An Improved Phase Detection Method for Laser Guide Systems Using Position Sensitive Detectors

Li, Yazhe; Zhou, Kai; Zhang, Zhen

doi:10.1109/lsens.2018.2835669

Cited by 6 publications

(1 citation statement)

References 21 publications

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“…A técnica de triangulação a laser proporciona, por sua vez, medidas de deslocamento fora do plano com grande precisão e exatidão (Ji e Leu, 1988;Zhuang et al 1995;Zhang et al, 2008), inclusive em alvos de baixa refletividade. Este método consiste na projeção oblíqua de Research, Society and Development, v. 9, n. 9, e100997079, 2020 (CC BY 4. Cui et al, 2010;Massari et al, 2002). Entretanto, seu custo é relativamente elevado e os trâmites para sua importação são mais restritivos do que os relacionados à maioria dos itens científicos e tecnológicos.…”

Section: Introductionunclassified

Low-cost laser measurement gauge for real-time quality control of boards and sheets production

Henrique¹,

Dib²,

Barbosa³

2020

RSD

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This paper describes the conception, the development and the testing of a prototype of a simple and versatile device for micro displacement measurement and thickness monitoring of paper sheets and opaque or transparent plastic films during their fabrication. The device works based on triangulation using low power red diode laser beams for the measurements and low-cost Silicon photodiodes for light detection. The system reproductibility was evaluated as well as experimental simulations for thickness variation detection on adhesive tapes were carried out. The results showed that the gauge is capable to detect and measure thickness variations smaller than 5 µm in real time and can be easily implemented in a production system.

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Section: Introductionunclassified