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Exploring Suitable Electrical Elements on Human Detection Sensor Using Electromagnetic Noise
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DOI：10.1109/percomw.2019.8730857.png)
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Abstract
En 中文
To support a human by installing sensor and communication device is widely studied. Human detection is a key technology to trigger such a service. In some cases, the sensor is demanded to be installed into non-electrical object, such as a chair. To make it viable, how electrical power is supplied is problematic. If using commercial electrical power line, the location and mobility of the object are limited. If battery is used, maintenance cost of changing battery arises. Thus, we propose a human detection sensor using electromagnetic noise leaking from commercial power line. This sensor detects a human without electrical power supply, using electromagnetic noise in environment. In past research, basic operation principle is confirmed. However, values of electrical component of the sensor is not explored very well. In this paper, suitable parameters of its CW circuit and antenna are discussed. As a result, it is disclosed that suitable parameter for reverse current of diodes was less than 6 mu A, and capacitance of capacitors was 100 pF. About the size of antenna, the larger output voltage is obtained by the larger size, while the difference of output voltage between presence and non-presence of a human gets smaller. The suitable size of antenna is concluded to be around 30 cm x 40 cm.
Keywords:
human detection
electromagnetic noise
Cockcroft-Walton circuit
commercial power line
electrical element
antenna
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Journal
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IEEE International Conference on Pervasive Computing and Communications Workshops (PerCom Workshops)
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