Material metering control method and material metering control device

Abstract

The invention relates to a material metering control method and a material metering control device. The material metering control method comprises the following steps: starting metering: starting a material bin metering door, guiding the material in a material bin to fall onto a metering scale and starting recording the metering time (t); confirming the time of closing the material bin metering door: according to a required target material weight (mB), utilizing a PLC (programmable logic controller) to calculate and confirm the time (tA) of closing the material bin metering door and the weight (mA) of the material in the scale at the moment by utilizing a linear or nonlinear regression method; and closing the material bin metering door: closing the material bin metering door when the metering time reaches the time tA or the weight of the material in the scale is equal to mA. According to the material metering control method and material metering control device provided by the invention, the mechanical structure of the metering scale is simplified and the metering precision and metering efficiency of a metering system are efficiently increased.

Description

technical field [0001] The invention relates to a material measurement control method and a material measurement control device in the construction machinery industry. Background technique [0002] In the construction machinery industry, the metering and mixing of materials (ie raw materials) are used in many places. Especially in cement concrete, asphalt concrete and other industries, it is necessary to accurately measure materials, and then achieve mixing to produce qualified finished materials. [0003] At present, from the analysis of the metering control devices used in the construction machinery industry, there are mainly two methods for material metering devices and their metering control methods: adding and subtracting methods. The main structural form of the additive weighing method is to set a weighing scale under the material bin. After the control system gives the material metering signal, the metering door of the material bin will automatically open and the mat...

AI Technical Summary

Problems solved by technology

[0007] The problem to be solved by the present invention is to design a new material measurement control method and its material measurement control device for the shortcomings of the traditional adding and subtracting methods, so as to overcome the need to manually input and drop when adding and weighing. The shortcomings of improving the accuracy by using the material difference, effectively avoiding the time delay and complicated mechanism caused by the secondary measurement (ingredients) by the subtraction method, and improving the measurement accuracy

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