CN113157696A - Fuel cell test data processing method - Google Patents
Fuel cell test data processing method Download PDFInfo
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- CN113157696A CN113157696A CN202110359835.6A CN202110359835A CN113157696A CN 113157696 A CN113157696 A CN 113157696A CN 202110359835 A CN202110359835 A CN 202110359835A CN 113157696 A CN113157696 A CN 113157696A
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Abstract
The invention provides a fuel cell test data storage method and a data mining method, wherein the fuel cell test data storage method and the data mining method comprise the following steps: (1) newly building a data storage document, wherein the data storage document comprises a file layer, a channel group layer and a channel layer, wherein the file layer is positioned downwards in the hierarchical mode; (2) establishing a file layer attribute and a channel group attribute; and (3) establishing a channel by using the input identifier, storing the corresponding acquisition data times in the channel, and storing the acquisition data.
Description
Technical Field
The invention relates to the technical field of fuel cell testing, in particular to a fuel cell testing data storage method and a data mining method.
Background
Nowadays, fuel cells are well researched and developed, related testing and technical means are advanced, data testing frequency is higher and data storage quantity is larger and larger. Particularly, in a research and test stage, the fuel cell needs to be tested continuously day and night, test data comprise cathode and anode inlet and outlet pressure, cathode and anode inlet and outlet temperature, cooling water inlet and outlet temperature and pressure, cathode and anode gas humidity, water pump rotating speed, cooling water ion concentration, total current, total voltage, dozens to hundreds of single cell voltages and the like, and the quantity of collected data is more and more. Moreover, in order to find the optimum working environment and performance parameters of the fuel cell, a large number of test schemes and test steps are provided, and more severe requirements are provided for data recording and data backtracking.
However, most of the test methods have defects because data storage is based on formats such as excel or dat. For example, when the excel format is not displayed after 100 ten thousand rows of data and stores a lot of data, the excel text needs a period of time to be opened, and the waiting time required for opening hundreds of thousands of files rises in geometric multiples. In the existing data backtracking and mining of the fuel cell, needed data are mainly found by manpower little by little, and the relation between the fuel cell and external factors and performance parameters wanted by researchers are mined out by splicing one step by one step. These data analysis processes have greatly tested the endurance and care of researchers and analysts, and are particularly time consuming and labor intensive.
Disclosure of Invention
One of the main advantages of the present invention is to provide a method for processing fuel cell test data, wherein the method for processing fuel cell test data is based on TDMS format, and can achieve high-frequency, high-capacity data storage, fast tracking, and fast mining data extraction.
Another advantage of the present invention is to provide a method for processing fuel cell test data, wherein the method for processing fuel cell test data is implemented by mining the TDMS format data and converting the mined TDMS format data into the CSV format for storage separately, so as to facilitate the viewing and use of the critical data.
It is another advantage of the present invention to provide a fuel cell test data processing method that facilitates long-term, high-capacity, high-frequency storage of fuel cell test data.
It is another advantage of the present invention to provide a fuel cell test data processing method that facilitates solving the problem of rapidly mining and extracting critical data from large volumes of fuel cell test files and large volumes of fuel cell test data.
Another advantage of the present invention is to provide a fuel cell test data processing method, wherein the fuel cell test data processing method can automatically concatenate data in different files and generate a map function for analysis and processing by a researcher.
Another advantage of the present invention is to provide a method for processing fuel cell test data, wherein the method for processing fuel cell test data increases the storage rate of the fuel cell test data, facilitates data storage of the fuel cell during a high-frequency test, and can more fully explore the performance of the fuel cell.
Another advantage of the present invention is to provide a method for processing fuel cell test data, wherein the method for processing fuel cell test data implements accurate mining and fast extraction of fuel cell test data, saves a lot of time for analyzing fuel cell data, and accelerates research and development of fuel cells.
Another advantage of the present invention is to provide a method for processing fuel cell test data, wherein the method for processing fuel cell test data automatically processes fuel cell test data, extracts or concatenates different test data files, and automatically forms a graph, so that the fuel cell data processing is more accurate and efficient.
In accordance with one aspect of the present invention, the foregoing and other objects and advantages are achieved by a fuel cell test data processing method of the present invention including the fuel cell test data storing method, comprising the steps of:
(1) newly building a data storage document, wherein the data storage document comprises a file layer, a channel group layer and a channel layer, wherein the file layer is positioned downwards in the hierarchical mode;
(2) establishing a file layer attribute and a channel group attribute; and
(3) and establishing a channel by using the input identifier, storing the corresponding data acquisition times in the channel, and storing the acquired data.
According to one embodiment of the invention, the file layer attributes include information such as operator name, operation time, stack number, and number of stacks.
According to an embodiment of the present invention, the channel group comprises a Data channel group (Data) and an identification channel group (Note), wherein the step (2) further comprises the steps of:
(2.1) creating a new Data channel group attribute (Data group), including the name of the new Data channel group and the number of Data channels; and
and (2.2) creating an attribute (Note group) of the identification channel group, wherein the attribute of the identification channel group includes an identification group name and the number of identification channels.
According to an embodiment of the present invention, the step (3) further comprises the step (3.1) of creating channel attributes according to the Data group, wherein the channel attributes comprise test channel names, wherein the test channel names are names of fuel cell sensors, such as cathode and anode inlet and outlet pressures, cathode and anode inlet and outlet temperatures, cooling water inlet and outlet temperatures and pressures, cathode and anode gas humidity, water pump rotation speed, and the like.
According to an embodiment of the present invention, between the above steps (2) and (3), a judging step is included: judging whether the Note group is a new identifier or not, and if the Note group exists, returning to the step (2.2); and if not, executing the step (3).
According to an embodiment of the present invention, in the step (2), the method further includes a step of: judging whether a new fuel cell test mark is created, if so, continuing to execute the step (2.2); if not, executing step (3.1).
According to an embodiment of the present invention, in the step (3), the method further includes a step of: whether the Data group has a new test channel or not, if so, executing the step (3.1); if not, continuing to step (3), namely storing the data to the corresponding test channel.
According to one embodiment of the invention, the fuel cell test data mining method is further included, and comprises the following steps:
(a) inputting a query Data channel name, and using the input Data channel name to navigate Data group attributes in the Data file, inputting a first keyword and a last keyword which are mined, and using the input keyword to navigate Note attributes in the Data file; and
(b) and positioning to a data channel and positioning to an identifier channel, and acquiring data according to the positioned column number a and row number b.
According to one embodiment of the invention, after the query data channel name char is input, whether the channel name is null or not is judged, if the channel name is null, the steps are returned to, and the query data channel name is continuously input; if the Data channel is not empty, the Data group attributes in all the Data files in the tour folder are judged, whether the Data group has a char Data channel or not is judged, and if the Data group attributes are yes, the Data channel is positioned to the char Data channel (the column number a).
According to one embodiment of the invention, after inputting a first keyword (identifier note1) and a tail keyword (note2) of mining, judging whether the identifiers are empty, if so, returning to continuously input the first keyword (identifier note1) and the tail keyword (note2) of mining; if the judgment is not null, the Note attributes in all the data files in the patrol folder are judged, whether a Note group has a Note1 identifier channel and a Note2 identifier channel is judged, and if the Note group has the Note1 identifier channel and the Note2 identifier channel, the Note channel is positioned (the row number b); if not, continuing to calendar Note attributes in all data files in the patrol folder.
Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.
These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description and the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of a fuel cell test data format according to a first preferred embodiment of the present invention.
Fig. 2 is a schematic diagram of the attributes of the fuel cell test data file according to the first preferred embodiment of the present invention.
Fig. 3 is a schematic diagram of Data of the fuel cell test Data file according to the first preferred embodiment of the invention.
Fig. 4 is a schematic diagram of the Note data set of the fuel cell test data file according to the first preferred embodiment of the present invention.
Fig. 5 is a schematic data storage flow chart of a fuel cell test data storage method according to the first preferred embodiment of the invention.
Fig. 6 is a block diagram illustrating a data saving flow of a fuel cell test data storing method according to the first preferred embodiment of the present invention.
Fig. 7 is a schematic data mining flow chart of a fuel cell test data mining method according to the first preferred embodiment of the invention.
Fig. 8 is a block diagram of a data mining process of a fuel cell test data mining method according to the first preferred embodiment of the present invention.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
Referring to fig. 1 to 8 of the drawings accompanying this specification, a fuel cell test data processing method according to a first preferred embodiment of the present invention is explained in the following description. The fuel cell test data storage method and the data mining method are suitable for storing and mining test data obtained in a fuel cell test process. In the preferred embodiment of the present invention, as shown in fig. 1, the fuel cell testing apparatus creates a test data file having a three-layer data structure, which is divided into a file layer, a channel group layer and a channel layer, and saves the fuel cell test data in the test data file. The file layer, the channel group layer and the channel layer of the test data file are sequentially arranged layer by layer downwards, namely the channel group layer is positioned at the lower layer of the file layer, and the channel group layer is positioned at the upper layer of the channel layer.
The data layers of the test data file have respective attributes, wherein the attributes of the file piece comprise file name, tester information, stack number and test time, namely the file name, the tester information, the stack number and the test time of the fuel cell test are recorded in the file layers. The attributes of the channel group layer include a channel group name and a channel number. Preferably, in this preferred embodiment of the invention, the channel group layer is divided into two channel groups: a Data group (Data lane group) and a Note group (identification lane group). Each channel group has a respective storage channel, i.e. stored data content, and the channel attributes include a channel name and channel data.
Preferably, in this preferred embodiment of the present invention, the test data file newly created by the fuel cell test system is in a TDMS file format, that is, during the test process, the fuel cell test system stores the test data in the TDMS file format.
As shown in fig. 2 and 3, in the present invention, the method of storing the fuel cell test data includes: and the test equipment or the test software creates a test data document of a test data file according to the file name, the tester, the galvanic pile number and the test time. Data channels (Data i) are newly created in the Data channel group (Data group) according to the collected Data signals for storing Data. If it is judged that the tester inputs the first identifier, a labeled channel group (Note group) is newly created, and then a first labeled channel Note1 is newly created in the labeled channel group according to the first identifier. It is worth mentioning that the list first is the first keyword, and the first keyword is used to mark the beginning of a certain test process. That is, when the tester inputs the first identifier, the test process of the fuel cell under test is started, and the data saved number a1 at this time is stored.
After a period of testing, if the tester is judged to input a second identifier, wherein the second identifier is a tail keyword, and the second identifier is different from the second identifier. And a new identification channel note2 is newly created, the head of the column is a tail keyword, the end of a certain test process is marked, and the current time is stored by the storage time b 1. Similarly, if the first identifier (the first keyword, which is the second start of a certain test procedure) is input again, the now data saved number a2 is stored again in the note 1; the second identifier (the end key, which is the second end of a test procedure) is again entered, and the now data saved number b2 … is stored again in note 2. The test software or test equipment will cyclically store the signal Data collected by the test bench in the corresponding Data _ i at a set frequency.
After the test data are stored in the detection data file, the data files required in the test data are mined through a test data mining method. The test data mining method comprises the following steps of rapidly judging whether the file has the desired test content and data by inquiring whether the attribute of the identification channel group (Note group) in the file has a first keyword (Note1) and a last keyword (Note 2). Meanwhile, whether a desired channel name (a name of a fuel cell sensor, such as inlet and outlet pressure of a cathode and an anode, inlet and outlet temperature of the cathode and the anode, inlet and outlet temperature and pressure of cooling water, gas humidity of the cathode and the anode, rotating speed of a water pump and the like) exists in the attribute of the data channel group is inquired, and whether the desired signal data exist in the file or not is judged quickly. If both the attribute judgments exist, the file is indicated to have key data needing to be mined. The Data between a1 and b1 in the column are extracted by positioning the row number of the Data through the storage times a1 and b1 in the note1 and note2 and positioning the column in the Data group through the mined char Data channel. Similarly, data between a2 and b2 are extracted, and the extracted key data are mined. And if the splicing is needed, splicing the two pieces of data into one piece. And finally, displaying the data in a chart form, and saving the data in a new file, namely, the original data is not damaged or destroyed. Preferably, in this preferred embodiment of the invention, the mined files are saved to the new file in CSV format.
As shown in fig. 5 and 6, the fuel cell test data storage method of the present invention is shown, wherein the fuel cell test data storage method includes the steps of:
(1) newly building a data storage document, wherein the data storage document comprises a file layer, a channel group layer and a channel layer, wherein the file layer is positioned downwards in the hierarchical mode;
(2) establishing a file layer attribute and a channel group attribute; and
(3) and establishing a channel by using the input identifier, storing the corresponding data acquisition times in the channel, and storing the acquired data.
In the above fuel cell test data storage method, the file layer attributes include information such as operator name, operation time, stack number, and number of stacks. The channel group comprises a Data channel group (Data) and an identification channel group (Note), wherein the step (2) further comprises the steps of:
(2.1) creating a new Data channel group attribute (Data group), including the name of the new Data channel group and the number of Data channels; and
and (2.2) creating an attribute (Note group) of the identification channel group, wherein the attribute of the identification channel group includes an identification group name and the number of identification channels.
The step (3) further includes the step (3.1) of creating channel attributes by the Data group, wherein the channel attributes include test channel names, and the test channel names are names of fuel cell sensors, such as cathode and anode inlet and outlet pressure, cathode and anode inlet and outlet temperature, cooling water inlet and outlet temperature and pressure, cathode and anode gas humidity, water pump rotation speed, and the like. Between the above steps (2) and (3), a judging step is included: judging whether the Note group is a new identifier or not, and if the Note group exists, returning to the step (2.2); and if not, executing the step (3). In the step (2), the method further includes a step of: judging whether a new fuel cell test mark is created, if so, continuing to execute the step (2.2); if not, executing step (3.1).
In the step (3), the method further includes a step of: whether the Data group has a new test channel or not, if so, executing the step (3.1); if not, continuing to step (3), namely storing the data to the corresponding test channel.
After the fuel cell testing equipment is initialized, generating a TDMS document, and judging whether the title of the document is correct or not; and if the document title is correct, newly establishing TDMS file attributes, wherein the file attributes comprise information of operator name, operation time, electric pile number and the like. It is to be understood that the file attribute information is described herein by way of example only, and not by way of limitation. And establishing the attribute of the data channel group, wherein the data channel group data comprises the name of the channel group and the number of data channels. Judging whether a fuel cell test mark is newly built or not, if so, newly building a mark channel group attribute (Note group), wherein the mark channel group data comprises a mark group name mark channel number; if the judgment is no, the Data group creates a channel attribute, wherein the channel attribute comprises the name of the test channel (Data i, and Data column head)
After the attribute of the identified channel group is created, the Note group creates the attribute of the identified channel, wherein the channel attribute comprises an identified channel name (Note i identifies the column head). Judging whether the Note group has a new identifier, if so, returning to the step of creating an identification channel attribute by the Note group; if the judgment result is that the identification corresponds to the storage times of the acquired data, the acquired data is stored into a corresponding identification channel. After the Data group creates the channel attribute, judging whether the Data group has a new test channel, if so, returning to the Data group to create the channel attribute; if not, implementing data acquisition and storing the data into the corresponding test channel.
For example, as can be seen from the Note column in fig. 2, when the identifier SA _ start is input at the 3 rd time and the 11 th time of data storage, the SA _ start column in the Note group in fig. 3 records the storage times 3 and 11 at this time; when the identification SA _ end is input at the 9 th and 17 th data storage, the SA _ end column records the storage times 3 and 11 at this time in the Note group.
As shown in fig. 7 and 8, the mining method of the fuel cell test data of the present invention is shown, wherein the mining method of the fuel cell test data includes the steps of:
(a) inputting a query Data channel name, and using the input Data channel name to navigate Data group attributes in the Data file, inputting a first keyword and a last keyword which are mined, and using the input keyword to navigate Note attributes in the Data file; and
(b) and positioning to a data channel and positioning to an identifier channel, and acquiring data according to the positioned column number a and row number b.
For example, Humidity data of the SA _ start to SA _ end test process in a file needs to be mined. Then, whether the Note group attribute in the data file has SA _ start (first key word) and SA _ start (last key word) is queried, that is, whether the data file stores the data of the test procedure from SA _ start to SA _ end can be determined. The data in the SA _ start column and the SA _ end column, which are the number of rows of the key data to be mined, are further extracted according to fig. 3. Then, it is queried whether there is a Data channel name Humidity in the Data group attribute, and it can be seen from FIG. 2 that the Data channel name is Humidity in the 5 th column of the Data group. And then, the data needing to be mined can be quickly mined according to the number of the rows and the number of the columns.
As shown in the above figure, the system and the device for data mining are initialized, and a query data file and a new data saving file location path are established, and then the above step (a) is executed. After inputting the query data channel name char, judging whether the channel name is empty, if so, returning to the step, and continuing to input the query data channel name; and if the Data group attribute is not null, the Data group attribute in all the Data files in the calendar folder. And judging whether the Data group has a char Data channel or not, and if so, positioning the Data group to the char Data channel (the column number a). Inputting a first keyword (an identifier note1) and a tail keyword (note2) of mining, judging whether the identifier is empty, and if the identifier is judged to be empty, returning to continue inputting the first keyword (the identifier note1) and the tail keyword (note2) of mining; and if the data file is not null, the Note attributes in all the data files in the tour folder are judged. Judging whether the Note group has a Note1 and a Note2 identifier channel, if so, positioning to the identifier channel (the row number b); if not, continuing to calendar Note attributes in all data files in the patrol folder. And (c) judging whether the data in the Note1 and the Note2 are empty or not, if so, returning to the Note attribute in all the data files in the continuous tour folder, and if not, establishing the step (b).
After the step (b), displaying the mined data A in a waveform chart, or storing the mined data A in a CSV format file with the same title as that of the TDMS.
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.
Claims (10)
1. A fuel cell test data storage method and a data mining method are characterized by comprising the following steps:
(1) newly building a data storage document, wherein the data storage document comprises a file layer, a channel group layer and a channel layer, wherein the file layer is positioned downwards in the hierarchical mode;
(2) establishing a file layer attribute and a channel group attribute; and
(3) and establishing a channel by using the input identifier, storing the corresponding data acquisition times in the channel, and storing the acquired data.
2. The fuel cell test data storage method and data mining method of claim 1, wherein the file layer attributes include information of operator name, operation time, stack number, and number of stacks.
3. The fuel cell test Data storage method and Data mining method according to claim 1, wherein the channel group includes a Data channel group (Data) and an identification channel group (Note), wherein the step (2) further includes the steps of:
(2.1) creating a new Data channel group attribute (Data group), including the name of the new Data channel group and the number of Data channels; and
and (2.2) creating an attribute (Note group) of the identification channel group, wherein the attribute of the identification channel group includes an identification group name and the number of identification channels.
4. The fuel cell test Data storage method and Data mining method of claim 1, wherein the step (3) further comprises the step (3.1) of creating a channel attribute from the Data group, wherein the channel attribute comprises a test channel name, wherein the test channel name is Data i.
5. The fuel cell test data storage method and data mining method according to claim 1, wherein between the above steps (2) and (3), a judgment step is included: judging whether the Note group is a new identifier or not, and if the Note group exists, returning to the step (2.2); and if not, executing the step (3).
6. The fuel cell test data storage method and the data mining method according to claim 4, wherein in the step (2), further comprising a judging step of: judging whether a new fuel cell test mark is created, if so, continuing to execute the step (2.2); if not, executing step (3.1).
7. The fuel cell test data storage method and the data mining method according to claim 4, wherein in the step (3), further comprising a step of determining: whether the Data group has a new test channel or not, if so, executing the step (3.1); if not, continuing to step (3), namely storing the data to the corresponding test channel.
8. The fuel cell test data storage method and data mining method according to any one of claims 1 to 7, wherein the fuel cell test data mining method includes the steps of:
(a) inputting a query Data channel name, and using the input Data channel name to navigate Data group attributes in the Data file, inputting a first keyword and a last keyword which are mined, and using the input keyword to navigate Note attributes in the Data file; and
(b) and positioning to a data channel and positioning to an identifier channel, and acquiring data according to the positioned column number a and row number b.
9. The fuel cell test data storage method and the data mining method according to claim 8, wherein after the query data channel name char is input, it is determined whether the channel name is empty, and if it is determined to be empty, the above-mentioned step is returned, and the query data channel name is continuously input; if the Data channel is not empty, the Data group attributes in all the Data files in the tour folder are judged, whether the Data group has a char Data channel or not is judged, and if the Data group attributes are yes, the Data channel is positioned to the char Data channel (the column number a).
10. The fuel cell test data storage method and the data mining method as claimed in claim 8, wherein the first keyword (identifier note1) and the last keyword (note2) of the mining are inputted, and it is judged whether the identifiers are empty, and if it is judged to be empty, it is returned to continue to input the first keyword (identifier note1) and the last keyword (note2) of the mining; if the judgment is not null, the Note attributes in all the data files in the patrol folder are judged, whether a Note group has a Note1 identifier channel and a Note2 identifier channel is judged, and if the Note group has the Note1 identifier channel and the Note2 identifier channel, the Note channel is positioned (the row number b); if not, continuing to calendar Note attributes in all data files in the patrol folder.
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