A method and system for on-board detection of compaction degree based on big data

Abstract

The invention discloses a big data-based compaction degree vehicle-accompanying detection method. The big data-based compaction degree vehicle-accompanying detection method comprises the following steps: S01, acquiring an accelerated speed signal of a vibrating wheel in soil and performing AD conversion to convert a charge signal into a digital signal; S02, performing Fourier transformation on the digital signal to form a frequency domain signal; S03, uploading the current data of a compaction object together with position information to a cloud platform to store; S04, performing matched calculation on real-time uploaded data and a data sample library, and outputting the compaction degree of sample data to serve as pavement compaction degree of real-time acquired data, wherein the sample data with highest matched relevancy serves as the current reference data; S05, transmitting the compaction degree obtained by calculation to a bicycle system; and S06, displaying compaction degree information by the bicycle system. The invention also provides a vehicle-accompanying detection system comprising a vibrating sensor, a special controller, a data terminal, a display, a cloud server and a cloud calculation host. According to the big data-based compaction degree vehicle-accompanying detection method and the big data-based compaction degree vehicle-accompanying detection system, which are provided by the invention, vehicle-accompanying detection on the compaction degree can be realized, the compaction information can be stored in real time, and the accuracy of the output result can be improved.

Description

technical field [0001] The invention relates to a method and system for on-board detection of compaction degree based on big data. Background technique [0002] Today's social urbanization is in a stage of great strides, and people's requirements for road laying have reached an unprecedented height, both in terms of quality and quantity. The compaction of embankments, subgrades, and base materials is critical to the performance of highway pavements and accounts for a significant portion of the nation's highway construction budget. The diversity of soil materials, equipment and operator variability, and varying moisture content make the required earth compaction difficult to achieve. Current quality control and volume assurance testing devices are typically used to evaluate less than 1% of the actual compacted area. [0003] Traditional methods of checking compactness, such as ring knife method, sand filling method, water soaking method, etc. The soil is sampled and inspec...

AI Technical Summary

Problems solved by technology

[0004] Since the 1970s, several on-vehicle detection devices have come out successively, such as in the world patent W082 / 01905 and the Swedish patent SE424455. The index of the degree of compaction is the dimensionless harmonic ratio, that is, the compaction value CMV. The algorithm later proved to have no universal application value

So far, all the main engine manufacturers have designed their own on-board compaction monitoring devices and algorithms, but there are deficiencies in the methods of compaction monitoring and they are not universal

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