Abstract: A good environmental condition of the core computer room is very important for the campus networks. Therefore it is necessary to outfit the environmental monitoring system for the core computer room. But the traditional monitoring systems have some problems: for example the poor flexibility of wiring problems, the high cost and so on. According to this situation, this paper proposes an energy-aware and energy-saving monitoring system for the core computer lab environment by means of wireless sensor networks. The design of WSN nodes adopts the SOC JN5139, the integrated compiling environment adopts open source software-code::blocks. When the node runs, it is controlled by the BOS. At the end, the experiments are done in the core computer room with the nodes, the proper scheme of the nodes distribution and the value of energy-saving transmit power are given, in this way the intelligent monitoring system has the ability to achieve the monitor. At the same time, the monitoring systems can be used in the modern farm and the other environment.

Key words: wireless sensor network, environmental monitoring, node power, energy-saving, energy-aware