CN112240761A - Laser hydrostatic level automatic monitoring system and monitoring method - Google Patents
Laser hydrostatic level automatic monitoring system and monitoring method Download PDFInfo
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- CN112240761A CN112240761A CN202011291189.6A CN202011291189A CN112240761A CN 112240761 A CN112240761 A CN 112240761A CN 202011291189 A CN202011291189 A CN 202011291189A CN 112240761 A CN112240761 A CN 112240761A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
- G01C5/04—Hydrostatic levelling, i.e. by flexibly interconnected liquid containers at separated points
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Abstract
The invention relates to the field of a transmitting device, a receiving and collecting device, an analysis and analysis processing program of point laser, in particular to a laser static leveling automatic monitoring system and a monitoring method, wherein the monitoring device comprises a laser transmitting device, a signal receiving device and a data processing device, the laser emitting device comprises an independent laser emitter and a displacement balance regulator, the independent laser emitter is arranged on the displacement balance regulator, the displacement balance regulator can automatically adjust the emitting angle of the independent laser emitter, and the data processing device can better distinguish the laser center emitted by the laser emitter, can realize the requirement of automatic real-time measurement, is less influenced by external environmental factors, and has more accurate and reliable measured data, thereby overcoming the defect that the liquid in the traditional static level meter pipeline can not be measured in real time due to balance.
Description
Technical Field
The invention relates to the field of a transmitting device, a receiving and collecting device, an analysis and analysis processing program and the like of point laser, in particular to a laser static leveling automatic monitoring system and a monitoring method.
Background
The static force level gauge is a precision instrument for measuring height difference and change thereof, the traditional static force level gauge mainly adopts a high-precision liquid level measuring system to measure multipoint relative settlement, the gauge consists of a series of containers containing liquid level sensors, and a plurality of containers are connected together by a communicating pipe full of liquid. The reference container is located at a stable reference point, and a change in elevation between any one container and the reference container will cause a change in the liquid level in the corresponding container. The elevation change of the measuring point can be obtained by measuring the liquid level change, and the method is mainly used for monitoring the vertical displacement of pipe galleries, dams, nuclear power stations, high-rise buildings, foundation pits, tunnels, bridges, subways and the like. However, in practical application, due to the viscous action of liquid, the liquid inside the static level pipe of the traditional static level can only flow and balance in a time period, and then, in the time period, the high-speed measurement of the sedimentation variation cannot be realized, so that the traditional static level has certain limitation in practical application.
In recent years, due to the technical progress, magnetostrictive, differential pressure and other technologies are adopted to be applied to the static leveling system. However, these methods do not directly measure the length, but measure the displacement by converting the electrical signal, and are easily interfered by external electromagnetic interference.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a static level which is not easy to be interfered.
In order to achieve the purpose, the laser static leveling automatic monitoring system is designed, and comprises a laser emitting device, a signal receiving device and a data processing device, and is characterized in that the laser emitting device comprises an independent laser emitter and a displacement balance adjuster, the independent laser emitter is mounted on the displacement balance adjuster, the displacement balance adjuster comprises a horizontal adjusting disc, a vertical adjusting screw and a plumb bob controller, a chute is arranged on the horizontal adjusting disc and used for enabling the independent laser emitter to rotate left and right to adjust the horizontal position, the vertical adjusting screw is respectively connected with the independent laser emitter and the horizontal adjusting disc, the vertical adjusting screw comprises two heightening screws, the vertical emitting angle of the independent laser emitter is controlled by adjusting the height difference between the two heightening screws, and the plumb bob controller is mounted on the horizontal adjusting disc, the laser emitter is used for automatically balancing the independent laser emitter according to the influence of the external environment on the laser emitter.
The invention also has the following preferable technical scheme:
further, laser emission device still includes the base, the plummet controller is installed in the base, the plummet controller includes roof, cross and plummet, the cross passes through the bearing and rotates the connection on the base lateral wall, the plummet includes interconnect's screw rod and pouring weight, the screw rod is connected on the cross, the roof is installed on the bearing frame of bearing.
Furthermore, a rotating shaft is further arranged on the top plate and connected with the screw rod, a middle shaft is further arranged on the top plate, and the rotating shaft is connected with the horizontal adjusting disc through the middle shaft.
Further, the laser emitting device further comprises a power supply, and the power supply is used for supplying power to the independent laser emitter.
Furthermore, a control circuit board is installed in the signal receiving device and used for data acquisition, data verification, data storage, data communication and internet connection, and the control of the measurement process is realized through interaction of the control circuit board and the data processing device.
Furthermore, the signal receiving device further comprises an industrial camera, wherein the industrial camera is connected with the control circuit board and used for converting the laser signals emitted by the independent laser emitters into image signals and transmitting the image signals to the data processing device through the control circuit board.
Further, the data processing device is used for processing the data collected by the signal receiving device and calculating the relative displacement.
In another aspect of the present invention, the present invention further relates to an automatic monitoring method for laser static leveling, which comprises the following steps:
s1, the laser emitting device emits laser to the signal receiving device, and the data processing device is used for calibration to obtain reference data;
s2, after the calibration is completed, the laser emitting device is automatically leveled, the balance state of the laser emitting device is ensured, the measurement is carried out, and the signal receiving device receives the measurement image;
and S3, the signal receiving device sends the measurement image to a data processing device, and the measurement image is compared with the reference data after being processed by the data processing device to obtain a relative displacement measurement result.
Further, the step of calibrating the data processing apparatus includes:
and S11, acquiring the laser reference spot center through the boundary of the laser spot.
Further, the step of processing the measurement data by the data processing apparatus includes:
s31, the data processing device carries out digital image processing on the measurement image acquired by the signal receiving device, the outline and the center of the light spot are calculated through an algorithm, the information of the center of the light spot at different measurement moments is compared, and the relative position change of the center of the light spot at this time, the center of the light spot at the last time and the center of the reference light spot is calculated, so that the relative horizontal and vertical displacement change of the opposite end and the home end is obtained;
advantageous effects of the invention
The laser hydrostatic level automatic monitoring system and the monitoring method provided by the invention have the advantages that the monitoring method is not limited to the following steps:
(1) the automatic monitoring system for the static level can meet the requirement of automatic real-time measurement, and overcomes the defect that the liquid in the traditional static level instrument pipeline cannot be measured in real time due to balance.
(2) The automatic monitoring equipment based on the laser static leveling can measure the relative vertical displacement and the relative horizontal displacement between two points, and a three-dimensional coordinate system is formed by sensing the distance between the two points through laser.
(3) The monitoring efficiency is greatly improved through an improved system, a data processing mode and self-adaptive adjustment of the monitoring frequency.
(4) The data processing software redefines the light and dark boundaries of the light spots and eliminates the influence of the surrounding environment on the laser ray propagation path, so that the measurement result is more accurate;
(5) a self-balancing system of the laser emitting device is independently developed, and the balancing system can balance the laser emitting device in real time according to the influence (including shaking, deviation and other conditions) of the external environment on the emitting device, so that the laser emitting device can keep the state of an initial position in real time, and the measuring precision is ensured;
(6) the laser emission module and the laser spot receiving and analyzing module of the automatic laser static level monitoring system are integrated in the closed box, the influence of external environment factors is small, and measured data are more accurate and reliable.
Drawings
Fig. 1 is a schematic view schematically showing the structure of a plumb bob controller of a laser transmitter of the present invention;
FIG. 2 is a schematic view illustrating the structure of the leveling plate of the present invention
Fig. 3 schematically shows a signal receiving apparatus of the present invention;
FIG. 4 is a schematic diagram illustrating the data processing apparatus of the present invention acquiring reference data;
fig. 5 schematically shows a schematic view of the data processing apparatus of the present invention acquiring measurement data.
In the figure: 1. the top plate 2, the cross shaft 31, the screw 32, the weight 4, the bearing 5, the rotating shaft 6, the middle shaft 7, the sliding groove 8, the industrial camera 9 and the control circuit board.
Detailed Description
The technical solution adopted by the present invention is further explained below with reference to the accompanying drawings and examples.
Referring to fig. 1, the laser emitting device mainly comprises an independent power supply, a point-shaped laser emitter, a displacement balance adjusting device and the like, wherein the independent power supply is used for supplying power to the point-shaped laser emitter; the balance adjusting device mainly comprises a horizontal adjusting disc, a vertical adjusting screw and a plumb controller, wherein the horizontal adjusting disc controls the horizontal emission angle of the point laser through left-right rotation; controlling the vertical emission angle of the laser emitter by adjusting the vertical displacement difference value of the front position and the rear position formed by the two vertical adjusting screws; in order to reduce the influence of external environment (such as wind, rain and the like), a plumb bob controller of the laser emitting device is also independently developed, and the plumb bob controller can balance the laser emitter according to the influence (shaking, deviation and the like) of the external environment on the emitting device in real time, so that the laser emitter can keep the state of an initial position in real time, and the measuring precision is ensured. So as to prevent shaking, offset and the like during the measurement process.
Wherein the horizontal adjusting disk is provided with a sliding chute, see fig. 2, for rotating the independent laser emitter left and right to adjust the horizontal position, the vertical adjusting screws are respectively connected with the independent laser emitter and the horizontal adjusting disk, the vertical adjusting screws comprise two height adjusting screws, the vertical emitting angle of the independent laser emitter is controlled by adjusting the height difference between the two height-adjusting screws, the displacement balance adjusting device also comprises a base used for installing the horizontal adjusting disc and the vertical adjusting screw, the plumb bob controller is arranged in the base and comprises a top plate, a cross shaft and a plumb bob, the cross shaft is rotationally connected to the side wall of the base through a bearing, the plumb bob comprises a screw rod and a heavy block which are connected with each other, the screw rod is connected to the cross shaft, and the top plate is installed on a bearing seat of the bearing. The top plate is further provided with a rotating shaft, the rotating shaft is connected with the screw rod, the top plate is further provided with a middle shaft, and the rotating shaft is connected with the horizontal adjusting disc through the middle shaft.
Referring to fig. 3, the signal receiving apparatus is mainly composed of a receiving board, an industrial camera, a heat sink, a moving device, and the like. The signal receiving device is internally provided with a control circuit board which integrates the functions of data acquisition, data verification, data storage, data communication and internet surfing and realizes the control of the measuring process by interacting with the platform server.
The data processing device mainly comprises a punctiform facula processing input and output program, the program carries out digital image processing on the shot facula photo, calculates the outline and the mass center of the facula through an algorithm, compares facula information at different measuring moments, and calculates the relative position change of the facula, the last facula and the initial facula, thereby obtaining the relative horizontal and vertical displacement change of the opposite end and the home end; and the user obtains the relative displacement measurement result at the mobile terminal or the computer terminal.
The data processing device, referring to fig. 4 and 5, performs data processing on spot center information by using a spot energy distribution percentage method, redefines the boundary of a spot, defines a bright-dark boundary around the spot, roughly judges the center of the laser spot, expands a certain pixel from the primarily judged laser center to the periphery, attenuates the laser energy when expanding to a certain degree, and defines the laser boundary energy as
By
The boundary formed by the pixel points is a bright and dark boundary of the light spot, after the boundary is determined, the center of the light spot is inverted, the steps are repeated for multiple times, and finally the center of the light spot is determined by calculating and averaging, so that the light spot center information extracted by software is more accurate; in addition, the laser is refracted under the influence of water vapor and other factors in the propagation path, so that the micro change of the laser propagation path is caused, the acquisition frame number of the industrial camera is influenced, the refraction influence of the surrounding environment on the laser is eliminated according to the judgment of the acquisition frame number of the laser, and the measurement precision is improved. When light rays are incident at any angle, the center of the light spot falls on any position on the light screen, so that a certain area is occupied in four digital quadrants, the occupied area is different or the illumination intensity is different, different intensity values can be generated by each quadrant, and the transverse and longitudinal relative positions of the center of the light spot on the CCD photosensitive surface can be obtained by respectively performing difference on the transverse and longitudinal intensity values and dividing the difference by the total illumination intensity of the four digital quadrants. As shown in fig. 4. The spot center coordinates at this time are (x, y), where V (D00), V (D01), V (D10) and V (D11) are the illumination intensities of the four digital quadrants.
The spot center coordinates can be obtained. The displacement of the object to be measured between two measurements can be easily obtained through the coordinate displacement of the center of the light spot in the two measurements. Meanwhile, displacement information can be obtained at any time according to requirements only by simply adjusting the time interval between two times of measurement, so that the monitoring efficiency is greatly improved.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be within the technical scope of the present invention, and the technical solutions and novel concepts according to the present invention should be covered by the scope of the present invention.
Claims (10)
1. An automatic laser static leveling monitoring system comprises a laser emitting device, a signal receiving device and a data processing device, and is characterized in that the laser emitting device comprises an independent laser emitter and a displacement balance adjuster, the independent laser emitter is mounted on the displacement balance adjuster, the displacement balance adjuster comprises a horizontal adjusting disc, a vertical adjusting screw and a plumb bob controller, a chute is arranged on the horizontal adjusting disc and used for enabling the independent laser emitter to rotate left and right to adjust the horizontal position, the vertical adjusting screw is respectively connected with the independent laser emitter and the horizontal adjusting disc and comprises two height adjusting screws, the vertical emitting angle of the independent laser emitter is controlled by adjusting the height difference between the two height adjusting screws, the plumb bob controller is mounted on the horizontal adjusting disc, the laser emitter is used for automatically balancing the independent laser emitter according to the influence of the external environment on the laser emitter.
2. The automatic laser static leveling monitoring system of claim 1, wherein the laser emitting device further comprises a base, the plumb bob controller is mounted in the base, the plumb bob controller comprises a top plate, a cross-shaft and a plumb bob, the cross-shaft is rotatably connected to the side wall of the base through a bearing, the plumb bob comprises a screw and a weight which are connected with each other, the screw is connected to the cross-shaft, and the top plate is mounted on a bearing seat of the bearing.
3. The automatic laser static leveling monitoring system according to claim 2, wherein a rotating shaft is further arranged on the top plate, the rotating shaft is connected with the screw, a middle shaft is further arranged on the top plate, and the rotating shaft is connected with the horizontal adjusting plate through the middle shaft.
4. The laser automated laser hydrostatic level monitoring system of claim 3, wherein the laser emitting device further comprises a power supply for supplying power to the independent laser emitter.
5. The automatic monitoring system of laser static level according to claim 1, characterized in that a control circuit board is installed in the signal receiving device, the control circuit board is used for data acquisition, data verification, data storage, data communication and internet connection, and the control of the measuring process is realized by the interaction of the control circuit board and the data processing device.
6. The automatic monitoring system for laser hydrostatic level as claimed in claim 5, wherein the signal receiving device further comprises an industrial camera, the industrial camera is connected to the control circuit board, and is configured to convert the laser signal emitted by the independent laser emitter into an image signal, and transmit the image signal to the data processing device through the control circuit board.
7. The automated monitoring system according to claim 1, wherein the data processing device is configured to process the data collected by the signal receiving device and calculate the relative displacement.
8. A method for automated monitoring of laser hydrostatic leveling, the method comprising the steps of:
s1, the laser emitting device emits laser to the signal receiving device, and the data processing device is used for calibration to obtain reference data;
s2, after the calibration is completed, the laser emitting device is automatically leveled, the balance state of the laser emitting device is ensured, the measurement is carried out, and the signal receiving device receives the measurement image;
and S3, the signal receiving device sends the measurement image to a data processing device, and the measurement image is compared with the reference data after being processed by the data processing device to obtain a relative displacement measurement result.
9. The method of claim 8, wherein the step of calibrating the data processing device comprises:
and S11, acquiring the laser reference spot center through the boundary of the laser spot.
10. A method according to claim 9, wherein the step of processing the measurement data by the data processing device comprises:
and S31, the data processing device performs digital image processing on the measurement image acquired by the signal receiving device, calculates the outline and the center of the light spot through an algorithm, compares the information of the center of the light spot at different measurement moments, and calculates the relative position change of the center of the light spot at this time with the center of the light spot at the last time and the center of the reference light spot, thereby obtaining the relative horizontal and vertical displacement change of the opposite end and the home end.
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| CN202011291189.6A CN112240761A (en) | 2020-11-18 | 2020-11-18 | Laser hydrostatic level automatic monitoring system and monitoring method |
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| CN202011291189.6A CN112240761A (en) | 2020-11-18 | 2020-11-18 | Laser hydrostatic level automatic monitoring system and monitoring method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112781549A (en) * | 2021-02-22 | 2021-05-11 | 河海大学 | Static force level gauge based on machine vision and having inclination measuring function and measuring method thereof |
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2020
- 2020-11-18 CN CN202011291189.6A patent/CN112240761A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112781549A (en) * | 2021-02-22 | 2021-05-11 | 河海大学 | Static force level gauge based on machine vision and having inclination measuring function and measuring method thereof |
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