| 摘要 |
PURPOSE: An apparatus for detecting errors of wheel velocity of a vehicle is provided to select one wheel velocity sensor among a plurality of wheel velocity sensors, to count a square wave signal offered from the selected wheel velocity sensor, and to detect wheel velocity errors. CONSTITUTION: The apparatus for detecting errors of wheel velocity of a vehicle is composed of a micro control unit(210) and a semiconductor circuit(220). The micro control unit is composed of a first wheel selecting unit(211); a first binary counter(212), and an operation unit(213). The first wheel selecting unit selects one wheel velocity sensor among a front left wheel velocity sensor(111); a front right wheel velocity sensor(112); a rear left wheel velocity sensor(113); and a rear right wheel velocity sensor(114). The first binary counter counts the outputted square wave signal and recognizes the wheel velocity. The operation unit carries out an operation for the vehicle stability and control on the basis of the detected wheel velocity. The semiconductor circuit on demand is composed of a second wheel selecting unit(222); a second binary counter(223); and a comparison unit(224). The second wheel selecting unit selects a wheel velocity sensor selected by the first wheel selecting unit. The comparison unit compares wheel velocities detected by the first and second binaries. If an error is greater than a critical value, the comparison unit outputs a system error signal to the operation unit. |
