Abstract
This work proposes an economical, practical, and easy-to-operate combined measuring device to measure volume. This device integrates measuring tools that are commonly employed in architectural engineering for gauging distance, height, area, and volume, and has an error rate of less than 1% in volume measuring. Regarding the microcomputer controller, the law of cosines in trigonometric functions was adopted to calculate side lengths. The experimental results verified that this device can identify the correlation coefficients of side-length measurements by using sensors and calculating the side length of an object according to the law of cosines .Consequently, the study device achieved non-contact volume measurement using a microcomputer controller, and the results conformed to the gauge repeatability and reproducibility (GR&R) method in measurement system analysis.
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