Sensor coupling device and damping debugging method suitable for vibration/fluctuation test

A technology of coupling device and debugging method, which is applied to the components of the damping part of the measuring device, the measuring device, and the measurement of ultrasonic/sonic/infrasonic waves, etc., can solve the problems of low test efficiency and unstable frequency response characteristics of the sensor system, and achieve reduction The effect of small bad contact, improved frequency response range, and stable test signal
CN105067111BActive Publication Date: 2018-04-24四川升拓检测技术股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
四川升拓检测技术股份有限公司
Publication Date
2018-04-24

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Abstract

The invention describes a sensor coupling device and a damping debugging method suitable for vibration / fluctuation testing, including a headgear, a card holder arranged in the headgear, and a base fixed at the lower end of the headgear. Both the headgear and the holder are cavity structures, and the lower end of the headgear is open The upper and lower surfaces of the deck are open, and the deck is clamped in the inner cavity of the headgear; the inner wall of the deck is coated with a couplant connected with the sensor; the upper surface of the base is provided with a hole for the lower end of the sensor to pass through. It also includes a coupling agent arranged between the outer wall of the card seat and the inner wall of the headgear. In the present invention, the setting of the card seat provides a lateral damping for the sensor and limits the lateral displacement of the sensor, and the couplant filled between the inner wall of the base and the sensor and the outer wall of the card seat and the inner wall of the headgear does not reduce the sensor and sensor. The viscosity of the test system is increased under the premise of rigid contact of the measured object, the frequency response range of the test system is improved, and the dynamic error is reduced.
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Description

technical field

[0001] The invention relates to a sensor coupling device and a damping debugging method, in particular to a sensor coupling device and a damping debugging method suitable for vibration / fluctuation testing. Background technique

[0002] In the test of vibration and fluctuation, it is currently the most mainstream way to pick up the vibration signal of the structure under test by the sensor, and the sensing system (including sensor and coupling mode) has the most direct influence on the test signal.

[0003] The main indicators of the sensor include quality, sensitivity, frequency response range, natural frequency, lateral sensitivity, temperature range, and impact resistance. The most important indicators are the quality, sensitivity and frequency response range of the sensor. Regarding the mass of the sensor, if the dynamic mass of the accelerometer is close to the dynamic mass of the structure to be measured, the vibration will be significantly attenuated a...

Claims

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