3D human proximity sensor based on the AC hum effect

Elfekey, Hatem; Maximous, George S.; Bastawrous, Hany Ayad

doi:10.1109/gcce.2016.7800532

Cited by 3 publications

(1 citation statement)

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“…Moreover, the implemented keyboard has many desirable features: it is highly flexible, it is shock-, dust-, and water-resistant, and last but foremost it has very low implementation and operation costs. Taking into consideration that the proposed touch technique is passive and does not therefore require external generators, other possible important applications may include touch floors and safety sensors [37,38,39]. …”

Section: Discussionmentioning

confidence: 99%

A Touch Sensing Technique Using the Effects of Extremely Low Frequency Fields on the Human Body

Elfekey

Bastawrous

Okamoto

2016

Sensors

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Touch sensing is a fundamental approach in human-to-machine interfaces, and is currently under widespread use. Many current applications use active touch sensing technologies. Passive touch sensing technologies are, however, more adequate to implement low power or energy harvesting touch sensing interfaces. This paper presents a passive touch sensing technique based on the fact that the human body is affected by the surrounding extremely low frequency (ELF) electromagnetic fields, such as those of AC power lines. These external ELF fields induce electric potentials on the human body—because human tissues exhibit some conductivity at these frequencies—resulting in what is called AC hum. We therefore propose a passive touch sensing system that detects this hum noise when a human touch occurs, thus distinguishing between touch and non-touch events. The effectiveness of the proposed technique is validated by designing and implementing a flexible touch sensing keyboard.

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Section: Discussionmentioning

confidence: 99%