JPH0580363B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an air-conditioning system for a vehicle, such as an automobile, according to the preamble of claim 1.

PRIOR TECHNOLOGY In this type of known air conditioner, the input keys contain an air conditioner adjustment program (factory program) fixed and preset by the factory in order to adapt the comfort level and air conditioning to individual wishes. There is a way to manually intervene. The previously given factory program is rewritten to that extent and the air conditioner regulator is set to the input values.

Problem to be Solved by the Invention However, these manual input values do not change and remain constant, so that the level of comfort instantaneously achieved by the air conditioner regulator is maintained over a relatively long time interval. Therefore, separate manual correction is necessary at all times.

Means for Solving the Problems and Effects of the Invention On the other hand, the air conditioner device of the present invention having the features set forth in the gist of claim 1 has the following advantages: It has the advantage that the program can match individual wishes point-wise and linearly. Depending on the individual wishes entered via the correction key, the factory program will be reprogrammed into an individually matched user program. This allows the air conditioner parameters to be adjusted instantaneously and subsequently on the basis of the current environmental parameters according to the adjustment characteristic curve of the user program, modified for the program in a given area, so that the individual considerations The obtained indoor comfort level is automatically maintained semi-permanently over a long period of time, without the need to manually set it later, even if environmental parameters change.
The modification of the factory program is then optimally adapted to the needs and senses of the user by arbitrarily repeated operation of the various correction keys,
This can be carried out until a user program is created as the basis for the dominant work program of the air conditioner adjustment section.

Advantageous embodiments of the air conditioning device according to the invention are apparent from the embodiments of the patent claims.

Advantageous embodiments are described in claim 2. With this configuration, all corrections entered by means of the correction keys act on reference points (interpolation reference value points) of the discrete adjustment characteristic curve in which each correction is entered (relevant area).
All points between the individual reference points are generated by interpolation.

An advantageous embodiment of the invention is defined in claim 4.
It is clear from the section. With this configuration, corrections that would produce meaningless results are suppressed, and corrections that are as physically meaningful as possible are performed.

Advantageous embodiments of the invention are also disclosed in claim 5. With this configuration, the factory program remains unchanged despite changes and is stored in a fixed value memory so that it can be called up. The working memory always stores the currently used program (factory program or user program) that is the basis for air conditioner adjustment. The factory program can therefore be called up again at any time by means of a key press and entered into the working memory, for example, when the user gets lost in the operation of the user program and wishes to start again from a predetermined starting point. . For this purpose, according to claim 9, the factory program call key can be operated on the operation panel.

Advantageous embodiments of the invention are also apparent from the patent claim 6. The cover plate protects the correction key against accidental manipulation.
If a contact according to claim 7 is provided, in which the cover plate is operated into its closed state, the corrections previously given by key selection are automatically and fixedly received by the user program. stored in working memory.

Advantageous embodiments are also specified in claim 8. With this design, different individual air conditioning settings for different areas of the vehicle interior are possible within a range and a high degree of comfort is achieved even in the rear seats.

Embodiments Next, the present invention will be explained in detail with reference to the drawings, with reference to the illustrated embodiments.

The air conditioning system shown schematically in FIG. 1 is connected on the one hand to sensors 11 to 14 for detecting environmental parameters, and on the other hand to air distribution regulating elements 15, temperature flap regulating elements 16,
Adjustment or actuation elements 1 for controlling air conditioning parameters, such as a blower speed regulator 17 and a mixing air flap adjustment element (not shown)
5 to 17. The temperature flap regulator 16 regulates the amount of air conducted through the heat exchanger 18, while the mixing air flap regulator regulates the ratio of recycled air to fresh air by adjusting the corresponding flap position. . The rotational speed of the blower 29 is continuously regulated via the blower rotational speed regulator 17 by controlling the operating current I of the blower motor. Three of the sensors 11-14, 11-13, are temperature sensors for detecting outside air temperature, indoor temperature and mixed air temperature, while sensor 14 is a solar sensor for detecting incident sunlight.

At least one operating panel 19 (FIG. 2) is also connected to the adjusting device 10, which carries operating keys and indicator elements (FIG. 2). For example, three instruction parts 2
0 to 22 are provided. One of them indicates the operating status of the rear window heating system (on/off), one indicates the operating status of the windshield defroster (on/off) and one indicates the adjusted fresh air/circulation setting. Indicate the air ratio. Temperature indicator 23 for preselected interior temperature which can be manually predetermined separately for the driver's seat side and the passenger's seat side.
to 23' and two preselection keys 24, 2, respectively, for presetting these preselection temperatures.
5 to 24', 25' are provided. key 2
The temperature preselected by 4, 24' is increased and reduced by keys 25, 25'. The scale indicating units 26 and 26' indicate the set temperature system (Celsius or Fahrenheit) that corresponds to the temperature value to be read by the indicating unit 23.

A plurality of input or correction keys 30 to 37 are grouped together in an operating area 28 which can be covered by a cover plate 27 (FIG. 3). These keys are used to manually change air conditioner parameters. Air conditioner parameters such as fan speed and air distribution are represented by symbols. Since the correction keys 30 to 37 are provided separately for the driver's seat and the passenger seat, some of the input keys are provided in duplicate. 30 and 3
The input keys indicated by 1 are used to increase (+) and decrease (-) the air conditioner parameter "Blower rotation speed", and the input keys indicated by 31 to 37 or 31' to 37' are used to increase or decrease the air conditioning parameter air distribution, the input keys 32, 33 act to increase or decrease the amount of air supplied to the defroster nozzle, and the input keys 34, 35 act to increase or decrease the amount of air supplied to the defroster nozzle. The input keys 36, 37 act to change the amount of air supplied to the floor space nozzles each time. The same applies to the input keys 32' to 37' for the passenger seat, which, for the sake of simplicity, will not be described separately below. Additionally provided in the operating area 28 are factory program call keys 38, 38' and a programming release contact 39. These functions will be explained later.

The regulating device 10 has a calculation and control unit, which is preferably configured as a microprocessor 40, a fixed value memory 41, and a working memory 42, which is configured as a read-write memory. Fixed value memory 41 stores a previously fixed adjustment characteristic curve. The air conditioning inside the car is determined according to this characteristic curve: room temperature, air mixture ratio (circulated air/fresh air composition),
Air conditioner parameters such as the defroster, air distribution to the center and floorspace nozzles are adjusted depending on environmental parameters such as the indoor setpoint temperature and the actual indoor temperature, the outside air temperature, the mixed air temperature and the incident solar radiation. The entire adjustment characteristic curve stored in fixed value memory 41 is referred to as a factory program.

Figures 4 and 5 show two of the adjustment characteristic curves.
is shown as an example. In this case, the characteristic curve diagram in FIG. 4 shows the indoor target temperature T _IS to be adjusted by the regulating device 10 and the selected indoor temperature T, which is input via the preselection keys 24 and 25 and is dependent on the outside air temperature T _A. The difference T _IS −T is shown. A regulating characteristic curve of this type allows a considerably improved regulating characteristic than when the room preselected temperature directly predetermines the room setpoint temperature and is therefore the same as the room setpoint temperature. The regulating characteristic curve in FIG. 5 shows the operating or operating current I of the blower as a function of the difference ΔT _i between the actual indoor temperature T _Ia and the indoor setpoint temperature T _IS .
Since the fan speed is proportional to the operating current I, this is a regulating characteristic curve for the fan speed.

The entire factory program is programmed into the working memory 42 upon first activation of the air conditioning system or by actuation of the factory program call key 38. The program stored in each case in the working memory 42 determines the adjustment characteristics of the adjustment device 10. All regulating characteristic curves are stored in the working memory 42 only in the form of principal points or principal values and are generated by interpolation routines for the instantaneous regulating region, which are carried out in the microprocessor 40. . At that time, the instantaneous adjustment area is
Adjustment device 1 as electrical signals from sensors 11 to 14
The environmental parameters provided at 0 are determined by the room temperature, mixed air temperature, outside air temperature, and incident solar radiation. The microprocessor 40 then generates adjustment variables for the adjustment or actuating members 15 to 17, which adjust the air conditioner parameters according to a predetermined adjustment characteristic curve at given environmental parameters.

For example, when the outside temperature T _A = 20℃, the temperature indicator 2
3 (Fig. 2) Room temperature T = 23
When C is preselected, the tuning characteristic curve T _IS - of FIG. 4, the key points of which are stored in the working memory 42,
T=f( _TA ) yields the value 1 for T _IS -T.
The desired indoor temperature, which is predetermined by the regulating characteristic curve and to be set by the regulating device 10, is therefore T _IS =24°C. The temperature flap adjustment element 16 is then supplied with an adjustment variable that corresponds to the temperature difference between the setpoint value 24 DEG C. and the actual value (sensor 12). By this adjustment amount, the temperature flap is caused by the amount of air introduced through the heat exchanger 18 reaching the indoor target temperature.
It is adjusted until it is metered to be T _IS .

However, at the same time, the fan speed is also stored in the working memory 42, the adjustment characteristic curve I shown in FIG.
= f(ΔT _i ) and is adjusted in the following cases. That is, the mixed air temperature T _B is greater than 40℃ and the outside air temperature T _A is 5℃ higher than the indoor target temperature T _IS .
or when the outside air temperature T _A is 5° C. or more higher than the indoor target temperature. In this example, the outside air temperature T _A = 20°C, so 5°C
Only lower than the indoor target temperature T _IS . For example, if the actual room temperature T _Ia (sensor 12) is 29℃,
A temperature difference of 5 DEG C. occurs for ΔT ₁ =T _Ia −T _IS , which results in an operating current I of 7 A for the blower motor according to the regulating characteristic curve of FIG. Therefore, the blower rotation speed regulator 17 is controlled by the microprocessor 4.
0 controls the operating current of 7A to flow to the blower motor.

In a similar manner, the microprocessor 40 controls the air distribution control element 16 by means of a corresponding control characteristic curve.
An adjustment amount is also generated so that a corresponding amount of air reaches the defroster nozzle, the center nozzle and the floor space nozzle.

If the air conditioner adjustment predetermined in such a factory does not correspond to the user's sense of comfort, the user can adjust the reference point of the adjustment characteristic curve by corresponding individual changes of the air conditioner parameters fan speed and air distribution. (reference value point for interpolation) can be changed permanently only in the instantaneous adjustment region. A cover plate 2 covering the operating area 28 for this purpose
7 from the operation panel 19, the input key 30
-37 can be operated freely. The user inputs a desire to reduce the number of rotations of the blower by operating the input key 31, for example. This correction value reaches the regulating device 10 and in this case is extracted by the microprocessor 40 from the regulating characteristic curve of _{FIG .}
=24°C, T _Ia =29°C) and a predetermined value for an operating current of 7 A.
Since the instantaneous operating point is obtained by interpolation between the reference points ΔT _i =4°C and ΔT _i =6°C, it is not the operating point itself, but the reference point closest to the instantaneous operating point, in this case ΔT _i =4°C is changed accordingly to the applied correction value. The adjustment characteristic curve obtains the course shown in dashed lines in FIG. 5, which in this case is generated by an interpolation routine associated with a corrected reference point ΔT _i =4° C. In this way, the operating current I is maintained at this operating point from now on and is always I = 6.5A until a new correction is made.
is set to

By the way, when the cover plate 27 is closed,
Release contact 39 is operated and a write command is supplied to microprocessor 40. This causes a correction value 5A for the reference point ΔT _i =4° C. to be written into the working memory 42 and from which the fixed component of the factory program that was subsequently modified at this point is stored in the working memory 42 . Correction processes of this type can be carried out arbitrarily by actuating the various input keys 30 to 37 at different points in time and therefore in different instantaneous adjustment ranges, depending on the environmental parameters. Only limited corrections are then carried out for the instantaneous adjustment points in the respective responsive adjustment characteristic curve that are thus determined. If the release contact 39 is actuated by closing the cover plate 27, all corrections are taken into the working memory 42 and thus into the program. The entire modified factory program forms a so-called user program in the working memory 42.

Before processing the individual correction values, they are checked by the microprocessor 40 for plausibility, ie whether they are within a physically meaningful range of air conditioning regulation. This range is predetermined in the factory program and called by microprocessor 40 each time. When the correction value is outside that range, the correction value is automatically changed by the microprocessor 40 to the nearest limit value and subsequently this limit value is adjusted according to the adjustment characteristic curve as described above. is subsequently processed as a correction value for changing the value.
Users become confused due to repeated program changes,
As a result, when the air conditioner adjustment no longer corresponds to the requirements, the user can operate the factory program call key 38 to restore the factory program permanently stored in the fixed value memory 41 and continue working. A program is input into memory 42. At that time, the user program stored there is rewritten. The user can then begin creating a new user program tailored to his tastes and comfort requirements.

In order to improve air-conditioning comfort, the interior of a motor vehicle is divided into so-called air-conditioning areas, each of which is assigned a corresponding preselection key and an input key. The keys for the driver's seat and the passenger seat are preferably combined in a single operating panel 19, as shown in FIG. The rear seats of a motor vehicle can also be divided into two air-conditioning areas, in which case the keys assigned to each half of the rear seats can also advantageously be combined in an operating panel arranged, for example, in the center console. It is being In this way, the occupants of a motor vehicle can adapt the air conditioning that occurs directly in their area to their own needs and preferences. Due to the unavoidable mutual influence of the air-conditioning areas, the above can only be carried out to a limited extent. For this,
It is necessary to provide one adjustment or operating member 15, 17 for each air-conditioning area. Separate factory programs for each air conditioning area must also be stored in the operating memory 42 and can be accessed separately by the microprocessor 40 under appropriate control via the various operating panels. can. The factory program is the same and the user program varies considerably depending on the individual actuation of the input keys in the different air conditioning areas.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of the air conditioner, Fig. 2 is a plan view of the operation panel of the air conditioner shown in Fig. 1 with the cover plate for the program correction key removed, and Fig. 3 is a schematic diagram of the air conditioner. 2 is a side view of the operation panel shown in FIG. 2 with the cover plate half-open, and FIG. 4 shows an adjustment characteristic curve showing the difference between the target indoor temperature value and the preset value depending on the outside temperature FIG. 5 is a diagram showing a regulating characteristic curve for the operating current of the blower as a function of the difference between the actual value and the setpoint value of the room temperature. 10... Adjustment device, 11-14... Sensor, 15-
17... Adjustment member, 19... Operation panel, 24, 25
...Preselection key, 27...Cover plate, 30-3
7... Correction key, 38... Factory program call key, 39... Release contact, 40... Microprocessor, 42... Working memory.

Claims (1)

[Claims] 1. Air conditioner parameters determining indoor air conditioning, such as room temperature, air mixture, air distribution and fan speed, are determined using sensors according to a predetermined adjustment characteristic curve (factory program). Adjustment device for adjusting depending on detected environmental parameters such as indoor temperature, outdoor temperature, mixed air and incident solar radiation, and manual preselection key for indoor preset temperature and manual for varying air conditioner parameters - an input key, and the input key is connected to the adjustment device 10. In an air conditioning system for a vehicle, which is configured as correction keys 30 to 37 for generating correction values for the associated air conditioning parameters, the regulating device 10
is configured such that the adjustment characteristic curve is changed (program change) into a continuously corrected characteristic curve corresponding to the applied correction value only in the instantaneous adjustment region determined by the environmental parameters. An air conditioner device characterized by: 2. The adjustment characteristic curve has reference points memorized and is generated by an interpolation routine, and whenever the adjustment characteristic curve is corrected, only the reference points lying in the instantaneous adjustment region are changed into correction values. The air conditioner device according to item 1. 3. An air conditioner system according to claim 2, in which only selected reference points can be changed and in each case only the reference point closest to the instantaneous adjustment point on the adjustment characteristic curve is corrected. 4. The adjustment device 10 is constructed in such a way that the correction values given in advance by the correction keys 30 to 37 are checked for plausibility and limited in physical significance to limit values. The air conditioner device according to any one of paragraphs 1 to 3. 5. The adjustment device 10 has a fixed value memory 41 in which a factory program is stored, and a factory program can be programmed into the fixed value memory 41, and a changed reference value can be written on the reference point where the factory program is stored.
4. Air conditioner device according to claim 1, further comprising a working memory 42 which is configured as a read/write memory. 6 Preselection and correction keys 24, 25 and 30
- 37 are housed in the operation panel 19, and the correction keys 30-37 can be covered by the cover plate 27. . 7 The cover plate 27 is
7. Air conditioner device according to claim 6, which cooperates with a release contact (39) which generates a write command for writing the changed reference point into the working memory (42) upon closing of the air conditioner (39). 8. The room is divided into a plurality of air-conditioning zones which are centrally controlled by the regulating device 10, and separate preselection and correction keys 24, 25 and 30-37 are provided for each air-conditioning zone. An air conditioner device according to any one of claims 1 to 8. 9. At least one operation panel 19 is provided with a factory program call key 38,
A device according to any one of claims 6 to 8, which is connected to the call key adjustment device 10 and releases the factory program so as to input a new program into the working memory 42 during operation. Air conditioning equipment. 10. The air conditioning system of claim 8 or 9, wherein the factory program is stored and modifiable separately for each air conditioning area.