JP5854962B2 - Message control communication device - Google Patents

Description

  The present invention relates to a message control communication device that transmits a message composed of various information data.

As a device for transmitting a telegram composed of various information data, for example, there is a telegram control communication device in the railway field, a device for transmitting information data to a railway vehicle, a railway traffic light, a railway track monitoring device, a railway vehicle, It is a device that transmits various information data from the railway track monitoring device to the ground control device. These data transmission devices are configured to be fail-safe data transmission devices so that erroneous message data is not sent from the transmission side to the reception side.
That is, when a failure or abnormality occurs in the message transmission device, an incorrect message is transmitted and a problem occurs. Therefore, the configurations disclosed in Patent Document 1 and Patent Document 2 are proposed.

  In Patent Document 1, two bus lines are provided, the same data can be sent from each CPU to each data bus of the two bus lines, the both data are compared, and both of the data are compared. It describes that data cannot be transmitted to the outside when a mismatch is detected.

  Moreover, in patent document 2, a message transmission apparatus produces | generates a transmission message and a verification message simultaneously. The modulation unit performs modulation processing on the transmission message and the verification message, and generates a combined carrier signal of the transmission message and the verification message. Only the frequency band component of the transmission message is extracted and transmitted to the rail. On the other hand, the synthesized carrier signal to be output is demodulated by the demodulator, and a transmission message and a verification message are taken out. If the verification message and the transmitted message are collated, and the collation result is incompatible, transmission stop control of the transmitted message is performed.

  In the above two patent documents, the fail safeness of the device output is realized by multiplexing the output message, multiplexing the transmission means of the carrier frequency band, and performing the collation process for the output message.

JP-A-9-288630 JP 2011-146965 A

  Patent Document 1 describes a mechanism that realizes fail-safety of output of a data transmission apparatus by performing output data multiplexing, transmission means multiplexing, and collation processing for output data. . Further, in Patent Document 2, fail-safety of output of a data transmission device is realized by performing multiplexing of output telegrams and multiplexing of transmission means such as carrier frequency band and collating processing for output telegrams. The mechanism is described.

  However, since the transmission devices of Patent Document 1 and Patent Document 2 multiplex output information and transmission means, the device configuration is complicated and the device failure rate increases due to the complexity. Problems such as a decrease in reliability and an increase in device cost occur.

  Accordingly, an object of the present invention is to provide a message control communication device that realizes fail-safety without complicating the configuration of a transmission device, improves the reliability of the device, and suppresses an increase in device cost. There is to do.

  The present invention can be grasped from a plurality of viewpoints as means for solving the above problems. The invention from the first viewpoint is as follows.

The message control communication device of the present invention creates an output message including control information to be transmitted to an external device based on input information, or includes control information to be prepared in advance and transmitted to the external device. A control unit that selects an output message from a plurality of messages and transmits the output message to the message switching information generation unit;
Create message switching information that changes for each message output cycle, add the created message switching information to the output message transmitted from the control unit, and output message with the message switching information added to the output unit and consistency determination unit A message switching information generation unit to be transmitted to
A consistency determination unit that performs an output message consistency determination using the output message transmitted from the message switching information generation unit, and transmits the determination result to the output unit;
According to the determination result of the consistency determination unit, an output unit that outputs an output message to the outside of the device,
The output unit transmits the output message to which the message switching information received from the message switching information generation unit is added to the consistency determination unit as a readback message,
The consistency determination unit performs consistency determination on the readback message based on the output message received from the message switching information generation unit, and when the readback message matches, transmits the determination result to the output unit, Is a message control communication device that outputs an output message outside the device.

  Although the present invention has been described as being able to grasp the present invention from a plurality of viewpoints as means for solving the above-described problems, the invention from other viewpoints will be described by the following description of embodiments for carrying out the invention.

According to the configuration of the present invention, fail-safe telegram data output can be realized in the telegram control communication device in a single transmission means without multiplexing transmission data or multiplexing transmission systems.
Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

It is the schematic of the data transmission system in the railroad signal security field | area explaining one application example regarding this invention. It is a schematic block diagram explaining the structure of Example 1 of this invention. It is a flowchart figure explaining the process of Example 1 of this invention. It is a schematic block diagram explaining the structure of Example 2 of this invention. It is a schematic block diagram explaining the structure of Example 3 of this invention. It is a schematic block diagram explaining the structure of Example 4 of this invention. It is a flowchart figure explaining the process of Example 4 of this invention. It is a schematic block diagram explaining the other structure of Example 4 of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following examples show specific examples of the contents of the present invention, and the present invention is not limited to these examples. Those skilled in the art within the scope of the technical idea disclosed in the present specification. Various changes and modifications are possible. In all the drawings for explaining the embodiments, the same reference numerals are given to those having the same function, and the repeated explanation thereof may be omitted.

  Example 1 is an example in which the telegram control communication device of the present invention is applied to the railway security field.

  As shown in FIG. 1, in the railway signal security field, a telegram is transmitted to a traveling train (1) passing through a communication ground element (2) installed along a track. As an application example of the present invention, the ground unit control unit (4) connected to the communication ground unit (2) and performing control thereof is a target. The ground unit control unit (4) creates or selects an appropriate message based on external input information from the traffic signal (3) or communication means (5) such as a communication network or a train centralized control device, and performs communication. A telegram control communication device for transmitting to the traveling train (1) passing through the ground unit (2) is provided.

FIG. 2 is a schematic system configuration diagram of the first embodiment.
In FIG. 2, the message | telegram control communication apparatus of Example 1 is comprised from the control part (6), the message | telegram switching information generation part (7), the output part (8), and the consistency determination part (9). The control unit (6), the message switching information generation unit (7), and the consistency determination unit (9) include a fail-safe control board (15), for example, a dual circuit system in which components such as a CPU are duplicated. It is mounted with a fail-safe control board (15) composed of On the other hand, the output unit (8) may be mounted on an output board (16) that is not fail-safe.

  The control unit (6) has a function of creating an output message including control information used by an external device such as stop train and deceleration control information and redundant code information that protects the message bit string from environmental noise. And a function for selecting an output message from a plurality of messages prepared in advance. Here, communication information used for communication control including the address of the on-board device of the traveling train may be further added to the output message.

  The message switching information generation unit 7 has a function of creating message switching information or message alternation information (generically referred to as message switching information) that changes and alternates every message output cycle (for example, every 200 msec). The message switching information (or message alternation information) includes information indicating that a new message has been created and presented, and alternation information (for example, 1, 2, 3,...) Attached to the message for each message output cycle. Or a continuous number such as A, B, C...

  The output unit (8) has a function of sending the output telegram (21) to the outside of the device, and fixes the output to the outside of the device to the safe side by the signal (20) received from the consistency determining unit (9). Functions such as blocking transmission of a message due to output stop and a function of limiting output to a voltage value in a range that the ground unit does not receive as a message. In addition, the consistency determination unit (9) provides a function for performing consistency determination on the readback message read back from the output unit (8), and a consistency determination result (20) related to the readback message. It has a function to transmit to 8).

FIG. 3 shows a flowchart of the operation of the message control communication apparatus of the first embodiment.
In FIG. 3, the control unit (6) obtains external input information (17) from the outside of the communication network, train centralized control device, traffic light or other device (step 31) and creates an output message based on the information or Select (step 32). The created or selected message is transmitted to the message switching information generation unit (7), and the message switching information generation unit (7) generates message switching information (alternating information), and the created message switching information is output as an output message. The transmission message (18) to which the message switching information is added is transmitted to the output unit (8) and the consistency determination unit (9) (step 33).

  The output unit (8) transmits the received output message (19) to which the message switching information is added to the consistency determination unit (9) as a readback message (step 34). The consistency determination unit (9) performs consistency determination on the readback message (19) using the output message (18) directly received from the message switching information generation unit (7), and matches the readback message. The sex determination result (20) is transmitted to the output unit (step 35). If the consistency can be detected based on the determination result (20) received from the consistency determination unit (9), the output unit (8) transmits the output message (21) to the outside of the apparatus (step 36). On the other hand, if an inconsistency is detected, a process for fixing the output message to the outside of the device to the safe side (step 37), for example, blocking transmission of a message due to output stop, or a voltage value in a range that the ground unit does not receive as a message Perform processing to limit output to. Note that the transmission of the message to the external device may be performed by wireless transmission using a wireless communication device, and when a closed section is provided, various means such as transmission via a track circuit (rail) can be implemented.

  As described above, in the first embodiment, fail-safety of the device output is realized by performing consistency determination on the readback message (19) read back from the output unit (8).

  As for the output unit (8), the output message that has been output in the previous cycle is erroneously transmitted to the consistency determination unit (9) as a result of a software or hardware failure, and the incorrect output message is sent to the device. Measures should be taken in the event of a fixed failure that erroneously outputs to the outside. In other words, the output unit (8) has an output message buffer, and once the output message is stored in this buffer, the output message is output to the outside of the device, but a new message is created due to some trouble. Regardless, it is necessary to take measures when a problem occurs in which old messages stored in the buffer continue to be output without outputting new messages. For such a fixed failure of the output unit, the message control communication device of the present invention adds message switching information (alternating information) that changes every message output cycle to the output message as described in the first embodiment. Therefore, a message in the previous cycle is not output to the outside of the device, and it is possible to detect the occurrence of a fixed failure in the message control communication device by confirming the message switching information (alternating information).

  The output unit (8) sends an output message (21) to the outside of the device (step 36) if the consistency can be detected based on the determination result (20) received from the consistency determination unit (9). The output message may be an output message to which message switching information is added or an output message from which message switching information is removed. If the output message to which the message switching information is added is output, it can also be used as message switching information in the receiving external device, which can contribute to fail-safety.

FIG. 4 shows a schematic configuration diagram of a second embodiment of the telegram control communication apparatus of the present invention.
The second embodiment is constructed based on the first embodiment. The difference between the second embodiment and the first embodiment is that the data compression unit 1 (10) that compresses the readback message and the data is compressed and transmitted to the consistency determination unit. A data decompression unit (14) for decompressing the readback message.

  In the message control communication apparatus according to the second embodiment, the data compression unit 1 using CRC or the like is used for the purpose of reducing the communication load of the transmission path for transmitting the readback message from the output unit (8) to the consistency determination unit (9). (10) and a data decompression unit (14) corresponding to the corresponding data compression unit 1 are additionally installed.

  The readback message compressed by the data compression unit 1 (10) is decompressed by the data decompression unit (14) and transmitted to the consistency determination unit 9 to determine consistency. Since other operations are the same as those of the message control communication apparatus of the first embodiment, the description thereof is omitted.

FIG. 5 shows a schematic configuration diagram of a third embodiment of the message control communication device of the present invention.
The message control communication device according to the third embodiment is constructed based on the first embodiment. The difference between the third embodiment and the first embodiment is that the data compression unit 1 (10) that compresses the readback message and the transmission message 18 as data. That is, a data compression unit 2 (11) for compression is provided.

  In the message control communication device of the third embodiment, the data compression unit 1 such as CRC is used for the purpose of reducing the communication load of the transmission path for transmitting the readback message from the output unit (8) to the consistency determination unit (9). Added (10). In addition, data compression means 2 (11) such as CRC is added for the purpose of reducing the communication load of the transmission path for transmitting the transmission message from the message switching information generation unit 7 to the consistency determination unit.

  The transmission message and the readback message compressed by the data compression unit 1 (10) and the data compression unit 2 (11) are transmitted as compressed data to the consistency determination unit (9). For example, the CRC output value is matched. Sex is determined. Since other operations are the same as those of the message control communication apparatus of the first embodiment, the description thereof is omitted.

FIG. 6 shows a block diagram of a fourth embodiment of the message control communication apparatus of the present invention.
The message control communication device according to the fourth embodiment is constructed based on the third embodiment. The difference between the fourth embodiment and the third embodiment is that a plurality of prepared messages and a message index corresponding to each prepared message are stored. That is, the part A (12) and the storage part B (13) are additionally mounted on the control board (15) and the output board (16), respectively.

  In the message control communication device of the fourth embodiment, a storage unit that stores a plurality of prepared messages and a message index corresponding to each prepared message, that is, a storage unit A (12) and a storage unit B (13). Are added and mounted on the control board and output board, respectively, so that a predetermined preparation message can be selected. In the message control communication device according to the fourth embodiment, the control unit (6) transmits a message index corresponding to the created or selected output message to the storage unit A (12) and the storage unit B (13), and the storage unit A (12 ) Transmits the prepared message corresponding to the received message index as an output message to the message switching information generating unit (7), and the storage unit B (13) transmits the prepared message corresponding to the received message index. It transmits to an output part (8) as an output message.

FIG. 7 is a flowchart of an operation when a plurality of preparation messages are used in the message control communication device according to the fourth embodiment.
In FIG. 7, the control unit (6) obtains external input information (17) from the outside of the communication network, train centralized control device, traffic light or other device (step 71), and based on the information, the telegram index of the output message Is transmitted to the storage unit A (12) and the storage unit B (13) (step 72). The storage unit A (12) transmits a preparation message corresponding to the selected message index to the message switching information generation unit (7) (step 73). The message switching information generation unit (7) creates message switching information (alternating information), outputs the created message switching information and the output message body, and transmits the message switching information to the output unit (8). The message switching information and the transmission message (18) are transmitted to the compression unit 2 (11), and the message with message switching information is compressed and transmitted to the consistency determination unit (9) (step 74). Thus, communication load can be reduced by eliminating transmission and reception of the output message body between the control board and the output board.

The storage unit B (13) transmits a preparation message corresponding to the selected message index to the output unit (8) (step 75). In addition, the output unit (8) outputs the output message to which the message switching information received from the message switching information generation unit (7) is added as the readback message (19) via the data compression unit 1 (10). It transmits to a consistency determination part (9) (step 76). The consistency determination unit (9) uses the compressed data (for example, CRC) of the transmission message (18) received from the data compression unit 2 (11) to determine the consistency of the compressed data of the readback message (19). Then, the determination result (20) of the consistency of the readback message is transmitted to the output unit (step 77). If the consistency can be detected based on the determination result 20 received from the consistency determination unit (9), the output unit (8) sends the output message 21 to the outside of the device (step 78) or detects an inconsistency. If the case and the consistency determination result are not transmitted, the process of fixing the output message to the outside of the device to the safe side (step 79), for example, the transmission of the message due to the output stop or the range where the ground unit does not receive as a message Performs processing to limit output to voltage value.
Here, a configuration as shown in FIG. 8 is also possible. In FIG. 6, the message index is transmitted to the storage unit B and the message switching information is directly transmitted to the output unit. However, in the configuration of FIG. 8, the message index and the message switching information are combined in the control board. A message switching information composition unit is provided. The message index with message switching information is transmitted to the storage unit B, and the storage unit B transmits the message corresponding to the message index received from the control unit and the message switching information to the output unit. In this configuration, since the message index is transmitted to the storage unit B via the message switching information combining unit, the storage unit A and the storage unit B do not need to match the information on the message index.

  As described above, in the fourth embodiment, a storage unit storing a plurality of prepared telegrams prepared in advance and a telegram index corresponding to each prepared telegram, that is, the storage unit A (12) and the storage unit B ( 13), and by performing consistency determination on the readback message (19) read back from the output unit (8) by, for example, consistency determination of a CRC output value, the apparatus output fail-safe Realize the sex.

DESCRIPTION OF SYMBOLS 1 Traveling train 2 Communication ground element 3 Traffic signal 4 Ground element control unit 5 External communication apparatuses other than traffic signals, such as a communication network and a train centralized control apparatus 6 Control part 7 Message | telegram switching information generation part 8 Output part 9 Consistency judgment part 10 Data compression Part 1
11 Data compression 2
12 Storage unit A
13 Memory B
14 Data decompression means 15 Control board 16 Output board 17 External input information 18 Transmission message 19 Readback message 20 Signal to fix output to safe side when mismatch is detected 21 Output message

Claims (7)

Based on the input information, a control unit that creates or selects a telegram index corresponding to an output telegram to be transmitted to the outside of the apparatus, a plurality of preparation telegrams, the preparation telegram corresponding to the telegram index received from the control unit A storage unit A that outputs as an output message, a message switching information generation unit that receives the output message from the storage unit A and generates message switching information that changes for each message output cycle, and a message switching information generation unit A control board comprising: a second data compression unit that compresses the output message and the message switching information; and a consistency determination unit that determines the consistency of the output message.
A storage unit B that includes the plurality of preparation messages and outputs the preparation message corresponding to the message index received from the control unit as the output message, the output message received from the storage unit B, and the message switching information An output unit including an output unit that outputs the message switching information received from the generation unit as a readback message, and a first data compression unit that compresses the readback message and transmits the compressed message to the consistency determination unit. A message control communication device,
The consistency determination unit receives from the first data compression unit provided in the output board based on the output message and the message switching information received from the second data compression unit provided in the control board. Determine the consistency of the readback message,
The said output part is a message | telegram control communication apparatus which outputs the said output message | telegram outside the apparatus based on the result of the said determination received from the said consistency determination part. In the message control communication device according to claim 1 ,
The control board further includes a message switching information combining unit that combines the message index received from the control unit and the message switching information received from the message switching information generation unit,
The storage unit B receives the message index from the control unit via the message switching information combining unit,
The said output part is a message | telegram control communication apparatus which receives the said message | telegram switching information from the said message | telegram switching information generation part via the said message | telegram switching information synthetic | combination part and the said memory | storage part B. FIG. In the message control communication device according to claim 1 or 2 ,
The output unit is
When the consistency of the readback message is detected, the output message is output to an external device,
When inconsistency of the readback message is detected, or when the determination result is not transmitted, the output to the external device is stopped, or a signal for fixing the output to the external device to the safe side is output. Or the message | telegram control communication apparatus which outputs the message | telegram which instruct | indicates the operation | movement stop or operation | movement restriction | limiting of the said external device. A message index corresponding to an output message including information for control used outside the apparatus and redundant code information for protecting the message bit string from environmental noise is created, or the message index is created from a plurality of the message indexes prepared in advance. A control unit for selecting
A message switching information generation unit for creating message switching information that changes for each message output cycle;
When the consistency determination for the output message is performed and there is no consistency, the consistency determination unit that transmits the result of the consistency determination to the output unit; and
A message control communication device comprising: a message output unit that outputs the output message to the outside of the device; and the output unit including a fixed message output unit that fixes the output to the outside of the device on the safe side,
A storage unit A that stores a plurality of the output messages and transmits the output message corresponding to the message index received from the control unit to the message switching information generation unit;
A storage unit B that stores a plurality of the output messages and transmits the output message corresponding to the message index received from the control unit to the output unit;
A first data compression unit that compresses the readback message received from the output unit and transmits the compressed message to the consistency determination unit;
A second data compression unit that compresses the output message received from the message switching information generation unit and the message switching information and transmits the compressed message to the consistency determination unit.
The control unit creates or selects the output message based on the external input information acquired from the outside of the device and transmits it to the message switching information generation unit,
The message switching information generation unit creates the message switching information, transmits the created message switching information to the output unit and the consistency determination unit,
The output unit transmits the message switching information and the output message received from the message switching information generation unit to the consistency determination unit as the readback message,
The consistency determination unit uses the compressed output message and the message switching information received from the message switching information generation unit to perform consistency determination on the compressed readback message,
If the readback message does not match, the result of the consistency determination is transmitted to the output unit, and the output unit fixes the output to the outside of the device to the safe side. Based on the input information, create a message index corresponding to the output message containing control information transmitted to the outside of the device, or select the message index from a plurality of the message indexes prepared in advance, and the message index A control unit for transmitting the message to the message switching information generation unit;
Creating a message switching information that changes for each message output cycle, the message switching information created, and the message switching information generation unit that transmits the output message to an output unit and a consistency determination unit;
The consistency determination unit that performs the consistency determination of the output message by the output message transmitted from the message switching information generation unit, and transmits the result of the consistency determination to the output unit;
According to the determination result of the consistency determination unit, the output unit that outputs the output message to the outside of the device,
A storage unit A that stores a plurality of the output messages and transmits the output message corresponding to the message index received from the control unit to the message switching information generation unit;
A storage unit B that stores a plurality of the output messages and transmits the output message corresponding to the message index received from the control unit to the output unit;
A first data compression unit that compresses the readback message received from the output unit and transmits the compressed message to the consistency determination unit;
A second data compression unit that compresses the output message received from the message switching information generation unit and the message switching information and transmits the compressed message to the consistency determination unit.
The output unit transmits the message switching information and the output message received from the message switching information generation unit to the consistency determination unit as the readback message,
The consistency determination unit performs consistency determination on the compressed readback message based on the compressed output message and the message switching information received from the message switching information generation unit, and the readback message is matched. In this case, the message control communication device is characterized in that the result of the consistency determination is transmitted to the output unit, and the output unit outputs the output message to the outside of the device. In the message control communication device according to claim 5 ,
A message switching information combining unit that combines the message switching information output from the message switching information generation unit and the message index output from the control unit, and transmits the message index to the storage unit B;
The storage unit B transmits the output message and the message switching information corresponding to the message index received from the control unit to the output unit. In the message control communication device according to claim 6 ,
The said output message | telegram is a message | telegram control communication apparatus which is the information data transmitted to the on-board apparatus of a train vehicle from the communication ground element along a track.

Images