Asphalt mixing plant aggregate gradation online detection and overflowing prevention control method and system

Abstract

The invention provides an asphalt mixing plant aggregate gradation online detection and overflowing prevention control method and system. The system comprises a plurality of feeding bins, a pluralityof aggregate conveying belts, terminal equipment, a PLC controller, a frequency converter and a plurality of motors, wherein the quantities of the feeding bins, aggregate conveying belts and motors are the same; an aggregate conveying belt is arranged under each feeding bin; a camera obscura is fixedly arranged on a guide rail of each aggregate conveying belt; light equipment is arranged in the camera obscura; an image collector is arranged at the top of the camera obscura; the terminal equipment is connected with the image collector, so as to receive and process collected images; the terminalequipment is connected with the PLC controller, so as to send a velocity ratio required to be achieved by each aggregate conveying belt; the PLC controller is connected with the frequency converter;the frequency converter is connected with all the motors; each motor is connected with an aggregate conveying belt, so as to perform speed control. The system can ensure that aggregate gradation is qualified and matching requirements are met, and can effectively prevent the phenomenon of overflowing during asphalt mixing.

Description

technical field [0001] The invention relates to the field of detection technology and the field of construction machinery, in particular to an on-line detection of aggregate gradation in an asphalt mixing plant and an anti-overflow control method and system. Background technique [0002] The quality of the asphalt mixing plant is a key factor affecting the quality of the project. The overflow problem is a serious problem often encountered in the production of mixing plants, and it is also an important factor restricting the construction progress and construction quality. If the overflow phenomenon is slight, the overflow material will be wasted, which will increase energy consumption and reduce production; if the overflow phenomenon is serious, it will cause intermittent shutdown and ignition of the mixing plant, which will affect stable production and paving on the one hand, especially the intermittent paver Downtime affects the smoothness, and on the other hand affects th...

AI Technical Summary

Problems solved by technology

[0006] However, the current concrete aggregate detection equipment has many problems, such as time-consuming and laborious, only sampling detection, and cannot truly reflect the particle size detection data of aggregates under actual operating conditions.

Moreover, there is often a time lag between the test results of the samples and the actual production status of the concrete aggregate, making online testing impossible

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