Vehicle light, windshield wiper control system
First Claim
1. An automatic system in a vehicle having switches for headlights, parking lights and a windshield wiper for controlling the turning ON of vehicle headlights and parking lights, having input switches, when any of the following switch combinations are turned ON:
- a) ignition, windshield wiper, light sensor;
b) ignition, and windshield wiper;
c) ignition and light sensor; and
keeping them ON as long as any of such switch combinations are ON, comprising manual ON/OFF switches for the ignition and windshield wiper and a condition responsive switch for the light sensor, a programmable digital logic circuit, an electronic circuit comprising a relay circuit and a relay switch, said relay switch having means for connecting said headlights to power supply means, said relay circuit being alternately connectable to actuating means for said relay switch which governs the connection of said headlights to said power supply means, said power supply means connected to said relay circuit, and control means for the relay circuit, said programmable digital logic circuit connecting the outputs of said ignition, windshield wiper and light sensor switches to the control means for said relay circuit.
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Accused Products
Abstract
A vehicle'"'"'s input switches relating to ignition, lights and moisture or rain provide responsive inputs that feed through a digital logic circuit to outputs of an electronic switching device for automatically activating the vehicle'"'"'s lights and wipers.
An alarm may be activated if certain input switches are turned on when the ignition is off.
The digital logic circuit may be discrete, a programmable read only memory (PROM) or a programmable logic array (PLA).
The electronic switching device may constitute a driver circuit and an integrated circuit which includes both a relay switching circuit and a switched circuit, for example a metal-oxide-semiconductor (MOS) driver and a power metal-oxide-semiconductor field-effect-transistor (MOSFET) integrated circuit.
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Citations
25 Claims
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1. An automatic system in a vehicle having switches for headlights, parking lights and a windshield wiper for controlling the turning ON of vehicle headlights and parking lights, having input switches, when any of the following switch combinations are turned ON:
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a) ignition, windshield wiper, light sensor; b) ignition, and windshield wiper; c) ignition and light sensor; and
keeping them ON as long as any of such switch combinations are ON, comprising manual ON/OFF switches for the ignition and windshield wiper and a condition responsive switch for the light sensor, a programmable digital logic circuit, an electronic circuit comprising a relay circuit and a relay switch, said relay switch having means for connecting said headlights to power supply means, said relay circuit being alternately connectable to actuating means for said relay switch which governs the connection of said headlights to said power supply means, said power supply means connected to said relay circuit, and control means for the relay circuit, said programmable digital logic circuit connecting the outputs of said ignition, windshield wiper and light sensor switches to the control means for said relay circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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- 11. An automatic switching means for controlling the activation of the parking lights and headlights of a vehicle having input switches for the ignition, parking lights, headlights, windshield wipers, moisture sensor and light sensor, comprising, input circuits with inputs responsive to signals from the ignition, parking lights, headlights, windshield wipers, moisture sensor and light sensor, a programmable digital logic circuit connecting the input signals to output circuits, each of said output circuits comprising an electronic switching means connected to the headlights and parking lights, in which the electronic switching means comprises an integrated driver circuit and a relay circuit, each relay circuit comprising an integrated circuit which includes both the relay switching circuit and a switched circuit, a switched circuit connecting to each of the headlights, parking lights and windshield wipers, wherein the headlights and parking lights are activated in accordance with a Truth Table, Table II.
- 19. An automatic system for controlling the activation of the headlight-parking light system and windshield wipers of a vehicle having input switches for the ignition, windshield wipers, moisture sensor and light sensor, comprising input circuits with inputs responsive to signals from the ignition, windshield wipers, moisture sensor and light sensor, a programmable digital logic circuit connecting the input signals to output circuits, each of the output circuits comprising electronic switching means connected to the headlight-parking light system and windshield wipers, in which the electronic switching means comprising an integrated driver circuit and a relay circuit, each relay circuit comprising an integrated circuit which includes both a relay switching circuit and a switched circuit, a switched circuit being connected to the headlight-parking light system and to the windshield wipers, wherein the headlight-parking light system and windshield wipers are activated in accordance with a Truth Table, Table III.
Specification