JP2006003985A - Multiplex system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multiplex system for completing post-entering in real time by additionally transmitting only the post-enter data which have been changed from the preceding system to the post-entering system even when the amounts of post-enter data are increased. <P>SOLUTION: This multiplex system constituted of a plurality of systems is provided with another system post-monitoring part 11, a post-entering data transmitting part 12, a post-entering permitting part 13, a post-entering starting part 14, a post-entering data receiving part 15, a post-entering data collation and matching part 16, and a post-entering completing part 17. The post-entering data transmitting part 12 transmits all the post-entering data, and then transmits only the changed section of the post-enter data from the preceding system to the post-entering system. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a multiplex system that increases reliability by providing a plurality of identical systems.

  In general, a multiplex system is used for a system that requires very high reliability, such as an ATC (Automatic Train Control) system of a railway or an air traffic control system. A multi-system is usually a system having a plurality of control units that are identical or partially different but have substantially the same function.

  In such a multi-system, for example, when there is a failure in a certain system, or when a new system is added to improve the multi-system, the operation of the stopped system is started. It is necessary to resume driving after taking

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

  (1) After all the systems of the control unit in operation are stopped, 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.

This is done without stopping the processing of the control unit in the operating system and without considering the change in the input information to the control unit, and starting the stopped system to the multi-system. A multiplex system that can be entered has been proposed (see, for example, Patent Document 1).
JP 2002-304307 A

  However, when dividing a large amount of post-entry data and transmitting it over multiple control cycles, not only does it take a long time to complete the post-entry after the post-entry data verification / matching is completed, In the worst case, a change in post-entry data occurs intermittently, which may cause a problem that the post-entry does not complete in a finite time. If the later entry is not completed, the reliability is lowered accordingly, which is not desirable in a multiplex system that requires high reliability.

  An object of the present invention is to provide a multiplex system that can maintain high reliability and can complete the post-entry in a realistic time even when the amount of post-entry data becomes large.

  A multi-system system according to an aspect of the present invention includes a control processing execution unit that executes control processing in its own system, another system post-monitoring unit that monitors that a post-entry system is activated, and the post-entry monitoring unit However, when it detects the start of the post-entry system, the post-entry data transmission means for transmitting the post-entry data necessary for the post-entry to the post-entry system, and when the own system is the predecessor system, Receiving the signal of completion of the next entry and notifying the later entry system of the later entry permission, and judging that the own system is the later entry system from the operating status of the other system, The post-entry start means for starting the post-entry process and the post-entry data receiving means for receiving the post-entry data by the start of the post-entry process by the post-entry start means and the post-entry data receiving means The received post-entry data received inside the system Data is matched by the post-entry data collation / matching means for matching the data in the case of mismatch, and the post-entry is completed by matching the data by the post-entry data collation / matching means. In a multiplex system having a post-entry completion means for notifying the preceding system and receiving a post-entry permission signal from the post-entry permission means of the preceding system and starting the control processing in the control processing execution means, The post-entry data transmission means is configured to transmit only the changed part of the post-entry data from the preceding system to the post-entry system after transmitting all the post-entry data.

  Therefore, according to the present invention, in the preceding system that has been driven first, the post-entry monitoring means monitors the post-entry system that is activated later, and detects the activation of the post-entry system. The transmission means transmits the post-entry data necessary for the post-entry to the post-entry system, and the post-entry permission means receives a signal indicating the completion of the post-entry from the post-entry system and notifies the post-entry system of the post-entry permission.

  In addition, in the post-entry system started later, the post-entry start means determines that the own system is a post-entry system from the operating state of the other system and notifies the pre-entry system of the post-entry, and Process for receiving and receiving post-entry data transmitted from the preceding system's post-entry data transmitting means, and the post-entry data received by the post-entry data collating / matching means for the internal data in the own system By matching the data in the case of mismatch, the internal data of the preceding system and the subsequent entry system are matched, and the subsequent entry completion means notifies the preceding system that the subsequent entry has been completed and the preceding system By receiving a post-entry permission signal from the post-entry permitting means and starting the control processing by the control processing executing means, it is understood that the post-entry has been completed in both the preceding system and the post-entry system Allows you to advance and drive Without stopping the control process, to enter the multiple systems to start the post-entry system.

  Furthermore, since the post-entry data transmitting means transmits all the post-entry data, only the changed part of the post-entry data is transmitted from the preceding system to the post-entry system. Even in this case, the post-entry can be completed in a realistic time by additionally transmitting only the post-entry data after the change from the predecessor to the post-entry.

  According to the present invention, the stopped system is activated to the multi-system without stopping the control processing of the controller during operation and without considering the change of input information to the controller. High reliability can be maintained by entering later, and even if the amount of later entry data becomes large, it is realistic to send only after entry data that has changed from the previous system to the subsequent system. It is possible to provide a multi-system that completes later entry in a short time.

  Embodiments of the present invention will be described below with reference to the drawings.

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

  This multiple system includes a plurality of systems from the first system to the 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. The functions and operations of each control unit 1 are all the same, and each system having this control unit 1 transmits and receives data to and from other systems via the data transmission unit 2 to improve reliability as a whole. A multi-system for this purpose.

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

  The control unit 1 is roughly divided into a normal operation part 51 that operates during normal operation, a preceding system part 52 that operates when there is a later entry when the own system is operating as a preceding system, and the own system. Divides into the post-entry part 53 which operates when it enters later.

  The normal operation part 51 includes a control process execution unit 10 that performs control processing, and another system post-entry monitoring unit 11 that monitors, via the data transmission unit 2, that the control unit 1 other than its own system is started as a post-entry system. And consist of

  The preceding system portion 52 has a function of transmitting the subsequent entry data necessary for the subsequent entry to the subsequent entry system via the data transmission unit 2 when the own system is an operating preceding system. After the transmission, the post-entry data transmission unit 12 having a function of transmitting only the changed part of the post-entry data from the predecessor system to the post-entry system, and the data from the post-entry system when the own system is the predecessor system A post-entry permission unit 13 that receives a signal of completion of the subsequent entry via the transmission unit 2 and notifies the post-entry permission to the post-entry system via the data transmission unit 2.

  The post-entry system part 53 determines that the own system is a post-entry system from the operating state of the other control unit 1 via the data transmission unit 2 and starts the process for the post-entry and Then, as determined by the post-entry start unit 14, when the own system is the post-entry system, the post-entry data receiving unit 15 that receives the post-entry data via the data transmission unit 2 and the post-entry data received from the preceding system The data is collated with internal data in the system, and the data is determined by the post-entry data collation / matching unit 16 that matches the data when there is a mismatch, and the fact that the post-entry has been completed when the local system is the post-entry system And a post-entry completion unit 17 for notifying completion of the post-entry to the preceding system via the transmission unit 2.

  Each of the above units in the control unit 1 is connected to the data transmission unit 2 by an internal data bus 20, and transmits / receives data to / from another system.

  Here, the predecessor system refers to a control unit system that is already operating as a multiplex system, and the post-entry system refers to a control unit system that has been started later on a system that is already operating. Point to.

  Next, the operation of this embodiment will be described.

  First, the operation of the control unit 1 during normal operation, that is, a state where there is no subsequent entry system will be described.

  FIG. 3 is a diagram showing an outline of 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 in operation.

  During normal operation, the control processing execution unit 10 that performs control processing is periodically started in each control unit 1. The other system post-entry monitoring unit 11 is also periodically activated, and monitors that the control unit 1 other than the own system is activated as the post-entry system via the data transmission unit 2. In the normal state, only the control process execution unit 10 and the other system post-entry monitoring unit 11 are operating as described above.

  Next, processing contents when a later entry system enters will be described.

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

  In FIG. 4, control process executions 101 and 102 indicate the occupation time of the process execution of the control process execution unit 10 in the preceding system as time advances. Similarly, the post-entry data transmission etc. 141 indicates the occupation time of processing execution of the preceding system's other 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 post-entry system is activated, and the post-entry data reception 131 or the like is the post-entry system post-entry start unit 14, the post-entry data reception unit 15, and the post-entry data collation. The occupancy time of the process execution of the matching unit 16 and the post-entry completion unit 17 is shown, and the control process execution 112 shows the occupancy time of the process execution of the control process execution unit 10 in the post-entry system.

  FIG. 5 is a diagram showing exchange of data of each unit in the control unit of each of the preceding system and the following system when a subsequent system enters. In this figure, the control processing execution unit 10, the internal data bus 20, and the data transmission unit 2 are omitted.

  First, when the control unit 1 that has been entered later is activated while the preceding system is normally operating, the subsequent entry start unit 14 in the activated control unit 1 is connected to another control unit 1 via the data transmission unit 2. It judges that the own system is a post-entry system from the driving state, and starts processing for the post-entry. At that time, the post-entry system notifies the pre-system via the data transmission unit 2 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 is activated, the state of the post-entry system Is stored as inside information. Thereafter, the predecessor system uses the internal information of the other system post-entry monitoring unit 11 to be changed to “being entered later” as a trigger, and in the post-entry data transmission etc. 141, the post-entry acceptance is transferred to the post-entry system. And the post-entry data transmission unit 12 is activated.

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

  Thereafter, the post-entry data transmission unit 12 of the preceding system transmits data necessary for the subsequent entry (post-entry data) among the internal data of the control unit 1 to the post-entry system via the data transmission unit 2.

  The post-entry data receiving unit 15 receives the post-entry data sent from the preceding system via the data transmission unit 2 and temporarily holds it. Then, in the post-entry system, the post-entry data collation / matching unit 16 is activated, and the post-entry data received from the pre-system and temporarily held is compared with the internal data of the post-entry system, In case of disagreement, the later entry data is stored as internal data of the later entry system.

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

  In the subsequent entry system, after the data is matched by the subsequent entry data matching / matching unit 16, the subsequent entry completion unit 17 is activated to notify the preceding system of the completion of the subsequent entry via the data transmission unit 2. .

  In the predecessor system, when the post-entry permission unit 13 is activated and a post-entry completion notification is received from the post-entry system, the post-entry permission is notified to the post-entry system via the data transmission unit 2. As a result, it is possible to grasp that the subsequent entry has been completed in both the preceding system and the subsequent system.

  Therefore, in the preceding system, when the notification of the completion of the subsequent entry is received, the internal information that has been set to “being entered later” in the other-system subsequent entry monitoring unit 11 is replaced with information indicating that “being in operation”. On the other hand, in the post-entry system, when the post-entry completion unit 17 receives a post-entry permission notification from the preceding system, the process related to the post-entry ends, and the control process execution unit 10 starts normal operation. Send a signal.

  Thus, the process up to the subsequent entry data transmission 141 and the subsequent entry data reception 131 in FIG. 4 is completed. Thereafter, execution of the control processing executions 102 and 112 is started in each of the preceding system and the subsequent entry system, and the processing contents in the normal operation state without the subsequent entry system shown in FIG. 3 are periodically executed. .

  For the purpose of maintaining high reliability, the above operation is a system that has been stopped without stopping the control processing of the control unit during operation and without considering the change of input information to the control unit. In the post-entry data transmission unit 12, the post-entry data that is necessary for the post-entry to the post-entry system is stored in the post-entry data transmission unit 12 when the own system is a preceding system that is already in operation. A function of transmitting via the transmission unit 2 is used.

  Next, another function of the post-entry data transmission unit 12, that is, after all the post-entry data is transmitted, the function of transmitting only the changed part of the post-entry data from the preceding system to the post-entry system As an example of completing post-entry in a realistic time even when the amount of data becomes large, an example in which post-entry data is divided into three and transmitted over three control cycles will be described with reference to FIGS. 6 and 7. To do.

  First, an example in which there is no change in the post-entry data will be described with reference to FIG. In the case of this example, all the subsequent entry data coincide with each other in the third control cycle, and the subsequent entry is completed.

  In FIG. 6, a portion surrounded by a square represents a storage area for entry data after division.

  The post-entry process is started, and as the first control cycle, the post-entry data 1 is transmitted to the post-entry system from the post-entry data 1, the post-entry data 2, and the post-entry data 3 as the first control cycle, and others are indefinite values. . Next, as the second control cycle, the post-entry data 2 is transmitted to the post-entry system from the post-entry data 1, the post-entry data 2, and the post-entry data 3 of the preceding system, and the others are indefinite values. As the third control cycle, the post-entry data 3 is transmitted to the post-entry system from the post-entry data 1, the post-entry data 2, and the post-entry data 3, and the others are indefinite values.

  Next, an example in which the post-entry data of another part changes while the post-split entry data is transmitted will be described with reference to FIG. In this case, after dividing the entry data into three parts and transmitting them over three control cycles, only the changed data is transmitted in the subsequent control cycles.

  In FIG. 7, a black square mark indicates a data portion that has changed.

  The post-entry process is started, and as the first control cycle, the post-entry data 1 is transmitted to the post-entry system from the post-entry data 1, the post-entry data 2, and the post-entry data 3 as the first control cycle, and others are indefinite values. . Next, as the second control cycle, the post-entry data 2 is transmitted to the post-entry system from the post-entry data 1, the post-entry data 2, and the post-entry data 3 of the preceding system, and the others are indefinite values. At this time, a part of the post-entry data 1 has changed. As the third control cycle, the post-entry data 3 is transmitted to the post-entry system from the post-entry data 1, the post-entry data 2, and the post-entry data 3, and the others are indefinite values. At this time, a part of the post-entry data 1 has changed.

  Next, as the fourth control cycle, the portion that has changed in the preceding entry after entry data 1 and 2 is first transmitted to the entry entry system. As a fifth control cycle, the part that has changed in the preceding entry after entry data 3 is first transmitted to the entry system.

  As described above, after the entry data after being divided into three is transmitted over three control cycles, in the subsequent control cycles, only the data that has changed is transmitted, so even if the amount of subsequent entry data becomes large, the change does not occur. By sending only the later entry data from the preceding system to the later entry system, the later entry can be completed in a realistic time.

  As described above, according to the first embodiment, the system that has been stopped without considering the control processing of the control unit during operation and without considering the change in the input information to the control unit. Can be entered later into the multi-system, so that high reliability as a multi-system can be maintained. In addition, even when there is a large amount of post-entry data, it is possible to complete the post-entry in a realistic time by transmitting only the post-entry data after the change from the predecessor to the post-entry system. .

  As the first embodiment, in addition to the processing forms described above, for example, when the back-entry start unit 14 cannot receive a post-entry acceptance notification from the predecessor system, the post-entry system process is retried from the time of startup. You may make it do.

  Here, as the definition when the notification of the post-entry acceptance cannot be received, for example, the worst required time until the post-entry start after the post-entry start unit 14 sends the post-entry start in advance is received in advance. If you specify yourself as a result of analysis or measurement and you cannot receive a post-entry acceptance notification even after the specified time has elapsed, or if the processing unit operates in a fixed-cycle execution, the post-entry system Even if the number of cycles determined as a result of analyzing or measuring the worst required period from when the post-entry start unit 14 transmits the post-entry start to the reception of the post-entry acceptance, This is a case in which the notification of the subsequent entry acceptance cannot be received.

  In these cases, it is possible to improve the robustness of the process related to the subsequent entry by retrying the process of the subsequent entry system from the time of activation.

  Moreover, as another processing form, when the back-entry start unit 14 of the back-entry system cannot receive the notification of the back-entry acceptance from the preceding system, it repeatedly fails the specified number of times by repeating the retry of the back-entry process. In this case, the post-entry system may be stopped.

  This is because the state itself that repeats the retry of the process of the subsequent entry system is an abnormal state in the first place. By repeating the retry for the process related to the subsequent entry, the processing load of the entire multi-system is increased. Is not appropriate. For example, if the load of normal control processing suddenly increases while repeating retries, it may be impossible to keep the number of executions of control processing per unit time constant. .

  Therefore, by limiting the number of retries, a sudden increase in processing load can be dealt with. Moreover, as another processing form, when the post-entry completion unit 17 of the post-entry system cannot receive the post-entry permission notification from the pre-system, the post-entry is again notified to the pre-entry system to the post-entry start unit 14 At the same time, the post-entry process may be retried from the start-up time by instructing to start the post-entry process.

  Here, as a definition when the notification of the post-entry permission cannot be received, for example, the worst required time until the post-entry completion unit 17 transmits the post-entry completion in advance after receiving the post-entry completion in advance. If you have specified yourself as a result of analyzing or measuring and you cannot receive a post-entry permission notification even after the specified time has elapsed, or if the processing unit operates in a fixed-cycle execution, Even if the number of cycles determined as a result of analyzing or measuring the worst required cycle from when the system's post-entry completion unit 17 transmits the post-entry to receiving the post-entry permission, This is a case in which the notification of the subsequent entry acceptance cannot be received.

  In these cases, it is possible to improve the robustness of the process related to the subsequent entry by retrying the process of the subsequent entry system from the time of activation.

  Furthermore, as another processing form, when the back-entry completion unit 17 cannot receive a post-entry permission notification from the preceding system, it repeatedly retries the processing of the back-entry system and fails continuously for the specified number of times. In this case, the post-entry system may be stopped.

  This is because the state itself that repeats the retry of the process of the subsequent entry system is abnormal in the first place, so by repeating the retry for the process related to the subsequent entry, the processing load of the entire multiplex system is increased. Is not appropriate. For example, if the load of normal control processing suddenly increases while repeating retries, it may be impossible 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, post-entry data to be transmitted from the preceding system is designated in advance. Since the configuration of the control unit is the same as that of the first embodiment described above, description thereof is omitted.

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

  The back entry data designation information 4 is an example in which “location information” and “size information” are designated for each back entry data unit (back entry data 1, back entry data 2,..., Back entry data k). It is drawing which shows.

  The entry data designation information thereafter is stored in a storage device (not shown) by each control unit 1 in all systems. These “position information” and “size information” indicate the position and size of the later entry data arranged in the internal data storage area 3 of the control unit 1 in the internal data storage area 3.

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

  The subsequent entry data transmission unit 12 (see FIG. 2, the same applies hereinafter) of the preceding system refers to the subsequent entry data designation information 4 held by the control unit 1 and determines the later entry data to be transmitted to the subsequent entry system. Read and transmit the post-entry data to the post-entry system via the data transmission unit 2.

  The post-entry data receiving unit 15 for the post-entry system temporarily holds the post-entry data received from the preceding system. Thereafter, the post-entry data collation / matching unit 16 refers to the post-entry data designation information 4 held by the control unit 1 and temporarily stores the post-entry data and the post-entry data. The internal data of the entry system is compared and collated, and in the case of a mismatch, the post-entry data is retained as the internal data of the post-entry system.

  Next, effects of the second 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 to be transmitted and received as post-entry data becomes large. In this case, as shown in FIG. 9, the occupation time of the subsequent entry data transmission 141 and the subsequent entry data reception 131 becomes longer, and the number of executions of the control processing per unit time may be reduced.

  In the second embodiment, by specifying the data to be transmitted as the subsequent entry data, it is possible to reduce the amount of the subsequent entry data that is transferred from the preceding system to the subsequent entry system and collated and matched in the subsequent entry system.

  That is, even when the occupation time of the post-entry data transmission 141 and the post-entry data reception 131 becomes longer as shown in FIG. In the first embodiment, it can be shortened to the extent shown in FIG. As a result, the number of executions of the control process per unit time can be kept constant. This is a particularly important requirement in a system that requires real-time performance.

  In addition, the time required for subsequent entry is shortened. Therefore, the reliability of the entire multiplex system is improved.

  Note that FIG. 8 shows one of the methods for specifying the subsequent entry data, and is not limited to the illustrated example as long as the storage area in the unit of the subsequent entry data can be referred to. Even if it is a method, the same effect | action and effect are acquired.

(Third embodiment)
In the third embodiment, the post-entry data transmitted from the preceding system is divided into a predetermined size and transmitted. Note that the configuration of the control unit is the same as that of the first embodiment described above, and therefore description thereof is omitted.

  In the first embodiment described above, as shown in FIG. 4, the post-entry data is transmitted and received in a single interval for executing the control process. However, in the fourth embodiment, the post-entry data is designated. If the size is greater than or equal to the size, the block is divided into a plurality of blocks so that the size is equal to or less than the specified size, the first block is transmitted, the control process is executed, the second block is transmitted, and then the control is performed. Execute the process and repeat that.

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

  FIG. 10 is a diagram showing an outline of a processing sequence in the third embodiment.

  In this example, the case where the back-entry data is divided into 3 blocks (back-entry data 1, back-entry data 2, and back-entry data 3) is shown as an example.

  The control process executions 101, 102, and 103 indicate the occupation time of the process execution of the preceding control process execution unit 10. Further, post-entry data transmission, etc. 141, 142, and 143 indicate occupancy times of processing execution of the preceding system's other post-entry monitoring unit 11, the post-entry data transmitting unit 12, and the post-entry permitting unit 13.

  On the other hand, the post-entry data reception 131, 132, 133 is the process execution of the post-entry start part 14, the post-entry data receiver 15, the post-entry data collation / matching part 16, and the post-entry completion part 17. The occupation time is shown, and the control process executions 112 and 113 show the occupation time of the process execution of the control process execution unit 10 of the subsequent entry system.

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

  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 to be transmitted and received as post-entry data becomes large. In that case, when the post-entry data is transmitted and received in a single interval, as shown in FIG. 11, the occupied time of the post-entry data transmission 141 and the post-entry data reception 131 becomes longer, and the control processing per unit time There is a possibility that the number of executions of.

  In the third embodiment, the execution time of the control process per unit time is made constant as shown in FIG. 10 by making the post-entry data transmitted per interval of the control process below a certain size. It becomes possible to keep. This is a particularly important requirement in a system that requires real-time performance.

(Fourth embodiment)
In the fourth embodiment, the post-entry data transmitted from the preceding system is divided into a plurality of units of post-entry data, and the data to be sent in one transmission is designated in advance among the divided units of data. Is. Since the configuration of the control unit is the same as that of the first embodiment described above, description thereof is omitted.

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

  The post-entry data designation information 5 is “position information”, “size information”, and “transmission group” for each unit of post-entry data (post-entry data 1, post-entry data 2..., Post-entry data k) divided in advance. Is specified. Thereafter, the entry data designation information is held by the control units 1 of all systems. As for “position information” and “size information”, 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 fourth embodiment will be described.

  The “transmission group” is used to specify how the units of the entry data that have been divided in advance are combined and transmitted in a single interval. For example, as shown in FIG. 12, the unit of the entry data after specifying the same numerical value as the “transmission group” is transmitted simultaneously during one control process. For example, if the “transmission group” of the post-entry data 1 is 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. In addition, if there is post-entry data for which “transmission group” is designated as 1, it is also transmitted at the same time. Further, in this example, since the “transmission group” of the subsequent entry data 2 is designated as 2, transmission is performed in the middle of the control process different from the subsequent entry data 1 and the subsequent entry data k.

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

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

  Also, depending on the characteristics of the control process, when data with high correlation with each other is transmitted in the middle of another control process, the value of the other will not match even if it succeeds in matching one another. There is a possibility of falling into a deadlock in which it is not possible to achieve matching of all subsequent entry data. In that respect, in the fourth embodiment, if the post-entry data designation information 5 is designated so that highly correlated data is transmitted at the same time, the highly correlated data is matched in the same control process. Therefore, there is an effect that the deadlock does not occur as described above.

  FIG. 12 is an example showing a method of referring to a storage area in units of subsequent entry data and a method of specifying a group of subsequent entry data. If it is a method that can be referred to and a method that can specify a group of post-entry data, the same actions and effects can be obtained.

(Fifth embodiment)
In the fifth embodiment, the post-entry data transmitted from the preceding system is divided into a plurality of units of post-entry data, and data to be sent in one transmission is designated in advance among the data of the divided units. At the same time, the order of transmission is also specified. Since the configuration of the control unit is the same as that of the first embodiment described above, description thereof is omitted.

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

  The post-entry data designation information 6 designates “location information”, “size information”, and “transmission order” for each unit of post-entry data (post-entry data 1, post-entry data 2,..., Post-entry data k). To do.

  Thereafter, the entry data designation information is held by the control units 1 of all systems. As for “position information” and “size information”, as described in the second 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.

  “Transmission order” specifies a group of post-entry data to be transmitted at the same time and also specifies the order of transmission. In the example of FIG. 13, the entry data unit after designating the same numerical value is transmitted simultaneously in the middle of one control process. Further, for example, it is determined in advance that a group of post-entry data is transmitted in ascending order of numerical values. For example, if the “transmission order” of the post-entry data 1 is 1 and the “transmission order” of the post-entry data k is 1, the post-entry data 1 and the post-entry data k are transmitted simultaneously. In addition, it is transmitted during the first control process when the process related to the later entry data is started. In addition, if there is post-entry data whose “transmission order” is specified as 1, it is also transmitted at the same time. On the other hand, since the “transmission order” of the post-entry data 2 is specified as 2 in this example, the data is transmitted in the second control process.

  Next, effects of the fifth exemplary embodiment will be described.

  First, dividing the post-entry data has an effect of keeping the number of executions of the control processing per unit time constant.

  Also, depending on the characteristics of the control processing, there is a possibility of falling into a deadlock in which it is not possible to realize matching of all subsequent entry data unless matching is performed first. In that respect, in the fifth embodiment, since the matching processing order can be specified, there is an effect that the deadlock described above is not caused.

  Furthermore, if the data that has a high influence on other data is matched first, the internal data of the back-entry system and the preceding system will completely match before the transmission of all back-entry data is completed. This has the effect of reducing the processing load.

  FIG. 13 shows one example of the method of specifying the subsequent entry data, the group of the subsequent entry data, and the specifying method of the transmission order. As long as it is a method that can specify the group of entry data and the transmission order, the same operation and effect can be obtained even with other methods than those shown in FIG.

(Sixth embodiment)
In the sixth embodiment, the post-entry data transmitted from the preceding system is divided into a plurality of units of post-entry data, and the data to be sent in one transmission is designated in advance among the divided units of data. In addition, the transmission order is designated, and the post-entry data to be transmitted every time is designated. Since the configuration of the control unit is the same as that of the first embodiment described above, description thereof is omitted.

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

  The post-entry data designation information 7 designates “position information”, “size information”, and “transmission order” for each unit of post-entry data (post-entry data 1, post-entry data 2,..., Post-entry data k). .

  Thereafter, the entry data designation information is held by all 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 second embodiment. Yes.

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

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

  In the example of FIG. 14, the unit of the entry data after designating the same numerical value is transmitted simultaneously in the middle of one control process. Further, for example, it is determined in advance that a group of post-entry data is transmitted in ascending order of numerical values. Furthermore, information that is known to be transmitted every time (denoted as “every time” in FIG. 14) is designated in the later entry data that is transmitted every time the control process for transmitting the later entry data is completed. For example, if the “transmission order” of the post-entry data 1 is 1 and the “transmission order” of the post-entry data k is 1, the post-entry data 1 and the post-entry data k are transmitted simultaneously.

  And it transmits in the time of the 1st control process which started the process in connection with back. In addition, if there is post-entry data whose “transmission order” is specified as 1, it is also transmitted at the same time. On the other hand, since the “transmission order” of the subsequent entry data 2 is designated as “every time” in this example, the subsequent entry data 2 is always transmitted together with the subsequent entry data.

  Next, the effect of this embodiment will be described.

  First, dividing the post-entry data has an effect of keeping the number of executions of the control process per unit time constant. In addition, depending on the characteristics of the control process, the value changes every time the control process is executed, so when the post-entry data is divided and transmitted, it is possible to fall into a deadlock where it is not possible to match all the post-entry data forever. There is sex. In that respect, in the sixth embodiment, since the entry data after performing the matching process every time can be designated, there is an effect that the deadlock as described above is not caused.

  FIG. 14 shows one example of the method of specifying the subsequent entry data, the group of the subsequent entry data, the specifying method of the transmission order, and the specifying method of the subsequent entry data to be transmitted every time. As long as it is a method that can refer to the storage area, a method that can specify a group and a transmission order of post-entry data, and a method that can specify the post-entry data to be transmitted every time, the same effect can be obtained in other methods than those shown in FIG. The effect is obtained.

(Seventh embodiment)
FIG. 15 is a diagram illustrating exchange of data of each unit in the control units of the preceding system and the subsequent system when a rear system enters in the seventh embodiment. Note that the configuration itself of the control unit is the same as that of the first embodiment described above, and thus the description thereof is 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 seventh embodiment, when the local system is a post-entry system, the post-entry data receiving unit 15 notifies the post-entry data request to the post-entry data transmitting unit 12 via the data transmission unit 2. Thus, the post-entry data transmission is started.

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

  Here, a case will be described in which the present invention is applied to the fourth embodiment, the fifth embodiment, and the sixth embodiment in which post-entry data is divided into specified groups and transmitted.

  If the back-entry data designation information can be held in both the back-entry system and the preceding system, these embodiments can be realized as described above. However, this is based on the premise that the back-entry data and the back-entry data information of the preceding system are completely the same.

  In addition, if the entry / exit data information is added or deleted after the control unit to be entered later, mutual management of the later entry data transmitted between the preceding system and the later entry system may not be performed correctly. is there.

  Therefore, in the seventh embodiment, the post-entry data required by the post-entry system side is notified from the post-entry data receiving unit 15 as a post-entry data request, so that the predecessor system stores the requested post-entry data as data. It transmits via the transmission part 2. As a result, the post-entry system can correctly receive the post-entry data required by its own system, and the post-entry process is correctly performed.

  Next, effects of the seventh embodiment will be described.

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

  If this is not according to the seventh embodiment, in order to match the back-entry data information of the entire system, it is necessary to change the back-entry data information after stopping the entire system once. In view of the fact that the reliability of the seventh embodiment is remarkably deteriorated, the effect of the flexibility obtained by the seventh embodiment is obvious.

  In addition, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention at the stage of implementation. In addition, the embodiments may be appropriately combined as much as possible, and in that case, combined effects can be obtained. Furthermore, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, when an invention is extracted by omitting some constituent elements from all the constituent elements shown in the embodiment, when the extracted invention is implemented, the omitted part is appropriately supplemented by a well-known common technique. It is what is said.

The block diagram which shows the whole structure of the multiplex system of this invention. The block diagram which shows the structure of the control part in this invention. The figure which shows the outline of the processing content in the state without a back entry system in the control part of this invention. The figure which shows the outline | summary of the processing sequence in the 1st Embodiment of this invention. In the 1st Embodiment of this invention, The figure which shows exchange of the data of each part of a preceding system and a back-entry system in case there exists back-entry. The figure which shows the example which divides back entry data into 3 parts and transmits over 3 control cycles in the 1st Embodiment of this invention. The figure which shows the example in which the post-entry data of another part changes in the 1st Embodiment of this invention, while transmitting the post-entry data divided | segmented. The figure which shows the example of the back entry data designation | designated information of the 3rd Embodiment of this invention. The figure for demonstrating the effect of the 3rd Embodiment of this invention. The figure which shows the outline | summary of the processing sequence in the 4th Embodiment of this invention. The figure for demonstrating the effect of the 4th Embodiment of this invention. The figure which shows the example of the back entry data designation | designated information of the 5th Embodiment of this invention. The figure which shows the example of the back entry data designation | designated information of the 6th Embodiment of this invention. The figure which shows the example of the back entry data designation | designated information of the 7th Embodiment of this invention. In the 7th Embodiment of this invention, the figure which shows the exchange of the data of each part of a preceding system and a back-entry system in case there exists back-entry.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Control part, 2 ... Data transmission part, 3 ... Internal data storage area, 4, 5, 6, 7 ... Example of back entry data designation information, 10 ... Control process execution part, 11 ... Other system back entry monitoring part, DESCRIPTION OF SYMBOLS 12 ... Back-entry data transmission part, 13 ... Back-entry permission part, 14 ... Back-entry start part, 15 ... Back-entry data receiving part, 16 ... Back-entry data collation / matching part, 17 ... Back-entry completion part

Claims (6)

When the control process execution means for executing the control process in the own system, the other system post-monitoring means for monitoring that the post-entry system is activated, and the post-entry monitor means detect the activation of the post-entry system , The post-entry data transmission means for transmitting the post-entry data necessary for the post-entry to the post-entry system, and when the own system is the predecessor, the post-entry completion signal is received from the post-entry system Post-entry permission means for notifying entry permission and post-entry that judges that the own system is a post-entry system from the operating status of the other system, notifies the previous system of the subsequent entry, and starts the post-entry process A start entry means, a post-entry data receiving means for receiving the post-entry data by the start of a post-entry process by the post-entry start means, and the post-entry data received by the post-entry data receiving means inside the own system Check against the data and if there is a mismatch, the data Notifying the preceding system that the subsequent entry has been completed by matching the data by the subsequent entry data matching / matching means and the subsequent entry data matching / matching means, and the preceding entry of the preceding system In a multiplex system having a post-entry completion means for receiving a post-entry permission signal from the permission means and causing the control processing execution means to start control processing,
The post-entry data transmission means transmits only the changed part of the post-entry data after transmitting all the post-entry data from the preceding system to the post-entry system.   The multiplex system according to claim 1, wherein the post-entry data transmission unit transmits pre-designated data as the post-entry data.   The multiplex system according to any one of claims 1 and 2, wherein the post-entry data transmission unit transmits the post-entry data by dividing it into a predetermined size or less.   The post-entry data transmission means divides the post-entry data to be transmitted into a plurality of units of post-entry data, and transmits the units specified from the units of the plurality of post-entry data as a group. The multiplex system according to any one of claims 1 to 3.   The multiplex system according to claim 4, wherein the post-entry data transmission unit transmits the group in a designated transmission order.   The multiplex system according to any one of claims 1 to 5, wherein the post-entry data transmission unit transmits post-entry data designated to be transmitted every time.

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