发明名称 |
Optical sensing system for detecting welds and defects in metal |
摘要 |
An optical sensing system for detecting welds and defects in metal brightly illuminates a broad section of the metal and images a swath of the metal onto a multi-element detector array, generating voltage signals representing the reflectivity of the swath of the metal as it passes under the detector. A processor system detects areas of low reflectivity and indicates a defect. A slit mask placed in front of the detector array narrows the imaged swath to reduce false accepts. A color filter in front of the detector array reduces ambient light interference. The processor system incorporates an auto-calibration function to compare the current signal to an averaged reference signal.
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申请公布号 |
US6563575(B1) |
申请公布日期 |
2003.05.13 |
申请号 |
US20000636482 |
申请日期 |
2000.08.10 |
申请人 |
AUTOMATED TECHNOLOGY SERVICES, INC. |
发明人 |
NICHOLS RANDALL WILLIAM;MAYDEW KENNETH WAYNE |
分类号 |
G01N21/88;(IPC1-7):G01N21/86 |
主分类号 |
G01N21/88 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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