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DESCRIPTION JP2003202896

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DESCRIPTION JP2003202896
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
vehicular air conditioner capable of automatically controlling the air flow rate, and a vehicular
audio device capable of automatically controlling an audio volume.
[0002]
2. Description of the Related Art In the conventional air conditioning system for a vehicle
described in Japanese Patent Laid-Open No. 4-208626, when the use of a telephone is detected,
the blowing noise is reduced by lowering the air blowing amount so as not to disturb the call. I
have to. Further, it is described in the above-mentioned publication that the audio volume is also
reduced when the use of the telephone is detected.
[0003]
However, in the above-described conventional apparatus, since the air flow rate is reduced to the
minimum when using a telephone, the warmth of the occupant is significantly reduced
particularly during the air conditioning transition period, and the occupant is There was a
problem of giving discomfort. In addition, since the audio volume is reduced to the minimum
when the telephone is used, there is a problem that the sudden change in the volume gives the
occupant a sense of discomfort.
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[0004]
The present invention has been made in view of the above points, and it is an object of the
present invention to reduce the discomfort of the occupant due to a decrease in warmth and the
discomfort of the occupant due to a sudden change in audio volume while securing silence
during use of the telephone. Do.
[0005]
In order to achieve the above object, according to the first aspect of the present invention, there
is provided an air conditioner for a vehicle which automatically controls an air blowing amount
into a vehicle compartment based on a heat load. When the air flow rate is reduced based on a
predetermined condition, the air flow rate after the reduction is corrected according to the heat
load.
[0006]
According to this, under a predetermined condition such as use of a telephone, the air flow rate is
reduced to ensure quietness in the vehicle compartment, and by performing the maximum air
conditioning permitted under the predetermined condition, the passenger's feeling is decreased
Pleasure can be reduced.
[0007]
In the invention according to claim 2, a vehicle air conditioner mounted on a vehicle provided
with a voice recognition device (61) for starting voice recognition by a voice recognition start
signal, and automatically controlling an air flow into a vehicle compartment based on a heat load.
The apparatus is characterized by comprising means for reducing the air flow rate by the voice
recognition start signal and means for further reducing the air flow rate when the voice
recognition device (61) fails in voice recognition.
[0008]
According to this, although the air flow rate is reduced at the time of voice recognition operation,
since the air flow rate is further reduced when voice recognition fails, the voice recognition rate
can be improved.
[0009]
In the invention according to claim 3, in the vehicle air conditioner for automatically controlling
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2
the air flow into the vehicle compartment based on the thermal load, means for reducing the air
flow when a call by the telephone (60) is started; (60) means for correcting the amount of
reduction of the air flow rate according to the call volume according to (60).
[0010]
According to this, by setting the air flow rate during the call to a level according to the size of the
other party's voice, it is possible to ensure ease of listening to the call while minimizing the
decrease in warmth.
[0011]
In the invention according to claim 4, the operation means (40) for the passenger to set the air
flow rate is provided, and the operation air (40) is operated to increase the air flow rate when the
air flow rate is being reduced. The time is characterized in that the amount of increase in the air
flow is reduced compared to when the air flow is not reduced.
[0012]
According to this, since the increase amount of the air flow amount at the time of use of the
telephone or at the time of voice recognition operation is reduced, the degree to which the call
and voice recognition are hindered is reduced.
Therefore, it is possible to quickly finish a call or voice recognition operation which is distracting
from driving and which is undesirable for driving safety.
[0013]
In the invention according to claim 5, the display means (42) for displaying the level of the air
flow rate is provided, and when the air flow rate is increased by the operation means (40) while
the air flow rate is being reduced, , The level of the air flow rate set by the operation means (40)
is displayed on the display means (42), and when the operation to reduce the air flow rate is
finished, the actual air flow rate is displayed on the display means (42) It is characterized by
adjusting to the level of air volume.
[0014]
According to this, the same effect as in claim 4 can be obtained, and the request of the occupant
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can be satisfied by increasing the air blowing amount after the call and the voice recognition
operation are finished.
[0015]
The invention according to claim 6 is characterized in that it comprises canceling means (61b)
for prohibiting the operation of the means for reducing the air blowing amount by the voice
recognition start signal.
[0016]
According to this, in the case of a passenger with a clear voice, voice recognition can be
performed without reducing the air flow rate, and therefore, it is possible to inhibit the air flow
rate reduction and prevent the warm feeling reduction.
[0017]
The invention according to claim 7 is characterized in that when the blowout mode is switched to
any of the defroster mode and the foot defroster mode, the operation for reducing the air flow
rate is ended.
[0018]
According to this, priority can be given to the anti-fogging of the window glass, and the view
necessary for traveling safety can be reliably secured.
[0019]
The invention according to claim 8 is a program for controlling the operation of a vehicle air
conditioner that automatically controls the air flow into the vehicle compartment based on the
heat load, and the computer is based on a predetermined condition other than the heat load.
When the air flow rate is reduced, a procedure for correcting the air flow rate after the reduction
according to the heat load is performed.
[0020]
The eighth aspect of the present invention corresponds to the first aspect of the present
invention, and can perform operation control of the air conditioner for a vehicle having the
effects of the first aspect.
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[0021]
In the invention according to claim 9, a vehicle air conditioner mounted on a vehicle provided
with a voice recognition device (61) for starting voice recognition by a voice recognition start
signal, and automatically controlling an air flow into a vehicle compartment based on a heat load.
A program that controls the operation of the device, and executes, in a computer, a procedure for
reducing the air flow by a voice recognition start signal and a procedure for further reducing the
air flow when the voice recognition device (61) fails in voice recognition. It is characterized by
[0022]
A ninth aspect of the present invention corresponds to the second aspect, and can perform
operation control of the air conditioner for a vehicle having the effects of the second aspect.
[0023]
In the invention according to claim 10, a program for controlling the operation of a vehicular airconditioning system for automatically controlling the air flow rate into a vehicle compartment
based on a thermal load, wherein a call by a telephone (60) to the computer is started Then, a
procedure for reducing the air flow rate and a procedure for correcting the reduction rate of the
air flow rate in accordance with the call volume by the telephone (60) are executed.
[0024]
A tenth aspect of the present invention corresponds to the third aspect, and can perform
operation control of the air conditioner for a vehicle having the effects of the third aspect.
[0025]
In the invention according to claim 11, the vehicle audio apparatus is mounted on a vehicle
equipped with a voice recognition device (61) which starts voice recognition by a voice
recognition start signal, and the audio device for vehicle can automatically control the audio
volume. The apparatus is characterized by comprising means for reducing the audio volume and
means for further reducing the audio volume if the speech recognition device (61) fails in speech
recognition.
[0026]
According to this, the audio volume is lowered at the time of speech recognition, but the audio
volume is further lowered if speech recognition still fails, so that the speech recognition rate can
be improved.
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[0027]
In the invention according to claim 12, in the vehicle audio apparatus capable of automatically
controlling the audio volume, means for reducing the audio volume when a call by the telephone
(60) is started, and according to the call volume by the telephone (60) And means for correcting
the amount of reduction in audio volume.
[0028]
According to this, by setting the audio volume during the call to a level according to the size of
the other party's voice, it is possible to ensure the ease of hearing the call.
[0029]
The invention according to claim 13 is characterized in that it comprises canceling means (61b)
for prohibiting the operation of the means for reducing the audio volume according to the voice
recognition start signal.
[0030]
According to this, in the case of a passenger with a clear voice, voice recognition can be
performed without lowering the audio volume, and therefore the audio volume reduction can be
inhibited to prevent the passenger from feeling uncomfortable due to a sudden change in the
audio volume.
[0031]
In addition, the code | symbol in the parenthesis of each said means shows correspondence with
the specific means as described in embodiment mentioned later.
[0032]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIG. 1 shows a
schematic configuration of the whole air conditioning system for a vehicle, and the air
conditioning system 1 for a vehicle comprises an air passage through which air is blown into a
vehicle compartment. An inside / outside air switching box 5 having an inside air inlet 3 and an
outside air inlet 4 is disposed at the most upstream portion of the air passage of the case 2.
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An inside / outside air switching door 6 as an inside / outside air switching means is rotatably
disposed in the inside / outside air switching box 5.
The inside / outside air switching door 6 is driven by the servomotor 7, and an inside air mode
for introducing inside air (air from inside the vehicle) from the inside air inlet 3 and an outside
air for introducing outside air (air outside the vehicle) from the outside air inlet 4 Switch between
modes.
[0033]
At the downstream side of the inside / outside air switching box 5, an electric blower 8 for
generating an air flow toward the vehicle interior is disposed.
The blower 8 is configured to drive the blower fan 8a by the motor 8b.
An evaporator 9 for cooling the air flowing in the case 2 is disposed downstream of the blower 8.
The evaporator 9 is a cooling heat exchanger that cools the air blown by the blower 8 and is one
of the components of the refrigeration cycle 10.
[0034]
The refrigeration cycle 10 is a well-known one formed such that a refrigerant circulates from the
compressor 11 to the evaporator 9 through the condenser 12, the receiver 13, and the expansion
valve 14.
The compressor 11 is rotationally driven by transmitting rotational power of a vehicle engine
(not shown) via the electromagnetic clutch 11a.
[0035]
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On the downstream side of the evaporator 9, a heater core 15 for heating the air flowing in the
case 2 is disposed.
The heater core 15 is a heat exchanger for heating which heats air (cold air) after passing
through the evaporator 9 by using the coolant of the vehicle engine (hereinafter, hot water) as a
heat source, and bypasses the heater core 15 on its side. A bypass passage 16 through which air
flows is formed.
[0036]
Between the evaporator 9 and the heater core 15, an air mix door 17 as a temperature control
means is rotatably disposed.
The air mix door 17 is driven by a servomotor 18 so that its rotational position (opening degree)
can be continuously adjusted.
The amount of air passing through the heater core 15 (warm air volume) and the amount of air
passing through the bypass passage 16 and bypassing the heater core 15 (cold air volume) are
adjusted according to the opening degree of the air mix door 17, thereby It is designed to control
the temperature of the air blown out.
[0037]
The defroster outlet 19 for blowing the conditioned air toward the window glass W of the
vehicle, the face outlet 20 for blowing the conditioned air toward the upper body of the
occupant, and the lower body of the occupant at the most downstream portion of the air passage
of Case 2 Three types of air outlets of the foot air outlet 21 for blowing air-conditioned air
toward are provided.
[0038]
A defroster door 22, a face door 23, and a foot door 24 are rotatably disposed at the upstream
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portion of the outlets 19-21.
These defrost door 22, face door 23 and foot door 24 are driven by a common servomotor 25 via
a link mechanism (not shown).
[0039]
The control device 30 as the control means is configured to include the CPU 31, the ROM 32, the
RAM 33, etc., and stores in advance the control program for air conditioning control of the
vehicle compartment in the ROM 32, based on the control program Perform various operations
and processing.
[0040]
The servomotors 7, 18, 25, the fan drive circuit 34, and the clutch drive circuit 35 are connected
to the output side of the control device 30, respectively.
By controlling the voltage applied to the fan motor 8b by the fan drive circuit 34, the number of
rotations (air flow rate) of the fan motor 8b is controlled.
Further, energization of the electromagnetic clutch 11 a of the compressor 11 is interrupted by
the clutch drive circuit 35 to interrupt the operation of the compressor 11.
[0041]
On the input side of the control device 30, operation switches 37 to 41 of an air conditioning
operation panel 36 provided on an instrument panel (not shown) in front of a driver's seat in a
vehicle compartment are connected.
Among the operation switches 37 to 41, the inside / outside air switching switch 37 as an inside
/ outside air mode setting unit is an inside air switch 37a as an inside air mode setting unit for
manually setting an inside air mode, and an outside air mode setting unit for manually setting the
outside air mode An outside air switch 37b as an automatic inside / outside air mode setting
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means for automatically setting the inside / outside air mode as will be described later.
[0042]
The temperature setting switch 38 outputs a signal of the set temperature in the passenger
compartment, and the blowout mode switch 39 is a signal for manually setting the face mode,
bilevel mode, foot mode, foot defroster mode, and defroster mode as the blowout mode. The air
volume switching switch 40 issues a signal for manually setting the on / off of the blower 8 and
the air volume switching of the blower 8, and the air conditioner switch 41 issues an on / off
signal of the energization of the electromagnetic clutch 11a to perform compression. The
operation of the machine 11 is interrupted.
The air volume switching switch 40 corresponds to an operation means.
[0043]
The air conditioning operation panel 36 is provided with a display 42 as display means for
displaying the level of the air flow, and the display 42 is connected to the output side of the
control device 30.
[0044]
Further, on the input side of the control device 30, an inside air sensor 50, an outside air sensor
51, a solar radiation sensor 52, a water temperature sensor 53, and an evaporator temperature
sensor 54 are connected as sensors for detecting an air conditioning environment condition.
[0045]
The inside air sensor 50 detects an inside air temperature, and generates an inside air
temperature signal Tr according to the detected temperature.
The outside air sensor 51 detects the outside air temperature and generates an outside air
temperature signal Tam corresponding to the detected temperature.
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The solar radiation sensor 52 detects the amount of solar radiation that has entered the vehicle
compartment, and generates a solar radiation amount signal Ts according to the detected solar
radiation amount.
The water temperature sensor 53 detects the temperature of the hot water circulating to the
heater core 15, and generates a water temperature signal Tw corresponding to the detected
water temperature.
The evaporator temperature sensor 54 detects the temperature of the air blown out of the
evaporator 9 and generates an evaporator temperature signal Te corresponding to the detected
temperature.
Then, the air conditioning heat load is estimated from the inside air temperature, the outside air
temperature, and the amount of solar radiation.
[0046]
The vehicle air conditioner 1 of the present embodiment is applied to a vehicle equipped with a
car phone 60, a navigation device 61 for displaying map information and the like, and an audio
device 62 capable of automatically controlling audio volume.
The car telephone 60 outputs a call signal during a call, and the call signal is input to the control
device 30.
[0047]
The navigation device 61 as a voice recognition device is operable by voice, and when the voice
switch 61a is pressed, a voice recognition start signal is output, and voice recognition is started
by the voice recognition start signal.
Then, the voice recognition start signal is input to the control device 30 and the audio device 62,
and the vehicle air conditioner 1 reduces the air flow by the voice recognition start signal, and
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11
the audio device 62 reduces the audio volume by the voice recognition start signal. It is supposed
to be.
[0048]
In addition, the navigation device 61 includes a cancel switch 61b as a cancel means. When the
cancel switch 61b is pressed, a cancel signal is output and a cancel signal is input to the control
device 30 and the audio device 62.
Then, when the cancellation signal is input, the vehicle air conditioner 1 prohibits the operation
of reducing the air flow amount by the voice recognition start signal described above, and when
the cancellation signal is input, the audio device 62 described above An operation to reduce the
audio volume is prohibited by the recognition start signal.
[0049]
Next, the operation of the first embodiment in the above configuration will be described.
First, control of the entire air conditioning will be described according to the flowchart of FIG.
[0050]
When an ignition switch (not shown) is set to the ignition ON position and the power is turned
on, control device 30 starts the control program, and executes calculation and processing
according to the flowchart of FIG.
[0051]
First, in step S1, various timers, control flags and the like are initialized.
Next, in step S2, the set temperature signal Tset is read from the temperature setting switch 38.
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Subsequently, in step S3, input signals from the various sensors 50 to 54 (inside air temperature
signal Tr, outside air temperature signal Tam, water temperature signal Tw, solar radiation
amount signal) to detect air conditioning environmental conditions affecting the air conditioning
state of the vehicle interior Read Ts, evaporator temperature signal Te).
[0052]
Next, at step S4, a target blowout temperature TAO of air blown out into the vehicle
compartment is calculated based on the following equation (1).
The target blowout temperature TAO is a target temperature necessary to maintain the vehicle
interior temperature at the set temperature Tset regardless of the fluctuation of the air
conditioning heat load.
[0053]
Where Kset is a temperature setting gain, Tset is a setting temperature signal, Kr is an internal
air temperature gain, Tr is an internal air temperature signal, and Kam is an external temperature
gain. T0 = Kset · Tset−Kr · Tr−Kam · Tam−Ks · Ts Air temperature gain, Tam is an outside air
temperature signal, Ks is a solar radiation gain, Ts is a solar radiation amount signal, C is a
correction constant.
[0054]
Next, in step S5, the blower voltage BLW to be applied to the blower motor 8b is determined
based on the target blowout temperature TAO.
Specifically, the blower 8 is used in a low temperature area (maximum cooling area) where the
TAO is lower than the first predetermined temperature and a high temperature area (maximum
heating area) higher than the second predetermined temperature where the TAO is sufficiently
higher than the first predetermined temperature. The blower voltage BLW is determined so as to
decrease the air flow of the fan 8 when the TAO is in an intermediate temperature range between
the first predetermined temperature and the second predetermined temperature.
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13
[0055]
Here, since the number of rotations (air flow rate) of the fan 8 is proportional to the voltage
applied to the motor, the air flow rate of the fan 8 can be determined by determining the fan
voltage BLW.
In addition, when the air flow rate of the air blower 8 is set manually by the air volume switching
switch 40 of the air conditioning operation panel 36, the fan voltage BLW corresponding to the
air flow rate of the manual setting is determined.
[0056]
Further, in step S5, at the time of using the telephone or at the time of voice recognition
operation, control for appropriately correcting the fan voltage BLW determined based on the
TAO is executed, the details of which will be described later.
[0057]
Next, in step S6, the target opening degree SW of the air mix door 17 is calculated by the
following formula 2.
[0058]
(2) SW = {(TAO-TE) / (TW-TE)} × 100 (%) where SW = 0%, the air mix door 17 fully closes the air
passage of the heater core 15 and the bypass passage 16 1 is the maximum cooling position (a
position in FIG. 1), and SW = 100% is the maximum heating position (FIG. 1 in which the air mix
door 17 fully closes the bypass passage 16 and fully opens the air passage of the heater core 15).
position b).
[0059]
Next, in step S7, the inside / outside air mode is determined.
Specifically, at the time of automatic control, the inside / outside air mode is determined based
on the target blowout temperature TAO.
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14
That is, when the TAO is in a low temperature range below a predetermined temperature, the
inside / outside air mode is set to the inside air circulation mode, and when the TAO is in a high
temperature range exceeding the predetermined temperature, the inside / outside air mode is set
to the outside air introduction mode.
When the passenger operates the inside / outside air switching switch 37 of the air conditioning
operation panel 36, the inside / outside air mode set manually is determined by the switch
operation.
[0060]
Next, in step S8, on-off control of the operation of the compressor 11 of the refrigeration cycle
10 is determined.
Specifically, comparing the target temperature TEO of the evaporator temperature with the
actual evaporator temperature Te, if Te is higher than TEO, the electromagnetic clutch 11a of the
compressor 11 is turned on to operate the compressor 11 On the contrary, when Te becomes
lower than TEO, the electromagnetic clutch 11a is deenergized to stop the operation of the
compressor 11.
Such intermittent control of the compressor operation maintains the actual evaporator
temperature Te at the target temperature TEO.
[0061]
Subsequently, in step S9, the blowout mode of the blowout air into the vehicle compartment is
determined based on the target blowout temperature TAO.
Specifically, as the target blowing temperature TAO rises from the low temperature side, the
blowing mode is automatically switched sequentially from the face (FACE) mode to the bi-level (B
/ L) mode to the foot (FOOT) mode.
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When the blowout mode is set manually by the blowout mode switch 39 of the air conditioning
operation panel 36, the set blowout mode is determined.
[0062]
Next, in step S10, the control signals determined in the above-described steps S5 to S9 are output
to the actuator motors 7, 18, 25, the fan drive circuit 34, and the clutch drive circuit 35 in FIG.
Control the operation of the Subsequently, after waiting for a predetermined control period τ in
step S11, the process returns to step S2.
[0063]
Next, in the process of step S5, a portion related to control at the time of using the telephone or
at the time of voice recognition operation will be described with reference to the flowchart of
FIG.
[0064]
In FIG. 3, in step S501, it is determined whether or not the cancel switch 61b is pressed and the
cancel signal is output. If the cancel signal is not output, step S501 becomes NO, and the process
proceeds to step S502.
[0065]
In step S502, it is determined whether a call signal as a predetermined condition is output or
whether the voice recognition start signal as a predetermined condition is output when the voice
switch 61a is pressed, and at least one of the signals is If it is output, that is, during a call or
speech recognition operation, step S502 becomes YES and the process proceeds to step S503.
[0066]
Here, when the fan voltage BLW is high, the air blowing noise interferes with the call and voice
recognition. Therefore, in step S503, whether or not the fan voltage BLW determined based on
the TAO is a level at which the call etc. may be inhibited. Determine
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16
In this example, when the blower voltage BLW exceeds 6.25 V, it is determined that there is a
possibility that the call or the like may be inhibited, and the step S503 becomes YES and the
process proceeds to the step S504.
[0067]
In step S504, the blower voltage BLW is calculated according to the difference .DELTA.T
(.DELTA.T = Tr-Tset) between the inside air temperature Tr and the set temperature Tset, that is,
the heat load.
More specifically, as shown in the map of step S504 in FIG. 3, the blower voltage BLW is not set
so low that the vehicle interior is hot enough during cooling, and when the temperature
difference ΔT is 10 ° C. or more, the fan voltage is With the BLW set to 8.0V, the fan voltage
BLW is gradually decreased while the temperature difference ΔT reaches 10 ° C to 0 ° C, and
when the temperature difference ΔT is 0 ° C, the fan voltage BLW is set to 6.25V. ing.
[0068]
Then, in step S504, of the fan voltage BLW determined based on TAO and the fan voltage BLW
determined based on the temperature difference ΔT in the map of step S504 in FIG. Decide as.
Steps S502 to S504 correspond to a procedure of correcting the air flow after the reduction
according to the heat load when the air flow is reduced based on a predetermined condition
other than the heat load.
[0069]
As described above, under a predetermined condition such as during a telephone call or voice
recognition operation, the amount of air blown is reduced to ensure quietness in the vehicle
compartment and to perform maximum allowable air conditioning under the predetermined
condition. It is possible to reduce the discomfort of the occupant due to the decreased feeling.
[0070]
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17
Next, the process proceeds from step S504 to step S505, it is determined whether a voice
recognition start signal is output or not, and if the signal is output, that is, during voice
recognition operation, step S505 becomes YES and the process proceeds to step S506. .
In step S506, it is determined by the air volume switch 40 whether or not the occupant has
manually operated the air volume change operation. If there is an air volume change operation,
step S506 becomes YES and the process proceeds to step S507.
[0071]
In step S507, if the change operation is to increase the air volume, the display 42 displays the
level of the air flow rate manually set by the occupant, and the fan voltage BLW is equal to the
fan voltage BLW determined in step S504. Leave as it is. According to this, even if there is a
change operation to increase the air volume during the speech recognition operation, the air flow
rate does not increase, and thus the speech recognition is not disturbed. Therefore, it is possible
to quickly finish the voice recognition operation which is distracting from driving and which is
not preferable for driving safety.
[0072]
On the other hand, if step S505 is NO, that is, if a call is in progress, the process proceeds to step
S508, it is determined by the air volume switch 40 whether or not the occupant has manually
operated the air volume change operation. The process proceeds to step S509. Then, in step
S509, the blower voltage BLW corresponding to the level of the air flow rate set by the occupant
manually is set.
[0073]
The process proceeds from step S507 or step S509 to step S510, and when neither the call
signal nor the voice recognition start signal is output, that is, when it is not in a call nor in voice
recognition operation, step S510 becomes YES and the process proceeds to step S511. Also when
the blowout mode is switched to the foot defroster mode or the defroster mode by the blowout
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mode switch 39, step S510 is YES and the process proceeds to step S511. When step S510 is NO,
the process returns to step S504, and the processes of steps S504 to S510 are repeated.
[0074]
In step S511, it is determined whether or not there has been a manual air volume change
operation during the processing of steps S504 to S510. If the air volume change operation has
not been performed, step S511 is NO, and the process proceeds to step S512 to return to the
blower voltage BLW before the call or the voice recognition operation is started. That is, when
the call or voice recognition operation is finished, or when it is switched to the foot defroster
mode or the defroster mode, the control for reducing the air flow amount is finished, and it is
suitable for the warming feeling of the occupant or the fogging of the window glass. Return to
normal air conditioning control.
[0075]
On the other hand, if step S511 is YES, the process proceeds to step S513, and the blower
voltage BLW corresponding to the level of the air flow rate displayed on the display 42 is set.
[0076]
If step S501 is NO, the process proceeds to step S514. If a call signal is output, step S514
becomes YES, and the process proceeds to step S503 to execute control to reduce the air flow
rate after step S503.
[0077]
When both step S501 and step S514 are NO, the control to reduce the air flow rate after step
S503 is not performed.
According to this, in the case of a passenger with a clear voice, voice recognition can be
performed without reducing the air flow rate, and therefore, it is possible to inhibit the air flow
rate reduction and prevent the warm feeling reduction.
[0078]
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Second Embodiment In the present embodiment, when the voice recognition fails even if the air
blowing amount is reduced at the time of the voice recognition operation, the air blowing amount
is further reduced.
Therefore, in the present embodiment, when the navigation device 61 (see FIG. 1) fails in voice
recognition, a voice recognition recognition failure signal is output from the navigation device
61, and the voice recognition recognition failure signal is the control device 30 (see FIG. 1). It is
supposed to be input to). Further, the control process of FIG. 3 of the first embodiment is
changed as shown in FIG. The other points are the same as in the first embodiment.
[0079]
In FIG. 4, if the speech recognition start signal is output, that is, during speech recognition
operation, step S521 becomes YES and the process proceeds to step S522. In step S522, when
the fan voltage BLW determined based on TAO exceeds 6.25 V, it is determined that there is a
possibility that the voice recognition operation may be inhibited, step S522 becomes YES, and
the process proceeds to step S523.
[0080]
In step S523, the fan voltage BLW is calculated according to the difference .DELTA.T (.DELTA.T =
Tr-Tset) between the inside air temperature Tr and the set temperature Tset. More specifically, as
shown in the map of step S523 in FIG. 4, when the temperature difference ΔT is 10 ° C. or
more, the blower voltage BLW is set to 8.0 V, and the temperature difference ΔT is from 10 ° C.
to 0 ° C. The fan voltage BLW is gradually decreased, and when the temperature difference ΔT
is 0 ° C., the fan voltage BLW is set to 6.25V. Then, in step S523, of the fan voltage BLW
determined based on TAO and the fan voltage BLW determined based on the temperature
difference ΔT in the map of step S523 of FIG. Decide as.
[0081]
The above steps S521 to S523 correspond to means and procedures for reducing the air blowing
amount by the voice recognition start signal.
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[0082]
Next, in step S524, if the voice recognition failure signal is output, that is, when the navigation
device 61 fails in voice recognition, step S524 becomes YES and the process proceeds to step
S525.
Then, if the fan voltage BLW determined in step S523 exceeds 5.0 V, step S525 becomes YES and
the process proceeds to step S526, and in step S526, control is performed to further reduce the
air flow rate.
[0083]
That is, in step S526, the blower voltage BLW is calculated according to the difference ΔT (ΔT =
Tr−Tset) between the inside air temperature Tr and the set temperature Tset. More specifically,
as shown in the map of step S526 in FIG. 4, when the temperature difference ΔT is 10 ° C. or
more, the blower voltage BLW is set to 6.75 V and the temperature difference ΔT is between 10
° C. and 0 ° C. In this case, the fan voltage BLW is gradually decreased, and when the
temperature difference ΔT is 0 ° C., the fan voltage BLW is set to 5.5V. Then, in step S526, of
the fan voltage BLW determined based on TAO and the fan voltage BLW determined based on
the temperature difference ΔT in the map of step S526 in FIG. Decide as.
[0084]
The above steps S 524 to S 526 correspond to means and procedures for further reducing the air
flow when the speech recognition apparatus fails in speech recognition.
[0085]
In the present embodiment, although the air flow rate is reduced at the time of voice recognition
operation, since the air flow rate is further reduced when voice recognition fails, the voice
recognition rate can be improved.
[0086]
The audio volume of the audio device 62 (see FIG. 1) may be reduced at the time of speech
recognition operation, and the audio volume may be further reduced if speech recognition still
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fails.
[0087]
Third Embodiment In this embodiment, the air blowing amount during a call is corrected
according to the size of the other party's voice.
Therefore, in the present embodiment, a call volume signal representing the call volume of the
other party is output from the car phone 60 (see FIG. 1), and the call volume signal is input to the
control device 30 (see FIG. 1). There is.
Further, the control process of FIG. 3 of the first embodiment is changed as shown in FIG.
The other points are the same as in the first embodiment.
[0088]
In FIG. 5, if a call signal is output, that is, during a call, step S531 becomes YES and the process
proceeds to step S532. In step S532, the blower voltage BLW is calculated according to the other
party's call volume. More specifically, as shown in the map of step S532 in FIG. 5, the blower
voltage BLW is set to 7.25 V when the call volume is high, and the blower voltage BLW is
gradually reduced while the call volume is high to low. When the volume is small, the blower
voltage BLW is set to 5.0V. Then, in step S532, the lower one of fan voltage BLW determined
based on TAO and fan voltage BLW determined based on the call volume in the map of step S532
in FIG. 5 is used as fan voltage BLW. decide.
[0089]
The above steps S531 and S532 correspond to a means and procedure for reducing the air flow
rate when the call is started, and a means and procedure for correcting the reduction rate of the
air flow rate according to the call volume.
[0090]
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In the present embodiment, by setting the air flow rate during a call to a level according to the
size of the other party's voice, it is possible to ensure ease of listening to a call while minimizing a
decrease in warmth.
[0091]
Note that the audio volume of the audio device 62 (see FIG. 1) during a call may be set to a level
according to the size of the voice of the other party to ensure the ease of hearing the call.
[0092]
(Fourth Embodiment) In the present embodiment, when the passenger performs an operation to
increase the air flow during a call or voice recognition operation, the actual air flow increase is
greater than the air flow increase desired by the occupant. It is intended to reduce.
Therefore, in the present embodiment, the control process of FIG. 3 of the first embodiment is
changed as shown in FIG.
The other points are the same as in the first embodiment.
[0093]
In FIG. 6, in step S541, it is determined whether a call signal or voice recognition start signal is
output. If at least one signal is output, step S541 becomes YES and the process proceeds to step
S542.
In step S542, when the blower voltage BLW determined based on TAO exceeds 6.25 V, it is
determined that there is a possibility that the call or voice recognition operation may be
inhibited, step S542 becomes YES, and the process proceeds to step S543.
[0094]
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In step S543, the fan voltage BLW is calculated according to the difference ΔT (ΔT = Tr−Tset)
between the inside air temperature Tr and the set temperature Tset. More specifically, as shown
in the map of step S543 in FIG. 6, when the temperature difference ΔT is 10 ° C. or more, the
blower voltage BLW is set to 8.0 V, and the temperature difference ΔT is from 10 ° C. to 0 ° C.
The fan voltage BLW is gradually decreased, and when the temperature difference ΔT is 0 ° C.,
the fan voltage BLW is set to 6.25V. Then, in step S543, of the fan voltage BLW determined
based on TAO and the fan voltage BLW determined based on the temperature difference ΔT in
the map of step S543 in FIG. Decide as.
[0095]
Next, the process proceeds from step S543 to step S544, where it is determined whether or not a
voice recognition start signal is output. If the signal is output, step S544 is YES and the process
proceeds to step S545. In step S545, it is determined by the air volume switch 40 (see FIG. 1)
whether or not the occupant has manually operated the air volume change operation. If there is
an air volume change operation, step S545 becomes YES and the process proceeds to step S546.
[0096]
In step S546, if the change operation is to increase the air volume, the display 42 (see FIG. 1)
displays the level of the air volume manually set by the occupant, and the blower voltage BLW is
determined in step S543. Leave the blower voltage BLW.
[0097]
On the other hand, if step S544 is NO, that is, if a call is in progress, the process proceeds to step
S547, it is determined by the air volume switch 40 whether or not the occupant has manually
operated the air volume change operation. The process proceeds to step S548.
In step S548, the blower voltage BLW is changed by 0.25 V each time the air volume switch 40 is
operated.
[0098]
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The process proceeds from step S546 or step S548 to step S549, and when the call signal and
the voice recognition start signal are not output together, step S549 becomes YES and the
process proceeds to step S550. When step S549 is NO, the process returns to step S543, and the
processes of steps S543 to S549 are repeated.
[0099]
In step S550, it is determined whether or not a manual air volume change operation has been
performed during the processing of steps S543 to S549. Then, if the air volume change operation
has not been performed, step S550 becomes NO, and the process proceeds to step S551, and
returns to the fan voltage BLW before the call or the voice recognition operation is started. That
is, it returns to normal air conditioning control.
[0100]
On the other hand, if step S550 is YES, the process proceeds to step S552, and the blower
voltage BLW corresponding to the level of the air flow rate displayed on the display 42 is set.
[0101]
If step S541 is NO, that is, if it is not in a call or voice recognition operation, the process proceeds
to step S553, the air volume switch 40 determines whether the occupant has manually operated
the air volume change operation, and the air volume change operation is performed. If there is,
step S553 becomes YES and the process proceeds to step S554.
In step S554, the blower voltage BLW is changed by 1.0 V each time the air volume switch 40 is
operated.
[0102]
In this embodiment, when the air volume switching switch 40 is operated once, the blower
voltage BLW is changed by 1.0 V every time the air volume switching switch 40 is operated,
while the air volume switching switch 40 is set to 1 The blower voltage BLW is changed by 0.25
V each time the operation is performed, and the blower voltage BLW is not changed when there
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is a change operation to increase the air volume during the voice recognition operation. That is,
when the occupant performs an operation to increase the air flow during a call or voice
recognition operation, the actual increase in air flow is reduced or the air flow is increased more
than the air flow increase desired by the occupant. Because it is prohibited, it reduces the extent
to which it inhibits speech and speech recognition.
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