Displacement monitoring method and device in engineering
阅读说明：本技术 一种工程上的位移监测方法及设备 (Displacement monitoring method and device in engineering ) 是由 张洪奎 徐江桥 刘道乾 孙伟 郭爱玲 杨冬 丁斯江 李望 彭正嵬 于 2020-07-07 设计创作，主要内容包括：本申请提出一种工程上的位移监测方法及设备,方法包括：激光发射装置接收预设指令,以第一预设脉冲波形发射十字条带激光束；激光感应标靶接收所述十字条带激光束,读取十字条带上若干个点的坐标值,根据所述坐标值确定所述十字条带交点的位置信息,并发送到激光发射装置,以便激光发射装置将所述十字条带交点的位置信息发送到远程平台,以通过远程平台监测地质位移,本申请提出的位移监测方法通过发射十字激光束配合感应标靶的取点计算能够提高工程上大距离位移监测的精度。(The application provides a displacement monitoring method and equipment in engineering, wherein the method comprises the following steps: the laser emitting device receives a preset instruction and emits a cross-shaped strip laser beam in a first preset pulse waveform; the laser induction target receives the cross strip laser beam, reads the coordinate values of a plurality of points on the cross strip, determines the position information of the cross strip intersection point according to the coordinate values, and sends the position information to the laser emission device, so that the laser emission device sends the position information of the cross strip intersection point to the remote platform, and geological displacement is monitored through the remote platform.)
1. A method of monitoring displacement in an engineering, the method comprising:
the laser emitting device receives a preset instruction and emits a cross-shaped strip laser beam in a first preset pulse waveform;
the laser induction target receives the cross strip laser beam, reads coordinate values of a plurality of points on the cross strip, determines position information of the cross strip intersection point according to the coordinate values, and sends the position information to the laser emitting device, so that the laser emitting device sends the position information of the cross strip intersection point to the remote platform, and geological displacement is monitored through the remote platform.
2. The method for monitoring the engineering displacement according to claim 1, wherein:
the laser induction target is a digital target and is used for inducing and outputting a coordinate value of a laser projection position; and the digital target is provided with coordinate axes.
3. The method as claimed in claim 1, wherein the laser sensing target receives the cross-shaped laser beam, reads coordinate values of a plurality of points on a cross-shaped strip, and determines position information of an intersection point of the cross-shaped strip according to the coordinate values, specifically comprising:
the laser induction target receives a cross strip laser beam and outputs coordinate values of a plurality of points on a cross strip projected on a target surface in a digital form, wherein the points on the strip are symmetrical;
and determining the position coordinates of the cross strip intersection points according to the coordinate values.
4. An engineering displacement monitoring method according to claim 1,
the laser emitting device adopts a cross-shaped strip grating and is used for emitting cross-shaped strip laser beams.
5. The method for monitoring displacement in engineering according to claim 1, wherein the laser emitting device receives a preset command, emits a cross-shaped laser beam in a first preset pulse waveform, and specifically comprises:
the laser emitting device emits laser when receiving the preset pulse command as a first level according to a preset pulse command, and stops emitting the laser when receiving a second level; wherein, the second level is the low level when the first level is the high level; the second level is high when the first level is low.
6. The method for monitoring engineering displacement according to claim 1, wherein the remote platform monitors geological displacement, and specifically comprises:
the remote platform draws a motion curve of the target point according to the received position information of the intersection point of the cross strip and the time sequence so as to determine the displacement of the monitored geology according to the motion curve; the motion curve reflects geological displacement conditions on the project.
7. The method of claim 1, further comprising:
a vibration sensor is arranged in the laser emitting device;
when the vibration sensor detects that the vibration frequency of the laser emitting device reaches or is higher than a first preset threshold value, the laser emitting device stops working; and when the vibration frequency is lower than a first preset threshold value, the laser emitting device is in a working state.
8. The method of claim 1, further comprising:
the laser emission device is characterized in that a meteorological sensor is arranged inside the laser emission device and used for monitoring one or more parameters of atmospheric pressure, humidity, precipitation, temperature, wind speed and wind direction around the laser emission device in real time, and when the one or more parameters reach corresponding preset conditions, the laser emission device stops working.
9. The displacement monitoring method of claim 1, further comprising:
the laser emitting device and the laser induction target are communicated in a short-distance wireless communication mode;
and the laser emitting device is communicated with the remote platform in a mobile network communication mode.
10. An engineered displacement monitoring device, comprising:
the laser emitting device is used for receiving a preset instruction and emitting a cross-shaped strip laser beam in a first preset pulse waveform; and for sending the location information of the intersection of the cross strips to a remote platform;
and the laser induction target is used for receiving the cross strip laser beam, reading coordinate values of a plurality of points on the cross strip, determining the position information of the cross strip intersection point according to the coordinate values and sending the position information to the laser emitting device.
Technical Field
The present disclosure relates to the field of displacement monitoring technologies, and in particular, to a method and an apparatus for monitoring displacement in engineering.
Background
The engineering site has complex and various terrains, and many areas are easy to have geological disasters such as landslide, collapse, debris flow and the like, so that geological landslide micro-displacement monitoring is needed to monitor the geological condition in real time, the possibility of geological landslide is predicted in advance, and prevention is carried out in advance.
The Beidou monitoring technology is a common technical means for geological displacement monitoring, but the Beidou monitoring technology has high cost and complex engineering deployment and change and needs the support of a reference station. The cost can be reduced by using a photoelectric displacement monitoring technology, engineering deployment and change are convenient, however, a common point source laser beam is dispersed along with the increase of the propagation distance along with the increase of the measurement distance, a laser point projected on a laser receiving device is too large, the accurate coordinate of a focus cannot be determined, and the precision of large-distance displacement monitoring is reduced.
Disclosure of Invention
In view of the problems in the prior art, the embodiments of the present invention provide a method and an apparatus for monitoring displacement in engineering, which solve the problem of low accuracy of monitoring displacement in large-distance engineering.
In one aspect, an embodiment of the present invention provides a method for monitoring displacement in engineering, where the method includes: the laser emitting device receives a preset instruction and emits a cross-shaped strip laser beam in a first preset pulse waveform; the laser induction target receives the cross strip laser beam, reads coordinate values of a plurality of points on the cross strip, determines position information of the cross strip intersection point according to the coordinate values, and sends the position information to the laser emitting device, so that the laser emitting device sends the position information of the cross strip intersection point to the remote platform, and geological displacement is monitored through the remote platform.
According to the embodiment of the invention, the laser emitting device emits the cross-shaped strip laser beam instead of the point laser beam, so that the projection projected on the laser induction target is in a cross-shaped strip shape after the laser beam is transmitted in a large distance; and then, a plurality of groups of points which are symmetrical on the cross strip are selected by the laser sensing target to output coordinate values, so that the accurate position of the intersection point of the cross strip is calculated, the position information of a laser point can be ensured to be accurately obtained after the laser beam is transmitted in a large distance, and the accuracy of large-distance displacement monitoring is improved.
In one embodiment, the laser sensing target is a digital target and is used for sensing and outputting coordinate values of a laser projection position; and the digital target is provided with coordinate axes.
In one embodiment, the laser sensing target receives a cross stripe laser beam from a laser emitting device, reads coordinate values of a plurality of points on a cross stripe, and determines position information of a cross stripe intersection point according to the coordinate values, specifically including: the laser induction target receives the cross-shaped strip laser beam and outputs coordinate values of a plurality of points on the cross-shaped strip projected on the target surface in a digital form, wherein the points on the strip are symmetrically selected; and determining the position coordinates of the cross strip intersection points according to the coordinate values.
In one embodiment, the laser emitting device employs a cross-stripe grating for emitting a cross-stripe laser beam.
In one embodiment, the cross-stripe laser beam is generated by the laser emitting device based on a first preset pulse waveform, specifically: the laser emitting device emits laser when receiving the preset pulse command as a first level according to a preset pulse command, and stops emitting the laser when receiving a second level; wherein, the second level is the low level when the first level is the high level; alternatively, the second level is a high level when the first level is a low level.
In one embodiment, the remote platform monitors geological displacement, and specifically comprises: the remote platform draws a motion curve of the target point according to the received position information of the intersection point of the cross strip and the time sequence so as to determine the displacement of the monitored geology according to the motion curve; the motion curve reflects geological displacement conditions on the project.
In one embodiment, a vibration sensor is arranged inside the laser emitting device; when the vibration sensor detects that the vibration frequency of the laser emitting device reaches or is higher than a first preset threshold value, the laser emitting device stops working; and when the vibration frequency is lower than a first preset threshold value, the laser emitting device is in a working state.
The embodiment of the application stops laser emission under the condition of overlarge vibration frequency by setting the vibration condition of the vibration sensor to monitor the laser emission device in real time, ensures that the laser emission device emits laser in a relatively stable state, and avoids the influence on monitoring precision caused by the fluctuation of the laser due to vibration.
In one embodiment, a meteorological sensor is arranged inside the laser emission device, the meteorological sensor is used for monitoring one or more parameters of atmospheric pressure, humidity, precipitation, temperature, wind speed and wind direction around the laser emission device in real time, and when the one or more parameters reach corresponding preset conditions, the laser emission device stops working.
The embodiment of the application stops laser emission through setting up meteorological sensor, the meteorological condition around the real-time supervision laser emitter under the condition that meteorological condition is abominable so that influence laser beam propagation, can guarantee that the laser beam of laser emitter transmission is not disturbed by external factors, influences the monitoring precision.
In one embodiment, the laser emitting device and the laser sensing target are communicated through a short-distance wireless communication mode; and the laser emitting device is communicated with the remote platform in a mobile network communication mode.
The embodiment of the application communicates through the close-range communication mode, can transmit a longer distance under the condition of low power consumption, and reduces the power consumption of the laser induction target while ensuring stable information transmission.
In another aspect, an embodiment of the present invention provides an engineering displacement monitoring device, where the device includes: the laser emitting device is used for receiving a preset instruction and emitting a cross-shaped strip laser beam in a first preset pulse waveform; the system is also used for sending the position information of the cross strip intersection point to a remote platform; and the laser induction target is used for receiving the cross strip laser beam, reading coordinate values of a plurality of points on the cross strip, determining the position information of the cross strip intersection point according to the coordinate values and sending the position information to the laser emitting device.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of an engineering displacement monitoring device according to an embodiment of the present disclosure;
fig. 2 is a flowchart of a method for monitoring engineering displacement according to an embodiment of the present disclosure;
fig. 3 is a schematic view of a cross-stripe laser beam projected onto a laser sensing target surface.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The large-scale engineering site is very likely to have landslide, debris flow and other geological disasters, and the damage caused by the geological disasters to the engineering is very huge, so that the real-time monitoring of the geological displacement of the engineering site, the early warning of the disaster and the early prevention of the disaster are of great significance. The most common existing geological displacement monitoring method is a Beidou monitoring technology, but the deployment and the position change of the Beidou monitoring technology are complex and depend on the support of a reference station. The photoelectric displacement monitoring technology can well avoid the problems, but the geological displacement is observed through laser propagation, one problem to be solved is the light divergence problem, and along with the increase of the distance, the projection point of the point-shaped laser beam can be gradually increased, so that the accurate projection position is difficult to determine.
In order to solve the problems, the embodiment of the invention provides a displacement monitoring method and equipment in engineering.
The technical solutions proposed in the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a displacement monitoring device in engineering according to an embodiment of the present disclosure, and as shown in fig. 1, the displacement monitoring device 100 includes a laser emitting device 110 and a laser sensing target 120. The laser emitting device 110 mainly comprises a laser head 111, a microprocessor 112, a weather sensor 113 and a vibration sensor 114. The laser sensing target 120 mainly comprises a laser
The microprocessor 112 is connected with the laser head 111, and the microprocessor 112 receives a preset pulse instruction and controls the laser head 111 to emit laser according to the pulse waveform. The laser head 111 adopts a cross grating structure, and the emitted laser beam is a cross stripe laser beam.
The laser sensing target 120 is installed at a place to be monitored, and the laser
Fig. 3 is a schematic view of a cross-stripe laser beam projected onto a laser sensing target surface.
As shown in FIG. 3, the cross-stripe laser beam is projected onto the laser
Meteorological sensors 113 are connected to microprocessor 112 to monitor in real time one or more parameters of atmospheric pressure, humidity, precipitation, temperature, wind speed and direction around laser emitting device 110. Each parameter is set to a predetermined condition, and when the weather is too severe to meet conditions that would interfere with laser emission, the microprocessor 112 issues a stop command, and the laser emitting device 110 suspends operation and resumes operation until the weather is stable.
The shock sensor 114 is connected to the microprocessor 112. The vibration sensor 114 is responsible for monitoring the vibration condition of the laser emitting device 110, when the vibration frequency exceeds a preset value and the laser cannot be stably emitted, the microprocessor 112 sends a command of stopping working, the laser emitting device 110 stops working temporarily, and when the vibration frequency is lower than the preset value, the laser emitting device 110 continues working again to ensure that the laser is stably emitted.
The laser emitting device 110 performs short-range communication with the second Lora communication module 123 of the laser sensing target 120 through the first Lora
Fig. 2 is a flowchart of a displacement monitoring method in engineering according to an embodiment of the present disclosure. And the displacement monitoring of accurate displacement monitoring is realized by calculating the projection intersection point position of the cross-shaped strip.
Specifically, the laser emitting device receives a preset pulse command and emits laser according to a pulse waveform.
In one example, the pulse is high level to emit laser light, and low level to emit no laser light. In another example, the pulse is low level to emit laser light, and high level to emit no laser light.
In one embodiment of the present application, the laser head of the laser emitting device adopts a cross grating structure, and the emitted laser beam is a cross stripe laser beam.
Specifically, a cross-stripe laser beam is projected onto the laser sensing target, forming a cross-stripe projection. The laser sensing target senses the projection position of the cross strip, a plurality of groups of symmetrical points on the projection position of the cross strip are selected according to a preset program, and a two-dimensional coordinate value is output.
And step 203, calculating the accurate coordinate of the cross point by the laser induction target according to the coordinate value.
And the laser induction target calculates the accurate position coordinates of the intersection point of the cross strip 1 according to the output coordinates of a plurality of groups of points on the cross strip.
And step 204, the laser induction target sends the accurate coordinate to a laser emitting device, and the laser emitting device sends the accurate coordinate to a remote platform.
Specifically, the laser sensing target transmits the calculated precise coordinates to the laser emitting device through Lora communication.
Communicate through the Lora communication mode between laser induction mark target and the laser emission device, the Lora communication can transmit the distance more under the low-power consumption condition, adopts the Lora communication can reduce the consumption of laser induction mark target when guaranteeing information stable transmission.
The laser emitting device and the remote platform communicate with each other in a mobile network communication mode.
And step 205, drawing a target point motion curve by the remote platform according to the coordinates so as to observe the geological displacement condition.
Specifically, the remote platform draws a motion curve of the cross intersection point according to the received position information of the cross strip intersection point and the time sequence, and the motion curve can reflect the geological displacement condition in engineering. The staff analyzes the geological change situation of the engineering field by observing the motion curve, and timely makes a judgment, so that the occurrence of disasters can be prevented in advance, and the engineering loss caused by natural disasters is reduced.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application. It should be noted that various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement and the like made without departing from the principle of the present invention shall be included in the scope of the claims of the present application.
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