JP2833082B2 - Air conditioning control device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an air conditioner, and more particularly to an air conditioner suitable for automatically controlling an air condition in an air-conditioned space such as a room.

(Prior Art) Conventionally, for example, in a vehicle air conditioning control device,
Usually, environmental physical quantities such as the temperature inside the vehicle compartment, the outside air temperature, and the amount of solar radiation are detected, and the temperature inside the vehicle compartment is controlled to a desired temperature according to the detection result.

(Problems to be Solved by the Invention) In such a configuration, the temperature sensation of the occupant in the vehicle cabin is determined not only by the environmental physical quantity described above, but also by the occupant's clothes, the amount of exercise before riding, the thermal history, etc. Changes every moment. For example, if the temperature in the cabin is controlled to be equal to or lower than a desired temperature during the cooling control of the cabin, even if the occupant feels physiologically hot, the temperature in the cabin is further controlled. Therefore, a cooling effect that can eliminate the heat felt by the occupants cannot be secured. On the other hand, even when the occupant feels cold physiologically, similarly, it is not possible to obtain an air-conditioning effect capable of eliminating the cold felt by the occupant.

In response to this, it is conceivable to reset the desired temperature to an appropriate temperature in accordance with the temperature sensation of the occupant,
It is troublesome to reset a desired temperature every time the temperature sensation of the occupant changes. Further, as in an air conditioner disclosed in JP-A-63-99449, a transmitter is mounted on the wrist of an occupant, and a skin temperature sensor is built in the transmitter and the occupant is controlled by the skin temperature sensor. Detects the skin temperature of the wrist, arranges the receiver in the appropriate place in the vehicle cabin, and when the temperature sensation changes, the occupant transmits the detected skin temperature of the skin temperature sensor from the transmitter using the transmitter. It is also conceivable to automatically control the temperature in the vehicle interior appropriately in accordance with the skin temperature received by the receiver. However, even with such a configuration, the transmission operation of the transmitter is indispensable requirement every time the occupant's temperature sensation changes, which is troublesome.

To deal with this, for example, as disclosed in Japanese Patent Application Laid-Open No. 57-37642, a skin temperature related to the occupant's feeling of comfort is detected in a non-contact manner by an infrared sensor, and according to the detected skin temperature. In some cases, the temperature in the passenger compartment is controlled to a desired temperature, but high accuracy cannot be expected in the detection result due to the inherent properties of the above-described infrared sensor. In such a case, it is conceivable to directly detect the occupant's skin temperature with a contact-type temperature sensor.However, since the temperature sensor is directly attached to the occupant's skin with a tape or the like, it is physically uncomfortable for the occupant. Will be given.

Therefore, the present invention, in order to deal with the above,
In the air-conditioning control device, the above-mentioned uncomfortable feeling is given to a person in the air-conditioned space as little as possible,
An object of the present invention is to appropriately perform air conditioning control based on a human body temperature control function.

(Means for Solving the Problems) In order to solve the above problems, as shown in FIG. 1A, the configuration of the present invention is to optically detect a pulse wave of a person in the space to be air-conditioned through its earlobe and to measure the pulse wave. A pulse wave detecting means 1 for generating a signal, wherein the amplitude of the pulse wave signal is predetermined so as to sequentially increase with a change from a warm feeling of cold to a warm feeling of hot through insensitivity among human warm feelings. A thermal sensation determining means 2 for determining the thermal sensation in accordance with the amplitude of the pulse wave signal based on the thermal sensation-pulse wave amplitude characteristic; and a difference between the determined thermal sensation and no sensation on the thermal sensation-pulse wave amplitude characteristic. A temperature difference output signal generating means 3 for generating a temperature difference output signal so as to reduce the temperature, and a temperature controlling the temperature in the conditioned space to a value corresponding to the temperature sensation according to the temperature difference output signal. The control means 4 is provided.

(Effects) In the present invention configured as described above, as described above, the warm feeling-pulse wave amplitude characteristic is such that the amplitude of the pulse wave signal is hot from a cold feeling among human warm feelings through a senseless feeling. It is determined in advance so as to increase sequentially with the change to the warm feeling.

Then, the thermal sensation determining means 2 determines the human thermal sensation in accordance with the amplitude of the pulse wave signal from the pulse wave detecting means 1 based on the thermal sensation-pulse wave amplitude characteristics determined as described above.

Then, the thermal sensation output signal generating means 3 generates a thermal sensation output signal so as to reduce the difference between the determined thermal sensation and the sensation on the thermal sensation-pulse wave characteristic, and the temperature control means 4 And controlling the temperature in the space to be conditioned to a value corresponding to the insensitivity in accordance with the temperature difference output signal.

That is, based on the predetermined temperature sensation-pulse wave amplitude characteristic as described above, the temperature sensation of the person is determined in accordance with the amplitude of the pulse wave signal from the pulse wave detection means, and the determined temperature sensation and the temperature sensation-pulse are determined. The temperature in the conditioned space is controlled to a value corresponding to the insensitivity based on a temperature difference output signal that reduces the difference from insensitivity in wave characteristics.

This makes it possible to realize optimal air-conditioning control with no feeling in consideration of human warmth. As a result, the temperature in the air-conditioned space can be matched to a comfortable temperature sensation of a human, despite the fluctuations in various environmental physical quantities inside and outside the air-conditioned space, and the fluctuations in the amount of clothing and activity of a human. .

Further, since the detection by the pulse wave detecting means 1 is performed optically through the earlobe of a human, there is no particular feeling of strangeness for the human.

In order to solve the above problems, the configuration of the present invention
As shown by a solid line in 1B, a pulse wave detecting means 1 for optically detecting a pulse wave of a person in the space to be air-conditioned through its earlobe and generating a pulse wave signal, and responding to the insensitivity of the human sense of warmth Amplitude determining means 2a for determining whether or not the amplitude of the pulse wave signal belongs to a predetermined amplitude range of the pulse wave signal which is determined in advance, based on the determination that the amplitude does not belong to the amplitude determining means 2a An output signal generating means 3a for generating an output signal so that the amplitude of the pulse wave signal belongs to the predetermined amplitude range, and stopping the generation of the output signal based on the determination that the amplitude signal belongs to the amplitude determining means 2a. Temperature control means for controlling the temperature in the space to be air-conditioned to a value corresponding to the insensitivity in accordance with the output signal.

(Effects) In the present invention configured as described above, the predetermined amplitude range of the pulse wave signal is determined in advance so as to correspond to the insensitivity of the human sense of warmth, and the pulse wave signal from the pulse wave detecting means 1 is determined. The amplitude determining means determines that the amplitude of the signal does not belong to the predetermined amplitude range.
2a, the output signal generating means 3a generates an output signal so that the amplitude of the pulse wave signal falls within the predetermined amplitude range.

Then, in response to the output signal, the temperature control means 4 controls the temperature in the conditioned space to a value corresponding to the insensitivity.

Next, when it is judged by the amplitude judging means 2a that it belongs, the output signal generating means 3a stops generating the output signal, and the temperature control means 4 maintains the temperature control as it is.

As described above, by effectively utilizing the predetermined amplitude range of the pulse wave signal determined in advance as described above, by controlling the temperature in the air-conditioned space to a value corresponding to the insensitivity, the temperature of the air-conditioned space is controlled. The temperature in the space to be air-conditioned can be controlled to match the comfortable temperature sensation of the human being despite the fluctuations in various environmental physical quantities inside and outside the air-conditioned space, and the fluctuations in the amount of clothing and activity of the human.

Further, since the detection by the pulse wave detecting means 1 is performed optically through the earlobe of a human, there is no particular feeling of strangeness for the human.

Here, as shown by a two-dot chain line in FIG. 1B, a human is provided with changing means 5 for changing the predetermined amplitude range by an operation thereof, and the amplitude judging means 2a is configured to change the amplitude of the pulse wave signal by changing the amplitude.
In the case where it is determined whether or not the temperature falls within the change amplitude range, the above-described temperature control to the insensitivity of the human sensation can be realized by the control to the insensitivity inherent to the human. .

In solving the above-mentioned problems, the configuration of the present invention
As shown in FIG. 1C, a pulse wave detecting means 1 for optically detecting a pulse wave of a person in the space to be air-conditioned through its earlobe to generate a pulse wave signal, and the amplitude of the pulse wave signal is a human sense of warmth. The warm feeling is determined in accordance with the amplitude of the pulse wave signal based on a predetermined warm feeling-pulse wave amplitude characteristic that is sequentially increased with a change from a warm feeling of cold to a warm feeling of hot through insensitivity. The thermal sensation determining means 2 determines the environmental physical quantity in accordance with the determined thermal sensation based on an environmental physical quantity-thermal sensation characteristic indicating a predetermined relationship between the environmental physical quantity of the air-conditioned space and the thermal sensation, and converts the environmental physical quantity into a conversion environment. A conversion environment physical quantity setting means 6 for setting a physical quantity, and a required outlet temperature of an airflow from the air outlet into the air conditioning space is determined according to a desired temperature in the air-conditioned space and the converted environment physical quantity. Required outlet temperature determination means 7
And a control means 8 for controlling the air flow so that the outlet temperature thereof becomes the required outlet temperature.

(Function / Effect) By configuring the present invention as described above, the amplitude of the pulse wave signal is sequentially increased in accordance with a change from a warm feeling of cold to a warm feeling of hot after passing through insensitivity among human warm feelings. Based on a predetermined temperature-pulse wave amplitude characteristic,
Determines the sense of warmth according to the amplitude of the pulse wave signal from the pulse wave detecting means 1.

Then, based on the environmental physical quantity-thermal sensation characteristic representing the relationship between the environmental physical quantity of the space to be conditioned and the thermal sensation, the converted environmental physical quantity setting means 6 determines the environmental physical quantity in accordance with the determined thermal sensation. Is set as the conversion environment physical quantity.

Then, the required outlet temperature determining means 7 determines a required outlet temperature of the airflow from the outlet into the air-conditioned space according to the desired temperature in the air-conditioned space and the converted environmental physical quantity, The control means 8 controls the air flow so that the outlet temperature thereof becomes the required outlet temperature.

In other words, instead of the conventional outlet temperature control based on a desired temperature and an environmental physical quantity as described above, as described above, the amplitude of the pulse wave signal is said to be hot from a feeling of being cold to a feeling of being cold among human feelings. A predetermined thermal sensation-pulse wave amplitude characteristic that is sequentially increased with a change to the thermal sensation, and an environmental physical quantity-thermal sensation characteristic representing a predetermined relationship between the environmental physical quantity of the air-conditioned space and the thermal sensation. By using the thermal sensation, the environmental physical quantity is determined from the thermal sensation characteristic based on the thermal sensation determined based on the thermal sensation-pulse wave amplitude characteristic. Control the outlet temperature.

This makes it possible to realize air conditioning control that takes into account not only environmental physical quantities but also human temperature sensation, and as a result, it is possible to perform temperature control that matches human comfortable temperature sensation.

Further, since the detection by the pulse wave detecting means 1 is performed optically through the earlobe of a human, there is no particular feeling of strangeness for the human.

(Embodiment) Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 2 shows an example in which the present invention is applied to a vehicle air conditioning controller. The air-conditioning control device includes an air duct 10, and an inlet 10a is provided in the air duct 10.
An internal / external air switching damper 11, a blower 12, an evaporator 13, an air mix damper 14, a heater core 15, and an air outlet switching damper 16 are arranged in this order from the air outlet 10b into the compartment 20 of the vehicle. The blower 12 introduces airflow into the air duct 10 through the inside / outside air switching damper 11 and
3. The air is blown into the passenger compartment 20 through the air mix damper 14, the heater core 15, and the outlet switching damper 16. Evaporator 13
Cools the airflow from blower 12. The air mix damper 14 allows the air flow from the evaporator 13 to partially flow into the heater core 15 and allows the remaining air flow to flow directly to the outlet switching damper 16 in accordance with the actual opening degree θ. In such a case, when the opening degree θ is minimum, the flow rate of air flowing into the heater core 15 is minimized. The heater core 15 heats the inflow airflow and causes the airflow to flow toward the outlet switching damper 16.

Next, the electric circuit configuration of the air-conditioning control device will be described. The operation switch 30 is operated when control by the air-conditioning control device is required, and generates an operation signal. The heart rate sensor 40 is, as shown in FIGS. 2 and 3, a clip 41 made of a black material sandwiching the earlobe M of the driver of the vehicle.
This clip 41 has two clip pieces 41
a, 41b are gripped from the outside and the coil spring 42
When pressed against the two clips 41a, 4 around the shaft 41c
Each tip of 1b is tilted outward to release the earlobe M from being pinched. On the other hand, the clip 41 includes both clip pieces 41a, 41
When the gripping pressure on b is released, the tip of each of the clip pieces 41a and 41b is tilted inward about the shaft 41c by the action of the coil spring 42 so as to clamp the earlobe M.

The heart rate sensor 40 includes a photo reflector 43 (P2826 manufactured by Hamamatsu Photonics KK).
3 is supported in parallel with the bottom wall of the concave portion of the clip piece 41a by an appropriate means through the printed circuit board 44 in the inner concave portion. The photoreflector 43 is formed as a single chip by an IC so as to incorporate a light emitting diode 43a and a phototransistor 43b (see FIG. 2).

The spacer 45 is formed in the shape of a square ring plate from a black foam material, and the spacer 45 is fitted with the photoreflector 43 in its hollow portion so that the clip piece 41
It is fixed to the open end of the recess of a. This spacer 45
Has a greater plate thickness than the photo reflector 43 and has a clip
When the earlobe M is sandwiched by 41, it has a function of contracting in the thickness direction of the earlobe M to make the light receiving / emitting surface of the photoreflector 43 uniformly contact the surface of the earlobe M. In the heart rate sensor 40 configured as described above, when the light emitting diode 43a emits light due to conduction, the light from the light emitting diode 43a enters the earlobe M, and the blood flow in the earlobe M (from the surface of the earlobe M to the deep portion). 2 mm), and the reflected light is incident on the phototransistor 43b, is photoelectrically converted, and is generated as a pulse wave signal from the phototransistor 43b. In such a case, the amplitude V _PP of the pulse wave signal is
This corresponds to the amount of light received by the phototransistor 43b, that is, the amount of change in blood flow in the earlobe M. FIG. 4 exemplifies the waveform of the pulse wave signal.

Here, the grounds for employing the heart rate sensor 40 in the present embodiment will be described. The amount of change in blood flow in the earlobe of each subject when each of the environmental temperatures of a large number of subjects is variously changed is detected as a pulse wave signal by the heart rate sensor 40, and the time of each of these detections is determined. Each subject is notified of the temperature sensation (hereinafter, referred to as warmth) such as “cold” or “hot” of each subject, and the pulse wave amplitude (ie, the amplitude of the pulse wave signal) of each subject is reported. When the relationship between (V _PP ) and temperature was examined, a characteristic curve L was obtained as shown in FIG. According to this, when the feelings of many subjects are classified into seven types,
It was confirmed that the amplitude _VPP increased gradually from "cold" to "hot".

In such a case, in the curve L, “no feeling” means a feeling of warmness that is neither cold nor hot. That is, the uneven distribution of the temperature in the passenger compartment 20;
Even if the effects of solar radiation, changes in the occupants' clothes, changes in the occupants' activities, etc. occur in various ways, if the air conditioning is controlled so that the occupants' feeling of heat is in a "no-sensation" state, the optimal air conditioning condition for the occupants Can be realized. From this point of view, in controlling the air conditioning in the passenger compartment 20, the heart rate sensor 40 is employed in the present embodiment on the assumption that the characteristic curve L is used.

As shown in FIG. 7, the thermal sensation fine adjustment mechanism 50 and the thermal sensation storage mechanism 60 are provided on the instrument panel 20a in the vehicle interior 20.
As shown in the figure, each self-resetting type normally open type fine adjustment switch 51,5
2, 53 and a lamp 54. The fine adjustment switch 51 closes when the occupant's sense of warmth corresponds to "slightly hot" and generates a first fine adjustment signal by closing the pressing surface 51a. When the occupant feels comfortable, the fine adjustment switch 52 is closed by the pressing of the pressing surface 52a to generate a second fine adjustment signal.
The fine adjustment switch 53 closes when the occupant's sense of warmth is "slightly cold" and generates a third fine adjustment signal by closing the pressing surface 53a. The lamp 54 functions as lighting behind the pressing surfaces 51a, 52a, 53a of the fine adjustment switches 51 to 53 by lighting. Each of the pressing surfaces 51a to 53a is translucent, and the characters "somewhat hot", "comfortable" and "somewhat cold" are displayed on each of these pressing surfaces 51a to 53a. Also, the instrument panel 20 located immediately above each of the pressing surfaces 51a to 53a
The letter "temperature sense adjustment" is displayed in the part a.

As shown in FIG. 2 and FIG.
When the microcomputer 130 stores the first finely-adjusted temperature sensation value in the microcomputer 130 as described later, the memory switch 61 is configured by a push-down surface 61a. The closing operation generates a first storage command signal. On the other hand, the storage switch 62 closes and generates a second storage command signal by the pressing of the pressing surface 62a when the second finely controlled temperature sense value is stored in the microcomputer 130 as described later. In such a case, when one of the storage switches 61 and 62 is closed, the other is opened. The lamp 63 functions as lighting behind the pressing surfaces 61a and 62a of the storage switches 61 and 62 by lighting. Note that the pressing surfaces 61a and 62a are translucent. In addition, characters of "temperature sensation memory" are displayed on a portion of the instrument panel 20a located immediately above each of the pressing surfaces 61a and 62a.

The drive power supply 70 turns on the light emitting diode 43a of the photoreflector 40 in response to an operation signal from the operation switch 30. The amplifier 80 amplifies the pulse wave signal from the phototransistor 43b and generates an amplified signal. Peak hold circuit 90
Generates a maximum level hold signal and a minimum level hold signal by peak-halting the maximum level and the minimum level of the amplified signal from the amplifier 80, respectively. Subtractor 10
0 subtracts the level of the maximum level hold signal of the peak hold circuit 90 from the level of the maximum level hold signal from the peak hold circuit 90, and generates a result of the subtraction as a subtraction signal. The A / D converter 110 converts the subtraction signal from the subtractor 100 into a digital signal and generates a digital subtraction signal. The pulse generator 120 sequentially generates a synchronization pulse signal synchronized with the maximum level of the amplified signal from the amplifier 80 (that is, synchronized with the occupant's heartbeat).

The microcomputer 130 includes an operation switch 30, fine adjustment switches 51 to 53, storage switches 61 and 62, an AD converter 110, and a control switch 30 in accordance with the flowcharts shown in FIGS.
The main control program and the first and second interrupt control programs are executed in cooperation with the pulse generator 120. During this execution, the driving circuit 1 for the lamps 54, 63 and the blower 12 is operated.
Various arithmetic processes required for driving the drive mechanism 150 of the air mix damper 14 are performed. However, the main control program and the first and second interrupt control programs are stored in the ROM of the microcomputer 130 in advance. Note that the microcomputer 130 is supplied with power from the battery B when the ignition switch IG of the vehicle is closed.

In the present embodiment configured as described above, it is assumed that the vehicle is in a running state under the start of the engine when the ignition switch IG is closed. At this time, the microcomputer 130 is supplied with power from the battery B when the ignition switch IG is closed. Further, it is assumed that a heart rate sensor 40 is mounted on the earlobe M of the driver of the vehicle as shown in FIGS. In this state, when an operation signal is generated from the operation switch 30, the microcomputer 130 starts execution of the main control program in step 200 according to the flowchart of FIG. 8, and performs initialization processing in step 210. In step 220, a blower output signal for driving the blower 12 is generated.

Thus, when the drive circuit 140 drives the blower 12 in response to the blower output signal from the microcomputer 130,
The air flow is introduced into the air duct 10 through the inlet 10a by the blower 12, and is blown out from the outlet 10b through the inside / outside air switching damper 11, the evaporator 13, the air mix damper 14, the heater core 15, and the outlet switching damper 16. . Also,
When the light emitting diode 43a in the heart rate sensor 40 emits light by being driven by the drive power supply 70 in response to an operation signal from the operation switch 30, light from the light emitting diode 43a enters the earlobe M and is reflected by the blood flow. Incident on the phototransistor 43b. Therefore, the phototransistor 43b
Generates a pulse wave signal according to the change in the amount of received light.

Then, the amplifier 80 generates the pulse wave signal as an amplified signal, the peak hold circuit 90 generates the maximum level and the minimum level of the amplified signal as a maximum level hold signal and a minimum level hold signal, respectively, and the subtractor 100 A level difference between the two signals is generated as a subtraction signal, and the A / D converter 110 converts the subtraction signal into a digital subtraction signal. Further, the pulse generator 120 sequentially generates a synchronous pulse signal in synchronization with the maximum level of the amplified signal from the amplifier 80,
In response to these synchronization pulse signals sequentially, the microcomputer 130 repeatedly executes the interrupt of the first interrupt control program according to the flowchart of FIG. It is sequentially input value of digital subtraction signal as the pulse wave amplitude V _PP.

After the arithmetic processing in step 220 of the main control program as described above, the microcomputer 130
At 30, it compares determine the latest pulse wave amplitude V _PP at step 310 with a predetermined amplitude [Delta] V. However, the predetermined amplitude width ΔV is
In the present embodiment, it is determined as follows, and is stored in the ROM of the microcomputer 130 in advance. In the characteristic curve L, the pulse wave amplitude V _PP for the insensitive area has a width as shown in FIG. Therefore, the pulse wave amplitude V _PP on the characteristic curve L corresponding to the center of the insensitive region is set as the reference amplitude V _P0 (see FIG. 5), and each pulse corresponding to each of the two boundaries of the insensitive region. The wave amplitudes were ( _VP0 + α) and ( _VP0- β), and ΔV was determined so as to satisfy _VP0- β ≦ ΔV ≦ _VP0 + α. Note that α> 0 and β> 0.

If V _PP > V _P0 + α or V _PP <V _P0 −β holds, the microcomputer 130 proceeds to step 230
, Based on the judgment that V _PP does not belong to ΔV,
In step 231, each lamp 5 is turned off based on the disappearance of the first and second lighting signals necessary for lighting each of the lamps 54 and 63.
At step 232, the interruption by each of the fine adjustment switches 51 to 53 is prohibited, and at step 233, the difference between the pulse wave amplitude V _PP and the reference amplitude V _P0 at step 310 (V
_PP -V _P0 ) and step through the main control program
Proceed to 270.

In such a case, as shown in FIG. 5, for example, V _PP = V
_{If Pa} > V _P0 + α is satisfied, the warmth of the driver corresponds to “warm”. Therefore, the microcomputer
130 generates (V _Pa −V _P0 ) as a temperature difference signal. However, this temperature difference signal corresponds to a signal for reducing the opening of the air mix damper 14 (corresponding to the upward tilt of the air mix damper 14 in FIG. 2). On the other hand, the fifth
As shown in the figure, for example, if V _PP = V _Pb <V _P0 −β is satisfied, the driver's warm feeling corresponds to “cool”. Therefore, the microcomputer 130 _calculates (V _P0 −
V _Pb ) is generated as a temperature difference signal. However, this temperature difference signal corresponds to a signal for increasing the opening of the air mix damper 14.

When a temperature difference signal is generated from the microcomputer 130 in step 270 as described above, the driving mechanism 150
_{If PP} > V _P0 + α, the opening of the air mix damper 14 is reduced, while if V _PP <V _P0 −β, the opening of the air mix damper 14 is increased. Therefore, the outlet 10b
The temperature of the airflow blown into the vehicle compartment 20 from the air mix damper 14 decreases as the opening degree of the air mix damper 14 decreases, and increases as the opening degree increases. This means that the driver's feeling of warmth is automatically adjusted toward insensitivity.

In such a state, when the latest pulse wave amplitude V _PP in step 310 comes to belong to the predetermined amplitude width ΔV,
The microcomputer 130 determines "YES" in step 230.
In step 234, the first and second lighting signals are generated. Then, the lamp 54 is a microcomputer
Lights in response to the first lighting signal from 130 and illuminates the portion of the instrument panel 20a corresponding to the fine thermal sensation mechanism 50, while the lamp 63 lights in response to the second lighting signal from the microcomputer 130. Instrument panel
The portion corresponding to the warm feeling memory mechanism 60 of 20a is illuminated. As a result, the driver can adjust the warm feeling fine adjustment mechanism 50 and the warm feeling memory mechanism 60.
The user is visually informed that the operation is possible.

After the arithmetic processing in step 234, the microcomputer 130 permits the interruption by the fine adjustment switches 51 to 53 in step 235, and advances the main control program to step 240. If the first storage command signal is generated from the storage switch 61 of the thermal sensation storage mechanism 60 at this stage, the microcomputer 130 determines “YES” in step 240, and determines in step 250 that the operation flag It is determined as “NO” based on F = 0 (it has been initialized in step 210), and in step 251, (V _PP −V _P0 ) is calculated in the same manner as in step 233. Generated as a temperature difference signal. Thus, the opening of the air mix damper 14 is adjusted in the same manner as described above. On the other hand, if the second storage command signal is generated from the storage switch 62 of the thermal sensation storage mechanism 60 after the arithmetic processing in step 235 as described above, the microcomputer 130 determines “NO” in step 240, In step 260, it is determined “NO” based on F = 0, and in step 261, (V _PP −V _P0 ) is calculated as in step 233, and the main control program proceeds to step 270 and subsequent steps.

In such a state, if the driver desires a temperature sensation state that suits his / her preference with respect to the temperature adjustment in the passenger compartment 20a at this stage, the driver operates the temperature sensation fine adjustment mechanism 50. That is, when the driver feels "slightly hot", "slightly cold" or "comfortable", the first, third or second fine adjustment signal is generated from the fine adjustment switch 51, 53 or 52. In this embodiment, such adjustment is considered for the following reason. The relationship between the pulse wave amplitude _VPP and the warm feeling specified by the above-described characteristic curve L is an average of the report results of many subjects. Therefore, the state of insensitivity specified by the characteristic curve L may be somewhat different depending on the subject. To illustrate such a thing, the fifth
As shown in FIG. 6 and FIG. 6, V _PP =
In the case of the portion based on V _P0 , the insensitive median value varies as specified by the curve La. For this reason, fine adjustment by the thermal sensation fine adjustment mechanism 50 is employed as described above.

On the premise of the above, when the driver is currently in a warm feeling state of "slightly hot", the first fine adjustment signal is generated from the fine adjustment switch 51 under the generation of the first storage command signal. If you do, microcomputer 130
Starts executing the second interrupt control program in step 400a according to the flowchart of FIG.
In the above, based on the generation of the above-mentioned first fine adjustment signal, "slightly hot"
Step 2 in the second interrupt control program
Proceed to 420. Then, the microcomputer 130 subtracts the fine adjustment amplitude δ (> 0) from the reference amplitude V _PO, and the result of the subtraction (V _PO −δ) is determined based on the determination of “YES” in step 240 by the driver. As the equivalent of the insensitivity inherent to
First fine control temperature value (hereinafter referred to as first fine control temperature value V _difa )
And set in step 450. However, the fine adjustment amplitude δ is stored in advance in the ROM of the microcomputer 130 together with the reference amplitude _VPO . Note that the microcomputer 130 temporarily stores the first fine adjustment temperature sense value V _difa in step 450 and sets the operation flag F = 1 in step 460.

Thereafter, when the main control program proceeds to step 250 again, the microcomputer 130 determines “YES” based on F = 1 in step 460, and in step 252, the latest pulse wave amplitude V _PP in step 310. _Is subtracted from the first fine adjustment temperature sense value V _difa in step 450, and the subtraction result (V
_PP -V _difa ) is generated as a temperature difference signal. Then, in response to the temperature difference signal from the microcomputer 130, the drive mechanism 150 sets the opening of the air mix damper 14 to (V _PP
−V _difa ). As a result, the amount of airflow heated by the heat core 15 is reduced, and
Reduce the temperature of the air flow into the interior. Thereby, the feeling of "slightly hot" felt by the driver after the first determination of "YES" in step 230 can be finely adjusted, and a state of insensitivity unique to the driver can be achieved.

After such temperature control, if the driver feels "slightly hot" and generates a third fine control signal from the fine control switch 53 based on the determination of "YES" in both steps 230 and 240, the microcomputer 130 causes Step 410 of the second interrupt control program
In step 430, it is determined that the temperature is slightly hot. In step 430, the fine adjustment amplitude δ is added to the reference amplitude V _PO , and the addition result (V _PO +
δ) is assumed to correspond to the insensitivity inherent to the driver, based on the determination of “YES” in step 240, and
_Is updated to the first fine adjustment temperature sense value V _difa at step 460 and F
= 1.

Thereafter, the microcomputer 130 determines “YES” based on F = 1 in step 250, and in step 252, based on the latest pulse wave amplitude V _PP in step 310, _returns to step 450.
_Is subtracted, and the subtraction result (V _PP -V _difa ) is generated as a temperature difference signal. Then, in response to the same temperature difference signal, the drive mechanism 150 changes the opening of the air mix damper 14 to (V _PP −V _difa = V _PP −V _PO
−δ). For this reason, the amount of the airflow heated by the heater core 15 increases, and the temperature at which the airflow blows into the vehicle interior 20 increases. As a result, as described above, the driver's feeling of "slightly cold" is finely adjusted, and a state of insensitivity unique to the driver can be achieved.

Further, when the driver of the vehicle is replaced with another person, after determining NO in step 240 as described above, the first fine adjustment signal is generated from the fine adjustment switch 51, or the first fine adjustment signal is generated from the fine adjustment switch 53. Under the generation of the third fine adjustment signal, the microcomputer 130 _calculates the second fine adjustment feeling value V _difb as (V _P0 −δ) or (V _P0 + δ) in step 420 or 430. , At step 450 the same V _difa
Is temporarily stored, and at step 460, F = 1 is set. Therefore, if "YES" is determined in step 20, the microcomputer 130 in step 262
_PP- V _difb ) is calculated, and the calculation result is generated as a temperature difference signal in step 270. This allows step 252
In the same manner as after the arithmetic processing, fine adjustment can be made to the insensitive state inherent to the substitute. The fine adjustment switch 52
, The microcomputer 130 determines in step 410 that it is comfortable, and in step 47
At 0, V _difa = V _PP or V _difa = V _PP is set.

As described above, the characteristic curve L is effectively used under the employment of the heart rate sensor 40 to make the pulse wave amplitude V _{PP a} predetermined amplitude width Δ
If it does not belong to V, the temperature in the vehicle interior 20 is controlled to a value corresponding to the insensitive state on the characteristic curve L by controlling the opening of the air mix damper 14 so that V _PP belongs to ΔV. Therefore, despite the temperature uneven distribution in the passenger compartment 20, the variation in the amount of solar radiation, the amount of clothing worn by the driver, the variation in the amount of activity, etc.
The temperature in the vehicle cabin 20 can be appropriately controlled to a temperature corresponding to the driver's insensitivity state (specified by the characteristic curve L) in the vehicle cabin 20. In such a case, the heart rate sensor 40 may be worn on the earlobe of the driver or the like, so that these persons do not feel particularly uncomfortable.

In addition, by using the thermal sensation fine adjustment mechanism 50 and the thermal sensation storage mechanism 60 under the above-described temperature control, the control temperature can be further finely adjusted to a value corresponding to a state of insensitivity inherent to the driver or the like. , It is possible to accurately realize a silent state that matches the taste of each occupant.

The present invention is not limited to the air mix damper 14, but may be applied to, for example, drive control of the blower 12.

Further, in the above-described embodiment, on the assumption that the determination in step 230 is made, the vehicle
Although the temperature inside the motor 20 is controlled, instead of this, a predetermined driver's temperature sensation characteristic (microcomputer 130
Determination of the thermal sensation based on the pulse wave amplitude V _PP obtained from stored) in ROM, and a difference between the insensitive obtained from the temperature sensitive properties,
The temperature in the passenger compartment 20 may be controlled so as to reduce this.

Next, another embodiment of the present invention will be described. In this embodiment, an electric circuit configuration as shown in FIG. 11 is employed in place of the electric circuit configuration of FIG. 2 described in the above embodiment. What has been done is its structural features. Temperature setting device 40a
Generates a desired set temperature in the cabin of the vehicle as a set temperature signal by the setting operation. Internal temperature sensor 40b
Detects the actual temperature in the vehicle compartment and generates it as an internal temperature detection signal. The outside air temperature sensor 40c detects the actual temperature of the outside air of the vehicle and generates it as an outside air temperature detection signal. The solar radiation sensor 40d detects the actual amount of sunlight that enters the vehicle interior and generates it as a solar radiation amount detection signal. The opening degree sensor 40e detects the actual opening degree θ of the air mix damper 14 and generates it as an opening degree detection signal. The A / D converter 110a includes a set temperature signal from the temperature setter 40a, an inside air temperature detection signal from the inside air temperature sensor 40b, an outside air temperature detection signal from the outside air temperature sensor 40c, an insolation detection signal from the insolation sensor 40d, and Digitally converts the opening detection signal from the opening sensor 40e into a digital set temperature signal,
It is generated as a digital inside temperature signal, a digital outside temperature signal, a digital solar radiation signal and a digital opening signal, respectively.

According to the flowchart shown in FIG. 12 and the flowchart of FIG. 9 described in the above embodiment, the microcomputer 130a includes the operation switch 30, each of the AD converters 110 and 110a, and the pulse generator 120 (see the above embodiment). The main control program (hereinafter, referred to as a second main control program) and the first interrupt control program are executed in cooperation with each other. During this execution, the driving of the driving circuit 140 and the driving mechanism 150 described in the above embodiment is performed. Performs various arithmetic processing required for. However, the second main control program and the first interrupt control program are stored in the ROM of the microcomputer 130a in advance. The microcomputer 130a is supplied with power from the battery B when the ignition switch IG is closed. Other configurations are the same as those of the above-described embodiment except that the thermal sensation fine adjustment mechanism 50 and the thermal sensation storage mechanism 60 are omitted.

In another embodiment configured as follows, it is assumed that the vehicle is in a running state under the start of the engine accompanying the closing of an ignition switch IG. At this time, the microcomputer 130a is supplied with power from the battery B when the ignition switch IG is closed. In this state, when an operation signal is generated from the operation switch 30, the microcomputer 130a starts execution of the second main control program in step 500 according to the flowchart of FIG. 12, and performs initialization processing in step 510. And
In step 520, it is determined whether or not there is a device for the heart rate sensor 40. At this stage, if it is assumed that the heart rate sensor 40 is attached to the earlobe M of the driver of the vehicle in the same manner as in the embodiment, the microcomputer 130a sequentially starts from the pulse generator 120 in the same manner as in the embodiment. The interrupt execution of the first interrupt control program is repeated in response to each of the generated synchronous pulse signals.
It is sequentially input value of the digital subtraction signal from the pulse wave amplitude V _PP.

Then, the microcomputer 130a executes step 52
At 0, based on the pulse wave amplitude V _PP in step 310, based on the judgment of the already mounted heartbeat sensor 40 "YES"
In step 520a, each pulse wave amplitude V _PP in step 310 is sequentially input for 100 beats, and in step 520b, the average value of the pulse wave amplitude V _{PP for} the same 100 beats is determined. Set to the wave amplitude average value V _pave . Then, the microcomputer 130a determines in step 520c that the pulse wave amplitude average value V in step 520b is based on the characteristic curve La (see FIG. 13) representing the relationship between the warm feeling and the pulse wave amplitude average value _Vpave .
_The warm feeling (hereinafter, referred to as warm feeling Tf) is determined according to the _pave .

However, the above-described characteristic curve La, the basis of said characteristic curve L (see FIG. 5) in Example, the average value of the pulse wave amplitude V _PP consecutive per 100 beats, i.e., each pulse It is obtained from the relationship between the wave amplitude average value V _pave and the thermal sensation Tf, and is stored in the ROM of the microcomputer 130a in advance. In such a case, the warm feeling Tf = + 3, + 2, + 1,0, −1, −2, −3 is “hot”, “warm”, “slightly warm”, “insensitive”, “slightly cool”, “cool” "And" cold. "

When the determination of the thermal sensation Tf is completed as described above, the microcomputer 130a sets the A-D
The values of the digital set temperature signal, digital internal temperature signal, digital external temperature signal, and digital solar radiation signal from the converter 110a are set as the set temperature Ts, the internal temperature Tr, the external temperature Tam, and the solar radiation S.
The second main control program is input as T, and proceeds to step 540. If the warm feeling Tf in step 520f is not "0", the microcomputer 130a
Is determined to be "NO" in step 540.

Next, the warmth Tf at step 520c and the step 530
In step 550, the microcomputer 130a determines whether or not the coordinates (Tf, Tr) determined by the internal temperature Tr in the above are within the predetermined temperature sensation internal temperature coordinate range. However, the above-mentioned predetermined temperature sensation inside temperature coordinate range is determined as follows.
The correlation between the warm feeling Tf and the internal temperature Tr was confirmed by an experiment, and was obtained as a characteristic straight line Lb as shown in FIG. In such a case, the workload of one subject is reduced by about 1 MFT.
(A stable state in which the subject is seated) and the so-called standard state in which the subject's clothing is 0.5ClO (summer clothes state). In addition, it was also confirmed that the characteristic line Lb moves in parallel, for example, as the characteristic line Lbb in accordance with the work load of the subject and / or changes in clothing. This means that the thermal sensation fluctuates even when the internal temperature Tr does not change.

Further, when the variation allowable range of the characteristic straight line Lb in the standard state was examined in consideration of the variation by the subject, the coordinate range between each of the characteristic straight lines Lbu and Lbl was within the variation allowable range as shown in FIG. It was confirmed that it was equivalent. For this reason, the coordinate area between the characteristic straight lines Lbu and Lbl is stored in advance in the ROM of the microcomputer 130a as the above-mentioned predetermined temperature sensation inside temperature coordinate area.

Thus, at this stage, since the amount of work and the amount of clothes of the driver are large, the sense of temperature of the driver deviates from the predetermined temperature sense inside temperature coordinate area in relation to the inside temperature Tr in step 530, for example, If it is on the characteristic line Lbb, the microcomputer 130a determines in step 550 that "N
"O" is determined and the second main control program proceeds to step 550a.

Next, the microcomputer 130a executes step 55
At 0a, a characteristic straight line Lb corresponding to the thermal sensation Tf at step 520c
Is determined on the basis of the characteristic line Lb, and is set as the converted internal temperature Tro. In such a case, as understood from FIG. 14, when the internal temperature at the current stage is Tr = Tra, the converted internal temperature Tro = Trb is a conversion value from the internal temperature Tra. On the other hand, if the determination in step 540 or 550 is “YE
In the case of `` S '', the microcomputer 130a determines that the air conditioning is comfortable for the driver,
In step 550b, the internal temperature Tr in step 530 is set as it is to the converted internal temperature Tro. Note that the characteristic line Lb
Is stored in the ROM of the microcomputer 130a in advance.

After the arithmetic processing in step 550a or 550b as described above, the microcomputer 130a in step 560, based on the following relational expression (1), sets the set temperature Ts, the outside air temperature Tam and the amount of solar radiation ST in step 530, and in step 550a The required outlet temperature Tao is calculated according to the converted internal temperature Tro (or the converted internal temperature Tro in step 550b).

Tao = K ₁ · T _S -K ₂ · Tro -K ₃ · Tam-K ₄ · ST (1) However, in the relational expression (1), the required outlet temperature Tao
Is a required blowing temperature of the airflow at the outlet 10b of the air duct 10 to make the temperature in the passenger compartment 20 an appropriate value. Each of the codes K ₁ , K ₂ , K ₃ and K ₄ is a weighting coefficient.

Here, the grounds for employing the relational expression (1) in the present embodiment will be described. The conventional relational expression representing the required outlet temperature Tao 'is specified by the following relational expression (2).

Tao '= K ₁ · T _S -K' ₂ · Tr -K ₃ · Tam-K ₄ · ST (2) However, this relational expression (2) shows that the set temperature Ts, the internal temperature Tr, and the external temperature Tam The required outlet temperature Tao 'is calculated in relation to a so-called environmental physical quantity such as the solar radiation ST. However, in general, even if the environmental physical quantities in the cabin 20 are the same,
The warmth of the driver fluctuates from moment to moment due to differences in environmental conditions such as the amount of clothes, the amount of work, or the history of overheating before riding. Therefore, unless the required outlet temperature is determined in consideration of human factors such as the driver's feeling of warmth, the cabin 20
It is recognized that a comfortable air-conditioning environment for the driver is not realized even if the air condition inside, for example, the inside temperature is appropriate. Therefore, the relational expression (1) is adopted in place of the relational expression (2) and is stored in advance in the ROM of the microcomputer 130a. Note that in equation (2), code K _'2 represents a weighting factor.

When the second main control program proceeds from step 550a to step 560, the microcomputer 130
a is Ts, Tam, ST and step 55 based on the relational expression (1).
The required outlet temperature Tao is calculated according to Tro = Trb at 0a. This means that the required outlet temperature Tao is calculated in consideration of the difference in the inside air temperature between the two points Qb and Qa corresponding to the difference in the feeling of heat between the two points P and Qa in FIG. means. In addition, the second main control program executes step 550b from step 550b.
To proceed to 560, the microcomputer 130a calculates the required outlet temperature Tao according to Ts, Tam, ST and Tro = Tr in step 550b, based on the relational expression (1). This means that the required outlet temperature Tao is calculated in consideration of the internal temperature Tr in step 530 in relation to the driver's insensitive state.

After calculating the required outlet temperature Tao as described above, the microcomputer 130a calculates the characteristic curve Lc in step 570.
Based on (see FIG. 15), the air flow rate Q from the blower 12 is determined in relation to the required outlet temperature Tao in step 560. However, the characteristic curve Lc represents the relationship between the air flow rate Q and the required outlet temperature Tao, and the characteristic curve Lc is stored in the ROM of the microcomputer 130a in advance. In the characteristic curve Lc, the required outlet temperature Tao corresponding to the reference symbol N in FIG. 15 corresponds to a state where the driver is insensitive. Next, the microcomputer 130a executes step 57.
At 0a, the air flow rate Q in step 570 is generated as a blower output signal.

Further, the microcomputer 130a determines in step 580 based on the θ ₀ -Tao characteristic indicating a predetermined proportional relationship between the target opening degree θ _{0 of the} air mix damper 14 and the required outlet temperature Tao in step 580. It determines a target opening theta ₀ in accordance with the required outlet temperature Tao of, this target opening theta ₀ A-
In step 580a, a damper output signal required to reduce the difference from the value of the digital opening signal from the D converter 110a (hereinafter, referred to as opening θ) is generated. However, the θ ₀ -Tao characteristic is stored in the ROM of the microcomputer 130a in advance.

When a blower output signal and a damper output signal are generated from the microcomputer 130a as described above, the drive circuit 140 drives the blower 12 in response to the blower output signal and causes the blower 12 to send out an air flow with an air flow rate Q. . The drive mechanism 150 drives the air mix damper 14 in response to the damper output signal from the microcomputer 130a is tilted to the target opening theta _0. Then, the air flow from the blower 12 flows into the evaporator 13 with the air flow rate Q and is cooled, and the target opening θ of the air mix damper 14 is set.
₀ , a part of the cooling air flow from the evaporator 13 is heated by the heater core 15 and flows toward the outlet switching damper 16, and the remaining cooling air flow is directly supplied to the outlet switching damper.
16 and both flowing air flows are blown into the passenger compartment 20 with the air flow rate Q and the required outlet temperature Tao.

In such a case, if the air-conditioning state in the passenger compartment 20 is in a state requiring cooling, the required outlet temperature Tao becomes 25 ° C. in FIG.
More negative. On the other hand, if the air conditioning state in the passenger compartment 20 is in a state requiring heating, the required outlet temperature Tao is on the positive side of 55 ° C. in FIG. Therefore, each step 520-5
In the repetitive process of the execution of the second main control program passing through 80a, as the actual temperature in the cabin 20 approaches the set temperature, the required outlet temperature Tao increases toward the point N (see FIG. 15). As approaching, the air flow rate from the blower 12 decreases, and the opening of the air mix damper 14 changes.
In these conditions, step 540 or step 550 displays "YE
If "S" is determined, the driver determines that the vehicle is in the standard warm feeling state (see the characteristic lines Lb, Lbu, and Lbl in FIG. 14), and determines the relational expression based on Tro = Tr. By applying (1), the temperature Tr in the passenger compartment 20 is adjusted to the set temperature Ts according to only normal environmental physical quantities. Also, "NO" in step 220
Is determined, it is determined that the driver's thermal sensation Tf is not in the standard thermal sensation state, and the relational expression (1) based on the converted internal temperature Tro (≠ Tr) determined in step 550a. , The inside temperature Tr is adjusted to the set temperature Ts and the warm feeling Tf is adjusted insensitively. Thus, optimal air-conditioning control that also takes into account the driver's sense of warmth can be realized.

In addition, as described above, the second main control program
When proceeding to 520, the determination in this step 520 is "N
If `` O '', the microcomputer 130a determines in step 520d
In the same manner as in step 530, the set temperature Ts and the internal temperature T
r, the outside temperature Tam and the amount of solar radiation ST are input, and in step 560, the required outlet temperature Tao is determined by applying the relational expression (1) based on Tro = Tr, and the arithmetic processing after step 570 is performed.
Thereby, the internal air temperature control according to only the normal environmental physical quantity is achieved. In such a case, one of the arithmetic processing after step 520a and the arithmetic processing after step 520d can be selected depending on whether or not the heart rate sensor 40 is attached to the earlobe M.
There is also an advantage that the necessity of the air conditioning control including the feeling of warmth can be freely determined by the driver's intention.

In the other embodiment, the internal temperature Tr and the thermal sensation Tf
(See Fig. 14) to control the internal temperature taking into account the sense of warmth. However, the present invention is not limited to this. Similarly, as described above, the inside air temperature control may be performed in consideration of the feeling of warmth by utilizing the relationship between the temperature and the feeling of warmth.

Further, in the above other embodiment, although the pulse wave amplitude average value V _pave at step 520b to determine from 100 beats of pulse wave amplitude V _PP, not limited to this, the pulse wave amplitude average value V _pave The pulse wave amplitude number serving as the calculation reference for may be changed as needed.

Further, the present invention is not limited to the heart rate sensor 40, and may be implemented by employing, for example, a laser blood flow sensor, an impedance prestimo method, or the like.

In practicing the present invention, the present invention may be applied to various air-conditioning control devices without being limited to the vehicle air-conditioning control device.

In the implementation of the present invention, in the second main control program (see FIG. 12) described in the other embodiment, the mounting of the heart rate sensor 40 is set as the execution start condition in step 500, and both steps 520 and 520d are performed. If omitted, the
If the characteristic straight lines Lb, Lbu, and Lbl shown in FIG. 14 are stored in the microcomputer 130a, the calculation inside air temperature Tro can be determined based on the warm feeling, so that the inside air temperature sensor 40b can be omitted.

[Brief description of the drawings]

1A to 1C are views corresponding to the description of each claim in the claims, FIG. 2 is a block diagram showing an embodiment of the present invention, FIG. 3 is a sectional view of a heart rate sensor, FIG. Is an output waveform diagram of the sensor, FIG. 5 is a graph showing the relationship between the pulse wave amplitude and the sense of warmth, FIG. 6 is a partially enlarged view of the graph, and FIG.
FIGS. 8 to 10 are flow charts showing the operation of the microcomputer of FIG. 2, respectively.
FIG. 11 is a main part block diagram showing another embodiment of the present invention.
12 is a flowchart showing the operation of the microcomputer of FIG. 11 together with the flowchart of FIG. 9, FIG. 13 is a graph showing the relationship between the average value of the pulse wave amplitude and the feeling of warmth, and FIG. FIG. 15 is a graph showing the relationship between the air flow rate and the required outlet temperature. Description of symbols 10 …… Air duct, 12 …… Blower, 13 …… Evaporation, 14 …… Air mix damper, 15 …… Heater core, 20 …… Car cabin, 40 …… Heart rate sensor, 40a …… Temperature setting device , 40b …… Inner temperature sensor, 40c …… Outer air temperature sensor, 40d
... solar radiation sensor, 40e ... opening degree sensor, 50 ... thermal sensation fine adjustment mechanism, 60 ... thermal sensation memory mechanism, 130, 130a ... microcomputer.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-125243 (JP, A) JP-A-60-42530 (JP, A) JP-A-3-95348 (JP, A) Actually open 63-125 57452 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) F24F 11/02

Claims (4)

(57) [Claims] A pulse wave detecting means for optically detecting a pulse wave of a person in the space to be air-conditioned through an earlobe to generate a pulse wave signal; A temperature that determines the warmth in accordance with the amplitude of the pulse wave signal based on a predetermined warmth-pulse wave amplitude characteristic that is sequentially increased with a change from a warm feeling of cold to a warm feeling of hotness through insensitivity. Sensation determining means; a thermal sensation output signal generating means for generating a thermal sensation output signal so as to reduce a difference between the determined thermal sensation and the sensation on the thermal sensation-pulse wave amplitude characteristic; An air conditioning control device comprising: a temperature control unit that controls a temperature in the air-conditioned space to a value corresponding to the insensitivity according to an output signal. 2. A pulse wave detecting means for optically detecting a pulse wave of a person in a space to be air-conditioned through an earlobe to generate a pulse wave signal. Amplitude determination means for determining whether or not the amplitude of the pulse wave signal belongs to a predetermined amplitude range of the pulse wave signal; and amplitude of the pulse wave signal based on the determination that the amplitude does not belong to the pulse wave signal. An output signal generating means for generating an output signal so as to belong to the predetermined amplitude range, and an output signal generating means for stopping the generation of the output signal based on the determination that the amplitude signal belongs to the output signal, An air conditioning control device comprising: a temperature control unit that controls a temperature in the air-conditioned space to a value corresponding to the insensitivity. 3. The apparatus according to claim 1, further comprising a change unit configured to change the predetermined amplitude range by a human operation, wherein the amplitude determination unit determines whether or not the amplitude of the pulse wave signal falls within the change amplitude range set by the change unit. 3. The air conditioning control device according to claim 2, wherein the determination is performed. 4. A pulse wave detecting means for optically detecting a pulse wave of a person in the space to be air-conditioned through its earlobe to generate a pulse wave signal; A warm feeling that determines the warm feeling in accordance with the amplitude of the pulse wave signal based on a predetermined warm feeling-pulse wave amplitude characteristic so as to sequentially increase with a change from a warm feeling to a warm feeling that is hot through insensitivity. Determining means for determining the environmental physical quantity according to the determined thermal sensation based on an environmental physical quantity-thermal sensation characteristic representing a predetermined relationship between the environmental physical quantity of the conditioned space and the thermal sensation, and setting this as a converted environmental physical quantity; A converted environmental physical quantity setting means, and a required outlet temperature for determining a required outlet temperature of an air flow from the outlet into the air-conditioned space according to a desired temperature in the air-conditioned space and the converted environmental physical quantity. Deciding means, wherein said air flow is blown by a temperature Control means for controlling the temperature to the required outlet temperature.