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Traceability calibration device and method for shock sensitivity of high-g-value accelerometer

A technology of accelerometer and calibration device, which is applied in the testing/calibration of speed/acceleration/shock measuring equipment, speed/acceleration/shock measurement, measuring device, etc. It can solve the problem of not giving the minimum pulse duration for calibration, etc.

Inactive Publication Date: 2011-11-23
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to obtain the shock sensitivity of the accelerometer, under the condition that the resonant frequency of the accelerometer is not excited, ISO 16063-13 stipulates the duration of the shock pulse, but does not give the shock accelerometer calibration required for different resonant frequencies Minimum pulse duration

Method used

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  • Traceability calibration device and method for shock sensitivity of high-g-value accelerometer
  • Traceability calibration device and method for shock sensitivity of high-g-value accelerometer
  • Traceability calibration device and method for shock sensitivity of high-g-value accelerometer

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Embodiment 1

[0037] Embodiment 1. Traceable calibration device and method for shock sensitivity of high-g value accelerometer

[0038] The traceability calibration device and method of high-g value accelerometer shock sensitivity of this embodiment are divided into two parts, one is the traceability calibration device of high-g value accelerometer shock sensitivity; the other is the high-g value accelerometer shock sensitivity Traceable calibration method.

[0039] 1. Traceable calibration device for shock sensitivity of high-g accelerometer

[0040] The specific structure of the traceability calibration device of the high-g value accelerometer impact sensitivity of this example is as follows figure 1 , figure 2 shown. Such as figure 1 The calibration device shown in this example includes: high-pressure gas source, launch tube 1, projectile 2, adjustment pad 3, Hopkinson rod 4, accelerometer mount 5, grating 6, laser interferometer 8, amplifier 9, transient waveform Recorder 10 and...

Embodiment 2

[0056] Embodiment 2. Traceable calibration device and method for shock sensitivity of high-g value accelerometer

[0057] This embodiment is specifically divided into two parts:

[0058] 1. Traceable calibration device for shock sensitivity of high-g accelerometer

[0059] The specific structure of the traceability calibration device of the high-g value accelerometer impact sensitivity of this example is as follows figure 1 , figure 2 shown. The difference between the traceability calibration device of the high-g value accelerometer shock sensitivity of this example and embodiment one.1. The traceability calibration device of high-g value accelerometer shock sensitivity has: 1. The amplifier 9 of this example refers to the A voltage amplifier with filter function, such as Endevco Model 136 voltage amplifier. 2. The calibrated high-g value accelerometer 7 provided by the present embodiment is a piezoelectric accelerometer with a mechanical filter, such as the Model 7270A-...

Embodiment 3

[0062] Embodiment 3. Traceable calibration device and method for shock sensitivity of high-g value accelerometer

[0063] This embodiment is specifically divided into two parts:

[0064] 1. Traceable calibration device for shock sensitivity of high-g accelerometer

[0065] The specific structure of the traceability calibration device of the high-g value accelerometer impact sensitivity of this example is as follows figure 1 , figure 2 shown. The difference between the traceability calibration device of the high-g value accelerometer shock sensitivity of this example and the traceability calibration device of the high-g value accelerometer shock sensitivity of embodiment one.1. and embodiment two.1. has: 1. The The example amplifier 9 refers to an IEPE amplifier with a low-pass filtering function, such as a YE3820 multifunctional amplifier. 2. The high-g value accelerometer 7 selected for this example is a piezoelectric accelerometer with a mechanical filter, such as the ...

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Abstract

The invention discloses a traceability calibration device and method for shock sensitivity of a high-g-value accelerometer, belonging to the technical field of acceleration sensor measurement. The calibration device comprises a launch tube, a titanium alloy projectile, a red copper adjusting pad, a Hopkinson bar, a tester and the like; in the calibration method, the calibration device is adopted,the projectile speeded up by high pressure gas in the calibration device is operated to strike the adjusting pad at the left end surface of the Hopkinson bar, to generate a strain pulse in the Hopkinson bar so as to excite the high-g-value accelerometer, then the excitation signal and response signal of the accelerometer are measured through a tester, thus traceability calibration for the shock sensitivity of the accelerometer is realized. The calibration device disclosed by the invention has the advantages that a shock pulse of 200 to 500 mus in pulse width and 5,000 to 20,000g in amplitude is generated in the Hopkinson bar through using the titanium alloy projectile to strike the red copper adjusting pad, which is the new innovation and new breakthrough in the technical field of calibration; and the calibration method in the invention derives the minimum exciting pulse width formula needed in the traceability calibration for the shock sensitivity of the high-g-value accelerometer, and has great theoretical significance and important practical application values.

Description

1. Technical field [0001] The invention discloses a traceable calibration device and method for the impact sensitivity of a high-g accelerometer, which belongs to the technical field of acceleration sensor measurement, and specifically relates to a traceable calibration device and a calibration method for the impact sensitivity of a high-g accelerometer. 2. Background technology [0002] The development of deep penetration weapons urgently needs to test the acceleration of the missile when it penetrates the underground target, so as to provide a basis for the detonation of the fuze at a fixed depth. The latest precision-guided bomb developed by the United States has realized the real-time interpretation of the number of penetration layers and the real-time calculation of the penetration depth. It can calculate 16 holes or hard layers, and the calculated total penetration distance reaches 78m. In the process of the missile penetrating the underground target, the penetration a...

Claims

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Application Information

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IPC IPC(8): G01P21/02
Inventor 范锦彪王燕范锦宏张红艳祖静马铁华徐鹏林祖森沈大伟杜红棉李新娥尤文斌
Owner ZHONGBEI UNIV
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