Electronic control apparatus and method of controlling the same

1. An electronic control apparatus comprising:

a first electronic control apparatus including a first signal processor configured to process a signal of a wheel speed sensor; and

a second electronic control apparatus including:

a second signal processor configured to process the signal of the wheel speed sensor,

a first switching device electrically provided between the wheel speed sensor and the first signal processor, configured to allow or block the signal of the wheel speed sensor to be transmitted to the first signal processor, and

a second switching device electrically provided between the wheel speed sensor and the second signal processor, configured to allow or block the signal of the wheel speed sensor to be transmitted to the second signal processor.

2. The electronic control apparatus according to claim 1 , wherein the first electronic control apparatus further comprises a first controller configured to transmit a switching operation command of the first switching device to the second electronic control apparatus based on whether the first signal processor is in a failure state.

3. The electronic control apparatus according to claim 2 , wherein, when the first signal processor is not in the failure state, the first controller is configured to transmit a turn-on switching operation command to the first switching device, and to control the first signal processor so that the first signal processor processes the signal of the wheel speed sensor.

4. The electronic control apparatus according to claim 2 , wherein, when the first signal processor is in the failure state, the first controller is configured to transmit a turn-off switching operation command to the first switching device.

5. The electronic control apparatus according to claim 1 , wherein the first electronic control apparatus further comprises a first controller configured to transmit a failure signal to the second electronic control apparatus based on whether the first signal processor is in a failure state, and

wherein the second electronic control apparatus further comprises a second controller configured to control operations of the first switching device and the second switching device in response to the failure signal.

6. The electronic control apparatus according to claim 5 , wherein, when the failure signal is not received, the second controller is configured to transmit a turn-on switching operation command to the first switching device, and to transmit a turn-off switching operation command to the second switching device.

7. The electronic control apparatus according to claim 5 , wherein, when the failure signal is received, the second controller is configured to transmit a turn-off switching operation command to the first switching device, and to transmit a turn-on switching operation command to the second switching device.

8. The electronic control apparatus according to claim 7 , wherein, when the failure signal is received, the second controller is configured to control the second signal processor to process the signal of the wheel speed sensor.

9. The electronic control apparatus according to claim 8 , wherein the second controller is configured to transmit wheel speed information processed by the second signal processor to the first controller, and

wherein the first controller is configured to calculate a wheel speed according to the wheel speed information received from the second electronic control apparatus.

10. The electronic control apparatus according to claim 1 , wherein the first electronic control apparatus further comprises a first controller configured to transmit a periodic normal operation signal to the second electronic control apparatus, and

wherein the second electronic control apparatus further comprises a second controller configured to control operations of the first switching device and the second switching device in response to receipt of the normal operation signal.

11. The electronic control apparatus according to claim 10 , wherein, when the periodic normal operation signal is not transmitted from the first controller, the second controller is configured to transmit a turn-off switching operation command to the first switching device, and to transmit a turn-on switching operation command to the second switching device.

12. The electronic control apparatus according to claim 11 , wherein the second controller is configured to control the second signal processor to process the signal of the wheel speed sensor, and to calculate a wheel speed according to wheel speed information processed by the second signal processor.

13. A method of controlling an electronic control apparatus that includes a first electronic control apparatus and a second electronic control apparatus, the method comprising:

determining whether the first electronic control apparatus is malfunctioning;

based on a failure of the first electronic control apparatus being not determined, allowing an output signal of a wheel speed sensor to be transmitted to the first electronic control apparatus, by a first switching device provided in the second electronic control apparatus and electrically provided between the wheel speed sensor and the first signal processor, and processing the output signal of the wheel speed sensor by the first electronic control apparatus; and

based on the failure of the first electronic control apparatus being determined, blocking the output signal of the wheel speed sensor to be transmitted to the first electronic control apparatus by the first switching device, and processing the output signal of the wheel speed sensor by the second electronic control apparatus.

14. An electronic control apparatus comprising:

a first electronic control apparatus including:

a first switch,

a first current sensor disposed in series between a wheel speed sensor and power by a short-circuit of the first switch, and

a second switch disposed in series between the wheel speed sensor and a ground; and

a second electronic control apparatus including:

a third switch disposed in series between the power and the wheel speed sensor, and

a second current sensor disposed in series between the wheel speed sensor and the ground by the short-circuit of a fourth switch.

15. The electronic control apparatus according to claim 14 , wherein the first electronic control apparatus further comprises a first controller configured to short the first switch and open the second switch when the first electronic control apparatus is in a normal operation, and

wherein the second electronic control apparatus further comprises a second controller configured to open the third switch and short the fourth switch when the second electronic control apparatus is in the normal operation.

16. The electronic control apparatus according to claim 15 , wherein the first controller is configured to open the first switch and the second switch when the first electronic control apparatus is in a failure, and to transmit open signal information of the first switch and the second switch to the second electronic control apparatus, and

the second controller is configured to short the third switch and the fourth switch based on the open signal information of the first switch and the second switch.

17. The electronic control apparatus according to claim 16 , wherein the second controller is configured to control the second current sensor so that the second current sensor detects a signal of the wheel speed sensor.

18. The electronic control apparatus according to claim 15 , wherein the second controller is configured to open the third switch and the fourth switch when the second electronic control apparatus is in a failure, and to transmit open signal information of the third switch and the fourth switch to the first electronic control apparatus, and

the first controller is configured to short the first switch and the second switch based on the open signal information of the third switch and the fourth switch.

19. The electronic control apparatus according to claim 18 , wherein the second controller is configured to control the second current sensor so that the second current sensor detects a signal of the wheel speed sensor.

20. The electronic control apparatus according to claim 14 , wherein the electronic control apparatus is configured to compare a detected signal of the wheel speed sensor detected by the first current sensor with a detected signal of the wheel speed sensor detected by the second current sensor, and to determine a failure of the wheel speed sensor based on a comparison result.