Data communication and power transmission system for sensing devices

• US 6,999,857 B1
• Filed: 08/25/2003
• Issued: 02/14/2006
• Est. Priority Date: 08/25/2003
• Status: Expired due to Fees

• Current Assignee: Public Patent
• Original Assignee: the united states of america as represented by the secretary of the navy
• Inventors: Kasper, Rolf G., Hagerty, James D., Bandyopadhyay, Promode R., Bruno, Anthony B.
• Primary Examiner(s): Zanelli, Michael J.
• Assistant Examiner(s): Gibson, Eric M.
• Application Number:
  US10/652,085
• Time in Patent Office: 904 Days
• Field of Search: 701/1, 701/21, 701/35, 340/850, 340/852
• US Class Current: 701/1
• CPC Class Codes: H04B 17/327 Received signal code power [RSCP]

Abstract

A wireless power transmission and communication network that provides efficient interrogation and powering of sensors for use on undersea vehicles. The present invention employs a wave-guide that allows the propagation of electromagnetic waves through a dielectric material that covers the exterior of an undersea vehicle'"'"'s hull. Embedded within the dielectric material is an N dimensional array of Micro Electronic Mechanical Systems sensing devices coupled with radio frequency (RF) decoders and transceivers, and strips of conductive metal tape. Electromagnetic waves such as microwaves propagate through the dielectric material both powering the sensor network and addressing and interrogating individual sensing devices. The sensing devices take readings and then format and transmit the data results back across the wave-guide where they are received and processed by a digital processor within the hull of the undersea vehicle.

Claims

1. A sensor apparatus for disposition on the exterior surface of a vehicle, comprising:

a transmission medium comprising a dielectric material having a plurality of parallel strips of electrically conductive metal tape embedded there within, disposable over the exterior surface of the vehicle;

an electromagnetic energy source affixed to said transmission medium, for transmitting and receiving electromagnetic waves across said transmission medium;

a plurality of sensing devices disposed in communication with said transmission medium and over a pre-selected area of the exterior surface, said sensing devices capable of receiving electromagnetic waves generated by said electromagnetic energy source and extracting power and digital signals from said electromagnetic waves, said sensing devices further transmitting digital signals corresponding to sensed data to said electromagnetic energy source; and

a data processor connected to said electromagnetic energy source, said data processor controlling the operation of the electromagnetic energy source and processing transmitted digital signals received at the electromagnetic energy source.

2. An apparatus according to claim 1 wherein said electromagnetic energy source is a microwave transceiver.

3. An apparatus according to claim 2 wherein said sensing devices employ sensing device transceivers in electrical signal communication with said transmission medium for transmitting and receiving electromagnetic waves.

4. An apparatus according to claim 2 wherein said sensing devices employ a decoding device capable of decoding digital signals received from electromagnetic waves generated by said electromagnetic energy source.

5. An apparatus according to claim 4 wherein said decoding device is a digital cellular telephone integrated circuit.

6. A sensor apparatus for disposition on the exterior surface of a vehicle, comprising:

a transmission medium disposable over the exterior surface of the vehicle;

an electromagnetic energy source affixed to said transmission medium, for transmitting and receiving electromagnetic waves across said transmission medium;

a plurality of sensing devices disposed in communication with said transmission medium and over a pre-selected area of the exterior surface, said sensing devices capable of receiving electromagnetic waves generated by said electromagnetic energy source and extracting power and digital signals from said electromagnetic waves, said sensing devices further transmitting digital signals corresponding to sensed data to said electromagnetic energy source, said sensing devices employing a decoding device capable of decoding digital signals received from electromagnetic waves generated by said electromagnetic energy source; and

a data processor connected to said electromagnetic energy source, said data processor controlling the operation of the electromagnetic energy source and processing transmitted digital signals received at the electromagnetic energy source.

7. An apparatus according to claim 6 wherein said transmission medium comprises a dielectric material having a plurality of parallel strips of electrically conductive metal tape embedded there within.

8. An apparatus according to claim 7 wherein said electromagnetic energy source is a microwave transceiver.

9. An apparatus according to claim 8 wherein said sensing devices employ sensing device transceivers in electrical signal communication with said transmission medium for transmitting and receiving electromagnetic waves.

10. An apparatus according to claim 6 wherein said decoding device is a digital cellular telephone integrated circuit.

11. An apparatus according to claim 6 wherein said vehicle is a submerged underwater vehicle having a metal hull.

12. A sensor apparatus for disposition on the exterior surface of a vehicle, comprising:

a transmission medium disposable over the exterior surface of the vehicle said transmission medium comprising a dielectric material having a plurality of parallel strips of electrically conductive metal tape embedded there within;

an electromagnetic energy source affixed to said transmission medium, for transmitting and receiving electromagnetic waves across said transmission medium, said electromagnetic energy source comprising a microwave transceiver;

a plurality of sensing devices disposed in communication with said transmission medium and over a pre-selected area of the exterior surface, said sensing devices capable of receiving electromagnetic waves generated by said electromagnetic energy source and extracting power and digital signals from said electromagnetic waves, said sensing devices further transmitting digital signals corresponding to sensed data to said electromagnetic energy source, said sensing devices employing sensing device transceivers in electrical signal communication with said transmission medium for transmitting and receiving electromagnetic waves, said sensing devices employing a decoding device capable of decoding digital signals received from electromagnetic waves generated by said electromagnetic energy source; and

a data processor connected to said electromagnetic energy source, said data processor controlling the operation of the electromagnetic energy source and processing transmitted digital signals received at the electromagnetic energy source.

13. An apparatus according to claim 12 wherein said decoding device is a digital cellular telephone integrated circuit.

14. An apparatus according to claim 12 wherein said plurality of sensing devices are MEMS sensing devices.

15. An apparatus according to claim 12 wherein said microwave transceiver broadcasts a power signal at a first frequency and a data signal at a second frequency.

16. An apparatus according to claim 15 wherein said plurality of sensing devices have a first antenna for receiving said power signal and a second antenna for receiving said data signal.