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Process Data Acquisition – PLC -- 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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8 DSO - Device
diagnostic Synchronous Oversampling system
8.1
Implementing 50us data acquisition through PLC
DSO - Device diagnostic Synchronous Oversampling system is based on PDA system. PDA system supports data acquisition of 50 kHz and 0.02 ms sampling period, the full historical data are stored, the real-time FFT calculation and curve analysis are supported, flexible and continuous time slice may be selected, the special AD converter board and special storage system may be used, the standard PLC system is also used to complete signal access and quickly realize system deployment. The over sampling AI module of PLC system can realize the sampling rate of 16KHz, 20kHz, etc., which can meet the access of acceleration sensor, speed sensor, displacement sensor, etc. in the equipment diagnosis system. At the same time, the process data such as speed, current, pressure, flow, temperature and other conventional acquisition cycle signals can also be accurately and synchronously collected, avoiding the complicated offline alignment work in the later stage. The system is simple and transparent, online and offline data can be directly connected to the diagnostic analysis system, and the calculation results can be obtained immediately, supporting 2 million spectral lines.
Beckhoff ELM series of measurement technology ELM3xxx Siemens ET200 SP HS AI 6ES7531-7NF10-0AB0 AI 8xU/I HS
Figure 8.1 Equipment Diagnosis Data Acquisition System Based on PLC
Figure 8.2 Beckhoff PLC oversampling data acquisition Real-time FFT calculation and curve analysis.
Figure 8.3 real-time FFT calculation and curve analysis 8.2
Implementing 50us data acquisition through PCIe card
It can synchronously collect 16 channel signals with a resolution of 16 bits. The data acquisition card is inserted into the PCIe slot of the computer, and the PDAServer collects real-time data from 16 channels every 50us. The real-time data is used for real-time analysis and efficiently compressed into. dat data files for offline analysis.
Figure 8.4 16 bit 16 channel data acquisition card 8.3
Realize 10us/50us data acquisition through USB interface board
It can synchronously collect 5 channels of signals with a resolution of 16 bits. The CPU in the interface board collects data from 5 channels every 10 microseconds and places it in the memory cache. Every millisecond, the data in the cache is sent to the PDA computer through a USB cable. The PDAServer parses the data from each channel according to the storage agreement in the cache for real-time analysis and compresses it into an offline. dat data file. At 50us, 25 channels of data can be collected.
Figure 8.5 16 bit 5-channel data
acquisition board |
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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
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