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1. 发明授权

US3623101A Rf position-sensing and control system 失效
标题翻译：射频位置传感与控制系统
公开(公告)号：US3623101A
公开(公告)日：1971-11-23
申请号：US3623101D
申请日：1968-07-11
申请人： AMP INC
发明人： GREBE ROBERT KARL , KREINBERG EARL RAYMOND
IPC分类号： G01S11/02 , G01S19/35 , G05D15/01 , G01S11/00
CPC分类号： G05D15/01 , G01S11/023
摘要： Method and means are disclosed for sensing and detecting the position of a member by the effect of the member on the coupling between sensing elements separately connected to an RF transmitter and an RF receiver. The sensing elements are disposed to provide a degree of coupling therebetween related to the physical position of the member between such elements and to produce a sensed signal indication of either member position or member presence. The sensed signal is detected and applied to a utility device which may be in the form of an alarm, counter indicator, recorder, or in the form of a motor to provide a feedback signal capable of altering the position of the sensed member. In one form of the invention a wire or strip feeding control apparatus senses the position of a free-hanging span of the wire or strip to develop a reel-motor control signal and adjust the fall or sag of the span, thereby controlling feed rate and wire or strip tension. For nonconductive sensed members or for fluids a conductive element is carried in a frame of dielectric material in the plane of the sensing element coupling which restricts the sensed member to movement along an axis bisecting the zone of coupling of the transmitting and receiving antenna elements.

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