发明名称 |
Inductive rotational speed sensors |
摘要 |
An inductive rotational speed sensor assembly includes a first PCB with a transmitter coil configured to convert an alternating electrical input into an alternating magnetic field. A second PCB is operatively connected to the first PCB for relative rotation and includes a resonance coil configured to couple to the alternating magnetic field of the first PCB to output a modulating position signal. The first PCB includes a receiver coil configured to receive the first and the modulating position signal and to output a signal indicative of rotational speed of the second PCB relative to the first PCB. |
申请公布号 |
US9285386(B2) |
申请公布日期 |
2016.03.15 |
申请号 |
US201414188720 |
申请日期 |
2014.02.25 |
申请人 |
Rosemount Aerospace Inc. |
发明人 |
Huynh Cuong T.;Essawy Magdi A. |
分类号 |
G01P3/48;G01P3/488;G01D5/20 |
主分类号 |
G01P3/48 |
代理机构 |
Locke Lord LLP |
代理人 |
Locke Lord LLP ;Wofsy Scott D.;Fiorello Daniel J. |
主权项 |
1. A method of converting an electrical signal to a rotational speed comprising:
converting an alternating electrical input to an alternating magnetic field using a transmitter coil of a first PCB; receiving the alternating magnetic field with a resonance coil of a second PCB rotating relative to the first PCB; emitting a modulating position signal from the resonance coil of the second PCB; receiving the modulating position signal with a receiver coil of the first PCB; outputting a signal indicative of rotational speed from the first PCB; and converting the output signal to an angular frequency Ω=360°/nT, where Ω is an angular speed in degrees per second, n is a number of receiver coil pole pairs on the first PCB, and T is a period of the outputted signal. |
地址 |
Burnsville MN US |