CN104424064A - Diagnostic test method, diagnostic device and diagnostic system - Google Patents
Diagnostic test method, diagnostic device and diagnostic system Download PDFInfo
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- CN104424064A CN104424064A CN201310409141.4A CN201310409141A CN104424064A CN 104424064 A CN104424064 A CN 104424064A CN 201310409141 A CN201310409141 A CN 201310409141A CN 104424064 A CN104424064 A CN 104424064A
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Abstract
The invention discloses a diagnostic test method, a diagnostic device and a diagnostic system. According to the diagnostic test method, when an enabling mark is valid, diagnostic software is triggered, the input data required by the diagnostic software are searched in a tested content by taking a parameter code and a timestamp as indexes, and then the data input is processed by the diagnostic software, so that the diagnostic information and the diagnostic state mark are generated. The diagnostic software can perform corresponding operation according to the diagnostic information and the diagnostic state mark. According to the invention, a database is adopted for establishing an interactive and sharing platform for the test information and diagnostic information, the input output interface definition of the diagnostic device is standard, the fusion of test software and the diagnostic software is successfully realized, the diagnostic system is compatible with different diagnostic algorithm requirements, the efficiency and accuracy of the fault diagnosis are increased and the false alarm rate is effectively reduced.
Description
Technical field
The present invention relates to diagnostic test method, particularly relate to the method for diagnostic device, diagnostic system.
Background technology
Along with the development of science and technology, traditional system testing and diagnostic means have been difficult to be applicable to day by day complicated dual-use system.This main manifestations is fault detect rate and isolation rate is low, false alarm rate is high, maintenance cycle is long, costly, particularly to detect and time of isolated fault is oversize, expense is too high.
The UUT(unit under test that the present invention relates to) belong to the electronics of complex precise, each LRU(Field Replaceable Unit), SRU(shop replaceable unit) diversity of fault determines the complicacy of fault diagnosis and the diversity of method for diagnosing faults, single failure diagnostic techniques is difficult to accomplish exhaustive under normal circumstances, therefore, need to find one can meet multiple diagnostic techniques, the diagnostic test method of detection and isolated fault fast.
Summary of the invention
The invention provides a kind of diagnostic test method, diagnostic device and diagnostic system, solve the problems such as diagnose testing system fault detect rate is low, false alarm rate is high, fault location time is long.
For solving the problem, the invention provides a kind of diagnostic method, the method is comprised the steps: S1, is tested and obtain content measurement by the test event that testing software is corresponding to parameter codes, and this content measurement is at least combined by several in testDate time, test code name, test event, parameter codes, measured value and conclusion; S2, by the current test chart in content measurement write into Databasce and history test chart and using the timestamp of time as this content measurement writing content measurement, measured value in content measurement is judged whether within normal span while write content measurement, if go beyond the scope, make enabler flags effective, otherwise enabler flags is invalid; S3, when enabler flags is effective trigger diagnostic software, and with described parameter codes and timestamp for the input data required for this diagnostic software searched in index in described content measurement, these input data of diagnostic software process and produce diagnostic message and diagnostic state mark, every bar diagnostic message comprises sequence number, time, symptom, location, reason, strategy, adds survey project, test code name the Current Diagnostic table be written in database and historical diagnostic table; S4, transmission diagnostic state mark are to testing software, and testing software resolves diagnostic state mark, when diagnostic state is masked as 0, represents and diagnoses unsuccessfully; When diagnostic state is masked as 1, testing software finds out the maximum diagnostic message of sequence number in historical diagnostic table, when the policy field in diagnostic message is 0, calls maintenance software maintenance corresponding failure according to the location field in this diagnostic message; When policy field in diagnostic message is 1, represents and do not diagnose out result; When policy field in diagnostic message is 2, reads adding survey project and adding survey code name in diagnostic message and carry out adding survey, and diagnose adding survey project according to step S1 to S4.
The present invention also discloses a kind of diagnostic device, the test result of this device to testing software is diagnosed, it is characterized in that: this diagnostic device comprises load module, trigger module, diagnostic software and output module, wherein, described load module receives the enabler flags of self-testing software, timestamp and parameter codes, with timestamp and parameter codes for the input data required for this diagnostic software searched in index in the content measurement of testing software; Described trigger module, when enabler flags is 1, starts described diagnostic software, when enabler flags is 0, does not start diagnostic software; The described diagnostic software module that is triggered starts the input data that find of aftertreatment and produces diagnostic message and diagnostic state mark, and every bar diagnostic message comprises sequence number, time, symptom, location, reason, strategy, adds survey project, test code name the Current Diagnostic table be written in database and historical diagnostic table; Described output module exports diagnostic state mark and diagnostic message extremely described testing software.
The present invention also discloses a kind of diagnostic system, this diagnostic system comprises testing software and diagnostic device, wherein, the test event that described testing software is corresponding to parameter codes is tested and obtains content measurement, this content measurement is at least by the testDate time, test code name, test event, parameter codes, several in measured value and conclusion combine, by the current test chart in content measurement write into Databasce and history test chart and using the timestamp of time as this content measurement writing content measurement, measured value in content measurement is judged whether within normal span while write content measurement, if go beyond the scope, make enabler flags effective, otherwise, enabler flags is invalid, diagnostic device comprises load module, trigger module, diagnostic software and output module, wherein, described load module receives the enabler flags of self-testing software, timestamp and parameter codes, with timestamp and parameter codes for the input data required for this diagnostic software searched in index in the content measurement of testing software, described trigger module, when enabler flags is 1, starts described diagnostic software, when enabler flags is 0, does not start diagnostic software, the described diagnostic software module that is triggered starts the input data that find of aftertreatment and produces diagnostic message and diagnostic state mark, and every bar diagnostic message comprises sequence number, time, symptom, location, reason, strategy, adds survey project, test code name the Current Diagnostic table be written in database and historical diagnostic table, described output module exports diagnostic state mark and diagnostic message extremely described testing software, described testing software resolves diagnostic state mark, when diagnostic state is masked as 0, represents and diagnoses unsuccessfully, when diagnostic state is masked as 1, testing software finds out the maximum diagnostic message of sequence number in historical diagnostic table, when the policy field in diagnostic message is 0, calls maintenance software maintenance corresponding failure according to the location field in this diagnostic message, when policy field in diagnostic message is 1, represents and do not diagnose out result, when policy field in diagnostic message is 2, reads adding survey project and adding survey code name in diagnostic message and carry out adding survey, transmission adds survey project and adds surveys the load module of content measurement corresponding to code name to diagnostic software to diagnose adding survey project.
Compared with prior art, the present invention has the following advantages:
The platform that the present invention adopts database sharing detecting information, diagnostic message mutual and shared, the IO interface definition of specification diagnostic device, successfully achieve the fusion of testing software and diagnostic software, this diagnostic system can compatible different diagnosis algorithm demand, improve fault diagnosis efficiency and accuracy, effectively reduce false alarm rate.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of diagnostic test method of the present invention.
Embodiment
By describing technology contents of the present invention, structural attitude in detail, reached object and effect, accompanying drawing is coordinated to be described in detail below in conjunction with embodiment.
Refer to Fig. 1, a kind of diagnostic test method of the present invention comprises the steps:
S1, tested and obtain content measurement by the test event that testing software is corresponding to parameter codes, this content measurement is at least combined by several in testDate time, test code name, test event, parameter codes, measured value and conclusion; In this step, the parameter codes that each test parameter correspondence one is unique, such as, corresponding three test parameters of the value of displacement on X-axis, Y-axis and Z axis, like this, need the corresponding parameter codes (such as 001) of value of testing X-axis in displacement, need corresponding another parameter codes (such as 002) of value of testing Y-axis in displacement, need corresponding 3rd parameter codes (such as 003) of value of testing Z axis in displacement.Produce content measurement as testing software processes parameter codes and belong to existing mature technology, do not repeat them here.The content that described content measurement comprises according to the difference of diagnosis algorithm is also different, but, each content measurement is at least combined by several in testDate time, test code name, test event, parameter codes, measured value and conclusion, such as, to diagnosis algorithm A, content measurement is made up of testDate time, test code name, test event, parameter codes and measured value; To diagnosis algorithm B, content measurement is made up of testDate time, test code name, test event, parameter codes, measured value and conclusion.The described testDate time starts time of testing to certain part, and such as, 13:20 divides and starts to test target seeker, then, 13:20 is exactly the testDate time.Test code name is the code name of part to be tested, such as, and target seeker 01, gyro 02 etc.Test event is a certain content of part to be tested, and such as, the displacement of gyro is exactly a test event.Measured value is the concrete data of test event, and such as, displacement is in the value of X-direction.Conclusion is the judged result to test value and reference value.
S2, by the current test chart in content measurement write into Databasce and history test chart and using the timestamp of time as this content measurement writing content measurement, measured value in content measurement is judged whether within normal span while write content measurement, if go beyond the scope, make enabler flags effective, otherwise enabler flags is invalid.In this step, how to write data and can adopt existing mature technology, do not repeat them here.Write content measurement and judge whether the measured value in content measurement is parallel step in normal span, guarantees the time consistency of timestamp and judged result, thus, could be that index finds content accurately in current content measurement with timestamp.
S3, when enabler flags is effective trigger diagnostic software, and with described parameter codes and timestamp for the input data required for this diagnostic software searched in index in described content measurement, these input data of diagnostic software process and produce diagnostic message and diagnostic state mark, every bar diagnostic message comprises sequence number, time, symptom, location, reason, strategy, add survey project and test code name and the Current Diagnostic table be written in database and historical diagnostic table.In this step, diagnostic software can adopt the diagnostic software in prior art, to determine according to the input interface of diagnostic software for the index input data of searching in described content measurement required for diagnostic software refer to parameter codes and timestamp, such as, A diagnosis algorithm needs test code name, test event and measured value just can diagnose, then, will with parameter codes and in the time for search index is to testing code name, test event and measured value accordingly, then, diagnostic software is inputed to so that diagnostic software diagnoses; B diagnosis algorithm needs test code name, test event, measured value and conclusion just can diagnose, then, with parameter codes and timestamp for search index inputs to diagnostic software so that diagnostic software diagnoses out result to testing code name, test event, test value and conclusion accordingly.In the present invention, the implication of each field of every bar diagnostic message of historical diagnostic table is as shown in the table:
| Field variable | Value (form) | Remarks |
| Sequence number | Int | Current Diagnostic table/historical diagnostic table |
| Time | Get the time of master routine transmission contained by diagnostic instruction (form is fixed by master routine) | Historical diagnostic table |
| Symptom | XXXXXXX character string | Current Diagnostic table/historical diagnostic table |
| Location | SXXX/LXXX character string | Current Diagnostic table/historical diagnostic table |
| Reason | XXXX character string | Current Diagnostic table/historical diagnostic table |
| Strategy | XXXXXXX character string | Current Diagnostic table/historical diagnostic table |
| Add survey project | MXXXXMXXXXMXXXX character string | Current Diagnostic table/historical diagnostic table |
| Test code name | XXXXXXX character string | Historical diagnostic table |
In above-mentioned table, " sequence number " field list is shown as the number of times that merit starts diagnostic software, and successfully start diagnostic software, this sequence number will add up 1 automatically at every turn.In " symptom " field, content is the parameter codes in input parameter, represents that the top event that this is diagnosed is that the test parameter that parameter codes is corresponding is overproof." location " string length is 4 characters, and field format is that character string SXXX/LXXX, SXXX represent SRU fault, LXXX is LRU fault, and XXX represents failure mode code name, is 999 to the maximum, can the source of trouble be known by the content of this location field, such as, know the parts producing fault." reason " field max-length is 255 characters, and form is " PXXXX=XX.XX, the upper limit is XX.XX, and lower limit is XX.XX.", reason refers to fault Producing reason.When relating to multiple parameter codes (" strategy " field values is 0), the corresponding diagnostic result record of each parameter codes.In " strategy " field, there are three groups of assembled state, testing software reads " strategy " field in the record that in diagnostic history diagnostics table, sequence number is maximum, therefore the record that sequence number is maximum is exactly up-to-date historical diagnostic table, the maximum record of sequence number in up-to-date historical diagnostic table is identical with recording in Current Diagnostic table, in " strategy " field 0, represent that diagnosis is out of order result, now test module calls maintenance modules, it is the record (may occur multiple faults) of 0 that maintenance modules reads all " strategy " fields in diagnostic history table, the information of " location " field during these are recorded and existing SRU/LRU database matching, if wherein any one records successfully coupling, then think that this diagnostic message is effective, extract the information of " location " field and " reason " field, in " strategy " field 1, represent and do not diagnose out result, also do not need to add survey again, in " strategy " field 2, represent that needs carry out adding survey.Adding survey project is character string, and form is MXXXXMXXXXMXXXX, and maximum length is 100 characters, namely can not more than 20 projects.
S4, transmission diagnostic state mark are to testing software, and testing software resolves diagnostic state mark, when diagnostic state is masked as 0, represents and diagnoses unsuccessfully; When diagnostic state is masked as 1, testing software finds out the maximum diagnostic message of sequence number in historical diagnostic table, when policy field in diagnostic message is 0, represent and diagnose out result, in such cases, can call maintenance software maintenance corresponding failure according to " location " field in this diagnostic message, this diagnostic message described can obtain from Current Diagnostic table, also can obtain in the diagnostic message that sequence number is maximum from historical diagnostic table.When policy field is 0, the content of " reason " field in diagnostic message can also be transferred to inform the reason of fault when keeping in repair corresponding failure; When policy field in diagnostic message is 1, represents and do not diagnose out result; When policy field in diagnostic message is 2, testing software adds survey item field by extraction, and carries out the component level cycle tests of resolving adding survey project corresponding and be loaded into testing software, and diagnoses adding survey project according to step S1 to S4.In this step, when again diagnosing after adding survey, add survey project with this and add that to survey enabler flags corresponding to test value corresponding to code be 1, add survey project with this and add and survey code dependent test value when going beyond the scope, the enabler flags of its correspondence is 0, such as, after in displacement, the value of X-axis and the value of Y-axis are diagnosed, also need that survey is added to the value of Z axis and could diagnose out result, in such cases, because the value of X-axis and Y-axis was diagnosed, so, the enabler flags corresponding with the value of X-axis and Y-axis is 0, if value corresponding to Z axis be not in normal range, then, the enabler flags corresponding with the value of Z axis is 1, like this, the value of X-axis and the value of Y-axis can not be diagnosed again, only diagnose Z axis value, thus, can raise the efficiency, but, the result of the value of diagnosis Z axis is by the Current Diagnostic table in write into Databasce and historical diagnostic table.
In sum, the platform that the present invention adopts database sharing detecting information, diagnostic message mutual and shared, the IO interface definition of specification diagnostic device, successfully achieve the fusion of testing software and diagnostic software, this diagnostic system can compatible different diagnosis algorithm demand, improve fault diagnosis efficiency and accuracy, effectively reduce false alarm rate.
Based on above-mentioned technical thought, the present invention also discloses a kind of diagnostic device, the test result of this device to testing software is diagnosed, it is characterized in that: this diagnostic device comprises load module, trigger module, diagnostic software and output module, wherein, described load module receives the enabler flags of self-testing software, timestamp and parameter codes, with timestamp and parameter codes for the input data required for this diagnostic software searched in index in the content measurement of testing software; Described trigger module, when enabler flags is 1, starts described diagnostic software, when enabler flags is 0, does not start diagnostic software; The described diagnostic software module that is triggered starts the input data that find of aftertreatment and produces diagnostic message and diagnostic state mark, and every bar diagnostic message comprises sequence number, time, symptom, location, reason, strategy, add survey project and test code name and the Current Diagnostic table be written in database and historical diagnostic table; Described output module exports diagnostic state mark and diagnostic message extremely described testing software.
The present invention also discloses a kind of diagnostic system, this diagnostic system comprises testing software and diagnostic device, wherein, the test event that described testing software is corresponding to parameter codes is tested and obtains content measurement, this content measurement is at least by the testDate time, test code name, test event, parameter codes, several in measured value and conclusion combine, by the current test chart in content measurement write into Databasce and history test chart and using the timestamp of time as this content measurement writing content measurement, measured value in content measurement is judged whether within normal span while write content measurement, if go beyond the scope, make enabler flags effective, otherwise, enabler flags is invalid, diagnostic device comprises load module, trigger module, diagnostic software and output module, wherein, described load module receives the enabler flags of self-testing software, timestamp and parameter codes, with timestamp and parameter codes for the input data required for this diagnostic software searched in index in the content measurement of testing software, described trigger module, when enabler flags is 1, starts described diagnostic software, when enabler flags is 0, does not start diagnostic software, the described diagnostic software module that is triggered starts the input data that find of aftertreatment and produces diagnostic message and diagnostic state mark, and every bar diagnostic message comprises sequence number, time, symptom, location, reason, strategy, adds survey project, test code name the Current Diagnostic table be written in database and historical diagnostic table, described output module exports diagnostic state mark and diagnostic message extremely described testing software, described testing software resolves diagnostic state mark, when diagnostic state is masked as 0, represents and diagnoses unsuccessfully, when diagnostic state is masked as 1, testing software finds out the maximum diagnostic message of sequence number in historical diagnostic table, when the policy field in diagnostic message is 0, calls maintenance software maintenance corresponding failure according to the location field in this diagnostic message, when policy field in diagnostic message is 1, represents and do not diagnose out result, when policy field in diagnostic message is 2, reads adding survey project and adding survey code name in diagnostic message and carry out adding survey, transmission adds survey project and adds surveys the load module of content measurement corresponding to code name to diagnostic software to diagnose adding survey project.In this scenario, described testing software is after adding survey, add survey project and add the test value of survey code when going beyond the scope, add survey project with this and add that to survey enabler flags corresponding to test value corresponding to code be 1, add survey project with this and add and survey code dependent test value when going beyond the scope, the enabler flags of its correspondence is 0.
Claims (4)
1. a diagnostic test method, is characterized in that: the method comprises the steps:
S1, tested and obtain content measurement by the test event that testing software is corresponding to parameter codes, this content measurement is at least combined by several in testDate time, test code name, test event, parameter codes, measured value and conclusion;
S2, by the current test chart in content measurement write into Databasce and history test chart and using the timestamp of time as this content measurement writing content measurement, measured value in content measurement is judged whether within normal span while write content measurement, if go beyond the scope, make enabler flags effective, otherwise enabler flags is invalid;
S3, when enabler flags is effective trigger diagnostic software, and with described parameter codes and timestamp for the input data required for this diagnostic software searched in index in described content measurement, these input data of diagnostic software process and produce diagnostic message and diagnostic state mark, every bar diagnostic message comprises sequence number, time, symptom, location, reason, strategy, adds survey project, test code name the Current Diagnostic table be written in database and historical diagnostic table;
S4, diagnosed after, return transmission diagnostic state mark to testing software, testing software resolves diagnostic state mark, when diagnostic state is masked as 0, represents and diagnoses unsuccessfully; When diagnostic state is masked as 1, testing software finds out the maximum diagnostic message of sequence number in Current Diagnostic table, when the policy field in diagnostic message is 0, calls maintenance software maintenance corresponding failure according to the location field in this diagnostic message; When policy field in diagnostic message is 1, represents and do not diagnose out result; When policy field in diagnostic message is 2, reads adding survey project and adding survey code name in diagnostic message and carry out adding survey, and diagnose adding survey project according to step S1 to S4.
2. diagnostic device, the test result of this device to testing software is diagnosed, and it is characterized in that: this diagnostic device comprises load module, trigger module, diagnostic software and output module, wherein,
Described load module receives the enabler flags of self-testing software, timestamp and parameter codes, with timestamp and parameter codes for the input data required for this diagnostic software searched in index in the content measurement of testing software;
Described trigger module, when enabler flags is 1, starts described diagnostic software, when enabler flags is 0, does not start diagnostic software;
The described diagnostic software module that is triggered starts the input data that find of aftertreatment and produces diagnostic message and diagnostic state mark through rational analysis, and every bar diagnostic message comprises sequence number, time, symptom, location, reason, strategy, adds survey project, test code name the Current Diagnostic table be written in database and historical diagnostic table;
Described output module exports diagnostic state mark and diagnostic message extremely described testing software.
3. diagnostic system, is characterized in that: this diagnostic system comprises testing software and diagnostic device, wherein,
The test event that described testing software is corresponding to parameter codes is tested and obtains content measurement, this content measurement is at least by the testDate time, test code name, test event, parameter codes, several in measured value and conclusion combine, by the current test chart in content measurement write into Databasce and history test chart and using the timestamp of time as this content measurement writing content measurement, measured value in content measurement is judged whether within normal span while write content measurement, if go beyond the scope, make enabler flags effective, otherwise, enabler flags is invalid,
Described diagnostic device comprises load module, trigger module, diagnostic software and output module, wherein, described load module receives the enabler flags of self-testing software, timestamp and parameter codes, with timestamp and parameter codes for the input data required for this diagnostic software searched in index in the content measurement of testing software; Described trigger module, when enabler flags is 1, starts described diagnostic software, when enabler flags is 0, does not start diagnostic software; The described diagnostic software module that is triggered starts the input data that find of aftertreatment and produces diagnostic message and diagnostic state mark, and every bar diagnostic message comprises sequence number, time, symptom, location, reason, strategy, adds survey project, test code name the Current Diagnostic table be written in database and historical diagnostic table; Described output module exports diagnostic state mark and diagnostic message extremely described testing software;
Described testing software resolves diagnostic state mark, when diagnostic state is masked as 0, represents and diagnoses unsuccessfully; When diagnostic state is masked as 1, testing software finds out the maximum diagnostic message of sequence number in historical diagnostic table, when the policy field in diagnostic message is 0, calls maintenance software maintenance corresponding failure according to the location field in this diagnostic message; When policy field in diagnostic message is 1, represents and do not diagnose out result; When policy field in diagnostic message is 2, read adding survey project and adding survey code name in diagnostic message to carry out adding survey, and survey adding survey project and adding current test chart and the history test chart that content measurement corresponding to code name is written to database, and provocative diagnosis software is diagnosed at this.
4. diagnostic system as claimed in claim 3, is characterized in that: described testing software adopts single diagnosis algorithm or comprehensive multi-fault Diagnosis algorithm, and described diagnostic software writes based on various translation and compiling environment, but finally provides with dynamic link library form.
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Application publication date: 20150318 |