A topological sonar system for underwater detection

Abstract

The present invention relates to a topological sonar system for underwater detection, comprising a sonar monitoring unit, a sonar control module, a centralized control center, and a remote human-machine interface. The sonar monitoring unit comprises a liquid level meter, a sonar sensor, and a lifting assembly, wherein the liquid level meter is located above the sonar sensor. The sonar control module comprises a main controller, a network video encoder, a switch, and a wireless transmission module. The main controller input is connected to the liquid level meter and the sonar sensor, and the main controller output is connected to the lifting assembly, the network video encoder, and the switch. The network video encoder is connected to the switch, the switch is connected to the wireless transmission module, the wireless transmission module is connected to the centralized control center, and the centralized control center is connected to the remote human-machine interface. The present invention effectively solves the problems that a single sonar detection system cannot accurately obtain quantitative data on underwater foreign matter, cannot comprehensively monitor the water intake of a nuclear power plant, cannot ensure the safety of water intake in the nuclear power plant, and causes the water intake to be easily blocked, resulting in huge economic losses.

Description

Technical Field

[0001] The present invention belongs to the technical field of underwater detection, and in particular relates to a topological sonar system for underwater detection. Background Art

[0002] my country is a country with a high demand and consumption of energy. Currently, there are 11 nuclear power plants, and approximately 30 additional 1-million-kilowatt nuclear power plants are planned for construction in coastal areas by 2020. In 2011, nuclear power generated 87.4 billion kilowatts. Nuclear power plants require a continuous supply of large quantities of cooling water to provide cooling for heat engines and various cooling needs.

[0003] According to statistics from the World Association of Nuclear Operators (WANO), between 2008 and 2015, there were over 60 nuclear power plant shutdowns or reductions in power due to blockage of cooling water intakes worldwide. Since 2010, numerous nuclear power plants in my country have experienced blockages of cooling water intakes due to the accumulation of foreign matter, leading to emergency shutdowns of cooling systems. This has caused significant economic losses to the plants and posed new challenges to marine biodiversity monitoring technology at these intakes.

[0004] Currently, nuclear power plants receive water through pump station intakes and use a single sonar detection system to monitor the operating waters. However, this detection method has the following drawbacks: 1. Single sonar detection systems have blind spots and lack a network-based monitoring data system. This results in significant errors in the quantitative data collected about underwater foreign objects, making it impossible to comprehensively monitor nuclear power plant water intakes and ensure their safety. 2. Existing methods for monitoring underwater foreign objects at nuclear power plant water intakes are insufficient, and the quantitative data collected about underwater foreign objects lacks historical data, making it impossible to display monitoring information, compile statistics, and analyze monitoring data. 3. Existing sonar detection systems have complex wiring arrangements in the operating waters, making them difficult to inspect and repair. 4. Existing sonar detection systems are unable to promptly collect and clear underwater foreign objects in the operating waters, which can easily lead to blockages in nuclear power plant water intakes, causing frequent emergency shutdowns and significant economic losses. Summary of the Invention

[0005] The purpose of the present invention is to provide a topological sonar system for underwater detection in response to the shortcomings of the existing technology. Through the coordinated design of a sonar monitoring unit, a sonar control module, a centralized control center and a remote human-machine interface, the present invention effectively solves the problems that the existing single sonar detection system cannot accurately obtain quantitative data on underwater foreign objects, cannot comprehensively monitor the water intake of nuclear power plants, cannot ensure the safety of water intake of nuclear power plants, and is prone to blockage of water intakes, causing huge economic losses.

[0006] The technical solution adopted by the present invention is:

[0007] A topological sonar system for underwater detection includes several sonar monitoring units, a sonar control module, a centralized control center and a remote human-machine interface. The several sonar monitoring units constitute a topological structure. The sonar monitoring units include a liquid level meter, a sonar sensor and a lifting assembly. The liquid level meter and sonar sensor are respectively arranged on the lifting assembly, and the liquid level meter is located above the sonar sensor. The sonar control module includes a main controller, a network video encoder, a switch and a wireless transmission module. The input end of the main controller is respectively connected to the liquid level meter and sonar sensor, and the output end of the main controller is respectively connected to the lifting assembly, the network video encoder and the switch, the network video encoder is connected to the switch, the switch is connected to the wireless transmission module, the wireless transmission module is connected to the centralized control center, and the centralized control center is connected to the remote human-machine interface.

[0008] Furthermore, the sonar control module also includes a power supply module, which is electrically connected to the sonar sensor, lifting assembly, liquid level meter, network video encoder, main controller, switch and wireless transmission module respectively.

[0009] Furthermore, the centralized control center includes a server, intelligent analysis software and a monitoring host. The input port of the server is connected to the wireless transmission module of the sonar control module, the output port of the server is connected to the intelligent analysis software, and the intelligent analysis software is connected to the monitoring host.

[0010] Furthermore, the remote human-machine is a PC, DTU SMS group or mobile phone.

[0011] Furthermore, the lifting assembly includes a circular base and a concave shell, a fixing rod is provided on the bottom of the base, a cavity is provided inside the base, a motor is provided in the cavity, the shell is vertically provided in the middle of the base, the liquid level meter is installed on the upper part of the shell, a screw and a slider are provided in the shell, the screw is located in the middle of the shell, and the upper end of the screw is rotatably connected to the top of the shell, the lower end of the screw passes through the cavity of the base and is connected to the output shaft of the motor, the slider cooperates with the shell, and the slider passes through the screw and is rotatably connected to it, and the sonar sensor is provided on the slider.

[0012] Furthermore, a reducer is provided on the output shaft of the motor, and the output end of the reducer is fixedly connected to the lower end of the screw.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention effectively solves the problems of the existing single sonar detection system, such as the inability to accurately obtain quantitative data of underwater foreign objects, the inability to comprehensively monitor the water intake of the nuclear power plant, the inability to timely know the status of the water intake of the nuclear power plant, the inability to timely clean the water intake of the nuclear power plant, the inability to ensure the safety of the water intake of the nuclear power plant, the easy blockage of the water intake, and the huge economic losses, through the coordinated design of the sonar monitoring unit, the sonar control module, the centralized control center and the remote human-machine interface.

[0015] 2. The sonar monitoring unit of the present invention adopts a topological structure for monitoring, multiple monitoring units are installed in different positions, and the sonar image information obtained by the sonar monitoring units is spliced, thereby realizing all-round and blind-spot-free real-time detection of the water intake of the nuclear power plant.

[0016] 3. The present invention adopts wireless transmission technology, which effectively solves the problem of laying complex lines in the operating waters and the difficulty of inspection and maintenance.

[0017] 4. The present invention adopts networked transmission of data information, establishes multiple human-computer interaction modes for information display, and realizes mobile platform monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 This is the overall architecture diagram of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the lifting assembly of the present invention;

[0021] Figure 4 This is a flow chart of sonar image data processing according to the present invention;

[0022] In the figure: 1. Liquid level meter; 2. Lifting assembly; 3. Sonar sensor; 4. Network video encoder; 5. Main controller; 6. Switch; 7. Remote human-machine interface; 8. Centralized control center; 9. Wireless transmission module; 10. Power module; 11. Fixed rod; 12. Base; 13. Cavity; 14. Housing; 15. Screw; 16. Slider; 17. Reducer; 18. Motor. DETAILED DESCRIPTION

[0023] In order to better understand the technical content of the present invention, specific embodiments are provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0024] See also Figures 1 to 3The present invention provides a topological sonar system for underwater detection, including several sonar monitoring units, a sonar control module, a centralized control center 8, and a remote human-machine interface 7. The several sonar monitoring units form a topological structure. Each sonar monitoring unit is assigned a corresponding number. Several sonar monitoring single networks (topological structures) are used for detection to comprehensively ensure the safety of the water intake of the nuclear power plant. The sonar monitoring unit includes a liquid level meter 1, a sonar sensor 3, and a lifting assembly 2. The liquid level meter 1 and the sonar sensor 3 are respectively arranged on the lifting assembly 2, and the liquid level meter 1 is located above the sonar sensor 3. The model of the liquid level meter 1 is J Y-P260, the liquid level meter 1 collects the data of the liquid level in real time and transmits the data to the main controller 5. The main controller 5 sends the corresponding instructions to the lifting component 2, and the lifting component 2 drives the sonar sensor 3 to slide up and down until it slides to the appropriate position. The model of the sonar sensor 3 is 3RG6043-3MM00, which ensures that the sonar sensor 3 always maintains a suitable underwater detection depth. The sonar sensor 3 is used to detect fish in the water area and scan the bottom of the water to obtain image information. The sonar sensors 3 set at different positions can realize multiple sonar sensors 3 in the same water area. The work does not interfere with each other. The sonar control module includes a main controller 5, a network video encoder 4, a switch 6 and a wireless transmission module 9. The input end of the main controller 5 is connected to the liquid level meter 1 and the sonar sensor 3 respectively, and the output end of the main controller 5 is connected to the lifting component 2, the network video encoder 4 and the switch 6 respectively. The main controller 5 transmits the image information scanned by the sonar sensor 3 to the network video encoder 4 for video encoding. Specifically, the sonar video image encoding is compressed into a network stream. The network video encoder 4 is connected to the switch 6. The switch 6 adopts a POE switch 6. The data is transmitted through the cooperation of the POE switch 6 and the wireless transmission module 9. The switch 6 is connected to the wireless transmission module 9. The wireless transmission module 9 is connected to the control center 8. The control center 8 obtains the on-site sonar scanning image and the working status of the equipment through the wireless transmission module 9, and stores and displays them. At the same time, it can also send instructions to control the sonar working mode. The control center 8 is connected to the remote human-machine 7. The remote human-machine 7 realizes the remote human-machine 7 interface and APP mobile software management through the Internet, which can display monitoring system information, monitoring data, and perform statistics and analysis, as well as remote control system operation.

[0025] Specifically, the sonar control module also includes a power supply module 10, which is electrically connected to the sonar sensor 3, the lifting assembly 2, the liquid level meter 1, the network video encoder 4, the main controller 5, the switch 6, and the wireless transmission module 9. The power supply module 10 effectively provides power to the sonar sensor 3, the lifting assembly 2, the liquid level meter 1, the network video encoder 4, the main controller 5, the switch 6, and the wireless transmission module 9, ensuring reliable operation.

[0026] Specifically, the centralized control center 8 includes a server, intelligent analysis software, and a monitoring host. The server's input port is connected to the sonar control module's wireless transmission module 9, while the server's output port is connected to the intelligent analysis software, which in turn is connected to the monitoring host. The server provides the foundation and data support for the centralized control center 8, centrally managing sonar monitoring units, managing on-site monitoring data, checking equipment operating status, and setting operating modes. The intelligent analysis software is responsible for image information processing, data statistics, and issuing warnings. The monitoring host displays sonar scan images, foreign object count data, and equipment control information in real time.

[0027] Specifically, the remote HMI 7 is a PC, DTU SMS group or mobile phone. It exchanges information with the centralized control center 8 via the public network, and the PC web version and mobile phone APP client realize remote data communication connection. When the amount of foreign matter exceeds the set threshold, a warning message is sent via DTU SMS group.

[0028] Specifically, the lifting assembly 2 includes a circular base 12 and a concave shell 14. A fixing rod 11 is provided on the bottom of the base 12. A cavity 13 is provided inside the base 12. A motor 18 is provided in the cavity 13. The shell 14 is vertically arranged in the middle of the base 12. The liquid level meter 1 is installed on the upper part of the shell 14. A screw 15 and a slider 16 are provided in the shell 14. The screw 15 is located in the middle of the shell 14, and the upper end of the screw 15 is rotatably connected to the top of the shell 14. The lower end of the screw 15 passes through the cavity 13 of the base 12 and is connected to the output shaft of the motor 18. The slider 16 cooperates with the shell 14, and the slider 16 passes through the screw 15 and is rotatably connected with it. The sonar sensor 3 is arranged on the slider 16. The fixing rod 11 is inserted into the sand layer at the bottom of the water, and the circular base 12 is located on the surface of the sand layer at the bottom of the water. The fixed rod 11 and the base 12 are used in conjunction with each other to effectively prevent the shell 14 from shaking easily. The liquid level meter 1 installed on the shell 14 collects the liquid level height in real time and transmits the collected liquid level height data to the main controller 5. After the main controller 5 makes a judgment, it sends the corresponding instruction to the motor 18. The motor 18 drives the screw 15 to rotate through its output shaft. Since the slider 16 cooperates with the shell 14 and the slider 16 is rotatably connected to the screw 15, the screw 15 drives the slider 16 to slide up or down along the inner wall of the shell 14 while rotating, thereby driving the sonar sensor 3 installed on the slider 16 to slide, so that the sonar sensor 3 always maintains a suitable detection depth underwater; at the same time, a waterproof sealing ring can be provided at the connection between the screw 15 and the base 12 to effectively prevent the motor 18 from being immersed in water for a long time, which seriously affects the use effect and service life of the motor 18.

[0029] Specifically, a reducer 17 is provided on the output shaft of the motor 18, and the output end of the reducer 17 is fixedly connected to the lower end of the screw 15. The motor 18 effectively reduces the speed of the screw 15 through the reducer 17 to ensure that the screw 15 rotates smoothly.

[0030] The working principle of the present invention is:

[0031] When in use, the lifting assembly 2 is placed in the water operation area. Specifically, the fixing rod 11 of the lifting assembly 2 is inserted into and fixed in the sand layer at the bottom of the water, and the base 12 is located on the surface of the sand layer at the bottom of the water. The liquid level meter 1 collects liquid level data and transmits the data to the main controller 5. The main controller 5 sends corresponding instructions to the motor 18. The motor 18 drives the screw 15 to rotate in the housing 14. While the screw 15 rotates, it also drives the slider 16 on the screw 15 to slide up and down until it slides to a suitable position, ensuring that the sonar sensor 3 installed on the slider 16 always maintains a suitable detection depth underwater.

[0032] The sonar sensor 3 mounted on the housing 14 is used to detect schools of fish in the water area and scan the bottom of the water to obtain image information. The sonar sensor 3 sends the sonar scanned image to the main controller 5. The main controller 5 transmits the image information scanned by the sonar sensor 3 to the network video encoder 4 for video encoding. The network video encoder 4 compresses the sonar video image encoding into a network stream. The centralized control center 8 obtains the image information scanned by the on-site sonar sensor 3 through the wireless transmission module 9. The server of the centralized control center 8 is used to effectively manage the sonar monitoring unit, manage on-site monitoring data, check the equipment operating status, and set the working mode. The intelligent analysis software obtains quantitative data of underwater foreign objects through statistics, image splicing processing, and image recognition algorithms through the server database. The remote human-machine 7 interacts with the centralized control center 8 through the public network. The remote human-machine 7 realizes remote human-machine 7 interface and APP mobile terminal software management through the Internet, which can display monitoring system information, analyze and count detection data, and remotely control the system operation. The present invention can realize accurate underwater monitoring and information networking, comprehensively ensure the safety of the nuclear power plant water intake, and prevent the nuclear power plant water intake from being easily blocked and causing huge economic losses.

[0033] Figure 4 This is a flow chart for sonar image data processing. The specific steps are as follows:

[0034] 1. The server stores the image information scanned by the sonar sensor 3 of each sonar monitoring unit on site in real time, and marks its time and location.

[0035] 2. The scanning cycle of the sonar sensor 3 is selected to be 12 seconds / time. To ensure that the image processing is not disturbed, the intelligent analysis software extracts the scanning image information of each sonar sensor 3 from the server database every 60 seconds / time.

[0036] 3. To avoid factors such as irregular terrain and obstruction of obstacles in the monitored waters, the intelligent analysis software stitches the image information of each sonar sensor 3 on site to form a comprehensive water monitoring image.

[0037] 4. Binarize the stitched image to obtain data such as the percentage of each area and the total area percentage.

[0038] 5. Compare the real-time image data with the initial image in terms of pixel and color scale data to eliminate interference from underwater terrain obstacles.

[0039] 6. By comparing and analyzing the data, quantitative data such as the distance, area and volume of underwater foreign objects can be obtained.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A topological sonar system for underwater detection, characterized by: It includes several sonar monitoring units, sonar control modules, a centralized control center and a remote human-machine interface. The several sonar monitoring units constitute a topological structure. The sonar monitoring units include a liquid level meter, a sonar sensor and a lifting assembly. The liquid level meter and the sonar sensor are respectively arranged on the lifting assembly, and the liquid level meter is located above the sonar sensor. The sonar control module includes a main controller, a network video encoder, a switch and a wireless transmission module. The input end of the main controller is respectively connected to the several liquid level meters and the several sonar sensors using wireless transmission technology, the output end of the main controller is connected to the several lifting assemblies using wireless transmission technology, the output end of the main controller is respectively connected to the network video encoder and the switch, the network video encoder is connected to the switch, the switch is connected to the wireless transmission module, the wireless transmission module is connected to the centralized control center, and the centralized control center is connected to the remote human-machine interface. The lifting assembly includes a circular base and a concave shell, a fixing rod is provided on the bottom of the base, a cavity is provided inside the base, a motor is provided in the cavity, the shell is vertically arranged on the middle part of the base, the liquid level meter is installed on the upper part of the shell, a screw and a slider are provided in the shell, the screw is located in the middle part of the shell, and the upper end of the screw is rotatably connected to the top of the shell, the lower end of the screw passes through the cavity of the base and is connected to the output shaft of the motor, the slider cooperates with the shell, and the slider passes through the screw and is rotatably connected thereto, the sonar sensor is arranged on the slider, the fixing rod is used to be inserted into the sand layer at the bottom of the water, and the circular base is used to be located on the surface of the sand layer at the bottom of the water.

2. The topological sonar system for underwater detection according to claim 1, characterized in that: The sonar control module also includes a power supply module, which is electrically connected to the sonar sensor, lifting assembly, liquid level meter, network video encoder, main controller, switch and wireless transmission module respectively.

3. The topological sonar system for underwater detection according to claim 1, characterized in that: The centralized control center includes a server, intelligent analysis software and a monitoring host. The input port of the server is connected to the wireless transmission module of the sonar control module, the output port of the server is connected to the intelligent analysis software, and the intelligent analysis software is connected to the monitoring host.

4. The topological sonar system for underwater detection according to claim 1, characterized in that: The remote human machine is a PC, DTU SMS group or mobile phone.

5. The topological sonar system for underwater detection according to claim 1, characterized in that: A reducer is provided on the output shaft of the motor, and the output end of the reducer is fixedly connected to the lower end of the screw.

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