发明名称 |
Sonic track condition determination system |
摘要 |
Sonic transponders mounted on a train and the track upon which it rolls transmit and receive sonic vibrations along the track. Information currently being transmitted electrically may also be thus transmitted sonically. Since the track interferes with the sonic vibration more than it does with an electrical signal, the condition of the track may also be determined.
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申请公布号 |
US4932618(A) |
申请公布日期 |
1990.06.12 |
申请号 |
US19890336361 |
申请日期 |
1989.04.11 |
申请人 |
ROCKWELL INTERNATIONAL CORPORATION |
发明人 |
DAVENPORT, JOE L.;SIMARD, DOMINIC L. |
分类号 |
B61L1/02;B61L23/04 |
主分类号 |
B61L1/02 |
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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