학술논문
Use of multi-frequency ultrasonic sensors with PIR sensors to enhance the sensing probability of an embedded surveillance system
Document Type
Conference
Author
Source
2010 10th International Symposium on Communications and Information Technologies Communications and Information Technologies (ISCIT), 2010 International Symposium on. :170-175 Oct, 2010
Subject
Language
Abstract
In this paper we design and implement an embedded surveillance system by use of multi-frequency ultrasonic sensors with multiple Pyroelectric Infrared sensors (PIR). The ultrasonic sensor module consists of a transmitter and a receiver which are placed in a line; however, ultrasonic sensors with the same frequency are disturbed by crosstalk with each other and have a high miss rate. To overcome these disadvantages of the ultrasonic sensor, we propose the use of improved multi-frequency ultrasonic sensors. In order to reduce the miss rate, both ultrasonic sensors and PIR sensors are managed by the majority voting mechanism (MVM).