Research And Design Collection Zigbee Technology Based Multi-point Data

In order to achieve real-time monitoring of temperature and humidity to ensure thatenvironmental information collection and low-power, stability, low cost, the design andstudied with zigbee technology as the core for embedded control systems. The design of thecommunication structure using a star topology, the network consists of a master control nodeand three sensor signal acquisition nodes to achieve the wireless transmission of data. Themain control point is the coordinator of the whole system, which determines the form, theZigBee network is responsible for temperature and humidity data receiving and sendingcommands, and can communicate through the serial port and PC. The sensor signalacquisition node is responsible for completion of the temperature and humidity signalacquisition and transmission, in order to reduce the power consumption and cost, modelDHT11chip as the temperature and humidity sensor. Each sensor node through the microcontroller is connected with the DHT11timing acquisition of temperature and humidity data,and through the ZigBee wireless network technology transfer to the main control node,control node receives data through the serial port communication is sent to the host computer,through analysis and processing, real time display on the monitor interface.Based on the method of modular design of the whole system, which makes the systemhas the flexibility and portability, practicality, stability. This design makes full use of theZigBee strong anti-interference ability, high stability, and done a lot of experiments, theaccuracy and stability have reached the design requirements, the research on ZigBeemulticast communication finished.