Implementation of a monitoring system for the measurement of temperature, flow rate, and fluid pressure of cooling systems

Abstract

In this study, a monitoring system was constructed so that changes in the temperature of the fluid that flows inside piping, pipe surface temperatures, flow rates, and pressure can be measured simultaneously and the measured data can be displayed on a screen to enable the observation and recording of changes in fluid conditions for the analysis of the characteristics of automobile cooling systems and various fluid systems. Two types of temperature sensors (contact type and noncontact type) were installed in the system to measure the cooling efficiency of the cooling system and the monitoring system was configured using a digital semiconductor pressure gauge and a turbine flowmeter. A small ATmega8 was used as a CPU for each embedded sensor system. In addition, 24-bit AD converters were used for accurate measurement and the serial communication mode was used to transmit data from individual sensor systems.