Design Of A Low Cost Accelerometer Measuring Ambient Vibration Using Piezoelectric Devices

Muhamad Haffiz, Mohd Radzi (2013) Design Of A Low Cost Accelerometer Measuring Ambient Vibration Using Piezoelectric Devices. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Vibration and shock are present in everywhere. It may be generated and transmitted by machine tools, human body and buildings. An accelerometer is a device with sensor that measure vibration or acceleration of a motion structure. In this report we look at issues related with designing and developing a low cost accelerometer measuring ambient vibration by using piezoelectric devices. We survey existing technique and technology of accelerometer. However, these accelerometers do not fulfill the constraints imposed by people in term of cost and its performances. Additional constraint that we impose by using piezoelectric cantilever is hard to be integrated. In this project, the low cost accelerometer consists of piezoelectric sensor and charge amplifier. The charge amplifier is constructed and signal output is analyzed. The piezoelectric electric sensor element made up by PZT material and with physical size (0.51mm × 3.2mm × 31.8mm). The use of charge amplifier to amplify the voltage output from piezoelectric accelerometer. At the end of this project, the expected outcomes are analyzing a cantilever-based accelerometer which can be used to measure vibration acceleration level and frequency.

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