CN106403168A - System and method for fault diagnosis for air-conditioning system - Google Patents

Abstract

The invention discloses a system and a method for fault diagnosis for an air-conditioning system. The system comprises a storage module, a data acquisition module and an upper computer, wherein the data acquisition module communicates with the air-conditioning system, and communicates with the upper computer; the data acquisition module is used for acquiring running data of the air-conditioning system and storing the running data in the storage module, and sending the running data stored by the storage module to the upper computer; and the upper computer carries out analysis processing on the running data stored by the storage module to carry out fault diagnosis after receiving the running data stored by the storage module. Therefore, independent and continuous complete data acquisition and record without influence of other factors can be carried out on the air-conditioning system such as a central air-conditioning mainframe on site, and rapid fault diagnosis is carried out, thus strategy generation is facilitated for solving problems, the high efficiency of maintenance and the experience of a user are improved, and the public praise of the product is ensured.

Description

Fault diagnosis system for air conditioning system and method

Technical field

The present invention relates to air-conditioning technical field, particularly to a kind of fault diagnosis system for air conditioning system and one kind Method for diagnosing faults for air conditioning system.

Background technology

No matter the operation of large-scale water dispenser and maintenance management, seem particularly significant for client or device fabrication commercial city.Phase Generally unit data is monitored by ipc monitor screen in the technology of pass, conventional operation data and warning can only be recorded.But, actual In application, special application scenarios, the working condition of different situations, unit is likely to occur unconventional fault in running Phenomenon, unconventional phenomenon of the failure has the features such as generation under specified conditions, discontinuous, difficult tracking, bad positioning.Host computer is supervised Control screen cannot monitor unconventional phenomenon of the failure, leads to be difficult to find reason within the limited time solving to ask under site environment , after sale in O＆M, once engineer and repeatedly rushed towards scene, but can not reappear the phenomenon that is out of order, and so can make quality after sale in topic Reduce, poor user experience, product public praise declines.

Correlation technique also propose a kind of the method that Cloud Server carries out remote monitoring is uploaded data to using network, but, The method is limited to the stability of network, if network goes wrong, monitoring system is at a standstill.

Content of the invention

It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.For this reason, the present invention One purpose is to propose a kind of fault diagnosis system for air conditioning system, and this system can carry out reliable, independent number According to record, realize quick fault diagnosis.

Further object is that proposing a kind of method for diagnosing faults for air conditioning system.

For reaching above-mentioned purpose, one aspect of the present invention embodiment proposes a kind of fault diagnosis system for air conditioning system System, including memory module, data acquisition module and host computer, described data acquisition module is communicated with described air conditioning system, And described data acquisition module is communicated with described host computer, wherein, described data acquisition module is used for obtaining described air-conditioning The service data of system simultaneously stores described service data to described memory module, and the operation by the storage of described memory module Data is activation gives described host computer；Described host computer receives after the service data of described memory module storage to described storage mould The service data of block storage is analyzed processing to carry out fault diagnosis.

The fault diagnosis system for air conditioning system proposing according to embodiments of the present invention, data acquisition module obtains air-conditioning The service data of system simultaneously stores service data to memory module, and the service data that memory module is stored is sent to Position machine, the service data that host computer stores to memory module after receiving the service data of memory module storage is analyzed processing To carry out fault diagnosis.Thus, this system air conditioning system such as central air-conditioning large scale computer scene can be carried out independent, continuous , be not affected by other factors ground partial data collection and record, and carry out quick tracing trouble, consequently facilitating generating strategy With solve problem, improve the high efficiency safeguarded and the experience of user, ensure product public praise simultaneously.

According to one embodiment of present invention, described data acquisition module includes：First communication unit, described first communication Unit is used for being communicated with described air conditioning system；Second communication unit, described second communication unit is used for and described host computer Communicated；Processor, described processor is connected with described first communication unit and described second communication unit, described processor For obtaining the service data of described air conditioning system by described first communication unit and storing described service data to described Memory module, and the service data that described memory module stores is sent to by described host computer by described second communication unit； Power supply chip, described power supply chip is used for being powered for described processor.

According to one embodiment of present invention, described data acquisition module also includes：Clock unit, described clock unit is used In for described data acquisition module provide synchronised clock；State indication unit, described state indication unit is used for indicating described number Working condition according to acquisition module.

According to one embodiment of present invention, described memory module stores described service data with TXT text formatting.

According to one embodiment of present invention, before described data acquisition module is operated, described host computer is additionally operable to Parameter configuration is carried out to described data acquisition module.

According to one embodiment of present invention, described data acquisition module stores to described memory module according to default stipulations Service data packed with generating run data message, and described service data message is sent to described host computer, institute State host computer and according to corresponding described default stipulations, described service data message is parsed and deposited with obtaining described memory module The service data of storage.

According to one embodiment of present invention, described host computer be additionally operable to by described memory module storage service data by It is stored in data base according to timestamps ordering, and the service data being stored in data base is classified according to parameter type, and according to The corresponding service data generating run curve of every kind of parameter type, to carry out fault diagnosis according to described operation curve.

According to one embodiment of present invention, described host computer is additionally operable to obtain the corresponding timestamp in trouble point, and according to The corresponding timestamp in described trouble point generates fault time section, and extracts described fault time section from described data base and correspond to Service data, and fault diagnosis is carried out according to the corresponding service data of described fault time section.

According to one embodiment of present invention, described host computer is further used for obtaining trouble point parameter type, and according to In described fault time section, parameter type corresponding service data in described trouble point generates failure operation curve, is examined with carrying out fault Disconnected.

According to one embodiment of present invention, described host computer is further used for, obtain trouble point parameter type and with institute State the parameter type of trouble point parameter type association, and according to parameter type association in described trouble point in described fault time section The corresponding service data of parameter type carries out fault diagnosis.

According to one embodiment of present invention, described host computer is additionally operable to described service data message is being carried out parsing it Front according to corresponding described default stipulations, described service data message is carried out verifying for the first time, and first time is verified successfully Described service data message carries out CRC check, and according to corresponding described default stipulations to CRC check successfully described operation Data message is parsed.

For reaching above-mentioned purpose, a kind of fault diagnosis side for air conditioning system that another aspect of the present invention embodiment proposes Method, comprises the following steps：Described data acquisition module obtains described air conditioning system by carrying out communicating with described air conditioning system Service data, and described service data is stored to the memory module of described data acquisition module；Described data acquisition module The service data of described memory module storage is sent to described host computer；Described host computer by with described data acquisition module Communicated to obtain the service data of described memory module storage, and the service data of described memory module storage is carried out point Analysis is processed to carry out fault diagnosis.

The method for diagnosing faults for air conditioning system proposing according to embodiments of the present invention, data acquisition module obtains air-conditioning The service data of system simultaneously stores service data to memory module, and the service data that memory module is stored is sent to Position machine, the service data that host computer stores to memory module after receiving the service data of memory module storage is analyzed processing To carry out fault diagnosis.Thus, the method air conditioning system such as central air-conditioning large scale computer scene can be carried out independent, continuous , be not affected by other factors ground partial data collection and record, and carry out quick tracing trouble, consequently facilitating generating strategy With solve problem, improve the high efficiency safeguarded and the experience of user, ensure product public praise simultaneously.

According to one embodiment of present invention, described memory module stores described service data with TXT text formatting.

According to one embodiment of present invention, the described method for diagnosing faults for air conditioning system also includes：Described Before data acquisition module is operated, described host computer carries out parameter configuration to described data acquisition module.

According to one embodiment of present invention, obtain the service data of described memory module storage, including：Described data is adopted Collection module is packed according to the service data that default stipulations store to described memory module with generating run data message, and will Described service data message is sent to described host computer；Described host computer is according to corresponding described default stipulations to described operation number Parsed according to message to obtain the service data of described memory module storage.

According to one embodiment of present invention, the service data of described memory module storage is analyzed processing to carry out Fault diagnosis, including：The service data that described memory module stores is stored in data base according to timestamps ordering by described host computer, And the service data being stored in data base is classified according to parameter type；Given birth to according to the corresponding service data of every kind of parameter type Become operation curve, so that fault diagnosis is carried out according to described operation curve.

According to one embodiment of present invention, the service data of described memory module storage is analyzed processing to carry out Fault diagnosis, also includes：Described host computer obtains the corresponding timestamp in trouble point, and according to the corresponding timestamp in described trouble point Generate fault time section；The corresponding service data of described fault time section is extracted from described data base, and according to described fault Time period, corresponding service data carried out fault diagnosis.

According to one embodiment of present invention, fault diagnosis is carried out according to the corresponding service data of described fault time section, Including：Obtain trouble point parameter type, and according to parameter type corresponding operation number in described trouble point in described fault time section According to generating failure operation curve, to carry out fault diagnosis.

According to one embodiment of present invention, fault diagnosis is carried out according to the corresponding service data of described fault time section, Including：Described host computer obtains trouble point parameter type and the parameter type associating with described trouble point parameter type；According to institute The corresponding service data of parameter type stating parameter type association in described trouble point in fault time section carries out fault diagnosis.

According to one embodiment of present invention, described host computer is before parsing to described service data message, institute Method of stating also includes：Described service data message is carried out verify for the first time according to corresponding described default stipulations；To for the first time Successfully described service data message carries out CRC check for verification；According to corresponding described default stipulations institute successful to CRC check State service data message to be parsed.

Brief description

Fig. 1 is the block diagram of the fault diagnosis system for air conditioning system according to embodiments of the present invention；

Fig. 2 is the block diagram of the fault diagnosis system for air conditioning system according to an embodiment of the invention；

Fig. 3 is the schematic diagram of the terminals of data acquisition module according to an embodiment of the invention；

Fig. 4 is the side view of data acquisition module according to an embodiment of the invention；

Fig. 5 is the flow chart of the method for diagnosing faults for air conditioning system according to embodiments of the present invention；

Fig. 6 is the flow chart of the method for diagnosing faults for air conditioning system according to an embodiment of the invention；And

Fig. 7 is the flow chart of the method for diagnosing faults for air conditioning system in accordance with another embodiment of the present invention.

Specific embodiment

Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein from start to finish The element that same or similar label represents same or similar element or has same or like function.Below with reference to attached The embodiment of figure description is exemplary it is intended to be used for explaining the present invention, and is not considered as limiting the invention.

Below with reference to the accompanying drawings fault diagnosis system for air conditioning system and the method for embodiment of the present invention proposition to be described.

Fig. 1 is the block diagram of the fault diagnosis system for air conditioning system according to embodiments of the present invention.As Fig. 1 institute Show, the fault diagnosis system for air conditioning system includes memory module 40, data acquisition module 10 and host computer 20, data acquisition Module 10 is communicated with air conditioning system 30, and data acquisition module 10 is communicated with host computer 20.Specifically, data acquisition Module 10 can be connected to carry out RS485 communication with air conditioning system 30, and data acquisition module 10 also can be connected with host computer 20 To carry out RS232 communication.

Wherein, data acquisition module 10 is used for obtaining the service data of air conditioning system 30 and storing service data to storage Module 40, and the service data that memory module 40 is stored is sent to host computer 20.Specifically, the operation number of air conditioning system 30 Join according to may include condenser entry/exit mouth temperature, condenser entry/exit mouth pressure, choke valve inlet pressure, Compressor Discharge Pressure etc. Numerical value.And, can be by being arranged on the corresponding operational parameter value of the sensor acquisition of corresponding collection point, for example can be by being arranged on The temperature sensor collection condenser inlet temperature of condenser inlet.

That is, arranging different collection points in air conditioning system 30 to gather different operational parameter values, in air-conditioning In the running of the live unit of for example middle central air-conditioning of system 30, data acquisition module 10 can be according to actual needs according to default Frequency acquisition gathers the operational parameter value of each collection point, and then obtains the service data of air conditioning system 30.Thus, data acquisition The service data that module 10 is capable of independent centering central air-conditioning scene unit is completely gathered and be recorded in memory module 40.

The service data that host computer 20 stores to memory module 40 after receiving the service data of memory module 40 storage is entered Row analyzing and processing is to carry out fault diagnosis.

That is, when needing to carry out data analysiss, the service data that can store memory module 40 is air conditioning system 30 history data imports in host computer 20, and host computer 20 can be analyzed processing to enter to the service data importing Row fault diagnosis.

Thereby, it is possible to monitor unconventional phenomenon of the failure, contribute to engineer and be quickly found out reason solve problem, improve The high efficiency safeguarded and the experience of user, ensure product public praise simultaneously.Moreover, it is also possible to prevent Server remote monitoring be subject to It is limited to stability, the problem of easily paralysis of network.

Memory module 40 is the storage device of data record, and the partial data of air conditioning system 30 real time execution can be stored in storage Module 40.Specifically, memory module 40 can set up file with default storage time interval, and using start time point as literary composition Part name is deposited.And, by test acquiescence 5S interval collection service data once, the memory module 40 of 8G internal memory can store 1 year to be had Remaining data volume, memory module 40 data can give tacit consent to after being filled with from file original position carry out cover storage.

In one embodiment of the invention, memory module 40 can be SD card.

According to a specific example of the present invention, memory module 40 can be with TXT text formatting storage running data.Namely Say, the partial data of air conditioning system 30 real time execution is stored in memory module 40 with TXT text formatting.Certainly, memory module 40 can Such as WORD or EXCEL form storage running data in other formats.It should be appreciated that host computer 20 can be according to different lattice Formula calls different programs.

In one embodiment of the invention, as shown in Fig. 2 memory module 40 can integrated with data acquisition module 10 set Put.Specifically, as shown in figure 4, mould can be stored in the outside setting memory card slot 41 of data acquisition module 10 for placing Block 40.Or, memory module 40 may also be arranged in electric cabinet.

According to one embodiment of present invention, as shown in Fig. 2 data acquisition module 10 includes：First communication unit 102, Processor 103, the second communication unit 104 and power supply chip 105.

Wherein, the first communication unit 102 is used for being communicated with air conditioning system 30, that is, say, the first communication unit 102 is number Data communication module with air conditioning system 30 when working according to acquisition module 10.Specifically, as Figure 2-3, the second communication unit 102 can be connected with air conditioning system 30 by the first communication interface J1, more specifically, the first communication unit 40 can communicate for RS485 Module, the first communication interface J1 can be RS485 interface, thus realizing between data acquisition module 10 and air conditioning system 30 RS485 communicates.

Second communication unit 104 is used for being communicated with host computer 20, that is, say, the second communication unit 104 is data acquisition Data communication module with host computer 20 when the data that memory module 40 stores is derived by module 10.Specifically, as Fig. 2-3 institute Show, the second communication unit 104 can be connected with host computer 20 by the second communication interface J2, more specifically, the second communication unit 104 Can be RS232 communication module, the second communication interface J2 can be RS232 interface, thus realizing data acquisition module 10 and host computer RS232 communication between 20.

Processor 103 is connected with the first communication unit 102, and processor 103 is used for obtaining sky by the first communication unit 102 The service data of adjusting system 30 simultaneously stores service data to memory module 40, and will store mould by the second communication unit 104 The service data of block 40 storage is sent to host computer 20.

Power supply chip 105 is used for being powered for processor 103.Specifically, power supply chip 105 is data acquisition module 10 There is provided DC source, wherein, external power source can be powered for data acquisition module 10 by the power interface J3 shown in Fig. 3, power supply The input of chip 105 can be connected with power interface J3, and the input of power supply chip 105 can be connected with processor 103, power supply core The supply voltage that piece 105 inputs to power interface J3 carries out transformation, voltage stabilizing is supplied to processor 103 after processing.For example, data is adopted The power supply supply district integrating module 10, as DC 6V～36V, is processed by 5V direct-current power supply exportable after power supply chip 105 Device 103.

Further, as shown in Fig. 2 data acquisition module 10 also includes：Clock unit 106 and state indication unit 107.

Wherein, clock unit 106 is used for providing synchronised clock for data acquisition module 10.Specifically, clock unit 106 Data time measuring point can be provided for gathered data, thus ensureing system clock accuracy, to ensure the accurate of data collection point Property, it is easy to later data analysis and fault diagnosis.More specifically, clock unit 106 can be powered by button cell.

State indication unit 107 is used for indicating the working condition of data acquisition module 10.Specifically, state indication unit 107 provide working condition instruction for data acquisition module, as shown in figure 4, state indication unit 107 may include instruction power supply status Power supply indicator 71 and instruction ruuning situation status indicator lamp 72, for example, may indicate that when power supply indicator 71 is often bright Power supply is powered normally, may indicate that module lacks memory module 40 such as SD card, status indicator lamp 72 when status indicator lamp 72 is often bright Data acquisition module 10 normal operation is may indicate that during with one second frequency scintillation.

In addition, as shown in Fig. 2 data acquisition module 10 also includes：Phototube coupling unit 108, phototube coupling unit 108 is even It is connected between the first communication unit 102 and processor 103, be additionally attached between the second communication unit 104 and processor 103.Light Electric isolution unit 108 be used for data acquisition module 10 is isolated with outside input/output, thus improve data integrity with Protection interconnection equipment.

Below the operation principle of host computer 20 is described in detail.

According to one embodiment of present invention, before data acquisition module 10 is operated, host computer 20 is additionally operable to logarithm Carry out parameter configuration according to acquisition module 10.That is, host computer 20 data acquisition module 10 can be operated before parameter Configuration, wherein, when before work, parameter configuration may include data command, equipment school, data storage interval, data memory format, number According to timestamp.Thus, the second communication unit 104 also enters line parameter for data acquisition module 10 by the software that host computer 20 is installed The communication module of configuration.

Specifically, diagnostic software can be parsed by installation data in host computer 20, during data acquisition module 10 configuration parameter, can First using 232 Serial Port Lines, host computer 20 is connected with data acquisition module 10, then recall data parse diagnostic software parameter join Put plug-in unit, the serial port set up serial ports, baud rate, stop position, check bit, with set up host computer 20 and data acquisition module 10 it Between communication.After communication success, further data command, equipment can be carried out to data acquisition module 10 in parameter configuration plug-in unit During school, data storage interval, data memory format, the parameter configuration such as data time stamp.

Wherein, data parsing diagnostic software can be according to the data command of default stipulations automatically generated data acquisition module 10. Data command can carry out the flexible configuration increasing newly, deleting, change in software according to demand.

According to one embodiment of present invention, the fortune that data acquisition module 10 stores to memory module 40 according to default stipulations Row data is packed with generating run data message, and service data message is sent to host computer 20, host computer 20 basis Corresponding default stipulations are parsed to service data message to obtain the service data of memory module 40 storage.

Further, host computer 20 was additionally operable to before service data message is parsed according to corresponding default stipulations Service data message is carried out verify for the first time, and successful service data message is verified to first time and carry out CRC check, and According to corresponding default stipulations, CRC check successful service data message is parsed.

It should be noted that the service data of memory module 40 storage may include many data, every data may include many Individual operational parameter value.During service data is imported host computer 20, every data can be carried out beat according to default stipulations Bag is to generate wall scroll data message, and can be continuously transmitted to upper with N bar wall scroll data message for one group according to default stipulations Machine 20, namely host computer 20 can gather N bar wall scroll data message every time.Wherein, N is the integer more than 1, and the numerical value of N can lead to Cross default stipulations configuration, N is preferably 10.

Specifically, the checking procedure of host computer 20 is as follows：

When host computer 20 monitors from the data file that memory module 40 imports, host computer 20 first determines whether data file Form whether be default file form such as TXT form, if it is, host computer 20 then receive memory module 40 transmission operation Data message, if it is not, then continue to monitor whether the data file importing from memory module 40.

As it was previously stated, service data message can be sent to host computer 20 in the way of N bar wall scroll data message is one group, and And the configuration according to default stipulations, after the bar number of every group of data message of regulation, for distinguishing two groups of data messages of arbitrary neighborhood, The last item wall scroll data message of every group of data message can be retransmited once i.e. every group of the last item wall scroll data message Continuously transmit twice.

Host computer 20 can remove the timestamp of corresponding wall scroll data message after receiving every wall scroll data message, and The wall scroll data message removing timestamp is monitored, and is monitoring that adjacent two wall scroll data message is identical When, then verify whether this two identical wall scroll data messages meet default stipulations configuration, whether attach most importance to what recurrence was sent The last item wall scroll data message.

If this two identical wall scroll data messages are unsatisfactory for default stipulations configuration, verify unsuccessfully, and reject Number of non-compliances evidence, number of non-compliances verifies the N bar wall scroll data message of this group unsuccessfully according to being.

If this two identical wall scroll data messages meet default stipulations configuration, verify successfully, and further Whether the byte number of every wall scroll data message of verification meets default stipulations configuration, if it is satisfied, then verifying successfully, that is, for the first time Verifying successfully, if be unsatisfactory for, verifying unsuccessfully, and reject number of non-compliances evidence, number of non-compliances verifies the wall scroll of failure according to being The N bar wall scroll data message of data message place group.

Right after first time verification success, can be according to the default stipulations successively N bar wall scroll datagram to every group of data message Literary composition is parsed, and carries out CRC check when parsing every wall scroll data message to corresponding wall scroll data message, and judges Whether CRC check is qualified, if qualified, CRC check success, continues next article of wall scroll data message of parsing until having parsed the N bar wall scroll data message, if unqualified, CRC check failure, reject number of non-compliances according to this wall scroll data message i.e., and Continue next article of wall scroll data message of parsing until having parsed the N article wall scroll data message.

Thus, verification to service data message, parsing are completed.In some embodiments of the invention, data can be passed through Parsing diagnostic software parses to service data message, when data parses, the service data of copy memory module 40 storage, And it is stored in the file management system of host computer 20, and then import data parsing diagnostic software, data parsing diagnostic software can be according to Mode above carries out data check, parsing automatically.

Further, according to one embodiment of present invention, host computer 20 is additionally operable to the operation storing memory module 40 Data is stored in data base according to timestamps ordering, and the service data being stored in data base is classified according to parameter type, with And according to every kind of parameter type corresponding service data generating run curve, so that fault diagnosis is carried out according to operation curve.

Specifically, host computer 20 is after the service data message that data acquisition module 10 is sent carries out verifying, parses, Service data after verification is successfully parsed is stored in data base.More specifically, can be from verification successfully every wall scroll datagram Multiple operational parameter values, such as condenser entry/exit mouth temperature, condenser entry/exit mouth pressure, throttling valve inlet pressure are parsed in literary composition Power, Compressor Discharge Pressure, and the operational parameter value parsing is stored in data base's such as data parsing according to timestamps ordering The SQLite data base of diagnostic software, thus, restores whole fortune in recording period for the air conditioning system 30 on the time line Line parameter value.

And, it is stored in the operational parameter value of data base to be classified according to parameter type, engineer can set as needed Put the parameter type needing to show operation curve, such as condenser inlet temperature, host computer 20, can after receiving setting instruction Recall operational parameter value in recording period for the relevant parameter type from data base, and generating run curve, for example recall cold Operational parameter value in recording period for the condenser inlet temperature, and condenser inlet temperature is generated according to the operational parameter value recalling Degree operation curve.And then operation curve can be shown by host computer 20 by display screen.

Thus, host computer 20 can generate the corresponding operation curve of many kinds of parameters type, and comprehensive many kinds of parameters type is corresponding Operation curve, can carry out rapid failure diagnosis.And, whole operational factors of the recordable air conditioning system 30 of memory module 40, from And it is able to record that unconventional phenomenon of the failure, contributing to engineer is quickly found out reason solve problem, improves the efficient of maintenance Property and user experience, simultaneously ensure product public praise.Moreover, it is also possible to prevent Server remote monitoring to be limited to network Stability, the problem of easily paralysis.

In addition, in one embodiment of the invention, can be by data base querying air conditioning system 30 in recording period Whole service datas.

Further, according to one embodiment of present invention, host computer 20 is additionally operable to obtain the corresponding timestamp in trouble point, And fault time section is generated according to the corresponding timestamp in trouble point, and extract the corresponding operation of fault time section from data base Data, and fault diagnosis is carried out according to the corresponding service data of fault time section.

And, host computer 20 is further used for obtaining trouble point parameter type, and is joined according to fault time section internal fault point The corresponding service data of several classes of type generates failure operation curve, to carry out fault diagnosis.

And, host computer 20 is further used for, obtain trouble point parameter type and the ginseng associating with trouble point parameter type Several classes of type, and carry out fault and examine according to the corresponding service data of parameter type of fault time section internal fault point parameter type association Disconnected.

Specifically, trouble point can be found out by checking service data curve, such as engineer checks the fortune of the first parameter The data exception in the first moment is found, then first parameter in the first moment is trouble point during row data and curves.

After finding trouble point, corresponding timestamp can be obtained by data base, and according to the trouble point corresponding time Stamp generates fault time section, such as using half an hour before and after the timestamp of trouble point as fault time section, then from data base Extract the halfhour operational parameter value in front and back of trouble point timestamp, run ginseng according to halfhour before and after the timestamp of trouble point Numerical value can carry out fault diagnosis.Wherein, the interval time before and after the timestamp of trouble point can be arranged according to the actual requirements.

Specifically, engineer according to the trouble point finding, can arrange parameter type such as first parameter of trouble point.On After position machine 20 receives trouble point setting instruction, can be according to the operational factor of half an hour first parameter before and after the timestamp of trouble point Value generate failure operation curve, that is, in half an hour before and after the timestamp of trouble point the first parameter service data curve, and then Failure operation curve can be shown by host computer 20 by display screen.Thus, engineer passes through to observe this failure operation curve Fault diagnosis can be carried out to air conditioning system 30.

And, engineer can also arrange the relevant parameter of the first parameter, the such as second parameter, the 3rd parameter, the 4th ginseng Number ..., M parameter, and the relatedness of the second parameter and the first parameter is more than the relatedness of the 3rd parameter and the first parameter, the The relatedness of three parameters and the first parameter is more than the relatedness of the 4th parameter and the first parameter, and by parity of reasoning, with the first parameter Relatedness gradually weakens.

Host computer 20 can obtain above-mentioned relevant parameter according to halfhour operational parameter value before and after the timestamp of trouble point Operational parameter value, and whether judge the operational parameter value of each relevant parameter beyond corresponding preset limited range, and according to Judged result carries out fault diagnosis, wherein, can preferentially judge the stronger relevant parameter of relatedness.

That is, first judge whether the operational parameter value of the second parameter exceeds the first preset limited range, if the trouble point time In half an hour before and after stamp, the operational parameter value beyond the first preset limited range is more than or equal to Q, then judge air conditioning system 30 Fault and the second relating to parameters, and export the first diagnostic result；If exceeding first in half an hour before and after the timestamp of trouble point The operational parameter value of preset limited range is less than Q, then judge that the fault of air conditioning system 30 is unrelated with the second parameter, continues to the 3rd Parameter is judged.Wherein, Q is positive integer, for example, be preferably 3.

In the same manner, then judge that whether the operational parameter value of the 3rd parameter exceeds the second preset limited range, if during trouble point Between stamp before and after in half an hour the operational parameter value beyond the second preset limited range be more than or equal to Q, then judge air conditioning system 30 Fault and the 3rd relating to parameters, and export second opinion result；If beyond the in half an hour before and after the timestamp of trouble point The operational parameter value of two preset limited range is less than Q, then judge that the fault of air conditioning system 30 is unrelated with the 3rd parameter, and continuation is to the Four parameters are judged.

Determine whether whether the operational parameter value of the 4th parameter exceeds the 3rd preset limited range, if the trouble point time In half an hour before and after stamp, the operational parameter value beyond the 3rd preset limited range is more than or equal to Q, then judge air conditioning system 30 Fault and the 4th relating to parameters, and export the 3rd diagnostic result；If exceeding the 3rd in half an hour before and after the timestamp of trouble point The operational parameter value of preset limited range is less than Q, then judge that the fault of air conditioning system 30 is unrelated with the 4th parameter, continues to the 5th Parameter is judged.

So, until determining N parameter, judge whether the operational parameter value of N parameter exceeds N-1 preset limit model Enclose, if the operational parameter value beyond N-1 preset limited range is more than or equal to Q in the half an hour in front and back of trouble point timestamp, Then judge fault and the N relating to parameters of air conditioning system 30, and export N-1 diagnostic result；If before the timestamp of trouble point In half an hour after, the operational parameter value beyond N-1 preset limited range is less than Q, then judge fault and the N of air conditioning system 30 Parameter is unrelated, by being manually analyzed to each parameter type corresponding failure operation curve, to carry out fault diagnosis.

Thus, the service data by being stored in data base can carry out fault diagnosis, and wherein, data parsing diagnostic software can press Carry out preliminary automatic diagnosis according to aforesaid way, and curve displaying can be carried out to service data, in order to manual analyses.

As described above, data parses the parameter configuration before diagnostic software can be operated to data acquisition module 10, and can The data of memory module 40 record is parsed.I.e. data parses diagnostic software and the TXT text of memory module 40 can be stored Data is parsed.In parsing, the correctness with control data is verified by default reduction algorithm, and will be verified successfully Data afterwards is stored in the self contained data base that data parses diagnostic software, thus, recovers air conditioning system on the time line in record Operational parameter value in time period.And, according to actual demand, data parsing diagnostic software can generate and show air conditioning system 30 operation curve, can quickly carry out fault diagnosis.

Thus, the fault diagnosis system of the embodiment of the present invention can be applicable to the different application scene of large-scale water dispenser, different work Under the conditions of condition, can independently carry out all the period of time unit data record, unmanned and not affected by other party factor.And, this event Barrier diagnostic system flexible configuration, autgmentability is strong, can flexible configuration data command according to demand, and follow-up access new data acquisition During module 10, only need to carry out simple normal data order configuration, without any other condition of modification.In addition, being opened by specific The data parsing diagnostic software sent out, can quickly search and be diagnosed to be operation on the basis of realizing totally according to monitoring and inquiry During unconventional failure problems, save O＆M manpower, material resources and time, improve O＆M response speed, then improve use Family is experienced.

The present invention also proposes a kind of method for diagnosing faults for air conditioning system.

Fig. 5 is the flow chart of the method for diagnosing faults for air conditioning system according to embodiments of the present invention.As shown in figure 5, The method for diagnosing faults that this is used for air conditioning system comprises the following steps：

S1：Data acquisition module obtains the service data of air conditioning system by carrying out communicating with air conditioning system, and will transport Row data storage to data acquisition module memory module.

Wherein, data acquisition module can be connected with air conditioning system to carry out RS485 communication.

S2：The service data that memory module stores is sent to host computer by data acquisition module.

Wherein, data acquisition module also can be connected with host computer to carry out RS232 communication.

Specifically, the service data of air conditioning system may include condenser entry/exit mouth temperature, condenser entry/exit mouth pressure, section The parameter values such as stream valve inlet pressure, Compressor Discharge Pressure.And, can be by being arranged on the sensor acquisition phase of corresponding collection point The operational parameter value answered, for example, can gather condenser inlet temperature by being arranged on the temperature sensor of condenser inlet.

That is, arranging different collection points within air-conditioning systems to gather different operational parameter values, in air-conditioning system In the running of the live unit of for example middle central air-conditioning of system, data acquisition module can be according to actual needs according to default collection frequency Rate gathers the operational parameter value of each collection point, and then obtains the service data of air conditioning system.Thus, data acquisition module can The service data of independent centering central air-conditioning scene unit is completely gathered and be recorded in memory module.

S3：Host computer obtains the service data of memory module storage by carrying out communicating with data acquisition module, and right The service data of memory module storage is analyzed processing to carry out fault diagnosis.

That is, when needing to carry out data analysiss, the service data that memory module stores can be air conditioning system History data imports in host computer, and host computer can be analyzed processing to the service data importing and be examined with carrying out fault Disconnected.

Thereby, it is possible to monitor unconventional phenomenon of the failure, contribute to engineer and be quickly found out reason solve problem, improve The high efficiency safeguarded and the experience of user, ensure product public praise simultaneously.Moreover, it is also possible to prevent Server remote monitoring be subject to It is limited to stability, the problem of easily paralysis of network.

Memory module is the storage device of data record, and the partial data of air conditioning system real time execution can be stored in storage mould Block.Specifically, memory module can set up file with default storage time interval, and is deposited using start time point as filename Put.And, by test acquiescence 5S interval collection service data once, the memory module of 8G internal memory can store the data having a surplus 1 year Amount, memory module data can give tacit consent to after being filled with from file original position carry out cover storage.

In one embodiment of the invention, memory module can be SD card.

According to a specific example of the present invention, memory module can be with TXT text formatting storage running data.Namely Say, the partial data of air conditioning system real time execution is stored in memory module with TXT text formatting.Certainly, memory module can be with other Form such as WORD or EXCEL form storage running data.It should be appreciated that host computer can call not according to different forms Same program.

In one embodiment of the invention, memory module can be integrally disposed with data acquisition module.Specifically, can count According to the outside of acquisition module, memory card slot is set for placing memory module.Or, memory module may also be arranged on automatically controlled In case.

Below the operation principle of host computer is described in detail.

According to one embodiment of present invention, the method for diagnosing faults for air conditioning system also includes：In data acquisition module Before block is operated, host computer carries out parameter configuration to data acquisition module.

That is, host computer data acquisition module can be operated before parameter configuration, wherein, before work, parameter is joined Put when may include data command, equipment school, data storage interval, data memory format, data time stamp.

Specifically, diagnostic software can be parsed by installation data in host computer, during data acquisition module configuration parameter, can first make With 232 Serial Port Lines, host computer is connected with data acquisition module, then recalls the parameter configuration plug-in unit that data parses diagnostic software, if Determine the serial port of serial ports, baud rate, stop position, check bit, to set up the communication between host computer and data acquisition module.Communication After success, can be when further data command, equipment school being carried out data acquisition module in parameter configuration plug-in unit, between data storage Every, the parameter configuration such as data memory format, data time stamp.

Wherein, data parsing diagnostic software can be according to the data command of default stipulations automatically generated data acquisition module.Number The flexible configuration increasing newly, deleting, change can be carried out according to order in software according to demand.

According to one embodiment of present invention, obtain the service data of memory module storage, including：Data acquisition module tuber Packed according to the service data that default stipulations store to memory module with generating run data message, and by service data message It is sent to host computer；Host computer is parsed to service data message according to corresponding default stipulations to obtain memory module storage Service data.

Further, before service data message is parsed, method also includes host computer：According to corresponding default Stipulations carry out to service data message verifying for the first time；Successful service data message is verified to first time and carries out CRC check；Root According to corresponding default stipulations, CRC check successful service data message is parsed.

Further, according to one embodiment of present invention, the service data of memory module storage is analyzed processing To carry out fault diagnosis, including：The service data that memory module stores is stored in data base according to timestamps ordering by host computer, and The service data being stored in data base is classified according to parameter type；Generated according to the corresponding service data of every kind of parameter type Operation curve, to carry out fault diagnosis according to operation curve.

It should be noted that the service data of memory module storage may include many data, every data may include multiple Operational parameter value.By service data import host computer during, can according to default stipulations every data is packed with Generate wall scroll data message, and can continuously transmit to host computer with N bar wall scroll data message for one group according to default stipulations, I.e. host computer can gather N bar wall scroll data message every time.Wherein, N is the integer more than 1, and the numerical value of N can be by presetting stipulations Configuration, N is preferably 10.

Specifically, as shown in fig. 6, the method for diagnosing faults of the embodiment of the present invention comprises the following steps：

S101：Importing data film.

S102：Judge whether the data file importing is TXT text.

If it is, execution step S103；If it is not, then return to step S101.

When host computer monitors from the data file that memory module imports, host computer first determines whether the form of data file Whether it is default file form such as TXT form, if it is, host computer then receives the service data message of memory module transmission, If it is not, then continuing to monitor whether the data file importing from memory module.

S103：Remove timestamp.

S104：Monitor two adjacent identical wall scroll data messages.

S105：Judge whether two identical wall scroll data messages meet default stipulations configuration.

If it is, execution step S106；If it is not, then execution step S107.

S106：Whether the byte number of every wall scroll data message meets default stipulations configuration.

If it is, execution step S108；If it is not, then execution step S107.

S107：Reject number of non-compliances evidence, return to step S104.

As it was previously stated, service data message can be sent to host computer in the way of N bar wall scroll data message is one group, and According to the configuration of default stipulations, after the bar number of every group of data message of regulation, for distinguishing two groups of data messages of arbitrary neighborhood, can The last item wall scroll data message that the last item wall scroll data message of every group of data message is retransmited once i.e. every group connects Supervention send twice.

Host computer can remove the timestamp of corresponding wall scroll data message after receiving every wall scroll data message, and right The wall scroll data message removing timestamp is monitored, and when monitoring that adjacent two wall scroll data message is identical, Then verify whether this two identical wall scroll data messages meet default stipulations configuration, it is last that recurrence of whether attaching most importance to is sent Article one, wall scroll data message.

If this two identical wall scroll data messages are unsatisfactory for default stipulations configuration, verify unsuccessfully, and reject Number of non-compliances evidence, number of non-compliances verifies the N bar wall scroll data message of this group unsuccessfully according to being.

If this two identical wall scroll data messages meet default stipulations configuration, verify successfully, and further Whether the byte number of every wall scroll data message of verification meets default stipulations configuration, if it is satisfied, then verifying successfully, that is, for the first time Verifying successfully, if be unsatisfactory for, verifying unsuccessfully, and reject number of non-compliances evidence, number of non-compliances verifies the wall scroll of failure according to being The N bar wall scroll data message of data message place group.

S108：Continuously parsed successively according to default stipulations.

S109：Judge whether CRC check is qualified.

If it is, execution step S111；If it is not, then execution step S110.

S110：Reject number of non-compliances evidence, return to step S108.

Right after first time verification success, can be according to the default stipulations successively N bar wall scroll datagram to every group of data message Literary composition is parsed, and carries out CRC check when parsing every wall scroll data message to corresponding wall scroll data message, and judges Whether CRC check is qualified, if qualified, CRC check success, continues next article of wall scroll data message of parsing until having parsed the N bar wall scroll data message, if unqualified, CRC check failure, reject number of non-compliances according to this wall scroll data message i.e., and Continue next article of wall scroll data message of parsing until having parsed the N article wall scroll data message.

Thus, verification to service data message, parsing are completed.In some embodiments of the invention, data can be passed through Parsing diagnostic software parses to service data message, when data parses, the service data of copy memory module storage, and It is stored in the file management system of host computer, and then imports data parsing diagnostic software, data parsing diagnostic software can be according to above Mode automatically carry out data check, parsing.

S111：Parse operational parameter value from service data message.

S112：Operational parameter value is stored in data base according to timestamps ordering.

Specifically, host computer is after the service data message that data acquisition module is sent carries out verifying, parses, high-ranking officers Test the service data after successful parsing and be stored in data base.More specifically, can be from verification successfully every wall scroll data message Parse multiple operational parameter values, for example condenser entry/exit mouth temperature, condenser entry/exit mouth pressure, choke valve inlet pressure, Compressor Discharge Pressure, and the operational parameter value parsing is stored in data base's such as data parsing diagnosis according to timestamps ordering The SQLite data base of software, thus, restores whole operational factors in recording period for the air conditioning system on the time line Value.

S113：Setting needs to show the parameter type of operation curve.

S114：Generate and show operation curve.

Specifically, the operational parameter value being stored in data base can be classified according to parameter type, and engineer can be as needed Setting needs to show the parameter type of operation curve, such as condenser inlet temperature, and host computer, can after receiving setting instruction Recall operational parameter value in recording period for the relevant parameter type from data base, and generating run curve, for example recall cold Operational parameter value in recording period for the condenser inlet temperature, and condenser inlet temperature is generated according to the operational parameter value recalling Degree operation curve.And then operation curve can be shown by host computer by display screen.

S115：Comprehensive multiple operation curves, carry out fault diagnosis.

Specifically, host computer can generate the corresponding operation curve of many kinds of parameters type, and comprehensive many kinds of parameters type is corresponding Operation curve, can carry out rapid failure diagnosis.And, whole operational factors of the recordable air conditioning system of memory module, so as to Enough recorded unconventional phenomenon of the failure, contribute to engineer and be quickly found out reason solve problem, improve the high efficiency safeguarded and The experience of user, ensures product public praise simultaneously.Moreover, it is also possible to prevent Server remote monitoring to be limited to stablizing of network Property, the problem of easily paralysis.

In addition, in one embodiment of the invention, can be by data base querying air conditioning system in recording period All service datas.

Further, according to one embodiment of present invention, the service data of memory module storage is analyzed processing To carry out fault diagnosis, also include：Host computer obtains the corresponding timestamp in trouble point, and is given birth to according to the corresponding timestamp in trouble point Become fault time section；Extract the corresponding service data of fault time section from data base, and according to the corresponding fortune of fault time section Row data carries out fault diagnosis.

And, fault diagnosis is carried out according to the corresponding service data of fault time section, including：Obtain trouble point parameter class Type, and failure operation curve is generated according to the corresponding service data of fault time section internal fault point parameter type, to carry out fault Diagnosis.

And, fault diagnosis is carried out according to the corresponding service data of fault time section, including：Host computer obtains trouble point ginseng Several classes of type and the parameter type associating with trouble point parameter type；Ginseng according to the association of fault time section internal fault point parameter type The corresponding service data of several classes of type carries out fault diagnosis.

Specifically, as shown in fig. 7, the method for diagnosing faults of another specific embodiment of the present invention comprises the following steps：

S201：Trouble point timestamp is searched from data base.

S202：Extract the halfhour operational parameter value in front and back of trouble point timestamp.

Wherein, trouble point can be found out by checking service data curve, such as engineer checks the operation number of the first parameter The data exception in the first moment is found, then first parameter in the first moment is trouble point during according to curve.

After finding trouble point, corresponding timestamp can be obtained by data base, and according to the trouble point corresponding time Stamp generates fault time section, such as using half an hour before and after the timestamp of trouble point as fault time section, then from data base Extract the halfhour operational parameter value in front and back of trouble point timestamp, run ginseng according to halfhour before and after the timestamp of trouble point Numerical value can carry out fault diagnosis.Wherein, the interval time before and after the timestamp of trouble point can be arranged according to the actual requirements.

S203：Parameter type according to trouble point generates failure operation curve.

Specifically, engineer according to the trouble point finding, can arrange parameter type such as first parameter of trouble point.On After position machine receives trouble point setting instruction, can be according to the operational parameter value of half an hour first parameter before and after the timestamp of trouble point Generate failure operation curve, that is, in half an hour before and after the timestamp of trouble point the first parameter service data curve, Jin Ershang Failure operation curve can be shown by position machine by display screen.Thus, engineer can be right by observing this failure operation curve Air conditioning system carries out fault diagnosis.

S204：Judge whether exceed the first preset limit model with the operational parameter value of the second parameter of the first parameter association Enclose.

If it is, execution step S205；If it is not, then execution step S206.

S205：Export the first diagnostic result.

S206：Judge whether exceed the second preset limit model with the operational parameter value of the 3rd parameter of the first parameter association Enclose.

If it is, execution step S207；If it is not, then execution step S208.

S207：Output second opinion result.

S208：Judge whether exceed the 3rd preset limit model with the operational parameter value of the 4th parameter of the first parameter association Enclose.

If it is, execution step S209；If it is not, then execution step S210.

S209：Export the 3rd diagnostic result.

S210：Judge whether exceed N-1 preset limit model with the operational parameter value of the N parameter of the first parameter association Enclose.

If it is, execution step S211；If it is not, then execution step S212.

S211：Export N-1 diagnostic result.

S212：Curve manual analyses.

That is, engineer can also arrange the relevant parameter of the first parameter, the such as second parameter, the 3rd parameter, Four parameters ..., M parameter, and the relatedness of the second parameter and the first parameter is more than associating of the 3rd parameter and the first parameter Property, the relatedness of the 3rd parameter and the first parameter is more than the relatedness of the 4th parameter and the first parameter, and by parity of reasoning, with the first ginseng The relatedness of number gradually weakens.

Host computer can obtain the fortune of above-mentioned relevant parameter according to halfhour operational parameter value before and after the timestamp of trouble point Line parameter value, and judge that whether the operational parameter value of each relevant parameter exceeds corresponding preset limited range, and according to sentencing Disconnected result carries out fault diagnosis, wherein, can preferentially judge the stronger relevant parameter of relatedness.

That is, first judge whether the operational parameter value of the second parameter exceeds the first preset limited range, if the trouble point time In half an hour before and after stamp, the operational parameter value beyond the first preset limited range is more than or equal to Q, then judge air conditioning system 30 Fault and the second relating to parameters, and export the first diagnostic result；If exceeding first in half an hour before and after the timestamp of trouble point The operational parameter value of preset limited range is less than Q, then judge that the fault of air conditioning system is unrelated with the second parameter, continues to join to the 3rd Number is judged.Wherein, Q is positive integer, for example, be preferably 3.

In the same manner, then judge that whether the operational parameter value of the 3rd parameter exceeds the second preset limited range, if during trouble point Between stamp before and after in half an hour the operational parameter value beyond the second preset limited range be more than or equal to Q, then judge air conditioning system Fault and the 3rd relating to parameters, and export second opinion result；If exceeding second in half an hour before and after the timestamp of trouble point The operational parameter value of preset limited range is less than Q, then judge that the fault of air conditioning system is unrelated with the 3rd parameter, continues to join to the 4th Number is judged.

Determine whether whether the operational parameter value of the 4th parameter exceeds the 3rd preset limited range, if the trouble point time In half an hour before and after stamp, the operational parameter value beyond the 3rd preset limited range is more than or equal to Q, then judge the event of air conditioning system Barrier and the 4th relating to parameters, and export the 3rd diagnostic result；If pre- beyond the 3rd in half an hour before and after the timestamp of trouble point The operational parameter value of restriction scope is less than Q, then judge that the fault of air conditioning system is unrelated with the 4th parameter, continues to the 5th parameter Judged.

So, until determining N parameter, judge whether the operational parameter value of N parameter exceeds N-1 preset limit model Enclose, if the operational parameter value beyond N-1 preset limited range is more than or equal to Q in the half an hour in front and back of trouble point timestamp, Then judge fault and the N relating to parameters of air conditioning system, and export N-1 diagnostic result；If before and after the timestamp of trouble point In half an hour, the operational parameter value beyond N-1 preset limited range is less than Q, then judge fault and the N parameter of air conditioning system Unrelated, by being manually analyzed to each parameter type corresponding failure operation curve, to carry out fault diagnosis.

Thus, the service data by being stored in data base can carry out fault diagnosis, and wherein, data parsing diagnostic software can press Carry out preliminary automatic diagnosis according to aforesaid way, and curve displaying can be carried out to service data, in order to manual analyses.

As described above, data parses the parameter configuration before diagnostic software can be operated to data acquisition module, and can be right The data of memory module record is parsed.I.e. data parsing diagnostic software can enter to the TXT text data storage of memory module Row parsing.In parsing, the correctness with control data is verified by default reduction algorithm, and the number after success will be verified According to the self contained data base being stored in data parsing diagnostic software, thus, recover air conditioning system on the time line in recording period Interior operational parameter value.And, according to actual demand, data parsing diagnostic software can generate and show the operation of air conditioning system Curve, can quickly carry out fault diagnosis.

Thus, the fault diagnosis system of the embodiment of the present invention can be applicable to the different application scene of large-scale water dispenser, different work Under the conditions of condition, can independently carry out all the period of time unit data record, unmanned and not affected by other party factor.And, this event Barrier diagnostic system flexible configuration, autgmentability is strong, can flexible configuration data command according to demand, and follow-up access new data acquisition During module, only need to carry out simple normal data order configuration, without any other condition of modification.In addition, passing through specific development Data parsing diagnostic software, can realize totally according to monitoring and inquiry on the basis of, can quickly search and be diagnosed to be and run Unconventional failure problems in journey, save manpower, material resources and the time of O＆M, improve O＆M response speed, then improve user Experience.

In describing the invention it is to be understood that term " " center ", " longitudinal ", " horizontal ", " length ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " up time The orientation of instruction such as pin ", " counterclockwise ", " axial ", " radially ", " circumferential " or position relationship be based on orientation shown in the drawings or Position relationship, is for only for ease of the description present invention and simplifies description, rather than the device of instruction or hint indication or element must Must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.

Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or hint relative importance Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or Implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two, three Individual etc., unless otherwise expressly limited specifically.

In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixation " etc. Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be that machinery connects Connect or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be in two elements The connection in portion or the interaction relationship of two elements, limit unless otherwise clear and definite.For those of ordinary skill in the art For, above-mentioned term concrete meaning in the present invention can be understood as the case may be.

In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score permissible It is the first and second feature directly contacts, or the first and second features pass through intermediary mediate contact.And, fisrt feature exists Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.

In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office Combine in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel Close and combine.

Although embodiments of the invention have been shown and described above it is to be understood that above-described embodiment is example Property it is impossible to be interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned Embodiment is changed, changes, replacing and modification.

Claims (20)

1. a kind of fault diagnosis system for air conditioning system it is characterised in that include memory module, data acquisition module and Position machine, described data acquisition module is communicated with described air conditioning system, and described data acquisition module is entered with described host computer Row communication, wherein,

Described data acquisition module is used for obtaining the service data of described air conditioning system and storing described service data to described Memory module, and the service data of described memory module storage is sent to described host computer；

The service data that described host computer stores to described memory module after receiving the service data of described memory module storage It is analyzed processing to carry out fault diagnosis.

2. the fault diagnosis system for air conditioning system according to claim 1 is it is characterised in that described data acquisition module Block includes：

First communication unit, described first communication unit is used for being communicated with described air conditioning system；

Second communication unit, described second communication unit is used for being communicated with described host computer；

Processor, described processor is connected with described first communication unit and described second communication unit, and described processor is used for Obtain the service data of described air conditioning system and store described service data to described storage by described first communication unit Module, and the service data that described memory module stores is sent to by described host computer by described second communication unit；

Power supply chip, described power supply chip is used for being powered for described processor.

3. the fault diagnosis system for air conditioning system according to claim 2 is it is characterised in that described data acquisition module Block also includes：

Clock unit, described clock unit is used for providing synchronised clock for described data acquisition module；

State indication unit, described state indication unit is used for indicating the working condition of described data acquisition module.

4. the fault diagnosis system for air conditioning system according to claim 1 it is characterised in that described memory module with TXT text formatting stores described service data.

5. the fault diagnosis system for air conditioning system according to claim 1 is it is characterised in that in described data acquisition Before module is operated, described host computer is additionally operable to carry out parameter configuration to described data acquisition module.

6. the fault diagnosis system for air conditioning system according to any one of claim 1-5 is it is characterised in that described Data acquisition module is packed according to the service data that default stipulations store to described memory module with generating run datagram Literary composition, and described service data message is sent to described host computer, described host computer is according to corresponding described default stipulations to institute State service data message to be parsed to obtain the service data of described memory module storage.

7. the fault diagnosis system for air conditioning system according to claim 6 is it is characterised in that described host computer is also used It is stored in data base in the service data storing described memory module according to timestamps ordering, and to being stored in the operation number of data base Classified according to according to parameter type, and according to every kind of parameter type corresponding service data generating run curve, with basis Described operation curve carries out fault diagnosis.

8. the fault diagnosis system for air conditioning system according to claim 7 is it is characterised in that described host computer is also used In the corresponding timestamp in acquisition trouble point, and fault time section is generated according to the corresponding timestamp in described trouble point, and from institute State and in data base, extract the corresponding service data of described fault time section, and according to the corresponding service data of described fault time section Carry out fault diagnosis.

9. the fault diagnosis system for air conditioning system according to claim 8 is it is characterised in that described host computer enters one Walk for obtaining trouble point parameter type, and according to parameter type corresponding operation number in described trouble point in described fault time section According to generating failure operation curve, to carry out fault diagnosis.

10. the fault diagnosis system for air conditioning system according to claim 8 is it is characterised in that described host computer enters One step is used for, and obtains trouble point parameter type and the parameter type associating with described trouble point parameter type, and according to described event In Downtime section, the corresponding service data of parameter type of described trouble point parameter type association carries out fault diagnosis.

11. fault diagnosis systems for air conditioning system according to claim 6 it is characterised in that described host computer also For before described service data message is parsed according to corresponding described default stipulations to described service data message Carry out verifying for the first time, and successfully described service data message carries out CRC check to first time verification, and according to corresponding To CRC check, successfully described service data message parses described default stipulations.

A kind of 12. method for diagnosing faults for air conditioning system are it is characterised in that comprise the following steps：

Described data acquisition module obtains the service data of described air conditioning system by carrying out communicating with described air conditioning system, and Described service data is stored to the memory module of described data acquisition module；

The service data that described memory module stores is sent to described host computer by described data acquisition module；

Described host computer obtains the service data of described memory module storage by carrying out communicating with described data acquisition module, And the service data of described memory module storage is analyzed processing to carry out fault diagnosis.

13. method for diagnosing faults for air conditioning system according to claim 12 are it is characterised in that described memory module Described service data is stored with TXT text formatting.

14. method for diagnosing faults for air conditioning system according to claim 12 are it is characterised in that also include：

Before described data acquisition module is operated, described host computer carries out parameter configuration to described data acquisition module.

15. method for diagnosing faults for air conditioning system according to any one of claim 12-14 it is characterised in that Obtain the service data of described memory module storage, including：

Described data acquisition module is packed according to the service data that default stipulations store to described memory module to generate fortune Row data message, and described service data message is sent to described host computer；

Described host computer is parsed to obtain described storage to described service data message according to corresponding described default stipulations The service data of module stores.

16. method for diagnosing faults for air conditioning system according to claim 15 are it is characterised in that to described storage mould The service data of block storage is analyzed processing to carry out fault diagnosis, including：

The service data that described memory module stores is stored in data base according to timestamps ordering by described host computer, and to being stored in number Service data according to storehouse is classified according to parameter type；

According to every kind of parameter type corresponding service data generating run curve, examined so that fault is carried out according to described operation curve Disconnected.

17. fault diagnosis systems for air conditioning system according to claim 16 are it is characterised in that to described storage mould The service data of block storage is analyzed processing to carry out fault diagnosis, also includes：

Described host computer obtains the corresponding timestamp in trouble point, and generates fault time according to the corresponding timestamp in described trouble point Section；

The corresponding service data of described fault time section is extracted from described data base, and corresponding according to described fault time section Service data carries out fault diagnosis.

18. method for diagnosing faults for air conditioning system according to claim 17 are it is characterised in that according to described fault Time period, corresponding service data carried out fault diagnosis, including：

Obtain trouble point parameter type, and according to parameter type corresponding service data in described trouble point in described fault time section Generate failure operation curve, to carry out fault diagnosis.

19. method for diagnosing faults for air conditioning system according to claim 17 are it is characterised in that according to described fault Time period, corresponding service data carried out fault diagnosis, including：

Described host computer obtains trouble point parameter type and the parameter type associating with described trouble point parameter type；

Event is carried out according to the corresponding service data of parameter type of parameter type association in described trouble point in described fault time section Barrier diagnosis.

20. method for diagnosing faults for air conditioning system according to claim 15 are it is characterised in that described host computer exists Before described service data message is parsed, methods described also includes：

Described service data message is carried out verify for the first time according to corresponding described default stipulations；

To first time verification, successfully described service data message carries out CRC check；

According to corresponding described default stipulations, to CRC check, successfully described service data message parses.