Comprehensive information recording pulsed eddy-current flaw detector
A technology of recording pulse and eddy current flaw detection, which is applied in the field of flaw detection instruments and can solve problems such as non-detection
Pending Publication Date: 2017-10-27
LIAONING HONGYANG DETECTION CO LTD
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Problems solved by technology
[0002] Eddy current flaw detection is a method of detecting metal surface and near surface by using electromagnetic principle. Usually, it cannot detect deep defects of metal parts.
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[0009] As shown in the figure, in the logic control operation circuit unit 1, the sampling control operation circuit inputs the sampling signal to the pulse transmitting unit, and sends it to the pulse receiving and suppressing circuit of the electric pulse receiving amplifying circuit unit 2 through the transducer, and sequentially passes through the The control gain circuit, microwave circuit and analog-to-digital conversion circuit are sent back to the sampling control operation circuit, which is sent to the sampling memory by the sampling control operation circuit, and output to the display control circuit and display memory, and the data obtained by the transducer passes through the sampling control operation circuit Finally, it is input to the microprocessor of the microprocessing circuit unit 3, and the microprocessor is respectively connected with power supply voltage monitoring, keyboard control circuit, real-time clock and non-volatile memory, and the signal through th...
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The invention provides a comprehensive information recording pulsed eddy-current flaw detector. In a logic control arithmetic circuit unit, a sampling signal is input to a pulse transmission unit by a sampling control arithmetic circuit, is transmitted to a pulse receiving suppression circuit of an electrical pulse receiving amplification circuit through a transducer, is transmitted back to the sampling control arithmetic circuit sequentially through a controllable gain circuit, a microwave circuit and an analog-digital conversion circuit, is delivered into a sampling memory through the sampling control arithmetic circuit, and is output to a display control circuit and a display memory; data acquired by the transducer is input into a microprocessor of a microprocessing circuit unit; a power supply voltage monitor, a keyboard control circuit, a real-time clock and a nonvolatile memory are respectively connected to the microrprocessor; and the signal of the microprocessor is output to an externally connected processing storage unit through an interface circuit. The comprehensive information recording eddy-current flaw detector can be used for detecting that the surface has a defect having certain depth, and is suitable for a metal part eddy-current flaw detection instruments.
Description
technical field [0001] The invention provides a full-information recording pulse eddy current flaw detector in the field of flaw detection instruments. Background technique [0002] Eddy current testing is a method of detecting metal surfaces and near surfaces using electromagnetic principles. Usually, it cannot detect deep defects in metal parts. Contents of the invention [0003] In order to detect deep metal components, the present invention provides a pulsed eddy current flaw detector with full information recording. The flaw detector solves the technical problem of deep flaw detection of metal parts through the combination of the transducer and the detection circuit. [0004] The scheme that the present invention solves technical problem adopts is: [0005] In the logic control operation circuit unit, the sampling control operation circuit inputs the sampling signal to the pulse emission unit, and sends it to the pulse reception suppression circuit of the electric p...
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IPC IPC(8): G01N27/90
CPCG01N27/9046
Inventor 范军
Owner LIAONING HONGYANG DETECTION CO LTD