ECONOMICAL MOTOR VEHICLE OPERATION DURING A PARKED PHASE
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Abstract
The invention relates to a method for operating a control unit of a motor vehicle during a parked phase. It is the object of the invention to achieve an economical operation during the parked phase and in so doing to perform the service routine. For this purpose, the power supply sets a timer of a clock in the parked phase and then switches itself off. The timer generates a wake-up signal as a function of a current time indication determined by the clock, and a wake-up device of the power supply switches the power supply on again as a function of the wake-up signal. The power supply that has been switched on again then electrically connects the monitoring unit to the on-board network.
23 Citations
18 Claims
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1-8. -8. (canceled)
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9. A method, comprising:
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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 vehicle using the mobile radio module, and a 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 monitoring unit from the on-board electrical network as a function of an ignition-off signal transmitted in the motor vehicle for the initiation of the parked phase; setting a timer of a clock a first time on the control unit by the power supply during the parked phase, wherein the power supply switches itself off a first time after setting the timer the first time; generating a first wake-up signal as a function of a current time indication determined by the clock; switching the power supply on again as a function of the wake-up signal using a wake-up device of the power supply; electrically connecting the monitoring unit to the on-board electrical network using the switched on power supply; receiving, at the mobile radio module, a message signal signaling the presence of message data via the radio connection; generating, at the mobile radio module, a second wake-up signal in the control unit 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, by means of 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 the repetitions of the service routine carried out since the ignition-off signal by means of a repetition counter and sets a first timer value in the timer as a function of the repetition counter. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A control unit for a motor vehicle, comprising:
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an electronic monitoring unit for performing a service routine; a power supply for supplying the monitoring unit with electrical energy from an on-board electrical network of the motor vehicle; and a clock with a timer, wherein the power supply comprises a wake-up device for switching the power supply on as a function of a wake-up signal of the timer. - View Dependent Claims (16)
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17. A motor vehicle, comprising:
at least one control unit, wherein the control unit comprises; an electronic monitoring unit for performing a service routine; a power supply for supplying the monitoring unit with electrical energy from an on-board electrical network of the motor vehicle; and a clock with a timer, wherein the power supply comprises a wake-up device for switching the power supply on as a function of a wake-up signal of the timer. - View Dependent Claims (18)
Specification