Systems and methods of adaptively adjusting a sensor of a security system

Patent metadata

Field	Value
Publication number	US-2016189531-A1
Application number	US-201414585301-A
Country	US
Kind code	A1
Filing date	Dec 30, 2014
Priority date	Dec 30, 2014
Publication date	Jun 30, 2016
Grant date	—

Abstract

Embodiments of the disclosed subject matter provide systems and methods of adaptively adjusting sensitivity of a sensor of a security system that provide a first sensor to detect a motion event of a door or window of a building, and a controller communicatively coupled to the first sensor, to determine whether the detected motion event is a human-caused motion event or a periodic motion event by a comparison between data of the detected motion event and stored motion data, and to generate a security exception when the detected motion event is determined to be a periodic motion event, where the controller adaptively adjusts a sensitivity of the first sensor to detect the motion event according to data aggregated by the first sensor over a predetermined period of time.

First claim

1 . A system comprising:
a first sensor to detect a motion event of a door or window of a building; and a controller communicatively coupled to the first sensor, to determine whether the detected motion event is a human-caused motion event or a periodic motion event by a comparison between data of the detected motion event and stored motion data, and to generate a security exception when the detected motion event is determined to be a periodic motion event, wherein the controller adaptively adjusts a sensitivity of the first sensor to detect the motion event according to data aggregated by the first sensor over a predetermined period of time.

2 . The system of claim 1 , further comprising:
a second sensor communicatively coupled to the controller, wherein the controller adaptively adjusts a first sensitivity level of the first sensor by comparing the first sensitivity level with a second sensitivity level of the second sensor.

3 . The system of claim 2 , wherein, when the first sensitivity level and the second sensitivity level are different from one another, the first sensitivity level is adjusted to match the second sensitivity level.

4 . The system of claim 1 , wherein the first sensor comprises at least one from a group consisting of: an electronic compass, an accelerometer, and a reed switch.

5 . The system of claim 1 , wherein the controller refrains from outputting a control signal to an alarm device when the controller generates the security exception.

6 . The system of claim 1 , wherein the controller refrains from outputting a notification message to a device when the controller generates the security exception.

7 . The system of claim 1 , wherein the first sensor enters a calibration mode to detect signature data for the motion event selected from the group consisting of: a door opening event, a door closing event, a window opening event, and a window closing event.

8 . The system of claim 7 , wherein the detected signature data from the calibration mode is transmitted from the first sensor to at least one from the group consisting of: a second sensor communicatively coupled to the first sensor, the controller, and a remote server communicatively coupled to the sensor.

9 . The system of claim 7 , wherein, when the data of the detected motion event is different from at least a portion of the signature data, the controller outputs a control signal to control an operation of the alarm device or transmits a notification message to a device communicatively coupled to the controller.

10 . The system of claim 9 , wherein the data of the motion event is different from the at least a portion of the signature data according to one from a group consisting of: motion in a different axis, motion having a different rotation, and motion in a different direction.

11 . The system of claim 1 , further comprising:
a second sensor communicatively coupled to the first sensor in the building, wherein when the first sensor and the second sensor detect the motion event within a preset period of time, the controller generates the security exception.

12 . A method comprising:
detecting, by a first sensor, a motion event of a door or window of a building; determining, by a controller communicatively coupled to the first sensor, whether the detected motion event is a human-caused motion event or a periodic motion event by comparing data of the detected motion event and stored motion data; generating, by the controller, a security exception when the detected motion event is determined to be a periodic motion event; and adaptively adjusting, by the controller, a sensitivity of the first sensor to detect the motion event according to data aggregated by the first sensor over a predetermined period of time.

13 . The method of claim 12 , further comprising:
adjusting, by the controller, a first sensitivity level of the first sensor by comparing the first sensitivity level with a second sensitivity level of a second sensor.

14 . The method of claim 13 , further comprising:
when the first sensitivity level and the second sensitivity level are different from one another, adjusting the first sensitivity level to match the second sensitivity level.

15 . The method of claim 12 , further comprising:
refraining from outputting, by the controller, the control signal to an alarm device when the controller generates the security exception.

16 . The method of claim 12 , further comprising:
refraining from outputting, by the controller, a notification message to a device when the controller generates the security exception.

17 . The method of claim 12 , further comprising:
entering, by the first sensor, a calibration mode to detect signature data for the motion event selected from the group consisting of: a door opening event, a door closing event, a window opening event, and a window closing event.

18 . The method of claim 17 , further comprising:
transmitting, by the first sensor, the detected signature data from the calibration mode to at least one from the group consisting of: a second sensor communicatively coupled to the first sensor, the controller, and a remote server communicatively coupled to the first sensor.

19 . The method of claim 17 , further comprising:
outputting, by the controller, a control signal to control an operation of an alarm device or a notification message to a device communicatively coupled to the controller when the data of the detected motion event is different from at least a portion of the signature data.

20 . The method of claim 19 , wherein the data of the detected motion event is different from a group consisting of: motion in a different axis, motion having a different rotation, and motion in a different direction.

21 . The method of claim 12 , wherein the controller generates the security exception when the first sensor and a second sensor detect the motion event within a preset period of time.

Assignees

• Google Inc

Inventors

• Modi Yash
• Peterson Kevin Charles
• Malhotra Mark Rajan

Classifications

• G08B13/08

  by opening, e.g. of door, of window, of drawer, of shutter, of curtain, of blind · CPC title

• G08B29/188

  Data fusion; cooperative systems, e.g. voting among different detectors · CPC title

• G08B29/24

  Self-calibration, e.g. compensating for environmental drift or ageing of components · CPC title

• G08B29/185 Primary

  Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system · CPC title