Non-destructive examination device
First Claim
1. A non-destructive examination device, comprising:
- excitation current generation means for generating an excitation current and supplying said excitation current;
control means for generating a control signal to control operation of said excitation current generation means and for transmitting said control signal to said excitation generation means;
vibration excitor means for receiving said excitation current and for generating an elastic wave in accordance with a magnitude of said excitation current and for vibrating an examination target to be examined by using said elastic wave;
response detection means for detecting a vibration of said examination target responding to said elastic wave and for transforming said vibration to an electrical signal and for providing said electrical signal;
signal processing means for receiving said electrical signal and for processing said electrical signal in order to obtain desired examination information; and
amplifier means located between said excitation current generation means and said vibration excitor means for amplifying said excitation current and for generating an excitation current having a desired magnitude, and for providing said amplified excitation current to said vibration excitor means;
wherein said signal processing means receives said excitation current generated by said excitation current generation means, and adds and averages said electrical signal provided from the response detection means at a constant timing rate in accordance with the vibration of said vibration excitor means imparted to said examination target, based on a trigger generated when said excitation current is detected.
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Accused Products
Abstract
A non-destructive examination device has an excitation current generation device for supplying an excitation current based on a control signal from a control device, a vibration excitor device for generating an elastic wave in accordance with athe excitation current and for vibrating an examination target to be examined by using the elastic wave; a response detection device (an acceleration sensor) for detecting a response of the vibration of the examination target caused by the elastic wave and for processing the response data in order to select desired examination information. The excitation current generation device generates the excitation current of an alternating pulse wave such as a pulse wave, or a rectangular wave, or a triangular wave, or a sine wave based on the control signal which is also a pulse signal. It can be acceptable to incorporate a plurality of the vibration excitor devices on the examination target in the non-destructive examination device.
19 Citations
15 Claims
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1. A non-destructive examination device, comprising:
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excitation current generation means for generating an excitation current and supplying said excitation current; control means for generating a control signal to control operation of said excitation current generation means and for transmitting said control signal to said excitation generation means; vibration excitor means for receiving said excitation current and for generating an elastic wave in accordance with a magnitude of said excitation current and for vibrating an examination target to be examined by using said elastic wave; response detection means for detecting a vibration of said examination target responding to said elastic wave and for transforming said vibration to an electrical signal and for providing said electrical signal; signal processing means for receiving said electrical signal and for processing said electrical signal in order to obtain desired examination information; and amplifier means located between said excitation current generation means and said vibration excitor means for amplifying said excitation current and for generating an excitation current having a desired magnitude, and for providing said amplified excitation current to said vibration excitor means; wherein said signal processing means receives said excitation current generated by said excitation current generation means, and adds and averages said electrical signal provided from the response detection means at a constant timing rate in accordance with the vibration of said vibration excitor means imparted to said examination target, based on a trigger generated when said excitation current is detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A non-destructive examination device, comprising:
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excitation current generation means for generating an excitation current and supplying said excitation current; control means for generating a control signal to control operation of said excitation current generation means and for transmitting said control signal to said excitation generation means; vibration excitor means for receiving said excitation current and for generating an elastic wave in accordance with a magnitude of said excitation current and for vibrating an examination target to be examined by using said elastic wave; response detection means for detecting a vibration of said examination target responding to said elastic wave and for transforming said vibration to an electrical signal and for providing said electrical signal; signal processing means for receiving said electrical signal and for processing said electrical signal in order to obtain desired examination information; and said signal processing means receives said excitation current generated by said excitation current generation means, and adds and averages said electrical signal provided from the response detection means at a constant timing rate in accordance with the vibration of said vibration excitor means imparted to said examination target, based on a trigger generated when said excitation current is detected.
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Specification