A hot-rolled ribbed steel bar data polling wireless transmission system and method thereof

Abstract

The invention discloses a hot-rolled ribbed steel bar data polling wireless transmission system and a method thereof. The system comprises an upper computer, central control equipment and terminal equipment. The upper computer is connected with the central control equipment through an RS232 / 485 bus and the central control equipment is used for receiving production batch numbers of hot-rolled ribbed steel bars, wherein the production batch numbers are transmitted by the upper computer and need maintaining, and then the production batch numbers are transmitted to the hand-held terminal equipment through the wireless communication technology. A user types in on-site basic information through the hand-held terminal equipment and completes the maintenance of the data of the production batch numbers. Based on the polling control technology, the central control equipment is in wireless communication with the hand-held terminal equipment at fixed time, obtains the information of maintained batch numbers and then uploads the information to the upper computer for use of other application systems. The system and the method solve the problem that wired network cabling is difficult to achieve, and reduce the cost of project implementation. In addition, a 'handshaking-connection-transmission-response' mode is adopted in data transmission, and data verification is carried out in each step of transmission, and therefore the accuracy of data is effectively guaranteed.

Description

technical field [0001] The invention belongs to the field of computer application technology, and in particular relates to a hot-rolled ribbed steel bar data polling wireless transmission system and its method, the principle of which is to wirelessly transmit the hot-rolled ribbed steel bar data collected by a handheld terminal device to the central control device, and then transmitted from the central control device to the host computer. Background technique [0002] At present, the collection and transmission methods of basic information data in the production process of hot-rolled ribbed steel bars in iron and steel enterprises are mainly based on wired LAN communication technology and C / S (client / server) architecture mode. Collected by industrial control system. This processing method mainly has the following disadvantages: (1) Due to the complexity of the production site environment, the wiring of the wired network is very difficult, sometimes even impossible, and the ...

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Problems solved by technology

This processing method mainly has the following disadvantages: (1) Due to the complexity of the production site environment, the wiring of the wired network is very difficult, sometimes even impossible, and the wiring of the wired network is expensive and the maintenance workload is relatively large; (2) In the C / S (client / server) architecture mode, manual data entry is adopted, the correctness of the data cannot be effectively verified, and human entry errors will inevitably occur; (3) manual fixed-point entry method will inevitably lead to There is a certain lag in the data; (4) The way the client is collected from the industrial control system, after the system is connected to the industrial control network, brings certain security risks; at the same time, the industrial control system does not store some non-production process information (such as standards) , leading to incomplete data information collected

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