A kind of fine aggregate online detection device and method

Abstract

The invention belongs to an online detection device and method of fine aggregates. The device comprises a sampling module, a sample feeding module, a dispersion module, an image acquisition and analysis module and a recycling module, wherein the sampling module is arranged on a fine aggregate conveyor belt and is used for sampling at pre-set frequency and conveying a sample to the sample feeding module; the sample is treated by the dispersion module and then enters an image acquisition region of the image acquisition and analysis module; the image acquisition and analysis module is used for carrying out characteristic extraction on an acquired image to obtain parameters of the fine aggregates; and the recycling module is used for recycling the detected fine aggregates. According to the online detection device and method of the fine aggregates, a two-grade dispersion manner combining inclined vibration quantity-limited feeding with adjustable vibration frequency and uniform dispersion of multilayered baffle buffering is adopted, so that the fine aggregates have relatively good dispersibility when the fine aggregates fall into a measurement region, and furthermore, the image analysis difficulty is reduced; only a classic image processing and analysis algorithm is adopted; and the image processing and analysis algorithm is simple and reliable, and hardware of the device is easy to realize.

Description

Technical field [0001] The invention belongs to the technical field of aggregate quality detection, and specifically relates to an online fine aggregate detection device and method. Background technique [0002] As an important material for infrastructure and urban construction, concrete bears a major responsibility in my country's new urbanization construction. Fine aggregate is the main component of concrete, accounting for about 30%-40% of the total volume of concrete. The current concrete performance problems are largely due to the unqualified quality of fine aggregates, such as poor aggregate shape, poor gradation, large porosity, many needle-like particles, and high stone powder content. Unqualified fine aggregate quality will affect concrete water consumption, cementing material consumption, durability, etc. To ensure the performance of concrete, not only need to improve the level of concrete production equipment, but also need to improve the level of concrete quality co...

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Problems solved by technology

This method obtains piled and overlapping ore image information, and image processing and analysis methods are complex

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