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Process Data Acquisition – PDA -- Detailed
analysis of quality manage&industrial big data sources |
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12 HDC - Hot
rolled high-frequency high-density Digital steel Coil |
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6 DCC - Digital Coil
Conversion and full process quality management |
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21 Research Form for PDA System Configuration in the
Steel Industry |
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11
HDP - High frequency density and speed Data Platform construction |
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7 CFS - Coil
Fast Search and statistics system
Google, Baidu, and Taobao are civil big data searches, with most of their data being triggered event based. iSearch is an industrial big data search, with similarities and significant differences. The latter is mainly high-frequency temporal and high-density conversion based. Digital steel coils are vast amounts of data on the millisecond and centimeter scales. If traditional databases are used to search and count certain indicators among tens of millions of steel coils, the calculation time will be on the hour scale, which is difficult to accept in practical work. The search and statistics speed of CFS (Coil Fast Search system) is hundreds of times faster than traditional databases, achieving the ability to search for 10000 steel pieces that meet the requirements in tens of millions of steel coils in seconds, and calculate certain indicators of these 10000 steel pieces, return extraction data and statistical results. For example, the search and statistics of all steel coils in 20 years are performed once, and the results are returned in 3 seconds. The configuration file iSearch Searchini. Simultaneously supporting control networks, office networks, wide area networks, etc. The search statistics results can be saved to local or remote files, databases, or received through MQTT. It supports file sharing, direct opening, FTP, and HTTP downloading, and provides download services for raw high-frequency data. 7.1 Changes in working methods
The traditional method is to save a certain statistical calculation result every day and summarize it when needed. If you want to modify a certain statistical accuracy range, you need to organize and calculate all the historical data once. The workload is huge and time-consuming, and some of the original data may have been lost. iSearch performs statistical calculations on the original high-frequency data every time, and the accuracy range can vary according to needs. 7.2 Changes in work platforms
Transforming from fixed and explicit computing to distributed high-speed computing primarily focused on search, the number of floating-point operations per second can reach tens or even hundreds of billions. 7.3 Changes in data frequency
granularity
Transforming from event triggered, second or meter level data accuracy to millisecond or centimeter level data accuracy. 7.4 System structure
Figure 7.1 CFS Signal Flow Chart 7.5 Implementation scheme
Figure 7.2 Schematic diagram of CFS system structure The iSearch supports B/S and C/S architectures. 7.6 Slice Indicator Search Statistics
The search range and statistical output value of the steel coil can be selected according to the following figure, and each steel can be divided into a maximum of 21 slices.
Figure 7.3 iSearch Search Interface
Figure 7.4 Storage of search statistics results in csv files and databases 7.7 Special Characteristics
Identification - Steel Grade Development and Evaluation
Special characteristic templates are defined by users, and any steel grade can be identified according to various templates. Steel grade developers establish statistical parameters for their respective steel grades to guide decision-making.
Figure 7.5 Special Characteristic Identification Search - Steel Grade Development 7.8 Guidance on the position where
strip steel should be cut off
Some special steel grades such as BS700MCK2 are particularly sensitive to temperature, and the excess parts should be cut off as much as possible before delivery to avoid a large number of quality objections.
Figure 7.6 Guidance on the position of strip steel to be cut 7.9 Search and download the original
data of theme slicing
Raw data is an important basis for analysis. A complete digital steel coil records thousands of variables. The CFS search system can quickly generate a list of steel coils and signals that users are interested in a certain topic .csv files can be stored in the database at the same time. All signal raw data in the topic is saved in .bin format for direct analysis and download. The length range can be specified when searching for raw data, The export method can be 1 point per meter, multiple points per meter, or how many points to export.
Figure 7.7 Search Download Theme Slice Raw Data
Figure 7.8 Steel coil list stored in csv
file and database |
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Apparatus test&Fault diagnosis&Quality analysis |
Millisecond data sampling Real-time data compression Capture signal instantaneous mutation |
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Develop communication protocol, Customized
analysis function, Open data interface, XinChuang domestic obsession
PDAServer
PDAClient