JPS6233962B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle air conditioning control method in which a target temperature for air conditioning in a vehicle interior is set using voice generation, and the vehicle interior is air conditioned based on the set target temperature.

Conventionally, in auto air conditioners in automobiles, the target temperature for the air conditioning inside the vehicle was set using a temperature regulator built into the control panel inside the vehicle.

However, with this device, the temperature regulator on the control panel must be manually set, so when changing the target temperature while the car is running, the temperature regulator must be precisely positioned for the desired target temperature. There is a problem that it is difficult to set and operate.

The present invention has been developed in view of the above problem, and detects an instruction to change the target temperature setting of the vehicle interior air conditioner, and when this change instruction is detected, automatically generates stepwise temperature values for a predetermined temperature range by voice. By detecting an instruction that is the timing for setting the target temperature and setting the temperature value at the time when the timing instruction is detected as the target temperature, it is possible to easily set the target temperature of the vehicle interior air conditioner even when driving the vehicle. It is an object of the present invention to provide a vehicle air conditioning control method that allows setting changes to be made accurately and accurately.

The present invention will be described below with reference to embodiments shown in the 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. A blower motor 3 sucks air from the outside air intake port 1a or the inside air intake port 1b and blows the air. The rotation speed is controlled 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 installed on the upstream side of the heater core 5, which adjusts the ratio of the air passing through the evaporator 4 to the heater core 5 side, and adjusts the temperature by mixing the cold air of the cooling air and the warm air of the heated air. The air is blown out into the passenger compartment 7 after adjustment. 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 interior 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. Reference numeral 11 denotes a setting change switch, which is a return type push button switch and is mounted on a control panel or a handle position that is easy for the driver to operate, and generates a high level signal only when it is turned on. 12 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.

13 is a microcomputer that executes digital calculation processing of software according to a predetermined air conditioning control program; Based on the signal from the setting change switch 11, various calculation processes are executed for air conditioning control so that the temperature in the passenger compartment 7 approaches the set target temperature, that is, the set temperature, and various command signals are generated accordingly. It is something to do.

Reference numeral 14 denotes an opening adjustment actuator that adjusts the opening degree of the air mix damper 6. The actuator 14 is equipped with a drive circuit that amplifies the command signal from the microcomputer 13. It adjusts the opening degree to increase, decrease the opening degree, and maintain the opening degree, and it uses individual solenoid valves that connect the passage to the negative pressure source and the atmosphere, and the negative pressure supplied by the intermittent action of these solenoid valves and the atmosphere. It is combined with a diaphragm actuator that responds to the 15 is a motor drive circuit that controls the rotation speed of the blower motor 3, and the microcomputer 13
The blower motor 3 receives and latches a command signal for rotational speed control, converts the command signal into A/D, and rotationally drives the blower motor 3 by chopper control. Reference numeral 16 denotes a switching actuator, which controls the operation of the solenoid valve in response to a switching command signal from the microcomputer 13, and uses the action of negative pressure to switch the internal/external air switching damper 2 to select internal air circulation or external air introduction. The outside air introduction state is shown by a solid line, and when inside air is being circulated, the inside/outside air switching damper 2 is switched to the broken line side. Reference numeral 17 denotes 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 13. A digital speech synthesizer based on the PARCOR method is used. 18 is a digital display that displays the set temperature, and includes a latch circuit that latches a display signal from the microcomputer 13, 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 13
13a is the central processing unit (CPU) of the microcomputer 13.
A crystal resonator 13b is connected to obtain a reference clock of several megahertz (MHz), and software digital arithmetic processing is executed in synchronization with the reference clock, and the address bus 13c, control bus 13d, and data bus 13e are Read-only memory (ROM) 13 for exchanging various information via
f, a read/write memory (RAM) 13g, and an input/output (I/O) circuit 13i. All of the circuit configurations are made of semiconductor integrated circuits.

The ROM 13f contains 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 10 to 20. The CPU 13a 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 13g, and reads out the data when necessary. . Furthermore, CPU1
The input/output of various signals between the microcomputer 3a and devices external to the microcomputer 13 is adjusted by an L/O circuit 13i.

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 13, 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 a signal change from the change switch 11. FIG.

First, the overall arithmetic processing of the microcomputer 13 will be explained. This microcomputer 13 first starts its arithmetic processing at the start step 100 in FIG.
0 and sets its registers, counters, latches, etc. to the initial states necessary to start arithmetic processing. This includes the operation of setting the number of repetitions of calculation to a value of about 2 seconds, setting the set temperature data Ts to 25, and sending the set temperature data Ts to the display 18. 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 a sound for a numerical value of 10 to 30 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 13 changes to high 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 It executes the 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, the stabilizing power supply circuit (see Fig. (not shown) is activated and supplies a stabilized voltage to each part of the electrical system including the microcomputer 13. Then, the microcomputer 13 starts the arithmetic processing from the start step 100 in FIG.
Proceed to , perform various initial settings, and then proceed to the main routine's repetitive calculations.

In the sound generation calculation routine 300, the calculation process is started at the start flag determination step 300 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. Perform various air conditioning controls to bring the temperature close to ℃. Further, the display 18 digitally displays 25° C. based on 25 set temperature data Ts set in the initial settings.

After that, set the temperature for this vehicle interior air conditioner to 25℃.
When the setting change switch 11 is turned on to change the temperature from 28°C to 28°C, the signal applied to the INT terminal of the microcomputer 13 changes to high level, so the arithmetic processing of the above main routine is temporarily interrupted and the interrupt calculation shown in Fig. 5 is performed. Proceed to routine. In this interrupt calculation routine, the first flag determination step 501 is performed.
The calculation process is started, and since the first flag is set in the initial settings, the judgment is YES, and the process proceeds to set temperature judgment step 502, where the set temperature data Ts is 25, so the judgment is YES. When the determination becomes YES, the process proceeds to descending flag setting step 503, setting the descending flag, and proceeding to the numerical value setting step.
Proceeding to step 504, the audio numerical value T is set to 31, proceeding to start flag setting step 507, setting the start flag, proceeding to first flag reset step 508, resetting the first flag, and proceeding to return step 509. This interrupt arithmetic processing is completed and the main routine that was temporarily interrupted is returned to.

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 process proceeds to the timer subtraction step 302, where the initial setting is about 2 seconds. The constant 1 is subtracted from the timer data A having the number of repetitions, and the process proceeds to timer judgment step 303. Since the subtraction of timer data A has just started, the judgment becomes NO, and the sound generation calculation routine 300 One calculation process is completed.

Then, the arithmetic processing of this sound generation arithmetic routine 300 is repeated together with the arithmetic processing of the various air conditioning control arithmetic routines 400 at a cycle of several hundred milliseconds, and approximately two seconds have elapsed since the start of subtraction of timer data A. When the value of timer data A becomes 0, when the timer judgment step 303 is reached, the judgment is YES.
, and the process proceeds to step 304 for determining the falling flag.

Since the descending flag is set in this descending flag determination step 304, the determination is not made.
If the answer is YES, proceed to the numerical subtraction step 305 and subtract the constant 1 from the voice numerical value T, that is, T = 31-
1 = 30, proceed to numerical judgment step 306, and T = 30
Therefore, the determination becomes NO, and the process proceeds to area selection step 308. Then, in this area selection step 308, the ROM for the audio value 30 is selected.
Select the audio data generation area of 13f, proceed to audio data transmission step 309, and proceed to area selection step 308.
The audio data is sequentially sent to the digital audio synthesizer 17 from the audio data generation area selected in the repeating cycle of several milliseconds, and then the timer data set step is performed.
Proceeding to step 310, timer data A is set to a value for the number of repetitions of approximately 2 seconds, and the sound generation calculation routine 300 is executed.
One calculation process is completed. As a result, the digital voice synthesizer 17 generates the voice "Sanjiyuu".

Then, since the timer data A is set again, the next time the sound generation calculation routine 30
0, the arithmetic operations of start flag determination step 301, timer subtraction step 302, and timer determination step 303 are executed. After that, about 2 seconds have passed,
When the timer data A updated in timer subtraction step 302 becomes 0, the next timer judgment step 303
The judgment becomes YES, and the descending flag judgment step is started.
Step 304 is followed by numerical subtraction step 305. Then, in this numerical subtraction step 305, the voice numerical value T
(T=30-1=29) and take the numerical judgment step.
Proceeding to step 306, since T=29, the determination becomes NO, and the process proceeds to area selection step 308. Then, the ROM 13f for this area selection step 308-29
Select the audio data generation area and proceed to audio data transmission step 399 to transmit the selected audio data
Digital speech synthesizer 1 sequentially with a repetition period of msec
7, and one calculation process of the voice generation calculation routine 300 is completed through the timer data set step 310. As a result, the digital speech synthesizer 17 generates a "nijiyuku" sound.

Then, by further executing the same arithmetic processing as above, updating the audio numerical value T to 28, and generating audio data corresponding to this updated numerical value, the digital audio synthesizer 17 outputs "Nijiyuuhachi" after approximately 2 seconds have elapsed. A sound is generated.

When the driver of this car recognizes this voice and turns on the setting change switch 11 to set the set temperature to 28 degrees Celsius, the signal applied to the INT terminal of the microcomputer 13 changes to high level. , the arithmetic processing of the main routine is temporarily interrupted and the process proceeds to the interrupt arithmetic routine shown in FIG.
Then, the process proceeds to the first flag determination step 501.
Since the first flag has been reset by then, the determination becomes NO, and the process proceeds to the set temperature setting switch 510, where the audio value T at that time is set to 28 as the set temperature data Ts, and the display output step 511 The process proceeds to step 512 to generate the set temperature data Ts on the display 18, proceeds to start flag reset step 512 to reset the start flag, proceeds to first flag set step 513 to set the first flag,
Proceeding to return step 509, this interrupt arithmetic processing is terminated, and the program returns to the main routine that was suspended earlier. As a result, the set temperature data Ts becomes 28
At the same time, 28°C is digitally displayed on the display 18.

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, and the sound generation calculation routine 30
One operation process of 0 is completed. Then, in the various air conditioning control calculation routine 400, calculation processing for various air conditioning control is executed based on the changed 28 set temperature data Ts. As a result, the arithmetic processing of the main routine is repeated at a cycle 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°C to 28°C was described, but even if the temperature is other than 28°C, if the setting change switch 11 is turned on when the numerical value for that temperature is generated, the set temperature will be changed to that value. It is clear that the data Ts can be changed.

On the other hand, if the set temperature is changed when the set temperature data Ts is lower than 25, when the set temperature determination step 502 in the interrupt calculation routine in FIG. 5 is reached, the determination becomes NO and the descending flag is set. Proceed to reset step 505 to reset the falling flag, and proceed to numerical value setting step 506 to set the audio numerical value T.
is set to 9, start flag set step 507,
In order to finish the interrupt operation processing after the first flag set step 508 and return step 509,
Sound generation calculation routine 3 in the main routine
When reaching the descending flag determination step 304 of 00, the determination becomes NO, and the process proceeds to a numerical value addition step 311, where a constant 1 is added to the voice numerical value T (T=T+
1) Then, the first calculation process is completed through the numerical value determination step 312. Therefore, by repeating the arithmetic processing of the main routine including this speech generation arithmetic routine 300, the digital speech synthesizer 17
From then on, the sounds "Jiyu", "Jiyuichi", etc. are generated in sequence every two seconds.

In addition, if the setting change switch 11 is not turned on at a later time when the numerical value for the set temperature is being sequentially generated in the direction of 30 → 10, the numerical value T for the voice is updated by the numerical subtraction step 305 and 9. Then, the next numerical determination step 306 makes a YES determination, and the process proceeds to a numerical value setting step 307 where the audio numerical value T is reset to 30, followed by an area selection step 308, an audio data transmission step 309, and a timer data setting step 310. In order to complete the one calculation process, the digital voice synthesizer 17 again sequentially generates the voices "sanjiyu", "nijiyuuku", . . . based on the reset numerical value T for voice. Similarly, when the numerical value for the set temperature is being generated sequentially in the direction of 10 → 30, press the setting change switch 1.
If the timing to input 1 is missed, the voice numerical value T updated in the numerical value addition step 311
When becomes 31, the next numerical judgment step 312 is judged.
When the answer is YES, the program proceeds to the numerical value setting step 313 and resets the voice numerical value T to 10, so that the digital voice synthesizer 17 again generates voices such as "you", "you", . . .

In other words, in this embodiment, the sound is generated in order from the numerical value closest to the value of the set temperature data Ts at that time, so if the set temperature is not changed significantly, the sound generation is started and then the set temperature is changed. This has the advantage that it takes less time to turn on the setting change switch 11 for setting.

In the above embodiment, the instruction to change the set temperature setting and the setting timing instruction are given by turning on the setting change switch 11, but the above two instructions may be given by separate switches.
Alternatively, the instructions may be performed by recognizing the audio instructions given by the occupant of the vehicle.

In addition, we have shown a method in which the stepwise numerical sound generation is changed by "1" from 10 to 30, but the value of ±5 is changed by "1" based on the value corresponding to the set temperature at that time. Further, the number of changes at that time is not limited to "1" increments, but may be made smaller as the value approaches the value for the set temperature at that time.

Furthermore, although the microcomputer 13 has been shown to perform changes in the set temperature and various air conditioning controls based on the set temperature, the changes may be performed using a hard logic configuration using electronic circuits.

As described above, in the present invention, when setting the target temperature for controlling the air conditioning inside the vehicle,
Detecting an instruction to change the target temperature setting, automatically generating stepwise temperature values for a predetermined temperature range by voice when detecting this change instruction, and detecting an instruction that is the timing to set the target temperature, Since the temperature value at the time of detecting this timing instruction is set as the target temperature, there is no need to accurately operate the setting position unlike a temperature regulator, etc.
The target temperature setting can be easily changed with only simple instructions using voice generation, and this allows the target temperature setting to be easily and accurately changed even when driving the vehicle without using vision. It has the excellent effect of being able to

[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. 2...Inside/outside air switching damper, 3...Blower motor, 4...Evaporator, 5...Heater core, 6
... Air mix damper, 8 ... Room temperature sensor, 9
...Opening degree sensor, 10...Outside temperature sensor, 11...
...Setting change switch, 13...Microcomputer, 14...Opening adjustment actuator, 15...
Motor drive circuit, 16...Switching actuator, 1
7...Digital speech synthesizer.

Claims (1)

[Scope of Claims] 1. A vehicle that sets a target temperature for air conditioning in the vehicle interior, detects the temperature in the vehicle interior, and adjusts temperature control capability based on the detected temperature and the target temperature to control the air conditioning in the vehicle interior. In a commercial air conditioning control method, an instruction to change the setting of the target temperature is detected, and when the change instruction is detected, stepwise temperature values for a predetermined temperature range are automatically generated by voice, and the timing for setting the target temperature. 1. A vehicle air conditioning control method, comprising: detecting an instruction such that the timing instruction is detected, and setting the temperature value at the time when the timing instruction is detected to the target temperature.