发明名称 |
Method and apparatus for edge detection and location |
摘要 |
Method and apparatus are provided of a variety wherein a linear array of light emitting diodes (LEDs) are positioned at one side of a material having an edge to be detected. A photoresponsive receiver is positioned on the opposite side of the material at a predetermined stand-off distance from the LED array. The visual LEDs of the array are energized by a drive current which is pre-selected such that light emitting from each exhibits substantially uniform intensity at the photodetecting receiver when non-attenuated by the material. Additionally, the photodetector at the receiver is configured having a length of at least 6 cm to substantially improve edge related data collection. The improvements provide for substantially enhanced measurement accuracy and permit the detection of edges of transparent and semi-transparent materials.
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申请公布号 |
US5220177(A) |
申请公布日期 |
1993.06.15 |
申请号 |
US19910720260 |
申请日期 |
1991.06.24 |
申请人 |
HARRIS INSTRUMENT CORPORATION |
发明人 |
HARRIS, DAVID E. |
分类号 |
G01B11/02;G01B11/04;G01V8/20 |
主分类号 |
G01B11/02 |
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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