Systems and methods of dynamically varying a pre-alarm time of a security system

• US 9,552,719 B1
• Filed: 07/16/2015
• Issued: 01/24/2017
• Est. Priority Date: 07/16/2015
• Status: Active Grant

• Current Assignee: Google LLC (Alphabet Inc.)
• Original Assignee: Google Inc. (Alphabet Inc.)
• Inventors: Dey, Sourav Raj, Malhotra, Mark Rajan, Modi, Yash
• Primary Examiner(s): PHAM, TOAN NGOC
• Application Number:
  US14/800,863
• Publication Number:
  US 20170018167A1
• Time in Patent Office: 558 Days
• Field of Search: 340/528, 340/517, 340/511, 340/541, 340/565, 340/545.6, 340/545.7, 340/545.8, 340/545.9
• US Class Current: 1/1
• CPC Class Codes: G08B 25/002 Generating a prealarm to the central station
• CPC Class Codes: G08B 25/008 Alarm setting and unsetting, i.e. arming or disarming of the security system
• CPC Class Codes: G08B 25/14 Central alarm receiver or annunciator arrangements
• CPC Class Codes: G08B 29/20 Calibration, including self-calibrating arrangements

Abstract

Systems and methods of adjusting a pre-alarm time are provided, including detecting, by a sensor, an entry into a building by a person and generating detection data according to the detected entry. A processor communicatively coupled to the sensor adjusts a pre-alarm time according to the detection data. An alarm is output, by an alarm device communicatively coupled to at least the processor, according to the detection data and the adjusted pre-alarm time.

Claims

1. A security system comprising:

a sensor to detect an entry into a building by a person, and generate detection data according to the detected entry;

a processor communicatively coupled to the sensor to receive the detection data, and to adjust a pre-alarm time according to the detection data; and

an alarm device, communicatively coupled to at least the processor, that outputs an alarm according to the detection data and the adjusted pre-alarm time.

2. The system of claim 1, wherein the processor is configured to determine, according to the detection data, whether the person is an authorized user.

3. The system of claim 2, wherein the processor is configured to adjust the pre-alarm time so as to reduce the pre-alarm time when the person is not an authorized user.

4. The system of claim 2, wherein the processor is configured to adjust the pre-alarm time so as to increase the pre-alarm time when the person is determined to be an authorized user.

5. The system of claim 4, wherein the processor is configured to adjust the pre-alarm time based on the authorized user.

6. The system of claim 1, wherein the processor is configured to determine, at least according to the detection data, a location of the entry of the person.

7. The system of claim 6, wherein the processor adjusts the pre-alarm time at least according to the determined location of the entry of the person.

8. The system of claim 6, wherein the processor includes a threat estimator that is configured to determine a threat level at least according to the determined location of the entry.

9. The system of claim 8, wherein the threat estimator of the processor is configured to determine the threat level at least based on a time of day.

10. The system of claim 9, wherein the pre-alarm time generator is configured to determine the pre-alarm time according to a selection by a user.

11. The system of claim 8, wherein the processor includes a pre-alarm time generator that is configured to adjust a pre-alarm time according to the determined threat level.

12. The system of claim 1, wherein the processor includes an alarm manager configured to determine the amount of time spent in a pre-alarm state and to determine whether to control the alarm device to output an alarm.

13. The system of claim 1, further comprising a database of events, wherein the processor is configured to determine whether the entry detected by the sensor is typical based on the database of events.

14. The system of claim 13, wherein the processor is configured to adjust the pre-alarm time according to the determination of whether the detected entry is typical based on the database of events.

15. The system of claim 13, wherein the processor is configured to determine whether one or more events after the detected entry is typical based on the database of events.

16. The system of claim 1, wherein the sensor includes a first sensor and a second sensor, and the processor is configured to adjust the pre-alarm time according to the detection data received from at least one of the first sensor and the second sensor.

17. The system of claim 16, wherein the processor is configured to adjust the pre-alarm time differently for the first sensor and the second sensor.

18. The system of claim 16, wherein the processor is configured to adjust the pre-alarm time according to a sequence of events received from the first sensor and the second sensor.

19. A method comprising:

detecting, by a sensor, an entry into a building by a person and generating detection data according to the detected entry;

adjusting, by a processor communicatively coupled to the sensor, a pre-alarm time according to the detection data; and

outputting an alarm, by an alarm device communicatively coupled to at least the processor, according to the detection data and the adjusted pre-alarm time.

20. The method of claim 19, further comprising:

determining, according to the detection data, whether the person is an authorized user.

21. The method of claim 20, further comprising:

adjusting, by the processor, the pre-alarm time so as to reduce the pre-alarm time when the person is not an authorized user.

22. The method of claim 20, further comprising:

adjusting, by the processor, the pre-alarm time so as to increase the pre-alarm time when the person is determined to be an authorized user.

23. The method of claim 22, further comprising:

adjusting, by the processor, the pre-alarm time based on the authorized user.

24. The method of claim 19, further comprising:

determining, by the processor, a location of the entry of the person according to the detection data.

25. The method of claim 24, further comprising:

adjusting, by the processor, the pre-alarm time according to the determined location of the entry of the person.

26. The method of claim 25, further comprising:

determining, by a threat estimator of the processor, a threat level according to the determined location of the entry.

27. The method of claim 26, further comprising:

determining, by the threat estimator of the processor, the threat level at least based on a time of day.

28. The method of claim 26, further comprising:

adjusting, by a pre-alarm time generator of the processor, a pre-alarm time according to the determined threat level.

29. The method of claim 28, further comprising:

determining, by the pre-alarm time generator, the pre-alarm time according to a selection by a user.

30. The method of claim 19, further comprising:

determining, by an alarm manager of the processor, the amount of time spent in a pre-alarm state and determining whether to control the alarm device to output an alarm.

31. The method of claim 19, further comprising:

determining, by a database of events and the processor, whether the entry detected by the sensor is typical based on the database of events.

32. The method of claim 31, further comprising:

adjusting, by the processor, the pre-alarm time according to the determination of whether the detected entry is typical based on the database of events.

33. The method of claim 31, further comprising:

determining, by the processor, whether one or more events after the detected entry is typical based on the database of events.

34. The method of claim 19, further comprising:

adjusting, by the processor, the pre-alarm time according to the detection data received from at least one of a first sensor and a second sensor that are included in the sensor.

35. The method of claim 34, further comprising:

adjusting, by the processor, the pre-alarm time differently for the first sensor and the second sensor.

36. The method of claim 34, further comprising:

adjusting, by the processor, the pre-alarm time according to a sequence of events received from the first sensor and the second sensor.