Wiper control system for a vehicle and a method thereof
First Claim
1. A wiper control system comprising:
- a rain droplet detector with a plurality of switches that are configured to be electrically connected by rain droplets, each switch outputting one of two different signals according to an electrical connection thereof;
a multiplexer receiving signals from each of the plurality of the switches, the multiplexer being configured to repeatedly perform a process of selecting one of the received signals and outputting the selected signal;
a count register connected to the multiplexer to receive the signal output from the multiplexer, the count register counting a number of the signals corresponding to the electrical connection of the switches of the rain droplet detector and outputting a counted value; and
a wiper control unit connected to the count register to receive the counted value, the wiper control unit controlling a speed of a wiper based on the counted value.
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Accused Products
Abstract
A wiper control system is provided which comprises a rain droplet detector, a multiplexer, a count register, and a wiper control unit. The rain droplet detector has a plurality of switches that are configured to be electrically connected by rain droplets, and each switch outputs one of two different signals according to an electrical connection thereof. The multiplexer receives signals from each of the plurality of the switches, and it is configured to repeatedly perform a process of selecting one of the received signals and outputting the selected signal. The count register is connected to the multiplexer to receive the signal output from the multiplexer, and it counts a number of the signals corresponding to the electrical connection of the switches of the rain droplet detector and outputs a counted value. The wiper control unit controls a speed of a wiper based on the counted value.
66 Citations
18 Claims
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1. A wiper control system comprising:
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a rain droplet detector with a plurality of switches that are configured to be electrically connected by rain droplets, each switch outputting one of two different signals according to an electrical connection thereof;
a multiplexer receiving signals from each of the plurality of the switches, the multiplexer being configured to repeatedly perform a process of selecting one of the received signals and outputting the selected signal;
a count register connected to the multiplexer to receive the signal output from the multiplexer, the count register counting a number of the signals corresponding to the electrical connection of the switches of the rain droplet detector and outputting a counted value; and
a wiper control unit connected to the count register to receive the counted value, the wiper control unit controlling a speed of a wiper based on the counted value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wiper control method comprising:
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determining an initial wiper speed level among nine predetermined wiper speed levels that include nine sequential levels from a wiper speed level 1 to a wiper speed level 9, each of the predetermined wiper speed levels corresponding to a different wiper speed;
detecting an amount of rain droplets and determining a corresponding rain droplet amount level among seventeen predetermined rain droplet amount levels that include seventeen sequential levels from a rain droplet amount level 0 to a rain droplet amount level 16, each of the predetermined rain droplet amount levels corresponding to a different rain droplet amount; and
controlling a wiper speed based on the rain droplet amount level and the initial wiper speed level. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification