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Motion detection device and system for motion controlled switching of a peripheral device

  • US 10,133,247 B2
  • Filed: 09/26/2014
  • Issued: 11/20/2018
  • Est. Priority Date: 12/18/2013
  • Status: Active Grant
First Claim
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1. A motion detection device for motion controlled switching of a peripheral device having a switching characteristic, the motion detection device comprising:

  • a motion detector configured to provide detection signals in response to detected motions;

    a memory configured to store durations between the provided detection signals;

    a signal generator configured to output a switching signal to the peripheral device for switching the peripheral device from a first operation mode to a second operation mode for an activation period; and

    a controller configured to control the signal generator, wherein the controller is configured to determine the activation period based on at least;

    (a) a selection of the durations between the detection signals stored in the memory, (b) the switching characteristic of the peripheral device, and (c) a plurality of different predetermined maximum times of inactivity of a person being in a detection field of the motion detector, wherein each of the predetermined maximum times of inactivity is associated with a different respective time of day, wherein the controller is further configured to overwrite the stored durations based on a movement measurement period;

    a timer configured to determine durations between two subsequent detection signals provided by the motion detector during a predetermined time period; and

    a filter configured to;

    receive the determined durations from the timer for the two subsequent detection signals; and

    output during the predetermined time period only those determined durations that are longer than a first predetermined maximum time of inactivity from the plurality of different predetermined maximum times of inactivity of a person being in a detection field of the motion detector;

    wherein the memory is further configured to receive the filtered durations from the filter and to store only the filtered durations for the two subsequent detection signals.

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