High-pile frame wharf intelligent low-voltage shore power device based on Internet of Things

Abstract

The utility model relates to an intelligent low-voltage shore power device for a high-pile frame wharf based on the Internet of Things. The intelligent low-voltage shore power device comprises a ship shore power main loop, a cable management device and an intelligent controller ZK which are mutually connected through the Internet of Things, the shore power main loop is a loop for collecting shore-based electric energy and supplying and protecting the electric energy to the ship; the shore power cable management device is used for winding and unwinding a ship shore power supply cable according to the water level change and adjusting the position of a ship shore power connection box SC; and the intelligent controller ZK is used for monitoring the operation state of the shore power facility, the electric quantity parameter of the ship shore power main loop, the operation information of the cable management device and the water level change in real time, and analyzing and processing the data. According to the utility model, the power receiving ship can be conveniently connected with the shore power, the position of the shore power connection box SC can be automatically adjusted to prevent water immersion, the shore power operation process can be remotely broadcasted through VHF, the shore power intelligent remote control system has a standard plug interface, an independent safety control loop and a two-dimensional code payment function, and finally, the intelligent remote control of shore power facilities is realized.

Description

Technical Field

[0001] This utility model relates to the field of shore power technology, and more specifically, to an intelligent low-voltage shore power device for a high-pile frame wharf based on the Internet of Things. Background Technology

[0002] Considering the berthing requirements of ships under the large water level difference in inland rivers, the hydraulic structures of wharves often adopt high-pile frame structures. The vertical difference between the wharf platform and the water level varies greatly with the water level, which brings difficulties to the layout and operation of shore power facilities.

[0003] Currently, some similar projects have installed shore power connection boxes at the front of the wharf. The position of the connection box can be adjusted by raising and lowering it along the hydraulic structure according to the actual water level and the shore power needs of the ships.

[0004] Currently, the technology has the following shortcomings: 1. The operation of shore power facilities mainly relies on manual labor, and the dock often needs to be equipped with professional shore power operators, which increases the dock's labor costs; 2. The automation level of shore power facilities is low, the shore power application process is cumbersome, and there are safety risks such as electric shock to personnel and water immersion of shore power junction boxes when operated improperly. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an intelligent low-voltage shore power device for high-pile frame wharves based on the Internet of Things, which can realize efficient management of high-pile frame wharves and intelligent operation of shore power facilities under unmanned operation conditions.

[0006] The technical solution adopted by this utility model to solve its technical problem is: to construct an intelligent low-voltage shore power device for a high-pile frame wharf based on the Internet of Things, including a ship shore power main circuit, a cable management device and an intelligent controller ZK that are interconnected by the Internet of Things.

[0007] The shore power main circuit is a circuit that collects shore-based electrical energy and supplies and protects the ship with electrical energy.

[0008] The shore power cable management device is used to retract and extend the ship's shore power supply cable according to changes in water level and to adjust the position of the ship's shore power junction box SC.

[0009] The intelligent controller ZK is used to monitor the real-time operating status of shore power facilities, the electrical parameters of the ship's shore power main circuit, the operating information of the cable management device, and water level changes, and to analyze and process the data.

[0010] According to the above scheme, the ship shore power main circuit includes the control and protection switch CPS, the ship shore power supply cable, and the ship shore power junction box SC;

[0011] The control and protection switch (CPS) is located at the front edge of the dock platform to collect electrical energy supplied by the shore-based power cable and to provide protection for the ship-shore power supply circuit.

[0012] The ship-to-shore power supply cable is connected to the control and protection switch CPS and the ship-to-shore power junction box SC respectively. The ship-to-shore power supply cable is used to provide a power transmission channel for ship-to-shore connection and an independent safety control circuit for ship-to-shore connection.

[0013] The ship shore power connection box SC provides a standard interface for connecting to the receiving ship and is located on the waterfront side.

[0014] According to the above scheme, the displacement distance of the shore power connection box SC is not less than 30m, and the moving speed is adjustable to not less than 25m / min.

[0015] According to the above scheme, the cable management device includes a cable reel, an electrical control box, a cable guide frame, a slide rail, a laser level gauge, a radar rangefinder, a reel diameter and coding sensor, a tension sensor, and a limit switch; the cable management device is used to reel in and unload the ship's shore power supply cable to adjust the position of the ship's shore power junction box SC.

[0016] The ship-to-shore power supply cable is wound on the cable reel, which is located below the dock platform. The electrical control box drives the cable reel to wind up and unwind the ship-to-shore power supply cable via a variable frequency motor.

[0017] The ship-to-shore power supply cable changes direction via the cable guide frame, causing the shore power junction box SC to rise and fall along the slide rail;

[0018] The slide rail is equipped with a limit switch near the top to limit the displacement of the shore power box SC and initialize the shore power operation procedure;

[0019] The laser level gauge monitors the height of the dock platform above the current water surface.

[0020] The radar rangefinder monitors the height of the shore power junction box SC above the current water surface.

[0021] The diameter and coding sensors monitor the winding and unwinding length of the ship-to-shore power supply cable, the rotation speed and direction of the cable reel.

[0022] The tension sensor monitors the tension on the ship-to-shore power supply cable.

[0023] According to the above scheme, the measurement accuracy of the laser level gauge and the radar rangefinder is no greater than 5cm.

[0024] According to the above scheme, the intelligent controller ZK is installed on the side of the control and protection switch CPS. The intelligent controller ZK includes a network interface, a human-machine interface, a module communication interface, and a shore power facility signal monitoring interface. The intelligent controller ZK uploads the status of the shore power facility and sends control parameters through the Internet of Things.

[0025] According to the above scheme, the network interface uses MQTT and HTTP communication protocols to communicate with the remote server, APP and mini-program IoT platform to upload the status of shore power facilities and send control parameters.

[0026] According to the above scheme, the human-machine interface is used to connect to the local HMI and to display, query and set the operating parameters of the shore power facility.

[0027] According to the above scheme, the module communication interface is used for control and protection switch CPS, frequency converter of electrical control box, and ship-to-shore connection communication.

[0028] According to the above scheme, the shore power facility signal monitoring interface is used for monitoring and control of the control and protection switch CPS, the frequency converter of the electrical control box, the laser level gauge, the radar rangefinder, the roll diameter and coding sensor, the tension sensor and the limit switch, and the independent safety control circuit for ship-shore connection.

[0029] The intelligent low-voltage shore power device for high-pile frame wharves based on the Internet of Things, as described in this utility model, has the following beneficial effects:

[0030] This invention can reduce the number of shore power maintenance personnel at docks, allowing ship owners to operate shore power themselves, increasing ship owner participation and promoting the adoption of shore power; it also monitors water level information in real time and automatically adjusts the position of the junction box to avoid the risk of the junction box being submerged in water. Attached Figure Description

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0032] Figure 1 This is a topology diagram of the layout of the intelligent low-voltage shore power device for a high-pile frame wharf based on the Internet of Things, according to this utility model.

[0033] Figure 2 This is the control topology diagram of the intelligent low-voltage shore power device for a high-pile frame wharf based on the Internet of Things of this utility model;

[0034] Figure 3 This is a diagram of the shore power supply system for the high-pile frame wharf based on this utility model;

[0035] Figure 4 This is a flowchart of shore power operation for this utility model;

[0036] In the diagram: 1. Control and protection switch CPS, 2. Ship-to-shore power supply cable, 3. Ship-to-shore power connection box SC, 4. Cable reel, 5. Electrical control box, 6. Cable guide frame, 7. Slide rail, 8. Laser level gauge, 9. Radar rangefinder, 10. Reel diameter and coding sensor, 11. Tension sensor, 12. Limit switch, 13. Intelligent controller ZK. Detailed Implementation

[0037] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0038] like Figure 1 As shown, this utility model's IoT-based intelligent low-voltage shore power device for high-pile frame wharves can monitor water level information in real time and automatically adjust the position of the junction box. It includes a ship-to-shore power main circuit, a cable management device, and an intelligent controller ZK13, all interconnected via the Internet of Things. The shore power main circuit collects shore-based electrical energy and supplies and protects the ship. The shore power cable management device is used to retract and extend the ship-to-shore power supply cable 2 according to water level changes and adjust the position of the ship-to-shore power junction box SC3. The intelligent controller ZK13 is used to monitor the real-time operating status of the shore power facilities, the electrical parameters of the ship-to-shore power main circuit, the operating information of the cable management device, and water level changes, and to analyze and process the data. This IoT-based intelligent low-voltage shore power device for high-pile frame wharves can monitor water level information in real time, automatically adjust the position of the junction box, and features a standard plug-in interface, an independent safety control circuit, and QR code payment functionality.

[0039] In a preferred embodiment of this invention, the main shore power circuit includes a control and protection switch CPS1, a shore power cable 2, and a shore power junction box SC3. The control and protection switch CPS1 is located at the forefront of the dock platform and is used to collect the electrical energy provided by the shore power cable and provide protection for the shore power supply circuit. The shore power cable 2 connects the control and protection switch CPS1 and the shore power junction box SC3, providing a power transmission channel for the shore connection and an independent safety control circuit for the shore connection. The shore power junction box SC3 provides a standard interface for connecting to the powered vessel and is located on the waterfront side. The displacement distance of the shore power junction box SC3 is not less than 30m, and its moving speed is adjustable to not less than 25m / min. The position of the shore power junction box SC3 can be corrected during shore power use. The current water level height of the shore power junction box SC3 is ΔHj = ΔHg + ε to prevent it from being submerged in water. The control and protection switch CPS1 integrates short-circuit and overload protection and contact switching control functions. It can be remotely operated and parameter set. The main body is equipped with a controller, which has real-time measurement, log recording and communication functions. The power supply cable is the channel for ship-to-shore power supply and integrates phase line and control line. The ship-to-shore power junction box SC3 is the standard interface for ship-to-shore connection.

[0040] In a preferred embodiment of this utility model, the cable management device includes a cable reel 4, an electrical control box 5, a cable guide frame 6, a slide rail 7, a laser level gauge 8, a radar rangefinder 9, a reel diameter and coding sensor 10, a tension sensor 11, and a limit switch 12. The cable management device is used to wind up and down the ship-to-shore power supply cable 2 to adjust the position of the ship-to-shore power junction box SC3. The ship-to-shore power supply cable 2 is wound on a cable reel 4, which is located below the dock platform to save dock work space. The control box 5 drives the cable reel 4 to wind up and down the ship-to-shore power supply cable 2 via a variable frequency motor. The ship-to-shore power supply cable 2 changes direction via a cable guide frame 6, causing the ship-to-shore power junction box SC3 to rise and fall along a slide rail 7. A limit switch 12 is installed near the top of the slide rail 7 to limit the displacement of the shore power box SC3 and initialize the shore power operation program. A laser level gauge 8 monitors the height of the dock platform above the current water surface. A radar rangefinder 9 monitors the height of the ship-to-shore power junction box SC3 above the current water surface. A winding diameter and coding sensor 10 monitors the winding length of the ship-to-shore power supply cable 2, the rotation speed and direction of the cable reel 4, and a tension sensor 11 monitors the tension on the ship-to-shore power supply cable 2. The measurement accuracy of the laser level gauge 8 and the radar rangefinder 9 is no greater than 5 cm.

[0041] In a preferred embodiment of this utility model, the cable reel 4 is used to wind up and unwind the shore power supply cable. The cable reel 4 is equipped with a variable frequency motor, a clamping device, and a diameter detection sensor. The cable reel 4 adjusts the position of the ship's shore power connection box SC3 by winding up and unwinding the shore power supply cable. The electrical control box 5 includes a circuit breaker and a frequency converter. The electrical control box 5 is used to drive and control the rotation direction and speed of the variable frequency motor. The diameter and speed can be calculated based on the diameter of the cable reel 4 and the signal feedback from the coded sensor 10. The cable guide frame 6 is used to ensure that the direction of the shore power supply cable after it comes out of the cable reel 4 is parallel to the hydraulic structure. A tension sensor 11 is installed on the cable guide frame 6. The slide rail 7 is installed on the hydraulic structure for positioning and lifting the ship's shore power connection box SC3. A limit switch 12 is provided on the top of the slide rail 7. The laser level gauge 8 is installed on the dock platform for measuring the water level. The radar rangefinder 9 is installed on the ship's shore power connection box SC3 to measure the elevation of the shore power connection box above the water level.

[0042] In a preferred embodiment of this utility model, the intelligent controller ZK13 is installed on the side of the control and protection switch CPS1. The intelligent controller ZK13 includes a network interface, a human-machine interface, a module communication interface, and a shore power facility signal monitoring interface. The intelligent controller ZK13 uploads the status of the shore power facility and sends control parameters through the Internet of Things (IoT). The network interface uses MQTT and HTTP communication protocols to communicate with remote servers, APPs, and mini-programs, etc., IoT platforms to upload the status of the shore power facility and send control parameters. The human-machine interface is used to connect to the local HMI for displaying, querying, and setting the operating parameters of the shore power facility. The module communication interface is used for communication between the control and protection switch CPS1, the frequency converter of the electrical control box 5, and the ship-shore connection. The shore power facility signal monitoring interface is used for monitoring and controlling the control and protection switch CPS1, the frequency converter of the electrical control box 5, the laser level gauge 8, the radar rangefinder 9, the roll diameter and coding sensor 10, the tension sensor 11, the limit switch 12, and the ship-shore connection independent safety control circuit, etc.

[0043] Working principle:

[0044] Based on IoT technology, the intelligent devices and intelligent controller ZK of the shore power main circuit and cable management device are connected to the IoT. The intelligent controller ZK monitors the operating status of the shore power facilities, the power parameters of the shore power main circuit, the operating information of the cable management device, and water level changes in real time. It analyzes and processes the data, uploads the status of the shore power facilities and sends control parameters through the IoT, adjusts the position of the shore power junction box SC to facilitate the connection of the receiving vessel to the shore power, and can automatically adjust the position of the shore power junction box SC to prevent water ingress. It can also remotely broadcast the shore power operation process via VHF. It has a standard plug-in interface, an independent safety control circuit, and QR code payment function, ultimately realizing intelligent remote control of the shore power facilities.

[0045] like Figure 4As shown, this utility model also provides a control method for intelligent low-voltage shore power facilities at a high-pile frame wharf based on the Internet of Things, including the following steps:

[0046] Initially, the intelligent controller ZK13 monitors the status of the shore power facility in real time. When a fault occurs, the intelligent controller ZK13 sends a fault signal to the IoT platform. The shore power connection box SC3, located at the top of the slide rail 7, triggers the limit switch 12, putting the shore power facility into its initial state. The intelligent controller ZK13 collects signals from the laser level gauge 8 to calculate the height ΔHa of the dock platform above the current water surface; it also collects signals from the radar rangefinder 9 to calculate the height ΔHj of the shore power connection box SC3 above the current water surface. Initially, θ = ΔHa - ΔHj.

[0047] After the vessel has berthed, the ship owner can scan the QR code at the berthing location or access a mobile application such as a mini-program to apply for shore power. The ship owner must fill in the relevant information about the vessel and the freeboard height ΔHg. Once the IoT platform confirms the application, the ship owner can operate the shore power connection box SC3 via the mobile application and broadcast the shore power operation information to the ship owner via VHF.

[0048] During the descent, the intelligent controller ZK13 collects feedback signals from the diameter and coding sensor 10 and the tension sensor 11 in real time, and calculates the length ΔLl of the shore power cable 2, the rotation speed ΔLv and direction of the cable drum 4, and the tension on the shore power cable 2, respectively. The electrical control box 5 drives the cable drum 4 to release the shore power cable 2 at a certain speed υ and tension F through the variable frequency motor. The intelligent controller ZK13 collects the feedback signal from the radar rangefinder 9 in real time and calculates the height ΔHj of the shore power connection box SC3 above the current water surface.

[0049] During the descent, if ΔLl≠ΔHa-(ΔHj+θ), where θ is the initial elevation difference between the laser level gauge 8 and the radar rangefinder 9, the shore power connection box SC3 encounters obstruction during descent, the electrical control box 5 stops driving the cable reel 4 to release the shore power supply cable 2, and the intelligent controller ZK13 sends a fault signal to the Internet of Things platform.

[0050] During the descent, when the shore power connection box SC3 is at a height ΔHj = ΔHg + ε (ε is approximately 1.0 meter for the boat owner to easily insert the shore power plug), the descent of the shore power connection box SC3 will stop, and the boat owner will be notified via VHF to insert the shore power plug.

[0051] The ship owner plugs in the shore power connector. The ZK13 smart controller checks if the independent safety control circuit for the ship-to-shore connection is connected. If the connection is confirmed, the shore power can be switched on via a mobile app. After the shore power is switched on, the ZK13 smart controller starts billing, and the ship uses shore power normally, broadcasting shore power operation information to the ship owner via VHF.

[0052] When using shore power, changes in water level cause variations in ΔHj. Therefore, the position of the shore power connection box SC3 needs to be adjusted to prevent it from being submerged in water. When Δξ=ΔHj-(ΔHg+ε)>β (β is 0.5 meters), the shore power connection box SC3 descends to a height of ΔHg+ε; when Δξ=ΔHj-(ΔHg+ε)<β, the shore power connection box SC3 ascends to a height of ΔHg+ε.

[0053] During shore power use, if ΔLl≠ΔHa-(ΔHj+θ), the intelligent controller ZK13 will operate the shore power emergency trip, send a fault signal to the IoT platform, and send a VHF signal to the ship owner to insert the shore power plug.

[0054] If the intelligent controller ZK13 detects that the independent safety control circuit for the ship-to-shore connection is not connected during the use of shore power, the intelligent controller ZK13 will operate the shore power emergency trip, send a fault signal to the Internet of Things platform, and send a VHF signal to the ship owner to insert the shore power plug.

[0055] When the vessel finishes its operations and is about to depart from its berth, the ship owner performs the shore power disconnection operation via a mobile app. After the shore power is disconnected, the intelligent controller ZK13 stops billing and sends the electricity consumption information to the IoT platform. It also broadcasts the shore power disconnection information to the ship owner via VHF. The ship owner then unplugs the power cord, scans the QR code on the shore power connection box SC3 with their mobile app to pay the bill, and operates the shore power connection box SC3 to access the internet.

[0056] During the upstream process, the intelligent controller ZK13 collects feedback signals from the roll diameter and coding sensor 10 and tension sensor 11 in real time, and calculates the winding length ΔLl of the shore power supply cable 2, the rotation speed ΔLv and direction of the cable drum 4, and the tension on the shore power supply cable 2, respectively. The electrical control box 5 drives the cable drum 4 to wind up the shore power supply cable 2 at a certain speed υ and tension F through the variable frequency motor.

[0057] During the upward movement, if F>ΔLl*lg+Sg+△ (△ is the error value), where lg is the weight per unit length of the cable and Sg is the weight of the shore power connection box SC3, the shore power connection box SC3 encounters an obstruction during upward movement. The control box 5 stops driving the cable reel 4 to release the shore power supply cable 2, and the intelligent controller ZK13 sends a fault signal to the Internet of Things platform.

[0058] During the upward movement, the shore power connection box SC3 moves upward along the slide rail 7, triggering the limit switch 12 to stop, and the shore power facility returns to its initial state. The shore power usage process is now complete.

[0059] Returning to the initial state, the shore power connection box SC3 is located at the top of the slide rail 7, triggering the limit switch 12, and the shore power facility is in the initial state, and θ=ΔHa-ΔHj.

[0060] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A smart low-voltage shore power device for a high-pile frame wharf based on the Internet of Things, characterized in that, This includes ship shore power main circuits, cable management devices, and smart controllers that are interconnected via the Internet of Things (IoT). The shore power main circuit is a circuit that collects shore-based electrical energy and supplies and protects the ship with electrical energy. The shore power cable management device is used to retract and extend the ship's shore power supply cable according to water level changes and adjust the position of the ship's shore power junction box; the intelligent controller is used to monitor the operating status of the shore power facilities, the power parameters of the ship's shore power main circuit, the operating information of the cable management device, and water level changes in real time.

2. The intelligent low-voltage shore power device for a high-pile frame wharf based on the Internet of Things as described in claim 1, characterized in that, The ship's shore power main circuit includes control and protection switches, ship-to-shore power supply cables, and ship-to-shore power junction boxes. The control and protection switch is located at the front edge of the dock platform to collect the electrical energy supplied by the shore power cable and to provide protection for the ship-shore power supply circuit. The ship-to-shore power supply cable is connected to the control and protection switch and the ship-to-shore power connection box respectively. The ship-to-shore power supply cable is used to provide a power transmission channel for ship-to-shore connection and an independent safety control circuit for ship-to-shore connection. The ship shore power connection box provides a standard interface for connecting to the receiving ship and is located on the waterfront side.

3. The intelligent low-voltage shore power device for a high-pile frame wharf based on the Internet of Things as described in claim 2, characterized in that, The shore power connection box has a displacement distance of not less than 30m and a moving speed of not less than 25m / min, which is adjustable.

4. The intelligent low-voltage shore power device for a high-pile frame wharf based on the Internet of Things as described in claim 2, characterized in that, The cable management device includes a cable reel, an electrical control box, a cable guide frame, a slide rail, a laser level gauge, a radar rangefinder, a reel diameter and coding sensor, a tension sensor, and a limit switch; the cable management device is used to reel in and out the ship's shore power supply cable to adjust the position of the ship's shore power junction box. The ship-to-shore power supply cable is wound on the cable reel, which is located below the dock platform. The electrical control box drives the cable reel to wind up and unwind the ship-to-shore power supply cable via a variable frequency motor. The ship-to-shore power supply cable changes direction via the cable guide frame, causing the shore power junction box to rise and fall along the slide rail; The slide rail is equipped with a limit switch near the top to limit the displacement of the shore power box and initialize the shore power operation procedure; The laser level gauge monitors the height of the dock platform above the current water surface. The radar rangefinder monitors the height of the shore power junction box above the current water surface. The diameter and coding sensors monitor the winding and unwinding length of the ship-to-shore power supply cable, the rotation speed and direction of the cable reel. The tension sensor monitors the tension on the ship-to-shore power supply cable.

5. The intelligent low-voltage shore power device for a high-pile frame wharf based on the Internet of Things as described in claim 4, characterized in that, The measurement accuracy of the laser level gauge and radar rangefinder is no greater than 5cm.

6. The intelligent low-voltage shore power device for a high-pile frame wharf based on the Internet of Things as described in claim 1, characterized in that, The intelligent controller is located on the side of the control and protection switch. The intelligent controller includes a network interface, a human-machine interface, a module communication interface, and a shore power facility signal monitoring interface. The intelligent controller ZK uploads the status of the shore power facility and sends control parameters through the Internet of Things.

7. The intelligent low-voltage shore power device for a high-pile frame wharf based on the Internet of Things as described in claim 6, characterized in that, The network interface uses MQTT and HTTP communication protocols to communicate with remote servers, APP and mini-program IoT platforms to upload shore power facility status and send control parameters.

8. The intelligent low-voltage shore power device for a high-pile frame wharf based on the Internet of Things as described in claim 7, characterized in that, The human-machine interface is used to connect to the local HMI for displaying, querying, and setting the operating parameters of the shore power facility.

9. The intelligent low-voltage shore power device for a high-pile frame wharf based on the Internet of Things as described in claim 8, characterized in that, The module communication interface is used for control and protection switches, frequency converters in electrical control boxes, and ship-to-shore communication.

10. The intelligent low-voltage shore power device for a high-pile frame wharf based on the Internet of Things as described in claim 9, characterized in that, The shore power facility signal monitoring interface is used for monitoring and controlling switches, frequency converters in electrical control boxes, laser level gauges, radar rangefinders, roll diameter and coding sensors, tension sensors and limit switches, and independent safety control circuits for ship-shore connections.

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