Pulse excitation type electromagnetic ultrasonic detector

A technology of electromagnetic ultrasonic and pulse excitation, applied in the direction of using ultrasonic/sonic/infrasonic waves, using sonic/ultrasonic/infrasonic waves to analyze solids, instruments, etc.

Pending Publication Date: 2017-07-28
CHINA SPECIAL EQUIP INSPECTION & RES INST +1
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  • Description
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Problems solved by technology

[0005] The embodiment of the present invention provides a pulse-excited electromagnetic ultrasonic detector to at least solve the problem that the existing electromagnetic ultrasonic thickness measu

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  • Pulse excitation type electromagnetic ultrasonic detector
  • Pulse excitation type electromagnetic ultrasonic detector

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Embodiment Construction

[0020] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0021] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...

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Abstract

The present invention discloses a pulse excitation type electromagnetic ultrasonic detector, wherein the detector comprises a programmable ASIC device for generating a plurality of signals, wherein the plurality of signals comprise a plurality of emission control signals and a charging control signal; a voltage conversion circuit for converting a low-voltage signal into a high-voltage signal; an emission circuit for generating an excitation signal of high voltage and large current; an electromagnetic ultrasonic sensor for generating an ultrasonic signal according to the excitation signal and transmitting a received ultrasonic echo signal to a received signal conditioning and sampling circuit; the received signal conditioning and sampling circuit for processing and carrying out the analog-digital conversion on the signal received by the electromagnetic ultrasonic sensor, and writing the waveform data points in a storage unit in the programmable ASIC device. The pulse excitation type electromagnetic ultrasonic detector of the present invention solves the technical problem that a conventional electromagnetic ultrasonic thickness measurement instrument can not emit the high-voltage large current on the conditions of small size, low power consumption and the low-voltage battery power supply.

Description

technical field [0001] The invention relates to the field of ultrasonic testing, in particular to a pulse-excited electromagnetic ultrasonic testing instrument. Background technique [0002] Ultrasonic testing technology is widely used in thickness measurement and flaw detection of metal equipment. Compared with the traditional piezoelectric ultrasonic detection technology, electromagnetic ultrasonic does not need to polish the surface when detecting metal equipment, which can save detection time and cost, and is suitable for occasions with anti-rust paint and where grinding is not allowed; electromagnetic ultrasonic The detection does not require the use of couplant, which can avoid the problem of poor repeatability of the test results caused by the volatilization of the couplant or uneven application; since the electromagnetic ultrasonic sensor can realize non-contact detection, it is especially suitable for high-temperature detection occasions. In addition, because elect...

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Application Information

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IPC IPC(8): G01B17/02G01N29/04
CPCG01B17/02G01N29/04
Inventor 郑阳周进节
Owner CHINA SPECIAL EQUIP INSPECTION & RES INST
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