防碰撞低功耗无线监测及智能居住环境

在低功耗便携式无线数据监测系统中,为解决多个监测器同时向中央服务器发送数据而产生相互干扰(碰撞)的问题,通过对系统同步机制、通信周期、中央服务器对监测器的响应时间等问题进行研究和改进,设计了一种基于呼号广播的带查询优先权功能的时分复用反碰撞模型,有效改善了系统通信的响应时间和准确性。利用超低功耗单片机内部资源解决了数据监测前置电路中的A/D转换、数字滤波、液晶显示驱动、声光报警,以及对无线收发模块的待机和工作状态转换控制,降低了系统体积和功耗。介绍了其在智能居住环境监测中的应用。

Anti-Collision Wireless Monitoring and Application in Habitation Environment

In order to improve the response-time and accuracy of communication, avoid the data interfering each other (collision) in wireless monitor system when several transmitters transmit data to the Central Service System (CSS) simultaneously, decrease the pow-er-consumption of the system, two base methods are adopted. One is time-division multiplexing address (TDMA) with the inquiry priority anti-collision model is designed. The other is making use of the super low power-consumption single chip, some pre-treat-ment circuit of wireless data monitoring is taken the place of, such as A/D conversion, digital-filtering, LCD display driving, alarm- ing, as well as the wireless transmit- receive module inactive state and operation state controlling. The conclusions are size and pow-er-consumption of the system have been reduced, the response-time and accuracy of communication is increased. Application in Habitation Environment is introduced