KR100656268B1 - A Embeded Extension Alarm System for integrated ship automation control and a control method of it - Google Patents

Abstract

According to the present invention, a UDP communication port is duplexed, and if a fault occurs in the main UDP communication line by controlling duplicated UDP communication with one CPU, the communication line is quickly changed and a reserved UDP is provided. The present invention relates to an embedded extended alarm system for ship supervisory control and a control method thereof capable of transmitting and receiving data through a communication line.

The embedded extended alarm system for ship monitoring and control according to the present invention includes a main CPU for controlling redundant UDP communication, a DIP switch connected to the main CPU to determine a unique ID of each extended alarm system (EAS), and SRAM that stores variables and buffers in communication, Flash ROM that stores main program code, Display display for displaying various information of Extended Alarm System (EAS), Data bus for transferring various data on board, A main and reserve Ethernet controller in charge of physical layer communication, a pulse transformer for transmitting or receiving communication signals of the main and reserve Ethernet controllers to a LAN communication network, and a connector for connecting a communication line between the board and an external LAN communication network. It is provided.

Embedded extension alarm system, ship monitoring control system, UDP, communication line, redundancy

Description

Embeded Extension Alarm System for integrated ship automation control and a control method of it}

1 is an overall configuration diagram of a ship monitoring control system according to the present invention.

FIG. 2 is a block diagram showing the internal structure of the extended alarm system (EAS) of FIG.

3 is a flowchart illustrating a control method of an extended alarm system according to the present invention.

4 is a flowchart illustrating an embodiment of control of a duplicated UDP communication line in a control method of the extended alarm system (EAS) of FIG. 3.

5 is a flowchart illustrating a process of changing a communication port of UDP communication during a control process of the redundant UDP communication line of FIG. 4.

Explanation of symbols on the main parts of the drawings

11,12,... , 1n: alarm server 21,22,... , 2n: Extended alarm system

31: Main Hub 32: Reserve Hub

41: main UDP communication line 42: reserve UDP communication line

5: LAN communication network 102: main CPU

104: DIP switch 106: SRAM

108: flash ROM 110: LCD display                 

112: data bus 114, 114 ': Ethernet controller

116, 116 ': pulse transformer 118, 118': connector

The present invention relates to an extension alarm system (hereinafter referred to as EAS) among ship monitoring and control systems. More specifically, each configuration is integrated on one board and at the same time. The present invention relates to an embedded extended alarm system for ship supervisory control and a method of controlling the same, capable of dual UDP (User Datagram Protocol) communication with a single CPU.

Vessel supervisory control system accepts digital and analog input signals from sensors installed in various facilities in the vessel and transmits them to the upper system through the communication relay through the field bus communication line. The status of various equipment is displayed on the monitor, and digital and analog output signals from the upper system are transmitted through the communication relay to the lower system through the communication line of the field bus. Refers to a system that outputs to a drive device.

Such a ship supervisory control system is generally installed only in an ECR (Engine Control Room), not a server, which is a hardware capable of monitoring the system, installed in every place of the ship. Therefore, related crews, including watchers, have a problem that it is difficult to recognize the occurrence of the alarm unless it is in the ECR when the alarm occurs in the system.

Accordingly, an object of the present invention is to install an Extended Alarm System (EAS) integrated in one board, such as ECR, Wheel House, Engineer Room, Public Room, etc. The present invention provides an embedded extended alarm system for ship supervisory control and its control method so that crews can quickly recognize and respond to an alarm occurrence.

Another object of the present invention is to control the duplicated UDP communication with a single CPU to quickly switch the communication line when a fault occurs in the main UDP communication line, and to reserve the UDP communication line. The present invention provides an embedded extended alarm system for ship supervisory control and a control method thereof for transmitting and receiving data.

In order to achieve the above object, an embedded extended alarm system for ship monitoring and control according to the present invention includes a main CPU controlling duplicated UDP communication and a unique ID of each extended alarm system (EAS) connected to the main CPU. A DIP switch for determining the function of the controller, an SRAM for storing various variables and a buffer for communication, a flash ROM for storing the main program code, a display display for displaying various information of the Extended Alarm System (EAS), A data bus for transmitting various data, a main and reserve Ethernet controller that is in charge of physical layer communication, a pulse transformer for transmitting or receiving communication signals of the main and reserve Ethernet controllers to a LAN communication network, and the board and an external LAN communication network. A connector for connecting a communication line therebetween is provided.

In order to achieve the above object, the control method of the embedded extended alarm system for ship monitoring and control according to the present invention includes the steps of performing initialization for each component, and when the initialization is completed, the corresponding extended alarm system (EAS) from the alarm server. Downloading and displaying the component for a), receiving data from the upper alarm system and other extended alarm system (EAS) using UDP communication, and the data is completed in the main CPU Executing a timer for determining a period for each processing to be performed, generating a scan_tick of data received from the alert server and other Extended Alarm System (EAS) during the period during which the timer is executed; And performing a corresponding control routine according to the generated scan_tick.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

1 is an overall configuration diagram of a ship monitoring control system according to the present invention.

Referring to Figure 1, the ship monitoring and control system according to the present invention is the alarm server (Alarm Server) (11, 12, ..., 1n) that is a hardware (Hardward) that can monitor the whole system of the ship It is installed in the engine control room (ECR).

After extracting only the alarm system, a plurality of extension alarm systems (EAS; hereinafter referred to as EAS), which are configured compactly, are 21, 22, ..., 2n. In addition to ECR, each of the Engineer Room (1 / E) and Public Room, including the Wheel House (W / H), Chief Engineer (C / E) where the captain monitors voyages It is installed in Office, Mess, etc.). Thus, even when there is no watcher and associated crew in the ECR, the ship can be quickly aware of the alarm and take action.

EAS 21, 22, ..., 2n according to the present invention can be equipped with a maximum of 16, two hubs (i.e. main) with the alarm server (11, 12, ..., 1n) It is connected to a hub (Main Hub) 31 and a Reserve Hub (Reserve Hub) 32, and performs UDP (User Datagram Protocol) communication as a communication method. At this time, UDP communication lines 41 and 42 are configured for redundancy for communication reliability.

In addition, the extended alarm system (EAS) (21, 22, ..., 2n) is an embedded system (Embeded System) to integrate each configuration on one board (One-Board) and at the same time, one CPU Hardware and software are configured to enable redundant UDP communication. Therefore, when a fault occurs in the main UDP communication line 41, the main UDP communication line 41 may be immediately switched and data may be transmitted and received through the reserved UDP communication line 42.

At this time, the extended alarm system (EAS) 21, 22, ..., 2n allocates two Mac addresses and IP addresses to one CPU using a TCP / IP socket. Therefore, normally, the Mac address and IP address of the main are used, but if an error is detected in the communication through the heartbeat, the socket is closed, and the MAC address and IP address of the reserve are returned. Open the socket to control communication.

FIG. 2 is a block diagram illustrating an internal structure of the extended alarm system EAS of FIG. 1.

Referring to FIG. 2, the extended alarm system (EAS) 21, 22,..., 2n is connected to the main CPU 102 and the main CPU 102 to control redundant UDP communication. Dual In-Line Package (DIP) Switch 104, which determines a unique ID of each Extended Alarm System (EAS) 21, 22, ..., 2n, and stores various variables and buffers in communication. 512 Kbytes of SRAM 106 in charge of, 512 Kbytes of Flash ROM 108 for storing the main program code, LCD for displaying various information of the Extended Alarm System (EAS) ( A display and display device 110 such as a Liquid Crystal Display, a data bus 112 that transmits various data on the board 120, and a main and reservoir that are in communication with the physical layer. The communication signal between the Ethernet controller 114 and 114 'and the main and reserve Ethernet controllers 114 and 114' is L. Pulse Trans 116 and 116 'for transmitting or receiving to the AN network 5 and a Connector 118 for connecting a communication line between the board 120 and the external LAN communication network 5. 118 ').

Referring to the accompanying drawings, the operation and effects of the embedded extended alarm system for ship monitoring control consisting of the above configuration is as follows.

3 is a flowchart illustrating a control method of an extended alarm system (EAS) according to the present invention. Hereinafter, the display display device 110 used in the extended alarm system EAS according to the present invention is described as an LCD display, but is not limited thereto.

Referring to Figure 3, in addition to the ECR of the ship, the main CPU 102 of each of the embedded extended alarm system (EAS) (21, 22, ..., 2n) installed in the wheel house, each engineer room and public room, etc. If this is started, the initialization is performed for each component (S302).

Then, after receiving the component (Down-Load) for the corresponding extended alarm system (EAS) from the alarm server (11, 12, ..., 1n) (S304), the downloaded component to the LCD display 110 Display (S306).

Next, data is received using the UDP communication from the alarm server 11, 12, ..., 1n, which is the upper system, and other extended alarm system (EAS) 21, 22, ..., 2n (S308), and the main CPU ( In step S310, a timer (Timer) for determining a cycle for each process to be executed is executed.

During the period in which the timer is executed, the main CPU 102 scans data received from the alert server 11, 12, ..., 1n and other extended alarm system (EAS) 21, 22, ..., 2n. After generating the tick Scan_Tick, a corresponding control routine is performed according to the variable of the scan_tick (S312 to S364).

In this case, the process of the main CPU 102 to perform the corresponding control routine according to the scan_tick will be described in detail with reference to FIG. 1 as follows.

First, if the generated scan_tick variable is 0 (S312), the flag of Master_Key is checked, and if the flag of Master_Key is 1, the extended alarm system (EAS) 21, 22, ..., 2n is checked. A key signal is received from the front panel (S314) (S316). On the other hand, if the flag of the Master_Key is 0, it returns to an infinite loop and returns to step S308 of receiving data from the alert servers 11, 12, ..., 1n by using UDP communication (S308).

If the variable of the generated scan_tick is 1 (S318), the flag (Flag) of the Master_Retry is checked. If the flag of the Master_Retry is 1, the alarm server 11, 12, ..., 1n and other extended alarm system (EAS) are checked. ), Flow control is performed in UDP communication with (21, 22, ..., 2n) (S320) (S322). On the other hand, if the flag of the Master_Retry is 0, it returns to the infinite loop and returns to the step (S308) of receiving data from the alert servers 11, 12, ..., 1n by using UDP communication.

If the generated scan_tick variable is 2 (S324), the flag (Flag) of Master_Time is checked. If the flag of Master_Time is 1, the time every 1 second from the alarm server (11, 12, ..., 1n) Time) information is received and displayed on the LCD display 110 (S326) (S328). On the other hand, if the flag of Master_Time is 0, it returns to the infinite loop and returns to the step (S308) of receiving data from the alert servers 11, 12, ..., 1n by using UDP communication.

If the variable of the generated scan_tick is 3 (S330), the flag (Flag) of the Master_Box is checked, and if the flag of the Master_Box is 1, the execution state of the LCD display 110 is displayed in the box window of the LCD display 110. (S332) (S334). On the other hand, if the flag of the Master_Box is 0, the process returns to the endless loop and returns to the step (S308) of receiving data from the alert servers 11, 12, ..., 1n by using UDP communication.

If the variable of the generated scan_tick is 4 (S336), a flag of Master_Group is checked, and if the flag of Master_Group is 1, each alarm group received as a component on the LCD display 110 is checked. It displays the alarm state of (S338) (S340). On the other hand, if the flag of the Master_Group is 0, it returns to an infinite loop and returns to step S308 of receiving data from the alert servers 11, 12, ..., 1n using UDP communication (S308).

If the variable of the generated scan_tick is 5 (S342), a flag of Master_Alarm is checked, and if the flag of Master_Alarm is 1, the time and point information of the last generated alarm are displayed on the LCD display 110. (S344) (S346). On the other hand, if the flag of Master_Alarm is 0, the process returns to the infinite loop and returns to the step S308 of receiving data from the alarm servers 11, 12, ..., 1n by using UDP communication (S308).

If the generated scan_tick is 6 (S348), the flag of Master_Duty is checked, and if the flag of Master_Duty is 1, the state of the currently set duty is displayed on the LCD display 110. (S350) (S352). On the other hand, if the flag of Master_Duty is 0, it returns to an infinite loop and returns to step S308 of receiving data from the alert servers 11, 12, ..., 1n using UDP communication (S308).

If the variable of the generated scan_tick is 7 (S354), a flag of Master_Mode is checked, and if the flag of Master_Mode is 1, it is determined whether the current mode is in the ECR mode or the wheelhouse mode. The display is displayed on the LCD display 110 (S356) (S358). On the other hand, if the flag of the Master_Mode is 0, it returns to an infinite loop and returns to step S308 of receiving data from the alert servers 11, 12, ..., 1n by using UDP communication (S308).

Finally, if the generated scan_tick variable is 8 (S360), the flag (Flag) of Master_Beat is checked, and if the flag of Master_Beat is 1, Extended Alarm System (EAS) 21, 22, ..., 2n Informs you of the Live status. At the same time, if the heartbeat signal is not input for a certain period of time by checking the heartbeats in the alert server 11, 12, ..., 1n, that is, an error is recognized in the communication through the heartbeat. If so, the UDP communication is switched from the main port (Port) to the reserve port or from the reserve port to the main port (S362) (S364). On the other hand, if the flag of Master_Beat is 0, it returns to the infinite loop and returns to the step (S308) of receiving data from the alert servers 11, 12, ..., 1n by using UDP communication (S362).

FIG. 4 is a flowchart illustrating an embodiment of control of a redundant UDP communication line among the control methods of the extended alarm system (EAS) of FIG. 3.

While the main CPU 102 performs the corresponding control routine according to the scan_tick variable, it checks the heartbeats of the alarm servers 11, 12, ..., 1n to prevent the heartbeat signal from being input for a certain period of time. In this case, the step (S364) of switching UDP communication from the main port to the reserve port or from the reserve port to the main port will be described with reference to FIGS. 3 and 4 as follows.

First, the heartbeats of the extended alarm system (EAS) 21, 22, ..., 2n are up-loaded every second from the alarm server 11, 12, ..., 1n as the upper system (S402). ).

On the basis of the information of the uploaded heartbeat, the new time (time_new) to be sent every second by the alarm server (11, 12, ..., 1n) and the time before uploading (time_old) are compared and two times are compared. It is determined whether or not the same (S404).

As a result of the determination, if the two times are the same, the set time, i.e., increase 1 to the time value (HBt_cnt) for the check of 5 seconds, and if the 1 increased time is greater than 5, that is, if the time value has not changed for 5 seconds It is determined that new time information has not been transmitted for 5 seconds from the alarm servers 11, 12, ..., 1n which are the systems (S406).

Even if the increase value HBt_alarm for this set time repetition is increased twice, that is, if time information is not transmitted from the alarm servers 11, 12, ..., 1n for 10 seconds, it is regarded as a communication error and a communication error ( Comm Error) signal is generated (S408) (S410).

Then, if time information is not transmitted from the alarm server 11, 12, ..., 1n, the communication port of the UDP communication is changed from the main port to the reserve port or the reserve port to the main port every 5 seconds. In step S412, the time value HBt_cnt for checking is initialized and the routine Routine ends (S414).

On the other hand, as a result of the determination in step S404, if the two times are not the same, it is determined that time information is transmitted from the alarm servers 11, 12, ..., 1n every 1 second, and a new time (time_new) at the previous time (old_old). Update (Updata) (S416).                     

Next, a time value (HBt_cnt) for checking the set time and an increment value (HBt_alarm) for repeating the set time are initialized (S418) (S420).

If the current state is a communication error state, the error state is released and the routine ends (S422).

5 is a flowchart illustrating a process of changing a communication port of UDP communication during a control process of the redundant UDP communication line of FIG. 4.

If an error is detected on the communication through the heartbeat, the process of changing the communication port of the UDP communication from the main port to the reserve port or the reserve port to the main port (S412) is described with reference to FIGS. 4 and 5. The description is as follows.

First, when a routine for changing the communication port of the UDP communication is started, communication with the current alert servers 11, 12, ..., 1n and other EASs 21, 22, ..., 2n is performed. The number of the communication port is switched (S502). That is, if the current communication port is 0, it is changed to 1, and if it is 1, it is changed to 0 to switch from main to reserve or from reserve to main.

Next, if the number of the switched communication port is 0 (S504), the IP address is set to 'Main', and the Mac address is also set to 'Main' (S506) (S508).

On the other hand, if the number of the switched communication port is 1 (S504), the IP address is set to 'Reserve', and the Mac address is also set to 'Reserve' (S510) (S512).

The routine is terminated by changing the IP address to the set values, initializing the socket, and then opening the corresponding UDP communication line (S514) (S516) (S518).                     

Therefore, the embedded extended alarm system and control method for ship monitoring control according to the present invention is the expansion alarm system (EAS) 21, 22, ..., 2n integrated on one board other than the ECR (Engine Control Room) of the ship By installing at one or more places, the watcher and related crew can quickly recognize and respond to the alarm when an alarm occurs.

In addition, by duplexing the UDP communication lines 41 and 42 and controlling the duplicated communication lines 41 and 42 with one CPU, the communication line can be quickly disconnected when an error occurs in the main UDP communication line 41. The data can be transferred and transmitted and received via the reserved UDP communication line 42.

What has been described above is an embedded extended alarm system and control method for ship monitoring and control according to the present invention is just one embodiment, and anyone who has ordinary knowledge in the field to which the present invention belongs to the range that can be variously changed It will be said that there is a technical spirit of the present invention.

As described above, the ship monitoring control embedded extended alarm system and its control method according to the present invention has the following effects.

First, the integrated alarm system (EAS) installed on one board is installed in the wheelhouse, engineer room and public room in addition to the ship's ECR, so that the watcher and related crews can quickly recognize and respond to the alarm when an alarm occurs. It works.                     

Second, there is an advantage that the reliability of the communication line can be improved in the ship supervisory control system by dualizing the UDP communication line and controlling the duplicated UDP communication line with one CPU.

Claims (6)

A main CPU for controlling duplicated User Datagram Protocol (UDP) communication; A dual in-line package (DIP) switch connected to the main CPU to determine a unique ID of each extended alarm system (EAS); An SRAM for storing various variables and handling a buffer in communication; Flash ROM for storing the main program code (Flash); A display display device displaying various types of information of an extended alarm system (EAS); A data bus for transmitting various data on the board; A main and reserve Ethernet controller for communication of the physical layer; A pulse trans for transmitting or receiving communication signals of the main and reserve Ethernet controllers to a LAN communication network; And And a connector for connecting a communication line between the board and an external LAN communication network. The method according to claim 1, wherein the extended alarm system, Embedded extended alarm system for ship monitoring and control, which is installed in one or more places other than ECR (Engine Control Room) of ship, so that the alarm can be recognized quickly even if there is no worker in ECR. The method according to claim 1, wherein the main CPU, An embedded extended alarm system for ship supervisory control, characterized by assigning two Mac addresses and IP addresses, respectively, using TCP / IP sockets. Performing initialization for each component; When the initialization is completed, downloading and displaying a component for the corresponding extended alarm system (EAS) from the alarm server (Down-Load); Receiving data using UDP communication from an alarm server, which is an upper system, and another extended alarm system (EAS); Executing a timer for determining a period for each process to be performed in the main CPU when the data reception is completed; Generating a Scan_Tick of data received from the alert server and another Extended Alarm System (EAS) during a period in which the timer is running; And And executing a corresponding control routine according to the generated scan_tick variable. The method of claim 4, wherein the performing of the control routine according to the generated scan_tick variable, Receiving a key signal from a front panel of an extended alarm system (EAS) when the variable of scan_tick is 0 and a flag of master_key is 1; Performing flow control in UDP communication with an alarm server and another extended alarm system (EAS) when the scan_tick variable is 1 and the flag of Master_Retry is 1; If the scan_tick variable is 2 and the flag of Master_Time is 1, receiving and displaying time information every second from the alarm server; Displaying an execution state of the display display device in a box window of the display display device when the scan_tick variable is 3 and a flag of Master_Box is 1; Displaying an alarm state of each alarm group received by the component when the scan_tick variable is 4 and the flag of Master_Group is 1; If the scan_tick variable is 5 and the flag of Master_Alarm is 1, displaying time and point information of the last generated alarm; Displaying a state of a currently set duty when the variable of scan_tick is 6 and a flag of Master_Duty is 1; If the parameter of the scan_tick is 7 and the flag of Master_Mode is 1, displaying whether the current mode is in an ECR mode or a wheelhouse mode; And If the scan_tick variable is 8 and the flag of Master_Beat is 1, it informs the live status of the Extended Alarm System (EAS) and at the same time checks the heartbeat in the alarm server to check the heartbeat signal for a certain period of time. If is not input, the control method of the embedded extended alarm system for ship monitoring control comprising the step of switching UDP communication from the main port (Port) to the reserve port or the reserve port to the main port. The method of claim 5, wherein the step of switching the UDP communication port when the heartbeat signal is not input for a predetermined period by checking the heartbeat in the alert server, Up-loading the heartbeat of the extended alarm system (EAS) every second from the alarm server as the upper system; Determining whether two times are equal by comparing a new time (time_new) sent by an alarm server every second and a time before being uploaded (time_old) based on the information of the uploaded heartbeat; If the two times are equal, determining that the increased time value is greater than the set time after increasing 1 to a time value HBt_cnt for checking set time; Determining whether the increase value HBt_alarm for the repetition of the setting time is increased when the increase time value is equal to the setting time; As a result of the determination, when the increase value for the repetition of the setting time increases a setting number, generating a communication error signal by considering it as a communication error; And If the increased time value is the same as the set time is determined that the heartbeat information is not transmitted from the alert server during the set time, changing the communication port of the UDP communication for each set time (Change) Control method of embedded extended alarm system for ship supervisory control.

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