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Self-propelled electronic device

  • US 9,340,116 B2
  • Filed: 11/19/2012
  • Issued: 05/17/2016
  • Est. Priority Date: 01/17/2012
  • Status: Active Grant
First Claim
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1. A self-propelled electronic device that is supplied with power from a charging base installed in a predetermined position and automatically travels to a position away from the charging base, the self-propelled electronic device comprising:

  • a travelling control unit that makes the self-propelled electronic device move automatically by controlling a rotation of a wheel;

    a rechargeable battery that supplies power for performing travelling control during the automatic travelling;

    a charging base searching unit that searches for a position of the charging base;

    a control unit;

    whereinwhen the control unit determines that returning to the charging base is required, the control unit performs return processing by which the self-propelled electronic device is made to come to rest and then rotate in a resting state by the travelling control unit and, when the charging base searching unit searches for a direction in which the charging base lies and detects the direction in which the charging base lies, the self-propelled electronic device moves in the direction in which the charging base lies;

    a remaining battery level detecting unit that detects a remaining battery level of the rechargeable battery; and

    a storage unit that stores in advance battery information which is compared with the detected remaining battery level;

    whereinwhen the detected remaining battery level becomes less than or equal to a first remaining level threshold value P1 stored as the battery information, the control unit determines that returning to the charging base is required and performs the return processing.

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