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Economical motor vehicle operation during a parked phase

  • US 9,820,234 B2
  • Filed: 05/28/2015
  • Issued: 11/14/2017
  • Est. Priority Date: 06/07/2014
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • operating a control unit of a motor vehicle during a parked phase in which an ignition of the motor vehicle is switched off, wherein the control unit comprises;

    an electronic monitoring unit comprising a mobile radio module, wherein the electronic monitoring unit is configured to perform a service routine, the service routine comprising setting up a radio connection with a server outside the motor vehicle using the mobile radio module, anda power supply for supplying the electronic monitoring unit with electrical energy from an on-board electrical network of the motor vehicle, wherein the power supply electrically separates the electronic monitoring unit from the on-board electrical network as a function of an ignition-off signal transmitted in the motor vehicle for initiation of the parked phase;

    setting a timer of a clock on the control unit to a first time by the power supply during the parked phase, wherein the power supply switches off after setting the timer of the clock on the control unit to the first time;

    generating a first wake-up signal as a function of a current time indication determined by the clock on the control unit;

    switching the power supply on as a function of the first wake-up signal using a wake-up device of the power supply;

    electrically connecting the electronic monitoring unit to the on-board electrical network using the power supply after the power supply has been switched on as a function of the first wake-up signal;

    receiving, at the mobile radio module, a message signal signaling a presence of message data via the radio connection;

    generating, at the mobile radio module, a second wake-up signal as a function of the message signal;

    activating, at the power supply, a main processor of the control unit as a function of the second wake-up signal;

    retrieving, using the main processor, the message data via the radio connection; and

    setting the control unit as a function of the message data,wherein the power supply counts repetitions of the service routine carried out since the ignition-off signal using a repetition counter and sets the timer of the clock on the control unit to a second time as a function of the repetition counter.

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