| 摘要 |
<p>A circuit for recording journey information is esp. for use in vehicles with brake slip control systems. It is a simple, compact, low-maintenance circuit also providing clear information concerning vehicle motion prior to an accident. Speed information is placed in a non-volatile memory (3) via an input circuit (2) with the facility to produce successive speed signals when one or more accident criteria are satisfied. A blocking signal is generated by a flip-flop (10). The flip-flop set input (17) comes from a comparator (6) comparing the wheel speed signal and a signal dependent on the vehicle deceleration. The flip-flop preset input (13) comes from a comparator (7) comparing a reference signal and a signal corresp. to the differential quotients of deceleration.</p> |
