Automatic metering system of roller scale based on weighing controller and method thereof

Abstract

The invention relates to an automatic metering system of a roller scale based on a weighing controller and a method thereof. The automatic metering system comprises a steel billet transportation roller table, a roller scale, a programmable logic controller, a weighing controller, a position switch, a production computer system and a metering computer system. The metering method comprises the following steps: transporting a steel billet to a weighing position, i.e., the transportation roller table above the roller scale; judging information indicating that the steel billet is put in place; starting to weighing by the weighing controller after reception of a weighing request and a steel billet number; judging whether the weighing condition is satisfied or not; and after the metering computersystem receives the steel billet number and weight, carrying out a saving action. Through adoption of the automatic metering system, steel billet metering and complete steel billet information transmission functions can be finished automatically without manual participation; information transmission errors in steel billet metering caused by manual operation errors or untimeliness are avoided, andphysical isolation is realized between a production automation network and a metering network, thereby completely avoiding virus transmission and network attacks between the production network and metering network.

Description

technical field [0001] The invention relates to the field of roller table weighing equipment, in particular to a roller table scale automatic measurement system and method based on a weighing controller. Background technique [0002] Roller scale is a commonly used measuring equipment for on-line measurement of steel billet transported by roller table. It is installed on a straight section of billet roller table. Static weighing is carried out. After the weighing is completed, the steel billet continues to be transported to the next process by the roller table. Due to the difference in billet number and weight, it is necessary to accurately distinguish each billet, determine the billet number, weight and measurement time of the billet, and transmit it to other information systems as a whole for the management and statistical analysis of billet measurement information. Traditionally, the following three technical schemes are adopted: scheme 1, the measurer records the measur...

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Problems solved by technology

[0003] The above methods need to be equipped with a large number of measurers for on-site operation, which is prone to problems such as input errors or inaccurate data confirmation.

At the same time, Plan 2 and Plan 3 need to solve the communication case between the production network and the metering network, and increase additional investment such as firewalls. At the same time, network security cannot be fully guaranteed, and the production automation system is subject to network security threats such as virus attacks.

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