CN103543680A - Real-time control data collecting system - Google Patents
Real-time control data collecting system Download PDFInfo
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- CN103543680A CN103543680A CN201310519378.8A CN201310519378A CN103543680A CN 103543680 A CN103543680 A CN 103543680A CN 201310519378 A CN201310519378 A CN 201310519378A CN 103543680 A CN103543680 A CN 103543680A
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Abstract
A real-time control data collecting system comprises a data processing device, a bus signal driving card, a data collecting card and a collecting computer. The data processing device, the bus signal driving card, the data collecting card and the collecting computer are connected in sequence. The data processing device is connected with the bus signal driving card through multiple buses I, the bus signal driving card is connected with the data collecting card through a cable, and the data collecting card is connected with the collecting computer through a PCI bus. A reasonable structure is adopted in the real-time control data collecting system, and long-time and large-capacity data collecting can be achieved. In practical use, the real-time control data collecting system is stable and reliable in performance, reasonable in software design and simple in operation, and meets the requirement of a real-time control system for data collection.
Description
Technical field
The present invention relates to a kind of data acquisition system (DAS), be specifically related to a kind of real-time control data acquisition system (DAS).
Background technology
Data processing equipment is the charge computer system of certain real-time control system, it is connected with the numerous equipment in system, can accept operator's order, under the control of software, carry out data processing and the calculating of real-time control system, realize the real-time control to each subsystem.It just because of data processing equipment, is the information hub of this real-time control system, so gather and analyze the duty that can grasp whole system by the data stream in its bus, thereby provide detailed, complete data foundation for the analysis of debugging, maintenance and the various tests of system.
Summary of the invention
The invention provides a kind of real-time control data acquisition system (DAS), it has adopted rational framework, can realize long-time, jumbo data acquisition.Stable performance in actual use, reliable, Software for Design is reasonable, simple to operate, has met the requirement of this real-time control system to data acquisition.
Technical solution of the present invention is:
A control data acquisition system (DAS), its special character is: comprise the data processing equipment, bus signals driver card, data collecting card and the collecting computer that connect successively; Described data processing equipment is connected by multibus I with bus signals driver card, and described bus signals driver card is connected by cable with data collecting card, and described data collecting card is connected by pci bus with collecting computer.
The bus signals of above-mentioned data processing equipment, after driving, is delivered to data collecting card with cable with electric current ring type electric interfaces.
Above-mentioned cable is Shielded Twisted Pair; Described collecting computer is IBM-PC series and compatible microcomputer mutually.
The invention has the advantages that: adopted rational framework, can realize long-time, jumbo data acquisition.Stable performance in actual use, reliable, Software for Design is reasonable, simple to operate, has met the requirement of this real-time control system to data acquisition.
Accompanying drawing explanation
Fig. 1 is principle of the invention block diagram.
Embodiment
Referring to Fig. 1, a kind of real-time control data acquisition system (DAS), comprises the data processing equipment, bus signals driver card, data collecting card and the collecting computer that connect successively; Described data processing equipment is connected by multibus I with bus signals driver card, and described bus signals driver card is connected by cable with data collecting card, and described data collecting card is connected by pci bus with collecting computer.
The bus signals of data processing equipment, after driving, is delivered to data collecting card with cable with electric current ring type electric interfaces.
Cable is Shielded Twisted Pair; Described collecting computer is IBM-PC series and compatible microcomputer mutually.
Data collecting card forms part of data acquisition with plug-in card form by pci bus and collecting computer.The information of acquisition and recording comprises the timing signal that data analysis is used that is mainly producing from data-signal, address signal and the data collecting card of data processing equipment transmission itself.The bus signals of data processing equipment after capture card, prevents signal reflex by prolonging distribution resistance through cable, then through photoelectrical coupler, carries out isolation coupling, to prevent the common mode interference between data processing equipment and data acquisition board.Like this, logically, the circuit before photoelectrical coupler forms signal input circuit, and the circuit after photoelectrical coupler is data acquisition circuit; Physically, photoelectrical coupler is kept apart input circuit and data acquisition circuit, has improved reliability.
The bus signals of data processing equipment is through after photoelectric coupling, data collecting card is analyzed address bus signal wherein, by logic control circuit, selected to need the address realm of collection, and come image data and address bus signal according to the reading and writing signal in control bus, when to be data processing equipment carry out read-write operation to the I/O address in address realm or storage address, data collecting card also utilizes the information on this operation handlebar data bus and address bus to write the FIFO of oneself simultaneously, and stamps markers for every information.Meanwhile, data collecting card utilizes the status signal of FIFO to carry out logical combination, to collecting computer, send dma request signal, notification data can be used, then collecting computer responding DMA request, start data to read in the internal memory of oneself, the form deposit with file by the data of internal memory after a DMA is transmitted, and initialization DMA transmission next time again.
The present invention, owing to having adopted rational framework, can realize long-time, jumbo data acquisition.Stable performance in actual use, reliable, Software for Design is reasonable, simple to operate, has met the requirement of this real-time control system to data acquisition.
Claims (3)
1. control in real time a data acquisition system (DAS), it is characterized in that: comprise the data processing equipment, bus signals driver card, data collecting card and the collecting computer that connect successively; Described data processing equipment is connected by multibus I with bus signals driver card, and described bus signals driver card is connected by cable with data collecting card, and described data collecting card is connected by pci bus with collecting computer.
2. control in real time according to claim 1 data acquisition system (DAS), it is characterized in that: the bus signals of described data processing equipment, after driving, is delivered to data collecting card with cable with electric current ring type electric interfaces.
3. according to controlling in real time data acquisition system (DAS) described in claim 1 or 2, it is characterized in that: described cable is Shielded Twisted Pair; Described collecting computer is IBM-PC series and compatible microcomputer mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310519378.8A CN103543680A (en) | 2013-10-29 | 2013-10-29 | Real-time control data collecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310519378.8A CN103543680A (en) | 2013-10-29 | 2013-10-29 | Real-time control data collecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103543680A true CN103543680A (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201310519378.8A Pending CN103543680A (en) | 2013-10-29 | 2013-10-29 | Real-time control data collecting system |
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| CN (1) | CN103543680A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110997448A (en) * | 2017-08-08 | 2020-04-10 | 莱尔诺瓦公司 | Cable assembly for accessing data from a field bus in a railway vehicle |
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2013
- 2013-10-29 CN CN201310519378.8A patent/CN103543680A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110997448A (en) * | 2017-08-08 | 2020-04-10 | 莱尔诺瓦公司 | Cable assembly for accessing data from a field bus in a railway vehicle |
| US11136052B2 (en) | 2017-08-08 | 2021-10-05 | Railnova Sa | Cable assembly for providing a data acquisition system with data messages passing on a fieldbus of rolling stock |
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