Vehicle equipment control with semiconductor light sensors

B - Operations – Transporting – 60 – Q

Patent

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Details

B60Q 1/14 (2006.01) B60R 1/04 (2006.01) B60R 1/08 (2006.01) G01J 1/46 (2006.01) G02B 5/08 (2006.01)

Patent

CA 2356992

Equipment on automotive vehicle (20) is controlled by a system including at least one semiconductor light sensor (170) having variable sensitivity to light. Each light sensor generates a light signal (164) indicative of the intensity of light incident on the light sensor. Control logic (66) varies the sensitivity of the light sensor and generates equipment control signals (166) based on received light signals. Sensitivity of light sensors (170) may be varied by changing the integration time (228) for producing charge from light (176) incident on light transducers (178), by selecting between light transducers (178, 490, 500, 504) of different sensitivity within the light sensor (170), by using a light transducer (530) with a sensitivity that is a function of the amount of incident light (176), and the like. Controlled equipment includes devices such as automatically dimming rearview mirrors (24, 26), headlamps (44), and moisture removal means (38, 40, 42).

Selon cette invention, l'équipement d'un véhicule automobile (20) est commandé par un système qui comprend un capteur de lumière à semi-conducteurs (170, 170') possédant une sensibilité variable à la lumière. Chaque capteur de lumière émet un signal lumineux (164) indiquant l'intensité de la lumière qui atteint le capteur. Une logique de commande (66) régule la sensibilité du capteur de lumière et génère des signaux de commande (166) de l'équipement sur la base des signaux lumineux reçus. On peut réguler la sensibilité des capteurs de lumière (170, 170') en modifiant le temps d'intégration (228) pour produire une charge à partir de la lumière (176) incidente aux transducteurs de lumière (178), et ce par la sélection entre les transducteurs de lumière (178, 490, 500, 504) à sensibilité différente à l'intérieur du capteur lumineux (170), au moyen d'un transducteur de lumière dont la sensibilité est fonction de la quantité de lumière incidente (176), ou similaire. L'équipement commandé comprend des dispositifs tels que les rétroviseurs à atténuation automatique (24, 26), les phares (44) et les systèmes d'évacuation de l'humidité (38, 20, 42).

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