Development of an embedded system for non-contact measurement of equipment temperature using thermal array sensor
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Date
2017-06
Authors
Kenneth Tang Hung Peng
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Abstract
Electric fault has become a major concern nowadays and can cause equipment failure, financial losses and pose risks of fire. Hence, early detection of electric fault is important in preventing electric fault to happen. Abnormal temperature could be an early sign of potential electric fault. Measuring equipment temperature is vital to prevent electric fault. There are different ways to measure equipment temperature including the use of the contact or non-contact thermometer. In this study, non-contact thermometer embedded system was developed with low cost for continuous monitoring and measuring the equipment temperature. This non-contact thermometer (MLX90621) was communicated with Raspberry Pi 3 (RPi3) by using C language to allow transmit the thermal data via I2C method. The absolute chip temperature (Ta) and object temperature (To) were identified through some calculation. The object temperature will be converted to heat map and displayed in the LCD screen with the preview image captured by NoIR (No Infrared) camera module. The LCD screen and NoIR camera were communicated with RPi 3 by using python. Different colorswhich represent different object temperature were presented on the LCD screen with adjusted threshold.