发明名称 |
Digital inductive position sensor |
摘要 |
A differential pulse transformer having a drive coil (10a) and differential sense coils (10b) are disposed on a planar surface with a target (10e, 10f) movable over the sense coils to cause an imbalance in magnetic field when a large di/dt pulse is generated in the drive coil. A detection circuit senses the imbalance and provides a digital output accurately identifying the position of the target. Coil and target embodiments include relatively small secondary coils and relatively long targets (10b, 10e/10f; 12b, 12e/12f and 14b) and relatively large secondary coils and short targets (16b, 16c; 18b, 18c; 20b and 22b).
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申请公布号 |
US6642711(B2) |
申请公布日期 |
2003.11.04 |
申请号 |
US20020043406 |
申请日期 |
2002.01.10 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
KAWATE KEITH W.;FOELSCHE GERHARD A.;HUANG LIDU;FLEISCHFRESSER GERALD H. |
分类号 |
G01B7/00;G01D5/20;G01D5/22;(IPC1-7):G01B7/00;G01B7/14;G01B7/30;H03M1/22 |
主分类号 |
G01B7/00 |
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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