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| A Measurement Method of Plasma Jet Temperature Field Based on Virtual Instrument |
| LIN Xin-mei1,FANG Jian-cheng1,XU Wen-ji2,ZHAO Zi-yu1 |
1. College of Mechanical Engineering and Automation, Huaqiao University, Quanzhou, Fujian 362021, China
2. School of Mechanical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China |
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Abstract Combining CCD technology with image processing analysis, virtual instrument based high-temperature jet measurement technology is proposed. Image acquisition as well as real-time display of the jet is achieved by general image acquisition card under the LabVIEW platform. Then, the relationship between the grayscale and temperature field is established. A powerful image processing system IMAQ Vision is applied to obtain the distribution image of jet temperature field. Experimental results show that the proposed temperature measurement method is low-cost, high accuracy and simple operation, and it has broad application prospects, such as the thermal power plants, metal welding, smelting and other occasions.
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2010, Vol. 31 
