CN211627456U - Ultrasonic flaw detection instrument - Google Patents
Ultrasonic flaw detection instrument Download PDFInfo
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- CN211627456U CN211627456U CN202020367516.0U CN202020367516U CN211627456U CN 211627456 U CN211627456 U CN 211627456U CN 202020367516 U CN202020367516 U CN 202020367516U CN 211627456 U CN211627456 U CN 211627456U
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Abstract
The utility model provides an ultrasonic flaw detection instrument, including last casing and lower casing, be provided with the circuit board that has the singlechip in last casing and the lower casing, be provided with ultrasonic detection module and data acquisition module on the circuit board, ultrasonic detection module includes ultrasonic emission circuit, probe, ultrasonic receiving circuit, high frequency amplification circuit, band pass filter, and ultrasonic emission circuit is connected with ultrasonic receiving circuit through the probe, and ultrasonic receiving circuit is connected with singlechip and high frequency amplification circuit respectively, and high frequency amplification circuit is connected with singlechip and band pass filter respectively, and band pass filter is connected with the singlechip; the data acquisition module comprises an A/D conversion chip, a data memory and an EPLD chip, the band-pass filter is connected with the A/D conversion chip, the A/D conversion chip is connected with the data memory, the data memory is connected with the single chip microcomputer, and the EPLD chip is respectively connected with the data memory and the A/D conversion chip; signal interference and signal distortion are reduced.
Description
Technical Field
The utility model relates to a boiler equipment technical field, especially an ultrasonic flaw detection instrument.
Background
The ultrasonic detection technology is a very important method in the field of nondestructive detection, and is widely applied to safety monitoring such as online quality control and the like. The traditional pulse radiation type ultrasonic detector mainly comprises a synchronous circuit, a scanning circuit, a time scale circuit, a transmitting circuit, a receiving circuit, a detection circuit, a video amplification circuit, a probe, an oscilloscope CTR circuit and the like. Once the power supply of the detector is switched on, the synchronous circuit immediately sends out three synchronous trigger signals to control the transmitting circuit, the scanning circuit and the time scale circuit to work synchronously. When the synchronization signal after slight delay is fed back to the transmitting circuit, the transmitting circuit immediately generates a high-frequency electric pulse with short rise time, narrow pulse and large amplitude. The transmission pulse acts on the probe through the cable, the probe is excited to generate high-frequency pulse ultrasonic waves, the ultrasonic waves penetrate through the coupling agent and are injected into a workpiece to finish the transmission work of the ultrasonic waves, and the circuit structure of the traditional pulse radiation type ultrasonic detector is complex.
Disclosure of Invention
In order to overcome the problems, the utility model aims to provide an ultrasonic flaw detection instrument, traditional hardware circuit complex design and circuit planning have been reduced, signal interference and signal distortion have been reduced.
The utility model discloses a following scheme realizes: an ultrasonic flaw detection instrument comprises an upper shell and a lower shell, wherein circuit boards with single-chip microcomputers are arranged in the upper shell and the lower shell, an ultrasonic detection module and a data acquisition module are arranged on the circuit boards, the ultrasonic detection module comprises an ultrasonic transmitting circuit, a probe, an ultrasonic receiving circuit, a high-frequency amplifying circuit and a band-pass filter, the ultrasonic transmitting circuit is connected with the ultrasonic receiving circuit through the probe, the ultrasonic receiving circuit is respectively connected with the single-chip microcomputers and the high-frequency amplifying circuit, the high-frequency amplifying circuit is respectively connected with the single-chip microcomputers and the band-pass filter, and the band-pass filter is connected with the single; the data acquisition module comprises an A/D conversion chip, a data memory and an EPLD chip, the band-pass filter is connected with the A/D conversion chip, the A/D conversion chip is connected with the data memory, the data memory is connected with the single chip microcomputer, and the EPLD chip is respectively connected with the data memory and the A/D conversion chip.
Furthermore, the detecting instrument further comprises a liquid crystal display and a keyboard module, wherein the liquid crystal display is connected with the single chip microcomputer, and the keyboard module is connected with the EPLD chip.
Furthermore, the single chip microcomputer is connected with an external port, and the external port is connected with a power supply module and an upper computer.
Furthermore, the single chip microcomputer is an STM32 series single chip microcomputer.
Further, the type of the band-pass filter is a BPF series band-pass filter.
Furthermore, the type of the probe is JC-1400 ultrasonic probe.
The beneficial effects of the utility model reside in that: the utility model discloses cancelled traditional pulse radiation ultrasonic detector's synchronous circuit, scanning circuit, time scale circuit, oscilloscope CTR, reduced hardware circuit complex design and circuit planning, reduced signal interference and signal distortion. The EPLD chip has powerful real-time logic processing function, and is controlled by means of the single chip microcomputer, so that the volume is small, the cost is low, and the reliability is high.
Drawings
Fig. 1 is a schematic diagram of the circuit structure of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Please refer to fig. 1, the utility model provides an ultrasonic flaw detection instrument, including last casing and lower casing, be provided with the circuit board that has singlechip 1 in last casing and the lower casing, be provided with ultrasonic detection module 2 and data acquisition module 3 on the circuit board, ultrasonic detection module 2 includes ultrasonic emission circuit 21, probe 22, ultrasonic receiving circuit 23, high frequency amplification circuit 24, band pass filter 25, ultrasonic emission circuit 21 is connected with ultrasonic receiving circuit 23 through probe 22, ultrasonic receiving circuit 23 is connected with singlechip 1 and high frequency amplification circuit 24 respectively, high frequency amplification circuit 24 is connected with singlechip 1 and band pass filter 25 respectively, band pass filter 25 is connected with singlechip 1; the data acquisition module 3 comprises an A/D conversion chip 31, a data memory 32 and an EPLD chip 33, the band-pass filter 25 is connected with the A/D conversion chip 31, the A/D conversion chip 31 is connected with the data memory 32, the data memory 32 is connected with the single chip microcomputer 1, and the EPLD chip 33 (an erasable programmable logic device EPLD) is respectively connected with the data memory 32 and the A/D conversion chip 31. The ultrasonic wave transmitting circuit 21, the ultrasonic wave receiving circuit 23, the high-frequency amplifying circuit 24 and the band-pass filter 25 are already the prior art, and the specific structure of the motor is not described in detail herein; the single chip microcomputer is STM32 series single chip microcomputer. The type of the band-pass filter is a BPF series band-pass filter. The probe is JC-1400 ultrasonic probe.
The detection instrument further comprises a liquid crystal display 4 and a keyboard module 5, wherein the liquid crystal display 4 is connected with the single chip microcomputer 1, and the keyboard module 5 is connected with the EPLD chip. The condition that can detect the probe is shown through LCD 4, and the keyboard module can operate detecting instrument.
Additionally, the utility model discloses in, the singlechip is connected with an external port 6, external port is connected with power module 7 and upper computer 8. This power module can provide the power for the detector, and is connected the back with detecting instrument and host computer 8, also can control detecting instrument's operation through host computer to make the user carry out human-computer interaction better, the strong operability.
The working principle of the utility model is as follows:
the detection instrument is started, an ultrasonic transmitting circuit in the ultrasonic detection module generates a high-voltage excitation pulse signal, and an excitation probe generates a high-frequency sound wave with a certain central frequency (the EPLD chip is controlled by the single chip microcomputer to provide an excitation signal with low voltage and adjustable pulse width for the transmitting circuit, and the ultrasonic transmitting circuit converts the excitation signal into a high-voltage narrow-pulse ultrasonic excitation signal with adjustable pulse width). The high-frequency ultrasonic waves are reflected at both end surfaces of the workpiece and at uneven portions such as internal defects. The reflected ultrasonic echo signal is converted into a voltage signal through a piezoelectric wafer in the probe, then the voltage signal is amplified through an ultrasonic receiving circuit and a high-frequency amplifying circuit, and then the voltage signal is filtered through a band-pass filter (so as to filter out field-irrelevant electromagnetic interference) and then is sent to a data storage device in a data acquisition module for data sampling and storage.
The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (6)
1. An ultrasonic flaw detection instrument is characterized in that: the ultrasonic detection device comprises an upper shell and a lower shell, wherein circuit boards with single-chip microcomputers are arranged in the upper shell and the lower shell, an ultrasonic detection module and a data acquisition module are arranged on the circuit boards, the ultrasonic detection module comprises an ultrasonic transmitting circuit, a probe, an ultrasonic receiving circuit, a high-frequency amplifying circuit and a band-pass filter, the ultrasonic transmitting circuit is connected with the ultrasonic receiving circuit through the probe, the ultrasonic receiving circuit is respectively connected with the single-chip microcomputers and the high-frequency amplifying circuit, the high-frequency amplifying circuit is respectively connected with the single-chip microcomputers and the band-pass filter, and the band-pass; the data acquisition module comprises an A/D conversion chip, a data memory and an EPLD chip, the band-pass filter is connected with the A/D conversion chip, the A/D conversion chip is connected with the data memory, the data memory is connected with the single chip microcomputer, and the EPLD chip is respectively connected with the data memory and the A/D conversion chip.
2. An ultrasonic flaw detection apparatus according to claim 1, wherein: the detection instrument further comprises a liquid crystal display and a keyboard module, wherein the liquid crystal display is connected with the single chip microcomputer, and the keyboard module is connected with the EPLD chip.
3. An ultrasonic flaw detection apparatus according to claim 1, wherein: the single chip microcomputer is connected with an external port, and the external port is connected with a power module and an upper computer.
4. An ultrasonic flaw detection apparatus according to claim 1, wherein: the single chip microcomputer is STM32 series single chip microcomputer.
5. An ultrasonic flaw detection apparatus according to claim 1, wherein: the type of the band-pass filter is a BPF series band-pass filter.
6. An ultrasonic flaw detection apparatus according to claim 1, wherein: the probe is JC-1400 ultrasonic probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020367516.0U CN211627456U (en) | 2020-03-20 | 2020-03-20 | Ultrasonic flaw detection instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020367516.0U CN211627456U (en) | 2020-03-20 | 2020-03-20 | Ultrasonic flaw detection instrument |
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| Publication Number | Publication Date |
|---|---|
| CN211627456U true CN211627456U (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020367516.0U Active CN211627456U (en) | 2020-03-20 | 2020-03-20 | Ultrasonic flaw detection instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272879A (en) * | 2020-03-20 | 2020-06-12 | 福建省锅炉压力容器检验研究院 | Method for judging defect type in ultrasonic flaw detection |
-
2020
- 2020-03-20 CN CN202020367516.0U patent/CN211627456U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272879A (en) * | 2020-03-20 | 2020-06-12 | 福建省锅炉压力容器检验研究院 | Method for judging defect type in ultrasonic flaw detection |
| CN111272879B (en) * | 2020-03-20 | 2024-08-16 | 福建省锅炉压力容器检验研究院 | Method for judging defect type in ultrasonic flaw detection |
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