VIBRATION SENSOR Russian patent published in 2023 - IPC G01H17/00 

FIELD: measuring instrumentation.

SUBSTANCE: vibration sensor contains a vibration receiver and an acoustic transducer. The vibration receiver contains a housing, a limiter, and a vibration block. The housing and the acoustic transducer form an acoustic cavity. The vibration block is located in the acoustic cavity to divide the acoustic cavity into the first acoustic cavity and the second acoustic cavity, the acoustic transducer is acoustically connected to the first acoustic cavity. The housing is made with the ability to generate vibration based on an external vibration signal. The vibration unit is configured to change the sound pressure in the first acoustic cavity in response to vibration of the housing so that the acoustic transducer generates an electrical signal. The vibration unit contains a mass element and an elastic element. The first side of the elastic element is attached around the side wall of the mass element, and the second side of the elastic element is connected to the limiter, and the first side and the second side of the elastic element are located along a direction perpendicular to the vibration direction of the vibration unit.

EFFECT: improved sensitivity.

10 cl, 9 dwg