发明名称 |
Method for monitoring an entrance to a hazardous area |
摘要 |
A method for monitoring an entrance to a hazardous area comprising sensing a signal pattern generated by light barriers when an object passes the entrance and comparing the sensed signed pattern with at least one predetermined signal pattern. The object is admissible if the signal patterns are identical and under certain other conditions.
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申请公布号 |
US2002017603(A1) |
申请公布日期 |
2002.02.14 |
申请号 |
US20010922829 |
申请日期 |
2001.08.06 |
申请人 |
HABERER HERMANN;ROHBECK VOLKER |
发明人 |
HABERER HERMANN;ROHBECK VOLKER |
分类号 |
G01V8/20;(IPC1-7):H01J40/14 |
主分类号 |
G01V8/20 |
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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