JP3332992B2 - Control unit for air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for controlling an air conditioner based on detected values such as a set temperature and a temperature in a vehicle.

[0002]

2. Description of the Related Art Japanese Patent Laying-Open No. 62-122813 discloses that automatic control of air conditioning is performed based on a target blowout temperature. Here, the target outlet temperature is calculated based on the sum of a value obtained by multiplying a set temperature inside the vehicle, the temperature inside the vehicle detected by the sensor, the outside air temperature, the amount of solar radiation, and each gain, and a correction term. If the user feels the temperature inside the vehicle is hot, the user changes the set temperature to a low value, and if the temperature feels cold, the user changes the set temperature to a high value. However, in the control device disclosed in the above publication, a person who is hot or a person who is cold has to correct the set temperature each time, which is troublesome. Japanese Utility Model Publication No. 60-10885 discloses that a variable resistance in an auto amplifier for adjusting the opening degree of various doors is adjusted, thereby making it possible to make corrections according to a user's bodily sensation. It is actually impossible for a user to adjust the variable resistance. Japanese Patent Application Laid-Open No. 62-258807 discloses that the blowing temperature and the blowing air volume are corrected in the feeling setting mode so as to match the user's bodily sensation and stored.

[0003]

However, in Japanese Patent Application Laid-Open No. 62-258807, the subsequent air conditioning control is performed based on the user's one-time correction, so that the correction amount depends on the physical condition of the user at that time. However, there is a drawback that the setting cannot be made optimal for the user's bodily sensation. Also,
Since the correction is performed in the feeling setting mode different from the normal control mode, it is troublesome for the user.

[0004]

As shown in FIG. 1, a control device for an air conditioner according to the present invention for solving the above-mentioned problem includes a set temperature changing means 1 having an operation section and at least a room temperature. Detecting means 2 and set temperature changing means 1
Control means 3 for controlling the air conditioner based on the set temperature data which can be changed according to and the detection data from the detection means 2 ,
Based on the fact that the set temperature is increased or decreased by the set temperature changing means 1 while controlling the air conditioner, learning data for causing the control means 3 to execute control corresponding to the increase or decrease of the set temperature is calculated. and, when the control after the air conditioning system, and the training data includes a learning means 4 for supplying to the control means 3. In one embodiment, the learning means 4
Calculates an initial set temperature as learning data. In this case, the control means 3 sets the set temperature changing means 1 from the start of the control.
Until the set temperature is changed, the control is performed based on the initial set temperature and the detected data. And on
The learning means changes the set temperature by the set temperature changing means.
When the accumulated value exceeds the threshold in the direction of temperature rise,
Add a predetermined value to the initial set temperature to update this initial set temperature.
Newly, the stacking value of the set temperature change is
When the threshold is exceeded, subtract a predetermined value from the initial set temperature.
To update the default temperature. The learning means is
Increase the value smaller than the set temperature change by the constant temperature change means.
Update the initial setting temperature in addition to the initial setting temperature. Further
The apparent set temperature display hand that displays the apparent set temperature
Initially, this apparent set temperature is set to the reference value at the start of control.
Means for initializing the apparent set temperature to
Set temperature display means is set by the set temperature change means
When the temperature changes from the default temperature, this change is
The apparent set temperature added to the reference value is displayed. In another aspect, the control unit 3 performs control based on an equation including set temperature data, detection data, and a constant, and the learning unit 4 adjusts at least one of the constants to obtain the learning data. I do. In this aspect, there is further provided a set temperature initialization means for initializing the set temperature to a reference value at the start of control.

[0005]

When the set temperature is changed, learning data is created based on the change, and the subsequent air conditioning control is performed based on the learning data, so that an air conditioning environment suitable for the user's experience can be provided.

[0006]

An embodiment of the present invention will be described below with reference to FIG. FIG. 2 shows a schematic configuration of a part of the vehicle air conditioner. The air conditioning duct 20 is provided with a blower (not shown), an evaporator 21, an air mix door 22, and a heater core 23 in this order in the downstream direction.

The air mix door 22 adjusts the ratio of air passing through the heater core 23 and air not passing through the heater core 23 in accordance with the degree of opening. The air that has passed through the heater core 23 and the air that has not passed through the
3, the temperature is adjusted by mixing and the air is blown into the vehicle from the air outlet.

A control device for controlling an air conditioner including the air mix door 22 includes a control unit 10. For example, a control signal from the control unit 10 is sent to the drive circuit 25 and the air mix door 22
Is driven and controlled. The control unit 10 includes a microcomputer and an A / D converter.

The control unit 10 includes an up switch 11a for changing the set temperature Tdc in the vehicle, a down switch 11b (set temperature changing means), a vehicle temperature Tr.
Temperature sensor 12 (detection means) for detecting the outside temperature, an outside air temperature sensor 13 (detection means) for detecting the outside air temperature Ta outside the vehicle, and a solar radiation sensor 14 (detection means) for detecting the amount of solar radiation Q
Is input. Up switch 11a is 1
Each time the switch is pressed, the set temperature is raised by 0.5 ° C., and the down switch 11b is lowered by 0.5 ° C. each time the switch is pressed. further,
A display 15 for displaying a set temperature is connected to the output side of the control unit 10.

The control unit 10 controls the actuator 24 and others based on the input data. The details will be described below with reference to the flowcharts of FIGS. In this embodiment, four types of set temperatures are used properly. That is, the operation set temperature Td and the display set temperature T
dd (apparent set temperature), control set temperature Tdc, and storage set temperature Tdc '. The set temperature, the operation set temperature Td, the display set temperature Tdd, the control set temperature Tdc, and the storage set temperature Tdc ′ are all set to 25 ° C. at the time of product shipment.

When the control routine shown in FIG. 3 is started, it is determined in step 101 whether or not the ignition key switch is on. If an affirmative determination is made in step 101, signals from the sensors 12, 13, 14 and the switches 11a, 11b are read in step 102. In step 103, it is determined whether or not the ignition key switch is turned on and this is the first routine. If a negative determination is made in step 103, it is determined in step 104 whether the set temperature has been changed. If a negative determination is made , the automatic control shown in FIG. 4 is executed.

The automatic control shown in FIG. 4 will be described below.
In step 501, the target outlet temperature Xm is calculated by the following equation. Xm = A.Tdc-B.Tr-C.Ta-D.Q + E where Tdc is the set temperature for control, A is the gain, T
r is the vehicle interior temperature indicated by the vehicle interior temperature sensor, B is its gain,
Ta is the outside air temperature indicated by the outside air temperature sensor, C is its gain, Q is the amount of solar radiation detected by the solar radiation sensor, D is its gain, and E is a correction term. Next step 502
Calculates the opening of the mix door based on the target outlet temperature Xm, and outputs a control signal to the drive circuit 25 of the actuator 24. In the next step 503, the intake door,
Other controls such as a blower and a blow mode door are executed, and the process returns to step 101. In step 503, the display set temperature Tdd is displayed on the display unit 15.

If a positive determination is made in step 104, that is, the up switch 11a or the down switch 11b
If it is determined that the operation set temperature Td has been changed by the operation of (1), in step 105, the control set temperature Tdc is calculated by the equation T
Set to the value of dc '+ (Td-25). Further, the set temperature for display Tdd is set to the set temperature for operation Td, and is displayed on the display 15. When the above is completed, the process proceeds to step 501. If a negative determination is made in step 101, the operation set temperature Td, the display set temperature Tdd, and the control set temperature Td are set in step 113.
c, The storage set temperature Tdc 'and other control variables are written to the memory, and this routine ends.

Next, a routine which is a feature of the present invention will be described. If a positive determination is made in step 103,
In step 106, a difference ΔTd between the set operation temperature Td at the end of the previous control and 25 ° C. is calculated. Next step 107
Calculates M + ΔTd to update M. The initial value of M is 0. M indicates the stacked value of ΔTd. In step 108, it is determined whether or not the stack value M is equal to or larger than the threshold value α.
This threshold value α is set to a level that is not easily exceeded by changing the set temperature in one air conditioning control. For example, it is set to 3 ° C. If a positive determination is made in step 108, step 1
In step 09, a predetermined value β (for example, 0.5
(° C.), the storage set temperature Tdc ′ is updated, and the stacking value M is initialized to zero. If a negative determination is made in step 108, the process proceeds to step 110. In step 110, it is determined whether M is equal to or smaller than a threshold value -α. If an affirmative determination is made in step 110, a predetermined value β is subtracted from the storage set temperature Tdc to update the storage set temperature Tdc ′ and initialize the stacking value M to zero in the next step 111.
Proceed to. At step 112, the control set temperature Tdc is made equal to the storage set temperature Tdc '. Further, the set temperature for operation Td and the set temperature for display Tdd are initialized to 25 ° C. Next, the control set temperature Tdc obtained based on the learning data described above.
, The automatic control of steps 501 and 502 is executed. If a negative determination is made in steps 108 and 110, steps 109 and 111 are passed and step 112
Execute In this case, the control set temperature Tdc is made equal to the storage set temperature Tdc 'that is not updated.

As described above, when the set temperature is changed, it is determined at the beginning of the next air-conditioning control whether or not the accumulated amount of change has exceeded the threshold value. If so, the control set temperature is adjusted. An air conditioning environment that gradually matches the user's experience can be realized. In addition, the display of the set temperature is initialized to the reference value of 25 ° C. each time the control is performed, so that the user can change the set temperature from the same familiar reference display state without making the user himself conscious of hot or cold. In addition, it is possible to set a set temperature that naturally matches the user's experience during long-term use. In other words, the display can be performed based on the user's personal experience.

Next, another embodiment will be described with reference to FIG. In this embodiment, step 107 in the routine of FIG.
Are replaced by step 201 shown in FIG. Note that detailed description of steps overlapping with the routine of FIG. 4 will be omitted. When ΔTd is calculated in step 106 (FIG. 3), the storage set temperature Tdc ′ = Tdc ′ in step 201.
+ KΔTd is calculated and the storage set temperature Tdc ′ is updated. Here, K selects a value larger than 0 and smaller than 1. Since K is smaller than 1, the storage set temperature Tdc 'is finely adjusted to a value smaller than the change ΔTd. In the next step 112 (FIG. 3), the control set temperature Td is set to be equal to the storage set temperature Tdc ', and is used for automatic control later. Each time the set temperature is changed, the above-mentioned routine is executed, and the control set temperature is finely adjusted, so that an air conditioning environment that gradually matches the user's bodily sensation can be realized.

Further, another embodiment will be described with reference to FIG. When this routine starts, step 30
At 1, the set temperature Tdc is initialized to 25 ° C., and a change flag described later is reset. In this embodiment, the set temperature Tdc is directly changed by the switches 11a and 11b, and the steps 501 to 50 are performed based on the set temperature Tdc.
Automatic control is performed in step 3 and the set temperature Tdc is displayed on the display 15. In the next step 302, the ignition key switch is turned on to determine whether or not this routine is the first routine. In the first routine, an affirmative determination is made, and the routine proceeds to step 303. In step 303, it is determined whether or not a correction flag described later is set. If a negative determination is made in step 303, step 304
To determine whether the blower is on. Step 30
If a negative determination is made in step 4, the process proceeds to step 501. If an affirmative determination is made in step 304, the set temperature T is set in step 305.
It is determined whether or not dc is 25 ° C. If an affirmative determination is made in step 305, the process proceeds to step 501.

If a negative determination is made in step 305, it is determined in next step 306 whether the set temperature has been changed. If an affirmative determination is made in step 306, a change flag is set in step 307. This is a flag indicating the fact that the set temperature has been changed. In the next step 308, the timer T
Reset m. This corresponds to starting the measurement of the elapsed time from the reference time with the time when the set temperature is changed as the reference time. Next, the routine proceeds to step 501, where automatic control is executed. A negative determination is made in step 306 and a determination is made in step 309 as to whether the change flag is set. If a negative determination is made in step 309, the process proceeds to step 501.

If an affirmative determination is made in step 309, the timer Tm is incremented in the next step 310. In the next step 311, it is determined whether or not the timer Tm is larger than To. While a negative determination is made in step 311, the automatic control in and after step 501 is performed.

If an affirmative determination is made in step 311, a fine adjustment value γ of the correction term E is calculated in step 312 by the following equation. γ = K ′ (Tdc−25) The calculated γ is written to the memory. Since K ′ is a constant larger than 0 and smaller than 1, the adjustment value γ is smaller than the change (Tdc−25) of the set temperature Tdc from the reference temperature of 25 ° C. In the next step 313, the change flag is reset, and in step 314, the correction flag is set. This correction flag indicates the fact that the fine adjustment value γ has been calculated. Then, the process proceeds to step 501.

As described above, when the fine adjustment value γ is calculated in the previous control, an affirmative determination is made in step 303 in the first routine of the next control, and the routine proceeds to step 315. In step 315, the correction term E is updated by adding the fine adjustment value γ to the correction term E. In step 316, the correction flag is reset, and in step 317, the timer Tm is reset, and the flow advances to step 304. As described above, the correction term E is finely adjusted according to the change in the set temperature, and is used as learning data for the next control. Therefore, an air-conditioning environment that gradually matches the user's bodily sensation can be realized.

Another embodiment will be described with reference to FIG. In this embodiment, step 312 in FIG.
01 to step 406, and step 315 by step 407. In FIG. 7, the same steps as those in FIG. 6 are denoted by the same reference numerals, and detailed description will be omitted. If an affirmative determination is made in step 311, step 4
In step 01, a difference ΔTdc between the set temperature Tdc and 25 ° C. is calculated.
In the next step 402, the difference ΔTd is added to the stack value M to update the stack value M. In step 403, it is determined whether or not the stack value M is equal to or greater than a threshold value α. Step 4
If an affirmative determination is made in step 03, in step 404 the storage correction term E '+ β is updated as a storage correction term E' and written into the memory. If a negative determination is made in step 403, step 40
At 5, it is determined whether or not the stack value M is equal to or smaller than the threshold value -α. If a negative determination is made in step 405, the process proceeds to step 501. If an affirmative determination is made in step 405, the storage correction term E'-β is updated to the storage correction term E ', written into the memory, and the flow advances to the next step 313. If an affirmative determination is made in step 303, the storage correction term E 'is written to the correction term E in step 407. Next, the routine proceeds to step 316. As described above, since the correction term is corrected when the accumulated value of the set temperature change exceeds the threshold value, an air-conditioning environment that gradually matches the user's bodily sensation can be realized.

[0023]

According to the present invention, when the set temperature is changed, learning data is created based on the change, and subsequent air conditioning control is performed based on the learning data. Therefore, an air-conditioned environment in which the user's experience is learned can be provided. .

[Brief description of the drawings]

FIG. 1 is a block diagram showing a basic configuration of the present invention.

FIG. 2 is a block diagram showing a schematic configuration of an embodiment of the present invention.

FIG. 3 is a flowchart showing a part of a routine executed by the microcomputer.

FIG. 4 is a flowchart showing the remaining part of the routine executed by the microcomputer.

FIG. 5 is a part of a flowchart of a routine corresponding to another embodiment executed by the microcomputer.

FIG. 6 is a flowchart of a routine executed by a microcomputer according to still another embodiment.

FIG. 7 is a part of a flowchart of a routine executed by the microcomputer according to still another embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 set temperature changing means 2 detecting means 3 control means 4 learning means 10 control unit 11 a up switch (set temperature changing means) 11 b down switch (set temperature changing means) 12 in-vehicle temperature sensor (detecting means) 15 display

Claims (7)

(57) [Claims] 1. A set temperature changing means having an operation unit.
(B) detecting means for detecting at least the room temperature; and (c) a set temperature which can be changed by the set temperature changing means.
Based on the data and the detection data from the detection means,
Control means for controlling the air conditioner; and (d) means for changing the set temperature while controlling the air conditioner.
Based on the fact that the set temperature is raised or lowered by the step,
Control corresponding to the rise and fall of the constant temperature is executed by the control means.
Learning dataAs the initial setting temperatureAnd then
This learning data is used by the control
Learning means to supply to the stageWhenEquipped,The control means controls
The set temperature is changed by the set temperature changing means from the start
Until the above, based on the initial set temperature and the detection data
ControlI  The learning means is configured to change the set temperature by the set temperature changing means.
When the stacking value exceeds the threshold in the temperature rise direction,
Add a predetermined value to the initial set temperature and set this initial set temperature.
Update, the stacking value for the set temperature change is the temperature decreasing direction
When the threshold value is exceeded, the specified value is subtracted from the initial set temperature
Air conditioner characterized by updating the initial set temperature
Control device. (2)(A) Set temperature changing means having an operation unit
When, (B) detecting means for detecting at least the room temperature; (C) Set temperature that can be changed by the set temperature changing means
Based on the data and the detection data from the detection means,
Control means for controlling the air conditioner; (D) Steps for changing the above set temperature when controlling the air conditioner
Based on the fact that the set temperature is raised or lowered by the step,
Control corresponding to the rise and fall of the constant temperature is executed by the control means.
Calculate the initial set temperature as learning data
This learning data is used by the control
Learning means to supply the steps Wherein the control means controls
The set temperature is changed by the set temperature changing means from the start
Until the above, based on the initial set temperature and the detection data
Control  The learning means is for changing the set temperature by the set temperature changing means.
Add a value smaller than the minute to the initial setting
A control device for an air conditioner, wherein a degree is updated. (3)(A) Set temperature changing means having an operation unit
When, (B) detecting means for detecting at least the room temperature; (C) Set temperature that can be changed by the set temperature changing means
Based on the data and the detection data from the detection means,
Control means for controlling the air conditioner; (D) Steps for changing the above set temperature when controlling the air conditioner
Based on the fact that the set temperature is raised or lowered by the step,
Control corresponding to the rise and fall of the constant temperature is executed by the control means.
Calculate the initial set temperature as learning data
This learning data is used by the control
Learning means to supply the steps Wherein the control means controls
The set temperature is changed by the set temperature changing means from the start
Until the above, based on the initial set temperature and the detection data
Control  In addition, an apparent set temperature table that displays the apparent set temperature
Indicating means and the apparent set temperature to the reference value at the start of control.
Initializing means for initializing the apparent set temperature for initialization.
The set temperature display means is provided by the set temperature change means.
When the set temperature changes from the initial set temperature, this change
Displays the apparent set temperature obtained by adding the minute to the above reference value
Characterized byControl unit for air conditioner. 4. A set temperature changing means having an operation section.
When, (ii) a detection means for detecting at least room temperature, (iii) alterable set temperature by the temperature setting changing means
Based on the data and the detection data from the detection means,
Control means for controlling the air conditioner; and (d) means for changing the set temperature when controlling the air conditioner.
Based on the fact that the set temperature is raised or lowered by the step,
Control corresponding to the rise and fall of the constant temperature is executed by the control means.
Calculate learning data to control the air conditioner later.
At this time, the learning means for supplying the learning data to the control means
And a control unit , wherein the control unit performs control based on set temperature data, detection data, and an expression including a constant, and the learning unit adjusts at least one of the constants to obtain learning data. A control device for an air conditioner, comprising: a set temperature initializing means for initializing a set temperature to a reference value at the start of control. 5. The air conditioner is a vehicle air conditioner, and the control means sets a target outlet temperature Xm to Xm = A.Tdc-B.Tr-C.Ta-DQ + E (where Tdc is a set temperature, and A is The gain and Tr are the vehicle interior temperature indicated by the vehicle interior temperature sensor as the detection means, B is the gain, Ta is the outside air temperature indicated by the outside air temperature sensor as the detection means, C is the gain, and Q is the sunlight sensor as the detection means. The detected amount of solar radiation, D is its gain, and E is a correction term.), And controls the vehicle air conditioner based on the target blow-out temperature. Correction term E
Claim, characterized in that the correction to the learning data 4
Control device for air conditioner described in 6. The learning means adds a predetermined value to the correction term E and adds the correction term E to the correction term E when the accumulated value of the change of the set temperature by the set temperature change means exceeds the threshold value in the temperature increasing direction. 6. The correction term E according to claim 5 , wherein the correction term E is updated by subtracting a predetermined value from the correction term E when the stack value corresponding to the change in the set temperature exceeds the threshold value in the temperature decreasing direction. Control unit for air conditioner. 7. The control for an air conditioner according to claim 5 , wherein said learning means supplies, as learning data, a correction term E which has been changed by a small amount each time the set temperature is changed by the set temperature changing means. apparatus.