Microcontroller Based Portable Coconut Tapping Mechanism With Audio Signal Filtering

Abstract

Philippines is one of agricultural land in Asia. In most part of the country agriculture plays a significant role in the economy. As technology evolve throughout the years, smart sensor achieved tremendous contribution in agriculture that helps the farmers to utilize insubstantial resources with paltry human mediation. Traditionally, farmers and coconut sellers determine coconut maturity by listening intensively to the sound produced by knocking manually either bare hands or knives. The ability of farmers to characterize the maturity of coconut declines as they age. Therefore, a scientific methodology to the measurement of ripeness levels seems to be of main significance. The proposed study focused on developing a microcontroller-based portable coconut tapping mechanism with audio signal filtering that can help other researchers gather data from the audio signal. The purpose is to find the average value and or ranges of values current flow reading based on varying speed which can be used in classifying coconuts maturity level. The tapping mechanism provide signal for detection and diagnosis, using the engineering principles and concepts the system uses different tapping strokes to determine the consistency of the movement. The raw data acquired from the tapping device were stored in the SD card and filtering of the acquired signal would be done through MATLAB software. The results of the experiment were described using averages and differences were tested for significance using ANOVA. The results showed that the differences in the results are not significant, implying the tapping machine's consistency