FR2442747A1 - Vehicle windscreen wipers control system - uses rain detecting probe connected to wiper motor speed control circuit contg. three relay driven transistors - Google Patents

Vehicle windscreen wipers control system - uses rain detecting probe connected to wiper motor speed control circuit contg. three relay driven transistors

Info

Publication number
FR2442747A1
FR2442747A1 FR7820104A FR7820104A FR2442747A1 FR 2442747 A1 FR2442747 A1 FR 2442747A1 FR 7820104 A FR7820104 A FR 7820104A FR 7820104 A FR7820104 A FR 7820104A FR 2442747 A1 FR2442747 A1 FR 2442747A1
Authority
FR
France
Prior art keywords
control system
windscreen wipers
wiper motor
motor speed
control circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR7820104A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to FR7820104A priority Critical patent/FR2442747A1/en
Publication of FR2442747A1 publication Critical patent/FR2442747A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
    • B60S1/48—Liquid supply therefor
    • B60S1/481—Liquid supply therefor the operation of at least part of the liquid supply being controlled by electric means
    • B60S1/485—Liquid supply therefor the operation of at least part of the liquid supply being controlled by electric means including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like

Abstract

The control system comprises a probe consisting of a pattern of parallel lines on the windscreen of a motor vehicle and used to detect rain for an electronic circuit. This circuit is switched manually by the driver to perform various commands such as wiper speed and operation of windscreen washer. The probe is connected to the input of a comparator which operates a relay driver transistor when its resistance is lowered by water. This activates the windscreen wipers at low speed. A second comparator operates a second relay driver transistor when the probe resistance is further decreased. This causes the windscreen wipers to be operated at high speed. When rain ceases, the motor current increases due to blade friction. This is sensed by a series resistor to which a third comparator is connected. This circuit switches off the wiper motor.
FR7820104A 1978-06-28 1978-06-28 Vehicle windscreen wipers control system - uses rain detecting probe connected to wiper motor speed control circuit contg. three relay driven transistors Withdrawn FR2442747A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7820104A FR2442747A1 (en) 1978-06-28 1978-06-28 Vehicle windscreen wipers control system - uses rain detecting probe connected to wiper motor speed control circuit contg. three relay driven transistors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7820104A FR2442747A1 (en) 1978-06-28 1978-06-28 Vehicle windscreen wipers control system - uses rain detecting probe connected to wiper motor speed control circuit contg. three relay driven transistors

Publications (1)

Publication Number Publication Date
FR2442747A1 true FR2442747A1 (en) 1980-06-27

Family

ID=9210370

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7820104A Withdrawn FR2442747A1 (en) 1978-06-28 1978-06-28 Vehicle windscreen wipers control system - uses rain detecting probe connected to wiper motor speed control circuit contg. three relay driven transistors

Country Status (1)

Country Link
FR (1) FR2442747A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0363526A2 (en) * 1988-10-03 1990-04-18 VDO Adolf Schindling AG Window-washing arrangement actuating process for a motor vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2010970A1 (en) * 1970-03-09 1971-09-30 Steger, Robert, 7030 Boblingen Electronically controlled humidity automat for automatic switching on and off of electric windshield wiper systems
DE2229974A1 (en) * 1972-06-20 1974-01-10 Schmidt Karl Heinz INDEPENDENT CONTROL OF A MOTOR VEHICLE WIPER SYSTEM
FR2221045A5 (en) * 1973-03-06 1974-10-04 Molia Louis Automobile automatic windscreen wiper system - is controlled by a heated moisture-sensing probe attached to the windscreen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2010970A1 (en) * 1970-03-09 1971-09-30 Steger, Robert, 7030 Boblingen Electronically controlled humidity automat for automatic switching on and off of electric windshield wiper systems
DE2229974A1 (en) * 1972-06-20 1974-01-10 Schmidt Karl Heinz INDEPENDENT CONTROL OF A MOTOR VEHICLE WIPER SYSTEM
FR2221045A5 (en) * 1973-03-06 1974-10-04 Molia Louis Automobile automatic windscreen wiper system - is controlled by a heated moisture-sensing probe attached to the windscreen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0363526A2 (en) * 1988-10-03 1990-04-18 VDO Adolf Schindling AG Window-washing arrangement actuating process for a motor vehicle
EP0363526A3 (en) * 1988-10-03 1990-10-17 Vdo Adolf Schindling Ag Window-washing arrangement actuating process for a motor vehicle

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Legal Events

Date Code Title Description
ST Notification of lapse