Multi-point displacement/deflection detection and monitoring device and method

Abstract

A detection device of multiple displacement / deflection is prepared as setting projection target at lens end of shooting equipment, sticking film with accurate scale on back of projection target, setting n numbers of leaser emitters separately at each point to be detected and aiming them to projection target for forming light spot used on shooting equipment detection through face plate.

Description

technical field [0001] The invention relates to a displacement or deflection detection and monitoring device and monitoring method for detecting and monitoring bridge deflection, ground subsidence, building subsidence and movement, especially a device and method for measuring displacement or deflection by using a laser light source. Background technique [0002] Detecting bridge deflection, ground subsidence, mountain movement, building sinking and movement plays an important role in modern roads and bridges and buildings. In the prior art, most of the devices and methods for detecting and monitoring bridge deflection and mountain movement can only measure a single point, but cannot simultaneously measure the displacement or deflection of multiple points. For example, the most typical photoelectric measurement method based on the imaging principle is to fix a luminous target on the measured point, and the imaging lens of the photoelectric camera system images the luminous ta...

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Problems solved by technology

Another example is the "displacement / deflection detection and monitoring device and method" disclosed in Chinese patent 200310057473.6. These devices and methods can only measure one-to-one, and cannot use one camera to photograph and measure multiple targets, thus greatly increasing the cost of measurement

Another example is the "self-calibration self-encoding imaging method multi-point dynamic deflection / displacement measuring device" disclosed in Chinese patent 200510020324.2. The measurement range is very wide, and the measurement accuracy will be very low, which cannot meet the requirements of high precision

[0003] As mentioned above, the existing measurement methods either have a limited range of use or insufficient accuracy, which seriously restricts their real promotion and application in the detection and monitoring of bridge deflection, ground subsidence, mountain movement, building sinking and movement, etc.

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