Vehicle control system

摘要

The control property of an onboard device is changeable by using an external control unit, and the data from the external control unit is authenticated. An onboard gateway unit is provided with a verification code generator for generating a security key, and an external control unit is provided with an application control unit for generating a security key. When the external control unit is connected, a main control logic unit of the gateway unit compares the two keys, and when the keys are verified, the control by the external control unit using an application program is enabled. The onboard device control unit can be easily connected to the external control unit. As the control of the device control unit by an external control signal is enabled only when verified, an unauthorized access can be prohibited, and the onboard deice can be controlled only by an authorized control signal.

主权项

1. A vehicle control system comprising a vehicle fitted with a device control unit for controlling an onboard device and an interface unit connected to the device control unit, and an external control unit that is configured to access the device control unit via the interface unit,
wherein the external control unit comprises an external verification code generating means for generating a code for accessing the device control unit, an external control signal generating means for generating an external control signal for controlling the onboard device and an external communication means for transmitting the external verification code and the external control signal to the interface unit; wherein the vehicle comprises an internal verification code generating means for generating an internal verification code for allowing access to the device control unit via the interface unit and an access permitting means for comparing the external verification code with the internal verification code and permitting control of the onboard device by the external control signal when there is a good match; wherein the device control unit is provided with a first control mode for having the onboard device be controlled by the external control signal generated by the external control signal generating means of the external control unit while the vehicle is traveling when the access permitting means has permitted the onboard device to be controlled by the external control signal, and a second control mode for having the onboard device be controlled according to a default control mode; wherein when the device control unit is operating in the first control mode, the device control unit determines whether the control mode is to be switched to the second control mode, and if it is determined that the control mode is to be switched, the device control unit transitions from the first control mode to the second control mode; and wherein the system further comprises a load condition determining means for determining a load condition of the external control unit, and an access limiting means for limiting a control of the onboard device by the external control signal when the load condition determining means has determined a large load for the external control unit.