Strain data acquisition device and system based on network camera

Abstract

The invention belongs to the field of optical strain measurement systems, and provides a strain data acquisition device and system based on a network camera. The strain data acquisition device includes: a shell one end of which is open and which is of a structure with a hollow inner cavity; a network camera arranged in the hollow inner cavity of the shell, and through an opening end of the shell, a lens of the network camera being aligned with a metal structural part whose strain data are to be collected; and an annular lamp strip arranged around the lens of the network camera. The strain data acquisition system includes the abovementioned strain data acquisition device, a server and a monitor, wherein the server is connected with the Internet, is in communication connection with the monitor, and is connected with the network camera through the Internet. The problems existing in the field of the prior art that signal transmission distance is limited, installation is complicated, the strain data acquisition device and system are not applicable to a partial area where strain is concentrated and no strain data acquisition device and system that can be repeatedly used exist in the prior art.

Description

technical field [0001] The present invention relates to the technical field of optical strain measurement systems, that is, to a network camera-based strain data acquisition device and system, and in particular to a network camera-based strain data acquisition device and system for metal structural parts. Background technique [0002] At present, the strain state monitoring system of large metal structural parts mainly uses resistance strain gauges or grating sensors to collect strain data. , the sensitive grid of the strain gauge will be deformed accordingly, causing the resistance of the strain gauge to change, and its change rate ΔR / R is proportional to the strain ε of the component where the strain gauge is installed. By measuring the change of this resistance, the strain on the surface of the component and the corresponding stress can be calculated according to the formula. The grating sensor is suitable for welding to various steel structures: such as steel pipes, tun...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a strain data acquisition device and system based on a network camera to solve the problems in the prior art that the signal transmission distance is limited, the installation is complicated, it is not suitable for local areas where the strain is concentrated, and there is no such problem in the prior art. Issues with Reusable Strain Data Devices and Acquisition Systems

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