Signal acquisition device for knocking scanning-type bridge damage detection

Abstract

The invention discloses a signal acquisition device for knocking scanning-type bridge damage detection. The signal acquisition device comprises a mobile trolley which can move on a bridge needing to be detected, a signal acquisition device which is arranged on the mobile trolley and is used for acquisition of a knocking load response signal transmitted to the mobile trolley from the bridge needing to be detected, and a signal collection device which is connected to the signal acquisition device and is used for collecting the response signal acquired by the signal acquisition device. The signal acquisition device for knocking scanning-type bridge damage detection can realize comprehensive, real-time, effective and accurate acquisition of the bridge response signal thereby satisfying knocking scanning-type bridge damage detection requirements.

Description

technical field [0001] The invention relates to a signal acquisition system, in particular to a signal acquisition device for tapping and scanning bridge damage detection. Background technique [0002] With the advancement of science and technology and the improvement of transportation demand, the number of bridges for various highways and rail transits has increased rapidly. During the use of these bridges, they are constantly eroded by external environments such as temperature changes, strong winds, and rainfall. At the same time, they are eroded by vehicles The long-term repeated action of load and vehicle impact, and some bridges will also be damaged by natural disasters such as floods and earthquakes. With the increase of service life, bridges generally experience different degrees of fatigue effects and aging phenomena. External damage has caused many bridges to become dangerous bridges in a certain sense. There have been a large number of collapse instances of bridges...

AI Technical Summary

Problems solved by technology

In addition, in order to obtain high-precision detection results, the signal acquisition must be accurate to ensure that the collected signals are valuable and real bridge response signals. However, due to the complex and diverse surface conditions of the bridge, it is difficult to achieve the ideal surrounding environment during actual detection. state, various interference noises may seriously affect the signal acquisition results

[0006] In addition, the existing detection methods often need to interrupt bridge traffic, otherwise the noise of other traffic vehicles will cause serious interference, that is to say, the transport capacity of the bridge will be zero during the detection period, which will cause serious loss of transport capacity and cause serious damage to local traffic. Therefore, how to accurately detect the bridge without interrupting the bridge traffic without being disturbed by the surrounding traffic noise has always been a technical problem in this technical field

[0007] In summary, the existing signal acquisition devices are far from meeting the requirements, and it is necessary to develop a signal acquisition device that has been precisely researched and designed to fill the technical gap

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