JPH04138912A - Air-conditioner for vehicle - Google Patents

Abstract

PURPOSE:To obtain air-conditioning control in better accordance with the human feeling by measuring the temperature and the sweating quantity of a person in a car, and achieving air-conditioning compensated by these measured values. CONSTITUTION:A controller 7 calculates the difference between the outside air temperature measured by a sensor 1 and the preset temperature by a sensor 4, and determines the first control quantity by multiplying this difference by the first control coefficient. The second control quantity is determined by multiplying the quantity of solar radiation by a sensor 3 by the second control coefficient. Further, the difference between the actual human body temperature measured by a sensor 6 and the normal human body temperature is obtained, and the third control quantity is obtained through multiplication of the third control quantity by the third control coefficient and the like. Then, the necessary vented wind temperature is determined by subtracting the second control quantity from the first control quantity and by adding thereto the third control quantity. On the other hand, the fan air capacity is determined through the processes such as obtaining the difference between the preset temperature by the sensor 4 and the inside air temperature by a sensor 2, and obtaining the difference between the sweating quantity by a sensor 5 and the normal sweating quantity.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an air conditioning system for a vehicle, and more particularly to an air conditioning system for a vehicle that performs air conditioning control that corrects the influence of the amount of work of an occupant. .

[Conventional technology]

BACKGROUND ART Conventionally, air conditioning (temperature control) control in a vehicle is generally performed with the sole aim of stabilizing the temperature inside the vehicle.

In other words, based on the shape of the vehicle, the size of the space, etc., the temperature of the air blown out from the air conditioner outlet (blowout temperature), which is necessary to stabilize the temperature inside the vehicle, is calculated using the following formula. A method is used in which a temperature control actuator is controlled so that the blowing temperature is maintained.

T@o=ni+ (Ts To) Kz
S, +c where Ts: Set temperature To: Outside temperature Su: Solar radiation amount FIG. 8 is a flowchart showing the control of the required blowing temperature in a conventional vehicle air conditioner.

That is, control of the required blowout temperature in the conventional vehicle air conditioner is performed as follows.

(2) Find the error between the outside air temperature T0 and the set temperature T, and multiply this by the first control coefficient to find the first control amount.

■ Multiply the second control coefficient by 2 to the 1st solar radiation amount Su,
Find the control amount.

(2) Subtract the second controlled variable from the first controlled variable to obtain the required blowout temperature T. Establish.

[Problem B to be solved by the invention] Conventional air conditioners stabilize the vehicle interior temperature by considering only the outside temperature and the amount of solar radiation, as described above, and the influence of the amount of work of the occupants, that is, the occupant's The amount of heat generated per perspiration and the sensible temperature based on the body temperature of the occupants cannot be taken into account as control elements.

Therefore, the conventional vehicle air conditioner has a problem in that it is not possible to perform sufficient air conditioning control that takes into account the presence of an occupant in the vehicle interior and meets ergonomic requirements.

[Purpose of the invention]

The present invention aims to solve the problems of the prior art, and includes a vehicle air conditioner that measures the body temperature and amount of sweat of an occupant, and performs air conditioning control corrected based on these measured values. The purpose of the present invention is to provide a vehicle air conditioner that can perform air conditioning control that is more in tune with human experience.

[Means to solve the problem]

In the present invention, a necessary blowout temperature control means is provided to obtain the error between the outside air temperature (T0) and the set temperature (Ts), and multiply this by the first control coefficient (K1) to perform the first control. The amount of solar radiation (Su) is multiplied by the second control coefficient (K2) to obtain the second control amount, and the measured body temperature (TI
) and the normal body temperature (TB.), multiply this by the third control coefficient (Ks), and further calculate the ratio C (Tc - Tp) to the predetermined correction time (TC) from the start of control.
/Tp] to find the third control amount. and,
The required blowing temperature (TB) is determined by subtracting the second controlled variable from the first controlled variable and adding the third controlled variable.

In addition, the set temperature (TB) can be set by the fan air volume setting means.
and the inside air temperature (TB), and this is multiplied by a fourth control coefficient (K4) to obtain a fourth control amount. Find the error between the measured injection amount (Su) and the normal injection amount (Sl.), multiply this by the fifth control coefficient (Ks), and further calculate the ratio to the predetermined correction time (Tc) from the start of control. ((
The fifth control amount is obtained by multiplying Tc-Tp)/Tt').

Then, the fourth control amount and the fifth control amount are added to determine the fan air volume FAN. This aims to achieve the above-mentioned purpose.

[Effect]

The error between the outside temperature and the set temperature is multiplied by the first control coefficient to obtain the first control amount, the amount of solar radiation is multiplied by the second control coefficient to obtain the second control amount, and the measured body temperature is determined. The third control amount is obtained by multiplying the error between the normal body temperature and the third control coefficient by the ratio to the predetermined correction time from the start of control, and the second control amount is subtracted from the first control amount to obtain the third control amount. The required blowing temperature is first determined by adding the control amounts of 3. The fourth control amount is obtained by multiplying the error between the set temperature and the internal air temperature by the fourth control coefficient, and the error between the measured injection amount and the normal injection amount is multiplied by the fifth control coefficient and the difference from the start of control. The fifth control amount is obtained by multiplying the ratio to the predetermined correction time, and the fan air volume is determined by adding the fourth control amount and the fifth control amount. This makes it possible to perform air conditioning control that is corrected based on the occupant's body temperature and amount of perspiration, thereby making it possible to perform air conditioning control that matches the human experience.

〔Example〕

FIG. 1 is a block diagram showing an embodiment of the present invention, in which reference numeral 1 is an outside temperature sensor that measures the temperature outside the vehicle, 2 is an inside temperature sensor that measures the temperature inside the vehicle, and 3 is a A solar radiation sensor that measures the amount of solar radiation; numeral 4 is a set temperature sensor that detects a temperature set value; numeral 5 is a sweat detection sensor that detects the amount of perspiration of the occupant; numeral 6 is a body temperature sensor that detects the occupant's body temperature; numeral 7 is a A controller that controls the air conditioning; reference numeral 8 is a fan motor that drives a ventilation system that ventilates the interior of the vehicle; reference numeral 9 is a temperature control actuator that controls the temperature inside the vehicle; and reference numeral 10 is a fan motor that drives the ventilation system that ventilates the interior of the vehicle; is the exit actuator.

The present invention provides a vehicle air conditioner that includes a necessary blowout temperature control means to control the outside air temperature T. The error between and the set temperature T is determined, and the first control coefficient is multiplied by 1 to determine the first control amount, and the amount of solar radiation S is calculated. The second control coefficient is multiplied by 2 to obtain the second control amount, and the measured body temperature T and the normal body temperature T
8°, multiply the third control coefficient by 3, and further multiply by the ratio (TcTp)/Tp to the predetermined correction time Tc from the start of control to obtain the third control amount,
The required blowout temperature T is obtained by subtracting the second controlled variable from the first controlled variable and adding the third controlled variable. At the same time, a fan air volume control means is provided to find the error between the set temperature T and the inside air temperature Tr, and the fourth control coefficient is multiplied by 4 to find the fourth control amount. Injection amount Sw and normal injection amount S
Find the error with respect to 8°, multiply this by the fifth control coefficient, and further multiply by the ratio (TCTp)/Tp to the predetermined correction time T from the start of control to find the fifth control amount,
The fan air volume F is obtained by adding the fourth control amount and the fifth control amount.
A) 1 is determined.

Control in the vehicle air conditioner shown in FIG. 1 is performed according to the following control formulas.

In other words, the required blowout temperature T at the blowout port of the air conditioner
□0 is T,, -, (Ts -'ro) -2 Su
In addition, the air volume of the outlet at this time, that is, the fan air volume FAX, is as follows: FAN = (Ts - Tr) where T.

T-oh.

T.

S,I W.O. c. p measured body temperature normal body temperature Indoor temperature Measured pour amount Normal amount Correction time Time from control start It is.

FIG. 2 is a flowchart showing control of the required blowing temperature in the embodiment shown in FIG.

That is, the required blowing temperature is controlled as follows.

(1), outside temperature T. Find the error between and the set temperature T,
The first control coefficient is multiplied by 1 to obtain the first control amount.

(2) 9 Multiply the solar radiation Su by the second control coefficient by 2,
A second control amount is determined.

(3) Find the error between the measured body temperature T and the normal body temperature TIO, multiply the third control coefficient by 3, and further calculate the ratio (TCTp) to the predetermined correction time Tc from the start of control.
)/Tp to find the third control amount.

(4), subtract the second control amount from the first control amount, and
The required blowout temperature Two is determined by adding the control amount.

FIG. 3 shows the relationship between body temperature and control amount in body temperature correction, where normal body temperature T. Assuming that the case is 0,
According to the rise in body temperature T3, the control amount Kn (T
It has been shown to reduce IT'16).

FIG. 4 is a flowchart showing control of fan air volume in the embodiment shown in FIG.

That is, the fan air volume is controlled as follows.

(1) Find the error between the set temperature Ts and the inside air temperature T,
The fourth control coefficient is multiplied by 4 to obtain the fourth control amount.

(2), measured basis weight S; Find the error between the normal basis weight S We, multiply this by the fifth control coefficient, and further multiply by the ratio (TcTp)/Tp to the predetermined correction time T from the start of control, A fifth control amount is determined.

(3) Adding the fourth control amount and the fifth control amount to determine the fan air volume FAN.

FIG. 5 shows the relationship between the amount of sweat and the control amount in basis weight correction, and is for normal basis weight S. . Assuming that the case is 0, the control amount Ks linearly increases as the basis weight SL,l increases.
(St=Ss=.) has been shown to increase.

FIG. 6 shows the relationship between the amount of sweat and the correction time, and shows the normal basis weight S. . Until the correction time Tc is reached, the correction time Tc
is constant, but the normal basis weight S,. In the above, it has been shown that the correction time TC is decreased in accordance with the increase in basis weight.

In this way, the present invention lowers the blowout temperature when the body temperature is high, and increases the fan air volume when the person is sweating, thereby achieving an ergonomically considered vehicle air conditioning system as described above. It can be realized.

Further, in this case, the control time is changed depending on the amount of sweat, and the control is performed so that the control returns to normal control before the sweat subsides and the body cools down.

FIG. 7 shows an example of a sweat/body temperature detection sensor, and shows a case where it is provided on a part of a seat belt.

That is, when the seatbelt 11 is fastened, the sweat/body temperature detection sensor consists of a sweat detection sensor that detects the amount of sweat and a body temperature detection sensor that detects body temperature, which is placed on the inner part of the seatbelt that comes into contact with the passenger's body. A sensor 12 is provided. As the sweat detection sensor, for example, a humidity sensor that utilizes a change in capacitance can be used, and as the body temperature sensor, for example, a thermistor thermometer can be used.

〔Effect of the invention〕

As explained above, according to the present invention, when riding a vehicle, the body temperature and basis weight of the occupant are detected, and air conditioning control is performed by correcting these values, thereby performing air conditioning control that is more suited to human experience. You will be able to do this.

Although air conditioning equipment is often set as an option,
If sweat 1 body temperature is detected at the seat belt,
It is also easy to install the vehicle air conditioner of the present invention as an option after the vehicle is completed.

[Brief explanation of drawings]

Fig. 1 is a diagram showing an embodiment of the present invention, Fig. 2 is a flowchart showing control of the required blowing temperature, Fig. 3 is a diagram showing the relationship between body temperature and control amount in body temperature correction, and Fig. 4 is a fan A flowchart showing the control of air volume. Figure 5 is a diagram showing the relationship between the amount of sweat and the control amount in basis weight correction. Figure 6 is a diagram showing the relationship between the amount of sweat and correction time. Figure 7 is a diagram showing the relationship between sweat amount and correction time. - A diagram showing an example of a body temperature detection sensor, and FIG. 8 is a flowchart showing conventional control of required outlet temperature. To...Outside temperature, T...Set temperature, Su...
Solar radiation, Tm...Measured body temperature, TMo...Normal body temperature, T. ...Required blowing temperature, T, ...Inside air temperature, S...Measured basis weight, Sl. ...Normal basis weight, Tc...Correction time, FAN...Fan air volume, K,
...First control coefficient, K2...Second control coefficient, K
3... Third control coefficient, K4... Fourth control coefficient,
K5...Fifth control coefficient. Applicant Suzuki Motor Co., Ltd. Agent Patent Attorney Isamu Takahashi Figure 1 (1 畔 jt! I! and Iku + j) Figure 2 (ㅅ44shiku 2 A sword is Hiro F0 Jyorina Hitoshi 1) Figure 3 (Corporate report) Figure 4 (Fan style t-da wholesale cotton armor) Figure 6 (Weight weight information) Figure 6 (Supplementary information) Figure (Soup, 4 soups, 4 pieces) ) Figure (Jukai 1)

Claims (1)

[Claims] (1). By finding the difference between the outside temperature (T_0) and the set temperature (T_s) and multiplying it by the first control coefficient (K_1), the first control amount is found, and the amount of solar radiation (S_
u) by the second control coefficient (K_2), and further calculate the measured body temperature (T_B
) and the normal body temperature (T_B_0), and add the third
is multiplied by the control coefficient (K_3) of
-T_p)/T_p] to obtain the third control amount, subtract the second control amount from the first control amount, and add the third control amount to obtain the required blowout temperature (T_a_0 )
A necessary blowout temperature control means is provided to determine the temperature, and a fourth control amount is obtained by finding the difference between the set temperature (T_s) and the inside air temperature (T_r) and multiplying this by a fourth control coefficient (K_4). , measured sweat amount (S_w)
Find the difference between the amount of sweat and the normal amount of sweat (S_w_0), and add the fifth
is multiplied by the control coefficient (K_s), and further the ratio [(T_c-
T_p)/Tp] to obtain a fifth control amount, and add these fourth control amounts and the fifth control amount to determine the fan air volume F_A_N. Air conditioner for vehicles.