A self-powered 2-dimensional motion detection chip

Zhijian Lu, Kwanlung Cheung, Tao Luo, Hongjiang Song, Jennifer Blain Christen

Research output: Contribution to journalArticle

Abstract

We demonstrate a self-powered chip to detect motion which enables constant, non-invasive monitoring. The chip was implemented in a standard 0.18 μm CMOS process. A P-N junction photodiode array was fabricated in the chip to detect when light is blocked by the movement of a hand or finger. The interface circuit detects the change between the shadowing and the exposure to determine the specific movement. This entire chip operates without any off-chip power supply and provides digitized outputs including 1 bit direction output and an 8 bits output indicative of the velocity in two dimensions.

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Electric Power Supplies
Fingers
Hand
Light
Photodiodes
Networks (circuits)
Monitoring
Direction compound

ASJC Scopus subject areas

  • Medicine(all)

Cite this

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abstract = "We demonstrate a self-powered chip to detect motion which enables constant, non-invasive monitoring. The chip was implemented in a standard 0.18 μm CMOS process. A P-N junction photodiode array was fabricated in the chip to detect when light is blocked by the movement of a hand or finger. The interface circuit detects the change between the shadowing and the exposure to determine the specific movement. This entire chip operates without any off-chip power supply and provides digitized outputs including 1 bit direction output and an 8 bits output indicative of the velocity in two dimensions.",
author = "Zhijian Lu and Kwanlung Cheung and Tao Luo and Hongjiang Song and {Blain Christen}, Jennifer",
year = "2014",
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AU - Cheung, Kwanlung

AU - Luo, Tao

AU - Song, Hongjiang

AU - Blain Christen, Jennifer

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AB - We demonstrate a self-powered chip to detect motion which enables constant, non-invasive monitoring. The chip was implemented in a standard 0.18 μm CMOS process. A P-N junction photodiode array was fabricated in the chip to detect when light is blocked by the movement of a hand or finger. The interface circuit detects the change between the shadowing and the exposure to determine the specific movement. This entire chip operates without any off-chip power supply and provides digitized outputs including 1 bit direction output and an 8 bits output indicative of the velocity in two dimensions.

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JO - Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference

JF - Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference

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