Vehicle warning method, telematics control unit and device based on vehicle-to-everything (V2X) communications

1. A vehicle warning method based on Vehicle-to-everything (V2X) communication, used in a telematics control unit (TCU) installed in a first vehicle, comprising:

receiving a heartbeat frequency of a user driving the first vehicle;

determining whether the heartbeat frequency is within a normal range;

adding a first loss-of-control flag into a first basic safety message (BSM) when the heartbeat frequency is not within the normal range; and

broadcasting the first BSM.

2. The vehicle warning method based on Vehicle-to-everything communication as claimed in claim 1 , wherein the first loss-of-control flag is located in a first safety extension frame in the first BSM.

3. The vehicle warning method based on Vehicle-to-everything communication as claimed in claim 1 , further comprising:

receiving a second BSM;

determining whether the second BSM comprises a second loss-of-control flag; and

transmitting a warning message to notify the user when the second BSM comprises the second loss-of-control flag.

4. The vehicle warning method based on Vehicle-to-everything communication as claimed in claim 3 , wherein before transmitting the warning message to notify the user, the method further comprises:

obtaining second vehicle information in the second BSM;

predicting a track of the second vehicle based on the second vehicle information;

determining whether the first vehicle is located in a critical area according to the track; and

transmitting the warning message to notify the user when the first vehicle is located in the critical area.

5. The vehicle warning method based on Vehicle-to-everything communication as claimed in claim 4 , wherein the second vehicle information at least comprises a position, a speed, a braking state, and a size of the second vehicle.

6. The vehicle warning method based on Vehicle-to-everything communication as claimed in claim 3 , wherein the second loss-of-control flag is located in a second safety extension frame in the second BSM.

7. A telematics control unit (TCU) based on Vehicle-to-everything (V2X) communication, installed in a vehicle, comprising:

one or more processors; and

one or more non-transitory computer-readable storage media for storing one or more computer-readable instructions, wherein the processor is configured to drive the non-transitory computer-readable storage media to execute the following tasks:

receiving a heartbeat frequency of a user driving the vehicle;

determining whether the heartbeat frequency is within a normal range;

adding a loss-of-control flag into a basic safety message (BSM) when the heartbeat frequency is not within the normal range; and

broadcasting the BSM.

8. The telematics control unit based on Vehicle-to-everything (V2X) communication as claimed in claim 7 , wherein the loss-of-control flag is located in a safety extension frame in the BSM.

9. A vehicle warning device based on Vehicle-to-everything (V2X) communication, comprising:

one or more processors; and

one or more non-transitory computer-readable storage media for storing one or more computer-readable instructions, wherein the processor is configured to drive the non-transitory computer-readable storage media to execute the following tasks:

receiving a basic safety message (BSM);

determining whether the BSM comprises a loss-of-control flag; and

transmitting a warning message to notify a user when the BSM comprises the loss-of-control flag.

10. The vehicle warning device based on Vehicle-to-everything communication as claimed in claim 9 , wherein before transmitting the warning message to notify the user, the processor further executes the following tasks:

obtaining first vehicle information in the BSM;

predicting a track of the first vehicle according to the first vehicle information;

determining whether the first vehicle is located in a critical area according to the track; and

transmitting the warning message to notify the user when the device is located in the critical area.

11. The vehicle warning device based on Vehicle-to-everything communication as claimed in claim 10 , wherein the first vehicle information at least comprises a position, a speed, a braking state, and a size of the first vehicle.

12. The vehicle warning device based on Vehicle-to-everything communication as claimed in claim 9 , wherein the loss-of-control flag is located in a safety extension frame in the BSM.

13. The vehicle warning device based on Vehicle-to-everything communication as claimed in claim 9 , wherein the vehicle warning device is a mobile device.

14. The vehicle warning device based on Vehicle-to-everything communication as claimed in claim 9 , wherein the vehicle warning device is a telematics control unit (TCU) installed in a second vehicle.