| 摘要 |
A control circuit for an electrically opeated vehicle window or sun roof includes a manually actuated switch 3,4 associated with each window or sunroof, relays 5 for setting the direction of rotation of the associated electric motors 2, a resistor 6 connected between the relays 5 and ground potential; and CPU 7. The CPU actuates the relays 5 and motors 2 in accordance with the switched command, and monitors the current through the resistor 6. From this it calculates and continuously updates a memory with data representing the current flow through the resistor 6 when the windows/sunroof are moving without meeting an obstruction and derives a peak valve for the current from this stored value 16 the current drawn exceeds the calculated peak value, the electric motor is stopped or reversed. The horn may also be sounded. A main sensor may cause closure of the windows/sunroof. <IMAGE> |
