Long-distance concentrated automatic metering system and method adopting belt weighers in large region

Abstract

The invention relates to a long-distance concentrated automatic metering system and method adopting belt weighers in a large region. The long-distance concentrated automatic metering system comprises a serial server, a metering computer and multiple belt weighers, wherein a weighing meter of each belt weigher is connected with the serial server through optical fibers, the serial server is connected with the metering computer through the network, the metering computer, the serial server and the weighing meters of the belt weighers constitute an RS-485 bus control network, the metering computer is used for reading instantaneous weight, cumulative weight and belt operating speed of each weighing meter according to a set acquisition time point, calculating weight data of materials transported by the belt weighers in a corresponding time period and issuing a command signal to be transmitted to the weighing meter of each belt weigher through the serial server, and long-distance monitoring for the belt weighers is realized. According to the system and the method, the metering data is accurate, unified management for the multiple metering belt weighers in the large region is realized, the data is uploaded and shared in time, and an anti-cheating function of weighing equipment is realized in terms of hardware of the system.

Description

technical field [0001] The invention relates to the field of automatic measurement of belt scales, in particular to a remote centralized automatic measurement system and method of belt scales in a large area. Background technique [0002] For a long time, a large number of belt scales have been used between various processes (such as stock yard, coking, sintering, pelletizing) and within each process in the pre-iron system of large iron and steel enterprises. The measurement of materials between processes provides important measurement data for process cost accounting and product quality improvement. However, for a long time, the measurement belt scales in various iron and steel industries often use the 4-20mA instantaneous weight current signal from the weighing instrument to enter the PLC controller, and calculate the weight of the material carried by the belt scale through the integration program in the PLC controller. Cumulative weight. In fact, it is inaccurate to cal...

AI Technical Summary

Problems solved by technology

There are two main problems with this method: first, the measurement data is inaccurate, and the integral weight in the PLC is far from the weight data in the weighing instrument; There is a serious cheating behavior by modifying measurement data between processes, which not only affects the cost accounting between processes, but also seriously affects the improvement of product quality in each process, which is very unfavorable to production

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