CN113531650B - Indoor unit of air conditioner - Google Patents
Indoor unit of air conditioner Download PDFInfo
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- CN113531650B CN113531650B CN202110790705.8A CN202110790705A CN113531650B CN 113531650 B CN113531650 B CN 113531650B CN 202110790705 A CN202110790705 A CN 202110790705A CN 113531650 B CN113531650 B CN 113531650B
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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- Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air-conditioning indoor unit, which comprises a human detection device; a human detection sensor having an initial detection boundary angle range of α; a rotation unit fixedly connected to the human detection sensor and driving the human detection sensor to rotate; a control unit which is connected with the human detection sensor and the rotation unit in a communication way; wherein the control unit is configured to calculate a rotation angle β of the rotation unit when the user is not detected, the rotation angle β being calculated by a formula β = n × Δ α, and the control unit is further configured to calculate an angle range α 'of an update detection boundary of the human detection sensor, the calculation formula being α' = α +2 β. The invention can automatically judge the installation position, reduce the rotation detection of useless dead angles, stop rotating after judging the detection angle, reduce the power consumption of the human detection device and improve the user experience.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an indoor unit of an air conditioner.
Background
The human detection technology for household appliances is mature, such as infrared human detection, image recognition (camera) human detection, radar wave human detection and the like, and the application of the human detection technology in household appliances is more and more popular. The people feel that the detection has certain detection angle scope, even if increase rotating device increase scanning range, can increase the degree of difficulty that detects the recognition algorithm, increase the consumption, the rotation of part also brings not good experience for the user.
The existing human sensing device is applied to an indoor unit of an air conditioner, and generally can be fixed at a certain position of the indoor unit, the installation position of the indoor unit of the air conditioner is not fixed, particularly, a wall-mounted air conditioner or an air duct type air conditioner is possibly arranged at the middle position of one side of a house or close to a corner, the detection range of the human sensing device is different due to different installation positions, if the human sensing device is not adjusted, the human sensing device can be shielded by a wall body in a large range, the detection performance is wasted, and the using effect is greatly reduced. The existing human detection sensor mostly adopts a rotating mechanism in order to increase the area or avoid the detection dead angle caused by installation, the power consumption of the human detection sensor is increased in the using process, the dynamic detection also makes the detection algorithm complex and difficult to realize, and the rotating device also brings negative effects to the user experience.
In summary, it is desirable to design an indoor unit of an air conditioner to solve the above-mentioned problems.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an air conditioner indoor unit, wherein when the human detection device is applied to an air conditioner, an effective detection area can be identified by recording the frequent activity range of a user, so that the performance of the human detection device can be effectively utilized, and the user experience is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
indoor set of air conditioning includes:
a human detection device fixed to the housing;
a human detection sensor having an initial detection boundary angle range of α;
a rotation unit fixedly connected to the human detection sensor and driving the human detection sensor to rotate;
a control unit, which is in communication connection with the human detection sensor and the rotation unit, and is used for receiving detection signals, calculating detection results and sending control commands;
the control unit is used for calculating a rotation angle beta of the rotation unit when a user is not detected;
the control unit is further adapted to calculate an angle range α' of an updated detection boundary of the human detection sensor.
In some embodiments of the present invention, the calculation formula of the rotation angle β is β = n × Δ α, where n is the number of rotations and Δ α is the rotation angle of each rotation.
In some embodiments of the present invention, the calculation formula of the angle range α 'of the updated detection boundary is α' = α +2 β.
In some embodiments of the present invention, the rotation angle β includes a horizontal left rotation angle β 1 and a horizontal right rotation angle β 2; the control unit is provided with a storage module for storing an initial detection position gamma and a center detection position gamma' of the human detection sensor.
In some embodiments of the present invention, the control unit is configured to calculate a deflection angle Δ γ to determine a center detection position γ' of the human detection sensor, the deflection angle Δ γ being calculated by a formula Δ γ = | β 1- β 2|/2; when β 1< β 2, the center detection position γ' is deflected rightward by Δ γ with respect to the initial detection position γ; when β 1 ≧ β 2, the center detection position γ' is deflected leftward by Δ γ from the initial detection position γ.
In some embodiments of the invention, the control unit is further configured to store a level preset value θ.
In some embodiments of the present invention, the control unit is configured to control the human detection sensor to perform human detection while stationary centering on a center detection position γ' when β 1+ β 2 ≦ θ; when β 1+ β 2> θ, the human detection sensor is controlled to detect the rotating human with the center detection position γ' as the center and (β 1+ β 2)/2 as the rotation angle.
In some embodiments of the present invention, the rotation limit of the rotating unit is ω, and the rotation angle β satisfies the relation: beta is not more than omega; the angle range α' of the updated detection boundary satisfies the relation: alpha' is less than or equal to alpha +2 omega.
In some embodiments of the present invention, the detection sensor is any one of an infrared human detection sensor, a camera image recognition sensor or a radar wave human detection sensor.
In some embodiments of the invention, the memory module is provided separately from the control unit, and is electrically connected to the control unit.
Compared with the prior art, the technical scheme of the invention has the following technical effects:
according to the invention, the rotation unit is adopted to drive the human sensing detection sensor to rotate, the installation position is automatically judged by recording the frequent movement range of the user and utilizing the detection algorithm in the control unit, so that the rotation detection without dead angles is reduced, or the rotation is stopped after the detection angle is judged, the power consumption of the human sensing detection device is reduced, and the user experience is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of the human detection device.
Fig. 2 is a first application scenario of the human detection apparatus.
Fig. 3 is a diagram of a second application scenario of the human detection apparatus.
Reference numerals: 100-human detection means; 110-human detection sensor; 120-a rotation unit; 130-a control unit; 200-machine shell.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art. In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator in the present application. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.
The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.
Referring to fig. 1, an indoor unit of an air conditioner includes:
a human body detection device 100 fixed to the housing 200;
a human detection sensor 110 whose initial detection boundary has an angle range of α;
a rotating unit 120 fixedly connected to the human detection sensor 110 and driving the human detection sensor 110 to rotate; the rotation angle limit of the rotation unit 120 is ω;
a control unit 130 communicatively connected to both the human detection sensor 110 and the rotation unit 120, for receiving a detection signal, calculating a detection result, and transmitting a control command;
the control unit 130 is configured to calculate a rotation angle β of the rotation unit when the user is not detected, where the rotation angle β is calculated by β = n × Δ α, where n is a rotation number, that is, a number of rotations until the user is not detected in the process of determining the rotation angle β; delta alpha is the rotation angle of each rotation;
the control unit 130 is further configured to calculate an angle range α 'of an update detection boundary of the human detection sensor 110, which is calculated by an equation α' = α +2 β.
In some embodiments of the present invention, the human detection sensor 110 may be an infrared human detection sensor, a camera image recognition sensor, a radar wave human detection sensor, or the like.
The rotation unit 120 can drive the human detection sensor 110 to rotate left and right along the horizontal direction or rotate up and down along the vertical direction, so as to adjust the detection viewing angle or increase the detection area. In the present invention, only the horizontal right and left rotation is involved.
The control unit 130 may be electrically connected to the human detecting sensor 110, receive a detection signal thereof, and calculate a detection result based on the detection signal, and the detection result may determine a rotation angle or a fixing position of the rotating unit 120.
In some embodiments of the present invention, a storage module is disposed in the control unit 130, and is configured to store the detection data or the detection conclusion calculated by the control unit 130. In other embodiments, the storage module may be provided separately from the control unit 130, and is electrically connected to the control unit 130 for storing the detection data or detection conclusion calculated by the control unit 130. In use, the control unit 130 may control the rotation unit 120 by retrieving the detection data or detection conclusion in the storage module, thereby determining the detection boundary of the human detection sensor 110.
In some embodiments of the present invention, the rotation angle β includes a horizontal left rotation angle β 1 and a horizontal right rotation angle β 2.
The range of each rotation angle determines the effective detection boundary of the human detection device, i.e., no user is present outside the effective detection range.
In some embodiments of the present invention, the control unit is configured to calculate a deflection angle Δ γ to determine a center detection position γ' of the human detection sensor, the deflection angle Δ γ being calculated by a formula Δ γ = | β 1- β 2|/2; when β 1< β 2, the center detection position γ' is deflected rightward by Δ γ with respect to the initial detection position γ; when β 1 ≧ β 2, the center detection position γ' is deflected leftward by Δ γ from the initial detection position γ. The initial detection position gamma is the middle position of the horizontal angle rotation angle after the initial electrification; the center detection position γ' is the middle position of the horizontal angle rotation angle after the update of the boundary. The initial detection position γ and the central detection position γ 'are stored in the storage module, and the control unit 130 may retrieve the central detection position γ' in the storage module each time the air conditioning system is turned on or powered up again.
In some embodiments of the invention, the control unit is further configured to store a level preset value θ. The purpose of increasing the horizontal preset value θ is to ignore the rotation angle when the difference between the actual detection angle and the nominal detection angle of the human detection sensor is not large, reduce the rotation unit 120, improve the reliability, and reduce the negative impact of the rotation on the user experience.
In some embodiments of the present invention, the control unit 130 is configured to control the human detection sensor 110 to perform human detection while stationary around the center detection position γ' when β 1+ β 2 ≦ θ; when β 1+ β 2> θ, the human detection sensor 110 is controlled to detect the rotating human with the center detection position γ' as the center and (β 1+ β 2)/2 as the rotation angle.
In some embodiments of the present invention, the rotation limit of the rotating unit is ω, and the rotation angle β satisfies the relation: beta is less than or equal to omega; the angle range α' of the updated detection boundary satisfies the relation: alpha' is less than or equal to alpha +2 omega.
The control process of the control unit 130 is described in detail below.
First, the fixed position detection is performed, after the air conditioning system is powered on, the control unit 130 drives the rotation unit 120 to perform the position reset, so that the human detection sensor 110 performs the human detection at the initial design center point position, because the angle range of the initial detection boundary of the human detection sensor 110 is α, that is, when the human detection sensor 110 is fixed, the detection angle in the horizontal direction is α.
When calculating the detection boundary, it is first determined whether there is a user in the angle range α of the initial detection boundary, and if there is no user in the range, the control unit 130 does not need to issue a rotation instruction to the rotation unit, that is, the current position of the human detection sensor 110 is maintained.
Next, the calculation process for updating the detection boundary is illustrated for the case where there is a user in the angle range α of the initial detection boundary
Referring to fig. 2, the human detection device 100 is installed at a position near a corner of a room.
The calculation process for updating the detection boundary specifically includes the following steps:
s1, the horizontal detection angle of the human detection sensor 110 is α (a solid line included angle, α =80 °), the rotation angle limit of the rotation unit is ω (a solid line included angle with a dotted line on the same side, ω =30 °), and the actual detection angle range is α +2 ω (a dotted line included angle, at this time, α +2 ω =140 °).
S2, after the initial electrification, the human detection sensor 110 is fixed at the initial detection position gamma for human detection, and then the human detection sensor is used for detecting the human
1) If the human detection sensor 110 does not detect a user within the left boundary thereof, the horizontal left rotation angle β 1=0 × Δ α =0 is recorded. The human detection sensor 110 detects the user within the range of the right boundary thereof, and records the horizontal rightward rotation angle β 2=1 × Δ α =10 ° (Δ α =10 °).
2) After the human detection sensor 110 returns to the initial detection position γ, detection is performed with a rotation angle increased by Δ α to the right (i.e., the updated detection boundary range is α' = α + Δ α =80+10=90 °) as a detection boundary, and no user is detected in the boundary range on the left side thereof, and if the human detection sensor 110 detects a user in the boundary range on the right side thereof, a horizontal right rotation angle β 2= Δ α =20 ° is recorded.
3) After the human detection sensor 110 returns to the initial detection position γ, detection is performed with the rotation angle increased rightward by 2 × Δ α (i.e., the update detection boundary range is α' = α +2 Δ α =80+20=100 °) as the detection boundary, and if no user is detected in the left boundary range thereof and if the human detection sensor 110 detects a user in the right boundary range thereof, the horizontal rightward rotation angle β 2=3 × Δ α =30 ° is recorded.
4) After the human detection sensor 110 returns to the initial detection position γ, detection is performed with the rotation angle increased rightward by 3 × Δ α (i.e., the updated detection boundary range is α' = α +3 Δ α =80+30=110 °) as the detection boundary, and no user is detected in the left side boundary range thereof, and the human detection sensor 110 detects a user in the right side boundary range thereof, but since 3 × Δ α has reached the rotation angle limit value ω of the rotation unit 120, updating of the boundary range is not performed.
5) The center detection position γ' after the boundary is updated is determined, and the deflection angle thereof is calculated as: Δ γ = | β 1- β 2|/2=15 °, and since β 1< β 2, i.e. 15 ° deflection to the right, as a center the position γ 'is detected and γ' is recorded to the memory module.
6) It is determined whether the sum of the horizontal leftward turning angle β 1 and the horizontal rightward turning angle β 2 is greater than a horizontal preset value θ, for example, the horizontal preset value θ =10 °, the control unit 130 needs to detect the person by taking the center detection position γ' as the center and taking each of the left and right 15 ° [ β 1+ β 2)/2 = (0 + 30)/2 =15 ° ] as the maximum rotation angle.
Referring to fig. 3, the human detection device 100 is installed at a position in the middle of a room.
S1, the horizontal detection angle of the human detection sensor 110 is α (a solid line angle, α =80 °), the rotation angle limit value of the rotation unit is ω (a solid line angle, ω =30 °, with a dotted line on the same side), and the actual detection angle range is α +2 ω (a dotted line angle, at this time, α +2 ω =140 °).
S2, after the initial electrification, the human detection sensor 110 is fixed at the initial detection position gamma for human detection, and then the human detection sensor is used for detecting the human
1) The human detection sensor 110 detects the user within its left boundary, and records the horizontal left rotation angle β 1=1 × Δ α =10 °. The human detection sensor 110 detects the user within the range of the right boundary thereof, and records the horizontal rightward rotation angle β 2=1 × Δ α =10 ° (Δ α =10 °).
2) After the human detection sensor 110 returns to the initial detection position γ, detection is performed with the rotation angle increased by Δ α to the left and to the right, respectively (i.e., the update detection boundary range is α' = α +2 Δ α =80+20=100 °) as the detection boundary, and if no user is detected in the left boundary range, and if the human detection sensor 110 detects a user in the right boundary range, the horizontal right rotation angle β 2=2 Δ α =20 ° is recorded.
3) After the human detection sensor 110 returns to the initial detection position γ, detection is performed with the rotation angle increased by Δ α to the left and increased by 2 × Δ α to the right (i.e., the update detection boundary range is α' = α +3 Δ α =80+30=110 °) as the detection boundary, and the user is not detected in the left side boundary range thereof and the user is not detected in the right side boundary range thereof by the human detection sensor 110.
4) The center detection position γ' after the boundary is updated is determined, and the deflection angle thereof is calculated as: Δ γ = | β 1- β 2|/2=5 °, and since β 1< β 2, i.e. a 5 ° deflection to the right, as a center the position γ 'is detected and γ' is recorded to the memory module.
5) It is determined whether the sum of the horizontal leftward turning angle β 1 and the horizontal rightward turning angle β 2 is greater than a horizontal preset value θ, for example, the horizontal preset value θ =10 °, the control unit 130 needs to detect the person by taking the center detection position γ' as the center and taking each of the left and right 15 ° [ β 1+ β 2)/2 = (0 + 30)/2 =15 ° ] as the maximum rotation angle.
In other embodiments, the human detection device needs to calculate the detection boundary in the vertical direction, and the calculation method is the same as that described above, and is not described again.
Compared with the prior art, the technical scheme of the invention has the following technical effects:
the invention adopts the rotating unit to drive the human sensing detection sensor to rotate, and utilizes the detection algorithm in the control unit to automatically judge the installation position, thereby reducing the rotation detection of useless dead angles or stopping the rotation after judging the detection angle, reducing the power consumption of the human sensing detection device and improving the user experience.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. Machine in air conditioning, its characterized in that includes:
a human detection device fixed to the housing;
a human detection sensor having an initial detection boundary angle range of α;
a rotating unit which is fixedly connected with the human detection sensor and drives the human detection sensor to rotate;
the control unit is in communication connection with the human detection sensor and the rotating unit and is used for receiving detection signals, calculating detection results and sending control commands;
the control unit is used for calculating a rotation angle beta of the rotation unit when a user is not detected;
the control unit is further configured to calculate an angle range α' of an updated detection boundary of the human detection sensor;
the rotation angle beta comprises a horizontal left rotation angle beta 1 and a horizontal right rotation angle beta 2; the control unit is provided with a storage module for storing an initial detection position gamma and a central detection position gamma' of the human detection sensor;
the control unit is used for calculating a deflection angle delta gamma to determine a central detection position gamma' of the human detection sensor, and the calculation formula of the deflection angle delta gamma is delta gamma = | beta 1-beta 2|/2; when β 1< β 2, the center detection position γ' is deflected rightward by Δ γ from the initial detection position γ; when β 1 ≧ β 2, the center detection position γ' is deflected leftward by Δ γ from the initial detection position γ.
2. An indoor unit of an air conditioner according to claim 1, wherein the rotation angle β is calculated by β = n × Δ α, where n is the number of rotations and Δ α is the rotation angle per rotation.
3. The indoor unit of claim 1, wherein the calculation formula of the angle range α 'of the updated detection boundary is α' = α +2 β.
4. An air conditioning indoor unit according to claim 1, wherein the control unit is further configured to store a level preset value θ.
5. The indoor unit of claim 4, wherein the control unit is configured to control the human detection sensor to perform human detection while stationary around a center detection position γ' when β 1+ β 2 ≦ θ; when β 1+ β 2> θ, the human detection sensor is controlled to detect a rotating human with the center detection position γ' as the center and the rotation angle of (β 1+ β 2)/2 as the rotation angle.
6. An indoor unit of an air conditioner according to claim 1, wherein the rotation limit value of the rotation unit is ω, and the rotation angle β satisfies the relation: beta is not more than omega; the angle range α' of the updated detection boundary satisfies the relation: alpha' is less than or equal to alpha +2 omega.
7. The indoor unit of claim 1, wherein the detection sensor is any one of an infrared human detection sensor, a camera image recognition sensor, or a radar wave human detection sensor.
8. An indoor unit of an air conditioner according to claim 1, wherein the storage module is provided separately from the control unit and is electrically connected to the control unit.
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| CN108844175A (en) * | 2018-03-12 | 2018-11-20 | 青岛海信日立空调***有限公司 | Judge the method, apparatus and air-conditioning of the installation direction of infrared force-feeling sensor |
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| JP2007032887A (en) * | 2005-07-25 | 2007-02-08 | Mitsubishi Electric Corp | Air conditioner and mobile radiation temperature detector |
| CN103032942A (en) * | 2008-02-08 | 2013-04-10 | 松下电器产业株式会社 | Air conditioner |
| CN203443032U (en) * | 2013-08-16 | 2014-02-19 | 海尔集团公司 | Air conditioner indoor unit and air conditioner |
| CN107490152A (en) * | 2017-09-11 | 2017-12-19 | 广东美的制冷设备有限公司 | Control method, air conditioner and the storage medium of air conditioner |
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