| 摘要 |
<p>PURPOSE: To prevent an accident such as collision from being generated by displaying deceleration like the deceleration by a foot brake even in the deceleration except by the operation by the foot brake, to accurately display the deceleration even if there is the slope on the road surface or the inclination of a vehicle, or even if vibration such as oscillation is generated on the vehicle, and to achieve the high speed of the deceleration detecting operation. CONSTITUTION: The time of one cycle of a pulse signal to be output from a wheel corresponding pulse output circuit 1, and corresponding to the rotational speed of wheels is alternately measured by two pulse length measuring circuits 4, 5, the measured results are compared by a comparing circuit 6. When the after input pulse length measured value is larger than the before input pulse length measured value, a display signal is output, and a display lamp 8 is turned on.</p> |
