- 专利标题: Load board with embedded relay tracker
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申请号: US10805954申请日: 2004-03-22
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公开(公告)号: US20050218899A1公开(公告)日: 2005-10-06
- 发明人: Vivien Wong , Wai Phoon
- 申请人: Vivien Wong , Wai Phoon
- 主分类号: G01R31/02
- IPC分类号: G01R31/02 ; G01R31/327
摘要:
A load board includes an embedded relay tracker circuit that counts and stores relay clicks to measure relay usage. Having accurate relay usage data reduces maintenance costs. The relay tracker circuit includes a controller with a counter for counting relay clicks of the load board relays and wires or conductive traces connecting the controller to the relays. Each time a relay switches, a signal is transmitted from the relay to the controller and the controller increments the counter. The count information then is stored in a memory connected to the counter.
公开/授权文献
- US06972571B2 Load board with embedded relay tracker 公开/授权日:2005-12-06