CPC G01F 23/2962 (2013.01) [G01F 23/2968 (2013.01)] | 30 Claims |
1. An ultrasonic sensor for detecting a level of a liquid, the ultrasonic sensor comprising:
a substrate having a first edge and a second edge;
an acoustic array on the substrate between the first edge and the second edge;
an ultrasonic transducer on the substrate and acoustically coupled to an end of the acoustic array;
an acoustic diversion array on the substrate between the first edge and the acoustic array and running in parallel with the acoustic array; and
a liquid level sensing region on the substrate lying next to the acoustic array on a side of the acoustic array opposite the acoustic diversion array.
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