发明名称 |
Electronic cross-level detection system |
摘要 |
An electronic levelling apparatus using an inclinometer mounted to a platform for sensing deviations from the horizontal and generating an output signal representative thereof, filtering the inclinometer output signal to remove electromagnetic and radio frequency interference, level-shifting the filtered inclinometer output signal to establish both positive and negative threshold voltages, determining positive and negative voltage level shifts to generate a level control signal therefrom and transmitting the level control signal to an actuating mechanism for maintaining the platform level.
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申请公布号 |
US4673854(A) |
申请公布日期 |
1987.06.16 |
申请号 |
US19840636718 |
申请日期 |
1984.08.01 |
申请人 |
SOUTHERN RAILWAY COMPANY |
发明人 |
PATTON, WESLEY H.;THOMPSON, JEFFREY L. |
分类号 |
B64C17/06;(IPC1-7):B64C17/06;E01B35/02 |
主分类号 |
B64C17/06 |
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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