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1. WO1996041408 - TELEMETRY AND CONTROL SYSTEM USING BURST MODE COMMUNICATION

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

CLAIMS

1. Apparatus for transmitting and receiving telemetry and control signals superposed on a direct current circuit in the presence of ambient electrical noise, comprising:

a transmitter including:

means for generating a signal having a
frequency in excess of about 10 megaHertz,

means for selectively interrupting the
continuity of generation of said signal so
as to provide an encoded signal, and

means for superposing said encoded signal on
said direct current circuit ; and

a receiver including:

means for differentiating and integrating said
encoded signal to remove ambient
background electrical noise therefrom,

means for comparing said differentiated and
integrated signal with a predetermined
code sequence , and

means for performing a function based upon said
comparison.

2. Apparatus according to claim 1, said frequency being in excess of 100 megaHertz.

3. Apparatus according to claim 1, said frequency being in the VHF frequency range.

4. Apparatus according to claim 1, said frequency being in the UHF frequency range.

5. Apparatus according to claim 1, said means for generating said signal further comprising incidence frequency means for triggering said signal .

6. Apparatus according to claim 1, said means for generating said signal comprising:

means for generating an incidence frequency which is at least approximately an order of magnitude
lower than the frequency of said signal; and

means for triggering said signal generating means to produce separated output waves therefrom,
spaced on the incidence frequency baseline.

7. Apparatus according to claim 1, said means for generating said signal comprising:

a tank circuit having a resonant frequency in excess of 10 megaHertz;

an oscillator having a square wave output voltage,
the frequency thereof being at least
approximately one order of magnitude lower than said resonant frequency; and a switch having first and second switch connections and a switch control input, said square wave
output frequency being connected to said switch control input, said tank circuit being
i connected to said first switch connection its
emitter and said second switch connection being grounded, whereby each square wave triggers a
full wave output from said tank circuit at said resonant frequency.

8. Apparatus according to claim 7, said switch
comprising a transistor.

9. Apparatus according to claim 1, said means for superposing said encoded signal further comprising:

a tank circuit having a resonant frequency output in excess of 10 megaHertz, said tank circuit being connected to said direct current circuit; and

means for interrupting the continuity of said
resonant frequency output to carry an encoded
signal.

10. Apparatus according to claim 1, said means for selectively interrupting the continuity of the generation of said signal comprising:

incidence frequency means for triggering said
waveform; and

means for mixing an encoded sequence with said
incidence frequency.

11. Apparatus according to claim 1 wherein said encoded signal is encoded in a binary code.

12. Apparatus according to claim 44, said
differentiating and integrating means further comprising:

means for differentiating the frequencies and noise on said direct current line to select
frequencies in the range of said signal
frequency so as to attenuate the relative level of frequencies and the ambient noise not in
said range; and

means for integrating the output of said
differentiating means so as to reconstitute
said encoded signal sequence.

13. Apparatus according to claim 1, said differentiating and integrating means further comprising:

first means for differentiating the frequencies and noise on said direct current circuit to select frequencies in the range of said signal
frequency so as to attenuate the relative level of frequencies and ambient noise not in said
range ;

second means for differentiating the frequencies and noise in the output of said first
differentiating means to select frequencies in the range of said incidence frequency so as to attenuate the relative level of frequencies and ambient noise not in said range; and means for integrating the output of said second
differentiating means so as to reconstitute
said encoded signal sequence.

14. Apparatus according to claim 1, further comprising means for repeating a succession of iterations of said encoded signal sequence to assure affirmation of an uncontaminated sequence .

15. Apparatus for encoding an encoded signal sequence to be superposed on a direct current circuit in the presence of ambient electrical noise comprising:

means for generating a signal waveform, the
effective frequency thereof being in excess of about 10 megaHertz; and

means for selectively interrupting the continuity of said waveform so as to provide an encoded
signal .

16. Apparatus for encoding an encoded signal sequence in accordance with claim 15, said means for selectively interrupting comprising:

incidence frequency means for triggering said
waveform at a frequency at least approximately an order of magnitude lower than said effective frequency; and

means for mixing an encoded sequence with said
incidence frequency so as to express said
decoded sequence in bursts of waves of said
effective frequency.

17. Apparatus for transmitting an encoded signal sequence in accordance with claim 15, said means for generating comprising a tank circuit having a resonant frequency output in excess of about 10 megaHertz, an I input of said tank circuit being connected to said incidence frequency means and an output of said tank circuit being connected to said direct current circuit .

18. Apparatus according to claim 15, said encoded signal is being encoded in a binary code.

19. Apparatus for transmitting an encoded signal
sequence in accordance with claim 16, said means for mixing comprising is an and logic gate .

20. Apparatus for receiving an encoded signal sequence transmitted in bursts of waves of a predetermined
frequency and superposed on a direct current circuit in the presence of ambient electrical noise comprising:

means for coupling to said direct current circuit to block direct current voltage levels while
passing alternating current signals;

means for differentiating the frequencies and noise passing said coupling means to select
frequencies in the range of said predetermined frequency so as to attenuate the relative level of background noise not in said range; and

means for integrating the output of said
differentiating means so as to recover said
encoded signal sequence .

21. Apparatus according to claim 20, further comprising means for clamping an output of said coupling means to remove excess voltage spikes .

22. Apparatus according to claim 20, further comprising means for repeating a succession of iterations of said encoded signal sequence to assure reception of an
uncontaminated sequence .

23. Apparatus according to claim 20, said
differentiating means comprising a single stage band pass filter.

24. Apparatus according to claim 20, said
differentiating means comprising two stages of band pass filters .

25. A function control relay for an electrical circuit comprising:

an encoded signal receiver;

a comparator, connected to the output of the
receiver, for comparing an encoded signal
received to a predetermined function code so as to enable the relay to execute a command;

a relay for controlling an electrical function; and

means for actuating said relay in response to a
command .

26. A function control relay according to claim 25, said receiver comprising an radio frequency receiver.

27. A function control relay according to claim 25, said receiver comprising a DC code receiver.

28. A function control relay according to claim 25, said comparator comprising a logic device.

29. A function control relay according to claim 25, said comparator comprising a logic device with memory
capability.

30. Apparatus according to claim 25, said encoded signal being encoded in a binary code .

31. A function control relay according to claim 25, further comprising:

a relay base having a plurality of connectors
arranged in a pattern conforming to a
standardized automotive relay base pattern; and

means for selectively making and breaking
electrical continuity across a pair of
said connectors as a function of an output
of said comparator.

32. A function control relay according to claim 31, said means for selectively making and breaking comprising a transistor having an emitter and collector thereof connected across a pair of said connecting prongs.

33. A function control relay according to claim 25, further comprising, means for transmitting an encoded signal including:

means for generating a voltage waveform having
an effective frequency in excess of about
10 megaHertz;

means for selectively interrupting the
continuity of generation of said waveform
so as to provide an encoded signal; and

means for superposing said encoded signal on
said direct current circuit .

34. A function control relay according to claim 33, said means for transmitting the encoded signal further
comprising incidence frequency means for triggering said voltage waveform.

35. A function control relay according to claim 34, said means for transmitting the encoded signal further comprising:

means for generating an incidence frequency
which is at least approximately an order
of magnitude lower than the effective
frequency of said waveform; and

means for triggering said effective frequency
generating means to produce separated output waves therefrom, spaced on the
incidence frequency baseline.

36. A function control relay according to claim 35, said means for transmitting the encoded signal further
comprising:

a tank circuit having a resonant frequency in excess of about 10 megaHertz;

an oscillator having a square wave output
voltage, the frequency thereof being at
least approximately one order of magnitude
lower than said resonant frequency; and

a transistor receiving said square wave output
frequency at its base, having said tank
circuit connected to its emitter and
having its collector grounded so that each
square wave triggers a single full wave
output from said tank circuit at said
resonant frequency.

37. A function control relay according to claim 25, said amplifier further comprising:

an amplifier circuit having input and output
terminals;

means for AC coupling said input terminal to the
electrical circuit to pass any voltage
perturbation therein; and

a feedback circuit connecting the output of said
amplifier circuit to the input thereof so as to return a signal thereto and amplify any voltage perturbation in the electrical circuit.