SELF-CALIBRATING ULTRASONIC-BASED MONITORING SYSTEM
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United States of America Patent
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Issued Date -
Feb 18, 2016
app pub date -
Mar 21, 2014
filing date -
Mar 22, 2013
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Abstract
Systems, methods, and devices for determining distances inside a liquid filled container such as an oil tank. A combined ultrasonic signal receiver/transmitter with an attached reflector is immersed in the liquid. An ultrasonic signal is then transmitted from the receiver/transmitter and reflected ultrasonic signals are then received. One of the reflected signals is reflected off of the attached reflector and this reflected signal is then used to determine the signal's velocity and to thereby self-calibrate the system. Once the velocity in the liquid is known, the other reflected signals can then be used to determine the distance between the receiver/transmitter and at least one point of interest in the container.
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