CN114063590B - Method and system for diagnosing power-on startup failure of traction converter heterogeneous control system - Google Patents
Method and system for diagnosing power-on startup failure of traction converter heterogeneous control system Download PDFInfo
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Abstract
The invention discloses a method, a system and a medium for diagnosing power-on startup failure of a traction converter heterogeneous control system, wherein the method comprises a diagnosis method of a power-on initialization handshake stage, and specifically comprises the following steps: s01, the main control board waits for starting of the real-time control board, if the starting is successful, the step S02 is entered; otherwise writing the error context into the pile driving structure; s02, writing data into the real-time control board by the main control board, and feeding back a verification result to the main control board by the real-time control board; if the verification is abnormal, writing the error context into the pile driving structure body, and writing data by the main control board until the verification is normal, and entering step S03; s03, writing data into the main control board by the real-time control board for verification, and feeding back a verification result to the real-time control board by the main control board; if the verification is abnormal, the error context is written into the pile-up structure. The invention has the advantages of quick fault location, long-term reliable diagnosis data storage and the like.
Description
Technical Field
The invention mainly relates to the technical field of rail transit converter control systems, in particular to a method, a system, a medium and equipment for diagnosing power-on startup failure of a traction converter heterogeneous control system.
Background
The traction converter control system consists of hardware and software. Wherein the hardware mainly comprises a control chip such as DSP, CPU, FPGA, a power chip and the like; the software mainly comprises CPU time sequence control software, DSP real-time control software and the like.
After power-up, the traction converter control system has the possibility of start-up failure, for the following reasons:
1. Because the heterogeneous control system is complex, there may be a start failure problem caused by a failure such as a failure in loading software from the memory, a chip hardware problem, or the like.
2. Operations such as handshake, protection threshold configuration and the like, which are performed by detecting the starting states of the bus and the board card, are needed in the starting process of the control system, and the starting failure problem caused by handshake, protection threshold configuration failure and the like exists.
As described above, there are many causes of failure that cause the control system to start up, and many are sporadic, such as program loading failure due to voltage overshoot, and the like. Therefore, in the fault checking process, the fault is difficult to reproduce, so that great difficulty is caused to the positioning and solving of the fault, and a great deal of time and energy are spent.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems existing in the prior art, the invention provides a method, a system, a medium and equipment for diagnosing power-on startup failure of a traction converter heterogeneous control system for rapidly positioning faults.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
The utility model provides a traction converter heterogeneous control system's power on failure diagnosis method, includes the diagnosis method of power on initialization handshake phase, specifically:
s01, the main control board waits for starting of the real-time control board, if the starting is successful, the step S02 is entered; otherwise writing the error context into the pile driving structure;
S02, writing data into the real-time control board by the main control board, and feeding back a verification result to the main control board by the real-time control board; if the verification is abnormal, writing the error context into the pile driving structure body, and writing data by the main control board until the verification is normal, and entering step S03;
s03, writing data into the main control board by the real-time control board for verification, and feeding back a verification result to the real-time control board by the main control board; if the verification is abnormal, the error context is written into the pile-up structure.
As a further improvement of the above technical scheme:
the diagnosis method for setting the protection threshold is also included, and specifically comprises the following steps:
S1, judging whether a protection threshold is successfully read; if the reading is unsuccessful, writing the error context into the pile driving structure body, and not setting a threshold value; if the reading is successful, the step S2 is entered;
s2, judging whether the protection threshold is set successfully or not, and if the protection threshold is set unsuccessfully, writing the error context into the pile driving structure body.
The pile structure is stored into a ferroelectric memory.
The data of the ferroelectric memory is managed by a first-in first-out data management mechanism.
The ferroelectric memory is divided into two areas, namely a control area and a data area; the control area is used for managing data in the data area and has two key addresses: one address is used to indicate where the next diagnostic result should be stored, and the other address is used to indicate how much data has been stored; the data area is used for storing data of the diagnosis result.
Before step S01, setting a piling mark for waiting for the completion of starting the real-time control panel as 1; and after the real-time control panel is successfully started, setting a piling mark waiting for the completion of the starting of the real-time control panel as 2.
In step S02, before the main control board writes data to the real-time control board for verification, setting the piling flag of the main control board writing data and the real-time control board for verification to be 1; after the real-time control board checks to be normal, the main control board is set to write data, and a piling mark for checking the real-time control board is set to be 2.
In step S03, before the real-time control board writes data to the main control board for verification, setting the piling flag of the real-time control board writing data and the main control board for verification to be 1; after the main control board is checked to be normal, setting a piling mark for writing data by the real-time control board and checking the main control board as 2.
Before step S1, setting a parameter file reading protection threshold piling flag to be 1; and after the protection threshold is successfully read, setting a parameter file reading protection threshold piling sign as 2.
Setting a protection threshold value piling sign as 1 before judging whether the protection threshold is set successfully or not; and after the protection threshold is successfully set, setting a protection threshold piling sign as 2.
The invention also discloses a power-on startup failure diagnosis system of the traction converter heterogeneous control system, which comprises a first diagnosis module, wherein the diagnosis module is used for executing the diagnosis method of the power-on initialization handshake phase in the power-on startup failure diagnosis method of the traction converter heterogeneous control system.
As a further improvement of the above technical scheme:
The system also comprises a second diagnosis module, which is used for executing the diagnosis method of the power-on initialization handshake phase in the power-on startup failure diagnosis method of the traction converter heterogeneous control system.
The pile driving structure further comprises a diagnosis result storage management module which is used for storing and managing diagnosis results corresponding to the pile driving structure.
The diagnosis result storage management module is a ferroelectric memory.
The invention further discloses a computer readable storage medium having stored thereon a computer program which, when run by a processor, performs the steps of the power-on failure diagnosis method of a traction converter heterogeneous control system as described above.
The invention also discloses a computer device comprising a memory and a processor, wherein the memory stores a computer program which executes the steps of the power-on failure diagnosis method of the traction converter heterogeneous control system when being run by the processor.
Compared with the prior art, the invention has the advantages that:
according to the method, the system, the medium and the equipment for diagnosing the power-on startup failure of the heterogeneous control system of the traction converter, after the control system is abnormal, analysis and diagnosis are carried out on each execution step by adopting a software piling and tracking technology, and information such as fault reasons, fault time, fault context and the like when faults occur are stored, so that the fault reasons are directly positioned, and the fault analysis is convenient.
The invention adopts the parallel ferroelectric memory as a storage medium of diagnostic data, has reliable storage and high storage speed, and can provide a functional interface for exporting diagnostic results; a first-in first-out (FIFO) data management mechanism is adopted to manage the data in the ferroelectric memory, so that long-term storage is ensured.
Drawings
Fig. 1 is a block diagram of a heterogeneous control system of a converter according to the present invention.
FIG. 2 is a schematic diagram of a software diagnostic framework in accordance with the present invention.
Fig. 3 is a flow chart of a handshake diagnosis method according to an embodiment of the present invention.
Fig. 4 is a flowchart of a protection threshold diagnosis method according to an embodiment of the invention.
FIG. 5 is a flow chart of the diagnostic result storage management of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and specific examples.
As shown in fig. 1, the invention is specifically applied to a control system of a rail transit traction converter, wherein the control system adopts a heterogeneous control system, and specifically comprises a main control board, a real-time control board and a fault protection board, wherein the main control board performs data interaction with the real-time control board and the fault protection board through buses, and the functions corresponding to the boards are as follows: the main control board is responsible for managing bus communication, including handshake with the real-time control board and setting a protection threshold value of the fault protection board; the real-time control board completes the real-time control function; the fault protection board receives a protection threshold set by the main control board, and completes a fault protection function; the system also comprises a communication interface board, wherein the communication interface board receives external data and then sends the external data to the main control board, and simultaneously receives the data of the main control board and forwards the data of the main control board to external equipment.
Specifically, after power-up, the starting process of the converter control system is as follows:
(1) Starting the real-time control board, waiting for handshake with the main control board;
(2) Starting a main control board, and preparing and holding hands of the real-time control board;
(3) After the handshake between the main control board and the real-time control board is completed, reading protection parameters from the parameter table file, and setting a protection threshold for the fault protection board;
After the three steps are completed, the control system completes the power-on initialization function and starts to execute the control function.
As shown in fig. 3, the method for diagnosing power-on failure of the traction converter heterogeneous control system of the present invention includes a method for diagnosing a power-on initialization handshake phase and a method for diagnosing a protection threshold, wherein the method for diagnosing the power-on initialization handshake phase specifically includes the following steps:
s01, the main control board waits for starting of the real-time control board, if the starting is successful, the step S02 is entered; otherwise writing the error context into the pile driving structure;
S02, writing data into the real-time control board by the main control board, and feeding back a verification result to the main control board by the real-time control board; if the verification is abnormal, writing the error context into the pile driving structure body, and writing data by the main control board until the verification is normal, and entering step S03;
s03, writing data into the main control board by the real-time control board for verification, and feeding back a verification result to the real-time control board by the main control board; if the verification is abnormal, the error context is written into the pile-up structure.
The diagnosis method for setting the protection threshold comprises the following specific steps:
S1, judging whether a protection threshold is successfully read; if the reading is unsuccessful, writing the error context into the pile driving structure body, and not setting a threshold value; if the reading is successful, the step S2 is entered;
s2, judging whether the protection threshold is set successfully or not, and if the protection threshold is set unsuccessfully, writing the error context into the pile driving structure body.
As shown in fig. 2, the above diagnosis method is implemented by using a software piling technology and a software running track tracking technology. I.e. the pile is driven by the system analysis and initialization of the places where the abnormality may occur in each stage, the execution process of the tracking software is then analyzed, and if the abnormality is found, the pile data is stored.
In this embodiment, the data structure of the software pile is shown in Table 1 (a piece of pile information contains 32 words)
Table 1: piling information structure
| Word sequence number | Meaning of |
| 1 | Piling up mark: the value=1 indicates start and 2 indicates end |
| 2 | Step (a) |
| 3～5 | Time: year, month, day, time, minute, second |
| 6 | Diagnostic code |
| 7～32 | Context, including register addresses, for analyzing causes of failures |
The working principle of the software pile driving is as follows:
(1) Sequentially filling the structural body information according to the execution sequence of codes;
(2) After a set time (for example, 30 seconds) is reached after power-up, the diagnostic function collects piling information, judges the execution state of each stage according to the piling sign, considers that the stage is abnormal if the execution value is not equal to the end state, and stores the piece of piling information (32 words) into the ferroelectric memory.
According to the working principle of the software piling, the working process of the software piling is described as follows by combining the power-on starting process of the control system:
The handshake phase of power-on initialization is divided into 3 steps:
a. The main control board waits for the successful start of the real-time control board, after the real-time control board is started successfully, a mark is set to the main control board through a bus;
b. After the step a is completed, the main control board writes data to the real-time control board for verification, and the verification result is fed back to the main control board; if the verification fails, the main control writes until the verification is successful;
c. And b, after the step is finished, the real-time control board writes data to the main control board for verification, and the main control board feeds back a real-time control board verification result.
According to the handshake phase described above, the specific diagnostic flow after embedding pile driving is shown in fig. 3:
1) Setting a piling mark waiting for the completion of starting the real-time control board as 1;
2) Judging whether the real-time control board is started to finish, if not, writing the error context into the piling structure body; if yes, setting a piling mark waiting for the completion of starting of the real-time control panel as 2;
3) Setting a main control board to write data, and setting a piling mark for checking the real-time control board as 1;
4) Judging whether the real-time control board check data are normal or not, if not, writing the error context into the piling structure body; if so, the main control board is set to write data, and a piling mark for checking the real-time control board is 2;
5) Setting a piling mark for checking the master control board as 1;
6) Judging whether the main control board checks data normally or not, if not, writing the error context into the pile driving structure body; if so, the real-time control board is set to write data, and the piling mark checked by the main control board is 2.
After the diagnostic function has been reached for a predetermined time, the handshake pile driving information is scanned and if there is an anomaly, the diagnostic information is written into a diagnostic memory, as shown in fig. 2.
In this embodiment, the diagnostic procedure for setting the protection threshold is:
a. firstly, obtaining a protection threshold from a parameter table;
b. and setting a protection threshold value for the fault protection board, wherein the fault protection board can feed back the set value to the main control board, and the main control board checks according to the set threshold value until the set value is consistent with the fed back value, so that the setting is considered to be successful.
Specifically, as shown in fig. 4, the above diagnosis process is embedded in the complete process after piling, and is as follows:
1) Setting a parameter file reading protection threshold value piling mark as 1;
2) Judging whether the protection threshold is successfully read, if not, writing the error context into the pile driving structure body, and not setting a threshold value; if yes, setting a parameter file reading protection threshold value piling mark as 2;
3) Setting a protection threshold value piling sign as 1;
4) Judging whether the protection threshold is successful or not, if not, writing the error context into the pile driving structure body; if so, setting the protection threshold piling flag to 2.
In this embodiment, since the diagnostic data has great significance for fault analysis, the storage of the diagnostic result is required to satisfy a high requirement: 1) Can be reliably stored. Storage media cannot employ the common NorFlash and NandFlash because operating these memories requires file system support, which is a possibility of anomalies; 2) The storage speed is very fast, the starting abnormality caused by abnormal power failure possibly exists, and the diagnosis result needs to be stored instantaneously; 3) It is desirable to provide a functional interface that derives diagnostic results. Based on the above analysis, a parallel ferroelectric memory is used as a medium for diagnostic data, and since the capacity of the ferroelectric memory is very limited, typically only several hundred K, a dedicated memory data management method is required to be designed for long-term storage. Specifically, a first-in first-out (FIFO) data management mechanism is employed to manage data in the ferroelectric memory. Wherein the ferroelectric memory is divided into two areas, a control area and a data area, respectively. Wherein the purpose of the control area is for managing data in the data area, which has two key addresses: one address (head pointer) is used to indicate where the next diagnostic result should be stored, and the other address (used address pointer) is used to indicate how many pieces of data have been stored. The basic unit of the data stored in the data area is a complete diagnosis result, that is, a piece of data is a diagnosis result, and the operation flow is shown in fig. 5. When ferroelectric data needs to be exported, the already stored data can be imported into the file by the position of the current head pointer and the size of the used space.
The invention also discloses a power-on startup failure diagnosis system of the traction converter heterogeneous control system, which comprises a first diagnosis module and a second diagnosis module, wherein the first diagnosis module is used for executing the diagnosis method of the power-on initialization handshake stage in the power-on startup failure diagnosis method of the traction converter heterogeneous control system; the second diagnostic module is used for executing the diagnostic method of the power-on initialization handshake phase in the power-on startup failure diagnostic method of the traction converter heterogeneous control system.
In this embodiment, the pile driving structure further includes a diagnosis result storage management module (ferroelectric memory) for storing and managing the diagnosis result corresponding to the pile driving structure, where the management method is described in the method.
The invention further discloses a computer readable storage medium having stored thereon a computer program which, when run by a processor, performs the steps of the power-on failure diagnosis method of a traction converter heterogeneous control system as described above. The invention also discloses a computer device comprising a memory and a processor, wherein the memory stores a computer program which executes the steps of the power-on failure diagnosis method of the traction converter heterogeneous control system when being run by the processor.
The present invention may be implemented by implementing all or part of the procedures in the methods of the embodiments described above, or by instructing the relevant hardware by a computer program, which may be stored in a computer readable storage medium, and which when executed by a processor, may implement the steps of the embodiments of the methods described above. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, executable files or in some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. The present invention may be implemented by implementing all or part of the procedures in the methods of the embodiments described above, or by instructing the relevant hardware by a computer program, which may be stored in a computer readable storage medium, and which when executed by a processor, may implement the steps of the embodiments of the methods described above. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, executable files or in some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the invention without departing from the principles thereof are intended to be within the scope of the invention as set forth in the following claims.
Claims (16)
1. The power-on startup failure diagnosis method of the traction converter heterogeneous control system is characterized by comprising a diagnosis method of a power-on initialization handshake phase, and specifically comprises the following steps:
s01, the main control board waits for starting of the real-time control board, if the starting is successful, the step S02 is entered; otherwise writing the error context into the pile driving structure;
S02, writing data into the real-time control board by the main control board, and feeding back a verification result to the main control board by the real-time control board; if the verification is abnormal, writing the error context into the pile driving structure body, and writing data by the main control board until the verification is normal, and entering step S03;
s03, writing data into the main control board by the real-time control board for verification, and feeding back a verification result to the real-time control board by the main control board; if the verification is abnormal, the error context is written into the pile-up structure.
2. The method for diagnosing power-on failure of a traction converter heterogeneous control system according to claim 1, further comprising a step of setting a protection threshold, specifically:
S1, judging whether a protection threshold is successfully read; if the reading is unsuccessful, writing the error context into the pile driving structure body, and not setting a threshold value; if the reading is successful, the step S2 is entered;
s2, judging whether the protection threshold is set successfully or not, and if the protection threshold is set unsuccessfully, writing the error context into the pile driving structure body.
3. A method of diagnosing a power-up failure of a traction converter heterogeneous control system according to claim 1 or 2 wherein said piled up structure is stored in a ferroelectric memory.
4. A method for diagnosing a power-on failure of a traction converter heterogeneous control system according to claim 3, wherein data of said ferroelectric memory is managed by a first-in first-out data management mechanism.
5. The method for diagnosing power-on failure of a heterogeneous control system of a traction converter according to claim 4, wherein the ferroelectric memory is divided into two areas, a control area and a data area, respectively; the control area is used for managing data in the data area and has two key addresses: one address is used to indicate where the next diagnostic result should be stored, and the other address is used to indicate how much data has been stored; the data area is used for storing data of the diagnosis result.
6. The method for diagnosing power-on failure of a traction converter heterogeneous control system according to claim 1 or 2, wherein a pile flag waiting for completion of starting of a real-time control board is set to 1 before step S01; and after the real-time control panel is successfully started, setting a piling mark waiting for the completion of the starting of the real-time control panel as 2.
7. The method for diagnosing power-on failure of a heterogeneous control system of a traction converter according to claim 1 or 2, wherein in step S02, before the master control board writes data to the real-time control board for verification, a piling flag of the master control board writing data and the real-time control board for verification is set to be 1; after the real-time control board checks to be normal, the main control board is set to write data, and a piling mark for checking the real-time control board is set to be 2.
8. The method for diagnosing power-on failure of a heterogeneous control system of a traction converter according to claim 1 or 2, wherein in step S03, before the real-time control board writes data to the main control board for verification, a piling flag of the real-time control board writing data and the main control board for verification is set to 1; after the main control board is checked to be normal, setting a piling mark for writing data by the real-time control board and checking the main control board as 2.
9. The method for diagnosing power-on failure of a traction converter heterogeneous control system according to claim 2, wherein a profile read protection threshold pile flag is set to 1 before step S1; and after the protection threshold is successfully read, setting a parameter file reading protection threshold piling sign as 2.
10. The method for diagnosing power-on failure of a traction converter heterogeneous control system according to claim 2, wherein a protection threshold pile-up flag is set to 1 before judging whether the protection threshold is set successfully or not; and after the protection threshold is successfully set, setting a protection threshold piling sign as 2.
11. A power-on start-up failure diagnosis system of a traction converter heterogeneous control system, characterized by comprising a first diagnosis module for executing a diagnosis method of a power-on initialization handshake phase in a power-on start-up failure diagnosis method of a traction converter heterogeneous control system according to any one of claims 1 to 10.
12. The system according to claim 11, further comprising a second diagnostic module for performing a diagnostic method of a power-up initialization handshake phase in the power-up startup failure diagnostic method of the traction converter heterogeneous control system according to any one of claims 2 to 10.
13. The system for diagnosing power-up failure of a traction converter heterogeneous control system according to claim 11 or 12, further comprising a diagnosis result storage management module for storing and managing diagnosis results corresponding to the pile driving structure.
14. The system for diagnosing power-up failure of a traction converter heterogeneous control system according to claim 13, wherein said diagnostic result storage management module is a ferroelectric memory.
15. A computer readable storage medium having stored thereon a computer program, which when run by a processor performs the steps of the power-on start-up failure diagnosis method of a traction converter heterogeneous control system according to any one of claims 1 to 10.
16. A computer device comprising a memory and a processor, the memory having stored thereon a computer program, characterized in that the computer program, when run by the processor, performs the steps of the power-on failure diagnosis method of a traction converter heterogeneous control system according to any one of claims 1-10.
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| CN109752607A (en) * | 2017-11-06 | 2019-05-14 | 株洲中车时代电气股份有限公司 | A kind of method and system of traction converter failure diagnosis |
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| CN109318716B (en) * | 2017-12-20 | 2020-01-10 | 中车长春轨道客车股份有限公司 | Traction motor shaft temperature monitoring alarm control method, system and related device |
| CN110031743B (en) * | 2018-01-12 | 2021-10-01 | 株洲中车时代电气股份有限公司 | Self-detection method and device for rail transit vehicle traction converter |
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| CN109752607A (en) * | 2017-11-06 | 2019-05-14 | 株洲中车时代电气股份有限公司 | A kind of method and system of traction converter failure diagnosis |
| CN108001471A (en) * | 2017-12-12 | 2018-05-08 | 广州电力机车有限公司 | A kind of narrow gauge small fire vehicle control |
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