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Calibration device of triaxial acceleration sensor and calibration method thereof

A technology of acceleration sensor and calibration device, which is applied in the testing/calibration of speed/acceleration/shock measurement equipment, speed/acceleration/shock measurement, and measurement devices, etc., which can solve problems such as the inability to guarantee measurement accuracy, and meet calibration requirements, The effect of simple structure and low production cost

Inactive Publication Date: 2012-04-11
HENAN DIESEL ENGINE IND
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Problems solved by technology

However, since the standard vibration source can only calibrate the sensitivity in the vertical direction, it cannot do anything about the sensitivity in the axial and lateral directions. That is to say, the three-axial acceleration sensor measures vibration and cannot guarantee the measurement accuracy in the axial and lateral directions.

Method used

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  • Calibration device of triaxial acceleration sensor and calibration method thereof
  • Calibration device of triaxial acceleration sensor and calibration method thereof
  • Calibration device of triaxial acceleration sensor and calibration method thereof

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Embodiment Construction

[0012] In conjunction with accompanying drawing and specific embodiment, the present invention is described further:

[0013] like figure 1 As shown, a calibration device for a three-axis acceleration sensor, the calibration device includes a standard vibration source 5 and an adapter base 3; the standard vibration source 5 is a uniaxial acceleration correction source commonly used in the prior art ; The adapter base 3 arranged under the triaxial acceleration sensor 1 is disc-shaped; there is a threaded hole I6 at the center of the adapter base 3, and there is a screw hole with the same diameter as the threaded hole I6 at the center of the standard vibration source The threaded hole is passed through the threaded hole I6 by the stud I4, and the threaded hole on the standard vibration source is used to fix the transfer base 2 on the standard vibration source 5; along the threaded hole I6 on the end surface of the transfer base 3 A plurality of threaded holes II7 for connectin...

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Abstract

The invention belongs to the engine vibration testing technology field, and provides a calibration device of a triaxial acceleration sensor. The device comprises a standard vibration source (5) and a switching pedestal (3). A central position of the switching pedestal (3) is provided with a screwed hole I (6). The switching pedestal (3) is fixed on the standard vibration source (5) with a stud I (4). Along periphery of the screwed hole I (6), an end face of the switching pedestal (3) is uniformly provided with a plurality of screwed holes II (7) used for connecting with the triaxial acceleration sensor (1). Three mutual vertical planes of the triaxial acceleration sensor are connected to the switching pedestal (3) through a stud II (2) in order. According to the device and the method in the invention, in the prior art, a problem that a standard vibration source can only calibrate sensitivity of one direction of the triaxial acceleration sensor to influence vibration measurement precision is solved, and sensitivity of the triaxial acceleration sensor in a vertical direction, an axial direction and a transverse direction are ensured.

Description

[0001] Technology area [0002] The invention belongs to the technical field of engine vibration testing, and mainly relates to a calibration device and a calibration method for a triaxial acceleration sensor. Background technique [0003] The calibration of the acceleration sensor is a very important link in the engine vibration measurement, which directly affects the accuracy of the measurement results. In the vibration measurement of the current engine, the vibration intensity is usually used for vibration evaluation, and the vibration intensity is the square root of the square root of the average value of each measurement point of the engine vibration in three mutually perpendicular directions (vertical, axial, and transverse). The accuracy of measurement values ​​in each direction directly affects the accuracy of vibration intensity and also directly affects the evaluation of vibration. Due to the zero drift phenomenon of the acceleration sensor for measuring vibration, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P21/00
Inventor 苑海涛李明杨冉陆红雷罗永霞
Owner HENAN DIESEL ENGINE IND
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