JP2020024515A - Data collection state monitoring device, data collection state monitoring method, and data collection state monitoring system - Google Patents

Abstract

To monitor a collection state when data is collected in consideration of a state of a whole data collection system.SOLUTION: A data collection state monitoring device monitors a data collection state of a data collection system including: one or multiple data communication terminals; and a data collection device for collecting data from the respective data communication terminals. The data collection state monitoring device includes: related monitoring object information acquisition means for acquiring operation state information of respective communication devices between the respective data communication terminals and the data collection device; collection data acquisition means for acquiring collection data collected from the respective data communication terminals; and analysis means for analyzing a collection state of collection data in consideration of operation states of the respective communication devices when data is collected in the data collection device, on the basis of at least operation state information of the respective communication devices and collection data.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a data collection status monitoring device, a data collection status monitoring method, and a data collection status monitoring system.

  In recent years, there is a sensor data collection system that collects information of various things. The information collected by the sensor data collection system is provided to, for example, an application, and the application can use the information to provide various services.

  If any abnormality occurs in the sensor data collection system, the data value of the collected sensor data is affected, and an application that uses the sensor data is also affected. Therefore, it is required to monitor the state of the sensor data collection system.

  2. Description of the Related Art Conventionally, Non-Patent Document 1 discloses an example of a system for monitoring the state of a sensor data collection system. The technique described in Non-Patent Document 1 is a method for remotely monitoring the state of a communication device in a sensor data collection system, and particularly has a function of remotely managing the state of a gateway. For example, the technology described in Non-Patent Document 1 monitors whether a gateway is normally activated or an abnormality has occurred on a WEB screen. Further, it is disclosed that the setting of the gateway is changed or the firmware is updated by remote control.

Plat Home Co., Ltd. Company website, product information "AirManage (registered trademark) for IoT", [Online], search date March 14, 2018, Internet <URL; https://openblocks.plathome.co.jp/products/ airmanage_for_iot / ＞

  However, the conventional method for monitoring communication devices as described above manages the state of each device, but does not monitor in consideration of the state of the entire sensor data collection system.

  For example, among the sensor data collected periodically, it is conceivable that some data values are abnormal or missing data is present. When the application uses the data values of the sensor data by averaging them, there is a problem that the application does not know the value of the sensor data of each sensor, and thus it is difficult to find an abnormality.

  Further, for example, when a failure occurs during sensor data collection, recovery may be performed by restarting the wireless communication terminal or the gateway or changing settings. However, if the user has a large number of devices, a person looks at an error log or the like and analyzes the contents of the failure to determine which device is to be controlled and how. Therefore, there has been no method for automatically and promptly and optimally performing a fault recovery.

  Further, for example, it has been difficult to know when an application becomes a problematic level of abnormality or recovers from a failure.

  Therefore, taking into account the state of the entire data collection system, monitor the collection status at the time of data collection, and derive a judgment value according to the state of the device until the data is collected and the data value of the collected data. There is a need for a data collection status monitoring device, a data collection monitoring method, and a data collection status monitoring system that can automatically and optimally recover when an error occurs on a route.

  In order to solve such a problem, a data collection status monitoring device according to a first aspect of the present invention is a data collection system having one or more data communication terminals and a data collection device that collects data from each data communication terminal. A data collection status monitoring device for monitoring a data collection status, wherein (1) related monitoring target information obtaining means for obtaining operating status information of each communication device between each data communication terminal and the data collection device; (3) collected data acquisition means for acquiring collected data collected from each data communication terminal; and (3) at least the communication device at the time of data collection in the data collection device based on at least the operation state information and the collected data of each communication device. Analyzing means for analyzing the collection status of the collected data in consideration of the operating state.

  According to a second aspect of the present invention, there is provided a data collection status monitoring method for monitoring a data collection status of a data collection system having one or more data communication terminals and a data collection device for collecting data from each data communication terminal. In the situation monitoring method, (1) the related monitoring target information acquiring means acquires operating state information of each communication device between each data communication terminal and the data collecting device, and (2) the collected data acquiring means: The collected data collected from each data communication terminal is acquired, and (3) the analyzing means performs the operation of each communication device at the time of data collection in the data collection device based on at least the operation status information and the collected data of each communication device. It is characterized by analyzing the collection status of collected data in consideration of the above.

  A data collection status monitoring system according to a third aspect of the present invention is a data collection system for monitoring a data collection status of a data collection system having one or more data communication terminals and a data collection device for collecting data from each data communication terminal. A status monitoring system, comprising: (1) related monitoring target information acquisition means for acquiring operating state information of each communication device between each data communication terminal and a data collection device; and (2) collection from each data communication terminal. Collecting data acquisition means for acquiring the collected data; and (3) collecting the collected data in consideration of the operation state of each communication device at the time of data collection in the data collection device based on at least the operation state information and the collected data of each communication device. Analyzing means for analyzing the collection status.

  According to the present invention, the collection status at the time of data collection is monitored in consideration of the state of the entire data collection system, and the judgment is made according to the state of the device and the data value of the collected data until data is collected. It is possible to derive a value and automatically perform an optimal recovery in the event of an abnormality on the route.

1 is an overall configuration diagram illustrating an overall configuration of a data collection status monitoring system according to a first embodiment. FIG. 3 is an internal configuration diagram illustrating an internal configuration of the monitoring server according to the first embodiment. FIG. 3 is an explanatory diagram illustrating a flow of operation state data and sensor data according to the first embodiment. 5 is a flowchart illustrating an operation of sensor data collection status monitoring processing in the monitoring server according to the first embodiment. FIG. 3 is an explanatory diagram illustrating an example of a sensor data collection status and a device status according to the first embodiment. FIG. 9 is an internal configuration diagram illustrating an internal configuration of a monitoring server according to a second embodiment. It is a flow chart which shows operation of sensor data collection situation monitoring processing in a monitoring server concerning a 2nd embodiment. FIG. 14 is a configuration diagram illustrating an example of state information stored in a device state information storage unit according to a second embodiment.

(A) First Embodiment Hereinafter, a first embodiment of a data collection status monitoring device, a data collection status monitoring method, and a data collection status monitoring system according to the present invention will be described with reference to the drawings.

(A-1) Configuration of First Embodiment [Overall Configuration]
FIG. 1 is an overall configuration diagram showing the overall configuration of the data collection status monitoring system according to the first embodiment.

  In FIG. 1, a data collection status monitoring system 10 according to the first embodiment includes a plurality of sensor communication terminals 1 (1-1 to 1-3), a gateway 2 (GW2-1, GW2-2), and a data collection server. 3, an application 4, a monitor terminal 5, and a monitoring server 6.

  In FIG. 1, the network between the sensor communication terminal 1 and the gateway 2 is a sensor network SN. In general, a low-speed wireless communication system represented by a specific low-power wireless system or the like can be applied to the communication system of the sensor network SN. For example, a wireless network standard represented by IEEE 802.11a / b / g / n or a wireless communication system such as IEEE 802.15.4, Bluetooth (registered trademark), or UWB may be used. The sensor network SN is a communication method that is slower than the trunk network NT.

  The network between the gateway 2, the data collection server 3, the application 4, the monitor terminal 5, and the monitoring server 6 is a backbone network NT. The backbone network NT is, for example, Ethernet (registered trademark) or Internet. The backbone network NT may be a wireless line or a wired line.

  The sensor data collection system 7 is a system in which the data collection server 3 collects sensor data of each sensor communication terminal 1 via each gateway 2. The sensor data collection system 7 mainly includes each sensor communication terminal 1, each gateway 2, and the data collection server 3.

[Sensor communication terminal]
The sensor communication terminal 1 has one or more sensors and a communication unit. The sensor communication terminal 1 may include only one type of sensor, or may include a plurality of types of sensors. Further, a plurality of sensors of the same type may be provided. The cycle (measurement cycle) at which each sensor performs periodic sensing can be determined according to the type of sensor and the system operation.

  The sensor communication terminal 1 transmits information (packet) including sensor data sensed by a built-in sensor to the gateway 2. Here, the information including the sensor data includes identification information of the sensor (for example, information indicating the type of the sensor, part or all of identification information previously assigned to the sensor, etc.), and identification information for identifying the sensor communication terminal 1. (E.g., MAC address) and time information (e.g., sensing time) may be included.

  The sensor communication terminal 1 also has an operation status acquisition function for acquiring operation status data inside the terminal itself. The sensor communication terminal 1 transmits the operation state data of the terminal itself to the gateway 2. Here, the information including the operation status data may include identification information (for example, a MAC address or the like) of each sensor communication terminal 1 and time information indicating the acquisition time of the operation status data.

[gateway]
The gateway 2 has a function of relaying data between the sensor network SN and the backbone network NT. When receiving information including sensor data from each sensor communication terminal 1, the gateway 2 transmits information including sensor data of each sensor communication terminal 1 to the data collection server 3. Thereby, sensor data can be given to the data collection server 3.

  Further, the gateway 2 has an operation status acquisition function of acquiring operation status data inside the own device. The gateway 2 transmits the information including the operating state data of each sensor communication terminal 1 received from each sensor communication terminal 1 through the sensor network SN to the monitoring server 6, and also monitors the information including the operating state data of the gateway 1 itself. Send it to server 6. Thereby, the operation state data of each sensor communication terminal 1 and the gateway 2 can be given to the monitoring server 6. The information including the operation status data may include identification information for identifying the gateway 2 (for example, a MAC address or the like), time information indicating the acquisition time of the operation status data, or the like.

  As a method for the gateway 2 to acquire information including sensor data from each sensor communication terminal 1, various methods can be widely applied. As an example, for example, the gateway 2 periodically (periodically) transmits an information acquisition request such as a polling packet to each of the sensor communication terminals 1, and each of the sensor communication terminals 1 that has received the request obtains a response to the polling packet. As a method, there is a method of transmitting information including sensor data to the gateway 2 by wireless communication. As another method, each sensor communication terminal 1 may transmit information including sensor data to the gateway 2 by push notification or the like. In any case, the gateway 2 can acquire information including sensor data from each sensor communication terminal 1.

[Data collection server]
The data collection server 3 collects information including sensor data from each sensor communication terminal 1 via the gateway 2 and stores (stores and manages) each sensor data.

  The data collection server 3 provides each sensor data to the application 4 and transmits each sensor data collected from each sensor communication terminal 1 to the monitoring server 6. In this embodiment, as will be described later, the monitoring server 6 is caused to determine the sensor data collection status in the sensor data collection system 7 based on the data value of each sensor data and the like. Therefore, the data collection server 3 transmits each sensor data to the application 4 in order to perform a process using each sensor data, and provides (transmits) each sensor data to the monitoring server 6.

[application]
The application 4 is an application that uses each sensor data collected by the data collection server 3 or a processing unit that executes the application.

  For example, the application 4 requests the data collection server 3 for sensor identification information (sensor ID) of the sensor data to be acquired. In response, the data collection server 3 provides the application 4 with sensor data corresponding to the sensor ID. The method of providing the sensor data to the application 4 is not limited to the above method, and various methods can be applied.

  The application 4 provides a function using each sensor data, and the function of the application 4 is not particularly limited. Although only one application 4 is shown in FIG. 1, a plurality of applications 4 having different functions may be used.

  The application 4 receives a monitoring result of the sensor data collection status in the sensor data collection system 7 from the monitoring server 6 as described later. The monitoring result from the monitoring server 6 includes the reliability of each sensor data as described later, and the application 4 can provide a function with reference to the monitoring result.

[Monitor terminal]
The monitor terminal 5 displays various data managed by the monitoring server 6, sets (or changes settings) for each device such as each gateway 2, the data collection server 3 and the monitoring server 6, and sets each gateway 2. For example, the operating state of each device such as the communication device 2 and each sensor communication terminal 1 is displayed. Accordingly, it is possible to know that an abnormality has occurred in the sensor data collection system 7 (for example, an abnormality of the device), and thus it is possible to recover the sensor data collection system 7.

[Monitoring server]
The monitoring server 6 monitors the sensor data collection status in the sensor data collection system 7 and determines a target sensor data collection status determination value. The monitoring server 6 provides the monitoring result to the monitor terminal 5 to display the monitoring result (hereinafter also referred to as a determination result), or provides the monitoring result to the application 4 or the data collection server 3.

  Here, the collection status determination value is determined on an hourly basis in consideration of the collection status of the sensor data collected by the data collection server 3 and the state of each device on the sensor data transfer path during the period in which the sensor data is collected. This is information for determining the reliability of the sensor data. In this embodiment, as an example of the collection status determination value, a case will be described in which the monitoring server 6 determines the reliability of the sensor data every time.

  The monitoring server 6 acquires, for example, operating state data of each sensor communication terminal 1 and the gateway 2 via the gateway 2. In addition, the monitoring server 6 acquires operating state data from the data collection server 3. Thereby, the operating state of each device on the path to which the sensor data is transferred by the sensor data collection system 7 can be grasped. More specifically, the operating state of each sensor communication terminal 1 that senses sensor data, the state between the sensor communication terminal 1 and the gateway 2 (communication state), and the state between the gateway 2 and the data collection server 3 ( The state of the entire sensor data collection system 7 is grasped as in (communication state).

  Further, the monitoring server 6 acquires each sensor data that is stored and managed from the data collection server 3 in order to acquire target sensor data. Then, the monitoring server 6 analyzes the collection status of the sensor data collected by the data collection server 3 and the transition of the data value of each sensor data.

  For example, if an error occurs during sensor data collection, or if there is an error in the status of each device on the sensor data transfer path, the data value of the sensor data will become an abnormal value, or the sensor data will not be collected. It may happen that the server 3 is not reached. Even in such a case, the application 4 uses the sensor data provided from the data collection server 3 without knowing the situation. In other words, since the application 4 has no way of knowing that the data value of the sensor data is abnormal or that the operation state of each device is abnormal, the application 4 can use the sensor data as it is. .

  Therefore, the monitoring server 6 monitors at least the operating state of each device and each sensor data collection state, and determines the reliability of each sensor data based on the state of the entire sensor data collection system 7. Then, a monitoring result including the reliability of each sensor data is provided to the application 4 and the monitor terminal 5.

[Internal Configuration of Monitoring Server]
FIG. 2 is an internal configuration diagram showing the internal configuration of the monitoring server 6 according to the first embodiment.

  2, the monitoring server 6 includes a rule storage unit 61, a monitoring data collection unit 62, an analysis unit 63, a monitoring result transmission unit 64, and a related monitoring target collection unit 65.

  The hardware configuration of the monitoring server 6 is not shown, but is assumed to be a device having a CPU, a ROM, a RAM, an EEPROM, a communication device, and the like. Then, various functions of the monitoring server 6 are realized by the CPU executing a processing program (for example, a data collection status monitoring program) stored in the storage area. The system may be configured by installing the data collection status monitoring program. Also in that case, the data collection status monitoring program can be represented by each processing unit shown in FIG.

  The rule storage unit 61 stores analysis rules, identification information of the target sensor communication terminal 1, identification information of the data collection server 3, identification information of the gateway 2 passing through the target sensor data, collection conditions, and the like.

  The rule storage unit 61 stores analysis rules for specifying information on devices including the sensor (for example, sensor ID or the like), the sensor communication terminal 1, the gateway 2, and the like, and determining the state. In addition, the rule storage unit 61 includes a notification condition, a notification destination, and the like that specify when and where to notify the determination result (monitoring result).

  The analysis rules are rules and conditions used to determine the reliability of each sensor data in the sensor data collection system 7. Hereinafter, the analysis rule is also referred to as a “sensor data collection state determination rule”.

  The analysis rules include a sensor (for example, a sensor ID) to be analyzed (a sensor data collection state determination target), a sensor communication terminal 1 for sensing sensor data, a “collection rule” including conditions related to a sensor data collection status, and a sensor. It has a “judgment rule” regarding the definition of data reliability and a judgment method, and a “notification rule” regarding a notification condition of a judgment result (monitoring result). A detailed description of such an analysis rule will be described in detail in the operation section.

  The analysis rule may be defined for each sensor communication terminal 1 that performs sensing. Further, since the sensor communication terminal 1 may have a plurality of sensors, it may be defined for each sensor (for example, sensor ID). Therefore, the rule storage unit 61 may store not only one analysis rule but also a plurality of analysis rules. Note that the method of defining the analysis rule is not limited to the above, and it may be possible to specify the collection period of the sensor data.

  The monitoring data collection unit 62 collects and holds target sensor data specified by each analysis rule. More specifically, the monitoring data collection unit 62 collects and holds the operation state data of the sensor communication terminal 1-N from the data collection server 3.

  The related monitoring target collection unit 65 collects and holds the device state data of each device existing on the transfer path of the target sensor data. Specifically, the related monitoring target collection unit 65 collects and holds the operation state data of the sensor communication terminal, the gateway, and the data collection server 3 on which the target sensor is mounted. The monitoring data of a plurality of sensors may be shared.

  The analysis unit 63 performs a state determination using the data collected by the monitoring data collection unit 62 and the related monitoring target collection unit 65 according to each analysis rule in the rule storage unit 61.

  The monitoring result transmission unit 64 transmits the determination result by the analysis unit 63 to the designated notification destination according to the notification conditions specified in each analysis rule stored in the rule storage unit 61.

(A-2) Operation of First Embodiment Next, the operation of the data collection status monitoring process according to the first embodiment will be described.

  In the following, for ease of explanation, a case where the monitoring server 6 monitors the sensor data collection status regarding one sensor will be exemplified. However, the sensor data collection status of each of the plurality of sensors can be monitored in parallel.

[Flow of operation status data and sensor data]
FIG. 3 is an explanatory diagram showing a flow of operation state data and sensor data according to the first embodiment.

  As shown in FIG. 3, the operation state data of each sensor communication terminal 1 and each gateway 2 is transmitted to the monitoring server 6.

  Sensor data observed by a sensor mounted on each sensor communication terminal 1 is transmitted to the data collection server 3 via the gateway 2 and registered. Then, of the sensor data stored in the data collection server 3, sensor data necessary for state monitoring is transmitted from the data collection server 3 to the monitoring server 6.

  The monitoring data can be acquired by the monitoring server 6 by a method such as acquiring by a polling method, or transmitting a setting control signal to each device at the start of the acquisition, and periodically acquiring by a push method from each device. However, the method is not limited.

[Sensor data collection status monitoring process]
FIG. 4 is a flowchart illustrating the operation of the sensor data collection status monitoring process in the monitoring server 6 according to the first embodiment.

  [S101] First, the monitoring server 6 sets monitoring target information and analysis rules for monitoring sensor data collection status.

  Here, an example of the setting of the monitoring target information will be described. For example, when a sensor ID for which sensor data is to be obtained is input from the application 4 to the data collection server 3, the data collection server 3 transfers information including the sensor ID to the monitoring server 6. Thereby, the sensor ID of the sensor data used by the application 4 can be notified to the monitoring server 6. The monitoring server 6 can set the sensor ID as a monitoring target, and determines the sensor data collection status of the sensor ID according to an analysis rule described later.

  The sensor data collection conditions are also input to the monitoring server 6. The input of the sensor data collection condition may be set by calling a condition registered in advance based on the sensor ID, or may be input by an operator based on the sensor ID. That is, the information may be automatically input based on the sensor ID, or may be manually input.

  The sensor data collection conditions are conditions necessary for the monitoring server 6 that determines the sensor data collection status to determine the collection status, and include, for example, a collection time, a sensor data collection frequency, and the like. The collection time indicates a period related to the sensor data collection status determination, and the sensor data collection frequency indicates a frequency (for example, how many times a second) the monitoring server 6 acquires sensor data from the data collection server 3. . The sensor data collection conditions are not limited to the above, as long as the conditions are necessary for the monitoring server 6 to determine the collection status.

  Further, information on the monitoring target related to the sensor data collection of the target sensor ID (related monitoring target) is also set in the monitoring server 6. For example, information about each device on the path from the sensor communication terminal 1-N that acquires and transmits sensor data to the data collection server 3 that is the sensor data collection destination is set.

  More specifically, identification information (for example, a MAC address, an IP address, and the like) of the gateway 2 and address information of a network device on a path from the sensor communication terminal 1-N to the data collection server 3 are set. Also, the identification information (for example, MAC address, etc.) of the sensor communication terminal 1-N equipped with the sensor of the sensor ID, the identification information (for example, MAC address, etc.) of the data collection server 3 and the monitoring server 6 are set. Is done.

  In the monitoring server 6, an analysis rule (sensor data collection state determination rule) is set in the rule storage unit 61.

  [S102] Next, among the analysis rules set in the rule storage unit 61, the monitoring data collection unit 62 collects and stores sensor data from the data collection server 3 according to the collection rule.

  For example, for a data collection server 3 that accumulates and manages each sensor data in association with a sensor ID or the like, the monitoring data collection unit 62 sends target sensor data identification information (for example, sensor ID, sensor communication terminal 1- N, etc.). In response, the data collection server 3 transmits the corresponding sensor data, so that the monitoring data collection unit 62 can collect the target sensor data.

  [S103] Also, the related monitoring target collection unit 65 collects operation state data from each device (for example, the sensor communication terminal 1-N, the gateway 2, the data collection server 3, etc.) set as the related monitoring target in S101. And save.

  For example, the related monitoring target collection unit 65 functions as an SNMP (Simple Network Management Protocol) manager or the like, each device functions as an SNMP agent or the like, and the related monitoring target collection unit 65 checks the operating status of each device that is a related monitoring target. It may be managed.

  [S104] The analysis unit 63 is based on the sensor data collected by the monitoring data collection unit 62 and the operating state data collected by the related monitoring target collection unit 65 according to the determination rule among the analysis rules of the rule storage unit 61. Then, the sensor data collection status is analyzed.

  In the monitoring server 6, when the determination time comes (that is, when the collection time related to the determination of the sensor data collection status has elapsed), the sensor data necessary for determining the sensor data collection status and the operating state data of each device are required. It is determined whether there is a sufficient number. If the required number does not exist, it is determined that the sensor data collection status is not normal (that is, an abnormality has occurred). The determination result is reflected in, for example, the reliability related to the sensor data collection status.

  [S105] The analysis unit 63 determines a monitoring result of the sensor data according to a determination rule among the analysis rules of the rule storage unit 61.

  The analysis unit 63 captures the operating status of each device from the operating status data of each device within a predetermined collection time. This analyzes whether the path state of the sensor data in the sensor data collection system 7 is normal or abnormal (for example, whether an abnormality has occurred in the sensor communication terminal 1-N, the gateway 2, or the like). Then, the analysis unit 63 refers to the determination rule based on the analysis result of the operation state data, and reflects the determination rule on the reliability related to the sensor data collection status.

  In addition, the analysis unit 63 analyzes the collection status of the sensor data of the target sensor ID and the temporal transition of the data value within the determination time (collection time). Then, the determination rule is referred to based on the analysis result of the sensor data collection status and the transition of the data value of the sensor data, and is reflected in the reliability related to the sensor data collection status.

  [S106, S107] Then, the monitoring result transmission unit 64 refers to the notification rule in the rule storage unit 61, and sends the notification destination (for example, the monitor terminal 5, the application 4, the data collection server 3, etc.) specified by the notification rule. It is determined whether notification of the determination result is necessary.

  When notification of the determination result is necessary, the notification result (the monitor terminal 5, the application 4, etc.) according to the notification condition is notified of the determination result. When the notification is unnecessary, the process proceeds to S108.

  The method of notifying the monitor (monitor terminal 5) is not particularly limited. For example, you may make it perform using an electronic mail.

  The notification to the application 4 may be sent from the monitoring server 6 to the application 4. Alternatively, the monitoring server 6 may transmit the data to the data collection server 3, and the data collection server 3 may add the determination result to the sensor data provided to the application 4 and transmit the sensor data to the application.

  [S108] Regarding the processing from S102 to S106, if the sensor is activated or the application 4 uses the sensor data, the process proceeds to S102 and the processing is repeated.

[Example of sensor data collection status monitoring process]
Next, an example of the sensor data collection status monitoring process will be described with reference to the flowchart of FIG.

  Here, the sensor of the target sensor ID periodically senses, and the collection status when each sensor data is collected by the data collection server 3 from the sensor communication terminal 1-N via the gateway 2 is determined.

  [S101] In the monitoring server 6, a sensor ID and identification information (for example, a MAC address) of the sensor communication terminal 1-N are set as monitoring target information. Further, in the data collection server 3, collection conditions such as a collection time and a collection frequency for collecting sensor data from the sensor communication terminal 1-N are set.

  In the monitoring server 6, the identification information of the gateway 2 to be monitored is set.

  Further, an analysis rule (sensor data collection state determination rule) is set in the monitoring server 6. The analysis rule (sensor data collection state determination rule) exemplifies a case where the following “collection rule”, “determination rule”, and “notification rule” are applied. The number of “collection rules”, “judgment rules”, and “notification rules” may be one each, or may be plural.

Here, the reliability of the sensor data is based on a value of 100. When the condition of the following determination rule is met, the value of the reliability is subtracted.
“Collection rule 1”: The sensor value (sensor ID) is a sensor connected to the sensor communication terminal 1-N.
"Collection Rule 2": The device status is checked based on the operation status data of the sensor communication terminal 1-N, the gateway 2, and the data collection server 3.
"Judgment rule 1": "100" (reference value) if the reliability is normal.
"Judgment rule 2": If the device state is "1", the data reliability is "0".
“Judgment rule 3”: For each data collection error, “10” is subtracted from the normal value (the reliability is set to “−10”).
"Determination rule 4": If there is data whose sensor data value is equal to or greater than a predetermined value A (in this example, "10"), the reliability is further reduced by "30"("-30"). And).
"Notification rule": "If the reliability is less than 80 at the time of the previous determination and less than 80 at the time of the current determination, or" If the reliability is less than 80 at the time of the previous determination and the time of the current determination is 80 or more, ", The application 4 is notified.

  [S102, S103] The monitoring data collection unit 62 collects the target sensor data from the data collection server 3, and the related monitoring target collection unit 65 collects the operation state data of each device of the related monitoring target.

  FIG. 5 is an explanatory diagram illustrating an example of the sensor data collection status and the device status according to the first embodiment.

  FIG. 5A shows a transition of the device status over time based on the operation status data of each device to be related and monitored. Here, “1” is set when any of the target sensor communication terminals 1-N, gateway 2, and data collection server 3 is abnormal, and “0” is set when all devices are normal.

  FIG. 5B shows the transition of the data value of the target sensor data over time. Note that the time axes of FIG. 5A and FIG. 5B are synchronized. It is assumed that the sensor senses 10 times per second. It is assumed that a portion where the curve is broken (E1, E2) has an acquisition error. The application 4 acquires sensor data and uses the fluctuation amount for one second.

  An arrow (FIG. 5C) shown between FIG. 5A and FIG. 5B is a period during which the analyzing unit 63 determines the sensor data collection status. The sensor data collection status determination period Tn (n is a positive integer) is set to 2 seconds, and the analyzer 63 determines the collection status based on the device status and the sensor data values for the past 2 seconds every second.

  For example, a number such as “0” written near the arrow of the determination period T1 indicates the number of sensor data collection errors during the determination period T1. As described above, since the sensor performs sensing 10 times per second, the number of collected errors can be determined.

  [S104, S105] The analysis unit 63 analyzes the collection status of the sensor data in each determination period Tn of 2 seconds, and determines the reliability of the sensor data for each determination period Tn.

  Hereinafter, a method of determining the reliability in some of the determination periods T1 to T9 of FIGS. 5A and 5B will be described. The method of determining whether or not each of the plurality of determination rules conforms is not particularly limited, and each determination rule may be determined individually in order. You may decide.

[About the determination periods T1 and T8]
For example, in the determination period T1, the reliability is set to “100” from “determination rule 1”, and since the device state is “0”, there is no subtraction by “determination rule 2”. Further, since the number of collected errors is “0”, there is no subtraction by “judgment rule 3”. Since there is no sensor data whose data value is equal to or larger than the predetermined value A (for example, “10”), there is no subtraction by “judgment rule 4”. Therefore, the reliability in the determination period T1 is determined to be “100”.

  For example, in the determination period T8, the reliability is set to "100" from the "determination rule 1", and since the device state is "0", there is no subtraction by the "determination rule 2". Further, since the number of collected errors is “0”, there is no subtraction by “judgment rule 3”. However, since there is sensor data whose data value is equal to or larger than the predetermined value A (for example, “10”), the reliability is subtracted by “30” (“−30”) according to “determination rule 4”. Therefore, the reliability in the determination period T8 is determined to be “70”. Note that the reliability is also determined to be “70” in the determination period T9 as in the determination period T8.

  Here, in both of the determination periods T1 and T8, the device state is normal and there is no collection error, but it is determined that there is a high possibility that the sensor has measured an abnormal value for some reason in the determination period T8. Can be. In such a case, it is preferable that the reliability of the sensor data be reduced and provided to the application 4.

[About the determination periods T2 and T4]
For example, in the determination period T2, the reliability is set to "100" from the "determination rule 1", and since the device state is "0", there is no subtraction by the "determination rule 2". However, at E1, since there is an error in collecting one sensor data, the reliability is subtracted by “10” by “judgment rule 3” (ie, “−10”). Since there is no sensor data whose value is equal to or greater than the predetermined value A (for example, “10”), there is no subtraction by “judgment rule 4”. Therefore, the reliability in the determination period T2 is determined to be “90”.

  For example, in the determination period T4, when the analysis is performed based on the sensor data collection status in FIG. 5B, the reliability is set to “100” from “determination rule 1”. Since there are four sensor data collection errors in the latter part E2 of the two-second determination period, the reliability is subtracted by “40 (= 10 × 4)” by “determination rule 4”. Since there is no sensor data whose value is equal to or greater than the predetermined value A (for example, “10”), there is no subtraction by “judgment rule 4”. However, since the device state in FIG. 5A is “1”, the reliability is “0” according to “judgment rule 2”. Note that the reliability is also determined to be “0” in the determination period T5 as in the determination period T4.

  Here, the determination period T2 in which a collection error has occurred in the sensor data collection situation is compared with the determination period T4.

  Although a collection error has occurred in both of the determination periods T2 and T4, it can be determined that the device state is normal in the determination period T2 while the device state is abnormal in the determination period T4. Then, in the determination period T4, it is considered that the sensor data has been transferred in a state where an abnormality has occurred or is unstable in the device. In such a case, the reliability of the sensor data is reduced, and the application 4 Is preferably provided.

  As described above, the analysis unit 63 determines the reliability of each determination period according to the analysis rule from the transition of the device state and the data value of the sensor data. Then, the reliability of the determination periods T1 to T9 is “100”, “90”, “90”, “0”, “0”, “100”, “100”, “70”, “70” in that order. Becomes

  [S106, S107] The monitoring result transmission unit 64 transmits the determination result (monitoring result) to the notification destination according to the notification rule based on the reliability of each of the determination periods T1 to T9 determined by the analysis unit 63.

  That is, since the determination periods T4, T6, and T8 match the notification rule by comparing the reliability at the previous determination and the reliability at the current determination, the monitoring result transmitting unit 64 determines whether the determination period T4, T6, or T8 The monitoring result is notified to the application 4.

  Here, the notification rule may be set to, for example, "" the reliability is 80 or more at the time of the previous determination and less than 80 at the time of the current determination, or "the reliability is less than 80 at the time of the previous determination and at the time of the current determination. Is greater than or equal to 80 ", the application 4 is notified. Is intended to notify the application 4 of the point in time when the reliability fluctuation amount is large. For example, depending on the operation of the application 4 that uses the sensor data, if the amount of change in the reliability is large, the use of the sensor data at that time may not be appropriate. Therefore, in the first embodiment, the application 4 is notified when the amount of change in the reliability is large. Note that the value of the reliability (“80”) in the notification rule is an example, and is not limited to this. Further, the above notification rule is an example, and the present invention is not limited to this. The notification rule may be determined as appropriate according to the usage of the application 4.

  The application 4 refers to the reliability and determines whether sensor data can be used. For example, from the section of the determination period T4 in which the notification of the device abnormality is received to the start of the determination period T6 in which the recovery notification is received, the application 4 can take measures such as not using the sensor data. Also, the application 4 can be configured not to use the sensor data in the section between the determination periods T8 and T9 where the device abnormality notification is received again.

(A-3) Effects of the First Embodiment As described above, according to the first embodiment, the sensor data and the operating state of the communication device are input to the monitoring server as the collection status sensor of the sensor data collection system, The sensor data collection status is now determined. Thus, since the situation of the entire sensor data collection system is taken into consideration, an effect is obtained that it is easy to take measures when an abnormality occurs during sensor data collection.

  Also, by providing the collection status of the sensor data to the application as the reliability of the data, an effect is obtained that the application can easily determine whether the sensor data can be used.

(B) Second embodiment [Basic concept of second embodiment]
For example, depending on the observation cycle of each sensor, the transmission cycle of each sensor communication terminal 1 or the gateway 2 (the transmission cycle of information including sensor data), the data collection server 3 relays the gateway 2, Many sensor data may be collected at about the same time.

  For example, when each sensor data of a plurality of sensors is transferred via the same gateway, the processing load of the gateway increases, and there is a possibility that an abnormality may occur or a processing delay may occur. Then, the packet including the sensor data is dropped or lost, and as a result, the sensor data collection status in the data collection server 3 may be affected.

  Therefore, it is required to adjust the traffic amount of the sensor data collection system 7, but the sensor data collection system 7 has a very large number of sensors and the number of sensors. Also, the frequency of data collection is high. Therefore, in order to correspond to the sensor data collection system 7, it is necessary to consider a sensor data collection situation for each sensor.

  Therefore, the second embodiment is intended to be able to perform control relating to data transmission at the time of or before an abnormality of a relay device (for example, a gateway) in consideration of the sensor data collection status of each sensor. Is what you do.

(B-1) Configuration of Second Embodiment Next, a data collection status monitoring device, a data collection status monitoring method, and a data collection status monitoring system according to a second embodiment of the present invention will be described with reference to the drawings. Will be explained.

  The second embodiment differs from the first embodiment in the data collection status monitoring process performed by the monitoring server. Therefore, in the second embodiment, the monitoring server is referred to as a monitoring server 6A, and a detailed description will be given focusing on data collection status processing by the monitoring server 6A. The second embodiment will be described with reference to FIG.

  The monitoring server 6A monitors the sensor data collection status of each sensor similarly to the monitoring server 6 of the first embodiment, and determines the target sensor data collection status determination value.

  Further, the monitoring server 6A identifies the abnormal monitoring target or the monitoring target having a large processing load based on the sensor data collection status of each sensor, the route of each sensor data, and the operation status data of the relevant monitoring target (for example, the gateway 2). To detect. Then, control relating to sensor data transmission is performed on a sensor or a sensor communication terminal passing through the relevant monitoring target.

  FIG. 6 is an internal configuration diagram illustrating the internal configuration of the monitoring server 6A according to the second embodiment.

  As shown in FIG. 6, the monitoring server 6A includes a rule storage unit 61, a monitoring data collection unit 62, an analysis unit 63, a monitoring result transmission unit 64, a related monitoring target collection unit 65, a route storage unit 66, and a device status information storage unit. 67, a control signal transmitting unit 68 is provided.

  The route storage unit 66 stores identification information (for example, a MAC address and an IP address) of the target sensor communication terminal 1 and identification information (for example, a MAC address and an IP address) of the target sensor communication terminal 1 stored in the rule storage unit 61. And the like, and the route information of the sensor data from the sensor communication terminal 1 to the data collection server 3 is stored based on the identification information of the gateway 2 (for example, MAC address, IP address, etc.). When determining the sensor data collection status of a plurality of sensors, the route storage unit 66 stores the route information for each sensor. For example, route information in which the sensor communication terminal 1, the gateway 2, and the data collection server 3 are associated with each other may be stored. Using the information of the route storage unit 66, the sensor communication terminals 1-N having the same gateway 2 as a relay device share data of the related monitoring target collection unit 65.

  The device status information storage unit 67 stores status information (device status information) of each device on a path related to sensor data collection of each sensor. The device status information storage unit 67 stores the operation status data of the related monitoring target collected by the related monitoring target collection unit 65 and the sensor data collection status collected by the monitoring data collection unit 62. In addition, information on the device status (see FIG. 5A) analyzed by the analysis unit 63 or during analysis is stored, and information on the sensor data collection status (see FIG. 5B) is also stored.

  Then, the device status information storage unit 67 derives and stores the status information of each device using the various types of information as described above. Since real-time information is input to the device status information storage unit 67, the status information of each device is sequentially updated. The device status information of each device is also used to share analysis data used when analyzing the sensor communication terminal 1 using the same gateway 2 as a relay.

  The analysis unit 63 determines the reliability of the sensor data based on the sensor data collection status and the device status of the related monitoring target according to the analysis rule, as in the first embodiment. In addition, the analysis unit 63 notifies the monitor terminal 5 and the application 4 and the like of the monitoring result based on the analysis rule.

  Further, the analysis unit 63 refers to the status information of each device in the device status information storage unit 67 and detects a related monitoring target having a large processing load according to the analysis rule. By referring to the status information of each device in the device status information storage unit 67 and the route information for each sensor in the route storage unit 66, the sensor communication terminal 1 including the detected related monitoring target in the route is detected. . At this time, a plurality of sensor communication terminals 1 may be detected.

  The analysis unit 63 sets each of the detected sensor communication terminals 1 and the gateway 2 as a control target device, and provides the control content according to the analysis rule to the control signal transmission unit 68. Thereby, the sensor communication terminal 1 and the gateway 2 to be controlled can be restarted or the setting can be changed. That is, the analysis unit 63 instructs a restart for setting change and initialization in order to change and initialize control information (firmware) related to sensor data transmission processing.

  The control signal transmission unit 68 converts the control target device and the control content determined by the analysis unit 63 into a control signal, and transmits the control signal to the control target device.

(B-2) Operation of the Second Embodiment Next, the operation of the data collection status monitoring process according to the first embodiment will be described.

[Sensor data collection status monitoring process]
FIG. 7 is a flowchart illustrating the operation of the sensor data collection status monitoring process in the monitoring server 6A according to the second embodiment.

  In the following, sensor data of a plurality of sensors is collected by the data collection server 3, and the monitoring server 6A monitors the sensor data collection status of the plurality of sensors.

  For example, in FIG. 1, the path of the sensor data of the sensor A mounted on the sensor communication terminal 1-1 is “sensor communication terminal 1-1” → “gateway 2-1” → “data collection server 3”. .

  The path of the sensor data of the sensor B of the sensor communication terminal 1-2 is “sensor communication terminal 1-2” → “gateway 2-1” → “data collection server 3”. That is, the sensors A and B pass through the same gateway 2-1.

  The path of the sensor data of the sensor C of the sensor communication terminal 1-3 is “sensor communication terminal 1-3” → “gateway 2-2” → “data collection server 3”.

  [S201] In the same manner as in the first embodiment, the monitoring server 6A sets monitoring target information and analysis rules related to sensor data collection status monitoring. When a plurality of sensors are to be monitored, monitoring target information and analysis rules are set for each sensor.

  [S202] Next, among the analysis rules set in the rule storage unit 61, the monitoring data collection unit 62 collects and stores the sensor data from the data collection server 3 according to the collection rule.

  [S203] The related monitoring target collection unit 65 collects and stores operating state data from each device (for example, the sensor communication terminal 1-N, the gateway 2, the data collection server 3, etc.) set as the related monitoring target in S101. I do. For example, the related monitoring target collecting unit 65 functions as an SNMP manager or the like, each device functions as an SNMP agent or the like, and the related monitoring target collecting unit 65 manages the operation state of each related monitoring target device.

  [S204] The operating status data of each device from the related monitoring target collecting unit 65 and the sensor data from the monitoring data collecting unit 62 are input to the device status information storing unit 67.

  Further, the data obtained by the analysis unit 63 by the analysis processing of the sensor data collection status is also input to the device status information storage unit 67.

  The device status information storage unit 67 stores the status information of each device on the path such as the sensor communication terminal 1 and the gateway 2 of each sensor based on the operation status data of each device to be monitored and the data from the analysis unit 63. Save.

  FIG. 8A is a configuration diagram illustrating an example of status information stored in the device status information storage unit 67 according to the second embodiment. FIG. 8B is a diagram illustrating route information for each sensor.

  In the example of FIG. 8A, the unit time is 1 second. For each sensor communication terminal 1 (1-1 to 1-3), the number of sensor data per unit time received by the data collection server 3 is shown. For the gateways 2 (2-1, 2-2), the CPU utilization of each gateway 2 is shown.

  The status information managed by the device status information storage unit 67 is not limited to the above example. For example, the number of packet transfers, the number of received packets, the number of reception errors, the number of transmission errors, and the like of the gateway 2 may be used.

  Further, the device state information storage unit 67 may have a machine learning function of estimating a state after the present time by referring to past state information of each device. For example, when there is past history information, such as transition data of the number of sensor data transmissions transmitted by the sensor communication terminal 1-1 (sensor A), the past history information is used to determine the time of each time since the present time. The number of sensor data may be estimated. Alternatively, the number of packets passing through each gateway 2 may be estimated based on past route information for each sensor or past history information such as the number of packets for each sensor.

  The analysis unit 63 receives the operation state data of each device from the related monitoring target collection unit 65 and the sensor data of the monitoring data collection unit 62. The analysis unit 63 can also refer to each piece of device status information in the device status information storage unit 67. Further, the analysis unit 63 can also refer to the route information for each sensor stored in the route storage unit 66.

  The analyzing unit 63 analyzes the transition of the data value of the sensor data based on the collected sensor data and the device state based on the operating state data, as in the first embodiment. When a plurality of sensors are targeted, a transition of a data value of sensor data and a device state of each sensor are analyzed and monitored.

  [S205] The analysis unit 63 refers to the status information of each device (for example, each sensor communication terminal 1 and each gateway 2) stored in the device status information storage unit 67 to determine the related monitoring target corresponding to the analysis rule. It is detected (S205).

  Here, the analysis rule may include the collection rule, the notification rule, and the like described in the first embodiment. Here, an example of the state determination rule is illustrated.

  The state determination rule includes a condition for specifying that the related monitoring target device is in a state in which an abnormality has occurred or is in a state in which an abnormality is likely to occur, and a control content when the condition is met.

Hereinafter, an example of the state determination rule will be described. The number of state determination rules may be one or more. Here, a case where two state determination rules are set is exemplified.
"State determination rule 1": If the CPU usage rate is 80% or more, a control signal is transmitted to the sensor communication terminal such that the number of data transmissions becomes 1/2 for a predetermined time (for example, 3 seconds).
"State determination rule 2": If the number of packets passing through the gateway is 40 or more, a control signal is transmitted to the sensor communication terminal so that the number of data transmissions becomes 1/2 for a predetermined time (3 seconds).

  Note that the threshold values of the CPU usage rate, the threshold value of the number of passing packets, the value of the predetermined time, the control value of the number of data transmissions, and the like exemplified in “Status determination rule 1” and “Status determination rule 2” are each examples. Yes, but not limited to this.

  For example, in the case of the above example, the analysis unit 63 refers to the device status information in FIG. 8A and performs the related monitoring corresponding to one or both of “status determination rule 1” and “status determination rule 2”. Detect objects.

  Further, in the above example, the case where the number of data transmissions of the sensor communication terminal is halved is illustrated, but the present invention is not limited to this. Control contents such as restarting for failure recovery may be used.

  [S206] The analysis unit 63 specifies a sensor communication terminal connected to the related monitoring target device corresponding to the state determination rule. The analysis unit 63 can specify a sensor having a related monitoring target (for example, the gateway 2) on the route in consideration of route information of each sensor and the like. Thereby, the sensor communication terminal 1 to be controlled can be specified.

  [S207, S208, S209] The analysis unit 63 notifies a determination result according to an analysis rule (for example, a notification rule) in order to provide the determination contents of the processing of S205 and S206 to, for example, the data collection server 3.

  Here, the notification rule among the analysis rules may specify a notification condition including a destination for notifying the determination result, as in the first embodiment. For example, as an example of a notification rule, when there is one or a plurality of sensors having a related monitoring target corresponding to a state determination rule on a route, each determination result may be transmitted to the data collection server 3.

  In S209, when a plurality of sensors having the related monitoring target on the route can be specified, the determination result of each sensor is notified to a notification destination (for example, the data collection server 3 or the like).

  [S210] The analysis unit 63 determines whether or not the collection setting needs to be changed for each device to be controlled according to the state determination rule.

  [S211] Then, according to the state determination rule, when the collection setting needs to be changed for each device to be controlled, the control signal transmission unit receives an instruction from the analysis unit 63 and designates each device to be controlled as a destination. , And transmits a control signal having control contents in accordance with the state determination rule.

  [S212] Regarding the processes from S202 to S211, if the sensor has been activated, the process proceeds to S202, and the process is repeated. Otherwise, the process ends.

[Example of processing in S205 to S212]
Hereinafter, the processing of S205 to S212 by the analysis unit 63 will be described in accordance with the passage of time in FIG.

  From the route information in FIG. 8B, the number of packets passing through the gateway 2-1 is the total value of the number of sensor data of the sensor communication terminals 1-1 and 1-2, and passes through the gateway 2-2. The number of packets is the value of the number of sensor data of the sensor communication terminal 1-3.

[Time 1-2]
At the time between “time 1” and “time 2”, the CPU usage rates of the gateways 2-1 and 2-2 are “20%”, and thus do not correspond to the “state determination rule 1”. Also, the number of packets passing through the gateway 2-1 is "10" and the number of packets passing through the gateway 2-2 is also "10", and thus does not correspond to "state determination rule 2" (S205). In this case, the notification is not required in S207, and the collection setting change is not required in S209, so the process proceeds to S212.

[Time 3]
At the time “time 3”, the CPU usage rates of the gateways 2-1 and 2-2 are “20%” and “50%”, and thus do not correspond to the “state determination rule 1”. Since the number of packets passing through the gateway 2-2 is “10”, it does not correspond to “state determination rule 2”.

  However, since the number of packets passing through the gateway 2-1 is "40", the "state determination rule 2" applies to the gateway 2-1 (S205).

  Then, the analysis unit 63 refers to the route information and specifies the sensor communication terminals 1-1 and 1-2 connected to the gateway 2-1 (S206), and the analysis unit 63 determines the sensor communication terminal according to the notification rule. The respective determination results of the communication terminals 1-1 and 1-2 are transmitted to notification destinations such as the data collection server 3 (S207, S208, S209).

  Further, the analysis unit 63 transmits a control signal indicating that the number of times of transmission of sensor data is controlled to １ ／ to both of the sensor communication terminals 1-1 and 1-2 in accordance with “state determination rule 2”. (S210, S211).

  At this time, the sensors connected to the gateway 2-1 include two sensors A (sensor communication terminals 1-1) and two sensors B (sensor communication terminals 1-2). Therefore, one of the two sensors A and B is selected, and the control signals are sequentially transmitted to the sensor communication terminals of all the sensors.

  For example, after transmitting the control signal to the sensor communication terminal 1-1 of the sensor A, the control signal may be transmitted to the sensor communication terminal 1-2 of the sensor B. In order to transmit the control signal, a priority may be assigned in advance, and the control signal may be transmitted in order from a sensor (sensor communication terminal) having a higher priority.

  The sensor communication terminals 1-1 and 1-2 that have received the control signal as described above reduce the number of transmissions of sensor data to half. As a result, at “time 4”, the number of sensor data of the sensor communication terminals 1-1 and 1-2 is reduced by half, the number of packets passing through the gateway 2-1 is reduced, and the processing load is reduced.

[Time 4]
At “time 4”, the number of packets passing through the gateway 2-1 is “20”, which does not correspond to “state determination rule 2”. The number of packets passing through the gateway 2-2 is “10”, which does not correspond to “state determination rule 2”.

  However, since the CPU usage rate of the gateway 2-2 is “90%”, it corresponds to “state determination rule 1” (S205).

  Then, the analysis unit 63 identifies the sensor communication terminal 1-3 connected to the gateway 2-2 by referring to the route information (S206), and the analysis unit 63 according to the notification rule. The determination result of No. 3 is transmitted to a notification destination such as the data collection server 3 (S207, S208, S209).

  Further, the analysis unit 63 transmits a control signal indicating that the number of times of transmission of the sensor data is controlled to １ ／ according to the “state determination rule 1” (S210, S211). .

  The sensor communication terminal 1-3 that has received the control signal as described above reduces the number of transmitted sensor data to に. As a result, at “time 5”, the number of sensor data of the sensor communication terminal 1-3 is reduced by half, and the processing load on the gateway 2-2 is reduced.

  [Time 6] The analysis unit 63 transmits a control signal for returning the number of transmissions to the initial value to the sensor communication terminals 1-1 and 1-2 according to the state determination rule (S210, S211).

  [Time 7] The analysis unit 63 transmits a control signal for returning the number of transmissions to the initial value to the sensor communication terminal 1-3 according to the state determination rule (S210, S211).

(B-3) Effects of the Second Embodiment As described above, according to the second embodiment, by taking into account the sensor collection state of another sensor communication terminal that uses the same gateway as a relay device, an abnormal state can be achieved. It is possible to obtain an effect that which device is controlled can be controlled automatically and appropriately.

(C) Other Embodiments In the above-described first and second embodiments, various modified embodiments have been described, but the present invention can be applied to the following modified embodiments.

  (C-1) A configuration in which the above-described first embodiment and the second embodiment are combined may be adopted. That is, in the second embodiment, the description has been mainly given of controlling the collection setting from each sensor (sensor communication terminal) in consideration of the state of the gateway as a repeater. The reliability of the data may be derived, and the determination result may be transmitted to a notification destination according to the notification rule.

  (C-2) In the above-described first and second embodiments, the case where the monitoring server monitors the sensor data collection system has been described as an example. However, distributed processing is performed by distributing devices that perform each processing of the monitoring server. You may make it.

  (C-3) The description has been given of the case where the optimum rate is calculated by the monitoring server, but the calculation may be executed by a device other than the monitoring server, such as a sensor or a gateway.

  In the first and second embodiments, the case where the data collection system collects sensor data is described as an example. However, the data to be collected may be applied to data other than sensor data.

  10 data collection status monitoring system, 1 (1-1 to 1-3) sensor communication terminal, 2 (2-1, 2-2) gateway, 3 data collection server, 4 application, 5 monitor terminal , 6, 6A: monitoring server, 61: rule storage unit, 62: monitoring data collection unit, 63: analysis unit, 64: monitoring result transmission unit, 65: related monitoring target collection unit, 66: route storage unit, 67: device State information storage unit, 68 ... control signal transmission unit.

Claims (13)

A data collection status monitoring device that monitors a data collection status of a data collection system having one or more data communication terminals and a data collection device that collects data from each of the data communication terminals,
Related monitoring target information obtaining means for obtaining operating state information of each communication device between each data communication terminal and the data collection device,
Collection data acquisition means for acquiring collection data collected from each of the data communication terminals,
Analyzing means for analyzing the collection status of the collected data in consideration of the operation status of each communication device at the time of data collection in the data collection device based on at least the operation status information of each communication device and the collected data. A data collection status monitoring device, comprising:   The analysis means determines the collection status of the collected data by capturing the operation state information of each communication device and the time variation of each of the collected data, and derives the reliability of the collected data according to the determination result. The data collection status monitoring device according to claim 1, wherein   The said analysis means evaluates the reliability of the said collection data when the state of any of the said communication apparatuses is abnormal based on at least the operation state information of each said communication apparatus, low. 3. The data collection status monitoring device according to 2.   3. The method according to claim 2, wherein the analysis unit evaluates the reliability of the collected data when the data value is determined to be abnormal based on at least a time transition of the data value of the collected data. 3. The data collection status monitoring device according to 3.   The analyzing means may evaluate the reliability of the collected data to be low when the status of each communication device is abnormal among the collected errors of the collected data based on at least the time transition of the data value of the collected data. The data collection status monitoring device according to any one of claims 2 to 4, wherein   The data collection status monitoring device according to any one of claims 2 to 5, further comprising a monitoring result transmission unit that transmits a reliability of the collected data derived by the analysis unit to a predetermined notification destination. Path information storage means for holding the path information of the collected data from each of the sensor communication terminals to the data collection device for each collected data,
In the data collection system, operating state information of each of the communication devices existing on the path of each of the collected data collected by the data collection device, and collection of the collected data from each of the sensor communication terminals as collection destinations And device status information storage means for storing the status.
2. The data collection status monitoring device according to claim 1, wherein the analysis unit controls a collection condition of the collected data from each of the sensor communication terminals according to operation state information of each of the communication devices. 3.   The analyzing means, at least, when the collected data from the plurality of sensor communication terminals is relayed via the same communication device, by a predetermined method, the collection condition of each of the plurality of sensor communication terminals The data collection status monitoring device according to claim 7, wherein the data collection status is changed.   The analysis means changes a collection condition of the sensor communication terminal, which is a collection destination of the collected data, at least based on a comparison result between a processing load value of each of the communication devices relaying the collected data and a threshold value. 9. The data collection status monitoring apparatus according to claim 7, wherein   The said analysis means changes the collection conditions of the said sensor communication terminal which is the collection destination of the said collected data based on at least the amount of data or the number of packets which pass through each said communication apparatus, The Claims 7- characterized by the above-mentioned. 9. The data collection status monitoring device according to any one of 9.   The device status information storage unit holds information that predicts a collection status after the current time based on past operation status information of each communication device in the data collection system and past collection status from each of the sensor communication terminals. The data collection status monitoring device according to any one of claims 7 to 10, wherein: A data collection status monitoring method for monitoring a data collection status of a data collection system having one or more data communication terminals and a data collection device that collects data from each of the data communication terminals,
Related monitoring target information acquiring means acquires operating state information of each communication device between each of the data communication terminals and the data collection device,
Collecting data acquisition means for acquiring the collected data collected from each of the data communication terminals,
An analysis unit analyzes a collection state of the collected data in consideration of an operation state of each communication device at the time of data collection in the data collection device based on at least the operation state information of each communication device and the collected data. A data collection status monitoring method characterized in that: A data collection status monitoring system that monitors a data collection status of a data collection system having one or more data communication terminals and a data collection device that collects data from each of the data communication terminals,
Related monitoring target information obtaining means for obtaining operating state information of each communication device between each data communication terminal and the data collection device,
Collection data acquisition means for acquiring collection data collected from each of the data communication terminals,
Analyzing means for analyzing the collection status of the collected data in consideration of the operation status of each communication device at the time of data collection in the data collection device based on at least the operation status information of each communication device and the collected data. A data collection status monitoring system, comprising:

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