JPH09156341A - Vehicular air-conditioner controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow an air-conditioner controller which automatically performs air conditioning to quickly adjust air conditioning when an engine is started and change air conditioning to reflect the intention of the driver after the vehicle has been started. SOLUTION: An air-conditioning mode is set by an air-conditioning mode setting means MS according to environments inside and outside a vehicle which are detected by an environment detection means ED. Depending on the air- conditioning mode, an air conditioning means AC is driven by a drive means DR to adjust air conditioning inside the vehicle. Requirements for driving the air conditioning means are manually set for the drive means by a manual setting means SC and are stored in a driving requirement storage means DC, and the air-conditioning mode is changed by the air-conditioning mode changing means MC depending on the contents stored. In accordance with the results of judgment by a vehicle condition judgment means VS, the air-conditioning means is driven based on the airconditioning mode set by the air-conditioning mode setting means at the start of the engine and on the air-conditioning mode changed by the air-conditioning mode changing means after the vehicle has been started.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioning control device, and more particularly to a device capable of learning a manual control mode with respect to an automatic control mode in accordance with a driving state of a vehicle.

[0002]

2. Description of the Related Art As a conventional air-conditioning control device for performing automatic air-conditioning control, for example, in Japanese Patent Application Laid-Open No. 3-54015, when an air blast is blown into a passenger compartment with a preset air flow characteristic, an occupant blows the air. A device for manually changing the maximum air flow rate, or when changing from the maximum air flow rate to a lower air flow rate, learning-controls the changed air flow rate, and changing the switching point of the maximum air flow rate in a preset air flow rate characteristic. Is disclosed.

Further, in Japanese Unexamined Patent Publication No. 5-208610, when the air volume is manually blown by an occupant while the air is blown based on the preset air blowing characteristic, the air blowing characteristic in the abscissa is displayed, for example. An air volume control device for a vehicle is disclosed that changes the air flow rate shown on the vertical axis of the air blow characteristic over an arbitrary range of the target vehicle interior temperature shown.

[0004]

However, in the above-mentioned conventional air-conditioning control device, when the basic ideal air-conditioning state is different from the driver's desire, the same manual operation must be performed every time the operation is started. It is complicated. For example, when the engine is started in a stopped vehicle on a hot day, the blower motor starts to rotate at the maximum speed, and even if the vehicle starts running, the blower motor continues to rotate at high speed. The operation of lowering the rotation speed of the blower motor is manually performed while the vehicle is traveling.

On the other hand, an air conditioning control device is disclosed in Japanese Patent Laid-Open No. 5-2.
In the case of the configuration like No. 08610, the driver's preference is reflected, but the effect of promptly bringing the air conditioning state in the vehicle interior to an appropriate state is reduced.

In view of the above, the present invention provides an air conditioning control device for a vehicle that automatically air-conditions the interior of a vehicle in accordance with the environmental conditions. The problem is to be able to change to an air-conditioning state that reflects the taste of.

[0007]

In order to solve the above-mentioned problems, an air conditioning control device for a vehicle according to the present invention is installed in the vehicle as shown in FIG.
And an environmental condition detecting means E for detecting the environmental condition inside and outside the vehicle.
D and the air conditioning mode setting means MS for setting the air conditioning mode in the vehicle compartment in accordance with the detection result of the environmental condition detection means ED
A driving means DR for driving the air conditioning means AC according to the air conditioning mode set by the air conditioning mode setting means MS; a manual setting means SC for manually setting the driving conditions of the air conditioning means AC for the driving means DR; A drive condition storage unit DC that stores the drive condition of the air conditioning unit AC set by the manual setting unit SC, and an air conditioner set by the air conditioning mode setting unit MS based on the drive condition of the air conditioning unit AC stored by the drive condition storage unit DC. Air-conditioning mode changing means MC for changing the mode
In a vehicle air conditioning control device including: a vehicle state determination means VS for determining at least a vehicle running state and an engine starting state, and when the vehicle state determining means VS determines that the engine is starting, Setting means MS
After the drive means DR drives the air conditioning means AC in accordance with the air conditioning mode set by, and the vehicle state determination means VS determines that the vehicle has started running, it is driven according to the air conditioning mode changed by the air conditioning mode changing means MC. The means DR is configured to drive the air conditioning means AC.

As the vehicle state determining means VS, there is a vehicle speed detector for detecting the speed of the vehicle. For example, the speed of the vehicle can be estimated based on the output signal of a wheel speed sensor arranged at each wheel.

It is desirable that the drive condition storage means DC is constructed so as to store the drive condition set by the manual setting means SC within a predetermined time after the vehicle starts running.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A vehicle air conditioning control device of the present invention will be described below with reference to the drawings. First, FIG. 2 shows an embodiment of an air conditioning control device of the present invention.
Is integrally formed in a container shape, and is provided with an inside / outside air switching unit 2, an air blowing unit 3, a cooling unit 4, a heating unit 5, and a blowing unit 6. In the air conditioning unit 1, the outside air and / or the inside air is introduced into the air conditioning unit 1 by the blower unit 3 via the inside / outside air switching unit 2 and is cooled via the cooling unit 4. This air is supplied to the downstream side via the heating unit 5, or bypasses the heating unit 5 and is supplied to the downstream side. In this way, the air passing through the heating unit 5 and the bypass air are mixed, adjusted to a predetermined temperature, and blown out from the blowing unit 6 to various places in the vehicle compartment. Hereinafter, each part of the air conditioning unit 1 will be specifically described.

The inside / outside air switching unit 2 is constructed so that either the outside air introduction port or the inside air circulation port is shielded by the switching damper 21, and the switching damper 21 is driven by the actuator M1 to switch between the outside air and the inside air. The introduction rate is adjusted. The blower unit 3 includes a blower motor 31 and a fan 32 that is rotationally driven by the blower motor 31, and air is introduced into the air conditioning unit 1 according to the rotation of the fan 32. Cooling unit 4
Is composed of an evaporator 41 disposed inside the air conditioning unit 1, and the evaporator 41 is a compressor or the like (not shown).
And a cooling cycle is configured.

The heating section 5 comprises a heater core 51 provided on the downstream side of the evaporator 41 and an air mix damper 52 provided on the upstream side of the evaporator 41. The opening degree of the air mix damper 52 is adjusted by an actuator M2. Is configured. The heater core 51 is configured to circulate cooling water of an engine (not shown), and is configured to exchange heat with passing air. Then, the mixing ratio of the warm air supplied to the downstream side via the heater core 51 and the cool air supplied to the downstream side bypassing the heater core 51 is adjusted according to the opening degree of the air mix damper 52, and the downstream side is adjusted. The temperature of the air is adjusted.

The blow-out portion 6 is formed at the most downstream portion of the air conditioning unit 1, and has a defroster damper 61 that opens and closes an air outlet near the front window, a face damper 62 that opens and closes an air outlet upward in the vehicle compartment, and A foot damper 63 that opens and closes an air outlet opening downward in the vehicle compartment is provided. These are driven by actuators M3 to M5, respectively, and their respective opening degrees are adjusted.

On the other hand, environmental conditions that affect the air conditioning in the vehicle include, for example, outside air temperature, inside air temperature, sunlight, engine cooling water temperature, etc., and an outside air sensor S for detecting these.
1, an inside air sensor S2, a solar radiation sensor S3, a cooling water temperature sensor S4, etc. are mounted on the vehicle, and these are connected to the controller 10. Thus, for example, the outside air sensor S1
The outside air temperature To is detected by the
The inside air temperature Ti is detected by and the detection signals are supplied to the controller 10.

The controller 10 includes a microprocessor CPU, a memory ROM, which are connected to each other via a bus.
It has a microcomputer MC consisting of a memory RAM, a timer TMR, an input port IP and an output port OP,
The detection signals of the sensors S1 to S4 are amplifiers A1 to A.
Input port IP via 4 to microprocessor CP
It is configured to be input to U. Further, each wheel of the vehicle is provided with a wheel speed sensor (typically represented by S5), and these output signals are input to the input port IP via the amplifier A5. Then, in the microcomputer MC, the vehicle speed is estimated by a well-known method based on the detected wheel speed, and is used for automatic air conditioning control described later.

The air conditioner switch S for turning on and off a compressor (not shown) including the start switch Ss for setting the automatic mode, that is, the automatic air conditioning control mode.
a, a blower switch Sb for starting the blower motor 31,
The outputs of the manually operated switch Sc, the temperature setting dial Sd, etc. are connected to the input port IP, and the respective switch signals are input. A control signal is output from the output port OP to the drive circuits C1 for driving the actuators M1 to M5 and the blower motor 31 via the drivers D1 to D6. The memory ROM stores the program corresponding to the flowcharts of FIGS. 3 and 4, and the microprocessor CPU executes this program and the memory RA
M temporarily stores the variable data necessary for executing this program.

FIG. 3 shows the process of the overall operation of the automatic air conditioning control in this embodiment. First, when the engine (not shown) is started and the start switch Ss is turned on, the initial step 101 is executed. And various setting modes are cleared. When the learning control process is performed based on the previous air conditioning control mode during the air conditioning control described later, the previous setting mode is held. Then, after the timer is turned on in step 102, the routine proceeds to step 103, where the outside air sensor S1, the inside air sensor S2, the solar radiation sensor S3, the cooling water temperature sensor S4, etc.
Each detection signal is input to the microcomputer MC, and an output signal of the temperature setting dial Sd or the like is also input.

Next, in step 104, the total signal T is calculated with reference to the target temperature of the air blown into the passenger compartment, for example. The target temperature of the blown air may be used as it is as the comprehensive signal T. Subsequently, the routine proceeds to step 105, where it is judged whether or not it is the auto mode. If it is the auto mode, the routine proceeds to step 106, but if not so, the routine jumps to step 113 and manual operation, that is, manual operation output setting is performed. In step 106,
After the engine is started, it is determined whether the vehicle speed Vs is still 0, that is, whether the vehicle is stopped. It is not always necessary to determine that the vehicle is stopped only when the vehicle speed Vs is 0, and it may be determined that the vehicle is stopped when the vehicle speed Vs is equal to or lower than a predetermined speed (for example, 5 km / h). In this way, when it is determined that the vehicle is substantially stopped even after the engine is started, the process proceeds to step 107, the drive voltage of the blower motor 31 is set based on the ideal pattern shown in FIG. Each control mode is set so as to be in the air conditioning state. Then, the process proceeds to step 108 and step 107
Air-conditioning control is performed based on the drive conditions set in. In FIG. 5, H represents a high level and L represents a low level.

On the other hand, if it is determined in step 106 that the vehicle speed Vs is not 0 (or exceeds the predetermined speed) and the vehicle has started running, it is stored in the memory RAM in step 109. The previous pattern is read. The previous pattern is, for example, a modified pattern shown by a solid line with respect to the ideal pattern shown by a two-dot chain line in FIG. 6 (similar to FIG. 5). Then, Step 1
At 10, it is determined whether or not the manual operation is performed. If the manual operation is not performed, the process directly proceeds to step 108, and the air conditioning control is performed according to the previously set pattern.

When it is determined that the manual operation is performed, the routine proceeds to step 111, where it is determined whether the timer started at step 102 has exceeded a predetermined time Tk. If it is determined that the elapsed time t is less than or equal to the predetermined time Tk, the process proceeds to step 112, where the pattern of the drive voltage of the blower motor 31 is changed, for example, as shown by the broken line in FIG. Each control mode is changed and set to a pattern based on manual operation. This pattern is stored in the memory RAM and after the previous pattern is updated, it is set to the output of the manual operation in step 113, and the air conditioning control is performed in step 108. When it is determined in step 111 that the elapsed time t exceeds the predetermined time Tk, the output of the manual operation at that time is set in step 113, and the process proceeds to step 108 to perform the air conditioning control.

FIG. 4 shows the air conditioning control executed in step 108. In step 201, the above-mentioned step 1
Based on the input signal 03, the target temperature of the air blown into the vehicle compartment is calculated. Incidentally, this temperature setting is described in the above-mentioned publications and the description thereof is omitted, but a predetermined temperature between the above-mentioned maximum setting temperature and the minimum setting temperature is set. Next, in step 202, the opening degree of the air mix damper 52 is adjusted according to the target temperature and the like, and in step 203, the blower motor 3
The rotation speed of 1 is controlled, and in step 204, the inside / outside air switching damper 21 is driven to control the switching between the inside air and the outside air. In step 205, the defroster damper 61, the face damper 62, or the foot damper 63 is driven and controlled according to the blowing mode. And step 20
After the compressor for cooling (not shown) is controlled in step 6, the process returns to the main routine in FIG. By repeating such processing, the air conditioning in the vehicle compartment according to the environmental conditions is automatically performed.

[0022]

Since the present invention is configured as described above, the following effects can be obtained. That is, the vehicle air conditioning control device of the present invention drives the air conditioning means in accordance with the air conditioning mode set by the air conditioning mode setting means at the time of engine start,
After the vehicle starts traveling, the air conditioning mode changing means is configured to drive the air conditioning means in accordance with the changed air conditioning mode, so that at the time of start-up, the air conditioning state in the vehicle interior can be promptly set to the optimum state. After the start of traveling, the air conditioning state can be changed to reflect the driver's preference.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a vehicle air conditioning control device of the present invention.

FIG. 2 is a block diagram showing a configuration of an air conditioning control device according to an embodiment of the present invention.

FIG. 3 is a flowchart showing the overall operation of automatic air conditioning control in the air conditioning control device according to the embodiment of the present invention.

FIG. 4 is a flowchart showing an air conditioning control operation in the air conditioning control device according to the embodiment of the present invention.

FIG. 5 is a graph showing operating characteristics of a blower motor in an ideal state in the air conditioning control device according to the embodiment of the present invention.

FIG. 6 is a graph showing the operating characteristics of the blower motor set according to the drive conditions stored in the air conditioning control device according to the embodiment of the present invention.

FIG. 7 is a graph showing operating characteristics of the blower motor changed by manual setting in the air conditioning control device of the embodiment of the present invention.

[Explanation of symbols]

 1 Air-conditioning unit 2 Inside / outside air switching section 3 Blower section 4 Cooling section 5 Heating section 6 Blowout section 8 Control panel 10 Controller Ss Start switch S1 Outside air temperature sensor S2 Inside air temperature sensor S5 Wheel speed sensor

Claims (1)

[Claims] 1. An air conditioner mounted on a vehicle to adjust an air condition in a vehicle compartment, an environmental condition detecting means for detecting an environmental condition inside and outside the vehicle, and an interior condition of the vehicle according to a detection result of the environmental condition detecting means. Air-conditioning mode setting means for setting an air-conditioning mode, driving means for driving the air-conditioning means in accordance with the air-conditioning mode set by the air-conditioning mode setting means, and manual operation for manually setting driving conditions of the air-conditioning means for the driving means The air conditioning mode setting means sets based on the setting means, the driving condition storage means for storing the driving condition of the air conditioning means set by the manual setting means, and the driving condition of the air conditioning means stored by the driving condition storage means. In a vehicle air conditioning control device including an air conditioning mode changing means for changing the air conditioning mode, a vehicle state determining means for determining at least the running state of the vehicle and the engine starting state is provided. When the vehicle state determination means determines that the engine is being started, the drive means drives the air conditioning means in accordance with the air conditioning mode set by the air conditioning mode setting means, and the vehicle state determination means causes the vehicle state determination means to operate. After it is determined that the vehicle has started running, the driving means drives the air conditioning means in accordance with the air conditioning mode changed by the air conditioning mode changing means.