CN109442695A - Air-conditioning and fresh air system predictability control method and system based on occupancy - Google Patents
Air-conditioning and fresh air system predictability control method and system based on occupancy Download PDFInfo
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 40
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 93
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 46
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 46
- 230000009471 action Effects 0.000 claims description 13
- 230000004927 fusion Effects 0.000 claims description 5
- 230000035945 sensitivity Effects 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 229960004424 carbon dioxide Drugs 0.000 description 35
- 238000005286 illumination Methods 0.000 description 9
- 238000005265 energy consumption Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012549 training Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/65—Concentration of specific substances or contaminants
- F24F2110/70—Carbon dioxide
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of air-conditioning based on occupancy and fresh air system predictability control methods and system, wherein method is the following steps are included: acquisition current indoor image and current indoor gas concentration lwevel data；Current indoor number is identified according to current indoor image and/or current indoor gas concentration lwevel data；Temperature variation and changes of concentrations of carbon dioxide amount after predicting the first preset duration according to current indoor gas concentration lwevel data and current indoor number；Air-conditioning and/or fresh air system are adjusted according to temperature variation and changes of concentrations of carbon dioxide amount.This method accurately identifies occupancy by off-the-air picture and/or indoor carbon dioxide concentration data, and it is accurately adjusted according to occupancy and adjusts air-conditioning and/or fresh air system, to effectively increase the accuracy of number identification, and then the accuracy of air-conditioning and the control of fresh air system predictability is improved, it is simple easily to realize.
Description
Technical field
The present invention relates to air-conditioning and fresh air system Optimized-control Technique field, in particular to a kind of skies based on occupancy
Tune and fresh air system predictability control method and system.
Background technique
In indoor environmental condition control, indoor air quality usually passes through supply fresh air and is maintained and improved.By practical institute
It needs fresh air volume and occupancy to have very big association, provides fresh air volume by actual demand, can be avoided and determine air quantity bring energy consumption wave
Take.
Number identification technology is a hot research topic.The means of currently used identification number include: carbon dioxide
Concentration sealing, video camera detection, infrared technology detection, wireless and Bluetooth technology identification, voice recognition, lift car weight
Quantity sensor estimation, attendance recorder record etc..
In addition, some number prediction modes based on data are also learned more and more with the progress of computer technology
Persons study application, and historical data training number variation model, the Markov approach of multiple sensors is such as combined to predict people
Exponential model etc..Gas concentration lwevel can reflect interior as a kind of indoor environment parameter for being easier to obtain to a certain extent
Ventilation quantity and ventilation effectiveness and other pollutants concentration, therefore, using gas concentration lwevel as evaluation room air product
The index of matter is a kind of more simple, effective mode.With the development of computer image recognition technology, video monitoring equipment
The reduction of cost identifies that human behavior, quantity also have become a kind of more typical mode by camera.
Existing research achievement shows, the mode of multi-sensor data training of human exponential model is sensor is abundant, data
In the case that sample is sufficient, by suitable training method, higher precision can be obtained.But different occasions are directed to, it is selected
Sensor combinations it is different and longer the time required to the training of model, therefore for different form, different user
The building or room that formula, different personnel work and rest regular, are required to specifically design suitable number identification method.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, an object of the present invention is to provide a kind of air-conditioning based on occupancy and fresh air system predictability controls
Method processed, this method can effectively improve the accuracy of number identification, and then improve air-conditioning and the control of fresh air system predictability
Accuracy, it is simple easily to realize.
It is another object of the present invention to propose a kind of air-conditioning based on occupancy and the control of fresh air system predictability
System.
In order to achieve the above objectives, one aspect of the present invention embodiment proposes a kind of air-conditioning based on occupancy and fresh air system
Predictability of uniting control method, comprising the following steps: acquisition current indoor image and current indoor gas concentration lwevel data；According to
The current indoor image and/or the current indoor gas concentration lwevel data identify current indoor number；Worked as according to described
Gas concentration lwevel data and the current indoor number predict temperature variation and dioxy after the first preset duration in cup
Change concentration of carbon variable quantity；Air-conditioning and/or fresh air system are adjusted according to the temperature variation and the changes of concentrations of carbon dioxide amount
System.
The air-conditioning and fresh air system predictability control method based on occupancy of the embodiment of the present invention, pass through off-the-air picture
And/or indoor carbon dioxide concentration data accurately identifies occupancy, and adjusting sky is accurately adjusted according to occupancy
Tune and/or fresh air system to effectively increase the accuracy of number identification, and then improve air-conditioning and fresh air system predictability control
The accuracy of system is simple easily to realize.
In addition, the air-conditioning and fresh air system predictability control method according to the above embodiment of the present invention based on occupancy
There can also be following additional technical characteristic:
Further, in one embodiment of the invention, described according to the current indoor image data and/or described
Current indoor gas concentration lwevel data identify current indoor number, further comprise: acquisition current indoor brightness value；Described
Current indoor brightness value is more than or equal to preset threshold, and when current time is in the second preset duration, according to the current indoor
Image recognition current indoor number；It is less than the preset threshold or the current time the in the current indoor brightness value
In three preset durations, current indoor number is identified according to the current indoor gas concentration lwevel data.
Further, in one embodiment of the invention, wherein according to the current indoor gas concentration lwevel data
Identify the calculation formula of current indoor number are as follows:
Wherein, V is chamber interior volume, and Q is fresh air volume, ntFor the occupancy of t moment, k is what human body gave off carbon dioxide
Rate, C0For the gas concentration lwevel in fresh air, CtAnd Ct-ΔtThe respectively indoor carbon dioxide concentration of t and t- time Δt.
Further, in one embodiment of the invention, described according to the temperature variation and the carbon dioxide
Concentration variable quantity adjusts air-conditioning and/or fresh air system, further comprises: according to the movement control of the current indoor number and air-conditioning
System instruction formula obtains the start-stop time ratio of air-conditioning, than the control starting of air conditioner or to be stopped according to the start-stop time of the air-conditioning
Only；The start-stop time of fresh air system is obtained according to the action directive formula of the current indoor number and fresh air system
Than to be started or stoped according to the start-stop time of the fresh air system than controlling the fresh air system.
Further, in one embodiment of the invention, wherein the action directive formula of the air-conditioning are as follows:
RatioAC_adj=(1+s × (Occt-Occt-5)) ratioAC_o,
Wherein, ratioAC_adj is revised start and stop ratio, and ratioAC_o is default start and stop ratio, OcctAnd Occt-5Point
The occupancy of t moment and t-5 moment is not represented, and s is that air conditioner load changes sensitivity coefficient；
The action directive formula of the fresh air system are as follows:
RatioFAHU=Occt/ Occ_max,
Wherein, Occ_max is the maximum value of occupancy, and ratioFAHU is the runing time ratio of fresh air system.
In order to achieve the above objectives, another aspect of the present invention embodiment proposes a kind of air-conditioning and fresh air based on occupancy
System prediction control system, comprising: be set at least one image acquisition device of indoor first predetermined position, worked as with acquisition
Preceding off-the-air picture；It is set at least one gas concentration sensor of indoor second predetermined position, to acquire current indoor two
Carbonoxide concentration data；Controller, the controller respectively at least one described image acquisition device and at least one described gas
Concentration sensors are connected, and for receiving the current indoor image and/or the current indoor gas concentration lwevel data, lead to
It crosses data fusion to identify to obtain current indoor number, according to the current indoor gas concentration lwevel data and the current indoor
Number obtains the temperature variation after the first preset duration and changes of concentrations of carbon dioxide amount, with according to the temperature variation and
The changes of concentrations of carbon dioxide amount adjusts air-conditioning and/or fresh air system.
The air-conditioning and fresh air system predictability control system based on occupancy of the embodiment of the present invention, pass through off-the-air picture
And/or indoor carbon dioxide concentration data accurately identifies occupancy, and adjusting sky is accurately adjusted according to occupancy
Tune and/or fresh air system to effectively increase the accuracy of number identification, and then improve air-conditioning and fresh air system predictability control
The accuracy of system is simple easily to realize.
In addition, the air-conditioning and fresh air system predictability control system according to the above embodiment of the present invention based on occupancy
There can also be following additional technical characteristic:
Further, in one embodiment of the invention, further includes: brightness value sensor, the brightness value sensor
It is connected with the controller, for acquiring current indoor brightness value；The controller is further used for shining in the current indoor
Angle value is more than or equal to preset threshold, and when current time is in the second preset time, is obtained according to the current indoor image data
To current indoor number；It is default in third to be less than the preset threshold or the current time in the current indoor brightness value
In time, current indoor number is obtained according to the current indoor gas concentration lwevel data.
Further, in one embodiment of the invention, described image collector is camera or camera, the gas
Concentration sensors are carbon dioxide sensor.
Further, in one embodiment of the invention, first predeterminated position is above indoor entrance.
Further, in one embodiment of the invention, further includes: at least one actuator, for controlling the sky
The start and stop of tune and/or fresh air system.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is the air-conditioning and fresh air system predictability control method based on occupancy according to one embodiment of the invention
Flow chart；
Fig. 2 is to be calculated according to the occupancy identification of one embodiment of the invention merged based on video with carbon dioxide data
The schematic diagram of method；
Fig. 3 is the air-conditioning and fresh air system control flow chart according to the number identification of one embodiment of the invention；
Fig. 4 is the occupancy and practical occupancy identified according to the number recognition methods of one embodiment of the invention
Contrast schematic diagram；
Fig. 5 is bent according to the energy consumption of the air-conditioning and fresh air system Traditional control without number identification of one embodiment of the invention
Line；
Fig. 6 is according to the air-conditioning based on number identification of one embodiment of the invention and the energy of fresh air system predictability control
Consume curve；
Fig. 7 is the air-conditioning and fresh air system predictability control system based on occupancy according to one embodiment of the invention
Structural schematic diagram；
Fig. 8 is that the air-conditioning and fresh air system predictability according to the present invention one specific embodiment based on occupancy control
The structural schematic diagram of system.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
The air-conditioning proposed according to embodiments of the present invention based on occupancy is described with reference to the accompanying drawings and fresh air system is pre-
The property surveyed control method and system, describe the air-conditioning based on occupancy proposed according to embodiments of the present invention with reference to the accompanying drawings first
And fresh air system predictability control method.
Fig. 1 is the air-conditioning based on occupancy of one embodiment of the invention and the stream of fresh air system predictability control method
Cheng Tu.
As shown in Figure 1, should air-conditioning based on occupancy and fresh air system predictability control method the following steps are included:
In step s101, current indoor image and current indoor gas concentration lwevel data are acquired.
In step s 102, cup is worked as according to current indoor image and/or the identification of current indoor gas concentration lwevel data
Interior number.
Wherein, in one embodiment of the invention, according to current indoor image data and/or current indoor carbon dioxide
Concentration data identifies current indoor number, further comprises: acquisition current indoor brightness value；Be greater than in current indoor brightness value etc.
In preset threshold, and when current time is in the second preset duration, according to current indoor image recognition current indoor number；Working as
Brightness value is less than preset threshold or current time in third preset duration in cup, according to current indoor gas concentration lwevel
Data identify current indoor number.
It is understood that number recognition methods of the embodiment of the present invention based on data anastomosing algorithm, enough in illumination
In the case of using image recognition technology identification disengaging room number, in illumination deficiency situation use gas concentration lwevel data
Identification number.Two kinds of recognition methods are covered the shortage mutually, and accuracy of identification is provided.It should be noted that the second preset duration can be with
For 7 to 24 points, third preset duration can be 0 to 7 point, be not specifically limited herein.
Further, in one embodiment of the invention, wherein identified according to current indoor gas concentration lwevel data
The calculation formula of current indoor number are as follows:
Wherein, V is chamber interior volume, and Q is fresh air volume, ntFor the occupancy of t moment, k is what human body gave off carbon dioxide
Rate, C0For the gas concentration lwevel in fresh air, CtAnd Ct-ΔtThe respectively indoor carbon dioxide concentration of t and t- time Δt.
Specifically, as shown in Fig. 2, using video camera when the daily time is 7 to 24 points and higher indoor illumination intensity
The number of record passes in and out data to calculate occupancy；When indoor illumination intensity is lower be unfavorable for camera shooting or the time be 0
When to 7, number identification method is switched into gas concentration lwevel estimated number, evaluation method such as 1 institute of formula by video counts people
Show, wherein V is room volume, and Q is fresh air volume, ntFor the occupancy of t moment, k is the rate (k that human body gives off carbon dioxide
≈ 0.3L/minp), C0For the gas concentration lwevel in fresh air, CtAnd Ct-ΔtThe respectively indoor titanium dioxide of t and t- time Δt
Concentration of carbon；When calculating occupancy when being switched to based on gas concentration lwevel estimated number based on video, carbon dioxide is utilized
Clearing measure or initialization value of the number of method estimation as same day video counts people, to eliminate the cumulative errors of video counts people.
When in step s 103, according to current indoor gas concentration lwevel data and default current indoor number prediction first
Temperature variation and changes of concentrations of carbon dioxide amount after length.
In step S104, air-conditioning and/or fresh air system are adjusted according to temperature variation and changes of concentrations of carbon dioxide amount.
It is understood that the embodiment of the present invention can according to the occupancy identified, predict a period of time after room
The variation of interior temperature and gas concentration lwevel controls the start-stop of air conditioner and new blower in advance, changes cooling supply/heat, new
Air quantity avoids lag bring indoor temperature fluctuation and idle call according to temperature and gas concentration lwevel feedback control that from capable of wasting.
Further, in one embodiment of the invention, according to temperature variation and changes of concentrations of carbon dioxide amount tune
Air-conditioning and/or fresh air system are saved, further comprises: sky is obtained according to the action directive formula of current indoor number and air-conditioning
The start-stop time ratio of tune, according to the start-stop time of air-conditioning ratio control starting of air conditioner or stopping；According to current indoor number and newly
The start-stop time ratio for obtaining fresh air system of the action directive formula of wind system, according to the start-stop time of fresh air system ratio
Control fresh air system starts or stops.
Wherein, in one embodiment of the invention, wherein the action directive formula of air-conditioning are as follows:
RatioAC_adj=(1+s × (Occt-Occt-5)) ratioAC_o,
Wherein, ratioAC_adj is revised start and stop ratio, and ratioAC_o is default start and stop ratio, OcctAnd Occt-5Point
The occupancy of t moment and t-5 moment is not represented, and s is that air conditioner load changes sensitivity coefficient；
The action directive formula of fresh air system are as follows:
RatioFAHU=Occt/ Occ_max,
Wherein, Occ_max is the maximum value of occupancy, and ratioFAHU is the runing time ratio of fresh air system.
It is understood that room temperature and carbon dioxide according to the occupancy identified, after predicting a period of time
The variation of concentration controls the start-stop of air conditioner and new blower in advance, changes cooling supply/heat, fresh air volume.Wherein, air conditioner
Action directive provided by formula 2, in formula, ratioAC_adj is revised start and stop ratio, and ratioAC_o is that former control is calculated
The start and stop ratio that method provides, Occt and Occt-5 respectively represent the people of the t moment and (t-5 minutes) moment that are calculated by formula (1)
Number, s are air conditioner load variations sensitivity coefficient；The action directive of new blower is provided by formula 3, and in formula, Occ_max is
The maximum user number of room design, ratioFAHU are the runing time ratio of new blower.
RatioAC_adj=(1+s × (Occt-Occt-5)) ratioAC_o (2),
RatioFAHU=Occt/Occ_max (3)。
Specifically, as shown in figure 3, the air-conditioning of the embodiment of the present invention identified based on number and fresh air system predictability control
The process of system, comprising the following steps:
The first step periodically identifies occupancy with certain time step-length；
Second step calculates air conditioner start-stop time ratio according to occupancy and formula 2, according to start and stop than control air conditioner
It starts or stops；
Third step calculates new blower start-stop time ratio according to occupancy and formula 3, according to start and stop than controlling new blower
It starts or stops.
Below by by specific embodiment to based on occupancy air-conditioning and fresh air system predictability control method carry out
It is further described.
As shown in Figure 4, it is shown that the occupancy and practical interior that the number recognition methods of the embodiment of the present invention identifies
The comparison of number.Thick line in Fig. 4 indicates the versus time curve of true occupancy, and filament indicates to be based on titanium dioxide
The versus time curve of the occupancy of concentration of carbon identification, hollow line indicate the occupancy identified based on video data
Versus time curve.Filament and hollow line collectively constitute the number that method proposed in this paper is identified.By typical case's day
Known to number curve: 1) the number variation that the method that the video that the embodiment of the present invention proposes is combined with carbon dioxide is identified becomes
Gesture more meets with truth；2) night use gas concentration lwevel estimation number can be used as video counts people initialization and eliminate
The effective means of accumulated error.If the deviation for thinking system identification number and effective strength is relatively to accurately identify no more than 1, comprehensive
More days demographics situations are closed, the number recognition methods that the embodiment of the present invention proposes can obtain the accuracy of identification more than 91%.
As shown in Figure 5, it is shown that the air-conditioning of unmanned number identification and the energy consumption curve of fresh air system Traditional control, Fig. 6 are shown
The energy consumption curve of air-conditioning and the control of fresh air system predictability based on number identification.It can be seen from the figure that being known based on number
Under other predictive control, the runing time of air conditioner and fresh air system is significantly less than the Traditional control of no number identification.Therefore,
Air conditioner and new fan energy consumption substantially reduce.Statistical result showed, under the predictive control based on number identification, new fan energy consumption
The 15-20% of Traditional control only without number identification, and air-conditioning system total energy consumption can reduce by 39% or so.
The air-conditioning and fresh air system predictability control method based on occupancy proposed according to embodiments of the present invention, passes through
Off-the-air picture and/or indoor carbon dioxide concentration data accurately identify occupancy, and are accurately adjusted according to occupancy
Section adjusts air-conditioning and/or fresh air system, to effectively increase the accuracy of number identification, and then improves air-conditioning and fresh air system
The accuracy of predictability control is simple easily to realize.
The air-conditioning proposed according to embodiments of the present invention based on occupancy is described referring next to attached drawing and fresh air system is pre-
The property surveyed control system.
Fig. 7 is the air-conditioning and fresh air system predictability control system based on occupancy of one embodiment of the invention
As shown in fig. 7, the air-conditioning and fresh air system predictability control system 10 based on occupancy include: at least one
Image acquisition device 100, at least one gas concentration sensor 200 and controller 300.
Wherein, it is set at least one image acquisition device 100 of indoor first predetermined position, to acquire current indoor figure
Picture；It is set at least one gas concentration sensor 200 of indoor second predetermined position, to acquire current indoor carbon dioxide
Concentration data；Controller 300 is connected at least one image acquisition device 100 and at least one gas concentration sensor 200 respectively,
For receiving current indoor image and/or current indoor gas concentration lwevel data, identifies to obtain by data fusion and work as cup
Interior number, the temperature change after the first preset duration is obtained according to current indoor gas concentration lwevel data and current indoor number
Amount and changes of concentrations of carbon dioxide amount, to adjust air-conditioning and/or fresh air according to temperature variation and changes of concentrations of carbon dioxide amount
System.The system 10 of the embodiment of the present invention effectively increases the accuracy of number identification, and then raising air-conditioning and fresh air system are pre-
The accuracy of the property surveyed control is simple easily to realize.
Further, in one embodiment of the invention, further includes: brightness value sensor 400.Wherein, brightness value passes
Sensor 400 is connected with controller 300, for acquiring current indoor brightness value；Controller 300 is further used for shining in current indoor
Angle value is more than or equal to preset threshold, and when current time is in the second preset time, is worked as according to current indoor image data
Preceding occupancy；It is less than preset threshold or current time in third preset time in current indoor brightness value, according to working as cup
Interior gas concentration lwevel data obtain current indoor number.
Further, in one embodiment of the invention, image acquisition device 100 can be camera or camera, gas
Concentration sensors 200 are carbon dioxide sensor.
Further, in one embodiment of the invention, the first predeterminated position is above indoor entrance.
It is understood that one or more cameras or camera, are installed on above room entrance, with a timing
Between step-length, shoot the image at room entrance, according to the difference of adjacent multiple image, the number in identification disengaging room.One
Or multiple carbon dioxide sensors, it is used to gas concentration lwevel in measuring chamber.It should be noted that camera or camera with
And the setting quantity of carbon dioxide sensor, those skilled in the art can be configured according to the actual situation, not do have herein
Body limits.
Further, in one embodiment of the invention, further includes: at least one actuator 500.Wherein, at least one
A actuator 500 is used to control the start and stop of air-conditioning and/or fresh air system.
Occupancy identification and air-conditioning and fresh air system predictability system 10 are carried out in detail below in conjunction with specific embodiment
It is thin to illustrate.
As shown in figure 8, controller 300 can be STM32F103RCT6 one-chip computer module, it is of course also possible to be other classes
The single-chip microcontroller of type is illustrated by taking STM32F103RCT6 one-chip computer module as an example herein, is not specifically limited, and brightness value
Sensor 400 can be illumination analogue collection module, and the quantity of illumination analogue collection module 400 is specifically arranged, this
Field technical staff can be configured according to the actual situation, also be not specifically limited herein.
Specifically, occupancy identification and air-conditioning and fresh air system predictability system 10 include: that at least one image is known
Other module 100, at least one gas concentration analogue collection module 200, STM32F103RCT6 one-chip computer module 300, at least one
A illumination analogue collection module 400, at least one relay module 500 and a power module 600.
Wherein, at least one picture recognition module 100 identifies the current indoor image of acquisition, obtains disengaging room
Between number；At least one gas concentration analogue collection module 200 acquires the output signal of gas concentration sensor, conversion
For current indoor carbon dioxide concentration value；At least one illumination analogue collection module 400 collects the output letter of illuminance transducer
Number, be converted to current indoor brightness value；At least one relay module 500 controls the start and stop of air conditioner and new blower；One electricity
The input electric power of 220V is transformed to single-chip microcontroller, relay relevant work voltage by source module 600, is supplied to single-chip microcontroller, relay
Electricity；One STM32F103RCT6 one-chip computer module 300 is dense at least one picture recognition module 100, at least one gas respectively
Spend analogue collection module 200, at least one illumination analogue collection module 400, at least one relay module 500 and electricity
Source module 600 is connected, and for receiving current indoor image and/or current indoor gas concentration lwevel data, passes through data fusion
Identification obtain current indoor number, according to current indoor gas concentration lwevel data and current indoor number obtain first it is default when
Temperature variation and changes of concentrations of carbon dioxide amount after length, according to temperature variation and the control of changes of concentrations of carbon dioxide amount
The on-off of relay further controls the start and stop of air conditioner and new blower.
To sum up, the embodiment of the present invention carries out data fusion using video data and gas concentration lwevel data and identifies indoor people
Number, and then air-conditioning and the control of fresh air system predictability are carried out using the occupancy of identification.The system 10 of the embodiment of the present invention is wrapped
A controller 300 is included, is identified for receiving video or image, gas concentration lwevel data, and by data anastomosing algorithm
Occupancy, to control the power output of air-conditioning system and fresh air system according to the occupancy predictability identified, so as to full
Sufficient comfortable and health requirements, and realize air conditioner system energy saving；One or more cameras or camera are installed on room discrepancy
Above mouthful, for identifying the number in disengaging room；One or more carbon dioxide sensors are dense for measuring indoor carbon dioxide
Degree；One or more actuators, for controlling the start and stop of air conditioner and new blower.
It should be noted that aforementioned air-conditioning and fresh air system predictability control method embodiment to based on occupancy
The air-conditioning and fresh air system predictability control device based on occupancy for being also applied for the embodiment are illustrated, herein no longer
It repeats.
The air-conditioning and fresh air system predictability control system based on occupancy proposed according to embodiments of the present invention, passes through
Off-the-air picture and/or indoor carbon dioxide concentration data accurately identify occupancy, and are accurately adjusted according to occupancy
Section adjusts air-conditioning and/or fresh air system, to effectively increase the accuracy of number identification, and then improves air-conditioning and fresh air system
The accuracy of predictability control is simple easily to realize.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of air-conditioning and fresh air system predictability control method based on occupancy, which comprises the following steps:
Acquire current indoor image and current indoor gas concentration lwevel data；
Current indoor number is identified according to the current indoor image and/or the current indoor gas concentration lwevel data；
Temperature after predicting the first preset duration according to the current indoor gas concentration lwevel data and the current indoor number
Spend variable quantity and changes of concentrations of carbon dioxide amount；And
Air-conditioning and/or fresh air system are adjusted according to the temperature variation and the changes of concentrations of carbon dioxide amount.
2. the air-conditioning and fresh air system predictability control method, feature according to claim 1 based on occupancy exists
In described to identify current indoor according to the current indoor image data and/or the current indoor gas concentration lwevel data
Number further comprises:
Acquire current indoor brightness value；
It is more than or equal to preset threshold in the current indoor brightness value, and when current time is in the second preset duration, according to institute
State current indoor image recognition current indoor number；
It is less than the preset threshold or the current time in third preset duration in the current indoor brightness value, according to
The current indoor gas concentration lwevel data identify current indoor number.
3. the air-conditioning and fresh air system predictability control method, feature according to claim 2 based on occupancy exists
In, wherein
The calculation formula of current indoor number is identified according to the current indoor gas concentration lwevel data are as follows:
Wherein, V is chamber interior volume, and Q is fresh air volume, ntFor the occupancy of t moment, k is the rate that human body gives off carbon dioxide,
C0For the gas concentration lwevel in fresh air, CtAnd Ct-ΔtThe respectively indoor carbon dioxide concentration of t and t- time Δt.
4. the air-conditioning and fresh air system predictability control method, feature according to claim 1 based on occupancy exists
In, it is described that air-conditioning and/or fresh air system are adjusted according to the temperature variation and the changes of concentrations of carbon dioxide amount, further
Include:
The start-stop time ratio of air-conditioning is obtained according to the action directive formula of the current indoor number and air-conditioning, according to institute
The start-stop time of air-conditioning is stated than controlling the starting of air conditioner or stopping；
The start-stop time of fresh air system is obtained according to the action directive formula of the current indoor number and fresh air system
Than to be started or stoped according to the start-stop time of the fresh air system than controlling the fresh air system.
5. the air-conditioning and fresh air system predictability control method, feature according to claim 4 based on occupancy exists
In, wherein
The action directive formula of the air-conditioning are as follows:
RatioAC_adj=(1+s × (Occt-Occt-5)) ratioAC_o,
Wherein, ratioAC_adj is revised start and stop ratio, and ratioAC_o is default start and stop ratio, OcctAnd Occt-5It respectively represents
The occupancy of t moment and t-5 moment, s are that air conditioner load changes sensitivity coefficient；
The action directive formula of the fresh air system are as follows:
RatioFAHU=Occt/ Occ_max,
Wherein, Occ_max is the maximum value of occupancy, and ratioFAHU is the runing time ratio of fresh air system.
6. a kind of air-conditioning and fresh air system predictability control system based on occupancy characterized by comprising
It is set at least one image acquisition device of indoor first predetermined position, to acquire current indoor image；
It is set at least one gas concentration sensor of indoor second predetermined position, it is dense to acquire current indoor carbon dioxide
Degree evidence；And
Controller, the controller respectively at least one described image acquisition device and at least one described gas concentration sensor
It is connected, for receiving the current indoor image and/or the current indoor gas concentration lwevel data, is known by data fusion
Current indoor number is not obtained, obtains first according to the current indoor gas concentration lwevel data and the current indoor number
Temperature variation and changes of concentrations of carbon dioxide amount after preset duration, according to the temperature variation and the carbon dioxide
Concentration variable quantity adjusts air-conditioning and/or fresh air system.
7. the air-conditioning and fresh air system predictability control system, feature according to claim 6 based on occupancy exists
In, further includes:
Brightness value sensor, the brightness value sensor is connected with the controller, for acquiring current indoor brightness value；
The controller is further used for being more than or equal to preset threshold in the current indoor brightness value, and current time is second
When in preset time, current indoor number is obtained according to the current indoor image data；It is small in the current indoor brightness value
In the preset threshold or the current time in third preset time, according to the current indoor gas concentration lwevel number
According to obtaining current indoor number.
8. the air-conditioning and fresh air system predictability control system, feature according to claim 6 based on occupancy exists
In described image collector is camera or camera, and the gas concentration sensor is carbon dioxide sensor.
9. the air-conditioning and fresh air system predictability control system, feature according to claim 6 based on occupancy exists
In first predeterminated position is above indoor entrance.
10. the air-conditioning and fresh air system predictability control system, feature according to claim 6 based on occupancy exists
In, further includes:
At least one actuator, for controlling the start and stop of the air-conditioning and/or fresh air system.
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