Device for processing wheel speed sensor signal according to ECU switching

A method for controlling a wheel speed sensor (WSS) signal-processing device according to an electronic control unit (ECU) switching, the method comprising the steps of:

• identifying, by a first ECU, first information on wheel speed based on a detection signal received from the WSS;
• transmitting the first information to a second ECU;
• performing, by the first ECU, a control operation based on the first information while in section A;
• identifying an event in which an operating state of the first ECU is switched from an active state to an inactive state;
• performing, by the second ECU, a control operation based on the first information while in section B;
• and
• performing, by the second ECU, a control operation based on second information while in section C, the second information being on wheel speed which is identified based on a detection signal directly received from the WSS;
• wherein section A is a state in which the first ECU is active and the second ECU is inactive,
• wherein the transition from section A to section B occurs when the first ECU is switched from an active state to an inactive state,
• wherein section B includes a first section and a second section:
• the first section corresponds to the time required to switch the operating state of the second ECU from the inactive state to the active state, and
• the second section corresponds to the time required for the second ECU to be ready to identify the control information based on the detection signal received directly from the WSS,
• wherein section C is a state in which the second ECU is ready to identify the control information based on the detection signal received directly from the WSS.