Measuring temp. of railway vehicles and components - involves measuring infrared radiation of moving vehicle and comparing profile with known signal patterns

摘要

The temp. measuring method involves measuring the infrared radiation from the vehicle or component during the passage of the vehicle over track measurement equipment contg. infrared sensors. Infrared noise sources and their reflections are filtered out. The accurate wheel position and wheel dia. are determined each time and the infrared profile detected by the IR sensors in the infrared measurement system is compared with known infrared signal patterns of the vehicle or vehicle component. USE/ADVANTAGE - Determining wheel dia. and position. Overcomes disadvantages of conventional methods, including effects of extraneous thermal sources.