KR100211376B1 - Automobile air conditioning apparatus and control method therefor - Google Patents

Abstract

According to the present invention, since the air conditioner for a vehicle is an integrated air conditioning system, since the air discharged into the cabin is temporarily discharged to the ventilation grille of the driver's seat and the passenger's seat, it is not possible to realize this when the occupant of each seat desires a different temperature. In order to solve this problem, the cooling water temperature sensor 210 for detecting the coolant temperature, the outside air temperature sensor 220 for detecting the temperature of the outside air, the operation unit 230 for setting the target temperature and operation mode of the front, rear, left and right of the vehicle, Infrared sensor 224, which is installed in the center of the cabin and measures the presence and occupancy of the occupant, the cabin temperature sensor 221 that measures the temperature of each part of the cabin, and the air temperature flowing through independent ducts in the front, rear, left and right of the cabin. A temperature control unit 260 for controlling each, the coolant temperature sensor 210, the outside temperature sensor 220, the vehicle temperature sensor 221, the operation unit 230, and the infrared Receiving a signal from a sensor 224 input provides an automobile air-conditioning system and a control method for a control unit 200 that outputs an appropriate control signal to the temperature controller.

Description

Automotive air conditioning and control method

The present invention relates to a vehicle air conditioning system and a control method thereof, and more particularly, to a vehicle air conditioning unit and a control method capable of independently controlling the temperature of the front, rear, left and right of the vehicle compartment.

In general, a car has a heating and cooling system to secure a driver's watch for safe and comfortable driving by ensuring that a person who rides in a car has a pleasant environment under all weather and driving conditions, and also prevents windshields and frosts. Is installed.

In order to achieve this purpose, the automotive air conditioner must maintain an appropriate temperature, humidity and air flow, and must also be able to maintain clean air.

In addition, the glass in front, rear, left and right should be prevented from becoming blurred or frosted.

Referring to FIG. 1, a conventional automotive air conditioning apparatus is as follows.

Automotive air conditioning system is equipped with various control switches (blower control, wind direction control, temperature control, etc.) installed in the instrument panel 10 of the driver's seat, the heater unit 20 for heating, the cooling unit 30 for cooling and the wind It is composed of a blower unit 40 and the like to blow.

In detail, an air duct 42, which is a passage through which air flows, is installed inside the instrument panel 10 in the vehicle interior, and the heater unit 20 is mounted on the air duct 42, and the cooling unit 30 is also provided. ) And a blower unit 40 are assembled with the heater unit 20.

Ventilation grills 52 and 54 for discharging the air flowing through the air duct 42 to the vehicle compartment are usually installed on the front surface of the instrument panel 10.

The ventilation grilles 52 and 54 are divided into a side grille 52 on the driver's side and a passenger's side and a center grill 54 between the driver's seat and the passenger's seat, and a defroster outlet for removing frost of the windshield grass. 56, and the like.

Referring to Figure 1 illustrates the operation of a conventional automotive air conditioning unit as follows.

When the air conditioning unit is operated, air is blown into the duct 42 by the blower unit 40, and the air is brought into a proper state in the heater unit 20 and the cooling unit 30, and the ventilation grills 52 and 54 are removed. It is supplied to the cabin through.

That is, since the conventional air conditioner for a vehicle is an integrated air conditioning system, the air discharged into the cabin is temporarily discharged by the ventilation grilles of the driver's seat and the passenger seat, so that air of the same temperature is discharged to the driver's seat or the passenger seat.

Therefore, when the driver and the passenger of the passenger seat or the occupant of the rear seat want a different temperature, there is a problem that this can not be realized in the conventional automotive air conditioning system.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a heating and cooling device for a vehicle that can control the front, rear, left and right of the vehicle at different temperatures and a control method thereof.

1 is a perspective view showing a conventional automotive air conditioning unit,

Figure 2 is a plan view schematically showing the installation position of the temperature control area and the infrared sensor in the vehicle air conditioner according to the present invention,

3 is a block diagram showing the configuration of a vehicle heating and cooling device according to the present invention,

Figure 4 is a flow chart showing a control method of a vehicle heating and cooling device according to the present invention.

* Explanation of symbols on the main parts of the drawings

221: vehicle temperature sensor 224: infrared sensor

210: cooling water temperature sensor 220: outside temperature sensor

230: operation unit 260: temperature control unit

200: control unit

Referring to the configuration of the present invention for achieving the above object is as follows.

A feature of the present invention is to install independent ducts in the front, rear, left and right of the vehicle compartment, and to independently control the temperature of the air flowing through the duct, and furthermore, by installing an infrared sensor, By detecting the presence and temperature of the body to automatically maintain the optimal cabin temperature according to the passenger's body temperature.

In other words, the vehicle air conditioner according to the present invention is a cooling water temperature sensor for detecting the coolant temperature, the outside air temperature sensor for sensing the temperature of the outside air, the operation unit for setting the target temperature and operation mode of the front, rear, left and right of the cabin, approximately in the center of the cabin An infrared sensor installed to measure the presence and the body temperature of the occupant, a cabin temperature sensor for measuring the temperature of each part of the cabin, a temperature controller for controlling the air temperature flowing through independent ducts in front, rear, left and right of the cabin, and the cooling water temperature sensor And a control unit configured to receive signals from the outside temperature sensor, the vehicle interior temperature sensor, the operation unit, and the infrared sensor, and output an appropriate control signal to the temperature control unit.

Here, the temperature control unit appropriately controls the heating unit, the cooling unit, and the blower unit for controlling the state of the air flowing through each duct independently installed.

And the control method of the automotive heating and cooling apparatus according to the present invention comprises the steps of starting the program stored in the control unit when the vehicle is started, determining whether the coolant temperature is above a certain temperature, and if the coolant temperature is above a certain temperature infrared Determining whether there is a passenger from the input value of the sensor, determining the body temperature of each occupant from the input value of the infrared sensor if there is the occupant, receiving a desired room temperature and driving mode of the front, rear, left, and right from the operation unit; Receiving a measurement value of the outside temperature and each part vehicle temperature from the outside temperature sensor and the vehicle temperature sensor, determining whether the operation mode is automatic mode, and if the automatic mode, each part using the measured and calculated body temperature The steps to determine the optimum target room temperature of the room and the room temperature of each part that is inputted in the automatic mode. Determining each of the target cabin temperature, determining whether the outside air temperature is higher than the target cabin temperature of each seat, and operating the air conditioner for cooling if the outside air temperature is higher than the target temperature of each seat. And stopping the air conditioner for heating when the outside air temperature is lower than the target temperature of each seat, and determining the rotation direction and the rotation speed of the blower according to the respective indoor temperature and the respective target cabin temperature. Controlling the blower.

Therefore, according to the present invention, it is possible to independently control the temperature of each seat.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can specifically realize the above object will be described.

Figure 3 is a block diagram showing an embodiment to which the present invention is applied to describe the air-conditioning device for a vehicle according to the present invention with reference to the following.

Cooling water temperature sensor 210, the outside temperature sensor 220, the operation unit 230, the infrared sensor 224 and the vehicle interior temperature sensor 221 is electrically connected to the input side of the control unit 200, the temperature control unit 260 on the output side ) Is electrically connected.

The infrared sensor 224 detects the presence and the body temperature of the occupant using the difference in the amount of infrared radiation according to the temperature of the human body.

As shown in FIG. 2, the infrared sensor 224 is installed in the center of the vehicle to measure the occupant presence and body temperature of each part (FL, FR, RL, RR), and the vehicle temperature sensor 221 is It is installed in each part of the cabin (FL, FR, RL, RR).

In addition, air flow ducts are formed in each of the front, rear, left, and right portions (FL, FR, RL, RR) of the vehicle compartment, and the temperature control unit 260 controls the air flowing through the respective ducts.

Referring to Figures 3 and 4 the operation of the embodiment according to the present invention described above is as follows.

When the vehicle is started, the vehicle air conditioner according to the present invention is activated (S0).

And if the cooling water temperature is less than a certain temperature (X) it can not have the effect of heating is operated only when the cooling water temperature is above a certain temperature (X) (S10).

Next, it is determined whether an occupant is in each seat using the input value from the infrared sensor 224 (S20), and if there is a occupant, the body temperature (TB) of each occupant using the input value from the infrared sensor 224. Calculate (S30).

After the control unit 230 receives the desired room temperature T and the operation mode of each part (S40), the outside air temperature T0 and the room temperature TI are determined from the outside air temperature sensor 220 and the room temperature sensor 221. It receives an input (S50, S60).

Next, it is determined whether the operation mode is the automatic mode (S70), and in the case of the automatic mode, the optimal target vehicle temperature TS is determined using the body temperature TB, and if it is not the automatic mode, the operation unit 230 is determined. In step S80, the set temperature T received in the step S is set as the target room temperature TS.

Then, it is determined whether the outside temperature T0 is higher than the target room temperature TS (S90), and when it is high, the temperature control unit 260 is controlled for cooling. That is, start the air conditioner (S100).

On the contrary, when the outside air temperature T0 is lower than the target room temperature TS, the air conditioner is stopped for heating (S110).

Then, the rotational speed of an unshown blower unit installed in each duct is determined in proportion to the deviation of the outside air temperature T0 and the target room temperature TS, and the blower unit is controlled through the temperature control unit 260 ( S120).

That is, the above process can independently control the temperature of each part of the vehicle compartment.

Referring to the effects of the embodiment according to the present invention described above are as follows.

According to the present invention described above, it is possible to control the temperature of each part of the vehicle compartment independently, so that it is possible to ride comfortably and the merchandise of the vehicle is increased.

The present invention has been described above only one embodiment, but as can be seen in the appended claims, those skilled in the art to which the present invention pertains may be modified without departing from the spirit of the present invention. It will be understood that it belongs to the scope of the invention.

Claims (2)

Cooling water temperature sensor for detecting the cooling water temperature; An outside air temperature sensor for sensing a temperature of outside air; An operation unit for setting a target temperature and an operation mode of the front, rear, left and right of the vehicle; An infrared sensor installed in the center of the vehicle and measuring presence and absence of a passenger; A cabin temperature sensor for measuring a temperature of each part of the cabin; A temperature control unit controlling air temperatures flowing through independent ducts in front, rear, left, and right of the vehicle; A control unit for receiving signals from the cooling water temperature sensor, the outside temperature sensor, the vehicle temperature sensor, the operation unit, and the infrared sensor and outputting an appropriate control signal to the temperature control unit; Automotive air conditioning unit including. Starting a program stored in the control unit when the vehicle is started; Determining whether the cooling water temperature is above a predetermined temperature; Determining whether a passenger is present from an input value of an infrared sensor when the cooling water temperature is higher than a predetermined temperature; Determining the temperature of each occupant from the input value of the infrared sensor, if the occupant is present; Receiving a desired room temperature and an operation mode of the front, rear, left, and right sides from the operation unit; Receiving measurement values of the outside air temperature and the compartment temperature of each part from the outside air temperature sensor and the room temperature sensor; Determining whether the driving mode is an automatic mode; Determining an optimal target room temperature of each part using the measured and calculated body temperature in the automatic mode; If it is not in the automatic mode, setting a room temperature of each of the received portions as the respective target room temperature; Determining whether the outside air temperature is higher than the target room temperature of each seat; Operating an air conditioner for cooling if the outside temperature is higher than a target temperature of each seat; Stopping the air conditioner for heating when the outside temperature is lower than the target temperature of each seat; Determining a rotation direction and a rotation speed of the blower with the respective room temperature and the respective target vehicle temperature, and controlling the blower accordingly. Control method of a vehicle heating and cooling device comprising.