Wiper control system and method

Patent metadata

Field	Value
Publication number	US-10046740-B2
Application number	US-201615354991-A
Country	US
Kind code	B2
Filing date	Nov 17, 2016
Priority date	Apr 15, 2016
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

A wiper control system includes: a multifunction switch detecting and transmitting an operation of a wiper provided on a vehicle; a body control module controlling a wiper relay through a data signal of the multifunction switch; and a wiper motor connected to the multifunction switch and the body control module and connected to the wiper to rotate the wiper according to rotation of a cam plate of the multifunction switch and detect a parking end of the body control module, thereby preventing the wiper from being positioned in a middle of a windshield glass.

First claim

What is claimed is:

1. A wiper control system, comprising:
a multifunction switch detecting and transmitting an operation of a wiper provided on a vehicle;
a body control module controlling a wiper relay through a data signal of the multifunction switch; and
a wiper motor connected to the multifunction switch and the body control module and connected to the wiper to rotate the wiper according to rotation of a cam plate of the multifunction switch and detect a parking end of the body control module,
wherein the body control module determines whether the wiper is positioned in a middle of a windshield glass of the vehicle or the wiper is stopped in a position out of a bottom of the windshield glass.

2. The wiper control system according to claim 1 , wherein the wiper motor is connected to an ignition of the multifunction switch when the cam plate is rotated.

3. The wiper control system according to claim 1 , wherein a rotation angle of the cam plate is set to about 30 degrees.

4. A wiper control method, comprising the steps of:
checking, by a controller, that a wiper provided on a vehicle is stopped at a bottom of a windshield glass and a multifunction switch is off;
determining, by the controller, whether the multifunction switch is turned on;
turning a wiper relay on, by the controller, when the multifunction switch is turned on;
detecting, by a wiper motor, a stop position of the wiper before turning the wiper relay off;
determining, by the controller, whether the wiper is positioned in a middle of the windshield glass of the vehicle or the wiper is stopped in a position out of the bottom of the windshield glass; and
turning the wiper relay off, by the controller, when the wiper is positioned at the bottom of the windshield glass.

5. The wiper control method according to claim 4 , wherein determining whether the multifunction switch is turned on comprises spraying mist or washer fluid.

6. The wiper control method according to claim 5 , wherein the mist is sprayed for 0.7 seconds and the washer fluid is sprayed for 0.7 to 3.2 seconds, when the wiper relay is turned on.

7. The wiper control method according to claim 4 , wherein the step of determining the position of the wiper further comprises: adding 0.7 seconds to an on-time of the wiper relay when the position of the wiper is out of the bottom of the windshield glass.

8. The wiper control method according to claim 7 , further comprising: adding 0.7 seconds to the on-time of the wiper relay when the wiper is positioned in the middle of the windshield glass, and returning to detecting the position of the wiper.

9. The wiper control method according to claim 7 , further comprising: adding 0.7 seconds to the on-time of the wiper relay when the wiper is stopped in the position out of the bottom of the windshield glass, and returning to detecting the position of the wiper.

10. A non-transitory computer readable medium containing program instructions executed by a processor, the computer readable medium comprising:
program instructions that check that a wiper provided on a vehicle is stopped at a bottom of a windshield glass and a multifunction switch is off;
program instructions that determine whether the multifunction switch is turned on;
program instructions that turn a wiper relay on when the multifunction switch is turned on;
program instructions that detect a stop position of the wiper before turning the wiper relay off;
program instructions that determine whether the wiper is positioned in a middle of the windshield glass of the vehicle or the wiper is stopped in a position out of the bottom of the windshield glass; and
program instructions that turn the wiper relay off when the wiper is positioned at the bottom of the windshield glass.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Byun Seok Ju
• Son Sang Ryoon

Classifications

• B60S1/22 Primary

  by rotary cams · CPC title

• B60S1/482 Primary

  combined with the operation of windscreen wipers · CPC title

• B60S1/0811

  combined with mechanical control means, e.g. thermal relays · CPC title

• B60S1/08

  electrically driven {(conjoint control of windscreen wiper motor and liquid supply of windscreen washer B60S1/482; conjoint control of windscreen wiper motor and means for cleaning parts o parts other than windscreens or front windows B60S1/56, B60S1/58, B60S1/606)} · CPC title

• B60S1/0807 Primary

  using electronic control means, e.g. tubes, semiconductors (B60S1/0818, B60S1/0896 take precedence) · CPC title