CN102538135A - Air conditioner - Google Patents

Abstract

The air conditioner of the present invention detects sound information and more accurately recognizes the user's activity state in the air-conditioned space, thereby performing energy-saving operation while taking operability and comfort into consideration. The air conditioner is equipped with a microphone (408) for receiving sound in the air-conditioned space, and also has: an amplifier for amplifying the sound signal detected by the microphone (408); and a frequency band extracting part for extracting a specific frequency band from the amplified sound signal. . In addition, a plurality of frequency band extraction means are provided to extract different frequency bands respectively.

Description

air conditioner

technical field

The present invention relates to an air conditioner, and more particularly to an air conditioner provided with a sound sensor for detecting sound in the air conditioner.

Background technique

The air conditioner circulates the indoor air in the heat exchanger, adjusts it through heating, cooling, dehumidification functions, etc., and blows the adjusted conditioned air into the room to temper the indoor air. In recent years, from the viewpoint of preventing global warming, energy-saving operation has been further demanded for air conditioners. In addition, with recent advances in sensor technology, various types of sensors have been installed. Various methods have been proposed, one of which is to provide an air conditioner with an acoustic sensor to improve operability, and to perform energy-saving operation while taking comfort into consideration.

As the prior art of devices including such an acoustic sensor, devices of Patent Document 1 to Patent Document 3 are disclosed as devices controlled based on signals detected by the acoustic sensor.

Patent Document 1 (JP-A-11-239310) discloses a remote control device that performs functions such as channel switching, volume adjustment, stereo switching, and sound muting of a television receiver at a position away from the television receiver. In the remote control device for remote control, there are one or more microphones (sound sensors) in the remote control device, and there is also a function to compare and output various data of the sound from the microphone stored in the memory in advance to make the volume of the TV receiver level optimal control signals to the CPU.

In Patent Document 2 (JP-A-6-19492), a voice recognition device is disclosed which includes: a feature extracting unit for extracting features of an input voice signal including noise that should be recognized; threshold value setting Unit, according to the noise parameter of the input level that changes correspondingly with the input of this sound signal, set threshold value; Input sound interval determination unit, according to the threshold value that is set by this threshold value setting unit, determine the effective sound of the sound that should recognize The sound mode of the section; the first standard sound pattern storage unit stores the standard sound pattern; the standard sound interval determination unit determines the standard stored in the above-mentioned first standard sound pattern storage unit according to the threshold set by the above-mentioned threshold value setting unit The sound interval of the sound pattern; the standard sound pattern making unit, making the standard sound pattern of the sound interval determined by the standard sound interval determining unit; The standard voice patterns created by the above-mentioned standard voice pattern creating means are compared and recognized.

In Patent Document 3 (Japanese Unexamined Patent Publication No. 2000-267690), the following sound detection device is disclosed, which includes: a sound frequency detection part that detects the frequency of the input sound and identifies whether it is within the set detection sound frequency range. Frequency within, output its recognition result; Input signal level detection part, detect the energy level of the input sound, compare whether to exceed the detection sound energy level threshold set, output its comparison result; Sound input judging part , according to the recognition result of above-mentioned sound frequency detection part and the comparison result of above-mentioned input signal level detection part, judge whether to input the sound that is suitable for sound detection condition, and output the first state signal correspondingly with judgment result; Sound duration measurement A component that measures the duration of the first state signal, compares whether it exceeds a set duration threshold, and outputs a second state signal corresponding to the comparison result.

Patent Document 1: Japanese Unexamined Patent Application Publication No. H11-239310

Patent Document 2: Japanese Unexamined Patent Publication No. 6-19492

Patent Document 3: JP-A-2000-267690

Conventionally, air conditioners have been proposed with various infrared sensors such as pyroelectric infrared sensors to identify the activity status of users in the air-conditioned space, improve comfort, and perform energy-saving operation.

However, depending on the surrounding environment and the movement of people, there may be cases where sufficient detection cannot be performed only by the infrared sensor. For example, there is a problem that when absence is detected for power saving, if the air conditioner is stopped and the air conditioner is turned off, the user sits and watches TV and does not perform any action for a certain period of time, and the user may mistakenly recognize absence as absence.

Therefore, in order to more accurately recognize the indoor environment and the user's action state, it is very meaningful to recognize the sound of the air-conditioned space. By recognizing the sound, the above-mentioned problems can be solved, and by recognizing that the vacuum cleaner is turned on, the air cleaning operation can be started to clean the dust scattered by the exhaust of the vacuum cleaner, and the convenience and comfort can be further improved.

However, the remote control device disclosed in Patent Document 1 detects the volume level and compares it with the data stored in the memory, and automatically adjusts the volume level of the television receiver in accordance with the environmental conditions, but there is no description of extracting the frequency band to determine the sound source. Content.

In addition, Patent Document 2 relates to a voice recognition device for recognizing human voices, and describes a means for determining an input voice signal including noise that should be recognized by changing an effective determination threshold value corresponding to the noise level. , but does not describe the content of determining the sound source based on the continuous time, intermittent time, regularity, irregularity, and detected ratio of the sound signal separated for each specific frequency band.

In addition, Patent Document 3 describes a unit capable of recognizing human voice signals with a simple structure, but does not describe the unit based on the continuous time, intermittent time, regularity, irregularity, detected scale to determine the content of the audio source.

Contents of the invention

Therefore, an object of the present invention is to provide an air conditioner capable of more accurately recognizing the activity state of a user in an air-conditioned space by detecting sound information, and performing energy-saving operation while taking operability and comfort into consideration.

In order to achieve the above object, the invention of claim 1 is characterized in that it is an air conditioner provided with a microphone for receiving sound in an air-conditioned space, and the air conditioner has an amplifier for amplifying the sound signal detected by the microphone. ; A frequency band extracting unit for extracting a specific frequency band from the amplified audio signal.

According to the present invention, it is possible to provide an air conditioner capable of more accurately recognizing the activity state of a user in an air-conditioned space by detecting sound information, and performing energy-saving operation while taking operability and comfort into consideration.

Description of drawings

Fig. 1 is a structural diagram of the air conditioner of this embodiment.

Fig. 2 is a side view when the indoor unit is stopped.

Fig. 3 is a front view when the indoor unit is stopped.

Fig. 4 is a side view of the indoor unit during heating operation.

Fig. 5 is a side view of the indoor unit during cooling operation.

Fig. 6 is a front view of the indoor unit during operation.

Fig. 7 is a bottom view of the indoor unit during operation.

Fig. 8 is a perspective view of a sensor module.

Fig. 9 is a perspective view in which the acoustic sensor is cut off at the mounting portion.

Fig. 10 is a perspective view in which the radiation sensor is cut off at the mounting portion.

Fig. 11 is a cutaway perspective view of the pyroelectric infrared sensor at the mounting portion.

Fig. 12 is a detailed view of the upper and lower wind panels at the front.

Fig. 13 is a side view of the acoustic sensor installation part when the front upper and lower air panels are closed.

Fig. 14 is a front view of the sensor installation part when the front upper and lower air panels are closed.

Fig. 15 is a front view of the sensor installation part when the front upper and lower air panels are opened.

Fig. 16 is a view of the filter cleaning mechanism viewed from the upper side.

Fig. 17(a) is a perspective view of the filter cleaning mechanism, and Fig. 17(b) is a perspective view showing only the brush.

Fig. 18 is an explanatory view of the operation of the filter cleaning mechanism.

Fig. 19 is a block diagram of a control section.

Fig. 20 is a table showing the relationship between activity content and activity amount.

21 is an example of frequency analysis of indoor sound, (a) is an example of frequency analysis of sound of an air conditioner, and (b) is an example of frequency analysis of sound of a vacuum cleaner.

22 is an example of frequency analysis of indoor sound, (a) is an example of frequency analysis of natural noise, and (b) is an example of frequency analysis of sound from a television receiver.

Fig. 23 is a diagram of a sound source judging module.

Fig. 24 is a sound source judgment flow executed by the activity level judging means.

FIG. 25 is a diagram explaining correction of a determination threshold due to ambient sound.

Fig. 26 is a diagram explaining the determination of combined activity.

Symbol Description

1: air conditioner; 2: indoor unit; 10: control components; 16: sensor module; 17: pyroelectric infrared sensor; 17a: Fresnel lens; 17b: pyroelectric cover; 18: radiation sensor; 19: sound sensor ;397: display unit; 400: HPF (frequency band extraction unit, filter circuit, high-pass filter circuit); 401: LPF (frequency band extraction unit, filter circuit); 402: differential circuit (frequency band extraction unit, filter circuit) ; 403: integrating circuit (band extracting part, filter circuit); 404: BPF (band extracting part, filter circuit); 405: differential circuit (band extracting part, filter circuit); 406: HPF (band extracting part, filter circuit); filter circuit); 407: comparator (analog-digital conversion circuit); 408: microphone; 41: activity level judging part (judging part); 42: temperature offset value setting part; 43: room temperature setting part; 44 : target temperature setting part; 45: air conditioning capacity control part

Detailed ways

Hereinafter, modes for implementing the present invention (hereinafter referred to as "embodiments") will be described in detail with reference to the drawings as appropriate. In addition, in each figure, the same code|symbol is attached|subjected to the common part, and overlapping description is abbreviate|omitted.

<air conditioner>

First, the structure of the air conditioner 1 of this Example is demonstrated using FIG. 1. FIG. FIG. 1 is a configuration diagram of an air conditioner 1 of the present embodiment.

The air conditioner 1 for indoor air conditioning is composed of the following parts: an indoor unit 2 installed indoors; an outdoor unit 6 installed outdoors; a remote controller 5 for remote control of the air conditioner 1; connecting the indoor unit 2 and the outdoor unit 6 Connect the piping 8 up.

The outdoor unit 6 includes a compressor 51 (see FIG. 19 ), an outdoor blower 53 (see FIG. 19 ), an outdoor heat exchanger (not shown), and the like. The compressor 51 and the outdoor heat exchanger of the outdoor unit 6 are connected to the indoor heat exchanger 33 (see FIG. 2 ) of the indoor unit 2 described later through two refrigerant pipes (not shown) connecting the pipe 8, and the refrigerant circulates and functions as a heat pump.

<Indoor unit>

Next, the indoor unit 2 constituting the air conditioner 1 of the present embodiment will be described using FIGS. 2 to 7 . Fig. 2 is a side view when the indoor unit 2 is stopped. Fig. 3 is a front view when the indoor unit 2 is stopped. Fig. 4 is a side view of the indoor unit 2 during heating operation. Fig. 5 is a side view of the indoor unit 2 during cooling operation. FIG. 6 is a front view of the indoor unit 2 during operation. Fig. 7 is a bottom view of the indoor unit 2 during operation.

As shown in FIG. 2 , the indoor unit 2 includes: an indoor heat exchanger 33 located at the central portion of the housing base 21; The indoor blower fan 311 of the indoor blower 52; the water receiving pan 35 that receives the condensed water condensed in the indoor heat exchanger 33.

In addition, on the housing base 21 of the indoor unit 2, basic internal structures such as filters 231, 231', vertical wind direction plates 291, 292, left and right wind direction plates 295, etc. are attached. These are covered with a decorative frame 23, and a front panel 25 is attached to the front of the decorative frame 23, whereby the indoor unit 2 is built in the housing 20 (refer to FIG. 1) composed of the housing base 21, the decorative frame 23, and the front panel 25. .

In this decorative panel 23, an air inlet 27 for sucking in indoor air and an air outlet 29 for blowing out air adjusted in temperature and humidity are provided up and down.

The air intake port 27 is composed of an upper air intake member 270 provided on the upper portion of the indoor unit 2 and a front air intake member 270 ′ provided on the front surface of the indoor unit 2 .

Here, the movable plate 251 provided on the front panel 25 is configured to rotate with a rotating shaft provided at the lower end as a fulcrum by driving a motor (not shown), and to open the front side air suction member 270' when the air conditioner 1 is in operation. (Refer to Figure 4, Figure 5). As a result, indoor air is sucked into the indoor unit 2 from the front air suction member 270' even when the air conditioner 1 is operating.

In addition, when the air conditioner 1 is stopped, the movable plate 251 is controlled to rotate and the front side air suction member 270' is closed (see FIG. 2 ).

The filters 231, 231' are configured to remove dust contained in the indoor air sucked in from the air suction port 27 (the upper side air suction part 270, the front side air suction part 270'), and cover the indoor heat exchanger 33 the suction side.

When the air conditioner 1 is in operation, as shown in FIGS. 4 and 5 , when the indoor blower fan 311 rotates, indoor air flows from the air inlet 27 provided in the indoor unit 2 to the indoor heat exchanger 33 . Then, the conditioned air whose temperature has been adjusted by the indoor heat exchanger 33 and whose humidity has been adjusted is blown out by the indoor blower fan 311 with a width approximately equal to the length of the indoor blower fan 311 , and flows through the air passage 290 . . Then, the conditioned air is deflected to the left and right by the left and right wind deflectors 295 arranged in the middle of the blowing air passage 290 , and further, is deflected in the vertical direction by the vertical wind deflectors 291 and 292 arranged on the air outlet 29 to be blown into the room.

The air outlet 29 formed on the lower side of the decorative frame 23 is arranged adjacent to the divided part of the front panel 25 and the decorative panel 23, communicates with the blowing air passage 290 inside the indoor unit 2, and is equipped with vertical airflow direction plates 291, 292, Left and right wind direction board 295.

The two vertical air deflectors 291, 292 (front vertical air deflector 291, rear vertical air deflector 292) use the rotation shafts provided at both ends as fulcrums, corresponding to instructions from the remote controller 5 (see FIG. 1 ), By driving a motor (not shown) to rotate to an angle required for the operation of the air conditioner 1, the air outlet 29 is opened, and this state is maintained (see FIGS. 4 and 5 ).

Moreover, when the operation of the air conditioner 1 is stopped, the vertical wind direction plates 291 and 292 are controlled to rotate, and the plates close the air outlet 29 (see FIG. 2 ). In addition, in a state where the vertical wind direction plates 291 and 292 are closed, the blowing air passage 290 is substantially blocked and connected to the bottom surface of the indoor unit 2 (see FIGS. 2 and 3 ).

Then, the front vertical air deflector 291 is arranged in front of the interior decoration surface 24, so that in the state where the front vertical air deflector 291 is closed, the air gap formed between the front air suction member 270' and the air outlet 29 is blocked. Interior finishing surface 24.

In addition, as shown in FIG. 2 , an auxiliary louver accommodating member 290 b is provided downstream of the blowing air passage 290 , and accommodates the auxiliary louver 291 d when the vertical louver 291 is closed such as when the operation is stopped.

Downstream of the blowing air path 290, the auxiliary louver housing part 290b is provided in a continuous manner with the wall 290a of the blowing air path, so that the front vertical louver 291 is slightly upward and the rear is vertically upward during extremely weak cooling or heating operation. The wind direction plate 292 is roughly closed, and the indoor air blower fan 311 of the indoor air blower 52 (refer to FIG. The blown air passes through the auxiliary louver accommodating member 290b as an extremely weak wind, and is gently diffused in the room to perform weak cooling or heating.

Furthermore, by using the auxiliary louver accommodating member 290b, the blown air (extremely weak wind) is immediately sucked in from the front side air sucking member 270', so that the drying operation of the indoor heat exchanger 33 and the deodorization of the interior of the indoor unit 2 can also be performed. Maintenance operation of the air conditioner 1 such as operation.

In addition, when the operation of the air conditioner 1 is stopped, as shown in FIG. As shown, the air conditioner 1 can have a simple appearance without unnecessary unevenness, without spoiling the atmosphere of the interior.

The left and right wind direction boards 295 are rotated to a desired angle by driving a motor (not shown) in response to instructions from the remote controller 5 (see FIG. 1 ) with the rotation shaft provided at the lower end as a fulcrum, and maintained in this state.

In this way, the indoor unit 2 of the air conditioner 1 rotates the vertical wind direction plates 291, 292, and the left and right wind direction plates 295 to required angles in response to the instructions from the remote controller 5, so that the conditioned air is deflected upward, downward, left, and right from the air outlet 29. Blow to the desired direction (refer to Fig. 4, Fig. 5).

In addition, the vertical louver 291, 292 and the left and right louver 295 are oscillated periodically during the operation of the air conditioner 1 by giving an instruction from the remote controller 5, thereby periodically blowing conditioned air over a wide range of the room.

As shown in FIG. 2 , the water receiving pan 35 is disposed below the lower ends of the front and rear sides of the indoor heat exchanger 33 , and is designed to receive condensation generated in the indoor heat exchanger 33 during cooling operation and dehumidification operation. water. The condensed water collected in the drain pan 35 is discharged to the outside through a drain pipe 37 (see FIG. 1 ) provided inside the connecting pipe 8 .

As shown in Figures 6 and 7, the indoor unit 2 is provided with a pyroelectric infrared sensor 17, a radiation sensor 18, and a sound sensor 19, and they are all installed in the inside of the front vertical wind direction plate 291 above the air outlet 29. The back of the decorative surface 24 (see FIGS. 4 and 5 ). In addition, in this embodiment, the pyroelectric infrared sensor 17, the radiation sensor 18, and the sound sensor 19 are mounted on the sensor module 16 (refer to FIG. The back of the interior decoration surface 24 (see FIG. 4 and FIG. 5 ) on the back side of the wind direction plate 291 . In addition, the sensor module 16 will be described in detail later.

As shown in FIG. 3 , a display member 297 (see FIG. 3 ) for displaying the operating status of the air conditioner 1 is disposed below the front panel 25 . In addition, as shown in FIG. 6 , the internal display member 22 is exposed in a state in which the front vertical louver 291 is opened. In addition, in this embodiment, the internal display part 22 is attached to the sensor module 16 (refer FIG. 8). In addition, the sensor module 16 will be described in detail later.

In addition, on the side surface of the rear vertical wind direction plate 292, there is arranged a transmitting and receiving unit 396 for transmitting and receiving infrared signals to and from the remote controller 5 (see FIG. 1 ), which is separated.

The indoor unit 2 includes a control unit 10 (see FIG. 19 ) for controlling the air conditioner 1 inside, and a microcomputer is provided in the control unit 10 . The microcomputer receives signals from various sensors such as the room temperature sensor (refer to FIG. 19 ), the humidity sensor 12 (refer to FIG. 19 ), the pyroelectric infrared sensor 17, the radiation sensor 18, and the sound sensor 19, and communicates with the remote control via the transceiver unit 396. The device 5 (refer to FIG. 1 ) sends and receives infrared signals. According to these signals, the microcomputer controls the indoor blower 52 (refer to FIG. 19 ), the driving motor (not shown) of the movable plate 251, the driving motors (not shown) of the vertical wind direction plates 291, 292, and the left and right wind direction plates 295. The drive motor (not shown) etc. are controlled, and the communication with the outdoor unit 6 is controlled, and the indoor unit 2 is collectively controlled.

<sensor module>

Next, the sensor module 16 in which the pyroelectric infrared sensor 17, the radiation sensor 18, the acoustic sensor 19, and the internal display member 22 are arranged will be described. FIG. 8 is a perspective view of the sensor module 16 .

As shown in FIG. 8, the sensor module 16 is provided with a pyroelectric type infrared sensor 17, a radiation sensor 18, an acoustic sensor 19, and an internal display part 22 (display window 22b). In addition, as shown in FIGS. 2 , 4 and 5 , the sensor module 16 is disposed on the back of the interior surface 24 .

The pyroelectric infrared sensor 17, the radiation sensor 18, the sound sensor 19, and the internal display part 22 are integrated and collected in one case to reduce costs and improve functions. That is, by mounting the sensors and the like on a common substrate (not shown) on which printed wiring is applied, wiring such as power supply wiring is simplified, handling is easy, and manufacturing cost is reduced. Furthermore, the pyroelectric infrared sensor 17, the radiation sensor 18, and the sound sensor 19 are collected in a narrow range, so the detection areas of each sensor are approximately equal, and sensors with different properties can be used to analyze the situation of the detection area approximately simultaneously and in various ways. By performing detection and analysis, the situation of the detection area can be grasped more accurately. Thereby, the accuracy of energy-saving operation, comfort operation, and automatic operation of the air conditioner 1 can be improved.

<sound sensor>

The sound sensor 19 receives the sound of the room (air-conditioned space) where the indoor unit 2 is installed.

As shown in FIG. 7 , the acoustic sensor 19 is disposed inside the air outlet 29 in the left-right direction of the indoor unit 2 , preferably at the approximate center of the air outlet 29 .

In addition, as shown in FIGS. 4 and 5 , the acoustic sensor 19 is arranged between the front side air suction member 270 ′ and the air outlet 29 in the up and down wind direction of the indoor unit 2 , and is ideally arranged at a position opposite the air outlet. The lowermost end 290c of the air duct wall 290a is further downstream to the front air suction part 270', and more ideally is arranged on the back of the interior decoration surface 24 from the auxiliary louver receiving part 290b to the front air suction part 270'.

FIG. 9 is a perspective view in which the acoustic sensor 19 is cut off from the mounting part.

The communication hole 24 b is provided in the interior surface 24 facing the acoustic sensor 19 thus provided, so that the sound in the room is efficiently transmitted to the acoustic sensor 19 . Therefore, the acoustic sensor 19 is hidden by the interior surface 24 and cannot be seen from the room. What can be seen from the room is only the small communication hole 24 opened on the interior decoration surface 24, which will not destroy the atmosphere in the room.

Here, the sound sensor 19 receives the operation sound of the air conditioner 1 (indoor unit 2 ) itself in addition to the sound in the room. When trying to grasp the indoor situation by sound, the operating sound of the air conditioner 1 (indoor unit 2 ) itself acts as noise. Therefore, it is necessary to prevent the sound sensor 19 from receiving operating sound as much as possible. Here, most of the operating sound of the air conditioner 1 (indoor unit 2) is the airflow sound caused by the indoor blower fan 311, and it is reduced by keeping as far away as possible from the indoor blower fan 311, sucking in the airflow, and blowing out the airflow. its impact.

In this embodiment, in order to minimize the operating sound of the air conditioner 1 (indoor unit 2) reaching the sound sensor 19, it is kept as far away from the indoor air supply fan 31 as possible to reduce the influence of the noise of the airflow blown out. At a position downstream of the lowermost end 290c of the wall 290a on the slower blowing air path, the sound sensor 19 is provided with a communication hole 24b for transmitting the sound in the room.

In addition, in the interior decoration surface 24 from the auxiliary louver receiving part 290b to the front side air suction part 270', a communication hole 24b for transmitting the sound in the room to the sound sensor 19 is provided so that the communication hole 24b is located away from the blown air flow and is located from the The depression angle of the acoustic sensor 19, which is likely to receive sound from an area with people, is in the range of 30° to 40° (see FIGS. 4 and 5 ).

Furthermore, in the left-right direction of the indoor unit 2, the acoustic sensor 19 is arranged in the approximate center of the air outlet 29 (refer to FIG. 7 ), whereby the communication hole 24b is located between the movable plate and the open movable plate when the indoor unit 2 is in operation. The farthest position of the suction airflow written at both ends of 251 can reduce the influence of the suction airflow.

In addition, if the ventilation resistance of the airflow increases due to dust remaining in the filters 231, 231', etc., the surge phenomenon of the indoor ventilation fan 311 is likely to occur. In this case, the surge phenomenon is mostly caused by the wing ends of the indoor blower fan 311, and by arranging the acoustic sensor 19 at the approximate center of the air outlet 29 (refer to FIG. 7 ), the surge phenomenon caused by the surge phenomenon can be reduced. The impact on the sound sensor 19 is caused.

In addition, when the indoor unit 2 (see FIG. 1) is installed at a corner where indoor walls intersect, it is considered that the detection accuracy of the acoustic sensor 19 is deteriorated due to the influence of the sound reflected from the adjacent wall. The distance from the adjacent wall to the sound sensor 19 ensures at least half of the length of the air outlet 29 of the indoor unit 2, so the deterioration of the detection accuracy of the sound sensor 19 can be suppressed, and the installation of the indoor unit 2 can be reduced. Harmful effects caused by echoes in indoor corners, etc.

In addition, a communication hole 24 b is provided on the bottom surface of the concave portion 24 a provided on the interior surface 24 . The recess 24b widens forward from the bottom to the front open end. Therefore, the sound reaching the room at the wide opening end is amplified while advancing toward the narrow bottom surface, reaches the communication hole 24b, and is received by the sound sensor 19 . Thereby, it is also possible to capture small sounds in the room, and to improve the sound receiving property.

<radiation sensor>

Fig. 10 is a cutaway perspective view of the mounting portion of the radiation sensor.

The radiation sensor 18, which is a type of infrared sensor, detects the temperature of the floor or wall surface in the room.

Like the sound sensor 19, the radiation sensor 18 is arranged inside the air outlet 29 in the left-right direction of the indoor unit 2, preferably at the approximate center of the air outlet 29 (see FIG. 7). In addition, the radiation sensor 18, like the sound sensor 19, is arranged between the front air suction member 270' and the air outlet 29 in the vertical direction of the indoor unit 2, and is preferably arranged at the lowermost end of the wall 290a from the outlet air path. Downstream of 290c to the front air intake part 270', it is more desirable to be disposed on the back of the interior decoration surface 24 from the auxiliary louver receiving part 290b to the front air intake part 270' (see Fig. 4, Fig. 5).

As shown in FIG. 10 , on the portion of the interior decoration surface 24 facing the radiation sensor 18 , like the acoustic sensor 19 , a front-wide recess 24 a is provided, and a small radiation opening 24 d is provided at the bottom thereof corresponding to the shape of the radiation sensor 18 . , to detect the temperature of the ground or wall in the room.

<Pyroelectric infrared sensor>

Fig. 11 is a perspective view in which a pyroelectric infrared sensor mounting part has been switched.

The pyroelectric infrared sensor 17 , which is one type of infrared sensor, detects the amount of activity of a person in the room from the heat of the person in the room. That is, the pyroelectric infrared sensor 17 utilizes the pyroelectric effect in which charges are generated in crystals and resins with a large dielectric constant due to temperature changes, and can detect infrared rays emitted from the human body in a non-contact manner. A Fresnel lens 17 a is provided before the pyroelectric infrared sensor 17 to intermittently input infrared rays to the pyroelectric infrared sensor 17 , thereby enabling detection of human motion.

Like the acoustic sensor 19, the pyroelectric infrared sensor 17 is arranged inside the air outlet 29 in the left-right direction of the indoor unit 2, preferably at the approximate center of the air outlet 29 (see FIG. 7). In addition, the pyroelectric infrared sensor 17, like the sound sensor 19, is arranged between the front side air suction member 270' and the air outlet 29 in the up-down direction of the indoor unit 2, and is preferably arranged on the wall 290a from the outlet air path. Downstream of the smallest end 290c of the front side air suction part 270', it is more ideal to be arranged on the back of the interior decoration surface 24 from the auxiliary louver receiving part 290b to the front side air suction part 270' (refer to Fig. 4, Fig. 5 ).

As shown in FIG. 11, the pyroelectric infrared sensor 17 requires a Fresnel lens 17a, and its size becomes large. Therefore, for the sensor module 16 , the pyroelectric cover 17 b made of an infrared ray transmissive material is installed in front of the pyroelectric type infrared sensor 17 . In addition, a pyroelectric opening 24c is provided in a corresponding portion of the interior surface 24, and when the sensor module 16 is mounted on the interior surface 24, the interior surface 24 and the pyroelectric cover 17b are formed so as to be integrated as viewed from the interior side. In addition, the shape is also formed by matching with the color, which becomes eye-catching from the inside.

<internal display part>

The internal display unit 22 has a function of displaying the operating status of the air conditioner 1 .

As shown in FIGS. 9 and 10 , the internal display unit 22 displays the operating status by turning on the display lamp 397a provided in the display opening 22a of the sensor module 16 covered by the display window 22b.

<Front up and down wind direction plate>

Next, the structure of the front vertical air deflector 291 will be described. FIG. 12 is a detailed view of the front vertical wind direction plate 291 .

The front vertical wind direction plate 291 of this embodiment includes a transparent member 291a formed of a transparent material, and an opaque member 291b having a size accommodated within the projected area of the transparent member 291a. In addition, the transparent member 291a is formed so as to extend greatly from the front end side of the front vertical wind deflector 291 .

That is, in the opaque member 291b of the present embodiment, an arm 291c extending while being inclined to one end side in the depth direction is formed on both sides and at the center of a thin-shaped base portion 291c having a depth dimension d3, and at the end of the arm 291e The front part forms the front up and down wind direction plate rotation axis 291f. Moreover, the auxiliary wind direction board 291d arrange|positioned in parallel with the base part 291c is provided between each arm 291e.

On the other hand, the transparent member 291a is a transparent thin member having a depth dimension d1. The transparent member 291a is formed so as to be substantially aligned with the end of the arm 291e, and protrudes toward the other end by a depth dimension d5 beyond the end of the opaque member 291b. In addition, the transparent member 291a is subjected to back printing on the range of the back surface that is in contact with the opaque member 291b.

That is, the transparent member 291a divides the back side into two parts in the depth wind direction, and prints on the back side of the arm 291e side that is the side of the rotation axis, and transparently forms the other end side that is the front end side with respect to the front vertical louver rotation shaft 291f. . As a result, the opaque member 291b, which is unnecessary in appearance, can not be seen. On the other hand, the front end of the front vertical louver 291 can be made transparent. oppressive feeling. For example, the opaque processing member 9 of the transparent member 291a (the part in contact with the opaque member 291b) may be covered so that the shaft supporting the front vertical louver 291 (the front vertical louver rotation shaft 291f) and the like cannot be seen. In addition, it is possible to make the pyroelectric infrared sensor 17, the radiation sensor 18, the sound sensor 19, and other additional functional components invisible.

Fig. 13 is a side view of the installation part of the acoustic sensor 19 when the front vertical wind direction plate 291 is closed. As shown in FIG. 13 , when the air conditioner 1 is stopped, the front vertical louver 291 can be accommodated adjacent to the lower end of the movable plate 251 covering the front of the front air suction member 270 ′. Therefore, when the front vertical louver 291 is housed, since the front end of the front vertical louver 291 is formed transparent, the user can see a part of the interior surface 24 through the transparent portion. In this embodiment, the internal display member 22 for displaying the operating state is formed in a band shape on the interior surface 24 visible to the user regardless of the operating state or the operating stop state. In addition, the pyroelectric infrared sensor 17 , radiation sensor 18 and acoustic sensor 19 that operate during operation are arranged on the back side of the interior surface 24 that is shielded by the front vertical louver 291 .

Fig. 14 is a front view when the front vertical wind direction plate 291 is closed. FIG. 15 is a front view when the front vertical wind direction plate 291 is opened.

As shown in Figure 14, when closing the front vertical air deflector 291, the top of the transparent member 291a of the front vertical air deflector 291 (refer to Figure 12), the display window 22b (refer to Figure 9), the display opening 22a (refer to 9 ), it is possible to recognize the on/off of the display lamp 397a (see FIG. 9 ) of the sensor module 16 (see FIG. 9 ), so that the display function of the display member 397 can be maintained and appropriate information can be delivered to the user. In addition, the timing for closing the front vertical air deflector 291 is not limited to the timing when the operation of the air conditioner 1 is stopped. Waste heat operation of the indoor heat exchanger 33 . In this case, the meaning of waste heat operation is displayed on the display member 397 (eg, displayed so that the user can recognize it from the position and color of the lit indicator lamp 397a). In addition, when the front vertical wind direction plate 291 is closed, the openings (pyroelectric opening 24c, radiation opening 24d, and communication hole 24b) of the pyroelectric infrared sensor 17, radiation sensor 18, and acoustic sensor 19 cannot be seen indoors. Simple appearance.

As shown in FIG. 15 , when the front vertical air deflector 291 is opened, the display window 22b of the internal display member 22 is exposed, and the on/off of the display lamp 397a (see FIG. 9 ) of the sensor module 16 (see FIG. 9 ) can be recognized. . In addition, the openings (pyroelectric opening 24c, radiation opening 24d, communication hole 24b) of the pyroelectric infrared sensor 17, the radiation sensor 18, and the acoustic sensor 19 are opened, and the front vertical wind direction plate 291 of the indoor living space is opened, The function of each sensor can be exerted.

In this way, the air conditioner 1 of the present embodiment is equipped with a shielding member ( The opaque member 291b) of the front up and down wind direction plate 291.

Thus, when the pyroelectric infrared sensor 17, the radiation sensor 18, and the sound sensor 19 are not in use (when the air conditioner 1 is stopped), as shown in FIG. 17. The radiation sensor 18 and the sound sensor 19 can have a simple appearance without unnecessary unevenness, without spoiling the atmosphere of the interior decoration.

In addition, since a part of the front vertical wind deflector 291 is used as a shielding member (opaque member 291b), a dedicated shielding member and a shielding member driving part are not required.

In addition, the internal display part 22 is covered by the transparent member 291a. However, when the operation is stopped, the front vertical wind direction plate 291 is erected at an angle close to the vertical to fit the frame body 20. When looking at it, only when the display lamp 397a of the sensor module 16 is not lit, the reflection on the surface of the transparent member 291a has a strong influence, and the internal display part 22 on the back cannot be seen. Decorate the atmosphere.

In addition, even in the state where the front vertical air deflector 291 is closed, if the indicator lamp 397a of the sensor module 16 is turned on, the operation display can be confirmed. Until the temperature rises, the front up and down wind direction plate 291 is always closed, and the operating state can be confirmed correctly even during the warm-up operation in which the indoor ventilation fan 311 does not operate.

<Filter cleaning mechanism>

Next, the cleaning mechanism of the filters 231, 231' will be described using Fig. 16 and Fig. 17 . Fig. 16 is a view of the filter cleaning mechanism 230 viewed from the upper side of the indoor unit 2, Fig. 17(a) is a perspective view of the filter cleaning mechanism 230, and (b) is a perspective view showing only the brushes.

Filter cleaning mechanism 230 includes sweeping mechanism 232 for cleaning filters 231, 231' with brushes 267, 267', and dust collecting members 280, 280' for storing the swept dust.

On both surfaces of the upper air suction member 270 (refer to FIG. 2 ) and the front air suction member 270 ′ (refer to FIG. 2 ) facing upstream of the indoor heat exchanger 33 (refer to FIG. 2 ), planar Filters 231, 231'. The filters 231, 231' are connected to the guide frame 234. The guide frame 234 has rails 235, 235' at the upper rear part and the lower front part, and a propulsion shaft 243 at the intersection of the filters 231, 231'.

The propulsion shaft 243 has a polygonal cross section, is supported by a bearing provided on the guide frame 234 , and is connected to a moving motor 242 fixed to the guide frame 234 via a gear attached to one end of a bearing 245 penetrating on one side. A screw 244 and a bracket 261 are loosely attached to the propulsion shaft 243 , and the screw 244 is provided on the guide frame 234 and engages with a rack 237 parallel to the propulsion shaft 243 .

Between the bracket 261 and the rails 235, 235 ′, the brush support frames 262, 262 ′ are respectively straddled across the filters 231, 231 ′, and the pair of filters 231, 262 ′ are installed on the brush support frames 262, 262 ′. 231 ' carries out the hairbrush 267,267 ' of cleaning.

When the moving motor 242 is rotated, the propulsion shaft 243 and the screw 244 are rotated, and the screw 244 is moved left and right along the frame 237 corresponding to the rotation direction of the moving motor 242 to move the bracket 261 . Thus, the brushes 267, 267 ′ move to clean while rubbing against the filters 231, 231 ′, sweep the dust on the filters 231, 231 ′ to the brushes 267, 267 ′, and move it to the The dust collecting parts 280, 280' on the left part of the guide frame 234 are guided.

The dust collecting members 280, 280' remove and accommodate the dust adhering to the brushes 267, 267'. In addition, it is also a cleaning member of the brushes 267, 267' for cleaning the brushes 267, 267' to prepare for the next cleaning.

Next, the configuration and operation of the filter cleaning mechanism 230 will be described using FIG. 18 . FIG. 18 is an explanatory view of the operation of the filter cleaning mechanism 230 .

On the right side of the filter 231, there is provided a standby means in which the brush 267 is on standby when the cleaning operation is not performed.

When performing the cleaning operation, the sweeping mechanism 232 (refer to FIG. 17 ) is activated to move the brush 267 (A in FIG. 18 ) that is on standby in the standby unit from right to left, so that the brush 267 sweeps the filter 231. (Refer to C of FIG. 18). Here, the bristle end of the brush 267 is in an open state (refer to A in FIG. 18 ) in the standby part, and when moving from the standby part to the filter 231, due to the inclination, the surface of the filter 231 touches it. The opposite component contacts while changing the side of the bristle end to deform, and rubs against the filter 231 reliably. In addition, B will be described later.

Brush 267 sweeps filter 231 while moving in the direction of dust collecting member 280 to sweep away dust 236 (see FIG. 18C ). The brush 267 that has finished the sweeping of the filter 231 passes through the D portion of FIG. , the hair brush 267 becomes clean. Then, the brush 267 moves from the left dust collecting part 280 to the right standby part without the bristle ends of the brush 267 rubbing against the filter 231 (see B of FIG. 18 ).

In addition, the operation of storing the dust removed by sweeping the filter 231 with the brush 267 in the dust collecting member 280 is described, but after storing the dust removed by sweeping the filter 231 ′ with the brush 267 ′, The same applies to the dust collecting member 280 ′, and description thereof is omitted.

By installing the filter cleaning mechanism 230 of such filters 231, 231 ′, for example, the filter cleaning mechanism 230 can be automatically operated corresponding to the accumulated operation time of the air conditioner 1, and the filters 231, 231 ′ can be cleaned without Excessive storage of dust in the filters 231, 231' can prevent the surge phenomenon of the indoor ventilation fan 311 caused when the excessive storage of dust in the filters 231, 231' can be prevented.

In this way, the air conditioner 1 of the present embodiment can prevent the surge phenomenon of the indoor blower fan 311 by installing the filter cleaning mechanism 230, and can be accurately detected by the sound sensor 19 for detecting indoor (air-conditioned space) sound. Therefore, it is a suitable structure for the purpose of inferring the activities of people in the room based on the sound in the room and performing operation control.

"Air Conditioner Control"

Next, an outline of the control of the air conditioner 1 according to this embodiment will be described using FIG. 19 . FIG. 19 is a block diagram of the control section 10 .

The indoor unit 2 of the air conditioner 1 includes a control unit 10 inside, and controls the indoor unit 2 and the outdoor unit 6 in response to information from various sensors and instructions from the remote controller 5 . Information from the room 900 is taken into the control unit 10 through the room temperature sensor 11, humidity sensor 12, remote control ambient temperature sensor 13, remote control position sensor 14, pyroelectric infrared sensor 17, radiation sensor 18, sound sensor 19, etc. An internal microcomputer (not shown) controls the air conditioner 1 based on various calculation results.

The room temperature sensor 11 is provided near the front air suction member 270' (see FIG. 2 ), and detects the temperature of the indoor air sucked into the indoor unit 2 from the air suction port 27 (referred to as "suction air temperature").

The humidity sensor 12 is provided near the front air suction member 270 ′ (see FIG. 2 ), and detects the humidity of the room air sucked into the indoor unit 2 from the air suction port 27 .

The remote control ambient temperature sensor 13 is provided in the remote control 5 (see FIG. 1 ), and inputs the detected temperature to the control unit 10 via the transmitting and receiving unit 396 (see FIG. 1 ).

The remote controller position sensor 14 is a transmitting and receiving unit 396 (see FIG. 1 ), and detects the position of the remote controller 5 (see FIG. 1 ) based on the direction of arrival of the infrared signal.

The control unit 10 includes an active mass determination unit 41 , a temperature offset value setting unit 42 , a target temperature setting unit 44 , and an air conditioning capability control unit 45 .

The activity amount judging part 41 has the following functions: according to the information of the pyroelectric infrared sensor 17 and the sound sensor 19, the activity amount of the indoor personnel is distinguished and judged in several stages as shown in the right side of Fig. 20, and Transfer to the temperature offset value setting part 42.

In addition to the active mass information from the active mass judging part 41, the temperature offset value setting part 42 is also based on the information from the above-mentioned various sensors (room temperature sensor 11, humidity sensor 12, remote controller ambient temperature sensor 13, remote controller position sensor 14, The radiation sensor 18 ), the information of the calendar information 15 having the calendar setting function provided inside the control unit 10 , calculates the temperature offset value, and transmits it to the target temperature setting unit 44 .

The room temperature setting part 43 is provided in the remote controller 5 (refer to FIG. 1 ), and the temperature (set temperature) set by the indoor personnel is input to the target temperature setting part of the control part 10 via the transmitting and receiving part 396 (referring to FIG. 1 ). 44.

The target temperature setting unit 44 calculates the target temperature based on the temperature offset value information from the temperature offset value setting unit 42 and the set room temperature information from the room temperature setting unit 43 , and transmits the target temperature to the air conditioning capability control unit 45 .

The air-conditioning capability control unit 45 sets the speed of the compressor rotation speed setting unit 46, the indoor blower speed setting unit 47, and the outdoor blower speed according to the target temperature from the target temperature setting unit 44, the intake air temperature information from the room temperature sensor 11, and the like. The component 48 sets the rotation speed of the compressor, the rotation speed of the indoor blower, and the rotation speed of the outdoor blower, and controls the compressor 51 , the indoor blower 52 , and the outdoor blower 53 .

Generally, the blown air from the air conditioner 1 circulates indoors, and the temperature of the intake air sucked into the air conditioner 1 (intake air temperature) is detected by the room temperature sensor 11. The way of target temperature is to change the rotation speed of compressor 51, indoor blower 52, and outdoor blower 53, to change the cooling and heating capacity, and to change the temperature of the air blown out by air conditioner 1, thereby adjusting the temperature of air conditioner 1.

At this time, the heating capacity and cooling capacity of the air conditioner 1 are controlled corresponding to the intake air temperature detected by the room temperature sensor 11 and the set room temperature set by the remote controller 5 (room temperature setting part 43). The intake air temperature of the air conditioner 1 (indoor unit 2) installed at a high place in the room is higher than the temperature of the living space at the height of the face from the floor of the room where the occupants are. The added set temperature obtained by adding the predetermined value (temperature offset value) calculated by the offset value setting unit 42 to the constant room temperature is set as the target temperature, and the air conditioner 1 is controlled so that the intake air temperature approaches the target temperature.

In addition, as a predetermined value, a value of about −1 to 5 degrees is used, which differs depending on the structure of the air conditioner 1 and the operation mode such as heating or cooling.

"How to judge the amount of activity of indoor people"

Next, a method of finely judging the amount of activity of a person in a room by combining the pyroelectric infrared sensor 17 and the acoustic sensor 19 , which is judged by the activity amount judging means 41 , will be described. Fig. 20 is a table showing the relationship between activity content and activity amount.

Human thermal sensation is known to be affected by temperature, humidity, air currents, radiation, amount of clothing and activity. The air conditioner 1 controls the temperature (and humidity) in the room so as to maintain comfort, but if the action (activity) of the person in the room changes, even if other conditions are the same, the person's warm feeling will also change, in order to maintain comfort , requesting to change the temperature (and humidity) etc. according to the action of the person. In order to correspond to this, the air conditioner 1 of this embodiment combines the pyroelectric infrared sensor 17 and the sound sensor 19 to obtain the activity state of the indoor occupants in a detailed manner. Control and perform energy-saving operation.

Conventionally, the technique of detecting the amount of activity of people in a room using the pyroelectric infrared sensor 17 , lowering the room temperature when the amount of activity is high, and increasing the room temperature when the amount of activity is small has been put into practical use. But, for only using the pyroelectric infrared sensor 17 and distinguishing the amount of activity of people in the room in multiple sections, since the sensitivity of the sensor is relatively low for detection error and motion towards the direction of the sensor, the individuality of the pyroelectric infrared sensor is not increased. Counting is difficult and increases the cost of the air conditioner 1 .

In addition, when a person is detected by the pyroelectric infrared sensor 17, if a person moves in the room, the output of the sensor changes, and the movement of the person in the room can be detected. In the case that the indoor people are not moving, since the output of the sensor does not change, it can be detected that the indoor people are not moving, but it is only based on the presence or absence of the indoor people's movement, and it is impossible to refine the degree of activity of the indoor people to judge.

In addition, there is a method in which a plurality of pyroelectric infrared sensors are installed in order to finely judge the amount of activity of the indoor occupants, and when the indoor occupants move substantially, the plurality of pyroelectric infrared sensors react and When the movement of the indoor personnel is small, only one sensor responds, thereby judging whether the activity of the indoor personnel is large or small.

However, in this method, a plurality of pyroelectric infrared sensors are required, which causes an increase in cost. Also, even if there are a plurality of pyroelectric infrared sensors, if the movement of the person in the room is smaller than the sensor can detect, there is a problem that the amount of activity cannot be determined when performing the same movement.

Use MET (Metabolic Equivalent) as the unit to represent the amount of human activity. The content of the activity and its approximate value are shown in Figure 20.

On the left side of FIG. 20 , as a comparative example, the classification of the amount of activity when only the pyroelectric infrared sensor 17 is used is described as an example. In this way, when only one pyroelectric infrared sensor 17 is used, even if the activity level is further subdivided into roughly three categories of large, medium, and small, the accuracy is insufficient for the above-mentioned reasons.

On the right side of FIG. 20 , an example is described in which the amount of activity is distinguished by using the pyroelectric infrared sensor 17 and the acoustic sensor 19 in combination. According to the present embodiment, since the amount of activity can be subdivided, it is possible to perform energy-saving operation in consideration of comfort in an air conditioner suitable for the amount of activity of people in the room.

<Judgement of activity level using sound sensor and pyroelectric infrared sensor>

If any activity is performed by the occupants in the room, an accompanying sound is generally produced. In this regard, by predicting various scenes in the room where the air conditioner 1 (indoor unit 2) is installed, it is possible to more accurately grasp the behavior of the people in the room based on the detection results of the pyroelectric infrared sensor 17 and the detection results of the sound sensor 19. activity level.

There are various kinds of sounds generated in the room where the air conditioner 1 operates, including the sound of the air conditioner itself, the sound of conversations between indoor o Sounds produced by people operating vacuum cleaners, cooking utensils, beauty utensils, etc., indoor people watching TV, radio, sound, music, sound effects, etc., clocks, sounds from fish tank pumps, etc. Even if no one is there voice etc.

These sounds can be classified into "sounds accompanying the activities of people in the room" and "sounds not related to the activities of people in the room". "Sounds unrelated to the people in the room" include the sounds of the air conditioner itself, TV, radio, audio equipment, music, sound effects, clocks, and the sound of the water pump of the aquarium. "Sounds accompanying the activities of people in the room" include sounds of conversation, clerical work, tailoring, simple tidying, vacuum cleaners, cooking utensils, beauty utensils, and the like.

Among the sounds handled as "sounds unrelated to the activities of people in the room", sounds that are emitted even when no one is present, such as the sound of clocks and fish tank pumps, should be regarded as the environment of the room where the air conditioner 1 is installed. For the sound of the sound, it is necessary to distinguish the superimposed sound of the air conditioner's own operating sound from other sounds.

Similarly, it is also necessary to treat the sounds of TV, radio, audio equipment, music, and sound effects that are different from the sound of the air conditioner itself as "sounds that have nothing to do with the activities of indoor personnel" as "sounds that have nothing to do with the activities of indoor personnel". Other sounds differ. Hereinafter, televisions and the like are referred to as a broadcast receiving device group.

In addition, in the case of using a vacuum cleaner or the like among "sounds accompanied by the movement of people in the room", the people in the room are also actively moving. Therefore, appropriate air conditioning is required, and it is necessary to distinguish it from other sounds. Hereinafter, devices such as vacuum cleaners that are actively used by indoor people are referred to as a group of devices for heavy housework.

Similarly, it is necessary to use the sound sensor 19 to very finely distinguish the amount of activity of the people in the room for the conversation in the "sound accompanied by the movement of the people in the room". If the voice of the conversation is low, it can be judged to be in a state of resting quietly. If the voice of the conversation is loud and continues without interruption, it can be flexibly considered that the person's activity level has also increased. Other sounds are mastered differently.

Similarly, in the case of using cooking utensils, beauty utensils, office equipment, etc. in the "sound accompanied by the movement of indoor people", since indoor people also use them while moving a little, it is necessary to use a group of heavy housework equipment. Situation, when taking a break while having a conversation with a quiet voice. Hereinafter, the equipments in which people in the room move slightly during use, such as cooking utensils, beauty utensils, and office equipment, will be referred to as light housework equipment group.

Therefore, the types of sound sources that should be discriminated are "the air conditioner itself", "broadcast receiving equipment group" such as TV, "heavy housework equipment group" such as vacuum cleaner, "light household equipment group" such as cooking utensils, and room occupants. The "session" between. It cannot be judged that their sound sources have intermediate motion and sound, so they are classified as "light housework equipment group".

Looking at the relationship between the types of these sound sources and the amount of activity (the value of MET) in Figure 19, TV, listening to music ... 1.0 MET, indoor cleaning ... 3.0 METs, cooking ... 2.0 METs, conversation, telephone It is not recorded in Fig. 19 but it is 1.0-1.8 METs, and the air conditioner itself does not change the amount of activity of the indoor personnel.

In this way, the activity level of the indoor occupants based on the type of sound source is in the order of housework-heavy equipment group ≥ light housework equipment group ≥ conversation ≥ broadcast receiving equipment group ≥ air conditioner itself.

In general, the behavior patterns of people indoors at home vary greatly, and it is difficult to predict them one by one. Therefore, the actions of the people in the room and the sounds in the room at that time are divided into the following two patterns.

First, when a person in the room moves and a sound accompanying the movement is generated, the change in internal body heat generation of the person in the room increases due to the movement. Hereinafter, the type of a sound source that emits a sound accompanying this movement is referred to as a "sound source with large temperature fluctuation".

Second, in the case where there is little movement of people in the room, there is little change in internal heat generation. Hereinafter, the type of sound source that emits a sound that does not accompany this movement is referred to as a "sound source with small temperature fluctuation".

When the sound in the room is caused by a small source of temperature fluctuation, the detection result of the pyroelectric infrared sensor 17 is divided into a plurality of stages, and the activity level of the people in the room is determined corresponding to the stage, and the air conditioner 1 is controlled.

In addition, when the sound in the room is caused by a sound source with large temperature fluctuations, if the volume of the sound is large, it is determined that the activity is active; The amount of activity of the indoor occupants determined as a result of the detection is judged to be a large amount of activity, and the air conditioner 1 is controlled.

In this way, according to the detection results of the sound sensor 19, the sound sources in the room are divided into a set of sound sources with small temperature fluctuations and a set of sound sources with large temperature fluctuations, and the activity of indoor people can be subdivided into more divisions. The control can produce power-saving effect while taking comfort into consideration.

In addition, as a sound source with a small change in temperature sensitivity, as mentioned above, a collection of broadcast receiving equipment groups such as air conditioners themselves, TVs, and radios can be considered. In addition to conversations, it is also possible to consider a collection of cooking appliances such as vacuum cleaners, fitness equipment, juicers, and mixers for housework, hair dryers, and beauty appliances such as electric razors.

In this case, the air conditioner itself and the conversation are independent sound sources, but for convenience of description, the air conditioner itself and the conversation are also represented as a group.

A collection of these sound sources with large temperature changes usually has a motor inside to support the user's strength, speed, etc. Among them, for heavy housework equipment such as vacuum cleaners and fitness equipment that require the strength of the user, the user himself has to devote a lot of activities, and the duration is relatively long.

For convenience, the group of devices other than the group of devices for heavy housework that does not require a lot of activity of the user and the group of devices other than the group of sound sources mentioned above are referred to as the group of devices for light housework.

In this way, the air conditioner itself and the broadcast receiving equipment group are regarded as a set of sound sources with small temperature fluctuations, and the heavy housework equipment group and the light housework equipment group are regarded as a collection of sound sources with large temperature fluctuations. According to the detection results of the sound sensor 19, it is determined Groups of indoor sound sources can be divided into a set of sound sources with small temperature changes and a set of sound sources with large temperature changes based on the determined group of sound sources, and the activity of indoor personnel can be subdivided into more divisions. More detailed control can produce power saving effect while taking comfort into consideration.

Thus, it can be seen that the sound signal received by the sound sensor 19 is divided into a plurality of frequency bands, and the magnitude, continuity, irregularity, regularity, intermittent interval, etc. of the sound of each frequency band are evaluated according to an appropriate index, and it is possible to compare Inexpensive and simple way to guess the type of sound source.

Brief description will be given using FIG. 21 and FIG. 22 . Figure 21 and Figure 22 are frequency analysis examples of indoor sound, Figure 21(a) is an example of frequency analysis of the sound of an air conditioner, Figure 21(b) is an example of frequency analysis of the sound of a vacuum cleaner, Figure 22(a) is an example of environmental noise Fig. 22(b) is an example of frequency analysis of TV sound.

As an example of the sound accompanying the movement of indoor people, it can be seen that the sound of the vacuum cleaner (group of heavy household appliances) in FIG. 21( b ) does not include all low-frequency to high-frequency sounds.

It can be seen that the human voice (conversation) shown in FIG. 22(a) has few high-frequency sounds, and low-frequency sounds around 11 kHz are pleasant and abundant compared to other parts.

In addition, it was also found that the sound of the vacuum cleaner was continuously heard (a group of heavy housework equipment), and the voice of a person was irregularly interrupted.

It can be seen that the sound of the air conditioner itself shown in FIG. 21( a ) is usually low in both low frequency and high frequency as an example of sound not related to the movement of people in the room.

As an example of sounds that are not related to the activities of people in the room, it can be seen that the sound of the TV (broadcast receiving equipment group) shown in FIG. High-frequency sounds are included, and there are much more high-frequency sounds above 4 kHz than human voices (see FIG. 22( a )).

Here, the characteristics of each sound source group are compared and discrimination is attempted. In the state where there is no sound accompanied by the activities of the people in the room, the sound (such as the sound of the wall clock, the sound of the circulating water pump of the fish tank, the sound of the air conditioner itself, etc.) is detected even in an empty room. The volume of the sound is minimal.

In this case, low-frequency sounds and high-frequency sounds are also continuously detected as low-level, with regular results.

Accordingly, when the sound sensor 19 detects the sound in the room as a result of being less than a predetermined level and continues regularly, the group of sound sources is determined to be "the air conditioner itself".

Next, when a person in the room uses a vacuum cleaner to clean the room, the sound in the room is neither the conversation nor the TV, but only the sound of the vacuum cleaner.

In this case, low-frequency sounds and high-frequency sounds are also continuously detected as high levels, and are the result of regular and almost no level changes.

As a result, the sound sensor 19 detects the sound in the room as a result of a predetermined level or more, and when the substantially same level continues regularly, the group of sound sources is determined to be a "housework-heavy appliance group".

Next, when people in the room are watching TV, radio, etc., or when people in the room are having conversations, human conversations are irregular, and generally there are many low-frequency sounds, and there are long interruptions. Thereby, it can be distinguished from the above-mentioned voices of "the air conditioner itself" and "a group of heavy-duty appliances".

Here, it is difficult to judge whether the sound source is a "broadcast receiving equipment group" such as a TV or a radio, or a real "conversation" among people in a room, even if focusing on the low frequency band. However, in broadcasting, unlike conversations, there are few cases of continuous silence for a long time, and high-frequency sounds that are not present in real "conversations" are added due to advertisements and sound effects added midway.

By combining these features, a "broadcast receiving device group" and a "session" can be discriminated.

According to the above discrimination procedure, the "air conditioner itself", the "household-heavy device group", the "broadcast receiving device group" or the voice not judged as "conversation" are distinguished from the "light housework-use device group".

<Structure of sound sensor>

In this way, the signal detected by the acoustic sensor 19 is separated and extracted for each frequency band, and used for judgment. The configuration of the acoustic sensor 19 will be described using FIG. 23 . Fig. 23 is a block diagram of sound source determination.

The sound signal in the room is captured by the sound sensor 19, that is, the microphone 408, and converted into an electric signal.

The detected sound signal is a tiny signal, so it needs to be amplified. However, in a product such as the air conditioner 1, which requires a large power and further has a circuit driven by high frequency such as an inverter circuit and a switching power supply circuit, power supply noise, switching The noise is also relatively large, so the noise is easily superimposed on the audio signal, and if the amplification is performed as it is, there is a problem that the amplification is performed while the noise is superimposed.

Therefore, in this embodiment, the mounting position of the microphone 408 is provided on the same board as the amplifier, and a high-pass filter (HPF 400 ) for removing power supply noise with a frequency higher than that of the commercial power supply is provided near the microphone 408 (for example, using a commercial power supply). 100kHz or more of the double cycle of the power frequency 50kHz), and the high-frequency removal low-pass filter (LPF) 401 (for example, shielding frequencies above 15kHz) that shields unnecessary high-frequency bands when judging the sound source, to suppress noise.

In addition, LPF 401 is constituted by an operational amplifier, and functions as an amplifier for amplifying an audio signal detected by microphone 408 .

The audio signal passing through HPF400 and LPF401 is input to a plurality of filter circuits composed of differentiating circuits or integrating circuits based on operational amplifiers. In addition, by using an operational amplifier, the audio signal can be amplified simultaneously with filtering, so the number of components can be reduced, and the operational amplifier can be used to amplify in stages, thereby improving noise performance and dispersing offset voltage.

In addition, in this embodiment, a differential circuit or an integrating circuit based on an operational amplifier is used as a filter circuit and an amplifier at low cost, but it is also possible to provide a filter circuit and an amplifier separately, and to combine a transistor and an active components to reduce the amplifier, or use a general-purpose audio amplifier for the amplifier. In addition, for filter circuits, digital filters, RC integrators based on resistors and capacitors, RCL passive filters that combine inductors, capacitors, and resistors, and general-purpose digital filter ICs can also be installed in arithmetic processing The A/D converter of the component performs Fourier transform, etc., and the filter circuit is configured according to the cost, peripheral components, etc., and the device of the amplifier and the filter circuit is not limited.

In this embodiment, the audio signal is divided into two frequency bands.

One is composed of a differentiating circuit 402 and an integrating circuit 403, and a band-pass filter (BPF) 404 (for example, passing 1 kHz to 4 kHz) that passes a low frequency band close to the human voice.

The other is a high-pass filter (HPF) 406 (for example, 5 kHz or higher) which is constituted by a differentiating circuit 405 and passes a high-frequency band in which a human voice cannot be emitted, such as a mechanical sound such as a vacuum cleaner.

In addition, the output of each of these filter circuits (BPF404, HPF406) is converted into a digital signal by the comparator 407 provided in the subsequent stage. In this way, by mounting the microphone 408, the filter circuit (HPF400, LPF401, BPF404, HPF406), the amplifier (operational amplifier), and the comparator 407 on the same substrate, the digital data of the two systems converted by the comparator 407 The signal is output to the control section 10 to suppress noise.

In addition, when the amplifier is amplified by the operational amplifier, if noise is generated on the power supply line of the operational amplifier, the amplification factor changes and appears as noise in the audio signal. Therefore, an electrolytic capacitor (not shown) for suppressing power supply noise may be provided on the same substrate to stabilize the power supply to the operational amplifier of the filter circuit.

In addition, by setting the threshold converted into a digital signal by the comparator 407 so that it cannot be surpassed only by the operating sound of the air conditioner 1, it is possible to prevent malfunction due to the operating sound of the air conditioner itself. The sound signal is input to the control unit 10.

In addition, in the present embodiment, as described above, the audio signal is divided into two frequency bands, but it is also possible to set the frequency bands in consideration of the objects to be detected, the number of objects to be detected, board mounting space, and cost. There is no limitation to the configuration of the modification and the plurality of filter circuits.

In addition, in this embodiment, it may be configured so that the display lamp is turned on in conjunction with the detected sound signal (see FIG. 1 ). This enables the user to visually recognize that the microphone 408 has detected the audio signal. In addition, there is an advantage that in the unlikely event that a peripheral circuit such as the microphone 408 or a filter circuit fails, a repair operator can easily confirm the failure. In addition, due to the failure of the above-mentioned microphone 408, amplifier circuit, etc., the sound signal taken into the control unit 10 (activity level determination unit 41) is very small, or under the situation that there are few, the buzzer equipped in the air conditioner 1 (not shown) sounds, and by detecting the sound of the buzzer, abnormalities in peripheral circuits such as the microphone 408 and the amplifier can be detected, and maintenance operators can easily confirm them.

<Sound source judgment method>

Next, the sound source determination method performed by the activity level determination unit 41 will be described using FIG. 24 .

In step S101, the activity amount judging section 41 performs sound sampling.

Specifically, the sound in the room is separated and extracted by the sound sensor 19 into a low-frequency sound (for example, 1 kHz to 4 kHz) and a high-frequency sound (for example, 5 kHz).

In addition, for each frequency band, sampling is performed for a predetermined time in accordance with a predetermined sampling period, and the ratio (BP) of the detection frequency of the sound in the low frequency band and the ratio (HP) of the detection frequency of the sound in the high frequency band are calculated, As a result of one sampling. This sampling is performed multiple times (m times) to obtain sampling results BP ₁ -BP _m , HP ₁ -HP _m .

In addition, in the following judgments, the sound level is judged according to the magnitude of the sampling results (BP ₁ to BP _m , HP ₁ to HP _m ).

In addition, the continuity of sound is judged based on whether or not all the sampling results (BP ₁ to BP _m , HP ₁ to HP _m ) are on the side of a predetermined threshold determined for each sound source group.

Depending on whether the difference between the upper limit and lower limit of the sampling results (BP ₁ to BP _m , HP ₁ to HP _m ) and the average value of the sampling results (BP ₁ to BP _m , HP ₁ to HP _m ) is located for each sound source group Determine the regularity of the sound within the specified judgment range.

Based on the sampling results (BP ₁ to BP _m , HP ₁ to HP _m ), whether the number of times above the predetermined judgment threshold value determined for each sound source group is above the predetermined lower limit number of times threshold value determined for each sound source group, and is the upper limit The irregularity of the sound is judged by determining whether the series of times below the threshold value, and furthermore, the number of times above the threshold value is interrupted in the middle.

Also, based on the sampling results (BP ₁ to BP _m , HP ₁ to HP _m ), the number of times greater than or equal to a predetermined threshold determined for each sound source group is less than or equal to a predetermined upper limit frequency threshold determined for each sound source group, and is the threshold value. Whether the series of the above times is interrupted in the middle, and the upper limit and lower limit of the sampling results (BP ₁ to BP _m , HP ₁ to HP _m ) and the average value of the sampling results (BP ₁ to BP _m , HP ₁ to HP _m ) It is judged whether the sound has a longer interruption or not based on whether the difference of the difference exceeds the prescribed judgment amplitude threshold value determined for each sound source group.

In addition, in the following description, the average value of the sampling results (BP ₁ to BP _m ) in the low frequency band is BP _mean , and the maximum value of the sampling results (BP ₁ to BP _m ) in the low frequency band is BP _max , Let the minimum value of the sampling results (BP ₁ ~BP _m ) in the low frequency band be BP _min , let the average value of the sampling results (HP ₁ ~HP _m ) in the high frequency band be HP _mean , let the sampling results in the high frequency band The maximum value of the results (HP ₁ to HP _m ) is HP _max , and the minimum value of the sampling results (HP ₁ to HP _m ) in the high frequency band is HP _min .

In step S102, the activity level judging means 41 judges whether or not the sound source is "the air conditioner itself". Specifically, when the size of the sampling results (BP ₁ to BP _m , HP ₁ to HP _m ) is less than the air conditioner judgment threshold (BP _a , HP _a ) in the entire sampling period, the type of sound source is judged as "The air conditioner itself".

When the above judgment conditions are satisfied in step S102, the process proceeds to step S103, and the activity level judging means 41 judges that the sound source is "the air conditioner itself". On the other hand, when the above-mentioned determination condition is not satisfied, it progresses to step S104.

In step S104, the active mass judging unit 41 judges whether or not the sound source is a "housework-heavy device group". Specifically, when the size of the sampling results (BP ₁ to BP _m , HP ₁ to HP _m ) is greater than or equal to the housekeeping appliance group judgment threshold (BP _h , HP _h ) throughout the sampling period, the average value of the sampling results (BP _mean , HP _mean ) and the minimum value of the sampling result (BPmin, HPmin) are within the judgment range of the household equipment group (BW _c , HWc), the maximum value of the sampling result (BP _max , HP _max ) and the sampling result When the difference between the mean values (BP _mean , HP _mean ) of , is within the household equipment group determination range (BW _c , HW _c ), the type of sound source is determined as "household equipment group".

When the above judgment conditions are satisfied in step S104, the process proceeds to step S105, and the activity level judging unit 41 judges the sound source as "a group of devices for heavy housework". On the other hand, when the above-mentioned determination condition is not satisfied, it progresses to step S106.

In step S106, the active mass judging unit 41 judges whether or not the sound source is "broadcast receiving device group". Specifically, the number of times the sampling results (BP ₁ to BP _m , HP ₁ to HP _m ) are above the broadcast receiving device judgment threshold (BP _t , HP _t ) is the lower limit number of times threshold (BL _t , HL t ) of the broadcast receiving device group _t ), and the upper limit frequency threshold (BH _t , HH _t ), and the number of times the broadcast receiving device judgment threshold (BP _t , HP _t ) is interrupted in the middle, the type of the sound source is judged It is "broadcast receiving equipment group".

In step S106, when the said determination condition is not satisfied, it progresses to step S107, and the activity level determination part 41 determines a sound source as a "broadcast receiving apparatus group". On the other hand, when the above-mentioned determination condition is not satisfied, it progresses to step S108.

In step S108, the active mass judging section 41 judges whether or not the sound source is in "conversation". Specifically, the number of times the sampling results (BP ₁ to BP _m , HP ₁ to HP _m ) are equal to or greater than the conversation judgment threshold (BP _s , HP _s ) is greater than or equal to the lower limit number of conversation thresholds (BL _s , HL _s ), and When the connection of the number of times below the upper limit number threshold (BH _s , HH _s ) and more than the conversation judgment threshold (BP _s , HP _s ) is interrupted midway, the type of sound source is judged as “conversation”.

In step S108, when the said determination condition is satisfied, it progresses to step S109, and the activity level determination part 41 determines a sound source as "conversation".

On the other hand, when the above-mentioned determination conditions are not satisfied, the process proceeds to step S110, and the activity level determination unit 41 determines the sound source as "a group of devices for light household chores". In addition, if the voice of the conversation is loud and the voice of the speech continues continuously, it is not judged as a conversation, but in this case, the activity level of the person who is having the conversation also increases, which is different from the use of cooking utensils, beauty utensils, and office work. Since the amount of activity is the same as that of the equipment group for light housework such as equipment, the control of the air conditioner 1 is regarded as using the equipment group for light housework.

Next, correction of the judgment thresholds (thresholds used in S102 , S104 , S106 , and S108 ), which play an important role in judging the sound source from the sampling results, will be described using FIG. 25 . FIG. 25 is a diagram explaining correction of a determination threshold due to ambient sound.

Indoors, even when the people in the room are quiet, there are various sounds such as the sound of the water pump of the clock and the fish tank. The influence of the sound derived from its own sound. Therefore, in the air conditioner 1 of the present embodiment, when the operation is started, the sound of the occupants in the room when they are quiet is judged according to the flow shown in FIG. 24 .

When the air conditioner 1 is installed and initially operated, if this operation is the first operation, it will be operated or stopped in a quiet state, and the sound sensor 19 will measure the reference ambient sound of the reference ambient sound (for example, in a quiet environment). The measurement is carried out during 1 minute of operation in the state), and the initial value stored in the storage device (not shown) of the air conditioner 1 for each time period is substituted as the reference value.

The average of the sampling results at this time is referred to as an initial value, and compared with a reference value determined for the air conditioner itself (approximately coincides with the average value of the sampling results when operating in the same environment).

When the result of the comparison is that the reference value is less than the initial value, if the sound source is determined to be the air conditioner itself (refer to step S103), even if the room is quiet, it is considered to be an indoor sound other than the sound of the air conditioner itself. The ambient sound has an impact on the result, and the judgment threshold of each sound source is corrected.

When the sound source determination result is a sound source group other than the air conditioner itself, it is determined that the sound is not a meaningful sound such as the air conditioner itself or ambient sound, and the determination threshold value of each sound source is not corrected. If the result of comparison between the initial value and the reference value is that the reference value is greater than the initial value, since each sound source can be sufficiently recognized and judged from the current judgment threshold, the judgment threshold of each sound source is not corrected.

In this way, the air conditioner 1 of the present embodiment has a threshold correction unit (not shown), and the threshold correction unit sets a sound source type judgment threshold for judging the type of sound source based on the detection result of the sound sensor 19. In the room of machine 2), the determination threshold is corrected correspondingly to the measurement result (initial value) of the acoustic sensor 19 during the reference ambient sound measurement period during which the acoustic sensor 19 measures the reference ambient sound while it is running or stopped in a quiet state. The active mass judging part 41 judges the type of the sound source corresponding to the judgment threshold corrected by the threshold value correcting part (not shown), and judges the type of the sound source according to the detection result of the pyroelectric infrared sensor 17. Personnel activity.

Next, the operation of the pyroelectric infrared sensor 17 will be described.

The pyroelectric infrared sensor 17 captures changes in the amount of infrared rays from the room together with the Fresnel lens 17a. It responds heavily when there is active movement indoors and less when moving quietly. Utilizing these, the signal from the pyroelectric infrared sensor 17 is amplified by a band-pass filter (not shown) that extracts human movement, digitized by a comparator (not shown), and transmitted to the control unit 10 (moving Quantity judging part 41).

The active mass judging unit 41 samples the digital signal from the pyroelectric infrared sensor 17 during a sampling period (for example, 60 seconds) at a predetermined sampling period (for example, 10 ms), and calculates the response in the sampled data. The proportion of detection data is obtained to obtain the reaction detection proportion Px.

When the reaction detection ratio Px is less than the quietness judgment threshold Pb for judging whether or not the amount of motion in the room is small, the reaction detection category is classified as "reaction: quiet".

Next, when the reaction detection ratio Px is equal to or greater than the motion judgment threshold Pv for judging whether the amount of motion in the chamber is large, the reaction detection category is classified as "reaction: strong".

When the reaction detection ratio Px is equal to or greater than the quiet judgment threshold Pb and less than the motion judgment threshold Pv, the reaction detection category is classified as "reaction: medium".

Next, a method of subdividing the amount of activity by combining the pyroelectric infrared sensor 17 and the acoustic sensor 19 will be described using FIG. 26 . Fig. 26 is a diagram explaining the determination of combined activity.

The active mass judging part 41 combines the reaction detection classification (quiet, strong, medium) based on the detection signal of the pyroelectric infrared sensor 17, and the sound source judgment based on the detection signal of the sound sensor 19 (the air conditioner itself, heavy household equipment group, radio, etc.). As shown in FIG. 26 , the results of receiving device groups, conversations, and light housework device groups) are subdivided into the activity levels of people in the room.

In addition, in FIG. 26 , the case of the air conditioner itself and the group of broadcast receiving devices (TV) are used as a set of small sound sources with temperature fluctuations, and the group of devices for heavy housework (vacuum cleaners), conversation, and group of devices for light housework (others) The situation is a collection of sound sources with large temperature fluctuations.

In this way, even if the reaction detection distinction based on the detection signal of the pyroelectric infrared sensor 17 is the same, in the case where the sound source is a collection of sound sources with large temperature fluctuations accompanied by the activities of the people in the room, the sound source is a temperature independent of the activities of the people in the room. The amount of activity is judged to be larger than the case of a sound source set with a small sensory change.

Thereby, the classification of the amount of activity becomes 5 to 6 steps from the previous three steps, so it can be controlled more finely than before.

In the example of FIG. 26 , it is assumed that the reaction detection classification of the pyroelectric infrared sensor 17 is "reaction: strong", and the type of sound source is a temperature-sensing variation consisting of a group of devices for heavy housework, a group of devices for conversation, and a group of light housework devices. The amount of activity is the largest in the case of a large sound source set. In addition, assuming that the reaction detection category of the pyroelectric infrared sensor 17 is "Reaction: Quiet" for the minimum amount of activity, and the sound source is a set of sound sources with small temperature fluctuations composed of the air conditioner itself and the broadcast receiving equipment group Activity is minimal.

Also, when the pyroelectric infrared sensors 17 have the same reaction detection divisions, the activity level is determined so that the activity level of the sound source set with small temperature fluctuations is equal to or greater than the activity level of the sound source set with large temperature fluctuations. In addition, when the set of sound sources of the sound sensor 19 is the same, the amount of activity is determined so that the relationship of "reaction: quiet"<"reaction: medium"<"reaction: strong".

During the cooling operation of the air conditioner 1 , when the activity of the indoor occupants is small, the indoor occupants are quiet and metabolically inactive, the body generates little heat, and the temperature of the indoor occupants changes to the cold side. Therefore, even if the room temperature is slightly raised, the comfort is within an allowable range, and energy-saving operation can be performed in a range where the room temperature is slightly raised.

In addition, during the heating operation of the air conditioner 1, when the activity of the indoor occupants is large, the indoor occupants are actively exercising and their metabolism is active, the body generates a lot of heat, and the warm feeling of the indoor occupants also changes to the hot side. Therefore, even if the room temperature is slightly lowered, the comfort is within an allowable range, and energy-saving operation can be performed corresponding to the amount of slightly lowering the room temperature.

The active mass determined by the active mass judging unit 41 is sent to the temperature offset value setting unit 42 , and the temperature offset value setting unit 42 sets the temperature offset value based on the active mass determined by the active mass judging unit 41 . In addition, the target temperature is set by the target temperature setting means 44 based on the temperature offset value. In addition, the compressor 51, the indoor air blower 52, and the outdoor air blower 53 are controlled by the air conditioning capability control means 45 so that the intake air temperature (the temperature detected by the room temperature sensor 11) approaches the target temperature.

In this way, in this embodiment, in addition to the pyroelectric infrared sensor 17, the sound sensor 19 is also used to judge the amount of activity in more detail, and the target temperature is set according to the amount of activity judged. (active state), an air conditioner 1 that is energy-saving while taking comfort into consideration.

Claims (15)

1. an air conditioner possesses the microphone that receives the sound in the conditioned space, and this air conditioner is characterised in that and comprises:

Amplifier is to being amplified by the detected voice signal of above-mentioned microphone;

Frequency band extracts parts out, from the tut signal that has amplified, extracts specific frequency band out.

2. air conditioner according to claim 1 is characterized in that:

A plurality of above-mentioned frequency bands are set extract parts out, extract different frequency bands respectively out.

3. air conditioner according to claim 2 is characterized in that:

Above-mentioned frequency band is extracted parts out and is had: the filter circuit of from the tut signal, extracting special frequency band out.

4. air conditioner according to claim 3 is characterized in that:

Above-mentioned filter circuit is made up of differential circuit or the integrating circuit based on operational amplifier, and the above-mentioned frequency band of double as is extracted parts and above-mentioned amplifier out.

5. air conditioner according to claim 4 is characterized in that:

Above-mentioned filter circuit is made up of a plurality of differential circuits or the integrating circuit that are connected in series, is divided into multistage ground and amplifies.

6. air conditioner according to claim 4 is characterized in that:

Above-mentioned filter circuit possesses: hold concurrently and amplify the integrating circuit with the inhibition of high-frequency noise.

7. according to any described air conditioner of claim 1～5, it is characterized in that:

To extracting the specific frequency band that parts are extracted out out, in 1kHz～4kHz scope, set the specific frequency band of above-mentioned extraction by above-mentioned frequency band.

8. according to any described air conditioner of claim 1～6, it is characterized in that:

Back level in the output of above-mentioned microphone possesses: circuit of high pass filter, the frequency of shielding source power supply is passed through its above frequency.

9. according to any described air conditioner of claim 1～6, it is characterized in that:

Possess: D converting circuit is transformed to data signal with the voice signal that is separated into specific frequency band.

10. air conditioner according to claim 9 is characterized in that:

In above-mentioned D converting circuit, with judging whether that the conversion threshold value that the tut signal of being imported is transformed to above-mentioned data signal and output is set at the value that under the situation of the operating sound of above-mentioned air conditioner monomer, can not surpass.

11. any described air conditioner according to claim 1～6 is characterized in that:

Possess: decision means; Continuous time, break time, systematicness, scrambling, the detected ratio of above-mentioned frequency band being extracted out the output of the voice signal that is separated into specific frequency band that parts extract out compare with the threshold value of storage in advance, judge source of sound.

12. any described air conditioner according to claim 1～6 is characterized in that:

Above-mentioned microphone and above-mentioned frequency band extraction parts are installed on the same substrate.

13. any described air conditioner according to claim 1～6 is characterized in that:

Above-mentioned microphone and above-mentioned amplifier are installed on the same substrate.

14. air conditioner according to claim 13 is characterized in that:

On the power line of above-mentioned microphone and above-mentioned amplifier, have and suppress the electrolytic capacitor that power supply noise is used.

15. any described air conditioner according to claim 1～6 is characterized in that:

Possess: display unit, from the tut signal, extracted specific frequency band out if above-mentioned frequency band is extracted parts out, then with the signal of above-mentioned extraction accordingly, show this situation.

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