Marine on-site monitoring system

Abstract

The invention discloses a marine on-site monitoring system which is divided into a three-layer network structure or a four-layer network structure, system application is realized through'hardware configurable and software configurable ', a system network and a factory management network both adopt redundant industrial Ethernet, and an on-site controller also adopts a redundant design of one main controller and one standby controller. When any network or any device breaks down, the standby network or the standby device is switched to the working network or the working device in time, normal operation of the ship can be guaranteed, and data loss cannot be caused.

Description

Technical Field

[0001] The present invention relates to the technical field of ship monitoring, and in particular to a ship field monitoring system. Background Art

[0002] Ship control systems usually include several components such as power control system, propulsion control system, rudder control system, fire control system, security control system, mission control system, engine room monitoring system, etc. At present, with the development of information technology, the various control systems of ships have gradually realized information integration and data comprehensive utilization in terms of information fusion and interconnection from the early independent mode, and developed information application systems such as full-ship comprehensive monitoring, intelligent integrated platform, and integrated platform management system, which facilitates the crew's ship operation and operation maintenance and reduces the crew's workload.

[0003] However, if a device or network in the ship's control system fails, a certain function of the ship will not be realized, and the ship will not be able to operate normally. Summary of the invention

[0004] In view of this, the present invention provides a marine on-site monitoring system to solve the problems existing in the above-mentioned background technology.

[0005] A marine field monitoring system includes a process control layer, a system network layer, multiple host computers and an enterprise management layer.

[0006] The process control layer includes a main controller, a redundant controller, and a load device connected to the main controller and the redundant controller;

[0007] The system network layer includes a main system network and a redundant system network, and each host computer, main controller and redundant controller are connected to the main system network and the redundant system network;

[0008] The enterprise management layer includes an enterprise management network and a monitoring screen. The monitoring screen is connected to the enterprise management network. The enterprise management network is connected to the main system network through a firewall so that data of the main system network can flow unidirectionally to the enterprise management network.

[0009] Preferably, it also includes a factory management network, and there are multiple process control layers, each process control layer corresponds to a system network layer, all system network layers are connected to the factory management network, and the factory management network is connected to the enterprise management network through a firewall.

[0010] Preferably, the plant management network comprises a main plant pipeline network and a redundant plant management network.

[0011] Preferably, the maximum number of bytes of a single frame of data transmitted by the main system network, the redundant system network, the enterprise management network, the main plant pipeline network and the redundant plant management network is 1512 bytes.

[0012] Preferably, the data structure of a single frame of data includes an Ethernet frame header, an IP header, a UDP header and UDP user data.

[0013] Preferably, the working mode of the marine field monitoring system is determined by user configuration, and the main controller and the redundant controller automatically select the non-main control redundant mode and the hot standby redundant mode according to the user configuration information.

[0014] Preferably, when the working mode of the marine field monitoring system is the non-master redundant mode, only the master controller works, and the master controller transmits data to the corresponding host computer through its corresponding main system network or redundant system network;

[0015] When the working mode of the marine field monitoring system is hot standby redundant mode, both the main controller and the redundant controller are in hot standby redundant mode. At any time, only the main controller works normally. The redundant controller backs up the working data of the main controller. When the main controller fails, the redundant controller becomes the main controller and continues to work.

[0016] The beneficial effects of the present invention are:

[0017] The present invention divides the ship field monitoring system into a three-layer network structure or a four-layer network structure, realizes system application through "hardware configurable and software configurable", and both the system network and the factory management network adopt redundant industrial Ethernet, and the field controller also adopts a one-master-one-backup redundant design. When any network or any device fails, the backup network or backup device is promptly switched to the working network or working device, thereby ensuring the normal operation of the ship and preventing data loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is an architecture diagram of the marine field monitoring system of the first embodiment.

[0020] Figure 2 It is an architecture diagram of the marine field monitoring system of the second embodiment. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0022] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0023] In order to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings.

[0024] Embodiment 1, as Figure 1 As shown, the present invention provides a marine field monitoring system, including a process control layer, a system network layer, multiple host computers and an enterprise management layer.

[0025] The process control layer includes a main controller, a redundant controller, and load devices connected to the main controller and the redundant controller.

[0026] The system network layer includes a main system network and a redundant system network, and each host computer, main controller and redundant controller are connected to the main system network and the redundant system network. The host computers include various types, such as an engineer station, an operator station, a service station, etc. The engineer station, the operator station and the service station are all connected to the main system network and the redundant system network. The engineer station, the operator station and the service station can be interconnected with the controller or redundant controller on site through the main system network or the redundant system network. The main system network and the redundant system network can also be connected with a GPS time calibrator (i.e., a GPS time server), a printer, a large screen station, a computing server, an OPC Server, etc.

[0027] The enterprise management layer includes an enterprise management network and a monitoring screen. The monitoring screen is connected to the enterprise management network. The enterprise management network is connected to the main system network through a firewall so that data of the main system network can flow unidirectionally to the enterprise management network.

[0028] The load devices include but are not limited to regulating valves, solenoid valves, electric valves, pressure transmitters, temperature transmitters, frequency converters, and PLCs. The load devices transmit their acquisition signals or status signals to the main controller, which processes the received data to issue control instructions to one or several load devices. At the same time, the main controller transmits the received data and the issued control instructions to the corresponding host computer or server through the main system network or redundant system network for storage, and transmits all data to the redundant controller through the main system network or redundant system network for data backup. The main controller can also transmit the received data and the issued control instructions through the main system network or redundant system network and the enterprise management network to the monitoring screen for real-time display, so that the monitor can understand the operating status of the on-site load devices through the monitoring screen.

[0029] The communication between the above-mentioned main controller or redundant controller and the load equipment on site adopts the redundant Profibus-DP bus protocol, which can complete the process or on-site communication tasks in real time, quickly and efficiently.

[0030] The main controller and redundant controller both include control module, at least one IO module, various communication modules (such as communication module, remote communication module, heterogeneous communication module), power module. The communication between control module, IO module, communication module and power module belongs to intra-station communication, and the interfaces in the station use Profibus-DP bus communication. The main controller and redundant controller use full-duplex RS485 / RS422 level standard (meeting EIA-485 / 422 standard, because full-duplex communication mode is used, hereinafter referred to as RS422), which is realized by routing on the backplane PCB, with a baud rate of up to 50Mbps / 1.5Mbps; the communication between the main controller and the expansion chassis is realized by the communication module in the main controller and the expansion module in the expansion chassis, and the two use cables for data transmission, with a maximum baud rate of 1.5Mbps; the communication between the main controller and the remote chassis is realized by the communication between the remote communication module in the main controller and the remote expansion module in the remote chassis, and the two use optical fiber for data transmission, with a maximum baud rate of 1.5Mbps, and the communication distance is optional, up to 20km.

[0031] The communication between the main controller and the redundant controller, and the communication between the main controller and the redundant controller and the engineer station / operator station belong to off-site communication. The main controller and the redundant controller are connected to the main system network and the redundant system network through the RJ45 system network port on their chassis, and the engineer station / operator station is also connected to the main system network and the redundant system network. Therefore, the communication between each field controller and between the field controller and the engineer station / operator station can be achieved through the network of the system network layer. The network of the system network layer adopts the 100M / 1000M adaptive Ethernet level standard (meeting the IEEE802.3 series standards), and each field controller and engineer station / operator station supports this interface.

[0032] The communication between the main controller and redundant controller and third-party devices also belongs to off-site communication. The communication interface between the two depends on the interface adopted by the third-party device. This application supports a variety of third-party devices: MODBUS-RTU devices, user-defined protocols, etc. are supported through the serial communication module, DP communication devices are supported through the DP communication module, and Ethernet communication devices are supported through the Ethernet communication module.

[0033] The serial communication module and DP communication module use Profibus-DP bus communication to support full / half duplex RS485 / RS422 level standards (meet EIA-485 / 422 standards). The Ethernet communication module uses 100M / 1000M Ethernet level standards (meet IEEE802.3 series standards).

[0034] Usually, when a single UDP frame of data is too large, IP fragmentation will be performed, which may cause data loss. Therefore, in this embodiment, the maximum number of bytes of a single frame of data transmitted by the main system network, redundant system network, enterprise management network, main factory pipeline network and redundant factory management network is 1512 bytes. The data structure of each single frame of data includes an Ethernet frame header, an IP header, a UDP header and UDP user data, wherein the Ethernet frame header is 12 bytes, the IP header is 20 bytes, the UDP header is 8 bytes, and the maximum number of UDP user data is 1472 bytes.

[0035] The working mode of the marine field monitoring system of the present application is determined by user configuration, and the main controller and the redundant controller automatically select the non-main control redundant mode and the hot standby redundant mode according to the user configuration information.

[0036] When the working mode of the marine field monitoring system is non-master control redundant mode, that is, single configuration mode, only the main controller works, and the redundant controller does not work. The main controller transmits data to the corresponding host computer through its corresponding main system network or redundant system network, that is, in this working mode, only one system network is used for communication, and the other system network is closed. In actual use, whether the main system network or the redundant system network works depends on the slot of the main controller network. If the slot of the main controller network is slot 1, the main system network is used for data interaction and transmission. If the slot of the main controller network is slot 2, the redundant system network is used for data interaction and transmission.

[0037] At the same time, in addition to the control module, the main controller and the redundant controller are also configured with a redundant control module. Other IO modules and communication modules are also configured with exactly the same 1:1 redundant configuration. In the non-master redundant mode, when the main control module inside the main controller fails, the redundant control module configured inside it can immediately take over and replace the main control module, and the same is true for its IO module and communication module, to avoid affecting the normal operation of the main controller after a module fails; if the main controller fails completely, that is, it is completely ineffective and cannot be used, the redundant controller will work instead of the main controller, which will not affect the normal operation of the system.

[0038] When the working mode of the marine field monitoring system is hot standby redundant mode, both the main controller and the redundant controller are in hot standby redundant mode, the main system network and the redundant system network are both available, only the main controller works normally at any time, the redundant controller backs up the working data of the main controller, and when the main controller fails, the redundant controller becomes the main controller and continues to work.

[0039] The hot standby redundancy mode of the main controller or redundant controller includes controller chassis redundancy hot standby, control module hot standby and IO module hot standby inside the controller, and system network redundancy;

[0040] Controller chassis redundant hot standby: Both the main controller and the redundant controller are in hot standby redundant mode. At any time, only the main controller works normally. The redundant controller backs up the working data of the main controller. When the main controller fails, the redundant controller becomes the main controller and continues to work.

[0041] Hot standby of the control module inside the controller: at any time, only the main control module is in working state. The main control module completes normal business functions. The redundant control module, which is the backup of the main control module, periodically backs up the data of the main control module. When the main control module is abnormal, the redundant control module is upgraded to the main control module to continue normal work. The slot numbers of the main and standby control modules are 0 and 1. The user needs to enable the hot standby function of the main control and set the addresses of the two modules in the system network. The addresses are not allowed to be the same;

[0042] Hot standby of IO modules inside the controller: at any time, only one IO module is in working state. This IO module completes the normal data transmission function. The standby IO module monitors and backs up data of the main IO module currently in operation. If an abnormality occurs, the standby IO module is promoted to the main IO module to continue normal operation. The slots between the main IO module and the standby IO module are adjacent. The user needs to indicate that the two modules are in a hot standby relationship, that is, add the ID number of the module in a redundant relationship in each module;

[0043] System network redundancy: The links of the main system network and the redundant system network are independent and run simultaneously in the hot standby redundancy mode. The user only needs to turn on or off the redundancy function. When the user configures to turn off the redundancy function, the relevant modules on the main system network must be configured, otherwise it will not work normally; when the user configures to turn on the redundancy function, if the user only configures the device on any one link, the system functions normally but will prompt that the redundant link is abnormal.

[0044] Embodiment 2, as Figure 2 As shown, the marine field monitoring system of this embodiment includes a process control layer, a system network layer, a factory management network, multiple host computers and an enterprise management layer. The process control layer is provided with multiple layers, each process control layer corresponds to a system network layer, and all system network layers are connected to the factory management network. The factory management network is connected to the enterprise management network through a firewall.

[0045] The plant management network also includes a main plant pipeline network and a redundant plant management network.

[0046] The load device transmits its collected signal or status signal to the main controller, and the main controller processes the received data to issue control instructions to one or several load devices. At the same time, the main controller transmits the received data and the issued control instructions to the engineer station, service station or server through the main system network or redundant system network for storage, and transmits all data to the redundant controller through the main system network or redundant system network for data backup. The operator station can obtain data from the server through the main system network or redundant system network. At the same time, the engineer station can transmit certain data to the monitoring screen through the enterprise management network for real-time display, so that the monitor can understand the operating status of the on-site load equipment through the monitoring screen. The monitor can also obtain certain data from the server through the enterprise management network and the factory management network to display on the monitoring screen.

[0047] It should be clear that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A marine on-site monitoring system, characterized in that: Including process control layer, system network layer, multiple host computers and enterprise management layer, The process control layer includes a main controller, a redundant controller, and a load device connected to the main controller and the redundant controller; The system network layer includes a main system network and a redundant system network, and each host computer, main controller and redundant controller are connected to the main system network and the redundant system network; The enterprise management layer includes an enterprise management network and a monitoring screen. The monitoring screen is connected to the enterprise management network. The enterprise management network is connected to the main system network through a firewall so that data of the main system network can flow unidirectionally to the enterprise management network.

2. The marine on-site monitoring system according to claim 1, characterized in that: It also includes a factory management network. There are multiple process control layers, each process control layer corresponds to a system network layer, all system network layers are connected to the factory management network, and the factory management network is connected to the enterprise management network through a firewall.

3. The marine on-site monitoring system according to claim 2, characterized in that: The factory management network includes a main factory pipeline network and a redundant factory management network.

4. The on-site monitoring system for a ship according to claim 3, characterized in that: The maximum number of bytes of a single frame of data transmitted by the main system network, redundant system network, enterprise management network, main plant pipeline network and redundant plant management network is 1512 bytes.

5. The on-site monitoring system for a ship according to claim 4, characterized in that: The data structure of a single frame of data includes an Ethernet frame header, an IP header, a UDP header, and UDP user data.

6. The on-site monitoring system for a ship according to claim 1, characterized in that: The working mode of the marine field monitoring system is determined by user configuration, and the main controller and the redundant controller automatically select the non-main control redundant mode and the hot standby redundant mode according to the user configuration information.

7. The on-site monitoring system for a ship according to claim 6, characterized in that: When the working mode of the marine field monitoring system is the non-master redundant mode, only the master controller works, and the master controller transmits data to the corresponding host computer through its corresponding main system network or redundant system network; When the working mode of the marine field monitoring system is hot standby redundant mode, both the main controller and the redundant controller are in hot standby redundant mode. At any time, only the main controller works normally. The redundant controller backs up the working data of the main controller. When the main controller fails, the redundant controller becomes the main controller and continues to work.

Images