Method and smartkey system for reducing battery consumption
AssigneeHyundai Mobis Co., Ltd.
InventorSoo Min PARK
Life of this patent
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Abstract
Provided is a smartkey system for reducing battery consumption. The smartkey system in a sleep mode wakes up at every certain interval, and first checks whether there is a fob near a vehicle. Only when there is the fob near the vehicle, the smartkey system receives authentication information from the fob to authenticate the fob. Therefore, an authentication operation is not performed when there is no fob near the vehicle, and thus, a wakeup time is shortened, thereby reducing an amount of dark current consumed by the vehicle. Moreover, the wakeup time of the smartkey system is shortened, thus securing a time margin that enables an additional operation to be performed in the sleep mode.
Claims17
A smartkey system for reducing battery consumption, the smartkey system comprising:
- a communication unit configured to include at least one antenna for the smartkey system of a vehicle;
- a check unit configured to transmit a fob presence check signal to near the vehicle through the communication unit, and determine presence of the fob near the vehicle according to whether a presence signal, which is a response to the fob presence check signal, is received through the communication unit;
- an authentication unit configured to, when it is determined that the fob is near the vehicle, transmit an authentication information request signal through the communication unit, and when an authentication signal that is a response to the authentication information request signal is received, determine whether unique identifier information included in the received authentication signal matches predetermined unique identifier information of the vehicle;
- and
- a control unit configured to, when it is determined by the authentication unit that there is a match between the unique identifier information, release a sleep mode of the smartkey system.
A battery consumption reducing method of a smartkey system, the battery consumption reducing method comprising:
- determining whether a presence signal, which is a response to a fob presence check signal transmitted to near a vehicle, is received through an antenna for the smartkey system of the vehicle;
- when it is determined that the presence signal is received, transmitting an authentication information request signal to the fob that has transmitted the presence signal;
- when an authentication signal that is a response to the authentication information request signal is received, determining whether unique identifier information included in the authentication signal matches predetermined unique identifier information of the vehicle;
- and
- when it is determined that there is a match between the unique identifier information, releasing a sleep mode of the smartkey system.
Dependencies are inferred from the claim text.