positioning System based on GPS and ZigBee

老人与残疾人需要在室外活动,一旦出现意外,如果医护人员不能及时赶到,就可能错过最佳的抢救时间。本文提出了由室外GPS定位和室内ZigBee技术定位组成的综合定位系统,在室外室外使用GPS定位而在室内使用ZigBee技术定位,综合两种方法的优点,克服单一方法定位的弊病。对GPS模块定位精度和ZigBee模块定位准确率的验证性实验表明,GPS的定位误差小于5米,ZigBee模块的定位准确率在99%以上,能够保证在突发意外情况时,准确定位病人位置。

The elderly and the disabled always require outdoor activities. In case the ac-cidents occur,the medical staff need to know the position of patients quickly to rescue. In this paper,an integrated positioning system is proposed,which combines GPS and ZigBee location technologies. The system takes the advantages of two methods and overcomes the deficiencies of the single one. The experimental results show that the deviation of GPS is less than 5 [m] and the precision of ZigBee is more than 99%.Hence,the developed positioning system can meet the ap-plication reqiruements.