Emergency call service system for vehicle and method therefor

1. An emergency call service system for a vehicle, the emergency call service system comprising:

a vehicle terminal configured to collect vehicle data during driving of the vehicle; and

a server configured to:

determine whether an accident occurs in the vehicle based on the vehicle data; and

request rescue from an emergency call center when it is determined that the accident occurs in the vehicle,

wherein the vehicle terminal is configured to:

collect at least one of location data, speed data, angular acceleration data, or an airbag deployment signal of the vehicle, and

transmit the angular acceleration data having a highest value, the speed data and the air deployment signal of the vehicle to the server within a current sampling period.

2. The emergency call service system of claim 1 , wherein the vehicle terminal is configured to:

store first received speed data in a buffer;

sequentially update the speed data; and

transmit the stored speed data to the server when the current sampling period ends.

3. The emergency call service system of claim 1 , wherein the vehicle terminal is configured to:

store first received angular acceleration data in a buffer;

sequentially compare the angular acceleration data to store angular acceleration data having a higher value in the buffer; and

transmit the stored angular acceleration data to the server when the current sampling period ends.

4. The emergency call service system of claim 1 , wherein the vehicle terminal is configured to:

transmit the vehicle data at a first reference period when a vehicle speed is included in a first interval;

transmit the vehicle data at a second reference period that is greater than the first reference period when the vehicle speed is included in a second interval that is shorter than the first interval; and

transmit the vehicle data at a third reference period that is greater than the first reference period and the second reference period when the vehicle speed is included in a third interval that is shorter than the first interval and the second interval.

5. The emergency call service system of claim 4 , wherein the vehicle terminal is configured to:

maintain the first reference period during a first reference time when the vehicle speed changes from the first interval to the second interval; and

maintain the second reference period during a second reference time that is shorter than the first reference time when the vehicle speed changes from the second interval to the third interval.

6. The emergency call service system of claim 1 , wherein the vehicle terminal is configured to:

notify the server that the vehicle is parking when the vehicle is parking.

7. The emergency call service system of claim 1 , wherein the server is configured to:

determine that the accident occurs in the vehicle when the vehicle data is not received within a transmission time corresponding to a vehicle speed while the vehicle is traveling.

8. The emergency call service system of claim 1 , wherein the server is configured to:

attempt to communicate with the vehicle terminal when the vehicle data is not received within a transmission time corresponding to a vehicle speed while the vehicle is traveling; and

determine that the accident occurs in the vehicle when the vehicle terminal is not connected or when no response is received from the vehicle terminal.

9. The emergency call service system of claim 1 , wherein the server is configured to:

determine that the accident occurs in the vehicle when a rate of change in the vehicle speed is greater than a first threshold and when an angular acceleration is greater than a second threshold.

10. The emergency call service system of claim 1 , wherein the server is configured to:

attempt to communicate with the vehicle terminal when a rate of change in the vehicle speed is greater than a first threshold and when an angular acceleration is greater than a second threshold; and

determine that the accident occurs in the vehicle when the vehicle terminal is not connected or when no response is received from the vehicle terminal.

11. An emergency call service method for a vehicle, the emergency call service method comprising:

collecting, by a vehicle terminal, vehicle data during driving of the vehicle;

transmitting, by the vehicle terminal, the collected vehicle data to a server;

determining, by the server, whether an accident occurs in the vehicle based on the vehicle data; and

when it is determined that the accident occurs in the vehicle, requesting, by the server, rescue from an emergency call center,

wherein transmitting the vehicle data includes transmitting, to the server, angular acceleration data having a highest value and vehicle speed data within a current sampling period.

12. The emergency call service method of claim 11 , wherein transmitting the vehicle data includes:

storing first received vehicle speed data in a buffer;

sequentially updating the vehicle speed data; and

transmitting, to the server, the stored vehicle speed data when the current sampling period ends.

13. The emergency call service method of claim 11 , wherein transmitting the vehicle data includes:

storing first received angular acceleration data in a buffer;

sequentially comparing the angular acceleration data and storing angular acceleration data having a higher value in the buffer; and

transmitting, to the server, the stored angular acceleration data when the current sampling period ends.

14. The emergency call service method of claim 11 , wherein transmitting the vehicle data includes:

transmitting the vehicle data at a first reference period when a vehicle speed is included in a first interval;

transmitting the vehicle data at a second reference period that is longer than the first reference period when the vehicle speed is included in a second interval that is shorter than the first interval; and

transmitting the vehicle data at a third reference period that is shorter than the first reference period and the second reference period when the vehicle speed is included in a third interval that is shorter than the first interval and the second interval.

15. The emergency call service method of claim 14 , wherein transmitting the vehicle data to the server further includes:

maintaining the first reference period during a first reference time when the vehicle speed changes from the first interval to the second interval; and

maintaining the second reference period during a second reference time that is shorter than the first reference time when the vehicle speed changes from the second interval to the third interval.

16. The emergency call service method of claim 11 , wherein determining whether the accident occurs in the vehicle includes:

attempting to communicate with the vehicle terminal when the vehicle data is not received within a transmission time corresponding to a vehicle speed while the vehicle is traveling; and

determining that the accident occurs in the vehicle when the vehicle terminal is not connected or when no response is received from the vehicle terminal.

17. The emergency call service method of claim 11 , wherein determining whether the accident occurs in the vehicle includes:

attempting to communicate with the vehicle terminal when a rate of change in a vehicle speed is greater than a first threshold and when an angular acceleration is greater than a second threshold; and

determining that the accident occurs in the vehicle when the vehicle terminal is not connected or when no response is received from the vehicle terminal.