发明名称 |
Vehicle-detecting unit for use with electronic parking meter |
摘要 |
A vehicle detector unit and detection method for use with an electronic parking meter for providing the electronic parking meter with the ability to reliably detect the presence or absence of a vehicle in any existing corresponding parking space, independent of the surrounding environment, while using a minimum of power.
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申请公布号 |
US6229455(B1) |
申请公布日期 |
2001.05.08 |
申请号 |
US19990270548 |
申请日期 |
1999.03.17 |
申请人 |
INTELLIGENT DEVICES, INC. |
发明人 |
YOST VINCENT G.;SAAR DAVID A. |
分类号 |
G07F17/24;(IPC1-7):G08G1/04 |
主分类号 |
G07F17/24 |
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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