Estimation of a Mass of Grain Inside a Grain Tank Using an Ultrasonic Sensor

Abstract

This paper describes the estimation of a mass of grain accumulated inside a grain tank using an ultrasonic sensor. The ultrasonic sensor measures the distance from tank ceiling to the top of the grain accumulated inside the tank. The coefficient of correlation between the distance measured by the ultrasonic sensor and the mass of grain was R=0.961. The range of resolution with the ultrasonic sensor is 5.3kg/cm. In addition, as the mass of grain depends on the moisture content, multiple regression analysis was adapted to estimate the mass of grain inside the tank with the distance and moisture content. The coefficient of correlation was R=0.986.