Automatic calibration system for digital-display vibrometers based on machine vision

• Autorzy: He W. , Xu G. , Rong Z. , Li G. , Liu M.

Identyfikatory

DOI

10.2478/mms-2014-0027

• Języki publikacji: EN

Abstrakty

EN

Considering the low efficiency during the process of traditional calibration for digital-display vibrometers, an automatic calibration system for vibrometers based on machine vision is developed. First, an automatic vibration control system is established on the basis of a personal computer, and the output of a vibration exciter on which a digital-display vibrometer to be calibrated is installed, is automatically adjusted to vibrate at a preset vibration level and a preset frequency. Then the display of the vibrometer is captured by a digital camera and identified by means of image recognition. According to the vibration level of the exciter measured by a laser interferometer and the recognized display of the vibrometer, the properties of the vibrometer are calculated and output by the computer. Image recognition algorithms for the display of the vibrometer with a high recognition rate are presented, and the recognition for vibrating digits and alternating digits is especially analyzed in detail. Experimental results on the built-up system show that the prposed image recognition methods are very effective and the system could liberate operators from boring and intense calibration work for digital-display vibrometers.

Słowa kluczowe

EN

image recognition; calibration; vibration measurement; machine vision; automatic testing; digital-display vibrometer

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2014
• Tom: Vol. 21, nr 2
• Strony: 317--328
• Opis fizyczny: Bibliogr. 21 poz., rys., tab., wykr., wzory

Twórcy

autor

He W.

• The State Key Laboratory of Fluid Power Transmission and Control, Zhejiang Province Key Laboratory of Advanced Manufacturing Technology, Zhejiang University, 310027, Hangzhou, China

autor

Xu G.

• The State Key Laboratory of Fluid Power Transmission and Control, Zhejiang Province Key Laboratory of Advanced Manufacturing Technology, Zhejiang University, 310027, Hangzhou, China

autor

Rong Z.

• Shanghai Key Laboratory of Spacecraft Mechanism, Shanghai 201109, China

autor

Li G.

• ACRE Coking & Refractory Engineering Consulting Corporation, MCC, Dalian 116085, China

autor

Liu M.

• Zhejiang Provincial Institute of Electric Power Test and Research, 310014, Hangzhou, China

Bibliografia

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Uwagi

EN

This research is sponsored by the Science Fund for Creative Research Groups of National Natural Science Foundation of China (Grant No. 51221004), the Zhejiang Provincial Science Fund for Distinguished Young Scholars in China (Grant No. LR12E05001), the National Natural Science Foundation of China (Grant No. 51375443), and the Key Science and Technology Innovation Team Program of Zhejiang Province in China (Grant No. 2009R50008).