Method for establishing a wireless vehicle network
A method for establishing a wireless network for a vehicle is provided herein. The vehicle comprises a tractor unit and a trailer. The tractor unit comprises at least one first station and a first control unit and the trailer comprises a second station and a second control unit. The method comprises supplying electrical energy to the second control unit. The method further comprises interconnecting the first control unit and the second control unit via a physical interface. The method further comprises generating a defined message by the second control unit and receiving the defined message by the first control unit via the physical interface. The method further comprises transmitting information required to establish the wireless network via the first station only when the defined message is present in the first station.
1. A method for establishing a wireless network for a vehicle, the vehicle comprising a tractor unit and a trailer, the tractor unit comprising at least one first station and a first control unit with the first control unit assigned to and in communication with the first station, and the trailer comprising a second station and a second control unit with the second control unit assigned to and in communication with the second station, the method comprising:
supplying electrical energy to the second control unit;
interconnecting the first control unit and the second control unit via a physical interface between the tractor unit and the trailer;
in response to the electrical energy being received at the second control unit, generating a defined message by the second control unit for transmission via the physical interface;
receiving the defined message by the first control unit via the physical interface;
transmitting a wireless signal containing information required to establish the wireless network via the first station only after the defined message is received by the first control unit and is present in the first station; and
establishing the wireless network between the first station and the second station for connection to an external device,
wherein the second control unit is a brake control unit, and wherein the first station transmits the information required to establish the wireless network only when a CAN message with the designation EBC1 is present in the first station and a first bit of the “Trailer ABS Status” contained in the message has the value “0”.
2. The method as claimed in claim 1 , wherein the defined message comprises a status of the second control unit.
3. The method as claimed in claim 1 , wherein the physical interface is formed by or comprises a CAN data bus or a PLC connection.
4. The method of claim 1 , wherein the defined message comprises a status of an anti-lock braking system.
5. The method of claim 1 , wherein the first station comprises the first control unit.
6. The method of claim 1 , wherein the second station comprises the second control unit.
7. The method claim 1 , wherein the first control unit is a brake control unit.
8. The method of claim 1 , wherein the physical interface comprises a data line between the tractor unit and the trailer.
9. The method of claim 1 , wherein the electrical energy is generated by the tractor unit and wherein the electrical energy is provided to the second control unit via an electrical supply line between the tractor unit and the trailer.
10. The method of claim 9 , wherein the physical interface comprises the electrical supply line.
11. The method of claim 1 further comprising the step of receiving the information required to establish the wireless network by the second station.