JP7495907B2 - Telegram conversion system and telegram conversion method - Google Patents

Description

The present invention relates to a message conversion system and a message conversion method, and is suitable for use in a message conversion system and a message conversion method that convert messages acquired from an online system and transmit them to a test system in order to perform tests such as software evaluation in a test system that has an environment equivalent to an online system.

Online systems such as train traffic control systems are systems that operate continuously, and once they are up and running, one of the characteristics is that maintenance and system updates cannot be easily carried out. For example, in the case of a train traffic control system, when carrying out maintenance or system updates while the system is operating online, the system must be stopped, tested, updated, started up, and its health checked during a period of approximately one to two hours, known as the train gap, when there are no trains running.

When attempting to update an online system, it is common to use a test system that is independent of the online system and a simulator that simulates on-site equipment to perform software evaluation before introducing the software into the online system. However, with the above method, it is impossible for the simulator to completely simulate the system conditions of the on-site equipment in the online system, making it difficult to perform highly accurate software evaluation using the simulator.

Here, a method of software evaluation that is not affected by the accuracy of a simulator is the parallel monitor run test method. In the parallel monitor run test method, communication data from the field equipment in the online system is acquired by the test system, and software evaluation is performed by the test system. A device that acquires communication data directly via a local area network, such as a network analyzer, is used to import communication data from the online system to the test system. With this parallel monitor run test method, software evaluation tests can be performed all day long without being restricted by the time between trains. In addition, since the test system can directly acquire communication data from the online system's field equipment, it is possible to reproduce control timing, etc. that cannot be reproduced by a simulator, and highly accurate software evaluation tests can be performed under system conditions equivalent to those of the online system.

For example, Patent Document 1 discloses a test method in which a data transfer device arranged between a train traffic control system and a test system transmits communication data from the train traffic control system in only one direction to a test system that contains software that performs system updates, blocks communication data from the test system to the train traffic control system, and the test system performs software evaluation tests based on the communication data from the train traffic control system. The test method disclosed in Patent Document 1 is expected to reproduce the communication of the online system in the test system without affecting the online system, and to perform highly accurate evaluation of the software that updates the system.

Patent No. 4944430

When simulating the operating status of the above-mentioned online train traffic control system using a test system, the display information from the on-site equipment and the traffic rescheduling information entered by the dispatcher are important elements, and in Patent Document 1 and other conventional technologies, the communication data of the above information flowing through the online system can be acquired as a telegram and sent to the test system.

However, communication data such as traffic reorganization information contains multiple pieces of change information, which are classified into multiple types, with each type having a different data format. In addition, traffic reorganization information does not transmit fixed information as communication data, and the breakdown of change information contained in the traffic reorganization information varies depending on the content entered by the dispatcher. Furthermore, the data format in the test system may differ from the data format in the online system. In such cases, with the conventional technology described above, it was necessary to make modifications to the online system, such as changing the communication definition.

However, modifying an online system to evaluate software when updating the system involves a high risk. In addition, when multiple pieces of change information are included in one piece of communication data (message), such as train rescheduling information, and the data format may differ depending on the type of change information, it is difficult to define in advance a format conversion for the entire message in the online system. In addition, in order to simulate the operating status of an online system with a test system, it is necessary to send communication data to the test system without changing the input timing of information in the online system, but the above-mentioned conventional technology does not adequately address this issue.

The present invention has been made in consideration of the above points, and aims to propose a message conversion system and a message conversion method that transmits communication data from an online system in a data format that can be used by a test system without affecting the operation of the online system, and enables testing to be performed in the test system that accurately simulates the environment of the online system.

In order to solve such problems, the present invention provides a telegram conversion system that connects between an online system that operates online and a test system that performs software evaluation testing by simulating the environment of the online system, the telegram conversion system comprising a first telegram conversion device that is connected to the online system via a first network, and a second telegram conversion device that is connected to the test system via a second network and to the first telegram conversion device via a third network, the first telegram conversion device not setting a receiving IP address from the online system, and setting a first IP address as a sending IP address to the second telegram conversion device. A telegram conversion system is provided that acquires communication data flowing within the online system via the first network and transmits it to the second telegram conversion device via the third network, and the second telegram conversion device sets a second IP address different from the first IP address as a receiving IP address from the first telegram conversion device and a sending IP address to the test system, converts the format of the communication data received from the first telegram conversion device via the third network into a format usable by the test system, and transmits the format-converted communication data to the test system via the second network.

In addition, in order to solve such problems, the present invention provides a method of telegram conversion using a telegram conversion system that connects between an online system that operates online and a test system that performs software evaluation testing by simulating the environment of the online system, the telegram conversion system having a first telegram conversion device that is connected to the online system via a first network, and a second telegram conversion device that is connected to the test system via a second network and is connected to the first telegram conversion device via a third network, in which a receiving IP address from the online system is not set in the first telegram conversion device, and a first IP address is set as a sending IP address to the second telegram conversion device. A method of electronic message conversion is provided in which a second IP address different from the first IP address is set in the second electronic message conversion device as the receiving IP address from the first electronic message conversion device and the sending IP address to the test system, the first electronic message conversion device acquires communication data flowing in the online system via the first network and transmits it to the second electronic message conversion device via the third network, the second electronic message conversion device converts the format of the communication data received from the first electronic message conversion device via the third network into a format usable by the test system, and transmits the format-converted communication data to the test system via the second network.

According to the present invention, communication data from an online system can be sent in a data format that can be used by a test system without affecting the operation of the online system, making it possible to conduct tests in the test system that accurately simulate the environment of the online system.

1 is a diagram showing an example of the overall configuration of a train traffic control system testing device including a message conversion system 3 according to an embodiment of the present invention; 2 is a diagram illustrating an example of the internal configuration of electronic message conversion devices 31 and 32. 13 is a flowchart showing an example of a processing procedure for a message conversion process performed by the message conversion system 3. FIG. 13 is a diagram showing an example of change information that requires format conversion. 13 is a diagram illustrating an example of format correspondence data 124 related to common part information. FIG. 13 is a diagram illustrating an example of format correspondence data 124 related to change information. FIG. FIG. 13 is a diagram illustrating another example of the format correspondence data 124 related to change information. 13A and 13B are diagrams illustrating examples of the configuration of timetable rescheduling information before and after format conversion.

Below, an embodiment of the present invention will be described in detail with reference to the drawings. In the following description, when describing similar elements without distinguishing between them, the common portion (part excluding the subscript and sub-number) of the reference sign including the subscript and sub-number will be used, and when describing similar elements with distinction, the reference sign including the subscript and sub-number may be used. For example, when describing a traffic replanning terminal without making a distinction between them, it will be written as "traffic replanning terminal 11", whereas when describing individual traffic replanning terminals 11 with distinction between them, it may be written as "traffic replanning terminal 11A", "traffic replanning terminal 11B", etc.

Figure 1 is a diagram showing an example of the overall configuration of a train traffic control system test device that includes a message conversion system 3 according to one embodiment of the present invention. As shown in Figure 1, in the train traffic control system test device, the message conversion system 3 connects between the traffic control system 1 and the test system 2 via a message conversion device 31 and a message conversion device 32.

The traffic control system 1 is an online system that manages train operations and is currently in operation. The traffic control system 1 is configured by connecting a traffic rescheduling terminal 11A used by the dispatcher to issue traffic rescheduling commands, a command management central unit 12A which is a train centralized control device, and field equipment (not shown) via a network (LAN 41). The communication data that flows through the network of the traffic control system 1 includes various types of communication data, such as display information from the field equipment and traffic rescheduling information from the traffic rescheduling terminal 11A.

The test system 2 is a test system that acts as a simulator simulating the traffic control system 1, and performs software evaluation tests such as system updates in an environment that reflects the information of the online system (traffic control system 1). The test system 2 basically has the same configuration as the traffic control system 1, except for the operating facilities. Specifically, the test system 2 is configured by connecting a traffic management terminal 11B, a command management central device 12B, etc., via a network (LAN 42).

The hardware and/or software of each component of the test system 2 are updated in accordance with the system update being tested. The test system 2 obtains format-converted communication data from the message conversion system 3 that is the communication data that flows through the traffic control system 1, and thereby can perform software evaluation tests of system updates, etc. in each component of the command management central device 12B and the traffic arrangement terminal 11B, etc., in an environment that reflects the information of the traffic control system 1, which is an online system.

The message conversion system 3 is a system that converts (message conversion) communication data flowing in the traffic control system 1 into a format that can be flowed in the test system 2, and transmits the converted communication data to the test system 2 without changing the timing of the communication data in the traffic control system 1. A detailed internal configuration will be described later with reference to FIG. 2, but the message conversion system 3 is configured by connecting, via LAN 43, a current-side message conversion device 31 connected to the traffic control system 1 via LAN 41 and a test-side message conversion device 32 connected to the test system 2 via LAN 42.

LANs 41, 42, and 43 are networks that transmit communication data (telegrams). In this embodiment, these networks are LANs (Local Area Networks), but are not limited to this and may be networks with different standards. LANs 41 and 42 are not directly connected, but are connected via a route via LAN 43. Note that FIG. 1 illustrates the flow of communication data with a thick solid line with an arrow. As can be seen from the flow of communication data shown in FIG. 1, the telegram conversion system 3 acquires communication data flowing in the traffic management system 1 and transmits it unidirectionally to the test system 2.

Figure 2 is a diagram showing an example of the internal configuration of the electronic message conversion devices 31 and 32. Figure 2 shows the electronic message conversion system 3 shown in Figure 1 in detail, and the LANs 41, 42, and 43 are omitted.

The electronic message conversion devices 31 and 32 are computers having a processor such as a CPU (Central Processing Unit), a memory such as a RAM (Random Access Memory), a storage device, and various interfaces (input/output I/F, communication I/F, etc.), and the processor executes programs stored in the memory, etc. to realize predetermined functions. Specifically, for example, the electronic message conversion devices 31 and 32 are realized as Linux machines using Linux (registered trademark) as the OS (Operating System).

Such message conversion devices 31 and 32 can unilaterally acquire communication data flowing through the LAN 41, for example, by using a "promiscuous mode" function that works in conjunction with IP (Internet Protocol) to realize a unilateral communication data acquisition function.

According to the IP addresses of the devices illustrated in FIG. 1, the message conversion device 31 does not define the receiving IP address of LAN 41, and is assigned "130.12.0.244" as the sending IP address of LAN 43. The message conversion device 32 is assigned "130.12.0.245" as the receiving IP address of LAN 43 and the sending IP address of LAN 42. According to this message conversion system 3, the message conversion devices 31 and 32 have separate IP addresses different from the traffic control system 1 and the test system 2, and by not defining the receiving IP address from the current message conversion device 31, communication data is prevented from being sent from the message conversion device 31 to the traffic control system 1, and communication data can be sent unilaterally from the message conversion device 31 to the message conversion device 32 and from the message conversion device 32 to the test system 2.

As shown in FIG. 2, the current telegram conversion device 31 includes a data receiving unit 111 and a data transmitting unit 112.

The data receiving unit 111 receives communication data from the traffic management system 1 via the LAN 41, and requests the data transmitting unit 112 to transmit the received communication data to the message conversion device 32. When the data receiving unit 111 receives one piece of communication data, it immediately requests the data transmitting unit 112 to transmit the communication data, without waiting for the next or subsequent reception of communication data.

When the data transmission unit 112 receives a transmission request from the data reception unit 111, it transmits the communication data to the telegram conversion device 32. In other words, each time the telegram conversion device 31 acquires a piece of communication data from the traffic management system 1, it transfers the communication data to the telegram conversion device 32, and does not convert the format.

The message conversion device 32 on the test system side includes a data receiving unit 121, a format conversion unit 122, a data transmitting unit 123, and format-compatible data 124.

The data receiving unit 121 receives communication data of the operation control system 1 transmitted from the data transmitting unit 112 of the message conversion device 31, and immediately passes the received communication data to the format conversion unit 122.

The format conversion unit 122 converts the format of the communication data received from the data receiving unit 121 for each data type of the communication data based on the format compatibility data 124, converts the communication data into communication data that can be used by the test system 2, and then requests the data transmitting unit 123 to transmit the communication data to the test system 2.

The format correspondence data 124 is information indicating the correspondence between the format of communication data usable in the online system (operation control system 1) and the format of communication data usable in the test system 2 for each data type of data included in the communication data, and is stored in advance in a specified storage device of the message conversion device 32. In detail, the format correspondence data 124 holds information indicating the format correspondence for each piece of common part information and change information that constitutes the communication data (message). A specific example of the correspondence of the format of the common part information is shown in FIG. 5, and a specific example of the correspondence of the format of the change information is shown in FIG. 6 and FIG. 7.

When the data transmission unit 123 receives a transmission request from the format conversion unit 122, it transmits the format-converted communication data to the test system 2 via the LAN 42. In addition, in the test system 2 that receives the communication data from the data transmission unit 123, the format-converted data may be displayed on a display device so that a user of the test system 2 can check whether there are any problems with the received data. At this time, a display may be provided so that the parts where the format has been converted by the electronic message conversion device 32 can be recognized.

Figure 3 is a flowchart showing an example of the processing procedure of the message conversion process by the message conversion system 3. The message conversion process shown in Figure 3 is a process executed for each piece of communication data (message), and is executed mainly by the message conversion device 32. Note that in this example, explanation will be given using train replanning information as an example of communication data that flows within the traffic management system 1. Train replanning information is communication data whose information structure differs depending on the contents of the input by the dispatcher at the train replanning terminal 11A.

According to FIG. 3, first, in the telegram conversion device 31, the data receiving unit 111 receives communication data from the traffic management system 1, and the data transmitting unit 112 transmits the data to the telegram conversion device 32, whereby the data receiving unit 121 of the telegram conversion device 32 receives the communication data flowing in the traffic management system 1 (step S101). All of the following processes are executed by the telegram conversion device 32.

Here, we explain the data structure of the communication data.

A single piece of communication data (message) is composed of a combination of common information and change information. Of these, the common information is information composed of common data items that are not dependent on the type of communication data, and is composed of overall information regarding the message. Specifically, for example, the common information includes the number of pieces of change information indicating the total number of pieces of change information included in the message, size information indicating the overall size of the message, and sender identification information that can identify the sender of the message (i.e., the traffic management system 1 or the traffic control terminal 11A).

On the other hand, change information is information whose combination changes depending on the type of communication data (message) from among multiple types of change information. Each type of change information can be classified by type code, and multiple pieces of change information with the same type code may be included in one piece of communication data. The format of each type of change information may be the same between the operation control system 1 and the test system 2, or it may be different (requiring format conversion).

Figure 4 is a diagram showing an example of change information that requires a format conversion. The list information 200 shown in Figure 4 is data that compiles change information that requires a format conversion, and is composed of a serial number (No.) 201, a change information name 202 that indicates the name of the change information, and a type code 203 that indicates the type code of the change information. According to Figure 4, for example, change information "change of departure order CHD" has a type code of "0x01", and change information "delete of departure order CHD" has a type code of "0x02". The list information 200 is stored in advance in a specified storage device of the electronic message conversion device 32.

Returning to the explanation of FIG. 3, after step S101, the format conversion unit 122 converts the format of the common part information for the communication data received by the data receiving unit 121 in step S101 based on the format compatibility data 124 (step S102). Note that since common part information is generally placed at the beginning (starting part) of a message, in the message conversion process of FIG. 3, the format conversion of the common part information (step S102) is performed before the format conversion of the change information (steps S103 to S106), but the order of execution of the processes may be changed depending on the data arrangement in the communication data.

In this embodiment, the conversion of the format specifically corresponds to at least one of the following: a change in data size (capacity), a change in a data item (including deletion), an addition of a data item, or a change in the number of times data is written. When a data item is added or changed, a predetermined initial value is set for that data item.

Figure 5 is a diagram illustrating an example of format correspondence data 124 for common part information. The format conversion image 210 shown in Figure 5 represents the correspondence between a format 211 of common part information that can be used in the operation control system 1 and a format 212 of common part information that can be used in the test system 2.

Looking specifically at the correspondence shown in the format conversion image 210, for example, record "No. 1" in format 211 indicates that in the communication data of the operation management system 1, the "total number of data bytes" data using a capacity of "4 bytes" is written "once" per message in the common part information. On the other hand, record "No. 1" in format 221 indicates that the "total number of data bytes" data using a capacity of "4 bytes" is written "once" per message. Therefore, the data of "No. 1" does not require format conversion in step S102 of FIG. 3.

Furthermore, according to record "No. 11" of format 211, it is indicated that in the communication data of the traffic management system 1, "spare" data using a capacity of "1 byte" is written "once" per message in the common part information. On the other hand, according to record "No. 11" of format 221, it is indicated that "sender system category" data using a capacity of "1 byte" is written "once" per message. Therefore, in this case, the data "No. 11" of the common part information of the communication data in the traffic management system 1 needs to be converted from the "spare" format to the "sender system category" format in step S102 of FIG. 3.

However, in the case of the format conversion image 210 shown in FIG. 5, the total capacity of format 211 and format 212 is the same at 48 bytes, so even if the format of the common part information is converted, the overall size does not increase or decrease.

Returning to the explanation of FIG. 3, after step S102, the format conversion unit 122 starts a loop process for converting the format of the change information based on the format compatibility data 124 for the communication data received by the data receiving unit 121 in step S101 (step S103). In this loop process, the change information included in the communication data is selected in order and the processes of steps S104 to S106 are executed, so that overall, the process is repeated the number of times equal to the number of change information. The number of change information items included in the communication data (number of change information items) can be obtained from the common part information.

In the loop process, the format conversion unit 122 first determines whether the change information selected in step S103 is information that requires a format conversion based on the list information 200 shown in FIG. 4 (step S104). As described above in the explanation of FIG. 4, the change information name 202 in the list information 200 lists the change information that requires a format conversion. If the change information is information that requires a format change (YES in step S104), the process proceeds to step S105, and if the change information is information that does not require a format conversion (NO in step S104), the process proceeds to the next loop process. By the format conversion unit 122 determining whether a format conversion is required in step S104, it is expected that the overall processing time and processing load will be reduced.

In step S105, the format conversion unit 122 determines the data type of the selected change information based on the list information 200 shown in FIG. 4. Specifically, the format conversion unit 122 can determine the data type of the change information by referring to the type code 203 of the list information 200.

Next, the format conversion unit 122 converts the format of the change information selected in step S103 based on the format compatibility data 124 corresponding to the data type (type code 203) determined in step S105 (step S106).

Figure 6 is a diagram illustrating an example of format correspondence data 124 related to change information. The format conversion image 220 shown in Figure 6 represents the correspondence between a format 221 usable in the operation control system 1 and a format 222 usable in the test system 2 for change information "Departure order change CHD" classified by type code "0x01". The notation structure of each format 221, 222 is similar to the formats 211, 212 shown in Figure 5.

Check the specific correspondence shown in format conversion image 220. The item names, capacity, and number of times for data "No. 1" to "No. 13" and "No. 15" to "No. 17" in format 221 are all the same in format 222. Therefore, this data does not require format conversion in step S106 in FIG. 3.

On the other hand, the data of "No. 14 (spare 2)" in format 221 is divided into four parts in format 222: "No. 14-A (issue trigger)," "No. 14-B (changed train sequence position)," "No. 14-C (pre-change track name)," and "No. 14 (spare 2)." Therefore, format conversion is required in step S106 in FIG. 3.

In addition, according to format conversion image 220, data "No. 18" to "No. 21" in format 222 does not exist in format 221, so a conversion to expand the format is required in step S106 in FIG. 3.

When the format is converted according to the above format conversion image 220, "No. 18" to "No. 21" of format 222 are added, and the total capacity increases by 22 bytes from 60 bytes to 88 bytes.

Figure 7 is a diagram illustrating another example of format correspondence data 124 related to change information. The format conversion image 230 shown in Figure 7 shows the correspondence relationship between a format 231 usable in the operation control system 1 and a format 232 usable in the test system 2 for change information "Departure order deletion CHD" classified by type code "0x02". The notation structure of each format 231, 232 is similar to the formats 211, 212 shown in Figure 5 and the formats 221, 222 shown in Figure 6.

When checking the correspondence shown in the format conversion image 230, the data "No. 1" to "No. 10", "No. 12" and "No. 13" are in the same format in format 231 and format 232, so format conversion is not necessary in step S106 of FIG. 3.

On the other hand, the data "No. 11 (spare 3)" in format 231 is split into four pieces of data in format 232, so format conversion is required in step S106 in FIG. 3. Also, the data "No. 14" to "No. 17" in format 232 do not exist in format 231, so conversion to expand the format is required in step S106 in FIG. 3.

When the format is converted according to the above format conversion image 230, "No. 14" to "No. 17" of format 232 are added, and the total capacity increases by 32 bytes from 48 bytes to 80 bytes.

Returning to the explanation of FIG. 3, after the format conversion of the change information in step S106 is completed, the format conversion unit 122 selects one of the unprocessed change information and repeats the process from step S104. Then, when the processes of steps S104 to S106 are completed for all the change information, the format conversion is completed for all of the communication data received by the data receiving unit 121 in step S101 (see FIG. 8). Then, the format conversion unit 122 ends the message conversion process and requests the data transmitting unit 123 to transmit the converted message (communication data).

Figure 8 shows an example of the configuration of traffic replanning information before and after format conversion. As an example showing the change in the data configuration of communication data due to format conversion, Figure 8 displays traffic replanning information 241 before format conversion and traffic replanning information 242 after the format has been converted based on the data shown in Figures 4 to 7 for comparison.

According to FIG. 8, the operation reorganization information 241 before the format conversion is composed of one common part information and four change information. Specifically, the four change information are composed of two "departure order change CHD (type code: 0x01)", one "departure order deletion CHD (type code: 0x02)", and one "block order deletion CHD (type code: 0x04)". The total size of the operation reorganization information 241 before the format conversion is 264 bytes.

On the other hand, the operation reorganization information 242 after the format conversion is composed of one common information and four change information, just like before the conversion, but the increase in the size of each change information has increased the total size by 120 bytes to 384 bytes. This is because the format conversion of the change information performed in step S106 in Figure 3 has increased the required capacity for each change information. However, this is just one example, and it is naturally possible that the size will not change or will decrease even if the format is converted. For example, as shown in the format conversion image 210 in Figure 5, the item name of the data "No. 11" in the common information is converted by format conversion, but the capacity does not change, so the total size remains at 48 bytes.

As described above, the message conversion system 3 according to this embodiment includes a message conversion device 31 that unilaterally acquires communication data from the traffic control system 1, and a message conversion device 32 that appropriately converts the format of the communication data acquired by the message conversion device 31 and transmits it to the test system 2. In particular, the message conversion device 31 does not set a receiving IP address, so that it transmits communication data from the traffic control system 1 in only one direction and can block communication data from being transmitted from the test system 2 to the traffic control system 1.

In addition, as described with reference to FIG. 3, the message conversion system 3 executes a message conversion process for each message (communication data), thereby converting the format of the communication data into a format that can be used by the test system 2 while maintaining the input timing in the traffic control system 1, and transmitting the communication data to the test system 2.

In addition, in the message conversion process, the message conversion system 3 converts the format of change information and common part information that require format conversion, without changing the arrangement of change information that does not require format conversion, in accordance with the arrangement of the communication data acquired from the traffic control system 1. In other words, by sequentially converting the format of only the data required for each data type without changing the order of the information in the message, it is possible to generate communication data to be sent to the test system 2 in the same arrangement as the communication data acquired from the traffic control system 1.

In addition, in the message conversion process, the message conversion system 3 converts the format in units of common part information and change information depending on the type of communication data acquired from the operation management system 1 and the type of change information contained in the communication data, so that it can flexibly convert the format even for communication data (messages) whose overall format structure cannot be determined in advance.

As described above, according to the electronic message conversion system 3 of this embodiment, communication data of the online system can be sent to the test system 2 without modifying the online system (operation control system 1) for software evaluation in the test system 2, in other words, without affecting the operation of the online system. As a result, it becomes possible to accurately simulate the environment of the online system in the test system 2 and perform software evaluation tests such as system updates.

The present invention is not limited to the above-described embodiment, but includes various modified examples. For example, the above-described embodiment has been described in detail to clearly explain the present invention, and is not necessarily limited to having all of the configurations described. In addition, it is possible to add, delete, or replace part of the configuration of the embodiment with other configurations.

Furthermore, the above-mentioned configurations, functions, processing units, processing means, etc. may be realized in hardware, in part or in whole, for example by designing them as integrated circuits. Furthermore, the above-mentioned configurations, functions, etc. may be realized in software, by a processor interpreting and executing a program that realizes each function. Information on the programs, tables, files, etc. that realize each function can be stored in a memory, a recording device such as a hard disk or SSD (Solid State Drive), or a recording medium such as an IC card, SD card, or DVD.

In addition, the control lines and information lines shown in the drawings are those that are considered necessary for explanation, and do not necessarily show all control lines and information lines on the product. In reality, it can be assumed that almost all components are interconnected.

REFERENCE SIGNS LIST 1 Traffic management system 2 Test system 3 Message conversion system 11 Traffic management terminal 12 Command management central unit 31, 32 Message conversion device 41, 42, 43 LAN
111, 121 Data receiving unit 112, 123 Data transmitting unit 122 Format conversion unit 124 Format-compatible data

Claims (8)

A message conversion system that connects an online system that operates online and a test system that performs software evaluation tests by simulating an environment of the online system,
a first electronic message conversion device connected to the online system via a first network;
a second telegram conversion device connected to the test system via a second network and connected to the first telegram conversion device via a third network;
Equipped with
The first electronic message conversion device
a receiving IP address from the online system is not set, and a first IP address is set as a sending IP address to the second electronic message conversion device;
acquiring communication data flowing within the online system via the first network, and transmitting the data to the second electronic message conversion device via the third network;
The second electronic message conversion device
setting a second IP address different from the first IP address as a receiving IP address from the first electronic message conversion device and a sending IP address to the test system;
a communication data conversion system that converts a format of the communication data received from the first communication data conversion device via the third network into a format that can be used by the test system, and transmits the format-converted communication data to the test system via the second network. the communication data includes common part information composed of common data items regardless of the type of the communication data, and a plurality of pieces of change information whose combinations differ depending on the type of the communication data;
the first electronic message conversion device transmits the communication data to the second electronic message conversion device every time the first electronic message conversion device acquires the communication data from the online system;
The electronic message conversion system according to claim 1, characterized in that the second electronic message conversion device converts the format of the communication data each time it receives one of the communication data from the first electronic message conversion device, and transmits the format-converted communication data to the test system. the plurality of pieces of change information included in the communication data are configured by a combination of pieces of change information whose data configurations are defined for each type,
The second electronic message conversion device
retaining format correspondence data indicating a correspondence relationship between a format of the common part information and the change information in the online system and a format available in the test system;
The electronic message conversion system according to claim 2, characterized in that, in converting the format of the communication data, the format of the common part information is converted based on the correspondence relationship indicated in the format correspondence data, and the formats of the plurality of pieces of change information are converted for each of the change information classified by type. The electronic message conversion system according to claim 3 , wherein the second electronic message conversion device converts the formats of the common part information and the plurality of pieces of change information in accordance with an order of data arrangement of the communication data. The second electronic message conversion device
A list of change information indicating types of change information that require format conversion for use in the test system is stored;
The electronic message conversion system according to claim 4, characterized in that when converting the formats of the plurality of pieces of change information, the format of only the change information of a type that requires format conversion is converted based on the list information. The electronic message conversion system according to claim 1, characterized in that, when converting the format of the communication data, the second electronic message conversion device performs at least one of changing the size of the data to be converted, changing the data items of the data, or adding data items to the data . The electronic message conversion system according to claim 2, characterized in that the common part information of the communication data includes information indicating the number of pieces of change information contained in the communication data, the total size of the communication data, and a sender of the communication data. 1. A method for converting electronic messages by a electronic message conversion system that connects an online system that operates online with a test system that performs software evaluation tests by simulating an environment of the online system, comprising:
the electronic message conversion system includes a first electronic message conversion device connected to the online system via a first network, and a second electronic message conversion device connected to the test system via a second network and connected to the first electronic message conversion device via a third network;
a receiving IP address from the online system is not set in the first electronic message conversion device, and a first IP address is set as a sending IP address to the second electronic message conversion device;
a second IP address different from the first IP address is set in the second electronic message conversion device as a receiving IP address from the first electronic message conversion device and a sending IP address to the test system;
the first electronic message conversion device acquires communication data flowing within the online system via the first network, and transmits the communication data to the second electronic message conversion device via the third network;
a second electronic message conversion device converting a format of the communication data received from the first electronic message conversion device via the third network into a format usable by the test system, and transmitting the format-converted communication data to the test system via the second network.

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