CN100390498C - Apparatus and method for detecting and monitoring displacement/deflection - Google Patents
Apparatus and method for detecting and monitoring displacement/deflection Download PDFInfo
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- CN100390498C CN100390498C CNB2005100574736A CN200510057473A CN100390498C CN 100390498 C CN100390498 C CN 100390498C CN B2005100574736 A CNB2005100574736 A CN B2005100574736A CN 200510057473 A CN200510057473 A CN 200510057473A CN 100390498 C CN100390498 C CN 100390498C
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- 238000005259 measurement Methods 0.000 description 6
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Abstract
The present invention discloses a device and a method of detecting and monitoring displacement and deflection. The device comprises a laser emitter, a reception processing device and a computer in which software is arranged in advance, wherein the reception processing device is composed of camera shooting equipment and a projection panel, the camera shooting equipment is connected with the computer through a circuit, the lens end of the camera shooting equipment is provided with the projection panel, the laser emitter is arranged on a reference point which is to be measured and is aligned with the projection panel of the reception processing device, so that the projection panel and a laser beam are basically perpendicular, and the back surface of the half reflection projection panel is pasted with a film with a precise scale label. When the point which is to be measured is displaced, laser light spots which are projected to the projection panel can simultaneously generate displacement, the camera shooting equipment picks up light spot signals, and the signals are processed through the computer. The size of the displacement of a relative zero point is calculated, and the present invention is especially used for detecting and monitoring bridge deflection, ground subsidence, mountain body movement and the submerge and the movement of buildings. The present invention has the advantages of broad range of application, convenient installation and debugging and long-distance detection and monitoring for a long time.
Description
Technical field
The present invention relates to be used to detect and monitor deflection of bridge span, land subsidence, massif move, building sink and move displacement/deflection detection and device for monitoring and method, especially utilize displacement/deflection detection and the monitoring device and the method for lasing light emitter.
Background technology
Detect that deflection of bridge span, land subsidence, massif move, building sink and move in modern road and bridge, play an important role in building.In the prior art, it is more and more to be used to detect and monitor the method and apparatus that deflection of bridge span, massif move, as up-to-date disclosed 200510059624.1 " a kind of slope surface displacement measuring method and the devices " of Chinese patent and 200510020375.5 " two dimension, large range laser amount of deflection/displacement measurement method and device ", the former adopts the little and highly sensitive angular displacement sensor of driving torque, measures but can only be used for slope surface displacement.The latter makes the laser beam level of the tested locations of structures of reflection be mapped to hot spot by control controllable damping hinge arrangement and receives on the measurement mechanism, form hot spot, through picture pick-up device to hot spot be marked as picture, calculate the relative distance of the centre of gravity place and the light emitting diode picture of laser facula again, obtain the coordinate of present hot spot, coordinate is deducted initial value, promptly obtain the shift value of present hot spot, draw by two Bit Shifts of geodesic structure; The laser beam of this device can only level be mapped on the hot spot reception measurement mechanism, therefore generating laser and hot spot reception measurement mechanism must be on the same horizontal line, can't use for the place that the inclination angle is arranged, that installs and use is limited in scope, even on surface level, install, require the complete level of laser beam to be mapped to hot spot and receive the debugging of measurement mechanism and operate also very difficult; Secondly this device must very strictly be adjusted the position of picture pick-up device and screen when carrying out the benchmark debugging, make the mark that is in four angles of screen just enter image pickup scope, operation and the requirement height of adjusting, this device can only be put in fixed location and the necessary usefulness of doing monitoring of installing of generating laser downwards once more, putting position can not be changed arbitrarily, the detection of the measured point that difference is required can't be finished, and, this device can only be monitored natural bow, can not monitor dynamic deflection.
As mentioned above, what these two kinds of measurement mechanisms and method were used is limited in scope, and the Installation and Debugging difficulty seriously restricts it and detecting and monitoring deflection of bridge span, land subsidence, massif move, building sink and the real promotion and application of aspect such as mobile.
Summary of the invention
At the prior art above shortcomings, the object of the present invention is to provide a kind of usable range wide, Installation and Debugging are convenient, can detect and monitor detection and the monitoring device and the method for displacement/deflections such as bridge, ground, massif, building for a long time, at a distance.
The object of the present invention is achieved like this: displacement/deflection detects and monitoring device, comprises the computing machine of generating laser, receiving and processing device and pre-installed software, and receiving and processing device is made up of picture pick-up device and projection panel; Picture pick-up device is connected with computing machine by circuit, and the camera end of picture pick-up device is provided with the projection panel; Generating laser is located at reference to tested point, and generating laser is aimed at the projection panel of receiving and processing device, makes the projection panel vertical substantially with laser beam.
Described projection panel is a half reflection projection panel; Stick the scale film behind the described panel.
Displacement/deflection detects and the method for monitoring, comprises the steps: at first to utilize the scale film behind the half reflection projection panel that the scale benchmark is demarcated; At timing signal, at first on screen, specify arbitrarily a bit as zero point, project on this aspect with beam of laser near screen then, confirm that from software this point is zero point, respectively get a bit in the appropriate location up and down at this zero point afterwards, confirm its direction and distance by this reading of scale on film, and on software interface, confirm with respect to zero point; After the demarcation, generating laser is placed tested point, receiving trap is placed fixing reference point; And adjust generating laser with laser directive projection panel, projection panel reflecting part light beam with half reflection effect returns the transmitter direction, adjust half reflection projection panel and make reflection ray penetrate positive generating laser just, thereby guarantee that effectively the projection panel is vertical with laser beam; When tested point was subjected to displacement, the laser facula that projects on the projection panel will be subjected to displacement simultaneously, and picture pick-up device absorbs the hot spot signal and imports signal into computer by computer interface.
Computer carries out the computing of facula position after the light signal that collects is carried out pre-service, and compares with predefined null displacement point, calculates the displacement size of relative zero, and is stored;
According to the data of storage, can detect sense of displacement, size and the vibration situation of tested point, draw analysis diagram easily, the long-term tendency of the displacement of drawing.
Compared to existing technology, the present invention has following advantage and characteristics:
1, be made of generating laser, half reflection projection panel, picture pick-up device and computing machine and corresponding software, utilize picture pick-up device to obtain the laser facula movable signal, the data of collection reach computer via computer interface, are convenient to observe, and transmission process is convenient; Simple in structure, manufacturing cost is lower;
2, laser beam emitting device and receiving and processing device are installed on the bearing of being convenient to move and adjust, and can move and change test position as required easily;
3, can detect and monitoring distance displacement, amount of deflection and vibration at a distance changes, be suitable for to deflection of bridge span, land subsidence, massif move, building sink and the detection and the monitoring of moving;
4, can detect and monitor the vibration situation of any moment measured point; And long-term displacement or amount of deflection and trend thereof; Can obtain information analysis at a distance by network.
The invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is a system construction synoptic diagram of the present invention;
Fig. 2 is a receiving trap synoptic diagram of the present invention;
Fig. 3 is the scheme of installation of generating laser.
Among the figure, 1-generating laser, 2-half reflection projection panel, 3-picture pick-up device, 4 computing machines, 5-foot rest.
Embodiment
Shown in Figure 1, displacement/deflection of the present invention detects and monitoring device, is made of the computing machine 4 of generating laser 1, half reflection projection panel 2, picture pick-up device 3 and prepackage corresponding software; Picture pick-up device 3 is connected with computing machine 4 by circuit, and the camera end of picture pick-up device 3 is provided with half reflection projection panel 2; Generating laser 1 is located at tested point, adjusts generating laser 1 and half reflection projection panel 2 according to folded light beam, makes the Laser emission direction aim at half reflection projection panel 2, and with half reflection projection panel 2 good vertical.
During work, it is far away and place on the half reflection projection panel 2 of point of fixity to distance that generating laser 1 sends laser projections.When tested point is subjected to displacement and vibrate, generating laser 1 moves thereupon, project projection panel 2 formed hot spots by generating laser 1 emitted laser signal and will be subjected to displacement pro rata thereupon and vibrate, picture pick-up device 3 picked-up hot spot signals also import signal into computer by computer interface; Computer carries out the computing of facula position after the light signal that collects is carried out pre-service.And compare with predefined null displacement point, calculate the displacement size of relative zero, and stored.
After tested point was subjected to displacement, the laser facula that projects on the half reflection projection panel 2 will be subjected to displacement simultaneously, can detect sense of displacement, size and the vibration situation of tested point thus, and these motions are all stored with data mode; Data according to storage can draw analysis diagram, the long-term tendency of the displacement of drawing easily; And obtain data by network remote and carry out correlation analysis.Use the plain camera head of 30 everythings at present when the screen of 30 centimetres of sizes is multiply by in 30 centimetres of detections, detect error less than ± 0.2 millimeter, and detect error and detect range-independence.
As shown in Figure 2, receiving and processing device comprises picture pick-up device 3 and half reflection projection panel 2; Receiving and processing device is located on the foot rest 5 of adjustable position, angle and direction, and the receiving and processing device outside also is provided with protective cover.The position of size, direction and the picture pick-up device of half reflection projection panel 2 can need be adjusted at different accuracy requirements or test, is convenient to install, is convenient to demarcate benchmark, uses debugging convenient.
The present invention adopts the transparent or semitransparent material with reflection or half reflection effect as the projection panel, stick scale film behind the panel with exact scale, laser projections to the projection panel after, the part laser beam projects to through panel and is used for the picture pick-up device detection on the scale film, and another part laser beam reflects by reflex.
Make reflector laser light just in time guarantee laser beam and panel good vertical effectively in reflected back generating laser place by position, the angle of adjusting the projection panel; Laser beam through after the long-distance transmissions owing to the emission angle reason, to diverge to a bigger irregular hot spot in the time of on projecting the projection panel, this device can carry out the effective measurement of measures assurances such as threshold setting, medium filtering to hot spot such as center of gravity by the software that device is adopted to hot spot; Can be with any on the screen a bit as zero point, and respectively get some the optional position of four direction up and down at zero point, demarcate with the accurate scale contrast that has on the screen, this is convenient to satisfy displacement and the detection of amount of deflection and the different requirements of monitoring of not planting occasion; Laser projections forms hot spot to half reflection projection panel, and move along with moving of generating laser the position of this hot spot, and when generating laser is fixed in the measured point, moving of this hot spot will be consistent with the displacement of measured point.
As shown in Figure 3, Laser emission part as bearing, can be adjusted position, height and angle by a laser instrument 1 and the foot rest 5 that can adjust orientation, height and launch the inclination angle arbitrarily; Laser can change transmit direction arbitrarily by adjusting bearing, adjusts the inclination angle according to the place needs and shoots to the projection panel.
Claims (2)
1. a displacement/deflection detects and monitoring method, it is characterized in that comprising the steps:
Utilize the scale film behind generating laser (1) and the half reflection projection panel (2) that the scale benchmark is demarcated;
It is far away and place on the half reflection projection panel (2) with reference to point of fixity to distance that generating laser (1) sends laser projections;
Adjust half reflection projection panel (2), make it reflecting part light beam retroreflection laser transmitter (1), to guarantee the screen good vertical of laser beam and projection panel (2), another part light sees through half reflection projection panel (2) and form hot spot on film;
When tested point was subjected to displacement and vibrate, generating laser (1) moved thereupon, projected projection panel (2) by generating laser (1) emitted laser signal and formed hot spot and will be subjected to displacement pro rata thereupon and vibrate;
Picture pick-up device (3) absorbs the hot spot signal and imports signal into computer (4) by computer interface; Computer carries out the computing of hot spot signal location after the light signal that collects is carried out pre-service; And compare with predefined null displacement point, calculate the displacement size of relative zero, and stored.
2. displacement/deflection according to claim 1 detects and monitoring method, it is characterized in that: the data according to storage draw analysis diagram, the long-term tendency of the displacement of drawing; And obtain data by network remote and carry out correlation analysis.
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| CNB2005100574736A CN100390498C (en) | 2005-12-28 | 2005-12-28 | Apparatus and method for detecting and monitoring displacement/deflection |
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| CNB2005100574736A CN100390498C (en) | 2005-12-28 | 2005-12-28 | Apparatus and method for detecting and monitoring displacement/deflection |
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| CN100390498C true CN100390498C (en) | 2008-05-28 |
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