2-D, large range laser deflection / displacement measuring method and apparatus

A laser displacement and deflection measurement technology, applied in measurement devices, optical devices, instruments, etc., can solve the problems affecting the accuracy of measurement results, measurement failure, large displacement of cable-stayed bridges and suspension bridges, etc. Avoid wobble effects

CN1651855AInactive Publication Date: 2005-08-10CHONGQING YA PAI BRIDGE ENG QUALITY TESTING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2005-08-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to a two-dimension large-range laser displacement / deflection measuring equipment and its measuring method. Said equipment includes laser transmitting portion and two-dimension laser speckle receiving and measuring portion. The laser transmitting portion is formed-form laser and mounting frame, and said laser mounting frame is a variable damping hinge structure, and the two-dimension laser speckle receiving and measuring portion consists of receiving screen, camera and luminous or non-luminous mark. Said invention also provides the concrete steps of its measurement method.
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Description

technical field

[0001] The invention belongs to the intersection field of the field of photoelectric measurement and the state monitoring field of civil infrastructure, and specifically relates to a two-dimensional large-range laser displacement / deflection measurement device and method. technical background

[0002] The vertical and lateral deformation of beams of bridges and other building structures under the action of self-weight and load is called deflection; while the lateral deformation of bridge towers under the action of cables and wind loads is called displacement, which is generally measured by the relative distance between the top of the tower and the base of the tower. The displacement representation of is collectively referred to as displacement below. Displacement can directly reflect the construction quality, bearing capacity, and health of the structure. Therefore, there are strict regulations in the design of bridges, construction qu...

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Embodiment Construction

[0028] The present invention will be further elaborated below in conjunction with accompanying drawing:

[0029] see image 3 , The two-dimensional large-range laser displacement / deflection measurement device is composed of a laser emitting part 6 installed on the structure to be measured 2 and a two-dimensional laser spot receiving and measuring part 7 installed at a certain distance according to the actual situation.

[0030] see Figure 4A , the laser emitting part 6 is composed of a laser 6-5 and a laser installation bracket, and the laser installation bracket is a variable damping hinge structure. The upper part of the variable damping hinge structure includes a hollow mounting seat 6-1 and a spherical shell 6-2, and the interior of the spherical shell is equipped with a variable damping liquid 6-8 (magnetorheological fluid is used here) and a pair of The magnetic pole 6-3 composed of magnetically conductive material and coil, the control line 6-9 of the magnetic pole 6...