A capture device for bridge load conditions

Abstract

The invention discloses a snapshot device for load case of a bridge. The snapshot device comprises a GPS (Global Position System), a wireless transmission terminal, an image recording system, a load parameter sensor and a data processing and controlling system, wherein the data processing and controlling system comprises a time base unit, a time source data fusion unit, a data processing unit and a trigger pulse output unit. The snapshot device is capable of collecting and analyzing signals of an outside deflection sensor, a strain sensor and a vibrating sensor, judging thresholds of the signals, determining whether the bridge dynamically deforms, outputting trigger signals according to results, driving the image recording system to work and guaranteeing reasonable monitoring of the dynamic deformation of the bridge. The snapshot device has the effects of saving data resource and reducing the wireless data transmission and the pressure of data storage and backup.

Description

Technical field [0001] The invention belongs to the technical field of mechanics measurement, and relates to a displacement and deformation measurement technology that can be used for bridges, dams, structural parts and other targets, in particular to a real-time image recording device for bridge working condition deformation. Background technique [0002] The deformation of bridges, dams, structural parts and other objects mainly includes static deformation and dynamic deformation. Static deformation refers to the deformation of the foundation that changes slowly, such as subsidence, inclination and stress relaxation, and dynamic deformation refers to the deformation due to wind, temperature, earthquake and traffic load. The parameter monitoring of the short-term deformation caused by it plays an important role in the safety assessment and analysis of the target. Many countries in the world have invested a lot of manpower and material resources in the research of bridge deformat...

AI Technical Summary

Problems solved by technology

[0004] However, there are the following problems in practical applications: (1) It is difficult to accurately synchronize the real-time image recording data with other sensor data, which brings difficulties to the subsequent data processing and analysis; (2) The monitoring of bridge deformation is a long-term behavior, while the image real-time Recording will generate a large amount of data, which will put pressure on subsequent data storage and data transmission. There is an urgent need for a device that can not only satisfy the whole process of dynamic large-scale deformation recording, but also save data resources.

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