JP4937081B2 - Data transfer device and data transfer system - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data transfer system in which a large number of data transfer devices are connected in communication in a tree structure, and the collected data in each data transfer device is collected in the highest data transfer device, and the data transfer device.

  In the conventional tree type network system, the request transmission load of the broadcasting station apparatus located at the highest level is reduced by transferring the request information to the lower order apparatus through the tree type network. In addition, by receiving the reply information from the lower-level device and sequentially transferring it to the higher-level device including its own reply information, the network load and communication load when the higher-level device receives the reply information from the lower-level device is reduced. (For example, refer to Patent Document 1). In addition, a method for solving the reduction of the request (polling) transmission load by the host by multicast transmission has been proposed (see, for example, Patent Document 2).

JP 2006-67077 A (page 6-7, FIG. 1 and FIG. 9) Japanese Patent Laid-Open No. 11-340991 (page 3, FIG. 1)

  However, in the conventional network system described above, in the conventional tree type network system as described in Patent Document 1, a tree structure is fixedly constructed (assuming that devices are connected in advance in a tree shape). Therefore, when a communication error or device error occurs in a device on the way, there is a problem that the reply information from the lower device cannot be transferred to the higher device. For example, when a failure occurs in the two lower-level devices as viewed from the broadcasting station device, the broadcasting station device can obtain reply information of all devices even if devices other than these two devices are operating normally. could not. Further, when reply information cannot be received from a lower-level device, there is no method for determining whether there is a problem with the lower-level device or whether reply information is not returned due to the fact that the lower-level device is not operating. In addition, even if the reply information is returned normally, the reply information from the lower device is always transferred to the upper device in addition to the reply information of the own device. Therefore, there is a problem that is not suitable for a system that requires a quick reply.

  Also, in the conventional polling system using multicast as described in Patent Document 2, when the number of devices that can receive multicast packets under the agent increases, the processing load on the agent increases, so the multicast arrives. The network must be divided and configured. Further, when one agent goes down, there is a problem that the manager located at the highest level, like the system described in Patent Document 1, cannot confirm the status of the device directly under the agent.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a data transfer apparatus and a data transfer system that can construct a data transfer system having a flexible tree structure.

  The data transfer device according to the present invention is configured to transfer data to be transferred next based on index data for each transfer destination data transfer device included in the processing device group list data indicating the transfer destination data transfer device from the own device. Dividing processing means for determining a device and generating new processing device group list data corresponding to the data transfer device, and adding identification information of the device to the transmission path list from the data transfer device of the transfer source to the device Transmission path update means for generating a new transmission path list, collection instruction data for instructing data collection to the transfer destination data transfer apparatus, and a new processing apparatus group list generated by the division processing means When the data and the new transmission route list updated by the transmission route update means are transferred to the data transfer device to be transferred next, and the collection instruction data is received A data collecting means for collecting the indicated data, the acquired data acquired by the data acquisition means, based on the transmission route list, in which a returning means for returning the transfer source of the data transfer apparatus.

  The data transfer device according to the present invention determines a data transfer device to be transferred next, generates a new processing device group list data corresponding to the data transfer device, and transmits data from the transfer source data transfer device to the own device. A new transmission route list is generated by adding the identification information of the own device to the transmission route list, the data is transferred to the data transfer device of the transfer destination, and the collected data in each data transfer device is stored in the transmission route list. Based on this, the data is returned to the transfer source data transfer device, so that a flexible tree structure data transfer system can be constructed.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing a data transfer apparatus according to Embodiment 1 of the present invention.
In the figure, a data transfer device (processing device) is a device for transferring data to other data transfer devices and for performing data collection processing in its own device. The receiving means 1, the division processing means 2, the connection means 3 , Transfer means 4, transmission path update means 5, data collection means 6, collected data list aggregation means 7, and return means 8.

  Input data 100 to the data transfer apparatus is composed of collection instruction data 101, transmission path list 102, and processing apparatus group list data 103. Note that the transmission path list 102 is not required only for the first device that performs data transfer. Further, output data 110-1 to 110-n from the data transfer device includes collection instruction data 111, transmission path list 112, and processing device group list data 113, respectively. Here, the collection instruction data 101 is data for instructing a data collection operation to the transfer destination data transfer apparatus. The collected data includes, for example, contents described in a specific file, HDD capacity, memory size, and any data may be targeted. The transmission path list 102 is a list indicating transmission paths from the host (transfer source) data transfer apparatus to the own apparatus, and details thereof will be described later with reference to FIGS. Furthermore, the processing device group list data 103 is data indicating information of a data transfer device lower than the own device, and details thereof will be described later. Further, the collection instruction data 111-1 to n, the transmission path list 112-1 to n, and the processing device group list data 113-1 to n in the output data 110-1 to 110-n are the collection instruction data in the input data 100, respectively. 101, similar data output from the data transfer device based on the transmission path list 102 and the processing device group list data 103.

  The receiving means 1 in the data transfer apparatus is means for receiving data from the upper apparatus or the lower apparatus. The division processing means 2 determines the data transfer device to be transferred next based on the processing device group list data 103 received by the receiving means 1, and the processing device group list data 113-1 to 113-1 corresponding to this data transfer device. means for generating n. The connection unit 3 is a unit for performing communication connection with other data transfer apparatuses. The transfer means 4 is means for transferring the output data 110-1 to -n to a data transfer apparatus lower than the own apparatus. The transmission path update unit 5 is a unit for adding the identification information of the own apparatus to the transmission path list 102 received by the reception unit 1 and generating the transmission path lists 112-1 to 112-n. The data collection unit 6 is a unit for collecting and storing data that has been instructed for collection in advance or when the collection unit data 101 is received by the receiving unit 1. The collected data list aggregating means 7 is a means for aggregating the collected data of the own apparatus and the collected data or the collected data list received from another data transfer apparatus into one. The return means 8 is means for transferring collected data or a collected data list to a higher-level data transfer device.

Next, the operation of the first embodiment will be described.
First, the overall operation of the data transfer apparatus will be described.
Each data transfer device obtains the collection instruction data 101, the transmission route list 102, and the processing device group list data 103 by the reception unit 1, and divides the processing device group list into a predetermined number by the division processing unit 2, and updates the transmission route. A transmission path list 112-1 to 112-n in which identification information of the own apparatus is added to the transmission path list 102 received by the means 5 is generated, and the connection means 3 is connected to a predetermined number of data transfer apparatuses together with the collection instruction data. The communication path is opened using the transfer means 4 and transferred using the transfer means 4. Also, the collected data of the own apparatus is acquired using the data collecting means 6 and transferred to the upper apparatus using the returning means 8. Further, the collected data (or collected data list) received from the lower data transfer apparatus received by the receiving means 1 is collected into one by the collected data list aggregating means 7 and then transferred to the upper data by the returning means 8. Transferred to the device.
In the present embodiment, while dividing the processing device group list data 103, lower-level data transfer devices to be transmitted on the spot are determined and the transfer is repeated sequentially. As a result, a tree structure as shown in FIG. 2 is constructed. . In order to record the route, there is a transmission route list 102, 112-1 to n.

Next, generation of a transmission path list will be described with reference to FIGS.
First, square boxes 10, 21 to 23, 31 to 39, and 40 to 52 in FIG. 2 indicate data transfer devices (processing devices), respectively. These data transfer devices are connected in a tree structure to constitute a data transfer system. Has been. The boxes are divided into upper and lower portions, the symbols shown in the upper row are identifiers that are identification information uniquely indicating the data transfer device, and the alphabets shown in the lower row are identifiers of the processing device group list. Accordingly, the data transfer devices 40 to 52 whose alphabets are not described in the lower row indicate the terminal data transfer devices.

  In FIG. 2, it is assumed that each data transfer device uses three communication lines to transmit to the next device. Initially, the tree structure as shown in FIG. 2 is not constructed. That is, the processing device group list (processing device group list data 103) provided by each data transfer device is divided, and the divided processing device group lists (processing device group list data 113-1 to 113-n) are respectively separated. In order to transfer to the data transfer apparatus, a logical tree structure is formed by repeating this operation. In the process of collecting the collected data, by collecting the data while going back through such a tree structure, the highest data transfer device 10 has a load of data communication with at most three (data transfer devices 21 to 23). Can collect data of thousands or tens of thousands of units with low load.

  3 to 9 are transmission path lists generated by the respective data transfer apparatuses. FIG. 3 is a transmission path list generated by the data transfer apparatus 10 and transmitted to the data transfer apparatuses 21 to 23. FIG. 4 is a transmission path list transmitted from the data transfer apparatus 21 to the data transfer apparatuses 31 to 33. FIG. 5 shows a transmission path list transmitted by the data transfer apparatus 22 to the data transfer apparatuses 34 to 36, and FIG. 6 shows a transmission path list transmitted from the data transfer apparatus 23 to the data transfer apparatuses 37 to 39, respectively. 7 to 9 are transmission path lists generated by the data transfer apparatuses 31 to 33 and transmitted to the respective lower data transfer apparatuses. As described above, every time transmission processing is performed in each layer, the data transfer device as the transmission source adds and updates the information of its own data transfer device and transmits a new transmission path list.

FIG. 10 is a diagram showing the upper and lower relationships related to data collection. The figure has the same form as the figure shown in FIG. 2 for easy understanding. In the figure, the upper part of the square box shows the identifier of each data transfer device as in FIG. The lower row is a transmission route list. As can be seen by looking at the boxes of the respective data transfer apparatuses, it can be seen that the transmission path list generated at the stage of transmitting the collection instruction data in FIG. 2 indicates a transmission path unique to each data transfer apparatus.
For example, the transmission path list of the data transfer apparatus 31 shown in FIG. 7 can be referred to when the data transfer apparatuses 40 and 41 return the collected data list, and the data transfer apparatus to be transmitted can be obtained. ing. Even if the data transfer device 31 that is one layer higher is in a state where communication is not possible due to the occurrence of a failure or a processing load, the data transfer device 21 (identifier b) that is two layers higher in the transmission path list You can reply. That is, the return means 8 is configured to perform a return process to the transfer source data transfer device of the transfer source data transfer device when communication to the transfer source data transfer device cannot be performed.

  If no failure or the like occurs, the highest-level data transfer device 10 only needs to receive data transfer from the three data transfer devices 21 to 23, even if there are tens of thousands of data transfer devices thereunder. Similarly, by receiving from these three units, it is possible to simultaneously receive the collected data list of tens of thousands and the notification of the data transfer device in which the failure has occurred.

Next, the operation of the first embodiment will be described in detail.
FIG. 11 is a flowchart showing the operation of the data transfer apparatus when data is transferred from the upper level to the lower level.
First, in step ST1, the receiving unit 1 receives the collection instruction data 101, the transmission path list 102, and the processing device group list data 103 as the input data 100 from the upper data transfer device. Here, the processing device group list data 103 includes index data for each data transfer device, such as CPU capacity, memory capacity, and the number of lines that can communicate simultaneously.

  Next, in step ST <b> 2, the collection data specified by the collection instruction data is acquired from the data collection unit 6 and delivered to the return unit 8. If the data designated by the collection instruction data cannot be acquired (or does not exist), the data collection means 6 uses the data indicating that there is no collected data as the collected data. Details of the processing of the return means 8 will be described later using the flowchart of FIG.

  Subsequently, in step ST3, the division processing means 2 divides the processing device group list data 103 into predetermined n pieces by a predetermined method. At this time, the determination of n depends on the system design, but the upper limit is the number of communication lines that can be opened by the data transfer apparatus. That is, among the index data of each data transfer apparatus, the number of lines that can be simultaneously communicated is used as the division index data that is an index of division. As a method of dividing, for example, a numerical value indicating a priority or processing capability is given to each data transfer device described in the processing device group list, and the data is arranged in a predetermined method such as a descending order of the numerical values. In other words, it is only necessary to divide the playing cards in order from the first to the n people. That is, this division processing is as follows.

  First, the division processing means 2 obtains the total number of lines that can be communicated simultaneously with each of the determined n data transfer apparatuses from the index data. For example, in the example of FIG. 2, in the case of the data transfer apparatus 10, when n = 3 and the number of lines that each of the data transfer apparatuses 21 to 23 can communicate with is 3 lines, the total number of lines is There will be 9 lines. Next, the division processing means 2 is a data transfer device in which the collection instruction data is to be retransferred by n data transfer devices excluding n data transfer devices from all data transfer devices included in the processing device group list data. Find the total number of units. For example, the processing device group list data of the data transfer device 10 describes data for 25 b to z, and the number of units excluding n (= 3) from the 25 is 22 units. If the total number is larger than the total number of lines, the own apparatus is allocated as the (n + 1) th data transfer apparatus, the (n + 1) post-partition processing apparatus group list data is determined, and the (n + 1) th data transfer apparatus. N divided post-processing device group list data other than the (n + 1) th post-processing device group list data corresponding to n is used as n post-processing device group list data corresponding to the determined n data transfer devices. decide. In the data transfer apparatus 10, since the total number (= 22) is larger than the total number of lines (= 9), n + 1 post-division processing apparatus group list data is determined, and n corresponding to the three data transfer apparatuses 21 to 23 is determined. The processing device group list data is determined.

  Then, the division processing unit 2 includes n data transfer devices and n post-division processing until the number of data transfer devices included in the (n + 1) th post-division processing device group list data becomes n or less. The process of determining the device group list data is repeatedly executed. For example, in the example of FIG. 2, in the case of the data transfer device 31, when two processing units (identifiers n and w) are described in the processing device group list data 103 and the division number n is 2, the (n + 1) th item. Since the number of data transfer devices included in the post-division processing device group list data is n or less, the processing device group list data 113-1 to 113-n corresponding to the data transfer devices 41 and 42 are not generated.

  Next, in step ST4, the transmission path update unit 5 adds the terminal information of its own device to the received transmission path list 102, and generates transmission path lists 112-1 to 112-n. In step ST5, the transfer means 4 uses the processing device group list data 113-1 to 113-n divided into n processing device groups, except for the data transfer device in which a failure has occurred after this step. The data transfer device to be transmitted next is determined for each of the list data 113-1 to 113-n.

  Next, in step ST6, the connection means 3 opens a communication line one line at a time for the data transfer apparatus determined for each divided processing apparatus group list data, and the transfer means 4 is divided corresponding to each. The processor group list data 113-1 to n, the transmission path lists 112-1 to n, and the collection instruction data 111-1 to n are transmitted. As a result of the process of step ST6, when all of the communications in the n line are normally terminated in step ST7, this process is completed. On the other hand, if the transmission is abnormally terminated in any of the n lines in step ST7, a terminal other than the terminal whose failure has been clearly identified in the corresponding processing device group list data after division in step ST8. Check if the data transfer device is listed. If all of the data transfer apparatuses described are faulty, the information on the faulty apparatus is handed over to the return means 8 in step ST9, and a report of the faulty data transfer apparatus is sent to the upper data transfer apparatus. (Details of this will be described later using the flowchart of FIG. 12). On the other hand, when the data transfer device other than the abnormality generating device is described in the divided processing terminal group list data 113-1 to 113-n in step ST8, the process returns to step ST5 and the corresponding divided processing device. From the group list, the data transfer device described at the top is selected from the data transfer devices excluding the data transfer device in which the failure has occurred. In this way, the processing is continued until a communicable data transfer device can be found. Further, it is possible to know that such communication connection has been attempted to all the data transfer devices by returning the list of processing device groups in which only the data transfer devices that cannot communicate are returned to the highest-level data transfer device.

Next, the operation of the return means 8 will be described in detail along the flowchart of FIG.
The return means 8 waits for data input in step ST11. In this step, it is possible to design whether data is input to the host device immediately after data is input, or whether the data is output after a little time is accumulated by performing timer control. Next, in step ST12, it is confirmed whether there is processing terminal group list data in which the collected data, the collected data list, or the abnormality occurrence device is described. This delivery may be in a file format or data on a memory. The collected data is collected by the data collecting means 6 in advance or at the reception timing of the collection instruction data 101 and delivered to the returning means 8.

  In step ST13, the received data is confirmed, and when there are a plurality of data, the collected data list aggregating means 7 aggregates and converts the collected data into a predetermined collected data list. For example, when the collected data from a plurality of lower devices or the collected data list aggregated by the lower devices has arrived, the collected data list is aggregated as one collected data list by the collected data list aggregating means 7.

  In step ST14, the return means 8 takes out the transmission route list 102 received in step ST1 (see FIG. 11), and selects a data transfer apparatus that is one layer higher. In step ST15, the connection means 3 opens a communication line to the data transfer device. If the communication line cannot be opened in step ST16 as a result of step ST15, the return means 8 shifts the transmission path list pointer P by one in step ST18, returns to step ST15, and further returns the data transfer device of the upper layer. Try to open a communication line. By repeating steps ST15, ST16, and ST18, a higher-level data transfer device that opens the communication line in the transmission path list is found. If none of the upper data transfer devices can be opened, the return means 8 performs processing such as outputting a log as error processing.

  If a higher data transfer device capable of communication is found in step ST16, the return means 8 transmits the collected data list in step ST17. If a transmission error or the like occurs here, processing is performed in the order of step ST18, step ST15, and step ST16, and transmission is performed to another upper data transfer apparatus. Finally, in step ST19, it is confirmed whether the collected data or the failure report for the data transfer device described in the processing device group list data 103 received by the receiving unit 1 in step ST1 has been transmitted to the upper data transfer device. If not, the process returns to step ST11 and waits for the next data to be input. The process in step ST11 can be designed not to be a permanent standby process if it is terminated under a predetermined condition.

  In the return processing by the return means 8, the collected data from all the data transfer devices described in the processing device group list data may be returned to the upper data transfer device after all the collected data are prepared. In this way, when data is collected in the form as shown in FIG. 2, for example, the highest-level data transfer device can receive the entire data in three receptions, no matter how many data transfer devices exist under it. Data collection is possible.

  In the operation of the return means 8, the return processing is performed for the data transfer apparatus on the first layer. However, each data transfer apparatus receives the collection instruction data, and the data collection means 6 collects the data. At that time, the return means 8 may return the collected data directly to the highest data transfer device. In such a configuration, the collected data is returned to the highest data transfer device while expanding the tree structure as a data transfer system, so all data transfer to the highest data transfer device at the same timing. No return processing is performed from the device, and collected data from each data transfer device can be collected quickly without increasing the reception load of the highest data transfer device so much.

  Thus, in the first embodiment, the processing device group list data 103, 113-1 to n, the collection instruction data 101, 111-1 to n, and the transmission path list updated by each higher-level data transfer device. 102, 112-1 to n are used to collect information, so that the lower-level data transfer device has a transmission path from the highest-level data transfer device to itself (which data transfer device has passed through). It is not necessary to know the existence of another data transfer device.

  In addition, when the collected data list is transmitted to the host data transfer device, it is transmitted to the host device without waiting for reports from all the data transfer devices described in the processing device group list data. The host data transfer device has an effect of grasping the progress of processing. Furthermore, when the processing device group list data is divided and transmitted to n units, the reception only needs to be received from at most n data transfer units, and further, data is transmitted sequentially (sequentially) in the connection. Compared with a system that receives data from a large number of data transfer devices in the May rain method, there is an effect of significantly reducing the reception load.

In addition, since the host data transfer device need only be aware of the data transfer device described in the processing device group list data received by itself, access from a data transfer device that does not exist in the processing device group list data. As a result, the security effect can be improved.
Therefore, in the past, when the number of processing devices increased, it was necessary to significantly improve the performance of the highest processing device and the network bandwidth to which the highest processing device was connected. Since there is almost no need for facility enhancement, there is an effect of reducing equipment and operation costs.

  As described above, according to the data transfer device of the first embodiment, based on the index data for each transfer destination data transfer device included in the processing device group list data indicating the transfer destination data transfer device from the own device. A division processing means for determining a data transfer device to be transferred next, and generating new processing device group list data corresponding to the determined data transfer device, and a transmission path list from the transfer source data transfer device to the own device A transmission path update means for generating a new transmission path list in which the identification information of the own apparatus is added to the apparatus, collection instruction data for instructing a data collection operation to the transfer destination data transfer apparatus, and a division processing means. Transfer means for transferring the generated new processing device group list data and the new transmission route list updated by the transmission route update means to the data transfer device to be transferred next, and collection A data collecting unit that collects the instructed data, and a return unit that returns the collected data collected by the data collecting unit to the data transfer device that is a transfer source based on the transmission path list. Therefore, a flexible tree structure data transfer system can be constructed.

  Further, according to the data transfer apparatus of the first embodiment, the return means returns the received transmission route list, so that the data transfer system can be used even if the transmission route changes dynamically every time data is transferred. It can be constructed and a more flexible data transfer system can be obtained.

  Further, according to the data transfer apparatus of the first embodiment, when the return means cannot return to the transfer source data transfer apparatus, the return means performs a return process to the transfer source data transfer apparatus of the transfer source data transfer apparatus. Therefore, even when an abnormality such as a failure occurs in the transfer source data transfer apparatus, the collected data can be returned by following the transfer source as the data transfer system.

  Further, according to the data transfer apparatus of the first embodiment, if the return means cannot return to the transfer source data transfer apparatus, the return means is based on the transmission path list returned from the transfer destination data transfer apparatus. Since the return processing is further performed to the data transfer device of the transfer source of the data transfer device, the collected data can be reliably returned to the transfer source even in a data transfer system in which the transmission path dynamically changes.

  Further, according to the data transfer apparatus of the first embodiment, when there are a plurality of collected data to be returned to the transfer source data transfer apparatus as collected data from the transfer destination data transfer apparatus, these collected data are collected. A collection data list aggregating means for aggregating as a data list is provided, and the return means returns the collected data list, so that the data transfer system as a whole can be transferred from the transfer destination data transfer device to the transfer source data transfer device. It is possible to reduce the number of communications when the return process is performed.

  Further, according to the data transfer apparatus of the first embodiment, when the data collection instruction has been received normally, the return means returns the collected data directly to the data transfer apparatus that is the first transfer source. The collected data can be quickly collected in the first transfer source data transfer device while reducing the load of reception processing in the first transfer source data transfer device.

  Further, according to the data transfer apparatus of the first embodiment, the return means uses the collected data list aggregation means as a collected data list of collected data from all data transfer apparatuses described in the processing apparatus group list data in the own apparatus. In the case of aggregation, the collected data list is returned to the transfer source data transfer device, so that the collected data of all the data transfer devices ahead of the transfer destination are returned to the transfer source data transfer device. Therefore, the data transfer device as the transfer source needs to be received only once, and the reception load can be minimized.

  Further, according to the data transfer apparatus of the first embodiment, the transfer means determines that the data transfer apparatus is incapable of communication when none of the data transfer apparatuses described in the received processing apparatus group list data is in communication. Since the return data is added to the collected data and the return means returns the collected data, the transfer source data transfer device can easily know whether or not the transfer destination data transfer device cannot communicate due to a failure or the like. be able to.

  Further, according to the data transfer device of the first embodiment, when the data collection unit cannot collect the data instructed by the collection instruction data, the data collection unit generates data indicating that the data could not be acquired as the collection data. Therefore, the transfer source data transfer apparatus can easily know whether or not there is collected data in the transfer destination data transfer apparatus.

  Further, according to the data transfer system of the first embodiment, in the data transfer system in which a plurality of data transfer devices are connected in communication in a tree structure, and the collected data in the plurality of data transfer devices is collected in the highest data transfer device. Each data transfer device collects data for instructing data collection in each data transfer device based on the index data for each data transfer device included in the processing device group list data indicating the data transfer device lower than its own device The division index data of the data transfer device to which the instruction data should be retransmitted is obtained, and n (n is an integer of 2 or more) data transfer devices and n data transfer devices from the processing device group list data based on the division index data Divided processing means for determining n processing device group list data corresponding to the above, and a transmission path from the host data transfer device to the own device A transmission path update means for generating a new transmission path list in which the identification information of the own apparatus is added to the list, and a collection instruction to be retransmitted for each of the n processing apparatus group list data determined by the division processing means When data is added and transfer means for transferring to n data transfer devices together with a new transmission path list updated by the transmission path update means, and collection instruction data is received, the instructed data is collected Since the data collection means and the return means for transferring the collected data collected by the data transfer apparatus in the hierarchy below the own apparatus to the upper data transfer apparatus based on the transmission path data, the data transfer in a flexible tree structure A system can be constructed.

  In addition, according to the data transfer system of the first embodiment, the division processing means obtains the total number of lines that can be simultaneously communicated with each of the determined n data transfer apparatuses from the index data, and the processing apparatus group list data The total number of data transfer devices to which the collection instruction data should be retransferred is obtained by n data transfer devices excluding n data transfer devices from all the data transfer devices included in the network, and the total number is larger than the total number of lines. If it is larger, the device is assigned as the (n + 1) th data transfer device, n + 1 processing device group list data is determined, and other than the (n + 1) th processing device group list data corresponding to the (n + 1) th data transfer device. The n processing device group list data are determined as n processing device group list data corresponding to the determined n data transfer devices. It can be constructed of a data transfer system easily.

  In addition, according to the data transfer system of the first embodiment, the division processing unit is configured to perform n data until the number of data transfer devices included in the (n + 1) th processing device group list data becomes n or less. Since the process of determining the transfer device and the n processing device group list data is repeatedly executed, it is possible to easily know to which level the processing device group list data should be divided.

  Also, according to the data transfer system of the first embodiment, when the own device is the lowest data transfer device, the return means returns the transmission path data and the collected data in the own device to the upper level. The lowest-order data transfer device does not need to acquire collected data of other data transfer devices, and can simplify the configuration as a data transfer system.

  Further, according to the data transfer system of the first embodiment, the return means, when the own device is not the lowest data transfer device, collects the collected data of the lower data transfer device and the collected data of the own device. Since the data is returned to the upper data transfer apparatus based on the transmission path data, the return path to the uppermost data transfer apparatus can be easily constructed.

  In addition, according to the data transfer system of the first embodiment, when there are a plurality of collected data to be returned to the upper data transfer apparatus due to the collected data from the lower data transfer apparatus, these collected data are collected in the collected data list. Since the collected data list is returned, the return means returns the collected data list, so that the entire data transfer system performs return processing from the lower data transfer device to the higher data transfer device. In this case, the number of communication times can be reduced.

  Further, according to the data transfer system of the first embodiment, the return means monitors whether or not the transfer of the collected data to the upper data transfer apparatus is normally completed, and if it is detected that the transfer is not normally completed, Based on the transmission path data, the return processing is performed to the data transfer device further higher than the data transfer device of the higher level, so that the collected data can be reliably returned to the transfer source as the data transfer system.

Embodiment 2. FIG.
In the first embodiment, necessary information is sequentially transmitted from the upper layer data transfer device to the lower layer data transfer device, and as a result, the route from the lower data transfer device to the lower layer is reversed in the reverse order. It was configured to trace back the result to the upper layer data transfer device. In the second embodiment, in each data transfer device, a transmission path for returning data from the lower data transfer device to the higher data transfer device is stored in a state as shown in FIG. Only the collection instruction data is transmitted from all the data transfer apparatuses to all the data transfer apparatuses. Then, the collected data is returned from the lower data transfer apparatus to the upper data transfer apparatus using the transmission path list. The division of the data transfer device and the return processing from each data transfer device to the upper data transfer device are the same as in the first embodiment.
With this configuration, it is possible to collect data more quickly in an environment where multicast is available, and it is also possible to prevent responses due to multicast instructions from being concentrated on the highest-level data transfer device. .

  In the first and second embodiments, the network for connecting the data transfer apparatuses for communication is not particularly mentioned. However, the telephone line including the protocol supported by the so-called IP network (v4, v6) is used. Any form such as a wireless line or a private dedicated line may be used. Broadcast and satellite lines are also included in such communication lines.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the data transfer system by Embodiment 1 of this invention. It is explanatory drawing which shows the tree structure and processing apparatus group list data of the data transfer system by Embodiment 1 of this invention. It is explanatory drawing of the transmission path | route list | wrist transmitted by a1-a3 of the data transfer system by Embodiment 1 of this invention. It is explanatory drawing of the transmission path | route list | wrist transmitted by b1-b3 of the data transfer system by Embodiment 1 of this invention. It is explanatory drawing of the transmission path | route list | wrist transmitted by c1-c3 of the data transfer system by Embodiment 1 of this invention. It is explanatory drawing of the transmission path | route list | wrist transmitted by d1-d3 of the data transfer system by Embodiment 1 of this invention. It is explanatory drawing of the transmission path | route list | wrist transmitted by e1-e2 of the data transfer system by Embodiment 1 of this invention. It is explanatory drawing of the transmission path | route list | wrist transmitted by h1-h2 of the data transfer system by Embodiment 1 of this invention. It is explanatory drawing of the transmission path | route list | wrist transmitted by k1 of the data transfer system by Embodiment 1 of this invention. It is explanatory drawing which shows the tree structure and transmission route list | wrist of the data transfer system by Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the data transfer apparatus in the case of performing the data transfer from the high-order to the low-order of the data transfer system by Embodiment 1 of this invention. It is a flowchart which shows the return process of the data transfer system by Embodiment 1 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Receiving means, 2 Division | segmentation processing means, 3 Connection means, 4 Transfer means, 5 Transmission route update means, 6 Data collection means, 7 Collected data list aggregation means, 8 Return means, 100 Input data, 101, 111-1 to 111 -N Collection instruction data, 102, 112-1 to 112-n Transmission path list, 103, 113-1 to 113-n Processing device group list data, 110-1 to 110-n Output data.

Claims (16)

Based on the index data for each data transfer device of the transfer destination included in the processing device group list data indicating the data transfer device of the transfer destination from its own device, the data transfer device to be transferred next is determined and determined Division processing means for generating new processing device group list data corresponding to the data transfer device;
A transmission path update means for generating a new transmission path list in which the identification information of the own apparatus is added to the transmission path list from the data transfer apparatus of the transfer source to the own apparatus;
Collection instruction data for instructing data transfer operation to the transfer destination data transfer device, new processing device group list data generated by the division processing means, and new data updated by the transmission path update means A transfer means for transferring the transmission route list to the data transfer device to be transferred next;
When the collection instruction data is received, data collection means for collecting the instructed data;
A data transfer apparatus comprising return means for returning the collected data collected by the data collection means to a data transfer apparatus as a transfer source based on the transmission path list.   The data transfer apparatus according to claim 1, wherein the return means returns the received transmission route list.   3. The return means according to claim 1, wherein if the return means cannot return the data to the transfer source data transfer apparatus, the return means further performs a return process to the transfer source data transfer apparatus of the transfer source data transfer apparatus. Data transfer device.   If the return means cannot return the data to the transfer source data transfer device, the return means returns it to the transfer source data transfer device of the transfer source data transfer device based on the transmission path list returned from the transfer destination data transfer device. 3. The data transfer apparatus according to claim 2, wherein processing is performed. When there are a plurality of collected data to be returned to the transfer source data transfer device in the collected data of the transfer destination data transfer device, the collected data list collecting means for collecting the collected data as a collected data list is provided,
5. The data transfer apparatus according to claim 1, wherein the return means returns the collected data list.   3. The data transfer apparatus according to claim 1, wherein when the data collection instruction is normally received, the return means returns the collected data directly to the data transfer apparatus as the first transfer source. .   If the collected data list aggregating unit aggregates the collected data from all the data transfer devices described in the processing device group list data in the own device as a collected data list, the return means returns the collected data list to the transfer source data. 6. The data transfer device according to claim 5, wherein the data transfer device is returned to the transfer device. The transfer means, when any of the data transfer devices described in the received processing device group list data is incapable of communication, adds data indicating that the data transfer device is incapable of communication to the collected data,
5. The data transfer device according to claim 1, wherein the return means returns the collected data.   The data collection means generates data indicating that the data could not be acquired as collection data when the data specified by the collection instruction data could not be collected. The data transfer apparatus according to any one of claims. In a data transfer system in which a plurality of data transfer devices are communicatively connected in a tree structure, and collected data in the plurality of data transfer devices is collected in a top-level data transfer device,
Each of the data transfer devices is
Based on the index data of each data transfer device included in the processing device group list data indicating the data transfer device subordinate to the own device, the collection instruction data for instructing data collection in each data transfer device is retransferred. The division index data of the power data transfer device is obtained, and n (n is an integer of 2 or more) data transfer devices and the n data transfer devices are determined from the processing device group list data based on the division index data. division processing means for determining n processing device group list data;
A transmission path update means for generating a new transmission path list in which the identification information of the own apparatus is added to the transmission path list from the host data transfer apparatus to the own apparatus;
The collection instruction data to be retransmitted is added to each of the n processing device group list data determined by the division processing means, and the new transmission path list updated by the transmission path update means Transfer means for transferring to the n data transfer devices;
When the collection instruction data is received, data collection means for collecting the instructed data;
A data transfer system comprising: return means for transferring the collected data collected by the data transfer device of the hierarchy below the own device to the upper data transfer device based on the transmission path data.   The division processing means obtains the total number of lines that can be communicated simultaneously with each of the determined n data transfer apparatuses from the index data, and the n data from all the data transfer apparatuses included in the processing apparatus group list data. The total number of data transfer devices to which the collection instruction data should be re-transferred is obtained by the n data transfer devices excluding the transfer device, and when the total number is larger than the total number of lines, the number of own devices is increased to n + 1. N + 1 processing device group list data is determined as nth data transfer device, and n + 1 processing device group list data other than the (n + 1) th processing device group list data corresponding to the (n + 1) th data transfer device is determined. 11. The data transfer according to claim 10, wherein the data transfer is determined as the n processing device group list data corresponding to the determined n data transfer devices. Stem.   The division processing means determines n data transfer devices and n processing device group list data until the number of data transfer devices included in the (n + 1) th processing device group list data is n or less. The data transfer system according to claim 11, wherein the process is repeatedly executed.   The return means returns the transmission path data and the collected data in the own apparatus to the higher order when the own apparatus is the lowest data transfer apparatus. The data transfer system described in the section.   If the own device is not the lowest data transfer device, the return means sends the collected data of the lower data transfer device and the collected data of the own device to the upper data transfer device based on the transmission path data. The data transfer system according to any one of claims 10 to 12, wherein the data is returned. When there is a plurality of collected data to be returned to the upper data transfer device due to the collected data from the lower data transfer device, the collected data list collecting means for collecting these collected data as a collected data list,
The data transfer system according to any one of claims 10 to 12, wherein the return means returns the collected data list.   The return means monitors whether or not the transfer of the collected data to the upper data transfer device is normally completed, and if it is detected that the transfer is not completed normally, based on the transmission path data, the return means The data transfer system according to any one of claims 10 to 12, further comprising performing a return process to a higher-level data transfer device.

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