Electrical transmission or interconnection systems – Vehicle mounted systems – Automobile
Patent
1991-07-30
1993-02-02
Pellinen, A. D.
Electrical transmission or interconnection systems
Vehicle mounted systems
Automobile
315 82, 362 71, B60L 114, B60Q 1115
Patent
active
051840243
ABSTRACT:
In an apparatus to regulate the illumination range of a motor vehicle having: a front axle sensor sender (V) on a front wheel axle and a rear axle sensor sender (H) on a rear wheel axle whose output signals depend upon the relative position of a motor vehicle body to the wheel axles; a nominal-value former (S) which forms a difference between the signals from the front axle sender and the rear axle sender; a first filter (F1), including an average-value former, which, in dependence upon a first filter time constant of the first filter, forms filtered, nominal-value, signals from the unfiltered nominal-value signals of the nominal-value former; and a regulator (R) which regulates adjusting elements for adjustment of positions of headlights, in order to provide an apparatus which, in an uncomplicated and cost-effective manner without the use or analysis of road, or travel signals, upon braking of the motor vehicle improves a dynamic of illumination range regulation, the nominal-value former is coupled with the first filter and with a second filter (F2), with the second filter having a second filter time constant which is shorter than the first filter time constant of the first filter, with the regulator being selectively coupled to the first filter or the second filter via a switch-over device (SE), and the switch-over device being controllable by signals from a brake pedal switch (B).
REFERENCES:
patent: 3840730 (1974-10-01), Andres et al.
patent: 4486688 (1984-12-01), Schmitz
patent: 4620267 (1986-10-01), Cibie
patent: 4963794 (1990-10-01), Shibata et al.
G. Couffinhal et al.; "Lighting Control Devices"; Electronics; London, England; Oct. 29-Nov. 2, 1979; pp. 200-204.
Hufnagel Joachim
Hussmann Micha
Fleming Fritz M.
Hella KG & Hueck Co.
Pellinen A. D.
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