WO2018142598A1 - Sensor network management system and sensor network management method - Google Patents

Abstract

[Problem] To enable appropriate data interpolation in respect to a virtual sensor tied to a physical sensor in a sensor network, when the physical sensor is damaged. [Solution] A sensor network management system 1 is configured to include: a storage device 1000 that holds mapping information 1003 prescribing the relationship between a virtual sensor 20 which uses a physical sensor 10 and an application 30 which uses the virtual sensor 20, and physical sensor and application information 1001, 1002, respectively; and a calculation device 180 that identifies, on the basis of the mapping information 1003, an application using a damaged physical sensor via a virtual sensor, identifies, on the basis of the information 1001, 1002, an alternate physical sensor which satisfies a prescribed data interpolation condition 1005 relating to the application, and performs predetermined data interpolation processing relating to the virtual sensor, on the basis of the alternate physical sensor.

Description

Sensor network management system and sensor network management method

The present invention relates to a sensor network management system and a sensor network management method.

IoT (Internet of Things) that creates new value by combining information on various things that exist all over the world is starting to spread.

The above-mentioned IoT is a sensor that has a sensing function and a communication function in various places and industrial facilities, and manages a large amount of sensor data obtained from the sensor as big data. It is what you use. Therefore, in order to collect, manage, and use sensor data seamlessly, the mainstream is a network of sensors installed in various locations, and centralized management of the sensor data on a cloud platform. It is coming.

On the other hand, when the sensor owner and the data user are different, data is traded as a resource between the two. In that case, it is necessary to develop a mechanism for appropriately distributing the sensor data according to the purpose of the user.

In such a situation, a technique for optimizing the distribution of sensing data by performing data flow control in a sensor network has been proposed. That is, sensor-side metadata acquisition means that acquires sensor-side metadata that is information related to a sensor that outputs sensing data, and application-side metadata that is information related to an application that provides a service using the sensing data. App-side metadata acquisition means, matching means for extracting the sensor capable of providing sensing data that satisfies the application requirements by matching the sensor-side metadata and the application-side metadata, and managing the sensors A data flow control command generating device comprising: an instruction unit that transmits a data flow control command specifying the sensor extracted by the matching unit and the application to a sensor management device that performs the processing (Patent Document 1) See) It is draft.

Japanese Patent No. 5445722

As described above, as the IoT system becomes widespread, it is required to continuously provide necessary IoT data according to application requirements. However, in the prior art, it is difficult to appropriately deal with a physical sensor failure. For example, when a physical sensor fails, a virtual sensor associated with the physical sensor cannot be used from an application. As a result, the provision of appropriate data necessary for application operation stops.

Therefore, an object of the present invention is to provide a technique that enables appropriate data interpolation for a virtual sensor linked to a physical sensor in the event of a failure of the physical sensor in the sensor network.

The sensor network management system of the present invention that solves the above problems includes mapping information that defines a relationship between a virtual sensor that uses a physical sensor and an application that uses the virtual sensor in the sensor network, and each of the physical sensor and the application. A storage device that holds information, and an alternative physical sensor that identifies an application that uses a failed physical sensor that has failed via a virtual sensor based on the mapping information and satisfies data supplementation requirements that are defined in advance for the application And an arithmetic unit that executes a predetermined data complementing process related to the virtual sensor based on the alternative physical sensor, based on each information of the physical sensor and the application.

The sensor network management method of the present invention includes mapping information that defines a relationship between a virtual sensor that uses a physical sensor and an application that uses the virtual sensor in the sensor network, each piece of information on the physical sensor and the application, An information processing system including a storage device that stores a failure identifies an application that uses a failed physical sensor through a virtual sensor based on the mapping information, and satisfies data supplementation requirements defined in advance for the application An alternative physical sensor is specified based on each information of the physical sensor and the application, and a predetermined data complementing process related to the virtual sensor based on the alternative physical sensor is executed.

According to the present invention, in the event of a failure of a physical sensor in a sensor network, it is possible to appropriately supplement data for a virtual sensor associated with the physical sensor.

It is a figure which shows the structural example of the sensor network containing the sensor network management system of this embodiment. It is a figure which shows the structural example of the sensor network management computer of this embodiment. It is a figure which shows the structural example of the application mediation management computer of this embodiment. It is a figure which shows the structural example of the application management computer of this embodiment. It is a figure which shows Example 1 of the physical sensor meta information in this embodiment. It is a figure which shows Example 2 of the physical sensor meta information in this embodiment. It is a figure which shows the example of the application meta information in this embodiment. It is a figure which shows the example of the physical virtual mapping information in this embodiment. It is a figure which shows the example of the physical sensor operation information in this embodiment. It is a figure which shows the example of the missing data complement system management information in this embodiment. It is a figure which shows the example of the supplement requirement management information in this embodiment. It is a figure which shows the example of the application requirement management information in this embodiment. It is a figure which shows the example 1 of a flow of the sensor network management method of this embodiment. It is a figure which shows the example of the application requirement input screen in this embodiment. It is a figure which shows the example 2 of a flow of the sensor network management method of this embodiment. It is a figure which shows the example 3 of a flow of the sensor network management method of this embodiment. It is a figure which shows the structural example of the application management computer of this embodiment. It is a figure which shows the example 4 of a flow of the sensor network management method of this embodiment.

=== Example 1 ===
Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram showing a configuration example of a sensor network 5 including a sensor network management system 1 of the present embodiment. A sensor network management system 1 shown in FIG. 1 is a computer system for enabling appropriate data complementing for a virtual sensor 30 linked to a physical sensor 10 when a physical sensor 10 in the sensor network 5 fails.

Note that the sensor network 5 in the present embodiment is not particularly limited, but an IoT system is assumed as an example. The sensor network 5 that is an IoT system, the virtual sensor 20 appropriately selects and processes the data of the physical sensor 10 installed in a person, a device, a station, etc., and provides the output data as the processing result to the application 30. It is a system to be used.

In such a sensor network 5, the physical sensor 10 that actually performs sensing, the sensor network management computer 100 that acquires output data of the physical sensor 10 via the network 400, and the data supplement requirement of the application 30 are defined as the sensor network management computer 100. The application mediation management computer 200 that converts the information into information that can be understood by the application management computer 300 that implements the application 30 is capable of data communication via the network 400.

Note that the physical sensor 10 and the application 30 do not have to have a one-to-one correspondence. The output data of one physical sensor 10 may be used by a plurality of applications 30 via one or a plurality of virtual sensors 20, respectively. Alternatively, each output data of the plurality of physical sensors 10 may be used by one application 30 via one or a plurality of virtual sensors 20.

The sensor network management computer 100 virtualizes output data from a certain sensor, that is, a virtual sensor, by appropriately selecting, aggregating, or processing the output data of the physical sensor 10. The sensor network management computer 100 provides the output data of the virtual sensor 20 to the application 30.

Therefore, the application 30 can define and use a plurality of physical sensors 10 as one virtual sensor 20 according to the application. One virtual sensor 20 can also be used in a plurality of applications having similar uses.

In the sensor network 5 having such a configuration, the application manager 40 inputs application requirements on the application management computer 300 on which the application 30 operates. In this case, the application mediation management computer 200 appropriately converts the application requirement and notifies the sensor network management computer 100 of it. The application management computer 300 also plays a role of converting information received from the sensor network management computer 100 for the application manager 40.

Note that the application manager 40 described above is a person who has the authority to determine the requirements of the application 30 and may be a developer of the application 30 or a provider of the application 30.

--- Configuration example of each computer ---
The hardware configuration of each computer included in the sensor network management system 1 will be described below. FIG. 2 is a diagram illustrating a configuration example of the sensor network management computer 100 according to the present embodiment.

The sensor network management computer 100 according to the present embodiment combines the meta information of the physical sensor 10 and the meta information of the application 30, provides the virtual sensor 20 to the application 30, and provides an appropriate provision from an appropriate provider. Data flow control is performed so that data is distributed to the destination.

The sensor network management computer 100 includes a management communication interface 110, an input interface 120, an output interface 130, a magnetic storage device 160, a data input / output cache memory 170, an arithmetic device 180, and a program memory 1000, and a communication bus 190. It is the structure mutually connected through this. That is, the hardware configuration of the sensor network management computer 100 shown in this example can be realized by a general-purpose computer (PC).

Among the above-described configurations, the management communication interface 110 is an interface for inputting and outputting appropriate information. The input interface 120 is, for example, a keyboard or a mouse for an operator to input information. The output interface 130 is, for example, a general-purpose display for outputting information to the operator.

The magnetic storage device 160 is a storage device that stores basic software such as an operating system and applications. The data input / output cache memory 170 is a storage device that accumulates frequently used data and realizes high processing speed.

The arithmetic device 180 is a CPU that performs various calculations. The program memory 1000 is a storage space that stores programs necessary for the operation of the management computer 100.

Note that the program memory 1000 is a memory space implemented by a magnetic storage device or a volatile semiconductor memory. This program memory 1000 is used for the purpose of holding basic programs and information necessary for the operation of the sensor network management computer 100.

Here, the control program and control information stored in the program memory 1000 will be described. Details of the control information, that is, physical sensor meta information 1001, application meta information 1002, physical virtual mapping information 1003, physical sensor operation information 1004, and missing data complementing method management information 1005 will be described later.

On the other hand, as the above-mentioned control program, the path control program 1010, the physical virtual sensor matching program 1011, the physical sensor monitoring program 1012, the missing data complementing method switching program 1013, the data complementing program 1014, the alternative sensor search program 1015, the complementing value calculation program 1016 and a sensor information management program 1017 are included.

Among these, the path control program 1010 generates a data flow control command for distributing sensing data from the physical sensor 10 from an appropriate provider to an appropriate provider managed by the physical virtual mapping information 1003, and the physical sensor 10. Or it is a program transmitted to the predetermined management apparatus which manages it.

The physical virtual sensor matching program 1011 is a program that manages the correspondence between the physical sensor 10 and the virtual sensor 20 in the physical virtual mapping information 1003.

Also, the physical sensor monitoring program 1012 is a program that monitors the physical sensor 10 and detects an operating state such as a failure or re-operation due to replacement.

In addition, the missing data complementing method switching program 1013 compares the data complementing requirements input from the application mediation management computer 200 or the application management computer 300 with the characteristics of the physical sensor 10 indicated by the physical sensor meta information 1001, and the physical sensor 10. This is a program for determining a data complementing method to be applied to the corresponding virtual sensor 20 and updating the missing data complementing method management information 1005 at the time of failure.

Further, the data complementing program 1014 is a program that performs data complementing for the corresponding virtual sensor 20 based on the missing data complementing method management information 1005 when the physical sensor 10 fails.

Further, in the alternative sensor search program 1015, the physical sensor 10 recorded in the data acquisition destination physical sensor identification information 10052 shown in the missing data supplement method management information 1005 is stopped (the operation state 10042 of the physical sensor operation information 1004 is In this case, the physical sensor 10 closest to the physical sensor 10 is updated as data acquisition destination physical sensor identification information 10052 based on the physical sensor meta information 1001.

The processing in this alternative sensor search program 1015 may be performed collectively when the missing data complementing method switching program 1013 updates the missing data complementing method management information 1005.

Further, the complement value calculation program 1016 is a program that calculates a predicted value by applying past output data of the physical sensor 10 to an appropriate algorithm when the physical sensor 10 fails, and supplements missing data with the predicted value. is there.

The sensor information management program 1017 is a program for updating the configuration information stored in the sensor network management computer 100.

Subsequently, the configuration of the application mediation management computer 200 will be described. FIG. 3 is a diagram illustrating a configuration example of the application mediation management computer 200 according to the present embodiment.

The application mediation management computer 200 according to the present embodiment is interposed between the sensor network management computer 100 and the application management computer 300, thereby converting the internal processing of the sensor network management computer 100 into information that can be understood by the application manager 40. Is. Conversely, it also plays a role of converting the input of the application manager 40 into a format that can be processed by the sensor network management computer 100.

Such a sensor network management computer 200 includes a management communication interface 210, an input interface 220, an output interface 230, a magnetic storage device 260, a data input / output cache memory 270, an arithmetic device 280, and a program memory 2000. 290 are connected to each other via 290. That is, the hardware configuration of the application mediation management computer 200 shown in this example can be realized by a general-purpose computer (PC).

Among these, the management communication interface 210 is an interface for inputting and outputting management information. The input interface 220 is, for example, a keyboard or a mouse for an operator to input information.

The output interface 230 is, for example, a general-purpose display for outputting information to the operator. The magnetic storage device 260 is a storage device for storing basic software such as an operating system and applications. The data input / output cache memory 270 is a storage device for accumulating frequently used data and realizing high-speed processing.

The arithmetic unit 280 is a CPU that performs various calculations. The program memory 200 is a storage space for accumulating programs necessary for the operation of the management computer 200.

The program memory 2000 described above is a memory space implemented by a magnetic storage device or a volatile semiconductor memory, and is used for the purpose of holding basic programs and information necessary for the operation of the management computer 200.

Here, the control program and control information stored in the program memory 2000 will be described. Of these, details of the missing data supplement method management information 1005, the application requirement management information 3001, and the supplement requirement management information 2001, which are control information, will be described later. On the other hand, the above-mentioned control programs include a missing data complementing method management program 2010 and an application requirement mediation management program 2011.

Among these, the missing data complementing method management program 2010 is a program for updating the complementing requirement management information 2001 based on the complementing requirements of the application 30 input by the application administrator 40.

Further, the application requirement mediation management program 2011 is a program that converts the information on complementary requirements received from the application management computer 300 into a form that can be processed by the sensor network management computer 100. The application requirement mediation management program 2011 is a program that converts update information from the sensor network management computer 100 into an application viewpoint representation and notifies the application management computer 300 of the update information.

Subsequently, the application management computer 300 will be described. FIG. 4 is a diagram illustrating a configuration example of the application management computer 300 according to the present embodiment.

The application management computer 300 according to the present embodiment manages supplementary requirements for the application 30 that operates using the output data of the physical sensor 10. The application management computer 300 may be a server on which the application itself operates, or may be a computer different from the server on which the application is operating as a management computer. The supplementary requirement for the application 30 is input by the application manager 40.

The application management computer 300 includes a management communication interface 310, an input interface 320, an output interface 330, a magnetic storage device 360, a data input / output cache memory 370, an arithmetic device 380, and a program memory 3000, and a communication bus 390. Are connected to each other. That is, the hardware configuration of the management computer 300 shown in this example can be realized by a general purpose computer (PC).

Among these, the management communication interface 310 is an interface for inputting / outputting management information. The input interface 320 is, for example, a keyboard or a mouse for an operator to input information.

The output interface 330 is, for example, a general-purpose display for outputting information to the operator. The magnetic storage device 360 is a storage device that stores basic software such as an operating system and applications.

Also, the data input / output cache memory 370 is a storage device for accumulating frequently used data and realizing high-speed processing.

The arithmetic unit 380 is a CPU that performs various calculations. The program memory 3000 is a storage space that stores programs necessary for the operation of the management computer 300.

The program memory 3000 is a memory space implemented by a magnetic storage device or a volatile semiconductor memory, and is used for the purpose of holding basic programs and information necessary for the operation of the management computer 300.

Here, the control program and control information stored in the program memory 3000 will be described. Details of the application requirement management information 3001 and the application meta information 1002 that are control information will be described later.

On the other hand, the above-described control program includes an application requirement management program 3010. The application requirement management program 3010 is a program that receives an input of a complementary requirement from the application manager 40 and updates the complementary requirement to the application requirement management information 3001. In addition, when the sensor data cannot be acquired due to a failure of the physical sensor 10 or the like, the program notifies the application manager 40 by displaying an alert on the application requirement input screen.

--- Data configuration example ---
Subsequently, information used by the sensor network management system 1 of the present embodiment will be described. 5A and 5B show a configuration example of physical sensor meta information 1001 stored in the sensor network management computer 100 according to this embodiment.

The physical sensor meta information 1001 manages the installation location and usage of the physical sensor 10. The physical sensor meta information 1001 is updated when the physical sensor 10 is newly installed. Here, the meta information 1001a (FIG. 5A) of the physical sensor 10 itself and the detailed information 1001b (FIG. 5B) of an attribute of one item of the physical sensor 10 are shown together.

Note that the detailed information 1001b described above may be included in the meta information 1001a. Alternatively, the detailed information 1001b may be stored in an external device of the sensor network management computer 100 and referred to by the sensor network management computer 100 as necessary.

In this embodiment, the identification information of the physical sensor 10 managed by the sensor network management computer 100 is registered in the physical sensor identification information 1001a1. Further, the installation location 1001a2, the usage 1001a3, and the data type 1001a4 to be handled regarding the physical sensor 10 are also managed by the meta information 1001a. In addition, the price of sensing data of each physical sensor 10, that is, the price of output data may be managed by the meta information 1001a.

In such meta information 1001a, the information on the installation location 1001a2 is composed of information of type 1001a5, installation location identification information 1001a6, and position information 1001a7.

Among these, in the type 1001a5, attributes of installation targets such as “person”, “personal home”, “turbine” and the like are recorded. In addition, information for identifying the type 1001a5 is recorded in the installation location identification information 1001a6. For example, “user A”, “user B”, and the like are recorded as information for identifying a person.

Further, the position information 1001a7 is information indicating a position where the physical sensor 10 is installed. The position information 1001a7 may be a longitude or latitude value or an address.

Also, the usage 1001a3 is a value indicating the data usage usage of the physical sensor 10. For example, “commercial use” and “analysis use” are recorded in the use 1001a3.

In addition, in the data type 1001a4, the type of output data in the physical sensor 10 is recorded. In this data type 1001a4, the output data itself output from the physical sensor 10 may be recorded, or the data format may be recorded.

Further, the detailed information 1001b shown in FIG. 5B shows details of one item of the physical sensor meta information 1001a described above. For example, when the type 1001a5 of the installation location 1001a2 of the physical sensor meta information 1001a is “person”, the information is a collection of various attributes of the user whose identification information is recorded in the wearer identification information 1001b1. This attribute is information such as age 1001b2, gender 1001b3, and residence 1001b4. In addition to these attributes, each user's preference, purchase history of a predetermined product, and the like may be managed.

Next, the application meta information 1002 will be described. FIG. 6 shows a configuration example of the application meta information 1002 stored in the sensor network management computer 100 according to this embodiment. The application meta information 1002 manages sensor data required by the application 30, that is, information on output data of the virtual sensor 20.

The identification information of the application 30 that uses the output data of the physical sensor 30 via the virtual sensor 20 is registered in the application identification information 10021.

In the application meta information 1002, the application name 10022 of the application 30 and the sensor information 10023 required by the application 30 are managed in association with the application identification information 10021.

Of these, the application name 10022 records the name of the application such as “generator monitoring application”. The sensor information 10027 includes information on an installation location 10024, an application 10025, and a data type 10026. In these pieces of information, contents corresponding to the type 1001a5, the usage 1001a3, and the data type 1001a4 of the physical sensor meta information 1001a are recorded.

Subsequently, the physical virtual mapping information 1003 in the present embodiment will be described. FIG. 7 shows a configuration example of the physical virtual mapping information 1003 stored in the sensor network management computer 100 of the present embodiment.

The physical virtual mapping information 1003 is information for managing the correspondence between the physical sensor 10 and the virtual sensor 20 and the allocation status of the virtual sensor 20 to the application 30.

In this physical virtual mapping information 1003, the application identification information 10031 contains the identification information of the application 30. Further, identification information of the virtual sensor 20 assigned to the application 30 is recorded in the virtual sensor identification information 10032. In addition, information of the physical sensor 10 assigned to the virtual sensor 20 is recorded in the physical sensor information 10033.

The physical sensor information 10033 includes physical sensor identification information 10034 and an operation form 10033. When the physical sensor 10 associated with the application 30 in which the identification information is recorded in the application identification information 10031 is designated by matching of the meta information of the physical sensor 10 and the application 30, the operation form 1003 indicates “ “Normal operation” is recorded. On the other hand, when an alternative physical sensor 10 is assigned to the application 30 due to a failure of the originally assigned physical sensor 10 or the like, “alternative operation” is recorded in the operation mode 10033.

Next, the physical sensor operation information 1004 of this embodiment will be described. FIG. 8 shows a configuration example of physical sensor operation information 1004 stored in the sensor network management computer 100. The physical sensor operation information 1004 is a table for managing the operation information of the physical sensor 10.

In this physical sensor operation information 1004, physical sensor identification information 10041 contains identification information of the physical sensor 10 managed by the sensor network management computer 100. In the physical sensor operation information 1004, information on the operation state 10042 of the physical sensor 10, scheduled replacement date 10043, and replacement priority 10044 is recorded.

Among these, in the operation state 10042, “operation” is recorded when the physical sensor 10 is operating, and “stop” is recorded when it is stopped due to a failure or the like.

In addition, in the scheduled replacement date 10043, the scheduled replacement date of the failed physical sensor 10 is recorded. Note that, when performing periodic replacement, the scheduled replacement date is recorded even when the operating state 10042 is “operating”.

Also, the exchange priority 10044 records the exchange priority. For example, when the number of physical sensors 10 to be replaced at a time is limited due to maintenance man-hours or the like, the sensor with the higher priority is replaced. Such replacement priority may be determined by, for example, the characteristics of the application 30 associated with the physical sensor 10.

Since the physical sensor 10 associated with the application 30 recorded as “impossible to complement” in the method 10056 of the missing data complementing method management information 1005 cannot be complemented by another physical sensor 10 when the physical sensor fails, replacement is not possible. The priority 10044 may be recorded as “high”.

Subsequently, the missing data supplement method management information 1005 will be described. FIG. 9 shows a configuration example of the missing data interpolation method management information 1005 stored in the sensor network management computer 100 of the present embodiment.

This missing data complementing method management information 1005 is information for managing the data complementing method when the physical sensor 10 corresponding to the virtual sensor 20 fails in each virtual sensor 20. Since the data complementing method varies depending on the requirements of the application 30, the complementing method may be different even for the same physical sensor 10.

In the missing data complementing method management information 1005, the virtual sensor 20 in which the identification information is recorded in the virtual sensor identification information 10051 is associated with the physical sensor 10 in which the identification information is recorded in the physical sensor identification information 10052. The physical sensor 10 recorded here is obtained by the physical virtual matching program 1011 of the sensor network management computer 100 collating the physical sensor meta information 1011 and the application meta information 1002 and assigning the physical sensor 10 to the application 30. is there.

The physical sensor 10 specified here is the most appropriate physical sensor 10 managed by the network management computer 100. A complementing method when the sensor data cannot be acquired due to a failure of the physical sensor 10 is recorded in the data complementing method 10053.

The data complementing method 10053 includes information of a method 10054, alternative physical sensor identification information 10055, complementing data 10056, and a complementing value calculation method 10057.

Among these, in the method 10054, for example, when data complementation by past output data of the failed physical sensor 10 is optimum, “complement with the same sensor” is recorded, and other physical sensors acquiring similar data When it is optimal to switch to 10 and acquire data, “complement with other sensors” is recorded, and when it is not real-time data of a specific physical sensor 10, “complement is impossible” is recorded.

Also, in the alternative physical sensor identification information 10055, identification information of the alternative physical sensor 10 used when “complemented with other sensors” is recorded in the method 10054 is recorded. Further, in the supplement data 10056, what data is used is recorded when “complement with the same sensor” and “complement with another sensor” are recorded in the method 10054. For example, values such as “data for the past month” and “real time data” are recorded.

In addition, in the complementary value calculation method 10057, when the data is processed, the calculation method is recorded, and when the data is replaced as it is, “substitution” is recorded.

Next, the complementary requirement management information 2001 will be described. FIG. 10 shows a configuration example of the complementary requirement management information 2001 stored in the application mediation computer 200 of this embodiment.

This complementary requirement management information 2001 is created based on application requirement management information 3001 described later. However, if there is a blank in the application requirement management information 3001, the application mediation computer 200 complements the application 30 with reference to the characteristics of the application 30 and the configuration of the physical sensor 10, and determines a complementing method for each application 30.

In such complementary requirement management information 2001, information on the application type 20012, virtual sensor identification information 20013, and data supplement requirement 20014 corresponding to the application 30 whose identification information is recorded in the application identification information 20011 is managed.

Among these, the data supplement requirement 201414 includes a method 20015, alternative data 20061, and a supplement value calculation method 20017. In the method 20015, when the data supplement from the past output data of the failed physical sensor 10 is optimal, “complement with the same sensor” is recorded. Examples of the application 30 recorded in this way include those that use personal data for commercial purposes, and those that analyze the long-term operating status of equipment.

When it is optimal to switch to another physical sensor 10 that has acquired similar data and acquire the data, “complement with other sensors” is recorded. Examples of the application 30 recorded in this way include an application analyzing a user in units of a group and an application that measures air pollution and temperature.

“If it is not real-time data of a specific physical sensor 10, it will be recorded as“ Cannot be complemented ”. Examples of applications 30 recorded in this way include medical applications that require urgency, and those that monitor devices such as generators that are not allowed to stop. In such an example, since prediction from past data and substitution with other physical sensors cannot be performed, it is necessary to replace the failed physical sensor 10 with priority. Further, for example, in the case of medical use, when data cannot be acquired, other measures may be taken such as a doctor going to the user without waiting for replacement of the failed physical sensor 10.

Even in a generator that is not allowed to be stopped, if a plurality of physical sensors 10 are redundantly mounted on the monitoring target, they can be supplemented by redundant other sensors.

Also, in the alternative data 20016, acquisition data and alternative sensor requirements are recorded. For example, when “complement with the same sensor” is recorded in the method 20015, data requirements such as “data for the past month” are recorded in the alternative data 20061. In addition, when “complement with other sensors” is recorded in the method 20015, the alternative data 20061 includes “sensor data of users with similar attributes” and “sensor data of physical sensors within 200 meters from existing physical sensors”. The requirements of the alternative physical sensor 10 are recorded.

Note that if “completion is not possible” is recorded in the method 20015, since there is no alternative data, “Null” is recorded in the alternative data 20061.

Further, in the complementary value calculation method 20017, when data is processed, the calculation method is recorded, and when the data is replaced as it is, “substitution” is recorded.

Subsequently, the application requirement management information 3001 will be described. FIG. 11 shows a configuration example of the application requirement management information 3001 stored in the application management computer 300 of this embodiment.

This application requirement management information 3001 manages requirements related to a complementary method for the application 30. Such application requirement management information 3001 is configured based on requirements input by the application manager 40 from an application requirement input screen described later. The application manager 40 is not always familiar with the data supplement method. Since it is recorded within a range that the application manager 40 is aware of, there may be a blank.

In this application requirement management information 3001, the application name 30012, usage 30013, missing data supplement method 30014, correspondence urgency level 30015 when data cannot be acquired, and update date corresponding to the application 30 recorded in the application identification information 30011 Each information of 30016 is recorded.

Of these, the missing data supplement requirement 30014 includes a method 30017, alternative data 30018, and a complement value calculation method 20019.

Also, the urgency when data cannot be acquired is recorded in the urgency 30015 when data cannot be acquired, and “high” is recorded when the importance of the application is high.

Also, in the update date 30016, the date and time when the requirement input from the application requirement input screen is updated is recorded.

Here, the application requirement mediation management program 2010 of the application mediation management computer 200, which shows an example of generating the complement requirement management information 2001 from the application requirement management information 3001, is blank when the data of the complement requirement management information 2001 should exist. Make up for it. For example, the missing data supplement requirement 30014 of “AP2” in the application requirement management information 3001 is recorded as “Null”, but “analysis usage” is recorded in the usage usage 30013. With reference to “AP3”, it is determined that “complementation with other sensors” is possible. Similarly, the alternative data and the complementary value calculation method are also supplemented, and data of the data supplement requirement 201414 method, alternative data 20061, and complementary value calculation method 20017 of the supplement requirement management information 2001 are created.

--- Flow Example 1 ---
Hereinafter, the actual procedure of the sensor network management method according to the present embodiment will be described with reference to the drawings. Various operations corresponding to the sensor network management method described below are realized by programs executed by appropriate computers constituting the sensor network management system 1. These programs are composed of codes for performing various operations described below.

FIG. 12 is a diagram showing a flow example 1 of the sensor network management method in the present embodiment, and more specifically, is an example of a flowchart corresponding to the setting procedure of the data complementing method.

This flow is executed for each application 30. For example, when a new application 30 is released to the application management computer 300 or even when the application 30 is in operation, the flow changes according to a predetermined instruction from the application developer 40. Start.

In such a case, the application developer 40 inputs application requirements from, for example, a screen 1300 as shown in FIG. 13, and the application requirement management program 3010 updates the application requirement management information 3001 based on the application requirements.

FIG. 13 shows an example of an application requirement input screen in the application management computer 300 of this embodiment. The requirements for the application 30 are set for each application.

On the screen 1300, the application administrator 40 who operates the application management computer 300 uses the application name, usage, complement method when data is lost, data complement method, and emergency response when the data cannot be acquired. Enter the degree.

Note that such an application administrator 40 is not necessarily familiar with the data complementing method. For this reason, in the interface of the screen 1300, an item with “*” displayed is an essential item, while other items are optional.

The screen 1300 in FIG. 13 shows an example of information input related to a new application 30, but an example in which information is input in other situations such as when editing information related to a registered application 30 can also be assumed. In this case, for example, when the application mediation management computer 200 inquires about the requirement when a physical sensor fails (described later in FIG. 15), the previously input items are displayed in the input space.

In the screen 1300, the name of the application 30 is input as the application name. In the usage field, the usage field of the corresponding application is input. This field may be a pull-down format, and the application administrator 40 may specify from the displayed items.

In addition, the complement method when data cannot be acquired is input as the complement method when data is missing. Since the complement method is fixed, this field may be a pull-down format.

In addition, the data complementing method may switch the display contents based on the method specified in the complementing method when data is missing. For example, when “data complement from other sensors” is input as a complement method when data is missing, items related to the data complement method are output to the data complement method.

Also, the urgency level of response when data cannot be acquired is entered in the urgency level when data cannot be acquired. For example, when the mechanism of the sensor network 5 (IoT system) shown in FIG. 1 is provided as a service, the price may be set according to the degree of urgency when data cannot be acquired. That is, the application 30 that has purchased a high-priced service is preferentially dealt with when data acquisition is impossible.

Note that the application requirement input screen, that is, the content input from the screen 1300 is reflected in the application requirement management information 3001.

In connection with the input operation on the screen 1300 as described above, in the application management computer 300, the application requirement management program 3010 notifies the application mediation management computer 200 of the updated contents of the application requirements (step s101).

The application mediation management program 2011 of the application mediation management computer 200 receives the update of the application requirement from the application management computer 300 and updates the application requirement management information 3001 (FIG. 11) (step s102).

Subsequently, the missing data complementing method management program 2010 of the application mediation management computer 200 determines a complementing method for the application 30 based on the application requirements input by the application management computer 200, and updates the complementing requirement management information 2001 ( Step s103).

The above-mentioned missing data complementing method management program 2010 records the usage requirement 30013 and the emergency level 30015 when data cannot be acquired even if some information of the missing data supplementing requirement 30014 is blank in the application requirement management information 3001. Based on the missing information supplement requirement of the other application 30 having similar attributes, the data necessary for the data supplement requirement 200214 of the supplement requirement management information 2001 is supplemented from the obtained information.

Further, the missing data complementing method management program 2010 designates the virtual sensor 20 of the updated virtual sensor identification information 20012 in the complementing requirement management information 2001, and designates the virtual sensor 20 and its data complementing requirement as a sensor network management computer. 100 is notified (step s104).

The alternative sensor search program 1015 of the sensor network management computer 100 that has received the notification from the application mediation management computer 200, if the complement method of the virtual sensor 20 is a requirement to be complemented by another physical sensor 10, the received requirement is The physical sensor 10 that satisfies and is in operation in the operation state 10042 of the physical sensor operation information 1004 is searched. When a plurality of corresponding physical sensors 10 can be specified by the above-described search, the alternative sensor search program 1015 refers to the physical sensor meta information 1001 and has the most similar characteristics to the physical sensors 10 currently associated with each other. A thing is selected (step s105).

Here, the similarity of the physical sensor refers to the similarity of the installation location, application, and data type recorded in the physical sensor meta information 1001 and the similarity of the mounting destination indicated in the detailed information 1001b. If the application mediation management computer 200 designates “data with similar location information” or the like recorded in the substitute data 20061 of the supplementary requirement management information 2001, the selection is made according to the requirement.

In addition, in the physical sensor operation information 1004, when the operation states 10042 of all the physical sensors 40 that satisfy the data supplement requirement are “stopped”, the operation states 10042 of any physical sensor that satisfies the data supplement requirement are At the time of “in operation”, the physical sensor 10 is set as the alternative physical sensor 10. Note that processing for updating physical sensor information after replacement of the physical sensor 10 will be described later with reference to FIG.

In the first place, when there is no physical sensor 10 that satisfies the requirements, there is no physical sensor 10 that can be replaced when the physical sensor associated with the virtual physical mapping information 1003 fails. For this reason, the alternative sensor search program 1015 may set the replacement priority level 10043 of the physical sensor operation information 1004 of the physical sensor 10 to “high” and replace it preferentially when the physical sensor 10 fails.

Next, the missing data complementing method switching program 1013 of the sensor network management computer 100 performs missing data compensation based on the update information notified from the application mediation management computer 100 and the information of the alternative physical sensor 10 retrieved in step s105. The system management information 1005 is updated (step s106).

Further, the missing data complementing method switching program 1012 transmits the update contents of the missing data complementing method management information 1005 to the application mediation management computer 200 (step s107).

Meanwhile, the missing data complementing method management program 2010 of the application mediation management computer 200 updates the missing data complementing method management program 1005 based on the update information received from the sensor network management computer 100 (step s108).

In addition, the application requirement mediation management program 2011 notifies the application management computer 300 that the input application requirement has been reflected in the complementary method of the physical sensor 10 (step s109), and ends the process.

--- Flow example 2 ---
FIG. 14 shows an example of a flowchart expressing the update of information related to the physical sensor in the present embodiment. This flow is assumed to be performed when the physical sensor monitoring program 1011 of the sensor network management computer 100 detects a new addition or restoration of the physical sensor 10. Moreover, you may perform regularly irrespective of it.

In this case, the physical sensor monitoring program 1012 of the sensor network management computer 100 detects restoration or new addition of the physical sensor 10 (step s201). This detection is performed, for example, by making an inquiry about the life / death status toward each physical sensor 10 of the sensor network 5 at predetermined intervals.

Next, the sensor information management program 1017 designates the physical sensor 10 that has detected the change in the physical sensor operation information 1004, and updates the change content (step s202).

When a new physical sensor 40 is added, the sensor information management program 1017 acquires the meta information of the physical sensor 10 and updates the physical sensor meta information 1001.

Subsequently, in the missing data complementing method switching program 1013, the method 10054 of the data complementing method 10053 is recorded as “complemented with other sensors” in the missing data complementing method management information 1005, and the alternative physical sensor identification information 10055 is “ The virtual sensor 20 that is “Null” is searched (step s203).

The missing data complementing method switching program 1013 repeats the following for all virtual sensors 20 output by the above search (step s204).

In this case, the missing data complementing method switching program 1013 designates the virtual sensor 20 and requests the application intermediary management computer 200 to transmit the complementing requirements (step s205).

On the other hand, the application requirement mediation management program 2011 of the application mediation management computer 200 receives the request for the supplemental requirement transmission described above, refers to the supplementary requirement management information 2001, and reads the requirement recorded in the substitute data 20061 of the virtual sensor 20. And transmitted to the sensor network management computer 200 (step s206).

The missing data supplement method switching program 1013 of the sensor network management computer 100 receives the supplement requirement of the virtual sensor 20, refers to the physical sensor meta information 1001a and the detailed information 1001b, and is restored or added in the current physical sensor 10. Is determined to meet the requirements received from the application mediation management computer 200 (step s207).

As a result of the determination described above, when the complementary requirement is met (step s207: Yes), the missing data supplement method switching program 1013 uses the identification information of the physical sensor 10 as the alternative physical sensor identification corresponding to the corresponding virtual sensor 20. Information is entered into information 10053 (step s208).

On the other hand, as a result of the above determination, if the physical sensor 10 does not meet the requirements received from the application mediation management computer 200 (step s207: No), the missing data complementing method switching program 1013 transitions to step s209.

Also, the missing data complementing method management program 1013 notifies the application mediation management computer 200 of update information of the missing data complementing method management information 1005 (step s210).

Further, the missing data complementing method management program 2010 of the application mediation management computer 200 updates the missing data complementing method management information 1005 (step s211), and ends the processing.

Note that the processing in step s205 described above may be performed before the repetitive processing in step s204. Further, the application intermediary management computer 200 may be inquired together with the supplementary requirements of the virtual sensor 20 searched in step s203.

--- Flow example 3 ---
FIG. 15 shows a flow of complementing missing data when the physical sensor 10 fails in the present embodiment. In this case, the physical sensor monitoring program 1012 of the sensor network management computer 100 detects a failure of the physical sensor 10 (step s301). The physical sensor monitoring program 1012 that has detected the failure records “stopped” in the operation state 10041 of the physical sensor 10 in the physical sensor operation information 1004.

Further, the physical virtual sensor matching program 1011 of the sensor network management computer 100 refers to the physical virtual mapping information 1003, specifies the application 30 that uses the physical sensor 10, and acquires the sensor data in the application mediation management computer 200. It is notified that the state is disabled (step s302).

The application requirement mediation management program 2011 of the application mediation management computer 200 receives the sensor data non-acquisition notification, and determines whether a response to the physical sensor failure needs to be confirmed with the app administrator 40 by using a predetermined algorithm (step) s303).

As a reference for the above-mentioned determination, for example, the history of the update date 30015 of the application requirement management information 3001 is referred to. When there is frequent update, the sensitivity of the application administrator 40 to data supplementation is high, and at that moment There is a possibility that the data supplement requirement has been changed, and it can be assumed that it is determined that notification to the application management computer 300 is necessary. Alternatively, if the response urgency 30015 when data acquisition is impossible in the application requirement management information 3001 is “high”, the application administrator 40 may determine the data complementing method on the spot. For example, it may be determined that notification to 300 is necessary.

As a result of the above determination, when confirmation with the application administrator 40 is necessary (step s304: Yes), the application requirement mediation management program 2011 changes to the data supplement requirement of the application 30 for the application management computer 300. A confirmation request for whether there is any is made (step s305).

On the other hand, as a result of the above determination, when it is determined that confirmation with the application administrator 40 is unnecessary (step s304: No), the application requirement mediation management program 2011 shifts the process to step s308.

On the other hand, the application requirement management program 3010 of the application management computer 300 receives the confirmation request described above, displays an alert for confirmation request on a predetermined screen for the application administrator 40, for example, and inputs the requirement input to the application administrator 40. Notify you to do it.

When the application requirement needs to be changed, the application administrator 40 updates the data supplement requirement on the input screen shown in FIG. In this case, the application requirement management program 3010 manages the information input by the application administrator 40 as application requirement management information 3001, and notifies the update information to the application mediation management computer 200 (step s306).

The application requirement mediation management program 2011 of the application mediation management computer 200 receives the update information from the application management computer 300 and thereby updates the application requirement management information 3001 (step s307). Further, the application requirement mediation management program 2011 generates complementary requirement management information 2001 based on the updated application requirement management information 3001.

Subsequently, the missing data supplement method management program 2010 of the application mediation management computer 200 notifies the sensor network management computer 100 of the supplement method of the application 30 (step s308).

At this time, the missing data complementing method management program 2010 searches the substitute physical sensor identification information 1055 of the missing data complementing method management information 1005 for the failed physical sensor 10, and the physical sensor 10 is the substitute sensor. Notifies the sensor network management computer 100 together with the corresponding virtual sensor 20 and the requirement of the alternative data 20061 of the complementary requirement management information 2001.

In addition, when it determines with No by the above-mentioned step s304, ie, when confirmation to the application manager 40 is unnecessary, since there is no update from the application management computer 300, it is managed by the application requirement mediation management program 2011. Information on the current supplement method is transmitted.

Next, the missing data complementing method switching program 1013 of the sensor network management computer 100 receives the complementing method from the application mediation management computer 200, and thereby updates the missing data complementing method management information 1005 (step s309).

Further, the data supplement program 1014 performs data supplement based on the missing data supplement method management information 1005 (step s310).

As the above-described data complementing method, when the method 10054 of the missing data complementing method management information 1005 is recorded as “complement with other sensors”, the alternative sensor search program 1015 searches for the alternative sensor. Alternatively, when the method 10054 is recorded as “complement with the same sensor”, the complement value calculation program 1016 calculates the predicted value by the method recorded in the complement value calculation method 10057.

When the method 10054 of the missing data supplement method management information 1005 is recorded as “complement with other sensors”, the sensor information management program 1017 uses the physical sensor 10 that has failed in the physical sensor identification information 10034 of the physical virtual mapping information 1003. And the identification information of the replaced physical sensor 10 is overwritten (step s311).

Further, the alternative sensor search program 1015 uses the requirement information in the alternative physical sensor identification information 1055 of the missing data interpolation method management information 1005 based on the virtual sensor identification information and the requirement notified from the application mediation management computer 200 in step s308. And the physical sensor 10 whose operation state 10042 of the physical sensor operation information 1004 is “in operation” is searched and overwritten with the information of the physical sensor 10.

Also, the missing data complementing method management program 1013 notifies the application mediation management computer 200 of update information of the missing data complementing method management information 1005 (step s312).

On the other hand, the missing data complementing method management program 2010 of the application mediation management computer 200 updates the missing data complementing method management information 1005 (step s313) and ends the processing.

Note that when an inquiry is made to the application management computer 300 in step s305 and no response is received after a certain period of time, data cannot be provided to the application 30 during that period. In that case, the application mediation management computer 200 may cause the process to transition to step s308.

=== Example 2 ===
In the second embodiment, an example is shown in which the application management computer 300 controls the missing data complementing method at the time of a physical sensor failure via the sensor network management computer 100 without using the application mediation management computer 200.

FIG. 16 shows a configuration example of the application management computer 300 in the second embodiment. In this case, the application management computer 300 includes the missing data supplement method management program 2010, the application requirement mediation management program 2011, the supplement requirement management information 2001, and the data stored in the app mediation management computer 200 in the configuration of the first embodiment. Missing data complementing method management information 1005 is held.

As a result, the application management computer 300 converts the application requirement management information 3001 input from the application administrator 40 into the complementary requirement management information 2001 that manages an appropriate data complementing method at the time of failure of the physical sensor 10 for each application 30. Can be converted.

In the second embodiment, it may be assumed that the application administrator 50 can appropriately input the application requirement management information 3001. In this case, the application requirement mediation management program 2011 and the complementary requirement management information 2001 are not essential. When the physical sensor 10 fails, the sensor network management computer 100 can search for the alternative physical sensor 10 based on the application requirement management information 3001.

FIG. 17 shows a flow example corresponding to the missing data complementing procedure when the physical sensor 10 fails in the second embodiment. In this case, the physical sensor monitoring program 1012 of the sensor network management computer 100 detects a failure of the physical sensor 10 (step s401).

At this time, the physical sensor monitoring program 1012 records “stop” in the operation state 10040 of the physical sensor 10 in the physical sensor operation information 1004.

Subsequently, the physical virtual sensor matching program 1011 of the sensor network management computer 100 refers to the physical virtual mapping information 1003, specifies the application 30 that uses the physical sensor 10, and acquires the sensor data to the application management computer 300. It is notified that the state is disabled (step s402).

On the other hand, the application requirement management program 3010 of the application management computer 300 displays a confirmation request alert on a predetermined screen for the application administrator 40, for example, and notifies the application administrator 40 to input supplementary requirements.

In this case, the application administrator 40 updates the supplemental requirement on the screen shown in FIG. 13 when the supplemental requirement needs to be changed. The application requirement management program 3010 manages the supplementary requirement information input on this screen as application requirement management information 3001, and notifies the sensor network management computer 100 of the data supplementation requirement corresponding to the application 30 (step s403). .

In addition, when there is a blank in the data supplement requirement input from the application administrator 40, the application mediation management program 2011 of the application management computer 300 generates the supplement requirement management information 2001 by supplementing the necessary data in the blank portion. For the processing related to the blank portion, the method described in connection with step s103 of the flow example 1 may be similarly adopted.

Subsequently, the missing data complementing method switching program 1013 of the sensor network management computer 100 receives the complementing requirement from the application management computer 300, and thereby updates the missing data complementing method management information 1005 (step s404).

Next, the data supplement program 1014 performs data supplement based on the missing data supplement method management information 1005 (step s405).

As this data complementing method, when the method 10054 of the missing data complementing method management information 1005 is recorded as “complement with other sensors”, the alternative sensor search program 1015 searches for the alternative sensor. Alternatively, when the method 10054 is recorded as “complement with the same sensor”, the complement value calculation program 1016 calculates the predicted value by the method recorded in the complement value calculation method 10057.

When the method 10054 of the missing data complementing method management information 1005 is recorded as “complemented by another sensor”, the sensor information management program 1017 searches the physical sensor identification information 10034 of the physical virtual mapping information 1003 for the failed physical sensor 10. Then, the identification information of the replaced physical sensor 10 is overwritten (step s406).

Further, the alternative sensor search program 1015 satisfies the requirements in the alternative physical sensor identification information 1055 of the missing data supplement method management information 1005 based on the application and its requirements notified from the application management computer 300 in step s403. In addition, the physical sensor 10 in which the operation state 10042 of the physical sensor operation information 1004 is “in operation” is retrieved and overwritten with the physical sensor 10.

Subsequently, the missing data complementing method management program 1013 notifies the application management computer 100 of update information of the missing data complementing method management information 1005 (step s407).

On the other hand, the missing data complementing method management program 2010 of the application management computer 300 updates the missing data complementing method management information 1005 (step s408) and ends the process.

According to this embodiment, when a physical sensor fails, it is possible to perform appropriate data complementing according to application requirements for a virtual sensor associated with the physical sensor. In addition, by replacing data from other alternative physical sensors as much as possible in the event of a physical sensor failure, the failed physical sensor can be replaced efficiently.

That is, in the event of a physical sensor failure in the sensor network, appropriate data supplementation for the virtual sensor associated with the physical sensor becomes possible.

記載 At least the following will be made clear by the description in this specification. That is, in the sensor network management system of the present embodiment, the arithmetic device registers the alternative physical sensor in the mapping information as a virtual sensor usage target used by a corresponding application in the data complementing process. It is good.

According to this, it is possible to update the association between the physical sensor and the virtual sensor in the sensor network with information on an appropriate alternative physical sensor that can cope with the failure of the physical sensor. Eventually, based on this updated association, that is, mapping information, the virtual sensor can obtain output data from each physical sensor as an input, and can provide an appropriate output to the application. In other words, when a physical sensor in the sensor network fails, appropriate data interpolation for a virtual sensor associated with the physical sensor can be performed more efficiently.

Further, in the sensor network management system of the present embodiment, the storage device further holds information related to the operation status of each physical sensor, and the arithmetic device, when specifying the alternative physical sensor, Based on the information and the information on the operation status, the physical sensor installation location and the installation target at least one of the attributes coincides with the failed physical sensor, and the active physical sensor is specified as an alternative physical sensor. There may be.

According to this, it becomes possible to accurately and efficiently specify an alternative physical sensor having the same attributes as the failed physical sensor and having no problem in operation. As a result, in the event of a physical sensor failure in the sensor network, appropriate data supplementation for the virtual sensor associated with the physical sensor can be performed more efficiently.

Further, in the sensor network management system of the present embodiment, the arithmetic device, when the data supplement requirement defines a supplement method using past output data in the fault physical sensor, The alternative data may be calculated by applying the output data to a predetermined algorithm, and a predetermined data complementing process is executed for the virtual sensor using the alternative data.

According to this, it is possible to cope with the situation where the alternative physical sensor cannot be adopted, and to calculate and provide data for the virtual sensor from the past output data of the failed physical sensor. As a result, in the event of a physical sensor failure in the sensor network, appropriate data supplementation for the virtual sensor associated with the physical sensor can be performed more efficiently.

Further, in the sensor network management system of the present embodiment, the arithmetic device performs the data supplement processing when the data supplement requirement specifies that data supplement is impossible or when the alternative physical sensor cannot be specified. The alternative physical sensor may be newly specified in response to the restoration of the failed physical sensor in the sensor network or the addition of a new physical sensor having the same specifications as the failed physical sensor, without executing.

According to this, since the fault physical sensor has a special specification and there is no substitute in the first place, it corresponds to the situation where data supplement is not desired, avoids unnecessary processing, and responds to recovery of the fault physical sensor, etc. Quick response. As a result, in the event of a physical sensor failure in the sensor network, appropriate data supplementation for the virtual sensor associated with the physical sensor can be performed more efficiently.

Further, in the sensor network management system of the present embodiment, when the computing device identifies an application that uses a failed physical sensor that has failed via a virtual sensor, the virtual sensor becomes unusable for the application. It is also possible to further execute a process of notifying that.

According to this, the application side avoids the predetermined based on the output data from the virtual sensor in advance, and the sensor network management system side also performs unnecessary data conversion based on the association between the physical sensor and the virtual sensor. It can be avoided. As a result, in the event of a physical sensor failure in the sensor network, appropriate data supplementation for the virtual sensor associated with the physical sensor can be performed more efficiently.

In the sensor network management system according to the present embodiment, the arithmetic device transmits a screen for accepting designation of the data supplementation requirement to the management terminal of the application, and acquires data supplementation requirement information from the management terminal. It is also possible to further execute the processing.

According to this, it is possible to accept the specification of the data supplement requirement from the application administrator or the like at any time, and execute the data supplement processing corresponding to this. As a result, in the event of a physical sensor failure in the sensor network, appropriate data supplementation for the virtual sensor associated with the physical sensor can be performed more efficiently.

Further, in the sensor network management method of the present embodiment, the information processing system may register the alternative physical sensor in the mapping information as a virtual sensor usage target used by a corresponding application in the data complementing process. Good.

Further, in the sensor network management method of the present embodiment, the information processing system further holds information on the operation status of each physical sensor in the storage device, and when specifying the alternative physical sensor, the information on the physical sensor and Based on the operation status information, at least one of the attributes of the physical sensor installation location and the installation target may coincide with the failed physical sensor, and the active physical sensor may be identified as an alternative physical sensor. . Further, in the sensor network management method of the present embodiment, when the information supplementation system defines a complementation method using past output data in the faulty physical sensor, the data complementation requirement of the faulty physical sensor Alternative data may be calculated by applying past output data to a predetermined algorithm, and a predetermined data complementing process may be executed for the corresponding virtual sensor using the alternative data.

Further, in the sensor network management method of the present embodiment, when the information processing system specifies that the data supplement requirement stipulates that data supplement is impossible, or when the alternative physical sensor cannot be specified, the data supplement processing The replacement physical sensor may be specified again according to the restoration of the failed physical sensor in the sensor network or the addition of a new physical sensor having the same specifications as the failed physical sensor.

Further, in the sensor network management method of the present embodiment, when the information processing system identifies an application that uses a faulty physical sensor in which a failure has occurred via a virtual sensor, the virtual sensor is unusable for the application. It is also possible to further execute a process of notifying that it has become.

In the sensor network management method of the present embodiment, the information processing system transmits a screen for accepting designation of the data supplementation requirement to the management terminal of the application, and the data supplementation requirement information is transmitted from the management terminal. The acquisition process may be further executed.

DESCRIPTION OF SYMBOLS 1 Sensor network management system 5 Sensor network 10 Physical sensor 20 Virtual sensor 30 Application 100 Sensor network management computer 110,210,310 Management communication interface 120,220,320 Input interface 130,230,330 Output interface 160,260, 360 Magnetic recording device 170, 270, 370 Data input / output cache memory 180, 280, 380 Arithmetic device 190, 290, 390 Bus 200 Application mediation management computer 300 Application management computer 400 Network 1000, 2000, 3000 Program memory 1001 Physical sensor meta information 1002 Application meta information 1003 Physical virtual mapping information 1004 Physical sensor operation information 1005 Missing Data complement method management information 1010 Path control program 1011 Physical virtual sensor matching program 1012 Physical sensor monitoring program 1013 Missing data complement method switching program 1014 Data complement program 1015 Alternative sensor search program 1016 Complement value calculation program 1017 Sensor information management program 2001 Supplement requirement management Information 2010 Missing data complementing method management program 2011 Application requirement mediation management program 3001 Application requirement management information 3010 Application requirement management program

Claims (14)

1. A storage device that holds mapping information that defines a relationship between a virtual sensor that uses a physical sensor in a sensor network and an application that uses the virtual sensor; and each piece of information about the physical sensor and the application;
   Based on the mapping information, an application that uses a faulty physical sensor in which a failure has occurred is identified based on the mapping information, and an alternative physical sensor that satisfies data supplementation requirements defined in advance with respect to the application is assigned to each of the physical sensor and the application. An arithmetic device that is specified based on information and executes a predetermined data complementing process related to the virtual sensor based on the alternative physical sensor;
   A sensor network management system comprising:
2. The arithmetic unit is:
   In the data complementing process, the alternative physical sensor is registered in the mapping information as a virtual sensor usage target used by the corresponding application.
   The sensor network management system according to claim 1.
3. The storage device
   It further holds information about the operating status of each physical sensor,
   The arithmetic unit is:
   At the time of specifying the alternative physical sensor, based on the information on the physical sensor and the information on the operation status, at least one attribute of the installation location and the installation target of the physical sensor matches the failed physical sensor and is in operation The physical sensor is specified as an alternative physical sensor.
   The sensor network management system according to claim 1.
4. The arithmetic unit is:
   When the data supplement requirement stipulates a supplement method using past output data in the fault physical sensor, the substitute data is calculated by applying the past output data of the fault physical sensor to a predetermined algorithm, A predetermined data complementing process is executed for the corresponding virtual sensor by the substitute data.
   The sensor network management system according to claim 1.
5. The arithmetic unit is:
   When the data supplement requirement stipulates that data supplement is impossible, or when the alternative physical sensor cannot be identified, the data supplement processing is not executed, and the failure physical sensor is restored or failed in the sensor network. According to the addition of a new physical sensor of the same specification as the physical sensor, the replacement physical sensor is specified again.
   The sensor network management system according to claim 1.
6. The arithmetic unit is:
   When an application that uses a faulty physical sensor in which a defect has occurred is identified via a virtual sensor, the application further executes a process of notifying the application that the corresponding virtual sensor has become unusable.
   The sensor network management system according to claim 1.
7. The arithmetic unit is:
   A screen for accepting designation of the data supplement requirement is transmitted to the management terminal of the application, and a process of acquiring data supplement requirement information from the management terminal is further executed.
   The sensor network management system according to claim 1.
8. Information processing system including a storage device that holds mapping information that defines a relationship between a virtual sensor that uses a physical sensor and an application that uses the virtual sensor in a sensor network, and information about the physical sensor and the application But,
   Based on the mapping information, an application that uses a faulty physical sensor in which a failure has occurred is identified based on the mapping information, and an alternative physical sensor that satisfies data supplementation requirements defined in advance with respect to the application is assigned to each of the physical sensor and the application. Specifying based on the information, and executing a predetermined data complementing process related to the virtual sensor based on the alternative physical sensor,
   A sensor network management method characterized by the above.
9. The information processing system is
   In the data complementing process, the alternative physical sensor is registered in the mapping information as a usage target of a virtual sensor used by the corresponding application.
   9. The sensor network management method according to claim 8, wherein:
10. The information processing system is
    In the storage device, further holding information on the operating status of each physical sensor,
    At the time of specifying the alternative physical sensor, based on the information on the physical sensor and the information on the operation status, at least one attribute of the installation location and the installation target of the physical sensor matches the failed physical sensor and is in operation Identify physical sensors as alternative physical sensors,
    9. The sensor network management method according to claim 8, wherein:
11. The information processing system is
    When the data supplement requirement stipulates a supplement method using past output data in the fault physical sensor, the substitute data is calculated by applying the past output data of the fault physical sensor to a predetermined algorithm, A predetermined data complementing process is executed for the corresponding virtual sensor by the substitute data,
    9. The sensor network management method according to claim 8, wherein:
12. The information processing system is
    When the data supplement requirement stipulates that data supplement is impossible, or when the alternative physical sensor cannot be identified, the data supplement processing is not executed, and the failure physical sensor is restored or failed in the sensor network. According to the addition of a new physical sensor having the same specifications as the physical sensor, the replacement physical sensor is specified again.
    9. The sensor network management method according to claim 8, wherein:
13. The information processing system is
    When an application that uses a faulty physical sensor that has failed via a virtual sensor is identified, a process for notifying the application that the corresponding virtual sensor has become unusable is further executed.
    9. The sensor network management method according to claim 8, wherein:
14. The information processing system is
    A screen for accepting designation of the data supplement requirement is transmitted to the management terminal of the application, and further executes processing for obtaining data supplement requirement information from the management terminal;
    9. The sensor network management method according to claim 8, wherein:

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