VIBRATION SENSORS Russian patent published in 2024 - IPC G01H17/00 

FIELD: measurement.

SUBSTANCE: invention relates to measurement equipment, in particular to vibration sensors. Vibration sensor comprises a vibration receiver, comprising a housing and a vibration unit, wherein the housing forms an acoustic cavity, the vibration unit is located in the acoustic cavity and divides the acoustic cavity into a first acoustic cavity and a second acoustic cavity; and an acoustic transducer acoustically connected to the first acoustic cavity, wherein the housing is configured to generate vibration based on the external vibration signal and the vibration unit is configured to vary the sound pressure in the first acoustic cavity in response to the vibration of the housing, causing the acoustic transducer to generate an electrical signal; vibration unit comprises a mass element and a resilient element, area of the mass element located on the side far from the acoustic transducer is less than the area of the mass element located on the side closest to the acoustic transducer, and the elastic element is attached around the side wall of the mass element. In the cross section of the mass element in the direction of its vibration, the connecting line between the edge of the mass element on the side far from the acoustic transducer, and the edge of the mass element on the side closest to the acoustic transducer forms an angle with the direction of vibration of the mass element, wherein the angle is in range of 10–80°.

EFFECT: high structural stability and sensitivity of the sensor.

9 cl, 13 dwg