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Ultrasonic probe integrated with signal excitation amplification module

A signal amplification module and the technology of the amplification module, which are applied in the field of ultrasonic probes, can solve the problems of low signal-to-noise ratio and detection sensitivity, and achieve the effects of improving the equivalent signal-to-noise ratio, reducing requirements, and improving anti-interference ability

Pending Publication Date: 2022-07-01
RES INST OF NUCLEAR POWER OPERATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the instrument and the ultrasonic probe are connected by a long coaxial cable, the middle is easily interfered by other signals, and the signal-to-noise ratio and detection sensitivity are low

Method used

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  • Ultrasonic probe integrated with signal excitation amplification module
  • Ultrasonic probe integrated with signal excitation amplification module
  • Ultrasonic probe integrated with signal excitation amplification module

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Embodiment Construction

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] The invention is an ultrasonic probe with an integrated signal excitation and amplification module. The ultrasonic instrument does not need to transmit excitation signals, but only needs a given excitation frequency command. The internal signal excitation module generates corresponding excitation signals and transmits them to the piezoelectric wafer. The electrical signal induced by the chip passes through the internal signal amplifier module, amplifies the weak signal by tens of dB (20-40dB), and transmits it to the ultrasonic instrument through the coaxial cable, which can improve the jitter of the ultrasonic excitation signal (traditional ultrasonic wave). When the probe excitation signal passes through a coaxial cable, the pulse frequency is affected by the distributed parameters of the cable, and the jitter of the rising and ...

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Abstract

The invention discloses an ultrasonic probe integrated with a signal excitation and amplification module, which comprises a probe joint, a probe frame, a signal excitation module, a piezoelectric wafer, a wave-absorbing material and a signal amplification module, and is characterized in that the piezoelectric wafer and the wave-absorbing material are mounted in the probe frame according to a certain angle; the signal excitation module and the signal amplification module are arranged above the piezoelectric wafer, the input of the signal excitation module is connected with the probe joint input interface, and the output is connected to the piezoelectric wafer. The system has the beneficial effects that the ultrasonic signal excitation module and the signal amplification module are integrated; the equivalent signal-to-noise ratio of the probe is improved; the anti-interference capability of the probe is improved; and the requirement of an ultrasonic instrument is reduced.

Description

technical field [0001] The invention belongs to non-destructive testing ultrasonic testing, in particular to an ultrasonic probe with an integrated signal excitation and amplification module. Background technique [0002] In the field of ultrasonic testing of non-destructive testing, ultrasonic testing probe, as a kind of acoustic-electric transducer, is an important component in ultrasonic testing. Ultrasonic signal, the sound wave signal propagates on the inspected object, reflects back, passes through the piezoelectric chip on the probe, and converts the sound wave signal into a weak electrical signal, which is returned to the ultrasonic instrument for collection and processing. [0003] The traditional ultrasonic probe consists of the following parts: electrical signal connector, piezoelectric chip (divided into transmitting chip and receiving chip, or mixed chip), wedge, absorbing material, and probe frame. The piezoelectric chip converts the energy signal emitted by th...

Claims

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Application Information

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IPC IPC(8): G01N29/24G01N29/44H03F1/26H03F1/32
CPCG01N29/2437G01N29/44H03F1/26H03F1/32
Inventor 罗玉文甘文军滕木陈飞
Owner RES INST OF NUCLEAR POWER OPERATION