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Humidity Sensor Circuit Using Real Time Operating System (Freertos) Kernel, Bojie Chen
Humidity Sensor Circuit Using Real Time Operating System (Freertos) Kernel, Bojie Chen
Theses and Dissertations--Electrical and Computer Engineering
A humidity sensor can be used to measure the moisture content of the environment. The physical change of the sensor expresses as the change of electrical property like capacitance, resistance, voltage, current, frequency, etc. In order to process these analog signals digitally, microprocessor is involved in the measurement. This thesis presents design of a circuit to measure low moisture levels. The 16-bit RISC mixed signal microcontroller MSP430F249 from Texas Instruments will be used. The circuit has good performance at extremely low humidity levels.
Meanwhile, a small real time operating system kernel FreeRTOS, a market leading RTOS from Real Time Engineer …