Container inspection system
AssigneeHajime Industries Ltd.
InventorHajime Yoshida
Life of this patent
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Abstract
A container inspection system is disclosed in which an ultrasonic wave pulse is impinged on an object such as a container to be detected or inspected, the ultrasonic wave pulse modulated with the inherent vibration of the object is received, the modulated ultrasonic wave pulse is converted into a corresponding electrical signal, and the electrical signal is compared with a reference signal for discriminating whether the container is good or not. This system further includes a device for segregating bad and good objects in response to the inspection result thereof.
Claims10
An object inspection system comprising:
- (a) ultrasonic wave transmitting means positioned a substantial distance apart from an object to be inspected for generating an ultrasonic wave for a constant time period and impinging said ultrasonic wave on said object;
- (b) means for receiving a modulated ultrasonic wave after the end of said time period modulated by said object at its inherent vibration frequency in response to the energy of said applied ultrasonic wave;
- (c) means for producing an electrical signal corresponding to said modulated ultrasonic wave;
- and
- (d) means for comparing said electrical signal with a reference signal to discriminate at least one property of said object.
An object inspection system comprising:
- (a) ultrasonic wave transmitting means positioned a substantial distance apart from an object to be inspected for generating an ultrasonic wave for a constant time period and impinging said ultrasonic wave on said object;
- (b) conveyor means for conveying said object near said ultrasonic wave transmitting means;
- (c) means for receiving an ultrasonic wave after the end of said time period modulated by said object at its inherent vibration frequency in response to the energy of said applied ultrasonic wave;
- (d) means for producing an electrical signal corresponding to said modulated ultrasonic wave;
- (e) means for comparing said electrical signal with a reference signal to discriminate at least one property of said object;
- (f) means for detecting an arrival of said object at a predetermined position and for driving said ultrasonic wave transmitting means and impinging said ultrasonic wave on said predetermined position;
- and
- (g) means for segregating said object in response to the discrimination of said comparing means.
A method for inspecting an object comprising:
- (a) generating an ultrasonic pulse for a predetermined time;
- (b) impinging said ultrasonic pulse on said object from a position spaced a substantial distance apart from said object;
- (c) modulating said ultrasonic pulse by said object at its inherent vibration frequency in response to the energy of the applied ultrasonic wave to produce a modulated ultrasonic signal;
- (d) detecting said modulated ultrasonic signal after the end of said predetermined time;
- and
- (e) judging at least one property of said object on the basis of the detected modulated ultrasonic signal.
Dependencies are inferred from the claim text.