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Design of Toxic Gas Monitoring System Based on Virtual Technology and WSN

This paper took wireless sensor network (WSN) as the data transmission way and used the LabVIEW platform, and design multifunctional virtual instrument system with signal acquisition, demonstration, analysis, storage and the historical data inquiry to implement remote operation of gas monitoring.In terms of hardware design, the wireless sensor nodes and radio frequency circuit were mainly designed, and in terms of software design, the wireless communication procedures and LabVIEW program were mainly designed. The data of measured objects were collected in real time by wireless sensor nodes, and were sent to wireless main nodes through the ZigBee wireless technology. The wireless main nodes received data of all wireless sensor nodes, and the data are encapsulated into USB package and submitted to PC, then were processed through LabVIEW platform. The system was characterized with its low power consumption, high precision, simple design, convenient operation, friendly interface and good reliability.