MEMS optical position sensor for sun tracking

David Welch; Jennifer Blain Christen

doi:10.1109/ISCAS.2015.7169023

MEMS optical position sensor for sun tracking

David Welch, Jennifer Blain Christen

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Scopus citations

Abstract

We demonstrate a sun tracking sensor fabricated in the MultiMEMS SensoNor process. The sensor uses a quadrant photodetector to determine the position of a projected shadow. Differential measurement of pairs of photodiodes allows simultaneous dual-axis readings. The sensing structure was manufactured in the commercial MultiMEMS process, so it can be easily reproduced in large quantities. The device was tested from -45° to +45° to verify performance. Results show a linear correlation between a mapped output and angle of incident light with an R² value of 0.995. The small size, robust structure, and minimal post-processing make it well-suited for sun tracking applications.

Original language	English (US)
Title of host publication	2015 IEEE International Symposium on Circuits and Systems, ISCAS 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1874-1878
Number of pages	5
ISBN (Electronic)	9781479983919
DOIs	https://doi.org/10.1109/ISCAS.2015.7169023
State	Published - Jul 27 2015
Event	IEEE International Symposium on Circuits and Systems, ISCAS 2015 - Lisbon, Portugal Duration: May 24 2015 → May 27 2015

Publication series

Name	Proceedings - IEEE International Symposium on Circuits and Systems
Volume	2015-July
ISSN (Print)	0271-4310

Other

Other	IEEE International Symposium on Circuits and Systems, ISCAS 2015
Country/Territory	Portugal
City	Lisbon
Period	5/24/15 → 5/27/15

ASJC Scopus subject areas

Electrical and Electronic Engineering

Access to Document

10.1109/ISCAS.2015.7169023

Cite this

Welch, D., & Blain Christen, J. (2015). MEMS optical position sensor for sun tracking. In 2015 IEEE International Symposium on Circuits and Systems, ISCAS 2015 (pp. 1874-1878). Article 7169023 (Proceedings - IEEE International Symposium on Circuits and Systems; Vol. 2015-July). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISCAS.2015.7169023

MEMS optical position sensor for sun tracking. / Welch, David; Blain Christen, Jennifer.
2015 IEEE International Symposium on Circuits and Systems, ISCAS 2015. Institute of Electrical and Electronics Engineers Inc., 2015. p. 1874-1878 7169023 (Proceedings - IEEE International Symposium on Circuits and Systems; Vol. 2015-July).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Welch, D & Blain Christen, J 2015, MEMS optical position sensor for sun tracking. in 2015 IEEE International Symposium on Circuits and Systems, ISCAS 2015., 7169023, Proceedings - IEEE International Symposium on Circuits and Systems, vol. 2015-July, Institute of Electrical and Electronics Engineers Inc., pp. 1874-1878, IEEE International Symposium on Circuits and Systems, ISCAS 2015, Lisbon, Portugal, 5/24/15. https://doi.org/10.1109/ISCAS.2015.7169023

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abstract = "We demonstrate a sun tracking sensor fabricated in the MultiMEMS SensoNor process. The sensor uses a quadrant photodetector to determine the position of a projected shadow. Differential measurement of pairs of photodiodes allows simultaneous dual-axis readings. The sensing structure was manufactured in the commercial MultiMEMS process, so it can be easily reproduced in large quantities. The device was tested from -45° to +45° to verify performance. Results show a linear correlation between a mapped output and angle of incident light with an R2 value of 0.995. The small size, robust structure, and minimal post-processing make it well-suited for sun tracking applications.",

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AB - We demonstrate a sun tracking sensor fabricated in the MultiMEMS SensoNor process. The sensor uses a quadrant photodetector to determine the position of a projected shadow. Differential measurement of pairs of photodiodes allows simultaneous dual-axis readings. The sensing structure was manufactured in the commercial MultiMEMS process, so it can be easily reproduced in large quantities. The device was tested from -45° to +45° to verify performance. Results show a linear correlation between a mapped output and angle of incident light with an R2 value of 0.995. The small size, robust structure, and minimal post-processing make it well-suited for sun tracking applications.

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MEMS optical position sensor for sun tracking

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