JPS58139816A - Air conditioner for vehicle - Google Patents

Abstract

PURPOSE:To improve comfortability and handleability by so constituting that an external environment is detected and stored at fixed intervals,while a temperature control pattern is adjusted and stored according to a variation of environmental conditions available until a fixed period of time prior to that moment. CONSTITUTION:A car room temperature 32, a set temperature 34, an atmospheric temperature 38, a quantity of sunshine 50 and a fan speed 36 are applied to a control quantity deciding circuit 46 and a memory circuit 50, and an external environment are detected and stored at fixed intervals. An operation signal of an air flow variation switch 42 is stored in a memory circuit 50. When the fan speed 36 is switched over, a data in the memory circuit 50 is applied to a correction circuit 48, whose variation of environmental conditions is discriminated and an air conditioner 51 is driven by adjusting instructions from a controlling quantity deciding circuit 46 through adjusting air conditioner controlling pattern. Comfortability is improved by incorporating the external environmental conditions automatically in this manner.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic air conditioner, and in particular, when an occupant changes the fan mode during control in the automatic air conditioner mode, a change in external environmental conditions such as the amount of solar radiation up to that point is determined. The present invention relates to a vehicle air conditioner that allows air conditioning to be easily performed according to the preferences of passengers by modifying and storing temperature control patterns.

Conventionally, as this type of vehicle air conditioning device, there is one shown in Fig. 1, for example, which calculates the temperature difference (Tie-Ts) between the vehicle room temperature 1t'l'm and the set target temperature T8. The air temperature and air volume are controlled according to predetermined control conditions so that the cabin temperature becomes equal to the set target temperature T1. That is, when the cabin temperature T-wing is detected by the Wi temperature sensor tlG, when the passenger sets the target humidity TI from the room temperature setting device 1262, the TI and TI signals are input to the control circuit lI&14, and the fan speed is adjusted. The determination circuit 16 determines the amount of air blown out, and the air mix door opening determination circuit 184 determines the mixing ratio of cold and warm air depending on the temperature of the blown air. Fan speed determination circuit 164;
For example, when the temperature deviation (TiL-Ti) is less than a predetermined value, the fan speed is set to the lowest, and when the deviation exceeds a predetermined value, C2 is proportional to the increase in the deviation. The fan moderation is determined based on the fan moderation control pattern y that increases the fan moderation. In addition, the air mix once determining circuit 18 determines the temperature deviation (7aT).
The opening degree of the air mix door corresponding to the outlet air temperature is determined by proportional system 1141 or proportional integral control based on i+), and this ratio H control amount is determined by proportional integral control C.
In addition to the temperature deviation, the opening command is determined under optimal control conditions by taking into consideration corrections based on external temperature, solar radiation, occupant heat generation, etc., which are disturbance factors.

The mechanism section of the air conditioner, which is activated by the signal from the control circuit section 14, is configured to operate a blower 24 for taking in and sending out air from an outside air inlet or an inside air inlet selected by the intake door. An evaporator 26 cools and dehumidifies the incoming air, and a near mix device 28 divides the cold air from the evaporator 26 into 6 parts to be reheated by a heater core 30. The air is mixed with the cooling air from the air and is blown into the vehicle interior through an outlet (not shown).

Further, in a normal air conditioner, in addition to the control circuit 1114, a manual operating device 20 is provided so that the passenger can directly determine the fan speed. 20 can be switched between two.

Therefore, the fan speed command signal obtained by the fan moderation determination circuit 1 of the control circuit section 14 is given to the blower 24ε to determine the blowout air volume, and at the same time, the fan speed command signal obtained from the fan moderation determination circuit 1 of the control circuit section 14 determines the blowout air volume. Air mix device 2
In step 8, the distribution of the cooling air reheated by the heater core 30 is changed to control the temperature of the air blown into the vehicle interior.
Changes in the temperature of the vehicle interior are detected by the room temperature sensor 10 and fed back to the control circuit section 14, so that the room temperature is automatically adjusted to the set temperature.

With such an air conditioner, once the occupant turns on the device and sets the cabin temperature to match his/her preference, the vehicle will automatically be controlled to maintain the temperature at a low temperature, making the car more comfortable. 1: To obtain a room environment.

By the way, in the air conditioning control in the above-mentioned device C2, depending on conditions such as indoor temperature and set temperature, a predetermined control pattern or calculation formula is used.
This method determines the volume of air blown out and is excellent in that it can control the air quality based on thermal equilibrium. However, since the blown air temperature and air volume vary among individual passengers, There may be cases in which you are not necessarily satisfied with the situation.

For example, some people feel that it is better to have strong cold air when cooling the air conditioner, while others may feel that if the cold air is too strong, they will be bothered by the noise of the blower. Ru.

For this reason, even if air conditioning control is performed automatically, the control will not necessarily be tailored to the occupant's preferences.
Each time the external environmental conditions such as the amount of solar radiation change while driving, the passenger has to manually change the sky 11& condition, which has the drawback of being cumbersome to operate.The present invention was made in view of the above d In order to adjust the temperature to suit the passenger's preference in an automatic air conditioner, when switching the fan speed, the external environmental conditions such as the amount of solar radiation must be adjusted for a certain period of time during which the switching operation is performed. Changes are checked, and when carbonization occurs, the temperature control pattern is corrected and stored in accordance with the degree of change.

Hereinafter, the present invention will be explained based on the drawings.

FIG. 3 is a block diagram showing the basic configuration of the present invention. First, to explain the configuration, 32 is a room temperature centimeter using a nermistor or the like that detects the vehicle interior temperature, 34 is a room temperature setting device that sets the set target temperature T, 38 is an outside temperature sensor that detects the outside temperature, 41 is a solar radiation sensor that detects the amount of solar radiation, 3
Reference numeral 6 represents a fan moderation regulator that adjusts the fan speed according to the operator's operation, and 42 represents an air volume increase/decrease switch for correcting the air volume.

44 is a control circuit section, which determines the fan mode shown in Fig. 1.
It is comprised of a control amount determining circuit 46 including a circuit for determining circuit and air mix door abdominal opening, and a correction circuit 48 for modifying the command signal from the control amount determining circuit 4. sO is a storage circuit, and the room temperature sensor 4-'42. Outside temperature 7v88. A sky S control pattern set according to the detected value from the solar radiation sensor 40;
The environmental condition data detected from each of the above-mentioned units and the operation contents of the increase/decrease switch 42 according to the operator's operation are stored. The memory of the operation details of the wind and wrinkle switch 42 is based on the attitude Ta 1ii from the police sensor 32 [@ set room temperature TI from the setting device 34, outside temperature sensor? The conditions including the outside temperature from 38 and the amount of solar radiation from solar radiation sensor 40 are stored. The memory contents stored in the memory circuit 50 are outputted to a correction circuit 48-2, and changes in environmental conditions are determined, and the air conditioning control pattern is corrected by a predetermined method based on the changes and the Koki operation contents, jljg two control welfare circuit 4
Each command signal from 6 is corrected from the above-mentioned modified air conditioning control butter y etc. section 2. Reference numeral 51 denotes an air mechanism mechanism that is operated by an air conditioning control signal from the control circuit section 44 and changes the amount of air blown out and the amount of air, and is equipped with a blower, an evaporator, an air mix device, and a heater core, similar to the conventional device shown in FIG. 1 and w4. used.

Figure 3 shows the configuration of the 1llZ diagram 1: Membership section: This shows the fruit 4II4 of this Komei, and the control path $144
and the memory circuit 50 are realized by a microcomputer that performs program control.

First, to explain the configuration, the room temperature is 32 cm. Outside temperature sensor 38. Each of the a-sensors 4o is a heat-sensitive element such as a thermistor connected to a power source via a bias resistor,
A sliding resistor is used for the room temperature setting @ 34C, and the fan speed regulator s6 can be selected between "auto" and "I movement", and in [manual], the fan speed is continuously adjusted by the sliding resistance @C2. Can be set to . The outputs of the room temperature sensor 38, the outside temperature sensor 38, the solar radiation ψ40%, the room temperature setter 34, and the fan speed regulator 36 are divided by ÷ Lunar Prefecture 5z6, and are time-divided by the sequential scan 62 of the multiplexer 4P52. An A/D converter 54 whose output C is connected to
is converted into a digital signal.

The microcomputer that performs air conditioning control signals is input/Terzeis! ! 6. Program memo 1 (ROM) I
*il, data memo Ij (RAM) 4O, non-volatile memo! It is composed of an 82% output interface (NVM) 64, a central processing unit (CPU) 66, and a Kuimaro gB.The difference from a general microcomputer is that data can be rewritten and even when the power is turned off. The non-volatile memory 62 in which the contents are stored is provided, and the data of the operation contents are stored in the non-volatile memory 62.

In addition to the output of the A/D converter 54, output lines of the air volume increase/decrease switch 42, the changeover switch 92, and the storage permission switch 94 are connected to the input air/surface S6. 42, fan speed regulator 36 is "automatic"
In the case of -2, this is a switch to increase or decrease the current air volume to the air volume of the cloth (for example, 1 increment M (IJP)) If you press the switch to the J side, the air volume will increase at regular intervals until you release the switch. &&1(DC)WN month, the opposite operation command is given, and the selector switch 92 allows the memory of the operation contents to be stored in the non-volatile memo 94!2.

On the other hand, the output interface 6 of the microcomputer
D/MU CM devices 72, 74 are connected to D/MU Hen*! ! Each of the analog signals from 72 and 74 is amplified by amplifiers 76 and 78 and output to the air conditioning mechanism.

The air conditioning mechanism includes an intake door 801 that switches between outside air intake and inside air intake, an air blower 1182 that determines the amount of air blown out by the rotation C2 of a motor 111m, an evaporator 84 that cools and dehumidifies the air that is sent in, and a heater core 86 that reheats the air. It is composed of an air mix door 88 that adjusts the amount, and a quantity-port mechanism 9o that operates the air mix door 88 according to the signal 4 from the amplifier 76 via a command opening 6, two links and a rad. The NAPO mechanism 90 is a general NAPO mechanism that has a motor driven by a NAPO amplifier, and detects the amount of rotation of the air mix door by the motor with a potentiometer and feeds it back to the CHIBO amplifier. C: Of course, the signal from the amplifier 16 is converted into negative pressure output 42 by the electro-pneumatic converter and the load actuator is used to operate the air mix door 88;
The output from the amplifier 78 may also be output from the blower 82.
The motor &2as are connected to each other, and by controlling the rotational speed of the motor according to the amplified output signal -2, the amount of air blown is changed.

Next, the operation will be explained by taking as an example the control of the fan speed which is corrected based on the fluctuation of the amount of solar radiation among the environmental conditions.

Here, in general, crew members rarely operate the direct-to-second switch when the amount of solar radiation fluctuates, and often operate it after a while after the solar radiation changes.Therefore, the change in the amount of solar radiation is determined by differentiating the solar radiation signal. It is also possible to detect the amount of solar radiation at intervals of 10 seconds, but since the time constant needs to be large, in this example, while the amount of solar radiation is detected as data at 10 second intervals, it is always possible to detect the amount of solar radiation obtained in the previous 2 minutes from the current time. The data is compared to detect changes in solar radiation.

FIG. 4 shows an example of a flowchart of the air conditioning control program executed in the embodiment shown in FIG.
2. Solar radiation fluctuation data table (Table 'L's) showing the solar radiation measurement for the previous 2 minutes from the current time, *6 Figure 2, Solar radiation correction data table (Table T4) showing the corrected air volume based on the solar radiation calculation 2. , Figure 7 shows the temperature deviation (Tm
-Ts) based on five air volume control patterns (Table TI
) are shown, respectively, showing the basic solar radiation correction patterns used for C2, and in Figure 8, the temperature side! ! (Tm-
Actual air volume control pattern (Factor 8-c) when there is no disturbance other than temperature deviation, which is based on the air volume basic control pattern y (Fig. 8-a) based on temperature deviation correction data table 7 (Fig. 8-b) ) is shown.

Therefore, according to the program flowchart shown in FIG. 4C, first, when the air conditioner is powered on, program control is started, and along with initial processing such as initial condition setting of the microcomputer, as shown in block 110. , temperature deviation correction table Tas and solar radiation correction data table T stored in advance in the non-volatile memory 1NVM62.

and other correction data table contents in data memo 9.
Store at a predetermined location in RAM 60. Next, in block 112, room temperature sensor 12, outside temperature sensor 88, solar radiation sensor +40 . and room temperature setting device 34, fan speed regulator 36
The analog signal from A/
It is converted into a digital signal by a D converter 54, and then sent to -C and data memory RAM 60 via an input interface 56.
(Stored every 10 seconds. Also, the air volume increase/decrease switch 42
, the changeover switch 92, and the storage permission switch 94 are stored in the data memory RAM 60+2 via the manual interface 56. Here, solar radiation sensor 4
The environmental condition data from 0 is formed as a solar radiation fluctuation data table T for 12 minutes from the present time in the data memory RAM 60 every lθ seconds as shown in FIG. Furthermore, it is assumed that similar data tables are formed for other ring i condition data (outside temperature, etc.).

Next, the state of the selector switch 92 is determined in block 114, and if the mode is N0R1ilAL mode, the state of the changeover switch 92 is determined.
6, predetermined temperature side! ! (Ta T
g) Basic wind source control pattern based on the two (Table T
l), a predetermined solar radiation correction basic pattern is added with a predetermined accuracy, for example, N −Ko ・no +KI” ns (i)N
: Determine the air volume N, determine the air temperature based on the basic pattern of solar radiation correction determined by the two tables T, and determine the air volume N such that 11≦1 with a correction coefficient of 1 m. The opening degree of the air mix door is determined in order to
゜74, amplifier? Nervo mechanism 9G via 6,7Ji.

It outputs to a control system such as a motor 821 and performs air conditioning control.

If the changeover switch 92 is in the IJARN mode, the process proceeds from block 114 to block 118, where it is determined whether or not the fan is operated by the air volume increase/decrease switch 42. If there is no operation, the process proceeds to block 120, where a predetermined Air volume basic control pattern based on temperature deviation (Ti; -Tg) (table T,) 1;, data memo 9 RAM 6
The data of the temperature deviation correction data table T, the solar radiation correction data table (table T4), and other correction data tables that are varnished with a predetermined weight are taken into account, for example, N = 6 (no +4) + ni',
r4 10'l = (2) N: Determined air volume no: Air volume determined from table Tt n-: Air volume determined from table T n:: Air volume determined from table T4 n1: Air volume determined from other correction data tables Ka HKl, Kl: correction coefficient, IK*, ni'+
-Kt l≦1no+nj: The air volume 11N is determined as determined by the actual air volume control pattern shown in Figure 8-c in Figure 8, and the opening degree of the air mix door is determined in block 130 to determine the air temperature. Then, in block 132, the signals corresponding to each determined amount group 2 are output to the control system (2) in the same manner as described above, and the air conditioning is controlled.Here, when the passenger increases or decreases the air volume by operating the air volume increase/decrease switch 42 C2. -2 proceeds from block 118 to block 122, recognizes the current I! 2 that has undergone the correction operation as the correction target state quantity, and
Further≦Ni block 1244-Go forward, this block 124
Then, it is determined whether or not the cause of the ore reserve correction is due to fluctuations in the amount of solar radiation62.

If it is determined that the change is due to a change in solar radiation, in block 128, a solar radiation correction data table (table T
Make the correction in 4). This determination and correction can be done, for example, by
You can do the following:

First, the solar radiation amount for the next 2 minutes from the current time when the wind volume correction was performed is calculated every 10 seconds by referring to the written solar radiation fluctuation data table T, and comparing the data for each address one after another. Determine fluctuations in solar radiation. Note that the judgment criteria may be determined at the time of program creation to suit human senses. In this example, if the variation in solar radiation per 1O second interval is more than a predetermined value, for example 3 or more (column 115),
Or, integrate the amount of solar radiation fluctuation every 10 seconds for 2 minutes.
The solar radiation is measured every second, and when the maximum value for two minutes is more than a predetermined value, for example 5 or more (column B in Figure 5), it is determined that there has been a change in the solar radiation cover. In the example of the quantity change data table Ti, the solar radiation fluctuation is greater than or equal to the predetermined value 3 from address 7 to address 8, and the cumulative amount of solar radiation fluctuation for the two minutes is equal to or greater than the predetermined value 5.
Since the above is the case, it is determined that there has been a change in solar radiation, and it is determined that the cause of the primary air volume correction is due to a change in solar radiation. Next, in response to this discrimination information, the solar radiation correction data table T4 is corrected, but in this example, as is clear from the solar radiation fluctuation data table T4, the solar radiation at the moment when the air volume correction operation is performed. is lO, therefore, it is considered appropriate to correct the air volume corresponding to the solar radiation tlO or more in the solar radiation correction data table T4, and therefore, address 26 and subsequent addresses are corrected.

Due to temperature deviation (TRTg), solar cover, and other environmental conditions,
For example, the final windshield determined by the above-mentioned formula II (2) is determined by the air volume correction operation by the passenger! If 1L16 to 11Lfil17 is increased by 62F111, the microcomputer internally calculates the final solar radiation correction data based on equation (2) (g) and calculates the contribution ratio, and creates the solar radiation correction data table. T.

The air volume data at a predetermined address (address 26 and subsequent addresses in this example) is instructed to increase the air volume based on the result of the calculation in step 1.

For example, if the increase in air temperature is 2, the address 26 of the solar radiation correction data table T4,! 7 is corrected from air volume 5 to air volume 7. Here, address 26.21 is modified so that the data after address 2 does not become less than 7 in air volume, and it is also possible to increase the air volume by 2 at a rate from address 26 onwards. Another butter/
Alternatively, the 7th rg may be determined in advance based on the judgment that the current air volume is the best for the crew
The solar radiation correction basic pattern during NORMAL mode F control (113r! 4 changeover switch 9! reference j [) may also be modified in the same manner as the modification method of the solar radiation correction data table 〒4.

Here, when it is determined that the power supply is turned on in block 184, the revised new solar radiation correction table T4 is created in block 120 when the next program is created. The air flow rate is determined by referring to the data table T1 and other data tables, and air control is performed in the same manner as described above.

On the other hand, if it is determined in block 124 that there is no solar radiation fluctuation, the solar radiation correction table T is not modified, and in block 126 other environmental conditions are When it is determined that there has been a change of more than a predetermined value, the change is detected.
Other correction data tables shall be corrected, and if it is determined that there have been no changes in other environmental conditions, 1
Second, the humidity-difference correction data table T is to be corrected.

Next, when it is determined in block 134 that the power source is powered on, the power source is switched to the backup battery ◆≦2, and as described above (2. The solar radiation correction data table T4, together with the temperature deviation correction table TI and other correction data tables, is stored in the non-volatile memory NVM@2 from the data memo 9 RAM 60 in block 2136.
Predetermined location: Each correction data table that is automatically written and matches the occupant's preferences is stored until the next program execution, and the next air conditioning control will be performed when the power is turned on. If the selector switch 9 is set to LE mode, a command to perform correction based on the contents stored in the non-volatile memo will be issued in the air conditioning control program control, eliminating the need for other troublesome operations. C: 1: The air conditioning control is performed in accordance with the passenger's preference.

In addition, the non-volatile memory NVM in block 116g
The data transfer to 62 can also be performed as determined by the operation of the memory switch 94 in the embodiment of FIG.
For example, the display lamp 6 indicating whether or not data is to be transferred is lit on the machine where the data is to be transferred, the operator is asked whether or not data is to be transferred, and within a predetermined period of time, for example within 10 seconds, the second memory permission switch 94 is turned on. I want to transfer data when
In other words, if no operation is performed within 1) seconds, data transfer will not be performed. In this way, if the memory of the correction operation contents is left to the operator's will, unnecessary memory of the correction operation contents, for example, memory of the correction operation contents when the driver temporarily changes. can be prevented.

As explained above, according to the present invention 1, when an occupant performs an air conditioning control command operation to obtain a desired air conditioning state, the air conditioner changes over a certain period of time from the time of the operation. C1, which determines a change in the tomb condition and corrects the predetermined air conditioning@control pattern stored in the storage means based on the change in the environmental condition and the predetermined correction value determined accordingly; Therefore, once the occupants have performed control command operations that match their preferences in response to changes in environmental conditions, the predetermined air conditioning control pattern will be modified to match the occupants' preferences, and subsequent steps will be no hassle. No new control command operation ≦2, new correction amount - control pattern ≦2, it is possible to achieve the effect that comfortable air conditioning control can be performed.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an example of a conventional device, Fig. 2 is a block diagram showing the basic configuration of the present invention, and Fig. 3 is a control circuit section and a memory circuit section using a 6-micro combiator. Block diagram showing a stylish embodiment of @, No. 411
is 5sli! The flowchart of the program control performed in the embodiment of I, the 5th WA is the solar radiation fluctuation data tape k (table?), and the 61i is the solar radiation correction data table (
table! 4), No. 111 is the basic solar radiation correction pattern, and FIG.
-a) and temperature deviation linear pressure data table Ta CFigure 8-
b) and m light (■) showing the actual air volume control butter/(III-e) when there is no disturbance other than the temperature deviation I11. Hato... Temperature sensor 84-1 [Hatatsu setting device s6...
)1 Moderate adjustment ms m s...outside temperature 40-・
No solar radiation? 42...Air volume increase/decrease switch゛44
...Control-tread section 44! --- Controlled amount determination circuit 4
8...Modified FM bribe S...Chimeji-ro 51...
・Empty 11JIIIIII S...Multiplephrase 54...Music D converter s6...Kukata interface S$...Program memory @0...Data memo 6t...Non-volatile memory 66... Chuo Akanshogu Units) 18-...Timer 72
．． 74...DA converter 76.78...Amplifier 80
...Intake door 82...Blower 82&...
Motor 84... Evaporator 86... Heater core 88-- Air mix door 90... Narpo mechanism 92... Changeover switch 94 Memory permission switch 96... Indicator lamp Fig. 7 6-ray 1 Fig. 8 (-) 1 Yōryōko (1)

Claims (1)

[Claims] In an automatic air conditioner, there is a storage means that detects a physical container representing the external environment at regular intervals and stores it sequentially, and when a fan speed switching operation is detected (2. A determining means for determining a change in external environmental conditions based on data C2 stored in the storage means, and a modification for modifying the m sub-control pattern in accordance with the degree of change when the determining means determines a change in external environmental conditions. What is claimed is: 1. A vehicle air conditioner, comprising means for storing the information.