Telemetry of diagnostic messages from a mobile asset to a remote station
First Claim
1. A telemeter carried on board a mobile asset such as an aircraft, said aircraft having avionics equipment on board for communicating on VHF or UHF bands, said telemeter comprising:
- a processor coupled to the output of one or more condition sensors;
said processor configured to convert the output signal of said one or more condition sensors to a diagnostic message, and to provide said diagnostic message at a processor output; and
a transmitter coupled to said processor output, said transmitter including circuitry for transmitting said diagnostic message via a spread spectrum signal having a spreading factor of at least about 10 in an Industrial Scientific Medical (ISM) radio frequency band, said transmitter operable while said aircraft is in flight and adapted to utilizc said avionics equipment to communicate with a relay station when said avionics equipment is not communicating on VHF or UHF bands.
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Accused Products
Abstract
A telemeter for telemetry of diagnostic messages from a mobile asset to a remote station comprises a processor coupled to the output of one or more condition sensors. The processor converts the output of the condition sensors to a diagnostic message, and provides the diagnostic message at a processor output. A transmitter is coupled to the processor output. The transmitter is adapted to transmit the diagnostic messages in the Industrial, Scientific, Medical (ISM) frequency band. An exemplary embodiment of a telemetry system of the invention comprises a telemeter adapted to transmit diagnostic messages in the ISM frequency band, and a remote station including a receiver for receiving the diagnostic messages in the ISM band.
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Citations
17 Claims
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1. A telemeter carried on board a mobile asset such as an aircraft, said aircraft having avionics equipment on board for communicating on VHF or UHF bands, said telemeter comprising:
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a processor coupled to the output of one or more condition sensors;
said processor configured to convert the output signal of said one or more condition sensors to a diagnostic message, and to provide said diagnostic message at a processor output; and
a transmitter coupled to said processor output, said transmitter including circuitry for transmitting said diagnostic message via a spread spectrum signal having a spreading factor of at least about 10 in an Industrial Scientific Medical (ISM) radio frequency band, said transmitter operable while said aircraft is in flight and adapted to utilizc said avionics equipment to communicate with a relay station when said avionics equipment is not communicating on VHF or UHF bands. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
a receiver coupled to said processor, said receiver configured to receive diagnostic messages transmitted in an Industrial Scientific Medical (ISM) radio frequency band.
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5. The telemeter of claim 4 wherein said receiver is further configured to receive commands transmitted from a ground station in a radio frequency band.
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6. The telemeter of claim 1 wherein said condition sensor includes an exhaust gas temperature sensor.
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7. The telemeter of claim 1 wherein said condition sensor is a turbine speed sensor.
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8. The telemeter of claim 1 wherein said processor includes:
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a diagnostic message processor comprising;
a message assembler adapted to receive said digital data from said sensor output, and for converting said digital data into one or more diagnostic messages and for providing said diagnostic messages to an assembler output;
a memory for receiving and storing said diagnostic messages from said assembler output and from said receiver; and
a router for directing said diagnostic messages to designated destinations.
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9. The telemeter of claim 1 wherein said condition sensor is a core speed sensor.
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10. The telemeter of claim 1 wherein said telemeter is carried upon an aircraft.
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11. The telemeter of claim 1 wherein said telemeter is carried upon a locomotive.
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12. The telemeter of claim 1 wherein said telemeter is carried upon a ship.
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13. A telemetry system according to claim 1 wherein said device adapted to utilize said information is a display.
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14. A telemetry system according to claim 1 wherein said transmitter transmits electromagnetic energy in the 3.2 GHz ISM Band.
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15. A telemetry system comprising:
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a telemeter carried on board a mobile asset, said asset having radio communications equipment on board for communicating on VHF or UHF bands, said telemeter including;
an input coupled to the output of one or more condition sensors of said asset;
an output for providing diagnostic messages containing information related to the sensed performance of said asset;
a transmitter having an input coupled to said output of said telemeter, said transmitter including circuitry for transmitting said diagnostic messages in an ISM frequency band via a spread spectrum signal having a spreading factor of at least about 10; and
a remote station comprising;
a receiver for receiving said transmitted messages;
a processor for processing said transmitted messages; and
an output for providing information related to the performance of said asset to a device adapted to utilize said information;
said transmitter being adapted to utilize said radio communications equipment to communicate with said remote station when said radio communications equipment is not communicating on VHF or UHF bands.- View Dependent Claims (16, 17)
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Specification