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

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

Inactive Publication Date: 2013-04-03
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

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

[0040] 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.

[0041] 1. Traceable calibration device for shock sensitivity of high-g accelerometer

[0042] 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

[0058] Embodiment 2. Traceable calibration device and method for shock sensitivity of high-g value accelerometer

[0059] This embodiment is specifically divided into two parts:

[0060] 1. Traceable calibration device for shock sensitivity of high-g accelerometer

[0061] 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.

[0062] 2. The calibrated high-g value accelerometer 7 provided by the present embodiment is a piezoelectric accelerometer with a mechanical filter, such as the Mod...

Embodiment 3

[0065] Embodiment 3. Traceable calibration device and method for shock sensitivity of high-g value accelerometer

[0066] This embodiment is specifically divided into two parts:

[0067] 1. Traceable calibration device for shock sensitivity of high-g accelerometer

[0068] 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 traceability calibration device and method of high-g value accelerometer impact sensitivity of the present invention belong to the technical field of acceleration sensor measurement, and its calibration device includes: launch tube, titanium alloy projectile, red copper adjustment pad, Hopkinson rod, testing instrument, etc.; its calibration Methods Using the above-mentioned calibration device, the projectile accelerated by high-pressure gas in the calibration device hits the adjustment pad on the left end of the Hopkinson rod, and a stress pulse is generated in the Hopkinson rod to excite the high-g value accelerometer. The excitation signal and response signal of the accelerometer realize the traceability calibration of its impact sensitivity; the advantages of the calibration device of the present invention are: through the impact of the titanium alloy projectile on the copper adjustment pad, a pulse width of 200-500 μs and an amplitude of 5,000- The shock pulse of 20,000g is a new innovation and breakthrough in the field of calibration technology; the calibration method of the present invention derives the minimum excitation pulse width formula required for the traceability calibration of high-g value accelerometer shock sensitivity, which has great theoretical significance and important practical application value.

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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Patent Type & Authority Patents(China)
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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