JPH0419217A - Adaptive air conditioner - Google Patents

Abstract

PURPOSE:To improve the operating environment of an adaptive air conditioner for a vehicle by detecting the vehicle operating state, and controlling an interior air blower and aromatic agent diffuser units on the basis of the detected vehicle operating state. CONSTITUTION:The output of an inside air O2 sensor 1A, an outside air O2 sensor 1B, a steering angle sensor 1C, and an engine speed sensor 1D is inputted into a controller 4. The controller 4 executes the specified program on the basis of this input information to control parts 5A-5F respectively. That is, when the inside air O2 density is lower than the contamination judging reference value, ventilation is judged to be necessary, so that an outside air switching valve 8A, an electrostatic filter 9 and a blower 6 are driven. When the outside air oxygen density is smaller than the inside air oxygen density, an inside air switching valve 8B is operated and the outside air switching valve 8A is closed to perform inside air circulation, and the diffuser units 7A, 7B for aromatic agents A, B are also operated. The operating environment can be thus improved.

Description

[Detailed Description of the Invention] [Summary] This invention relates to an adaptive air conditioner that adds fragrance to the air blown into a vehicle interior, with the aim of stimulating the driver's sense of smell and improving the driving environment. a sensor for detecting air, a blower for blowing air into the vehicle interior, an air freshener diffusion unit that selectively scents the air blown by the blower, and an air freshener diffusion unit that processes the output of the sensor to diffuse the blower and the air freshener. and a controller for controlling the unit.

[Industrial application field]

The present invention relates to an adaptive air conditioner that adds fragrance to the air it blows.

In-vehicle air conditioning systems help optimize the temperature and humidity inside the vehicle, but the psychological and physiological conditions of the driver are also influenced by other factors, so air conditioning can improve these conditions comprehensively. equipment is desired.

[Prior Art] Ordinary in-vehicle air conditioners, so-called automatic air conditioners, are controlled primarily to maintain a constant temperature and humidity within the vehicle interior, so no further improvement in the driving environment can be expected. For example, if a driver has been driving for a long time, he or she may become irritated due to traffic jams or feel sleepy due to the lack of change. In such cases, for example, to prevent drowsy driving, measures are taken such as increasing the volume of the radio to alert the driver, or opening the windows to expose the vehicle to outside air (wind). This is because the increase in CO2 concentration inside the vehicle physiologically promotes sleepiness.

[Problem to be solved by the invention]

Even with conventional air conditioning systems, there are types that automatically provide ventilation or activate an air purifier when the CO□ concentration in the vehicle cabin exceeds a certain value, but it is important to operate in a way that calms the driver's mind. I can't create an environment.

The present invention aims to comprehensively improve the driving environment by stimulating the driver's sense of smell.

[Means to solve the problem]

FIG. 1 is a diagram showing the principle of the present invention, where 1 is a plurality of operating state detection sensors, 2 is an output amplifier for each sensor, 3 is an A/D converter that digitizes the sensor output, 4 is a controller, and 5 is a driver. , 6 is a blower, and 7 is a plurality of fragrance diffusion units.

[Operation] The controller 4 determines the operating state from the output of the sensor 1, rotates the blower 6 as necessary to blow air into the vehicle interior, and at the same time selectively releases the fragrance from the fragrance diffusion unit 7.

The sensor 1 includes a steering angle sensor, an engine rotation sensor, a brake ON10 FF sensor, etc., and the driving state is determined from the outputs of these sensors. For example, if there are few changes in the steering angle and little change in engine speed over a long period of time, there is a possibility that the vehicle is drowsy, and if there are large changes in engine speed and the brakes are used frequently, the driver may be driving irritably. There is sex. Therefore, in the former case, the diffusion unit 7A diffuses the scent of mint, which has a stimulant effect, to prevent sleepiness, and in the latter case, the diffusion unit 7B diffuses the scent of jasmine, which has a sedative effect, to calm the mind. Make it.

〔Example〕

FIG. 2 is a configuration diagram showing an embodiment of the present invention, where IA is an inside air 0□ sensor, IB is an outside air 02 sensor, IC is a steering angle sensor, ID is an engine rotation sensor, and 2A to 2C are sensors I.
A to IC output amplifiers, 3 is an A/D converter, 4 is a controller using a microcomputer, 5A to 5F are drivers, 6 is a blower, 7A and 7B are fragrance diffusion units, 8
A is an on-off valve for the outside air duct, 8B is an on-off valve for the inside air duct,
9 is an electrostatic filter for purifying outside air.

Figure 3 is a layout diagram, where 10 is the vehicle body, 11 is the engine, and 12
is the wheel, 13 is the steering wheel, 14 is the outside air duct, 15
1 is an internal air circulation duct, 16 is a blower duct, and 17 is an accelerator, brake, or clutch pedal. The on-off valve 8B controls the opening and closing of the intake of inside air from the inside air duct 15, and the on-off valve 8A controls the opening and closing of the intake of outside air from the outside air duct 14.

Inside air enters the diffusion unit 7 through the on-off valve 8B, while outside air enters the diffusion unit 7 after being purified by the electrostatic filter 9. The air that has passed through the diffusion unit 7 is accelerated by the blower 6 and blown into the vehicle interior through the air duct 16. The controller 4 monitors the outputs of the sensors IA to ID and controls each part, but wiring between these parts is omitted in the drawing.

The aromatic agent diffusion unit 7 stores the liquid aromatic agent 72 inside the container 71 as in the fourth example, and passes some of it through the filter 73.
It is sucked up by the heater 74, and heated and vaporized by the heater 74. If the heater 74 is not energized, it will not vaporize, so when two types of units 7A and 7B are used, it is possible to create three odorless states in which either aroma A is produced by the unit 7A or aroma B is produced by the unit 7B. can. For example, aroma A is mint, which has a stimulant effect, and aroma B is jasmine, which has a sedative effect.

The table below shows an example of processing criteria by the controller 4. In the table, , b are the states of switches 8A and 8B, C0, C,
C3 is the state of the electrostatic filter 9, C4 is the state of the blower 6, l
(O□) is the internal air 0□ concentration, K is the pollution judgment standard value, and E(
O□) is the outside air 02 concentration.

Table 1 (- marks are the same as the previous state) Figure 5 is a flowchart showing the processing of the controller 4 based on the judgment criteria in Table 1, (a) is the main routine, (b)
is a time interrupt routine. Step Sl in (a) is the judgment of criterion A in Table 1, where 1(02)<<Ko
If it is determined that ventilation is necessary, proceed to step S2. , Cy, and Ca are turned on, and the bl flag is turned off to prepare for taking in outside air. When this step S2 is passed, and when the determination is N (no) in step S1, the reference port in the table is determined in step S3. If it is determined that E(0□)≦I (O□), the outside air is more polluted, so in step S4
Turn off the flag and turn on BO and Ci Mitsuragu to prepare for internal air circulation. After that, in step S5, the criteria shown in Table 1 are judged, and if Y (yes), it is close to sleepy operation, so in step S6, the mint air blowing state is set to Go, Ca on, and 01 off. If the result in step S5 is N, the standard work shown in Table 1 is determined in step S7, and if it is Y, the driver is in a nervous (irritable) driving state, so the result is C0 in step S8.
Set the jasmine ventilation state to OFF, C,, C, ON. If the answer is N in step S9, the process is brought to a stable state with no odor and air in step S9, temperature and humidity are adjusted in step SIO, and the process returns to step S1.

In the interrupt routine of FIG. 5(b), the parameter import process of step S21 is performed at regular intervals. In this processing, A/D conversion by the A/D converter 3, averaging processing of its output, detection of changes in steering angle, detection of changes in engine speed, and averaging processing thereof are performed. In the following step S22, the corresponding actuators are controlled according to various flags. This control is 0N10FF control or DUTY control.

(Effects of the Invention) As described above, according to the present invention, the psychological and physiological conditions of the driver can be improved by using various scents that stimulate the driver's sense of smell. This has the advantage of comprehensively improving the driving environment.

[Brief explanation of drawings]

Figure 1 is a diagram of the principle of the present invention, Figure 2 is a configuration diagram of an embodiment of the present invention, Figure 3 is a layout diagram of Figure 2, Figure 4 is an enlarged view of the fragrance diffusion unit, and Figure 5 is a diagram of the arrangement of the embodiment of the present invention. It is a flowchart which shows the processing of a controller. In the figure, 1 is a sensor, 4 is a controller, 6 is a blower, and 7 is a fragrance diffusion unit. Applicant Fujitsu Ten Ltd.

Claims (1)

[Claims] 1. A sensor (1) that detects the operating state of the vehicle; a blower (6) that blows air into the vehicle interior; an air freshener diffusion unit (7) that selectively scents the air blown by the blower; Adaptive air conditioner characterized in that it comprises a controller (4) for processing output to control said blower and said fragrance diffusion unit.