| 摘要 |
<p>PURPOSE: To prevent the occurrence of accidents, by displaying even an reduction in speed made by any operation other than normal footing operations similarly as an reduction in speed made by the normal footing operations, and accurately display an reduction in speed even when an vehicle is running over an inclined road, or the vehicle itself is inclined, or even when the vehicle is oscillated such as swinging and the like. CONSTITUTION: The output pulse of a wheel speed corresponding pulse output circuit 1 within an unit time is alternately counted by two count circuits 3 and 4, the difference between the resultant values of these counts is determined by subtraction 5 and 6, the resultant value after the subtraction is compared 8 and 9 with a display reference value set in advance by a display reference value setting circuit 7, and when comparison is shown as the resultant value after the reduction > (or >=) the display reference value, a display signal is outputted, and a display lamp 12 is thereby lighted.</p> |
