发明名称 |
Distance detection system |
摘要 |
A distance detection system is disclosed. The distance detection system includes an electric-field forming apparatus and an electric-field receiving apparatus. Quasi-electrostatic-field forming means is included in the electric-field forming apparatus. The quasi-electrostatic-field forming means is for forming quasi-electrostatic fields for a plurality of frequencies. The intensity of the quasi-electrostatic field for each frequency falls below a predetermined threshold intensity at a different distance from the quasi-electrostatic-field forming means. Distance detection means is included in either one of the electric-field forming apparatus and the electric-field receiving apparatus. The distance detection means is for detecting a distance between the electric-field forming apparatus and the electric-field receiving apparatus, based on the frequency of a quasi-electrostatic field received by the electric-field receiving apparatus. |
申请公布号 |
US8314619(B2) |
申请公布日期 |
2012.11.20 |
申请号 |
US20040558921 |
申请日期 |
2004.05.19 |
申请人 |
TAKIGUCHI KIYOAKI;SONY CORPORATION |
发明人 |
TAKIGUCHI KIYOAKI |
分类号 |
G01C15/00;G01R31/28;G01R27/26;G01R29/12;G01S11/06;H04B7/24 |
主分类号 |
G01C15/00 |
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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