Stable wind-resistant GNSS (Global Navigation Satellite System) tide level observation instrument capable of being portable and migrated

Abstract

The utility model discloses a GNSS (Global Navigation Satellite System) tide level observation instrument capable of being portable, migrated, stable and wind-resistant. The GNSS tide level observation instrument comprises a base, an X-direction fixing part, a Y-direction fixing part, a supporting rod and an integrated GNSS receiver, the X-direction fixing part comprises an X-direction fixing seat and a fixing circular shaft; the X-direction fixing seat is composed of a left side seat and a right side seat which are connected into a whole through a fixing circular shaft. The supporting rod comprises a vertical main rod 12, and the tail end of the main rod is nested with a fixed circular shaft 7 to realize fixation in the X direction; the Y-direction fixing part comprises a Y-direction fixing seat and bolts, the Y-direction fixing seat is composed of an upper side seat and a lower side seat, screw holes matched with threads on the bolts are formed in the Y-direction fixing seat, the bolts penetrate through the screw holes to oppositely screw in the Y direction, and position fixing and displacement limiting are conducted on the main rod in the Y direction. The device is portable, can realize horizontal centering under various terrains, can freely adjust the inclination and rotation angle of the receiver, and is strong in wind resistance.

Description

Technical Field

[0001] The utility model belongs to the field of tide observation technology and GNSS application, and specifically relates to a GNSS tide observation instrument which is portable, portable, stable and wind-resistant. Background Art

[0002] Against the backdrop of global warming, rising sea levels, and frequent extreme weather, marine disaster prevention and mitigation has placed higher demands on data observation. Traditional water level observation equipment (radar, pressure type, etc.) often needs to be deployed near the water, which is easily damaged by bad weather and often requires protection from structures such as concrete buildings. Nearshore tide stations are expensive, require large measurement space, and are easily damaged. In addition, they are prone to power outages and cannot work effectively in extreme weather conditions such as typhoons.

[0003] With the development and improvement of the global satellite navigation system, a technology that uses navigation satellite signal interference reflection signal (GNSS-IR) to observe tide level has developed rapidly. GNSS-IR tide level observation technology uses GNSS receivers installed on the shore to capture satellite direct and reflected signals, and obtain water level values ​​based on the interference characteristics in data such as signal-to-noise ratio; GNSS receivers can be installed at high places, far away from the water surface, are not easy to damage, and can achieve long-term water level observation. Commonly used GNSS receivers are permanent fixed and portable. Permanent fixed receivers usually undertake terrain settlement monitoring at the same time, have fixed layout points and are relatively expensive. Portable receivers are temporarily installed using tripods, have flexible layout and are inexpensive. However, portable receivers have poor stability and weak wind resistance in extreme weather such as typhoons, making them difficult to apply to actual observations such as storm surges and typhoon waves.

[0004] With the rapid economic and social development of coastal areas, the requirements for the construction of offshore observation capabilities for marine disaster prevention and mitigation are constantly increasing and the demand is growing. The development of a high-precision, widely and flexibly deployed, low-cost, damage-resistant, and stable tide observation equipment that can work in extreme weather conditions will be of great help to marine disaster prevention and mitigation and scientific research. Utility Model Content

[0005] The purpose of the utility model is to provide a portable, portable, stable and wind-resistant GNSS tide observation instrument to address the deficiencies of the prior art, so as to obtain a tide observation device with high precision, wide and flexible deployment, low cost, strong damage resistance and stable operation in extreme weather conditions.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions.

[0007] In the present specification, the “X direction” refers to a horizontal direction, and the “Y direction” refers to a direction perpendicular to the X direction on a plane where the “substrate of a base” described below is located.

[0008] A portable, portable, stable and wind-resistant GNSS tide level observation instrument, the structure of which includes a base, an X-direction fixing part, a Y-direction fixing part, a support rod and an integrated GNSS receiver;

[0009] The base is composed of a square base plate and four connecting plates respectively hinged to the four edges of the square base plate. The connecting plates are hinged to the base plate to form a circular base with the center point of the square base plate as the center. The connecting plates are connected to the ground by screws to realize the installation and fixation of the entire observation instrument. The hinged connection between the connecting plates and the base plate is conducive to stable installation on uneven ground.

[0010] The X-direction fixing part includes an X-direction fixing seat and a fixing circular shaft 7; the X-direction fixing seat is composed of a left seat and a right seat, which are fixed vertically on the base plate along the X direction and are symmetrical about the diameter of the base circle, and are both composed of an arc-shaped side plate with an arc larger than a semicircle (a part with a larger area left after a circle is cut by a diameter smaller than the diameter) and a concentric arc-shaped outer rail, and a gap is reserved between the side plate and the outer rail as a slide rail; the left seat and the right seat are connected as a whole by a fixing circular shaft;

[0011] The support rod comprises a vertical main rod and a fixed cross rod located at the lower end of the main rod and integrally formed with the main rod (not movable or rotatable relative to each other); threads and matching nuts are provided at both ends of the fixed cross rod, and both ends of the fixed cross rod respectively pass through the slide rails of the left seat and the right seat and maintain sliding connection, the threads are located at both ends of the fixed cross rod after passing through the slide rail, and a limiting plate is provided on the fixed cross rod on the other side of the slide rail opposite to the nut, which is used to work together with the nut to fix and limit the displacement (anti-lateral displacement) of the support rod in the X direction, the end of the main rod is nested with the fixed circular shaft, and the fixed circular shaft is fixedly connected to the left seat and the right seat to realize the fixation of the support rod on the fixed part in the X direction; the connection between the fixed circular shaft and the main rod maintains relative rotation, cooperates with the sliding of the fixed cross rod in the slide rail, and facilitates the adjustment of the vertical main rod of the support rod to keep it vertical during installation.

[0012] The Y-direction fixing part includes a Y-direction fixing seat and a bolt. The Y-direction fixing seat consists of an upper side seat and a lower side seat. The upper side seat and the lower side seat are vertically fixed on the base plate along the Y direction and are symmetrical about the diameter of the base circle. The upper side seat and the lower side seat are provided with screw holes matching the threads on the bolts. The bolts pass through the screw holes on the upper side seat and the lower side seat respectively to realize opposite screwing in the Y direction. The screwing screw is connected with the lower part of the main rod of the support rod to fix the position of the main rod and limit the displacement in the Y direction.

[0013] The integrated GNSS receiver 14 is composed of a GNSS portable receiver with a built-in GNSS-IR algorithm chip, and the integrated GNSS receiver is fixed on the top of the main pole.

[0014] Furthermore, the fixed circular axis and the diameter of the base circle are located on the same vertical plane and pass through the center of the left seat and the right seat of the X-direction fixed seat. The two bolts of the Y-direction fixing part are on the same straight line and on the same vertical plane as the diameter of the base circle, thereby ensuring that after the support rod is fixed, the projection point of the main rod on the base coincides with the center of the base circle, thereby improving the fixing stability of the entire device.

[0015] Furthermore, the center of the base substrate is set as a rectangular hollow structure, which, on the one hand, prevents the main rod of the support rod from rubbing and colliding with the base during rotation around the fixed circular axis when the position is adjusted during installation, and on the other hand, reserves space for signal connection cables.

[0016] Furthermore, an X-direction horizontal centering tube (including a horizontal tube and a bubble-type horizontal centering device) is installed in the inner cavity of the hollow structure at the center of the base substrate along the X direction, and a Y-direction horizontal centering tube is provided at the top of the vertical main rod of the support rod. The horizontal centering tube is centered in the X direction or the Y direction by the bubbles in the liquid.

[0017] Furthermore, the connection plate of the base is connected to four edges of the square base plate through hinges.

[0018] Furthermore, a plurality of bolt holes are arranged on the connection plate of the base in a circumferential direction, and the base is fixedly installed on the ground by passing bolts or screws therethrough. Preferably, the bolts are expansion screws.

[0019] Furthermore, the main rod end of the support rod is nested with the fixed circular shaft in such a way that the fixed circular shaft penetrates the main rod end along the X direction, and the connection keeps the main rod rotatable relative to the fixed circular shaft and maintains friction (such as the nesting hole on the main rod is slightly larger than the fixed circular shaft).

[0020] Furthermore, the limiting piece for fixing the cross bar is disc-shaped to prevent the supporting rod from shifting sideways.

[0021] Furthermore, the integrated GNSS receiver is composed of a chip with a built-in GNSS-IR algorithm in a conventional GNSS portable receiver, and the structure includes an integrated GNSS receiver, a built-in antenna, a receiver, a microprocessor, a controller and a power supply.

[0022] In the above technical solution of the utility model, the X-direction fixing seat, the Y-direction rod fixing seat and the base plate of the base are integrated by injection molding, and the main rod and the fixed cross rod of the support rod are integrated by injection molding.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] 1. The portable, stable and wind-resistant GNSS tide level observer described in the utility model has a base configured as a plurality of pieces connected by hinges, so that the ground disc can be fixed on some non-planar fixed objects (such as coastal rocks, etc.), which is easy to install, has a safe and flexible layout environment, and is not easily damaged by waves, etc.

[0025] 2. The utility model adopts a secondary horizontal centering design, and has strong terrain adaptability; compared with fixed GNSS receivers, the utility model gives full play to the advantages of portable receivers, such as low cost, convenient carrying and arrangement, and repeatable disassembly and arrangement; compared with traditional portable GNSS receivers, the utility model no longer uses a tripod for installation, but uses expansion bolts to fix it to the ground, and designs x and y direction fixing seats to form secondary fixation, ensuring that the instrument can still work in a stable posture during typhoons.

[0026] 3. In the water level observation system, the utility model integrates the GNSS-IR optimization algorithm into the GNSS receiver based on the latest GNSS-IR technology, so as to realize the automatic processing of satellite signal-to-noise ratio data and the output of tide data.

[0027] 4. The portable, portable, stable and wind-resistant GNSS tide level observation instrument described in the utility model focuses on improving the stable wind-resistant capability of the portable GNSS receiver, can achieve horizontal centering in various terrain conditions, and can freely adjust the tilt and rotation angle of the receiver, fully utilizing the advantages of the portable device while meeting the stable wind-resistant requirements in extreme weather such as typhoons. It has a reasonable design, simple overall installation and disassembly, and has the advantages of strong environmental adaptability and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the utility model;

[0029] Figure 2 It is a structural schematic diagram of the base part of the utility model;

[0030] Figure 3 It is a top view of the utility model.

[0031] In the figure: 1 hinge, 2 bolt hole, 3 base, 4 X-direction horizontal centering tube, 5 X-direction fixing seat, 6 Y-direction fixing seat, 7 fixed circular shaft, 8 bolts, 9 nuts, 10 limit plates, 11 fixed cross bar, 12 main rod of support rod, 13 Y-direction horizontal centering tube, 14 integrated GNSS receiver, 15 built-in antenna. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Example 1

[0034] The portable, portable, stable and wind-resistant GNSS tide level observation instrument described in this embodiment includes a base 3, an X-direction fixing part, a Y-direction fixing part, a support rod and an integrated GNSS receiver;

[0035] The base 3 is composed of a square base plate and four connecting plates connected to the four edges of the square base plate by hinges 1 respectively. The connecting plates are hinged to the base plate to form a circular base with the center point of the square base plate as the center of the circle. A plurality of bolt holes 2 are arranged on the connecting plates of the base along the circumferential direction. The base is fixed to the ground by passing expansion screws through the screw holes to realize the installation and fixation of the entire observation instrument. The base connected by hinges is conducive to stable installation on uneven ground.

[0036] The X-direction fixing part includes an X-direction fixing seat 5 and a fixing circular shaft 7; the X-direction fixing seat is composed of a left seat and a right seat, which are fixed vertically on the base plate along the X direction and are symmetrical about the diameter of the base circle, and are both composed of an arc-shaped side plate with an arc larger than a semicircle (a part with a larger area left after a circle is cut by a diameter smaller than the diameter) and a concentric arc-shaped outer rail, and a gap is reserved between the side plate and the outer rail as a slide rail; the left seat and the right seat are connected into one by the fixing circular shaft 7;

[0037] The support rod comprises a vertical main rod 12 and a fixed cross bar 11 located at the lower end of the main rod and integrally formed with the main rod (not movable or rotatable relative to each other). The two ends of the fixed cross bar are provided with threads and matching nuts 9, and the two ends of the fixed cross bar respectively pass through the slide rails of the left seat and the right seat and maintain sliding connection. The threads are located at the two ends of the fixed cross bar after passing through the slide rail. The fixed cross bar on the other side of the slide rail opposite to the nut is provided with a disc-shaped limit plate 10, which is used to work together with the nut to fix and limit the displacement (anti-lateral displacement) of the support rod in the X direction. The end of the main rod 12 and the fixed circular shaft 7 are nested in such a way that the fixed circular shaft passes through the end of the main rod along the X direction, and the connection is just able to rotate relative to each other. The fixed circular shaft 7 is fixedly connected to the left seat and the right seat to realize the fixation of the support rod on the fixed part in the X direction; the connection between the fixed circular shaft 7 and the main rod is kept relatively rotating, and the sliding of the fixed cross bar in the slide rail is coordinated to facilitate the adjustment of the vertical main rod of the support rod to keep it vertical during installation.

[0038] The Y-direction fixing part includes a Y-direction fixing seat 6 and a bolt 8. The Y-direction fixing seat is composed of an upper side seat and a lower side seat. The upper side seat and the lower side seat are vertically fixed on the base plate along the Y direction and are symmetrical about the diameter of the base circle. The upper side seat and the lower side seat are provided with screw holes matching the threads on the bolts. The bolts pass through the screw holes on the upper side seat and the lower side seat respectively to achieve opposite screwing in the Y direction. The screwing screw is connected to the lower part of the main rod of the support rod to fix the position and limit the displacement of the main rod in the Y direction.

[0039] The fixed circular axis and the diameter of the base circle are located on the same vertical plane and pass through the center of the left and right seats of the X-direction fixed seat. The two bolts of the Y-direction fixing part are on the same straight line and on the same vertical plane as the diameter of the base circle, thereby ensuring that after the support rod is fixed, the projection point of the main rod 12 on the base coincides with the center of the base circle, thereby improving the fixing stability of the entire device.

[0040] The center of the base substrate is set as a rectangular hollow structure, which, on the one hand, prevents the main rod of the support rod from rubbing and colliding with the base during the rotation around the fixed circular axis when the position is adjusted during installation, and on the other hand, reserves space for signal connection cables.

[0041] The X-direction horizontal centering tube 4, the top of the vertical main rod of the support rod is provided with a Y-direction horizontal centering tube 13. The horizontal centering tube is centered by the bubbles in the liquid to perform centering in the X-direction or Y-direction.

[0042] The integrated GNSS receiver 14 is composed of a GNSS portable receiver with a built-in GNSS-IR algorithm chip. The integrated GNSS receiver is fixed to the top of the main pole 12 and includes an integrated GNSS receiver, a built-in antenna, a receiver, a microprocessor, a controller and a power supply.

[0043] Working principle: The portable, stable and wind-resistant GNSS tide level observation instrument is fixed from bottom to top by driving expansion bolts into expansion bolt holes 2 to connect with the surface of the location where it is to be arranged. The hinge 1 can be folded downward, so even if the surface is not flat (such as a large rock), it can be fixed; the bubble in the center of the horizontal centering tube in the x direction is centered by rotating the connecting plate, so that the main rod 12 of the support rod remains vertically perpendicular to the horizontal direction; the main rod 12 is nested on the fixed circular shaft 7, and the fixed cross bar 11 is in the x direction. On the slide rail of the rod fixing seat 5, the support rod can rotate around the fixed circular axis; the limit plate 10 limits the large displacement of the main rod in the x direction, and the thread on the outside of the fixed crossbar cooperates with the nut 9. After adjusting the rotation of the main rod and centering the bubble of the horizontal centering tube 13 in the y direction, the rotating nut applies pressure inward to the x-direction fixing seat. The large positive pressure makes the friction extremely high, and the main rod can no longer rotate. At this time, the initial fixation is completed; the bolts 8 on the y-direction rod fixing seat are screwed inward to limit the displacement of the lower end of the main rod 12 in the y direction, thereby realizing secondary fixation. After the fixation is completed, the GNSS tide level observation instrument can maintain observation in extreme weather conditions.

[0044] Integrated GNSS receiver: It is composed of a chip with a built-in GNSS-IR tide inversion algorithm in a traditional GNSS portable receiver (the algorithm can be found in patent application 2023113489034), and the tide value is inverted using GNSS-IR technology. The global satellite navigation system (GNSS) network is very developed. At present, there are a large number of satellites in orbit that continuously transmit signals in the sky. The signal can be received by the built-in antenna 15 in the GNSS receiver, but some signals will not be received directly, but will be captured after being reflected by the observed water surface. The data of this reflected signal will interfere with the direct signal and be recorded by the signal-to-noise ratio data. The signal-to-noise ratio sequence received by the antenna will give the relative height difference (reflection height) between the detected water surface and the observation instrument through the built-in microprocessor and the inversion algorithm developed based on Ubantu, thereby obtaining the height of the observed water surface. Traditional GNSS portable receivers are also suitable for this portable and stable installation device of the utility model.

[0045] This portable, removable, stable and wind-resistant GNSS tide level observer will receive satellite data in real time when working. It should be placed in an unobstructed place above the GNSS receiver and should avoid being blocked by trees. Large glass curtain walls will also affect the quality of satellite signals, so it should be avoided to be installed on the side of the building or in places with more glass curtain walls. At present, the reflection height below 20 meters has a good monitoring effect. In the monitoring area with a small tidal range, the range can be increased to 70-80 meters by specific improvements to the observer, and it can be installed on the outside of most roofs. This portable, removable, stable and wind-resistant GNSS tide level observer is reasonably designed and has the advantages of being portable and efficient.

Claims

1. A portable, stable and wind-resistant GNSS tide level observation instrument, characterized in that: The structure comprises a base (3), an X-direction fixing portion, a Y-direction fixing portion, a support rod and an integrated GNSS receiver; The base is composed of a square base plate and four connecting plates respectively hinged to the four edges of the square base plate. The connecting plates are hinged to the base plate to form a circular base with the center point of the square base plate as the center of the circle. The connecting plates are connected to the ground by screws to realize the installation and fixation of the entire observation instrument. The X-direction fixing portion comprises an X-direction fixing seat (5) and a fixing circular shaft (7); the X-direction fixing seat comprises a left seat and a right seat, the left seat and the right seat are fixed vertically on the base plate along the X-direction and are symmetrical about the diameter of the base circle, and are both composed of an arched side plate with an arc greater than a semicircle and an arc-shaped outer rail with the same center, and a gap is reserved between the side plate and the outer rail as a slide rail; the left seat and the right seat are connected into one piece via the fixing circular shaft (7); The support rod comprises a vertical main rod (12) and a fixed cross rod (11) located at the lower end of the main rod and integrally formed with the main rod; threads and matching nuts (9) are provided at both ends of the fixed cross rod, and the two ends of the fixed cross rod respectively pass through the slide rails of the left seat and the right seat and maintain sliding connection, the threads are located at both ends of the fixed cross rod after passing through the slide rail, and a limit plate (10) is provided on the fixed cross rod on the other side of the slide rail opposite to the nut, which is used to work with the nut to fix the support rod in the X direction and limit displacement, the end of the main rod is nested with the fixed circular shaft (7), and the fixed circular shaft is fixedly connected to the left seat and the right seat to achieve the fixation of the support rod on the X-direction fixed part; the fixed circular shaft and the main rod (12) are kept in relative rotation at the joint, and cooperate with the sliding of the fixed cross rod in the slide rail, so as to facilitate the adjustment of the vertical main rod of the support rod to maintain verticality during installation; The Y-direction fixing portion comprises a Y-direction fixing seat (6) and a bolt (8), wherein the Y-direction fixing seat is composed of an upper side seat and a lower side seat, wherein the upper side seat and the lower side seat are vertically fixed on the base plate along the Y direction and are symmetrical about the diameter of the base circle, wherein the upper side seat and the lower side seat are provided with screw holes matching the threads on the bolts, wherein the bolts respectively pass through the screw holes on the upper side seat and the lower side seat to achieve opposite screwing in the Y direction, wherein the screwing screws are connected to the lower part of the main rod of the support rod to fix the position of the main rod and limit the displacement in the Y direction; The integrated GNSS receiver (14) is composed of a GNSS portable receiver with a chip having a built-in GNSS-IR algorithm, and the integrated GNSS receiver is fixed on the top of the main pole (12).

2. The portable, mobile, stable and wind-resistant GNSS tide level observation instrument according to claim 1 is characterized in that: The diameter of the fixed circular axis (7) and the circle of the base (3) are located on the same vertical plane and pass through the center of the left seat and the right seat of the X-direction fixed seat. The two bolts of the Y-direction fixed portion are on the same straight line and on the same vertical plane as the diameter of the base circle, thereby ensuring that after the support rod is fixed, the projection point of the main rod (12) on the base coincides with the center of the base circle, thereby improving the fixing stability of the entire device.

3. The portable, mobile, stable and wind-resistant GNSS tide level observation instrument according to claim 1 is characterized in that: The center of the base plate of the base (3) is arranged as a rectangular hollow structure.

4. The portable, mobile, stable and wind-resistant GNSS tide level observation instrument according to claim 1 is characterized in that: An X-direction horizontal centering tube (4) is installed in the inner cavity of the hollow structure at the center of the base substrate along the X direction, and a Y-direction horizontal centering tube (13) is arranged at the top end of the vertical main rod of the support rod.

5. The portable, mobile, stable and wind-resistant GNSS tide level observation instrument according to claim 1 is characterized in that: The connection plate of the base is connected to the four edges of the square base plate through hinges.

6. The portable, mobile, stable and wind-resistant GNSS tide level observation instrument according to claim 1 is characterized in that: A plurality of bolt holes (2) are arranged on the connection plate of the base in a circumferential direction, and bolts or screws are passed through the base to fix it on the ground.

7. The portable, mobile, stable and wind-resistant GNSS tide level observation instrument according to claim 1 is characterized in that: The end of the main rod (12) of the support rod is nested with the fixed circular shaft (7) in such a way that the fixed circular shaft penetrates the end of the main rod along the X direction, and the joint can be relatively rotatable.

8. The portable, mobile, stable and wind-resistant GNSS tide level observation instrument according to claim 1 is characterized in that: The limiting piece (10) of the fixed cross bar (11) is disc-shaped and prevents the supporting bar from moving sideways.

9. The portable, mobile, stable and wind-resistant GNSS tide level observation instrument according to claim 1, characterized in that: The integrated GNSS receiver (14) is composed of a conventional GNSS portable receiver chip with a built-in GNSS-IR algorithm, and the structure includes an integrated GNSS receiver, a built-in antenna (15), a receiver, a microprocessor, a controller and a power supply.

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