精神病人防走失系统特点0.doc

of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of t drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
三、项目研究开发内容及主要创新点
RFID〔无线射频识别，Radio Frequency Identification〕是一种采用射频技术的非接触式自动识别技术。RFID系统基本构成为标签、阅读器和天线三部分，同时在实际应用中还需要相关硬件和软件的支持。RFID给我们带来很多好处，它的优点在于可以无接触的方式实现远距离、多标签甚至在快速移动的状态下进行自动识别。电脑网络技术的发展，尤其是互联网技术的发展使得全球信息传递的即时性得到了基本保证。在此基础上，加上GSM和GPS技术将这两项技术结合起来应用于精神病人标识和自动追踪管理。系统功能示意图如下：
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
GPS/GSM和RFID双模式切换技术
RFID工作模式和GPS/GSM工作模式有两种切换方式，手动切换和自动切换。手动切换是指根据实际需要手动切换工作模式，可通过参数设置进行模式切换；自动切换是指根据信号类型自动切换模式。
RFID工作模式
精神病人在室内或RFID