A remote control system and control method for crane based on optical fiber communication

Abstract

The present invention provides a remote control system and control method for a crane based on optical fiber communication, comprising a control system and a monitoring system, wherein the monitoring system comprises a video core switch, a monitoring terminal and a camera terminal, the monitoring terminal is connected to the video core switch via a network cable, the video core switch is connected to the camera terminal via an optical fiber, the camera terminal is arranged on the crane, the camera terminal takes real-time photos of the surroundings of the crane and transmits the photographed images to the monitoring terminal; the control system comprises a control terminal, a control core switch and a crane terminal, the control terminal is connected to the control core switch via a network cable, the control core switch is connected to the crane terminal via an optical fiber, the crane terminal is arranged on the crane and drives the crane to move, and the control terminal controls the crane terminal to move; through this system, remote monitoring of the crane can be achieved, and remote control can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of crane control, and in particular to a remote control system and a control method for a crane based on optical fiber communication. Background Art

[0002] At present, pile-orbiting slewing cranes are usually installed on the pile legs of various offshore platforms. They are widely used because of their advantages such as small platform space occupation, compact structure, large lifting capacity and long lifting radius.

[0003] For example, the patent document with Chinese patent application number 201711236045.9 and publication date of October 15, 2019 discloses a crane, which includes a mechanical part and a control part. The control part includes a hydraulic system. The hydraulic control system includes a PLC automatic control system, an emergency manual system, a luffing system for driving a luffing winch, a main lifting system for driving a main lifting winch, a secondary main lifting system for driving a secondary main lifting winch, a slewing system for driving a slewing mechanism, a main motor, a main pump and a hydraulic oil tank. The main motor drives the main pump, which is connected to the hydraulic oil tank. The main oil supply pipeline formed at the output end of the main pump supplies oil to the luffing system, the main lifting system, the secondary main lifting system and the slewing system respectively through a hydraulically controlled proportional multi-way valve. The PLC automatic control system controls the hydraulically controlled proportional multi-way valve through an electric proportional pressure reducing valve group. The emergency manual system includes an emergency pump group and a hydraulic handle connected to the hydraulic oil tank. The emergency pump group controls the luffing system, the main lifting system, the secondary main lifting system and the slewing system through the hydraulic handle.

[0004] However, some cranes described in this document still require manual operation on the crane. Pile-slewing cranes are usually installed on offshore platforms, where wireless signals are weak and remote control cannot be achieved reliably. In addition, once an emergency occurs, the safety of workers at sea is difficult to guarantee. Summary of the Invention

[0005] The present invention provides a remote control system and a control method for a crane based on optical fiber communication, which can realize remote monitoring of the crane and remote control.

[0006] To achieve the above-mentioned purpose, the technical solution of the present invention provides, on the one hand: a remote control system for a crane based on fiber optic communication, comprising a control system and a monitoring system, the monitoring system comprising a video core switch, a monitoring terminal and a camera terminal, the monitoring terminal being connected to the video core switch via a network cable, the video core switch being connected to the camera terminal via an optical fiber, the camera terminal being arranged on the crane, the camera terminal taking real-time photos of the crane's hook condition, cab control panel condition, main winch condition, auxiliary winch condition, boom winch condition, tripod condition, boom head condition and the interior of the power room and transmitting the photographed images to the monitoring terminal; the control system comprising a control terminal, a control core switch and a crane terminal, the control terminal being connected to the control core switch via a network cable, the control core switch being connected to the crane terminal via an optical fiber, the crane terminal being arranged on the crane and driving the crane to move, the control terminal controlling the crane terminal to move according to the crane condition displayed on the monitoring terminal.

[0007] The above structure, through the camera terminal on the crane, makes it possible to remotely monitor the status of the crane through the monitoring terminal, and then process the video obtained by the camera terminal through the video core switch to ensure that the video on the monitoring terminal is high in clarity, so that the operator can remotely grasp the current status of the crane, and then control the crane terminal through the control terminal according to the monitoring status of the crane, thereby realizing remote control of the crane, thereby ensuring that the operator does not need to work on the site of the offshore crane, so as to avoid the problem that the safety of the operator is not guaranteed when an emergency occurs in the crane. At the same time, when the video core switch and the camera terminal need to be transmitted through optical fiber, the clarity of the transmitted video can be ensured, and when the control core switch and the crane terminal are transmitted through optical fiber, the speed of signal transmission can be ensured.

[0008] Furthermore, the monitoring terminal also includes a video server, which is connected to the video core switch. The video server is connected to the monitoring screen via a network cable, and the camera terminal transmits the image to the monitoring screen.

[0009] The above settings transmit the images captured by the camera terminal to the monitoring screen for viewing through the video server.

[0010] Furthermore, the monitoring terminal includes a monitoring computer.

[0011] The above settings enable the control of the camera terminal through the monitoring computer.

[0012] Furthermore, the camera terminal includes more than one camera.

[0013] The above settings ensure that the status of each position of the crane can be monitored by setting up more than one camera located at multiple positions of the crane, thereby facilitating remote control of the crane.

[0014] Furthermore, the camera terminal also includes a video switch, which is used to process the signal of the video obtained by the camera terminal. The video switch is connected to the video core switch via optical fiber, the camera is connected to the video switch, and the video switch is also connected to the video recorder via a network cable.

[0015] The above settings, through the video switch, ensure the consistency of the video signals entering the video core switch, facilitating signal transmission between the camera terminal and the monitoring terminal.

[0016] Furthermore, the control terminal includes a remote PLC operating console.

[0017] The above settings are used to control the crane terminal through the remote PLC console.

[0018] Furthermore, the crane terminal includes a crane PLC control system, and the crane PLC control system is connected to the control core switch via a control switch.

[0019] The above settings can realize remote control of the crane by remotely operating the crane PLC control system.

[0020] Furthermore, it also includes an RCMS monitoring host, which is connected to the control core switch and monitors the crane terminal.

[0021] The above settings monitor the crane terminal through the RCMS monitoring host, so that the various states of the crane terminal equipment can be monitored in real time, thereby ensuring that fault information can be discovered in time and facilitating crane maintenance.

[0022] The present invention also provides a remote control method for a crane based on optical fiber communication, comprising: (1) one or more camera terminals acquiring crane conditions, including hook conditions, cab control panel conditions, main winch conditions, auxiliary winch conditions, luffing winch conditions, tripod conditions, boom head conditions, and conditions inside a power room, and transmitting the conditions to a video core switch for processing via optical fiber communication and then displaying the conditions on a monitoring terminal;

[0023] (2) If the camera terminal monitors the lifting button, main winch opening button, and auxiliary winch opening button on the cab control panel, obtain whether the hook moves, whether the main winch moves, and whether the auxiliary winch moves through the corresponding camera terminal, and then highlight the video corresponding to the hook movement, main winch movement, and auxiliary winch movement on the monitoring terminal; if the movement of the hook, main winch, and auxiliary winch does not correspond, go to step (3);

[0024] (3) The control terminal sends corresponding control instructions to the control core switch, and the control core switch sends control signals to the crane terminal and controls the movement of the crane terminal.

[0025] The above setting first monitors the operation status on the cab control panel, and then determines the corresponding crane operation status based on the control room operation status, so that targeted monitoring can be carried out according to the cab operation status and corresponding operations can be performed when there is no correspondence.

[0026] Furthermore, in step (2), if the movement conditions of the hook, main winch, and auxiliary winch do not correspond, including: the hook moves, the main winch and the auxiliary winch are not opened, or the hook does not move, and the main winch and the auxiliary winch are rotating rapidly; step (3) includes: the control terminal sends a control instruction to the control core switch to stop the movement of the hook or stop the movement of the main winch and the auxiliary winch.

[0027] The above arrangement can determine whether the hook or the main winch or the auxiliary winch is in an abnormal movement through the movement of the hook, the main winch and the auxiliary winch, and then control and shut down, thereby ensuring safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the system of the present invention.

[0029] Figure 2 Flowchart of the present invention. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figure 1 As shown, a remote control system for a crane based on optical fiber communication includes a control system 1 and a monitoring system 2, wherein the monitoring system 2 includes a video core switch 21, a monitoring terminal 22 and a camera terminal 23, wherein the monitoring terminal 22 is connected to the video core switch 21 via a network cable 01, and the video core switch 21 is connected to the camera terminal 23 via an optical fiber 02, and the camera terminal 23 is arranged on a crane (not shown in the figure), and the camera terminal 23 shoots the surroundings of the crane in real time and transmits the shot image to the monitoring terminal 22; the control system 1 includes a control terminal 11, a control core switch 12 and a crane terminal 13, wherein the control terminal 11 is connected to the control core switch 12 via a network cable 01, and the control core switch 12 is connected to the crane terminal 13 via an optical fiber 02, and the crane terminal 13 is arranged on the crane and drives the crane to move, and the control terminal 11 controls the crane terminal 13 to move.

[0032] The monitoring terminal 22 also includes a video server 24, which is used to convert the format of the video transmitted by the monitoring terminal 22 and store the transmitted video. The video server 24 is connected to the video core switch 21, which is used to process the video signal transmitted by the camera terminal 23. The video server 24 is connected to the monitoring screen 25 via the network cable 01, and the camera terminal 23 transmits the image to the monitoring screen 25. The video server 24 transmits the image captured by the camera terminal 23 to the monitoring screen 25 for viewing.

[0033] The monitoring terminal 22 includes a monitoring computer. The monitoring computer is used to control the camera terminal.

[0034] The camera terminal 23 includes one or more cameras 231, which monitor the crane's hook, cab control panel, main winch, auxiliary winch, luffing winch, tripod, boom head, and the interior of the power room. The monitoring computer controls the camera angles to capture images from different locations on the crane. By installing one or more cameras 231 at multiple locations on the crane, the status of each crane position can be monitored, facilitating remote control of the crane.

[0035] The camera terminal 23 also includes a video switch 232, which is connected to the video core switch 21 via an optical fiber 02. The camera 231 is connected to the video switch 232, which is also connected to the video recorder 233 via a network cable 01. The video switch 232 facilitates signal transmission between the camera terminal 23 and the monitoring terminal 22.

[0036] The control terminal 11 includes a remote PLC operating console. The crane terminal 13 is controlled by the remote PLC operating console.

[0037] The crane terminal 13 includes a crane PLC control system, which is connected to the control core switch 12 via a control switch 131. By remotely operating the crane PLC control system, the crane can be remotely controlled.

[0038] The system also includes an RCMS monitoring host 3, which is connected to the control core switch 12 and monitors the crane terminal 13. Monitoring the crane terminal 13 through the RCMS monitoring host 3 enables real-time monitoring of the various statuses of the crane terminal 13 devices, thereby ensuring timely detection of fault information and facilitating crane maintenance. In this embodiment, RCMS (Robustel Cloud Manager Service) is a modular SD-WAN IoT device management cloud platform. The data processing process performed by the video core switch and the control core switch is conventional technology, and the specific details of this technology will not be repeated here.

[0039] like Figure 2 As shown, the control method of the remote control system includes: (1) one or more camera terminals 23 obtain the crane status, including the hook status, the cab control panel status, the main winch status, the auxiliary winch status, the luffing winch status, the tripod status, the boom head status and the internal status of the power room, and transmit it to the video core switch 21 for processing through optical fiber communication and then display it on the monitoring terminal 22;

[0040] (2) If the camera terminal 23 monitors the lifting button, the main winch opening button, and the auxiliary winch opening button on the cab control panel, the corresponding camera terminal 23 is used to obtain whether the hook is moving, whether the main winch is moving, and whether the auxiliary winch is moving, and then the corresponding video of the hook movement, main winch movement, and auxiliary winch movement is highlighted on the monitoring terminal; if the movement of the hook, main winch, and auxiliary winch does not correspond, go to step (3);

[0041] (3) The control terminal 11 sends a corresponding control instruction to the control core switch 12, and the control core switch 12 sends a control signal to the crane terminal 13 and controls the movement of the crane terminal 13.

[0042] In this embodiment, in step (2), if the movement conditions of the hook, main winch, and auxiliary winch do not correspond, it includes: the hook moves, the main winch and the auxiliary winch are not opened, or the hook does not move, and the main winch and the auxiliary winch are rotating rapidly; step (3) includes: the control terminal 11 sends a control instruction to stop the movement of the hook or stop the movement of the main winch and the auxiliary winch to the control core switch 12.

[0043] The working principle of the present invention is: by installing a camera terminal 23 on the crane, the status of the crane can be remotely monitored through the monitoring terminal 22, and then the video obtained by the camera terminal is processed through the video core switch to ensure that the video clarity on the monitoring terminal is high, so that the operator can remotely grasp the current status of the crane, and then control the crane terminal 13 through the control terminal 11 according to the monitoring status of the crane, thereby realizing remote control of the crane, thereby ensuring that the operator does not need to operate on the site of the offshore crane, so as to avoid the problem that the safety of the operator is not guaranteed when an emergency occurs in the crane, and at the same time, when the video core switch and the camera terminal need to be transmitted through optical fiber, the clarity of the transmitted video can be ensured, and when the control core switch and the crane terminal are transmitted through optical fiber, the speed of signal transmission can be ensured.

Claims

1. A remote control system for a crane based on optical fiber communication, characterized in that: It includes a control system and a monitoring system. The monitoring system includes a video core switch, a monitoring terminal and a camera terminal. The monitoring terminal is connected to the video core switch via a network cable. The video core switch is connected to the camera terminal via an optical fiber. The camera terminal is set on the crane. The camera terminal shoots the crane hook, cab control panel, main winch, auxiliary winch, luffing winch, tripod, boom head and the interior of the power room in real time and transmits the shot images to the monitoring terminal. The control system includes a control terminal, a control core switch and a crane terminal. The control terminal is connected to the control core switch via a network cable. The control core switch is connected to the crane terminal via an optical fiber. The crane terminal is set on the crane and drives the crane to move. The control terminal controls the crane terminal to move. Also includes remote control methods: (1) One or more camera terminals capture the crane status, including the hook status, cab control panel status, main winch status, auxiliary winch status, luffing winch status, tripod status, boom head status and the internal status of the power room, and transmit it to the video core switch through optical fiber communication for processing and then displayed on the monitoring terminal; (2) If the camera terminal monitors the lifting button, main winch opening button, and auxiliary winch opening button on the cab control panel, obtain whether the hook moves, whether the main winch moves, and whether the auxiliary winch moves through the corresponding camera terminal, and then highlight the video corresponding to the hook movement, main winch movement, and auxiliary winch movement on the monitoring terminal; if the movement of the hook, main winch, and auxiliary winch does not correspond, go to step (3); (3) The control terminal sends corresponding control instructions to the control core switch, and the control core switch sends control signals to the crane terminal and controls the movement of the crane terminal.

2. The remote control system for a crane based on optical fiber communication according to claim 1, characterized in that: The monitoring terminal also includes a video server, which is connected to a video core switch. The video server is connected to a monitoring screen via a network cable, and the camera terminal transmits images to the monitoring screen.

3. The remote control system for a crane based on optical fiber communication according to claim 1, characterized in that: The monitoring terminal includes a monitoring computer.

4. The remote control system for a crane based on optical fiber communication according to claim 3, characterized in that: The camera terminal includes more than one camera, which monitors the crane's hook condition, cab control panel condition, main winch condition, auxiliary winch condition, luffing winch condition, tripod condition, boom head condition and the interior of the power room. The camera angle is changed by controlling the monitoring computer to shoot different positions of the crane.

5. The remote control system for a crane based on optical fiber communication according to claim 4, characterized in that: The camera terminal also includes a video switch, which is used to process the signal of the video obtained by the camera terminal. The video switch is connected to the video core switch via optical fiber, the camera is connected to the video switch, and the video switch is also connected to the video recorder via a network cable.

6. The remote control system for a crane based on optical fiber communication according to claim 1, characterized in that: The control terminal includes a remote PLC operating console.

7. The remote control system for a crane based on optical fiber communication according to claim 6, characterized in that: The crane terminal includes a crane PLC control system, and the crane PLC control system is connected to the control core switch through a control switch.

8. The remote control system for a crane based on optical fiber communication according to claim 1, characterized in that: It also includes an RCMS monitoring host, which is connected to the control core switch and monitors the crane terminal.

9. The remote control system for a crane based on optical fiber communication according to claim 1, characterized in that: In step (2), if the movement conditions of the hook, main winch, and auxiliary winch do not correspond, including: the hook moves, the main winch and the auxiliary winch are not opened, or the hook does not move, and the main winch and the auxiliary winch are rotating rapidly; step (3) includes: the control terminal sends a control instruction to stop the movement of the hook or stop the movement of the main winch and the auxiliary winch to the control core switch.

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