| 摘要 |
PURPOSE:To allow easy detection of wear on tires in such a way that the number of revolution is detected on front and rear wheels to a vehicle, and an alarm lamp is formed so that it may be lit up seeking for the difference on the number of revolution. CONSTITUTION:The number of revolution is respectively detected on front wheels with a revolution detector 1, and on rear wheels with a revolution detector 2, and respective pulse signals are applied as input on counters 3, 4. When frictional ratio is identical to both the front and rear wheels, the number of revolution for the both wheels becomes in accord with all together, output from the both detectors 1, 2 becomes in trim to be identical wave-forms with identical cycles, and there are no input signals from a rear wheel counter 4 to a front wheel counter 3. On another hand, when the difference of wear ratio is produced on the both wheels, the difference of output is produced between the both detectors 1, 2, and output signals are applied as input from the rear wheel counter to the front wheel counter 3. Thus, upon count operation of the counter 3, an alarm lamp 6 is lit up through an amplifier 5. In result, tire wear can be readily detected in an early stage. |
