| 摘要 |
PROBLEM TO BE SOLVED: To determine whether respective wheel side units disposed on four wheels, are disposed on front wheels or rear wheels.SOLUTION: A vehicle 11 comprises four wheels 12 to 15. The respective wheels 12 to 15 comprise a wheel side unit 20. Each wheel side unit 20 comprises a controller and an acceleration sensor 23. The controller can determine that, the wheels 12 to 15 having the acceleration sensors 23 are provided on steering wheels, when a phase difference between a peak value of an X-axis detection value and a peak value of a Y-axis detection value of each acceleration sensor 23 exceeds a preset steering wheel determination threshold. Because whether the steering wheel is a front wheel or rear wheel is stored in a storage part of each wheel side unit 20, so that, it is possible to determine that whether each wheel side unit 20 is provided on a front wheel or a rear wheel, on the basis of the fact that, whether each wheel side unit 20 is provided on each steering wheel or not.SELECTED DRAWING: Figure 7 |
