Contact type rolling machine integrated compaction sound wave detection system and method

Abstract

A contact type rolling machine integrated compaction sound wave detection system comprises a sound emission sensor, an industrial personal computer, a data acquisition instrument, a GPS / BDS receiver and the like, when a filling layer is rolled, a sound wave field time domain signal formed near the rolling layer is received by the sound emission sensor vertically installed on a support directly connected with a vibration wheel, and a sound wave field digital signal is formed through sampling; meanwhile, the GPS / BDS receiver provides a space signal related to a rolling position, filtering and spectral analysis are carried out on the sampled sound wave signal, an effective sound signal harmonic amplitude is obtained, a contact type sound compaction index is established according to the correlation between the amplitude ratio and the compaction degree of the filling material, and a space-time compactness distribution diagram of a rolling area is displayed on an airborne display in combination with GPS space position information. The system has the advantages of being accurate, continuous, real-time, small in discreteness, low in cost and the like and is suitable for continuous compaction quality control of filling materials, and the intelligent continuous compaction function can be easily achieved by controlling operation parameters of the rolling machine through compaction degree feedback.

Description

technical field [0001] The invention belongs to the technical field of filling compaction quality detection, can be used for fast and non-destructive detection of filling quality, and particularly relates to a contact roller compaction integrated sound wave detection system and method. Background technique [0002] With the construction of global highways, railways, airports, buildings, bridges, reservoirs and dams, more and more roadbeds, dam foundations or dam bodies are filled with soil, asphalt mixture, earth-rock mixture or other The compactness of the filling material is an important index to control the filling quality of the filling material. It directly affects the strength and stability of the filling body, and affects the performance and service life of the filling body. Therefore, domestic and foreign Researchers have proposed and developed many testing equipment and technologies for the filling quality of roadbed, dam foundation or dam body filling materials. ...

AI Technical Summary

Problems solved by technology

The present invention conducts rapid non-destructive detection on the compaction degree of the filling material based on the contact acoustic method, realizes the acquisition of the acoustic signal emitted from the filling material during the vibration compaction process of the roller compactor through the sound signal acquisition device, and then utilizes the airborne The industrial computer performs spectrum analysis and processing on the collected effective acoustic signals to obtain the contact acoustic compaction index, which has a strong correlation with the compaction degree of the filling material and can effectively characterize the compaction effect of the filling material. The data can be real-time Stored on the airborne industrial computer, it can also be transmitted to the remote monitoring device in real time, which is convenient for data access and online monitoring and analysis, which can effectively solve the problems of large dispersion, low precision, low efficiency, and detection To solve problems such as complex equipment or system structure and high price, realize non-destructive, accurate, low-cost and high-efficiency measurement of packing material compaction

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