JP2002304307A - Multiple system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multiple system capable of starting a halting system and subsequently entering the halting system in the multiple system without stopping control processing in a system in operation. SOLUTION: In this multiple system, a subsequent entry start part 14 of the subsequent entry system informs a precedent system of subsequent entry, and a subsequent entry data transmission part 12 of the precedent system transmits subsequent entry data necessary for the subsequent entry. A subsequent entry data reception part 15 of the subsequent entry system receives the subsequent entry data, and a subsequent entry data collation/conformation part 16 conforms internal data in its own system with the subsequent entry data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multiplex system having high reliability by providing a plurality of identical systems.

[0002]

2. Description of the Related Art A multiplex system is, for example, a railway AT.
C (automatic train control)
Used in systems that require very high reliability, such as systems and air traffic control systems, and in many cases, multiple controls that have exactly the same or partially different but nearly identical functions It is a system with a department.

In such a multiplex system, when starting operation of a stopped system, for example, when a failure occurs in a certain system or when the multiplex system is improved by newly adding a device, the system is not used. It is necessary to restart the operation in synchronization with the whole.

Conventionally, such operation restarting operation is performed by one of the following methods (1) and (2).

(1) After stopping all the systems of the operating control unit, all the systems are started simultaneously with the stopped system.

(2) The system that has been stopped is activated on the assumption that the input information to the control unit does not change at all.

When the operation is restarted as in (2), any of the following states (a) and (b) is further realized in order to guarantee that the input information does not change at all. Above, it is necessary to start the stopped system.

(A) The controlled object itself is not moved.

(B) Aim at a time zone in which the control object does not change.

[0010]

However, when the operation is restarted as described in the above (1), the control processing cannot be continued because the entire system is temporarily stopped, and the operation rate of the multiplex system is reduced. There is a problem of decline.

[0011] Further, in the above (A) in the case of the above (2), this is the same as the state where the control unit is stopped in the whole system.
After all, there is a problem that the operation rate of the entire system is reduced. Further, in the method (b), the method cannot be performed when the control target frequently changes, and there is no other way but to reduce the operation rate such as putting the entire system into a stopped state after all. If the control target changes only at night,
Only during that time period, the operation of the stopped system cannot be resumed. For example, there is a problem that the time from the failure of a certain system to the completion of the repair becomes long and the reliability is reduced.

[0012] These problems are undesirable in a multiplex system requiring high reliability.

[0013] Further, in both (a) and (b), labor is required to confirm that the control object does not change.
Further, if the conditions (a) and (b) are not satisfied while the stopped system is being activated, there is a possibility that internal data mismatch between the preceding system and the succeeding system may occur. There is a problem that the processing results of the preceding system and the subsequent system do not match, and the operation of the multiplex system becomes uncertain.

The present invention has been made in view of the above,
The purpose is to start the stopped system without stopping the processing of the control unit in the running system and without considering whether the input information to the control unit has changed. It is an object of the present invention to provide a multiplex system that can be re-entered into the market.

[0015]

According to the first aspect of the present invention,
In order to solve the above problems, in a multiplex system including a plurality of systems, a control process execution unit that executes a control process in the own system, a post-entry monitoring unit that monitors that a post-entry system has been activated, When the post-entry monitoring means detects the activation of the post-entry system, a post-entry data transmitting means for transmitting post-entry data necessary for post-entry to the post-entry system, and when the own system is a leading system, A post-entry permitting means for receiving a post-entry completion signal from the post-entry system and notifying the post-entry system of the post-entry permission, and judging that the own system is a post-entry system from the operation status of the other system, and A post-entry start means for notifying the post-entry process and starting post-entry processing; a post-entry data receiving means for receiving the post-entry data by starting the post-entry processing by the post-entry processing means; After the data receiving means received By comparing the incoming data with the internal data in the own system, the post-entry data matching and matching means for matching the data in the case of a mismatch, and by matching the data by the post-entry data matching and matching means, Notifying the preceding system that the post-entry has been completed, and receiving a post-entry permission signal from the post-entry permission means of the preceding system,
And a post-entry completion means for causing the control processing execution means to start the control processing.

According to the present invention, in the preceding system which is operated first, the rear entry monitoring means monitors the rear entry system started later and detects the start of the rear entry system, and transmits the rear entry data. The means transmits post-entry data necessary for post-entry to the post-entry system, and the post-entry permission means receives a post-entry completion signal from the post-entry system and notifies the post-entry system of post-entry permission.
On the other hand, in the post-entry system started later, the post-entry start means determines that the own system is the post-entry system from the operating state of the other system and notifies the preceding system of the post-entry, and To start the process for receiving the post-entry data transmitted from the preceding entry data transmission means, and receiving the post-entry data received by the post-entry data collating and matching means into the internal data in the own system. By matching the data in the case of a mismatch, the internal data of the preceding system and the succeeding system are matched, and the rear entry completion means notifies the preceding system that the rear entry has been completed, and Receiving the post-entry permission signal from the post-entry permission means and causing the control processing execution means to start the control processing, thereby grasping that the rear entry has been completed in both the pre-system and the post-entry system. To be able to lead while driving Without stopping the control process, it is intended to be able to participate in multiple systems by starting the rear entry system.

According to a second aspect of the present invention, in the multiplex system according to the first aspect, the post-entry completion means sends the post-entry start means again when the notification of the post-entry permission cannot be received. The gist is to notify the preceding system of the post-entry and to instruct the preceding system to start the post-entry process.

According to the present invention, when the notification of the permission of the post-entry cannot be received, the post-entry starting means is again notified of the post-entry to the preceding system and instructed to start the post-entry processing. In order to retry the entry.

According to a third aspect of the present invention, in the multiplex system according to the second aspect, the post-entry completion means stops processing in the post-entry system when the notification of the post-entry permission cannot be received a predetermined number of times. That is the gist.

The present invention is intended to limit the number of retries to be performed when the notification of the post-entry permission cannot be received by stopping the process in the post-entry system when the notification of the post-entry permission cannot be received a predetermined number of times. It is.

According to a fourth aspect of the present invention, in the multiplex system according to any one of the first to third aspects, the post-entry completion means is provided by the post-entry data collating and matching means. It is determined that after entry is made the specified number of times, it is determined that the subsequent entry is completed.

According to the present invention, the post-entry completion means determines that the post-entry is completed when the collation of the post-entry data matches the designated number of times, so that the data in the pre-entry system and the post-entry system can be determined by external noise or the like. According to a fifth aspect of the present invention, there is provided a multiplexing system according to any one of the first to fourth aspects, wherein the subsequent entry data transmitting means is specified in advance. The gist is to transmit data as the post-entry data.

According to the present invention, by specifying the post-entry data, the amount of post-entry data to be collated and matched in the post-entry system is reduced, and the number of executions of the control processing per unit time is kept constant. What you want to do.

According to a sixth aspect of the present invention, in the multiplex system according to any one of the first to fifth aspects, the second entry data transmitting means divides the second entry data into a predetermined size or less and transmits the divided data. The point is to do.

According to the present invention, the post-entry data is divided into a predetermined size or less and passed from the preceding system to the rear-entry system.
It is intended to keep the number of executions of the control processing per unit time constant.

According to a seventh aspect of the present invention, in the multiplex system according to any one of the first to sixth aspects, the rear entry data transmitting means converts the rear entry data to be transmitted into a plurality of rear entry data units. The gist of the present invention is that the specified unit is transmitted as a group from the plurality of units of the subsequent entry data.

According to the present invention, the post-entry data is specified by dividing the post-entry data into a plurality of units of the post-entry data and transmitting a group of the specified units at one time from the divided data. It is intended to be able to divide it as described above and pass it from the preceding system to the later system.

According to an eighth aspect of the present invention, in the multiplex system according to the seventh aspect, the subsequent entry data transmitting means comprises:
The gist is that the group is transmitted in a designated transmission order.

According to the present invention, the subsequent entry data is divided as specified, and the data is transmitted from the preceding system to the subsequent entry system in the specified order.

According to a ninth aspect of the present invention, in the multiplex system according to any one of the first to eighth aspects, the rear entry data transmitting means transmits the rear entry data designated to be transmitted each time. The point is to do.

According to the present invention, by designating the post-entry data to be transmitted each time, the designated post-entry data is transmitted from the preceding system to the rear-entry system each time.

According to a tenth aspect of the present invention, in the multiplex system according to any one of the first to ninth aspects, the subsequent entry data receiving means requests the preceding system for the subsequent entry data, The gist of the post-entry data transmitting means is to transmit the post-entry data in response to a request for post-entry data from a post-entry system.

The present invention is intended to start transmission of post-entry data by a post-entry data request from a post-entry system to a preceding system.

The eleventh aspect of the present invention relates to the first to tenth aspects.
In the multiplex system according to any one of the above, the gist of the post-entry data is that the reception of the post-entry data is transmitted to the preceding system as an answer.

According to the present invention, in the reception of the post-entry data, the post-entry system transmits the reception of the post-entry data from the preceding system as an answer.

The twelfth aspect of the present invention provides the first to eleventh aspects.
In the multiplex system according to any one of the above, the post-entry data receiving means, from among the plurality of received post-entry data, to select the post-entry data used to match the internal data, the gist And

According to the present invention, the rear entry data receiving means selects data to be used for matching internal data from a plurality of received rear entry data and employs the selected data.

[0038]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below with reference to the accompanying drawings.

(First Embodiment) FIG. 1 is a block diagram showing the overall configuration of a multiplex system according to the first embodiment.

This multiplex system includes a plurality of systems from a first system to an n-th system, and each system has a control unit 1. Each control unit 1 is connected by a data transmission unit 2 for transmitting and receiving data. Functions of the control unit 1,
The operations are all the same, and each system having the control unit 1 transmits and receives data to and from another system via the data transmission unit 2 to constitute a multiplex system for improving reliability as a whole. are doing.

FIG. 2 is a block diagram showing the internal configuration of the control unit 1.

The control unit 1 is roughly divided into a normal operation part 51 operating at the time of normal operation, and a precedent system part 52 operating at the time of rear entry when the own system operates as the precedent system. Then, the system is divided into the post-entry system part 53 which operates when the own system enters the sub-system.

The normal operation part 51 includes a control processing execution unit 10 for performing control processing, and another system post-entry which monitors via the data transmission unit 2 that the control unit 1 other than the own system has been started up as a post-entry system. And a monitoring unit 11.

The pre-entry data transmission unit 12 transmits the post-entry data necessary for the post-entry to the post-entry system via the data transmission unit 2 when the own system is already in operation. When the own system is the preceding system, the rear entry system receives a rear entry completion signal from the rear entry system via the data transmission unit 2 and notifies the rear entry system of the rear entry permission via the data transmission unit 2. And a permission unit 13.

The post-entry system section 53 determines that the own system is the post-entry system from the operating state of the other control unit 1 via the data transmission unit 2 and starts the process for post-entry. A post-entry data receiving unit 15 that receives post-entry data via the data transmission unit 2 when the own system is a post-entry system, and a post-entry that is received from a preceding system, based on the judgment of the unit 14 The post-entry data matching / matching unit 16 that compares the data with the internal data in the own system and matches the data if they do not match, and determines that the last entry has been completed if the own system is the last entry system And a post-entry completion unit 17 that notifies the preceding system of the completion of the post-entry via the data transmission unit 2.

The above components in the control unit 1 are connected to the data transmission unit 2 by an internal data bus 20.
Sends and receives data with other systems.

Here, the precedent system refers to the control system that is already operating as a multiplex system, and the post-entry system is a control system that is activated later on the already operating system. Refers to the division system.

Next, the operation of the present embodiment will be described.

First, the operation of the control unit 1 during normal operation, that is, when there is no rear entry system, will be described.

FIG. 3 is a drawing showing the outline of the processing contents during normal operation in the control unit 1. FIG. 3 shows only the normal operation part 51 when all the control units 1 from the first system to the n-th system are operating.

During normal operation, each control unit 1 periodically starts a control processing execution unit 10 for performing control processing.
Then, the other system post-entry monitoring unit 11 is also activated periodically, and monitors via the data transmission unit 2 that the control unit 1 other than the own system has been started as a post-entry system. In the normal state, only the control processing execution unit 10 and the other system post-entry monitoring unit 11 are operating.

Next, a description will be given of the contents of processing when a later participant enters.

FIG. 4 is a diagram showing a processing sequence when a back-entry system enters in the first embodiment.

In the drawing, execution of control processing 101, 102
Indicates the occupation time of the process execution of the control process execution unit 10 in the preceding system as time progresses. Similarly, the post-entry data transmission 141 indicates the occupation time of the execution of the process by the preceding post-entry monitoring unit 11, the post-entry data transmission unit 12, and the post-entry permission unit 13.

On the other hand, the post-entry system activation 100 is a timing position at which the activation of the post-entry system starts, and the post-entry data reception 131 and the like are performed by the post-entry data entry unit 14, the post-entry data reception unit 15, It shows the occupation time of the process execution of the entry data collating and matching unit 16 and the post-entry completion unit 17, and the control process execution 112 is the control process execution unit 10 in the post-entry system.
Occupancy time of the process execution.

FIG. 5 is a diagram showing the exchange of data between the respective units in the control units of the preceding system and the rear-entry system when the latter enters. In this figure,
The control processing execution unit 10, the internal data bus 20, and the data transmission unit 2 are omitted.

First, in a state where the preceding system is normally operating,
When the subsequently entered control unit 1 is activated, the activated control unit 1 is activated.
, Determines from the operating state of the other control unit 1 via the data transmission unit 2 that the own system is the rear entry system, and starts the process for rear entry. At that time, the post-entry system notifies the start system via the data transmission unit 2 of the start of the post-entry at the timing of the post-entry system activation 100.

In the preceding system, in the control processing execution 101, when the other system post-entry monitoring unit 11 receives the notification of the start of the post-entry from the post-entry system and detects that the post-entry system has been activated, the post-entry system is started. The fact that the status of the system is “subsequent” is retained as internal information. After that, the leading system uses the change of the internal information of the other system's post-entry monitoring unit 11 to “being post-entry” as a trigger to send the post-entry reception to the post-entry system in the post-entry data transmission 141 and the like. And the subsequent entry data transmission unit 12 is activated.

In the post-entry system, when the post-entry start unit 14 receives a post-entry acceptance notification from the preceding system in the post-entry data reception 131, the post-entry data receiving unit 15 is activated.

Thereafter, the preceding entry data transmission unit 12
Transmits, via the data transmission unit 2, the data necessary for the later entry (the later entry data) among the internal data of the control unit 1 to the later entry system.

The post-entry data receiving unit 15 of the post-entry system receives and temporarily stores the post-entry data sent from the preceding system via the data transmission unit 2. Then, in the post-entry system, the post-entry data matching and matching unit 16 is activated, and compares and temporarily compares the post-entry data received from the preceding system and temporarily stored with the internal data of the post-entry system, If they do not match, the post-entry data is stored as internal data of the post-entry system.

As a result of the above processing, the internal data of the preceding system and the internal data of the subsequent system match.

Then, in the post-entry system, after the data is matched by the post-entry data collating and matching unit 16, the post-entry completion unit 17 is activated, and the post-entry completion is notified to the preceding system via the data transmission unit 2. To notify.

In the preceding system, the post-entry permitting unit 13 is activated,
When receiving the notification of the completion of the post-entry from the post-entry system, it notifies the post-entry system of the post-entry permission via the data transmission unit 2. Thus, it is possible to grasp that the post-entry has been completed in both the leading system and the post-entry system.

Therefore, in the preceding system, upon receiving the notification of the completion of the post-entry, the internal information that has been "post-entry" in the post-entry monitoring unit 11 of the other system is replaced with information indicating that it is "operating". Replace with On the other hand, in the post-entry system, when the post-entry completion unit 17 receives the notification of the post-entry permission from the preceding system, the post-entry completion unit 17 terminates the process related to the post-entry, and causes the control processing execution unit 10 to start the normal operation. Send a signal.

Thus, the post-entry data transmission and the like in FIG.
1. The processes up to 131, such as receiving the later entry data, are completed. Thereafter, control processing execution 102
And 112 are started, and the processing contents in the normal operation state without the participation system shown in FIG. 3 are periodically executed.

As described above, according to the first embodiment, without stopping the control processing of the control unit during operation, without considering whether there is a change in input information to the control unit, Since the stopped system can be started and later entered into the multiplex system, high reliability as the multiplex system can be maintained.

In the first embodiment, in addition to the above-described processing mode, for example, when the post-entry starting unit 14 cannot receive a notification of acceptance of the post-entry from the preceding system, the processing of the post-entry system is performed. May be retried from the start.

Here, the definition of the case where the notification of the re-entry reception cannot be received is, for example, the worst case from when the post-entry start unit 14 of the post-entry system transmits the post-entry start to when the post-entry reception is received. If you specify yourself that is determined as a result of analyzing or measuring the required time, and you can not receive a notification of acceptance of later entry even after the specified time has elapsed, or if the processing unit operates with fixed period execution, Specify the number of cycles determined by analyzing or measuring the worst required cycle from when the post-entry start unit 14 transmits the post-entry start to when the post-entry acceptance is received, and This is the case where the notification of acceptance of the post-entry cannot be received.

In these cases, by retrying the post-entry processing from the start, the robustness of the post-entry processing can be improved.

As another processing mode, when the post-entry starting unit 14 of the post-entry system cannot receive the notification of the reception of the post-entry from the preceding system, it repeats the retry of the process of the post-entry system and repeats the specified number of times. If it fails, the post-entry system may be stopped.

This is because a state in which retry of post-entry processing is repeated in the first place is an abnormal state. Therefore, by repeating retry for processing relating to post-entry, the processing load of the entire multiplex system is reduced. It is not appropriate to increase. For example, if the load of normal control processing suddenly increases while retry is repeated, it may not be possible to keep the number of executions of control processing per unit time constant. . Therefore, by limiting the number of retries, it is possible to cope with a sudden increase in processing load.

As another processing mode, when the post-entry completion unit 17 of the post-entry system cannot receive a notice of permission of post-entry from the preceding system, the post-entry start unit 14 returns to the post-entry start unit 14 again. By notifying the entry and instructing to start the post-entry process, the process of the post-entry system may be retried from the start.

Here, the definition of the case where the notification of the post-entry permission cannot be received is, for example, the worst case from when the post-entry completion section 17 of the post-entry system transmits the post-entry completion to when the post-entry permission is received. If you specify yourself as a result of analyzing or measuring the required time, and you can not receive notification of permission to enter after the specified time, or
When the processing unit operates in a fixed cycle, the result is determined in advance by analyzing or measuring the worst required cycle from when the post-entry completion unit 17 transmits the post-entry to when the post-entry system receives the post-entry permission. This is a case where the number of cycles is specified and a notification of acceptance of the post-entry cannot be received even after the cycle has elapsed.

In these cases, by retrying the post-entry processing from the start-up time, the robustness of the post-entry processing can be improved.

Further, as another processing mode, when the post-entry completion unit 17 of the post-entry system cannot receive the notification of the permission of the post-entry from the preceding system, it repeats the retry of the process of the post-entry system and repeats the specified number of times. If it fails, the post-entry system may be stopped.

This is because the state in which the retry of the post-entry processing is repeated is abnormal in the first place.
It is not appropriate to increase the processing load of the entire multiplex system by repeating retries for processing relating to the later entry. For example, if the load of normal control processing suddenly increases while retry is repeated, it may not be possible to keep the number of executions of control processing per unit time constant. . Therefore, by limiting the number of retries, it is possible to cope with such a sudden increase in processing load.

(Second Embodiment) In the second embodiment, the above-mentioned post-entry completion unit 17 determines the completion of post-entry when the collation of the post-entry data matches the designated number of times. It is. Therefore, since the configuration in the control unit is the same as that of the first embodiment, the description thereof is omitted.

Next, the operation of the second embodiment will be described.

FIG. 6 is a diagram showing the exchange of data between the respective units in the control units of the preceding system and the rear-entry system when the rear-entry system enters. In this figure,
The control processing execution unit 10, the internal data bus 20, and the data transmission unit 2 are omitted.

Here, a case will be described in which the number of times of performing the collation of the subsequent entry data is three.

FIG. 7 is a diagram showing an outline of a processing sequence according to the second embodiment.

The execution of the control processing 101, 102, 103
The occupation time of the process execution of the control process execution unit 10 in the preceding system is shown. In addition, after entry data transmission 141, 1
Reference numerals 42 and 143 denote the occupied time periods for the execution of the processes of the preceding system's post-entry monitoring unit 11, the post-entry data transmission unit 12, and the post-entry permission unit 13.

On the other hand, 131, 13
Reference numerals 2 and 133 denote the occupied time periods for the execution of the processes of the post-entry starting unit 14, the post-entry data receiving unit 15, the post-entry data collating and matching unit 16, and the post-entry completion unit 17, respectively. The executions 112 and 113 indicate the occupation time of the process execution of the control process execution unit 10 in the post-entry system.

In the above-described first embodiment, at the time when transmission of the post-entry data 141 and the transmission of the post-entry data 131 in FIG. 4 have been completed, the processing relating to the post-entry is terminated, and normal operation is started. Was.

In the second embodiment, the first entry data collating and matching unit 16 matches the entry data received from the preceding system with the internal data of the entry system, and the entry unit 17 completes the entry. , The fact that the matching has succeeded once is held as internal information. Thereafter, the preceding system executes the control processing 10
2 and the subsequent participant executes the control process execution 112. Thereafter, the post-entry completion unit 17 notifies the post-entry data receiving unit 15 that the first matching has been completed.

The post-entry data receiving section 15 further receives the post-entry data, and performs the second post-entry data collation / matching section 16 and the post-entry completion section 17 (the post-entry data transmission section 14).
(2) Execute post-entry data reception 132). that time,
If the matching is successful, the post-entry completion unit 17 holds that the matching has succeeded twice as internal information. Thereafter, the leading system executes the control process execution 103, and the subsequent system executes the control process execution 113.

Thereafter, the above processing is repeated once again, and the collation and matching of the back entry data are executed three times. Then, in the back entry completion unit 17, when the third matching is successful, the leading system is completed. Is notified via the data transmission unit 2 of the completion of the post-entry. Thereafter, the operation up to the start of the normal operation is the same as that of the first embodiment.

In the course of the three repetitions, if the internal data of the back-entry system and the preceding system fail to match due to transient noise from the outside, etc. Returns the information to 0 times and returns 1 when matching is succeeded next time
Start counting again. Then, when the matching is succeeded three times in succession, the post-entry process is terminated, and normal operation is started.

Next, the effect of the second embodiment will be described.

As described above, according to the second embodiment, without stopping the control processing of the control unit during operation, without considering whether there is a change in input information to the control unit, Since the stopped system can be started and subsequently entered into the multiplex system, a multiplex system that can maintain high reliability can be provided.

Further, since it is assumed that data matching is succeeded continuously for the specified number of times, even if the subsequent entry data is destroyed due to external transient noise or the like,
It is possible to match the internal data of the later entry system and the preceding system,
The security of the multiplex system of the present invention is improved.

The number of times data matching is specified can be determined according to the degree of security of the entire system and the frequency of failure to match internal data of the later entry system and the preceding system.

(Third Embodiment) In the third embodiment, post-entry data transmitted from the preceding system is specified in advance. Note that the configuration of the control unit is the same as that of the first embodiment, and a description thereof will be omitted.

FIG. 8 is a diagram showing an example of the post-entry data designation information according to the third embodiment.

The rear entry data specification information 4 specifies "position information" and "size information" for each unit of rear entry data (back entry data 1, rear entry data 2, ..., rear entry data k). It is a drawing which shows one example.

The subsequent entry data designation information is stored in a storage device (not shown) by each control unit 1 in all the systems. These "location information" and "size information"
2 shows the position and size of the subsequent entry data located in the internal data storage area 3 of the control unit 1 in the internal data storage area 3.

Next, the operation of the third embodiment will be described.

The preceding entry data transmission unit 12 (see FIG. 2, the same applies hereinafter) refers to the entry data designation information 4 held by the control unit 1 and transmits the data to the entry system after the entry. It reads out the entry data and transmits the entry data to the entry system via the data transmission unit 2.

The post-entry data receiving unit 15 of the post-entry system temporarily holds the post-entry data received from the preceding system. After that, the post-entry data collation and matching unit 16 of the post-entry system,
With reference to the post-entry data designation information 4 held by the control unit 1, the temporarily-entry post-entry data and the internal data of the post-entry system are compared and collated. Retain the data as internal data of the post-entry system.

Next, effects of the third embodiment will be described.

Depending on the system, there is a possibility that the amount of internal data of the control unit 1 becomes large and the amount of data transmitted and received as subsequent entry data becomes large. In that case, as shown in FIG. 9, the post-entry data transmission 141 and the post-entry data reception 1
There is a possibility that the occupation time of the control unit 31 becomes longer, and the number of times of execution of the control process per unit time is reduced.

In the third embodiment, by specifying the data to be transmitted as the post-entry data, the amount of the post-entry data passed from the preceding system to the post-entry system and collated and matched by the post-entry system is reduced. can do.

That is, as a large amount of data is transmitted as post-entry data, as shown in FIG.
Post-entry data transmission 141 etc. and post-entry data reception 131 etc.
Even if the occupation time of the first embodiment becomes long, this can be reduced to the extent shown in FIG. 4 in the first embodiment. As a result, the number of executions of the control processing per unit time can be kept constant. This is a particularly important requirement in a system that requires real-time properties.

Further, the time required for post-entry is also shortened. Therefore, the reliability of the entire multiplex system is improved.

FIG. 8 shows one method of designating the post-entry data, and the method is not limited to the illustrated one as long as it can refer to the storage area of the unit of the post-entry data. The same operation and effect can be obtained by other methods.

(Fourth Embodiment) In the fourth embodiment, post-entry data transmitted from the preceding system is divided into a certain size or smaller and transmitted. Note that the configuration of the control unit is the same as that of the first embodiment, and a description thereof will be omitted.

In the above-described first embodiment, as shown in FIG. 4, the transmission and reception of the back entry data is performed in one interval for executing the control processing. However, in the fourth embodiment, the rear entry data is transmitted and received. If the entry data is equal to or larger than the specified size, the data is divided into a plurality of blocks so as to be equal to or smaller than the specified size, the first block is transmitted, the control process is executed, and the second block is executed. Is transmitted, the control process is executed, and so on.

Next, the operation of the fourth embodiment will be described.

FIG. 10 is a diagram showing an outline of a processing sequence according to the fourth embodiment.

In this example, the back entry data is 3 blocks (back entry data 1, back entry data 2, and back entry data 3).
Is shown as an example.

The execution of the control processing 101, 102, 103
The occupation time of the execution of the process by the preceding control process execution unit 10 is shown. Also, after entry data transmission 141, 142,
Reference numeral 143 denotes the occupation time of the execution of the processing by the other system's post-entry monitoring unit 11, the post-entry data transmission unit 12, and the post-entry permission unit 13.

On the other hand, after entry data reception 131, 13
Reference numerals 2 and 133 denote the occupied time periods for the execution of the processes of the post-entry starting unit 14, the post-entry data receiving unit 15, the post-entry data collating and matching unit 16, and the post-entry completion unit 17, respectively. The executions 112 and 113 indicate the occupation time of the process execution of the control process execution unit 10 of the post-entry system.

That is, the first block (back entry data 1) is transmitted in the back entry data 1 transmission etc. 141 and the back entry data 1 reception etc. 131, and thereafter, the control processing execution 102 is performed for both the leading system and the back entry system. Do. Next, the second block (back entry data 2) is transmitted in the back entry data 2 transmission 12 and the back entry data 2 reception 132, and thereafter, the control processing execution 103 is performed for both the leading system and the back entry system. Finally, the third block (post-entry data 3) is transmitted, after which normal operation starts.

Next, effects of the fourth embodiment will be described.

In some systems, there is a possibility that the amount of internal data of the control unit 1 becomes large and the amount of data transmitted and received as subsequent entry data becomes large. In this case, when the transmission and reception of the post-entry data is performed in one interval, as shown in FIG.
There is a possibility that the occupation time of the control unit 31 becomes longer, and the number of times of execution of the control process per unit time is reduced.

In the fourth embodiment, the size of the post-entry data to be transmitted during one interval of the control process is set to be equal to or smaller than a certain size, thereby executing the control process per unit time as shown in FIG. Time can be kept constant. This is a particularly important requirement in a system that requires real-time properties.

When the fourth embodiment is applied to the second embodiment, it is assumed that the matching has succeeded once when the transmission and reception of all the divided blocks and the matching have been performed.

(Fifth Embodiment) In the fifth embodiment, the post-entry data transmitted from the preceding system is divided into a plurality of post-entry data units, and one of the divided units of data is divided. The data to be sent in each transmission is specified in advance. Note that the configuration of the control unit is the same as that of the first embodiment, and a description thereof will be omitted.

FIG. 12 is a diagram showing an example of post-entry data designation information according to the fifth embodiment.

The post-entry data designation information 5 includes “position information” for each unit of post-entry data (post-entry data 1, post-entry data 2,..., Post-entry data k) that has been divided in advance.
Specify "Size information" and "Send group". Thereafter, the entry data designation information is held by the control units 1 of all the systems. The “position information” and “size information” are, as described in the above-described third embodiment, the position of the subsequent entry data arranged in the internal data storage area of each control unit 1 in the internal data storage area. Shows the size.

Next, the operation of the fifth embodiment will be described.

The "transmission group" designates how to combine units of entry data that has been divided in advance and transmit the data in one time interval. For example, as shown in FIG. 12, after specifying the same numerical value as the “transmission group”, the unit of the entry data is transmitted simultaneously during one control process. For example, if the “transmission group” of the post-entry data 1 is specified as 1 and the “transmission group” of the post-entry data k is specified as 1, the post-entry data 1 and the post-entry data k are transmitted simultaneously. If there is another entry data for which the “transmission group” is designated as 1, it is also transmitted at the same time. Also, in this example,
Since the “transmission group” of the second entry data 2 is designated as 2,
It is transmitted during the control process different from the post-entry data 1 and the post-entry data k.

Next, effects of the fifth embodiment will be described.

First, by classifying the post-entry data, there is an effect that the number of executions of the control processing per unit time is kept constant.

Further, depending on the characteristics of the control processing, when data having high correlation with each other is transmitted in time for another control processing, it is repeated that even if one of the data is successfully matched, the other value is not matched. As a result, there is a possibility that a deadlock may occur in which it is not possible to achieve consistency of all subsequent entry data forever. In this regard, in the fifth embodiment, if the subsequent entry data specification information 5 is specified so that data having a high correlation is transmitted at the same time, data having a high correlation is coincident with the same control process. Can be
There is an effect that a deadlock does not occur as described above.

FIG. 12 is an example showing a method of referring to the storage area of the unit of the post-entry data and a method of specifying the group of the post-entry data. How to refer to the storage area, and
The same operation and effect can be obtained as long as the method can specify the group of the subsequent entry data.

(Sixth Embodiment) In the sixth embodiment, the post-entry data transmitted from the preceding system is divided into a plurality of post-entry data units, and one of the divided units of data is divided. The data to be transmitted in each transmission is specified in advance, and the transmission order is also specified. Note that the configuration of the control unit is the same as that of the first embodiment, and a description thereof will be omitted.

FIG. 13 is a diagram showing an example of the post-entry data designation information according to the sixth embodiment.

[0130] The back entry data designation information 6 includes "position information", "size information", and "transmission order" for each unit of the back entry data (back entry data 1, back entry data 2, ..., back entry data k). Is specified.

The subsequent entry data designation information is held by the control units 1 of all the systems. Further, as described in the third embodiment, the “position information” and “size information” indicate the position of the subsequent entry data located in the internal data storage area of each control unit 1 in the internal data storage area. Shows the size.

Next, the operation of the sixth embodiment will be described.

The “transmission order” specifies a group of post-entry data to be transmitted at the same time, and also specifies the transmission order. In the example of FIG. 13, after the same numerical value is designated, the entry data unit is transmitted simultaneously during one control process. In addition, for example, it is determined in advance that the group of subsequent entry data is transmitted in ascending numerical order. For example, the “transmission order” of the back entry data 1 is 1, and the “transmission order” of the back entry data k is 1
, The latter entry data 1 and the later entry data k are transmitted at the same time. In addition, it is transmitted during the first control process in which the process relating to the later entry data is started. If there is other entry data for which the “transmission order” is designated as 1, it is also transmitted at the same time. On the other hand, in this example, since the “transmission order” of the subsequent entry data 2 is designated as 2, the data is transmitted during the second control processing.

Next, the effect of the sixth embodiment will be described.

First, by dividing the post-entry data, there is an effect that the number of executions of the control processing per unit time is kept constant.

Further, depending on the characteristics of the control processing, if the matching is not performed first, there is a possibility that a deadlock occurs in which matching of all subsequent entry data cannot be realized forever. On the other hand, in the sixth embodiment, the order of matching can be specified, so that there is an effect that the above described deadlock does not occur.

Further, if data having a high influence on other data is matched at the beginning, the internal data of the succeeding system and the preceding system completely match before all the succeeding system data have been transmitted. Therefore, there is an effect that the processing load of matching is reduced.

FIG. 13 shows an example of a method of designating the post-entry data and a method of designating the group of the post-entry data and the transmission order. The same operation and effect can be obtained by a method other than the method shown in FIG. 13 as long as the method can specify the group of the entry data and the transmission order.

(Seventh Embodiment) In the seventh embodiment, the post-entry data transmitted from the preceding system is divided into a plurality of post-entry data units, and one of the divided units of data is divided. The data to be transmitted in each transmission is specified in advance, the transmission order is specified, and the post-entry data to be transmitted each time is specified. Note that the configuration of the control unit is the same as that of the first embodiment, and a description thereof will be omitted.

FIG. 14 is a diagram showing an example of the post-entry data designation information according to the seventh embodiment.

The rear entry data designation information 7 includes “position information”, “size information”, and “transmission” for each unit of rear entry data (back entry data 1, rear entry data 2,..., Rear entry data k). Order ”.

[0142] The subsequent entry data designation information is held by all the systems of the control unit 1 of the present embodiment. "Position information" and "size information" indicate the position and size of the subsequent entry data arranged in the internal data storage area of each control unit 1 in the internal data storage area as described in the third embodiment. I have.

Next, the operation of the seventh embodiment will be described.

The “transmission order” specifies a group of post-entry data to be transmitted at the same time, and also specifies the transmission order. Further, the post-entry data to be transmitted is specified every time the control process for transmitting the post-entry data is performed.

In the example of FIG. 14, the unit of the entry data after specifying the same numerical value is transmitted simultaneously during one control process. In addition, for example, it is determined in advance that the group of post-entry data is transmitted in ascending numerical order. Further, the post-entry data transmitted every time the control process for transmitting the post-entry data is transmitted includes information that indicates that the post-entry data is transmitted each time (FIG. 14).
Then, "Every time" is specified). For example, if the “transmission order” of the post-entry data 1 is specified as 1 and the “transmission order” of the post-entry data k is specified as 1, the post-entry data 1 and the post-entry data k are transmitted simultaneously.

Further, it is transmitted during the first control process in which the process relating to the later entry is started. If there is other entry data for which the “transmission order” is designated as 1, it is also transmitted at the same time. On the other hand, in this example, since the “transmission order” of the post-entry data 2 is specified as “every time”, the post-entry data 2 is always transmitted together when transmitting the post-entry data.

Next, effects of the present embodiment will be described.

First, dividing the subsequent entry data has the effect of keeping the number of executions of the control processing per unit time constant. Also, depending on the characteristics of the control process, the value changes each time the control process is performed, so if the subsequent entry data is divided and transmitted, it may fall into a deadlock where it is not possible to consistently match all the subsequent entry data There is. On the other hand, in the seventh embodiment, since the entry data after performing the matching process each time can be designated, there is an effect that the deadlock as described above does not occur.

FIG. 14 shows an example of a method of designating post-entry data, a method of designating a group of post-entry data, a transmission order, and a method of designating post-entry data to be transmitted each time. How to refer to the storage area of the unit of data,
If it is a method that can specify the group of post-entry data and the transmission order, and a method that can specify the post-entry data to be transmitted every time,
Similar functions and effects can be obtained by other methods than those shown in FIG.

(Eighth Embodiment) FIG. 15 shows the exchange of data between the control units of the preceding system and the rear entry system when the rear entry system enters in the eighth embodiment. FIG. Note that the configuration of the control unit is the same as that of the first embodiment, and a description thereof will be omitted. In FIG. 15, the control processing execution unit 10, the internal data bus 20, and the data transmission unit 2 are omitted.

In the eighth embodiment, when the own system is a post-entry system, the post-entry data receiving unit 15 sends a post-entry data request to the preceding system's post-entry data transmitting unit 12 by the data transmission unit 2.
, The transmission of the subsequent entry data is started.

Next, the operation of the eighth embodiment will be described.

Here, a case will be described in which the present embodiment is applied to the fifth, sixth, and seventh embodiments in which the subsequent entry data is divided into designated groups and transmitted.

As long as the rear entry data designating information can be held in both the rear entry system and the preceding system, these embodiments can be realized as described above. However, this is based on the assumption that the post-entry data information of the post-entry system and the post-entry data of the preceding system completely match.

In the case where the post-entry data information is added or deleted in the control unit to make the post-entry, the mutual management of the post-entry data transmitted between the preceding system and the rear-entry system is not performed correctly. there is a possibility.

Therefore, in the eighth embodiment, the pre-entry system is requested by notifying the post-entry data required by the post-entry system from the post-entry data receiving unit 15 as a post-entry data request. Subsequent entry data to data transmission unit 2
To send over. As a result, the post-entry system can correctly receive the post-entry data required by its own system,
Post-entry processing will be performed correctly.

Next, effects of the eighth embodiment will be described.

In the eighth embodiment, since data required by the back-entry system is requested, it is not necessary to always match the data of the back-entry system of all systems, and the addition of the back-entry system can be flexibly performed. Can be.

This is because, unless according to the eighth embodiment, in order to make the post-entry data information of all the systems coincide, it is necessary to temporarily stop the entire system and change the post-entry data information. In consideration of the fact that the reliability of the multiplex system is significantly deteriorated, the effect of the flexibility obtained by the eighth embodiment is apparent.

(Ninth Embodiment) FIG. 16 is a diagram showing the exchange of data between the control units of the preceding system and the rear-entry system in the case of the rear-entry system according to the ninth embodiment. FIG. Note that the configuration of the control unit is the same as that of the first embodiment, and a description thereof will be omitted. In FIG. 16, the control processing execution unit 10, the internal data bus 20, and the data transmission unit 2 are omitted.

Next, the operation of the ninth embodiment will be described.

In the ninth embodiment, when the post-entry data receiving section 15 of the post-entry system receives the post-entry data from the preceding system, the reception of the received data as an answer is regarded as an answer. Via the data transmission unit 2.

Next, effects of the ninth embodiment will be described.

According to the ninth embodiment, even if the transmission of the post-entry data fails due to a transient disturbance, it is determined by the preceding system that the transmission of the data transmitted by the preceding system has not been completed. I can judge. For this reason, an embodiment in which the preceding system that cannot receive an answer even after the elapse of a predetermined time transmits the same post-entry data again can be realized. As a result, there is an effect that the robustness of the process related to the post-entry of the multiplex system is improved.

In another embodiment, the post-entry system notifies the preceding system by including the received content in the answer, and the preceding system checks the answer content with the transmission content, and does not permit the rear entry if they do not match. According to this, the safety of the processing related to the post-entry is improved. As a result, there is an effect that the safety of the post-entry of the multiplex system is improved.

(Tenth Embodiment) In the tenth embodiment, the post-entry data receiving unit 15 selects and adopts from the post-entry data received from the preceding system via the data transmission unit 2. Things.

Next, the operation of the tenth embodiment will be described.

When entry data is received from a plurality of preceding systems, some of the entry data may be different from other entry data. This is the case, for example, when noise is added to data sent from some of the preceding systems due to a transient disturbance.

In such a case, it is necessary to determine which post-entry data is used to match the internal data.

[0170] From the received plurality of subsequent entry data,
As a method of selecting either, for example, a method of employing a majority among the received pre-entry post-entry data, or a method of receiving a pre-entry post-entry data that matches at least a predetermined comparison number among the received pre-entry post-entry data There is a method to adopt the post-entry data.

In the former method of employing the majority, for example, the rear entry data is compared in the order of reception from a plurality of preceding systems, the number of the same rear entry data is counted, and the largest rear entry data is adopted. Will do. Therefore, in this case, it is necessary to compare all the entry data after receiving.

On the other hand, in the latter method of adopting subsequent entry data that matches at least a predetermined comparison number, for example,
By defining “2” as the number of comparisons and comparing the subsequent entry data in the order in which they were received, when the two subsequent entry data match, the comparison and collation ends, and the two are the same. After that, the entry data may be adopted.

FIG. 17 is a diagram for explaining this method more specifically, and is a diagram showing an example of an area for storing one of the post-entry data received by the rear-entry system from the preceding system.

FIG. 17 shows an example in which data = 1 from the preceding system 2, data = 3 from the preceding system 4, data = 1 from the preceding system 1, and data = 1 from the preceding system 3 in this order. I have. In this example, assuming that the predetermined number is “2” as described above, the subsequent entry data = 1 can be adopted at the time when the subsequent entry data is received from the preceding system 1 and compared and compared.

In this example, an example is shown in which subsequent entry data is compared in the order in which they are received. In addition, for example, in a system that simultaneously receives subsequent entry data from a plurality of preceding systems,
There is also a method of comparing the subsequent entry data in ascending order using the identification number assigned to the preceding system.

FIG. 18 is a diagram for explaining a specific example in such a case, and is a diagram showing an example of a storage area for received post-entry data in the post-entry system. Here, the entry data received from the preceding system is stored in the order of the identification numbers assigned to the preceding system.

FIG. 18 shows a state in which data = 1 from the preceding system 1, data = 1 from the preceding system 2, data = 1 from the preceding system 3, and data = 3 from the preceding system 4.

When this is compared and collated in the order in which it is arranged, when the number of comparisons is set to “2” as in the above case, the time when the subsequent entry data from the preceding system 1 and the subsequent entry data from the preceding system 2 are compared and collated. Can adopt data = 1.

The predetermined number of comparisons may be determined according to the degree of disturbance. For example, when the number of disturbances is small, even if the number of comparisons is small, the data matches well with a plurality of preceding systems. If there is a high possibility that noise will be added to the subsequent entry data, the influence of disturbance can be reduced by increasing the predetermined number of comparisons.

Next, the effects of the tenth embodiment will be described.

According to the tenth embodiment, after the post-entry data to be adopted is determined, there is no need to perform the comparison and collation processing of the post-entry data, which has the effect of reducing the processing load on the system. In addition, even if data different from that of other predecessors is received from some predecessors due to a transient disturbance, the post-entry data used for matching can be specified, and the robustness of the post-entry processing can be determined. The performance is improved.

[0182]

As described above, according to the present invention, the processing of the control unit in the operating system is not stopped, and there is no need to consider whether there is a change in the input information to the control unit. In addition, it is possible to start the stopped system and to re-enter the multiplex system, thereby providing a multiplex system capable of maintaining high reliability and capable of re-entry. In addition, this eliminates the need for monitoring the operation state of the control target,
Furthermore, even if the state change of the controlled object during the later entry occurs,
The processing results of the preceding system and the post-entry system do not become inconsistent, and the multiplex system operates normally even after the post-entry.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the overall configuration of a multiplex system according to the present invention.

FIG. 2 is a block diagram illustrating a configuration of a control unit according to the present invention.

FIG. 3 is a diagram showing an outline of processing contents in a state where there is no back-entry system in the control unit of the present invention.

FIG. 4 is a drawing showing an outline of a processing sequence in the first embodiment of the present invention.

FIG. 5 is a diagram showing exchange of data between each unit of a preceding system and a subsequent system when there is a subsequent system in the first embodiment of the present invention.

FIG. 6 is a diagram showing exchange of data between respective components of a preceding system and a rear-entry system when there is a rear-entry system according to the second embodiment of the present invention.

FIG. 7 is a diagram illustrating an outline of a processing sequence according to a second embodiment of the present invention.

FIG. 8 is a diagram illustrating an example of post-entry data designation information according to the third embodiment of this invention.

FIG. 9 is a drawing for explaining effects of the third embodiment of the present invention.

FIG. 10 is a diagram illustrating an outline of a processing sequence according to a fourth embodiment of the present invention.

FIG. 11 is a view for explaining effects of the fourth embodiment of the present invention.

FIG. 12 is a diagram illustrating an example of post-entry data designation information according to the fifth embodiment of the present invention.

FIG. 13 is a diagram illustrating an example of post-entry data designation information according to the sixth embodiment of this invention.

FIG. 14 is a diagram illustrating an example of post-entry data designation information according to the seventh embodiment of this invention.

FIG. 15 is a diagram showing exchange of data between respective parts of a preceding system and a rear-entry system when there is a latter-entry in the eighth embodiment of the present invention.

FIG. 16 is a diagram showing exchange of data between respective parts of a preceding system and a rear-entry system when there is a latter-entry in the ninth embodiment of the present invention.

FIG. 17 is a diagram illustrating an example of post-entry data received by a back-entry system from a preceding system according to the tenth embodiment of the present invention.

FIG. 18 is a diagram illustrating an example of post-entry data received by a back-entry system from a preceding system in the tenth embodiment of the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 control unit 2 data transmission unit 3 internal data storage area 4, 5, 6, 7 example of post-entry data designation information 10 control processing execution unit 11 other system post-entry monitoring unit 12 post-entry data transmission unit 13 post-entry permission unit 14 Back entry start unit 15 Back entry data reception unit 16 Back entry data collation / matching unit 17 Back entry completion unit 101, 102, 103 Occupation time of control processing execution in the preceding system 112, 113 Occupation of control processing execution in the back entry system Time 131, 132, 133 Occupancy time for post-entry data reception, etc. 141, 142, 143 Occupation time for post-entry data transmission, etc.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tomohiro Okano 2-6-6 Yoyogi, Shibuya-ku, Tokyo East Japan Railway Company (72) Inventor Yoichi Konno 1 Toshiba-cho, Fuchu-shi, Tokyo Toshiba Fuchu Works (72) Inventor Masataka Kono 1 Toshiba-cho, Fuchu-shi, Tokyo Toshiba Fuchu Works F-term (reference) 5B034 AA04 CC01 DD02 DD06 5B045 BB01 BB28 BB43 BB49 BB58 JJ26 5H209 AA09 HH26 SS02 SS04 TT01

Claims (12)

[Claims] In a multiplex system composed of a plurality of systems, a control processing execution means for executing control processing in the own system, a post-entry monitoring means for monitoring activation of a post-entry system, When the monitoring means detects the activation of the post-entry system, the post-entry data transmission means for transmitting post-entry data necessary for the post-entry to the post-entry system, and when the own system is the predecessor, the post-entry system A post-entry permission means for receiving a post-entry completion signal from the system and notifying the post-entry system of the post-entry permission, and judging that the own system is a post-entry system from the operation status of the other system,
Notifying the preceding system of the post-entry, and post-entry start means for starting the post-entry processing, and starting the post-entry processing by the post-entry start means, the post-entry data receiving means for receiving the post-entry data, A post-entry data comparison / matching unit that checks the post-entry data received by the post-entry data receiving unit with internal data in the own system and matches the data if they do not match, By matching the data by the matching means, the completion of the post-entry is notified to the preceding system, and a post-entry permission signal is received from the post-entry permission means of the preceding system, and the control processing execution means is received. And a post-entry completion means for causing the control system to start control processing. 2. The post-entry completion means, when the post-entry permission notification cannot be received, notifies the post-entry start means again of the post-entry to the preceding system and executes post-entry processing. The multiplex system according to claim 1, wherein a command is issued to start. 3. The multiplexing method according to claim 2, wherein the post-entry completion means stops processing in the post-entry system when the notification of the post-entry permission cannot be received a predetermined number of times. System. 4. The post-entry completion means determines that the post-entry is completed when the post-entry data matching and matching means matches the post-entry data with a specified number of times. 3. The multiplex system according to any one of 3. 5. The multiplex system according to claim 1, wherein said post-entry data transmitting means transmits data specified in advance as said post-entry data. 6. The multiplex system according to claim 1, wherein said post-entry data transmitting unit divides the post-entry data into a predetermined size or less and transmits the data. 7. The post-entry data transmitting means divides the post-entry data to be transmitted into a plurality of post-entry data units,
The unit designated among the units of the plurality of subsequent entry data is transmitted as a group.
The multiplex system according to any one of the above. 8. The multiplex system according to claim 7, wherein said subsequent entry data transmitting means transmits said group in a specified transmission order. 9. The multiplex system according to claim 1, wherein said post-entry data transmitting means transmits post-entry data designated to be transmitted each time. 10. The post-entry data receiving means requests post-entry data from a preceding system, and the post-entry data transmitting means transmits the post-entry data in response to a request for post-entry data from a post-entry system. The multiplex system according to any one of claims 1 to 9, wherein the transmission is performed. 11. The multiplexing method according to claim 1, wherein said post-entry data receiving means transmits, as an answer, the reception of the post-entry data to a preceding system. System. 12. The post-entry data receiving means selects the post-entry data to be used for matching with the internal data from the plurality of received post-entry data. The multiplex system according to any one of the above.