发明名称 |
Proximity switch, a target, a system of such proximity switches and targets, and a method of determining the presence of a target by a proximity switch |
摘要 |
A proximity switch for detecting a target in proximity with the proximity switch as a wireless transmitter for transmitting a first pulsed signal having a first carrier frequency to the target. The proximity switch also includes a wireless receiver for receiving a second pulsed signal having a second carrier frequency different from the first carrier frequency from the target. The proximity switch has a controller for providing an output indicative of whether a predetermined correspondence is satisfied between the first and second pulsed signals.
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申请公布号 |
US6603306(B1) |
申请公布日期 |
2003.08.05 |
申请号 |
US20020959168 |
申请日期 |
2002.02.08 |
申请人 |
JOKAB SAFETY AB |
发明人 |
OLSSON TORGNY;WIDELL GUNNAR;LINGER MATS |
分类号 |
H03K17/945;(IPC1-7):G01B7/14 |
主分类号 |
H03K17/945 |
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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