Patent ID: 6397681
Filing Date: 2002-06-04
Classification: G01N

Abstract:
A portable ultrasonic detector comprising:a moved distance instrument comprised of an encoder for detecting a moved amount and a counting section for counting the moved amount based on a detection signal outputted from said encoder; a movable wire incorporated within said encoder, wherein the detection signal outputted from said encoder is determined by a moved amount of said movable wire; an ultrasonic probe connected to a tip of said movable wire; an ultrasonic wave inspecting section for producing A-scope data when scanning an inspected object with said ultrasonic probe; and an arithmetic processing section that receives moved distance data of said ultrasonic probe that is measured by said moved distance instrument, said processing section including means for generating images by combining the A-scope data with the moved distance data; wherein, while repeatedly scanning the same spot of said object with said ultrasonic probe, peaks of defect echo waves generated in every scan are stored in groups in a memory and at least two peaks of defects are indicated as the generated image.