Online depth gauge calibration device for underwater vehicle

Abstract

The utility model discloses an online depth gauge calibration device for an underwater vehicle, and belongs to the technical field of ocean detection equipment. Comprising a manual hydraulic pump, a pressure sensor, an underwater vehicle depth gauge and a base plate, the manual hydraulic pump and the pressure sensor are installed on the base plate, the underwater vehicle depth gauge is sealed in an end cover of an underwater vehicle, an output port is further formed in the base plate, the manual hydraulic pump is connected with the pressure sensor and the output port through oil pipes, and the pressure sensor is connected with the output port through an oil pipe. The output port is connected with a pressure output pipe, and the pressure output pipe blocks the end cover, so that the underwater vehicle depth gauge is located in a closed space, and the pressure sensor and the underwater vehicle depth gauge collect depth data at the same time in the same pressure environment. The device has the advantages that on-line calibration can be achieved on the underwater vehicle, the situation that the sealing performance of the pressure-resistant cabin of the underwater vehicle is affected due to disassembly and assembly of the depth gauge of the underwater vehicle is avoided, the pressure-resistant sealing test needing to be conducted again after disassembly and assembly each time is omitted, the calibration efficiency can be remarkably improved, and the cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of marine detection equipment, and in particular relates to an online depth gauge calibration device for an underwater vehicle. Background Art

[0002] An unmanned underwater vehicle (UUV) is an unmanned underwater vehicle that operates underwater, either remotely or automatically, without a human operator. These vehicles primarily represent intelligent systems that replace divers or manned small submarines in high-risk underwater operations such as deep-sea exploration, rescue, and mine clearance. Therefore, UUVs are also referred to as "diving robots" or "underwater robots."

[0003] When operating a submersible in the deep sea, accurate depth measurement is crucial, directly impacting the vehicle's navigation and mission execution. However, existing depth gauge calibration methods typically require disassembling the instrument and sending it to a specialized testing facility for measurement, which is not only costly, but also time-consuming and complex.

[0004] In view of the above-mentioned prior art, the applicant has made a useful design, and the technical solution to be introduced below is produced in this context. Utility Model Content

[0005] The purpose of the utility model is to provide an online depth gauge calibration device for underwater submersibles, which can simulate different pressure conditions, significantly improve calibration efficiency and reduce costs.

[0006] The purpose of the utility model is achieved in this way. An online depth gauge calibration device for an underwater submersible includes a manual hydraulic pump, a pressure sensor, a submersible depth gauge and a base plate. The manual hydraulic pump and the pressure sensor are installed on the base plate. The submersible depth gauge is sealed in the end cover of the submersible. An output port is also provided on the base plate. The manual hydraulic pump is connected to the pressure sensor and the output port respectively through an oil pipe. The output port is connected to a pressure output pipe. The pressure output pipe blocks the end cover so that the submersible depth gauge is in a closed space. The manual hydraulic pump is used to increase the hydraulic value in the end cover so that the pressure sensor and the submersible depth gauge can collect depth data simultaneously under the same pressure environment.

[0007] In a specific embodiment of the present invention, it also includes a main control computer, an analog input module and a data processing system. The pressure sensor is connected to the data processing system through the analog input module, and the submersible depth gauge is connected to the data processing system through the main control computer. The data processing system receives and compares the depth data transmitted by the pressure sensor and the submersible depth gauge, obtains the error and generates a calibration report to confirm the error level of the submersible depth gauge.

[0008] In another specific embodiment of the present invention, the end cover is formed with a threaded hole on the cover surface, and an adapter is provided on the outer side of the end cover. One end of the adapter is threadedly connected to the threaded hole, and the other end is clamped with the pressure output pipe to form a pressure seal for the submersible depth gauge.

[0009] In another specific embodiment of the present invention, the manual hydraulic pump is connected to a liquid storage cup at one end, the liquid storage cup is equipped with a liquid storage cup stop valve, and the other end of the manual hydraulic pump is fixed to the base plate through a bracket.

[0010] In another specific embodiment of the present invention, the pressure sensor is a high-precision sensor for detecting and displaying pressure values ​​in real time. A sensor shut-off valve is connected to the bottom of the pressure sensor. The sensor shut-off valve is installed on a substrate and connected to a manual hydraulic pump through an oil pipe.

[0011] In another specific embodiment of the present invention, the output port is connected to an output stop valve at the lower end, the output stop valve is installed on the base plate, and is connected to a manual hydraulic pump through an oil pipe, and the upper end of the output port is connected to the pressure output pipe.

[0012] Due to the adoption of the above-mentioned structure, the present invention has the following beneficial effects compared with the prior art: compact structure, easy to be installed on the end cover of the submersible, does not take up too much space, and is adaptable to various types of underwater submersibles; the submersible depth gauge can be calibrated online on the submersible, avoiding the impact of the sealing of the submersible's pressure chamber due to the disassembly and assembly of the submersible depth gauge, eliminating the need for re-pressure sealing testing after each disassembly and assembly; equipped with a manual hydraulic pump, it can accurately adjust the pressure in the enclosed space and simulate the pressure environment at different depths, making the calibration process more flexible and accurate; the data processing system automatically calculates the error of the submersible depth gauge by comparing the readings of the high-precision pressure sensor and the submersible depth gauge, thereby simplifying the calibration operation process, reducing manual intervention, significantly improving calibration efficiency, reducing costs, and reducing dependence on professional measurement manufacturers, ensuring the accuracy and reliability of the depth gauge under various pressure conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the calibration platform of the utility model;

[0014] Figure 2 It is a cross-sectional view of the end cover of the utility model;

[0015] Figure 3 This is a connection diagram of the calibration system of the utility model.

[0016] In the figure: 1. Manual hydraulic pump, 11. Liquid storage cup, 111. Liquid storage cup stop valve; 2. Pressure sensor, 21. Sensor stop valve; 3. Submersible depth gauge; 4. Base plate; 5. Output port, 51. Output end stop valve; 6. Pressure output pipe; 7. Main control computer; 8. Analog input module; 9. Submersible, 91. End cover, 911. Threaded hole, 912. Adapter. DETAILED DESCRIPTION

[0017] The specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings. However, the description of the embodiments does not limit the technical solution. Any changes in form rather than substance based on the concept of the present invention should be regarded as within the scope of protection of the present invention.

[0018] In the following description, all concepts related to directionality (or orientation) such as up, down, left, right, front and back are with respect to the position state of the figure being described, and are intended to facilitate public understanding. Therefore, they should not be understood as special limitations on the technical solutions provided by the present invention.

[0019] See also Figure 1 and Figure 2 The present utility model relates to an online depth gauge calibration device for an underwater vehicle, comprising a manual hydraulic pump 1, a pressure sensor 2, a vehicle depth gauge 3, a base plate 4, an output port 5, and a pressure output pipe 6. The manual hydraulic pump 1 and pressure sensor 2 are mounted on the base plate 4. The base plate 4 also includes an output port 5. The manual hydraulic pump 1 is connected to the pressure sensor 2 and the output port 5 via oil pipes, respectively. The output port 5 is connected to the pressure output pipe 6. The vehicle depth gauge 3 is mounted within an end cap 91 of a vehicle 9, exposed to the external medium. To improve measurement accuracy, the end cap 91 has a threaded hole 911 formed on its surface. An adapter 912 is provided on the outside of the end cap 91. One end of the adapter 912 is threadedly connected to the threaded hole 911, and the other end is connected to the pressure output pipe 6. The pressure output pipe 6 seals the adapter 912, forming a pressure seal for the vehicle depth gauge 3, thereby confining the vehicle depth gauge 3 within a closed space. In this enclosed space, the manual hydraulic pump 1 accurately adjusts the pressure and gradually increases the hydraulic value in the enclosed space. The pressure sensor 2 uses a high-precision standard pressure gauge to detect and display the pressure change value in real time, so that the pressure sensor 2 and the submersible depth gauge 3 can simultaneously collect depth data under different pressure environments under the same pressure environment.

[0020] See Figure 3The present invention further includes a main control computer 7, an analog input module 8, and a data processing system installed within the computer. The pressure sensor 2 is connected to the data processing system via the analog input module 8, and the submersible depth gauge 3 is connected to the data processing system via the main control computer 7, forming a complete calibration system. The data processing system receives and compares the depth data transmitted by the pressure sensor 2 and the submersible depth gauge 3, determines the error, and generates a calibration report to confirm the error level of the submersible depth gauge 3.

[0021] See you further Figure 1 The manual hydraulic pump 1 is connected to a liquid reservoir cup 11 at one end, equipped with a liquid reservoir shutoff valve 111. The other end of the manual hydraulic pump 1 is secured to the base plate 4 via a bracket 112. The pressure sensor 2 is connected to a sensor shutoff valve 21 at its bottom, mounted on the base plate 4 and connected to the manual hydraulic pump 1 via a tubing. The output port 5 is connected to an output shutoff valve 51 at its lower end, mounted on the base plate 4 and connected to the manual hydraulic pump 1 via a tubing. The upper end of the output port 5 is connected to the pressure output pipe 6.

[0022] The manual hydraulic pump 1 is connected via oil pipes to the output port 5 and its output shutoff valve 51, the pressure sensor 2 and its sensor shutoff valve 21, and the liquid reservoir 11 and its liquid reservoir shutoff valve 111, forming a depth gauge calibration platform. This calibration platform is connected to the submersible depth gauge 3 via a pressure output pipe 6. The data processing system in the calibration system receives and compares the two depth readings. If an error is detected, an adjustment parameter is calculated and set for the submersible depth gauge 9 via dedicated equipment. This online calibration ensures the accuracy of the submersible depth gauge 3 readings during the submersible 9's mission, avoiding errors caused by sensor drift or other factors. The submersible depth gauge 3 can be calibrated online on the submersible 9, preventing the seal of the submersible's pressure chamber from being affected by disassembly and assembly. This eliminates the need for repeated pressure seal testing after each disassembly and assembly, significantly improving calibration efficiency and reducing costs. It also ensures the accuracy and reliability of the submersible depth gauge 3 under various pressure conditions.

Claims

1. An online depth gauge calibration device for an underwater vehicle, characterized by: The invention comprises a manual hydraulic pump (1), a pressure sensor (2), a submersible depth gauge (3) and a base plate (4). The manual hydraulic pump (1) and the pressure sensor (2) are mounted on the base plate (4). The submersible depth gauge (3) is sealed in an end cover (91) of a submersible (9). An output port (5) is also provided on the base plate (4). The manual hydraulic pump (1) is connected to the pressure sensor (2) and the output port (5) respectively through an oil pipe. The output port (5) is connected to a pressure output pipe (6). The pressure output pipe (6) blocks the end cover (91) so that the submersible depth gauge (3) is in a closed space. The manual hydraulic pump (1) is used to increase the hydraulic pressure value in the end cover (91) so that the pressure sensor (2) and the submersible depth gauge (3) can simultaneously collect depth data under the same pressure environment.

2. The online depth gauge calibration device for underwater vehicles according to claim 1, characterized in that: It also includes a main control computer (7), an analog input module (8) and a data processing system. The pressure sensor (2) is connected to the data processing system via the analog input module (8), and the submersible depth gauge (3) is connected to the data processing system via the main control computer (7).

3. The online depth gauge calibration device for an underwater vehicle according to claim 1, characterized in that: The end cover (91) is formed with a threaded hole (911) on the cover surface, and an adapter (912) is provided on the outer side of the end cover (91). One end of the adapter (912) is threadedly connected to the threaded hole (911), and the other end is clamped with the pressure output pipe (6) to form a pressure seal for the submersible depth gauge (3).

4. The online depth gauge calibration device for an underwater vehicle according to claim 1, characterized in that: The manual hydraulic pump (1) is connected to a liquid storage cup (11) at one end, and the liquid storage cup (11) is equipped with a liquid storage cup stop valve (111). The other end of the manual hydraulic pump (1) is fixed to the base plate (4) via a bracket (112).

5. The online depth gauge calibration device for underwater vehicles according to claim 1, characterized in that: The pressure sensor (2) is a high-precision sensor used for real-time detection and display of pressure values. The bottom of the pressure sensor (2) is connected to a sensor cut-off valve (21). The sensor cut-off valve (21) is mounted on a base plate (4) and connected to a manual hydraulic pump (1) via an oil pipe.

6. The online depth gauge calibration device for underwater vehicles according to claim 1, characterized in that: The output port (5) is connected to an output stop valve (51) at its lower end. The output stop valve (51) is mounted on a base plate (4) and is connected to a manual hydraulic pump (1) via an oil pipe. The upper end of the output port (5) is connected to the pressure output pipe (6).

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