CN112738151A - Conveying device - Google Patents
Conveying device Download PDFInfo
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- CN112738151A CN112738151A CN202010940181.1A CN202010940181A CN112738151A CN 112738151 A CN112738151 A CN 112738151A CN 202010940181 A CN202010940181 A CN 202010940181A CN 112738151 A CN112738151 A CN 112738151A
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- 238000012544 monitoring process Methods 0.000 claims abstract description 224
- 238000012546 transfer Methods 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 abstract description 52
- 238000004891 communication Methods 0.000 abstract description 30
- 238000010586 diagram Methods 0.000 description 16
- 238000012545 processing Methods 0.000 description 14
- 238000003745 diagnosis Methods 0.000 description 8
- 230000014509 gene expression Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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- 230000003466 anti-cipated effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00028—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment involving the use of Internet protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
- H04L51/42—Mailbox-related aspects, e.g. synchronisation of mailboxes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
Abstract
The invention provides a transmission device, which can realize more reliable communication of monitoring data to a remote place by using an E-mail even under the condition that encrypted communication cannot be used. The transfer device is provided with: an acquisition unit configured to acquire monitoring data; an object determination unit connected to the acquisition unit and configured to determine the monitoring data as object monitoring data; and a determination unit connected to the object determination unit and configured to determine valid object monitoring data.
Description
Technical Field
The present disclosure relates to a transmission apparatus of monitoring data.
Background
In various types of facilities such as a gas turbine power generation facility, a nuclear power generation facility, and a chemical plant, in order to monitor whether or not the facilities are operating normally, facility state quantities such as temperature and pressure are acquired and monitored (for example, see patent document 1).
Documents of the prior art
Patent document
Patent document 1: japanese unexamined patent publication No. 2012-67757
Disclosure of Invention
Problems to be solved by the invention
When the remote site monitors device monitoring data including the device state quantities, event data, and the like, the device transmits the monitoring data from the device to a computer such as a server provided at the remote site in accordance with an https (high Text Transfer Protocol secure) Protocol or the like via a communication network (such as a dedicated cable or the internet) connecting the device to the remote site. In this case, if an improper condition such as tampering or breakage of the content of the monitoring data occurs in a certain path of the communication path, the monitoring of the monitoring data at the remote site may not be properly performed. It is known that encryption is performed in order to protect monitoring data in a communication path from being improper, but in an environment where encryption of monitoring data cannot be used, protection of monitoring data cannot be performed by encryption.
In view of the above, an object of at least one embodiment of the present invention is to provide a transmission apparatus capable of realizing more reliable communication of monitoring data to a remote place by using an electronic mail even when encrypted communication cannot be used.
Means for solving the problems
A transfer device according to at least one embodiment of the present invention includes:
an acquisition unit configured to acquire monitoring data;
an object determination unit connected to the acquisition unit and configured to determine the monitoring data as object monitoring data;
and a determination unit connected to the object determination unit and configured to determine the object monitoring data that is valid.
ADVANTAGEOUS EFFECTS OF INVENTION
According to at least one embodiment of the present invention, there is provided a transmission device capable of realizing more reliable communication of monitoring data to a remote place by using electronic mail even in a case where encrypted communication cannot be used.
Drawings
FIG. 1 is a diagram schematically illustrating a device remote monitoring system according to one embodiment of the present invention;
fig. 2 is a diagram schematically showing the function of a transfer device according to an embodiment of the present invention;
fig. 3 is a diagram for explaining the processing of the valid data determination unit according to one embodiment of the present invention, and shows a case where Nr is 4 and the number of target monitoring data of a (3) is greater than the number of target monitoring data of B (1);
fig. 4 is a diagram for explaining the processing of the valid data determination unit according to one embodiment of the present invention, and shows a case where Nr is 5 and the number of target monitoring data of a (3) is greater than the number of target monitoring data of B (2);
fig. 5 is a diagram for explaining the processing of the valid data determination unit according to one embodiment of the present invention, and shows a case where Nr is 4 and the number of object monitoring data of a and B is equal (2);
fig. 6 is a diagram for explaining the processing of the valid data determination unit according to the embodiment of the present invention, and shows a case where all the object monitoring data do not match each other;
fig. 7 is a diagram for explaining the processing of the valid data determination unit according to the embodiment of the present invention, and shows a case where the number of target monitoring data is 1;
fig. 8 is a diagram showing a processing flow of the transfer device according to the embodiment of the present invention.
Description of the reference numerals
1 conveying device
10 transfer procedure
11 processor
12 storage device
2 monitoring data acquisition part (acquisition part)
3 object discriminating part
4 valid data determination unit (determination unit)
41 selection part
6 remote monitoring system for equipment
7 device
71 transmitting device
72 firewall
8 communication network
81a internal network (device side)
81b internal network (remote site side)
82 external network
91 addressee device
91s mail server
92 information providing device
93 diagnostic device
94 firewall
95 monitor terminal
E-mail
D monitoring data
De valid data
Dt object monitoring data
Nr specifies the number of receptions in time
Detailed Description
Several embodiments of the present invention will be described below with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described as the embodiments and shown in the drawings are not intended to limit the scope of the present invention, and are merely illustrative examples.
For example, expressions indicating relative or absolute arrangements such as "a certain direction", "along a certain direction", "parallel", "orthogonal", "central", "concentric", or "coaxial" indicate not only such arrangements, but also states of relative displacement with a tolerance, or an angle and a distance to the extent that the same function is obtained.
For example, the expressions indicating the same states of things such as "same", "equal", and "uniform" do not strictly indicate the same states, but indicate states that have a tolerance or a difference in the degree of obtaining the same function.
For example, the expression "square" or "cylindrical" indicates not only a shape of a square or a cylinder that is geometrically strict but also a shape including a concave and convex portion or a chamfered portion as long as the same effect can be obtained.
On the other hand, expressions such as "arrange", "equip", "have", "include", or "have" one constituent element are not exclusive expressions that exclude the presence of other constituent elements.
Fig. 1 is a diagram schematically showing a device remote monitoring system 6 according to an embodiment of the present invention. The facility remote monitoring system 6 is a system for monitoring a facility 7 such as a power generation facility or a chemical facility which is thermal power or nuclear power from a remote site connected via a communication network 8(81a, 81b, 82). As shown in fig. 1, the device remote monitoring system 6 includes: a transmitting device 71 provided in the equipment 7, one or more destination devices 91 provided outside the equipment 7, and a transmitting device 1 connected to the destination devices 91. As shown in fig. 1, the equipment remote monitoring system 6 may further include at least one of an information providing device 92 capable of storing and providing information, such as a Web server or a file server, communicably connected to the transmission device 1, and a diagnostic device 93 for performing diagnosis such as warning detection of an abnormality of the equipment 7. Thus, the device 7 can be monitored from the monitoring terminal 95 at the remote location via the external network 82 or the like based on the information stored in the information providing device 92 or the diagnosis result of the diagnosis device 93.
More specifically, the transmitter 71 is a computer (described later) provided inside the device 7. Normally, an internal network 81a such as a lan (local Area network) installed in an installation site of the device 7 is connected to an external network 82 (for example, the internet) via the firewall 72, and the transmission device 71 is connected to the internal network 81 a. On the other hand, the destination device 91, the transmission device 1, and the information providing device 92 are computers (described later) on the external network 82 side connected to the firewall 72. For example, the transmission device 1 may be connected to the internal network 81b at a remote location connected to the external network 82 via a firewall 94 at the remote location. The information providing device 92 or the diagnostic device 93 may be connected to the internal network 81b or the like (see fig. 1) on the remote site side or the external network 82 in a state in which communication with the transmission device 1 is possible.
The above-described devices included in the equipment remote monitoring system 6 will be described.
The transmitting device 71 is a device that transmits, for example, periodically or the like, monitoring data D including at least one of data of various status amounts collected at the device 7, for example, periodically or the like, and event data for notifying an event that occurs at the device 7 aperiodically, to the one or more destination devices 91. Generally, the plant 7 is provided with a plurality of sensors for detecting state quantities such as temperature, pressure, and flow rate, and detection values of these various sensors are collected by a Control device (not shown) such as dcs (distributed Control system) of the Control plant 7, for example, in order to monitor the detection values of these various sensors. The event data is transmitted to a control device (not shown) when a predetermined condition is satisfied.
The transmitting device 71 transmits the state quantity or event data collected in the device 7 as the monitoring data D as described above, but performs communication so that the monitoring data D to be transmitted reaches a plurality of predetermined destinations (recipient mail addresses). Specifically, the transmitting device 71 transmits the monitoring data D having the same content to each of the plurality of addresses using a Protocol for transmitting the electronic Mail E, such as the SMTP Protocol (Simple Mail Transfer Protocol). Generally, the electronic mail E is composed of a header and a body, but the monitoring data D may be stored in a body (text) or a header field of a header in which a user can freely describe a message and transmitted, or may be transmitted by being attached to the electronic mail E. Further, the electronic mail E may be created for each destination. Alternatively, an email E (for example, 1 package) may be created in a smaller number than the number of recipient addresses, and in this case, for each email E, one or more recipient addresses may be specified using bcc (blind Carbon copy) or cc (Carbon copy).
The destination device 91 is a device that receives the monitoring data D transmitted from the transmitting device 71 according to the protocol of the transmission email E and the like. Specifically, the destination device 91 is, for example, a mail server 91s (receiving side mail server). The monitoring data D transmitted from the transmission device 71 is stored in a mailbox (inbox) prepared for each mail account in the mail server 91s, based on a mail address specified by the recipient address of the header portion of the electronic mail E carrying the monitoring data. In this case, the plurality of addressees may not all be managed by the same addressee device 91 (mail server 91 s). That is, at least a part of the plurality of addresses may be managed by the address device 91 different from the other addresses, or all of the plurality of addresses may be managed by the different address devices 91. This enables the monitoring data D (E-mail E) transmitted from the transmission device 71 to be transmitted to the destination device 91 without passing through the same communication path.
The destination device 91 transmits the monitoring data D received from the transmission device 71 to the transmission device 1 by ftp (file Transfer protocol), for example. At this time, the destination device 91 may send the received email E directly to the transmission device 1. Alternatively, the destination device 91 may extract the monitoring data D from the email E and transmit the monitoring data D to the transmission device 1, and for example, the destination device 91 may transmit the monitoring data D (email E) to the transmission device 1 together with management information such as the time of reception. In this way, all the monitoring data D received from the transmission device 71 by the one or more destination devices 91 is transmitted to the transmission device 1 described later.
When the transmission device 1 receives the monitoring data D from the destination device 91, it determines whether the received monitoring data D is valid or invalid as will be described later. Then, the transmission device 1 transmits the monitoring data D determined to be valid to a functional unit and a device for performing processing of the monitoring data D, such as the information providing device 92 (computer) and the diagnostic device 93 (computer).
In the embodiment shown in fig. 1, the device remote monitoring system 6 includes a plurality of destination devices 91 (mail servers 91 s). The transmitting device 71 transmits an electronic mail E, which specifies a plurality of destinations from BCC, according to the SMTP protocol every time a transmission timing of the collected monitoring data is transmitted periodically or the like, thereby transmitting the monitoring data D having the same content to the plurality of destinations. Thereby, the plurality of destination devices 91 receive one or more electronic mails E having the same contents. In addition, the transmission device 1 is another device having a housing different from the destination device 91, and the transmission device 1 and the destination device 91 are communicably connected by wire or wirelessly.
However, the present invention is not limited to the present embodiment. In some other embodiments, the transmission device 1 and the destination device 91 may be configured as one device that shares hardware such as a CPU and a memory and an os (operation system), such as operating on the same computer. At least two of the transmission device 1, the destination device 91, the information providing device 92, the diagnosis device 93, and the like may be constituted by one device as described above.
The conveyor 1 will be described in detail below with reference to fig. 2 to 7.
Fig. 2 is a diagram schematically showing the function of the transfer device 1 according to the embodiment of the present invention. Fig. 3 is a diagram for explaining the processing of the valid data determination unit 4 according to one embodiment of the present invention, and shows a case where Nr is 4 and the number of target monitoring data Dt of a (3) is greater than the number of target monitoring data Dt of B (1). Fig. 4 is a diagram for explaining the processing of the valid data determination unit 4 according to one embodiment of the present invention, and shows a case where Nr is 5 and the number of target monitoring data Dt of a (3) is greater than the number of target monitoring data Dt of B (2). Fig. 5 is a diagram for explaining the processing of the valid data determination unit 4 according to one embodiment of the present invention, and shows a case where Nr is 4 and the number of target monitoring data Dt of a and B is equal (equal to 2). Fig. 6 is a diagram for explaining the processing of the valid data determination unit 4 according to one embodiment of the present invention, and shows a case where all the target monitoring data Dt do not match each other. Fig. 7 is a diagram for explaining the processing of the valid data determination unit 4 according to one embodiment of the present invention, and shows a case where the number of target monitoring data Dt is 1.
The transmission apparatus 1 is an apparatus that determines the validity of the monitoring data D received from the device 7 via the destination address apparatus 91. As shown in fig. 2, the transfer device 1 includes: a monitoring data acquisition unit 2, an object discrimination unit 3, and a valid data determination unit 4. The functional units will be described by taking, as an example, a case where the destination device 91 is a mail server 91s and the transmission device 71 periodically transmits the latest monitoring data D to the plurality of mail servers 91s by the electronic mail E.
Further, as described above, the transmission device 1 is constituted by a computer. The computer includes a processor 11 such as a CPU (not shown), a memory (storage device 12) such as a ROM or a RAM, and the like. The functional units are realized by operating the processor 11 (e.g., calculating data) in response to a command of the program (transfer program 10) loaded in the main storage device. In other words, the transfer program 10 is software for causing a computer to realize each of the functional units, and may be stored in a storage medium that can be read into and transported by the computer, instead of a temporary signal.
The monitoring data acquiring unit 2 is a functional unit configured to acquire the plurality of monitoring data D received by the plurality of mail servers 91s from the plurality of mail servers 91 s. More specifically, the monitoring data acquiring unit 2 waits for receiving a plurality of pieces of monitoring data D from a plurality of addresses at which the pieces of monitoring data D having the same contents are received by the email E transmitted from the device 7 as described above. That is, the monitoring data acquisition unit 2 waits for communication of the monitoring data D stored so as to be associated with each of the mail accounts of all the destinations from one or more mail servers 91s that manage the plurality of destinations.
Further, as for the plurality of monitoring data D transmitted from the transmitting apparatus 71, if the communication between the transmitting apparatus 71 and the mail server 91s and the communication between the mail server 91s and the transmitting apparatus 1 succeed, it is anticipated that all the contents are received by the mail server 91 s. However, since the communication fails somewhere between the transmission apparatus 71 and the transmission apparatus 1, the transmission apparatus 1 may receive the monitoring data D less than the number of the plurality of addressees transmitted by the transmission apparatus 71.
The object determination unit 3 is connected to the monitoring data acquisition unit 2, and is configured as a functional unit that determines the monitoring data D as the object monitoring data Dt. Specifically, the object determination unit 3 determines, as the object monitoring data Dt, the first monitoring data D having the earliest destination address from among the one or more monitoring data D received in the standby state of the monitoring data acquisition unit 2 and the monitoring data D received at the destination address within a predetermined time from the reception time of the first monitoring data D. In the embodiment shown in fig. 2, the reception time is a time when the destination (mail server 91s) receives the electronic mail E transmitted by the transmission device 71. The mail server 91s detects and stores the reception time of the received email E using a built-in clock, and transmits to the transmission apparatus 1 together with the monitoring data D included in the received email E.
In the embodiment shown in fig. 1 to 2, the transmission device 71 periodically transmits the monitoring data D, but the predetermined time is shorter than the interval of transmission of the periodic monitoring data D. It is possible to prevent two types of monitoring data D, which are originally different contents and transmitted from the transmission device 71 at intervals, from being processed together, and to simplify the processing. Alternatively, the predetermined time may be set to a time shorter than a time required for considering an improper tampering or the like. This can appropriately exclude the possibility of improper presence, and more reliably receive the monitoring data D.
That is, the object determination unit 3 sets a timeout (predetermined time) for the reception of the monitoring data D, and determines whether the monitoring data D that has timed out is valid once. This may be expected to allow communication data transmitted at substantially the same time by the slave device 7, for example, simultaneously or sequentially transmitted, to be received at their respective addressees for a certain period of time. This is because, if the reception timing of each of the recipient addresses of the plurality of electronic mails E is significantly slower than the other addresses, there is a possibility that tampering or the like may be suspected in the middle of the communication path.
The valid data determination unit 4 is a functional unit connected to the object determination unit 3 and configured to determine valid object monitoring data Dt. That is, the valid data determination unit 4 determines valid target monitoring data Dt from the one or more target monitoring data Dt communicated by the mail server 91 s. More specifically, the valid data determination unit 4 determines valid target monitoring data Dt based on the number of target monitoring data Dt determined by the target determination unit 3 (hereinafter, the number of received data Nr in a predetermined time). In the embodiments shown in fig. 1 to 2, the valid data determination unit 4 is configured to execute the processes of all the embodiments described below, but in some other embodiments, it may be configured to execute the processes of at least one of the embodiments.
Specifically, in some embodiments, as shown in fig. 3 to 4, the valid data determination unit 4 may include a selection unit 41 configured to select, as the valid data De, the target monitoring data Dt that matches the target monitoring data Dt most when there are target monitoring data Dt that do not match each other in a case where the number Nr of received data Nr is two or more (Nr ≧ 2) within a predetermined time. Thus, by making a majority decision, the effective monitoring data D can be appropriately determined.
The embodiment shown in fig. 3 shows a case where the number of received data Nr is 4 (Nr is 4) within a predetermined time, the number of object monitoring data Dt of content a is 3, and the number of object monitoring data Dt of content B is 1. That is, the number Nr of received data in a predetermined time is 2 or more, and there may be cases where the target monitoring data Dt of a and B do not match each other. Therefore, since the number of the object monitoring data Dt of content a (3 in fig. 3) is larger than the number of the object monitoring data Dt of content B (1 in fig. 3), the selection unit 41 selects the object monitoring data Dt of content a as the valid data De. The object monitoring data Dt having the content B is determined as invalid data. Similarly, in the embodiment shown in fig. 4, when the number Nr of receptions within a predetermined time is 5 (Nr equals 5), the number of object monitoring data Dt of content a is 3, the number of object monitoring data Dt of content B is 2, and the selection unit 41 selects the object monitoring data Dt of content a as the valid data De.
In some embodiments, as shown in fig. 5, the valid data determination unit 4 may determine that all the target monitoring data Dt are invalid data when a plurality of target monitoring data Dt, which are selected by the selection unit 41 and match with each other and have the largest number, are received in a predetermined time (Nr ≧ 2). This can reliably avoid the erroneous determination that the monitoring data D is valid.
The embodiment shown in fig. 5 shows a case where the number of received data Nr is 4 (Nr is 4) within a predetermined time, the number of object monitoring data Dt of content a is 2, and the number of object monitoring data Dt of content B is 2. That is, since the number Nr of received data in a predetermined time is 2 or more and the number of object monitoring data Dt having the contents of a and B which match each other is 2 each, the example of fig. 5 is a case where the object monitoring data Dt having the largest number of matching objects (2 of a and B in fig. 5) is plural. In this case, one of the object monitoring data Dt having the content a and the object monitoring data Dt having the content B may be the valid data De, but both are determined to be invalid.
In some embodiments, as shown in fig. 6, the valid data determination unit 4 may determine that all the target monitoring data Dt are invalid data when the number of received data Nr is 2 or more (Nr ≧ 2) within a predetermined time and when all the target monitoring data Dt do not match each other. In this case, although any one of the plurality of target monitoring data Dt is the valid data De, all target monitoring data Dt that do not have the same content are determined to be invalid. This can reliably avoid the erroneous determination that the monitoring data is valid.
In the embodiment shown in fig. 6, when the number Nr of receptions within a predetermined time is 4 (Nr equals 4), the number of object monitoring data Dt whose contents are A, B, C, D is 1 for each, and all object monitoring data Dt do not match each other. In this case, although any one of the A, B, C, D data is the valid data De, it is determined to be invalid.
On the other hand, in some embodiments, as shown in fig. 7, when the number Nr of received data is 1 within the predetermined time (Nr is 1), the valid data determination unit 4 may determine the target monitoring data Dt as the valid data De. This can avoid the situation where the monitoring data D is not valid.
The flow of the transfer process performed by the transfer apparatus 1 will be described with reference to fig. 8. Fig. 8 is a diagram showing a processing flow of the transfer device 1 according to the embodiment of the present invention.
In step S0 of fig. 8, the monitoring data D including the status amount and the like stored in the time (transmission interval) between the transmission time and the immediately preceding transmission time when the transmission time has reached the transmission time is transmitted from the device 7 (transmission apparatus 71) to each of the plurality of addresses by the electronic mail E.
In step S1, the monitoring data D transmitted from the device 7 (the transmission device 71) by the electronic mail E as described above is received by each of the plurality of destination devices 91 (the mail servers 91S) and stands by. At this time, the plurality of pieces of monitoring data D are received together with information on the reception time of the destination (destination device 91), and the target monitoring data Dt is determined from the plurality of pieces of monitoring data D received based on the reception time in step S2.
In step S3, it is determined which of the contents of the object monitoring data Dt determined in step S2 is valid based on the number of received data Nr within a predetermined time, which is the number of determined object monitoring data Dt. That is, in step S31, the reception number Nr is confirmed within the predetermined time. If Nr ≧ 2 is not present in step S32 (Nr ≧ 1), then in step S33, 1 piece of target monitoring data Dt is determined as valid data De (see fig. 7). On the other hand, in the case where Nr ≧ 2 is set in step S32, it is checked in step S34 whether or not the contents of the plurality of object monitoring data Dt all match, and in the case where all the contents match, all the object monitoring data Dt are determined as valid data De (the process proceeds to step S33). When there is object monitoring data Dt having one different content in step S34, the determination is made by majority determination in step S35, and the object monitoring data Dt having the largest number of matching objects is set as valid data De (see fig. 3 to 4). In step S35, when there are a plurality of the target monitoring data Dt that match each other and the number of the target monitoring data Dt is the largest, the determination is impossible by the majority determination, and all the target monitoring data Dt are determined as invalid data (see fig. 5 to 6).
In the embodiment shown in fig. 8, in step S4 following step S3, the contents of the object monitoring data Dt determined to be valid data De are transmitted to the diagnosing apparatus and information providing apparatus 92(Web server). In addition, when there are a plurality of object monitoring data Dt determined as valid data De, since they are the same data, any one of the transfers can be selected.
According to the above configuration, the transmission apparatus 1 determines valid monitoring data D among the monitoring data D transmitted from the device 7 or the like. Thus, by transmitting the effective monitoring data D from the transmission device 1 to a device or a functional unit that monitors and diagnoses the equipment 7, for example, an information providing device 92(Web server or the like) on a communication network such as a cloud, it is possible to appropriately perform monitoring and diagnosis (warning diagnosis of an abnormality or the like) based on the effective monitoring data D, disclosure of the monitoring data D to related persons, and the like, even when encrypted communication is not possible.
The present invention is not limited to the above embodiments, and includes a modification of the above embodiments and an appropriate combination of these embodiments.
(remarks)
(1) A transfer device (1) according to at least one embodiment of the present invention includes:
an acquisition unit (2. for example, a monitoring data acquisition unit of fig. 2. the same applies hereinafter) configured to acquire monitoring data (D);
an object determination unit (3) connected to the acquisition unit (2) and configured to determine the monitoring data (D) as object monitoring data (Dt);
and a determination unit (4) connected to the object determination unit (3) and configured to determine the object monitoring data (Dt) to be valid (see, for example, the valid data determination unit in fig. 2).
According to the configuration of the above (1), the transmission device (1) determines valid monitoring data (De) among monitoring data (D) transmitted from a device (7) or the like. Thus, by transmitting the effective monitoring data (De) from the transmission device (1) to a device or a functional unit for monitoring and diagnosing the equipment (7) or an information providing device (92, for example, a Web server or the like) on a communication network (8) such as a cloud, even when encrypted communication is not available, monitoring and diagnosis (warning diagnosis of an abnormality or the like), disclosure of the monitoring data (D) to a relevant person, or the like can be appropriately performed based on the effective monitoring data (De).
(2) In several embodiments, in the structure of the above (1),
the plurality of destinations receive the monitoring data (D) having the same contents by an electronic mail (E) transmitted from a device (7), and the acquisition unit (2) stands by for receiving the plurality of monitoring data (D) from the plurality of destinations.
According to the configuration of the above (2), the same monitoring data (D) is transmitted to each destination by the device (7) through the plurality of electronic mails (E), and the transmission apparatus (1) stands by for transmitting the monitoring data (D) to the transmission apparatus from each destination of the plurality of electronic mails (E), thereby acquiring the plurality of monitoring data (D) having the same content. Thus, a plurality of pieces of monitoring data (D) having the same content can reach the destination through different communication paths, and it is possible to reliably acquire inappropriate monitoring data (D) that has not been tampered with or the like in the communication paths.
(3) In several embodiments, in the structure of the above (2),
the object determination unit (3) determines, as the object monitoring data (Dt), the first monitoring data (D) whose destination is the earliest from the reception time of the device (7) among the one or more monitoring data (D) received by the standby of the acquisition unit (2) and the monitoring data (D) received by the destination within a predetermined time from the reception time of the first monitoring data (D).
The slave devices (7) can expect that communication data transmitted at substantially the same time is received at each destination within a predetermined time by, for example, transmitting the communication data simultaneously or sequentially. Therefore, when the receiving time of each of the plurality of electronic mails (E) at the destination address is significantly slower than the other electronic mails, it is suspected that there is a possibility that there is an inconvenience such as falsification in the middle of the communication path.
According to the configuration of the above (3), the monitoring data (D) that cannot be received within the predetermined time is determined not to be valid monitoring data (De) from the point of time at which the reception time of the destination is the earliest among the plurality of monitoring data (D). In this way, by determining (once determining) the validity of the monitoring data (D) based on whether or not the monitoring data (D) is received within a predetermined time from the time of the reference with reference to the reception time of the monitoring data (D) received first, it is possible to absorb the difference in transmission time that occurs depending on the communication environment, and to exclude the monitoring data (D) that may be falsified or otherwise inappropriate. This makes it possible to more reliably determine that there is no valid improper monitor data (De) from among a plurality of monitor data (D) having the same content.
(4) In several embodiments, in the structure of the above (3),
the determination unit (4) determines the valid target monitoring data (Dt) based on the number of receptions (Nr) within a predetermined time, which is the number of target monitoring data (Dt) determined by the target determination unit (3),
the determination unit (4) has a selection unit (41), and when there are two or more target monitoring data (Dt) that do not match each other within the predetermined time, the selection unit (41) selects the target monitoring data (Dt) that matches each other by the largest number as valid data (De).
According to the configuration of the above (4), when effective monitoring data (De) among the plurality of monitoring data (D) is determined based on the number of target monitoring data (Dt), the effective monitoring data (De) is determined by majority determination. This enables appropriate determination of valid monitor data (De).
(5) In several embodiments, in the structure of the above (4),
when the number of received data (Nr) is two or more within the predetermined time, the determination unit (4) determines that all the target monitoring data (Dt) are invalid data when a plurality of target monitoring data (Dt) having the largest number of matching target monitoring data (Dt) are selected by the selection unit (41).
According to the configuration of the above (5), when the number of received data (Nr) is plural within the predetermined time, if the number of object monitoring data (Dt) having different contents is plural, there is a possibility that there is an error or the like, and all of them are determined to be invalid. This makes it possible to reliably avoid erroneous determination that the improper monitor data (D) is valid.
(6) In some embodiments, in the configurations (4) to (5) above,
when the number of receptions (Nr) is two or more within the predetermined time and when all the target monitoring data (Dt) do not match each other, the determination unit (4) determines all the target monitoring data (Dt) as invalid data.
According to the configuration of the above (6), when the number of received data (Nr) is plural within the predetermined time, all the object monitoring data (Dt) are invalid when they do not match each other. This makes it possible to reliably avoid erroneous determination that the improper monitor data (D) is valid.
(7) In some embodiments, in the configurations (4) to (5) above,
when the number of received data (Nr) is one within the predetermined time, the determination unit (4) determines the target monitoring data (Dt) as the valid data (De).
According to the configuration of the above (7), the reception number (Nr) is set to be valid when it is one within the predetermined time. This can avoid the situation where the effective monitoring data (De) disappears.
Claims (7)
1. A transfer device is characterized by comprising:
an acquisition unit configured to acquire monitoring data;
an object determination unit connected to the acquisition unit and configured to determine the monitoring data as object monitoring data;
and a determination unit connected to the object determination unit and configured to determine the object monitoring data that is valid.
2. The transfer device of claim 1,
a plurality of recipient addresses receive the monitoring data of the same contents as each other through e-mails sent from the devices respectively,
the acquisition unit waits for reception of the plurality of pieces of monitoring data from the plurality of addresses, respectively.
3. The transfer device of claim 2,
the object determination unit determines, as the object monitoring data, first monitoring data having the destination address earliest from the reception time of the device, and monitoring data received at the destination address within a predetermined time from the reception time of the first monitoring data, among the one or more monitoring data received while the acquisition unit is in standby.
4. The transfer device of claim 3,
the determination unit determines the valid target monitoring data based on the number of received target monitoring data determined by the target determination unit within a predetermined time,
the determination unit has a selection unit configured to select, as valid data, the object monitoring data that matches the object monitoring data of the maximum number when there are object monitoring data that do not match each other when the number of received data is two or more within the predetermined time.
5. The transfer device of claim 4,
when the number of received data is two or more within the predetermined time, the determination unit determines that all the target monitoring data is invalid data when the target monitoring data that matches each other and has the largest number is selected by the selection unit.
6. The transfer device of claim 4 or 5,
when the number of received data is two or more within the predetermined time, the determination unit determines that all the target monitoring data are invalid data when all the target monitoring data do not match each other.
7. The transfer device of claim 4 or 5,
the determination unit determines the target monitoring data as the valid data when the number of received data is one within the predetermined time.
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