CN107606739A - The fault detection method of heating ventilation air-conditioning system - Google Patents
The fault detection method of heating ventilation air-conditioning system Download PDFInfo
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Abstract
The present invention proposes a kind of fault detection method of heating ventilation air-conditioning system, and this method comprises the following steps：S101：The key link that the transmission of analysis heating ventilation air-conditioning system energy and conversion process are related to；S102：Establish building HVAC energy networks model；S103：According to the basic physical law of the conservation of energy, the sensing data incidence relation of across air-treatment link, water process link and distribution link is established；S104：Utilize redundancy of overall importance, equipment and sensor fault are detected, including non-conterminous equipment fault detection, non-conterminous Transducer fault detection, neighbouring device fault detect, adjacent sensors fault detect, the equipment being directly connected to and Transducer fault detection.The present invention can improve the accuracy and applicability of heating ventilation air-conditioning system fault detect, and the reliability of detection is effectively ensured, and model simply, calculate simplicity, be easy to Project Realization.
Description
Technical field
The present invention relates to heating ventilation air-conditioning system monitoring and fault diagnosis technology field, more particularly to a kind of heating ventilation air-conditioning system
Fault detection method.
Background technology
With the development of intelligent building, the automation of HVAC and the level of informatization improve constantly, the complexity of system
It is consequently increased, this safety and economic operation to air-conditioning system proposes higher requirement.Therefore, heating ventilation air-conditioning system failure is examined
Survey and the needs of diagnosis are increasingly apparent, its meaning is mainly manifested in：1) effective fault detection and diagnosis is advantageous to save the energy
Consumption, reduce operating cost.From the point of view of actual motion, annual energy consume caused by the HVAC system failure can be up to 50%.
For energy consumption caused by the complete failure of sensor also up to 48%, sensor can also increase by 5% or so energy even if 10% deviation
Consumption.As can be seen here, carry out the fault detection and diagnosis of air-conditioning system, the failure in timely removal system, ensure the optimal of equipment
Operation, there is very big energy-saving potential；2) be advantageous to extension device service life, improve the availability of system.By carrying out event
Barrier diagnosis, is advantageous to the failure of each sensor and equipment in timely removal system, avoids equipment from nonserviceabling lower fortune for a long time
OK, this service life for being advantageous to extension device, the availability of system is improved.
From the point of view of the source of trouble, heating ventilation air-conditioning system failure is probably equipment fault, it is also possible to sensor fault.From air-conditioning
From the point of view of system itself the Nomenclature Composition and Structure of Complexes, various kinds of equipment is connected with sensor by airduct, the network of rivers, heat supply network, interrelated coupling, therefore
Barrier is easily propagated, and causes systematic failure.In addition, it is contemplated that building system is made up of some subsystems that are mutually related, such as
The subsystems such as water supply, heat supply, distribution, the failure of air-conditioning system may also be drawn by the failure of associated subsystem or link
Rise, failure is interweaved inside and outside system, and which increase the complexity of heating ventilation air-conditioning system fault diagnosis.
The content of the invention
It is contemplated that at least solves one of above-mentioned technical problem.
Therefore, it is an object of the invention to propose a kind of fault detection method of heating ventilation air-conditioning system, this method can carry
The accuracy and applicability of high heating ventilation air-conditioning system fault detect, the reliability of detection is effectively ensured, and models simple, calculating letter
Just, it is easy to Project Realization.
To achieve these goals, embodiments of the invention propose a kind of fault detection method of heating ventilation air-conditioning system,
Comprise the following steps：S101：The key link that the transmission of analysis heating ventilation air-conditioning system energy and conversion process are related to；S102：Establish
Build HVAC energy networks model；S103：According to the basic physical law of the conservation of energy, establish across air-treatment link,
The sensing data incidence relation of water process link and distribution link；S104：Using redundancy of overall importance, to equipment and
Sensor fault is detected, including non-conterminous equipment fault detection, the inspection of non-conterminous Transducer fault detection, neighbouring device failure
Survey, adjacent sensors fault detect, the equipment being directly connected to and Transducer fault detection.
In addition, the fault detection method of heating ventilation air-conditioning system according to the above embodiment of the present invention can also be with following attached
The technical characteristic added：
In some instances, establish build HVAC energy networks model when, by HVAC physical network by
The region equivalent that sensor surrounds is a node in energy networks, is equivalent to connect two sections in energy networks by sensor
The side of point.
In some instances, the S103, further comprises：By heat energy, electric energy, mechanical energy conversion, transmission and
Law of conservation of energy, it is established that the incidence relation of the cross-system sensor related to energy meter.
In some instances,, will if there is side for arbitrary two nodes in energy networks in the S104
Two nodes are joined directly together, then judge the two node adjacencys, otherwise judge that the two nodes do not abut.
In some instances, in the S104, if two sides corresponding to sensor and same section in energy networks
Point connection, then judge that the two sensors are adjacent, otherwise judge that the two sensors are non-conterminous.
In some instances, in the S104, the detection foundation of the non-conterminous Transducer fault detection is：If energy
There is energy imbalance simultaneously in two neighboring node in amount network, but if considering two nodes overall input and output simultaneously
When its energy balance, then judge that the sensor between two nodes has failure.
In some instances, in the S104, the detection foundation of the non-conterminous equipment fault detection is：For energy
Arbitrary node in network, if input and output energy is uneven, and adjacent all node energies balance, then judge that the node is deposited
In failure.
In some instances, in the S104, the detection of the equipment being directly connected to and Transducer fault detection according to
According to being：When equipment and sensor corresponding to node and the side being joined directly together while break down, then according to energy balance relations, therefore
Barrier scope is the region of the side composition of two nodes of node and connection.
In some instances, in the S104, the detection foundation of the neighbouring device simultaneous faults detection is：For energy
Any two adjacent node in amount network breaks down simultaneously, then fault coverage is by two side groups between node and node
Into region.
In some instances, in the S104, the detection foundation of the adjacent sensors simultaneous faults detection is：For
Any two adjacent sensors in energy networks break down simultaneously, then the node being directly connected to sensor will appear from energy
Imbalance, fault coverage are the sensors between uneven node.
The fault detection method of heating ventilation air-conditioning system according to embodiments of the present invention, it is possible to increase heating ventilation air-conditioning system failure
The accuracy and applicability of detection, the reliability of detection is effectively ensured, and models simply, calculate simplicity, be easy to Project Realization.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the flow chart of the fault detection method of heating ventilation air-conditioning system according to an embodiment of the invention；
Physical network signal in the fault detection method of Fig. 2 heating ventilation air-conditioning systems according to an embodiment of the invention
Figure；
Fig. 3 is the energy networks schematic diagram in the fault detection method of the heating ventilation air-conditioning system of one embodiment of the invention；
Fig. 4 be the heating ventilation air-conditioning system of one embodiment of the invention fault detection method in sensor and non-conterminous equipment
The schematic diagram of simultaneous faults；
Fig. 5 be the heating ventilation air-conditioning system of one embodiment of the invention fault detection method in sensor and neighbouring device it is same
When failure schematic diagram；
Fig. 6 be the heating ventilation air-conditioning system of one embodiment of the invention fault detection method in neighbouring device and meanwhile occur therefore
The schematic diagram of barrier；
Fig. 7 is that adjacent sensors while occur in the fault detection method of the heating ventilation air-conditioning system of one embodiment of the invention
The schematic diagram of failure.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than instruction or dark
Show that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, thus it is it is not intended that right
The limitation of the present invention.In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint are relative
Importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
The fault detection method of heating ventilation air-conditioning system according to embodiments of the present invention is described below in conjunction with accompanying drawing.
Firstly, it is necessary to explanation, the present invention is that inventor is proposed based on the understanding to problems with and discovery：Energy
Amount is being transmitted through heating ventilation air-conditioning system key link, energy and is remaining the conservation of energy in conversion process, and this is interdepartmental
The measurement data confluence analysis of system provides theoretical foundation.Fault diagnosis is carried out according to energy balance, its main thought is basis
Energy transmission, assigning process and the metrical information of physical process establish energy-balance equation, if energy balance requirement can not be met,
Then show that system has failure.In other words, energy is measuring for motion of matter conversion, although multi-motion form be present in material,
Various forms of energy are corresponded respectively to, but they can be changed mutually by certain mode.Based on this, reality of the invention
Apply example and analyze the transmission of heating ventilation air-conditioning system energy and conversion process first, established according to HVAC structure across empty gas and water, electric power
Etc. the energy networks of system, the equipment fault based on energy balance and the basis for estimation of sensor fault are provided on this basis.
Specifically, Fig. 1 is the flow chart of the fault detection method of heating ventilation air-conditioning system according to an embodiment of the invention.
As shown in figure 1, this method comprises the following steps：
Step S101：The key link that the transmission of analysis heating ventilation air-conditioning system energy and conversion process are related to.
Specifically, in step S101, energy transmission and conversion process, further comprise but be not limited to as shown in table 1
Energy conversion process, and energy transmission link including but not limited to as shown in table 2.
Table 1
Table 2
Step S102：Establish building HVAC energy networks model.
Specifically, it is when establishing building HVAC energy networks model, HVAC is empty in one embodiment of invention
It is a node in energy networks to adjust the region equivalent surrounded in physical network by sensor, and sensor is equivalent to connect energy
Measure the side of two nodes in network.In other words, i.e., it is by the region equivalent that the sensor by energy meter of air-conditioning system is split
The node of one network, energy meter sensor is equivalent to connect the side of two nodes in network, and the weights on side are node
Between the energy that transmits, and then obtain the energy networks of the air-conditioning system.Further, in energy networks, node failure
Energy input or the output of improper form are will appear as, this portion of energy can not be detected by existing sensor in network.
Step S103：According to the basic physical law of the conservation of energy, establish across air-treatment link, water process link and
The sensing data incidence relation of distribution link.
Specifically, step S103 further comprises：Pass through heat energy, electric energy, the conversion of mechanical energy, transmission and the conservation of energy
Law, it is established that the incidence relation of the cross-system sensor related to energy meter.
Step S104：Using redundancy of overall importance, equipment and sensor fault are detected, including non-conterminous set
Standby fault detect, non-conterminous Transducer fault detection, neighbouring device fault detect, adjacent sensors fault detect, it is directly connected to
Equipment and Transducer fault detection.
Specifically, in one embodiment of the invention, in step S104, for arbitrary two in energy networks
Node, two nodes are joined directly together if there is side, then judges the two node adjacencys, otherwise judges that the two nodes are not adjacent
Connect.
In one embodiment of the invention, in step S104, if two sides corresponding to sensor in energy networks
It is connected with same node, then judges that the two sensors are adjacent, otherwise judges that the two sensors are non-conterminous.
In one embodiment of the invention, in step S104, the detection foundation of non-conterminous Transducer fault detection is：
If energy imbalance occurs in two neighboring node in energy networks simultaneously, but if considering the overall input of two nodes simultaneously
With its energy balance during output, then judge that the sensor between two nodes has failure.
In one embodiment of the invention, in step S104, the detection foundation of non-conterminous equipment fault detection is：It is right
The arbitrary node in energy networks, if input and output energy is uneven, and adjacent all node energies balance, then judging should
Failure be present in node.
In one embodiment of the invention, in step S104, the equipment that is directly connected to and Transducer fault detection
Detecting foundation is：When equipment and sensor corresponding to node and the side being joined directly together while break down, then according to energy balance
Relation, fault coverage are the regions of the side composition of two nodes of node and connection.
In one embodiment of the invention, in step S104, the detection foundation of neighbouring device simultaneous faults detection is：
Broken down simultaneously for any two adjacent node in energy networks, then fault coverage is by two between node and node
Side composition region.
In one embodiment of the invention, in step S104, the detection foundation of adjacent sensors simultaneous faults detection
It is：Broken down simultaneously for any two adjacent sensors in energy networks, then the node being directly connected to sensor will
It is uneven to there is energy, fault coverage is the sensor between uneven node.
The fault detection method of heating ventilation air-conditioning system according to embodiments of the present invention, it is possible to increase heating ventilation air-conditioning system failure
The accuracy and applicability of detection, the reliability of detection is effectively ensured, and models simply, calculate simplicity, be easy to Project Realization.
As specific example, such as shown in Fig. 2, S1, S2, S3 are three sensors, and 1,2,3,4 be by this three sensings
4 physical regions of device isolation, its corresponding energy networks are as shown in Figure 3.
In Fig. 4, the energy of energy networks interior joint 2 is uneven, but node 1,3 energy balance, is implemented according to the present invention
The fault detection method of the air-conditioning system of example, can determine whether that node 2 has failure.Then node 3,4 energy occur uneven, but consider
Node 3,4 common input and output, S2 and S4 are balances, can obtain sensor S3 failures.
In Fig. 4, if equipment that node 2 includes and the sensor S3 simultaneous faults not being joined directly together, remaining node and biography
Sensor is normal.Due to S3 failures, then node 3,4 energy occur uneven, but consider node 3,4 common input and output, S2
It is balance with S4, according to fault detection method during the non-conterminous sensor fault of above-mentioned heating ventilation air-conditioning system, can obtain
Sensor S3 failures.
In Fig. 4, the internal unit failure of node 2, its energy must be uneven, but the energy balance of node 1, node 3,4 structures
Into integral energy be also balance, according to fault detect side during the non-conterminous equipment fault of above-mentioned heating ventilation air-conditioning system
Method, it is known that the failure of node 2.
In fig. 5, it is assumed that the sensor S2 corresponding with being joined directly together side of node 2 while break down, remaining node and biography
Sensor is normal, then energy imbalance, and node 1,4 energy balance, according to above-mentioned heating ventilation air-conditioning system can all occur in node 2,3
The equipment being directly connected to and fault detection method during sensor fault, it is known that it is whole corresponding to node 2,3 and sensor S2
There is failure in region, but can not exclude node 3.Therefore, certain area can only be navigated to for such situation, fault detect.
In figure 6, if node 2,3 breaks down simultaneously, equipment and sensor are normal corresponding to remaining node and side, according to
Fault detection method during the neighbouring device simultaneous faults of above-mentioned heating ventilation air-conditioning system, fault coverage are by node 2,3 and S2
The region of composition, although S2 fault-frees, it can not exclude.
In the figure 7, if S2, S3 break down simultaneously, although there are energy imbalance, 2,3,4 sections in node 2,3,4 simultaneously
The whole region that point is formed is energy balance, thus be excluded that the possibility of the failure of node 2,3,4, according to above-mentioned HVAC system
Fault detection method during the adjacent sensors simultaneous faults of system, can only be S2, S3 failure.
It should be noted that in an embodiment of the present invention, do not consider same in the connected multiple sensors of same node
When break down and deviation is cancelled out each other the situation of lucky node energy balance.
To sum up, the fault detection method of heating ventilation air-conditioning system according to embodiments of the present invention, it is possible to increase HVAC system
The accuracy and applicability of system fault detect, are effectively ensured the reliability of detection, and model simply, calculate simplicity, are easy to engineering
Realize.
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 the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be any
One or more embodiments or example in combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is by claim and its equivalent limits.
Claims (10)
1. a kind of fault detection method of heating ventilation air-conditioning system, it is characterised in that comprise the following steps：
S101：The key link that the transmission of analysis heating ventilation air-conditioning system energy and conversion process are related to；
S102：Establish building HVAC energy networks model；
S103：According to the basic physical law of the conservation of energy, across air-treatment link, water process link and distribution link are established
Sensing data incidence relation；
S104：Using redundancy of overall importance, equipment and sensor fault are detected, including non-conterminous equipment fault inspection
Survey, non-conterminous Transducer fault detection, neighbouring device fault detect, adjacent sensors fault detect, the equipment being directly connected to and
Transducer fault detection.
2. the fault detection method of heating ventilation air-conditioning system according to claim 1, it is characterised in that build HVAC establishing
It is one in energy networks by the region equivalent surrounded in HVAC physical network by sensor during air conditioner energy network model
Individual node, sensor is equivalent to connect to the side of two nodes in energy networks.
3. the fault detection method of heating ventilation air-conditioning system according to claim 1, it is characterised in that the S103, enter one
Step includes：
Pass through heat energy, electric energy, the conversion of mechanical energy, transmission and law of conservation of energy, it is established that it is related to energy meter across
The incidence relation of system sensor.
4. the fault detection method of heating ventilation air-conditioning system according to claim 1, it is characterised in that in the S104,
For arbitrary two nodes in energy networks, two nodes are joined directly together if there is side, then judge the two nodes
It is adjacent, otherwise judge that the two nodes do not abut.
5. the fault detection method of heating ventilation air-conditioning system according to claim 1, it is characterised in that in the S104,
If two sides are connected with same node corresponding to sensor in energy networks, judge that the two sensors are adjacent, otherwise
Judge that the two sensors are non-conterminous.
6. the fault detection method of heating ventilation air-conditioning system according to claim 1, it is characterised in that in the S104,
The detection of the non-conterminous Transducer fault detection is according to being：If there is energy not simultaneously in two neighboring node in energy networks
Balance, but if considering its energy balance during the overall input and output of two nodes simultaneously, then judge between two nodes
Failure be present in sensor.
7. the fault detection method of heating ventilation air-conditioning system according to claim 1, it is characterised in that in the S104,
The detection of the non-conterminous equipment fault detection is according to being：For arbitrary node in energy networks, if input and output energy is not
Balance, and adjacent all node energies balance, then judge that the node has failure.
8. the fault detection method of heating ventilation air-conditioning system according to claim 1, it is characterised in that in the S104,
The detection of the equipment being directly connected to and Transducer fault detection is according to being：When equipment corresponding to node and the side being joined directly together
Broken down simultaneously with sensor, then according to energy balance relations, fault coverage is the side composition of two nodes of node and connection
Region.
9. the fault detection method of heating ventilation air-conditioning system according to claim 1, it is characterised in that in the S104,
The detection of neighbouring device simultaneous faults detection is according to being：Occur simultaneously for any two adjacent node in energy networks
Failure, the then region that fault coverage is made up of two sides between node and node.
10. the fault detection method of heating ventilation air-conditioning system according to claim 1, it is characterised in that in the S104,
The detection of adjacent sensors simultaneous faults detection is according to being：For any two adjacent sensors in energy networks simultaneously
Break down, then the node being directly connected to sensor will appear from energy imbalance, and fault coverage is between uneven node
Sensor.
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Cited By (1)
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| CN110132356A (en) * | 2019-05-24 | 2019-08-16 | 吉林建筑科技学院 | A kind of foreign matter detection system and detection method for heating and ventilating equipment |
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