CN102444958A - Video people stream statistics-based fresh air system and energy-saving control method thereof - Google Patents
Video people stream statistics-based fresh air system and energy-saving control method thereof Download PDFInfo
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Abstract
A video people stream statistics-based fresh air system and an energy-saving control method thereof relate to the technical field of fresh air energy-saving control and aim to reduce the control difficulty and cost and improve the control real-time performance. The fresh air system comprises a video monitoring module, a video people number analysis module, a fresh air control module and a fresh air control execution module. The energy-saving control method of the fresh air system comprises the steps as follows, firstly, the video monitoring module is used for acquiring the video signal of the fresh air control area; secondly, the video people number analysis module is used for analyzing and counting out the amount of the people in the fresh air control area, and sending the result to the fresh air control module; thirdly, the fresh air control module outputs corresponding fresh air control signal to the fresh air control execution module according to the received result; and fourthly, the fresh air control execution module adjusts the fresh air supply quantity according to intensity of the received fresh air control signal. The method reduces the fresh air control difficulty and cost, and has strong control real-time performance.
Description
Technical field
The present invention relates to the fresh air energy-saving control technology, particularly relate to a kind of based on the VMC of video stream of people statistics and the technology of energy-saving control method thereof.
Background technology
As far back as 20 beginnings of the century, people have begun to adopt the mode of ventilation to improve indoor air environment.Afterwards, the people that appear as of refrigerated air-conditioning system had created comfortable air conditioner surroundings, but the global energy crisis of the seventies in 20th century makes this major power consumer of refrigerated air-conditioning system face serious test, the energy-saving and cost-reducing key link that becomes design of air conditioning.People improve the air-tightness and the thermal insulation of building on the one hand, reduce indoor minimum fresh air requirmente standard simultaneously, and concentration improves owing to can not get new wind dilution to cause indoor noxious pollutant; On the other hand, a large amount of novel buildings and entering dwelling house and public buildings such as ornament materials, household chemicals, household electrical appliance make the source of indoor environmental pollution thing and kind increasing, severe exacerbation indoor air quality.
The appearance of central air-conditioning VMC has realized the exchange of outdoor fresh air and room air, thereby has guaranteed the air quality of indoor environment, for people have created comfortable office and living environment.But in order to make air conditioner surroundings keep particular state; Air in original air conditioner surroundings carries out conditioning and purified treatment by people's requirement; Therefore the extraneous air that gets into must carry out same processing and remain unchanged to guarantee that mixed surrounding air is constant, and the energy consumption that makes the continuous a large amount of new wind that gets into handle is very big.
Existing building VMC is all planned, is designed according to resh air requirement per capita, and the control of VMC is generally then according to CO
2The measured CO of sensor
2Concentration value is controlled.But, because personnel exist flowability, so indoor CO
2Though concentration has certain correlation with number, trend might not clearly can not change the new wind control of adjustment in real time according to number.In addition, CO
2Sensor has stronger sensitiveness, and when the people was movable near sensor, the numerical value of sensor monitoring will rise, otherwise, then can descend; Thereby cause CO
2Detection have certain fluctuation, bring difficulty for new wind control.On the other hand, in order to satisfy CO in the building
2The requirement of concentration limit need be in the zones of different placement sensor, and this has also improved system cost greatly.
Summary of the invention
To the defective that exists in the above-mentioned prior art, technical problem to be solved by this invention provides a kind of new wind control difficulty and control cost low, that control is real-time VMC and energy-saving control method thereof based on video stream of people statistics.
In order to solve the problems of the technologies described above; A kind of VMC provided by the present invention based on video stream of people statistics; Comprise the new wind control Executive Module that is used for supplying with new wind, it is characterized in that: also comprise video monitoring modular, video number analysis module, new wind control module to new wind control area;
Said video monitoring modular is installed on new wind control area, and its VT is connected to the video reception end of video number analysis module;
The data output end of said video number analysis module is connected to the data receiver of new wind control module;
The control signal output of said new wind control module is connected to the control signal receiving terminal of new wind control Executive Module.
Further, said video monitoring modular is a camera.
Further, said video number analysis module is the video server that is built-in with video number analysis software.
Further, said video number analysis module comprises a video server, a host computer; The VT of said video monitoring modular is connected to the video reception end of video server; Be built-in with video number analysis software in the said host computer, its data receiver is connected to the data output end of video server, and its data output end is connected to the data receiver of new wind control module.
Further, said new wind control module is the PLC controller.
Further, said new wind control Executive Module comprises frequency converter and fresh air supply motor; The control signal output of said new wind control module is connected to the control signal receiving terminal of frequency converter, and the control signal input of said fresh air supply motor is connected to the frequency variation signal output of frequency converter.
The energy-saving control method of the VMC based on video stream of people statistics provided by the present invention is characterized in that concrete steps are following:
1) sets resh air requirement per capita;
2) utilize vision signal in the new wind of the video monitoring modular collection control area, and send the vision signal of being gathered to video number analysis module;
3) video number analysis module is analyzed the vision signal of input, adds up the personnel amount in the wind control area that makes new advances, and passes to new wind control module;
4) new wind control module calculates current fresh air supply amount according to the personnel amount statistical value of receiving, concrete computing formula is:
；
Wherein,
L Out Be current fresh air supply amount,
L Demand Be the resh air requirement per capita that sets in the step 1,
nBe personnel's quantity statistics value;
5) new wind control module is according to the corresponding new wind control signal of the result of calculation output of step 4, and the resh air requirement of new wind control Executive Module output and current fresh air supply amount that step 4 calculates are consistent.
Further, said video number analysis module passes to new wind control module through data communication mode with the personnel amount statistical value after adding up the personnel amount in the wind control area that makes new advances.
VMC and energy-saving control method thereof based on video stream of people statistics provided by the invention are through the vision signal in the new wind of the video monitoring modular collection control area, again according to vision signal statistician quantity; Then according to personnel amount control fresh air supply amount; This method has overcome the conventional new wind control method problem big to the environmental sensor dependence, and collection of video signal can not fluctuate because of walking about of people, and its new wind is controlled difficulty and controlled cost all lower; And because the maturation of the video analysis technology and the communication technology; The accuracy rate of demographics and real-time are all higher, so its control real-time is also stronger, can realize energy-on-demand to the full extent; Promptly satisfying under the prerequisite of comfort level, realizing optimum energy supply.
Description of drawings
Fig. 1 is the structured flowchart based on the VMC of video stream of people statistics of first embodiment of the invention;
Fig. 2 is the structured flowchart based on the VMC of video stream of people statistics of second embodiment of the invention.
The specific embodiment
Below in conjunction with description of drawings embodiments of the invention are described in further detail, but present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof all should be listed protection scope of the present invention in.
As shown in Figure 1; A kind of VMC that first embodiment of the invention provided based on video stream of people statistics; Comprise the new wind control Executive Module that is used for supplying with new wind, it is characterized in that: also comprise video monitoring modular, video number analysis module, new wind control module to new wind control area;
Said video monitoring modular is installed on new wind control area, and its VT is connected to the video reception end of video number analysis module;
The data output end of said video number analysis module is connected to the data receiver of new wind control module;
The control signal output of said new wind control module is connected to the control signal receiving terminal of new wind control Executive Module.
In the first embodiment of the invention; Said video monitoring modular is a camera; Said video number analysis module is the video server that is built-in with video number analysis software, and said new wind control module is the PLC controller, and said new wind control Executive Module comprises frequency converter and fresh air supply motor; The control signal output of said new wind control module is connected to the control signal receiving terminal of frequency converter, and the control signal input of said fresh air supply motor is connected to the frequency variation signal output of frequency converter.
In the first embodiment of the invention, built-in video number analysis software is the video analysis software of the rich peace Yinke skill VA-PC of Co., Ltd video server in the video server.
In the first embodiment of the invention, also comprise the touch-screen that is used to be provided with the PLC controller parameter, and be used to cooperate the expansion module of PLC controller control frequency converter operation.
First embodiment of the invention provided based on the energy-saving control method of the VMC of video stream of people statistics, it is characterized in that concrete steps are following:
1) sets resh air requirement per capita;
2) utilize vision signal in the new wind of the camera collection control area, and send the vision signal of being gathered to video server;
3) video server is analyzed the vision signal of input through its built-in video number analysis software, adds up the personnel amount in the wind control area that makes new advances, and the personnel amount statistical value is passed to the PLC controller through data communication mode;
4) the PLC controller calculates current fresh air supply amount according to the personnel amount statistical value of receiving, concrete computing formula is:
Wherein,
L Out Be current fresh air supply amount,
L Demand Be the resh air requirement per capita that sets in the step 1,
nBe personnel's quantity statistics value;
Calculate the current output frequency of frequency converter again according to current fresh air supply amount, concrete computing formula is:
Wherein,
fBe the current output frequency of frequency converter,
L Max Maximum fresh air supply amount for VMC;
5) the PLC controller is according to the corresponding new wind control signal of the result of calculation output of step 4; The output frequency of frequency converter and current output frequency that step 4 calculates are consistent; The fresh air supply rotating speed of motor is also adjusted with the variation of frequency converter output frequency, makes the resh air requirement of VMC output and the current fresh air supply amount that step 4 calculates be consistent.
In the energy-saving control method of first embodiment of the invention, the computing formula of frequency converter output frequency also can be modified in the said step 4:
Wherein,
αIt is the correction factor that factors such as flowability, installation partition and frequency air quantity corresponding relation uneven according to number, the people set.
As shown in Figure 2; A kind of VMC that second embodiment of the invention provided based on video stream of people statistics; Comprise the new wind control Executive Module that is used for supplying with new wind, it is characterized in that: also comprise video monitoring modular, video number analysis module, new wind control module to new wind control area;
Said video monitoring modular is installed on new wind control area, and its VT is connected to the video reception end of video number analysis module;
The data output end of said video number analysis module is connected to the data receiver of new wind control module;
The control signal output of said new wind control module is connected to the control signal receiving terminal of new wind control Executive Module.
In the second embodiment of the invention, said video number analysis module comprises a video server, a host computer; The VT of said video monitoring modular is connected to the video reception end of video server; Be built-in with video number analysis software in the said host computer, its data receiver is connected to the data output end of video server, and its data output end is connected to the data receiver of new wind control module.
In the second embodiment of the invention, built-in video number analysis software is the GV-NVR video analysis software of GeoVision company in the host computer.
In the second embodiment of the invention, said video monitoring modular is a camera, and said new wind control module is the PLC controller, and said new wind control Executive Module comprises frequency converter and fresh air supply motor; The control signal output of said new wind control module is connected to the control signal receiving terminal of frequency converter, and the control signal input of said fresh air supply motor is connected to the frequency variation signal output of frequency converter.
In the second embodiment of the invention, also comprise the touch-screen that is used to be provided with the PLC controller parameter, and be used to cooperate the expansion module of PLC controller control frequency converter operation.
Second embodiment of the invention provided based on the energy-saving control method of the VMC of video stream of people statistics, it is characterized in that concrete steps are following:
1) sets resh air requirement per capita;
2) utilize vision signal in the new wind of the camera collection control area, and send the vision signal of being gathered to video server, transfer to host computer by video server again;
3) host computer is analyzed the vision signal of input through its built-in video number analysis software, adds up the personnel amount in the wind control area that makes new advances, and the personnel amount statistical value is passed to the PLC controller;
4) the PLC controller calculates current fresh air supply amount according to the personnel amount statistical value of receiving, concrete computing formula is:
；
Wherein,
L Out Be current fresh air supply amount,
L Demand Be the resh air requirement per capita that sets in the step 1,
nBe personnel's quantity statistics value;
Calculate the current output frequency of frequency converter again according to current fresh air supply amount, concrete computing formula is:
；
Wherein,
fBe the current output frequency of frequency converter,
L Max Maximum fresh air supply amount for VMC;
5) the PLC controller is according to the corresponding new wind control signal of the result of calculation output of step 4; The output frequency of frequency converter and current output frequency that step 4 calculates are consistent; The fresh air supply rotating speed of motor is also adjusted with the variation of frequency converter output frequency, makes the resh air requirement of VMC output and the current fresh air supply amount that step 4 calculates be consistent.
In second kind of energy-saving control method of first embodiment of the invention, the computing formula of frequency converter output frequency also can be modified in the said step 4:
；
Wherein,
αIt is the correction factor that factors such as flowability, installation partition and frequency air quantity corresponding relation uneven according to number, the people set.
In the various embodiments of the present invention; The algorithm that the PLC controller is exported new wind control signal according to the personnel amount statistical value can be controlled according to the related specifications and the standard of fresh air supply, like " heating and ventilation and air conditioning design specification " and standards such as " public building energy-saving design standards ", the given new per capita wind reference value of standard.
In the various embodiments of the present invention; Consider the characteristic of fresh air supply motor; PLC controller internal control algorithm design can adopt hierarchical control method design, is about to people's numerical value and is divided into a plurality of number ranges, according to these a plurality of number ranges the fresh air supply amount is divided into a plurality of gears and regulates.
Claims (8)
1. the VMC based on video stream of people statistics comprises the new wind control Executive Module that is used for supplying with to new wind control area new wind, it is characterized in that: also comprise video monitoring modular, video number analysis module, new wind control module;
Said video monitoring modular is installed on new wind control area, and its VT is connected to the video reception end of video number analysis module;
The data output end of said video number analysis module is connected to the data receiver of new wind control module;
The control signal output of said new wind control module is connected to the control signal receiving terminal of new wind control Executive Module.
2. system according to claim 1 is characterized in that: said video monitoring modular is a camera.
3. system according to claim 1 is characterized in that: said video number analysis module is the video server that is built-in with video number analysis software.
4. system according to claim 1 is characterized in that: said video number analysis module comprises a video server, a host computer; The VT of said video monitoring modular is connected to the video reception end of video server; Be built-in with video number analysis software in the said host computer, its data receiver is connected to the data output end of video server, and its data output end is connected to the data receiver of new wind control module.
5. system according to claim 1 is characterized in that: said new wind control module is the PLC controller.
6. system according to claim 1 is characterized in that: said new wind control Executive Module comprises frequency converter and fresh air supply motor; The control signal output of said new wind control module is connected to the control signal receiving terminal of frequency converter, and the control signal input of said fresh air supply motor is connected to the frequency variation signal output of frequency converter.
7. the energy-saving control method of the described VMC based on video stream of people statistics of a claim 1 is characterized in that concrete steps are following:
1) sets resh air requirement per capita;
2) utilize vision signal in the new wind of the video monitoring modular collection control area, and send the vision signal of being gathered to video number analysis module;
3) video number analysis module is analyzed the vision signal of input, adds up the personnel amount in the wind control area that makes new advances, and passes to new wind control module;
4) new wind control module calculates current fresh air supply amount according to the personnel amount statistical value of receiving, concrete computing formula is:
Wherein,
L Out Be current fresh air supply amount,
L Demand Be the resh air requirement per capita that sets in the step 1,
nBe personnel's quantity statistics value;
5) new wind control module is according to the corresponding new wind control signal of the result of calculation output of step 4, and the resh air requirement of new wind control Executive Module output and current fresh air supply amount that step 4 calculates are consistent.
8. method according to claim 7 is characterized in that: said video number analysis module passes to new wind control module through data communication mode with the personnel amount statistical value after adding up the personnel amount in the wind control area that makes new advances.
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| CN103973472A (en) * | 2013-01-31 | 2014-08-06 | 西门子公司 | Method and device used for determining presence of personnel in building |
| CN105485840A (en) * | 2015-12-16 | 2016-04-13 | 深圳达实智能股份有限公司 | Control method and system for air supply of air conditioner |
| CN105967028A (en) * | 2016-07-31 | 2016-09-28 | 蔡璟 | Energy-saving elevator car ventilation system based on elevator taking people recognition |
| CN106006318A (en) * | 2016-07-31 | 2016-10-12 | 蔡璟 | Energy-saving elevator car ventilation system with air outlet automatically shielded |
| CN106091283A (en) * | 2016-06-28 | 2016-11-09 | 韩斌 | A kind of system controlling air purifier based on indoor image detecting |
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| CN109883005A (en) * | 2019-03-26 | 2019-06-14 | 广州远正智能科技股份有限公司 | Terminal tail end air conditioner device intelligence control system, method, medium and equipment |
| CN109812942A (en) * | 2019-03-27 | 2019-05-28 | 上海众鑫建筑设计研究院有限公司 | A kind of real-time air-conditioner control system and its control method for adjusting fresh air volume |
| CN110567103A (en) * | 2019-09-16 | 2019-12-13 | 珠海格力电器股份有限公司 | Air conditioner control method and device and air conditioner |
| CN110986297A (en) * | 2019-12-19 | 2020-04-10 | 苏州特诺尔实验室系统工程有限公司 | Laboratory air conditioner energy-saving control method and system based on UWB positioning |
| CN111174385A (en) * | 2019-12-30 | 2020-05-19 | 重庆大学 | Fresh air system and fresh air control method based on 5G network and people flow identification |
| CN112923538A (en) * | 2021-02-22 | 2021-06-08 | 天津大学 | Accurate air supply method of large-space fresh air system based on people flow density adjustment |
| CN113465073A (en) * | 2021-06-21 | 2021-10-01 | 青岛海尔空调电子有限公司 | Control method of ventilation system and ventilation system |
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