发明授权
- 专利标题： Proximity detection system with concurrent RF and magnetic fields
- 专利标题（中）： 具有并发RF和磁场的接近检测系统
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申请号： US13568674申请日： 2012-08-07
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公开(公告)号： US09081046B2公开(公告)日： 2015-07-14
- 发明人: Larry D. Frederick
- 申请人： Larry D. Frederick
- 申请人地址： US GA Sandy Springs
- 专利权人： Strata Safety Products, LLC
- 当前专利权人： Strata Safety Products, LLC
- 当前专利权人地址： US GA Sandy Springs
- 代理机构： Dickstein Shapiro LLP
- 主分类号： G01R7/14
- IPC分类号： G01R7/14 ; G01R33/02 ; G08B21/02 ; G08G1/16
摘要：
This disclosure provides a method and system for extending the capability of a proximity detection system that is based on use of low frequency magnetic fields, to avoid conflicts in crowded work sites. The improvement is attained by combining the advantages of these low frequency magnetic fields with the advantages of much higher frequency, radiated (RF) signals that are controlled to be produced at the same time, concurrent with each other, in a coordinated and/or synchronous manner.
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