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Smart-home security system with keypad device resistant to anomalous treatment

  • US 10,089,842 B2
  • Filed: 10/07/2014
  • Issued: 10/02/2018
  • Est. Priority Date: 10/07/2013
  • Status: Active Grant
First Claim
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1. A system for detecting tampering of a security keypad device, the system comprising:

  • the security keypad device comprising;

    a keypad,a high power wireless module configured to transmit and receive data wirelessly via a local area network,a low power wireless module configured to transmit and receive data wirelessly at a lower rate of data transfer than the high power wireless module, and further configured to consume less power than the high power wireless module,a cellular module configured to transmit and receive data wirelessly via a wide area network,a power cord configured to transfer power to the security keypad device from a primary power source, wherein the security keypad device is configured to remain moveably detached from a home in which the security keypad device is located;

    a battery compartment configured to hold a secondary power source,an active infrared (IR) position sensor including a light source configured to emit IR light and an IR sensor configured to detect reflected IR light of objects or walls within the home, the active IR position sensor being incorporated as part of the security keypad device and configured to determine a position of the security keypad device within the home based on measuring a time-of-flight of the reflected IR light,an accelerometer configured to measure an acceleration force, anda processor configured to;

    receive positional data from the active IR position sensor,receive acceleration data from the accelerometer,determine that the position of the security keypad device changed based on the positional data, andtransmit a tampering event to a computer server system in response to determining that the position of the security keypad device changed, the tampering event indicating that the security keypad device has been physically tampered with; and

    the computer server system being communicatively coupled to the security keypad device and configured to;

    receive the tampering event, andtransmit the tampering event to a mobile device that is authorized to access an account associated with the security keypad device.

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