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Method and device for analyzing and testing parameter of vibration type pickup

A technology of parameter analysis and testing equipment, applied in vibration testing, measuring equipment, testing of machine/structural components, etc., can solve problems such as difficult to meet mass production, complex debugging process, low testing efficiency, etc., and achieve high testing efficiency, The effect of simple debugging process and low cost

Active Publication Date: 2010-03-17
DONGGUAN TRANSOUND ELECTRONICS
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Problems solved by technology

Depend on figure 1 It can be seen that this test system needs a combination of multiple special test instruments to meet the basic test conditions. The cost is high, the debugging process is complicated, the test efficiency is low, and it is difficult to meet the needs of mass production.

Method used

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  • Method and device for analyzing and testing parameter of vibration type pickup
  • Method and device for analyzing and testing parameter of vibration type pickup
  • Method and device for analyzing and testing parameter of vibration type pickup

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Embodiment Construction

[0029] Such as Figure 2 to Figure 5 As shown, the present invention mainly includes an interface device 1 , a test module 2 and an electromagnetic vibrating table 3 equipped with a standard accelerometer 5 .

[0030] The accelerometer 5 includes an acceleration sensor 51 and an acceleration measurement module 52 .

[0031] Described interface device 1 bears the function of the input conversion of test signal and the amplifying output of electromagnetic vibrating table 3 excitation signals, comprises preamplifier 11, and this A / D converter 12 is amplified through preamplifier 11 to tested pickup 4 output The signal of the signal is directly sampled, and the signal is sent to the test module 2 by the audio digital signal processing module 13; the test module 2 outputs a noise signal, which is converted into an analog signal by the audio digital signal processing module 13 and the D / A converter 14, and after power The amplifier 15 is loaded on the input end of the electromagnet...

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Abstract

The invention relates to a device for analyzing and testing the parameter of a vibration type pickup, which mainly comprises an interface device, a test module and an electromagnetic vibration platform provided with a standard accelerometer; only the frequency-magnitude curve parameter of a curve which is output by the electromagnetic vibration platform needs to be tested by the standard accelerometer and can be used as a relative reference standard, and the curve parameter of a pickup which is tested each time and the relative reference standard are compared and calculated to obtain the frequency-magnitude property and the sensitivity parameter of the tested pickup; and the frequency analysis degree of the invention is only restricted by the processing capacity and the memory capacity ofthe test module, a basic test condition can be achieved without combining a plurality of special test instruments, and the invention has low cost, simple debugging process and high test efficiency and can meet the requirement of mass production.

Description

technical field [0001] The invention relates to a parameter analysis and testing method and device of a vibrating pickup. Background technique [0002] The vibration pickup is a vibration audio sensing element designed by using the acceleration sensor test principle. It is mainly used for anti-noise communication in military battlefields, firefighting scenes and all special environments with high noise. In the development, production and testing process of the vibrating pickup, due to the detection principle of the accelerometer, it is necessary to have a vibration device that can maintain constant acceleration parameters within the measured range, and use the constant characteristics of the system to test the Key parameters of device sensitivity and frequency response. [0003] The previous vibration sound test devices basically used an analog vibration detection system. The testing principle of the system is as follows: figure 1 As shown, it is mainly composed of a vibra...

Claims

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Application Information

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IPC IPC(8): H04R29/00G01M7/02
Inventor 温增丰郑虎鸣贺志坚
Owner DONGGUAN TRANSOUND ELECTRONICS
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