DE10261607A1 - Windscreen wiper motor control method for a vehicle, e.g. aircraft, ship or motor vehicle, whereby the motor is controlled dependent on vehicle speed, and signals received from a control button - Google Patents

Abstract

The control unit (3) of a vehicle windscreen wiper motor (4) has two inputs: the speed of the vehicle (2) and a signal from a button (1). The wiper motor is controlled dependent on the vehicle speed and the operation of the button, e.g. number of presses and length of presses.

Description

The invention relates to the control the wiper motor in a vehicle.

State of the art:

The wiping speed (wiping time) becomes specified by a stick switch with several positions. The Wiping speed (wiping time) is due to the switch position fixed.

The interval Interval breaks are fixed.

The interval breaks can by a stepless switch can be adjusted.

By pressing a button, the Wipers only for activated a wipe interval.

Problem:

• - The object of the invention is a switch with many positions (off, a wipe interval, interval position, wipe duration 1 long = slow, wiping time 2 short = fast).
• - task The invention is that the wiping time is not with the switch position is firmly coupled.
• - task The invention is that the wiping time with the driving speeds (Amount of precipitation on the windshield changes) is adjusted.
• - task the invention is that the noise is minimized (squeaking and bumping of the wipers).

Solution:

These problems come with the features listed of claims solved.

Advantages of the invention:

According to the invention it is proposed that a Control unit the signals from a button and the driving speed evaluates the vehicle and then with these input variables controls the wiper motor.

If the button is pressed once and then not for a defined time t _TImax , this is considered a one-time event and the wiper motor is only activated once (a wiping cycle with t _WDmax ).

If the button is pressed twice, the button interval time t _{TI is} decisive for the wiping duration and the wiping interval. For tTI <t _WDmax , t _WD = t _TI and t _WI = t _WD . (but t _WD is always larger t _WDmax ). For t _Tl t _WDmax , t _WD = t _WDmax and t _WI = t _TI . (but t _TI is always less than t _TImax ).

If the button is pressed longer than t _TB , the wiper motor is no longer activated (wiper is off).

The button becomes another during operation times actuated shortened the wiping time or the interval time.

The button is pressed twice during operation actuated this button gives the new wiping time or the interval time Interval time (alternatively the wiper can be switched off and be switched on again).

The wiping time specified via the button or Interval times are only current specifications corresponding to the current one Driving speed. With changing Driving speed, the wiping time and the interval time are adjusted. The characteristic curves over which adjusts the wiping time and the interval time depending on Vehicle type can be defined accordingly.

If the interval time _exceeds t _TImax depending on the driving speed, the windscreen wiper _motor is no longer activated.

Embodiment:

An embodiment of the invention is described in more detail below ( 1 . 2 . 3 and 4 ).

As soon as the button ( 1 ) The windscreen wiper _{motor is} activated for more than 1.0 seconds t _TB ( 4 ) no longer activated as soon as it is in its basic position.

As soon as the button ( 1 ) for more than 6.5 seconds t _{TImax is} not _pressed a second time, only one wiping cycle is carried out.

The maximum wiping time is t _WDmax = 1.5 seconds (minimum wiping speed). The minimum wiping time is t _WDmin = 0.5 seconds (maximum wiping speed).

The wiping interval time and the wiping time become corresponding 4 linearly adapted to the driving speed.

The wiping interval time and the wiping time are determined by the control unit ( 3 ) on the wiper motor ( 4 ) depending on the input signals button ( 1 ) and driving speed ( 2 ) and the above boundary conditions.

Claims (12)

Control for wiper motor ( 4 ) of a vehicle characterized in that - the driving speed ( 2 ) Input variable is - a button ( 1 ) Input variable is - whereby a control unit ( 3 ) evaluates the input variables and the wiper motor ( 4 ) controls. Control according to claim 1, characterized in that the control unit ( 3 ) the wiper motor ( 4 ) on the first signal of the button ( 1 ) controls. Depending on a second signal using a button ( 1 ) the wiping time t _WD ≈ t _{TI is} fixed sets for t _TI ≤ t _WDmax . Control according to claim 1, characterized in that the control unit ( 3 ) the wiper motor ( 4 ) on the first signal of the button ( 1 ) controls. Depending on a second signal using a button ( 1 ) the interval time t _WI ≈ t _{TI is} determined for t _TI > t _WDmax . Control according to claim 1, characterized in that the control unit ( 3 ) the wiper motor ( 4 ) on the first signal of the button ( 1 ) controls. _If there is no second signal for a time> t _TImax , the first signal is expected again and no continuous operation is activated. Control according to claim 1, characterized in that the control unit ( 3 ) the wiper motor ( 4 ) on a signal from the button ( 1 ) is no longer activated as soon as the signal ≥ t _TB is present. Control according to claim 1, characterized in that the control unit ( 3 ) the wiper motor ( 4 ) depending on the driving speed ( 2 ) controls, the interval time t _{WI is} reduced as the vehicle speed increases. As soon as t _WI ≤ t _WDmax , continuous operation is _initiated until t _{WDmin is reached} . Control according to claim 1, characterized in that the control unit ( 3 ) the wiper motor ( 4 ) depending on the driving speed ( 2 ) controls, with increasing driving speed the wiping time t _{WD is} reduced to a minimum wiping time t _WDmin . Control according to claim 1, characterized in that the control unit ( 3 ) the wiper motor ( 4 ) depending on the driving speed ( 2 ) controls, when the driving speed is reduced, the interval time t _{WI is} increased until t _{TImax is reached} . If t _{TImax is exceeded} , the wiper _motor can also be switched off. Control according to claim 1, characterized in that the control unit ( 3 ) the wiper motor ( 4 ) depending on the driving speed ( 2 ) controls, the wiping time t _{WD is} reduced when the driving speed is reduced. As soon as t _WD ≥ t _WDmax , the system _switches to interval operation until t _{TImax is reached} . Control according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9, characterized in that the signals from the button ( 1 ) directly to the control unit ( 3 ) are guided or via a bus system. Control according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9, characterized in that the driving speed ( 2 ) directly to the control unit ( 3 ) or via a bus system. Control according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9 characterized in that the different times and characteristics the conditions of the different vehicle types via filters and controller can be adjusted.