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URN etd-0215117-095752 Statistics This thesis had been viewed 527 times. Download 0 times. Author Wei-Che Shen Author's Email Address No Public. Department Mechanical Engineering Year 2016 Semester 1 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 59 Title A Research and Development of the Automatic Noise Detecting System of variable Resistors on PCB Keyword PCB Noise detect Potentiometer Potentiometer Noise detect PCB Abstract The study is to develop an automatic detected system for potentiometer on earphone’s PCB, promote the efficiency for testing potentiometer, and accurately search bad VRs (variable resistances).
We design an available way to analyze bad potentiometer which has three species-no-signal, noise-signal, and broken-signal. The study develops two solutions. One is a signal analyzing device which is used to detect the circuit noise detecting noise by an automated machine, the other one is using the microcontroller to search and analyze the noise of potentiometer. Consequently, both of them are integrated into an automatic potentiometer detecting system.
This paper accomplishes a signal analyzing device which can find bad potentiometer via an automatic system. It can search potentiometer’s eigenvalue by analyzing the circuit noise via MCU(dspic30f4011). Finally, the system can feedback the result to PC via a Bluetooth protocol.
Advisor Committee Long-Jyi Yeh - advisor
Chi-Nan Yeh - co-chair
Guang-Jer Lai - co-chair
Files Date of Defense 2017-01-20 Date of Submission 2017-02-15