Piezoelectric cable-based monitoring system

• US 7,667,599 B2
• Filed: 01/24/2007
• Issued: 02/23/2010
• Est. Priority Date: 03/10/2000
• Status: Expired due to Fees

• Current Assignee: Radio Systems Corporation
• Original Assignee: Radio Systems Corporation
• Inventors: Boyd, Randal D., Mainini, Christopher E.
• Primary Examiner(s): La; Anh V
• Application Number:
  US11/626,837
• Publication Number:
  US 20070120667A1
• Time in Patent Office: 1,126 Days
• Field of Search: 340/565, 340/686.1, 340/541, 340/540, 340/544, 340/545.4, 340/550, 340/693.5, 340/933, 340/573.1, 375/228
• US Class Current: 340/565
• CPC Class Codes: G08B 13/122 for a perimeter fence features peculiar to electrified fences A01K3/00
• CPC Class Codes: G08B 13/126 for a housing, e.g. a box, a safe, or a room
• CPC Class Codes: G08B 13/1654 using passive vibration detection systems
• CPC Class Codes: G08B 13/169 using cable transducer means

Abstract

A system for monitoring and distinguishing occurrences along a perimeter bounded by a plurality of piezoelectric cables. The monitoring system utilizes a plurality of piezoelectric cables that generate electrical signals in response to mechanical stress events. The electrical signals from each piezoelectric cable are analyzed by a base unit to determine event classification and location. The monitoring system alerts users and connects to an existing security system to notify third-parties. The monitoring system includes functionality to communicate with a calibration unit and calibrate itself. The monitoring system also includes functionality to interface with a pet containment system.

Claims

1. A piezoelectric security system for monitoring a selected area, said piezoelectric security system comprising:

a plurality of piezoelectric cables positioned along the selected area, said plurality of piezoelectric cables defining a plurality of unique combinations, each of said plurality of unique combinations defining a zone, each of said plurality of piezoelectric cables producing an electrical signal in response to a mechanical force;

a processor in communication with said plurality of piezoelectric cables, said processor responsive to each said electrical signal produced by said plurality of piezoelectric cables, said processor detecting an intrusion event when at least one electrical signal is received, said processor identifying said zone based on receipt of a plurality of electric signals corresponding to one of said plurality of unique combinations of piezoelectric cables, said processor producing an alert signal in response to said intrusion event, said alert signal containing information including at least said zone; and

a communication device for communicating said alert signal.

2. The piezoelectric security system of claim 1 wherein each of said plurality of piezoelectric cables has a portion not contiguous with at least one other of said plurality of piezoelectric cables.

3. The piezoelectric security system of claim 1 wherein said communication device is an indicator providing an indication selected from the group consisting of audible indications and visual indications.

4. The piezoelectric security system of claim 1 wherein said communication device is an external interface for communicating said alert signal to an external device.

5. The piezoelectric security system of claim 1 further comprising a calibration unit positioned proximate to said plurality of piezoelectric cables, said calibration unit responsive a calibration request from said processor, said calibration unit generating a mechanical force detectable by said plurality of piezoelectric cables as a calibration signal, said calibration signal being compared to a set of expected results thereby allowing said processor to detect intrusion events.

6. The piezoelectric security system of claim 1 further comprising a piezoelectric cable interface connected to said plurality of piezoelectric cables and in communication with said processor, said processor receiving said electrical signals through piezoelectric cable interface, said piezoelectric cable interface making said electrical signals usable by said processor.

7. The piezoelectric security system of claim 1 wherein said communication device is a transmitter for broadcasting said alert signal, said piezoelectric security system further comprising:

a receiver in communication with said transmitter, said receiver receiving said alert signal; and

an indicator in communication with said receiver, said indicator providing an indication selected from the group consisting of audible indications and visual indications.

8. The piezoelectric security system of claim 1 further comprising:

a wire-loop defining a boundary around a containment area including at least a portion of the selected area;

a containment signal generator in electrical communication with said wire-loop, said containment signal generator producing a containment signal carried by said wire-loop;

a receiver carried by an animal, said receiver responsive to said containment signal;

a processing device in communication with said receiver, said processing device producing a stimulus signal when said containment signal is received; and

a stimulus delivery mechanism in communication with said processing device, said stimulus delivery mechanism applying a stimulus to the animal upon receipt of said stimulus signal.

9. The piezoelectric security system of claim 1 wherein said alert signal contains information corresponding to one or more of a time of said intrusion event and a date of said intrusion event.

10. The piezoelectric security system of claim 1 further comprising a memory device in communication with said processor, said memory device storing reference information for comparison with said electrical signal whereby said intrusion event is classified as being generated by a vehicle, a human being, or an animal.

11. The piezoelectric security system of claim 1 further comprising a memory device in communication with said processor, said memory device storing information about each said intrusion event for later recall.

12. A piezoelectric security system for monitoring a selected area, said piezoelectric security system comprising:

a plurality of piezoelectric cables positioned along the selected area, each of said plurality of piezoelectric cables having a portion overlapping at least a portion of at least one other of said plurality of piezoelectric cables, each of said plurality of piezoelectric cables having at least a portion that does not overlap any portion of any other said plurality of piezoelectric cables, each of said plurality of piezoelectric cables producing an electrical signal in response to a mechanical force;

a processor in communication with said plurality of piezoelectric cables, said processor responsive to at least a first electrical signal and a second electrical signal, said processor detecting an intrusion event when at least one of said first electrical signal and said second electrical signal is received, said processor identifying an intrusion zone based which of said first electrical signal and said second electrical signal are received, said processor producing an alert signal in response to said intrusion event, said alert signal containing information including at least said intrusion zone; and

a communication device for communicating said alert signal.

13. The piezoelectric security system of claim 12 wherein each of said plurality of piezoelectric cables is a different length from each other of said plurality of piezoelectric cables.

14. The piezoelectric security system of claim 12 further comprising a piezoelectric cable interface connected to said plurality of piezoelectric cables and in communication with said processor, said processor receiving said electrical signals through piezoelectric cable interface, said piezoelectric cable interface making said electrical signals usable by said processor.

15. The piezoelectric security system of claim 12 further comprising a memory device in communication with said processor, said memory device storing reference information for comparison with said electrical signal whereby said intrusion event is classified as being generated by a vehicle, a human being, or an animal.

16. The piezoelectric security system of claim 12 further comprising a memory device in communication with said processor, said memory device storing information about each said intrusion event for later recall.

17. The piezoelectric security system of claim 12 wherein said communication device is a transmitter for broadcasting said alert signal, said piezoelectric security system further comprising:

a receiver in communication with said transmitter, said receiver receiving said alert signal; and

an indicator in communication with said receiver, said indicator providing an indication selected from the group consisting of audible indications and visual indications.

18. The piezoelectric security system of claim 12 further comprising:

a wire-loop defining a boundary around a containment area including at least a portion of the selected area;

a containment signal generator in electrical communication with said wire-loop, said containment signal generator producing a containment signal carried by said wire-loop;

a receiver carried by an animal, said receiver responsive to said containment signal;

a processing device in communication with said receiver, said processing device producing a stimulus signal when said containment signal is received; and

a stimulus delivery mechanism in communication with said processing device, said stimulus delivery mechanism applying a stimulus to the animal upon receipt of said stimulus signal.

19. A piezoelectric security system for monitoring a selected area defining a first section and a second section, the first section being distinct from said second section, said piezoelectric security system comprising:

a first piezoelectric cable positioned along the first section of the selected area thereby defining a first zone, said first piezoelectric cable producing a first electrical signal in response to mechanical stress transferred to said first cable;

a second piezoelectric cable positioned along the second section of the selected area thereby defining a second zone, said second piezoelectric cable producing a second electrical signal in response to mechanical force transferred to said second cable;

a processor in communication with said first piezoelectric cable and said second piezoelectric cable, said processor responsive to at least one of said first electrical signal and said second electrical signal, said processor detecting an intrusion event when at least one of said first electrical signal and said second electrical signal is received, said processor identifying an intrusion zone based on receipt of at least one of said first electrical signal and said second electrical signal, said processor producing an alert signal in response to said intrusion event, said alert signal containing information including at least said intrusion zone; and

a communication device for communicating said alert signal.

20. The piezoelectric security system of claim 19 further comprising a piezoelectric cable interface connected to said plurality of piezoelectric cables and in communication with said processor, said processor receiving said electrical signals through piezoelectric cable interface, said piezoelectric cable interface making said electrical signals usable by said processor.

21. The piezoelectric security system of claim 19 wherein said second piezoelectric cable is positioned along both said first portion and said second portion.

22. The piezoelectric security system of claim 19 wherein said second piezoelectric cable is positioned along both said first section and said second section.

23. The piezoelectric security system of claim 19 wherein said second piezoelectric cable is positioned along a portion the first section and said first piezoelectric cable is positioned along a portion of the second section thereby defining a third zone where said first piezoelectric cable and said second piezoelectric cable overlap.

24. The piezoelectric security system of claim 19 wherein said communication device is an interface adapted to communicate said alert signal to a residential and light commercial security system.

25. The piezoelectric security system of claim 19 wherein said communication device is an indicator providing an indication selected from the group consisting of audible indications and visual indications.

26. The piezoelectric security system of claim 19 wherein said alert signal contains information corresponding to one or more of a time of said intrusion event and a date of said intrusion event.

27. The piezoelectric security system of claim 19 further comprising:

a wire-loop defining a boundary around a containment area including at least a portion of the selected area;

a containment signal generator in electrical communication with said wire-loop, said containment signal generator producing a containment signal carried by said wire-loop;

a receiver carried by an animal, said receiver responsive to said containment signal;

a processing device in communication with said receiver, said processing device producing a stimulus signal when said containment signal is received; and

a stimulus delivery mechanism in communication with said processing device, said stimulus delivery mechanism applying a stimulus to the animal upon receipt of said stimulus signal.

28. A piezoelectric security system for monitoring a selected area, said piezoelectric security system comprising:

a plurality of piezoelectric cables positioned along the selected area, each of said plurality of piezoelectric cables has a portion not contiguous with at least one other of said plurality of piezoelectric cables thereby defining a plurality of unique combinations, each of said plurality of unique combinations being a zone, each of said plurality of piezoelectric cables producing an electrical signal in response to a mechanical force;

a processor in communication with said plurality of piezoelectric cables, said processor responsive to each said electrical signal produced by said plurality of piezoelectric cables, said processor detecting an intrusion event when at least one electrical signal is received, said processor identifying said zone based on receipt of a plurality of electric signals corresponding to one of said plurality of unique combinations of piezoelectric cables, said processor producing an alert signal in response to said intrusion event, said alert signal containing information including at least said zone;

an indicator for communicating said alert signal, said indicator providing an indication selected from the group consisting of audible indications and visual indications.

29. The piezoelectric security system of claim 28 further comprising an external interface for communicating said alert signal to an external device.

30. The piezoelectric security system of claim 28 further comprising a calibration unit positioned proximate to said plurality of piezoelectric cables, said calibration unit responsive a calibration request from said processor, said calibration unit generating a mechanical force detectable by said plurality of piezoelectric cables as a calibration signal, said calibration signal being compared to a set of expected results thereby allowing said processor to detect intrusion events.

31. The piezoelectric security system of claim 28 further comprising a memory device in communication with said processor, said memory device storing information about each said intrusion event for later recall.

32. The piezoelectric security system of claim 28 further comprising a memory device in communication with said processor, said memory device storing reference information for comparison with said electrical signal whereby said intrusion event is classified as being generated by a vehicle, a human being, or an animal.

33. The piezoelectric security system of claim 28 further comprising:

a wire-loop defining a boundary around a containment area including at least a portion of the selected area;

a containment signal generator in electrical communication with said wire-loop, said containment signal generator producing a containment signal carried by said wire-loop;

a receiver carried by an animal, said receiver responsive to said containment signal;

a processing device in communication with said receiver, said processing device producing a stimulus signal when said containment signal is received; and

a stimulus delivery mechanism in communication with said processing device, said stimulus delivery mechanism applying a stimulus to the animal upon receipt of said stimulus signal.