High-speed acquisition method and system of industrial process data

Abstract

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 anddata 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 an information collection method and system, 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 due to the fact that different manufacturers, different types, and different models of controllers use almost different data access formats, and are limited by traditional data access methods, even in the high-speed industrial field Data acquisition is still mainly done through the hardware acquisition card. At present, there are the following problems in the development of high-speed data acquisition systems using special 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 ...

AI Technical Summary

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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