Sensing assembly for use in piezoelectric liquid level sensor
AssigneeABB Schweiz AG
InventorJianjun Wu
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Abstract
A sensing assembly for use in a piezoelectric liquid level sensor. The sensing assembly includes a first piezoelectric sensing module arranged on a magnetostrictive wire and adapted to receive an ultrasonic guided wave signal propagating along the magnetostrictive wire. The assembly also includes a second piezoelectric sensing module arranged on the magnetostrictive wire and spaced apart from the first piezoelectric sensing module. The assembly includes an isolation layer arranged on the magnetostrictive wire between the first piezoelectric sensing module and the second piezoelectric sensing module and adapted to block the ultrasonic guided wave signal from propagating to the second piezoelectric sensing module.
Claims20
A sensing assembly for use in a piezoelectric liquid level sensor, comprising:
- a first piezoelectric sensing module arranged on a magnetostrictive wire and adapted to receive an ultrasonic guided wave signal propagating along the magnetostrictive wire;
- a second piezoelectric sensing module arranged on the magnetostrictive wire and spaced apart from the first piezoelectric sensing module;
- and
- an isolation layer arranged on the magnetostrictive wire between the first piezoelectric sensing module and the second piezoelectric sensing module and adapted to block the ultrasonic guided wave signal from propagating to the second piezoelectric sensing module.
Dependencies are inferred from the claim text.