A new automatic hand-held laser rangefinder verification system

Yuanyao Li; Beibei Fu; Ruijun Lu; Tao Zhang; Tao Zhang; Qing Li; Xiaoming Wang; Zhong Wang; Siyuan Jia; Yongxia Chen

doi:10.1117/12.2547462

12 March 2020 A new automatic hand-held laser rangefinder verification system

Yuanyao Li, Beibei Fu, Ruijun Lu, Tao Zhang, Tao Zhang, Qing Li, Xiaoming Wang, Zhong Wang, Siyuan Jia, Yongxia Chen

Proceedings Volume 11439, 2019 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems; 1143914 (2020) https://doi.org/10.1117/12.2547462
Event: 2019 International Conference on Optical Instruments and Technology, 2019, Beijing, China

Abstract

At present, the verification method of hand-held laser range finder has characteristics of high labor intensity, low working efficiency and low measuring accuracy. To solve these problems, an automatic hand-held laser range finder verification system is built in this paper. This system contains a 50m marble calibration platform, a measuring trolley with visual measuring module, and a multi-degree of freedom holder of range finder. It can automatically identify the observed readings of rangefinder through optical character recognition (OCR) technology, compare with the standard ranging value obtained by the trolley, and then evaluate error of indication. Thus achieving the purpose of calibrating the rangefinder. All of the communication between PC and trolley is realized by WiFi. Experiments show this device has comprehensive functions, high level of automation, practical application value and broad market prospects.

Citation Download Citation

Yuanyao Li, Beibei Fu, Ruijun Lu, Tao Zhang, Tao Zhang, Qing Li, Xiaoming Wang, Zhong Wang, Siyuan Jia, and Yongxia Chen "A new automatic hand-held laser rangefinder verification system", Proc. SPIE 11439, 2019 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 1143914 (12 March 2020); https://doi.org/10.1117/12.2547462

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KEYWORDS

Laser range finders

Optical character recognition

Laser systems engineering

Calibration

Image processing

Light sources

Charge-coupled devices

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