Control system for stabilized soil mixing station

Abstract

The invention discloses a control system for a stabilized soil mixing station. The control system comprises an aggregate supplying module, a stabilizer supplying module, a clear water supplying module, a mixer, a control module for controlling the supplying quantities of the aggregate supplying module, the stabilizer supplying module and the clear water supplying module, and an HMI human-machine interface. The aggregate supplying module, the stabilizer supplying module, the clear water supplying module and the HMI human-machine interface are in electric connection with the control module through a PROFINET field bus. The control system for the stabilized soil mixing station has the beneficial effects that the communication rate, the response speed and control accuracy of the system are high, the starting-up waste rate can be effectively decreased, and the quality of stabilized soil can be promoted.

Description

technical field [0001] The invention relates to the technical field of the electric control system of a mixing plant, in particular to a control system of a stabilized soil mixing plant. Background technique [0002] Stabilized soil is mainly composed of aggregate (such as slag, lime, sand, gravel), cement and water, etc., and the stabilized soil mixing station is specially used to mix and stir these raw materials in a certain proportion to form a hydraulic The material is the mixing system of the stable mixture of the binder, which is widely used in the construction of the grassroots and bottom layers in the construction of highways and urban roads, freight yards, parking lots, aviation airports and other projects. [0003] Traditional stabilized soil mixing plants generally use MODBUS (or high-speed pulse) communication to control the mixing of stabilized soil, controlling the frequency of the driver and the speed of the motor, which has the following defects: low communic...

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Problems solved by technology

[0003] Traditional stabilized soil mixing plants generally use MODBUS (or high-speed pulse) communication to control the mixing of stabilized soil, controlling the frequency of the driver and the speed of the motor, which has the following defects: low communication rate, poor real-time performance of the system, resulting in low control accuracy ( Often it can only reach about 2%); 2) The dynamic response of the system is poor, and it takes a long time to achieve a stable ratio when starting up, resulting in a high waste rate when starting up; 3) The belt scale has a large starting current, which is easy to be stuck and skipped stream failure

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