This Scenic area has large traffic volume and complex environment and some scenic areas need to be protected. So developing an air quality monitoring system is very important. In this paper, the temperature sensor, the PM2.5 sensor and the wireless transmission module were combined by the MCU. It monitors the spot in PM2.5 concentration and the temperature information. When the PM2.5 concentration is higher than the threshold, the wireless transmission module sends the warning signal. So the
International Journal of Advanced Network, Monitoring and Controls , ISSUE 2, 71–74
International Journal of Advanced Network, Monitoring and Controls , ISSUE 1, 35–38
group of sensor nodes, some sink nodes, and a data centre. The sensor nodes are connected to the sink node, which is connected to a data centre through CDMA or General Packet Radio Service (GPRS) technologies. In order to improve the reliability of wireless transmission, retransmission and redundant path are discussed. The system has been tested for half a year and satisfactory results have been observed, which indicate that this system is useful for urban rail vehicle monitoring.
International Journal on Smart Sensing and Intelligent Systems , ISSUE 4, 1822–1839
supports the use of multiple network communication technologies. Ability to access multiple wireless technologies. Greatly expanded the functions of wireless communication technology. 5G communication has good compatibility and solves problems such as system instability. Especially in the aspect of network payment, the security of payment is greatly improved.
The core technology of 5G wireless communication technology
Wireless transmission and network architecture technology
In order to
International Journal of Advanced Network, Monitoring and Controls , ISSUE 2, 86–92