CN103411585A - Sedimentation measurement method by laser spot imaging technique - Google Patents
Sedimentation measurement method by laser spot imaging technique Download PDFInfo
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- CN103411585A CN103411585A CN2013103728001A CN201310372800A CN103411585A CN 103411585 A CN103411585 A CN 103411585A CN 2013103728001 A CN2013103728001 A CN 2013103728001A CN 201310372800 A CN201310372800 A CN 201310372800A CN 103411585 A CN103411585 A CN 103411585A
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Abstract
The invention provides a device for measuring relative sedimentation of two measured points along the change of time. According to the device, a collimated parallel laser beam illuminates the other measured point, and a spot position on a target face of an optical imaging system at the other measured point can be accurately measured by an inner area array or linear array CCD/CMOS (Charge Coupled Device/Complementary Metal Oxide Semiconductor) imaging system, so that the relative vertical sedimentation or the horizontal displacement of the two measured points is determined. A system comprises a parallel laser light source 1, an imaging target face 2, a lens 3, a photoelectric detector 4 and a signal processing system 5; in a figure, an imaginary line frame 6 is a first measured point, and a right imaginary line frame 7 is a second measured point; for realizing cascading measurement, a general instrument simultaneously comprises the parallel laser light source 1 and a measuring unit 7.
Description
Technical field
The technical field that the laser facula imaging technique is measured sedimentation is a kind of settlement of foundation method that detects buildings, subway, high ferro, bridge, dam etc., and its measuring accuracy General Requirements relates generally to civil engineering work and photoelectron, the information processing technology at 0.1mm-0.2mm..
Technical background
At present, settlement monitoring mainly adopts monitoring stake, Settlement Cup, settlement plate, magnet ring sedimentometer, hydraulic type Section type settlement instrument and horizontal inclinometer, intelligent total powerstation, all kinds of hydrostatic level (comprising fiber Bragg grating type, condenser type, CCD formula), pressure unit etc.These monitoring equipment efficiency are low, error is large, cost is high, measurement parameter is not comprehensive, install very complicated.Be difficult to use in large-scale engineering.
The laser facula imaging technique that the present invention adopts, adopt laser alignment hot spot, photoelectric imaging technology, image processing techniques and wireless communication technique, not needing needs to lay fluid-through tube as hydrostatic level, have easy for installation, networking is convenient, installs and implements the advantages such as convenient.
Summary of the invention
It is to utilize the one-way of laser that the laser facula imaging technique is measured sedimentation, from the imaging target surface of a measurement point by laser alignment another one measurement point, at the fixed imaging photoelectric device, in the situation of laser instrument and imaging target surface, if sedimentation occurs in measurement point 1 or measurement point 2, laser facula on the imaging target surface is subjected to displacement so, can the take pictures variation of its position of imaging of photoelectronic imaging device, after initial facula position is taken pictures, through the method for image processing, find out the center of laser facula, signal processing system can send to server by data by wireless network, to record its initial facula position.After after a while, if sedimentation has occurred for measurement point 1 or measurement point 2, system will be taken pictures again, through same processing, by data recording, according to the measurement data of twice, thereby can obtain relative position Δ X, the Δ Y of sedimentation.
If first test point is reference point, in this position, sedimentation does not occur namely, the data that measure so are settling datas of second point, the data of the 3rd test point can be calculated its settling data according to the data of second test point.
According to this mensuration, by laser facula imaging measurement system and laser form one can cascade laser facula imaging settlement gauge, the Adoption Network technology, can carry out data communication between adjacent test point, thus by the settlement calculation of self out.
According to this mensuration, by laser facula imaging measurement system and laser form one can cascade laser facula imaging settlement gauge, the network technology adopted can access an other host computer or server, host computer can be a computer or other smart machines with arithmetic capability, and when host computer carries out DATA REASONING, when stops measuring, simultaneously data being returned if can saying the word to control this system.
According to this mensuration, by laser facula imaging measurement system and laser form one can cascade laser facula imaging settlement gauge, can adopt separately LCD or LED display technique that data are presented to the machine.
Image slices flow chart of data processing of the present invention can be first will adopt image smoothing filtering technique and the elimination of space sharpening method or weaken interference and the noise on image, choose suitable image threshold image is carried out to binary conversion treatment, image is divided into to object and background, then the border of all objects is extracted, get rid of other boundary interference, the monitoring objective edge is identified, finally carried out process of fitting treatment, obtain enclosing heart position coordinates.
The accompanying drawing explanation
Fig. 1 is principle schematic of the present invention, in figure 1: parallel laser light source, 2: the imaging target surface, 3: imaging len, 4: imaging electrical part (as CCD, CMOS etc.), 5: signal processing unit and wireless transmission unit, 6: be installed on the first test point, 7: be installed on the second test point.
Fig. 2: the variation of the image space of laser facula, for the first time with the variation of secondary measurement coordinate.
Fig. 3: be the situation of measuring system cascade while using, on test point 1, LASER Light Source be installed, on test point 2, the photoelectronic imaging processing unit is installed and is the measuring LASER Light Source of next stage.Between test point 1, test point 2, test point 3, connect by network, the network of employing can be cable network, can be also wireless network, and in example of the present invention, we adopt Zigbee to carry out networking.Wireless network can access host computer or server.
Specific embodiments
According to laser facula imaging settlement gauge of the invention process, formed by the two large divisions, a part is LASER Light Source, imaging subsystems, signal processing subsystem, communication subsystem, LASER Light Source adopts monochromatic semiconductor laser, laser power can be 20mw-100mw, this LASER Light Source can by signal processing system control its switch, when not measuring, LASER Light Source can be closed.The imaging target surface can be frosted glass, and its size is decided according to the actual requirements, and generally adopts 10cmx10cm to 15cmx15cm.The photoelectric device of imaging system generally can adopt cmos device, the cost of system is relatively inexpensive like this, 15cm for measurement range, precision is in the system of 0.1mm, the CMOS camera chip that can adopt is 5,000,000 pixels, be 2592x1944, for the target surface of 15cmx15cm, the precision of 150mm/2592 is 0.058mm like this.Also can adopt other CMOS camera chip such as OV8820, i.e. 3264x2448, for the target surface of 15cmx15cm, the precision of 150mm/3264 is 0.046mm like this.
Signal processing can adopt ARM9 or ARM11 system, as Samsung2440 or 6410, CMOS, can adopt the CMOS camera OV5620 of Omnivision, OV5640, OV8820 etc.In order to improve the arithmetic capability system, also can adopt FPGA to design to improve arithmetic speed.
The resolution set in order to improve image, can the collimation semiconductor laser of design LASER Light Source specifically be designed, hot spot after namely requiring to collimate is after 30 meters, spot diameter is less than 20mm, the LASER Light Source adopted is green or bluish violet, main cause is adopt in red and environment for use, and the redness of sunshine is obscured mutually.Should avoid using red laser.
For the Communication processing aspect, the implementation method that can adopt is to adopt the communication chip of Zigbee, as EM351 and the EM357 chipset of Silion Labs.Also can be with other Zigbee communication chip.The system formed can form network by reaching 256 measuring units, then by a Zigbee router accessing Internet.
Claims (10)
1. the laser facula imaging technique is measured sedimentation, it is characterized in that, LASER Light Source 1, the first test point for launching parallel laser that is installed on the first test point is with reference to test point, is installed on laser facula imaging system and the signal processing system unit of the second test point; The hot spot signal that this system will measure carries out graphics process, find out its central point, determine the coordinate position of central point, thereby the relative position that can record with the data comparison that measured last time the position of the first test point and the second test point according to this coordinate position changes, thereby measure sedimentation and the horizontal shift of two test points.
2. laser facula imaging technique according to claim 1 is measured sedimentation, it is characterized in that, according to this mensuration, by laser facula imaging measurement system and LASER Light Source form one can cascade laser facula imaging settlement gauge, thereby make the settlement measurement networking.
3. laser facula imaging technique according to claim 1 is measured sedimentation, it is characterized in that, the laser facula imaging detector can be CCD, CMOS electrooptical device, or other electrooptical devices.Can be the face battle array, also can be CCD or the cmos device of linear array.
4. laser facula imaging technique according to claim 1 is measured sedimentation, it is characterized in that, LASER Light Source can be visible laser instrument, can be also infrared laser.
5. laser facula imaging technique according to claim 1 is measured sedimentation, it is characterized in that, LASER Light Source is a kind of semiconductor laser, and the depth of parallelism of the laser of emission is good, on the target surface of imaging system, forms the hot spot that size is less than 20mm.
6. laser facula imaging technique according to claim 1 is measured sedimentation, it is characterized in that, the imaging target surface adopts the screen that frosted glass or other can be good by the laser facula projection, this screen can be with the colour filter effect, namely can only can not pass through by other light by optical maser wavelength, also can not be with the colour filter effect, the method that adopts signal to process is found out the center of laser spots.
7. laser facula imaging technique according to claim 1 is measured sedimentation, it is characterized in that, the target surface size of imaging system can be different size, and from 10mmx10mm to 500mmx500mm, the shape of target surface can be square, can be also rectangle.
8. laser facula imaging technique according to claim 1 is measured sedimentation, it is characterized in that, system can be changed the figure photographed, and finds out the coordinate of the central point of hot spot with respect to imaging system by the graphics process algorithm.
9. laser facula imaging technique according to claim 1 is measured sedimentation, it is characterized in that, and the coordinate data that system can the Output of laser hot spot, data-interface is RS232,485, can be also other interfaces, as Ethernet and other wireless networks; Also can adopt display unit directly to show current settling data.
10. laser facula imaging technique according to claim 1 is measured sedimentation, it is characterized in that, while from LASER Light Source, being registered to the imaging target surface of another one measuring instrument, light can be level, also can tilt.
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104180759A (en) * | 2014-09-05 | 2014-12-03 | 济南大学 | Reservoir dam body settlement and horizontal displacement datum point detecting device and method |
| CN104197852A (en) * | 2014-09-05 | 2014-12-10 | 济南大学 | System for monitoring sinking and horizontal displacement of reservoir dam body |
| CN106871793A (en) * | 2017-04-20 | 2017-06-20 | 吴慧明 | A kind of use laser and the method for imaging technique combined monitoring building displacement |
| CN107388974A (en) * | 2017-09-01 | 2017-11-24 | 浙江华东工程安全技术有限公司 | Photo-electric bidirectional displacement measures new method |
| CN107422333A (en) * | 2017-07-03 | 2017-12-01 | 上海励之恒科技有限公司 | Laser ranging matrix |
| CN107462214A (en) * | 2017-08-24 | 2017-12-12 | 南京斯比特电子科技有限公司 | A kind of high interference immunity fan laser wireless settlement instrument and its monitoring method |
| CN108007394A (en) * | 2017-11-30 | 2018-05-08 | 南京理工大学 | The centering debugging apparatus and its adjustment method of a kind of distant-range high-precision |
| CN108507530A (en) * | 2018-04-02 | 2018-09-07 | 大连理工大学 | A kind of high precision measuring device and method of long-range measurement displacement |
| CN108917707A (en) * | 2018-07-13 | 2018-11-30 | 中铁四局集团有限公司 | A kind of laser deflection measuring apparatus and its measurement method |
| CN109000614A (en) * | 2018-05-03 | 2018-12-14 | 信利光电股份有限公司 | A kind of 0 grade of slant detection method and detection system, readable storage medium storing program for executing of structured light projection device |
| CN109322336A (en) * | 2018-11-22 | 2019-02-12 | 中国南方电网有限责任公司超高压输电公司昆明局 | A kind of monitoring device for pipeline framework foundation settlement |
| CN109974596A (en) * | 2019-04-28 | 2019-07-05 | 广东工业大学 | A kind of linear displacement measurement device |
| CN111926662A (en) * | 2020-02-11 | 2020-11-13 | 北京联睿科科技有限公司 | Online monitoring method and system for pavement settlement |
| CN112013813A (en) * | 2020-09-29 | 2020-12-01 | 浙江长芯光电科技有限公司 | Building settlement monitoring method, monitoring device and monitoring system |
| CN112161603A (en) * | 2020-09-28 | 2021-01-01 | 浙江长芯光电科技有限公司 | Building settlement monitoring method, monitoring device and monitoring system |
| CN113155038A (en) * | 2021-05-11 | 2021-07-23 | 深圳安锐科技有限公司 | Two-dimensional displacement real-time measurement system based on laser spot position identification |
| CN115095742A (en) * | 2022-06-08 | 2022-09-23 | 中科艾迈克精密机电制造（苏州）有限公司 | Laser installation device and emitter, equipment and system comprising same |
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2013
- 2013-08-19 CN CN2013103728001A patent/CN103411585A/en active Pending
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180759A (en) * | 2014-09-05 | 2014-12-03 | 济南大学 | Reservoir dam body settlement and horizontal displacement datum point detecting device and method |
| CN104197852A (en) * | 2014-09-05 | 2014-12-10 | 济南大学 | System for monitoring sinking and horizontal displacement of reservoir dam body |
| CN104180759B (en) * | 2014-09-05 | 2016-07-06 | 济南大学 | Reservoir dam depression and horizontal displacement Trigger jitter detection device and detection method |
| CN104197852B (en) * | 2014-09-05 | 2016-08-24 | 济南大学 | Reservoir dam depression and horizontal displacement monitoring system |
| CN106871793A (en) * | 2017-04-20 | 2017-06-20 | 吴慧明 | A kind of use laser and the method for imaging technique combined monitoring building displacement |
| CN106871793B (en) * | 2017-04-20 | 2019-02-19 | 吴慧明 | A method of it is displaced using laser and imaging technique combined monitoring building |
| CN107422333A (en) * | 2017-07-03 | 2017-12-01 | 上海励之恒科技有限公司 | Laser ranging matrix |
| CN107422333B (en) * | 2017-07-03 | 2023-09-29 | 浙江新创规划建筑设计有限公司 | Laser ranging matrix |
| CN107462214A (en) * | 2017-08-24 | 2017-12-12 | 南京斯比特电子科技有限公司 | A kind of high interference immunity fan laser wireless settlement instrument and its monitoring method |
| CN107462214B (en) * | 2017-08-24 | 2020-04-21 | 南京斯比特电子科技有限公司 | High-interference-resistance fan-shaped laser wireless settlement meter and monitoring method thereof |
| CN107388974A (en) * | 2017-09-01 | 2017-11-24 | 浙江华东工程安全技术有限公司 | Photo-electric bidirectional displacement measures new method |
| CN108007394A (en) * | 2017-11-30 | 2018-05-08 | 南京理工大学 | The centering debugging apparatus and its adjustment method of a kind of distant-range high-precision |
| CN108007394B (en) * | 2017-11-30 | 2020-06-19 | 南京理工大学 | Remote high-precision centering debugging device and debugging method thereof |
| CN108507530A (en) * | 2018-04-02 | 2018-09-07 | 大连理工大学 | A kind of high precision measuring device and method of long-range measurement displacement |
| CN109000614A (en) * | 2018-05-03 | 2018-12-14 | 信利光电股份有限公司 | A kind of 0 grade of slant detection method and detection system, readable storage medium storing program for executing of structured light projection device |
| CN108917707A (en) * | 2018-07-13 | 2018-11-30 | 中铁四局集团有限公司 | A kind of laser deflection measuring apparatus and its measurement method |
| CN109322336A (en) * | 2018-11-22 | 2019-02-12 | 中国南方电网有限责任公司超高压输电公司昆明局 | A kind of monitoring device for pipeline framework foundation settlement |
| CN109974596B (en) * | 2019-04-28 | 2021-11-26 | 广东工业大学 | Linear displacement measuring device |
| CN109974596A (en) * | 2019-04-28 | 2019-07-05 | 广东工业大学 | A kind of linear displacement measurement device |
| CN111926662A (en) * | 2020-02-11 | 2020-11-13 | 北京联睿科科技有限公司 | Online monitoring method and system for pavement settlement |
| CN112161603A (en) * | 2020-09-28 | 2021-01-01 | 浙江长芯光电科技有限公司 | Building settlement monitoring method, monitoring device and monitoring system |
| CN112013813A (en) * | 2020-09-29 | 2020-12-01 | 浙江长芯光电科技有限公司 | Building settlement monitoring method, monitoring device and monitoring system |
| CN113155038A (en) * | 2021-05-11 | 2021-07-23 | 深圳安锐科技有限公司 | Two-dimensional displacement real-time measurement system based on laser spot position identification |
| CN115095742A (en) * | 2022-06-08 | 2022-09-23 | 中科艾迈克精密机电制造（苏州）有限公司 | Laser installation device and emitter, equipment and system comprising same |
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