Enhanced non-contact plumb line coordinator

Abstract

The invention provides an enhanced non-contact plumb line coordinator. The enhanced non-contact plumb line coordinator comprises a collimated light source, a plumb line, a CCD (charge coupled device) sensor and a light filter, wherein the plumb line is fixed on a to-be-detected object; the collimated light source and the CCD sensor are arranged on two opposite sides of the plumb line respectively; the light filter is arranged between the CCD sensor and the plumb line; the collimated light source is used for outputting collimated light; the light filter is used for transmitting collimated light output by the collimated light source and filtering natural light coming from the outside; the CCD sensor is used for receiving the collimated light output by the collimated light source and transmitted through the light filter. By the enhanced non-contact plumb line coordinator, the interference of an outside light source on the non-contact plumb line coordinator can be effectively avoided, so that the non-contact plumb line coordinator can normally work in an optical environment which is not directly irradiated by sunlight or even all-black.

Description

technical field [0001] The application relates to the field of structure monitoring in civil engineering, in particular to an enhanced non-contact vertical coordinate instrument, which is suitable for monitoring horizontal displacement and tilt deformation of civil engineering structures such as various large buildings. Background technique [0002] Displacement and deformation monitoring of civil engineering structures are common and important monitoring items in civil engineering safety monitoring. For example, in the actual application environment, it is usually necessary to detect whether the structure of buildings such as roofs and bridge decks has changed after a period of time and the amount of change, so quantitative data is generally required. Therefore, a vertical line can be suspended vertically under the roof or bridge deck to be tested, and the vertical line will point to a specific point after it stops. When the vertical line is set, mark the initial point poin...

AI Technical Summary

Problems solved by technology

Therefore, the non-contact vertical line coordinate instrument in the prior art generally divides the projection of the vertical line on the CCD sensor into multiple gray levels, and then analyzes and calculates the projection of the vertical line according to different gray levels, and processes The process is also cumbersome and time-consuming, which reduces the scanning speed of the CCD sensor and increases the cost of the non-contact vertical line coordinate instrument

Images