CN103727639B - Central air-conditioning energy-saving system based on body and method - Google Patents

Central air-conditioning energy-saving system based on body and method Download PDF

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CN103727639B
CN103727639B CN201410010286.1A CN201410010286A CN103727639B CN 103727639 B CN103727639 B CN 103727639B CN 201410010286 A CN201410010286 A CN 201410010286A CN 103727639 B CN103727639 B CN 103727639B
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China
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central air
conditioning
equipment
energy
module
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CN201410010286.1A
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CN103727639A (en
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王少林
于福奎
张桂青
于国丽
罗佳君
刘学亭
刘公明
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山东建筑大学
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Abstract

The present invention relates to a kind of central air-conditioning energy-saving system based on body and method, it can overcome and utilizes integrated information to carry out energy-conservation deficiency, this system acquisition environmental information, status information of equipment, equipment energy consumption information etc. store in system database, then by information MAP in database to central air-conditioning body, on the basis of formulating energy-conservation rule, ontology model is resolved, reasoning and analysis, judge the operation duty of air-conditioning, the equipment carrying out start and stop air-conditioning system with this, is finally reached energy-conservation purpose.It is some space cells being provided with central air-conditioning terminal in including building, are provided with context detection module in it;Being additionally provided with Central air-conditioning unit installing space in building, in air-conditioner set installing space in addition to being provided with context detection module, being additionally provided with air-conditioning equipment control module, equipment energy consumption metering module, DDC controller and Surveillance center has management computer simultaneously.

Description

Central air-conditioning energy-saving system based on body and method
Technical field:
The present invention relates to a kind of central air-conditioning energy-saving system based on body and method, belong to automatically control, power-saving technology The field combined with computer application.
Background technology:
China is in the period of a rapid economic development, and urbanization process is progressively accelerated, for meeting the work of people Make and life requirement, need newly-built substantial amounts of building, how to realize the sustainable development of building, create for people energy-conservation comfortable Environment, be building trade personnel be badly in need of solve major issue.
Along with Departments of Automation such as the development of INTELLIGENT BUILDING TECHNIQUE, the control of central air-conditioning computer, constant pressure water supply, intelligent lightings Uniting and provide comfortable work and living environment for building, also the control research for building electricity consumption equipment provides effective hand Section.Wherein the energy resource consumption of central air conditioner system occupies sizable proportion in whole building total energy consumption, how to make central hollow Adjust the purpose that can reach again energy-conservation while the function of performance own, increasingly paid close attention to by people.
Present stage, the analytical form to the energy-conservation main employing data of central air conditioner system, and in system operation Energy-conservation knowledge, experience cannot be described in detail by data, can only be presented in the mankind are appreciated that, machine cannot be managed Solve and computing, thus cannot be realized the Automated condtrol of central air conditioner system by computer, accordingly, it would be desirable to use one to know Knowledge, experience that system is run by knowledge method for expressing are expressed with the machine form of may be appreciated, and carry out energy-conservation to system Analyze, be finally reached energy-conservation purpose.
OWL is the Web ontology description language that W3C proposes, and is a Web standard, can be explained by computer, have very Strong semantic meaning representation ability, semantic information can be carried out between different types of operating system and the computer of applicational language using Exchange, is a kind of general data representation format.
Summary of the invention:
The purpose of the present invention is exactly for solving knowledge, the experience that system is run effectively to be applied in energy saving of system Problem, a kind of central air-conditioning energy-saving system based on body and method proposed, this system acquisition environmental information, equipment state are believed Breath, equipment energy consumption information etc. store in system database, on the basis of analysis and summary central air conditioner system, it is proposed that to set The central air-conditioning body that standby, environment, state, state value, energy consumption etc. are top layer concept, by arriving the information MAP in database This ontology model, forms a dynamic model with system operation data real-time change, utilizes knowledge, experience system that system runs Fixed energy-conservation rule, resolves ontology model according to rule, reasoning and analysis, draws energy saving optimizing strategy, it is judged that air-conditioning Run duty, the equipment carrying out start and stop air-conditioning system with this, be finally reached energy-conservation purpose.
For reaching above-mentioned purpose, the present invention adopts the following technical scheme that
A kind of central air-conditioning energy-saving system based on body, it is some central air-conditioning terminals that are provided with in including building Space cell, is provided with context detection module in it;
In building, it is additionally provided with Central air-conditioning unit installing space, except being provided with environment in air-conditioner set installing space simultaneously Outside detection module, being additionally provided with air-conditioning equipment control module, equipment energy consumption metering module, DDC controller and Surveillance center has pipe Reason computer;
Context detection module gathers environmental information, each space cell and the environment monitoring module of air-conditioner set installing space Communicated with DDC controller by bus;
Air-conditioning equipment control module gathers the state of Central air-conditioning unit, parameter and carries out Central air-conditioning unit accordingly Operation;
Equipment energy consumption metering module gathers the consumption information of Central air-conditioning unit;
DDC controller also communicates with air-conditioning equipment control module and energy consumption measure module, DDC controller and management meter Calculation machine communicates;
The various data gathered are managed by management computer with in real time/relational database form, pass through ontological construction Module sets up central air-conditioning body, and central air-conditioning body utilizes its interior database and Ontology Mapping module by the number in database According to being mapped in ontology model, by body parsing module, user's enquiry module, ontology inference module, body application module pair Central air-conditioning body carries out resolving, reasoning, analyze and apply, and provides energy saving optimizing strategy, and then realizes central air conditioner system Energy-conservation.
Described ontological construction module, according to the feature of Central air-conditioning unit, on the basis of analysis demand, extracts central hollow The top layer concept of adjusting system, specifies the layer of structure of central air conditioner system, determines the relation between concept and the concept of each layer, By Prot é g é software by concept, relation, show with OWL language;On the other hand, utilize Ontology Mapping by existing body Carry out semantic association with central air-conditioning body, reach the purpose that body expands;
Described database and Ontology Mapping module, be responsible for the real-time/historical data by Central air-conditioning unit runs and be mapped to In ontology model;In ontology model, the attribute of electrical equipment is corresponding to the state of relevant device, consumption information in database, by number It is expressed as the dynamic semantic relation with system change according to the static relation in storehouse;
Described body parsing module, is responsible for reading and resolving ontology file, the ontology file represented with OWL language is read In internal memory, according to concrete application purpose, ontology file is resolved;
Described user's enquiry module, is responsible for reading and resolving the querying command of user;
Described ontology inference module, is responsible for receiving the ontology file after resolving and querying command, and performs reasoning process;
Described body application module, the result being responsible for deriving reasoning module resolves, revises, to meet user Demand.
Described database and Ontology Mapping module, by the status information of Central air-conditioning unit by BACnet, TCP/IP or RS-485 communication network is delivered in real time/relational database, stores in corresponding tables of data;Example in central air-conditioning body Object is corresponding with the object of real system, and the attribute of these instance objects to carry out semanteme with the facility information in database and to reflect Penetrating, such central air conditioner system body is exactly a dynamic ontology run with system, thus the state of real-time representation system.
The reasoning process of described reasoning module is:
A) determine whether that user inputs, if there being input, reading the input information of user, it being resolved, obtains The main body of input information, object and relation;
B) subject and object in above-mentioned steps a) is carried out semantic tagger so that it is become concept in central air-conditioning body Example;
C) formulate the energy-conservation rule of central air conditioner system, be described by SWRL, example is combined group with attribute Become a unit, utilize logical relation to be combined by multiple unit, rule is extended and optimizes;
D) inference engine is utilized body to be retrieved and reasoning, by api function by central air-conditioning body, energy-conservation rule And the input of user introduces, and three is combined, jointly draws the energy consumption level of central air conditioner system, be given energy-conservation Optimisation strategy;
E) energy consumption level and the energy saving optimizing strategy to the central air conditioner system obtained, according to the reality of central air conditioner system Ruuning situation is modified, and forms a set of Energy Saving Control scheme, according to the operational factor of the timely update the system of scheme, in guarantee While centre air-conditioner set provides comfortable environment, reach to save the purpose of the energy.
A kind of power-economizing method of central air-conditioning energy-saving system based on body,
1) system initialization, gathers the temperature of space cell, humidity, CO2Concentration data, gathers the shape of Central air-conditioning unit State information, these information all upload to manage computer through DDC controller;The energy consumption letter of energy consumption measure module collecting device Breath, voltage, electric current, also pass to manage computer;
2) data in extract management Computer Database are mapped to the attribute of example corresponding to central air-conditioning body, make this Body Model is combined with the data of central air conditioner system actual motion, becomes the dynamic of a real time data change along with system State body;
3) in step 2) on the basis of, extraction equipment running, stop, consumption information under standby, malfunction, it is judged that Whether system exists standby energy consumption and fault energy consumption, if it does not exist, then go to step 2);Otherwise, then show that system exists standby Energy consumption and fault energy consumption, it is judged that if standby energy consumption, search and treat machine equipment and equipment is closed, if fault energy consumption, look into Look for faulty equipment, send alarm and close hull closure, then go to step 2), continue system is analyzed;
4) in step 2) on the basis of, the voltage of extraction equipment, electric current, power, consumption information, generate the operation letter of equipment Breath graph curve, it is judged that the load condition of equipment, if equipment operates in underload state, then closes redundant equipment, then turns Step 2);If equipment operates in overload state, then open stand-by equipment, then go to step 2);If equipment normal operation, Directly go to step 2);
5) in step 2) on the basis of, formulate central air-conditioning energy rule, consider season, temperature, humidity, time letter Breath, makes inferences according to energy-conservation rule body, is met the Energy Saving Strategy that comfort level requires, to corresponding water pump, blower fan Carry out start stop operation, then go to step 2), continue system is analyzed.
The present invention mainly utilizes following technology:
1. data acquisition and procession technology
Within the system, context detection module collecting temperature, humidity, CO2The environmental informations such as concentration, these information relative to Controller is a kind of analog input signal (AI), and the collection of information is by temperature sensor, humidity sensor, CO2Concentration passes Ambient parameter is converted into the analog quantity of standard by sensors etc., by A/D conversion, analog quantity is converted into digital quantity, is delivered to management Computer carries out showing, processing;Equipment control module gathers and controls the equipment state of Central air-conditioning unit, including water pump, wind Machine, valve etc., the status information of equipment is directly connected to the DI port of controller, and the DO that state control signal is by controller Port exports, and that removes driving relay change equipment opens/stop state;Energy consumption measure module uses intelligentized instrument, in collection The information such as the energy consumption of centre air-conditioner set equipment and the quality of power supply, communicate information to manage computer by ModBus agreement.
2. the communication technology
Native system have employed communication to carry out the transmission of data, context detection module, equipment control module with By the analog signal of shielded cable Transfer Standards between DDC controller;Energy consumption measure module has RS-485 interface, passes through ModBus agreement communicates with management computer, and management computer provides RS-232 interface, needs RS-by modular converter 485 interface conversion become RS-232 interface;It is attached by netting twine between DDC controller and management computer, uses BACNet Protocol communication;Communicated by ICP/IP protocol between management computer and client, in client and management computer Central air-conditioning body interacts.
3.Web technology
Utilize Visual Studio 2008 to carry out the exploitation of web application, set up the central air-conditioner monitoring of B/S framework System, the ruuning situation of real-time display system, the consumption information etc. of equipment;Set up user's query interface, user inquiring system Ruuning situation, display Energy Saving Strategy after ontology inference.
4. power-economizing method based on body
The Energy-saving of Central Air Conditioning based on body of this patent, is the environment temperature, wet utilizing various sensor to gather Degree, CO2The information such as concentration, the status informations such as the equipment of equipment control module collection opens/stop, standby, energy consumption measure module gathers Equipment energy consumption information, carry out the parsing of bulk process, reasoning and analysis, and then draw Optimization of Energy Saving strategy.
First to the temperature gathered, humidity, CO2The environmental informations such as concentration, the state parameter of central air conditioner system equipment, energy Consumption information, is filtered, sorts out, be saved in database;Set up central air-conditioning body, selection environment, equipment, state, state Five top layer concepts such as value, energy consumption, and each top layer concept is carried out more careful division, in enabling model to be fully described Centre air-conditioning system;By the attribute of example corresponding in the information MAP in database to ontology model, make ontology model and central authorities The data of air-conditioning system actual motion are combined;Central air-conditioning body is resolved, is indicated with OWL language;When with During the inquiry system information of family, the information such as query time that ontology model inputs according to user, device type, equipment energy consumption is carried out point Analysis, utilizes figure by the consumption information of corresponding device, the form of chart shows, user, according to graph curve, analyzes system Whether it is in overload or underload, goes to open/cut off the water the air-conditioning equipment such as pump, blower fan;Ontology model consider season, temperature, The environmental informations such as humidity, provide the operating scheme of system in time, adjust the operation number of units of the equipment such as water pump, blower fan and run merit Rate;The consumption information of the various electrical equipments in monitoring central air conditioner system, by letters such as the standby energy consumption of equipment, shutdown energy consumptions Breath searches the equipment of the waste energy, adjusts the state of equipment in time.It is finally reached the energy-conservation of central air conditioner system.
Central air conditioning system is that central air-conditioning energy provides condition, and its data message is energy-conservation basis, is counting Take practicable Energy Saving Strategy on the basis of according to, excavate the energy-saving potential of central air-conditioning, promote air conditioner energy saving level, in addition The experience of people is also a necessary condition of energy saving of system, by the knowledge in summary system operation, experience, and at this Summarize on the basis of a little knowledge, experiences, analyze, reasoning, draw more optimal Energy Saving Strategy, it is proposed to this end that a kind of Energy-saving processing method based on body.
In computer and information science field, body refers to that one is " formal, for the clear and definite of shared ideas system Detailed description again ".Those object types, concept and attribute thereof and the mutual pass between them among ontology describing specific area System, it is possible to show with one, formal mode to express semanteme, by the reasoning of body being carried out the discovery of knowledge.
The invention has the beneficial effects as follows: a kind of Energy-saving of Central Air Conditioning based on body, use the method for expressing of body, Descriptive system is carried out with concept universally recognized in field of central air-conditioning, relation, attribute, axiom etc., various in considering system Energy-conservation correlative factor, uses the mode of reasoning to obtain the energy saving optimizing strategy of system, and this is that knowledge engineering is led at central air-conditioning Once application in territory, overcomes the deficiency relying on single equipment and information thereof to carry out energy-saving analysis, in legacy data analysis On the basis of, this energy-saving processing method can supplement as one, fully excavates the energy-saving potential of central air conditioner system, saves energy Source.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of central air-conditioning energy-saving system.
Fig. 2 is the structure composition schematic diagram of this body running.
Fig. 3 is the ontology model of central air-conditioning.
Fig. 4 is the mapping of relation/real-time data base and central air-conditioning body.
Fig. 5 is that the OWL language of central air-conditioning body represents.
Fig. 6 is the flow process of semantic reasoning.
Fig. 7 is present invention power-economizing method based on body flow chart.
Fig. 8 is the Energy Saving Control example that the present invention one is actual.
Wherein, 1. room, 2. context detection module, 3. equipment control module, 4. equipment energy consumption metering module, 5.DDC is controlled Device processed, 6. management computer, 7. Ethernet, 8. client, 9.BACNet communicates, 10. shielded cable, and 11.RS-485 communicates.
Detailed description of the invention:
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of central air conditioner system.Context detection module 2 gathers environmental information;Equipment control module 3 The equipment state of Central air-conditioning unit is detected and controls;Energy consumption measure module 4 gathers equipment in central air conditioner system Consumption information, is transmitted by RS-485 communication interface;DDC controller 5 by shielded cable and equipment control module 3, set Standby energy consumption measure module 4 communicates, and the data coming equipment control module 3, equipment energy consumption metering module 4 transmission process It is delivered to manage computer 6 by BACNet agreement, and receives the order that management computer 6 issues, go Central air-conditioning unit Equipment operate;
Management computer 6 is communicated with DDC controller 5 by BACNet communication 9, receives data and shows and store In database, communicate with equipment energy consumption metering module 4 also by RS-485, receive consumption information;To in database Data make inferences analysis by the method for body, draw energy saving optimizing strategy;
Client 8 is communicated with management computer 6 by Ethernet, makes user interact with Central air-conditioning unit, Central air-conditioning monitoring system and the query display interface of B/S framework are provided.
Fig. 2 is the structure composition schematic diagram of this body running, introduces the composition structure of present invention method based on body, is provided with Following software function module.
Ontological construction module, is responsible for the structure of central air conditioner system ontology model.On the one hand, according to central air conditioner system Feature, on the basis of analysis demand, the top layer concept of extraction central air conditioner system, specifies the structure sheaf of central air conditioner system Secondary, determine the relation between concept and the concept of each layer, by Prot é g é software, the OWL language such as concept, relation is represented Out;On the other hand, utilize Ontology Mapping that existing body and central air-conditioning body are carried out semantic association, reach what body expanded Purpose.
In real time/relational database and Ontology Mapping module, be responsible for the storage of data and corresponding data be mapped to central hollow In adjusting system ontology model.The various physical equipment of central air conditioner system, sensor status information by BACnet, TCP/IP, The communication networks such as RS-485 are delivered in real time/relational database, store in corresponding tables of data;In central air conditioner system body Instance objects corresponding with the object of real system, the attribute of these instance objects to be carried out with the facility information in database Semantic mapping, such central air conditioner system body is exactly a dynamic ontology run with system, can be with real-time representation system State.
Body parsing module, is responsible for reading and resolving body.On the basis of ontological construction completes, need ontology model File operates, and Jena provides OntModel interface, can read in internal memory by ontology file, can use Iterator pair Body is iterated, and obtains all examples of body, it is also possible to resolve body according to concrete demand, obtains concrete Example.
User's enquiry module, is responsible for reading and resolving the querying command of user.For the querying command of user's input, first Carry out the semantic and parsing of syntactic level, make system know user's implication to be expressed, utilize SPARQL query language to this Body is inquired about.
Ontology inference module, is responsible for carrying out the reasoning of body according to user's query demand.Formulate energy-conservation inference rule, according to Body is made inferences by inquiry and the ontology model of user, obtains energy-conservation the reasoning results.Jena supports RBR, Api function is provided to be associated with ontology model by inference engine.
Body application module, is responsible for resolving the reasoning results, revising.The reasoning results is entered with machine understandable form Row represents, needs to resolve it, reasonably revises it on the basis of human experience, to reach the mesh of application 's.
Fig. 3 is the ontology model of central air-conditioning, describes implementing of ontological construction module in Fig. 2 described above, its Detailed step is as follows:
1) demand analysis of Central air-conditioning unit
Central air-conditioning unit is made up of cold and heat source system and the big major part of headend equipment two, comprises compressor, water pump, electricity Control equipment measured by magnet valve, temperature sensor etc., system will be carried out Energy Saving Control, need to consider comfort level, equipment energy Consumption, equipment running status, environment etc. are directly or correlative factor.
2) extraction of top layer concept
By the analysis that the demand analysis of Central air-conditioning unit and the structure of Central air-conditioning unit are formed, to central hollow Adjust unit to carry out abstract, obtain the concept of five top layers: environment, equipment, state, state value, energy consumption.
3) determination of the hierarchical relationship of concept term
Environment comprises natural environment and two main concepts of facility environment, and natural environment refers to relevant with human comfort Weather condition, mainly temperature, humidity, air quality etc.;Facility environment refers to the composition of Central air-conditioning unit, in being mainly Centre air conditioner cold-heat origin system (includes refrigeration machine, cooling tower, the chilled water circulatory system, cooling water recirculation system, heat supply network heat supply system System, boiler, heat exchanger etc.), air-conditioning system headend equipment (include Fresh air handling units, air-conditioner set, fan coil, variable air rate system System etc.).
Equipment refers to the set of the control used in Central air-conditioning unit, measurement equipment etc., including frequency converter, water pump, Sensor, magnetic valve etc..
State refers to the state set of the equipment in Central air-conditioning unit, including analog input (AI), analog output (AO), digital quantity input (DI), digital output (DO).
State value refers to the parameter information of the equipment in Central air-conditioning unit, two kinds of including continuous type and discrete type Parameter, discrete type parameter is primarily referred to as the variable of switchtype, including beat opening/closing, manual/auto, operation/fault/stopping, Start/standby/shutdown etc.;Continuous type parameter is primarily referred to as the variable of analog type, including the analog parameter of equipment, sensor etc. Value.
Energy consumption refers to the consumption information under the different conditions of the equipment in Central air-conditioning unit, including operation energy consumption, standby Energy consumption, shutdown energy consumption, fault energy consumption.
4) conceptual relation and the determination of attribute
Conceptual relation is mainly the relation between each concept hierarchy relation, environment, state, state value, energy consumption all with equipment Between there is relation.There is the relation of position between environment and equipment, the most same type of equipment needs to distinguish at central air-conditioning Locations of structures in unit, such as water pump not only may be located at cooling water recirculation system but also may be located at the chilled water circulatory system;Shape There is the relation of type between state and equipment, i.e. analog input is usually for sensor, mould is usually for frequency converter The output of analog quantity, control and detection for water pump state are digital output and digital quantity input;State value has with equipment Relation indirectly, has direct relation with state, for representing the value under different conditions;Value is there is between energy consumption and equipment Relation, the energy consumption of equipment ability corresponding with corresponding power consumption state correctly expresses the consumption information of equipment.
Concept attribute primarily to apparent expression concept makes concept more perfect, state value and two top layers of energy consumption Concept and all kinds of hierarchical relationship need the value of expression equipment, for this digital quantity of apparent expression, need have value and belong to Property, unit attribute, Value Types attribute etc..
5) expression of example
Example is setting in the structure according to concrete Central air-conditioning unit, equipment and central air-conditioning monitoring system database Standby parameter information carries out manual creation and information extraction, the equipment in Central air-conditioning unit and parameter information thereof is expressed, Become a part for body.
Fig. 4 is the mapping of database and central air-conditioning body, describes in real time/relational database and body in above-mentioned Fig. 2 Implementing of mapping block.Device instance in central air-conditioning body carries out corresponding with the relevant device in database, by number In in storehouse, the parameter information of equipment adds the attribute of instances of ontology to.The flow process of its correspondence is:
(1) example and the corresponding lists of equipment in database are created
Build a corresponding lists and central air-conditioning instances of ontology is carried out corresponding with the device numbering in database, it is achieved number According to the mapping in storehouse Yu central air-conditioning body, central air-conditioning body and database is made to connect.
(2) by SPARQL language inquiry body
On the basis of above-mentioned (1), utilize Jena nesting SPARQL statement that body is inquired about, the pass of query concept class System and attribute thereof, make the composition of machine clear and definite central air-conditioning body.
(3) by facility information in sql like language inquiry database
SQL is data base query language, and query statement is nested in high-level language Java, and reason easily operated by Java The characteristic solved, passes through SELECT ... FROM ... WHERE ... statement can inquire the parameter information of equipment.
(4) by list, database information is inserted in body
In above-mentioned steps (3) by the corresponding parameter information of the device instance in central air-conditioning body from database Take out, according to the example in step (1) and the corresponding lists of equipment in database, the parameter information of equipment is inserted into body In, it is achieved the device parameter information in database and the mapping of central air-conditioning body.
Fig. 5 is that the OWL language of central air-conditioning body represents, central air-conditioning body in above-mentioned Fig. 3 is carried out OWL language table Show.OWL be W3C exploitation a kind of network ontology language for body is carried out semantic description, by concept, attribute, example Description, explicitly indicate that meaning and the relation thereof of term, be presented in details in conceptual model.
Showing a part for central air-conditioning body on the left of Fig. 5, use OWL language to be indicated, right side is central air-conditioning The graphics relationship of body represents.The label in left side<owl:Class rdf:ID=" water pump ">With</owl:Class>Represent one " water pump " class, passes through<rdfs:subClassOf></rdfs:subClassOf>Water pump is limited to the one of " equipment " class by label Individual subclass, with the corresponding relation of right figure as shown in Figure 5; Label<water pump rdf:about=" #1_ cooling water pump "></water pump>Represent the example " 1_ cooling water pump " of " water pump " class, under it, there are some attribute tags, are used for representing that " 1_ cools down Water pump " state, position, consumption information etc., these attribute tags the most each have attribute, and<hasValue>Is<operation energy consumption>Value attribute label under label, for representing the power consumption values of equipment.
Fig. 6 is the flow process of semantic reasoning, and central authorities' air conditioner main body is carried out semantic reasoning.Inference step is as follows:
A) determine whether that user inputs, if there being input, reading the input information of user, it being resolved, obtains The main body of input information, object and relation.
B) subject and object in above-mentioned steps a) is carried out semantic tagger so that it is become concept in central air-conditioning body Example.
C) formulate the energy-conservation rule of central air conditioner system, be described by SWRL, example is combined group with attribute Become a unit, utilize logical relation to be combined by multiple unit, rule is extended and optimizes.
D) inference engine is utilized body to be retrieved and reasoning, by api function by central air-conditioning body, energy-conservation rule And the input of user introduces, and three is combined, jointly draws the energy consumption level of central air conditioner system, be given energy-conservation Optimisation strategy.
E) energy consumption level and the energy saving optimizing strategy to the central air conditioner system obtained, according to the reality of central air conditioner system Ruuning situation is modified, and forms a set of significant Energy Saving Control scheme, according to the operational factor of the timely update the system of scheme, While ensureing that central air conditioner system provides comfortable environment, reach to save the purpose of the energy.
Fig. 7 is present invention power-economizing method based on body flow chart, concretely comprising the following steps of it:
1) system initialization, context detection module gathers the temperature of space cell, humidity, CO2The data such as concentration, equipment is surveyed The status information of control module collecting device, these information all upload to manage computer through DDC controller;Energy consumption measure module The consumption information of collecting device, voltage, electric current etc., be delivered to manage computer by RS-485;
2) extract the data in database and be mapped to the attribute of example corresponding to central air-conditioning body, make ontology model with in The data of centre air-conditioning system actual motion are combined, and become the dynamic ontology that a real time data along with system changes;
3) in step 2) on the basis of, extraction equipment running, stop, consumption information under standby, malfunction, it is judged that Whether system exists standby energy consumption and fault energy consumption, if it does not exist, then go to step 2);Otherwise, then show that system exists standby Energy consumption and fault energy consumption, it is judged that if standby energy consumption, search and treat machine equipment and equipment is closed, if fault energy consumption, look into Look for faulty equipment, send alarm and close hull closure, then go to step 2), continue system is analyzed;
4) in step 2) on the basis of, the voltage of extraction equipment, electric current, power, consumption information, generate the operation letter of equipment Breath graph curve, it is judged that the load condition of equipment, if equipment operates in underload state, then closes redundant equipment, then turns Step 2);If equipment operates in overload state, then open stand-by equipment, then go to step 2);If equipment normal operation, Directly go to step 2);
5) in step 2) on the basis of, formulate central air-conditioning energy rule, consider season, temperature, humidity, time etc. Information, makes inferences according to energy-conservation rule body, is met the Energy Saving Strategy that comfort level requires, to corresponding water pump, wind Machine carries out start stop operation, then goes to step 2), continue system is analyzed.
Fig. 8 is the Energy Saving Control example that the present invention one is actual, is implemented as follows:
Formulate the energy-conservation rule of central air conditioner system according to operating experience, rule made inferences, as a example by 1.:
Equipment (?x)∧hasState(?x,?s)∧hasStateType(?s,?a)→hasConsumption(?x,?m)
Wherein, equipment (?X) represent that variable x is a class (such as: 1_ cooling water pump) of equipment, hasState (?x,?s) The running status of expression equipment x, hasStateType (?s,?A) Status Type of equipment is represented, by these three condition, permissible Judge whether equipment operation now has energy-conservation potentiality, such as: at unknown 1_ cooling water pump owing to system meets load, place On the premise of low frequency holding state, 1_ can be drawn by the consumption information of 1. this energy-conservation rule judgment 1_ cooling water pump Cooling water pump can carry out energy-conservation, finally is controlled to close 1_ cooling water pump by management computer, reaches energy saving of system with this Purpose.

Claims (6)

1. a central air-conditioning energy-saving system based on body, is characterized in that, it is some in including building is provided with central hollow Adjust the space cell of terminal, in it, be provided with context detection module;
In building, it is additionally provided with Central air-conditioning unit installing space, except being provided with environment measuring in air-conditioner set installing space simultaneously Outside module, being additionally provided with air-conditioning equipment control module, equipment energy consumption metering module, DDC controller and Surveillance center has management meter Calculation machine;
Context detection module gathers environmental information, and the environment monitoring module of each space cell and air-conditioner set installing space is passed through Bus communicates with DDC controller;
Air-conditioning equipment control module gathers the state of Central air-conditioning unit, parameter and grasps Central air-conditioning unit accordingly Make;
Equipment energy consumption metering module gathers the consumption information of Central air-conditioning unit;
DDC controller also communicates with air-conditioning equipment control module and energy consumption measure module, DDC controller and management computer Communicate;
The various data gathered are managed, by ontological construction module by management computer with in real time/relational database form Setting up central air-conditioning body, central air-conditioning body utilizes its interior database the data in database to be reflected with Ontology Mapping module It is mapped in ontology model, by body parsing module, user's enquiry module, ontology inference module, body application module to central authorities Air conditioner main body carries out resolving, reasoning, analyze and apply, and provides energy saving optimizing strategy, and then realizes the energy-conservation of central air conditioner system;
Described ontological construction module, according to the feature of Central air-conditioning unit, on the basis of analysis demand, extracts central air-conditioning system The top layer concept of system, specifies the layer of structure of central air conditioner system, determines the relation between concept and the concept of each layer, pass through Prot é g é software, by concept, relation, shows with OWL language;On the other hand, utilize Ontology Mapping by existing body with in Centre air conditioner main body carries out semantic association, reaches the purpose that body expands;
Described database and Ontology Mapping module, be responsible for the real-time/historical data by Central air-conditioning unit runs and be mapped to body In model;In ontology model, the attribute of electrical equipment is corresponding to the state of relevant device, consumption information in database, by database In static relation be expressed as the dynamic semantic relation with system change;
Described body parsing module, is responsible for reading and resolving ontology file, in the ontology file represented with OWL language being read In depositing, according to concrete application purpose, ontology file is resolved;
Described user's enquiry module, is responsible for reading and resolving the querying command of user;
Described ontology inference module, is responsible for receiving the ontology file after resolving and querying command, and performs reasoning process;
Described body application module, the result being responsible for deriving reasoning module resolves, revises, to meet user's need Ask;
The reasoning process of described reasoning module is:
A) determine whether that user inputs, if there being input, reading the input information of user, it being resolved, is inputted The main body of information, object and relation;
B) subject and object in above-mentioned steps a) is carried out semantic tagger so that it is become the reality of concept in central air-conditioning body Example;
C) formulate the energy-conservation rule of central air conditioner system, be described by SWRL, example is combined with attribute composition one Individual unit, utilizes logical relation to be combined by multiple unit, is extended rule and optimizes;
D) utilize inference engine body to be retrieved and reasoning, by api function by central air-conditioning body, energy-conservation rule and The input of user introduces, and three is combined, and jointly draws the energy consumption level of central air conditioner system, provides energy saving optimizing Strategy;
E) energy consumption level and the energy saving optimizing strategy to the central air conditioner system obtained, according to the actual motion of central air conditioner system Situation is modified, and forms a set of Energy Saving Control scheme, according to the operational factor of the timely update the system of scheme, is ensureing central hollow While adjusting unit to provide comfortable environment, reach to save the purpose of the energy.
2. central air-conditioning energy-saving system based on body as claimed in claim 1, is characterized in that, described database reflects with body Penetrate module, the status information of Central air-conditioning unit is delivered in real time by BACnet, TCP/IP or RS-485 communication network/is closed It is database, stores in corresponding tables of data;Instance objects in central air-conditioning body is corresponding with the object of real system, The attribute of these instance objects to carry out Semantic mapping with the facility information in database, and such central air conditioner system body is exactly One dynamic ontology run with system, thus the state of real-time representation system.
3. a power-economizing method for the as above arbitrary described central air-conditioning energy-saving system based on body of claim 1-2, it is special Levy and be:
1) system initialization, gathers the temperature of space cell, humidity, CO2Concentration data, gathers the state letter of Central air-conditioning unit Breath, these information all upload to manage computer through DDC controller;The consumption information of energy consumption measure module collecting device, electricity Pressure, electric current, also pass to manage computer;
2) data in extract management Computer Database are mapped to the attribute of example corresponding to central air-conditioning body, make body mould Type is combined with the data of central air conditioner system actual motion, becomes the dynamic basis that a real time data along with system changes Body;
3) in step 2) on the basis of, extraction equipment running, stop, consumption information under standby, malfunction, it is judged that system Whether there is standby energy consumption and fault energy consumption, if it does not exist, then go to step 2);Otherwise, then show that system exists standby energy consumption With fault energy consumption, it is judged that if standby energy consumption, search and treat machine equipment and equipment is closed, if fault energy consumption, search event Barrier equipment, sends alarm and closes hull closure, then goes to step 2), continue system is analyzed;
4) in step 2) on the basis of, the voltage of extraction equipment, electric current, power, consumption information, generate the operation information figure of equipment Shape curve, it is judged that the load condition of equipment, if equipment operates in underload state, then closes redundant equipment, then goes to step 2);If equipment operates in overload state, then open stand-by equipment, then go to step 2);If equipment normal operation, directly Go to step 2);
5) in step 2) on the basis of, formulate central air-conditioning energy rule, consider season, temperature, humidity, temporal information, Body is made inferences according to energy-conservation rule, is met the Energy Saving Strategy that comfort level requires, corresponding water pump, blower fan are carried out Start stop operation, then goes to step 2), continue system is analyzed.
4. the power-economizing method of central air-conditioning energy-saving system based on body as claimed in claim 3, it is characterised in that: described Body builds implementing of module, and its detailed step is as follows:
1) demand analysis of Central air-conditioning unit
With human comfort, equipment energy consumption, equipment running status, environment as demand factor;
2) extraction of top layer concept
Central air-conditioning unit is made up of cold and heat source system and the big major part of headend equipment two, comprises compressor, water pump, electromagnetism Valve, temperature sensor class measure control equipment;By to the demand analysis of Central air-conditioning unit and the knot of Central air-conditioning unit The analysis of structure composition, carries out abstract to Central air-conditioning unit, obtains the concept of five top layers: environment, equipment, state, state value, Energy consumption;
3) determination of the hierarchical relationship of concept term
Environment comprises natural environment and two main concepts of facility environment, and natural environment refers to the sky relevant with human comfort Gas situation, including temperature, humidity, air quality;Facility environment refers to the composition of Central air-conditioning unit, cold and hot including central air-conditioning Origin system, air-conditioning system headend equipment;
Equipment refer to the control used in Central air-conditioning unit, measure equipment set, including frequency converter, water pump, sensor, Magnetic valve;
State refers to the state set of the equipment in Central air-conditioning unit, including analog input AI, analog output AO, numeral Amount input DI, digital output DO;
State value refers to the parameter information of the equipment in Central air-conditioning unit, including the two kinds of ginseng of continuous type and discrete type Number, discrete type parameter is primarily referred to as the variable of switchtype, including beating opening/closing, manual/auto, operation/fault/stop, opening Machine/standby/shutdown;Continuous type parameter is primarily referred to as the variable of analog type, including equipment, the analog parameter value of sensor;
Energy consumption refers to the consumption information under the different conditions of the equipment in Central air-conditioning unit, including operation energy consumption, standby energy consumption, Shutdown energy consumption, fault energy consumption;
4) conceptual relation and the determination of attribute
Conceptual relation is mainly the relation between each concept hierarchy relation, and environment, state, state value, energy consumption are all and between equipment The relation existed;
Concept attribute is the value attribute of digital quantity, unit attribute, Value Types attribute;
5) expression of example
Example is the equipment ginseng in the structure according to concrete Central air-conditioning unit, equipment and central air-conditioning monitoring system database Number information carries out manual creation and information extraction, the equipment in Central air-conditioning unit and parameter information thereof is expressed, becomes A part for body.
5. the power-economizing method of central air-conditioning energy-saving system based on body as claimed in claim 3, it is characterised in that: described number According to being mapped as of storehouse and central air-conditioning body:
(1) example and the corresponding lists of equipment in database are created
Build a corresponding lists and central air-conditioning instances of ontology is carried out corresponding with the device numbering in database, it is achieved database With the mapping of central air-conditioning body, central air-conditioning body and database is made to connect;
(2) by SPARQL language inquiry body
On the basis of above-mentioned (1), utilize Jena nesting SPARQL statement that body is inquired about, the relation of query concept class and Its attribute, makes the composition of machine clear and definite central air-conditioning body;
(3) by facility information in sql like language inquiry database
SQL is data base query language, and query statement is nested in high-level language Java, passes through SELECT ... FROM ... WHERE ... statement inquires the parameter information of equipment;
(4) by list, database information is inserted in body
The corresponding parameter information of the device instance in central air-conditioning body is taken from database by above-mentioned steps (3) Go out, according to the example in step (1) and the corresponding lists of equipment in database, the parameter information of equipment be inserted in body, Realize the mapping of the device parameter information in database and central air-conditioning body.
6. the power-economizing method of central air-conditioning energy-saving system based on body as claimed in claim 3, it is characterised in that push away described in: The reasoning process of reason module is as follows:
A) determine whether that user inputs, if there being input, reading the input information of user, it being resolved, is inputted The main body of information, object and relation;
B) subject and object in above-mentioned steps a) is carried out semantic tagger so that it is become the reality of concept in central air-conditioning body Example;
C) formulate the energy-conservation rule of central air conditioner system, be described by SWRL, example is combined with attribute composition one Individual unit, utilizes logical relation to be combined by multiple unit, is extended rule and optimizes;
D) utilize inference engine body to be retrieved and reasoning, by api function by central air-conditioning body, energy-conservation rule and The input of user introduces, and three is combined, and jointly draws the energy consumption level of central air conditioner system, provides energy saving optimizing Strategy;
E) energy consumption level and the energy saving optimizing strategy to the central air conditioner system obtained, according to the actual motion of central air conditioner system Situation is modified, and forms a set of Energy Saving Control scheme, according to the operational factor of the timely update the system of scheme, is ensureing central hollow While adjusting system provides comfortable environment, reach to save the purpose of the energy.
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