JP2015137054A - Railway security system and method for identification of small-sized control terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically identify inherent identification information concerning a connected small-sized control terminal.SOLUTION: In a railway security system, plural small-sized control terminals of a dual system for controlling various equipment and a maintenance terminal for maintaining the small-sized control terminals based on a user's operation are connected to each other via a network, and MAC address having a predetermined regularity including 1 system and 2 system is set in each of the plural small-sized control terminals. The plural small-sized control terminals are configured from the small-sized control terminal which communicates with the maintenance terminal by both of 1 system and 2 system, the small-sized control terminal which communicates with the maintenance terminal by only 1 system, and the small-sized control terminal which communicates with the maintenance terminal by only 2 system. The maintenance terminal specifies the small-sized control terminal among the plural small-sized control terminals on the basis of MAC address transmitted respectively by the plural small-sized control terminals and communication state information concerning 1 system and 2 system of the small-sized control terminals.

Description

  The present invention relates to a railway security system and a small control terminal identification method in the railway security system.

  In Patent Document 1, in a railway security system, when a small control terminal is composed of a plurality of systems such as a double system or a triple system, each small control terminal is maintained by connecting to the plurality of small control terminals. It is disclosed that a maintenance terminal transmits one control information via a separate communication control device for each system of small control terminals.

  Conventionally, as a method for identifying the plurality of small control terminals connected to the maintenance terminal, the maintenance terminal described above has unique identification information set in advance for each small control terminal, and is transmitted from the small control terminal. Each small control terminal is identified based on unique identification information.

JP 2008-265510 A

  However, in the above identification method, the maintenance terminal must hold in advance the unique identification information set for each small control terminal, and automatically identify the identification information unique to the connected small control terminal. There was a problem that I could not.

  The present invention has been made in consideration of the above points, and intends to propose a railroad security system and a small control terminal identification method capable of automatically identifying unique identification information of a connected small control terminal. It is.

  In order to solve such a problem, in the present invention, a duplex small control terminal that controls a plurality of various equipment and a maintenance terminal that maintains the small control terminal based on a user operation are connected via a network. In the connected railway security system, each of the plurality of small control terminals is set with MAC addresses having a predetermined regularity in the first and second systems, and the plurality of small control terminals are The small control terminal that communicates with the maintenance terminal in both the first and second systems, the small control terminal that communicates with the maintenance terminal only in the first system, and the small communication terminal that communicates with the maintenance terminal only in the second system. Control terminal, the maintenance terminal, based on the MAC address respectively transmitted from the plurality of small control terminals and the communication status information of the 1st system and 2nd system of the small control terminal, a plurality of the above-mentioned small Control terminal and identifies one of the small control terminal of plural said small control terminal, railway security system is provided.

  According to such a configuration, the maintenance terminal receives the MAC address and the IP address transmitted from each of the plurality of small control terminals, and the communication status of the first system and the second system of the received MAC address and the small control terminal. Based on the information, the plurality of small control terminals are identified as one of the plurality of small control terminals, and the MAC address of the identified small control terminal and the transmitted IP address are determined. By linking, the IP address of the specified small control terminal is identified. As a result, the IP addresses of a plurality of connected small control terminals can be identified without having an IP address set in advance in the small control terminal.

  According to the present invention, it is possible to automatically identify the unique identification information of a plurality of connected small control terminals without having the unique identification information set in the small control terminal in advance, and It can be maintained efficiently.

It is a block diagram which shows the structure of the railway security system which concerns on the 1st Embodiment of this invention. It is a block diagram which shows the structure of the maintenance terminal concerning the embodiment. It is a flowchart which shows the small control terminal identification process concerning the embodiment. It is a flowchart which shows the detail of the small control terminal specific process concerning the embodiment. It is a chart which shows the specific example of the address concerning the embodiment.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

(1) Configuration of Railway Security System Hereinafter, the present invention will be described by applying it to a railway security system. The railway security system has a multi-system configuration such as a double system or a triple system in order to improve the operation rate. In the present embodiment, a dual railway security system will be described as an example.

  In the dual railway security system according to the present embodiment, the maintenance terminal transmits one control information via a separate communication control device for each system of the small control terminal. At this time, since the same control information is transmitted to each system of the small control terminal by providing a communication protocol for detecting the communication delay, the small control terminal outputs the control information to the output of the signal equipment independently in each system. Convert and output the logical sum of each system output to the signal equipment. By adopting this method, even if one system of the small control terminal breaks down and the output to the signal equipment is stopped, the control of the signal equipment can be continued by the output from the other system.

  As shown in FIG. 1, the railroad security system according to the present embodiment includes a maintenance terminal 11, a small control terminal A12, a small control terminal B13, and a small control terminal C14.

  The maintenance terminal 11 is connected to the small control terminal A12, the small control terminal B13, and the small control terminal C14 via various switches (L2SW, L3SW, etc.).

  As described above, the railroad security system according to the present embodiment is a dual system, and the small control terminal A12, the small control terminal B13, and the small control terminal C14 are configured by the 1st system and 2nd system small control terminals, respectively. ing. Each small control terminal is connected to the maintenance terminal 11 via a communication line. In FIG. 1, in order to clarify which terminal is connected to the maintenance terminal 11 via various switches, the communication line 15 that performs communication is a solid line, and the communication line 16 that does not perform communication is a dotted line.

  The maintenance terminal 11 is a computer device for maintaining or managing the small control terminal A12, the small control terminal B13, and the small control terminal C14, and includes, for example, a personal computer and a workstation.

  As shown in FIG. 2, the maintenance terminal 11 mainly includes a control unit 110, a storage unit 120, a communication unit 130, and the like.

  The control unit 110 functions as an arithmetic processing unit and a control unit, and controls the overall operation in the maintenance terminal 11 according to various programs. The control unit 110 may be a microprocessor.

  The storage unit 120 includes storage devices such as a ROM (Read Only Memory), a RAM (Random Access Memory), and a storage device (HDD).

  The ROM stores programs, calculation parameters, and the like used by the CPU 101, and the RAM temporarily stores programs used in the execution of the control unit 110, parameters that change as appropriate in the execution, and the like.

  The storage device is a device for storing data. From a storage medium, a recording device that records data on the storage medium, a reading device that reads data from the storage medium, a deletion device that deletes data recorded on the storage medium, and the like. Composed.

  The control unit 110 functions as the terminal specifying unit 111 based on the program stored in the ROM. Specifically, the terminal identifying unit 111 identifies a plurality of small control terminals connected to the maintenance terminal 11 based on the MAC address, and unique identification information (IP address) between the small control terminal and each small control terminal Are linked and managed.

  The communication unit 130 is a communication interface configured with a communication device or the like. The communication unit 130 may be a wireless LAN (Local Area Network) compatible communication device, a wireless USB compatible communication device, or a wire communication device that performs wired communication. The communication unit 130 transmits and receives various data such as setting information and identification information of each small control terminal to and from a plurality of small control terminals.

  The maintenance terminal 11 includes an information input device such as a keyboard, a switch, a pointing device, and a microphone, and an information output device such as a monitor display and a speaker. Maintenance such as setting and configuration change of the control terminal A12, the small control terminal B13, and the small control terminal C14 can be performed.

  Similar to the maintenance terminal 11, the small control terminal A12, the small control terminal B13, and the small control terminal C14 also have information processing resources such as a CPU and a memory. The CPU functions as an arithmetic processing unit and controls the operation of the small control terminal A12, the small control terminal B13, or the small control terminal C14 in accordance with a program, calculation parameters, and the like stored in the memory.

  The small control terminal A12 is a dual system device that controls the equipment connected to the small control terminal A12.

  The small control terminal B13 is a dual system device that controls the equipment connected to the small control terminal B13.

  The small control terminal C14 is a dual system device that controls the equipment connected to the small control terminal C14.

  As shown in FIG. 1, each of the small control terminal A12, the small control terminal B13, and the small control terminal C14 is composed of 1-system and 2-system small control terminals. The small control terminal A12 communicates with the maintenance terminal 11 in both the first and second systems. The small control terminal B13 communicates with the maintenance terminal 11 only in the first system. The small control terminal C14 communicates with the maintenance terminal 11 only in the second system.

  Further, as the MCA addresses of the small control terminal A12, the small control terminal B13, and the small control terminal C14, MAC addresses having predetermined regularity are set for the 1st system and the 2nd system.

  For example, in the present embodiment, the last digit of each of the 2 system MAC addresses is set to a value that is one greater than the last digit of the 1 system MAC address. Further, the MAC addresses of the small control terminal A12, the small control terminal B13, and the small control terminal C14 are set such that the final digit of the 1-system MAC address is odd and the final digit of the 2-system MAC address is even. Specifically, in the following description, the last digit of the first system MAC address of the MCA addresses of the small control terminal A12, the small control terminal B13, and the small control terminal C14 is “1”, and the last digit of the second system MAC address is “2”. It is said.

  As a result, the maintenance terminal 11 determines which one of the small control terminals is the small control terminal A12, the small control terminal B13, or the small control terminal C14, based on the combination of the communication status information of the first and second systems and the MAC address. Either of these can be specified. A method for identifying the small control terminal connected to the maintenance terminal 11 will be described in detail later.

  The maintenance terminal 11 identifies each small control terminal as one of the small control terminal A12, the small control terminal B13, or the small control terminal C14, and the unique identification information (IP address) transmitted from each small control terminal and each small control terminal. ). Thereby, the maintenance terminal 11 can identify the IP addresses of the small control terminal A12, the small control terminal B13, and the small control terminal C14.

(2) Details of Small Control Terminal Identification Process in Railway Security System Next, the small control terminal identification process in the maintenance terminal 11 will be described with reference to FIGS. 3 and 4. Hereinafter, a case will be described in which three double system small control terminals (small control terminal A12, small control terminal B13, or small control terminal C14) are connected to the maintenance terminal 11.

  As shown in FIG. 3, the communication unit 130 of the maintenance terminal 11 communicates with a connected small control terminal (small control terminal A12, small control terminal B13, or small control terminal C14) (S110).

  And the communication part 130 of the maintenance terminal 11 acquires the address of each small control terminal (S120). The addresses acquired in step S120 are the MAC address and IP address of each small control terminal. The communication unit 130 provides the terminal identification unit 111 with the address of each small control terminal acquired in step S120.

  The MAC address is identification information set in each small control terminal, and is set in each terminal of the first and second systems of each terminal. The IP address is information for transmitting control information from the maintenance terminal 11 to the dual system small control terminal, and one IP address is set for each small control terminal.

  As described above, there are a total of four small control terminals connected to the maintenance terminal 11, that is, the first and second systems of the small control terminal A12, the first system of the small control terminal B13, and the second system of the small control terminal C14. is there. Therefore, in step S120, the maintenance terminal 11 receives the MAC addresses and IP addresses of the four small control terminals.

  Then, the maintenance terminal 11 executes a small control terminal specifying process based on the address of the small control terminal acquired in step S120 (S130).

  Next, details of the small control terminal specifying process in step S130 will be described with reference to FIG. As described above, the terminal specifying unit 111 of the maintenance terminal 11 acquires four MAC addresses from the small control terminal A12, the small control terminal B13, and the small control terminal C14 in step S120.

  And the terminal specific | specification part 111 is the combination of one of the last digits among the four MAC addresses acquired in step S130 is odd and the other is even, and the number of even digits minus the number of odd digits = 1. Determination is made (S131).

  In step S131, when a positive determination is made, that is, when it is determined that one of the last digits of the MAC address is an odd number and the other is an even number, and the number of even digits minus the number of odd digits = 1, The small control terminal that has transmitted the MAC address is identified as the small control terminal A12 (S132).

  On the other hand, in step S131, a negative determination is made, that is, it is determined that one of the last digits of the MAC address is an odd number and the other is an even number, and the number of even digits minus the number of odd digits = 1 is not a combination. In this case, it is determined whether the last two of the remaining two MAC addresses are odd digits (S133).

  In step S133, if the determination is affirmative, that is, if the last two of the remaining MAC addresses are determined to be odd digits, the small control terminal that has transmitted the MAC address is identified as the small control terminal B13. (S134).

  On the other hand, in step S133, if the negative determination is made, that is, it is determined that the last digit of the remaining two MAC addresses is not an odd digit, the small control terminal that has transmitted the MAC address of the even digit is subjected to the small control. The terminal C14 is identified (S135).

  A specific example of the MAC address and the IP address transmitted to the maintenance terminal 11 will be described with reference to FIG.

  As shown in FIG. 5, the MAC address of the first system of the small control terminal A is “00: 07: 40: 11”, and the MAC address of the second system of the small control terminal A is “00: 07: 40: 12”. Suppose that Further, it is assumed that the MAC address of the first system of the small control terminal B is “00: 07: 40: 21” and the MAC address of the second system of the small control terminal C is “00: 07: 40: 32”.

  When these four MAC addresses are transmitted to the maintenance terminal 11, it is determined in the above-described step S131 that one of the last digits of the MAC address is odd and the other is even and the number of even digits minus the number of odd digits. = 1 is a combination of “00: 07: 40: 11” and “00: 07: 40: 12”.

  As described above, since it is the small control terminal A12 that communicates in both the first and second systems, the combination of “00: 07: 40: 11” and “00: 07: 40: 12” It can be seen that the small control terminal set with the MAC address is the small control terminal A12. Further, as described above, the last digit of the 2nd system MAC address is set to a value one larger than the last digit of the 1st system MAC address.

  Therefore, it can be seen that “00: 07: 40: 11” is the first system of the small control terminal A12 and “00: 07: 40: 12” is the second system of the small control terminal A12. Therefore, it can be seen that the IP address of the small control terminal A12 is the IP address “192.168.0.10” transmitted from the small control terminal.

  Also, in the determination of step S133, the MAC address whose last digit is an odd digit among the remaining two MAC addresses is “00: 07: 40: 21”.

  As described above, the small control terminal B13 communicates only in the 1st system. Since the last digit of the 1st system MAC address is an odd number, it can be seen that the small control terminal set with the MAC address of “00: 07: 40: 21” is the small control terminal B13. Therefore, it can be seen that the IP address of the small control terminal B13 is the IP address “192.168.0.20” transmitted from the small control terminal.

  Of the remaining two MAC addresses, the MAC address whose final digit is an even digit is “00: 07: 40: 32”.

  As described above, the small control terminal C14 communicates only in the second system. Since the last digit of the second system MAC address is an even number, it can be seen that the small control terminal set with the MAC address of “00: 07: 40: 32” is the small control terminal C14. Therefore, it can be seen that the IP address of the small control terminal C14 is the IP address “192.168.0.30” transmitted from the small control terminal.

  Through the small control terminal specifying process, the maintenance terminal 11 identifies each small control terminal as the small control terminal A12, the small control terminal B13, or the small control terminal C14 for the connected small control terminals, and the IP of each small control terminal is specified. It becomes possible to identify the address.

  In the above embodiment, the case where three small control terminals are connected to the maintenance terminal 11 has been described as an example, but the present invention is not limited to this example. For example, when two small control terminals are connected, one small control terminal communicates with only one system, and the other small control terminals communicate with only two systems, Two small control terminals can be identified and the MAC address and the IP address can be associated with each other.

  When four or more small control terminals are connected to the maintenance terminal 11, the difference between the MAC addresses of the 1st system and the 2nd system is set to 2 or more, and which small control terminal is specified based on this difference. You may make it do.

  For example, when four small control terminals are connected, for the three MAC addresses, as described above, the last digit of each two-system MAC address is changed from the last digit of the one-system MAC address. It may be set to a value that is 1 larger, and for the fourth MAC address, the last digit of the 2nd system MAC address may be set to a value that is 3 larger than the last digit of the 1st system MAC address.

Further, the small control terminal A12, the small control terminal B13, and the small control terminal C14 of the present embodiment have been described with respect to the dual system including the first system and the second system, but the present invention is not limited to this example. Even if it is more than a heavy system, this invention is applicable. If the number of systems to which the microcontroller terminal is equipped with N, if there is no transmission from all of the system, can not recognize the small control terminal, excluding the case where the "2 ^N -1" number of small The control terminal can be identified. In that case, you may allocate by the remainder when the last digit of a MAC address is divided by N.

11 Maintenance terminal 110 Control unit 111 Terminal identification unit 120 Storage unit 130 Communication unit 12 Small control terminal A
13 Small control terminal B
14 Small control terminal C

Claims (7)

A railway security system in which a double-type small control terminal that controls a plurality of various equipment and a maintenance terminal that maintains the small control terminal based on a user operation are connected via a network,
Each of the plurality of small control terminals is set with a MAC address having a predetermined regularity in the first and second systems,
The plurality of small control terminals are:
The small control terminal communicating with the maintenance terminal in both the first and second systems;
The small control terminal that communicates with the maintenance terminal only in the first system;
The small control terminal that communicates with the maintenance terminal only in the second system, and
The maintenance terminal is
Based on the MAC address transmitted from each of the plurality of small control terminals and the communication status information of the first and second systems of the small control terminals, the plurality of small control terminals are among the plurality of small control terminals. A railway security system characterized by identifying which small control terminal. The maintenance terminal is
An IP address of the specified small control terminal is identified by identifying which of the plurality of small control terminals is a small control terminal and associating the MAC address and IP address transmitted from the specified small control terminal. The railway security system according to claim 1, wherein the railway security system is identified. The maintenance terminal is connected to the three small control terminals,
The first small control terminal communicates with the maintenance terminal in both system 1 and system 2,
The second small control terminal communicates with the maintenance terminal only in the first system,
The third small control terminal communicates with the maintenance terminal only in the second system,
In each of the plurality of small control terminals, the last digit of each of the 2 system MAC addresses is set to a value one larger than the last digit of the 1 system MAC address, and the last digit of the MAC address of the 1 system small control terminal is set. Is set to an odd number, the last digit of the MAC address of the small control terminal of system 2 is set to an even number,
The maintenance terminal is
Based on the MAC address of the connected small control terminal and the communication status information of the first and second systems of each small control terminal, it is determined which of the three small control terminals is the small control terminal. The railway security system according to claim 2, wherein the railway security system is specified. The maintenance terminal is
Of the MAC addresses of the connected small control terminals, the number of final digits is an odd number and an even number, and the value obtained by subtracting the odd number of final digits from the even number of final digits of the MAC address is 1. The railway security system according to claim 3, wherein the small control terminal that has transmitted a MAC address is identified as the first small control terminal. The maintenance terminal is
Other than the combination of the MAC addresses of the small control terminals connected to which the final digits are odd and even, and the value obtained by subtracting the odd final digits from the even final digits of the MAC address is 1. 5. The railway security system according to claim 4, wherein the small control terminal that has transmitted a MAC address having an odd final number of digits is identified as the second small control terminal. The maintenance terminal is
Of the MAC addresses of the three small control terminals connected, the final digits are odd and even, and the value obtained by subtracting the odd final digits from the even final digits of the MAC address is 1. The railway security system according to claim 5, wherein the small control terminal that has transmitted a MAC address that is a MAC address other than a combination and has an even number of final digits is identified as the third small control terminal. . A small control terminal identification method in a railroad security system in which a double system small control terminal for controlling a plurality of various equipment and a maintenance terminal for maintaining the small control terminal based on a user operation are connected via a network Because
Each of the plurality of small control terminals is set with a MAC address having a predetermined regularity in the first and second systems,
The plurality of small control terminals are:
The small control terminal communicating with the maintenance terminal in both the first and second systems;
The small control terminal that communicates with the maintenance terminal only in the first system;
The small control terminal that communicates with the maintenance terminal only in the second system, and
The maintenance terminal is
Receiving a MAC address and an IP address respectively transmitted from a plurality of the small control terminals;
Based on the received MAC address and communication status information of the 1st system and 2nd system of the small control terminal, a plurality of the small control terminals are identified as one of the plurality of small control terminals. Steps,
A step of identifying the IP address of the specified small control terminal by associating the MAC address of the specified small control terminal with the transmitted IP address. .

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