Abstract
A low-cost simple machine vision system is developed for exclusive use of surface temperature distribution measurement using temperature sensitive paint (TSP). The measurement system consists of 14-bit commercial digital single-lens reflex camera, LED arrays an excitation light source for TSP and note-book size personal computer for image analysis. The total weight of the system is less than 5.0 kilo grams. Therefore, it has portability. Moreover, the total cost of the system is less than \500,000. The image analysis is done by using Matlab (Mathworks, inc.) which is commercial data analysis software. In this study, as an application of new measurement system, the measurement of temperature distribution on a heated aluminum flat plate installed in a test section of a wind tunnel is done. The measurement results show that the measuring resolution of temperature is less than 0.1 degree C and it has a possibility to measure the average and instantaneous temperature distribution. From these results shown above, simple and low-cost temperature measurement system is realized and it is expected to be used in various in-situ temperature measurements.
