Wide-range (120° FoV at 1.6 meters) proximity sensing reference design with immunity to sunlight
TIDA-010021
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Key Document
- Wide-Range (120° FoV at 1.6 Meters) Proximity Sensing Ref. Des. Sunlight Immunit
(PDF 2562 KB)
19 Dec 2018
Description
Proximity sensing with wide field-of-view (FoV) is getting more and more popular and important for people detection in many applications. This reference design uses optical time-of-flight (ToF) techniques to build small and cost-effective proximity sensor systems. A single proximity and distance sensor AFE (OPT3101) with three external NIR LEDs, and one photodiode covers a total 120° wide FoV and outputs accurate distance of people activity.
Features
- 3 NIR emitters support up to 3 zones of detection with a single OPT3101
- Total system field-of-view (FoV) of 120° is covered by three LED emitters and one photodiode
- Detection range up to 1.5 meters without lens
- Adaptive HDR allows measurement insensitive to object color and reflectivity and supports operation under high ambient condition (outdoor and indoor conditions)
- Proximity sensing and direct distance measurement output with accuracy of ±10%
- Exempt group lamp classification LED as emitter
See the Important Notice and Disclaimer covering reference designs and other TI resources.