发明名称 |
Optical measuring apparatus for measuring objects on machines |
摘要 |
A light source generates a beam of light which is incident on a detector which generates a trigger signal when the beam incident upon it is occluded by a tool. To avoid trigger signals being produced when the beam is temporarily occluded by coolant drips passing through the beam, the detector produces a detection signal each time the beam is occluded, but only produces a trigger signal if a further detection signal is produced in a specified time interval from the generation of an earlier detection signal. Samples of the detection signal are stored in a buffer. When these stored signals indicate a repetitive pattern a trigger signal is issued. <IMAGE> |
申请公布号 |
EP1562020(A1) |
申请公布日期 |
2005.08.10 |
申请号 |
EP20050075841 |
申请日期 |
2000.11.17 |
申请人 |
RENISHAW PLC |
发明人 |
STIMPSON, VICTOR GORDON;FUGE, JON PAUL;DAVIES, WILLIAM KENNETH;LEETE, NORMAN JOHN;BELL, COLIN TIMOTHY |
分类号 |
B23B49/00;B23Q17/20;B23Q17/22;B23Q17/24;G01B11/00;G01B11/02;G01B21/04;G01V8/10;G01V8/12;H03K17/94;(IPC1-7):G01B11/00 |
主分类号 |
B23B49/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|