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Short-range visible light ranging and detecting system using illumination light emitting diodes

journal contribution
posted on 2023-06-09, 19:22 authored by Dehao Wu, We-De Zhong, Zabih Ghassemlooy, Chen Chen
A visible light object ranging and detecting system utilising light emitting diodes (LEDs) is proposed and investigated. The LEDs are used not only as illuminating devices but also as ranging and detecting sensors. LED is intensity modulated with a predetermined sinusoid signal at a certain frequency with an initial phase. After propagation, the backscatter signals from the object are received and detected. The direction of the object is estimated by an optical imaging receiver. The distance between the object and the LED is obtained based on a differential phase-shift measurement. The theoretical model of the system is derived and evaluated, and the fundamental channel characteristics of the proposed system are simulated and analysed. The numerical results show that with a proper design, the presence or position of an object can be identified with a detection range of up to ~6 m, with an estimation error as small as ~5 cm for the system employing commercially available illumination LEDs.

History

Publication status

  • Published

File Version

  • Published version

Journal

IET Optoelectronics

ISSN

1751-8768

Publisher

The Institution of Engineering and Technology

Issue

3

Volume

10

Page range

94-99

Department affiliated with

  • Engineering and Design Publications

Research groups affiliated with

  • Advanced Communications, Mobile Technology and IoT (ACMI) Publications

Notes

2018 premium Award for Best Paper in IET Optoelectronics

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2019-10-28

First Compliant Deposit (FCD) Date

2019-10-14

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