Design and Development of Microcontroller Based Digital pH Meter
نویسندگان
چکیده
A Microcontroller based digital pH meter was designed and developed to measure the value of pH (acidity or alkalinity) for any type of solution. Two op-amps of high input impedance and low output impedance were used to design the pH meter: one is used as a buffer and the other as a summing amplifier. The output of the summing amplifier is connected to the microcontroller as an input. The pH value of a solution microcontroller provides the output value. A microcontroller PIC12F675 was used to control the developed system’s function. A C language program was developed to control the function of the microcontroller, using the PCWH Compiler. The output of the microcontroller is displayed as a pH value that ranges from 0.0 to 14.0 in the three seven segment display. Keywords— microcontroller, PCWH, Ulcer, Gastric, pH probes, clinic, patients.
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