KR101315755B1 - Air conditioning system for automotive vehicles - Google Patents

Abstract

The present invention relates to a vehicle air conditioner, and accurately predicts the degree of contamination in a vehicle on the basis of data obtained through analysis of the passenger information, while promptly and actively responding to changes in the air pollution conditions caused by the passenger. It aims to be able to ventilate the air in a vehicle interior effectively.
In order to achieve the above object, the present invention provides an air-conditioning case having an outdoor air inlet and an internal air inlet, an intake door for controlling the opening amount of the internal and external air inlets, and a blower that sucks and blows the internal and external air into the cabin. A vehicle air conditioner comprising: passenger information analyzing means for analyzing information of a passenger in a vehicle; A cumulative amount of carbon dioxide calculating unit configured to calculate accumulated amount of carbon dioxide per unit time in a vehicle by processing passenger information analyzed by the passenger information analyzing means; And a control unit for controlling the opening amount of the intake door and the rotational speed of the blower according to the carbon dioxide accumulation amount per unit time calculated by the carbon dioxide accumulation amount calculating unit.

Description

TECHNICAL FIELD [0001] The present invention relates to an air conditioning system for an automobile,

The present invention relates to a vehicle air conditioner, and more particularly, by accurately predicting the degree of contamination in a vehicle based on data obtained through analysis of the passenger's information, even if the air pollution conditions inside the vehicle are changed by the passenger, The present invention relates to a vehicle air conditioner capable of effectively ventilating the air in a vehicle while responding quickly and actively.

Recently, vehicle air conditioners have been improved by an automatic control method.

The automatic control system air conditioner detects the temperature, humidity and insolation of the interior and exterior of the vehicle, and automatically adjusts the interior temperature according to the detected data. Therefore, the temperature of the interior of the car is always maintained comfortably.

On the other hand, such an automatic control system air conditioner is provided with a ventilator for automatically ventilating the air in the cabin when the concentration of carbon dioxide (CO ₂ ) in the vehicle interior is contaminated.

As shown in FIG. 1, the ventilator includes a mode sensing means 1 for detecting a “beting mode” of the air conditioning apparatus, and an intake door 2 in accordance with data input from the mode sensing means 1. It has a controller (3) for controlling ().

In particular, the controller 3 counts the " betting mode switching time " when the " betting mode switching signal " When the counted "beting time mode switching time" exceeds the preset "reference time", the intake door 5 is switched to the "outdoor mode position" A during the preset "ventilation time".

Therefore, the fresh air can be introduced into the vehicle interior through the outside air inlet (7). This ventilates the air in the cabin. Here, the "reference time" built into the controller 3 is usually 25 minutes and the "ventilation time" is 5 minutes.

However, such a conventional ventilator has a structure in which the air inside the vehicle is ventilated at a predetermined reference time period, so that the air pollution conditions inside the vehicle are changed and the air in the vehicle is contaminated early. In this case, there is a disadvantage that can not cope with this.

In other words, the air in the cabin differs in the degree of contamination and the contamination time depending on various conditions such as the number of passengers and physical characteristics of the passengers. In particular, in the case of a large number of passengers or a passenger of a large physique, a large amount of carbon dioxide (CO ₂₎ is generated, so that the air in the cabin is contaminated early.

Therefore, the conventional ventilator that ventilates the interior of the vehicle only with a "reference time" has a disadvantage in that it cannot adequately cope with the pollution condition in the interior of the vehicle. There is a problem in that contamination cannot be effectively prevented.

The present invention has been made to solve the above-mentioned conventional problems, the object of the present invention is to provide an air conditioner for a vehicle that can effectively ventilate the air in the vehicle in response to changes in the air pollution conditions in the vehicle interior have.

Another object of the present invention is to provide an air conditioner for a vehicle that can keep the air in a vehicle in a comfortable state at all times by being configured to cope with this even if the air pollution condition in the vehicle is changed.

In order to achieve the above object, the vehicle air conditioner of the present invention, the air-conditioning case having an outdoor air inlet and internal air inlet, an intake door for controlling the opening amount of the internal and external air inlet, and suction the internal and external air An air conditioner for a vehicle comprising a blower blowing into a vehicle, comprising: passenger information analysis means for analyzing information of a passenger in the vehicle; A carbon dioxide accumulation amount calculating unit configured to calculate the amount of carbon dioxide accumulated per unit time in a vehicle by processing the passenger information analyzed by the passenger information analyzing means; And a control unit for controlling the opening amount of the intake door and the rotational speed of the blower according to the carbon dioxide accumulation amount per unit time calculated by the carbon dioxide accumulation amount calculating unit.

Preferably, the control unit controls the intake door so that the opening amount of the outside air inlet gradually increases as the amount of carbon dioxide accumulated per unit time increases, and the rotational speed of the blower gradually increases as the amount of accumulated carbon dioxide per unit time increases. And controlling the blower to be faster.

The passenger information analyzing means captures an interior of a vehicle and detects infrared rays emitted from the human body, and matrix infrared rays image which divides the image of the interior of the vehicle into a matrix of image cells. Sensor); The occupancy ratio, color, and momentum of the image cells in the interior of the vehicle input from the matrix infrared image sensor are detected, and based on the calculated occupancy rate, color, and momentum, Characterized in that it comprises an analysis unit for analyzing the skin temperature and the physique of the passenger and the amount of operation of the passenger.

The analysis unit may calculate that an image cell corresponding to a part far from the matrix infrared image sensor among the image cells in which infrared radiation is sensed has a double occupancy ratio than the image cells of other parts.

According to the vehicle air conditioner according to the present invention, the vehicle based on the "carbon dioxide generation amount" obtained through the passenger information analysis, the "carbon dioxide leakage amount" obtained through the leakage air analysis in the cabin, and the "carbon dioxide accumulation amount" obtained through them Since it is a structure that calculates the indoor pollution level, there is an effect that can accurately predict the pollution level in the vehicle interior.

In addition, since the degree of contamination in the vehicle can be accurately predicted, there is an effect that the air in the vehicle can be effectively ventilated while actively responding to changes in the air pollution conditions in the vehicle.

In addition, since the air in the vehicle can be effectively ventilated in response to the air pollution condition, the air in the vehicle can be always maintained in a comfortable state. This enables a comfortable driving.

1 is a view showing a conventional air conditioner for a vehicle,
2 is a view showing a vehicle air conditioner according to the present invention,
3 is a view showing the interior of the vehicle divided into a matrix form by the matrix infrared image sensor constituting the air conditioning apparatus of the present invention,
Figure 4 is a graph showing the effect of the present invention, showing the change in the opening amount of the open air inlet according to the cumulative amount of carbon dioxide,
5 is a graph showing the effect of the present invention, showing the change in the rotational speed of the blower according to the cumulative amount of carbon dioxide,
6 is a block diagram showing an operation example of the vehicle air conditioner according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a vehicle air conditioner according to the present invention will be described in detail with reference to the accompanying drawings.

First, a vehicle air conditioner according to the present invention will be briefly described with reference to FIG.

The air conditioner for a vehicle is provided with an air conditioning case 10, and the air conditioning case 10 has an outdoor air inlet 12 for introducing external air, an internal air inlet 14 for introducing internal air, and these internal and external air inlet ports. An intake door 20 for selectively opening any one of 12 and 14 is provided.

The intake door 20 rotates to the bet mode position X or to the outside air mode position Y. At this time, at the bet mode position X, the inside airway inlet 14 is opened and the outside air mode position Y is opened. In the open air inlet 12 is opened. Thus, the bet or the outside air can be selectively introduced.

The air conditioner includes a blower 30. The blower 30 inhales outside air or inside air and blows the sucked inside and outside air into the vehicle interior.

Next, the features of the vehicle air conditioner according to the present invention will be described in detail with reference to FIGS. 2 and 3.

First, the air conditioning apparatus of the present invention, based on the data input from the passenger information analysis means 40 and the passenger information analysis means 40 to analyze the information of the passengers in the vehicle interior (CO ₂₎ It includes a carbon dioxide generation amount prediction means 50 that can predict the generation amount.

The passenger information analyzing means 40 analyzes the passenger information through the data input from the matrix infrared ray image sensor 42 and the matrix infrared image sensor 42 for imaging the vehicle interior. The part 44 is provided.

The matrix infrared image sensor 42 is a sensor for detecting infrared rays emitted from the human body, and is provided at the front upper end of the inside of the vehicle.

As shown in FIG. 3, the matrix infrared image sensor 42 captures an interior of a vehicle and then divides the image of the interior of the vehicle into an image cell 42a in a matrix form. .

The analysis unit 44 has a built-in infrared analysis program. When the interior image cells 42a having a matrix form are input from the matrix infrared image sensor 42, among the input image cells 42a in the interior of the vehicle, The occupancy rate of the image cell 42a in which infrared radiation is detected is calculated, and the passenger information is analyzed based on the calculated occupancy rate.

That is, for example, of the image cells 42a in the vehicle interior input from the matrix infrared image sensor 42, the occupancy ratio of the image cells 42a in which infrared radiation is detected is "first reference ratio" or less, for example For example, if less than 20%, it is analyzed that there is only one passenger in the cabin.

When the occupancy ratio of the image cell 42a in which infrared radiation is detected is larger than the "first reference ratio" and smaller than the "second reference ratio" larger than the "first reference ratio", for example, 20 to 40 If it is% range, it analyzes that there are two passengers in the cabin.

When the occupancy ratio of the image cell 42a in which infrared radiation is detected is larger than the "second reference ratio" and smaller than the "third reference ratio" larger than the "second reference ratio", for example, 40 to 60 If it is% range, it analyzes that there are three passengers in the cabin.

When the occupancy ratio of the image cell 42a in which infrared radiation is detected is larger than the "third reference ratio" and smaller than the "fourth reference ratio" larger than the "third reference ratio", for example, 60 to 80 If it is% range, it analyzes that there are four passengers in the cabin.

In addition, the analyzer 44 calculates an individual occupancy rate of the group of image cells 42b that form a cluster among the image cells 42a in which infrared radiation is detected, and then corresponds to the calculated individual occupancy rate. By detecting "personal physique data for each passenger," the physique of the passenger can also be analyzed.

"Personal physique data for each passenger" is embedded in the analysis unit 44, and stored in various ways according to the occupancy ratio of the image cell group 42b.

In addition, the analyzer 44 may also analyze the skin temperature of the passenger by analyzing the color of the image cells 42a in which infrared radiation is detected.

In addition, the analyzer 44 may also analyze an operation amount of the passenger by analyzing the movement of the image cells 42a in which infrared radiation is detected.

On the other hand, the analysis unit 44, the image cell 42a corresponding to the rear seat portion 42c in the interior of the image cell 42a, the infrared radiation is detected, is twice as large as the image cell 42a of the other portion. It is computed as having the occupancy ratio of.

Because the matrix infrared image sensor 42 is installed at the upper front of the inside of the vehicle, the rear seat portion 42c in the interior of the vehicle is imaged at a relatively far distance from the front seat portion 42d, whereby the rear stone portion ( This is because the passenger of 42c) is about 1/2 times smaller than the passenger of the front seat 42d.

Accordingly, by calculating the image cell 42a corresponding to the rear seat portion 42c as having twice as much occupancy as the image cell 42a of the other portion, the rear seat portion 42c and the front seat which are generated due to the perspective The error of the occupation rate between the portions 42d is corrected.

Again, with reference to Figure 3 and Figure 2, the air conditioning apparatus of the present invention, based on the information of the inputted passenger from the passenger information analysis means 40 primary carbon dioxide (CO _2), carbon dioxide generation amount prediction for predicting the amount of room Means 50.

The carbon dioxide generation amount predicting means 50 includes a calculating unit 52. The calculating part 52 calculates the amount of carbon dioxide in a vehicle interior based on the information of the passenger analyzed by the analysis part 44 of the passenger information analysis means 40 as a kind of calculation program.

Looking at this in detail, the calculation unit 52, when various information of the passenger is input in the passenger information analysis means 40, the passenger information through the function of the formula [Equation 1] to [Equation 4] below, Carbon dioxide generation amount (N) according to number (n), metabolic rate compensation index (P) according to passenger body size (p), metabolic rate compensation index (S) according to passenger skin temperature (s), metabolic rate according to passenger operation amount (m) Compensation index (M) and the like are respectively calculated. Then, the calculated data is calculated by [Equation 5] to calculate carbon dioxide generation amount ΔG in the vehicle per unit time.

[Formula 1]

CO2 emissions by number of passengers (N) = f (n)

n: passengers

[Formula 2]

Metabolic Compensation Index (P) = g (p)

p: passenger physique

[Equation 3]

Metabolic rate compensation index according to passenger skin temperature (S) = h (s)

s: passenger skin temperature

[Formula 4]

Metabolic rate compensation index (M) = k (m) according to the amount of passenger operation per unit time

m: passenger movement per unit time

[Formula 5]

Carbon dioxide generation rate per unit time (△ G) = N × P × S × M × △ t

Δt: unit elapsed time

Here, the dependent variable values N, P, S, and M according to the independent variables n, p, s, and m in [Equation 1], [Equation 2], [Equation 3], and [Equation 4] take into consideration passenger information. This data is obtained from several test results. It is preferable that such N, P, S, and M are stored in the analyzer 44.

Referring again to FIG. 2, the air conditioner of the present invention includes a carbon dioxide leak estimating means 60 for predicting the amount of carbon dioxide leaking from the interior of a vehicle.

The carbon dioxide leak amount estimating means 60 calculates a "carbon dioxide leak amount per unit time" through the basic leakage amount calculation unit 70 for calculating the amount of carbon dioxide basically leaked from the vehicle interior and the data input from the basic leakage amount calculation unit 70. It includes a leak amount calculation unit 80 per unit time.

Basic leakage amount calculation unit 70, the outdoor air intake amount detecting means 72 for detecting the amount of outside air introduced through the intake door 20, the vehicle interior pressure detecting means 74 for detecting the pressure in the vehicle interior, and the outside air It is provided with a calculation unit 76 for calculating the basic amount of leakage of carbon dioxide through the data input from the introduction amount detecting means 72 and the vehicle interior pressure detecting means 74.

The outdoor air flow rate detecting unit 72 includes a door detection sensor for detecting a position of the intake door 20, and the door detection sensor configured as described above has the intake door 20 in the air mode position Y or the bet mode position. Detect if (X) Therefore, the amount of outside air introduced through the intake door 20 is indirectly sensed.

The vehicle interior pressure detecting means 74 is composed of a vehicle speed detecting sensor and a blower rotational speed detecting sensor. Each of the sensors configured in this way indirectly detects the pressure of the air supplied into the vehicle interior by detecting the vehicle speed and the rotational speed of the blower. Detect. This indirectly detects the pressure in the vehicle interior.

The calculation unit 76 is a kind of arithmetic program. When the outside air input amount f and the vehicle interior pressure B are respectively inputted from the outside air input quantity detecting means 72 and the interior pressure detecting means 74, the input data is inputted. It calculates the "basic carbon dioxide leakage" (V) which leaks basically from the inside of a vehicle by calculating with [Equation 6] below.

For reference, the cause of air leakage in the cabin is related to the pressure in the cabin, and the pressure in the cabin is related to the amount of air intake through the intake door 20 and the wind speed of the outside air to be introduced. 20) Using the amount of outside air input and the wind speed (vehicle speed and blower rotation speed) of the outside air, the "basic carbon dioxide leakage" (V) in the cabin can be calculated.

[Formula 6]

CO2 Base Leakage (V) = f × B

f: External air intake amount (betting mode: "0", outside mode: "1"), B: interior pressure value

On the other hand, when the calculation unit 76 calculates the "basic carbon dioxide leakage amount" (V) according to the position of the intake door 20 input from the outside air intake detection unit 72, the intake door 20 is outside air In case of the mode position (Y), the outside air input quantity "f" is calculated as-> "1", and when it is switched to the bet mode position (X), the outside air input quantity "f" value is changed to-> "0". Calculate with

In addition, the calculation unit 76 has various built-in "vehicle pressure values" corresponding to the vehicle speed and the blower rotational speed. Accordingly, when the vehicle speed and the blower rotational speed are input by the vehicle interior pressure detecting means 74, the corresponding vehicle interior pressure value is detected, and then the detected interior vehicle pressure value is calculated as the value "B". .

Referring back to FIG. 2, the air conditioner of the present invention includes a leak rate calculation unit for calculating a "carbon dioxide leak amount" (V) input from the basic leak amount calculation unit 70 and a "carbon dioxide leak amount per unit time" through various data. And 80.

Leakage calculation unit 80 per unit time, the window glass outside air volume detection means 82 for detecting the amount of outside air introduced into the window glass, the window glass opening time detection means 84 for detecting the opening time of the window glass, the intake door 20 Intake door outside air flow rate detection means 85 for detecting the amount of outside air introduced into, and the intake door opening time detection means 86 for detecting the open time of the open air inlet 12 of the intake door 20.

The window glass outside air volume detection means 82 is composed of a window glass detection sensor for detecting the position of each window glass, the window glass detection sensor configured in this way, detects the opening position of the window glass. Therefore, the amount of outside air introduced into the cabin through the window glass is indirectly sensed.

The window opening time detecting means 84 is configured with a timer that counts the open time when each window glass is opened, and the timer configured in this way detects the opening time of the window glass.

The intake door outside air flow rate detection means 85 is composed of a door detection sensor for detecting the position of the intake door 20, the door detection sensor configured in this way, the intake door 20 is the outside mode position (Y) or bet Detect whether the mode position (X). Therefore, the amount of outside air introduced through the intake door 20 is indirectly sensed.

The intake door opening time detecting means 86 is configured as a timer for counting the open time when the intake door 20 is opened. The timer configured in this way includes the intake door 20 for the outside air inlet 12. ) Detect the open time.

On the other hand, the leakage amount calculation unit 80 per unit time, the window glass outside air flow rate detection means 82, the window glass opening time detection means 84, the intake door outside air flow rate detection means 85, and the intake door opening time detection means ( A cumulative amount calculating unit 88 for calculating the " carbon dioxide leak amount per unit time " (ΔV) by calculating and processing the respective data inputted from 86 and the " carbon dioxide basic leak amount " V inputted from the basic leakage amount calculating unit 70. ).

The cumulative amount calculating unit 88 is a kind of arithmetic program, and the "basic carbon dioxide leakage amount" (V) is input from the basic leakage amount calculating unit 70, and the window glass external air amount detecting means 82, and the window glass opening time detecting means 84. And the intake door open air dose detection means 85, the intake door open time detection means 86 from the window glass open air dose amount α, the window glass open time, t1, and the intake door open air dose amount (β). ) And " intake door opening time " (t2), the input data is calculated by the following [Equation 7] to calculate the " carbon dioxide leak per unit time " (ΔV).

[Equation 7]

Carbon dioxide leak per unit time (ΔV) = V × Δt + α × Δt1 + β × Δt2

Δt: unit elapsed time, V: basic carbon dioxide leakage

α: window glass external air input, t1: window glass opening time

β: Intake door outside air input, t2: Intake door opening time

Referring again to FIG. 2, the air conditioning apparatus of the present invention includes a carbon dioxide accumulation amount calculating unit 90.

The carbon dioxide accumulation amount calculating unit 90 is a kind of calculation program, in which the carbon dioxide generation amount per unit time (ΔG) is input from the carbon dioxide generation amount prediction unit 50, and the carbon dioxide leakage amount per unit time from the carbon dioxide leakage amount prediction unit 60 ( [Delta] V) is input, the current "CO2 cumulative amount per unit time" (A_old) and the previous "CO2 cumulative amount per unit time" (A_new) in the vehicle is calculated by calculating the following [Equation 8].

[Equation 8]

Cumulative amount of carbon dioxide per unit (A_new) = A_old + △ G-△ V

A_old: Previous "accumulated CO2 per unit time"

ΔG: amount of carbon dioxide generated per unit time, ΔV: amount of carbon dioxide leaked per unit time

On the other hand, the carbon dioxide accumulation amount calculating unit 90 may calculate the current "carbon dioxide accumulation amount per unit time" (A_new) only through the "carbon dioxide generation amount per unit time" (ΔG).

In this case, as shown in [Equation 9] below, by adding the previous "CO2 accumulated per unit time" (A_old) to "CO2 generated per unit time" (ΔG), the current "CO2 accumulated per unit time" (A_new) To calculate.

Equation 9

Cumulative amount of carbon dioxide per unit (A_new) = A_old + △ G

Preferably, it is more precise to calculate the "accumulation amount of carbon dioxide per unit time" (A_new) through [Equation 8].

And the air conditioner of this invention is equipped with the control part 100. FIG.

The control unit 100 is equipped with a microprocessor. When the current "accumulation amount of carbon dioxide per unit time" (A_new) is input from the carbon dioxide accumulation amount calculating unit 90, the intake door according to the input "accumulation amount of carbon dioxide per unit time" (A_new). 20 and the blower 30 are controlled.

In particular, as shown in FIG. 4, the intake door 20 moves toward the outside air mode position Y so that the opening amount of the outside air inlet 12 is gradually increased in proportion to the "accumulated amount of carbon dioxide per unit time" (A_new). To control. Therefore, the larger the cumulative amount of carbon dioxide in the vehicle, the more the amount of introduction of outside air is gradually increased. As a result, the interior of the vehicle is always kept in a comfortable state.

In addition, as shown in FIG. 5, the control unit 100 controls the blower 30 so that the rotational speed of the blower 30 is gradually increased in proportion to the "accumulated amount of carbon dioxide per unit time" (A_new). Therefore, the larger the cumulative amount of carbon dioxide in the vehicle, the more the amount of introduction of outside air is gradually increased. As a result, the interior of the vehicle is always kept in a comfortable state.

On the other hand, the controller 100 has a variety of built-in "intake door control value" for each "accumulated carbon dioxide per unit time". Therefore, when the current "accumulation amount of carbon dioxide per unit time" (A_new) is input from the carbon dioxide accumulation amount calculating unit 90, the "intake door control value" corresponding to the input "accumulation amount" is detected, and according to the detected "control value". The opening amount of the intake door 20 is controlled.

The controller 100 has various built-in "blower control values" for each "accumulated amount of carbon dioxide per unit time". Accordingly, when the current "accumulation amount of carbon dioxide per unit time" (A_new) is input from the carbon dioxide accumulation amount calculating unit 90, the "blower control value" corresponding to the input "accumulation amount" is detected, and according to the detected "control value". The rotational speed of the blower 30 is controlled.

Next, an operation example of the air conditioner having such a configuration will be described with reference to FIGS. 2, 3, and 6.

First, referring to FIGS. 2 and 6, when the air conditioning apparatus is turned on (S101), each of the sensing sensors detects a corresponding object. For example, the outside air intake through the intake door 20, the opening time of the outside air inlet 12, the outside air intake through the window glass, the opening time of the window glass, and the interior pressure (S103).

In the process of operating each of the sensing sensors, the matrix infrared image sensor 42 captures an image in the vehicle interior (S105), and analyzes the infrared rays of the captured image by the analysis unit 44. Analyze the information (S107). For example, the number of passengers, the size of the passengers, the skin temperature of the passengers, the amount of operation of the passengers is analyzed.

When the analysis of the passenger's information is completed, the amount of carbon dioxide generated in the vehicle per unit time is predicted based on this (S109). Prediction at this time is obtained by calculating through the above [Equation 1] to [Equation 5].

On the other hand, in the process of estimating the amount of carbon dioxide generated per unit time, the carbon dioxide leak amount predicting means 60 predicts the "carbon dioxide leak amount per unit time" using the data input from each sensor (S111).

Prediction at this time, first calculate the "carbon dioxide base leak amount" through the above-described [Equation 6] (S113), the calculated "carbon dioxide base leak amount" and the data input from the respective sensors described above [Equation 7] through the operation process to predict the "carbon dioxide leak per unit time" (S115).

When the prediction of the "carbon dioxide generation amount per unit time" and the "carbon dioxide leakage amount per unit time" is completed, the carbon dioxide accumulation amount calculating unit 90 returns the "CO2 generation amount per unit time" and "CO2 leakage amount per unit time" to [Equation 8]. The calculation process finally calculates the current "accumulation amount of carbon dioxide per unit time" in the vehicle interior (S117).

When the "accumulated amount of carbon dioxide per unit time" is calculated, the controller 100 controls the intake door 20 and the blower 30 according to the calculated "accumulated amount of carbon dioxide per unit time" (S119).

In particular, in the case of the intake door 20, the opening degree of the outside air inlet 12 is gradually increased in proportion to the "accumulated amount of carbon dioxide per unit time" (A_new). Therefore, the greater the cumulative amount of carbon dioxide in the vehicle, the more the amount of introduction of outside air is gradually increased (S121). As a result, the interior of the vehicle is always kept in a comfortable state.

In the case of the blower 30, the rotational speed is gradually increased in proportion to the "accumulated amount of carbon dioxide per unit time" (A_new). Therefore, the greater the cumulative amount of carbon dioxide in the vehicle, the more the amount of introduction of outside air is gradually increased (S121). As a result, the interior of the vehicle is always kept in a comfortable state.

As described above, the air conditioning apparatus of the present invention is based on the "carbon dioxide generation amount" obtained through the passenger information analysis, the "carbon dioxide leakage amount" obtained through the leakage air analysis in the cabin, and the "accumulated carbon dioxide amount" obtained through these. Therefore, since the contamination level in the vehicle interior is calculated, the pollution level in the vehicle interior can be accurately predicted.

In addition, since the degree of contamination in the vehicle can be accurately predicted, it is possible to effectively ventilate the air in the vehicle while actively responding to changes in the air pollution conditions in the vehicle.

In addition, since the air in the vehicle can be effectively ventilated in response to the air pollution condition, the air in the vehicle can be always maintained in a comfortable state. This enables a comfortable driving.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

10: air conditioning case 12: outside air inlet
14: Intake Door Entrance 20: Intake Door
30: blower 40: passenger information analysis means
42: Matrix Infrared Rays Image Sensor
42a: Image Cell 44: Analysis
50: carbon dioxide generation amount prediction means 52: calculation unit
60: carbon dioxide leakage prediction means 70: basic leakage calculation unit
72: outside air volume detection means 74: vehicle interior pressure detection means
76: calculation unit 80: leakage amount calculation unit per unit time
82: window glass outside air volume detection means 84: window glass opening time detection means
85: intake door outdoor air flow rate detection means
86: intake door opening time detection means
88: cumulative amount calculation unit 90: carbon dioxide accumulation amount calculation unit
100:

Claims (9)

An air conditioning case 10 having an outside air inlet 12 and an inside air inlet 14, an intake door 20 for controlling the opening amount of the inside and the outside air inlets 12 and 14, and internal and external air. In the vehicle air conditioner comprising a blower 30 for inhaling and blowing into the cabin,
A passenger information analyzing means 40 for analyzing information of a passenger riding in the vehicle interior;
A cumulative amount of carbon dioxide calculating unit 90 that calculates a cumulative amount of carbon dioxide per unit time in a vehicle by processing the passenger information analyzed by the passenger information analyzing means 40;
And a controller 100 for controlling the opening amount of the intake door 20 and the rotational speed of the blower 30 according to the accumulated amount of carbon dioxide per unit time calculated by the carbon dioxide accumulation amount calculating unit 90. 40,
Matrix Infrared Rays Image Sensor 42 which detects infrared rays emitted from the human body by capturing an interior of a vehicle and divides the captured interior image into matrix-shaped image cells 42a. Wow;
Of the image cells 42a in the vehicle interior input from the matrix infrared image sensor 42, the occupancy ratio, color, and the amount of motion of the image cell 42a in which infrared radiation is detected are calculated, and the calculated occupancy rate, color, and the amount of motion are calculated. Vehicle air conditioner, characterized in that it comprises an analysis unit 44 for analyzing the number of passengers and the skin temperature of the passenger and the physique of the passenger and the amount of operation of the passenger based on the. The method of claim 1,
The control unit 100,
As the cumulative amount of carbon dioxide per unit time increases, the intake door 20 is controlled such that the opening degree of the outside air inlet 12 increases gradually.
As the cumulative amount of carbon dioxide per unit time increases, the air blower for controlling the blower (30) so that the rotational speed of the blower (30) gradually increases. delete The method of claim 1,
The analysis unit 44,
The image cell 42a corresponding to the portion farther from the matrix infrared image sensor 42 among the image cells 42a in which infrared radiation is detected is twice as occupied as the image cells 42a in other portions. Vehicle air conditioner, characterized in that for calculating. An air conditioning case 10 having an outside air inlet 12 and an inside air inlet 14, an intake door 20 for controlling the opening amount of the inside and the outside air inlets 12 and 14, and internal and external air. In the vehicle air conditioner comprising a blower 30 for inhaling and blowing into the cabin,
A passenger information analyzing means 40 for analyzing information of a passenger riding in the vehicle interior;
A cumulative amount of carbon dioxide calculating unit 90 that calculates a cumulative amount of carbon dioxide per unit time in a vehicle by processing the passenger information analyzed by the passenger information analyzing means 40;
A control unit 100 for controlling the opening amount of the intake door 20 and the rotational speed of the blower 30 according to the accumulated amount of carbon dioxide per unit time calculated by the carbon dioxide accumulation amount calculating unit 90;
Carbon dioxide generation amount predicting means (50) for predicting the amount of carbon dioxide generated per unit time in a vehicle on the basis of passenger information input from the passenger information analyzing means (40);
Carbon dioxide leak amount prediction means (60) for predicting carbon dioxide leak amount per unit time naturally leaking from the vehicle interior;
The carbon dioxide accumulation amount calculating unit 90 calculates the carbon dioxide generation amount per unit time input from the carbon dioxide generation amount prediction unit 50 and the carbon dioxide leakage amount per unit time input from the carbon dioxide leakage amount predicting unit 60 by the following formula. Vehicle air conditioner, characterized in that for calculating the cumulative amount of carbon dioxide per hour.
[expression]
Cumulative amount of carbon dioxide per unit (A_new) = A_old + △ G-△ V
A_old: Previous "accumulated carbon dioxide per unit time".
ΔG: amount of carbon dioxide generated per unit time, ΔV: amount of carbon dioxide leaked per unit time. 6. The method of claim 5,
The carbon dioxide generation amount prediction means 50 includes a calculation unit 52,
The calculation unit 52,
Calculate the amount of carbon dioxide generated (N) according to the number of passengers through the formula [1] below the number of passengers (n) input from the passenger information analysis means 40,
Calculate the metabolic rate compensation index (P) according to the passenger physique through the passenger physique (p) input from the passenger information analysis means 40, below [Equation 2],
Calculate the metabolic rate compensation index (S) according to the passenger skin temperature through the passenger skin temperature (s) input from the passenger information analysis means 40 below [Equation 3],
Calculate the metabolic amount compensation index (M) according to the passenger operation amount through the passenger operation amount (m) input from the passenger information analysis means 40 below [Equation 4],
Calculated carbon dioxide generation amount (N) according to the number of passengers (n), metabolic rate compensation index (P) according to the passenger physique (p), metabolic rate compensation index (S) according to the passenger skin temperature (s), passenger operation Computing the metabolic rate compensation index (M) according to the amount (m) by [Equation 5] to calculate the amount of carbon dioxide generation (△ G) in the vehicle per unit time characterized in that the vehicle air conditioner.
[Formula 1]
CO2 emissions by number of passengers (N) = f (n)
n: passengers
[Formula 2]
Metabolic Compensation Index (P) = g (p)
p: passenger physique
[Formula 3]
Metabolic rate compensation index according to passenger skin temperature (S) = h (s)
s: passenger skin temperature
[Formula 4]
Metabolic rate compensation index (M) = k (m) according to the amount of passenger operation per unit time
m: passenger movement per unit time
[Formula 5]
Carbon dioxide generation rate per unit time (△ G) = N × P × S × M × △ t
Δt: unit elapsed time 6. The method of claim 5,
The carbon dioxide leak amount prediction means 60,
A basic leakage calculation unit 70 for calculating a basic carbon dioxide leakage amount leaking basically from the vehicle interior;
Vehicle air conditioner, characterized in that it comprises a leak amount calculation unit (80) for calculating the amount of carbon dioxide leak per unit time through the data input from the basic leakage amount calculation unit (70). 8. The method of claim 7,
The basic leakage calculation unit 70,
Outside air volume detection means 72 for detecting the amount of outside air introduced through the intake door 20, interior vehicle pressure detection means 74 for detecting the pressure in the vehicle interior, and outside air volume detection means 72 And a calculation unit 76 for calculating a basic amount of carbon dioxide leakage through the amount of outside air input from the vehicle interior pressure detecting means 74 and the vehicle interior pressure,
The calculation unit 76 calculates the outside air intake amount f and the in-vehicle pressure B inputted from the outside air intake detection unit 72 and the inside pressure detection means 74 by the following formula, and the carbon dioxide Vehicle air conditioner, characterized in that for calculating the basic leakage (V).
[expression]
CO2 Base Leakage (V) = f × B
f: External air intake amount (betting mode: "0", outside mode: "1"), B: interior pressure value 9. The method according to claim 7 or 8,
The leakage amount calculation unit 80 per unit time,
The window glass outside air volume detection means 82 for detecting the amount of outside air introduced into the window glass, the window glass opening time detecting means 84 for detecting the opening time of the window glass, and the outside air amount introduced into the intake door 20. An intake door open-air intake detection means 85 and an intake door open-time detection means 86 for detecting an open time of the open-air inlet 12 of the intake door 20;
The window glass outside air dose detecting means 82, the window glass opening time detecting means 84, the intake door outside air filling amount detecting means 85, the intake door opening time detecting means 86, and the window glass outside air filling amount α, The amount of carbon dioxide leak per unit time (Δ) through the window glass opening time t1, the intake door outside air intake amount β, the intake door opening time t2, and the basic carbon dioxide leakage amount V input from the basic leakage calculation unit 70. A cumulative amount calculating unit 88 for calculating V),
The cumulative amount calculating unit 88 measures the window glass outside air inflow amount α, the window glass opening time t1, the intake door air inflow amount β, the intake door opening time t2, and the basic carbon dioxide leakage amount V. Vehicle air conditioner, characterized in that to calculate the amount of carbon dioxide leak per unit time (△ V) by calculating by the following formula.
[expression]
Carbon dioxide leak per unit time (ΔV) = V × Δt + α × Δt1 + β × Δt2
Δt: unit elapsed time, V: basic carbon dioxide leakage
α: window glass external air input, t1: window glass opening time
β: Intake door outside air input, t2: Intake door opening time

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