%0 Journal Article
	%A Jung-Ho Moon and  Myung-Gon Yoon and  Tae Kwon Ha
	%D 2014
	%J International Journal of Computer and Information Engineering
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 90, 2014
	%T A Wireless Sensor Network Protocol for a Car Parking Space Monitoring System
	%U https://publications.waset.org/pdf/9998513
	%V 90
	%X This paper presents a wireless sensor network protocol for a car parking monitoring system. A wireless sensor network for the purpose is composed of multiple sensor nodes, a sink node, a gateway, and a server. Each of the sensor nodes is equipped with a 3-axis AMR sensor and deployed in the center of a parking space. The sensor node reads its sensor values periodically and transmits the data to the sink node if the current and immediate past sensor values show a difference exceeding a threshold value. The operations of the sink and sensor nodes are described in detail along with flow diagrams. The protocol allows a low-duty cycle operation of the sensor nodes and a flexible adjustment of the threshold value used by the sensor nodes.

	%P 957 - 960