Research And Development Of Zigbee Based Remote Control And Monitor System

Zigbee wireless sensor network technology is widely used on how to use theInternet to monitor, control and manage the remote monitoring area and it becomes animportant research topic in the field.On the basis of study the zigbee technology in depth, this thesis designed an openand universal remote control and monitor system for the zigbee wireless sensor network,proposed a gateway based on multi-process architecture, the specific research work areas follows:1. Devising the overall structure and network architecture of the remote monitorand control system, identifying the function and design requirements of every module ofthis system, determining the hardware selection and software development platform ofevery module, devising dynamic and expansive up protocol of sensor data and downprotocol of user command.2. Devising and achieving the hardware circuit diagram of sensor nodes and sinknode respectively, including sensors, processors, power management, and the externalinterface circuit. Completing the sensor driver, devising software flowchart andrealizing software functions of sensors and sink node under the Z-Stack framework.3. Building the embedded Linux development environment of gateway, devisingmulti-process software architecture of gateway, including I-Process (the initial process),E-Process (Ethernet interface processes) and Z-Process (Zigbee interfaces processes).Analyzing and devising interprocess communication mechanisms of FIFO and sharedmemory, devising software flow chart of each process, completing the function of eachprocess. 4. Devising the distributed architecture of monitor and control center, accordingto system requirement, completing the design and realization of database tables,achieving database operations under the environment of Linux, and the interaction withgateway through socket. Devising and completing the Web server, the user experience isoptimized through the DOM and AJAX technology, since, the development of remotemonitoring and control center platform is completed.