JP2995678B2 - Louver position sensing control method for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sense the correct direction of a distance sensor even it the rotational speed of a left/right rotary louver motor is not constant by sensing the position of a left/right rotary louver based on a light being transmitted and received through a hole of a left/right rotary louver ring depending on the left/right motion thereof. SOLUTION: The louver position sensor comprises a left/right rotary louver ring 15 for converting the rotary motion of a left/right rotary louver motor and a cam 10 into a left/right linear motion to operate a left/right rotary louver 6, a large number of holes for sensing the position of the left/right rotary louver 6, and a position sensing section 11 for sensing the the position of the left/right rotary louver 6 based on a light being transmitted and received through the hole depending on the left/right motion of the left/right rotary louver ring 15. The position sensing section 11 comprises a photosensor for sensing the direction of the left/right rotary louver 6, and a position sensing plate interposed between the photosensors and provided with a large number of position sensing holes. Position of the left/right rotary louver 6 is sensed by detecting the hole of the position sensing plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly to a louver position sensing device for an air conditioner for sensing a louver position of an air conditioner and a control method thereof.

[0002]

2. Description of the Related Art A louver position sensing method for an air conditioner according to the related art will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram for explaining a configuration of a general air conditioner. This general air conditioner includes a power supply unit 1, an indoor temperature sensing unit 2, a compressor drive unit 3, a blower fan drive unit 4, a central processing unit 5, a left / right rotating louver drive unit and a distance sensor. The driving unit 6 includes a distance sensing sensor transmitting unit 7, a distance sensing sensor receiving unit 8, and a position sensing unit 11.

The power supply unit 1 of the general air conditioner configured as described above supplies power to each part of the air conditioner, the indoor temperature sensing unit 2 senses the indoor temperature, and the compressor driving unit 3 Drives a compressor (not shown). Also, the blower fan drive unit 4
Blows cool air, the central processing unit 5 controls each part of the air conditioner, and the left and right rotating louver drive unit and the distance sensing sensor drive unit 6 adjust the wind direction. The distance sensing sensor transmitting unit 7 generates and transmits an ultrasonic wave, and the distance sensing sensor receiving unit 8 receives the ultrasonic wave generated by the distance sensing sensor transmitting unit 7 and reflected by an object or a human body, and receives the position detecting unit. 1
Numeral 1 detects the direction of the left and right rotating louvers by the ultrasonic waves received by the distance sensing sensor receiving section 8.

FIG. 2 is a front view of the general air conditioner of FIG. 1, and FIG. 3 is a circuit diagram showing a detailed configuration of a distance sensing sensor position sensing unit of FIG. First, the left / right rotating louver motor and the cam 10 drive the left / right rotating louver 6 to transmit power to the left / right rotating louver link 15. The left / right rotating louver link 15 converts the rotating motion of the motor 10 into a left / right linear motion to operate the left / right rotating louver 6.
Then, the distance sensing sensor transmitting / receiving sections 7 and 8 are interlocked with the left and right rotating louvers 6 and can recognize the direction of the rotating louvers 6. As shown in FIG. 3, the position sensing unit 11 has an initial sensing switch 12 for sensing an initial position of a distance sensing sensor at one end to which the left-right rotating louver link 15 can move and reach. When left and right rotation louvers link 15 pushes the initial sensing switch 12 recognizes that the voltage of the input terminal P ₁ is low, the distance detecting sensor, the central processing unit 5 is positioned at the initial position.

Hereinafter, a conventional method for sensing the position of the distance sensing sensor of the air conditioner constructed as described above will be described with reference to the flowcharts of FIGS. Normally, left and right rotating louvers 6
Moves in one direction in direction 1, direction 2, direction 3, direction 4, then reversely rotates in direction 5, direction 6, direction 7,
Return to original location. In order to control the operation of the left-right rotating louver 6 as described above, first, the left-right rotating louver motor 10
Is driven to move the link left and right (S41). Whether the left-right rotation louver 6 has reached one end where the left-right rotation louver link 15 can move and reach is determined by the voltage of the input terminal P ₁ corresponding to the state of the initial sensing switch 12 of the position sensing unit 11. to decide. If the voltage of the input terminal P ₁ is low, the initial sensing switch 1 of the position sensing unit 11
2 is turned on, it is determined that the distance detecting sensor is located the position of the louver to the initial position, if the voltage of the input terminal P ₁ after this is high (S42), distance detecting sensor direction the position of the louver 1 (S4).
3). After a predetermined time (t ₁ ) elapses after the distance sensing sensor determines that the position of the louver is the direction 1 (S4).
4) After judging the direction 2 (S45) and judging the direction 2 of the distance sensing sensor, after a lapse of a predetermined time (t ₂ ) (S46), judging the direction 3 (S47), After a predetermined time (t ₃ ) elapses after the direction 3 is determined (S48), the direction 4 is determined (S49).

If the direction of the distance sensor becomes 4,
The left and right rotating louvers 6 and the position sensing unit 11 rotate in reverse. After a certain time (t ₄ ) elapses after the distance sensing sensor determines that the position of the louver is the direction 4 (S5).
0), determines that the direction 4 for reverse rotation (S51), after determining that the direction 4 of the distance detecting sensor, when the predetermined time (t ₅₎ has elapsed (S52), determines that the direction 3 (S
53) After a predetermined time (t ₆ ) elapses after determining that the direction of the distance sensor is 3 (S54), it is determined that the direction is 2 (S55). When the time (t ₇ ) elapses (S56), the direction 1
Is determined (S57). Thereafter, the process returns to the initial position determination step of the distance sensing sensor for detecting the initial sensing switch 12, and the above operation is repeated.

The prior art apparatus and method for detecting a distance of a distance sensor of an air conditioner configured as described above detects an initial position of the distance sensor in order to detect a direction of the distance detection. Since the direction of the distance sensing sensor is determined based on the lapse of a fixed time from the time when the initial position of the sensor is sensed, if the left and right rotating louvers rotate discontinuously, the rotation speed of the left and right rotating louver motors will not be constant, so distance sensing will be performed. There is a problem that the direction of the sensor cannot be accurately determined.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a distance sensing sensor which can rotate the distance sensing sensor even if the rotation speed of the louver motor is not constant. An object of the present invention is to provide an air conditioner louver position sensing device capable of sensing an accurate direction and a control method thereof.

[0009]

According to the present invention, there is provided a louver position sensing device for an air conditioner, wherein a louver position sensing unit is located between optical transmitting and receiving units, and senses a position in a left-right rotating louver direction. It is characterized in that it has a number of holes that can be rotated, and the position of the left-right rotating louver is sensed by light transmitted and received through the holes according to the left-right movement of the left-right rotating louver link.

Also, the method of controlling the louver position sensing device of the air conditioner according to the present invention is characterized in that the left and right rotating louver links are moved left and right while a signal for light received through the position sensing hole is used to initialize the left and right rotating louvers. After sensing the position and sensing the initial position, a next position is determined based on a signal for light received through the next position sensing hole, and the next position is a position where the left and right rotating louvers are reversely rotated. It is characterized in that the left and right rotating louvers are reversely rotated to the initial position if the position is to be reversed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A louver position sensing device for an air conditioner and a control method thereof according to the present invention will be described below with reference to the accompanying drawings. FIG. 6 is a perspective view illustrating the detailed configuration of the louver position sensing device of the present invention. The configuration of the louver position sensing device of the present invention will be described together with the configuration of a general air conditioner as shown in FIG. The left and right rotating louver motor and cam 1
A left / right rotating louver link 15 for operating the left / right rotating louver 6 by converting the 0 rotating motion into a left / right linear motion, and a plurality of holes capable of sensing the position of the left / right rotating louver 6; The left and right louvers 6 are transmitted and received through a hole according to the left and right movement of the louver 6.
And a position sensing unit 11 'for sensing the position of the object.
Here, the position sensing unit 11 ′ includes an optical sensor 511 for sensing the direction of the left / right rotating louver 6, and a plurality of position sensing holes 51 located between the optical sensors 511.
2 is provided with a position sensing plate 51 provided therein.

FIG. 7 is a detailed circuit diagram of the optical sensor of FIG. 6. As shown in FIG. 7, when a constant current flows, the optical sensor 511 receives light from a light emitting diode which emits this current as light. A light transmitting unit 511 ′, and a light receiving unit 511 ″ comprising a phototransistor, which converts light into a current when the light enters from the light emitting diode of the light transmitting unit 511 ′ and outputs the current to the central processing unit 5. Is done.

Hereinafter, the operation of the louver position sensing device according to the present invention constructed as described above will be described with reference to the accompanying drawings.
Optical sensor 51 for detecting the position of left / right rotating louver 6
Reference numeral 1 denotes a position of the left / right rotating louver 6 by detecting a hole of the position sensing plate 51 attached to one end of the left / right rotating louver link 15 and having a plurality of position sensing holes 512 formed therein. I do. Of the position sensing holes of the distance sensing sensor drilled in the position sensing plate 51 attached to the left and right rotating louver link 15, the last hole of the left and right rotating louver link 15 is defined as the initial position sensing hole 513, and distance sensing is performed. Detect the initial position of the sensor. This hole is formed so large that the optical sensor 511 can detect even if the position sensing plate 51 moves to the maximum.

The optical sensor 511 includes, as shown in FIG. 7, an optical transmitter 511 'for transmitting light, and an optical transmitter 511'.
An optical receiving section 511 ″ for receiving the light transmitted from the optical sensor 11 ′. A plurality of position sensing holes 512 formed in the position sensing plate 51 are provided with the optical transmitting section 511 ′ and the optical receiving section 5.
11 ", the light from the optical transmitter 511 'reaches the optical receiver 511" via the hole,
Phototransistor is turned on, the voltage of the input terminal P ₂ becomes low.

On the other hand, since the light transmitted from the light transmitting unit 511 'does not reach the light receiving unit 511 "in portions other than the position sensing holes 512 and 513 of the position sensing plate 51,
The phototransistor is turned off and the input terminal P ₂
Goes high. Sensing the position sensing holes 512 and 513 of position sensing plate 51 by the voltage of the input terminal P _2, seen the current position of the left and right rotary louvers 6.

Referring to the output waveform diagram of the optical sensor in FIG. 8, when the left / right rotating louver 6 reaches the initial position, the time during which the voltage of the input terminal P ₂ of the output of the optical sensor 511 is kept low is as follows. It becomes longer than when the left-right rotating louver 6 faces the other direction. Therefore, the input terminal voltage is maintained at a low level, and if it is longer than a predetermined time, it is detected that the left / right rotating louver 6 is located at the initial position. Then recognize.

A method for controlling the sensing of the louver position of the air conditioner according to the present invention having the above structure will be described with reference to the accompanying drawings. 9 and 10 are flowcharts for explaining the louver position sensing control method of the air conditioner of the present invention. The louver position sensing method of the central processing unit 5 firstly drives the left / right rotating louver motor 54 to rotate left / right. The louver link 15 is moved left and right (S91). Normally, the left / right rotating louver 6 moves leftward in directions 1, 2, 3, and 4 and then reversely rotates rightward in directions 5, 6, 7, and 8. Return to place. Then, set the initial position counter 0 (S92), the voltage at the input terminal P ₂ of the output of the optical sensor 511 determines whether a high (S93). As a result of the above determination, if the input terminal voltage is low, the set initial position counter is maintained at 0 until the input terminal voltage goes high, and if the input terminal voltage is high,
It is determined again whether the voltage of the input terminal becomes low (S9).
4). If the result of the above determination is that the voltage at the input terminal is low, the initial position counter is incremented by 1 (S95), and each time the voltage is low, the initial position counter is incremented by one. Each time the initial position counter is incremented by one, it is determined whether the initial position counter is equal to or more than a predetermined number (for example, 5) (S96). If the initial position counter is equal to or less than a predetermined number (for example, 5), it is determined whether the voltage of the input terminal is low again and the initial counter is increased. It is determined that the left / right rotating louver 6 is located at the initial position.

After sensing the initial position of the left / right rotating louver 6, a number of position sensing holes 512 are provided in the optical sensor 51.
Recognized to recognize that passes between the first transceiver unit, when detecting the rise time of the voltage of the input terminal P ₂ changes from low to high (S97), and the distance detecting sensor is facing in the direction 1 (S98). After detecting that the distance sensing sensor is located in direction 1 and then detecting a rising point at which the voltage of the input terminal changes from low to high (S99), it is recognized that the distance sensing sensor is located in direction 2. . When rise time of changing from the voltage of the input terminal P ₂ is low again high is sensed (S101), the distance detecting sensor is direction 3
(S102). After the distance sensing sensor recognizes that the input terminal is located in the direction 3, when the rising point at which the voltage of the input terminal changes from low to high is detected (S).
103), it is recognized that the distance sensing sensor is located in the direction 4 (S104).

The distance sensing sensor rotates in the reverse direction again from the direction 4, but after the distance sensing sensor recognizes that it is facing the direction 4, the voltage at the input terminal changes from high to low. When the time point is detected (S10
5) Recognize that the distance sensor is located in direction 4 (S106). Then, after the distance sensing sensor recognizes that it is located in the direction 4 and then detects again the falling point at which the voltage of the input terminal changes from high to low (S107), it recognizes that the distance sensing sensor is located in the direction 3. Yes (S10
8). After detecting that the distance sensing sensor is located in the direction 3 and detecting a falling point at which the voltage of the input terminal changes from high to low (S109), the distance sensing sensor detects the direction 2 direction.
(S110). Thereafter, when a falling point at which the voltage of the input terminal changes from high to low is detected (S111), it is recognized that the distance sensor is located in the direction 1 (S112), and the initial position of the distance sensor is detected again. Returning to the step (S92 to S94), the above operation is repeated.

[0020]

As described above, according to the air conditioner louver position sensing device and the control method thereof of the present invention, the position sensing plate of the distance sensing sensor having the position sensing hole formed between the optical transmitting and receiving units is arranged. In order to detect the louver position based on whether or not the light transmitted from the light transmitting unit is received by the light receiving unit via the position sensing hole on the position sensing plate, the rotation speed of the left-right rotating louver motor is determined. If the distance is not constant, the accurate direction of the distance sensing device can be sensed.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a general air conditioner.

FIG. 2 is a front view of the general air conditioner of FIG. 1;

FIG. 3 is a circuit diagram showing a detailed configuration of a position sensing unit of the distance sensing sensor of FIG.

FIG. 4 is a flowchart illustrating a position sensing method of a position sensing unit of the distance sensing sensor of FIG. 1;

FIG. 5 is a flowchart illustrating a method of detecting a position of a position sensor of the distance sensor of FIG. 1;

FIG. 6 is a perspective view for explaining a detailed configuration of the louver position sensing device of the present invention.

FIG. 7 is a detailed circuit diagram of the optical sensor of FIG. 5;

FIG. 8 is an output waveform diagram for distance sensing corresponding to the output of the optical sensor of the present invention.

FIG. 9 is a flowchart illustrating a louver position sensing control method for an air conditioner according to the present invention.

FIG. 10 is a flowchart illustrating a louver position sensing control method for an air conditioner according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Left-right rotating louver motor and cam 11 Position sensing part 15 Left-right rotating louver link 51 Position sensing plate 511 Optical sensor 512 Position sensing hole 513 Initial position sensing hole

Continuation of front page (56) References JP-A-2-306047 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) F24F 11/02

Claims (3)

(57) [Claims] 1. A method for sensing a louver position of an air conditioner having a plurality of holes for sensing the position of a left-right rotating louver according to a left-right movement of a link, wherein the link is moved left and right through a position sensing hole. of converting the step of sensing an initial position of the left and right rotary louvers signal to the received light being, after sensing the initial position, the signal from low to high for the light received via the position sensing Hall
Determining the next position when the signal is received, and transmitting light to the light received through the position sensing hole.
When the signal is changed from high to low, it is determined whether or not the next position is a position for rotating the left and right rotating louvers in a reverse direction. And reversely rotating to an initial position by determining the louver position sensing control method of the air conditioner. 2. A signal for light received through the position sensing hole outputs low when light is received through the hole and outputs high when there is no light received. The louver position sensing control method for an air conditioner according to claim 1 , wherein: 3. The method of sensing an initial position of the left / right rotating louver includes determining whether a signal for light received through the position sensing hole is converted from high to low and maintained for a predetermined time. The louver position sensing of claim 1 , further comprising: determining the initial position of the left and right louvers if a predetermined time is maintained as a result of the determination. Control method.