CN113074653B - Tunnel section deformation monitoring device - Google Patents
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- CN113074653B CN113074653B CN202110351916.1A CN202110351916A CN113074653B CN 113074653 B CN113074653 B CN 113074653B CN 202110351916 A CN202110351916 A CN 202110351916A CN 113074653 B CN113074653 B CN 113074653B
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 16
- 238000012545 processing Methods 0.000 claims abstract description 75
- 238000005259 measurement Methods 0.000 claims abstract description 27
- 238000004364 calculation method Methods 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims description 36
- 230000002159 abnormal effect Effects 0.000 claims description 9
- 238000000151 deposition Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 description 12
- 230000009286 beneficial effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 3
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- 239000000428 dust Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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Abstract
The invention relates to the field of equipment for measuring solid deformation, in particular to a tunnel section deformation monitoring device which comprises a mounting seat, wherein an alarm unit, a processing unit and a plurality of laser ranging units are arranged on the mounting seat, the laser ranging units are matched with a plurality of reflecting units positioned on the inner wall of a tunnel, and the reflecting units are radially distributed along the tunnel; the laser ranging unit transmits a measuring signal to the reflecting unit and receives a reflected echo signal, the laser ranging unit transmits the echo signal to the processing unit, and the processing unit calculates a distance value according to the echo signal; the processing unit takes the distance value calculated for the first time as a reference value, the processing unit obtains a difference value by subtracting the distance value corresponding to the laser ranging unit obtained by subsequent calculation from the corresponding reference value, the processing unit judges whether the difference value is located in a settlement range, and if not, the processing unit sends an alarm signal to the alarm unit to give an alarm. The invention improves the measurement efficiency and the comparability of the distance value.
Description
Technical Field
The invention relates to the field of equipment for measuring solid deformation, in particular to a tunnel section deformation monitoring device.
Background
Tunnels are engineering buildings buried in the ground, and include traffic tunnels, mine tunnels, hydraulic tunnels and the like. The tunnel is used for communicating two areas for people and vehicles to pass through or carrying articles, so the deformation monitoring of the tunnel is very important and is related to the safety of the people and vehicles or the carrying articles. The tunnel is being built in the use, all need carry out deformation monitoring, and at present, deformation monitoring to the tunnel is generally through pasting the reflector plate in tunnel inner wall department of needing to monitor, then uses the total powerstation to monitor. The monitoring method only aims at one point to carry out measurement, the monitoring efficiency is low, and the contrast of the monitoring result is poor.
Disclosure of Invention
The invention aims to provide a tunnel section deformation monitoring device to solve the problems of low monitoring efficiency and poor contrast of the existing monitoring method.
The tunnel section deformation monitoring device comprises a mounting seat, wherein an alarm unit, a processing unit and a plurality of laser ranging units are arranged on the mounting seat, the laser ranging units are uniformly distributed on the same arc line of the mounting seat, the laser ranging units are matched with a plurality of reflecting units positioned on the inner wall of a tunnel, and the reflecting units are distributed along the radial direction of the tunnel;
the laser ranging unit transmits a measuring signal to the reflecting unit and receives a reflected echo signal, the laser ranging unit transmits the echo signal to the processing unit, and the processing unit calculates a distance value according to the echo signal; the processing unit stores the first calculated distance values of the laser ranging units into a group of reference values, the processing unit makes a difference between the distance value corresponding to the laser ranging unit obtained through subsequent calculation and the corresponding reference value to obtain a difference value, the processing unit judges whether the difference value is located in a settlement range, and when the difference value is located outside the settlement range, the processing unit sends an alarm signal to the alarm unit to give an alarm.
The beneficial effect of this scheme is:
the installation seat is provided with the plurality of laser ranging units, the plurality of laser ranging units respectively transmit measuring signals to the reflecting units and receive reflected echo signals, the processing unit calculates distance values according to the echo signals and takes the distance values obtained by the first calculation as reference values, the first calculation refers to the calculation of the processing unit at the initial time of any tunnel, the distance values measured for the first time of the tunnel are taken as the reference values, the initial state of the tunnel is taken as reference values, in the subsequent measurement, the reference values and the measured distance values are differed to judge whether the deformation of the tunnel is located in a settlement range, and an alarm is given in the abnormal time.
The processing unit is used for sending the echo signal to the recognition unit, the recognition unit is used for recognizing the echo intensity value of the echo signal and sending the echo intensity value to the processing unit, the processing unit is used for comparing the echo intensity value with preset intensity, when the echo intensity value is smaller than the preset intensity, the processing unit judges that the position of the reflection unit is abnormal and temporarily stops calculating the distance value, and when the echo intensity value is larger than the preset intensity, the processing unit calculates the distance value according to the echo signal.
The beneficial effects are that: the echo intensity value of echo signal is discerned to compare with intensity of predetermineeing, when echo intensity value of echo signal reached the demand, just calculate the distance value, prevent that the distance value that reflection unit position anomaly caused is unusual, improve the accuracy that the distance value calculated.
Furthermore, still including being located the regulation track on the tunnel inner wall, a plurality of containers of depositing the reflection unit have set firmly on the regulation track, be equipped with the adjustment mechanism who adjusts the reflection unit position on the regulation track, reflection unit fixed mounting is on adjustment mechanism, adjustment mechanism drives the reflection unit and gets into in the container.
The beneficial effects are that: before deformation monitoring is not carried out, the reflecting unit can be positioned in the accommodating box, and dust accumulated on the reflecting unit is reduced.
Further, adjustment mechanism includes motor, lead screw and a plurality of spacing seat, the motor drives the lead screw and rotates, the lead screw rotates to be connected on the regulation track, spacing threaded connection of seat is on the lead screw, the reflection unit sets firmly on spacing seat, spacing head has set firmly on the spacing seat, spacing head sliding fit is on the regulation track.
The beneficial effects are that: the motor through adjustment mechanism drives the lead screw and rotates, and spacing seat can not rotate under the limiting displacement of spacing head, can let spacing seat remove along adjusting the track simultaneously, reaches the purpose of adjusting the reflection unit position, is convenient for adjust the position when using the reflection unit, improves position control's accuracy.
Furthermore, a detection unit is arranged on the reflection unit and used for detecting the position information of the laser ranging unit and sending the position information to the processing unit, the processing unit sends a rotation signal to the motor according to the position information, and the motor drives the screw rod to rotate for a preset number of turns according to the rotation signal.
The beneficial effects are that: through the position information who detects laser rangefinder unit, let processing unit send actuating signal to the motor according to position information for the motor drives the lead screw and rotates and predetermine the number of turns, with can convey reflection unit and carry out deformation detection on predetermineeing the position, the position real-time regulation of deformation unit improves the suitability.
Further, a detection hole is formed in the center of the reflection unit, a detection cylinder for accommodating the detection unit is fixedly arranged on the inner wall of the detection hole, the detection unit is completely located in the detection cylinder, the detection unit detects a measurement intensity value of the measurement signal, the processing unit compares the measurement intensity value with a preset value, and when the measurement intensity value is smaller than the preset value, the processing unit judges that the position of the reflection unit is abnormal and sends a position adjusting signal to the motor.
The beneficial effects are that: the measuring unit in the detecting cylinder is used for detecting the measuring intensity value of the measuring signal, and when the measuring intensity value is small, namely the measuring signal is not projected onto the reflecting unit, the position abnormality of the reflecting unit is judged and adjusted, so that the accuracy of the detecting result is improved.
Further, still including being located the vibration sensing unit on the tunnel inner wall, the vibration sensing unit is located the preset distance department with the reverse side of laser ranging unit orientation vehicle, the vibration sensing unit detects the vibration value and sends to processing unit, processing unit compares the vibration value with the threshold value, and when the vibration value was greater than the threshold value, processing unit obtained detecting element's measurement intensity value.
The beneficial effects are that: because the inside vibration can arouse when large truck or heavy goods vehicle travel in the tunnel, detect the vibration value through vibration sensing unit to the signal when the vibration value is greater than the threshold value is as large truck or heavy goods vehicle's detection volume, and triggers processing unit and obtains detecting element's measurement intensity value and judge, prevents that the actual environment of traveling in the tunnel from causing detection error.
Drawings
Fig. 1 is a schematic perspective view of a tunnel section deformation monitoring device according to a first embodiment of the present invention;
fig. 2 is a logic block diagram of a tunnel section deformation monitoring apparatus according to a first embodiment of the present invention;
FIG. 3 is a front view of an adjusting track in the tunnel section deformation monitoring device according to the first embodiment of the present invention;
fig. 4 is a radial cross-sectional view of an adjusting track in a tunnel section deformation monitoring device according to an embodiment of the present invention.
Detailed Description
The following is a detailed description of the preferred embodiments.
Reference numerals in the drawings of the specification include: the device comprises a mounting seat 1, a processing unit 2, a laser ranging unit 3, an identification unit 4, an adjusting track 5, an accommodating box 6, a screw rod 7, a motor 8, a seat 9, a limiting seat 10, a limiting head 11 and a reflection unit 12.
Example one
The tunnel section deformation monitoring device is shown in figures 1 and 2: including mount pad 1, mount pad 1 is placed the tunnel through the tripod and is used, installs alarm unit, processing unit 2, recognition unit 4 and a plurality of laser ranging unit 3 on the mount pad 1, and laser ranging unit 3 evenly distributed is on the same arc of mount pad 1, and laser ranging unit 3 can use current infrared laser emitter.
As shown in fig. 3 and 4, the laser ranging unit 3 is provided with a plurality of reflection units 12 on the inner wall of the tunnel in a matching manner, and further comprises an adjusting track 5 on the inner wall of the tunnel, the radial section of the adjusting track 5 is concave, the adjusting track 5 can be fixed on the inner wall of the tunnel through screws, a plurality of accommodating boxes 6 for storing the reflection units 12 are welded on the adjusting track 5, and the positions of the accommodating boxes 6 are fixed in advance according to points to be measured; the adjusting track 5 is provided with an adjusting mechanism for adjusting the position of the reflecting unit 12, the reflecting unit 12 is fixedly arranged on the adjusting mechanism, the adjusting mechanism drives the reflecting unit 12 to enter the accommodating box 6, specifically, the adjusting mechanism comprises a motor 8, a lead screw 7 and a plurality of limiting seats 10, the motor 8 is fixedly arranged at any end of the adjusting track 5 through screws and mounting sheets, one end of the lead screw 7 is welded on an output shaft of the motor 8, the motor 8 drives the lead screw 7 to rotate, the lead screw 7 is rotatably connected on the adjusting track 5, namely, the rotating connection is carried out by allowing the lead screw 7 to penetrate through the accommodating box 6 in an empty sleeve mode, the limiting seats 10 are in threaded connection on the lead screw 7, the reflecting unit 12 is bonded on the limiting seats 10, if the reflecting unit 12 is bonded on one side of the limiting seat 10 facing the laser ranging unit 3, a limiting head 11 is welded on the limiting seat 10, a seat 9 is welded on one side of the limiting seat 10 facing away from the accommodating box 6, namely, the seat 9 firstly moves towards one side outside the accommodating box 6 when the lead screw 7 rotates, the limiting head 11 is welded on the seat 9, the limiting head 11 is in sliding fit on the adjusting track 5, the end of the adjusting track, and the end of the tunnel 12 is radially matched with the end of the tunnel.
The laser ranging unit 3 transmits a measurement signal to the reflection unit 12 and receives a reflected echo signal, the measurement signal is an optical signal transmitted by the laser ranging unit 3, the laser ranging unit 3 transmits the echo signal to the processing unit 2, the processing unit 2 calculates a distance value according to the echo signal, and the calculation of the distance value according to the echo signal is prior art and is not described herein; the processing unit 2 stores the first calculated distance values of the laser ranging units 3 as a group of reference values, the first calculation refers to a first measured value when the device is at a preset measuring position, the processing unit 2 makes a difference between the distance value corresponding to the laser ranging unit 3 obtained by subsequent calculation and the corresponding reference value to obtain a difference value, the processing unit 2 judges whether the difference value is located in a settlement range, the settlement range is a normal settlement range of the tunnel, when the difference value is located outside the settlement range, the processing unit 2 sends an alarm signal to an alarm unit for alarming, and the alarm unit can be an audible light alarm.
The processing unit 2 sends the echo signal to the identification unit 4, the identification unit 4 identifies the echo intensity value of the echo signal and sends the echo intensity value to the processing unit 2, the identification unit 4 can use the existing light intensity identification algorithm to identify the forced value, the processing unit 2 compares the echo intensity value with the preset intensity, when the echo intensity value is smaller than the preset intensity, the processing unit 2 judges that the position of the reflection unit 12 is abnormal and stops calculating the distance value, and when the echo intensity value is larger than the preset intensity, the processing unit 2 calculates the distance value according to the echo signal.
The specific implementation process is as follows:
when the deformation monitoring of the tunnel section is carried out, the control unit controls the motor 8 to drive the screw rod 7 to rotate, and the limiting head 11 on the limiting seat 10 is in sliding fit in the adjusting guide rail to limit the limiting seat 10 in the rotating direction, so that the limiting seat 10 cannot rotate along with the screw rod 7, but the threaded connection relationship between the limiting seat 10 and the screw rod 7 can enable the limiting seat 10 to move along the adjusting rail 5, and the limiting seat 10 drives the reflection unit 12 to move out of the accommodating box 6 and reach a preset position; the laser ranging units 3 respectively transmit measuring signals to the reflecting unit 12, receive reflected echo signals, acquire the echo signals by the processing unit 2, allow the identification unit 4 to identify echo intensity values of the echo signals, compare the echo intensity values with preset intensity by the processing unit 2, when the echo intensity values are smaller than the preset value, the processing unit 2 judges that the position of the reflecting unit 12 is abnormal and sends a position adjusting signal to the motor 8, so as to adjust the position of the reflecting unit 12 to monitor and allow the reflecting unit 12 to be located at the measuring position of the laser ranging unit 3; the processing unit 2 calculates a distance value according to the echo signal, the distance value obtained by the first calculation is used as a reference value, the first calculation refers to a calculation value when the processing unit 2 is at any tunnel initially, the distance value measured for the first time of the tunnel is used as a reference value, the state of the tunnel at the initial time is used as a reference, when the subsequent measurement is carried out, the difference between the reference value and the measured distance value is used for judging whether the deformation of the tunnel is located in a settlement range, and an alarm is given when the deformation is abnormal, the plurality of laser ranging units 3 can simultaneously carry out distance values at a plurality of positions and are compared with the distance value at the initial time, the measurement efficiency and the comparability of the distance value are improved, the positions of the plurality of laser ranging units 3 are fixed, and the inaccurate reflection unit 12 cannot be caused by aging or damage of rotating parts and the like.
Example two
The difference from the first embodiment is that a detection unit is installed on the reflection unit 12, the detection unit is used for detecting the position information of the laser ranging unit 3 and sending the position information to the processing unit 2, the processing unit 2 sends a rotation signal to the motor 8 according to the position information, the motor 8 drives the screw rod 7 to rotate for a preset number of turns according to the rotation signal, specifically, a detection hole is formed in the center of the reflection unit 12, and the diameter of the detection hole is based on the fact that the reflection of the reflection unit 12 on the measurement signal of the laser ranging unit 3 is not influenced; a detection cylinder for accommodating the detection unit is bonded on the inner wall of the detection hole, the detection unit is completely positioned in the detection cylinder, and the detection unit detects the measurement intensity value of the measurement signal; the device also comprises a vibration sensing unit positioned on the inner wall of the tunnel, wherein the vibration sensing unit is positioned at a preset distance from the laser ranging unit 3 to the reverse side of the vehicle, the vibration sensing unit detects a vibration value and sends the vibration value to the processing unit 2, the processing unit 2 compares the vibration value with a threshold value, and when the vibration value is greater than the threshold value, the processing unit 2 obtains a measurement intensity value of the detection unit; the processing unit 2 compares the measured intensity value with a preset value, and when the measured intensity value is smaller than the preset value, the processing unit 2 judges that the position of the reflecting unit 12 is abnormal and sends a position adjusting signal to the motor 8.
Because the inside vibration can be caused when a large truck or a heavy truck in the tunnel runs, in the deformation monitoring process of the tunnel section, the vibration value is detected through the vibration sensing unit, a signal when the vibration value is larger than a threshold value is used as the detection quantity of the large truck or the heavy truck, the measurement strength value of the measurement signal is detected through the detection unit in the detection cylinder, the processing unit 2 is triggered to obtain the measurement strength value of the detection unit for judgment, the detection error caused by the actual running environment in the tunnel is prevented, when the measurement strength value is small, namely the measurement signal is not projected onto the reflection unit 12, the position of the reflection unit 12 is judged to be abnormal and adjusted, and the accuracy of the detection result is improved.
The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics in the schemes is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several variations and modifications can be made, which should also be considered as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the utility of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (6)
1. The utility model provides a tunnel section deformation monitoring devices, includes the mount pad, be equipped with alarm unit, processing unit and a plurality of laser rangefinder unit on the mount pad, its characterized in that: the laser ranging units are uniformly distributed on the same arc line of the mounting seat, a plurality of reflecting units positioned on the inner wall of the tunnel are matched with the laser ranging units, and the reflecting units are distributed along the radial direction of the tunnel;
the laser ranging unit transmits a measuring signal to the reflecting unit and receives a reflected echo signal, the laser ranging unit transmits the echo signal to the processing unit, and the processing unit calculates a distance value according to the echo signal; the processing unit stores the first calculated distance values of the plurality of laser ranging units as a group of reference values, the processing unit makes a difference between the distance value corresponding to the laser ranging unit obtained by subsequent calculation and the corresponding reference value to obtain a difference value, the processing unit judges whether the difference value is positioned in a settlement range, and when the difference value is positioned outside the settlement range, the processing unit sends an alarm signal to the alarm unit to alarm;
still include the recognition cell, processing unit sends echo signal to the recognition cell, recognition cell discerns echo intensity value of echo signal and sends processing unit, processing unit compares echo intensity value and intensity of predetermineeing, and when echo intensity value was less than intensity of predetermineeing, processing unit judges that the reflection unit position is unusual and pause and calculate the distance value, and when echo intensity value was greater than intensity of predetermineeing, processing unit calculates the distance value according to echo signal.
2. The tunnel section deformation monitoring device according to claim 1, characterized in that: still including being located the regulation track on the tunnel inner wall, it has set firmly a plurality of containers of depositing the reflection unit to adjust on the track, be equipped with the adjustment mechanism who adjusts the reflection unit position on adjusting the track, reflection unit fixed mounting is on adjustment mechanism, adjustment mechanism drives the reflection unit and gets into in the container.
3. The tunnel section deformation monitoring device of claim 2, wherein: the adjusting mechanism comprises a motor, a screw rod and a plurality of limiting seats, the motor drives the screw rod to rotate, the screw rod is connected to the adjusting track in a rotating mode, the limiting seats are in threaded connection with the screw rod, the reflecting units are fixedly arranged on the limiting seats, limiting heads are fixedly arranged on the limiting seats, and the limiting heads are in sliding fit with the adjusting track.
4. The tunnel section deformation monitoring device of claim 3, wherein: the laser ranging device is characterized in that a detection unit is arranged on the reflection unit and used for detecting position information of the laser ranging unit and sending the position information to a processing unit, the processing unit sends a rotation signal to a motor according to the position information, and the motor drives a screw rod to rotate for a preset number of turns according to the rotation signal.
5. The tunnel section deformation monitoring device of claim 4, wherein: the center of the reflection unit is provided with a detection hole, a detection cylinder for accommodating the detection unit is fixedly arranged on the inner wall of the detection hole, the detection unit is completely positioned in the detection cylinder, the detection unit detects the measurement intensity value of the measurement signal, the processing unit compares the measurement intensity value with a preset value, and when the measurement intensity value is smaller than the preset value, the processing unit judges that the position of the reflection unit is abnormal and sends a position adjusting signal to the motor.
6. The tunnel section deformation monitoring device of claim 4, wherein: still including being located the vibration sensing unit on the tunnel inner wall, the vibration sensing unit is located the preset distance department with the reverse side of laser range unit orientation vehicle, the vibration sensing unit detects the vibration value and sends to processing unit, processing unit compares the vibration value with the threshold value, and when the vibration value was greater than the threshold value, processing unit acquires detecting element's measurement intensity value.
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| CN211717407U (en) * | 2020-05-09 | 2020-10-20 | 招商局重庆交通科研设计院有限公司 | Two-dimensional surface deformation measuring radar and measuring system thereof |
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| JP3457894B2 (en) * | 1998-10-02 | 2003-10-20 | 三菱重工業株式会社 | Optical fiber laying method and strain detecting device using optical fiber |
| CN104301461B (en) * | 2014-09-26 | 2017-08-11 | 广东欧珀移动通信有限公司 | The detection method and device of a kind of equipment leather sheath state |
| CN105423936B (en) * | 2015-12-04 | 2018-04-27 | 上海市地下空间设计研究总院有限公司 | A kind of fully-automatic laser tunnel cross section convergence instrument and measuring method |
| CN207963805U (en) * | 2018-01-28 | 2018-10-12 | 湖北煤炭地质物探测量队 | A kind of Tunnel Engineering deformation monitoring device |
| CN110514126A (en) * | 2019-09-30 | 2019-11-29 | 西南石油大学 | A method of the tunnel tunnel face displacement monitoring based on machine vision |
| CN211717389U (en) * | 2020-01-16 | 2020-10-20 | 广东电网有限责任公司佛山供电局 | Novel tunnel deformation monitoring combined measuring point device |
| CN212843525U (en) * | 2020-07-27 | 2021-03-30 | 重庆六零七工程勘察设计有限公司 | House settlement monitoring device |
| CN112415528B (en) * | 2020-10-26 | 2024-02-27 | 福建省交通规划设计院有限公司 | Tunnel deformation on-line monitoring system and detection control method thereof |
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| CN111457962A (en) * | 2020-05-09 | 2020-07-28 | 同济大学 | Rapid detection method and detection device for tunnel internal diseases |
| CN211717407U (en) * | 2020-05-09 | 2020-10-20 | 招商局重庆交通科研设计院有限公司 | Two-dimensional surface deformation measuring radar and measuring system thereof |
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