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System configuration |
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The newly developed smart card key system
consists of the steering lock module, LF antenna, UHF
receiver, and the smart card key that the user carries,
etc. By integrating the smart ECU and the mechanical parts
such as the main switch knob, steering lock, etc. into
the steering lock module, the simple system construction
suitable for a motorcycle has been realized. The system
is also linked with the seat actuator, console box, fuel
injection ECU, meter, and the turn signals.
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 Smart
card key system layout
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| Smart
card key system configuration |
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Electronic referencing in the smart card key system |
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| When the rider presses either one of the
main switch knob, the seat switch or the console box switch,
the smart ECU starts functioning. It sends ID signals
in LF (low frequency) waves from the vehicle to the smart
card key via the LF antenna. As the smart card key receives
and identifies the LF signals, it sends the ID to the
vehicle in UHF waves. The UHF receiver in the vehicle
receives and identifies the UHF signals, allowing the
item corresponding to the pressed switch to be unlocked.
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Range of unlocking and locking |
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The unlocking range is an 80cm radius from
the main switch knob and limited to 180 degrees to the
rear (height within 70~130cm). The locking range of the
main switch knob is set at more than a 250cm radius from
the center of the vehicle. Considering ease of unlocking
and locking a motorcycle, the communicable areas have
been designated to satisfy both operations.
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Basic description of the system |
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Main switch/seat switch/box switch |
It is possible to unlock the main switch
knob, open the seat, or open the console box just by pressing
the switch while having the smart card key on their person.
When the main switch knob is turned to ON, the fuel injection
ECU exercises cross-referencing based on the ID from the
smart card key system.
The smart card key system has made vehicles become
more user -friendlier than ever. The system completely
eliminates key operation when starting or adding/removing
an object to/from a compartment. Taking into account
rider operations, while wearing winter gloves, further
considerations have been given to the application of
a smart card key system into a motorcycle such as, the
main switch knob shape, the incorporated torque limiter
in the main switch knob, the communication ON/OFF switch
attached to the smart card key, etc.
When locking the main switch knob, the locking can
be confirmed by answer back. When unlocked, the SMART
indicator lamp in the speedometer and the blue illumination
around the main switch knob glow, allowing confirmation
of the status as well as enhancing cosmetic appearance.
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