High-speed acquisition method and system of industrial process data
A data acquisition system and data acquisition technology, which are applied in general control systems, control/regulation systems, program control, etc., can solve the problems of difficult access to cards, no open protocols, and increased investment in enterprises, so as to achieve convenient processing and reception, The effect of increasing speed and reducing investment
Active Publication Date: 2009-09-23
CISDI ENG CO LTD +1
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Problems solved by technology
At present, there are the following problems in the development of high-speed data acquisition systems using dedicated acquisition cards in China: there are many types of controllers, and although the backplane bus is standard, the protocols are not open, and it is very difficult to design corresponding access cards
The bus medium between the controller and the data acquisition server generally uses optical fiber, but the data transmission protocol is generally dedicated to each company. If the signals of multiple controllers are to be collected to the server, multiple separate links need to be erected separately, which increases the The investment of the enterprise, and the existing hardware resources of the enterprise are not fully utilized
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[0019] The following is a further description of the present invention in conjunction with the drawings:
[0020] An industrial process data collection method, such as figure 1 As shown, including the following steps:
[0021] The data acquisition server establishes a connection with the controller, checks the status of the controller, and obtains the information in the controller;
[0022] If you need to configure each parameter of the data collection server, configure each parameter;
[0023] Collect data from the controller to form a data collection file.
[0024] Specifically, the above steps can be refined into the following steps:
[0025] system initialization;
[0026] Check whether the system configuration file exists, if it exists, read the system configuration information and channel configuration information, otherwise create the system configuration file.
[0027] After the connection is established, the data acquisition server sends an inquiry message to the control...
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The invention discloses an acquisition method and system of industrial process data. The method comprises the following steps of: establishing connection with a controller, checking the status of the controller and acquiring information in the controller by a data acquisition server; configuring each parameter of the data acquisition server if needed; and acquiring the data of the controller to form a data acquisition file. The system comprises the data acquisition server, the controller and a communication link between the data acquisition server and the controller. The data information acquired by the controller sends the data to the data acquisition server through the communication link by an Ethernet interface; and the data sent by the controller includes two parts: header segment and data volume, the header segment accounts for four bytes, and the length of the data is constant. The communications link uses Ethernet protocol for communication. The invention utilizes the existing network to work, makes full use of the existing hardware resources, and reduces the system investment.
Description
Technical field [0001] The invention relates to a method and system for information collection, in particular to a method and system for industrial process data collection. Background technique [0002] Network technology has penetrated into various fields of industrial control, but because controllers of different manufacturers, types and models almost use different data access formats, and are constrained by traditional data access methods, as well as high-speed industrial sites Data acquisition is still mainly done through hardware acquisition cards. At present, the domestic use of dedicated acquisition cards to develop high-speed data acquisition systems has the following problems: There are many types of controllers, although the backplane bus is standard, the protocols are not open, and it is very difficult to design corresponding access cards. The bus medium between the controller and the data acquisition server is generally optical fiber, but the data transmission protoco...
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IPC IPC(8): G05B19/048
Inventor 刘安平彭燕华
Owner CISDI ENG CO LTD