DE102019127178A1 - Method for operating an air conditioning system in a motor vehicle - Google Patents

Abstract

The invention relates to a method for operating an air conditioning system (4) of a motor vehicle (2), with the following steps: Detecting a state variable (Z1) indicative of a manual or automatic blower power selection, generating a control signal (AS1) for controlling a bar graph display (6 ) the air conditioning system (4) for displaying the blower power according to a manipulated variable indicative of the blower power in such a way that a plurality of light segments (14a, 14b, 14c, 14d, 14e, 14f, 14g) of the bar graph display (6) have a first scale ( I) if the state variable (Z1) is indicative of a manual blower power selection, and generating a further control signal (AS2) to control a predetermined number of light segments (14a, 14b, 14c, 14d, 14e, 14f, 14g) of the plurality of light segments (14a, 14b, 14c, 14d, 14e, 14f, 14g) for displaying the blower power in such a way that the plurality of light segments (14a, 14b, 14c, 14d, 14e, 14f, 14g) form a second scale (II), if the state variable (Z1) is indicative of an automatic fan power selection according to a manipulated variable indicative of the fan power, the number of light segments (14c, 14d, 14e) of the second scale (II) being smaller than the number of light segments (14a, 14b, 14c, 14d, 14e, 14f , 14g) of the first scale (I).

Description

The invention relates to a method for operating an air conditioning system of a motor vehicle.

These air-conditioning systems are used for air conditioning vehicle interiors of motor vehicles. To do this, the air conditioning systems keep the air in the vehicle interior at a comfortable temperature and humidity range.

In the case of a manually adjustable air conditioning system, the air conditioning system only cools in the set level. If the vehicle interior cools down too much during operation, it must be readjusted manually. Changing environmental conditions (e.g. driving through tunnels or changing solar radiation) can also make manual adjustment of the cooling level necessary.

With a self-regulating automatic air conditioning system, a driver or passenger sets a desired temperature, and the air conditioning system uses temperature sensors in the vehicle interior, for example, to ensure that this target temperature is reached and maintained by automatically regulating the cooling capacity. If sensors detect a deviation from the set temperature, the cooling capacity is automatically adjusted.

In addition to the interior temperature, modern air conditioning systems also regulate the amount of air (by automatically selecting the blower level) and air distribution (by controlling the various air outlets in the foot area, pedestrian airflows or the window pane).

The fan output can be selected manually e.g. in seven steps. In order to display the selected levels, the air conditioning system has seven light segments that form a bar graph display. A single luminous light element symbolizes the lowest fan level, two light segments the next fan level and seven light elements indicate the highest fan level.

In addition, a further bar graph display with e.g. three light segments is provided, which analogously shows a level for the fan power selected in an automatic mode.

Such advertisements are for example from the US 2006/0082545 A1 and U.S. 6,066,225 known.

There is therefore a need to show ways in which such operating information can be provided with less effort.

• Erfassen einer Zustandsgröße indikativ für eine manuelle oder automatische Gebläsestärkenwahl,
• Erzeugen eines Ansteuersignals zum Ansteuern einer Bargraph-Anzeige der Klimaanlage zur Anzeige der Gebläsestärke gemäß einer Stellgröße indikativ für die Gebläsestärke derart, dass eine Mehrzahl von Leuchtsegmenten der Bargraph-Anzeige eine erste Skala bilden, wenn die Zustandsgröße indikativ für eine manuelle Gebläsestärkenwahl ist, und
• Erzeugen eines weiteren Ansteuersignals zum Ansteuern einer vorbestimmten Anzahl von Leuchtsegmenten der Mehrzahl von Leuchtsegmenten zur Anzeige der Gebläsestärke, derart, dass die Mehrzahl von Leuchtsegmenten eine zweite Skala bilden, wenn die Zustandsgröße indikativ für eine automatische Gebläsestärkenwahl gemäß einer Stellgröße indikativ für die Gebläsestärke ist, wobei die Anzahl der Leuchtsegmente der zweiten Skala kleiner als die Anzahl der Leuchtsegmente der ersten Skala ist.

The object of the invention is achieved by a method for operating an air conditioning system of a motor vehicle, with the steps:

• Acquisition of a state variable indicative of a manual or automatic fan power selection,
• Generating a control signal for controlling a bar graph display of the air conditioning system to display the blower power according to a manipulated variable indicative of the blower power in such a way that a plurality of light segments of the bar graph display form a first scale if the state variable is indicative of a manual blower power selection, and
• Generating a further control signal for controlling a predetermined number of luminous segments of the plurality of luminous segments to display the blower power, in such a way that the plurality of luminous segments form a second scale if the state variable is indicative of an automatic blower power selection according to a manipulated variable is indicative of the blower power, wherein the number of luminous segments of the second scale is smaller than the number of luminous segments of the first scale.

A bar graph display (also bar display or band display) is understood to mean a display device in which a scale is used to display a size of a signal in which the length of a (often illuminated) bar or a number of activated light segments of a plurality of light segments the signal size changed. The invention therefore proposes using such a bar graph display in order to display a first scale or a second scale depending on the operating state of the air conditioning system. The light segments each form a graduation of the first scale or the second scale. In other words, the bar graph display is used twice and the number of light segments is reduced.

• Erfassen einer weiteren Zustandsgröße indikativ für eine manuelle Temperaturwahl oder eine aktivierte Temperaturreglung, und
• Erzeugen des weiteren Ansteuersignals zum Ansteuern eines Leuchtsegments, wenn die weitere Zustandsgröße indikativ für eine aktivierte Temperaturreglung ist

ausgeführt. So kann eine zusätzliche Information darüber bereitgestellt werden, ob eine automatische Temperaturreglung aktiviert wurde oder nicht.According to one embodiment, the steps are further:

• Acquisition of a further state variable indicative of a manual temperature selection or an activated temperature control, and
• Generating the further control signal for controlling a luminous segment when the further state variable is indicative of an activated temperature control

executed. In this way, additional information can be provided about whether or not automatic temperature control has been activated.

• Erfassen einer weiteren Zustandsgröße indikativ für eine manuelle oder automatische Luftverteilung, und
• Erzeugen eines weiteren Ansteuersignals zum Ansteuern eines Leuchtsegments, wenn die weitere Zustandsgröße indikativ für eine manuelle Luftverteilung ist

ausgeführt. So kann eine zusätzliche Information darüber bereitgestellt werden, ob eine automatische Luftverteilung aktiviert wurde oder nicht.According to a further embodiment, the further steps are:

• Acquisition of a further state variable indicative of manual or automatic air distribution, and
• Generating a further control signal for controlling a luminous segment if the further state variable is indicative of manual air distribution

executed. In this way, additional information can be provided about whether or not automatic air distribution has been activated.

According to a further embodiment, the further control signal is generated when the state variable is indicative of an automatic blower power selection and the further state variable is indicative of an activated temperature control and / or the further state variable is indicative of automatic air distribution. In other words, the further control signal is generated when the state variable is indicative of an automatic blower power selection and the further state variable is indicative of an activated temperature control and the further state variable is indicative of an automatic air distribution. Furthermore, it can also be provided that the further control signal is generated if only the state variable is indicative of an automatic blower power selection and the further state variable is indicative of an activated temperature control. Furthermore, it can also be provided that the further control signal is generated if only the state variable is indicative of an automatic blower power selection and the further state variable is indicative of manual air distribution.

According to a further embodiment, the second scale is arranged within the first scale. In other words, the first scale has a main direction of extent which represents an increasing signal strength from zero to the maximum value, the majority of the luminous segments being arranged along the main direction of extent. The second scale also has a main direction of extent which represents an increasing signal strength from zero to the maximum value and which coincides with the main direction of extent of the first scale, the length of the second scale at least in the main direction of extent being smaller than the length of the first scale. Thus, the bar graph display does not take up any additional area of an area inside the passenger compartment of the air conditioning system.

According to a further embodiment, the second scale is arranged in the center of the first scale. For this purpose, both the first scale and the second scale can each have an odd number of light segments, the respective central light segment of the first scale and the second scale being in the same position. For example, the first scale can have seven light segments and the second scale three light segments. In this case, the fourth luminous segment of the first scale and the second luminous segment of the second scale are in the same position. In this way, a visually appealing display of information can be achieved, with the arrangement of the second scale at the same time making it possible to provide information about the current operating mode in an easily understandable form.

According to a further embodiment, the first scale and the second scale are each linear and the first scale has a length that is greater than the length of the second scale. In this way, too, information about the current operating mode can be provided in an easily understandable form.

According to a further embodiment, the first scale and the second scale are each formed in the shape of an arcuate section and the first scale has an arc angle which is greater than the arc angle of the second scale. In other words, the first scale and the second scale each simulate the scales of a rotary actuator. For example, the first scale can have an arc angle of 315 °, while the arc angle of the second scale is 135 °. The bar graph display thus takes up particularly little area of an area of the air conditioning system on the inside of the passenger compartment.

According to a further embodiment, the second scale is arranged above a horizon line. A horizon line is understood to be a horizontally extending line which divides the bar graph display into an upper section and a lower section. In other words, the first scale is in both the lower section and the upper section, while the second scale is only in the upper section. A visually appealing display of information can also be achieved in this way, with the arrangement of the second scale at the same time making it possible to provide information about the current operating mode in an easily understandable form.

According to a further embodiment, at least one of the control signals is designed to effect a color selection. Multi-colored light segments, such as multi-colored LEDs, can also be controlled in a targeted manner in order to provide additional information.

The invention also includes a computer program product, an air conditioning system and a motor vehicle with such an air conditioning system.

• 1 in schematischer Darstellung eine Bargraph-Anzeige gemäß einem ersten Ausführungsbeispiel einer Klimaanlage eines Kraftfahrzeugs.
• 2 in schematischer Darstellung eine Logik zur Ansteuerung der in 1 gezeigten Bargraph-Anzeige.
• 3A - 3C in jeweils schematischer Darstellung verschiedene Wiedergaben der in 1 gezeigten Bargraph-Anzeige.
• 4A - 4C in jeweils schematischer Darstellung verschiedene Wiedergaben der in 1 gezeigten Bargraph-Anzeige.
• 5A - 5C in jeweils schematischer Darstellung verschiedene Wiedergaben einer Bargraph-Anzeige gemäß einem zweiten Ausführungsbeispiel.

The invention will now be explained with reference to a drawing. Show it:

• 1 a schematic representation of a bar graph display according to a first exemplary embodiment of an air conditioning system of a motor vehicle.
• 2 a schematic representation of a logic for controlling the in 1 shown bar graph display.
• 3A - 3C various representations of the in 1 shown bar graph display.
• 4A - 4C various representations of the in 1 shown bar graph display.
• 5A - 5C in each case a schematic representation of various reproductions of a bar graph display according to a second exemplary embodiment.

It gets on first 1 Referenced.

An air conditioning system is shown 4th a motor vehicle, such as a car.

The air conditioner 4th has control elements (not shown) for setting a target value for the temperature and other variables, such as a fan power, and one as a bar graph display 6th trained display unit.

The bar graph display 6th can, for example, in a center console of the motor vehicle 2 be arranged. The part of a dashboard in the motor vehicle is placed under a center console 2 understood that begins at about knee height between the two front footwells and extends to the position of the armrest between the front seats of the motor vehicle 2 extends.

The bar graph display 6th has a first display field in the present exemplary embodiment 8th with a light segment 12th and with a second display panel 10 with seven light segments 14a , 14b , 14c , 14d , 14e , 14f , 14g on. Deviating from the present exemplary embodiment, in particular the number of light segments 14a , 14b , 14c , 14d , 14e , 14f , 14g of the second display field 10 also be another. The light segment 12th as well as the seven light segments 14a , 14b , 14c , 14d , 14e , 14f , 14g each can be LEDs.

An activated light segment 12th of the first display field 8th symbolizes an automatic air distribution and / or an automatic blower power selection, while the seven light segments 14a , 14b , 14c , 14d , 14e , 14f , 14g of the second display field 10 symbolize a manually set or automatically determined blower power.

The air conditioner 4th is designed to have the plurality of light segments 14a , 14b , 14c , 14d , 14e , 14f , 14g to be controlled in such a way that with an increasing fan power the number of light segments 14a , 14b , 14c , 14d , 14e , 14f , 14g increases continuously in a clockwise direction when the fan speed is selected manually. In other words, with a first, lowest blower level, only the light segment is turned on 14a activated, at the second, next higher blower level, the light segments are activated 14a and 14 b activated etc. up to the highest fan level, all light segments 14a , 14b , 14c , 14d , 14e , 14f , 14g are activated. In the present exemplary embodiment, a blower power can be displayed in seven stages if it was set manually.

Thus, the light segments form 14a , 14b , 14c , 14d , 14e , 14f , 14g a first scale I. . In a departure from the present exemplary embodiment, the number of light segments 14a , 14b , 14c , 14d , 14e , 14f , 14g the first scale I. also be another.

Furthermore, the air conditioning 4th designed to the plurality of light segments 14a , 14b , 14c , 14d , 14e , 14f , 14g in such a way that they have a second scale II form, with the second scale II fewer light segments than the first scale I. having. In the present exemplary embodiment, the light segments form 14c , 14d , 14e the second scale II . In a departure from the present exemplary embodiment, the number of luminous segments of the second scale II also be another. The light segments 14c , 14d , 14e the second scale II are from the air conditioner 4th activated if there is an automatic fan speed selection.

In addition is the air conditioning 4th trained to use the second scale II only to be activated if there is also an activated temperature control.

Furthermore is the air conditioning 4th designed to the light segment 12th to be activated if there is automatic air distribution and / or automatic temperature control.

In the present embodiment, the first scale I. and the second scale II each formed in the shape of an arcuate section. Their respective main direction of extent is therefore arcuate in the present exemplary embodiment. In other words, the first scale I. and the second scale II each simulate the scales of a turntable. The first scale points I. an arc angle which is greater than the arc angle of the second scale II is. In the present Embodiment has the first scale I. an arc angle of 315 °, while the second scale II has an arc angle of 135 °.

Furthermore, in the present exemplary embodiment is the second scale II within the first scale I. arranged, the second scale II centered on the first scale I. is arranged, ie both at the first scale I. as well as the second scale II the respective middle light segment is the light segment 14d .

Furthermore, in the present exemplary embodiment, there is the second scale II above a horizon line H arranged. The horizon line H divides the bar graph display 6th into an upper section and a lower section. The first scale i is located in both the lower section and the upper section, while the second scale II is only in the upper section.

It will now be made with additional reference to FIG 2 a logic 16 the air conditioning 4th explained. The logic 16 and their components can be formed by hardware and / or software components.

From the components of logic 16 are a comparator 18th and an AND gate 20th shown.

The comparator 18th is - as will be explained in more detail later - designed to check whether an input variable of a plurality of input variables, in the present exemplary embodiment three input variables, is greater than or equal to one. If this is the case, a logic one signal is provided as the output signal, otherwise a logic zero.

The AND gate 20th is - as will be explained in more detail later - designed to check whether all input variables of a plurality of input variables, in the present exemplary embodiment three input variables, have the value of logical one. If this is the case, a logic one signal is provided as the output signal, otherwise a logic zero.

Logic input variables 16 are the state variables Z1 , Z2 , Z3 . Output variables of the logic 16 are the control signals AS1 , AS2 , AS3 .

With the state variable Z1 it can be a four-valued variable to which the value zero is assigned if a manual fan speed selection is available or has been recorded.

If the state variable Z1 is indicative of a manual blower power selection, i.e. is logical zero, the control signal AS1 generated with which the plurality of luminous segments 14a , 14b , 14c , 14d , 14e , 14f , 14g are controlled in such a way that they are the first scale I. form.

Furthermore, the state variable Z1 the value one is assigned if a fan speed 1 was selected for an automatic fan speed selection. Furthermore, the state variable Z1 the value two is assigned if a fan speed is selected with an automatic fan speed selection 2 was selected and the state variable Z1 the value three is assigned if a fan speed 3 has been selected for an automatic fan speed selection.

If the state variable Z1 the control signal has a value greater than or equal to one AS2 generated. In other words, the comparator 18th checks whether the state variable Z1 has a value of at least one or greater.

The control signal AS2 controls the light segments 14c , 14d , 14e in such a way that they are the second scale II form.

With the state variable Z2 it can be a logical variable to which the value logical zero is assigned if manual temperature control is present or has been recorded. If, on the other hand, an automatic temperature control is present or has been recorded, the value logical one is assigned to the logical variable.

With the state variable Z3 it can also be a logical variable to which the value logical zero is assigned if manual air distribution is present or has been detected. If, on the other hand, automatic air distribution is present or has been detected, the value logical one is assigned to the logical variable.

The state variable Z2 and the state variable Z3 as well as the output of the comparator 18th are used as input variables to the AND gate 20th fed. The control signal AS3 to control the light segment 12th is thus generated when an automatic temperature control is present or has been recorded and an automatic air distribution is present or has been recorded and an automatic blower power selection is present or has been recorded.

It is now also applied to the 3A to 3C Referenced.

It is shown that - if there is an automatic blower power selection and manual air distribution and activated temperature control - the second scale II is used. The number of light segments increases as the fan speed increases 14c , 14d , 14e , continuously in a clockwise direction. In other words, with one first, lowest fan speed selection is only the light segment 14c activated, with the second, next higher fan speed selection, the light segments are activated 14c and 14d activated, and in the highest fan speed selection the light segments 14c and 14d as well as 14e are activated. In the present exemplary embodiment, a blower power selection can be displayed in three stages, as is done by the air conditioning operator 4th was discontinued.

It should be noted that the light segments 14a , 14b and 14f , 14g that do not belong to the second scale II belong, stay inactive here.

In addition, there is also the light segment 12th deactivated.

It is now also applied to the 4A to 4C Referenced.

The representations of the 4A to 4C differ from those of the 3A to 3C in that - if there is an activated temperature control and an automatic fan speed selection and automatic air distribution, - the second scale II is used. The number of light segments increases as the fan speed increases 14c , 14d , 14e , continuously in a clockwise direction. In other words, with a first, lowest fan power selection, only the light segment will be 14c activated, with the second, next higher blower power selection, the light segments are activated 14c and 14d activated, and the light segments are activated in the highest fan power selection 14c and 14d as 14e activated. A blower power can therefore be displayed in three stages, as indicated by the operator of the air conditioning system 4th was discontinued.

It should be noted that the light segments 14a , 14b and 14f , 14g that do not belong to the second scale II belong, stay inactive here.

Also, here is the light segment 12th active.

It is now also applied to the 5A to 5C Referenced.

The representations of the 5A to 5C differ from those of the 4A to 4C thereby, the first scale I. and the second scale II are in each case not formed in the shape of an arcuate section but rather straight.

The number of light segments increases in an analogous manner 14a , 14b , 14c , 14d , 14e , 14f , 14g the first scale I. or the light segments 14c , 14d , 14e the second scale II with an increasing blower power selection continuously from left to right.

In the present exemplary embodiment, the control signals are AS1 , AS2 , AS3 designed to use single-colored luminous segments 12th and 14b , 14c , 14d , 14e , 14f , 14g head for. In a departure from the present exemplary embodiment, it can be provided that the luminous segments 12th and 14b , 14c , 14d , 14e , 14f are multicolored and the control signal AS1 , AS2 , AS3 additionally effect a color selection.

So can a bar graph display 6th used twice, thus reducing the number of light segments.

List of reference symbols

2

Motor vehicle

4th

air conditioning

6th

Bar graph display

8th

Display panel

10

Display panel

12th

Light segment

14a

Light segment

14b

Light segment

14c

Light segment

14d

Light segment

14e

Light segment

14f

Light segment

14g

Light segment

16

logic

18th

Comparator

20th

AND gate

AS1

Control signal

AS2

Control signal

AS3

Control signal

H

Horizon line

I.

scale

II

scale

Z1

State variable

Z2

State variable

Z3

State variable

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• US 2006/0082545 A1 [0008]
• US 6066225 [0008]

Claims (22)

Method for operating an air conditioning system (4) of a motor vehicle (2), comprising the steps: Acquisition of a state variable (Z1) indicative of a manual or automatic blower power selection, Generating a control signal (AS1) to control a bar graph display (6) of the air conditioning system (4) to display the fan power according to a manipulated variable indicative of the fan power in such a way that a plurality of light segments (14a, 14b, 14c, 14d, 14e, 14f , 14g) of the bar graph display (6) form a first scale (I) if the state variable (Z1) is indicative of a manual blower power selection, and Generation of a further control signal (AS2) to control a predetermined number of light segments (14a, 14b, 14c, 14d, 14e, 14f, 14g) of the plurality of light segments (14a, 14b, 14c, 14d, 14e, 14f, 14g) for display the blower power, in such a way that the plurality of light segments (14a, 14b, 14c, 14d, 14e, 14f, 14g) form a second scale (II) if the state variable (Z1) is indicative of an automatic blower power selection according to a manipulated variable indicative of the Blower power is, the number of light segments (14c, 14d, 14e) of the second scale (II) is smaller than the number of light segments (14a, 14b, 14c, 14d, 14e, 14f, 14g) of the first scale (I). Procedure according to Claim 1 , with the further steps: Detecting a further state variable (Z2) indicative of a manual temperature selection or an activated temperature control, and generating a further control signal (AS3) for controlling a light segment (12) when the further state variable (Z2) is indicative of an activated one Temperature control is. Procedure according to Claim 1 or 2 , with the further steps: Detecting a further state variable (Z3) indicative of manual or automatic air distribution, and generating a further control signal (AS3) for controlling a light segment (12) when the further state variable (Z3) is indicative of automatic air distribution . Procedure according to Claim 2 or 3 , the further control signal (AS3) being generated when the state variable (Z1) is indicative of an automatic blower power selection and the further state variable (Z2) is indicative of an activated temperature control and / or the further state variable (Z3) is indicative of automatic air distribution. Method according to one of the Claims 1 to 4th , wherein the second scale (II) is arranged within the first scale (I). Procedure according to Claim 5 , wherein the second scale (II) is arranged centrally to the first scale (I). Method according to one of the Claims 1 to 6th , wherein the first scale (I) and the second scale (II) are each linear and the first scale (I) has a length which is greater than the length of the second scale (II). Method according to one of the Claims 1 to 7th , wherein the first scale (I) and the second scale (II) are each formed in the shape of an arcuate section and the first scale (I) has an arc angle which is greater than the arc angle of the second scale (II). Procedure according to Claim 8 , wherein the second scale (II) is arranged above a horizon line (H). Method according to one of the Claims 1 to 9 wherein at least one of the control signals (AS1, AS2, AS3) is designed to effect a color selection. Computer program product designed to carry out a method according to one of the Claims 1 to 10 . Air conditioning system (4) for a motor vehicle (2), the air conditioning system (4) being designed to read in a state variable (Z1) indicative of a manual or automatic blower power selection, a control signal (AS1) for controlling a bar graph display (6) Air conditioning system (4) to display the fan power according to a manipulated variable indicative of the fan power, such that a plurality of light segments (14a, 14b, 14c, 14d, 14e, 14f, 14g) of the bar graph display (6) have a first scale (I) if the state variable (Z1) is indicative of a manual blower power selection, and a further control signal (AS2) for controlling a predetermined number of light segments (14a, 14b, 14c, 14d, 14e, 14f, 14g) of the plurality of Generate luminous segments (14a, 14b, 14c, 14d, 14e, 14f, 14g) for displaying the blower power in such a way that the plurality of luminous segments (14a, 14b, 14c, 14d, 14e, 14f, 14g) have a second scale (II ) if the state variable (Z1) is indicative of a Automatic fan power selection according to a manipulated variable is indicative of the fan power, the number of light segments (14c, 14d, 14e) on the second scale (II) being smaller than the number of light segments (14a, 14b, 14c, 14d, 14e, 14f, 14g) the first scale (I) is. Air conditioning (4) after Claim 12 , the air conditioning system (4) being designed to read in a further state variable (Z2) indicative of a manual temperature selection or an activated temperature control and to generate the further control signal (AS3) for controlling a light segment (12), if the further state variable (Z2) is indicative of an activated temperature control. Air conditioning (4) after Claim 12 or 13th , the air conditioning system (4) being designed to read in a further state variable (Z3) indicative of manual or automatic air distribution and to generate a further control signal (AS3) for controlling a light segment (12) when the further state variable (Z3) is indicative of is an automatic air distribution. Air conditioning (4) after Claim 13 or 14th The air conditioning system (4) is designed to generate the further control signal (AS3) when the state variable (Z1) is indicative of an automatic blower power selection and the further state variable (Z2) is indicative of an activated temperature control and / or the further state variable (Z3) is indicative of automatic air distribution. Air conditioning (4) after one of the Claims 12 to 16 , wherein the second scale (II) is arranged within the first scale (I). Air conditioning (4) after Claim 16 , wherein the second scale (II) is arranged centrally to the first scale (I). Air conditioning (4) after one of the Claims 12 to 17th , wherein the first scale (I) and the second scale (II) are each linear and the first scale (I) has a length which is greater than the length of the second scale (II). Air conditioning (4) after one of the Claims 12 to 18th , wherein the first scale (I) and the second scale (II) are each formed in the shape of an arcuate section and the first scale (I) has an arc angle which is greater than the arc angle of the second scale (II). Air conditioning (4) after Claim 19 , wherein the second scale (II) is arranged above a horizon line (H). Air conditioning (4) after one of the Claims 12 to 20th , wherein at least one of the control signals (AS1, AS2, AS3) is designed to effect a color selection. Motor vehicle (2) with an air conditioning system (4) according to one of the Claims 12 to 21 .

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