Closed container liquid level position detection device
A technology of liquid level position and detection device, applied in the direction of measurement device, liquid level indicator, lubrication indicator device, etc., can solve the problems of instability and inaccurate measurement, and achieve system stability, measurement system accuracy, and good real-time performance. Effect
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[0022] see figure 1 , a liquid level position detection device in a closed container, comprising a sound source 1, an interdigital transducer 2, a double-layer structure flexible body 3, and a hollow plastic tube 4, the sound source 1 and the interdigital transducer 2 are left and right symmetrically distributed, The sound wave of the sound source 1 is a flexible surface acoustic wave, which will propagate along the surface of the double-layer structure flexible body 3. A double-layer structure flexible body 3 is arranged under the sound source 1 and the interdigital transducer 2, and the interdigital transducer The device 2 converts the vibration caused by the sound wave propagating along the surface of the double-layer structure flexible body 3 into electrical signals through the piezoelectric effect, and the lower end of the double-layer structure flexible body 3 is fixedly connected with a hollow plastic tube 4 .
[0023] see figure 1 , the upper layer of the double-layer...
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