CN111141365A - Non-contact all-dimensional hydrological water level monitoring method - Google Patents
Non-contact all-dimensional hydrological water level monitoring method Download PDFInfo
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- CN111141365A CN111141365A CN202010034632.5A CN202010034632A CN111141365A CN 111141365 A CN111141365 A CN 111141365A CN 202010034632 A CN202010034632 A CN 202010034632A CN 111141365 A CN111141365 A CN 111141365A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 239000007787 solid Substances 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims abstract description 8
- 238000012806 monitoring device Methods 0.000 claims description 20
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 claims description 4
- 229910019901 yttrium aluminum garnet Inorganic materials 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000012795 verification Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
- G01F23/292—Light, e.g. infrared or ultraviolet
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The invention provides a non-contact omnibearing hydrological water level monitoring method which comprises the following steps: A. laser radar initialization: firstly, a monitoring person installs monitoring equipment on the surface of a high platform, the monitoring direction of the monitoring equipment is opposite to the river surface of a monitored water level, then the monitoring equipment starts a working condition initialization and self-checking program, and then after the initialization of the monitoring equipment is completed, a controller controls a laser radar transmitter to rotate; B. solid medium identification: after the angle adjustment of the laser radar transmitter is completed, the laser radar transmitter scans an external medium, and the solid medium is firstly contacted during scanning. According to the invention, through the matching of the laser radar initialization, the solid medium identification, the liquid medium identification, the working condition and data modeling processing and the data output process, a non-contact monitoring mode can be adopted for the water level monitoring water surface, and the object distance obtained by monitoring is circularly and accurately calculated, so that the accuracy numerical value of the water level is obtained.
Description
Technical Field
The invention relates to the field of hydrological monitoring, in particular to a non-contact all-dimensional hydrological water level monitoring method.
Background
At present, a plurality of national hydrological monitoring sites are provided, water level data in hydrological parameters are of great importance, the data acquisition generally comes from reservoirs, riverways, tide levels and the like, the conventional water level monitoring method mainly adopts a float type water level meter, a radar type water level meter, a pressure type water level meter, a bubble water level meter and the like, and according to different scenes, the water level acquisition modes have some problems, for example, the float type water level meter needs vertical well measurement, the engineering cost is higher, the construction difficulty of a common small-sized reservoir or a pond reservoir is high, the radar type water level meter needs to be vertical to the water surface, the difficulty of finding a vertical plane in the reservoir is very high, the pressure type and bubble water level meter are related to the environment, and the accuracy cannot meet the hydrological monitoring requirement, so that the existing hydrological detection method has lower water level monitoring accuracy in the implementation process.
Therefore, it is necessary to provide a non-contact omnibearing hydrological water level monitoring method to solve the above technical problems.
Disclosure of Invention
The invention provides a non-contact all-dimensional hydrological water level monitoring method, which solves the problem of low accuracy of water level monitoring in the implementation process of the existing hydrological water level detection method.
In order to solve the technical problem, the invention provides a non-contact omnibearing hydrological water level monitoring method which comprises the following steps:
A. laser radar initialization: firstly, a monitoring person installs monitoring equipment on the surface of a high platform, the monitoring direction of the monitoring equipment is opposite to the river surface of a monitored water level, then the monitoring equipment starts a working condition initialization and self-checking program, and then after the initialization of the monitoring equipment is completed, a controller controls a laser radar transmitter to rotate;
B. solid medium identification: after the angle of the laser radar transmitter is adjusted, the laser radar transmitter scans an external medium, the solid medium is firstly contacted by the scanning, and then the controller accurately identifies the solid medium data through a data algorithm;
C. liquid medium identification: then when the laser radar transmitter is in scanning contact with the liquid medium, the controller performs data modeling analysis processing on the liquid medium data through a data algorithm;
D. and (3) modeling treatment of working conditions and data: after the data are analyzed and processed to obtain a solid-liquid boundary point, accurate critical point information can be obtained, and the distance between the critical point information and equipment can be calculated through the point information, so that the vertical object distance can be calculated;
E. and (3) data output: after a group of object distances are obtained through multiple cycles, data rationalization algorithm verification is carried out, vertical object distance data can be output, and the water level can be calculated through the object distances.
Preferably, in step a, the laser radar transmitter rotates within an angle range of 0 ° to 180 °.
Preferably, in the step a, an access door is bolted to the right side of the monitoring device, an observation window is vertically arranged on the front side of the right side of the access door, and the observation window is positioned on the right side of the laser radar transmitter and the controller.
Preferably, in the step a, a top cover is laterally bolted on the top of the monitoring device, and the height of the top cover decreases from the center to two sides.
Preferably, the laser radar transmitter adopts a neodymium-doped yttrium aluminum garnet laser, and the working mode adopted by the laser radar transmitter is pulse transmission.
Preferably, in step E, the number of times of the object distance cycle processing is 30.
Preferably, the top at the back of the right side of the monitoring device is bolted with an electric shock warning board, and the bottom at the back of the right side of the monitoring device is rotatably connected with a manual adjusting knob.
Compared with the related art, the non-contact omnibearing hydrological water level monitoring method provided by the invention has the following beneficial effects:
the invention provides a non-contact omnibearing hydrological water level monitoring method,
1. according to the invention, through the matching of the laser radar initialization, the solid medium identification, the liquid medium identification, the working condition and data modeling processing and the data output process, a non-contact monitoring mode can be adopted for the water level monitoring water surface, and the object distance obtained by monitoring is circularly and accurately calculated, so that the accuracy value of the water level is obtained, the hydrologic monitoring requirement is met, and the requirements of various hydrologic water level monitoring scenes are met;
2. the invention increases the scanning angle of the laser radar transmitter to the monitoring water surface through the autorotation angle range of the laser radar transmitter between 0 to 180 degrees, further enlarges the scanning area of the water surface, ensures the accuracy of the obtained data, is convenient for maintenance personnel to disassemble, maintain and maintain the monitoring equipment through the access door, avoids the access door from obstructing the scanning sight of the laser radar transmitter through the observation window, can carry out wind-proof and rain-proof treatment on the monitoring equipment through the top cover, further enhances the scanning effect of the laser radar transmitter by adopting a neodymium-doped yttrium aluminum garnet laser and adopting a working mode of pulse emission through the laser radar transmitter, improves the accuracy of the water level monitoring numerical value, improves the accuracy of object distance calculation through 30 times of object distance cyclic treatment, prevents the object distance from generating larger errors, and passes through an electric shock warning board, can electrocute the warning to peripheral personnel, prevent that peripheral personnel from taking place to electrocute with monitoring facilities, through manual adjust knob, when laser radar transmitter rotation damaged, monitoring personnel can carry out manual regulation to laser radar transmitter's rotation angle.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of a non-contact omnibearing hydrological water level monitoring method according to the present invention;
FIG. 2 is a right side view of the monitoring device of FIG. 1;
fig. 3 is a flowchart of the operation shown in fig. 1.
Reference numbers in the figures: 1. a high platform; 2. river surface; 3. monitoring equipment; 4. a laser radar transmitter; 5. a controller; 6. an access door; 7. an observation window; 8. a top cover; 9. an electric shock warning board; 10. and a manual adjusting knob.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1, fig. 2 and fig. 3 in combination, in which fig. 1 is a schematic structural diagram of a preferred embodiment of a non-contact omnibearing hydrological water level monitoring method provided by the present invention, fig. 2 is a right structural view of the monitoring device shown in fig. 1, and fig. 3 is an operation flowchart shown in fig. 1. A non-contact omnibearing hydrological water level monitoring method comprises the following steps:
A. laser radar initialization: firstly, a monitoring person installs a monitoring device 3 on the surface of a high platform 1, the monitoring direction of the monitoring device 3 is opposite to the river surface 2 of a monitored water level, then the monitoring device 3 starts a working condition initialization and self-checking program, and then after the initialization of the monitoring device 3 is completed, a controller 5 controls a laser radar transmitter 4 to rotate;
B. solid medium identification: after the angle of the laser radar transmitter 4 is adjusted, the laser radar transmitter 4 scans an external medium, the solid medium is firstly contacted by the scanning, and then the controller 5 accurately identifies the solid medium data through a data algorithm;
C. liquid medium identification: then when the laser radar transmitter 4 is in scanning contact with the liquid medium, the controller 5 performs data modeling analysis processing on the liquid medium data through a data algorithm;
D. and (3) modeling treatment of working conditions and data: after the data are analyzed and processed to obtain a solid-liquid boundary point, accurate critical point information can be obtained, and the distance between the critical point information and equipment can be calculated through the point information, so that the vertical object distance can be calculated;
E. and (3) data output: after a group of object distances are obtained through multiple cycles, data rationalization algorithm verification is carried out, vertical object distance data can be output, and the water level can be calculated through the object distances.
In the step A, the autorotation angle range of the laser radar transmitter 4 is between 0 and 180 degrees, the scanning angle of the laser radar transmitter 4 on the monitored water surface is increased, the scanning area of the water surface is further enlarged, and the accuracy of the obtained data is ensured.
In step A, access door 6 has been bolted on monitoring facilities 3's right side, and the maintenance of being convenient for maintenance personal to monitoring facilities 3 dismantles maintenance and maintenance, observation window 7 has been seted up to the front vertical on access door 6 right side, observation window 7 is located the right side of laser radar transmitter 4 and controller 5, avoids access door 6 to cause the hindrance to laser radar transmitter 4's scanning sight.
In the step A, the top of the monitoring device 3 is transversely bolted with a top cover 8, the height of the top cover 8 is gradually reduced from the center to two sides, and the monitoring device 3 can be subjected to wind-proof and rain-proof treatment.
The laser radar transmitter 4 adopts a neodymium-doped yttrium aluminum garnet laser, the working mode adopted by the laser radar transmitter 4 is pulse transmission, the scanning effect of the laser radar transmitter 4 is further enhanced, and the accuracy of a water level monitoring numerical value is improved.
In the step E, the number of times of the object distance cyclic processing is 30, so that the accuracy of object distance calculation is improved, and the object distance is prevented from generating large errors.
The top bolt at the back of 3 right sides of monitoring facilities has electrocuted warning sign 9, can electrocute the warning to peripheral personnel, prevents that peripheral personnel from taking place to electrocute with monitoring facilities 3, the bottom at the back of 3 right sides of monitoring facilities rotates and is connected with manual adjust knob 10, and when 4 rotations of laser radar transmitter damage, monitoring personnel can carry out manual regulation to laser radar transmitter 4's rotation angle.
Compared with the related art, the non-contact omnibearing hydrological water level monitoring method provided by the invention has the following beneficial effects:
according to the invention, through the matching of the laser radar initialization, the solid medium identification, the liquid medium identification, the working condition and data modeling processing and the data output process, a non-contact monitoring mode can be adopted for the water level monitoring water surface, and the object distance obtained by monitoring is circularly and accurately calculated, so that the accuracy value of the water level is obtained, the hydrologic monitoring requirement is met, and the requirements of various hydrologic water level monitoring scenes are met.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. A non-contact omnibearing hydrological water level monitoring method is characterized by comprising the following steps:
A. laser radar initialization: firstly, a monitoring person installs a monitoring device (3) on the surface of a high platform (1), the monitoring direction of the monitoring device (3) is opposite to a river surface (2) of a monitored water level, then the monitoring device (3) starts a working condition initialization and self-checking program, and then after the initialization of the monitoring device (3) is completed, a controller (5) controls a laser radar transmitter (4) to rotate;
B. solid medium identification: after the angle of the laser radar transmitter (4) is adjusted, the laser radar transmitter (4) scans an external medium, the solid medium is firstly contacted by the scanning, and then the controller (5) accurately identifies the solid medium data through a data algorithm;
C. liquid medium identification: then when the laser radar transmitter (4) is in scanning contact with the liquid medium, the controller (5) performs data modeling analysis processing on the liquid medium data through a data algorithm;
D. and (3) modeling treatment of working conditions and data: after the data are analyzed and processed to obtain a solid-liquid boundary point, accurate critical point information can be obtained, and the distance between the critical point information and equipment can be calculated through the point information, so that the vertical object distance can be calculated;
E. and (3) data output: after a group of object distances are obtained through multiple cycles, data rationalization algorithm verification is carried out, vertical object distance data can be output, and the water level can be calculated through the object distances.
2. The non-contact omnibearing hydrological water level monitoring method according to claim 1, wherein in step A, the autorotation angle of the laser radar transmitter (4) ranges from 0 to 180 degrees.
3. The non-contact omnibearing hydrological water level monitoring method according to claim 1, wherein in the step A, an access door (6) is bolted to the right side of the monitoring device (3), an observation window (7) is vertically arranged on the right side of the access door (6), and the observation window (7) is positioned on the right side of the laser radar transmitter (4) and the controller (5).
4. The non-contact omnibearing hydrological water level monitoring method according to claim 1, wherein in step A, a top cover (8) is laterally bolted to the top of the monitoring device (3), and the height of the top cover (8) is gradually reduced from the center to two sides.
5. The non-contact omnibearing hydrological water level monitoring method according to claim 1, wherein the laser radar transmitter (4) adopts a neodymium-doped yttrium aluminum garnet laser, and the laser radar transmitter (4) adopts a pulse transmission mode.
6. The method according to claim 1, wherein the number of cycles of the object distance in step E is 30.
7. The non-contact omnibearing hydrological water level monitoring method according to claim 1, wherein an electric shock warning board (9) is bolted to the top of the right back side of the monitoring device (3), and a manual adjusting knob (10) is rotatably connected to the bottom of the right back side of the monitoring device (3).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812617A (en) * | 2020-07-28 | 2020-10-23 | 广东博智林机器人有限公司 | Laser radar assembly |
| CN113124959A (en) * | 2021-04-14 | 2021-07-16 | 武汉新烽光电股份有限公司 | Method for measuring water level based on laser scanning embankment |
| CN113503940A (en) * | 2021-07-09 | 2021-10-15 | 武汉新烽光电股份有限公司 | Method and device for improving precision of three-dimensional laser radar water level gauge |
| CN113916324A (en) * | 2021-08-24 | 2022-01-11 | 山东省水文中心 | A non-contact water level verification control system |
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