JPS6249207B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a car air conditioner control device that automatically controls a vehicle interior temperature, and particularly to a control device that facilitates changing a control target value (adjusted temperature) of a vehicle interior temperature.

A car air conditioner control device equipped with an automatic temperature control device is usually equipped with a temperature setting device so that the temperature can be changed according to the passenger's preference. Conventionally, it has been common practice to use a variable resistor as this temperature setting device.

However, since the manipulated variable of a variable resistor is continuous and the operating position is moved while visually checking the scale plate, it is not easy to set the operating position at any one point, and therefore it is difficult to set the adjusted temperature to an arbitrary value. There are disadvantages such as the operation to change to the current state is cumbersome, and the driver's attention to other information decreases slightly while driving.

JP-A-55-68417 discloses the use of an up/down switch and an up/down counter as a temperature setting device. but,
Even with this method, it is necessary to confirm the set temperature using a visual indicator when setting the temperature.

SUMMARY OF THE INVENTION An object of the present invention is to provide a car air conditioner control device that can easily and reliably set the temperature without reading the displayed value of the set temperature by skillfully utilizing voice notification.

The present invention will be described below based on embodiments shown in the accompanying drawings.

FIG. 1 is an overall configuration diagram showing one embodiment of a device implementing the present invention, which uses an on-vehicle microcomputer that executes digital arithmetic processing using software according to a predetermined air conditioning control program.

In FIG. 1, reference numeral 1 denotes a car air conditioner duct installed in a car, through which air from outside the car is introduced through an outside air intake port 1a, and indoor air is taken in and circulated through an inside air intake port 1b. Reference numeral 2 denotes an inside/outside air switching damper which selectively opens the outside air intake port 1a and the inside air intake port 1b to switch between outside air introduction and inside air circulation. Reference numeral 3 denotes a blower motor that sucks in air from the outside air intake port 1a or the inside air intake port 1b and blows the air, and controls its rotational speed to change the air flow rate. Reference numeral 4 denotes an evaporator disposed across the duct 1, through which air blown by the blower motor 3 is cooled and passed. Reference numeral 5 denotes a heater core disposed within the duct 1, which introduces engine cooling water and uses the heat thereof to heat the blown air. 6 is an air mix damper provided on the upstream side of the heater core 5, which adjusts the proportion of air passing through the evaporator 4 introduced into the heater core 5 side;
The temperature is adjusted by a mixture of cold cooling air and warm heated air, and the mixture is blown into the passenger compartment 7. The opening degree of the air mix damper 6 is automatically controlled to maintain the room temperature at the control target set temperature based on information on the inside and outside air temperatures and feedback of the opening degree information.

8 is a room temperature sensor that detects the temperature inside the vehicle compartment 7 and generates a room temperature signal; 9 is an opening sensor that detects the opening of the air mix damper 6 and generates an opening signal;
It consists of a potentiometer linked to the air mix damper 6. Reference numeral 10 denotes an outside temperature sensor that detects the temperature of the air outside the vehicle and generates an outside temperature signal. 15 is an A/D converter that converts analog signals into digital signals, which sequentially converts the room temperature signal from the room temperature sensor 8, the opening signal from the opening sensor 9, and the outside temperature signal from the outside temperature sensor 10 into digital signals. It is something to do.

Reference numeral 11 is a self-reset type up switch for raising a set temperature which is a control target for the vehicle room temperature. 12 is a similar down switch that lowers the set temperature. These switches 11,
12 is attached to a control panel or a handle position that is easy for the driver to operate, and generates a high-level signal when it is turned on. D-type flip-flops 13 and 14 generate first and second high-level period signals while the up and down switches 11 and 12 are turned on twice, respectively. 11A and 12
A is an indicator lamp, each flip-flop 13,
14, the operation buttons of up and down switches 11 and 12 or their vicinity are illuminated and displayed. 16A is a NOR gate.

16 is a microcomputer that executes digital calculation processing of software according to a predetermined air conditioning control program, and receives various signals from the room temperature sensor 8, the opening sensor 9, and the outside temperature sensor 10 via the A/D converter 15; and setting change switch 11,1
Based on the signal from 2, various calculation processes for air conditioning control are executed so that the temperature of the vehicle compartment 7 approaches the set target temperature, that is, the set temperature, and various command signals are generated accordingly.

Reference numeral 17 denotes an opening adjustment actuator that adjusts the opening of the air mix damper 6. It is equipped with a drive circuit that amplifies the command signal from the microcomputer 16, and the drive signal from the drive circuit controls the opening of the air mix damper 6. It adjusts the opening degree to increase, decrease the opening degree, and maintain the opening degree, and uses individual solenoid valves that connect the negative pressure source and the passage to the atmosphere intermittently, and the negative pressure supplied by the intermittent operation of the solenoid valves, and the atmosphere. This is a combination of a diaphragm actuator that responds to the
18 is a motor drive circuit that controls the rotation speed of the blower motor 3, which receives and latches a rotation speed control command signal from the microcomputer 16, converts the command signal from D/A, and rotates the blower motor 3 by DC amplification. It is something to do. 19 is a switching actuator that controls the operation of the solenoid valve according to a switching command signal from the microcomputer 16;
Using the action of negative pressure, the internal/external air switching damper 2 is switched to select internal air circulation or external air introduction.The external air introduction state is shown by a solid line, and during internal air circulation, the internal/external air switching damper 2 is switched to the dotted line side. There is.

20 is a digital voice synthesizer installed in the front part of the vehicle interior, which generates voice by synthesizing voice using voice data sequentially sent out from the microcomputer 16. For example, it is described in Vol. 21, No. 12 of Electronic Technology. A digital speech synthesizer based on the PARCOR method is used. 20A is a speaker. 2
1 is a digital display that displays the set temperature, and includes a latch circuit that latches a display signal from the microcomputer 16, and a decoder driver that drives the display section with the display signal latched by this latch circuit. It is equipped with the following.

Next, FIG. 2 shows the microcomputer 16
16a is the central processing unit (CPU) of the microcomputer 16.
A crystal resonator 16b is connected to obtain a reference clock of several megahertz (MHg), and software digital arithmetic processing is executed in synchronization with the reference clock, and the address bus 16c, control bus 16d, and data bus 16e are Read-only memory (ROM) 16 for exchanging various information via
f, a read/write memory (RAM) 16g, and an input/output (I/O) circuit 16i. All of the circuit configurations are made of semiconductor integrated circuits.

The ROM 16f has an air conditioning control program that sequentially stores calculation procedures for air conditioning the vehicle interior step by step, and audio data that is stored sequentially for each predetermined area to generate voices for numbers 18 to 32. The CPU 16a executes the calculation process by sequentially reading out the calculation procedures of the air conditioning control program, writes and stores various data during the calculation in the RAM 16g, and reads out the data when necessary. . Furthermore, CPU1
The input/output of various signals between the microcomputer 6a and external equipment of the microcomputer 16 is adjusted by an I/O circuit 16i.

Next, the operation of the above configuration will be explained with reference to the calculation flowcharts shown in FIGS. 3 to 5.

FIG. 3 is a calculation flowchart showing the overall calculation processing by the air conditioning control program of the microcomputer 16, FIG. 4 is a calculation flowchart showing the detailed calculation processing of the sound generation calculation routine in FIG. 3, and FIG. 5 is the setting 3 is a calculation flowchart showing interrupt calculation processing based on signal changes from change switches 11 and 12;

First, the overall arithmetic processing of the microcomputer 16 will be explained. This microcomputer 16 first starts at the start step 100 in FIG.
Then, the calculation process is started and the initial setting routine 2 is started.
The program proceeds to 00 and sets its registers, counters, latches, etc. to the initial states necessary to start the arithmetic processing. This setting operation includes an operation to clear (0) the start flag, which will be described later, an operation to set the first flag (1), an operation to set timer data A to a value for the number of repetitions of approximately 2 seconds, and an operation to set the set temperature data. This includes operations such as setting TS to "25" and sending set temperature data TS to the display 21. After this initial setting, the process proceeds to a sound generation calculation routine 300.

In this sound generation arithmetic routine 300, arithmetic processing is executed to generate sounds for numerical values 18 to 32 when changing the set temperature, and the process proceeds to various air conditioning control arithmetic routines 400.

In this various control calculation routine 400, the blower motor 3 in the car air conditioner is , the opening/closing angle control of the air mix damper 6, the switching control of the inside/outside air switching damper 2, etc., and then returns to the sound generation calculation routine 300. Thereafter, the main routine arithmetic processing from the sound generation arithmetic routine 300 to the various air conditioning control arithmetic routines 400 is repeated at intervals of several hundred milliseconds (msec).

And during the iterative operation of this main routine,
When the signal applied from the setting change switch 11 to the interrupt (INT) terminal of the microcomputer 16 changes to low level, the calculation processing of the main routine is temporarily interrupted and the process proceeds to the interrupt calculation routine shown in Fig. 5, where the set temperature data TS is It executes arithmetic processing to change the , and returns to the main routine that was suspended earlier.

Next, the overall operation of air conditioning control in various states will be sequentially explained.

First, in a car equipped with this device, when the air conditioner switch (not shown) is turned on to control the air conditioning while the car is driving, a stabilizing power supply circuit (not shown) that is supplied with power from the onboard battery via the ignition switch (not shown) is activated and supplies a stabilized voltage to each part of the electrical system including the microcomputer 16. Then, the microcomputer 16 starts the arithmetic processing at the start step 100 in FIG.
0, various initial settings are made, and then the main routine repeats the calculations.

In the sound generation calculation routine 300, the calculation process is started at the start flag determination step 301 in FIG. 4, but since the start flag is cleared in the initial setting, the determination becomes NO. One calculation process of the sound generation calculation routine 300 is completed. Therefore, the calculation process of the main routine including this sound generation calculation routine 300 is performed over several hundred times.
By repeating this at a cycle of msec, the temperature inside the passenger compartment 7 is set to the set temperature 25 by the calculation processing of the various air conditioning control calculation routines 400 based on the set temperature data TS corresponding to 25°C set in the initial setting. Various air conditioning controls will be started to bring the temperature closer to ℃. Further, the display 21 digitally displays 25° C. based on the set temperature data TS of “25” set in the initial setting.

After that, set the temperature for this vehicle interior air conditioner to 25℃.
Change setting switch 1 to change from to 28℃
1, the flip-flop 13 is set and the signal applied to the INT terminal of the microcomputer 16 changes to low level, so the arithmetic processing of the main routine is temporarily interrupted and the process proceeds to the interrupt arithmetic routine of FIG. In this interrupt calculation routine, the calculation process starts at the first flag determination step 501, and since the first flag is set in the initial setting, the determination is YES, and the up-down determination step is started. 50
Proceed to step 2. This step determines whether the interrupt signal is from flip-flop 13 or from flip-flop 1.
4 is detected by the signal level of input port _I1 , and since it is currently at high level, the determination is not possible.
YES, set up flag step 50
Step 3 sets the up flag, proceeds to start flag set step 505 to set the start flag, proceeds to first flag reset step 506 to reset the flag for the first time, and in step 507, the flip-flops 13, 14 are set from output port _O1 .
The interrupt processing is terminated by sending a signal to reset the interrupt processing, and the interrupt processing returns to the main routine that was temporarily interrupted.

When the start flag 301 of the sound generation calculation routine 300 is reached in this main routine, the determination becomes YES because the start flag has been set, and the timer subtraction step 302 is reached.
The process proceeds to step 303, where the constant 1 is subtracted from the timer data A, which has a repeat operation value of about 2 seconds in the initial settings, and the process proceeds to timer determination step 303, where the subtraction of timer data A has just started. Judgment
The result is NO, and one calculation process of the sound generation calculation routine 300 is completed.

Then, the calculation process of this sound generation calculation routine 300 is repeated together with the calculation process of the various air conditioning control calculation routines 400 at a cycle of several hundred milliseconds, and about 2 seconds have passed since subtraction of dimer data A was started. When the value of timer data A becomes 0, when the timer determination step 303 is reached, the determination is made.
YES, up flag judgment step 304
Since the up flag has been set, the judgment becomes YES, and the value addition step 30 is performed.
Proceeding to step 7, add the constant "1" from the voice numerical value T, that is, "T = 25 + 1 = 26. Proceeding to numerical value judgment step 308, since T = 26, the judgment becomes NO, and the area selection step is performed. Proceed to 309.
Then, in this area selection step 309, the ROM 16f for the audio numerical value T (“26” at this time) is selected.
The audio data generation area is selected, and the process proceeds to audio data transmission step 310.
The audio data from the audio data generation area selected in step 9 is sequentially sent to the digital audio synthesizer 17 at a repetition period of several milliseconds, and the process proceeds to timer data set step 311, where the timer data A is repeatedly calculated for about 2 seconds. Set to a numerical value and perform sound generation calculation routine 30.
One operation process of 0 is completed. Due to this,
The digital voice synthesizer 20 and the speaker 20A generate a "nijiyuuroku" sound.

Then, since the timer data A is set again, the next time the sound generation calculation routine 30
0, start flag determination step 301, timer subtraction step 302, timer determination step 303
Execute the calculation process. After that, about 2 seconds have passed, and when the timer data A updated in the timer subtraction step 302 becomes 0, the next timer judgment step 303 makes a judgment of YES, and the up flag judgment step 304 and the numerical addition step 30
7. Proceed to the area selection step 309 via the determination step 308 to select the audio data generation area of the ROM 16f for the numerical value T (in this case "27"), and proceed to the audio data transmission step 310 to transmit the selected audio data for several milliseconds. The signal is sent to the digital speech synthesizer 20 at a repetition period of . Then, one operation process of the sound generation operation routine 300 is completed through the timer data set step 310. As a result, the voice numerical value T is updated to 27, and the digital voice synthesizer 20 and the speaker 20A generate a "nijiyushichi" voice.

Then, by further performing the same arithmetic processing as above on "28" of the audio numerical value T, "Nijyuuhachi" is heard from the speaker 20A after about 2 seconds have elapsed.
A sound is generated.

When the driver of this car recognizes this voice and turns on the setting change up switch 11 (in this embodiment, the down switch 12 may also be turned on) to set the set temperature to 28 degrees Celsius. Since the signal applied to the INT terminal of the microcomputer 16 changes to low level, the main routine arithmetic processing is temporarily interrupted and the process proceeds to the interrupt arithmetic routine shown in FIG. Then, the process advances to the first flag determination step 501, and since the first flag has been reset by then, the determination becomes NO, and the process advances to the set temperature setting step 508, where the audio value T at that time is "28". Set temperature data
TS, the process proceeds to display output step 509 to generate the set temperature data TS on the display 21, proceeds to start flag reset step 510 to reset the start flag, and proceeds to first flag set step 51.
1, the first flag is set, and the process proceeds to reset signal sending step 507, where this interrupt arithmetic processing is completed and the process returns to the main routine that was temporarily interrupted earlier. As a result, the set temperature data TS is set to "28" and 28° C. is digitally displayed on the display 21.

Therefore, when the start flag 301 of the sound generation calculation routine 300 in the main routine is reached again, the determination becomes NO because the start flag has been reset (0), and one calculation process of the sound generation calculation routine 300 is completed. finish. Then, in the various air conditioning control calculation routine 400, calculation processing for various air conditioning control is executed based on the changed set temperature data TS of "28". Due to this,
The arithmetic processing of the main routine is repeated at intervals of several hundred milliseconds to gradually bring the temperature inside the vehicle compartment 7 closer to the set temperature of 28°C.

In the above explanation, the case where the set temperature is changed from 25℃ to 28℃ was described, but even if the temperature is other than 28℃, the setting change up switch 11 (or down switch 12) should be turned on when the numerical value for that temperature is generated. It is clear that the set temperature data TS can be changed to that value.

On the other hand, when the setting change down switch 12 is turned on for the first time in order to lower the set temperature data TS, the judgment becomes NO when reaching the judgment step 502 in the interrupt calculation routine of FIG.
The process advances to an up flag reset step 504 to reset the down flag, a start flag set step 505, a first flag set step 506,
In order to finish the interrupt arithmetic processing through the reset signal sending step 507, when the up flag judgment step 304 of the sound generation calculation routine 300 in the main routine is reached, the judgment becomes NO, and the process proceeds to the numerical value subtraction step 305 to set the voice numerical value. The constant "1" is subtracted from T (T=T-1), the process goes through the numerical value judgment step 306, and then goes through the steps 309 and 310 for voice generation command and the timer data set step 311, and then performs that one calculation process. finish. Therefore, this sound generation calculation routine 3
By repeating the arithmetic processing of the main routine including 00, the digital voice synthesizer 20 and speaker 20A return to the original set value TS every 2 seconds.
For example, if it is "28", "nijiyuushichi",
“Nijiyu log”, ... sounds occur one after another.

Also, if you do not turn on the setting change switch 12 or 11 at the timing when the sound is being generated sequentially in the direction of lowering the numerical value T for the set temperature, the numerical value T for the sound will be changed to the numerical value subtraction step 3.
When the value is updated to "18" in step 05, the next numerical determination step 306 makes a YES determination, and the process proceeds to the limit voice generation command step 312, where the voice synthesizer 2
Steps 313 to 31 are instructed to generate the sound of "Setup".
6 (up, down switch 11 or 12)
The set temperature data TS is set to "18", that is, 18 DEG C. (same as when the temperature is turned on for the second time, that is, steps 508 to 511 of the interrupt routine).

Similarly, if you miss the timing to turn on the setting change switch 11 or 12 when the sound is being generated sequentially in the direction of increasing the numerical value T for the set temperature, the numerical value T for the sound updated in the numerical value addition step 307 will be "32'', the next numerical judgment step 308 makes a YES judgment, and in step 312 a command is issued to generate the voice ``Setting up'', and in steps 313 and 314 the set temperature data TS is set to ``32''. do.

That is, in this embodiment, starting from the set temperature data TS at that time, the temperature data T is increased or decreased by "1" in the direction commanded by the up switch 11 or the down switch 12 at the first turn on, and then the up/down Switch or down switch (you can use either one for the second time)
The value indicated by the last audio notification when the temperature is turned on is set as the set temperature data TS.

When the temperature data T reaches the maximum value "32" or the minimum value "18", the temperature data T stops increasing or decreasing, and only the next reverse operation can be accepted.

Of course, it is clear from the above explanation that if the target set temperature is missed, it is possible to reverse the rise and fall midway through without waiting for the temperature notification for the maximum value "32" or the "minimum value". .

In the above embodiment, two self-resetting up and down switches 11 and 12 are used, and by selecting one of the two switches at the first turn on, the set temperature can be raised or lowered. When turning on the switch for the second time, we decided to fix the set temperature no matter which switch was turned on. Even if the temperature rises or falls, the temperature setting can be stopped from increasing or decreasing according to the driver's will, making it easy to use.

In addition, when implementing the present invention, the first and second inputs may be performed using separate switches for raising and lowering the settings. Further, a manual return type switch may be used as the switch. Further, the temperature data T may be replaced as the set temperature data TS each time a voice notification is made.

As described above, in the present invention, two switches are used to decide whether to increase or decrease the set temperature, and a series of audio notifications of the changed temperatures are made, so that special attention must be paid to the display of the set temperature. This has an excellent effect in that the target temperature can be set easily and accurately without any trouble.

Furthermore, by using a self-returning switch to provide flexibility in its operation, there is an excellent effect that setting work can be made easier.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram showing one embodiment of a device implementing the present invention, FIG. 2 is a block diagram showing the detailed configuration of the microcomputer in FIG. 1, and FIG. 3 is a block diagram showing the detailed configuration of the microcomputer in FIG. A calculation flowchart showing the overall calculation processing of the computer, Figure 4 is a calculation flowchart showing the detailed calculation processing of the sound generation calculation routine in Figure 3, and Figure 5 is an interrupt calculation based on a signal change from the setting change switch. It is a calculation flow chart showing processing. 11... Setting change up switch, 12... Setting change down switch, 16... Microcomputer, 16g... RAM, 20... Digital voice synthesizer, 20A... Speaker.

Claims (1)

[Scope of Claims] 1. A car air conditioner control device that maintains and adjusts a vehicle interior temperature to a target temperature, which generates a first interval signal indicating the start timing and end timing in response to a first behavior of an occupant. a second detection means that generates a second section signal indicating the start timing and end timing in response to a second behavior of the occupant that is independent of the first behavior; storage means for storing stored data indicating temperature; a plurality of series of steps for increasing the target temperature indicated by the stored data of the storage means by a predetermined temperature in the first section in response to the first and second detection means; generates a temperature notification signal, and generates a plurality of series of temperature notification signals for lowering the target temperature indicated by the data stored in the storage means by a predetermined temperature in the second period, and at least each of the first and second periods. control means for changing the stored data in the storage means to a value indicating a target temperature corresponding to the temperature notification signal generated last at the end timing of the temperature notification signal; and notification for making audio notification in response to the temperature notification signal from the control means. A car air conditioner control device characterized by comprising means. 2. The car air conditioner control device according to claim 1, wherein the control means changes the stored data at the end timing of each of the first and second sections. 3. A car air conditioner control device that maintains and adjusts the vehicle interior temperature to a target temperature, comprising a first self-resetting switch, a second self-resetting switch, and storage means for storing memory data indicating the target temperature. A first period from the first turning on of the first switch to the next turning on of either the first or second switch, and a period from the first turning on of the second switch to the next turning on of the second switch. A series of complements for determining a second interval until either the first or second switch is turned on, and increasing the target temperature indicated by the data stored in the storage means by a predetermined temperature in the first interval. generating a temperature alarm signal, and generating a plurality of series of temperature alarm signals for lowering the target temperature indicated by the storage data of the storage means by a predetermined temperature in the second interval, and at least each of the first and second intervals. control means for changing the stored data in the storage means to a value indicating a target temperature corresponding to the temperature notification signal generated last at the end timing of the temperature notification signal; A car air conditioner control device characterized by being provided with a notification means.