ARM based temperature measurement and processing to remote computer using fiber optic cable

Accurate measurement and monitoring of temperature is an important task in research field and vital task in industrial and chemical processes. In this paper we present an inexpensive instrumentation for the measurement, monitoring and processing of temperature of a thermally insulated chamber. The same principle can be extended to any other system whose temperature has to be measured. The system is built around an advanced 32-bit ARM RISC processor: LPC2148. The LM35 temperature sensor is interfaced to the LPC2148 by directly connecting its output to the analog input channel of the on-chip 10-bit ADC. The sensed temperature is not only displayed on the LCD but also sent to the laptop/desktop by communicating over fiber optic cable. The experimental results are discussed in detail, which shows the wide range of accurate temperature measurement using ARM processor.