发明名称 |
AUTOMATED SIGN INVENTORY SYSTEM |
摘要 |
A system for automating maintenance and inventory of roadway signs and structures equips such signs and structures with transponders for electromagnetic communication. Further, the signs and structures have a memory that stores information relating to the signs and structures. An in-vehicle unit is placed in a vehicle and communicates with the transponders in the signs to identify and receive information from the signs. The in-vehicle unit further has memory for storing information relating to each sign. A location module and graphical user interface assist in navigation and identification of signs. After installation, maintenance or evaluation of a sign is complete, the memory in the sign is updated as well as the memory in the in-vehicle unit. A central database stores information relating to all signs.
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申请公布号 |
WO9635196(A1) |
申请公布日期 |
1996.11.07 |
申请号 |
WO1996US05826 |
申请日期 |
1996.04.26 |
申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
BANTLI, HEINRICH;IHLENFELDT, LYNN, D.;KRUSE, JOHN, M. |
分类号 |
G07C5/00;G07C3/00;G08G1/00;G08G1/09;G09F19/22;(IPC1-7):G08G1/00;G06F17/60 |
主分类号 |
G07C5/00 |
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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