JPH0645291B2 - Vehicle control system - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle control system that uses both the amount of heat supplied to a vehicle cabin and the amount of heat received from the outside of the vehicle cabin.

(Prior Art) The amount of heat supplied to a vehicle passenger compartment is generally adjusted by adjusting the temperature of an air conditioner, and the amount of heat received is generally adjusted by curtain operation. The curtain operation is performed not only for the purpose of adjusting the amount of heat received, but also for other occupants' intentions in consideration of visual restrictions or appearance changes. These adjustments are made independently.

(Problems to be Solved by the Invention) According to the conventional vehicle, since both of the above adjustments are performed independently from the viewpoint of adjusting the air temperature in the passenger compartment, there are the following problems.

That is, the adjustment of the air temperature should correspond to the curtain operation, and the adjustment amount of the air temperature should be corrected when the heat receiving amount limiting action is exhibited regardless of the operation intention of the curtain.

It is an object of the present invention to solve the above problems and provide a vehicle control system in which air temperature control is automatically controlled in association with heat reception amount control.

(Means for Solving Problems) Therefore, according to the present invention, as shown in FIG. 1, the heat supply amount adjusting means for adjusting the heat supply amount to the vehicle cabin and the heat receiving amount from the outside of the vehicle cabin are adjusted. A control system for application to a vehicle, which comprises a heat receiving amount adjusting means capable of controlling the heat receiving amount, the first signal generating means generating a first signal related to a heat receiving amount from the outside of a vehicle passenger compartment, and a first signal generating device according to behavior of an occupant. Second signal generating means for generating two signals, first control means for controlling the adjustment of the heat receiving amount by the heat receiving amount adjusting means according to the first signal and the second signal, and the heat receiving amount by the first control means A second control means for controlling the increase / decrease of the amount of heat supplied to the vehicle passenger compartment by the supply heat amount adjusting means in correspondence with the increase / decrease control of No.

When realizing the configuration having such characteristics, it is preferable that the supply heat amount adjusting means uses an air conditioner that supplies an air-conditioning flow of which temperature and air amount are adjusted toward the vehicle passenger compartment. A so-called electric curtain or electric blind may be used as the heat receiving amount adjusting means. Further, a device for changing the color of the vehicle body surface, the optical reflectance or the like is also applied as the heat receiving amount adjusting means.

The first signal generating means may be a detector that measures solar radiation hitting the vehicle, so-called solar radiation. As the detector, either a light quantity-electric quantity conversion type or a temperature-electric quantity conversion type can be used. Further, the first signal generating means may use a detector for measuring the outside air temperature of the passenger compartment. This is because the outside air temperature often rises due to the effect of solar radiation. Also, the control output of the automatic temperature control device of the air conditioner can be used as the first signal generating means. This is because such an automatic temperature control device changes its control output in response to solar radiation or an increase in outside air temperature based on it.

The second signal generating means may use a manual switch, for example, a start switch that closes the electric curtain.

In the first control means, whether to give priority to the automatic control or the manual control can be arbitrarily selected. For example,
When trying to limit the amount of heat received according to the first signal,
It is a design matter for carrying out the concept of the present invention that the manual switch disables the attempt to release the limitation of the amount of heat received or that the manual switch can release the limitation.

The second control means can be configured integrally with the automatic temperature control device of the air conditioner. In this case, the control output may be received from the first control means, or the control output may be derived from a signal line connected from the first control means toward the heat reception amount adjusting means.

The degree to which the second control means adjusts the amount of heat supplied in relation to the adjustment of the amount of heat received is such that the amount of heat supplied is also continuously adjusted if the amount of heat adjusted can be continuously changed by the means for adjusting heat received. It may be changed.

When the heat receiving amount adjusting means can be arbitrarily selected in the vehicle, for example, when the effect of limiting the heat receiving amount is selected in an electric curtain, a correction amount corresponding to the limit of the heat receiving amount is preset and input. You may attach an input means so that it may be possible.

Further, the first control means and the second control means may be assembled by different circuit configurations, or may be integrated into one circuit configuration, for example, in a control program of a microcomputer.

(Operation and Effect) In the vehicle control system having the described features, the first
In the control means, the first signal generation means generates the first signal in association with the amount of heat received from the outside of the passenger compartment of the vehicle and the second signal generation means generates the second signal in accordance with the behavior of the occupant. The amount of heat received by the heat receiving amount adjusting means is controlled according to the signal. The second control means controls the increase / decrease of the heat supply amount to the vehicle cabin by the supply heat amount adjusting means in correspondence with the heat control adjustment of the heat reception amount by the first control means.

The amount of heat received from the outside of the passenger compartment of the vehicle, in particular the amount of solar radiation, is automatically limited by the amount-of-heat adjustment means based on the generation of the first signal, and the amount of air temperature adjustment is adjusted in consideration of the limitation. . Therefore, the tendency that the air temperature in the passenger compartment undesirably lowers or rises due to the influence of the heat receiving amount and the influence of the adjustment of the heat receiving amount adjusting means is suppressed.

(Embodiment) FIG. 2 shows the overall configuration of an embodiment of the present invention.
The illustrated vehicle control system is an air conditioning control system ACS.
And the blind control system BCS are combined, and the air conditioning control system ACS includes a temperature adjusting member TCD and a blow rate adjusting member BCD as a supply heat amount adjusting means.
The blind control system BCS is provided with a movable blind MB as heat receiving amount adjusting means.

Automatic temperature control circuit 10 for air conditioning control system ACS
Also, the control circuit 20 of the blind control system BCS is integrally housed in one circuit package 30.

The air conditioning control system ACS is for automatically controlling the air temperature in the vehicle cabin, and the automatic temperature control circuit 10 receives a signal from the temperature setter 11 indicating a control target value of the vehicle cabin air temperature. . The circuit 10 also includes a signal from the inside air sensor 12 indicating the actual measured value of the vehicle cabin air temperature, a signal indicating the actual measured value of the outside cabin air temperature from the outside air sensor 13, and a solar radiation from the solar radiation sensor 14. A signal indicating the actual measured value of is input.

The setting switch group 15 as an input means gives a correction amount (or correction coefficient) to the circuit 10 in accordance with the blind effect of the movable blind MB.

The automatic temperature control circuit 10 determines the amount of heat supplied so as to maintain the air temperature in the vehicle passenger compartment at a set temperature by executing a predetermined control program, and according to the determination, the temperature control member TCD and the air flow rate control member BCD. A control output for adjusting is provided. The control output is given to the temperature adjusting member TCD and the air flow rate adjusting member BCD via the drive circuit 16 and the drive circuit 17.

The blind control system BCS corresponds to the amount of solar radiation,
Further, the blind effect of the blind MB is controlled in response to the manual input, and in this embodiment, the blind MB is selectively operated to either "open" or "closed".

An operation mode selection switch 21 is connected to the control circuit 20 for blinds, and a signal indicating an operation mode manually selected is input.

Further, a blind control signal for automatically controlling the blind according to the amount of solar radiation is input from the automatic temperature control circuit 10 to the control circuit 20 through a line 18.

The control output of the control circuit 20 is given to the electric blind MB via the drive circuit 22. Further, the control output of the control circuit 20 is connected to the automatic temperature control circuit 10 so as to be input via the line 23.

The automatic temperature control circuit 10 is configured by using a microcomputer, and the operation of the circuit 10 is defined by the control program of the microcomputer. FIG. 4 shows the structure of such a control program, the basic part of which is publicly known. The operation of the air conditioning control system ACS will be described below according to the flow of the control program.

The control circuit 10, in step 40 of the program,
Setting device 11, sensors 12 to 14, selection switch group 15,
And various signals from the line 23 are input and temporarily stored.

Next, in step 41, the amount of heat of the airflow supplied to the passenger compartment in order to maintain the vehicle interior air temperature at the set temperature is calculated based on the stored signal. Generally, in the calculation of the amount of heat, the amount of adjustment of the temperature adjusting member TCD is pseudo treated as the amount of heat supplied, and the air flow adjusting member BCD
The adjustment amount is determined so as to have a simple proportional relationship with an appropriate amount, for example, the adjustment amount of the temperature adjustment member TCD, and this method may be adopted.

In step 41, the adjustment amount To is calculated according to the following calculation formula.

To = Ks * Ts-Kr * Tr-Kam * Tam- {Ksun (Kb / Pb)} * Tsun-C However, Ts is set temperature, Tr is an inside temperature, Tam is an outside temperature, Tsun is an insolation amount, Ks, Kr, Ka
m and ksun represent predetermined proportional constants.

Further, Kb represents the blind effect of the blind BM, and when the blind MB is in the light-shielded state, that is, when the input from the line 23 is at a high level, it takes a predetermined constant value, and when the blind MB is in the non-light-shielded state, That is line 2
"Zero" preset when the input from 3 is low level
Takes a value. Pb is a correction constant determined by the input signal from the selection switch group 15. C represents a predetermined constant value.

Here, the term (Kb / Pb) represents the degree of contribution to the temperature control by the blind effect, and the correction selected in accordance with the shading characteristic that changes depending on the type of the blind MB only when the blind MB is in the shading state. It is determined in consideration of a constant.

Thus, the temperature adjustment member TC is (generally proportionally) based on the adjustment amount To determined in consideration of the blind effect.
The amount of adjustment of D and the air flow rate adjusting member BCD is determined and applied to the drive circuits 16 and 17 in step 42.

The control circuit 10 further determines in step 43 the amount of solar radiation T
It is determined whether or not sun is larger than a preset reference value, that is, whether or not light shielding by the blind MB is necessary.

When the determination result is affirmative, a high level signal is given to the line 18 connected to the blind control circuit 10, but when the determination result is negative, a low level signal is given to the line 18.

Next, the blind control circuit 10 will be described with reference to FIG. Manual switch 21 is "automatic""open"
The three positions of "closed" can be selected. One end of the movable setting of the manual switch 21 is grounded, and the fixed contacts at the “auto” and “open” positions are the inverters 24, 25.
The switch-on is converted into a signal indicating a high level via.

Thus, when the manual switch 21 is turned to the "automatic" position, the inverter 24 goes high and opens the AND gate 26. In this state, the AND gate 26 produces an output that goes to a high level when the temperature control signal (line 18) from the automatic temperature control circuit 10 is at a high level indicating the need for light shielding. The output end of the AND gate 26 is an OR gate 27.
Is connected to the input end of the blind drive circuit 22 from the OR gate 27. After all, in the "automatic" mode in which the manual switch 21 is turned to the "automatic" position, the movable blind MB automatically selects the light-shielded state or the non-light-shielded state according to the signal level of the line 18.

When the manual switch 21 is turned to the "open" position, the AND gate 26 is closed, but the inverter 25 gives a high level signal to the OR gate 27. Therefore, in the "open" mode of the manual switch 21, the movable blind MB is kept in a light-shielded state.

When the manual switch 21 is operated to the "closed" position, the outputs of the inverters 24 and 25 both become low level.
Therefore, the output of the OR gate 27 becomes low level,
The movable blind MB is in the non-light-shielding mode.

In this way, the manual switch 21 can manually set the movable blind MB to the “open” or “closed” state. In the case of this manual operation, since the AND gate 26 is closed, the "automatic" blind control is invalid.

However, line 23 produces a signal which is consistent with the operating state of the movable blind MB, as described above. That is, when the amount of solar radiation is equal to or greater than the reference value, the movable blind MB is in the “open” state and the heat receiving amount is not limited, or the amount of solar radiation is less than the reference value but the movable blind MB is not.
Even in the second case in which the heat reception amount is limited due to the “closed” state, the signal level of the line 23 changes in accordance with the operating state of the movable blind MB.

The automatic temperature control circuit 23 controls the temperature according to the signal level of the line 23. Therefore, the first and second cases do not cause a control deviation in the automatic temperature control.

[Brief description of drawings]

1 is a block diagram showing the features of the present invention, FIG. 2 is an overall block diagram of an embodiment of the present invention, FIG. 3 is a detailed electrical connection diagram of the blind control circuit 20 shown in FIG. 2, and FIG. 2 is a flow chart showing the operation of the automatic temperature control circuit shown in FIG. 10 ... Automatic temperature control circuit (second temperature control means), 14
...... solar radiation sensor (first signal generating means), 20 ... blind control circuit (first control means), 21 ... manual switch (second signal generating means).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kiyoshi Hara, 1-1, Showa-cho, Kariya city, Aichi Prefecture, Nihon Denso Co., Ltd. (72) Inventor, Takataka Cho, 1-1, Showa-cho, Kariya city, Aichi prefecture Incorporated (72) Inventor Kenji Tsukahara, 1-1, Showa-cho, Kariya city, Aichi Prefecture

Claims (1)

[Claims] 1. A vehicle control system for use in a vehicle, comprising: a supply heat amount adjusting means capable of adjusting a heat supply amount to a vehicle passenger compartment; and a heat receiving amount adjusting means capable of adjusting a heat reception amount from the outside of the vehicle passenger compartment. And a first signal generating means for generating a first signal related to the amount of heat received from the outside of the vehicle cabin, a second signal generating means for generating a second signal according to the behavior of an occupant, the first signal and the second signal. According to the first control means for controlling the increase / decrease of the heat reception amount by the heat reception amount adjusting means, and the supply to the vehicle cabin by the supply heat amount adjusting means in correspondence with the increase / decrease of the heat reception amount by the first control means. A control system for a vehicle, comprising: a second control means for controlling the amount of heat.