Patent ID: 9038442
Filing Date: 2015-05-26
Classification: F01N,G01F,G01N,Y02T

Abstract:
1. A system for determining a quality and a quantity of a fluid in a tank having a bottom, the system comprising: a fixed object; a first transducer configured to generate a first sound wave in a horizontal direction and to detect a first echo of the first sound wave from the fixed object, the first transducer configured to be positioned near the bottom of the tank, and the fixed object positioned a known distance away from the transducer; a second transducer configured to generate a second sound wave in a vertical direction and to detect a second echo of the second sound wave, the second transducer configured to be positioned near the bottom of the tank such that the second sound wave travels toward a surface of the fluid in the tank; a temperature sensor configured to detect a temperature of the fluid; and a controller configured to: