Portable dynamic deflection displacement measuring device and method

Abstract

The invention relates to the technical field of intelligent information measurement, in particular to portable dynamic deflection displacement measuring device and method. The portable dynamic deflection displacement measuring device comprises a laser projection unit and an optical signal acquisition processing unit, wherein the laser projection unit consists of a laser power control circuit, a laser launcher and a first cell, and the laser power control circuit and the first cell are respectively and electrically connected with the laser launcher; and the optical signal acquisition processing unit consists of an optical signal imaging screen, a cameral lens, a CCD (Charge Coupled Device) sensor, a mainboard, a display touch control screen and a second cell, the optical signal imaging screen faces to the laser launcher and is coaxially arranged with the laser launcher, and the optical signal imaging screen is parallel to a plane of the CCD sensor and is coaxial to the camera lens and the central axis of the sensor. The invention adopts a portable design, does not need an external computer, is supplied with power by independent cells and is convenient for field survey and carrying; an imaging screen can be disassembled and calibrated independently, which is convenient for range selection and deformation verification; and through an integral design, all measurement functions can be achieved without an external keyboard or a mouse.

Description

technical field [0001] The invention relates to the technical field of intelligent information measurement, in particular to a portable dynamic deflection displacement measurement device and method. Background technique [0002] The vertical and lateral deformation of bridges, buildings, highways and other building structures under the action of self-weight and load is called deflection. Deflection / displacement can directly reflect the construction quality, bearing capacity, and health of the structure, so there are strict regulations in various links such as building design, construction quality control, completion acceptance, and remaining life assessment. Therefore, during the construction process, completion acceptance, and service period of bridges and other building structures, monitoring deformation parameters such as deflection and displacement is of great significance for mastering their construction quality, understanding their health status, and realizing early wa...

AI Technical Summary

Problems solved by technology

The measurement range of direct optical imaging is very limited, or a telescope is needed, or a baseline is needed to transfer measurement changes, which will bring about no change in installation measurement; now some long-span bridges have a main span of more than 500 meters , the distance between the fixed point (main tower, base) and the deflection point (mid-span) varies greatly, which puts forward higher requirements for the measurement range and laser source; the speed of deflection / displacement measurement based on photoelectric type is limited by the acquisition speed and transmission speed (between the sensor and the computer), the measurement accuracy is affected by the resolution of the sensor, these indicators are fully reflected in the existing published patents

[0006] As mentioned above, the existing deflection measurement devices and methods cannot fully meet the requirements of portable, wide range, large range, high speed, and dynamic measurement, which seriously restricts their use in measuring dynamic deflection and displacement of bridges, buildings, land subsidence, and roads, etc. real promotion and application

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