Entry point opening sensor

Patent metadata

Field	Value
Publication number	US-9747769-B2
Application number	US-201614991108-A
Country	US
Kind code	B2
Filing date	Jan 8, 2016
Priority date	Dec 30, 2014
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

A sensor package is disclosed that includes, a compass, an accelerometer, and an electromagnetic flux tag based open/close sensor. The compass may be activated by a microcontroller in response to an indication of movement detected by an accelerometer. The compass's data may be utilized to determine an orientation for the object such as a door on which the sensor package is situated. The orientation data may indicate that the door is ajar and/or that a second magnetic field is present, suggesting tampering. A notice may be dispatched to a controller for the home security system, a client device, a remote system, etc.

First claim

The invention claimed is:

1. A computer-implemented method, comprising:
receiving, by a computing device, a first indication from an electromagnetic flux based sensor;
receiving, by the computing device, a second indication from an accelerometer situated on an object, the accelerometer associated with a sensor package further comprising a compass, the sensor package associated with the object, and the object having an orientation;
determining, by the computing device, an inconsistency of the first indication and the second indication with a motion profile, wherein the determined inconsistency indicates a tampering of at least the sensor package by a magnetic source;
sending, by the computing device, an activation signal to the compass in response to the determined inconsistency;
receiving, by the computing device, an orientation signal from the compass; and
determining, by the computing device, a change in the orientation of the object based at least upon the orientation signal from the compass.

2. The method of claim 1 , wherein the object comprises at least one of a door, a window, a shutter, a skylight, and a vent opening.

3. The method of claim 1 , wherein the object has a first surface and a second surface and wherein the accelerometer is situated on the first surface and the compass is situated on the second surface.

4. The method of claim 3 , wherein the first surface is the same as the second surface.

5. The method of claim 4 , wherein the accelerometer and compass are integrated into a single sensor package.

6. The method of claim 1 , further comprising generating a notice in response to the change in the orientation of the object.

7. The method of claim 6 , wherein the notice is selected form the group consisting of: a door open alert, a door close alert, an alarm, and a reset alert.

8. The method of claim 6 , further comprising receiving, from a client device associated with an authorized occupant, a reset signal in response to the notice.

9. The method of claim 6 , further comprising:
authenticating a user; and
receiving from the authenticating user a reset signal in response to the notice.

10. The method of claim 1 , further comprising:
generating a security breach message; and
sending the security breach message to a third party, wherein a notice indicates a security breach.

11. The method of claim 10 , wherein the security breach message includes at least one from the group of: an address, a security status, an authorized occupancy status, a telephone number, an image, and a video.

12. The method of claim 1 , further comprising receiving, by the sensor package, power from a common power source.

13. The method of claim 1 , wherein the electromagnetic flux based sensor is selected from the group consisting of:
a sensor comprising a near field communication (NFC) tag and a reader;
a sensor comprising a radio frequency identification (RFID) tag and a reader; and
an inductive loop sensor.

14. A computer-implemented method, comprising:
receiving input from an accelerometer;
receiving input from a compass;
receiving input from an electromagnetic flux based sensor;
wherein the accelerometer, the compass, and the electromagnetic flux based sensor are associated with a given object;

comparing the accelerometer input, the compass input, and the electromagnetic flux based sensor input to accelerometer data, compass data, and electromagnetic flux data stored as a motion profile for the given object;
based on the comparison, determining that at least one of the accelerometer input, the compass input, and the electromagnetic flux based sensor input are inconsistent with the motion profile and that the determined inconsistency indicates a tampering of at least the compass by a magnetic source; and
generating a notice in response to the determined inconsistency.

15. The method of claim 14 , wherein the given object is a door attached to a wall with at least one hinge mechanism, wherein the inconsistency comprises accelerometer input that indicates a displacement greater than a maximum displacement of the door about the at least one hinge mechanism.

16. The method of claim 14 , wherein the given object comprises a door, further comprising:
determining a first orientation change based on the accelerometer input; and
determining a second orientation change based on the compass input, wherein the second orientation differs from the first orientation.

17. The method of claim 16 , wherein the first orientation change is less than the second orientation change.

18. The method of claim 14 , wherein the notice is selected from the group consisting of: a tamper alert, a door open alert, a door close alert, an alarm, and a reset alert.

19. The method of claim 14 , wherein the electromagnetic flux based sensor is selected from the group consisting of:
a sensor comprising a near field communication (NFC) tag and a reader;
a sensor comprising a radio frequency identification (RFID) tag and a reader; and
an inductive loop sensor.

20. A system, comprising:
a computer-readable storage medium, configured to store data generated by a sensor package comprising at least an accelerometer and a compass, the sensor package associated with an object having an orientation;
a processor communicatively coupled to the storage medium, the processor configured to:
receive a first indication from an electromagnetic flux based sensor;
receive a second indication from the accelerometer;
determine an inconsistency of the first indication and the second indication with a motion profile, wherein the determined inconsistency indicates a tampering of at least the electromagnetic flux based sensor by a magnetic source;
send an activation signal to the compass in response to the determined inconsistency;
receive an orientation signal from the compass;
determine a change in the orientation of the object based at least upon the orientation signal from the compass.

21. The system of claim 20 , wherein the object comprises at least one of a door, a window, a shutter, a skylight, and a vent opening.

22. The system of claim 20 , wherein the object has a first surface and a second surface and wherein the accelerometer is situated on the first surface and the compass is situated on the second surface.

23. The system of claim 22 , wherein the first surface is the same as the second surface.

24. The system of claim 23 , wherein the accelerometer and compass are integrated into a single sensor package.

25. The system of claim 20 , the processor further configured to generate a notice in response to the change in the orientation of the object.

26. The system of claim 25 , wherein the notice is selected form the group consisting of: a door open alert, a door close alert, an alarm, and a reset alert.

27. The system of claim 25 , the processor further configured to receive, from a client device associated with an authorized occupant, a reset signal in response to the notice.

28. The system of claim 25 , the processor further configured to:
authenticate a user; and
receive from the authenticating user a reset signal in response to the notice.

29. The system of claim 20 , the processor further configured to:
generate a security breach message; and
sending the security breach message to a third party, wherein a notice indicates a security

Assignees

• Google Inc

Inventors

• Peterson Kevin Charles
• Le Guen Sophie
• Modi Yash
• Deluliis Julia

Classifications

• G08B25/008

  Alarm setting and unsetting, i.e. arming or disarming of the security system · CPC title

• E05B47/06

  Controlling mechanically-operated bolts by electro-magnetically-operated detents · CPC title

• G08B13/08

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

• G08B13/2491 Primary

  Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field · CPC title

• G01P15/00

  Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration · CPC title