WO2010125615A1 - 空気調和機とその人体検知装置 - Google Patents
空気調和機とその人体検知装置 Download PDFInfo
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- WO2010125615A1 WO2010125615A1 PCT/JP2009/003883 JP2009003883W WO2010125615A1 WO 2010125615 A1 WO2010125615 A1 WO 2010125615A1 JP 2009003883 W JP2009003883 W JP 2009003883W WO 2010125615 A1 WO2010125615 A1 WO 2010125615A1
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- WIPO (PCT)
- Prior art keywords
- infrared
- human body
- detection
- air conditioner
- reaction rate
- Prior art date
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
- F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
- F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
- F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2120/00—Control inputs relating to users or occupants
- F24F2120/10—Occupancy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2120/00—Control inputs relating to users or occupants
- F24F2120/10—Occupancy
- F24F2120/12—Position of occupants
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Definitions
- the present invention relates to an air conditioner, and more particularly, to an air conditioner that detects the presence of a human body in an indoor space and controls the air blowing and the air blowing temperature, and a human body detection device thereof.
- Patent Document 1 in order to detect infrared rays from a human body that is an infrared source, for example, infrared detection means such as a pyroelectric sensor is provided, and a Fresnel lens as infrared collection means is provided in front of the infrared detection means. Further, an infrared shielding member is disposed in front of the Fresnel lens so as to cover the surface thereof, and the shielding member is rotated in conjunction with the louver for adjusting the wind direction. A harmony machine is disclosed.
- the shielding member rotates so as to cover the surface of the Fresnel lens, so that partial areas where infrared rays are actually detected are sequentially detected within the detection area that can be condensed by the Fresnel lens.
- control is performed to detect the presence of a human body in the room and to fix the wind direction adjusting louver in an area where the presence of the human body is estimated by infrared detection means.
- Japanese Unexamined Patent Publication No. 1-1121647 Japanese Unexamined Patent Publication No. 7-60004
- JP 62-175540 A Japanese Unexamined Patent Publication No. 5-20659
- infrared detection means for each distance from the air conditioner.
- this increases the number of infrared detecting means, and there is a problem in that the cost for that increases.
- Patent Document 1 while using a member that shields infrared rays, a plurality of partial detection areas are set by a multi-segment Fresnel lens, and the distance from the human body that is an infrared source is estimated.
- the distance between the infrared detection means and the infrared source differs greatly depending on whether the infrared source is present in front of the infrared detection means or in an oblique direction. Therefore, even with the method disclosed in Patent Document 1, it is still difficult to accurately detect the presence and position of the human body, which is an infrared source, and perform air conditioning.
- the present invention has been achieved in view of the above-described problems in the prior art, and more accurately detects the presence and position of a human body in a room to be air-conditioned, and more appropriately, an air conditioner.
- Another object of the present invention is to provide an air conditioner capable of controlling the wind direction from the air and a human body detection device therefor. Furthermore, it aims at providing the air conditioner which can control the wind speed and / or ventilation temperature of the wind from an air conditioner more appropriately, and the human body detection apparatus for it.
- an air conditioner comprising an outdoor unit and an indoor unit that harmonizes the air indoors with a refrigerant from the outdoor unit
- the indoor unit includes: Inside, at least a heat exchanger, a blower for blowing the air that has passed through the heat exchanger into the room, a wind speed control means for controlling the wind speed of the blow by the blower, and the wind of the blow by the blower Blower temperature control means for controlling the temperature, blow direction control means for controlling the wind direction of the blow by the blower, and a control unit for controlling the wind speed control means, the blow temperature control means, and the blow direction control means
- the indoor unit is further provided with an infrared detecting means disposed in front of the indoor unit for detecting infrared rays from the room, and the infrared detecting means is arranged in a horizontal direction.
- each infrared detection means includes an infrared sensor that outputs an electrical signal upon incidence of infrared rays from the room, and an infrared sensor in front of the infrared sensor.
- a condensing means for condensing infrared rays from a predetermined angle range in the room onto the incident surface of the infrared detecting means, and arranged in front of the condensing means for limiting the incident direction of the infrared rays.
- Movable incident direction limiting means and further, the incident direction limiting means constituting each infrared detection means has a shape for setting a detection area in which the indoor space is divided into a plurality of concentric circles.
- the controller estimates the position where the human body is present in the room based on the electrical signals from the plurality of infrared detection means, and the estimated Based on the location of the body, an air conditioner for controlling the blowing direction control means.
- the two infrared detection means are arranged, or the incident direction limiting means each move in the vertical direction.
- the infrared sensor which comprises the said infrared detection means is an infrared dual sensor.
- the control unit obtains a reaction rate of human body presence from an electrical signal from the plurality of infrared detection means, and based on the reaction rate, It is preferable to estimate the presence of a human body in an indoor detection area, or the air blowing direction control means includes a horizontal louver and a vertical louver, and the control unit is based on the estimated position of the human body. It is preferable to control the angle of the horizontal louver and the vertical louver.
- control unit estimates an amount of activity of the human body in the room based on electrical signals from the plurality of infrared detection units, and based on the estimated amount of activity, the wind speed control unit and the blower temperature control unit It is preferable to control at least one of the above.
- a human body detection device is installed in a space and detects the presence of a human body in the space by detecting infrared rays from the space.
- a plurality of infrared detection means arranged adjacent to each other so that their detection areas partially overlap in the horizontal direction, and each infrared detection means receives an electric signal by the incidence of infrared rays from within the space.
- An infrared sensor for outputting, a light collecting means disposed in front of the infrared sensor, for collecting infrared light from a predetermined angle range in the space on an incident surface of the infrared light detecting means, and in front of the light collecting means.
- a movable incident direction limiting means for limiting the incident direction of the infrared rays, and the incident direction limiting means constituting each of the infrared detection means is Each is provided with a shape for setting a detection area in which the space is concentrically separated into a plurality of circles, and a position where a human body exists in the space is estimated based on electrical signals from the plurality of infrared detection means.
- a human body detection device including a control unit.
- the two infrared detection means are arranged, and the incident direction limiting means is respectively moved in the vertical direction. It is preferable to set detection areas of long distance, medium distance, and short distance concentrically in the space.
- the infrared sensor constituting the infrared detection means is preferably an infrared dual sensor, and the control unit obtains the reaction rate of the human body from electrical signals from the plurality of infrared detection means, and It is preferable to estimate the presence of a human body in the detection area in the space based on the reaction rate.
- FIG. 1 shows the external appearance structure of the air conditioner which is one embodiment of this invention.
- It is a schematic flowchart figure which shows an example of the ventilation control performed in the indoor unit of an air conditioner based on the presence position of the human body estimated by the said human body detection apparatus.
- It is a detailed flowchart figure which shows the detailed content of estimation of the human body presence in the horizontal direction in the said schematic flowchart.
- FIG. 1 attached here shows an air conditioner used in a general home, that is, usually composed of an indoor unit 10 and an outdoor unit 20 connected by a refrigerant pipe (not shown here) between them. ing.
- symbol 100 has shown the infrared sensor as a human body detection apparatus provided in the housing surface of the indoor unit 10, although it demonstrates also in detail below.
- the indoor unit 10 of the air conditioner is an air conditioner including a blower, a motor, and the like provided with a heat exchanger, a filter, and a multiblade fan (not shown here) in its housing, similarly to a normal indoor unit. 2 and the following constituent elements shown in FIG. 2 are provided.
- the human body detection device 100 includes at least a pair of infrared sensors (infrared detectors) 110 that output signals when infrared rays are incident from a human body H that is an infrared source. That is, two sensors (ie, 110 L and 110 R ) are provided, and the sensor (however, only one infrared sensor 110 L will be described below) is an infrared dual sensor body.
- infrared sensors infrared detectors
- the sensor 111 a lens assembly (condensing means) 112 that is disposed in front of the sensor and collects infrared rays from a predetermined angle range onto the incident surface of the infrared dual sensor 111, and the lens assembly It is arranged in front of the body and is composed of a movable shielding plate (incident direction limiting means) 113 that limits the incident direction of infrared rays.
- Reference numeral 114 in the drawing denotes a shielding plate driving motor (incident direction limiting means driving means) for driving the above (incident direction limiting means) 113.
- the shielding plate (incident direction limiting means) 113 is formed of a material that does not transmit infrared rays, such as an opaque synthetic resin, and the shielding plate 113 is, as shown below,
- the infrared rays from the human body H that is an indoor infrared source are blocked from entering the infrared dual sensor 111 that is the sensor body from a specific direction. That is, the shielding plate 113 functions to regulate the incident direction of the infrared rays from the human body H to the infrared dual sensor 111 in front of the lens assembly 112.
- the indoor space to be air-conditioned is substantially concentric with the human body detection device 100 provided on the housing surface of the indoor unit 10 as the center. It is possible to divide into a plurality of regions (equal distance areas) and selectively allow (or shield) the infrared rays from the human body H in the areas to the infrared sensor body 111. That is, according to this, it is possible to estimate the presence of the human body H existing in a plurality of concentric regions centering on the infrared sensor.
- the shielding plate driving unit 114 is configured by, for example, a stepping motor or the like, and the shielding plate 113 moves up and down in front of the lens assembly 112 by rotating the motor (see arrows in the figure). ),
- the detection area by the infrared dual sensor 111 can be changed to, for example, a long distance, a medium distance, and a short distance, so that the position of the human body that is the infrared source, in other words, from the indoor unit 10 can be changed. It becomes possible to estimate the distance to the human body H, which is an infrared source, more accurately.
- reference numeral 150 in the figure denotes a control unit. As shown in the figure, the control unit 150 outputs, for example, a control signal (see the arrow in the figure), thereby shielding the above-described shielding plate.
- a shielding plate control unit 151 that rotationally drives the motor of the driving unit 114 is provided, whereby the shielding plate 113 is moved or stopped at an arbitrary position, thereby detecting the position of a human being an infrared source. Limit (set) the area. That is, the shielding plate 113 is moved so that the detection area is repeated in the order of long distance, medium distance, and short distance.
- control unit 150 estimates the position of the human body H, which is an infrared source, based on the outputs d L and d R from the pair of infrared sensors 110 L and 110 R of the human body detection device 100.
- an exercise amount estimation unit 153 that estimates the magnitude of movement of the human body H, which is an infrared source, based on outputs from the pair of infrared sensors.
- An electrical signal d1, d2 is output from the pair of infrared sensors 110 L, 110 R is the reaction rate (RA) calculator 155, the respective reaction rate RA L, the RA R After the conversion, it is input to the control unit 150.
- a wind direction plate that controls the direction (wind direction) of the air blown into the room from the indoor unit based on the output from the human body position estimating unit 152 and the output from the momentum estimating unit 153.
- an air temperature control unit 180 controls the wind direction by using, for example, a horizontal louver that extends in the horizontal direction and moves the wind up and down in the blowing direction, or a vertical plate.
- the angle (position) of the vertical louver that moves the wind in the left-right direction of the blowing direction is controlled, the wind speed control unit 170 controls the rotation speed of the motor that rotates the blower, and the wind temperature control unit 180 Change (adjust) the set temperature of the air blown from the indoor unit.
- An infrared dual sensor 111 (see FIG. 2 above) that detects the amount of infrared light from an infrared source including the human body generates an electrical signal d corresponding to the amount of change in the incident intensity of the infrared light and the frequency of the change in the incident intensity.
- This is a sensing element that includes a pyroelectric element and the like.
- the infrared sensor 110 including the infrared dual sensor 111 is generally infrared in a detection area (infrared detection area) A via a lens assembly 112 provided on the front surface thereof.
- FIG. 3B shows the time on the horizontal axis and the output signal d from the infrared dual sensor 111 on the vertical axis.
- the detection area A is divided into a plurality of concentric circles so that the distance from the infrared dual sensor 111 is substantially the same, thereby detecting the presence of the human body H that is an infrared source.
- FIG. 4 attached herewith shows an air conditioner according to a first embodiment (Embodiment 1) of the present invention, in particular, a human body detection device 100 provided on the housing surface of the indoor unit 10, and also from the figure.
- the infrared sensor 110 L, 110 R of the pair (2) such that the a L and a R is the detection area overlap partially shows the configuration of a detector disposed adjacent to each other Yes.
- each of the infrared sensors 110 L and 110 R includes lens assemblies 112 L and 112 R (details will be described later) that collect infrared rays together with the infrared dual sensors 111 L and 111 R , respectively. ing.
- these infrared sensors 110 L and the infrared sensor 110 R the is installed so as to partially overlap the detection area, placing as thus part of the detection area overlap each other
- an infrared source in a region (three regions divided in the horizontal direction, A L , A R and A M in FIG. 4) that is equal to or greater than the number (two) of infrared sensors.
- infrared sensors 110 L only by detectable detection area A L the infrared sensor 110 R only can be detected by a detection area A R
- both infrared sensors 110 L and 110 R can be detected by a detection area a M
- the two infrared sensors 110 L and 110 R are installed on the same plane by being installed on different planes (that is, on an isosceles triangular base). Compared with the case where it is, it becomes possible to detect infrared rays in a wider range.
- the lens assembly 112 constituting the infrared sensor is a means for condensing infrared rays on the infrared dual sensor 111.
- a plurality of Fresnel lenses are integrated into a dome shape (hollow hemisphere). It is constituted by the formed optical lens.
- the Fresnel lens can freely select the refraction angle of incident light.
- each lens is focused on the infrared dual sensor 111.
- the incident angle of infrared rays to the infrared dual sensor 111 can be limited to a predetermined range. It becomes possible to detect the human H as a source.
- the shielding plate 113 is further provided on the front surface of the lens assembly 112 so as to be movable up and down, thereby setting the detection area in a concentric circle (arc) shape, that is, The detection area is divided into a plurality of concentric circles and separated into, for example, a long distance, a medium distance, and a short distance, so that the presence of the human H as an infrared source can be detected.
- a concentric circle (arc) shape that is, The detection area is divided into a plurality of concentric circles and separated into, for example, a long distance, a medium distance, and a short distance, so that the presence of the human H as an infrared source can be detected.
- the shielding plate 113 is configured to move up and down in conjunction with the above-described vertical louvers using, for example, a link mechanism (not shown).
- a shielding plate 113 is provided on the outer surface side of the lens assembly 112, and the shielding plate 113 does not transmit infrared rays as described above. Therefore, the incidence of infrared rays from a specific direction of infrared rays to the infrared dual sensor 111 is blocked (see FIG. 6C). Furthermore, the shape of the end portion of the shielding plate 113 is formed into a curved shape including, for example, a circle or an ellipse (see FIG. 6A).
- the range of the incident infrared rays that is, the detection area in the indoor space is set to a plurality of substantially concentric areas (equal distance areas) centering on the human body detection device 100, so that a plurality of infrared sensors are centered. It is possible to estimate the presence of the human body H within the concentric region (see FIG. 6B).
- the infrared sensor 110 is installed in the indoor space.
- a long-distance area (detection area A F ) set concentrically at the center is set as a detection area, A FL , A FM , A FR separated into three parts on the left side, center, and right side, and is an infrared source
- the presence of human H can be detected (estimated).
- the detection area is divided into the above-described three long-range detection areas, In addition to A FL , A FM , and A FR , it is further expanded to three detection areas of medium distance (detection area A I ), A IL , A IM , and A IR. It is possible to detect (estimate) the presence of a certain person H (see FIGS. 6D, 6E, and 6F).
- the detection area is added to the above-described six long-range detection areas, A FL , A FM , A FR , A LM , A IM , A IR . , Extending to three detection areas A NL , A NM , A NR in the short distance (detection area A N ), and detecting (estimating) the presence of the human H as the infrared source in each of the nine detection areas in total. (See FIGS. 6 (g), (h) and (i)).
- RA reaction rate
- the reaction rate RA L from the left side of the infrared sensor 110 L predetermined threshold (e.g., 10%) as compared to (S901).
- a predetermined threshold e.g. 10%
- the reaction rate R A L is equal to or lower than a predetermined threshold (“No” in the figure)
- the left detection area of the infrared sensor 110 L that is, the left detection area A L and the center detection area A M.
- the right side of the reaction rate RA R a predetermined threshold value from the infrared sensor 110 R (e.g., compared with 10%) and (S902).
- S902 when determining that also the reaction rate RA R from the right side of the infrared sensor 110 R does not exceed the predetermined threshold value (in FIG. "No"), the chamber shall be presumed that the human body H is absent ("Human absence" in the figure: S903).
- the reaction rate RA L from the left side of the infrared sensor 110 L is 0% when the reaction rate RA R from the right side of the infrared sensor 110 R is 5 percent, given as an example.
- the result of the determination S902 if it is determined that the reaction rate RA R from the right side of the infrared sensor 110 R exceeds a predetermined threshold value ( "Yes” in the figure), the detection area divided into three in the indoor space on the right side of the area a R of the human body H is an infrared source is estimated to be present ( "human presence in a R” in Figure: S904).
- the reaction rate RA L from the left side of the infrared sensor 110 L is 0% when the reaction rate RA R from the right side of the infrared sensor 110 R is 55% as an example.
- the reaction rate RA L is a predetermined threshold value (e.g., 10%) determines whether beyond (S905).
- the reaction rate RA R from the right side of the infrared sensor 110 R when judged not to exceed the predetermined threshold value ( "No" in the figure), human H is an infrared source, only the left side of the infrared sensor 110 L to estimate to that present on the left side of the area a L is detected area ( "human presence in a L” in Figure: S906).
- the reaction rate RA L from the left side of the infrared sensor 110 L is 60%, and if the reaction rate RA R from the right side of the infrared sensor 110 R is 0%.
- the result of the determination S905 also the reaction rate RA R from the right side of the infrared sensor 110 R, again, if it is determined to be above a predetermined threshold ( "Yes" in the figure), and further, the left infrared sensor 110 the difference between the reaction rate RA R from reaction rate RA L and right infrared sensor 110 R from L to (RA L -RA R) determined, whether the difference is a predetermined value (e.g., 15%) or more Is determined (S907).
- a predetermined value e.g. 15%
- the human body H that is an infrared source is the left side that is the detection area of the left infrared sensor 110 L with the area a L, is estimated to be present in the right area a R is a detection area of the right infrared sensor 110 R ( "human presence in a L and a R 'of FIG: S909).
- the reaction rate RA L from the left side of the infrared sensor 110 L is 60%, and if the reaction rate RA R from the right side of the infrared sensor 110 R is 15%.
- the angle (position) of the longitudinal louver is controlled via the wind direction plate controller 160 (S82). ). More specifically, when it is estimated that the human body H that is an infrared heat source is “absence of human body” (S903), for example, the operation of the air conditioner is stopped. Further, in the right area A R, if is assumed that the human body H is an infrared source is present (S904) is such that the air from the indoor unit 10 reaches the right area A R of the chamber, longitudinal Set the angle (position) of the louver.
- the determination S1001 if the area A L and area A R is determined that there is no human body H ( "No" in the figure), one of the regions, i.e., the area A L or area A It is determined whether or not a human body exists in R (S1005).
- the reaction rate RA L from the left side of the infrared sensor 110 L, or right the reaction rate RA R a predetermined threshold value th from the infrared sensor 110 R (e.g., 40%) compared to (S1006).
- the reaction rate RA L or, when RA R is determined to exceed the predetermined threshold value th ( “Yes” in the figure), the amount of activity is estimated to be about “medium” (S1004) .
- the reaction rate RA L or, when RA R is determined not to exceed the predetermined threshold value th ( "No” in the figure), Activity estimates "small” site (S1007).
- the activity amount is estimated to be about “medium” (S1004).
- the threshold th is not exceeded (“Yes” in the figure)
- the amount of activity is “small” (S1007).
- the activity amount is set to "none" (S1010).
- the speed (wind speed) and temperature (wind temperature) of the wind blown into the room from the indoor unit. ) Is controlled (S84). More specifically, when the estimated amount of activity is “large”, the wind direction plate control unit 160 increases the speed of the wind sent from the indoor unit 10 and lowers the set temperature in the wind temperature control unit 180 downward. Correct it. When the estimated amount of activity is “medium”, it is conceivable that the range of the increase in wind speed and the downward correction of the set temperature is set lower than that in the case of “large”.
- an operation for estimating the presence of the human body H, which is a heating element, in the perspective direction, that is, the depth direction in the indoor space when viewed from the indoor unit 10 is performed (FIG. 8: S85). ).
- a long-distance detection area (A F ) based on the position (angle) of the shielding plate 113 arranged on the front surface of the lens assembly 112
- Presence of the human body H, which is an infrared source is estimated for an area that is divided into three areas: a medium-range detection area (A I ) and a short-range detection area (A N ).
- the shielding plate 113 is moved to the lowest position, that is, the incident infrared ray is not blocked and all infrared rays are incident on the infrared dual sensor 111 through the lens assembly 112. It has become.
- the reaction rate RA L and / or the reaction rate RA R exceeds a predetermined threshold value th ( "Yes" in the figure), in-room, the human body H is an infrared source as present, then the long-range detection area (a F), or in the same manner as described above, the reaction rate RA L and / or reaction rate RA R exceeds the predetermined threshold value th (for example, 10%) It is determined whether or not (S1102).
- the pair of infrared sensors 110 L and 110 R at this time has their shielding plate 113 moved to the uppermost position, that is, a detection area (A I ) at a medium distance.
- the infrared rays from the detection area (A N ) at a short distance are cut off, and the infrared rays from the human body H existing in the detection area (A F ) at a long distance are incident on the infrared dual sensor 111. ing.
- the determination S1102 results in long-range detection area (A F), if the reaction rate RA L and / or the reaction rate RA R exceeds a predetermined threshold value th ( "Yes" in the figure), the long-distance It is estimated that the human body H which is an infrared source exists in the detection area (A F ) (S1103).
- the reaction rate RA L and / or reaction rate RA R does not exceed the predetermined threshold value th ( "No" in the figure) in the case, there is a human body H in the long-distance detection area Further, in the detection area at a long distance and the detection area (A F + A I ) at a long distance, the reaction rate R A L and / or the reaction rate R A R is a predetermined threshold th ( For example, it is determined whether it exceeds 10% (S1104).
- the pair of infrared sensors 110 L and 110 R moves the shielding plate 113 to the intermediate position, that is, detects a short distance.
- the state where infrared rays from the area (A N ) are cut off and the infrared rays from the human body H existing in the detection area (A I + A F ) in the middle distance and the detection area (A I + A F ) in the long distance are incident on the infrared dual sensor 111 It has become.
- the medium distance and short distance detection area (A I + A N) when the reaction rate RA L and / or the reaction rate RA R exceeds a predetermined threshold value th ( "Yes” in the figure), medium-range It is estimated that the human body H that is an infrared source exists in the detection area (A I ) (S1105).
- the reaction rate RA L and / or the reaction rate RA R does not exceed the predetermined threshold value th ( "No” in the figure), however, since its presence is already estimated in the above determination S1101, the remaining It is estimated that the human body H, which is an infrared source, exists in the short-range detection area (A N ) (S1106).
- the angle (position) of the lateral louver is controlled via the wind direction plate control unit 160 based on the result of the estimation of the presence of the human body in the perspective direction (S85) described above ( S86). More specifically, in the above, when it is estimated that the human body H that is an infrared source is present in the long-distance detection area (A F ) (FIG. 11: S1103 above), the angle of the horizontal louver (Position) is set so that the air can reach far away in the room, that is, upward. On the other hand, when it is estimated that the human body H exists in the detection area (A N ) at a short distance (FIG.
- louver angle (position) in the horizontal direction is set downward so as to be performed.
- the angle (position) of the lateral louver is set to the above approximately intermediate angle. Set to (Position).
- the two infrared sensors 110 L and 110 R are installed so that their detection areas partially overlap each other, and the front surface of each infrared sensor
- the two infrared sensors 110 L and 110 R allow the room to be horizontally divided into three regions, A L and A
- the presence of the human body H, which is an infrared source is further divided into R and A M and separated in the perspective (depth) direction, for example, into a long distance A F , a medium distance A I , and a short distance A N.
- FIGS. 12 (a) to 12 (d) show a front view and a side view of an air conditioner according to a second embodiment (Embodiment 2) of the present invention, in particular, an infrared sensor 110 thereof.
- the infrared sensor 110 includes a hemispherical shielding plate (incident direction limiting means) 113 ′ having an opening 130 formed on a part of its surface. .
- a lens assembly 112 and an infrared dual sensor 111 constituting an infrared sensor are provided, and the shielding plate 113 ′ is a shielding plate driving unit that is an incident direction limiting unit driving unit.
- the rotation by the motor 114 is the same as described above.
- the opening 130 formed in a part of the surface of the shielding plate 113 ′ is an opening formed in a slit shape unlike the shielding plate 113 of the first embodiment.
- the shape is also formed in a curved shape including a circle and an ellipse as described above (see FIGS. 12A and 12B). That is, according to this, the range of infrared rays incident on the infrared dual sensor 111, that is, the detection area in the indoor space, is a substantially concentric area (equal distance area) centering on the human body detection device 100. Therefore, it is possible to estimate the presence of the human body H in a plurality of concentric regions centering on the infrared sensor (see FIGS. 12C and 12D).
- two said infrared sensor i.e., an infrared sensor 110 L and 110 R
- overlap the A L and A R is the detection area part, arranged adjacent to each other This is the same as in the first embodiment.
- the human H as an infrared source is detected through the slit-shaped opening 130 as shown in FIGS. 12 (c) and 12 (d).
- the area to be performed By limiting the area to be performed to a predetermined range (in the figure, detection areas A LI and A RI ), infrared rays from the human body H can be incident on the infrared dual sensor 111.
- a pair of (two) infrared sensors 110 are arranged adjacent to each other so that their detection areas partially overlap, thereby setting a plurality of detection areas (A L , A M, and A R ) in the horizontal direction.
- the position of the human body H which is an infrared source in the room, can be estimated more accurately than in the past.
- FIG. 13 attached shows changes in the detection area by the infrared sensor 110 according to the second embodiment described above, and the shielding plate 113 ′ having the slit-shaped opening 130 described above is driven by the incident direction limiting means.
- a shielding plate drive motor 114 as a means (see FIGS. 13A, 13D, and 13G)
- the detection area of the infrared sensor 110 is set in a room provided with an air conditioner.
- FIG. 13 shows a state in which the detection area is divided and the position of the human body H existing in the area is sequentially detected (FIGS. 13B and 13C, FIGS. 13E and 13F, and FIG. 13 (h) and (i)).
- the infrared sensor 110 also has a detection area in the room concentrically with the mounting position of the infrared sensor 110 as the center as in the above-described embodiment.
- the position of the human body H which is an infrared source, can be estimated more accurately than in the past. .
- the “estimation of the presence of a human body in the perspective direction” (S85) in FIG. 8 performs the process shown in FIG. 14 instead of the process shown in FIG. That is, first, the long-range detection area (A F) (state of the infrared sensor 110 at this time, referring to FIG 13 (a) ⁇ (c) ), the reaction rate from the left side of the infrared sensor 110 L RA L at least one of the reaction rate RA R from the right side of the infrared sensor 110 R, i.e., whether the reaction rate RA L and / or reaction rate RA R exceeds the predetermined threshold value th (for example, 10%) It is determined whether or not (S1401).
- the predetermined threshold value th for example, 10%
- reaction rate RA L and / or reaction rate RA R exceeds a predetermined threshold value th ( "Yes" in the figure)
- the human body to the distant detection area (A F) It is estimated that it exists (S1402).
- reaction rate RA L and / or reaction rate RA R is a predetermined threshold value th (for example, 10% ) Is determined (S1403).
- the human body detection area of the medium range (A I) It is estimated that it exists (S1404). If it is determined in the above determination (S1403) that the reaction rate RA from any of the infrared sensors does not exceed the predetermined threshold th (“No” in the figure), the following medium distance detection is further performed. The above operation is repeated for the area (A I ).
- the short-range detection area (A N) (the infrared sensor 110 when this state, referring to FIG 13 (g) ⁇ (i) ), and the reaction rate RA L from the left side of the infrared sensor 110 L at least one predetermined threshold value th of the reaction rate RA R from the right side of the infrared sensor 110 R (e.g., 10%) determines whether exceeded (S1405).
- a predetermined threshold value th "Yes" in the figure
- S1405 the case of “No” in this determination S1405
- the louver angle (position) in the lateral direction is controlled via the wind direction plate control unit 160 based on the result of the above-mentioned “estimation of human presence in the perspective direction” (S86). That is, according to the second embodiment, at least two infrared sensors 110 L and 110 R are installed so that their detection areas partially overlap each other, and the detection areas are concentrically arranged on the front surface of each infrared sensor. By providing a movable shielding plate 113 set in an (arc) shape, the two infrared sensors 110 L and 110 R divide the room into three regions, A L , A R and A M in the horizontal direction.
- An air conditioner capable of more appropriately controlling the wind direction from the air conditioner is provided. That is, the occupant present in the room can take a wind with a more appropriate wind direction and a more appropriate wind temperature at the position at a more appropriate wind speed.
- the shape of the shielding plate 113 is formed in, for example, a curved shape including, for example, a circle or an ellipse, in the shape of the end portion or the slit-shaped opening.
- the present invention is not limited to this, as long as it can divide the detection area into a substantially concentric circle around at least the infrared sensor 110, and in other shapes. There may be.
- the present invention is not limited to this. It is also possible to increase the number of infrared sensors (N), for example, as shown in FIG. In this case, the areas that can be detected by being divided in the horizontal (left and right) direction by the two infrared sensors 110 L and 110 R described above are detected from the above three locations (A L , A M, and A R ). Further, it can be further divided into 3 + 2N (in the case of FIG. 14, a total of five areas of A L , A L ⁇ M , A M , A R ⁇ M , and A R ). That is, according to this, it is possible to further subdivide the detection area in the room and thereby estimate the position of the human body H which is an infrared source.
- DESCRIPTION OF SYMBOLS 10 ... Indoor unit, 20 ... Outdoor unit, 100 ... Human body detection apparatus, 110 ... Infrared sensor, 111 ... Infrared dual sensor, 112 ... Lens assembly (condensing means), 113 ... Shielding plate (incident direction limiting means), 114 ... shielding plate driving motor (incident direction limiting means driving means), 150 ... control unit, 151 ... shielding plate control unit, 152 ... human body position estimation unit, 153 ... momentum estimation unit, 155 ... reaction rate (RA) calculation unit, 160, wind direction plate control unit, 170, wind speed control unit, 180, wind temperature control unit.
- RA reaction rate
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Abstract
Description
続いて、本発明になる空気調和機を設けた室内における人体の存在と位置とを検知する人体検出装置の原理について、以下に説明する。
添付の図4は、本発明の第1の実施例(実施例1)になる空気調和機、特に、その室内機10のハウジング表面に設けられた人体検出装置100を示しており、図からも明らかなように、一対(2個)の赤外線センサー110L、110Rを、その検知エリアであるALとARとが一部重なり合うよう、互いに隣接して配置した構成の検出器を示している。なお、この図の例では、各赤外線センサー110L、110Rは、それぞれ、赤外線デュアルセンサー111L、111Rと共に、赤外線を集光するレンズ集合体112L、112R(詳細は後述)を備えている。なお、上述したように、これら赤外線センサー110Lと赤外線センサー110Rは、互いにその検知エリアの一部が重なるように設置されており、このように検知エリアの一部が重なるように設置することで、赤外線センサーの設置数(2個)以上の領域(図4において、水平方向に分割した3つの領域、AL、AR及びAM)について、赤外線源を検知することを可能としている。
続いて、上記にその原理を述べた人体検出装置100により、室内における人体の存在とその位置とを検出(推定)し、もって、室内機10からの送風を制御する方法について、以下に説明する。
<水平(左右)方向での人体存在の推定>
<活動量の推定>
<遠近(深さ)方向における人体存在の推定>
添付の図12(a)~(d)は、本発明の第2の実施例(実施例2)になる空気調和器、特に、その赤外線センサー110の正面図及び側面図を示す。特に、この実施例2では、図からも明らかなように、赤外線センサー110は、その表面の一部に開口部130を形成した半球状の遮蔽板(入射方向限定手段)113’を備えている。そして、この遮蔽板113’の内側には、赤外線センサーを構成するレンズ集合体112と赤外線デュアルセンサー111とが設けられ、かつ、この遮蔽板113’が入射方向限定手段駆動手段である遮蔽板駆動モータ114により回転駆動することも、上記と同様である。
Claims (12)
- 室外機と、当該室外機からの冷媒により室内に空気を調和する室内機とからなる空気調和機であって、前記室内機は、その内部には、少なくとも、熱交換器と、当該熱交換器を通った空気を室内に送風するための送風機と、当該送風機による送風の風速を制御する風速制御手段と、当該送風機による送風の風温を制御する送風温度制御手段と、当該送風機による送風の風向を制御する送風方向制御手段と、そして、前記風速制御手段、前記送風温度制御手段、前記送風方向制御手段を制御するための制御部とを備えたものにおいて、
前記室内機は、更に、その前方に配置され、前記室内からの赤外線を検知するための赤外線検知手段を備えており、
前記赤外線検知手段は、水平方向に、複数、その検知エリアが一部重なり合うように隣接して配置されており、かつ、各赤外線検知手段は、
前記室内からの赤外線の入射により電気信号を出力する赤外線センサーと、
当該赤外線センサーの前方に配置され、前記室内の所定の角度範囲からの赤外線を該赤外線検知手段の入射面へ集光させる集光手段と、
前記集光手段の前方に配置され、前記赤外線の入射方向を制限するための、移動可能な入射方向限定手段とを備え、更に、
当該各赤外線検知手段を構成する入射方向限定手段は、それぞれ、前記室内の空間を同心円状に複数に分離した検知エリアを設定する形状を備えており、そして、
前記制御部は、前記複数の赤外線検知手段からの電気信号に基づいて前記室内において人体が存在する位置を推定すると共に、当該推定した人体の存在位置に基づいて、前記送風方向制御手段を制御することを特徴とする空気調和機。 - 前記請求項1に記載した空気調和機において、前記赤外線検知手段は、2個配置されていることを特徴とする空気調和機。
- 前記請求項1に記載した空気調和機において、前記入射方向限定手段は、それぞれ、その上下方向の移動に伴って、前記室内の空間を同心円状に遠距離、中距離、近距離の検知エリアを設定することを特徴とする空気調和機。
- 前記請求項1に記載した空気調和機において、前記赤外線検知手段を構成する赤外線センサーは、赤外線デュアルセンサーであることを特徴とする空気調和機。
- 前記請求項1に記載した空気調和機において、前記制御部は、前記複数の赤外線検知手段からの電気信号から人体存在の反応率を求め、かつ、当該反応率に基づいて前記室内の検知エリアにおける人体の存在を推定することを特徴とする空気調和機。
- 前記請求項1に記載した空気調和機において、前記送風方向制御手段は、横ルーバーと縦ルーバーとを備えており、前記制御部は、推定された人体の存在位置に基づいて当該横ルーバー及び縦ルーバーの角度を制御することを特徴とする空気調和機。
- 前記請求項1に記載した空気調和機において、前記制御部は、前記複数の赤外線検知手段からの電気信号に基づいて前記室内における人体の活動量を推定し、当該推定した活動量に基づいて、前記風速制御手段、前記送風温度制御手段の少なくとも一つを制御することを特徴とする空気調和機。
- 空間内に取り付けられ、当該空間内からの赤外線を検知することによってその内部における人体の存在を検知する人体検知装置であって、
水平方向に、その検知エリアが一部重なり合うように隣接して配置された複数の赤外線検知手段を備えており、かつ、
各赤外線検知手段は、
前記空間内からの赤外線の入射により電気信号を出力する赤外線センサーと、
当該赤外線センサーの前方に配置され、前記空間内の所定の角度範囲からの赤外線を該赤外線検知手段の入射面へ集光させる集光手段と、
前記集光手段の前方に配置され、前記赤外線の入射方向を制限するための、移動可能な入射方向限定手段とを備え、更に、
当該各赤外線検知手段を構成する入射方向限定手段は、それぞれ、前記空間を同心円状に複数に分離した検知エリアを設定する形状を備えており、そして、
前記複数の赤外線検知手段からの電気信号に基づいて前記空間内において人体が存在する位置を推定する制御部を備えていることを特徴とする人体検知装置。 - 前記請求項8に記載した人体検知装置において、前記赤外線検知手段は、2個配置されていることを特徴とする人体検知装置。
- 前記請求項8に記載した人体検知装置において、前記入射方向限定手段は、それぞれ、その上下方向の移動に伴って、前記空間を同心円状に遠距離、中距離、近距離の検知エリアを設定することを特徴とする人体検知装置。
- 前記請求項8に記載した人体検知装置において、前記赤外線検知手段を構成する赤外線センサーは、赤外線デュアルセンサーであることを特徴とする人体検知装置。
- 前記請求項8に記載した人体検知装置において、前記制御部は、前記複数の赤外線検知手段からの電気信号から人体存在の反応率を求め、かつ、当該反応率に基づいて前記空間内の検知エリアにおける人体の存在を推定することを特徴とする人体検知装置。
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CN102414519B (zh) | 2014-11-05 |
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