On-site comparison device for laser distance measurement of float-type tide gauge

Abstract

The invention relates to a float type tide gauge laser distance measurement field comparison device, comprising a transparent plate, a long strip through slot is provided on the transparent plate; a plurality of mounting holes for mounting a laser bracket are arranged along the long strip through slot; the laser bracket is L-shaped, one end of which is fixed on the transparent plate, and the other end is used to abut against the laser; the emission direction of the laser is vertically downward and passes through the long strip through slot; one side of the transparent plate is rotatably connected with a pair of support rods, the support rods are provided with a plurality of column mounting holes, the column mounting holes are used to be fixedly connected with a column, and another group of column mounting holes is provided on the other side of the transparent plate, the group of column mounting holes is also used to be fixedly connected with a column; the column is erected at the edge of the wellhead of the tide gauge well, and is supported at three points; a laser reflection float is arranged to float in the tide gauge well, the laser reflection float corresponds to the laser longitudinally, and the data read by the laser distance measurement and the data read by the tide gauge are verified on site.

Description

Technical Field

[0001] The invention relates to a device for calibrating the accuracy of a tide gauge, in particular to a float-type tide gauge laser ranging field comparison device. Background Art

[0002] Tidal observation is one of the most important projects in marine hydrological observation. Tidal changes are directly related to the entry and exit of ships in ports, marine and coastal engineering design, the depth of naval mine defense, storm surge forecast, sea reclamation, tidal power generation, etc. Tidal data are needed to determine the average sea level and depth datum, make tide tables, forecast storm surges, command maritime operations, lay submarine cables, and predict earthquakes. Therefore, obtaining accurate tidal data is of great significance to understanding the local tidal types, changing patterns, disaster prevention and mitigation, marine engineering construction, and military affairs.

[0003] Tide gauges, instruments for observing the height of tidal rise and fall, also known as water level gauges, are important instruments for observing tidal levels. According to their working principles, they can be divided into float, pressure, acoustic and other types. At present, the tide gauges used in my country are still mainly float tide gauges and pressure tide gauges. The float tide gauge is widely used in long-term fixed tide stations along the coastline of my country because of its simple method and labor-saving operation. Most ocean stations have special tide wells to ensure long-term, continuous and accurate tide observation data.

[0004] At present, the calibration standard methods of tide gauges in my country mainly include "Verification Regulations for Float Tide Gauges" (JJF587-1997), "Verification Regulations for Acoustic Tide Gauges" (JJG 947-1999) and "Verification Regulations for Pressure Tide Gauges" (JJG 946-1999). According to the existing standards, tide gauges need to be disassembled and inspected regularly. However, due to the inconvenience of disassembly, installation and transportation of float tide gauges, easy damage during transportation, and long verification and transportation time, they are often sent to statutory metrology and verification institutions for verification before installation, and no longer sent for inspection after installation and use. The tide data are traced by regular comparison during use. However, the content, steps and methods of tide gauge comparison at various marine stations are not the same, the specific indicators are not clear, and the influence of human factors is relatively large, resulting in errors in tide gauge observation data. Summary of the invention

[0005] The purpose of the present invention is to provide a simple and easy on-site comparison device for a float type tide gauge, so as to solve the value tracing problem of the float type tide gauge which is difficult to disassemble after installation.

[0006] The present invention adopts the following technical solutions:

[0007] A float type tide gauge laser ranging field comparison device comprises a transparent plate 3, on which a long strip through slot 301 is provided; a plurality of mounting holes for mounting a laser bracket 5 are arranged along the long strip through slot; the laser bracket 5 is L-shaped, one end of which is fixed on the transparent plate 3, and the other end is used to abut against the laser 4; the emission direction of the laser 4 is vertically downward and passes through the long strip through slot 301; one side of the transparent plate 3 is rotatably connected to a pair of support rods 12, on which a plurality of column mounting holes are provided, the column mounting holes are used to be fixedly connected to a column 13, and another group of column mounting holes are provided on the other side of the transparent plate 3, the group of column mounting holes are also used to be fixedly connected to a column 13; the column 13 is used to stand at the wellhead of the tide gauge well, and is supported at three points; a laser reflecting float 9 is arranged floating in the tide gauge well, the laser reflecting float 9 corresponds to the laser 4 in the longitudinal direction, and the data read by the laser ranging of the laser 4 is verified on the spot with the data read by the tide gauge.

[0008] Preferably, a height coarse adjustment screw is provided on the column 13, and a height and level fine adjustment foot is provided at the bottom of the column 13.

[0009] Preferably, the transparent plate 3 is rectangular, and a pair of support rods 12 are rotatably arranged on a small end side of the transparent plate. When stored, the support rods 12 are rotated to the other small end side, and the length is flush with the long side of the transparent plate.

[0010] Preferably, the tide gauge is arranged at the center of the tide gauge well, and the float-type tide gauge laser ranging field comparison device is located at the side of the tide gauge well and does not interfere with the tide gauge.

[0011] A working method of the above-mentioned float-type tide gauge laser ranging field comparison device, comprising: selecting a mounting hole at a suitable position on a laser bracket 5 to install the laser bracket 5 according to a laser reflection float 9; selecting different column mounting holes on a support rod 12 and a transparent plate 3 to install the column 13 according to the size of the tide well and the position of the tide gauge; and adjusting the height coarse adjustment screw and the height and level fine adjustment foot according to the longitudinal distance setting required by the laser 4.

[0012] Preferably, the top surface of the laser reflective float 9 has a set height above the water surface, and the control system automatically adds the set height to the distance measured by the laser 4 to obtain tide gauge and distance measurement data.

[0013] The social and economic benefits of the present invention are:

[0014] 1) Ensure the reliability and comparability of tide data, realize the on-site calibration of tide gauges, and have strong operability, high efficiency and speed.

[0015] 2) A simple and easy device for on-site comparison of float-type tide gauges is provided to solve the problem of value traceability of float-type tide gauges that are difficult to disassemble after installation; and to solve the technical difficulties of on-site comparison of float-type tide gauges.

[0016] 3) The structure and conditions of the tide gauge well port are fully studied, and a three-point support installation method is adopted, which is easy to install, does not interfere with the tide gauge, and is easy to disassemble and carry.

[0017] 4) The design is ingenious, the position adjustment is convenient, and the height and level can be roughly and finely adjusted. It is well considered and is very conducive to the promotion and application in the field of tide gauge field calibration, and can unify the field comparison method of float-type tide gauges.

[0018] 5) Provide technical support for marine engineering and marine disaster prevention and mitigation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a schematic diagram of installing a float type tide gauge laser ranging field comparison device on a tide gauge well.

[0020] Figure 2 yes Figure 1 Zoomed in view from top.

[0021] Figure 3 yes Figure 2 Schematic diagram of the field comparison device for laser ranging of float-type tide gauges.

[0022] Figure 4 The present invention is a top view of a float-type tide gauge laser ranging field comparison device installed on the top of a tide gauge well.

[0023] Figure 5 It is a schematic diagram of the rotational connection between a transparent plate and a pair of support rods.

[0024] Figure 6 This is a schematic diagram of the support rod after rotating around the axis when stored.

[0025] Figure 7 This is the three-view drawing of the laser bracket.

[0026] Figure 8 It is the front view of the laser reflective float.

[0027] Fig. 9 is a top view of the laser reflective float.

[0028] Fig.10 This is a front view of the float type tide gauge laser ranging field comparison device of the present invention when it is installed.

[0029] Fig.11 yes Fig.10 Left view

[0030] Fig.12 yes Fig.10 Top view of the .

[0031] In the figure, 1. tape measure disk, 2. electronic tide gauge and code disk, 3. transparent plate, 4. laser, 5. laser bracket, 6. level ruler, 7. laser emission line, 8. laser reflection float, 9. tide gauge float, 10. water permeable hole on the well wall, 11. tide gauge installation base plate, 12. support rod, 13. column. 301. long strip through slot. DETAILED DESCRIPTION

[0032] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0033] A tide gauge is generally installed in a tide well to monitor the tide level in real time online. It is generally required to work 24 hours a day without interruption. How to provide a method and device for online calibration of a tide gauge on site is the content that needs to be described in detail in this embodiment.

[0034] See also Figure 1-Figure 12 A float type tide gauge laser ranging field comparison device comprises a transparent plate 3, on which a long strip through groove 301 is provided; a plurality of mounting holes for mounting a laser bracket 5 are arranged along the long strip through groove; the laser bracket 5 is L-shaped, one end of which is fixed on the transparent plate 3, and the other end is used to abut against the laser 4; the emission direction of the laser 4 is downward and passes through the long strip through groove 301; one side of the transparent plate 3 is rotatably connected with a pair of support rods 12, and the support rods 12 are provided with a plurality of column mounting holes, the column mounting holes are used to be fixedly connected with a column 13, and another group of column mounting holes are provided on the other side of the transparent plate 3, and the group of column mounting holes are also used to be fixedly connected with a column 13; the column 13 is used to stand at the wellhead of the tide gauge well, and is supported at three points; a laser reflecting float 9 is arranged floating in the tide gauge well, and the laser reflecting float 9 corresponds to the laser 4 in the longitudinal direction, and the data read by the laser ranging of the laser 4 is verified on the spot with the data of the tide gauge.

[0035] In this embodiment, see Fig.10 and Figure 3 The column 13 is provided with a height coarse adjustment screw, and the bottom of the column 13 is provided with a height and level fine adjustment foot.

[0036] In this embodiment, see Figure 3-6 The transparent plate 3 is rectangular, and a pair of support rods 12 are rotatably arranged on a small end side of the transparent plate. When stored, the support rods 12 are rotated to the other small end side, and the length is flush with the long side of the transparent plate.

[0037] In this embodiment, see Figure 4The tide gauge is arranged at the center of the tide gauge well, and the float-type tide gauge laser ranging field comparison device is arranged at the side of the tide gauge well and does not interfere with the tide gauge.

[0038] When the above-mentioned float-type tide gauge laser ranging field comparison device is working, the laser bracket 5 is installed by selecting the installation hole at the appropriate position on the laser bracket 5 according to the laser reflection float 9; according to the size of the tide well and the position of the tide gauge, the support rod 12 and the different column mounting holes on the transparent plate 3 are selected to install the column 13; according to the longitudinal distance setting required by the laser 4, the height coarse adjustment screw and the height and level fine adjustment foot are adjusted.

[0039] See also Figure 1 The top surface of the laser reflecting float 9 has a set height above the water surface, and the control system automatically adds the set height to the distance measured by the laser 4 to obtain the tide gauge distance measurement data.

[0040] The laser measuring bracket can be adjusted according to the size of the tide well to accommodate tide wells of different sizes. The bracket height can be adjusted to ensure the level of the transparent measuring base plate and to align the height of the measuring base plate with the tide gauge reference scale (or the difference can be read).

[0041] The present invention ensures the reliability and comparability of tide level data, realizes the on-site calibration of tide gauges, and effectively simplifies the calibration of tide gauges; it provides a simple and easy device for on-site comparison of float-type tide gauges, which solves the problem of value traceability of float-type tide gauges that are difficult to disassemble after installation; it solves the technical difficulties of on-site comparison of float-type tide gauges. The structure and conditions of the tide well port are fully studied, and a three-point support installation form is adopted. The installation is easy, there is no interference with the tide gauge, and it is easy to disassemble and carry. The design is ingenious, the position adjustment is convenient, and the height can be roughly and finely adjusted. It is well considered and is very conducive to promotion and application in the field of tide gauge calibration, and can unify the method of on-site comparison of float-type tide gauges. It provides technical support for marine engineering and marine disaster prevention and mitigation.

[0042] The above are preferred embodiments of the present invention. A person skilled in the art may make various changes or improvements thereon. Without departing from the general concept of the present invention, these changes or improvements shall fall within the scope of protection claimed by the present invention.

Claims

1. A float-type tide gauge laser ranging field comparison device, characterized in that: The invention comprises a transparent plate (3), wherein a long strip through slot (301) is provided on the transparent plate (3); a plurality of mounting holes for mounting a laser bracket (5) are arranged along the long strip through slot; the laser bracket (5) is L-shaped, one end of which is fixed on the transparent plate (3), and the other end of which is used to abut against a laser (4); the emission direction of the laser (4) is downward and passes through the long strip through slot (301); One side of the transparent plate (3) is rotatably connected to a pair of support rods (12), and the support rods (12) are provided with a plurality of column mounting holes, and the column mounting holes are used to be fixedly connected to a column (13); the other side of the transparent plate (3) is provided with another group of column mounting holes, and the group of column mounting holes is also used to be fixedly connected to a column (13); the column (13) is used to stand at the wellhead of the tide well, and is supported at three points; A laser reflection float (9) is arranged to float in the tide gauge well, and the laser reflection float (9) corresponds to the laser (4) in the longitudinal direction, and the data read by the laser distance measurement of the laser (4) is verified on site with the data read by the tide gauge; The column (13) is provided with a height coarse adjustment screw, and the bottom of the column (13) is provided with a height and level fine adjustment foot; The transparent plate (3) is rectangular, and a pair of support rods (12) are rotatably arranged on a small end side of the transparent plate. When stored, the support rods (12) are rotated to the other small end side, and the length is flush with the long side of the transparent plate; The tide gauge is arranged at the center of the tide well, and the float-type tide gauge laser ranging field comparison device is located at the side of the tide well and does not interfere with the tide gauge; According to the laser reflective float (9), the laser bracket (5) is installed by selecting a mounting hole at a suitable position on the laser bracket (5); according to the size of the tide well and the position of the tide gauge, different column mounting holes on the support rod (12) and the transparent plate (3) are selected to install the column (13); according to the longitudinal distance setting required by the laser (4), the height coarse adjustment screw and the height and level fine adjustment foot are adjusted; The top surface of the laser reflective float (9) has a set height above the water surface, and the control system automatically adds the set height to the distance measured by the laser (4) to obtain tide gauge distance measurement data.

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