JPH05208610A - Vehicle air quantity control device - Google Patents

Abstract

PURPOSE:To execute changes to the ventilating characteristic preferable to the passenger over the arbitrary range of the information on the target blow-out temperature by achieving the learning control of the change to the ventilating characteristic when the passenger changes the air quantity during the ventilating operation on the basis of the predetermined ventilating characteristic. CONSTITUTION:The signals of inner and outer atmospheric temperature sensors 33, 34, a solar radiation sensor 35, and a temperature setting switch 36 are received by a microcomputer 31 together with the signal of an operation part 37 through a level conversion circuit 32, reading the environmental conditions. This microcomputer 31 stores the value to learn the preference of the passenger to the built-in standby RAM, the changed set value is learned when the passenger manually changed the setting of the air quantity which is blown out in the automatic mode, and a blower motor 24 is controlled by outputting the changed set value to a driving circuit 30 so as to be reflected in the ventilating characteristic. Thus, the air quantity can be changed over the arbitrary range of the target blow-out temperature information, enabling the comfortable feeling of the passenger in the arbitrary air-conditioned condition of the vehicle chamber.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air volume control device, and more particularly to a device for learning control of a manual control mode with respect to an automatic control mode.

[0002]

2. Description of the Related Art Conventionally, in Japanese Patent Laid-Open No. 3-54015, when an occupant manually changes the air flow rate of a blower to a maximum air flow rate while air is being blown into a vehicle compartment with a preset air flow rate characteristic, Alternatively, there is disclosed a device that, when the maximum air volume is changed to a lower air volume, the changed air volume is learned and controlled to change the maximum air volume switching point in a preset air volume characteristic.

[0003]

However, in the above-mentioned conventional example,
In the characteristic diagram showing the air flow rate with respect to the target air temperature in the passenger compartment, the point at which the air flow rate is switched to the maximum air flow rate or the point at which the maximum air flow rate is released is only changed based on the manual setting data of the air flow rate manual setting means. It does not change anything else.

Therefore, according to the present invention, when the air volume is manually changed by an occupant while the air is being blown based on the preset blowing characteristic, the target blowing temperature of the vehicle interior shown in the horizontal axis in the blowing characteristic is set. An object of the present invention is to provide a vehicle air flow rate control device capable of changing the air flow rate shown on the vertical axis of the air blow characteristic over an arbitrary range.

[0005]

In order to achieve the above object, the present invention provides a blower for blowing air into a passenger compartment, an environmental condition detecting means for detecting an environmental condition affecting an air conditioning condition in the passenger compartment, and the environment. Target outlet temperature information calculating means for calculating target outlet temperature information of air blown into the vehicle compartment based on the detection signal of the condition detecting means, target outlet temperature information calculated by the target outlet temperature information calculating means, and blower voltage of the blower. And a blower characteristic of the blower based on the blower characteristic stored in the blower characteristic storage means. Air flow rate determining means for determining the air volume, air flow rate manual setting means for manually setting the air flow rate of the blower, and output signals of the air flow rate determining means and the air flow rate manual setting means In a vehicle air volume control device including a drive unit that controls the drive of the blower based on the following, when the air volume is changed by the air volume manual setting unit within a region between the predetermined points of the air blowing characteristics: The gist is a vehicle air volume control device including a blower characteristic changing unit that changes the blower voltage at the points located at both ends of the region.

[0006]

According to the present invention, among the air blowing characteristics stored in the air blowing characteristic storage means, when the air blowing amount is changed manually by the occupant within the area between the predetermined points of the target blown air temperature information, the area is set. The blowing characteristics can be easily changed by changing the blower voltage at the points located at both ends of the. Further, by setting the predetermined point over an arbitrary range of the target blowout temperature information, it is possible to change the air blowing characteristic to a characteristic that suits the occupant's taste over the arbitrary range of the target blowout temperature information.

According to the second aspect of the present invention, since the learning is performed after a predetermined time has elapsed after the manual setting, learning when the occupant is manually setting, learning of malfunction of the occupant, etc. are prevented. You can

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 2 shows a specific configuration of an embodiment of a vehicle air volume control device of the present invention. An inside / outside air switching damper 22a is installed on the most upstream side of the air conditioning unit 20. The inside / outside air switching damper 22a is arranged at a portion where the outside air introduction port and the inside air introduction port are separated, and selects the ratio of the inside air to the outside air of the air introduced into the air conditioning unit 20 by an actuator (not shown).

A blower motor 24 and a fan 23 fixed to the blower motor 24 sucks air into the air conditioning unit 20 and blows it to the downstream side of the unit 20, and an evaporator 25 and a heater core 26 are provided downstream of the fan 23. ing.

The evaporator 25 is combined with a compressor or the like (not shown) to form a cooling cycle, and cools the passing air. The heater core 26 circulates engine cooling water (not shown) inside and heats air passing therethrough.

An air mix damper 22b is provided on the upstream side of the heater core 26, and the air mix damper 2 is provided.
The opening degree of 2b is adjusted by an actuator (not shown), whereby the ratio of the air passing through the heater core 26 and the air bypassing the heater core 26 is adjusted, and the temperature of the air blown into the most downstream passenger compartment is controlled.

A defroster (DEF) blowout damper 22c, a face (FACE) blowout damper 22d, and a foot (FOOT) blowout damper 22e are provided at the most downstream side of the air conditioning unit 20. Then, the temperature-controlled air is blown out in each blowing mode by operating each of these dampers by an actuator (not shown).

The air flow rate is controlled by the drive circuit 30 which drives the blower motor 24 based on the output signal from the microcomputer 31. The microcomputer 31 includes a central processing unit (CPU), ROM, RA (not shown).
It has an M, a standby RAM, an I / O port, an A / D conversion function, and the like, and is known per se.

The standby RAM is an RA for storing (backing up) a value in which an occupant's preference is learned even when the ignition switch (hereinafter referred to as IG.) Is turned off.
M, and IG. From the battery even when is off
G. Power is supplied directly without going through. Further, it is composed of a backup power supply (not shown) so that the microcomputer 31 is supplied with power for a short time even when the power is removed from the battery.

The microcomputer 31 includes an operating section 37.
The output signal from is input. The operation unit 37 includes an AUTO switch for setting an automatic control state (not shown), a manual inside / outside air changeover switch, and a manual outlet mode changeover switch (D
EF, FACE, FOOT, bi-level (B / L), foot differential (F / D)), and manual air flow rate changeover switch.

Further, in the microcomputer 31, the environmental conditions affecting the air conditioning in the vehicle are measured by the inside air temperature sensor 33,
Input from the outside air temperature sensor 34 and the solar radiation sensor 35 via the respective level conversion circuits 32, and these are A / D converted by the microcomputer 31 to read environmental conditions. Further, the temperature preferred by the occupant is input from the temperature setting switch 36, level-converted by the level conversion circuit 32, and input to the microcomputer 31.

Next, details of the operation unit 37 will be described with reference to FIG. As shown in FIG. 6, the operation unit 37 is composed of four switches, a low switch 371, a down switch 372, an up switch 373, and a high switch 374. Of these, the low switch 371 pushes the blower voltage to 4 volts (minimum voltage).
It is configured to output a control signal. Further, the high switch 374 is configured to output a signal for controlling the blower voltage to 12 volts (maximum voltage) when pressed.

The down switch 372 outputs a signal for lowering the blower voltage by one level (= 0.25 volt) when it is pressed for less than 0.5 seconds, and 0.5
Blower voltage is 0.1 when pressed for more than 2 seconds.
It is configured to output a signal that decreases by one level every second.

The up switch 373 outputs a signal that raises the blower voltage by one level (= 0.25 volt) by being pressed for less than 0.5 seconds, and 0.5
Blower voltage is 0.1 when pressed for more than 2 seconds.
It is configured to output a signal that increases by one level every second.

Next, basic control by the microcomputer 31 will be described with reference to FIG. The microcomputer 31 uses the IG. When the switch is turned on, control is started in step 100, and the process proceeds to step 110 to set various conversions and initial values such as flags.

In the next step 150, the inside air temperature sensor 3
3, environmental conditions are input by sensor signals from the outside air temperature sensor 34 and the solar radiation sensor 35, and the temperature setting switch 3
The state of the operation switch is input from 6 and the operation unit 37. Further, in step 150, processing for the input from the operation unit 37 is also performed (described later with reference to FIG. 7).

In the next step 200, the target outlet temperature (TAO) of the air blown into the vehicle compartment is calculated according to the following equation 1 based on the environmental conditions input in step 150.

[0023]

## EQU1 ## TAO = K _SET × T _SET −K _R × T _R −K _AM × T _AM −K _S × T _S + C where K _SET , K _R , K _AM , and K _S are coefficients, and C is a constant. , T _SET is the set temperature, T _R is the inside air temperature, T _AM is the outside air temperature, and T _S is the amount of solar radiation.

Next, in step 300, the opening of the air mix damper 22b is calculated with respect to TAO, and an actuator (not shown) is driven by the drive circuit 30 so that this opening is obtained.
To control the temperature of the air blown into the vehicle compartment from the air outlet.

Next, in step 400, the amount of air blown is calculated, the fan 23 connected to the blower motor 24 is rotated through the drive circuit 30, and the amount of air blown into the passenger compartment is controlled. However, it is difficult to uniformly determine the air volume desired by the occupants due to individual differences. In view of this, in one embodiment, the amount of air blown by the occupant is learned during manual operation by the occupant so that the air blow characteristic reflects the preference of the occupant. This will be described in detail later.

Next, in step 500, the introduction ratio of the inside / outside air by the inside / outside air switching damper 22a is calculated, and the actuator (not shown) is controlled via the drive circuit 30. Next, in step 600, the state of the mode is calculated, and the DE
An actuator (not shown) that drives the F blowout damper 22c, the FACE blowout damper 22d, and the FOOT blowout damper 22e is controlled via the drive circuit 30.

Next, in step 700, a compressor (not shown) is controlled. After the processing of step 700,
Returning to step 150, the various signals are read again, and thereby TAO is calculated in step 200.
Depending on O and the state of the switch read in step 150, steps 300, 400, 500, 600, 7
00, the air conditioning control is repeated.

Next, in step 150, the operation unit 3
The process for the input 7 will be described with reference to FIG.
First, the control when the up switch 373 of the operation unit 37 is pressed will be described.

In step 800, the up switch 373
It is determined whether or not is pressed. Up switch 37
If 3 is pressed, YES is determined and step 801 is performed.
Proceed to. Immediately before the up switch 373 is pressed, the flag (UPF) indicating that the up switch 373 has been pressed is set to an initial value or 0 in the processing of step 806.
Therefore, NO is determined in step 801.

In the next step 802, the flag UPF is set to 1 and the counter CNT2 indicating the elapsed time after the up switch 373 is pressed is cleared.
Further, the blower voltage V _F when the up switch 373 is pressed is stored as V _F1 . The counter CNT2 is a counter that is constantly incremented every 0.1 seconds by a timer interrupt (not shown).

In the next step 803, CNT2 is compared with a preset value N1 (= 4). Immediately after the up switch 373 is pressed, CNT2 <N1 is established, so that it is determined to be NO in step 803. Then, in step 804, the voltage obtained by adding 0.25 volt to the blower voltage V _F1 when the up switch 373 is pressed is set to V _M. The V _M determined here is replaced with V _F in step 410 of FIG. 4 described later, and the V _F is output in the next step 411.

Since the counter CNT2 is incremented every 0.1 seconds, the up switch 373 is set to 0.4.
If it is kept pressed for more than a second, CNT2 = 4, and step 8
It is determined to be YES in 03. YES in step 803
If it is determined that the blower voltage V _F1 when the up switch 373 is pressed is 0.25 in the next step 805.
The value obtained by adding the value of × (CNT2-N1 + 1) is obtained as V _M. However, the value of V _M is up to 12 volts.

In other words, if the up switch 373 is pressed for less than 0.5 seconds, V _M is required to be increased by 0.25 volt (1 level) with respect to V _F1 , and 0.5 V is obtained. When the up switch 373 is pressed for a time longer than a second, V _M is 0.2 every 0.1 second with respect to V _F1 .
You are asked to increase by 5 volts (1 level).

Next, when the up switch 373 is turned off,
It is determined to be NO in step 800. Then, in the next step 806, the flag UPF is reset and in step 8
Go to 10. Therefore, when the up switch 373 is turned on again next, the process proceeds to step 800, step 801, step 802, step 803, step 804, and step 810, and the plier voltage is increased by 0.25 volt (1 level). And further up switch 3
The step 73, the step 801, the step 803, the step 804, and the step 810 are performed by keeping pressing 73 (less than 0.4 seconds). When the up switch 373 continues to be pressed (0.4 seconds or more), the process proceeds to step 800, step 801, step 803, step 805, and step 810. After 0.5 seconds, 0 every 0.1 seconds. The blower voltage increases by 0.25V (1 level).

The control from step 810 to step 816 is control when the down switch 372 of the operation unit 37 is pressed. When the down switch 372 is pressed, the same control as when the up switch 373 is pressed is performed, and therefore the description of the control when the down switch 372 is pressed is omitted. DOWNF in FIG. 7 is a flag indicating that the down switch 372 is pressed.

Next, the high switch 37 of the operation unit 37
The control when 4 is pressed will be described. Step 8
At 20, it is determined whether or not the high switch 374 is pressed. If the high switch 374 is pressed, YES is determined and the process proceeds to step 821.

At step 821, V _{M is set} to the maximum level of 1
Set to 2 volts. In step 821, the voltage increased by 1 volt (4 levels) with respect to the blower voltage V _F1 immediately before the high switch 374 is pressed is stored as V _M1 . That is, when learning the blower voltage characteristic in step 405 of FIG. 4 described later, the value of V _M1 is learned. In step 821, the flag HIF indicating that the high switch 374 has been pressed is set.

Next, when the high switch 374 is turned off, NO is determined in step 820, and the flag HIF is reset in step 822. The control of steps 830 to 832 is control when the low switch 371 of the operation unit 37 is pressed. Low switch 3
When 71 is pressed, the same control as when the high switch 374 is pressed is performed, so the description of the control when the low switch 371 is pressed is omitted. In addition, L in FIG.
OF is a flag indicating that the low switch 371 has been pressed.

By the way, if none of the four switches of the operation section 37 is pressed, step 8
00, step 806, step 810, step 81
6, step 820, step 822, step 83
0, and the processing proceeds to step 832. At this time, since all the flags are reset, step 4 in FIG.
It is determined to be NO in 01. If any one of the above four switches is pressed, the flag of the pressed switch is set, and therefore YES is determined in step 401 in FIG.

Next, a method of learning the blowing characteristics will be described in detail with reference to FIGS. 4, 5 (a) and 5 (b).
Details of the blower voltage control step 400 (FIG. 3) are shown in FIG.

In step 401 following step 400, it is determined whether or not the air flow rate has been manually set (changed) by the operation unit 37. N if there is no manual setting here
When it is determined to be O, the process proceeds to step 402. Since the initial value of F1 is set to 0 in step 110, it is determined as NO in step 402 and the process proceeds to step 406.

When the air flow rate is automatic control, F2 = 0,
When NO is determined in step 406, the process proceeds to step 407, and the blower voltage V _F is determined according to the blower voltage characteristic with respect to the target outlet temperature TAO shown in FIG. The blower voltage characteristic is indicative of the blower voltage V _F for the most common human TAO, this property is stored in the ROM.

This characteristic is common in the automatic control of the air flow rate, and TAO becomes lower along the left direction of the horizontal axis.
When TAO ≦ T1, the maximum cooling state is reached and the blower voltage is V _H
Becomes This state means that the inside air temperature is considerably higher than the set temperature and is in the rapid cooling state.

The blower voltage V _F gradually decreases until TAO gradually rises above T1 and the inside air temperature reaches T3 where the temperature approaches the set temperature. When T3 ≦ TAO <T5 in which the inside air temperature is close to the set temperature, the blower voltage V _F becomes V _L which is L _O. When TAO gradually becomes higher than T5, the blower voltage V _F gradually increases.

When TAO ≧ T7, V _F = V _H. This state means that the inside air temperature is considerably lower than the set temperature and is in the maximum heating state. The blower voltage characteristic of this TAO is that TAO is divided into eight by T1 to T7 in the figure,
For example, seven points (T1, V1), (T2, V2), which are plotted such as the blower voltage V1 with respect to T1,
(T3, V3), (T4, V4), (T5, V5),
It is configured as a line connecting (T6, V6) and (T7, V7), and these seven points are stored in the ROM in advance.

In step 407 of FIG. 4, when the battery is connected and the air volume is not manually set after the power of + B is supplied to the microcomputer 31, the most general (personal preference is shown in FIG. 5A). The blower voltage V _F based on the TAO obtained in step 200 (FIG. 3) is calculated according to the unlearned blower voltage characteristic.

In step 411, the blower voltage V _F calculated in step 407 is applied to the blower motor 24 via the drive circuit 30. After that, the process proceeds to step 412, exits the subroutine of step 400, and returns to step 5 of FIG.
Go to 00.

Next, when the air flow rate is manually set (changed) by the operation unit 37, it is determined Yes in step 401, and the process proceeds to step 408. In step 408, the learning request flag F1 and the flag F2 indicating the manual setting state of the air volume.
And are set, and the counter CNT1 for indicating the time after the manual setting is cleared. CNT1 is constantly incremented by a timer interrupt (not shown) every predetermined time, for example, every 0.1 seconds.

At step 409, the value of TAO at that time is stored as CTAO, and then the routine proceeds to step 406. In step 406, since F2 = 1 is set in step 408, it is determined as Yes and step 41
Proceed to 0 and change the blower voltage V _F to the manually set blower voltage V _M. Thereafter, the process proceeds to step 411, the applied voltage of the blower motor 24 is controlled so that the manually set blower voltage V _M is reached, the subroutine is exited, and the process proceeds to step 500 of FIG.

If the occupant is manually setting the air volume when the subroutine 400 is called next, steps 401, 408, 409, 406, 410 and 41 are executed as described above.
The control is performed in the order of 1 and 412, the subroutine is exited, and the applied voltage of the blower motor 24 is controlled so as to be the manually set blower voltage. However, when the manual setting is completed, it is determined No in step 401 and the process proceeds to step 402.

In step 402, since F1 = 1 is set in step 408 as described above, it is determined to be Yes and the process proceeds to step 403. Since CNT1 is cleared to 0 in step 408 and is constantly incremented every 0.1 seconds as described above, CNT1 <C1 (C1 is a constant, here C1 =
Since it is 50), No is determined and step 406
Proceed to. In step 406, since the manual setting flag F2 = 1 is set in step 408, it is determined to be Yes. After that, the control is performed in the order of steps 410, 411, and 412 to exit the subroutine and become the manually set blower voltage. The voltage applied to the blower motor 24 is controlled. Within 5 seconds after completion of manual setting, step 40 described above
0,401,402,403,406,410,41
Controls 1 and 412 are repeatedly executed.

Then, after the manual setting is completed, 5 (= 0.1 ×
When 50) seconds or more have elapsed, CNT1 ≧ C1 (= 50) is satisfied and it is determined Yes in step 403, and step 404
Then, the learning request flag F1 is reset and step 40
The blower voltage characteristic is changed (learned) in step 5 according to the manual setting state. This changing method will be set in detail later. Next, control is performed in the order of steps 406, 410, 411 and 412, and then the subroutine is exited.

As described above, when the occupant manually sets the amount of air blow to his or her own preference, the blower voltage characteristic during the auto is reflected after the lapse of a predetermined time (5 seconds in this case) after completion of the manual setting. Change to characteristics.

After that, when the occupant operates the AUTO switch of the operation unit 37, the manual setting flag F2 is reset in step 150 (FIG. 3), and the blower voltage is automatically controlled to control the blower voltage. That is, No is determined in step 406, and the blower voltage V _F is calculated from the learned blower voltage characteristic in step 407, and the applied voltage of the blower motor 24 is controlled so that the blower voltage becomes the V _F.

Therefore, each time the occupant changes the air flow rate in accordance with his / her own preference, the preference is learned in step 405, and during the automatic operation, the blower voltage V _F is calculated from the blower voltage characteristic after learning and incorporating the preference. Then, the applied voltage of the blower motor 24 is controlled so that the blower voltage becomes the V _F.

Here, the reason why the learning is performed in step 405 only when a predetermined time has elapsed after the manual setting of the blown air amount is that the occupant learns when the manual setting is made, or when the erroneous manual setting is made by mistake. This is to avoid learning and learning when the occupant likes the fluctuation of the air flow rate for a short time.

Next, the learning method in step 405 will be described in detail with reference to FIGS. 5 (a) and 5 (b). As described above, the most general blower voltage characteristic is shown by the solid line in FIG. 5A and the broken line in FIG. 5B, and the seven points (T1, V1), (T2,
V2), (T3, V3), (T4, V4), (T5, V
5), (T6, V6) and (T7, V7) are stored in the ROM. Here, TAO is divided into eight by T1 to T7, but TAO immediately after the manual setting is completed is step 4
Since it is stored as CTAO in 09, this CT
When the value of AO is CTAO ≦ T1, T1 <CTAO <T
The case of 7 and the case of CTAO ≧ T7 will be described.

When CTAO≤T1, for example, when CTAO is point A in FIG. 5B, the blower voltage is automatically set to V1.
Where the occupant manually controls the blower voltage V
_If set to _A , blower voltage V after manual setting
1 is learned and changed to V1N according to Equation 2 below.

[0059]

[Number 2] _{V1N = V1 + α (V A} -V1) is where alpha is a constant, for example, alpha = 0.3 and the uptake of about 30% the passenger's preference in one changed as shown, little by little occupant Change to the blower voltage characteristic that reflects your preference.

When T1 <CTAO <T7, for example, C
When TAO is T4 ≦ CTAO <T5 and is point B in FIG. 5B, the occupant manually sets the blower voltage V _B while the blower voltage is automatically controlled to V4 (= V5). When set to, V4 and V5 are learned and changed to V4N and V5N according to the following formulas 3 and 4.

[0061]

[Equation 3]

[0062]

[Equation 4] That is, the section between C1 and T7 is searched for, and CTAO at that time is T _n ≤CTAO <T
When it is n + 1 (n = 1 to 6), two blower voltages Vn and Vn + 1 corresponding to the section are learned according to the following formulas 5 and 6.

[0063]

[Equation 5]

[0064]

[Equation 6] When CTAO ≧ T7, for example, when CTAO is point C in FIG. 5B, when the blower voltage is automatically controlled to V1 and the occupant is manually set to the blower voltage V _C , The blower voltage V7 after the manual setting is learned and changed to V7N according to the following expression 7.

[0065]

[Equation 7] _{V7N = V7 + α (V C} -V7) as explained above, each time the occupant to manually set the blower voltage to suit your preference, learning takes in the blower voltage after the set. That is, the contents learned in the standby RAM V1N, V2N, V3N, V4N, V5N, V6
N and V7N are fetched, and those values are updated to values reflecting the occupant's preference and stored. By repeating this cycle, the updated blower voltage characteristic matches the occupant's individuality.

Although one embodiment of the present invention has been described above, in the above-described one embodiment, when the occupant manually changes the setting of the blown air volume (based on the blowing characteristics), this setting change value is set. Since the above is learned and reflected in the air blowing characteristic, the occupant has an effect of feeling comfortable by blowing out a wind of an air volume suitable for his / her preference.

Further, in one embodiment, since the occupant learns the air volume manually set and changed, the blast characteristic becomes one that suits his / her preference, and as a result, the number of times the occupant manually operates the air volume is determined. It has the effect that it can be reduced.

Further, in one embodiment, an up switch 373 and a down switch 372 are provided as the operating section 37,
Since the air volume can be set finely by operating these, the occupant can set the air volume extremely close to the air volume he / she wants to set. This also allows
Since the blowing characteristic is learned and changed so that the blowing rate is extremely close to the desired blowing rate, the blowing characteristic can be truly matched to one's own taste.

In one embodiment, the blower voltage is set to the minimum voltage (4 volts) or the maximum voltage (12 volts) by pressing the low switch 371 or the high switch 374 of the operating section 37. As a value to be learned, a voltage that is 1 volt higher than the lowest voltage or a voltage 1 volt lower than the highest voltage is learned. That is, it is conceivable that the occupant may press these switches in order to listen to a radio or a person's talk as a case of pressing the low switch 371 or the high switch 374, and the operation of the switches for such a reason is not learned.
However, the above problem can be solved by learning a voltage 1 volt higher than the minimum voltage or a voltage 1 volt lower than the maximum voltage, as in one embodiment.

It should be noted that, in the above-described embodiment, the learned contents are IG. Although the standby RAM is used for storing even when the memory is off, a non-volatile memory may be used without using the standby RAM. Also in this case, IG. When it is off, the learned contents are saved even if the power supply from the battery is stopped.

In the above embodiment, the target outlet temperature is set to 7
Although it is divided into eight at one point, it may be divided into more fine divisions (for example, 200 divisions) or coarse divisions (for example, four divisions).

Further, in the above embodiment, the TAO is divided in the entire temperature range and the blower voltage characteristic is changed by learning in all the blower voltages corresponding to the respective TAO. However, the learning is performed only in a part of the temperature range. May be.

Also, in the above-mentioned one embodiment, CTAO is Tn.
When ≦ CTAO <Tn + 1, only VnN and Vn + 1N are learned and the value is updated, but Vn−1N and Vn + 2, or a wider value may be updated and learned.

In the above embodiment, the low switch 37 is used.
When 1 or the high switch 374 is pressed, 4 volts is 4 volts higher by 1 volt, or 1 higher than 12 volts.
As I learned a voltage lower than a volt, I added and subtracted a voltage of 1 volt, but it is not limited to this.
You may add or subtract the value of about 20% of the difference with the blower voltage which the passenger actually changed the setting.

In the above embodiment, the blower voltage is increased or decreased by 0.25 V for 0.5 seconds by continuing to operate the up switch 373 or the down switch 372 of the operation unit 37 for a time of less than 0.5 seconds. By continuing the operation for the above time, 0.25 volts was raised and lowered every 0.1 seconds.
Numerical values such as seconds and 0.25 volts may be arbitrarily selected. Further, as shown in FIG. 9, the up / down speed may be changed depending on the time when the switches 372 and 373 are pressed.

[0076]

As described above, according to the present invention, since the blowing characteristic can be changed over an arbitrary range of the target blown air temperature information, the occupant can enjoy a comfortable feeling in an arbitrary vehicle interior air-conditioning state. it can.

[Brief description of drawings]

FIG. 1 is a diagram corresponding to a claim of the present invention.

FIG. 2 is an overall configuration diagram of an embodiment of the present invention.

FIG. 3 is a flowchart showing the air conditioning control of the microcomputer of the one embodiment.

FIG. 4 is a flowchart showing detailed control of step 400 of FIG.

FIG. 5A is a characteristic diagram showing a blowing characteristic stored in the microcomputer, and FIG. 5B is a characteristic diagram showing a blowing characteristic after learning control.

FIG. 6 is a plan view of an operation unit according to the above embodiment.

7 is a flowchart showing detailed control of step 150 in FIG.

8 is a flowchart showing detailed control of step 150 in FIG.

FIG. 9 is a graph showing a blower voltage change speed with respect to an operation time of an up switch and a down switch of an operation unit in another embodiment.

[Explanation of symbols]

 23 Fan as blower 24 Blower motor as blower 30 Drive circuit as driving means 33 Inner air temperature sensor as environmental condition detecting means 34 Outside air temperature sensor as environmental condition detecting means 35 Solar radiation sensor as environmental condition detecting means 36 Environmental condition detection Temperature setting switch as means 37 Operation portion as manual air flow rate setting means Step 200 Target blowout temperature information calculation means Step 405 Air flow characteristic changing means Step 407 Air flow characteristic storage means and air flow rate determination means T1 to T7 points

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takamasa Kawai 1-1, Showa-cho, Kariya city, Aichi Prefecture Nihondenso Co., Ltd.

Claims (2)

[Claims] 1. A blower for blowing air into a vehicle compartment, an environmental condition detecting means for detecting an environmental condition affecting an air conditioning state in the vehicle interior, and an air blown into the vehicle interior based on a detection signal of the environmental condition detecting means. Target blown air temperature information calculation means for calculating the target blown air temperature information, and the blowing characteristic which is the relative relationship between the target blown air temperature information calculated by the target blown air temperature information calculation means and the blower voltage of the blower is the target blown air temperature information. Of air blow characteristic storage means stored at a plurality of points, and air blow rate determination means for determining the air blow rate of the blower based on the air blow characteristic stored in the air blow characteristic storage means, and the air blow rate of the blower. And a blower amount manual setting means for manually setting the blower amount, and a drive means for controlling the drive of the blower based on the output signals of the blower amount determination means and the blower amount manual setting means. In a vehicle air flow control device comprising, when the air flow rate is changed by the air flow rate manual setting means within a region between the predetermined points of the air flow characteristics, the blower at the points located at both ends of the region. An air volume control device for a vehicle, comprising: an air blowing characteristic changing means for changing a voltage. 2. The target blown air temperature information is divided into a plurality of sections by the plurality of points stored in the air blowing characteristic storage means, and each of the blower voltages is not erased even when an ignition switch is turned off. In a vehicle air volume control device that employs a learning method of storing in a memory and updating and storing the plurality of blower voltages based on the manual setting of the air volume, when the air volume is manually set, the manual operation is performed. An air flow rate control device for a vehicle, wherein the air flow rate manually set is learned only when a predetermined time has elapsed after the setting.