DE102014201862A1 - Method and device for controlling a heating and / or air conditioning system and heating and air conditioning - Google Patents

Abstract

The invention relates to a method for controlling a heating and air conditioning system, in particular for a motor vehicle (10), wherein the air conditioning system has at least one temperature sensor (12), a control device and an outflow. The method is characterized in that a temperature sensor reference data record (36) is stored in the control device which has reference data for a specific reference status (36), a temperature sensor data record (56) with currently determined or measured data a determined current body temperature and a determined current disc temperature is applied, wherein the temperature sensor reference data record (36) and the temperature sensor data set (56) are compared and in a deviation takes place a control intervention in the air conditioning. The invention also relates to a device for controlling a heating and air conditioning system with a temperature sensor (12), a control device, in which the inventive method for controlling a heating and air conditioning is integrated, and having at least one vent for generating an air flow.

Description

Technical area

The invention relates to a method and a device for controlling a heating and / or air conditioning system according to the preamble of claim 1 and a heating and / or air conditioning, in particular for a motor vehicle.

State of the art

An air conditioning system, in particular for a motor vehicle, serves to create a pleasant climate for the vehicle occupants in the vehicle interior. The regulation of a temperature in the vehicle interior is typically based on a target temperature specification and a temperature measurement with an interior temperature sensor. A temperature change in the vehicle interior can take place by means of one or more outlets, which conduct an air flow into the vehicle interior, in particular blow it. This air may be, relative to the air in the passenger compartment, cooled air or heated air. This air is usually not immediately distributed when entering the vehicle interior in this same. For example, the vehicle occupant sitting in the front of the vehicle is more likely to be affected by the air flow than the vehicle occupants seated in the rear area. Thus, temperature differences in the vehicle interior usually arise. These are perceived by the vehicle occupants as unpleasant. It is known in this case to divide the vehicle interior into a plurality of vehicle interior zones, in particular climatic zones, and to supply them individually through the outlets. Nevertheless, the creation of a pleasant for the vehicle occupants climate, especially the generation of a pleasant temperature in the vehicle interior, due to different disturbances, such as sunlight on the windows of the motor vehicle, not easy. Due to the solar radiation on the windows of the motor vehicle, a heat load is introduced into the vehicle interior and parts of the vehicle interior, such as a dashboard, can be heated and subsequently emit heat. This heat load is initially unknown. In addition, the heat load can change while driving, for example, due to different angles of incidence of the sun on the windows and in the vehicle interior. The vehicle occupant is inclined to constantly readjust the air conditioning manually.

From the DE 10 2011 105 082 A1 a sensor device for a vehicle and an arrangement with such a sensor device and a windshield is known. The sensor device has a rain sensor and a temperature sensor for detecting heat radiation. The sensor for detecting heat radiation is designed for seat recognition occupancy in the vehicle.

The DE 102 00 486 A1 discloses an air conditioner and a device for controlling the thermal comfort in a motor vehicle. In the air conditioning system at least one non-contact temperature sensor and a vent are provided. In order to increase the comfort for vehicle occupants and to minimize the required heating and cooling capacity of an air conditioning system, a non-contact measuring temperature sensor is associated with each vent, which preferably together form a unit. The measuring surface detected by the temperature sensor corresponds in this case to an air inflow surface predetermined by the outflow.

From the DE 20 2008 010 875 U1 a device for controlling the interior temperature in a passenger compartment of a vehicle is known. The device has an operating element for specifying at least one interior temperature setpoint for the passenger compartment, a sensor for temperature detection, a camera for detecting at least a portion of the passenger compartment, which comprises at least parts of the different zones of the passenger compartment. The camera is an IR camera and formed with a plurality of arranged in array form IR sensors for detecting a thermal image. The thermal image of the IR camera and in particular the surface temperature of the passengers and / or in the area around them can be displayed on a display in the passenger compartment, in particular in color, with the interior temperature setpoint or the interior temperature setpoint distribution also being displayed on the display indicating the thermal image is representable.

Presentation of the invention, object, solution, advantages

It is the object of the invention to provide an improved air conditioning control method. In addition, an air conditioning system with an improved control device to achieve increased comfort should be provided.

This is achieved by a method for controlling a heating and / or air conditioning system having the features of claim 1 and a device for controlling a heating and / or air conditioning system according to claim 9.

An embodiment relates to a method for controlling a heating and / or air conditioning, in particular for a motor vehicle, wherein the heating and / or air conditioning system comprises at least one temperature sensor, a control device and at least one vent, wherein in the control device, a temperature sensor reference data set is stored, which has reference data for a specific reference status, wherein a temperature sensor data set with currently determined or measured data regarding a determined, current body temperature and / or a determined, current temperature disc is applied, wherein the temperature sensor reference data set and the temperature sensor record are compared and in case of a deviation, a control intervention takes place in the air conditioning. The temperature sensor reference record may include a reference for a particular reference status. For example, the reference status refers to "light clothing" and "no sun". This pre-determined reference status can be selected as reference for carrying out the comparison. If it is likely that the reference status does not describe the current situation of the driver or passenger in the vehicle, it can be changed. For example, in winter and in sunshine, a reference stature "thick clothes" and "sun" can be selected as the temperature sensor reference data set. The reference status and thus the temperature sensor reference data set are stored in the control device before starting or starting the method for controlling a heating and air conditioning system. The temperature sensor reference dataset and the temperature sensor dataset may preferably be a thermopile sensor reference dataset and a thermopile sensor dataset. One or more temperature sensor reference data sets may be known and present, in particular implemented in the control device. At the beginning of a journey with the motor vehicle, a specific temperature sensor reference data record describing the reference state can then be selected. The temperature sensor reference data record can be stored in a temperature sensor reference data file, in particular stored. The temperature sensor reference file may contain one or more records.

During the process, the current data recorded by the temperature sensor are then determined and stored in the temperature sensor data record. In this case, the determined data can be corrected, for example, by the solar radiation and / or by a seating position. Here, the solar radiation can be determined with a determined wheel temperature. In this case, the pane is preferably in the perspective of the temperature sensor.

Thus, a vehicle interior control based on a temperature sensor, in particular a thermopile sensor, allows. The solar radiation can be integrated into the control strategy of the method for controlling a heating and air conditioning system and thus be taken into account. Also included may be heat radiation from the vehicle interior.

In a preferred embodiment of the method for controlling a heating and air conditioning system, the measurement of the body temperature can take place by means of a thermopile sensor array. The temperature sensor, in particular the thermopile sensor, is preferably an infrared sensor (IR sensor), in particular an IR sensor array. By means of the thermopile sensor, a non-contact temperature measurement can take place. In particular, a non-contact measurement of a surface, for example, body surface, take place. As a result, a temperature distribution image can be determined. In this case, the temperature distribution image can determine a temperature of the driver and / or the passengers as well as the vehicle interior components, such as dashboard, side trim, vehicle window, in particular side window. Thermopile sensors can also determine temperature-dependent direction-dependent. The temperature and / or the temperature distribution can be analyzed and processed by means of image processing. By means of the temperature measurement of the thermopile sensor, in particular thermopile sensor array, the disadvantages of the previously used substantially punctiform temperature measurement in the vehicle interior with temperature sensors can be overcome. The temperature at the location of or the vehicle occupant can be measured separately and also the temperature of the vehicle interior or enclosing surfaces of the vehicle interior itself. In this case, the temperature can currently be determined continuously in a sufficiently large viewing angle or measuring field and heat radiation from vehicle interior surfaces. For example, a compensation of the heat input by sunlight can be done. In addition, a body zone-specific regulation can take place. This is advantageous over the control used in the prior art based on a vehicle interior temperature, which is determined more or less arbitrarily by the temperature measuring location.

The control intervention preferably takes place by means of a fuzzy control. In this case, interference quantities, such as, for example, the solar radiation are taken into account as "approximate variables" in the method for controlling a heating and air conditioning system.

In a preferred embodiment of the method for controlling a heating and air conditioning system, a face temperature of at least one vehicle occupant is measured and recorded. When identifying or assigning body zones in image processing, the identified face may be used as a landmark. This is advantageous because the face temperature is only small interference size dependent.

Preferably, the determined current wheel temperature can be assigned to a specific window in the vehicle, in particular a side window, preferably a left side window, ie on the driver's side. In this case, the vehicle geometry is known in the evaluation device of the thermopile sensor, in particular of the thermopile sensor array and / or in the control device.

In a further method step of the method for controlling a heating and air conditioning is provided that a type of clothing is determined at least one vehicle occupant.

In this case, the type of clothing is preferably determined on the basis of the solar radiation and / or the air conditioning setting, in particular of the outflow.

In the method for controlling a heating and air conditioning is provided that a query is made, whether a comfort control is active and / or is turned on. If the comfort control is not activated, the procedure for controlling a heating and air conditioning system can be ended.

In one embodiment of a device for controlling a heating and air conditioning system, in particular a motor vehicle, it is provided that in the control device, an inventive method for controlling a heating and air conditioning is implemented. Here, the heating and / or air conditioning at least one vent, at least one temperature sensor, in particular thermosensor, and a control device for controlling the heating and / or air conditioning.

In one embodiment of the device for controlling a heating and air conditioning system, the thermal sensor is a thermopile sensor, preferably a thermopile sensor array. By means of the thermopile sensor array, which has IR sensors, which can be arranged in the form of a matrix, a non-contact temperature measurement can take place in one viewing angle. The angle of view here preferably includes the vehicle occupants and the vehicle interior. The sensors of the thermopile sensor array preferably detect a face temperature of the vehicle occupant or passengers as a landmark.

By means of the method for controlling a heating and air conditioning, a comfort control can be realized, the disturbances, such as solar radiation, taken into account and included in the air conditioning control. In this case, the concept of fuzzy control is preferably used, which can evaluate sharp physical input signals by means of linguistic concepts from expert knowledge about membership functions and logical if-then operations and can form the transition from linguistic variables to sharp manipulated variables. The standard methods of "fuzzyfication", "inference with rule base " and "defuzzification" are used with the help of graphic mostly triangular fuzzy set models of fuzzy sets. The sharp physical input signals in this case relate to the temperature measurements with the temperature sensor, in particular thermopile sensor, in particular thermopile sensor array (TPA). The expert knowledge is hereby stored in the temperature sensor reference data sets, in particular thermopile sensor reference data sets, and available via the storage thereof. The expertise may also be stored in thermopile sensor reference files, especially those containing the thermopile sensor reference datasets.

Further advantageous embodiments are described by the following description of the figures and by the subclaims.

Brief description of the drawings

The invention will be explained in more detail on the basis of at least one embodiment with reference to the drawings. Show it:

1 a schematic representation of a vehicle interior with a temperature sensor, in particular thermopile sensor array,

2 a flowchart of an embodiment of the method for controlling a heating and air conditioning.

Preferred embodiment of the invention

1 shows a motor vehicle 10 with a temperature sensor 12 in particular as a thermopile sensor array 12 trained and attached to a windshield 14 of the motor vehicle 10 is arranged. An angle 16 ranges from a left side 18 up to a right side 20 in the area of an "A" designated A-pillar of the motor vehicle. The thermopile sensor array 12 This can be both a temperature of a driver 22 as well as a passenger 24 to capture. The viewpoint 16 is greater than 90 °, in particular greater than or equal to 120 °. The thermopile sensor array 12 preferably has IR sensors. These can be silicon sensors. The thermopile sensor array 12 This may consist of 32 × 31 elements, for example.

Furthermore, in 1 a steering wheel 26 , one behind the driver 22 and the passenger 24 disposed and "B" B-pillar and rear seat 28 and the C-pillar located behind and labeled "C".

The thermopile sensor array 12 is used to control surface temperatures of vehicle occupants 22 and 24 to eat. Further, the thermopile sensor array 12 arranged to measure the surface temperature of the vehicle interior, for example, not shown door panels, not shown dashboard or discs not shown. The measurement of the temperature, in particular the surface temperature, can be effected without contact and continuously. The thermopile sensor array 12 this can be a stuck thermopile sensor array 12 with a great perspective 16 or a swiveling thermopile sensor array 12 , Here, the pivoting of the thermopile sensor array 12 done by means of a motor. Alternatively, the in 1 drawn thermopile sensor array 12 a first thermopile sensor array 12 and there may be a second and / or a third and / or further thermopile sensor arrays 12 be provided. Here, the first thermopile sensor array 12 a view to the driver 22 have and the second thermopile sensor array a view to the passenger 24 to have. In this case, the viewing angles of the first and second thermopile sensor arrays are preferably smaller than the viewing angle 16 ,

2 shows the procedure 30 for controlling a heating and air conditioning system. The procedure 30 to control a heating and air conditioning is the comfort control of the air conditioning of the motor vehicle 10 and starts with a start step 32 , With process step 34 The actual comfort control cycle starts by recording the current thermopile sensor array actual values 38 , which are stored in a control device, not shown, in particular cached. The temperature sensor reference record 36 (Setpoints), in particular thermopile sensor array reference dataset 36 , has been determined in advance and indicates a particular reference status for the current thermopile sensor array record 38 , An exemplary reference status 36 is recorded for "light clothing" and "no sun". There may be several different temperature sensor reference records 36 , in particular thermopile sensor array reference data sets 36 , give.

In the next process step 40 becomes the current body temperature history of the driver 22 and / or the passenger 24 determined. The current body temperature is determined by the temperature sensor 12 , in particular the thermopile sensor array 12 , a driver's face temperature 22 and / or the passenger 24 measures. The face temperature is suitable as a landmark for a further or subsequent image processing method, since due to the body's temperature control, the face temperature is largely constant and only slightly depends on external conditions. The face temperature is not dependent on disturbance variables, such as solar radiation. For example, even sunlight increases the facial temperature only insignificantly or not at all. The clothed body zones of the driver 22 or co-driver 24 however, are subject to temperature fluctuations and therefore not well suited as a landmark. The clothed body zones of the driver 22 and / or passenger 24 show a clear dependence on disturbances such as solar radiation. For the assignment of body zones in image processing, the identified face can thus be used as an orientation mark or landmark. In particular, in process step 40 a body temperature history determined.

In the process step 42 For example, a wheel temperature that is measured becomes a locus of the automobile 10 assigned. In particular, the disk temperature is assigned to the left side window pane. This is adjacent to the driver 22 arranged. The thermopile sensor array 12 or the control device, the vehicle geometry is known, in particular stored in this or this.

The process step 44 includes a query whether the type of clothing has been determined or whether the type of clothing still needs to be determined. In the event that this is known and has already been determined - clarified by "J" -, with process step 48 continued. If the garment type has not yet been determined - indicated by an "N" -, becomes a procedural step 46 carried out in which the type of clothing is determined. This can be done by means of a query.

In the process step 48 becomes a corrected temperature sensor record 56 created, in which the solar radiation and the type of clothing are excluded.

The process step 50 is a comparative process step 50 in which the temperature sensor reference record 36 (Setpoints), especially the thermopile sensor array reference dataset 36 , and the current temperature sensor record 56 (Actual values) are compared. There is a target / actual comparison. The data records are in this case preferably matrices. Will a deviation 57 determined, this is in the process step 52 edited, that means is a deviation 57 present, the path marked "J" is followed and in the process step 54 an intervention, in particular an individual intervention 54 respectively. The comparison Soll / IST im step 50 and / or the procedure 54 can / can preferably be done with a fuzzy control.

If no deviation has been determined ("N"), the cyclic measuring method with method step becomes 34 started again. A new measuring cycle is started.

In the process step 58 a query can be made as to whether the comfort control has been activated. If this is affirmative "Y", the method with process step 34 started. If this is negated "N", so no comfort control is desired, the process is stopped. Stop or stop and end the regulatory procedure 30 takes place in the process step 60 ,

The procedure 30 for controlling a heating and air conditioning system thus includes a control strategy for a comfort control of a motor vehicle 10 , in particular a control strategy of an air conditioning system of a motor vehicle 10 , The regulatory procedure 30 is a closed-loop method. The regulatory procedure 30 can use all the possibilities of a conventional HVAC (Heating, Ventilation Air Conditioning). This may be the adjustment of comfort nozzles, the directional adjustment and / or air intensity adjustment of one or more vents in the motor vehicle 10 affect.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been 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.

Cited patent literature

• DE 102011105082 A1 [0003]
• DE 10200486 A1 [0004]
• DE 202008010875 U1 [0005]

Claims (10)

Method for controlling a heating and / or air conditioning system, in particular for a motor vehicle ( 10 ), wherein the heating and / or air conditioning at least one temperature sensor ( 12 ), a control device and an outflow device, characterized in that in the control device a temperature sensor reference data record ( 36 ), which reference data for a particular reference status ( 36 ), a temperature sensor record ( 56 ) is applied with currently determined or measured data on a determined current body temperature and / or a determined current slice temperature, wherein the temperature sensor reference data set ( 36 ) and the temperature sensor record ( 56 ) are compared and takes place in a deviation, a regulatory intervention in the air conditioning. A method according to claim 1, characterized in that the measurement of the body temperature by means of a thermopile sensor ( 12 ), in particular a thermopile sensor array ( 12 ), and the temperature sensor reference data set ( 36 ) a thermopile sensor array reference record ( 36 ) and the temperature sensor record ( 56 ) a thermopile sensor array dataset ( 56 ). Method according to claim 1 or 2, characterized in that the control intervention ( 54 ) by means of a fuzzy logic following fuzzy logic ( 54 ) he follows. Method according to one of the preceding claims, characterized in that a face temperature of at least one vehicle occupant ( 22 . 24 ) is measured. Method according to one of the preceding claims, characterized in that the determined current disk temperature is assigned to a specific disk in the vehicle, in particular a side window, preferably a left side window. Method according to one of the preceding claims, characterized in that a type of clothing at least one vehicle occupant ( 22 . 24 ) is determined. Method according to one of the preceding claims, in particular claim 6, characterized in that the type of clothing due to the sunlight and / or the air conditioner setting, in particular the vents, is determined. Method according to one of the preceding claims, characterized in that a query ( 58 ) takes place, whether a comfort control is active and / or is turned on. Device for controlling a heating and / or air conditioning system, in particular a motor vehicle ( 10 ), with at least one vent, at least one temperature sensor ( 12 ), in particular thermopile sensor ( 12 ) and a control device for controlling the heating and / or air conditioning, characterized in that in the control device, a method ( 30 ) according to one of claims 1 to 8 is implemented. Apparatus according to claim 9, characterized in that the thermopile sensor ( 12 ) a thermopile sensor array ( 12 ).

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