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채용웅(chai yong yoong) 계명대학교 낙동강환경원 2010 環境科學論集 Vol.14 No.1
In this paper, we will describe the inspection of the quantity of water by using the ultrasonic waves and the plan to manage the sensor network by using the ubiquitous with the collected data. The sensor network method described in this paper is not a new concept of the design method, but it will show how we inspect the water quantity by using the existing network and presents a case of a security system constructed to prevent any accidents mentioned above. The ultrasonic waves sensor that is used as a node for the above network contains self-oscillator device ultrasonic waves oscillator and an ultrasonic oscillator which uses a magnetostriction.