Telescope all-weather self-calibrating deflection/displacement measuring device and method

Abstract

A self-calibration device of deflection / displacement in telescopic and all- weather type front end of camera shooting equipment and connecting it to computer through interface, using light box with patterned lines being scaled accurately as target, applying black being not lightened as basic color of light box and applying white being lightened as patterned lines, using diffuse reflection water proof film as surface of target and setting scattered light source being controlled by light controller in light box.

Description

technical field [0001] The invention relates to a displacement and deflection detection and monitoring device and method for detecting and monitoring bridge deflection, ground subsidence, landslide, building sinking or movement, especially a deflection and displacement measurement device and a method using a telescopic device and an image method. method. Background technique [0002] Detecting bridge deflection and displacement plays an important role in modern road and bridge health detection and monitoring. In the prior art, most of the devices and methods used to detect and monitor bridge deflection and mountain movement cannot be self-calibrated, and cumbersome manual calibration must be performed before each measurement. For example, a "self-calibration self-encoding imaging method multi-point dynamic deflection / displacement measurement device" disclosed in Chinese patent 200510020324.2, although it has a self-calibration function, when performing deflection / displaceme...

AI Technical Summary

Problems solved by technology

In the prior art, most of the devices and methods used to detect and monitor bridge deflection and mountain movement cannot be self-calibrated, and cumbersome manual calibration must be performed before each measurement

For example, a "self-calibration self-encoding imaging method multi-point dynamic deflection / displacement measurement device" disclosed in Chinese patent 200510020324.2, although it has a self-calibration function, when performing deflection / displacement measurement, due to the wide measurement range, the measurement accuracy will be very high Low, unable to meet the requirements of high precision, and can only work in low-light environments

Another example is the photoelectric liquid connecting pipe method, which can also detect bridge deflection, but it is greatly affected by temperature, and it cannot achieve all-weather measurement

Another example is the 200510020375.5 "two-dimensional, large-scale laser deflection / displacement measurement method and device" disclosed in the Chinese patent. By controlling the controllable damping hinge structure, the laser beam reflecting the position of the measured structure is horizontally irradiated on the spot receiving and measuring device to form a spot , the spot and mark are imaged by the camera equipment, and then the relative distance between the center of gravity position of the laser spot and the light-emitting diode image is calculated to obtain the coordinates of the current spot, and the initial value is subtracted from the coordinates to obtain the displacement value of the current spot, and the measured The two-dimensional displacement of the structure, the laser beam of the device can only be shot horizontally on the spot receiving and measuring device, so the laser transmitter and the spot receiving and measuring device must be on the same horizontal line, which cannot be used for sites with inclination angles, the range of installation and use Limited, even if it is installed on a horizontal plane, the laser beam is required to be completely horizontal to the light spot, and it is difficult to debug and operate the receiving and measuring device

[0003] As mentioned above, the existing displacement / deflection detection and monitoring devices either have a limited range of use, or are not accurate enough, or cannot complete all-weather work, which seriously restricts their ability to detect and monitor bridge deflection, ground subsidence, mountain movement, building subsidence and Real promotion and application in mobile etc.

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