CN202350752U - Laser measuring system used for monitoring tunnel deformation - Google Patents
Laser measuring system used for monitoring tunnel deformation Download PDFInfo
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- CN202350752U CN202350752U CN2011205172612U CN201120517261U CN202350752U CN 202350752 U CN202350752 U CN 202350752U CN 2011205172612 U CN2011205172612 U CN 2011205172612U CN 201120517261 U CN201120517261 U CN 201120517261U CN 202350752 U CN202350752 U CN 202350752U
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Abstract
The utility model provides a laser measuring system used for monitoring tunnel deformation. The laser measuring system comprises a laser, a monitoring light barrier, a laser receiver and a monitor warning system, wherein a Gaussian beam optic axis of the laser and the optic axis of the laser receiver as well as the optic axis of the monitoring light barrier are arranged in a collineation manner. According to the laser measuring system provided by the utility model, a conciseness structure that the three points of the laser, the monitoring light barrier and the laser receiver are arranged on the same line is adopted, the monitoring light barrier is established and realizes a function of automatically monitoring laser light-intensity variation with the receiver, thereby achieving automatization and all-day full-time monitor; the laser measuring system can be used in the field weather condition, and is simple to operate, convenient to use and safe and accurate; the receiver sends a sound alarm and a control signal; and background noise is removed at low cost by utilizing monochromaticity of laser to obtain a high-signal-ratio signal, thus improving the monitoring reliability.
Description
Technical field
The utility model belongs to the tunnel safety monitoring technical field, and a kind of laser measurement system that is used to monitor tunnel deformation especially is provided.
Background technology
It is annual because geologic hazard causes that the landslide accident that traffic tunnel, the deformation of mine tunnel cause has much serious threat vehicular traffic and miners' life security.Usually monitoring tunnel, mine deformation use are laser orientation instruments; As the proving installation of tunnel deformation, be that the beam energy that utilizes laser instrument to send out is bigger, shine directly into target to be measured; Obtain concrete distance value and angle value, draw tunnel target deformation through geometrical calculation.Rely on the principle that laser can sight alignment, detect the variation in tunnel intuitively.Have convenient enforcement, observe the simple and clear characteristics that change.Shortcoming is that human eye observation subjectivity is too strong, and measuring result error is bigger, especially can not implement full-time time monitoring.
Also can use the variation in full standing posture transit survey tunnel sometimes.Shortcoming is a complicated operation, and efficiency of measurement is very low.Variation principle and this invention obvious difference in full standing posture transit survey tunnel, the transit reception be target return laser, generally need cooperative target be installed in the measuring point.Conventional monitoring method is to utilize the deformation of laser orientation instrument or full standing posture transit periodic measurement measurement point to change; Existing can not full-time real-time monitoring in 24 hours and not elastically-deformable shortcoming in energy measurement tunnel and deficiency; This flexible deformation in tunnel is the geologic hazard early signal that causes the tunnel to visit exactly; Have the temporal characteristics of moment generation moment recovery, the deformation amplitude is basically in the millimeter magnitude.
Summary of the invention
The utility model provides a kind of laser measurement system that is used to monitor tunnel deformation; What overcome that existing tunnel, monitoring mining texturing machine exist can not full-time real-time monitoring in 24 hours and energy measurement tunnel elastic deformation defective not; Tunnel, the contingent landslide accident of mine be can find to greatest extent early, safe driving, safety in production guaranteed.
The technical solution of utility model is following:
Comprise that laser instrument, monitoring light block, laser pickoff and monitor and alarm system constitute; And guarantee that the Gaussian beam optical axis of laser instrument and the optical axis and the monitoring light of laser pickoff block the setting of optical axis conllinear.
Described laser instrument is the visible light semiconductor laser, and laser beam expanding, obtaining the angle of divergence is the light beam below the milliradian by interior inverted telescope; It all is isosceles Gaussian distribution that the output laser intensity meets the X-Y bidimensional.
Described monitoring light blocks to be blocked by center logical light circle tubular light and constitutes, and the diameter of light hole equals the diameter through position to be monitored laser beam; Diameter that monitoring light blocks and length ratio cooperate to turn to the adjustment mirror that laser beam is passed through in the tunnel bend greater than 1.
Laser pickoff drives monitoring of detection alarm device and warning with laser signal reception the becoming electric signal of laser instrument.
Also can be provided with apart two pairs of parallel mirrors during described monitoring light blocks as the part that light blocks, have four reflectings surface, mirror surface is parallel each other in twos, and the optical axis of pair of parallel reflecting surface is vertical with another optical axis to parallel reflective mirror.
For with the distortion laser measurement that bend is arranged in the road, can turn to adjustment mirror and monitoring light to block to unite to use through one or several and realize that laser beam passes through bend.
The course of work of the utility model is following:
Laser instrument is installed at regional two ends in that tunnel safety is confirmed respectively, and receiver is being installed, and guarantees that laser just in time shines the laser pickoff center.In the position of needs monitoring monitoring light is installed and is blocked, adjustment light blocks logical light circular hole size and position, guarantees that laser passes through.
At first open the laser instrument at two ends, tunnel, make laser instrument send Gaussian beam; Observe and adjust laser beam (signal) power that other end receiver receives, through the output impedance of adjustment receiver, 90% of setting signal maximum of intensity is early warning value; Also can adopt monitoring light to stop when falling 1 millimeter according to real response sensitivity requirement, receiving the light intensity intensity level that diminishes be early warning value.Block near part laser beam through blocking the monitoring light that hides position to be monitored, confirm laser pickoff optimum receiver working point, the logical light circular hole that assurance monitoring light blocks equals the beam diameter size of position to be monitored; Utilize tunnel deformation to cause the beam diameter deformation that monitoring location monitoring light blocks, drive the alarm output alarm control signal that is connected with laser pickoff.
The good effect of the utility model is:Employing laser instrument, monitoring light block, the concise structure of laser pickoff sight alignment, have set up monitoring light to block, and have realized the automatic function that automatic monitoring laser intensity changes with receiver, have accomplished robotization and full-time monitoring in 24 hours; Weather conditions use down in the open air; Simple to operate, convenient use, safety and precise; Sound by receiver and to report to the police and control signal; Utilize the monochromaticity of laser, low-cost processes is fallen ground unrest, obtains high signal than signal, thereby improves the reliability of monitoring.
Description of drawings
Fig. 1 is the utility model monitoring principle synoptic diagram;
Fig. 2 is that the pipe light that the monitoring light of the utility model blocks blocks structure principle chart;
Fig. 3 is the utility model deviation mirror structure principle chart;
Among the figure: 1, laser instrument; 2, monitoring light blocks; 3, turn to the adjustment mirror; 4, laser pickoff; 5, monitor and alarm system; 6, position to be measured; 2.1, on move light beam; 2.2, move down light beam; 2.3, clear aperature; 2.4, optical axis; 2.5,45 ° of incident mirrors; 2.6,45 ° of incident paralleloscopes; 2.7,45 ° of outgoing mirrors; 2.8,45 ° of outgoing paralleloscopes; 2.9, outer cover length L; 3.1, incident beam; 3.2 entrance window; 3.3, catoptron; 3.4 exit window; 3.5, outgoing beam.
Embodiment
Embodiment 1
In XYZ coordinate system shown in Figure 1; The two ends of in the tunnel, confirming safety are separately installed with laser instrument 1 and laser pickoff 4; Monitoring light blocks on 2 positions to be monitored 6 that are installed between laser instrument 1, the laser pickoff 4, makes the laser of laser instrument 1 block 2 through monitoring light and shines on the laser pickoff 4; Adjustment monitoring light blocks 2 light hole 2.3 sizes and equates with the lasing beam diameter of laser instrument 1 through position 6 to be monitored; Make Gaussian distribution laser that laser instrument 1 sends block 2 through monitoring light and received by laser pickoff 4, guaranteeing to connect laser, to receive the center of device 4 the strongest with the laser that the laser beam center overlaps acquisition; Utilize to survey the deformation that position 6 to be detected takes place in the tunnel, drive monitoring light and block 2 and be subjected to displacement, cause blocking 4 laser intensity through monitoring light and change, the laser intensity that laser pickoff 4 is received weakens, and realizes the monitoring to tunnel deformation.
It also can be several that described position to be detected 6 can be one, and same structure uses simultaneously, can monitor the deformation of the different region locations in several kilometers.
Described laser instrument 1 (Thorlabs model L635P005-635) uses 650 nm; 5 mw semiconductor lasers, the color of light beam are red, and the angle of divergence is 0.07 mrad behind the beam shaping; The bright dipping bore is 20 mm, and the laser radiation hot spot is 70mm on the 1000 m targets.
Monitoring light blocks 2 and uses the length of side to be respectively the rectangle aluminium sheet of 100mm and 160mm, and making at the rectangle center directly is the circular hole of 30mm, is fixedly connected with corresponding support.
The model that laser pickoff 4 employing shores pine produces is the S2281 photelectric receiver, directly is connected on model C 9329 photo amplifiers, and the signal of output is 0 ~ 5V voltage signal, can directly drive the hummer and the conduct output signal of monitor and alarm system 5.
Embodiment 2
The present invention mainly by laser instrument 1, monitoring light block 2, laser pickoff 4 and monitor and alarm system 5 constitute; And guarantee that the Gaussian beam optical axis of laser instrument 1 and the optical axis and the monitoring light of laser pickoff 4 block 2 optical axis conllinear settings;
Described laser instrument 1 is the visible light semiconductor laser, and laser beam expanding, obtaining the angle of divergence is the light beam below the milliradian by interior inverted telescope; It all is isosceles Gaussian distribution that the output laser intensity meets the X-Y bidimensional;
Described monitoring light blocks 2 and is blocked by center logical light circle tubular light and to constitute, and the diameter of light hole 2.3 equals the diameter through position to be monitored laser beam; Monitoring light blocks 2 diameter and length ratio greater than 1, in the tunnel bend, cooperates to turn to adjust mirror laser beam is passed through.
Laser pickoff 4 drives detection alarm device 5 monitorings and warning with laser signal reception the becoming electric signal of laser instrument 1.
Described monitoring light blocks two pairs of parallel mirrors being provided with in 2 apart as the part that light blocks, and has four reflectings surface, and mirror surface is parallel each other in twos, and the optical axis of pair of parallel reflecting surface is vertical with another optical axis to parallel reflective mirror.
With reference to Fig. 2; The catoptron that monitoring light blocks in 2 can also following structure: 45 ° of incident angle incident minute surfaces 2.5 and 45 ° of parallel minute surfaces 2.6 of incident angle incident are parallel reflective mirror each other; 45 ° of incident angle outgoing minute surfaces 2.7 and 45 ° of parallel minute surfaces 2.8 of incident angle outgoing are parallel reflective mirror each other, and the optical axis 2.4 of these two pairs of parallel reflective mirrors is 90 ° of layouts; On move light beam 2.1 and move down light beam 2.2 and pass through respectively, clear aperature 2.3 gets into the monitoring light and blocks in 2, monitors light through 2.6,45 ° of outgoing mirrors 2.7 of 2.5,45 ° of incident paralleloscopes of 45 ° of incident mirrors and 45 ° of outgoing paralleloscopes 2.8 refraction back ejaculations and blocks 2.
In the high quick-fried environment in tunnel, the construction distance is 5 meters, and the ratio that monitoring light blocks 2 diameter and outer cover length L is 1:12.
In conjunction with Fig. 3; And have bend with the road in the embodiment process; Monitoring light block 2 with laser pickoff 4 between can turn to adjustment mirror 3 and monitoring light to block 2 through one or several to unite and use the realization laser beam to pass through bend: incident beam 3.1 turns to refraction through entrance window 3.2 through catoptron 3.3; By exit window 3.4 outgoing beams 3.5, realize the turning of laser beam.
Claims (4)
1. be used to monitor the laser measurement system of tunnel deformation, it is characterized in that: comprise that laser instrument, monitoring light block, laser pickoff and monitor and alarm system constitute; And guarantee that the Gaussian beam optical axis of laser instrument and the optical axis and the monitoring light of laser pickoff block the setting of optical axis conllinear;
Described laser instrument is the visible light semiconductor laser, and laser beam expanding, obtaining the angle of divergence is the light beam below the milliradian by interior inverted telescope; It all is isosceles Gaussian distribution that the output laser intensity meets the X-Y bidimensional;
Described monitoring light blocks to be blocked by center logical light circle tubular light and constitutes, and the diameter of light hole equals the diameter through position to be monitored laser beam; Diameter that monitoring light blocks and length ratio cooperate to turn to the adjustment mirror that laser beam is passed through in the tunnel bend greater than 1;
Laser pickoff drives monitoring of detection alarm device and warning with laser signal reception the becoming electric signal of laser instrument.
2. be used to monitor the laser measurement system of tunnel deformation according to claim 1; It is characterized in that: in described monitoring light blocks, be provided with two pairs of parts that parallel mirror blocks as light apart; Have four reflectings surface; Mirror surface is parallel each other in twos, and the optical axis of pair of parallel reflecting surface is vertical with another optical axis to parallel reflective mirror.
3. the laser measurement system that is used to monitor tunnel deformation as claimed in claim 2; It is characterized in that: the mirror surface of monitoring light in blocking is respectively: 45 ° of incident angle incident minute surfaces and 45 ° of parallel minute surfaces of incident angle incident are parallel reflective mirror each other; 45 ° of incident angle outgoing minute surfaces and 45 ° of parallel minute surfaces of incident angle outgoing are parallel reflective mirror each other, and the optical axis of these two pairs of parallel reflective mirrors is 90 ° of layouts.
4. according to claim 1 or claim 2 the laser measurement system that is used to monitor tunnel deformation is characterized in that: have bend with the road in, can turn to adjustment mirror and monitoring light to block to unite to use through one or several and realize that laser beam passes through bend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205172612U CN202350752U (en) | 2011-12-13 | 2011-12-13 | Laser measuring system used for monitoring tunnel deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205172612U CN202350752U (en) | 2011-12-13 | 2011-12-13 | Laser measuring system used for monitoring tunnel deformation |
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| CN202350752U true CN202350752U (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011205172612U Expired - Lifetime CN202350752U (en) | 2011-12-13 | 2011-12-13 | Laser measuring system used for monitoring tunnel deformation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494628A (en) * | 2011-12-13 | 2012-06-13 | 吉林省明普光学科技有限公司 | Laser measuring method and laser measuring device for tunnel deformation |
| CN105089700A (en) * | 2015-08-10 | 2015-11-25 | 苏州欧可罗电子科技有限公司 | Mining safety monitoring system |
| CN110108215A (en) * | 2019-06-12 | 2019-08-09 | 苏州龙杰特种纤维股份有限公司 | Displacement detector between a kind of transmission device connecting shaft |
| CN112985352A (en) * | 2021-05-17 | 2021-06-18 | 湖南久钰电子有限公司 | Box girder monitoring method and system, electronic equipment and storage medium |
| CN113340225A (en) * | 2021-06-15 | 2021-09-03 | 华北水利水电大学 | Tunnel deformation monitoring system and monitoring method based on laser displacement detection device |
-
2011
- 2011-12-13 CN CN2011205172612U patent/CN202350752U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494628A (en) * | 2011-12-13 | 2012-06-13 | 吉林省明普光学科技有限公司 | Laser measuring method and laser measuring device for tunnel deformation |
| CN105089700A (en) * | 2015-08-10 | 2015-11-25 | 苏州欧可罗电子科技有限公司 | Mining safety monitoring system |
| CN110108215A (en) * | 2019-06-12 | 2019-08-09 | 苏州龙杰特种纤维股份有限公司 | Displacement detector between a kind of transmission device connecting shaft |
| CN112985352A (en) * | 2021-05-17 | 2021-06-18 | 湖南久钰电子有限公司 | Box girder monitoring method and system, electronic equipment and storage medium |
| CN113340225A (en) * | 2021-06-15 | 2021-09-03 | 华北水利水电大学 | Tunnel deformation monitoring system and monitoring method based on laser displacement detection device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |
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| CX01 | Expiry of patent term |