JP6640487B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner.

  Air that can provide air conditioning that matches the environment by detecting the occupants in the air-conditioned room and changing the air-conditioning operation according to the distance to the person, the position of the person, the number of people, etc., using the camera provided in the air conditioner body. Harmonic machines are widely known.

  In addition, an infrared sensor composed of a plurality of elements provided in the indoor unit body of the air conditioner minutely measures the temperature in the air-conditioned room to detect an environment such as a temperature unevenness in the air-conditioned room, and performs an air-conditioning operation accordingly. An air conditioner that can improve indoor comfort by performing the above is widely known.

  In Patent Literature 1, a technology in which an air conditioner equipped with a far-infrared sensor performs air conditioning control according to the temperatures of floors and walls while determining the room shape such as the floor and walls of the room from the temperature distribution in the air conditioning room. Is disclosed.

JP 2010-91253 A

  In considering the comfort of the feet during heating, the inventors paid attention to the "life of taking off shoes in a room" unique to Japan. When heating, the "warmth / coldness (contact thermal sensation)" felt by the feet is important, and the contact thermal sensation affects the bodily sensation.

  According to the applicant's survey on the floor of LDK (living, dining and kitchen), about 50% of the living room has carpet laying, and about 70% has nothing on the dining side. is there.

  In addition, when relaxing in the living room in winter, about 70% of people spent bare feet and socks, and qualitative surveys said that "the winter floor is like ice" and "the floor is chilly and the body is cold" There are many.

  Considering Japan's unique lifestyle, the goal is "heating with flooring and living with bare feet." One of the issues to achieve this is that in LDK, there are carpets and tatami mats around the flooring, that is, floors with different "warmth and coldness" felt by the feet coexist. Is that the warmth is not enough to reach the floor enough to allow bare flooring.

  An object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to provide an air conditioner that can perform an appropriate air-conditioning operation according to an indoor environment.

In order to achieve the object, the air conditioner of the present invention includes a material detection unit that detects a material of a floor surface in a room, and a control unit that controls an air-conditioning operation based on the material detected by the material detection unit. When the detected material is a smooth first material (for example, flooring) at the time of heating, the control unit is a second hair which has more irregularities on the surface than the first material. It is characterized in that the amount of air blown to the floor made of the first material is increased as compared with the material (for example, carpet). Other aspects of the present invention will be described in embodiments described later.

  According to the present invention, an appropriate air-conditioning operation can be performed according to the indoor environment.

FIG. 2 is a diagram illustrating an external configuration of the air conditioner according to the first embodiment. It is a figure showing composition of an indoor unit concerning Embodiment 1. FIG. 2 is a diagram illustrating a configuration of a control unit of the air conditioner according to the first embodiment. It is a figure which shows the air-conditioning control which considered also the contact thermal sensation by the presence or absence of a floor material determination, (a), (b) is a case without floor material determination, (c) is a case with floor material determination. It is a figure showing the area division method of a room. FIG. 3 is a diagram illustrating a control block of a control unit according to the first embodiment. It is a figure which shows the control range of a vertical wind direction board, (a) is a side view, (b) is a top view. It is a figure which shows the control range of a left-right wind direction board. It is a figure showing a temperature detection range of a temperature detection means. It is a figure which shows the swing stop time of the left-right wind direction board based on floor surface temperature. FIG. 10 is a diagram illustrating a block configuration of a control unit according to a second embodiment. FIG. 9 is a diagram schematically illustrating a remote controller according to a second embodiment. It is a figure which shows the structure of the indoor unit which a vertical wind direction board has three blades in a longitudinal direction. It is a figure which shows the control range of the up-down wind direction board at the time of performing a futon / carpet dehumidification. It is a figure which shows the control range of a left-right wind direction board at the time of performing a futon / carpet dehumidification. FIG. 7A is a diagram illustrating a relationship between the surface shape of a detection target and the amount of reflected light received by an imaging unit, FIG. 7A illustrates a case where the surface roughness of the target is large, and FIG. It is a figure showing the case where surface roughness is small. FIG. 4 is a diagram illustrating an example of a wavelength absorption rate of a material of a detection target. FIG. 7A is a diagram illustrating a relationship between the absorption rate of a detection target and the amount of reflected light received by an imaging unit, FIG. 7A illustrates a case where the absorption rate of the target is low, and FIG. It is a figure showing the case where it is high. It is a figure which shows the method of removing the influence of the external light source by difference processing, (a) is a figure which shows the near-infrared image image | photographed by the imaging means in the environment where the material A and the material B were put on the floor surface, (b) is a diagram showing the x-coordinate transition of the luminance value before and after irradiation in the material detection area, and (c) is a diagram showing the x-coordinate transition when a difference is calculated from the luminance value before and after irradiation. It is. It is a figure which shows the correction | amendment by the image coordinate of the determination threshold value of a floor surface material. It is a figure which shows transition of the brightness | luminance difference value when an object exists in a room, (a) is a figure which shows the image image | photographed when there was an object in the center of a room, (b) is a figure which shows a detection area. FIG. 6 is a diagram showing a transition of the luminance value of FIG.

An embodiment for carrying out the present invention will be described in detail with reference to the drawings as appropriate.
<< Embodiment 1 >>
<Configuration of air conditioner>
FIG. 1 is a diagram illustrating an external configuration of the air conditioner according to the first embodiment. The air conditioner S is a device that performs indoor air conditioning such as cooling and heating using, for example, a heat pump technology. The air conditioner S is roughly divided into an indoor unit 100 installed on a wall, a ceiling, a floor, and the like in the room, an outdoor unit 200 installed on the outdoor and the like, and communicates with the indoor unit 100 by infrared rays, radio waves, communication lines, and the like. And a remote controller Re (remote controller, air conditioning control terminal) for the user to operate the air conditioner S. The indoor unit 100 and the outdoor unit 200 are connected to a refrigerant pipe and a communication cable (not shown).

  The remote controller Re is operated by the user, and transmits an infrared signal to the remote controller transceiver Q of the indoor unit 100. The content of the signal is a command such as an operation request, a change of a set temperature, a setting of a timer value, a change of an operation mode, a stop request, and the like. The air conditioner S performs an air conditioning operation such as a cooling mode, a heating mode, and a dehumidification mode based on these signals. Further, information such as room temperature information, humidity information, and electricity cost information is transmitted from the remote control transmitting / receiving unit Q of the indoor unit 100 to the remote control Re, and the user is notified of the information.

  Further, an imaging unit 110 for acquiring indoor image information, a near-infrared light projector 115, a visible light cut filter 117, and a temperature detection unit 120 are provided at a lower portion of a front surface of the indoor unit 100. The installation positions of the imaging unit 110, the near-infrared light projector 115, the visible light cut filter 117, and the temperature detection unit 120 can be changed according to the purpose of acquiring image information described later, and are not limited to the positions in FIG. In the present embodiment, the reason for providing the near-infrared light projector 115 and the visible light cut filter 117 is mainly to detect the material (floor material) of the floor, and the reason for providing the temperature detecting means 120 is to detect the temperature of the floor. This is for detecting the temperature, and details will be described later. In FIG. 1, the near-infrared light projector 115 is provided at one location, but may be provided at a plurality of locations of the indoor unit 100.

  FIG. 2 is a diagram illustrating a configuration of the indoor unit according to the first embodiment. FIG. 2 is a side sectional view of the indoor unit 100 at the position of the imaging unit 110. The housing base 101 houses internal structures such as a heat exchanger 102, a blower fan 103, and a filter 108. The heat exchanger 102 has a plurality of heat transfer tubes 102a, and heat exchanges air taken into the indoor unit 100 by the blower fan 103 with a refrigerant flowing through the heat transfer tubes 102a to heat or cool the air. It is configured as follows. The heat transfer tube 102a communicates with the above-described refrigerant pipe (not shown), and forms a part of a well-known refrigerant cycle (not shown).

  When the blower fan 103 shown in FIG. 2 rotates, indoor air is taken in through the air inlet 107 and the filter 108, and the air that has been heat-exchanged in the heat exchanger 102 is guided to the blow-out air passage 109a. Further, the direction of the air guided to the blowing air passage 109a is adjusted by the left and right wind direction plates 104 and the vertical direction plate 105, and is blown from the air outlet 109b to air-condition the room.

  The left and right wind direction boards 104 are rotated by a left and right wind direction motor (not shown) around a rotation shaft (not shown) provided at a lower portion in accordance with an instruction from a control unit 60 (see FIG. 3) described later. Is done. The vertical wind direction plate 105 is rotated by a vertical wind direction motor (not shown) about a rotation shaft (not shown) provided at both ends as a fulcrum according to an instruction from the control unit 60 described later. Thereby, the conditioned air can be sent to a predetermined position in the room.

  An imaging unit 110 and a visible light cut filter 117 are provided below the front panel 106 installed so as to cover the front of the indoor unit 100. The visible light cut filter 117 can be driven (moved) to the front of the imaging unit 110 by the filter driving unit 116. A near-infrared light projector 115 (see FIG. 1) and a temperature detecting means 120 (see FIG. 1) are installed at a position in a vertical direction on a paper surface (not shown).

  In this embodiment, it is desirable that the characteristic of the visible light cut filter 117 be a resin that attenuates a wavelength region of 750 nm or less, which is a visible light region. However, the cut wavelength may be appropriately changed in accordance with the near-infrared irradiation wavelength region to be photographed. Further, the visible light cut filter 117 is replaced with a band-pass filter to attenuate a certain wavelength or more, so that the receivable area of the imaging means of the near infrared wavelength is narrowed so that only a single wavelength area can be received. The configuration may be such that the influence of the light source is removed and the irradiation light from the near-infrared light projector 115 is easily received.

  The filter driving unit 116 has a function of executing a process of arranging the visible light cut filter 117 on the front surface of the imaging unit 110 and a process of arranging the visible light cut filter 117 outside the imaging range of the imaging unit 110. The filter driving unit 116 is driven by a motor provided inside the air conditioner S, for example, according to a drive signal of the control unit 60 (see FIG. 3) of the air conditioner S, and moves the visible light cut filter 117. Is possible.

  When a material detection instruction is given by the control unit 60, the filter driving unit 116 is controlled so that the visible light filter is arranged on the front surface of the imaging unit 110. In addition, for example, when a stepping motor is used, the filter driving unit 116 can detect the position of the visible light cut filter 117. The position of the visible light cut filter 117 may be detected by a method of detecting the position of the visible light cut filter 117 from an image captured by the imaging unit 110.

<Configuration of control unit of air conditioner>
FIG. 3 is a diagram illustrating a configuration of a control unit of the air conditioner according to the first embodiment. The sensor unit 50 is provided in the indoor unit 100 and the outdoor unit 200. The sensor unit 50 includes a room temperature sensor, a humidity sensor, a clock, an imaging unit 110, a temperature detection unit 120, an outside air temperature sensor, a compression temperature sensor, a refrigerant pipe temperature sensor, and the like.

  When the imaging unit 110 is a CCD (Charge Coupled Device) image sensor, the imaging unit 110 is installed at the lower part of the front panel 12 (see FIG. 2) at the center in the left-right direction. In addition, a thermopile, an infrared sensor, a near-infrared sensor, thermography, a pyroelectric sensor, an ultrasonic sensor, and a noise sensor may be used. What is detected by the imaging unit 110 is not limited to the presence or absence and position of a person, but may be the amount of activity, a life scene, a layout, or the like of a person.

  When the temperature detecting means 120 is a thermopile, for example, the width × length is composed of 1 × 1 pixel, 4 × 4 pixel, 1 × 8 pixel, and 8 × 8 pixel. Have been. In addition, an infrared sensor, a near-infrared sensor, and a thermography may be used. The temperature detected by the temperature detecting means 120 is not limited to the average surface temperature of the room, but may be the surface temperature of the floor surface, the surface temperature of the clothing of a person, the temperature of the skin of the person, the temperature of the foot, the temperature near the foot, the temperature of the person, Temperature of each part.

<Control unit>
The control unit 60 includes a floor plan detection unit 64 that detects a floor plan of the room in which the indoor unit 100 is installed, an area division unit 65 that divides the floor surface of the room into areas, based on the imaging information of the imaging unit 110, an imaging unit 110 Floor material detecting means 66 (material detecting section) for detecting the material (floor material) of the floor in the room based on the imaging information of the room, and the floor material for each area for discriminating the floor material for each area divided by the area dividing means 65 The discriminating means 67, the floor surface temperature detecting means 62 for each area which detects the temperature of the floor surface for each area divided by the area dividing means 65 based on the detection information of the temperature detecting means 120, and the human body based on the imaging information of the imaging means 110 Body detecting means 63 (human body detecting unit) for detecting the temperature of the floor material at the position of the person detected by the human body detecting means 63; With a 70, and the like. The control unit 60 is provided in the electrical component (in the electrical component box), and controls the blower fan 103, the left and right wind direction plates 104, the vertical wind direction plate 105, and the like of the indoor unit 100 based on information from the remote controller Re and the sensor unit 50. Control. Further, the control unit 60 controls the compressor 202 of the outdoor unit 200, the propeller fan 207, and the like. The control unit 60 also controls a filter driving unit 116 that rotates the imaging unit 110, the near-infrared light projector 115, and the visible light cut filter 117.

  The storage unit 70 includes, for example, a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. Then, the program stored in the ROM is read out by the CPU (Central Processing Unit) of the control unit 60, developed in the RAM, and executed.

  With the above configuration, the control unit 60 controls the operation of the air conditioner S in accordance with image information input from the imaging unit 110, command signals input from the remote controller Re, sensor outputs input from various sensors, and the like. The integrated control enables fine-grained operation control.

  By the way, the information handled by the control unit 60 includes detected floor material information, floor temperature information, information such as the position / activity of the occupant, and the detected shape / position / distance information of the object. There may be a configuration that does not include image information (visible light image) that can be visually recognized by a person as a video. As a result, not only can the amount of data held in the storage unit 70 be reduced, but also the image information is essentially not taken out of the control unit 60, so that the privacy of the occupants in the air-conditioned room is reduced. A configuration that can be protected can be realized.

  FIGS. 4A and 4B are diagrams showing air conditioning control in consideration of the contact thermal sensation depending on the presence or absence of a floor material determination. FIGS. 4A and 4B show a case without floor material determination, and FIG. 4C shows a case with floor material determination. It is. According to the investigation by the present inventors, the floor surface temperature at which human feet would not feel cool at room temperature of 24 ° C. during heating was 24.0 ° C. for carpet, 25.5 ° C. for flooring, and 1.5. There is a temperature difference of ° C. Thus, it was found that by controlling (controlling) the floor surface temperature to an appropriate temperature for each floor material, power saving and warm and comfortable heating from the feet can be achieved. This difference is due to the contact thermal sensation due to the difference in floor surface. Control is performed in consideration of the contact thermal sensation.

  As shown in FIG. 4, the indoor unit 100 is assumed to be installed on a wall 331. When a person is present at the same time in the living room of the carpet and the dining room of the flooring in the LDK, when the person is present at the set temperature of 24 ° C. (for example, the air temperature from the air outlet 109b is 36 ° C.) (A), the carpet surface temperature on the living side near the indoor unit 100 is 27 ° C., and the flooring surface temperature on the dining side far from the indoor unit 100 is 24 ° C., as shown in FIG. At room temperature of 24 ° C., the floor temperature at which the feet of a person do not feel cool is 25.5 ° C. with flooring. Under these conditions, a person who is present in the flooring feels cool on the flooring and feels uncomfortable. I feel.

  At this time, as shown in (b), the set room temperature is set at 27 ° C. (for example, from the air outlet 109 b) so that the person existing in the flooring has a floor surface temperature of 25.5 ° C. at which the flooring does not feel cool. When the air temperature is raised to 39 ° C.), the flooring surface temperature on the dining side far from the indoor unit 100 becomes 25.5 ° C., which is comfortable. However, the carpet surface temperature on the living side near the indoor unit 100 becomes 29.5 ° C., and the ambient temperature of the living side person becomes slightly hot. If only the set temperature is simply raised, it is too warm and wastes power consumption.

  On the other hand, in the case where the air conditioning control suitable for the floor material is performed as shown in (c), while the flooring surface temperature on the dining side far from the indoor unit 100 is set to 25.5 ° C., the living side close to the indoor unit 100 is set. The carpet surface temperature is 26 ° C., and the set room temperature can be lowered to 24 ° C. while both are comfortable.

  In the present embodiment, a floor material detecting unit 66 (material detecting unit) that detects a material of a floor surface in a room, and an air conditioning controlling unit 69 (control unit) that controls an air conditioning operation based on the material detected by the material detecting unit. And If the detected material is a first material (for example, flooring) during heating, the control unit compares the detected material with a second material (for example, carpet) having more irregularities on the surface than the first material. Thus, the amount of air blown to the floor of the first material can be increased. Therefore, an appropriate air-conditioning operation can be performed according to the indoor environment.

  Further, when the detected material is the first material (for example, flooring) at the time of heating, the control unit may include a second material (for example, carpet) having more irregularities on the surface than the first material. In comparison, it is preferable to increase the target temperature set on the floor of the first material. Specifically, in the flooring, the temperature is increased by about 1.5 ° C. as compared with the carpet.

  FIG. 5 is a diagram showing a method of dividing a room into areas. The floor plan (floor surface) of the room is detected by the floor plan detecting means 64, and the floor surface is divided into, for example, six in the horizontal direction (X direction) and the vertical direction (Z direction), and the floor of each divided area is divided. The material is determined. Regarding this division, there is no particular problem whether the X direction and the Z direction are divided into four or twelve, or the X direction is divided into twenty and the Z direction is divided into ten without any problem. Cost. If flooring and carpet coexist in the divided area, the one with the higher occupancy is used with priority. The part having the furniture is recognized as having the furniture, and the temperature control by the floor material of the part is not performed. However, if the occupied furniture in the area occupied by the furniture is air-permeable furniture and the temperature near the feet can be detected, it is considered the same as the material connected to the front, back, left and right flooring materials. Control is performed according to the floor material.

  The method of determining the material is as follows. By disposing the visible light cut filter 117 in front of the imaging unit 110, the light in the visible light wavelength band is attenuated (or reflected) by the visible light cut filter 117, and other than the visible light. Light in the wavelength band passes through the visible light cut filter 117. That is, light including ultraviolet light, near infrared light, and far infrared light passes through the visible light cut filter 117. At this time, near infrared rays are emitted from the near infrared projector 115 of the indoor unit 100, and the material of the floor is determined based on the reflectance. Details of the material determination method will be described later with reference to FIGS. Alternatively, it is also possible to set such a method that the special material determining means is not provided and the material of the floor is input by the remote controller Re for each divided area. The setting method using the remote control will be described later in a second embodiment.

  FIG. 6 is a diagram illustrating control blocks of a control unit according to the first embodiment. The floor plan detection unit 64 detects the floor plan of the air-conditioned room (room) from the image captured by the imaging unit 110. The floor plan detection unit 64 stores the floor plan detection result in the storage unit 70. The area division unit 65 divides the floor plan of the air conditioning room into areas. FIG. 5 shows the divided image of the area.

  Apart from the above, the floor material detecting means 66 determines the floor material from the image taken by the imaging means 110. At the time of floor material detection, as described above, the visible light cut filter 117 is disposed in front of the imaging unit 110, near-infrared light is emitted from the near-infrared light projector 115, and the floor material is determined based on the reflectance. I do. The floor material discriminating means 67 for each area performs the floor material discrimination for each area by matching the detected floor material with the floor plan divided into areas.

  Apart from the above, the human body detecting means 63 detects the position of the human body from the image taken by the imaging means 110.

  The floor surface temperature detecting means 62 for each area detects the temperature of each area from the temperature data acquired by the temperature detecting means 120.

  The floor material temperature determining means 68 at the position of the person determines the floor material at the position of the person and the temperature of the floor material, and determines whether or not the temperature has reached the target temperature for each material. The air-conditioning control means 69 performs air-conditioning control on the determination result. The air-conditioning control means 69 controls the left and right wind direction boards 104, the vertical wind direction boards 105, the set temperature, the air volume, and the like in accordance with the position of the person. Hereinafter, an implementation method will be described with reference to FIGS.

  7A and 7B are diagrams illustrating a control range of the vertical wind direction plate, where FIG. 7A is a side view and FIG. 7B is a plan view. In the heating operation, control is performed to direct the wind direction plate particularly near the feet of a person. Here, the depth direction (Z direction) of the room is divided into 10 in order to send the wind toward the feet of the person. The required swing range of the vertical wind direction plate 105 is determined based on which area of the ten divided areas has a person. For example, when there is a person at A3 and A7, the vertical wind direction plate 105 swings between A3 and A7. In addition, by swinging the range of the wind from A3 to A8, which is one range shorter than the range where the person is present, the warm air surely reaches the feet of the person, so that the comfort is further improved.

  FIG. 8 is a diagram illustrating a control range of the left and right wind direction boards. In the heating operation, control is performed to direct the wind direction plate to a place where a person is present. In FIG. 8, the control range of the left and right wind direction boards 104 is divided into 20, and the necessary swing range of the left and right wind direction boards 104 is determined based on which of the divided areas has a person. For example, when there are people at B3 and B6, the left and right wind direction boards swing between B3 and B6. Further, if the swing is stopped for about 2 seconds at the position where the person is, the comfort level is improved. Furthermore, when the swing range is not limited to B3 to B6 where a person is present, but is set to B2 to B7 which is one range wider than the range where a person is present, the warm air surely wraps around the area where the person is present, so the comfort level is further improved. Improves.

  At this time, if the person in B3 is on the carpet and the person in B6 is on the flooring, when swinging the left and right wind direction boards 104, first stop the swing at B6 where there is a person on the flooring. Time is further extended by 2 seconds.

  The area temperature at the feet of each person is detected, and the above-mentioned "surface temperature of the floor surface at which the feet of the person are not chilly" is set as an air conditioning control target value for each floor material. Change the swing stop time of the left and right wind direction boards for the area where there is.

  By combining the control of the upper and lower wind direction plates 105 and the control of the left and right wind direction plates 104 shown in FIGS. 7 and 8, it becomes possible to send comfortable warm air near the feet of a person.

  FIG. 9 is a diagram illustrating a temperature detection range of the temperature detection unit. With reference to FIG. 9, detection of a floor surface temperature by the temperature detection unit 120 will be described. When the temperature detecting means 120 is a thermopile, the thermopile detecting elements are one-dimensionally arranged heat receiving elements. By rotating the thermopile with the arrangement direction of the detection elements as a rotation axis, scanning is performed in a direction perpendicular to the arrangement direction of the detection elements. Thus, a two-dimensional radiant heat image of eight pixels in the vertical direction can be obtained. A thermal image of 20 × 8 pixels can be acquired at an angle of view of 150 ° in the scanning direction (horizontal direction) of the acquired image. From this temperature detection result, the floor material temperature at the position of the person is determined.

  FIG. 10 is a diagram illustrating the swing stop time of the left and right wind direction boards based on the floor surface temperature. With reference to FIG. 10, a description will be given of a time when the swing stop time of the left and right wind direction boards 104 is changed. If the target temperature has not been reached, 1 second is added, and after the target temperature is reached, no addition is made. Further, when the target temperature reaches + 1 ° C., 1 second is subtracted. By this control, the difference in bodily sensation due to the material of the floor is reduced.

  Further, the same can be performed with the vertical wind direction plate 105. However, since the vertical wind direction plate 105 is a wind direction plate that can be viewed from the outside, and stopping the vertical wind direction plate 105 halfway is unnatural, It is considered appropriate to add only the stop time at the upper limit position and the lower limit position of the swing on the plate 105 and not to stop halfway.

  In the present embodiment, it is possible to know the material of the floor surface with which the foot directly contacts in the "living of taking off shoes in a room" unique to Japan. Also, warm air suitable for the material of the floor at the position of the person can be delivered to each location. That is, it is possible to adjust the amount and time of blowing air in accordance with the material of the floor at the position of the person.

  For example, at the time of heating, conventionally, the carpet (second material) side is also heated similarly to the flooring (first material) side. In contrast, in the present embodiment, in order to suppress overheating on the carpet side, the amount of warm air sent to the carpet side is reduced, and the warm air is delivered to the flooring side accordingly, so that all the people in the room can use the floor material. It does not feel cold and can save energy.

<< Embodiment 2 >>
In the first embodiment, the floor material is detected by the floor material detecting means 66. In the second embodiment, a method of setting the floor material using the remote controller ReA (input unit) (see FIG. 12) will be described.

  FIG. 11 is a diagram illustrating a block configuration of a control unit according to the second embodiment. In FIG. 11, the same elements as those of the first embodiment shown in FIG. 6 are denoted by the same reference numerals, and overlapping description will be omitted. The user inputs the floor plan of the air conditioning room using the floor plan input unit 131, which is the input unit of the remote controller ReA, and sets the floor material for each area in the air conditioning room by the floor material setting unit 132. The input results of the floor plan and the floor material are stored in the storage unit 70 via the transmission / reception unit 45. The floor material determining means 67 for each area determines the floor material for each area based on the input result of the storage means 70.

  FIG. 12 is a diagram schematically illustrating a remote controller according to the second embodiment. It is assumed that the floor plan input unit 131 of the remote controller ReA is a touch panel unit. The storage unit of the remote controller ReA stores layout information for setting a floor plan, room size information, and element information of the indoor unit 100 and furniture around the living room. It has a setting mode. When a floor plan setting request is received, the processing unit of the remote controller ReA touches the selection screen based on the layout information, the selection screen based on the area information, and the arrangement request screen using the element information via the floor plan input unit 131 on the touch panel. Display in the section. Then, based on the screen operation of the touch panel unit, the floor plan information for installing the indoor unit 100 and the arrangement information of the indoor units 100 and furniture in the floor plan are registered in the storage unit as floor plan information of the user. In the setting of the floor plan, layout selection, area selection, the position of the air conditioner of the indoor unit 100 and the position of related furniture, and the direction of a living room, a living room, and the like can be set.

  After the completion of the floor plan input, the floor material setting unit 132 displays the type of the floor material. In FIG. 12, a carpet and a flooring are displayed as examples. Flooring is specified as the initial setting. When changing to a carpet, the user changes the flooring to a carpet by touching a predetermined area in the floor plan area 136 with a finger after touching the carpet portion 135 with a finger.

  In the present embodiment, the input of the floor plan of the air conditioning room and the setting of the floor material can be performed by the remote controller ReA. By having the remote controller ReA manually set, air conditioning control according to the floor material of the air conditioning room becomes possible without mounting a special sensor on the air conditioner.

<Other air conditioner examples>
FIG. 13 is a diagram showing a configuration of an indoor unit in which the upper and lower wind direction plates have three blades in the longitudinal direction. Compared with the indoor unit 100 shown in FIG. 2, the vertical wind direction plate 105 has an upper vertical wind direction plate and a lower vertical wind direction plate upper plate, and the upper vertical wind direction plate is roughly divided into three in the horizontal direction, It is composed of a left blade 105aa, a center blade 105ab, and a right blade 105ac. Similarly, the lower vertical wind direction plate is also roughly divided into three in the left-right direction, and is constituted by a left blade 105ba, a center blade 105bb, and a right blade 105bc.

  In an indoor unit in which the upper and lower wind direction boards are divided into three in the horizontal direction as shown in FIG. 13, one of the two persons is on the carpet and the other is on the flooring as shown in FIG. In this case, after detecting the position of the person and the material of the floor, two of the three upper and lower wind direction plates 105 are turned to the person on the flooring (first material). The other one points to the person on the carpet (second material). By performing this control, it becomes possible to warm the person in the flooring more quickly.

  For example, when the flooring warms up quickly and reaches the target temperature, for example, when the flooring is near the indoor unit 100, the person on the flooring is provided with a pair of upper and lower wind direction boards (for example, left blades 105aa, 105ba). One set of upper and lower wind panels (for example, right blades 105ac and 105bc) and the remaining upper and lower wind panels (for example, center blades 105ab and 105bb) are equalized by swinging between a person on the flooring and a person on the carpet. Can be achieved.

  If the floor materials at the position where the person is present are all the same, the control is performed with priority given to other influences. For example, two of the three divided upper and lower wind direction plates 105 are directed to a person who is far from the indoor unit. Point the other one at a nearby person. By performing this control, a person who is far from the indoor unit that is difficult to warm can be warmed more quickly.

  Note that the division of the vertical wind direction plate 105 in the left-right direction is not limited to three divisions.

  If the floor temperature relative to the room temperature does not reach the target temperature even after performing this control, the set temperature of the room is adjusted so that the floor temperature rises. Here, flooring and carpet are described as typical examples, but even in the case of tatami, detection is possible due to the difference in reflectance of near-infrared rays. The surface temperature of the carpet is 24.5 ° C, while the carpet is 24.0 ° C and the flooring is 25.5 ° C. When a tatami mat is detected, control similar to carpet flooring is performed.

<Example when performing dehumidification>
FIG. 14 is a diagram illustrating a control range of the upper and lower wind direction boards when performing the futon / carpet dehumidification. FIG. 15 is a diagram illustrating a control range of the left and right wind direction plates when performing the futon / carpet dehumidification. The floor material detecting means 66 detects the futon / carpet in the same manner as the floor material. With respect to the detected futon / carpet, the vertical wind direction plate 105 is swung as shown in FIG. At this time, the vertical wind direction plate 105 is an example in a case where the vertical wind direction plate 105 is divided into three in the horizontal direction shown in FIG. The upper and lower wind direction boards 105 are swung in accordance with the futon / carpet existing in the area in charge of each of the upper and lower wind direction boards 105, and the wind is evenly sent to the targeted futon / carpet.

  Here, the bedding / carpet on the right is between A5 and A8. The left bedding / carpet is between A2 and A5. Since both of them also overlap the area assigned to the center blades 105ab and 105bb, the center blades 105ab and 105bb swing between A2 and A8, the right blades 105ac and 105bc swing from A5 to A8, and the left blades 105aa and 105aa. 105ba swings A2 to A5, and can efficiently send wind to the area where the futon / carpet exists.

  Also, as shown in FIG. 15, for example, when the left and right wind direction plates 104 are divided into two, the respective right and left wind direction plates 104 perform control. In the embodiment of FIG. 15, the left and right wind direction plates 104 send the wind to B5 to B9 so as to send the wind evenly to the futon / carpet on the left side. The right and left wind direction plates 104 send air to B12 to B19 so as to send air uniformly to the futon / carpet on the right side. When the left and right wind direction plates 104 are not divided, the wind is sent by swinging B5 to B19 in the range where the futon / carpet is detected. In the operation mode, the dehumidifying operation is performed, the wind speed is switched to a relatively high level, and the operation of removing the humidity of the futon / carpet is performed.

  In this dehumidifying operation, priority is given to removing moisture from the futon / carpet, and when the room temperature is low, a heating operation is performed, and by applying warm air to the futon / carpet, the drying effect of the futon / carpet is promoted. It is also possible to carry out an operation that gives priority to the above. It is also effective to switch to a dehumidification operation afterwards in order to reduce the humidity that has increased due to the heating. Considering that the operation mode is slightly uncomfortable when a person is in the room, for example, when the room temperature rises, the operation mode is set to be activated when it is detected by the imaging unit 110 that there is no person. Is also good.

  Alternatively, by setting a dedicated button on the remote controller Re and operating it only when the user arbitrarily presses this button, unintended air conditioning can be prevented. If the futon / carpet cannot be detected when set using the dedicated button of the remote control Re, it is considered that the futon / carpet cannot be detected, contrary to the user's intention, and the futon is outside the range that can be detected by the imaging unit 110. -Implement wind direction control assuming that there is a carpet. For example, in the case of the present embodiment, since it is difficult to detect when it is placed immediately below the indoor unit 100, if it cannot be detected, the wind should be directed around the area directly below the indoor unit 100. .

<Details of floor material detection means>
Next, the near-infrared imaging and floor material detecting means 66 will be described in detail.

<Near infrared photography>
[Characteristics of near-infrared imaging]
It is generally known that the near-infrared absorptivity of an object depends on the molecular structure of the object. For example, when a carpet with a pattern or a flooring material with a grain is photographed in the visible light region, a plurality of pieces of color information are obtained due to the influence of the dye and the pigment even if the same material is used. In the case of shooting with, the near-infrared absorptance depends on the molecular structure of the subject, so that the same material which is hardly affected by dyes and pigments can obtain image information of similar tone.

[Irradiation wavelength range in near-infrared imaging]
If the wavelength is 750 nm or more in the infrared wavelength region, it is difficult to capture the near-infrared rays irradiated with the naked eye, and the room occupants do not feel uncomfortable. It is also known that, unlike visible light, when near-infrared light hits an object, the absorptivity of the near-infrared light to the object depends on the molecular structure of the object. In the near-infrared light image, different color tone information is obtained in the image information acquired by the imaging unit 110 for each material, so that the material is easily distinguished on the image.

  Generally, it is conceivable to use a wavelength in the far-infrared region (3000 nm or more) used in thermo cameras and the like, but far-infrared light is emitted by all objects serving as light sources, and the amount of far-infrared light generated is It is mainly affected by the temperature of the object. For this reason, it becomes extremely difficult to separate information that is caused by irradiation light from the projector and image information that is caused by the temperature of the target object, and is not suitable as an imaging wavelength region. The wavelength band of 1000 nm or less is a wavelength band close to visible light, and many general-purpose image sensors have light receiving sensitivity. For this reason, in the present embodiment, it is desirable to have a configuration capable of irradiating a wavelength of 750 nm to 1000 nm of infrared rays irradiated by the light projector.

<Explanation of data acquired by imaging means by irradiation with near infrared rays>
[Acquired image based on surface shape and material of detection object]
In general, after the near-infrared light emitted from the near-infrared light projector 115 hits the object, the near-infrared light is reflected such as specular reflection / diffuse reflection, the one absorbed and converted into heat and chemical energy, and the other Can be broadly divided into those that transmit light as it is.

At this time, the near-infrared light emitted from the near-infrared light projector 115 hits the object, and the amount of reflected light is acquired by the imaging unit 110, so that the material of the object can be determined from the captured image. At this time, there are two types of reflected light obtained by the imaging means depending on the angle of the object.
(1) When the light hitting the object is specularly reflected and the light enters the imaging means,
(2) A case where light hitting the object is diffusely reflected and the light enters the imaging means. The light amounts of the specular reflection light and the diffuse reflection light have characteristics that are contradictory depending on the material and surface shape of the object.

[Reflected light intensity by surface shape]
Generally, the reflected light returns to the imaging unit 110 and is acquired as image information acquired by the imaging unit 110. The amount of light received by the imaging unit 110 depends on the distance from the near-infrared light projector 115 to the object, and the diffusion and absorption rates of the material of the object.

  Regarding the diffusivity, when the angle of the object is perpendicular to the irradiation light or the like and the specular reflected light directly enters the imaging means, the larger the diffusion rate, the smaller the amount of light received by the imaging means 110, and the lower the diffusion rate. The smaller the size, the larger the amount of light received by the imaging means 110.

  When the angle of the object is perpendicular to the irradiation light and the specular reflection light does not directly enter the imaging unit, the diffused light returns to the imaging unit 110 and is acquired as image information acquired by the imaging unit 110. You.

  16A and 16B show the relationship between the surface shape of the detection target and the amount of reflected light received by the imaging means. FIG. 16A is a diagram showing a case where the surface roughness of the target is large, and FIG. FIG. 4 is a diagram showing a case where the surface roughness of the object is small. As shown in FIG. 16, in the case of the arrangement in which the light reflected specularly does not directly enter the imaging unit 110, the light receiving amount of the imaging unit 110 increases as the diffusion rate of the object increases. Diffusivity is large for objects with complex surface shapes, rough textures, and rough irregularities, and smaller for surfaces with a flat surface such as mirror-finished surfaces. Become. Since the characteristic is reversed between the specular reflection light and the diffuse reflection light, it is necessary to determine the angle between the near-infrared light projector 115 and the object in the imaging means 110.

[Reflected light intensity by material]
FIG. 17 is a diagram illustrating an example of the wavelength absorption rate of the material of the detection target. FIGS. 18A and 18B show the relationship between the absorptance of the detection target and the amount of reflected light received by the imaging unit. FIG. 18A is a diagram showing a case where the absorptance of the target is low, and FIG. It is a figure which shows the case where the absorptance of is high.

  The near-infrared absorptivity is specific to the material. An example of a material having an absorption spectrum shown in FIG. 17 will be described. For example, when there is a material A having an absorption spectrum rising to the right as shown in FIG. 17 and a material B having an absorption spectrum having a mountain-like shape, when the irradiation wavelength A is applied under the same surface shape, The material B having a high absorption in the wavelength band has a small amount of diffused light returning to the imaging unit 110 (see FIG. 18B), and the material A having a low absorption in the irradiation wavelength band has a diffused light returning to the imaging unit 110. (See FIG. 18A), and the luminance value of the image information is larger in the material A than in the material B. Therefore, if the distance, angle, and surface shape of the object are known in advance, if the material has a difference in absorptance, the material can be determined by acquiring the amount of reflected light as a luminance value by the imaging unit. is there.

  When the irradiation wavelength B is applied, the luminance value of the image information is larger in the material B than in the material A, and the image information having the opposite tendency is obtained. Therefore, it is desirable to irradiate a wavelength region having a difference in absorptance according to the type of material to be determined. In addition, as a configuration in which two or more types of plural wavelengths can be irradiated from the near-infrared light projector 115, it is also possible to improve the detection accuracy of the material by acquiring image information in a plurality of wavelength regions.

[Effect of reflection intensity depending on distance of measured object]
In the light emitted from the near-infrared light projector 115, the amount of light reaching the light is attenuated in inverse proportion to the square of the distance to the object. Therefore, the distance of the detection target must be known. However, if the target object to be detected is a flat object and the position and angle relationship with the indoor unit 100 are clear, it can be estimated from the image information of the imaging unit 110. For example, if the object of material detection is a floor surface and it is known that the installation height and the installation angle of the air conditioner are almost constant in a general home, the distance and angle of the floor surface are determined by the image of the imaging means. From the information, it can be estimated.

<Process of floor material detection means (material detection unit)>
The floor material detecting means 66 (material detecting unit) performs (1) external light noise removal processing by the difference processing, (2) correction processing by the distance of the determination threshold, and (3) human body / furniture exclusion processing by the difference processing. In the embodiment, as an example, a method of determining when the detection target is a floor material and the types are carpet, flooring, and tatami mats will be described. Further, when the detection target is a floor material, although there are some individual differences, the surface shape is substantially determined for each floor material. Therefore, the material determination is performed by combining the influence of the diffusion rate and the absorption rate and defining a threshold value with the luminance information captured by the imaging unit 110. The determination threshold will be described later.

[(1) External light noise removal processing by difference processing]
19A and 19B are diagrams illustrating a method of removing an influence of an external light source by the difference processing, and FIG. 19A illustrates a near-infrared image captured by an imaging unit in an environment where materials A and B are placed on a floor. (B) is a diagram showing the transition of the x-coordinate of the luminance value before and after irradiation in the material detection area, and (c) is the x-coordinate when the difference is calculated from the luminance values before and after irradiation. It is a figure showing transition.

  As shown in FIG. 19 (a), in a case where light enters an air-conditioned room from an external light source such as daytime in an indoor environment where an air conditioner is used, the influence of near-infrared rays having various wavelengths included in the external light. Is added to the image information.

  As described above, since the absorptance of near-infrared light of an object differs depending on the wavelength, if there is a plurality of wavelengths emitted from another light source (external light source 91) such as sunlight or indoor lighting, the material detection is erroneous. It becomes a detection factor. Therefore, in order to perform material detection, it is desirable to acquire image information from the near-infrared light projector 115 using only irradiation light. Therefore, this problem is solved by performing a difference process of measuring a change amount of an image before irradiation with near infrared light and an image after irradiation with near infrared light by the near infrared light projector 115.

  FIG. 19A is an explanatory diagram of a near-infrared image captured by the image capturing unit 110. The near-infrared image includes an indoor floor 333, a wall 334 in front of the indoor unit 100, a right wall 335 as viewed from the indoor unit 100, and a left wall 336 as viewed from the indoor unit 100. A material detection area 92 is an area detected by the floor material detection means 66 (material detection unit).

  Here, the difference processing is processing for calculating a difference between image information for each pixel coordinate of two images. In the difference processing according to the present embodiment, as shown in FIGS. 19B and 19C, the brightness value of the image at the time of non-irradiation of near-infrared light and at the time of irradiation of near-infrared light is acquired and used by the imaging unit 110. However, this is merely an example, and since it is only necessary to be able to detect the influence of the absorptance and reflectance for near-infrared rays by difference processing, for example, difference processing of images taken when irradiating near-infrared rays of different wavelengths is performed. However, the same effect can be obtained. Further, in the image information, the color tone information is converted into gray scale to be luminance information. By performing the difference processing, it is possible to remove the influence of the incident light from the external light source and acquire information on only the amount of change in luminance due to irradiation from the near-infrared light projector 115.

[(2) Correction processing based on distance of determination threshold]
In the determination of the material by the flooring detecting means 66, if the material to be determined can be assumed, a threshold value is set in advance, and the brightness is compared with the luminance value of the detection target on the set image, whereby the material of the target is determined. Can be detected. As an example, a case where three types of floor materials (floor materials) of a tatami mat, an acrylic carpet, and wood flooring are determined will be described.

For each material, there is a tendency expressed by equation (1) as luminance difference information obtained by irradiating near-infrared light having a wavelength of 850 nm and acquiring by the imaging means.
Tatami> Carpet (acrylic)> Wood for flooring (1)
Note that, as described above, the luminance difference value acquired by the near-infrared ray changes according to the distance of the target. Therefore, it is desirable that the determination threshold is not set as a constant value but is a function of the distance.

(Function of judgment threshold by distance)
Therefore, since the distance from the near-infrared light projector 115 to the detection target changes when performing floor material detection, the effect of the distance is reduced by making the threshold a function of the distance according to the distance, and the material is detected more accurately. Can be performed. When near-infrared rays are evenly radiated in the air-conditioned room, the illuminance of the detection target decreases in inverse proportion to the square of the distance from the irradiator, so that the luminance value acquired by the imaging unit 110 decreases. The determination threshold is changed accordingly. In addition, since the distance is estimated from the angle of view of the camera, the determination threshold expression is shown in Expressions (2) and (3), which will be described later, using pixel coordinate conversion as an example.

(Determining floor material)
FIG. 20 is a diagram illustrating correction of the determination threshold value of the floor surface material based on the image coordinates. As described above, the determination when determining the material of the flooring will be described. FIG. 20 shows the determination threshold values of tatami mats, carpets, and wood for flooring with respect to the pixel coordinates on the screen of the imaging unit 110. Here, the luminance information for each pixel of the near-infrared image after the difference processing acquired by the imaging unit 110 is compared with the determination threshold value of each material, and a pixel within the determination threshold value is determined as the floor surface that is the material. In addition, it is possible to classify the area of the floor material on the image. Here, in the present embodiment, it is possible to determine the material by using a determination threshold expression of the following material expression (2).

[Tolerance ε (θy)] ≧ | [Judgment criterion Ti (θy)] − [Screen luminance P (θx, θy)] |
... (2)

  Whether the difference between the screen brightness P (θx, θy) acquired by the imaging means 110 and the determination reference formula Ti (θy) for determining the type of material is within the tolerance ε (θy) The judgment is made with. Further, since the determination criterion equation is inversely proportional to the square of the distance, it is shown in equation (3).

here,
Ai, Bi: constant for each material (arbitrarily set for each material to be determined)
θx, θy: pixel coordinates on the image L (θy): distance conversion formula for pixel coordinates in the θy direction

  However, the determination threshold expression of Expression (1) is a determination expression when the indoor unit 100 is installed at a height of 2 m and the near-infrared light projector 115 (irradiator) irradiates uniformly, and the sensitivity of the image sensor is The determination threshold expression may be arbitrarily set in accordance with the installation height / angle of the indoor unit 100, the irradiation range of the irradiator, the irradiation wavelength, and the irradiation intensity.

[(3) Human body / furniture removal processing]
In an actual indoor environment, for example, when a floor material is detected, when a human body, furniture, or the like is reflected, these may become disturbances and material detection may not be performed correctly. When the human body detecting means 63 is provided as in the air conditioner S according to the present embodiment, when the floor material is detected, the human body detected by the human body detecting means 63 or the object detected by the object detecting means (for example, furniture) ) Is excluded and the detection is performed, whereby the material of the target object can be detected more accurately.

  FIGS. 21A and 21B are diagrams illustrating transition of a luminance difference value when an object is present in a room, FIG. 21A is a diagram illustrating an image captured when an object is present at the center of the room, and FIG. FIG. 7 is a diagram showing transition of a luminance value on a detection area. When an object is placed as shown in FIG. 21 (a), a transition as shown in FIG. 21 (b) appears in the transition of the luminance value depending on the shape of the object. For objects that exist in the horizontal direction, such as the floor surface, the brightness decreases to the right, but for furniture, wall surfaces, and the like that are in the vertical direction, the brightness increases to the left or changes horizontally. It is not considered that the surface that rises to the left or transitions horizontally is the floor surface, and it may be a specification that can be excluded.

  As described above, the air conditioner S according to the present embodiment performs human body detection, human body position detection, and floor material detection, and performs air conditioning operation control.

  The carpet feels high in the perceived temperature because of its rough surface shape, high ventilation resistance, and low thermal conductivity. In addition, the carpet has high heat retention. Therefore, the swing width of the wind direction plate is increased, and the control is changed to a method of uniformly heating the carpet area. In addition, the carpet has a large ventilation resistance and it is difficult for the wind to reach when it is blown along the floor, so by setting the wind direction plate slightly higher than the original position, it is easier for the wind to reach the feet of people, By changing the wind direction, it is possible to reliably deliver warm air to a person at a position distant from the indoor unit 100, and to provide more comfortable air conditioning by providing air conditioning that matches the floor material. It is.

  Since the flooring has a higher thermal conductivity than a floor material such as a carpet, the flooring has low heat retention and a low perceived temperature. In this case, even if the floor is warmed, the floor is immediately cooled. Therefore, the air flow is locally blown around the feet, and the wind direction control is prioritized to directly warm the feet of the person. In addition, since the perceived temperature is low, the temperature of the discharge port is changed to slightly higher than the setting, and the rotational speed of the indoor recirculation fan (blowing fan 103) is increased as necessary, thereby increasing the comfort on the easily-cooled flooring. Can be realized.

  The air conditioner S of the present embodiment detects the floor material (floor material) in the air-conditioned room by using the sensitivity in the near-infrared region of the imaging unit 110 for imaging in the visible light band. It is possible to realize highly comfortable air-conditioning operation according to the floor material. Specifically, the floor material can be determined by using the near-infrared light projector 115 (near-infrared irradiation unit) and the imaging unit 110 provided in the indoor unit 100. Also, by discriminating the floor material, the wind direction plates (left and right wind direction plates 104 and vertical wind direction plates 105) of the air conditioner S can be changed according to the magnitude of the ventilation resistance of the floor surface. By controlling the temperature of the outlet at the time of heating, it is possible to improve the comfort that the occupants feel.

  The air conditioner S of the present embodiment includes a near-infrared irradiating unit that can irradiate near-infrared light having a wavelength at which a unique absorption spectrum appears depending on a material, and an imaging unit 110 (light receiving unit) having a constant sensitivity to near-infrared light at the wavelength. And floor material detecting means 66 (material detecting unit) for estimating and detecting the material of the floor surface from the screen luminance on the image information captured when the near-infrared ray is irradiated. The air conditioning operation can be changed according to the material.

60 control unit 62 floor surface temperature detecting means for each area 63 human body detecting means (human body detecting unit)
64 Floor plan detecting means 65 Area dividing means 66 Floor material detecting means (material detecting part)
67 Floor material discriminating means for each area 68 Floor material temperature determining means at the position of a person 69 Air conditioning control means 70 Storage means 100 Indoor unit 101 Housing base 102 Heat exchanger 102a Heat transfer tube 103 Blower fan 104 Left and right wind direction plate 105 Up and down wind direction plate 106 Front Panel 107 Air Inlet 108 Filter 109a Air Outlet 109b Air Outlet 110 Imaging Unit (Light Receiver)
115 Near-infrared light projector 117 Visible light cut filter 116 Filter drive unit 120 Temperature detection means 131 Floor plan input means 132 Floor material setting means 200 Outdoor unit S Air conditioner Re, ReA Remote control (air conditioning control terminal, input unit)

Claims (7)

A material detecting unit for detecting a material of a floor surface in the room,
A control unit that controls the air conditioning operation based on the material detected by the material detection unit,
The control unit, during heating, if the detected material is the first material, compared to the second material is a hair having more irregularities on the surface than the first material, An air conditioner characterized by increasing the amount of air sent to a floor made of a first material. A material detecting unit for detecting a material of a floor surface in the room,
A control unit that controls the air conditioning operation based on the material detected by the material detection unit,
The control unit, during heating, if the detected material is the first material, compared to the second material is a hair having more irregularities on the surface than the first material, An air conditioner characterized by increasing a target temperature set on a floor made of a first material. An input unit for inputting the material of the indoor floor,
A control unit that controls the air conditioning operation based on the material input at the input unit,
The control unit, at the time of heating, when the input material is the first material, compared with the second material which is a hair having more irregularities on the surface than the first material, An air conditioner characterized by increasing the amount of air sent to a floor made of a first material. An input unit for inputting the material of the indoor floor,
A control unit that controls the air conditioning operation based on the material input at the input unit,
The control unit, at the time of heating, when the input material is the first material, compared with the second material which is a hair having more irregularities on the surface than the first material, An air conditioner characterized by increasing a target temperature set on a floor made of a first material. The air conditioner further includes a human body detection unit that detects a human body,
The air conditioner according to any one of claims 1 to 4, wherein the control unit blows air to a floor on which a human body detected by the human body detection unit exists. The first material is a flooring,
The air conditioner according to any one of claims 1 to 4, wherein the second material is a carpet. The air conditioner,
A near-infrared projector that emits near-infrared light into the room,
A light-receiving unit that has at least reception sensitivity to a wavelength of near-infrared light emitted from the near-infrared light projector and performs output according to the intensity of light received from the room,
The material detection unit, according to the output of the acquired light receiving unit when the near infrared ray from the near infrared ray projector is illuminated, according to claim 1 or claim, characterized in that to detect the material of the floor 3. The air conditioner according to 2 .