JP6046579B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner including an imaging unit and a temperature detection unit.

  There is known an air conditioner that detects a person in a room where an indoor unit is installed and reflects the detection result in air conditioning control. For example, Patent Literature 1 describes an air conditioner that acquires thermal image data in an air-conditioned room using an infrared sensor and detects a subject based on the thermal image data. In the air conditioner, the wind direction is controlled so as to blow air toward the detected subject.

JP 2010-276324 A

  In the technique described in Patent Document 1, since the occupant (subject) is detected using the infrared sensor, the position of the occupant may not be accurately detected.

  In an actual living space, the occupants perform various operations such as cooking in the kitchen, eating in the dining room, and watching TV in the living room. However, in the technique described in Patent Literature 1, since the occupant is detected using the latest thermal image data acquired by the infrared sensor, the occupant's action type (for example, in the kitchen) There is a problem that the operation) cannot be identified.

  Also, in daily life, for example, depending on whether or not a gas stove is used during cooking, depending on the presence or absence of a heat source during cooking, the comfortable ventilation state for the person who is cooking differs, but this point is sufficient It was not considered.

  The present invention is an invention for solving the above-described problems, and it is an object of the present invention to provide an air conditioner that considers indoor heat sources and identifies the actions of occupants and reflects them in air conditioning control. .

In order to achieve the above object, an air conditioner of the present invention includes a blower fan that sends out conditioned air, a wind direction plate that changes the wind direction of the conditioned air (for example, a left and right wind direction plate 104, a vertical wind direction plate 105), and a heat source in a room. Temperature detection means (for example, temperature detection means 125) for detecting the position and temperature, and control means, and the control means changes the direction of the wind direction plate according to the position of the heat source detected by the temperature detection means. Wind direction control means (for example, the heat source position wind direction control unit 138a in the control means 130) and second wind direction control means (for example, in the control means 130) that changes the direction of the wind direction plate according to the temperature of the heat source detected by the temperature detection means. wherein the heat source temperature air-direction control unit 138b) of the control means, when the temperature of the heat source temperature detecting means detects that the first predetermined temperature or higher, increasing the rotational speed of the blower fan, and When the temperature of the heat source detected by the temperature detecting means is lower than the second predetermined temperature higher than the first predetermined temperature, the wind direction plate is controlled so as to avoid blowing air to the heat source, or The number of rotations of the blower fan is reduced .

The control unit further includes a human body detection unit (for example, a human body detection unit 131) that detects the position of the human body based on image information input from the imaging unit that images the room, and each detected by the human body detection unit. respect of the human body position, the movement width of the horizontal direction in the real space, extracting a moving width in the depth direction, and the position of the face in the vertical direction, the information including, depending on the information to be extracted within a predetermined time If the position of the face is in the first range in the vertical direction (for example, range α1) and the width of movement in the left-right direction or the width of movement in the depth direction is in the second range (for example, range α2), It is estimated that the kitchen is standing in the kitchen, the face position is in the third range (for example, range β1) below the first range, and the lateral movement width or depth movement width Is smaller than the second range. When in the circumference (e.g., range .beta.2), the body is estimated to dining operation sitting at the dining, If not estimated in the kitchen operation or dining operation, estimates that other operations, estimated kitchen work, dining operation, or It is characterized by determining whether or not there is a heat source having a temperature equal to or higher than the first predetermined temperature in the vicinity of the human body in other operations.
Other aspects of the present invention will be described in the embodiments described later.

  According to the present invention, it is possible to provide an air conditioner that considers the heat source in the room and identifies the actions of the occupants and reflects them in the air conditioning control.

It is a front view of the indoor unit of the air conditioner which concerns on one Embodiment of this invention, an outdoor unit, and a remote control. It is a sectional side view of an indoor unit. It is explanatory drawing of the heat pump cycle with which an air conditioner is provided. It is a block diagram containing the control means of an air conditioner. It is explanatory drawing which shows the relationship between the measurement range by a temperature detection means, and a temperature matrix, (a) is the vertical viewing angle in the longitudinal cross-section of a temperature detection means, (b) is the planar viewing angle of the temperature detection means by planar view, and an imaging means (C) is a diagram showing a temperature matrix. It is explanatory drawing which shows the example of a detection of a temperature matrix. It is explanatory drawing which shows the cell range which detects temperature, (a) is the case of living operation, (b) is the case of kitchen operation, (c) is the case of dining operation. It is a flowchart which shows the flow of a life scene estimation process. It is explanatory drawing of a coordinate transformation process, (a) is explanatory drawing which shows the relationship between an optical axis and a vertical surface, (b) is the relationship between the image imaged on an image surface, and the human body which exists in real space. (C) is an explanatory view showing the relationship between the distance from the focal point of the lens to the center of the face and the angle of view. It is a flowchart which shows the flow of the action classification estimation process in a life scene estimation process. It is a measurement example by an imaging means, (a) is explanatory drawing (plan view) which shows the example of the direction of the optical axis of the lens which an imaging means has, (b) is a time chart which shows the change of the value of X coordinate. Yes, (c) is a time chart showing a change in the value of the Z coordinate, and (d) is a time chart showing a change in the value of the Y coordinate. It is another example of measurement by an imaging means, (a) is explanatory drawing (plan view) which shows the example of the direction of the optical axis of the lens which an imaging means has, (b) is the time which shows the change of the value of X coordinate. FIG. 4C is a time chart showing a change in the value of the Z coordinate, and FIG. 4D is a time chart showing a change in the value of the Y coordinate. It is a flowchart which shows the flow of a heat source determination process. It is explanatory drawing of the wind direction control which considered the heat source when the occupant who is performing kitchen operation exists, (a) is a top view of the mode which continues ventilation to a occupant, (b) It is a top view of the mode which ventilates all the people in a room in an air conditioned room. It is explanatory drawing which shows the ventilation area | region of the left-right direction in consideration of the heat source when the resident who is performing the dining operation exists, (a) is a top view, (b) is the up-down direction during heating operation It is a side view which shows this ventilation area | region, (c) is a side view which shows the ventilation area | region of the up-down direction in air_conditionaing | cooling operation. It is explanatory drawing which shows the ventilation area | region which considered the heat source when the occupant who is performing operation | movements other than a kitchen operation | movement and a dining operation exists, (a) is a top view, (b) is in an air-conditioning room. It is a top view which shows the ventilation area | region when a room person does not exist.

  A mode for carrying out the present invention (hereinafter referred to as an embodiment) will be described in detail with reference to the drawings as appropriate.

<Embodiment>
<Configuration of air conditioner>
FIG. 1 is a front view of an indoor unit, an outdoor unit, and a remote controller of an air conditioner according to the present embodiment. As shown in FIG. 1, the air conditioner S includes an indoor unit 100, an outdoor unit 200, and a remote controller Re. The indoor unit 100 and the outdoor unit 200 are connected via a refrigerant pipe (not shown), and air-conditions the room (the air-conditioned space) where the indoor unit 100 is installed by a known refrigerant cycle. The indoor unit 100 and the outdoor unit 200 transmit and receive information to and from each other via a communication cable (not shown).

  The remote controller Re is operated by the user, and transmits an infrared signal to the remote control receiver Q of the indoor unit 100 in accordance with the operation. The contents of the signal are commands such as an operation request, a change in set temperature, a timer, an operation mode change, and a stop request. The air conditioner S performs air conditioning operations such as a cooling mode, a heating mode, and a dehumidifying mode based on these signals.

  The imaging unit 120 is, for example, a CCD (Charge Coupled Device) camera, and is installed in the lower part of the center in the left-right direction of the front panel 106 (see FIG. 2). The imaging means 120 is arranged so that a wider range of the room can be seen with the same angle of view. The imaging unit 120 captures the air-conditioned room over time, and outputs the captured image as image information to the A / D converter. The A / D converter is an electronic circuit that converts image information input as an analog signal from the imaging unit 120 into a digital signal and outputs the digital signal. The A / D converter may be built in the imaging hand 120.

  The temperature detecting means 125 is a thermopile composed of, for example, 1 × 1 pixel, 4 × 4 pixel, or 1 × 8 pixel in the horizontal and vertical directions, and is installed at the lower center of the front panel 106 (see FIG. 2) in the horizontal direction. Has been. The temperature detecting means 125 may be provided at the upper end of the front panel so that a wider range of the room can be seen with the same angle of view. Further, the temperature detecting means 125 may be an infrared sensor or an infrared camera. In FIG. 1, the imaging unit 120 and the temperature detection unit 125 are illustrated so as to be arranged on the left and right, but they may be arranged as close as possible or arranged vertically.

  FIG. 2 is a side sectional view of the indoor unit. The housing base 101 accommodates internal structures such as the indoor heat exchanger 102, the blower fan 103, and the filter 108. The front panel 106 is installed so as to cover the front surface of the indoor unit 100.

  The indoor heat exchanger 102 has a plurality of heat transfer tubes 102a, and heats or cools the air taken into the indoor unit 100 by the blower fan 103 by heat exchange with the refrigerant flowing through the heat transfer tubes 102a. The heat transfer tube 102a communicates with the refrigerant pipe (not shown) and constitutes a part of a known heat pump cycle (not shown).

  The blower fan 103 rotates when the blower fan driving unit 103a (see FIG. 4) provided on one end side is driven, and blows air while taking indoor air into the indoor unit 100. The left and right wind direction plates 104 are rotated by a left and right wind direction plate driving unit 104a (see FIG. 4) with a rotation shaft (not shown) provided at the lower part as a fulcrum. The up / down wind direction plate 105 is rotated by an up / down wind direction plate driving unit 105a (see FIG. 4) with pivot shafts (not shown) provided at both ends as fulcrums. The blower fan drive unit 103a, the left and right wind direction plate drive unit 104a, and the up and down wind direction plate drive unit 105a are driven according to a command from the drive control unit 138 (see FIG. 4).

  When the blower fan 103 shown in FIG. 2 rotates, the room air is taken in through the air suction port 107 and the filter 108, and the air heat-exchanged by the indoor heat exchanger 102 is guided to the blowout air passage 109a. Further, the air guided to the blowout air passage 109a is adjusted in air direction by the left and right airflow direction plates 104 and the vertical airflow direction plate 105, and is sent to the outside from the air blowing port 109b to air-condition the room.

  Drawing 3 is an explanatory view of the heat pump cycle with which an air harmony machine is provided. The air conditioner S includes a compressor 201, a four-way valve 202, an indoor heat exchanger 102, an expansion valve 203, and an outdoor heat exchanger 204 having a fan 205, which are annularly connected by a pipe a. Has been. The solid arrows shown in FIG. 3 indicate the direction in which the refrigerant flows during the heating operation. Moreover, the broken line arrow shown in FIG. 3 has shown the direction through which a refrigerant | coolant flows at the time of air_conditionaing | cooling operation. The air conditioner S switches the direction in which the refrigerant flows according to the operation mode, and air-conditions the room by a known heat pump cycle. Note that description of the heat pump cycle is omitted.

  FIG. 4 is a configuration diagram including control means of the air conditioner. The control unit 130 controls the air conditioner S (see FIG. 5) in accordance with image information input from the imaging unit 120, temperature information input from the temperature detection unit 125, sensor signals input from various sensors (not shown), and the like. 1)). The storage unit 140 includes, for example, a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. Then, a program stored in the ROM is read out by a CPU (Central Processing Unit) and expanded in the RAM, and various processes are executed.

  The blower fan drive unit 103a is a motor that rotates the blower fan 103 (see FIG. 3) at a predetermined rotational speed in accordance with a command from the control unit 130. The left / right wind direction plate drive unit 104a is a motor that rotates the left / right wind direction plate 104 (see FIG. 2) in the left / right direction in accordance with a command from the control means 130. The vertical wind direction plate drive unit 105a is a motor that rotates the vertical direction plate 105 (see FIG. 2) in the vertical direction in accordance with a command from the control unit 130.

  In addition, as an object to be controlled by the control unit 130, an imaging unit driving unit (not shown) that rotates the imaging unit 120 in the left-right direction, a motor (not shown) that drives the compressor 201, and an operation state are displayed. There is a display lamp (not shown).

<Configuration of control means>
As shown in FIG. 4, the control unit 130 includes a life scene estimation unit 155, a temperature detection cell extraction unit 137, a temperature matrix detection unit 150 (temperature distribution creation unit), and a heat source determination unit 151. The life scene estimation unit 155 includes a human body detection unit 131, a coordinate conversion unit 132, a movement distance calculation unit 133, an activity amount calculation unit 134, a movement trajectory estimation unit 135, an action type estimation unit 136, It has.

  The living scene estimation unit 155 estimates a living scene (for example, a living scene in a kitchen, dining room, or living room) from the position of the human body, the movement range, and the amount of activity. That is, it is estimated that cooking is being performed for a standing human body that repeats horizontal movement within a predetermined range, and if there are multiple sitting human bodies at intervals within the predetermined range, Presume that there is.

  The temperature detection cell extraction unit 137 specifies a region for extracting the temperature of a predetermined region related to the life scene estimated by the life scene estimation unit 155 (see FIG. 7). Information on the temperature of the identified area and information on the living scene (including the position and action type of each human body) is output to the heat source determination unit 151.

  The temperature matrix detection unit 150 (temperature distribution generation unit) detects the surface temperature in the space where the indoor unit 100 is installed using the input from the temperature detection unit 125, and the temperature matrix 160 (FIG. 5C), FIG. 6).

  The heat source determination unit 151 adjusts the set temperature and the air supply amount according to the temperature of the heat source. The air supply amount is controlled by the wind direction and the wind speed. When there is a high-temperature heat source, for example, the air supply amount may be increased and the set temperature may be lowered. The setting information set by the heat source determination unit 151 is output to the drive control unit 138.

  The drive control unit 138 executes a wind direction / air volume control process. That is, based on the setting information of the heat source determination unit 151, the air direction / air volume control processing is executed. The drive control unit 138 includes a heat source position / wind direction control unit 138a (first wind direction control unit) that controls the wind direction according to the position of the heat source, and a heat source temperature / wind direction control unit 138b (second wind direction) that controls the wind direction according to the temperature of the heat source. Control means).

  Next, the function of each part which comprises the life scene estimation part 155 is demonstrated. The human body detection unit 131 detects the position of the human body based on the image information input from the imaging unit 120 every predetermined time, and outputs the detection result to the coordinate conversion unit 132. Incidentally, the detection result described above includes the coordinates of the detected face center of each human body (coordinates on the screen) and the size of the face (length in the vertical direction on the screen).

  The human body detection unit 131 includes a normal mode having a normal detection speed and a double speed mode having a detection time shorter than that of the normal mode. In the normal mode, detection is performed in one direction of rotation, for example, for one minute, and in the double speed mode, detection is performed in, for example, 30 seconds per rotation direction. In the normal mode, the detection time is set to 1 minute for the purpose of detecting the position of the human body, the magnitude of movement, the number of people, the life scene, and the like with high accuracy. On the other hand, in the double speed mode, the detection accuracy of the position and size of the human body, the number of people, the life scene, etc. is lowered, the time required for outputting the detection result is shortened, and the detection result is reflected in the air conditioning control. Reduce time. Although the human body detection in the normal mode is repeatedly performed without time limitation, the human body detection in the double speed mode is detection only for a certain period of time, and after a certain period of time has passed, shifts to detection in the normal mode.

  The coordinate conversion unit 132 converts the detection result by the human body detection unit 131 from a coordinate system on the screen specified by the number of pixels of the imaging screen to a coordinate system in the real space, and outputs the result to the movement distance calculation unit 133. Incidentally, the information output from the coordinate conversion unit 132 to the movement distance calculation unit 133 includes values of the X, Y, and Z coordinates (coordinates in the real space) of the human body center.

  The movement distance calculation unit 133 calculates the movement speed for all possible combinations of the position of each human body input from the coordinate conversion unit 132 and the position of the human body calculated in the past (for example, 1 sec before), Each is given an identification symbol and output to the activity amount calculation unit 134.

The activity amount calculation unit 134 calculates an activity amount corresponding to each movement distance calculated by the movement distance calculation unit 133. The “activity amount” means the metabolic rate [W / m ² ] per unit surface area of the human body and has a positive correlation with the moving speed of the human body. The activity amount calculation unit 134 associates the calculated activity amount with the above-described identification symbol, and outputs it to the movement trajectory estimation unit 135.

  The movement trajectory estimation unit 135 compares the amount of activity corresponding to the assumed combination of the position of the human body detected this time by the human body detection unit 131 and the position of the human body detected in the past, and the comparison result Based on the above, the movement trajectory of the human body is estimated. Then, the movement trajectory estimation unit 135 reflects the estimated movement trajectory in the activity amount of each human body, associates the activity amount with the current position (lastly detected position) of each human body, and determines the motion type estimation unit 136. Output to.

  Based on the movement trajectory estimated by the movement trajectory estimation unit 135, the motion type estimation unit 136 determines the horizontal movement width, the depth movement width, and the face position in the vertical direction for each human body. , Including information is extracted. Then, the motion type estimation unit 136 determines whether or not the information satisfies a predetermined condition with respect to image information acquired by the imaging unit 120 within a predetermined time, and estimates the motion type of the human body according to the determination result. . Furthermore, the motion type estimation unit 136 associates each human body position (the last detected position) with the motion type, and outputs them to the temperature detection cell extraction unit 137. Incidentally, there are “kitchen operation” for cooking in the kitchen, “dining operation” for eating in the dining, etc.

  As described above, the temperature detection cell extraction unit 137 specifies a region for extracting the temperature of a predetermined region related to the life scene estimated by the life scene estimation unit 155 (see FIG. 7). Information on the temperature of the identified area and information on the living scene (including the position and action type of each human body) is output to the heat source determination unit 151.

  The drive control unit 138 changes the parameters of the air conditioning control based on information input from the heat source determination unit 151 (position and operation type of each human body, air supply amount setting information based on the presence or absence of a heat source) and sensor signals. To do. The information corresponding to the various sensor signals described above is, for example, the indoor temperature detected by a temperature sensor (not shown) and the indoor humidity detected by a humidity sensor (not shown).

  The “air conditioning control parameters” include the rotation speed of the blower fan 103, the rotation angle of the left and right wind direction plates 104, and the rotation angle of the upper and lower wind direction plates 105. As shown in FIG. 4, the blower fan drive unit 103a, the left / right wind direction plate drive unit 104a, and the up / down wind direction plate drive unit 105a are driven in response to a command signal input from the drive control unit 138.

  5A and 5B are explanatory diagrams showing the relationship between the measurement range by the temperature detection means and the temperature matrix, where FIG. 5A is a vertical viewing angle in the longitudinal section of the temperature detection means, and FIG. The angle and the planar viewing angle of the imaging means, (c) is a diagram showing the temperature matrix. Reference is made to FIGS. 1 and 2 as appropriate.

  First, the imaging unit 120 and the temperature detection unit 125 will be described in detail. As shown in FIG. 2, the imaging unit 120 is installed in a fixed portion 111 that extends in the left-right direction below the dew tray 110. The imaging means 120 is installed such that the optical axis P (see FIG. 9A) of a lens (not shown) is directed downward by a depression angle ε (see FIG. 9A) with respect to the horizontal plane. The room in which the machine 100 is installed can be appropriately imaged.

  As shown in FIG. 5B, the viewing angle of the imaging unit 120 is, for example, 60 ° in plan view. The control unit 130 rotates (reciprocates) the imaging unit 120 in the order of left → center → right → center → left →... Every predetermined time (for example, 30 sec). That is, as shown in FIGS. 5B and 5C, the imaging unit 120 sequentially images the left area 120L → the central area 120S → the right area 120R (or the reverse order) in the air-conditioned room in accordance with the rotation. Thus, a region at a predetermined angle (for example, 150 °) is imaged in plan view. The left region 120 </ b> L means that the human body is on the left side of the air conditioner 100 when the human body faces the air conditioner 100.

  The temperature detection means 125 is installed such that the center of the visual field is directed downward by a depression angle ε1 with respect to the horizontal plane, and can appropriately detect the temperature of the room in which the indoor unit 100 is installed. The angle at which the temperature detection means 125 faces downward is substantially the same as the angle at which the imaging means 120 faces downward. When the temperature detection means 125 and the imaging means 120 have different detection ranges in the vertical direction, the upper ends are aligned. Alternatively, the lower ends may be aligned.

  The viewing angles in the horizontal direction of the temperature detection means 125 and the imaging means 120 are substantially the same angle. Alternatively, one may be larger than the other, and a substantially equivalent viewing angle may be obtained by changing the viewing angle by turning. The viewing angle of the temperature detecting means 125 is about 5 ° (see FIG. 5B) × 45 ° (see FIG. 5A) in the case of horizontal 1 pixel × vertical 8 pixel. The temperature detection means 125 is rotated 30 times in the left-right direction so that the detection ranges do not overlap with each other, thereby forming a total viewing angle of 150 ° (see FIG. 5B).

  FIG. 5C shows a temperature matrix 160 output by the temperature matrix detector 150 (see FIG. 4). The temperature matrix detector 150 arranges the outputs from the temperature detector 125 in a matrix and outputs the surface temperature of the object in the space. The surface temperature to be detected is output for each pixel of the temperature detecting means 125. That is, the temperature is detected by one output in the case of 1 × 1 pixel, a 4 × 4 matrix in the case of 4 × 4, and a 1 × 8 matrix in the case of 1 × 8. The detection range of each pixel is, for example, 150 ° horizontal by 120 ° vertical for 1 × 1, 11 ° × 11 ° per pixel for 4 × 4, and horizontal per pixel for 1 × 8. 5 ° × 4 ° in length. Further, when a wider angle of view is obtained using the same temperature detecting means 125, the surface temperature of the room is detected in a wider range by changing the direction of the temperature detecting means 125. That is, when the temperature detecting means 125 of 1 × 8 pixels is rotated in the left-right direction (see FIG. 5B), a field of view of 150 ° is obtained in the left-right direction by rotating 30 times, and the vertical 8 pixels × horizontal A temperature matrix of 30 pixels is output. Further, the detection may be performed more finely by overlapping a part of the detection range within a predetermined range and changing the direction of the temperature detection means 125 a plurality of times. In the following, each of the temperature matrix 160 divided into 30 divisions and 8 divisions is referred to as a cell.

  The imaging unit 120 and the temperature detection unit 125 can be driven independently. By independently driving the imaging unit 120 and the temperature detection unit 125, it is possible to detect each independently, and the detection result can be output in a short time and reflected in the control in a short time. Is possible.

  That is, when the imaging unit 120 and the temperature detection unit 125 are driven independently, the imaging unit 120 performs other detections (for example, detection of opening / closing of a corner of a space and a partition), and at the same time, the temperature detection unit 125. Can detect the surface temperature of the space. Compared with the case where the imaging means 120 and the temperature detection means 125 use the same drive means, the other need not wait for the end of one detection, and the respective detection results can be acquired without waiting time. Therefore, the detected result can be reflected in the control without waiting time, and the control according to the state of the space can be performed more quickly.

  Further, at least one of the imaging unit 120 and the temperature detection unit 125 may be detected for a short time or not in a direction in which the human body is not detected by the human body detection unit 131 (see FIG. 4). This makes it possible to detect at least one of the imaging means 120 and the temperature detection means 125 in all directions in a short time compared to the case where the detection in all directions is performed in the same manner. It is also possible to reflect the state of the human body in the control in a short time.

  The imaging unit 120 and the temperature detection unit 125 rotate so that the detection range of the imaging unit 120 and the detection range of the temperature detection unit 125 overlap. That is, the detection range of the imaging unit 120 is approximately 60 °, and the detection range of the temperature detection unit 125 is 5 °. In synchronization with the imaging unit 120 detecting one direction, the temperature detection unit 125 detects the temperature in the range detected by the imaging unit 120. When the imaging unit 120 and the temperature detection unit 125 are driven at a timing at which the detection range of the imaging unit 120 and the detection range of the temperature detection unit 125 do not overlap, the direction in which the human body is detected even if the human body is detected by the imaging unit 120 Since the temperature detection means 125 does not detect the temperature of the human body, the ambient temperature of the human body cannot be detected. On the other hand, the detection result of the imaging unit 120 and the detection result of the temperature detection unit 125 are synchronized by driving the imaging unit 120 and the temperature detection unit 125 at a timing when the detection range of the imaging unit 120 overlaps the detection range of the temperature detection unit 125. Will be allowed to. Then, for example, the temperature of the clothing of the human body can be detected at the timing when the human body is detected, and the situation in the space can be accurately reflected in the control.

  FIG. 6 is an explanatory diagram illustrating an example of detecting a temperature matrix. The temperature matrix 160 displays the temperature with colors. In the detection example of FIG. 6, a region 161 and a region 162 are shown as the high temperature part (displayed in red). More specifically, the area 161 is a floor heating part in the living room, and the area 162 is an oil stove in the living room.

  FIGS. 7A and 7B are explanatory diagrams showing a cell range in which temperature is detected. FIG. 7A shows a living operation, FIG. 7B shows a kitchen operation, and FIG. 7C shows a dining operation. Reference is made to FIG. 4 as appropriate. FIG. 7 shows a cell range for the temperature detection cell extraction unit 137 to detect the temperature. The cell range from which the temperature is extracted differs depending on the action type estimated by the life scene estimation unit 155.

  In the case of the living operation of FIG. 7A, the cell is extracted from the same cell portion as the cell corresponding to the head detected by the human body detection unit 131 (see FIG. 4). In the case of the kitchen operation of FIG. 7B, the cell for extracting the temperature of the lower cell of the cell corresponding to the head detected by the human body detection unit 131 (see FIG. 4) and the left and right cell portions of the lower cell. And In the case of the dining operation of FIG. 7C, the cells corresponding to the plurality of heads detected by the human body detection unit 131 (see FIG. 4) are set as diagonal vertex cells, and the diagonal vertex cells are included. It is assumed that the temperature is extracted from the rectangular portion. In the case of the dining operation of FIG. 7C, when only one head is detected, the cell may be a cell that extracts the temperature for the peripheral portion of the cell corresponding to the detected head.

<Life scene estimation processing>
FIG. 8 is a flowchart showing the flow of the life scene estimation process. Reference is made to FIG. 4 as appropriate. The life scene estimation process in FIG. 8 is executed by the life scene estimation unit 155. 8 is started when, for example, a mode for performing human body detection is selected by the user, and a predetermined command signal is input from the remote control Re to the remote control reception unit Q (see FIG. 1) of the indoor unit 100. The

  In step S <b> 101, the life scene estimation unit 155 sets the values of m and n to 1 (m = 1, n = 1) and stores them in the storage unit 140. Incidentally, m is a value that is sequentially incremented every time image information is input from the imaging unit 120 (S109). In addition, n is a value that is sequentially incremented each time the imaging unit 120 is rotated (S114).

  In step S <b> 102, the life scene estimation unit 155 receives input of image information from the imaging unit 120. The image information input from the imaging unit 120 is, for example, an A / D converted digital signal, and includes the number of pixels (vertical direction / horizontal direction) for specifying a pixel and a pixel value.

  In step S103, the life scene estimation unit 155 detects the position of the human body existing in the air-conditioned room using the image information input from the imaging unit 120. When performing human body detection, the control unit 130 extracts the head and shoulder lines of the human body using the image information. The extraction processing can be executed by edge extraction processing and pattern matching, for example.

  Furthermore, the life scene estimation unit 155 calculates the position of the face center for each detected human body, and calculates the size of the head (length in the vertical direction). And the life scene estimation part 155 matches the said calculation result with the time information at the time of a detection, and predetermined | prescribed identification information, and stores it in the memory | storage means 140 (refer FIG. 4).

  Next, in step S104, the life scene estimation unit 155 executes coordinate conversion processing. This will be described in detail with reference to FIG.

  FIG. 9 is an explanatory diagram of the coordinate conversion processing, (a) is an explanatory diagram showing the relationship between the optical axis and the vertical plane, and (b) is an image captured on the image plane and exists in real space. It is explanatory drawing which shows the relationship with a human body, (c) is explanatory drawing which shows the relationship between the distance from the focus of a lens to the face center, and a field angle.

  FIG. 9A is an explanatory diagram showing the relationship between the optical axis P and the vertical plane F. FIG. As shown in FIG. 9A, a straight line passing through a focal point 120a of a lens (not shown) included in the imaging unit 120 and perpendicular to the wall surface W on which the indoor unit 100 is installed (the indoor side is positive) is defined as the Z axis. . A distance from the back surface of the indoor unit 100 to the focal point 120a of the lens is represented by Δd. A straight line passing through the origin O located behind the focal point 120a of the lens by a distance Δd and perpendicular to the horizontal plane (the lower side of the indoor unit 100 is positive) is taken as the Y axis. A straight line passing through the origin O and perpendicular to the Y axis and the Z axis (the left side toward the indoor unit 100 is positive) is taken as the X axis.

  The imaging means 120 is installed such that the optical axis of a lens (not shown) faces downward from the horizontal plane by a depression angle ε (see FIG. 9A). Note that the upper end of the field of view of the imaging means 120 that expands in a fan shape in a side view is substantially coincident with the Z axis. A vertical plane F shown in FIG. 9A is a virtual plane that passes through the center of the human body and is perpendicular to the optical axis P that passes through the center of the human body. The distance L is a distance between the focal point 120a of the lens and the face center of the human body.

FIG. 9B is an explanatory diagram showing a relationship between an image captured on the image plane and a human body existing in the real space. The image plane R is a plane that passes through a plurality of light receiving elements (not shown) included in the imaging unit 120. The vertical field angle γ _y corresponding to the vertical length D0 [m] of the captured face is expressed by the following (Formula 1). Incidentally, the angle β _y [deg / pixel] is an average value of the angle of view (y direction) per pixel, and is a known value.

  Then, the distance L [m] from the focal point 120a of the lens (not shown) to the center of the face is as follows when the average length of the face in the vertical direction is D1 [m] (known value) ( It is expressed by Formula 2). As described above, the depression angle ε is an angle between the optical axis of the lens and the horizontal plane.

FIG. 9C is an explanatory diagram showing the relationship between the distance L from the focal point of the lens to the center of the face and the field angles δ _x and δ _y . Assuming that the angles of view in the X direction and Y direction from the center of the image plane R to the center of the face on the image are δ _x and δ _y , these are expressed by the following (Equation 3) and (Equation 4). Here, x _c and y _c are positions of the center of the human body in the image (X coordinate, Y coordinate in the image). Also, T _x [pixel] is the horizontal size of the imaging screen, and T _y [pixel] is the vertical size of the imaging screen, each of which is a known value.

  Therefore, the position of the human body center in the real space is expressed by the following (Formula 5) to (Formula 7).

  Returning to FIG. In step S105, the life scene estimation unit 155 calculates the movement distance for all possible combinations of the one or more human bodies detected this time and the one or more human bodies detected in the past.

  As described above, the imaging unit 120 images the air-conditioned room a predetermined number of times (for example, 30 times) in the left, center, or right region, and moves to the next region. The imaging unit 120 sequentially executes the imaging every predetermined time (for example, 1 sec). Therefore, the moving distance calculated every predetermined time can be regarded as the moving speed of the human body. At this time, the correspondence relationship between the human body detected this time and the human body detected in the past is not known.

  Next, in step S106, the life scene estimation unit 155 calculates an activity amount corresponding to each movement distance (that is, movement speed) calculated in step S105. Incidentally, the moving speed and the amount of activity have a positive correlation, and the correspondence between them is stored in the storage means 140 in advance.

  Next, in step S107, the living scene estimation unit 155 executes a movement trajectory estimation process (tracking) for estimating the actual movement trajectory of the occupant from among a plurality of candidate movement trajectories. That is, the life scene estimation unit 155 selects the combination that minimizes the corresponding amount of activity among the assumed combinations of the position of the human body detected this time and the position of one or more human bodies detected in the past. Estimate as an actual movement trajectory. Thereby, the actual movement trajectory of the human body can be appropriately estimated.

  Next, in step S108, the life scene estimation unit 155 determines whether m = M. Note that M is a preset value (for example, M = 30), and is the number of times the imaging unit 120 images the room in each of the left, center, and right regions.

  When m = M (step S108, Yes), the process of the control unit 130 proceeds to step S110. On the other hand, when m = M is not satisfied, that is, when m <M (step S108, No), the process of the control unit 130 proceeds to step S109. In step S109, the control means 130 increments the value of m, and returns to the process of step S102.

  Next, in step S110, the life scene estimation unit 155 performs an action type estimation process. The action type estimation process 1 will be described with reference to FIG.

  FIG. 10 is a flowchart showing the flow of the motion type estimation process in the life scene estimation process. The flowchart shown in FIG. 10 is executed for each occupant detected by the life scene estimation unit 155 (that is, for each human body linked in step S107 in FIG. 8).

  In step S1101, the life scene estimation unit 155 determines whether, for example, 70% or more of the above-described M times of imaging in which the Y coordinate value of the face center is within the range α1 exists. Incidentally, the above-described range Y1 of the Y coordinate value is, for example, 0 to 1.0 m. When Y = 0, the height of the face center is equal to the height of the focal point 120a of a lens (not shown) included in the imaging unit 120 (see FIG. 9A). When Y = 1.0 m, the face center exists 1.0 m below the focal point 120a of the lens.

  When the condition of step S1101 is satisfied, the life scene estimation unit 155 estimates that the occupant is standing.

  When the face center Y coordinate value is within the range α1 is 70% or more, that is, when the occupant is standing (step S1101, Yes), the living scene estimation unit 155 proceeds to step S1102. move on. On the other hand, if the Y coordinate value of the face center is less than 70% within the range α1, that is, if the occupant is not standing (step S1101, No), the living scene estimation unit 155 proceeds to step S1104. move on.

  In step S1102, the life scene estimation unit 155 determines whether there is 70% or more, for example, within the range α2 regarding the movement of the face center (X direction, Z direction). Incidentally, the range α2 is 2.5 m, for example, and is a threshold for determining whether or not the occupant is performing a kitchen operation such as cooking.

  Usually, when cooking or the like is performed in the kitchen, the occupant reciprocates in the X direction (left and right direction: see FIG. 9A) or the Z direction (depth direction: see FIG. 9A). That is, step S1102 is processing for determining whether or not the occupant is reciprocating within a predetermined range in the left-right direction or the depth direction.

  For example, when the occupant moves 1.5 m in the X direction and then moves 2 m in the −X direction, the condition of step S1102 is satisfied. Incidentally, whether the occupant's moving direction is the X direction or the Z direction depends on the positional relationship between the kitchen and the indoor unit 100.

  70% or more of the movement in the range α2 of the movement in the X direction of the center of the face and 70% or more of the movement in the Z direction in the movement of the Z direction. When it is reciprocating within the range (step S1102, Yes), the process of the life scene estimation unit 155 proceeds to step S1103.

  On the other hand, the movement of the face center in the X direction within the range α2 is less than 70%, or the movement of the Z direction in the range α2 is less than 70%. If the person frequently makes round trips exceeding the predetermined range (step S1102, No), the process of the life scene estimation unit 155 proceeds to step S1108.

  In step S1103, the living scene estimation unit 155 estimates that the occupant is standing in the kitchen (kitchen operation). Note that the processing in step S1103 is provisional estimation, and the final estimation of the action type is executed in step S115 in FIG.

  In step S <b> 1104, the life scene estimation unit 155 determines whether 70% or more of the M times of imaging in which the face center Y coordinate value is within the range β <b> 1 exists, for example. Incidentally, the aforementioned range Y1 of the Y coordinate value is, for example, 0.5 to 1.5 m. For example, when Y = 1.5 m, the center of the face exists 1.5 m below the focal point 120a of the lens (see FIG. 9A). In general, when eating in a dining room, the occupant is sitting on a chair (or sitting on the floor). In short, step S1104 is processing for determining whether or not the occupant is sitting.

  When the face center Y coordinate value is within the range β1 is 70% or more, that is, when the occupant is sitting (step S1104, Yes), the process of the life scene estimation unit 155 proceeds to step S1105. On the other hand, if the Y coordinate value of the face center is within the range β1 is less than 70%, that is, if the occupant is not sitting (step S1104, No), the process of the life scene estimation unit 155 proceeds to step S1108. move on.

  In step S1105, the life scene estimation unit 155 determines whether there are, for example, 70% or more of movements in the X direction and Z direction of the face center that are within the range β2. Incidentally, the range β2 is, for example, 0.5 m.

  Usually, when dining in a dining room, the amount of movement of the occupants per predetermined time (for example, 1 sec) is small or substantially zero. In short, step S1105 is, in short, whether the moving distance of the occupant for each predetermined time is small in the X direction (left and right direction: see FIG. 9A) or Z direction (depth direction: see FIG. 9A). It is the process which determines. Whether the occupant's moving direction is the X direction or the Z direction depends on the positional relationship between the kitchen and the indoor unit 100.

  70% or more of the movement in the range β2 of the movement in the X direction of the face center and 70% or more of the movement in the Z direction in the movement in the Z direction, that is, a predetermined number of people in the room When the movement distance for each time is small (step S1105, Yes), the life scene estimation unit 155 proceeds to step S1106.

  On the other hand, the movement of the face center in the X direction is less than 70% within the range β2, or the movement of the direction within the range β2 is less than 70%. Moves frequently beyond the range β2 (step S1105, No), the process of the life scene estimation unit 155 proceeds to step S1108.

  Next, in step S1106, the living scene estimation unit 155 determines whether or not the amount of activity of the occupant is equal to or less than a predetermined value. The predetermined value is set in advance and stored in the storage unit 140. Further, the activity amount has a positive correlation with the moving speed. In short, step S1106 is processing for determining whether or not the occupant is moving around.

  If the activity amount of the occupant is less than or equal to the predetermined value, that is, if the occupant is not moving around (Yes in step S1106), the process of the living scene estimation unit 155 proceeds to step S1107. On the other hand, if the activity amount of the occupant is greater than the predetermined value, that is, if the occupant frequently moves around (No in step S1106), the process of the living scene estimation unit 155 proceeds to step S1108.

  In step S1107, the living scene estimation unit 155 determines that the occupant is eating in the dining room (the dining operation). Note that the processing in step S1107 is provisional estimation, and the final estimation of the action type is executed in step S115 in FIG.

  In step S1108, the living scene estimation unit 155 determines that the occupant's action is not a kitchen action and a dining action (that is, other actions are performed).

  FIG. 11 is an example of actual measurement by the imaging unit, (a) is an explanatory diagram (plan view) showing an example of the direction of the optical axis of the lens of the imaging unit, and (b) shows the change in the value of the X coordinate. (C) is a time chart showing a change in the value of the Z coordinate, and (d) is a time chart showing a change in the value of the Y coordinate.

  FIG. 11A is a plan view illustrating an example of the direction of the optical axis of a lens included in the imaging unit. FIG. 8A shows a state in which the imaging unit 120 is imaging the left region (see the arrow). As described above, the imaging unit 120 sequentially images the left, center, and right regions.

  A time chart (change in the value of the X coordinate: see FIG. 9A) shown in FIG. 11B shows a lateral movement of the specific occupant as viewed from the imaging unit 120. In the example shown in FIG. 11B, the occupant moves in the horizontal direction in the range of X = 0 to 1.0 m, that is, the horizontal movement width is often in the range of 1.0 m.

  A time chart (change in the value of the Z coordinate: see FIG. 9A) shown in FIG. 11C shows the movement in the depth direction as viewed from the imaging unit 120 with respect to the occupant. As shown in FIG. 11 (c), it moves in the depth direction in the range of Z = 5.0 to 7.5 m, that is, the movement width in the depth direction is often in the range of 2.5 m.

  A time chart (change in the value of the Y coordinate: see FIG. 9A) shown in FIG. 11D shows a change in the height of the occupant as viewed from the imaging unit 120. As shown in FIG. 11 (d), it can be seen that the occupant is moving around a height Y = 0.7 m (about 1.3 m from the floor).

  In the example shown in FIG. 11, the height Y of the occupant is about 0.7 m (step S1101, Yes in FIG. 10), and the movement width in the X direction and the Z direction is within 2.5 m. (Step S1102, Yes), the life scene estimation unit 155 estimates that the occupant is performing a kitchen operation (step S1103).

  FIG. 12 is another example of actual measurement by the imaging unit, (a) is an explanatory diagram (plan view) showing an example of the direction of the optical axis of the lens included in the imaging unit, and (b) is an X coordinate value. It is a time chart which shows a change, (c) is a time chart which shows the change of the value of Z coordinate, (d) is a time chart which shows the change of the value of Y coordinate.

  In FIG. 11A described above, the case where the kitchen is installed so as to extend in the depth direction when viewed from the imaging unit 120 is shown. On the other hand, FIG. 12A shows a case where the kitchen is installed so as to extend in the left-right direction when viewed from the imaging unit 120.

  As shown in FIGS. 12B and 12C, the occupant moves in the left-right direction in the range of X = −0.5 to 1.5 m, and the depth direction in the range of Z = 4 to 5 m. Often moved to. Moreover, as shown in FIG.12 (d), the occupant is moving around height Y = 0.6m (about 1.4m from a floor surface). Also in the case shown in FIG. 12, as in the case described with reference to FIG. 11, the living scene estimation unit 155 determines that the resident is operating in the kitchen mode.

  Returning to FIG. In step S111, the life scene estimation unit 155 determines whether all of the left, middle, and right regions have been imaged N times. Note that the value of N (for example, N = 10) is set in advance and stored in the storage unit 140.

  When all the left, middle, and right areas are imaged N times (step S111, Yes), the process of the living scene estimation unit 155 proceeds to step S113. On the other hand, when there is an area that has not been imaged N times among the left, middle, and right areas (No in step S111), the process of the life scene estimation unit 155 proceeds to step S112.

  In step S112, the life scene estimation unit 155 rotates the imaging unit 120 by a predetermined angle to start imaging the next area, and returns to the process of step S101. For example, when imaging of the left area is completed, the life scene estimation unit 155 rotates the imaging unit 120 to the right and starts imaging of the central area.

  In step S113, the life scene estimation unit 155 determines whether n = N. If n = N (step S113, Yes), the process of the living scene estimation unit 155 proceeds to step S115. On the other hand, if n = N is not satisfied, that is, if n <N (No in step S113), the process of the living scene estimation unit 155 proceeds to step S114. In step S114, the life scene estimation unit 155 increments the value of n and returns to the process of step S101.

  In step S115, the life scene estimation unit 155 executes the action type estimation process 2. That is, in the above-described step S110 (behavior type estimation process 1), when it is estimated that the kitchen operation is continuously performed a predetermined number of times in the same region (left, center, or right region), the control unit 130 confirms the estimation. To do. Similarly, in step S110, when it is estimated that the dining operation is continuously performed a predetermined number of times in the same region, the control unit 130 finalizes the estimation. Incidentally, the predetermined number of times described above is a preset value (for example, twice) and is stored in the storage unit 140.

  In this way, the life scene estimation unit 155 associates the positions of the occupants detected every predetermined time in the air-conditioned room in time series by the movement trajectory estimation process (step S107) and associates them with the predetermined identification symbols. And sequentially stored in the storage means 140. Moreover, the life scene estimation unit 155 executes the above-described action type estimation process 1 (step S110) and action type estimation process 2 (step S115) for each detected occupant.

<Heat source determination processing>
FIG. 13 is a flowchart showing the flow of the heat source determination process. Reference is made to FIG. 4 as appropriate. The heat source determination processing S200 illustrated in FIG. 13 is executed by the heat source determination unit 151. The heat source determination unit 151 receives the operation type from the temperature detection cell extraction unit 137 and the temperature information of the cell portion that extracts the temperature shown in FIG. 7 based on the operation type.

  However, in step S201, the heat source determination unit 151 determines that the temperature matrix 160 (see FIG. 6) is within the predetermined range of the human body detected by the human body detection unit 131 (see FIG. 4) if the information on the operation type is not input. ) To determine whether there is a heat source. Moreover, it is the process which determines the presence or absence of a heat source, when there is no detection of a human body.

  Even when a human body is not detected, that is, when there are no occupants, a state in which floor heating is on, a state in which an oil stove is on, or an abnormal ignition state (for example, a fire) can be considered.

  When there is a heat source (step S201, Yes), in step S202, the heat source determination unit 151 determines whether the temperature T of the heat source is not a high temperature, a high temperature, or an abnormally high temperature. When the temperature is abnormally high (step S202, T ≧ T2> T1), the heat source determination unit 151 determines that the heat source is too hot and is configured to prevent the wind direction or reduce the wind speed with respect to the heat source. (Step S203), an abnormality report is issued (Step S204). The abnormality report includes, for example, a warning sound. T2 (second predetermined temperature) is a threshold temperature of the abnormal temperature, and T1 (first predetermined temperature) is a threshold temperature that is a high temperature. The threshold temperature may be a relative value of the ambient temperature.

  When the temperature is high (step S202, T2> T ≧ T1), at least one of setting to increase the air supply amount and setting to decrease the set temperature is set (step S205). At this time, when there are people in the room, the control settings are finely set according to the action type of the life scene estimation unit 155 (step S206).

In particular,
(1) In the case of kitchen operation: Setting to turn the wind toward the human body (winding), in addition to this, it is preferable to start a ventilation fan connected to a wired / wireless network.
(2) In the case of dining operation: It is good to set the wind direction against the human body (wind protection) or swing setting.
(3) In the case of living operation: The heating setting is stopped and the ventilation setting is made. When the room temperature does not reach the set temperature, the heating setting is a comfortable environment setting for the human body.

  In step S205, when the temperature of the heat source detected by the temperature detection means 215 is equal to or higher than the first predetermined temperature (T1), the second wind direction control means causes the wind direction to swing in a predetermined range including the heat source. Control the board.

  In cases other than the above (step S202, T1> T), the normal supply amount setting is kept (step S207). In step S201, when there is no heat source (step S201, No), the heat source determination unit 151 proceeds to step S207.

  FIG. 14 is an explanatory diagram of wind direction control in consideration of a heat source when there are occupants performing a kitchen operation, (a) is a plan view of a mode in which ventilation to the occupants is continued, (B) is a top view of the mode which ventilates to all the occupants in an air-conditioning room.

  FIG. 14A is an explanatory diagram (plan view) of a mode in which air blowing to a room occupant is continued when there is a room occupant performing a kitchen operation. In this case, there is a heat source H1 in the vicinity of the human body in the kitchen operation. If the heat source H1 is at a high temperature, it is assumed that a gas stove is used. If the heat source H1 is not at a high temperature, a cooking heater or a dishwasher is used. I can guess that. As the setting according to the life scene (step S206 in FIG. 13), the control means 130 sets the angles of the left and right wind direction plates 104 and the upper and lower wind direction plates 105 so as to continuously blow air toward the occupant performing the kitchen operation. Adjust to stop.

  As a range of the wind direction swing for the occupant who is operating the kitchen, the angle θp indicating the air blowing area may be an angle with a certain margin in the left-right direction than the area where the occupant moves. preferable. Thereby, while being able to ventilate suitably to an occupant, even if an occupant moves a little, it can continue blowing to the occupant. In addition, the wind direction time may be stopped for a certain time according to the sensible temperature of the occupant operating the kitchen, and stopped for a certain time according to the sensible temperature at both ends of the swing range.

  FIG. 14B is an explanatory diagram (plan view) of a mode in which air is sent to all occupants present in the air-conditioned room when there are occupants operating in the kitchen. In this case, the control means 130 rotates the left and right wind direction plates 104 so as to uniformly blow air to all the people in the room. For example, the control unit 130 executes the mode shown in FIG. 14A for 4 minutes, executes the mode shown in FIG. 14B for 1 minute, and alternately performs these in terms of time. Accordingly, it is possible to maintain the comfort of all the occupants in the air-conditioned room while intensively blowing air toward the occupants performing the kitchen operation.

  As the range of the wind direction swing for all the occupants existing in the air-conditioned room, it is preferable that the angle θq indicating the air blowing region is an angle with a certain margin in the left-right direction than the region where the occupants are present. . As a result, it is possible to blow air appropriately to the people in the room. Further, the wind direction time may be stopped for a certain period of time at both ends of the swing range according to the sensible temperature.

  Note that the relationship between FIGS. 4, 10, and 14 will be further described in detail. The human body detection unit 131 (human body detection means) detects the human body in the left-right direction and the depth direction in the real space. The human body whose width is within a predetermined range (for example, step S1102, Yes in FIG. 10) is detected, and the temperature of the heat source detected by the temperature detection means 125 in the vicinity of the detected human body is the first predetermined temperature. When it is above, the heat source temperature wind direction control unit 138b (second wind direction control means) stops the wind direction plate so that it is blown toward the human body, or focuses the wind direction plate toward the human body. It is good to make it swing within the predetermined range (for example, angle (theta) q which shows a ventilation area | region), blowing air.

  FIGS. 15A and 15B are explanatory views showing a ventilation area in the left-right direction in consideration of a heat source when there is a resident who performs a dining operation, FIG. 15A is a plan view, and FIG. 15B is a heating operation. It is a side view which shows the ventilation area | region of the up-down direction in (c), and is a side view which shows the ventilation area | region of the up-down direction in air_conditionaing | cooling operation.

  Fig.15 (a) is explanatory drawing (plan view) which shows the ventilation area | region of the left-right direction when the occupant who is performing the dining operation exists. In this case, there is a heat source H2 near the human body of the dining operation, and if the heat source H2 is hot, a pan is placed on the table using a gas stove or a teppanyaki heater is placed. Can be guessed.

  When there is a resident who is performing a dining operation, the control means 130 sets the left and right so that all the occupants sitting in the dining are blown as a setting that matches the living scene (step S206 in FIG. 13). The wind direction plate 104 is swung. In addition, it is preferable to make angle (theta) r which shows a ventilation area | region into the angle which gave the allowance only for the predetermined angle in the left-right direction rather than the area | region where a resident exists. Thereby, while being able to ventilate suitably to each occupant, even if an occupant moves a little, it can continue blowing to the occupant. Further, the wind direction time may be stopped for a certain period of time at both ends of the swing range according to the sensible temperature.

  FIG.15 (b) is explanatory drawing (side view) which shows the ventilation area | region of the up-down direction in heating operation. When the occupants are performing a dining operation during the heating operation, the control means 130 moves up and down with the feet of the occupants closest to the indoor unit 100 among the occupants (three in FIG. 15A) as the upper end. The vertical wind direction plate 105 is controlled so as to swing at a predetermined angle θs in the direction. Incidentally, the position of the occupant's feet is estimated based on the position of the occupant's face center. In this way, during the heating operation, by blowing air near the feet of the resident who is closest to the indoor unit 100, warm air can be blown to the feet of all persons including the resident.

  FIG.15 (c) is explanatory drawing (side view) which shows the ventilation area | region of the up-down direction in air_conditionaing | cooling operation. When the occupants are performing a dining operation during the cooling operation, the control unit 130 sets the lower end of the face center of the occupant farthest from the indoor unit 100 among the occupants (three in FIG. 15A). The vertical wind direction plate 105 is controlled so as to swing at a predetermined angle θt in the vertical direction. In the example shown in FIG. 15C, the upper end of the blowing area in the vertical direction is present on the horizontal plane.

  In this way, during the cooling operation, by blowing air slightly above the head of the occupant farthest from the indoor unit 100, it is possible to blow air without directly applying cold air to all persons including the occupant. Accordingly, the occupants can spend comfortably without feeling the cold caused by direct cold air.

  Further, when there is a resident in the dining operation, the control unit 130 may decrease the rotation speed of the blower fan 103 by a predetermined value. As a result, the occupant can eat in the dining room without being aware of the air blow from the indoor unit 100. The predetermined value is appropriately set based on a sensor signal (see FIG. 4), the number of people in the room performing a dining operation, and the like.

  Note that the relationship between FIGS. 4, 10, and 15 will be further described in detail. The human body detection unit 131 (human body detection means) detects a human body within a predetermined range in the left-right direction and depth direction in the real space ( For example, when a plurality of human bodies in step S1105 of FIG. 10 are detected and the temperature of the heat source detected by the temperature detecting means in the vicinity of the detected human body is equal to or higher than a first predetermined temperature, the heat source The temperature / air direction control unit 138b (second air direction control means) may swing the air direction plate within a predetermined range including the human body (for example, an angle θr indicating the air blowing area).

  FIG. 16: is explanatory drawing which shows the ventilation area | region which considered the heat source when the occupant who is performing operations other than a kitchen operation | movement and a dining operation exists, (a) is a top view, (b) It is a top view which shows the ventilation area | region in case an occupant does not exist in an air-conditioned room.

  Fig.16 (a) is explanatory drawing (plan view) which shows the ventilation area | region in case the occupant who is performing operations other than a kitchen operation | movement and a dining operation | movement exists. In the example shown in FIG. 16A, the occupant is present in the living room, but is not present in the kitchen or dining room. In this case, there is a heat source H3 near the human body in the living operation (other than the kitchen operation and the dining operation). If the heat source H3 is relatively high in temperature, it can be estimated that the floor heating is in operation.

  The control means 130 changes from the heating mode to the blower mode in consideration of the heating source of the heat source H3 together with the temperature of the cell corresponding to the head detected by the temperature detection cell extraction unit 137 (see FIG. 4). At least one of the up / down wind direction plate 105 and the left / right wind direction plate 104 is swung so that the air is limited to a range of human bodies (three people in FIG. 16A) detected by the human body detection unit 131. For example, as shown in FIG. 16 (a), by controlling the left and right wind direction plates 104 so that the central angle of the fan-shaped air blowing region is an angle θu in plan view, it is efficient for three people in the room. You can blow.

  As the range of the wind direction swing for all the occupants existing in the air-conditioned room, the angle θu indicating the air blowing region is preferably an angle that has a margin in the left and right direction by a predetermined angle as compared to the region where the occupant is present. . As a result, it is possible to blow air appropriately to the people in the room. Further, the wind direction time may be stopped for a certain period of time at both ends of the swing range according to the sensible temperature.

  FIG.16 (b) is explanatory drawing (plan view) which shows the ventilation area | region in case an occupant does not exist in an air-conditioned room. In this case, it can be inferred that the floor heating is in operation if there is a heat source H3 and the heat source H3 is relatively hot, even though there are no occupants. The control unit 130 changes from the heating mode to the air blowing mode in consideration of the heating source of the heat source H3. When the occupant is not detected, the control unit 130 swings at least one of the up / down wind direction plate 105 and the left / right wind direction plate 104 in full width. Thus, the air-conditioned room can be efficiently air-conditioned by sending air to the maximum range (center angle of the air blowing area: angle θv). Incidentally, when a state where no occupant is detected continues for a predetermined time or longer, the operation may be temporarily stopped and the operation may be resumed according to conditions such as the room temperature. As a result, wasteful power consumption associated with air conditioning operation can be reduced.

<Effect>
In the air conditioner S according to the present embodiment, the air supply amount based on the set temperature, the wind direction, and the wind speed can be adjusted by the temperature of the heat source in the real space.

  In the air conditioner S according to the present embodiment, a living scene is determined, and a heat source in the living scene is also taken into consideration. In the living scene, the type of movement of the occupant is estimated based on the movement width of the occupant in the left-right direction in real space, the movement width in the depth direction, and the height of the head. Here, the movement width and the height of the head can be easily calculated by the control means 130. Therefore, according to the present embodiment, it is possible to appropriately and accurately estimate the occupant's action type while reducing the processing load on the control unit 130.

  In addition, when the detected human body is performing a specific movement for cooking (moving within a range of about 2.5 m in a standing state), the control means 130 performs air conditioning control corresponding to the kitchen operation. Run. In addition, when the detected human body is performing a specific movement when eating (the human body hardly moves and the amount of activity is small), the control unit 130 performs air conditioning control corresponding to the dining operation. Thereby, the air conditioner S according to the present embodiment can perform fine air conditioning control according to the type of operation of the occupant.

  Further, in this embodiment, it is not necessary to input the kitchen position or the dining position in advance via the remote controller, and the control means 130 estimates the action type based on the change in the position of the human body in the air-conditioned room. . Therefore, it is not necessary for the user to input the position of the kitchen or the like (that is, the floor plan of the room) to the remote controller, so that the burden on the user can be reduced.

  Moreover, in this embodiment, when the occupant who is cooking in the kitchen is detected, the heat source used for cooking is taken into consideration and the occupant is focused on (or focused on the occupant). B) Hot air or cold air is blown. Thus, the air can be efficiently blown toward the occupant while the room is air-conditioned. In addition, when using a stove or the like during cooking, the control means 130 can command activation to an auxiliary machine such as a ventilation fan.

  In the air conditioner S according to the present embodiment, a thermopile (temperature detection means 125) that detects a temperature gradient (temperature distribution) in the air-conditioned room is used. When performing the cooling operation, if it is estimated by the operation type estimation unit 136 that there is a resident in the kitchen and a high temperature region is detected near the human body by the thermopile, the control unit 130 The rotation speed of 201 is increased. As a result, the cooling capacity is increased, and cool air having a relatively low temperature is sent toward the occupant who is operating the kitchen. Usually, when the ambient temperature rises due to heat treatment when cooking in the kitchen, the sensible temperature of the occupant also rises. Therefore, the comfort of the occupant can be improved by sending the cool air toward the occupant.

  Moreover, in this embodiment, when performing the heating operation, when a occupant who is eating in a dining room is detected, the control unit 130 can blow air in consideration of the heat source on the table.

  Further, the control means 130 can perform control such as reducing the wind speed when the indoor heat source is abnormally high.

≪Modification≫
As described above, the air conditioner S according to the present invention has been described in the above embodiment. However, the embodiment of the present invention is not limited thereto, and various modifications can be made. For example, air conditioning control may be performed in each mode (kitchen operation mode, dining operation mode, and living operation mode) based on position information and temperature information from the temperature detection means 125.

  More specifically, based on the temperature matrix 160 (see FIG. 5), the position of the heat source in the temperature matrix 160 is above a predetermined position, and the temperature detected by the temperature detection means 125 is a high temperature (used on a stove). When the liquefied petroleum gas (LPG) is burned at about 1700 to 1900 ° C.), it is presumed to be a flame of LPG combustion. Further, when the position of the heat source in the temperature matrix 160 is below the predetermined position, the area of the heat source is large, and the temperature of the heat source is 40 to 50 ° C., it can be estimated as a hot carpet. Furthermore, when the position of the heat source in the temperature matrix 160 is below the predetermined position, the area of the heat source is small, and the temperature of the heat source is 80 to 90 ° C., it can be estimated as a fan heater.

  Based on the estimation, the air conditioning control in each mode can be performed based on the position and temperature detected by the temperature detecting means 125. For example, in the case of LPG, the mode of kitchen operation is set (see FIG. 14A), and in the case of a fan heater or a hot carpet, the mode of living operation is set (see FIG. 16A). If a plurality of temperatures close to body temperature are detected and it can be estimated that the LPG combustion flame is in the vicinity of the detected position, the mode is set to the dining operation mode (see FIG. 15A).

  As another modification, in the embodiment shown in FIG. 10, the movement width in the left-right direction and the depth direction of the occupant is within the range α2 (step S1102, Yes: see FIG. 10), and the kitchen operation However, the present invention is not limited to this. That is, it is good also as a necessary condition applicable to kitchen operation | movement that at least one is within the range (alpha) 2 among the movement widths of the occupant in the left-right direction and the depth direction. Note that the same applies to step S1105 (see FIG. 10) relating to the dining operation.

  In the embodiment, the activity amount of the occupant is equal to or less than the predetermined value (step S1106: see FIG. 10) as a necessary condition for corresponding to the dining operation. However, the present invention is not limited to this. That is, the determination process in step S1106 in FIG. 10 may be omitted. Further, for example, it may be added to steps S1101 and S1102 of FIG. 10 that the amount of activity of the occupant is within a predetermined range as a necessary condition for corresponding to the kitchen operation.

  Also, the temperature environment around the kitchen is usually more severe (hot or cold) than the dining room. Priority is given to the ventilation to the occupants who are operating the kitchen, maintaining the comfort of the occupants while maintaining the comfort of the occupants performing the dining operation by the temperature change due to the ventilation. be able to.

  In addition, although it does not correspond to any of the above-mentioned three operation | movements (a kitchen operation | movement, a dining operation | movement, and a living operation | movement), when a resident is detected, it is preferable that the control means 130 performs air-conditioning control as follows. That is, the control means swings at least one of the left and right wind direction plates 104 and the upper and lower wind direction plates 105 so as to restrict the air to one or more detected human bodies. Thus, air conditioning can be efficiently performed while maintaining comfort by blowing air toward the occupants.

  In the above-described embodiment, the case where the left, center, and right regions are sequentially imaged by rotating the imaging unit 120 (viewing angle 60 °) and the region of 150 ° is imaged in plan view has been described. Not limited to. When the imaging unit 120 has a sufficient viewing angle, the human body detection process can be performed without rotating the imaging unit 120. The movement trajectory estimation processing method in this case can be performed by the same method as in the above embodiment.

  Moreover, although the said embodiment demonstrated the case where the imaging means 120 and the temperature detection means 125 were installed in the fixing | fixed part 111 of the indoor unit 100, it is not restricted to this. That is, the imaging unit 120 and the temperature detection unit 125 may be installed at other locations in the indoor unit 100 as long as the inside of the air-conditioned room can be imaged.

  Moreover, although the said embodiment demonstrated the case where the action classification estimation process 1 (step S110 of FIG. 8) was performed whenever the imaging means 120 rotated sequentially left, center, and right, it is not restricted to this. That is, the operation type estimation process 1 may be executed every predetermined time (for example, 5 minutes).

  Moreover, you may use the time at the time of performing the above-mentioned estimation of kitchen operation | movement and dining operation | movement (refer FIG. 8) as said estimation conditions. That is, a time zone in which morning, noon, and dinner are often taken may be stored in the storage unit 140 in advance, and a condition that the time for performing the estimation is included in the time zone may be added. Thereby, the operation type can be estimated more accurately.

  Moreover, in the said embodiment, although the kitchen operation | movement and the dining operation | movement were mentioned as an operation | movement classification of a resident, it cannot be overemphasized that it can apply also about another operation | movement.

DESCRIPTION OF SYMBOLS S Air conditioner 100 Indoor unit 103 Blower fan 103a Blower fan drive part 104 Left and right wind direction board 104a Left and right wind direction board drive part 105 Vertical wind direction board 105a Vertical wind direction board drive part 120 Imaging means 125 Temperature detection means 130 Control means 131 Human body detection part ( Human body detection means)
132 Coordinate conversion unit 133 Movement distance calculation unit 134 Activity amount calculation unit 135 Movement trajectory estimation unit (motion type estimation means)
136 Action type estimating part (Action type estimating means)
137 Temperature detection cell extraction unit 138 Drive control unit 138a Heat source position wind direction control unit (first wind direction control means)
138b Heat source temperature wind direction control unit (second wind direction control means)
140 storage means 150 temperature matrix detector (temperature distribution creation means)
151 Heat source determination unit (heat source determination means)
160 Temperature matrix (temperature distribution data)

Claims (4)

A blower fan that sends out conditioned air;
A wind direction plate that changes the direction of the conditioned air,
Temperature detecting means for detecting the position and temperature of the heat source in the room;
Control means,
The control means includes
First wind direction control means for changing the direction of the wind direction plate according to the position of the heat source detected by the temperature detection means;
Second wind direction control means for changing the direction of the wind direction plate according to the temperature of the heat source detected by the temperature detection means,
The control means includes
If the temperature of the heat source detected by the temperature detection means is equal to or higher than a first predetermined temperature, increase the rotational speed of the blower fan, or lower the set temperature,
When the temperature of the heat source detected by the temperature detection means is equal to or higher than a second predetermined temperature higher than the first predetermined temperature, the air direction plate is controlled so as to avoid blowing air to the heat source, or the blower fan Reduce the rotation speed of
The control means further includes
Based on image information input from the imaging means for imaging the room, comprising a human body detection means for detecting the position of the human body,
With respect to the position of each human body detected by the human body detecting means, information including the lateral movement width in the real space, the depth movement width, and the face position in the vertical direction is extracted for a predetermined time. Depending on the information extracted in
When the face position is in the first range in the vertical direction and the movement width in the left-right direction or the movement width in the depth direction is in the second range, it is estimated that the human body is standing in the kitchen. And
When the position of the face is in a third range below the first range, and the movement width in the left-right direction or the movement width in the depth direction is in a fourth range smaller than the second range, Estimating that the human body is sitting in the dining room,
If it is not estimated in the kitchen operation or the dining operation, it is estimated as other operations,
When it is determined that there is a heat source having a temperature equal to or higher than the first predetermined temperature in the vicinity of the human body performing the estimated kitchen operation, the control unit stops the wind direction plate so that air is blown toward the human body. or, air conditioner you and controls the wind direction plate so as to swing within a predetermined range while intensively blown toward the human body. A blower fan that sends out conditioned air;
A wind direction plate that changes the direction of the conditioned air,
Temperature detecting means for detecting the position and temperature of the heat source in the room;
Control means,
The control means includes
First wind direction control means for changing the direction of the wind direction plate according to the position of the heat source detected by the temperature detection means;
Second wind direction control means for changing the direction of the wind direction plate according to the temperature of the heat source detected by the temperature detection means,
The control means includes
If the temperature of the heat source detected by the temperature detection means is equal to or higher than a first predetermined temperature, increase the rotational speed of the blower fan, or lower the set temperature,
When the temperature of the heat source detected by the temperature detection means is equal to or higher than a second predetermined temperature higher than the first predetermined temperature, the air direction plate is controlled so as to avoid blowing air to the heat source, or the blower fan Reduce the rotation speed of
The control means further includes
Based on image information input from the imaging means for imaging the room, comprising a human body detection means for detecting the position of the human body,
With respect to the position of each human body detected by the human body detecting means, information including the lateral movement width in the real space, the depth movement width, and the face position in the vertical direction is extracted for a predetermined time. Depending on the information extracted in
When the face position is in the first range in the vertical direction and the movement width in the left-right direction or the movement width in the depth direction is in the second range, it is estimated that the human body is standing in the kitchen. And
When the position of the face is in a third range below the first range, and the movement width in the left-right direction or the movement width in the depth direction is in a fourth range smaller than the second range, Estimating that the human body is sitting in the dining room,
If it is not estimated in the kitchen operation or the dining operation, it is estimated as other operations,
When it is determined that there is a heat source having the temperature equal to or higher than the first predetermined temperature in the vicinity of the human body performing the estimated dining operation, the control unit swings within a predetermined range including the human body performing the dining operation. air conditioner you and controls the wind direction plate. A blower fan that sends out conditioned air;
A wind direction plate that changes the direction of the conditioned air,
Temperature detecting means for detecting the position and temperature of the heat source in the room;
Control means,
The control means includes
First wind direction control means for changing the direction of the wind direction plate according to the position of the heat source detected by the temperature detection means;
Second wind direction control means for changing the direction of the wind direction plate according to the temperature of the heat source detected by the temperature detection means,
The control means includes
If the temperature of the heat source detected by the temperature detection means is equal to or higher than a first predetermined temperature, increase the rotational speed of the blower fan, or lower the set temperature,
When the temperature of the heat source detected by the temperature detection means is equal to or higher than a second predetermined temperature higher than the first predetermined temperature, the air direction plate is controlled so as to avoid blowing air to the heat source, or the blower fan Reduce the rotation speed of
The control means further includes
Based on image information input from the imaging means for imaging the room, comprising a human body detection means for detecting the position of the human body,
With respect to the position of each human body detected by the human body detecting means, information including the lateral movement width in the real space, the depth movement width, and the face position in the vertical direction is extracted for a predetermined time. Depending on the information extracted in
When the face position is in the first range in the vertical direction and the movement width in the left-right direction or the movement width in the depth direction is in the second range, it is estimated that the human body is standing in the kitchen. And
When the position of the face is in a third range below the first range, and the movement width in the left-right direction or the movement width in the depth direction is in a fourth range smaller than the second range, Estimating that the human body is sitting in the dining room,
If it is not estimated in the kitchen operation or the dining operation, it is estimated as other operations,
When it is determined that there is a heat source having a temperature equal to or higher than the first predetermined temperature in the vicinity of the human body performing the other estimated operation, the control unit swings within a predetermined range including the human body performing the other operation. It controls the wind direction plate as, air conditioner you characterized in that switching to the blowing mode to stop the heating mode. When it is determined that there is a heat source having a temperature equal to or higher than the first predetermined temperature in the vicinity of the human body performing the estimated kitchen operation, the control unit activates a ventilating fan that can communicate by wire or wirelessly. The air conditioner according to claim 1 .

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