JPH0741794B2 - Automotive air conditioner - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an automobile air conditioner attached to a vehicle equipped with a wireless communication device.

[Prior Art] Conventionally, in an automobile air conditioner, the amount of air blown into the vehicle interior by a blower (hereinafter referred to as the blower air amount) is determined. The blower air volume is controlled by, for example, the difference between the actual vehicle room temperature and the set temperature, or by a manual switch, and has no relation to the call state of the wireless communication device on the vehicle.

[Problems to be Solved by the Invention] However, according to such an automobile air conditioner,
When making a call using the wireless communication device on the vehicle, there is a problem that the call is disturbed by noise generated from the blower (hereinafter referred to as blower sound). This is because the blower sound is mixed in the microphone of the wireless communication device or the speaker sound cannot be heard due to the blower sound.
In particular, since the speaker is larger than the microphone and is often installed at a position away from the caller, the problem that the speaker sound cannot be heard due to the blower sound is remarkable.

Since the blower sound is almost proportional to the blower air volume, the air conditioner may be manually operated to reduce or reduce the blower air volume to zero each time a call is made, but the driver who is the main caller Doing this while driving is both cumbersome and dangerous.

Therefore, the present invention, by automatically reducing the blower air volume and suppressing the blower sound during a call of the wireless communication device,
It is an object of the present invention to provide an air conditioner for a vehicle that allows a caller to make a call without interference by noise without performing a special operation.

[Means for Solving Problems] The present invention made to solve the above problems has a mechanism for determining the amount of air blown into the vehicle compartment by a blower M1 as shown in FIG. Terminal M2 connected to the wireless communication device
An air conditioner for a vehicle, comprising: detection means M3 for detecting a call signal output from the wireless communication device when the wireless communication device is in a call and outputting a detection signal; The gist of the present invention is an automotive air conditioner characterized by comprising a switching means M4 for reducing the amount of blown air defined by the blower M1.

Here, "when the wireless communication device is in a call" includes not only a case where the speaker is actually talking to the other party and a case where the call is ready for immediate communication, but also (1) a call request is issued. The period from (1) to the end of the call, and (2) the period from when there is an incoming call until there is no incoming call are included. Incidentally, in (1), the call origination request means an operation for calling the other party, for example, a state in which a receiver is raised in a car telephone. In addition, "end call" refers to a state in which the call ends and the receiver is placed. Furthermore, (2)
In, incoming is the state called by the other party,
For example, in the case of a car phone, it means that the incoming call is ringing.

[Operation] The automobile air conditioner of the present invention uses the call signal output from the wireless communication device when the wireless communication device is in a call.
The call is received by M2, and the call signal is detected by the detection means M3 and a detection signal is output. Then, the switching means M4 reduces the amount of air blown out by the blower M1 according to the detection signal.

[Embodiment] A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a schematic configuration diagram showing an automobile air conditioner as a first embodiment of the present invention. In the air conditioner of the present embodiment shown in the figure, a ventilation duct 2 is arranged in the front part of the vehicle compartment 1,
Inside the ventilation duct 2, an inside / outside air switching damper 3 for changing the ratio of intake of inside air and outside air, a blower 4 for determining the amount of air taken into the vehicle interior 1, and an evaporator 5a in order from the intake side.
And the air mix part 5 which has the heater core 5b and determines the temperature of the air blown out by the opening degree of the air mix damper 5, the defroster outlet 1a, the vent outlet 1b, and the heater outlet for the air blown into the passenger compartment 1. An outlet switching damper 6 for switching to 1c and a vent / heater switching damper 7 for further switching between the vent outlet 1b and the heater outlet 1c are attached. This inside / outside air switching damper 3, blower 4,
Air mix section 5, outlet switching damper 6 and vent
The heater switching damper 7 includes an inside / outside air switching actuator 8, a blower motor 9, an air mix unit drive unit 10,
It is configured to be driven by an outlet switching actuator 11 and a vent / heater switching actuator 12. The air mix section drive section 10 is an evaporator.
The compressor 10a connected to the 5a, the water valve 10b provided in the conduit for circulating the cooling water of the engine E / G with respect to the heater core 5b, and the heater heating capacity by opening and closing the water valve 10b. It is provided with a water valve drive unit 10c that increases and decreases and a cooling and heating switching actuator 10d that adjusts the opening of the air mix damper 5c.

In addition, each of these actuators and drive units fetches output signals from various sensors (to be described later), various switches provided on the control panel 40, the wireless communication device 51, etc., and is controlled by the electronic control unit 91. It is connected.

As the sensor, there is a vehicle room temperature sensor 31 that detects the temperature of the vehicle compartment 1, and the output signal thereof is input to the electronic control unit 91 via the A / D converter 32. In addition to this, the sensor group 33 includes various sensors such as a solar radiation sensor that detects the amount of solar radiation and an outside air sensor that detects the outside air temperature, and the output signal of each sensor is electronically transmitted through the A / D converter 34. It is input to the control device 91.

Further, the control panel 40 has a temperature setting switch 41 for setting the vehicle interior temperature to a desired temperature, and a mode switching switch 42 for setting various modes such as switching between the automatic mode and the manual mode. Are provided, and these set values are input to the electronic control unit 91 as digital signals. Further, a key switch (ignition switch) not shown is provided to activate the electronic control unit 91 and the air conditioner.

The wireless communication device 51 is a device mounted on a vehicle and used for communication with other vehicles and fixed stations, connection with a public line, and the like.
This is a device for making a voice call regardless of the duplex system or the simplex system. During a call by the wireless communication device 51, a call signal indicating that the wireless communication device 51 is in a call is output. Further, to the wireless communication device 51, an antenna 52 for wireless communication, a microphone 53 for inputting a transmission, and a speaker 54 for outputting a reception are connected. The antenna 52 is attached to the vehicle body, window glass or the like, and the microphone 53 and the speaker 54 are both attached inside the vehicle.

Output signals from the various sensors, setting switches, wireless communication devices, etc. are input to an electronic control device 91, and the electronic control device 91 controls the various actuators. The electronic control unit 91 is composed of a well-known microcomputer including a CPU, a ROM, a RAM, an input / output interface and the like.

The control operation by the air conditioner is executed according to the control program stored in the ROM. By this control operation,
Based on the output signals of the various sensors and setting switches, the blower 4 switches the air volume, switches the opening of the air mix damper 5c, etc. to automatically control the temperature of the passenger compartment. Furthermore, in this air conditioner, the wireless communication device 51
The blower air volume is automatically switched according to the call signal. These processes are executed according to the flowchart shown in FIG.

The flowchart of FIG. 3 will be described below. In the vehicle provided with the air conditioner of the present embodiment, the electronic control unit 91 is supplied with electric power to be in an operating state by the start of its operation, and the processing of FIG. 3 is executed at every processing time.

First, various data such as vehicle room temperature data detected by the vehicle room temperature sensor 31 and the sensor group 33 are read (step 100), and various setting data such as the set temperature data set by the temperature setting switch 41 and the mode setting switch 42 are read. Reading (step 110), a call signal input from the wireless communication device 51 is read (step 120).

Next, based on this call signal, it is determined whether or not the wireless communication device 51 is in a call (step 140), and the following processing is executed according to the result.

If it is determined in step 130 that the wireless communication device 51 is not in a call, normal processing shown in steps 140 and 150 is executed. That is, the temperature of the blown air is calculated based on the output data of the various sensors and the setting switch so that the vehicle room temperature matches the set temperature (step 140), and the blower air volume is calculated (step 150). In step 150, the blower air volume is calculated so that the blower air volume is increased when the difference between the vehicle room temperature and the set temperature is large, and is reduced when the difference between the vehicle room temperature and the set temperature is small. To do.

On the other hand, if it is determined in step 130 that the wireless communication device 51 is in a call, a blower air volume reduction process shown between A and B is executed. In this case, the calculated value of the blower air volume is reduced to a predetermined value regardless of the difference between the vehicle room temperature and the set temperature (step 160). Then, the temperature of the blown air is calculated based on the reduced blower air volume (step 170). In step 170, the temperature of the blown air is calculated so that the temperature of the air is made lower during cooling, as compared with the temperature before the decrease of the blower airflow, and increased at the time of heating, compared to the temperature before the decrease of the blower airflow. .

Finally, the opening of the air mix damper 5c is controlled (step 180), the compressor 10a is controlled (step 190), and the blower 4 is operated according to the blower air volume and the temperature of the blown air calculated as described above. After controlling the blower air volume of (step 200), this processing is ended.

Therefore, by executing the program processing according to the above-mentioned flowchart, it becomes possible to automatically reduce the blower air volume to a predetermined value during the call of the wireless communication device 51 and reduce the blower sound. As a result, it is possible to prevent the call interference due to the blower sound. Further, since the blower air volume is reduced during the call of the wireless communication device 51, and the temperature of the blown air is low during cooling and high during heating, it is possible to prevent the cooling and heating effect from being reduced due to the reduction in the blower air volume.

Next, an air conditioner according to a second embodiment of the present invention will be described. In the second embodiment, the flowchart of FIG.
The blower air volume reduction processing shown between A and B is changed as shown in FIG. Further, in the air conditioner of the second embodiment, it is assumed that the blower air volume can be switched between three levels, large, medium and small. The other points are the same as in the first embodiment. The processing of FIG. 4 will be described below.

The processing of FIG. 4 is performed by the wireless communication device 5 in step 130 of FIG.
Executed when it is determined that 1 is busy.

First, the difference between the vehicle room temperature and the set temperature is calculated (step 26).
0).

Then, the blower air volume is reduced according to the difference between the vehicle room temperature and the set temperature (step 270). In this step, for example, when the difference between the vehicle room temperature and the set temperature is large (that is, when the blower air volume is large), the blower air volume is reduced from large to medium, while the difference between the vehicle room temperature and the set temperature is reduced. When it is not so large (that is, when the blower air volume is medium), the blower air volume is reduced from medium to small.

Further, the temperature of the blown air is calculated based on the reduced blower air volume (step 280). In this step, the temperature of the blown air is calculated so that the temperature of the wind is lower than that before the decrease of the blower air volume during cooling, and the temperature of the air is higher than that before the decrease of the blower air volume during heating.

After this, similarly to the first embodiment, the damper control, the compressor control, and the blower control are performed based on the calculated blower air volume and the temperature of the blown air, and the blower air volume switching processing ends.

In the first embodiment, the blower air volume is reduced to a predetermined value during the call of the wireless communication device 51, whereas in the present embodiment, the blower air volume is reduced according to the difference between the vehicle room temperature and the set temperature.
Therefore, during the call of the wireless communication device 51, it is possible to reduce the blower air volume without significantly lowering the cooling and heating effect, and reduce the influence of the call interference due to the blower sound.

Next, an air conditioner according to a third embodiment of the present invention will be described. The present embodiment is an embodiment in which the present invention is applied to an air conditioner in which the blower air volume is switched by a manual switch.

FIG. 5 is a schematic configuration diagram showing the air conditioner of this embodiment.
The air conditioner of the present embodiment shown in the figure controls the blower motor 9 for driving the blower 4 by the blower switch 301 and the relay 302, and the detection circuit 303 receives the call signal output from the wireless communication device 51. The detection signal is output, and the relay 302 is controlled based on the detection signal.

The blower motor 9 is a motor in which the motor rotational speed is switched between high, medium and low by selecting one of the signals output from the control output terminals H, M and L and inputting it to the control input terminal Y. Is. According to the change of the rotation speed, the blower air volume of the blower 4 is switched to three stages, that is, large, medium and small. When no signal is input to the control input terminal Y, that is, when the control input terminal Y is open, the blower motor 9 does not rotate and the blower air volume becomes zero.

Blower switch 301 is a manual switch that determines the blower air volume, and one of input terminals A1, A2, A3, A4 is output terminal A.
It connects to 0. The input terminal A1 is open, and the input terminals A2, A3, A4 are connected to the control output terminals L, M, H of the blower motor 9, respectively.

The relay 302 is a relay that connects to one output terminal B0 of the input terminals B1 and B2 according to the detection signal output from the detection circuit 303. The input terminals B1 and B2 are connected to the output terminal A0 of the blower switch 301 and the control output terminal L of the blower motor 9, respectively, and the output terminal B0 is connected to the control input terminal Y of the blower motor 9. The relay 302 is normally in a state where the output terminal B0 and the input terminal B1 are connected (that is, when the detection signal is not input), but when the detection signal is input, the terminal B0 is input.
And the terminal B2 are connected.

The detection circuit 303 is a circuit that, when a call signal is input from the wireless communication device 51, detects the call signal and outputs a detection signal.

The wireless communication device 51, the antenna 52, the microphone 53, and the speaker 54 connected to the wireless communication device 51 are the same as those in the first embodiment, and therefore their explanations are omitted.

According to the air conditioner of the present embodiment configured as described above,
Normally, that is, when the wireless communication device 51 is not in a call, the output terminal B0 of the relay 302 is connected to the input terminal B1,
The blower motor 9 is switched according to the connection state of the blower switch 301, and the blower air volume is controlled. On the other hand, when the wireless communication device 51 is in a call, the output terminal B0 of the relay 302 is connected to the input terminal B2, so that the rotation speed of the blower motor 9 becomes low regardless of the connection state of the blower switch 301, and the blower motor 9 becomes low. The air volume is small.

Therefore, even in the air conditioner of the present embodiment configured to manually switch the blower air volume by the blower switch 301, the blower air volume is automatically reduced to a predetermined amount during the call of the wireless communication device 51, and the blower noise is reduced. It becomes possible to do. As a result, it is possible to prevent the call from being disturbed by the blower sound.

[Effects of the Invention] As described above, according to the present invention, the blower sound can be suppressed by automatically reducing the blower air volume during a call by the wireless communication device. Therefore, even when the air conditioner is operating, it is possible to make a call without interference due to noise, and the caller does not need to perform a special operation.

[Brief description of drawings]

FIG. 1 is a block diagram showing the basic configuration of the present invention, FIG. 2 is a schematic configuration diagram of an automobile air conditioner as a first embodiment of the present invention, and FIG. 3 is a blower executed in the first embodiment. FIG. 4 is a flow chart showing the air volume switching process, FIG. 4 is a flow chart showing a part of the blower air volume switching process executed in the second embodiment of the present invention, and FIG. 5 is a schematic configuration of the air conditioner of the third embodiment of the present invention. It is a figure. M1 …… Blower M2 …… Terminal M3 …… Detecting means M4 …… Switching means 4 …… Blower 9 …… Blower motor 91 …… Electronic control unit 302 …… Relay 303 …… Detecting circuit

Claims (1)

[Claims] 1. An automobile air conditioner having a mechanism for determining the amount of air blown into a vehicle compartment by a blower and having a terminal connected to a wireless communication device, wherein the wireless communication device is in a call. A detection unit for detecting a call signal output from the wireless communication device and outputting a detection signal; and a switching unit for reducing the amount of air blown by the blower according to the detection signal. Automotive air conditioner.