Design of a Precise Temperature Monitoring System for Biomedical Applications

Electronics

Health monitoring of a patient is a major concern in the biomedical field. In order to monitor a patient’s health we have to look after certain parameters out of which temperature monitoring is a major parameter. The proposed system gives a temperature monitoring system which uses an RTD temperature sensor, the output of which is further synthesized to get a temperature of accuracy upto 0.01˚C.In order to get this accuracy we have made certain calculations to get the right components of the system which should consume less power and provide an accurate and linearised result. The system is designed to use a Pt100 Sensor whose output is fed to a programmable gain amplifier of gain 10 to get an amplified output. This amplified output is fed to a 16 bit ADC to get a precise measurement. This precise signal is processed with the help of an FPGA and then sent to the PC using UART and RS232 interface. The given system can be used to measure the temperature of patients as well as for the study of absorption spectra of fat and oil samples.

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