Intelligent surveillance alarm system and method

• US 4,589,081 A
• Filed: 03/15/1983
• Issued: 05/13/1986
• Est. Priority Date: 03/15/1983
• Status: Expired due to Fees

• Current Assignee: Abbott Ralph E
• Original Assignee: Dynatrend Incorporated
• Inventors: Massa, Ronald J., LePage, Robert G., Ellis, Theodore R.
• Primary Examiner(s): Wise, Edward J.
• Application Number:
  US06/475,445
• Time in Patent Office: 1,155 Days
• Field of Search: 364/554, 364/550, 364/415, 340/540, 340/541, 340/825.31, 340/825.32, 340/825.33, 340/501
• US Class Current: 702/185
• CPC Class Codes: G08B 19/00 Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
• CPC Class Codes: G08B 23/00 Alarms responsive to unspecified undesired or abnormal conditions

Abstract

An anomaly detection system (10) and method including; a plurality of sensor means (12) for providing an output representative of the current operational environment of the subject premises. There are means (14), responsive to the output, for translating the output to a signal, and control means (18) for statistically defining the normal operational parameters of the subject premises.

Stochastic means (16), responsive to the output representatives of the current operational environment periodically adjust the definition of the normal operational parameters of the subject premises. There are processor means (20) for comparing the output representative of the current operational environment with the updated definition of the normal operational parameters of the subject premises, and for detecting a deviation therebetween. Output means (22), responsive to the means for comparing and detecting, provide an output representative of the detected deviation between the output representative of the current operational environment and the normal operation parameters of the subject premises. A plurality of response devices (24), responsive to the output means for providing a specific response sequence representative of the nature and location of the detected deviation.

Claims

1. An anomaly detection system comprising:

a plurality of sensor means for providing an output representative of the current operational environment of the subject premises;

means, responsive to said output, for translating said output to a signal;

control means for defining the normal operational parameters of said subject premises by specifying expected normal states of and a predetermined combination of required detection states for said sensor means;

stochastic means, responsive to said output representative of the current operational environment, for periodically adjusting said definition of said normal operational parameters of said subject premises to accommodate routine changes in the current operational environment;

processor means for comparing said output representative of said current operational environment with said updated definition of said normal operational parameters of said subject premises, and for detecting a deviation therebetween;

output means, responsive to said means for comparing and detecting, for providing an output representative of said detected deviation between said output representative of said current operational environment and said normal operation parameters of said subject premises; and

a plurality of response devices, responsive to said output means, for providing a specific response sequence representative of the nature and location of said detected deviation.

2. The anomaly detected system of claim 1 which includes a plurality of interdependent detection methods.

3. The anomaly detection system of claim 2 in which said interdependent detection methods are complementarily related such that attempts to defeat a specific said method of detection will increase the probability of detection by an alternate said detection methods.

4. The anomaly detection system of claim 3 in which said normal operating parameters include stochastic algorithms.

5. The anomaly detection system of claim 4 in which one of said interdependent detection methods employs said stochastic algorithms.

6. The anomaly detection system of claim 1 in which said updated normal operational parameters retain sensitivity to statistically significant changes indicative of an abnormal situation.

7. The anomaly detection system of claim 1 in which said normal operational parameters are implemented by the use of software logic.

8. The anomaly detection system of claim 7 in which said normal operational parameters can be modified manually by data entry.

9. The anomaly detection system of claim 8 in which said normal operational parameters can be modified automatically in response to changes in the characteristics of the subject premises to be protected.

10. The anomaly detection system of claim 1 in which said means for comparing includes a microprocessor.

11. The anomaly detection system of claim 1 in which said sensor means includes acoustical sensor devices.

12. The anomaly detection system of claim 1 in which said response devices initiate a specific response sequence which is dependent upon said detected deviation.

13. The anomaly detection system of claim 12 in which said specific response sequence is initiated in response to specific sensor state requirements and time-state conditions.

14. The anomaly detection system of claim 13 in which said specific response sequence is dependent on said specific sensor state requirements satisfied for each said time-state condition.

15. The anomaly detection system of claim 12 in which said specific response sequence is representative of the specific said sensor means delivering the anomalous signal.

16. The anomaly detection system of claim 12 in which said specific response sequence is representative of the location of the detected anomalous condition.

17. The anomaly detection system of claim 1 in which said means for comparing and detecting employs a comparision of said output representative of the current operational environment with a predetermined combination of required sensor switch states.

18. The anomaly detection system of claim 17 in which said predetermined combination of required sensor switch states includes conjunctive combinations.

19. The anomaly detection system of claim 17 in which said predetermined combination of required sensor switch states includes disjunctive combinations.

20. The anomaly detection system of claim 17 in which said predetermined combination of required sensor switch states includes threshold quantity combinations.

21. The anomaly detection system of claim 17 in which said predetermined combination of required sensor switch states includes temporal combinations.

22. The anomaly detection system of claim 17 in which said required sensor switch states are representative of the occurence of certain events.

23. The anomaly detection system of claim 17 in which said required sensor switch states are representative of the non-occurence of certain events.

24. The anomaly detection system of claim 17 in which one of a plurality of surrogate sensors is assigned to each said predetermined combination of required sensor switch states.

25. The anomaly detection system of claim 24 in which the sensor state of each said surrogate sensor is representative of the truth status of its associated said predetermined combination of required sensor switch states.

26. The anomaly detection system of claim 24 in which a required sensor state for each said surrogate sensor may be included as one element in a different said predetermined combination of required sensor switch states.

27. The anomaly detection system of claim 24 in which said predetermined combination of required sensor switch states includes a required sensor state for one of said surrogate sensors.

28. The anomaly detection system of claim 24 in which said predetermined combination of required sensor switch states includes a plurality of required sensor states for an associated plurality of said surrogate sensors.

29. The anomaly detection system of claim 24 in which the hierchical arrangement of a plurality of said predetermined combination of required sensor switch states, each including a required sensor state for at least one of said surrogate sensors, provides complete Boolean logic capabilities.

30. An anomaly detection method comprising:

providing an output representative of the current operational environment of the subject premises;

translating said output to a signal;

defining the normal operational parameters of said subject premises by specifying an expected normal output and a predetermined combination of required detection states for the current operational environment;

adjusting said definition of said normal operational parameters of said subject premises to accommodate routine changes in the current operational environment;

comparing said output representative of said current operational environment with said updated definition of said normal operational parameters of said subject premises, and detecting a deviation therebetween;

providing an output representative of said detected deviation between said output representative of said current operational environment and said normal operation parameters of said subject premises; and

providing a specific response sequence representative of the nature and location of said detected deviation.

31. The anomaly detection method of claim 30 in which said updated normal opperational parameters retain sensitivity to statistically significant changes indicative of an abnormal situation.

32. The anomaly detection method of claim 30 in which said normal operational parameters can be modified manually by data entry.

33. The anomaly detection method of claim 30 in which said normal operational parameters can be modified automatically in response to changes in the characteristics of the subject premises to be protected.

34. The anomaly detection method of claim 30 in which said response devices initiates a specific response sequence which is dependent upon said detected deviation.

35. The anomaly detection method of claim 34 in which said specific response sequence is initiated in response to specific sensor state requirements and time-stage conditions.

36. The anomaly detection method of claim 34 in which said specific response sequence is representative of the location of the detected anomalous condition.

37. The anomaly detection method of claim 30 which includes a plurality of inversely related detection modes.