Multiple data channel wireless data coupling system for transmitting measured data from a plurality of rotating sources
First Claim
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1. A multiple data channel wireless data coupling system for transmitting measured data from a plurality of rotating sources producing data source signals to a stationary receiver comprising:
- a stationary low frequency power source;
a plurality of high frequency transmitter means each corresponding to one of said plurality of rotating data sources and mounted for rotation therewith each of said transmitter means including oscillator means for generating a unique high frequency carrier signal to provide one of said data channels and including means for modulating said carrier signal with a corresponding data source signal, said oscillator means having a reference input for determining said unique carrier frequency;
coupling means for coupling said stationary low frequency power source to all of said rotating reference inputs;
demodulating means included in said stationary receiver for receiving said plurality of modulated carrier signals and for demodulating such signals to provide said data source signals; and
wireless coupling means for coupling said demodulating means to said transmitter means.
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Abstract
A multiple data channel wireless data coupling system which transmits measured data from a plurality of rotating data sources to a stationary receiver. It includes several rotating transmitters, each producing a unique carrier frequency, which are capacitively coupled to a stationary receiver. The transmitters are supplied power from a relatively low frequency power source through an inductive coupling. The low frequency power source is also utilized to synchronize all of the transmitters as well as the receiver.
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Citations
7 Claims
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1. A multiple data channel wireless data coupling system for transmitting measured data from a plurality of rotating sources producing data source signals to a stationary receiver comprising:
- a stationary low frequency power source;
a plurality of high frequency transmitter means each corresponding to one of said plurality of rotating data sources and mounted for rotation therewith each of said transmitter means including oscillator means for generating a unique high frequency carrier signal to provide one of said data channels and including means for modulating said carrier signal with a corresponding data source signal, said oscillator means having a reference input for determining said unique carrier frequency;
coupling means for coupling said stationary low frequency power source to all of said rotating reference inputs;
demodulating means included in said stationary receiver for receiving said plurality of modulated carrier signals and for demodulating such signals to provide said data source signals; and
wireless coupling means for coupling said demodulating means to said transmitter means. - View Dependent Claims (2, 3, 4, 5, 6)
- a stationary low frequency power source;
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7. A multiple data channel wireless data coupling system for transmitting measured data from a plurality of rotating sources producing data source signals to a stationary receiver comprising:
- a stationary low frequency power source;
a plurality of high frequency transmitter means each corresponding to one of said plurality of rotating data sources and mounted for rotation therewith each of said transmitter means including oscillator means for generating a unique high frequency carrier signal to provide one of said data channels and including means for modulating said carrier signal with a corresponding data source signal, coupling means for coupling said stationary low frequency power source to transmitter means;
demodulating means included in said stationary receiver for receiving said plurality of modulated carrier signals and for demodulating such signals to provide said data source signals; and
wireless capacitive coupling means for coupling said demodulating means to said transmitter means including a fixed ring and a plurality of rotating ring sectors spaced opposite said fixed ring each sector being connected to one of said plurality of high frequency transmitter means.
- a stationary low frequency power source;
Specification