High-power self-adaptive ultrasonic pulse emission and nonlinear ultrasonic guided wave measurement device

A non-linear ultrasonic and ultrasonic pulse technology, applied in measurement devices, analysis of solids using sonic/ultrasonic/infrasonic waves, and material analysis using sonic/ultrasonic/infrasonic waves, etc. The transmission signal is unstable, etc.

Active Publication Date: 2020-05-15
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] According to the above deficiencies in the prior art, the object of the present invention is to provide a high-voltage pulse transmitting device with an isolated drive unit for exciting the

Method used

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  • High-power self-adaptive ultrasonic pulse emission and nonlinear ultrasonic guided wave measurement device
  • High-power self-adaptive ultrasonic pulse emission and nonlinear ultrasonic guided wave measurement device
  • High-power self-adaptive ultrasonic pulse emission and nonlinear ultrasonic guided wave measurement device

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Embodiment 1

[0079] see figure 1 as shown, figure 1 It is a high-power adaptive ultrasonic pulse emission and nonlinear ultrasonic guided wave measurement device provided by the embodiment of the present invention. The structure of the measuring device includes an excitation signal source unit 1, a feedback control unit 2, a digital signal processing unit 3, a host computer unit 4, a high-voltage power supply unit 5, an adaptive high-voltage pulse transmitting unit 6, an echo receiving circuit and a feedback unit 7, and a switch Unit 8 and ultrasonic transducer 9.

[0080] exist figure 1In the illustrated embodiment, the first control signal output terminal and the second control signal output terminal of the excitation signal source unit 1 respectively output the first control signal and the second control signal to the adaptive high-voltage pulse transmitter through the input isolation unit Input to unit 6. The output terminal of the adaptive high-voltage pulse transmitting unit 6 is...

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Abstract

The invention discloses a high-power self-adaptive ultrasonic pulse emission and nonlinear ultrasonic guided wave measurement device. The device comprises an excitation signal source unit, a self-adaptive high-voltage pulse emission unit, an echo receiving circuit and feedback unit, a digital signal processing unit and a feedback control unit. The output end of the excitation signal source unit isconnected with the input end of the self-adaptive high-voltage pulse transmitting unit and used for providing excitation signals of the system. The output end of the self-adaptive high-voltage pulsetransmitting unit is connected with the input ends of the ultrasonic transducer, the echo receiving circuit and the feedback unit through the switch unit. The output ends of the echo receiving circuitand the feedback unit are connected with the input end of the digital signal processing unit, and the output end of the digital signal processing unit is connected with the input end of the feedbackcontrol unit. According to the invention, the intensity of a transmitted signal and the sensitivity of a received signal can be improved, the noise influence is inhibited, and the characteristics of various ultrasonic transducers are adapted.

Description

technical field [0001] The invention relates to the field of ultrasonic non-destructive testing, and specifically discloses an adaptive feedback type high-voltage drive pulse emission and nonlinear ultrasonic guided wave measurement device for ultrasonic flaw detection and an adaptive nonlinear ultrasonic guided wave based on digital phase-locking technology Detection method. Background technique [0002] With the continuous development of integrated circuit technology, ultrasonic nondestructive testing technology has been widely used in the field of industrial testing. However, in actual application scenarios, there are still a series of problems to be solved. On the one hand, the insufficient transmitting power of ultrasonic waves limits the detection range and detection accuracy. Because some special industrial materials to be tested have very large acoustic impedance, it is difficult for ultrasonic waves to penetrate, and the attenuation speed of ultrasonic waves is pr...

Claims

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Application Information

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IPC IPC(8): G01N29/04G01N29/12G01N29/22G01N29/36G01N29/44
CPCG01N29/04G01N29/12G01N29/22G01N29/36G01N29/44
Inventor 王自鑫张锡斌陈弟虎洪晓斌蔡志岗贾莲莲孔庆钊赵伟鸿
Owner SUN YAT SEN UNIV
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