Vehicle and method of controlling the same

Patent metadata

Field	Value
Publication number	US-10837549-B2
Application number	US-201916687413-A
Country	US
Kind code	B2
Filing date	Nov 18, 2019
Priority date	Apr 1, 2019
Publication date	Nov 17, 2020
Grant date	Nov 17, 2020

Abstract

A vehicle may include a transmission control unit (TCU) to output a control signal to the transmission; a shift lever; a shift lever electronic control unit (ECU) to transmit a first signal and a second signal, to the TCU; a main communication unit to perform communication between the TCU and the shift lever ECU; a backup communication unit to perform communication between the TCU and the shift lever ECU; and a controller configured to: control the shift lever ECU to transmit first and second signals based on one of a plurality of matching codes having different pulse width modulation (PWM) duty ratios assigned to the respective gear positions of the transmission; determine another one of the plurality of matching codes when the operation commands indicated by each of the first signal and the second signal received by the TCU are different; and control the shift lever ECU based on the determined matching code.

First claim

What is claimed is:

1. A vehicle comprising:
a transmission;
a transmission control unit (TCU) configured to output a control signal to the transmission;
a shift lever configured to receive an input for changing a gear position in the transmission;
a shift lever electronic control unit (ECU) configured to transmit a first signal and a second signal to the TCU based on the input, wherein the first and second signals indicate operation commands for changing the gear position;
a main communication unit configured to perform a first communication between the TCU and the shift lever ECU, the first communication including transmitting and receiving of the first signal;
a backup communication unit configured to perform a second communication between the TCU and the shift lever ECU, the second communication including transmitting and receiving of the second signal; and
a controller configured to:
control the shift lever ECU to transmit the first signal and the second signal based on one of a plurality of matching codes having different pulse width modulation (PWM) duty ratios assigned to respective gear positions of the transmission;
determine another of the plurality of matching codes when the operation commands indicated by each of the first signal and the second signal received by the TCU are different; and
control the shift lever ECU to transmit the first signal and the second signal based on the determined matching code.

2. The vehicle according to claim 1 , wherein the controller is further configured to:
control the TCU and the shift lever ECU to transmit a start signal having a predetermined PWM duty ratio;
control the TCU to transmit a matching request signal corresponding to the determined matching code to the shift lever ECU; and
control the shift lever ECU to transmit a matching determination signal corresponding to the determined matching code to the TCU.

3. The vehicle according to claim 2 , wherein the matching determination signal has a same PWM duty ratio as the matching request signal or has a PWM duty ratio which is different from the matching request signal by a predetermined ratio.

4. The vehicle according to claim 1 , wherein the vehicle further includes a user interface configured to receive an input from a user and configured to output at least one of an image and a sound.

5. The vehicle according to claim 4 , wherein the controller is further configured to:
determine another matching code among the plurality of matching codes when an event for changing the matching code occurs; and
control the shift lever ECU to transmit the first signal and the second signal based on the determined matching code.

6. The vehicle according to claim 5 , wherein the event for changing the matching code includes at least one of an event for restarting the vehicle after the vehicle is turned off and the controller controls the shift lever ECU to transmit the first signal and the second signal based on the one of the plurality of matching codes or an event for which a predetermined time has elapsed after the controller controls the shift lever ECU to transmit the first signal and the second signal based on the one of the plurality of matching codes.

7. The vehicle according to claim 5 , wherein the event for changing the matching code includes an event for receiving an input for the matching code change from a driver through the user interface.

8. The vehicle according to claim 4 , wherein the controller is further configured to control the user interface to output a message indicating that hacking of the first signal has occurred to at least one of the image and the sound, when the operation commands indicated by each of the first signal and the second signal received by the TCU are different.

9. The vehicle according to claim 1 ,
wherein the vehicle further includes a communication unit configured to perform communication with a wide area network, and
wherein the controller is further configured to control the communication unit to transmit a message indicating hacking has occurred to the first signal to at least one of an external server or a terminal of a driver, when the operation commands indicated by each of the first signal and the second signal received by the TCU are different.

10. The vehicle according to claim 1 , wherein the controller is further configured to control the transmission to engage the gear position with parking (P), or control the vehicle to turn off an engine, when the operation commands indicated by each of the first signal and the second signal received by the TCU are different.

11. A method of controlling a vehicle that includes a transmission, a transmission control unit (TCU) configured to output a control signal to the transmission, a shift lever configured to receive an input for changing a gear position, a shift lever electronic control unit (ECU), a main communication unit configured to perform communication between the TCU and the shift lever ECU, and a backup communication unit configured to perform communication between the TCU and the shift lever ECU, the method including:
controlling the shift lever ECU to transmit a first signal and a second signal indicating operation commands for changing the gear position to the TCU through the main communication unit and the backup communication unit based on one of a plurality of matching codes having different pulse width modulation (PWM) duty ratios assigned to respective gear positions of the transmission;
determining another of the plurality of matching codes when the operation commands indicated by each of the first signal and the second signal received by the TCU are different; and
controlling the shift lever ECU to transmit the first signal and the second signal based on the determined matching code.

12. The method according to claim 11 , further including:
controlling the TCU and the shift lever ECU to transmit a start signal having a predetermined PWM duty ratio;
controlling the TCU to transmit a matching request signal corresponding to the determined matching code to the shift lever ECU; and
controlling the shift lever ECU to transmit a matching determination signal corresponding to the determined matching code to the TCU.

13. The method according to claim 12 , wherein the matching determination signal has a same PWM duty ratio as the matching request signal or has a PWM duty ratio which is different from the matching request signal by a predetermined ratio.

14. The method according to claim 11 , wherein the vehicle further includes a user interface configured to receive an input from a user and configured to output at least one of an image and a sound.

15. The method according to claim 14 , further including:
determining another matching code among the plurality of matching codes when an event for changing the matching code occurs; and
controlling the shift lever ECU to transmit the first signal and the second signal based on the determined matching code.

16. The method according to claim 15 ,
wherein the event for changing the matching code includes at least one of an event for restarting the vehicle after the vehicle is turned off and the controller controls the shift lever ECU to transmit the first signal and the second signal based on the one of the plurality of matching codes or an event for which a predetermined time has elapsed after the controller controls the shift lever ECU to transmit the first signal and the second signal based on the one of the plurality of matching codes.

17. The method according to claim 15 , wherein the event for changing the ma

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Park Hangil

Classifications

• H04W4/48

  for in-vehicle communication · CPC title

• B60R16/0232 Primary

  for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions · CPC title

• F16H2061/1216

  Display or indication of detected failures · CPC title

• F16H61/12 Primary

  Detecting malfunction or potential malfunction, e.g. fail safe (in control of hydrostatic gearing F16H61/4192) {; Circumventing or fixing failures} · CPC title

• F16H59/10

  comprising levers · CPC title