JP2013162258A - Radio communication node, game execution device, and mediation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide technology for promoting the practical use of a sensor network and the spread of its use.SOLUTION: A radio communication node comprises: power feeding means for generating electric power based on natural energy and feeding generated power to targets in the own node which need to be supplied with power; mode switching means for switching modes from one to another; first communication means which, when in normal mode, connects to a public communication network to communicate; MMI means which, when in accident mode, is operated by power supplied from the power feeding means, and which accepts information from a person as its input and presents information to a person; radio communication means which, when in accident mode, is operated by power supplied from the power feeding means, and which forms a radio communication network with other radio communication nodes present around the own node and transmits or receives information handled by the MMI means through the radio communication network; and evaluation means which lets the radio communication means and the MMI means execute operations in accident mode according to a predetermined schedule even during normal mode and evaluates the result of the operations executed.

Description

  The present invention relates to a sensor network.

  The sensor network is a technology that enables collection, management, and seamless use of sensing data by installing devices (nodes) having a sensor function and a wireless communication function in various places and networking them. If a sensor network is realized, it will be easy to quickly and accurately grasp the situation of every place from anywhere, so it can be applied to industrial fields such as manufacturing sites and logistics, as well as social systems such as transportation and various infrastructures. It is expected to have a wide range of applications in fields related to life such as medicine and education.

  By the way, there are some issues to be solved for the realization and practical application of sensor networks. One is to ensure availability and reliability to operate nodes (sensors) installed in various locations 24 hours a day, 365 days a year, and the other is the cost required to install a large number of nodes comprehensively. (Or motivational). These exist in particular as problems that cannot be avoided in the spread and expansion of sensor networks.

  In order to solve these problems, the present inventor has repeatedly studied the system and service mechanism related to the sensor network. During the study, I got the idea that it would be possible to improve the utility value of a node by having each node in the sensor network play different roles during normal times and during disasters. For example, a node that has been operating for another purpose (original purpose) during normal times can function as an information infrastructure or information station in the event of a disaster. In addition, taking advantage of the property that each node is connected to the position coordinates (installation position) in the real world, the node is used as a checkpoint for a game in the real world (for example, a walk rally game). Various things are also conceivable.

  As a prior art related to information infrastructure at the time of a disaster, for example, a system disclosed in Japanese Patent Application Laid-Open No. 2008-295997 is known. This system is for confirming safety during disasters and notifying disaster prevention information. The central station and the master station are connected by a wireless line and a redundant network, and the master station and multiple slave stations are wireless ad hoc networks. Is characterized by the formation of The alarm transmitted from the central station is distributed to each slave station via the wireless ad hoc network via the master station. Safety information input at each slave station is collected at the central station via the master station. However, the technology of Patent Document 1 is different from the sensor network in the technical field, and cannot be applied to the sensor network as it is. Further, the one disclosed in Patent Document 1 is a system dedicated to disasters and is not supposed to be used in normal times.

  On the other hand, Japanese Patent Application Laid-Open No. 2007-190344 discloses a system for performing a walk rally game in a virtual world using a personal computer and a pedometer. Specifically, when the user connects the pedometer to the personal computer, the pedometer data is automatically transmitted to a predetermined website, and the walking distance / arrival point / remaining distance of the user is calculated on the website. It is displayed on the user's personal computer together with the map data. However, this system does not use a node installed in the real world and cannot be applied to a sensor network.

JP 2008-299597 A JP 2007-190344 A

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a technique for promoting the practical use and spread of a sensor network.

  In order to achieve the above object, the present invention employs the following configuration.

  The wireless communication node according to the first aspect of the present invention includes a power supply means for generating power by natural energy and supplying the power to a power supply target in the own node, and a range of a plurality of modes including a normal mode and a disaster mode The mode switching means for switching the mode in the mode, the first communication means for communicating by connecting to the public communication network in the normal mode, and the person operating by the power supplied from the power feeding means in the disaster mode MMI means for inputting information and presenting information to a person, and in a disaster mode, it operates with power supplied from the power supply means, and other wireless communication nodes and wireless communication networks existing around the own node A wireless communication means for transmitting and receiving information handled by the MMI means through the wireless communication network, and a predetermined scan even in the normal mode. Joule, the wireless communication means and to execute the operation in the disaster mode to the MMI unit, those comprising an evaluating means for evaluating the operation result.

  The wireless communication node according to the second aspect of the present invention includes a power supply unit that supplies power obtained from an external power source that generates power to a power supply target in the own node, and a range of a plurality of modes including a normal mode and a disaster mode The mode switching means for switching the mode in the mode, the first communication means for communicating by connecting to the public communication network in the normal mode, and the person operating by the power supplied from the power feeding means in the disaster mode MMI means for inputting information and presenting information to a person, and in a disaster mode, it operates with power supplied from the power supply means, and other wireless communication nodes and wireless communication networks existing around the own node A wireless communication means for transmitting and receiving information handled by the MMI means through the wireless communication network, and a predetermined schedule even in the normal mode , The wireless communication means and to execute the operation in the disaster mode to the MMI unit, those comprising an evaluating means for evaluating the operation result.

  The wireless communication node according to the third aspect of the present invention includes a power supply means for generating power by natural energy and supplying the power to a power supply target in the own node, and a range of a plurality of modes including a normal mode and a disaster mode Mode switching means for performing mode switching in the network, first communication means for connecting to and communicating with a public communication network in the normal mode, and operating in response to power supplied from the power supply means in the disaster mode. Sensing means for sensing the state of the surrounding environment, and in the disaster mode, it operates with the power supplied from the power supply means to form a wireless communication network with other wireless communication nodes existing around the own node, Wireless communication means for transmitting and receiving information obtained by the sensing means through the wireless communication network; In schedule, it said wireless communication means and to execute the operation in the disaster mode to the sensing means, but comprising an evaluating means for evaluating the operation result.

A wireless communication node according to a fourth aspect of the present invention includes a power supply unit that supplies power obtained from an external power source that generates power to a power supply target in the node, and a range of a plurality of modes including a normal mode and a disaster mode Mode switching means for performing mode switching in the network, first communication means for connecting to and communicating with a public communication network in the normal mode, and operating in response to power supplied from the power supply means in the disaster mode. Sensing means for sensing the state of the surrounding environment, and in the disaster mode, it operates with the power supplied from the power supply means to form a wireless communication network with other wireless communication nodes existing around the own node, Wireless communication means for transmitting and receiving information obtained by the sensing means through the wireless communication network, and a predetermined schedule even in a normal mode. In the the radio communication means and the sensing means to execute the operation in the disaster mode, and evaluation means for evaluating the operation result, as it has.

  The wireless communication node according to the fifth aspect of the present invention includes a power supply means for generating power by natural energy and supplying the power to a power supply target in the own node, and a range of a plurality of modes including a normal mode and a disaster mode The mode switching means for switching the mode in the mode, the first communication means for communicating by connecting to the public communication network in the normal mode, and the person operating by the power supplied from the power feeding means in the disaster mode MMI means for inputting information and presenting information to a person, sensing means for sensing the state of the surrounding environment of the own node by operating with power supplied from the power supply means in the disaster mode, In the mode, it operates with the power supplied from the power supply means to form a wireless communication network with other wireless communication nodes existing around the node. A wireless communication means for transmitting and receiving information handled by the MMI means and information obtained by the sensing means through the wireless communication network; and the wireless communication means, the MMI means, and the sensing means in a normal schedule even in a normal mode. And an evaluation means for executing the operation in the disaster mode and evaluating the operation result.

  A wireless communication node according to a sixth aspect of the present invention includes a power supply unit that supplies power obtained from an external power source that generates power to a power supply target in the node, and a range of a plurality of modes including a normal mode and a disaster mode The mode switching means for switching the mode in the mode, the first communication means for communicating by connecting to the public communication network in the normal mode, and the person operating by the power supplied from the power feeding means in the disaster mode MMI means for inputting information and presenting information to a person, sensing means for sensing the state of the surrounding environment of the own node by operating with power supplied from the power supply means in the disaster mode, In the mode, it operates with the power supplied from the power supply means to form a wireless communication network with other wireless communication nodes existing around its own node, and the M The wireless communication means for transmitting and receiving information handled by the I means and the information obtained by the sensing means through the wireless communication network, and the wireless communication means, the MMI means, and the sensing means in a normal schedule in a predetermined schedule. Evaluation means for executing an operation in the hour mode and evaluating the operation result.

  The wireless communication node according to the seventh aspect of the present invention includes a power supply means for generating power by natural energy and supplying the power to a power supply target in the own node, and a range of a plurality of modes including a normal mode and a disaster mode The mode switching means for switching the mode in the mode, the first communication means for communicating by connecting to the public communication network in the normal mode, and the person operating by the power supplied from the power feeding means in the disaster mode MMI means for inputting information and presenting information to a person, and an ID reading means for reading ID information from an ID storage medium possessed by a person by operating with power supplied from the power supply means in a disaster mode In the disaster mode, the wireless communication network operates with the power supplied from the power supply means, and other wireless communication nodes and wireless communication networks existing around the own node. And wireless communication means for transmitting and receiving information handled by the MMI means and information read by the ID reading means through the wireless communication network, and the wireless communication means and the MMI means in a predetermined schedule even in a normal mode. And an evaluation means for causing the ID reading means to execute the operation in the disaster mode and evaluating the operation result.

The wireless communication node according to the eighth aspect of the present invention includes a power supply means for supplying power obtained from an external power source for generating power to a power supply target in the own node, and a range of a plurality of modes including a normal mode and a disaster mode The mode switching means for switching the mode in the mode, the first communication means for communicating by connecting to the public communication network in the normal mode, and the person operating by the power supplied from the power feeding means in the disaster mode MMI means for inputting information and presenting information to a person, and an ID reading means for reading ID information from an ID storage medium possessed by a person by operating with power supplied from the power supply means in a disaster mode In the disaster mode, it operates with the power supplied from the power supply means to form a wireless communication network with other wireless communication nodes existing around its own node. The wireless communication means for transmitting and receiving information handled by the MMI means and the information read by the ID reading means through the wireless communication network, and the wireless communication means, the MMI means, and the ID reading in a predetermined schedule even in the normal mode. Evaluation means for causing the means to execute the operation in the disaster mode and evaluating the operation result.

  A program according to the present invention is a program for controlling the wireless communication node, wherein the wireless communication node is controlled at least when the mode switching unit is in a disaster mode, by controlling the wireless communication unit. It functions as means for forming a wireless communication network and the evaluation means.

  A game execution device according to the present invention is a game execution device that executes a game using a plurality of wireless communication nodes arranged at different points and a plurality of mobile objects storing different IDs. Receiving means for receiving the ID read by each of the plurality of wireless communication nodes from the moving body as information on the time at which the reading was performed, as passing point data, and passing point data collected by the receiving means, ID, the position of the wireless communication node that has read the ID, and the time when the ID is read, the extraction means for extracting the movement path of each mobile body, and the movement path obtained by the extraction means Comparison means for generating a comparison result by comparing between a plurality of mobile objects, and applying the comparison result generated by the comparison means to a game rule, A result data generating means for forming, in which comprises a.

  An intermediary device according to the present invention is an intermediary device that mediates provision of passing point data between the wireless communication node and the game execution device, and is provided by a provider who provides information obtained at the wireless communication node Provides provision condition database that stores data that defines conditions, use condition database that stores data that defines usage conditions on the user side that uses the received information, and passing point data obtained at the wireless communication node A condition comparison means for comparing the provision condition of a possible provider with the use condition of a user who desires to use the passing point data in the game execution device, and determining whether the condition is satisfied; and An intermediary means for transmitting the passing point data obtained from the wireless communication node to the game execution device only when the comparison means determines that the condition is met. That.

The configuration of the present invention described above has the following advantages. In other words, since the wireless communication node can be operated in a plurality of modes including the normal mode and the disaster mode, the use opportunity and added value of the wireless communication node can be increased. The cost-effectiveness related to can be enhanced. In addition, even if power supply means for generating power using natural energy or power supply means for obtaining power from an external power source that generates power is provided in each wireless communication node, commercial power can no longer be used due to a power failure or the like. Since the operation of the wireless communication node can be maintained, the availability and reliability of the wireless communication node and the entire sensor network can be improved. In addition, in the event of a disaster, each wireless communication node forms a wireless communication network with other wireless communication nodes in the surrounding area to send and receive various types of information, making it impossible to use the public communication network due to power outages or disconnections Even under circumstances, information can be acquired from each wireless communication node and information can be distributed to each wireless communication node, and can be used as an information infrastructure or information station at the time of a disaster. Further, even in the normal mode, the operation test in the disaster mode is automatically performed according to a predetermined schedule, so that a state in which a necessary function at the time of the disaster can be appropriately executed can be maintained. This also contributes to improving the reliability of the wireless communication node and the entire sensor network.

  Further, according to the configuration of the game execution device of the present invention, the use opportunity and added value of the wireless communication node can be increased by utilizing the wireless communication node of the present invention for a game. Since each wireless communication node is physically installed at a different point, it is easy to create highly competitive and interesting games such as game participants moving in the real world to compete. is there.

  Also, by placing an intermediary device between the wireless communication node and the game execution device, the data obtained at the wireless communication node can be used by unintended persons of the provider or used unintentionally. Therefore, sound and safe use of sensing data is promoted.

  The present invention can be specified as a wireless communication node (or wireless communication device, sensor device), a game execution device, or an intermediary device including at least a part of the above means. It can also be specified as a sensor network system composed of The present invention can also be specified as a wireless communication node control method, a game execution device control method, or an intermediary device control method including at least a part of the above-described processing. It can also be specified as a control program to be executed or a recording medium storing the control program. Each of the above processes and means can be freely combined as long as no technical contradiction occurs.

  According to the present invention, it is possible to promote the practical use and spread of sensor networks.

The figure for demonstrating the whole structure and normal operation | movement of a sensor network system. The figure for demonstrating the whole structure of a sensor network system, and the operation | movement at the time of a disaster. The figure for demonstrating a camp social game. (A) is an example of the data structure of the personal management information of a game participant, (b) is an example of the data structure of the movement history data totaled by the application server. The flowchart of the detection process of the inclusion relationship between closed loops. The figure which shows the position state calculated based on the inclusive relationship between closed loops. The flowchart of the process which calculates the acquisition point in each participant or each participating group unit. The example of the presentation screen of the intermediate state of a camp social game. The figure for demonstrating the structure and operation | movement of a disaster response server. The functional block diagram which shows the structure of a mediation server. The figure for demonstrating the function and operation | movement of a contract matching process part. The flowchart of a contract matching process. (A) is an example of the data structure of a sensing data provision contract database, (b) is an example of the data structure of a sensing data utilization contract database. The figure for demonstrating the function and operation | movement of a sensing data delivery control part. The flowchart of sensing data delivery control. The figure for demonstrating the function and operation | movement of a sensing data processing control part. The flowchart of sensing data processing control. The figure which shows an example of virtual sensor management data. The figure for demonstrating the function and operation | movement of a price adjustment process part. The figure for demonstrating the function and operation | movement of the sensing data acquisition process part from a real sensor.

  The present invention relates to a technology (sensor network) that enables collection, management, and seamless use of sensing data by installing devices having a sensor function and a wireless communication function in various places and networking them.

  In this specification, as a configuration for realizing a sensor network, a large number of “wireless communication nodes” installed at different points, and a “mediation server” that collects and manages sensing data obtained at each wireless communication node, A system composed of an “application server” that uses sensing data provided from an intermediary server will be described. In this system configuration, the person (provider) who provides the sensing data obtained by installing a wireless communication node is different from the person (user) who operates the application server and uses the sensing data. It is assumed that an intermediary server operated by a third party (intermediary) mediates transactions and trading of sensing data between the provider and the user. If a distribution market for sensing data itself is formed by realizing such a mechanism, there will be merits for both the provider side where the wireless communication node is installed and the user side who uses the data. It is expected that new participation and installation of wireless communication nodes will progress at an accelerating rate, and that sensor networks will be spread and expanded.

  Some wireless communication nodes have a configuration in which the wireless communication node itself includes a sensor, and some have a configuration in which sensing data is acquired from a separately provided sensor. In the following description, the wireless communication node is also simply referred to as “node” or “sensor” (in the case of a wireless communication node having a sensor). There are various types of sensors. In the sensor network according to the present invention, any type of sensor (and its sensing data) can be used as long as the sensing result can be extracted in the form of digital data. Can be used. Examples of sensors include image sensors, temperature sensors, humidity sensors, illuminance sensors, force sensors, sound sensors, RFID sensors, infrared sensors, attitude sensors, rainfall sensors, radioactivity sensors, and gas sensors. Not limited.

  In the embodiment described below, nodes equipped with various sensors are installed at various points, and in normal times, the status of the surrounding environment is collected from each node, while each node uses a pedometer (activity meter). The system will be described as an information infrastructure and information station that can be used as a game mark point, and in the event of a disaster, collect each node's damage status and safety information and provide various information. However, these utilization forms are only one application example of the present invention, and are not intended to limit the scope of the present invention to these configurations.

<Overall system configuration (normal)>
FIG. 1 schematically shows the overall configuration and normal operation of a sensor network system according to an embodiment of the present invention.

As shown in the figure, mark point node installation facilities A, B, C, I, N,... Each have a radio communication node called a mark point node 1 installed therein. The mark point node 1 of each facility is connected to the Internet, which is a public communication network, via a network device such as a wireless LAN router 100 and a modem (optical modem or ADSL modem) 101. In addition, an application server 4 as a game execution device that provides a game and an intermediary server 3 as an intermediary device that mediates sensing data are also connected to the Internet.

(Composition of mark point node)
The mark point node 1 has a built-in power source including a photovoltaic power generation panel 12 and a battery 13. The solar power generation panel 12 is a device that generates power by receiving sunlight, which is natural energy, and the battery 13 is a battery that stores the power generated by the solar power generation panel 12. This power source is used to supply power to the power supply target device in the mark point node 1. In addition to the photovoltaic power generation panel 12 and the battery 13, a power source for using a commercial power source (AC power source) can be provided. In that case, it is good to switch so that a commercial power supply may be used during normal times and the photovoltaic power generation panel 12 and the battery 13 may be used during a disaster (power failure). Alternatively, when an emergency power source such as a solar power generation system or a wind power generation system is provided in the mark point node installation facility, power may be supplied from the external emergency power source in the event of a disaster.

  The mark point node 1 has an environment sensor 14 and an RFID reader / writer 17. The environmental sensor 14 is a sensing means for sensing the state of the surrounding environment. For example, one or more sensors such as an image sensor, a temperature sensor, and a humidity sensor are provided according to the purpose. Sensing data is periodically fetched from the environmental sensor 14. The RFID reader / writer 17 is means for reading data from the mobile terminal 2 held by the user by non-contact wireless communication or transmitting data to the mobile terminal 2.

  The mark point node 1 also includes a display unit 15 and a speaker 16 for an MMI (man machine interface) with a person using the node 1 including the game participants. Although not shown, an input unit such as a keyboard or a touch panel may be provided.

  These devices are controlled by a control PC (personal computer) 10. The control PC 10 stores the installation position of the mark point node 1 as, for example, data (latitude, longitude), and incorporates a clock for measuring an accurate date and time. The mark point node 1 may have a built-in GPS sensor so that the installation position of the node 1 is obtained from the output of the GPS sensor, or when the mediation server 3 stores and manages the installation position of each node 1. Need not store position data on the node 1 side.

  Furthermore, the control PC 10 has a wireless LAN slave device 11 as a wireless communication means, and can perform wireless communication with the wireless LAN router 100 provided in the mark point node installation facility N. Therefore, the mark point node 1 can be installed in the mark point installation facility N without cable installation work in terms of power supply and information communication.

  The mark point installation facility N is typically a general house or a store. That is, it is assumed that general people, store managers, and the like become “providers” who install and operate the mark point node 1 and provide sensing data. Recently, most houses and stores have introduced broadband connection services such as optical communication, ADSL, and cable communication. In that case, the modem 101 uses the existing one, and if it is not present, only the wireless LAN router 100 is added, and preparation for installing the mark point node 1 is completed. If this provider is receiving a broadband connection service on a flat rate basis, even if the mark point node 1 is installed and the mark point node 1 operates constantly, the financial burden of this provider Does not increase. In addition, when installing the mark point node 1 in a house, the mark point node 1 may be attached to a fence or an outer wall, for example, toward the road. In the case of a store, it may be installed in the store to attract game participants as customers.

(Action related to the game)
Participants of the game go around the mark points while walking while holding the mobile terminal 2. The mobile terminal 2 is a pedometer or activity meter, or a mobile phone or a portable information terminal (including a smartphone and a slate type terminal) having a step count measuring function. Cumulative step count data that the participant walks is stored in the memory 20 of the mobile terminal 2. The memory 20 also stores ID information assigned to each participant (each terminal).

  When a game participant goes around the mark point and holds the mobile terminal 2 over the RFID reader / writer 17, (1) ID information and (2) the current accumulated step count data are read into the mark point node 1. The control PC 10 of the mark point node 1 reads (3) the position (latitude, longitude) and (4) of the mark point node 1 into (1) ID information and (2) accumulated step count data read from the mobile terminal 2. The information of the time is stored as a set. This data is called passing point data.

  Each mark point node 1 installed in each installation facility A, B, C, I, N,... Accumulates passing point data of the game participants who have visited there, and transmits this through the Internet at a predetermined cycle. It transmits to the mediation server 3. After performing the necessary processing, the mediation server 3 transmits these passing point data to the application server 4. The configuration and operation of the mediation server 3 will be described later.

  When the game software operating on the application server 4 aggregates the passing point data received from the plurality of mark point nodes 1, (1) ID information, (2) the position of the mark point node (passing point), (3) ID The movement route of each game participant is extracted by analyzing the total data on the basis of the time (passing time) at which the game is read. Then, the application server 4 compares the movement paths between the participants (or between the participating groups), applies the comparison result to the game rules, and generates game result data. The game results (win / loss, earned points, etc.) are notified to the game participant's PC 40, mobile phone 41, etc., and can also be confirmed at the mark point node 1 of each facility. Furthermore, in order to increase the fun of the game, the application server 4 may generate and present various kinds of information in order to show the intermediate state in the middle of the game to the game participants and game spectators. The intermediate information may be confirmed by the PC 40, the mobile phone 41, and the mark point node 1.

(Camping social game)
As a specific example of the game, a social network game will be described. The rules of the camp social game are as follows.

Rule 1: In a camp social game in which a game period consisting of a start date and an end date and a holding area where a clear boundary line can be defined is defined, a predetermined characteristic value (for example: Points can be earned according to the area, store sales, and rice production.
Rule 2: In order to acquire a base, the number of laps in a closed curve (hereinafter referred to as a closed loop) that wraps the entire base in a clockwise or counterclockwise direction within the game period is greater than any other group or individual. It is necessary to have a lot.
Rule 3: An individual can form a group in partnership with other individuals, and the number of times each person circulates the base can be added up within the formed group. In this summation, when the direction of going around the base is the same, the sum is added up, but when the direction of going around is reversed, the sum is summed up by subtraction.
Rule 4: The area of the base and the direction of rotation form a sequence of markpoint nodes in order from the oldest to the newest arrival time at the markpoint node for each target individual or individual belonging to the group. It is determined by connecting the positions of the mark points with straight lines in the order of the series.
Rule 5: In one game period, an individual registers the turning direction in either the clockwise direction or the counterclockwise direction around the base in order to acquire the base. The data of the individual whose lap direction is different from that registered is not counted.
Rule 6: Individuals participating in the camp social game pay a certain participation fee (eg annual fee) every certain period.
Rule 7: When game participants form a group, the data of the individuals forming the group must be registered a predetermined time before the end of the game period or before the start of the game period.
Rule 8: Individuals cannot join multiple groups within one game period.

  FIG. 3 schematically shows the progress of the camp social game according to the above rules. FIG. 3 is a map showing the area where the camp social game is held, and a circle mark on the map indicates a mark point (a position where the mark point node 1 is installed). It can be seen that mark points are provided at various points (houses or stores) in the host area. A red group (Gp01) and a blue group (Gp02), each consisting of three people, are participating in the game. The red group is registered counterclockwise and the blue group is registered clockwise. To do.

(1) The red group put all three people in and turned the closed loop A twice counterclockwise. The combined number of rotations is 6, and the area of the closed loop A is 3 ha.
(2) The blue group put in one person and rotated the closed loop B once in the clockwise direction. The number of rotations after the addition is 1, and the area of the closed loop B is 1 ha.
(3) The blue group put in two people and rotated the closed loop C four times clockwise. The number of rotations after the addition is 8, and the area of the closed loop C is 1.5 ha.
(4) Since the number of rotations of the blue group in (3) is larger than the number of rotations of the red group in (1), the inside of the closed loop C becomes the base of the blue group. The blue group uses closed loop C and closed loop B as positions, so the total area of the positions is 2.5 ha. On the other hand, since the position of the red group is an area obtained by removing the closed loop C from the closed loop A, it is 1.5 ha. At this point, the blue group is wider than the red group.

(Application server operation)
Next, the operation of the game software of the application server will be specifically described with reference to FIGS. FIG. 4A is an example of the data structure of the personal management information of the game participant registered in the application server 4, and FIG. 4B is the data structure of movement history data aggregated in the application server 4. It is an example. FIG. 5 is a flowchart of the process of detecting the inclusion relationship between the closed loops, and FIG. 6 is a diagram illustrating the position state calculated based on the inclusion relationship between the closed loops. FIG. 7 is a flowchart of a process for calculating the earned points for each participant or each participating group. FIGS. 8A and 8B are examples of a presentation screen in an intermediate state of the camp social game.

Individuals or groups who wish to participate in the game can apply for participation by accessing the website of the application server 4 through the Internet. The application server 4 manages information on each game participant as shown in FIGS. 4 (a) and 4 (b). In (a), as personal management information, a personal ID (P00201), name (walking Taro), e-mail address (a1@c.jp) uniquely assigned to a participant, and the intermediate state and result of the game are confirmed. Password required to log in to the website, group ID (Gp01), closed loop number list to be acquired (Empty in the initial state, closed loop number is described when the position is acquired), winning A person's point (0 in the initial state, points are given when the base is acquired), and the circulation direction (right or left) is shown. Further, (b) summarizes the history of this participant over the mark points.

  When the application server 4 receives the passing point data from each mark point node 1 via the mediation server 3, the application server 4 tabulates them according to the IDs of the participants and collects them as movement history data in FIG. 4B. The movement history data includes the date and time when the mark point is passed, the mark point ID, the mark point position (latitude and longitude), and the closed loop number. The closed loop number is information that is input when it is determined that a closed loop is formed as a result of analyzing the movement history of the participant (see S207 in FIG. 7).

  When the period of the camp social game ends, the movement history data of all participants is determined. If it does so, the application server 4 will calculate the position (closed loop) acquired for each individual and group according to the procedure of the flowchart in FIG. Hereinafter, the processing of FIG. 7 will be described in order.

  The application server 4 sequentially selects a personal ID to be processed (S200), and reads the movement history data (FIG. 4B) of the personal ID from the personal management information (S202). Next, the application server 4 reads the data from the movement history data in the order of date and time, and detects the closed loop and its rotation direction according to the rules 4 and 5 described above (S203). Next, the application server 4 checks whether the detected closed loop is a closed loop in which no one has circulated (that is, whether the closed loop number is an unassigned closed loop) (S204). If YES, the application server 4 issues a new closed loop number (S205). If NO, the closed loop number assigned to the same closed loop is used (S206). Then, the application server 4 enters the closed loop number determined in S205 or S206 in the data of each row constituting the closed loop detected in S203 (S207). The processing of S203 to S207 is repeated until there is no data in which the closed loop number is not entered in the movement history data (S208). When the closed loop number is assigned to all the data (S208; NO), the application server 4 for the closed loop that the individual circulates, for each combination of the personal ID and the closed loop number of the individual, the number and rotation of the individual closed loop. The direction is recorded in the table shown in FIG. 6 (S209).

  The processing of S202 to S209 described above is repeated for each personal ID (S200, S201), and when the processing of all the game participants is completed, the processing proceeds to S210. In S210, the application server 4 evaluates the inclusion relationship between the closed loops, and creates a list of other closed loops included in each closed loop.

  With reference to the flowchart of FIG. 5, the algorithm for determining the inclusion relationship in S210 will be described. FIG. 5 shows a process for determining whether or not the first closed loop includes the second closed loop, and this determination process is performed for all combinations of closed loops.

First, the application server 4 has a coordinate list of all vertices constituting the first closed loop {(x11, y11); (x12, y12); ...; (x1N, y1N)}
Is created (S100). Here, x is latitude, y is longitude, the first character “1” of the subscript indicates the first closed loop, and the second character “1” to “N” indicates the index of the vertex. Yes. N is the number of vertices constituting the first closed loop. The first point, the second point,... In this coordinate list are connected in order, and the last N point is connected to the first point to form a closed loop.

Next, the application server 4 makes a coordinate list of all the vertices constituting the second closed loop {(x21, y21); (x22, y22); ...; (x2M, y2M)}
Is created (S101). Here, x is latitude, y is longitude, the first character “2” of the subscript indicates the second closed loop, and the second character “1” to “M” indicates the vertex index. Yes. M is the number of vertices constituting the second closed loop. The first point, the second point,... In this coordinate list are connected in order, and the last M point is connected to the first point to form a closed loop.

  Next, the application server 4 extracts the maximum value xmax1 of the x coordinate and the maximum value ymax1 of the y coordinate from the coordinate list of the first closed loop (S102). Then, values xE and yE obtained by doubling the values xmax1 and ymax1 are calculated, and a point E (xE, yE) having these as coordinate values is defined. The point E obtained in this way is a point guaranteed to be outside the first closed loop.

  Next, the application server 4 initializes the flag F with 0 and initializes the vertex pointer Q with 1 (S104, S105). The flag F is a flag in which F = 0 when the second closed loop is included in the first closed loop and F = 1 when the second closed loop is not included. The vertex pointer Q is a pointer used for selecting the second closed-loop vertices one by one.

  Then, the application server 4 calculates the number W of intersections of the line segment having the end point of the point E (xE, yE) and the Qth vertex (x2Q, y2Q) of the second closed loop, and the first closed loop, It is checked whether W is an odd number (S107, S108). At this time, even when the point (x2Q, y2Q) is on the first closed loop, it is determined as an intersection.

  This process is performed in order for all the vertices Q (= 1 to M) constituting the second closed loop (S109, S106), and if any single vertex where W is not an odd number is found (S108; NO), the flag F is set to 1 to exit the loop (S110). When W is an odd number at all vertices, the flag F remains at the initial value 0. Finally, the application server 4 sets the conclusion of the inclusion relationship between the first closed loop and the second closed loop based on the flag F (S111), and ends the process.

  When the above determination processing is executed for all combinations of closed loops, the result is written in the table shown in FIG. The first line of FIG. 6 shows that the person with personal ID “P00201” circulated clockwise “27” times in the closed loop “B”, and the closed loop “B” does not include other closed loops ( NONE), it is recorded that the person with the personal ID “P00201” belongs to the group “Gp02”. The third line in FIG. 6 shows that the closed loop “A” includes the closed loop “A” including the closed loop “C” that the person with the personal ID “P00115” circulated counterclockwise “6” times. And that the person with the personal ID “P00115” belongs to the group “Gp01”.

  After the table of FIG. 6 is completed, the application server 4 detects the ID of the individual or group acquired for each position according to the rules 2 and 3 (S211). And the application server 4 totals the characteristic value for every characteristic item of the acquired position for every individual or group, and converts it into acquisition points (S212). The acquired positions and points are recorded in the personal management information shown in FIG.

The processing of S211 and S212 will be described in detail using the example of FIG. The group Gp01 has two members, a member having an ID of P00115 and a member having an ID of P00078. P00115 rotated closed loop A 6 times to the left, and P00078 rotated closed loop A 8 times to the left. Therefore, the group Gp01 has rotated the closed loop A 14 times to the left.

  The closed loop A includes a closed loop C. Closed loop C was rotated 10 turns to the right by a member with ID P00201. Further, in the closed loop C, there are no other closed loops included therein. The closed loop A and the closed loop C are in an inclusive relationship, the rotation direction is opposite, and different groups circulate. Based on rule 2, the group Gp01 acquires the position of the closed loop C. This is because the number of rotations of Gp01 is 14, the number of rotations of Gp02 is 10, and the number of rotations of Gp01 is larger than that of GP02, and the rotation directions are opposite to each other. Gp01 is now able to use all areas in Loop A, including Closed Loop C, as their position.

  The characteristic value for each characteristic item of the area in the closed loop A is added to the characteristic value for each characteristic item of the position acquired by Gp01. Here, as the characteristic items, for example, the previous year sales of all the stores in the area, the rice production in the previous year, and the area of the area can be considered. In this way, the characteristic values are summed for each characteristic item of the position acquired by Gp01. The characteristic values thus totaled are used for calculating the number of points by applying a point conversion rate corresponding to each characteristic item. The number of points is totaled for each characteristic item of all positions acquired by Gp01, and the total number of points for each characteristic item thus collected is added to calculate the total number of points acquired by Gp01.

  As described above, the application server 4 according to the present embodiment generates various types of information for indicating to the game participants and game spectators the intermediate state in the middle of the game period in order to increase the fun of this team social game. It can be confirmed by the PC 40, the mobile phone 41, and each mark point node 1 (display unit 15, speaker 16). FIG. 8A shows a display example of an intermediate state that can be confirmed at a certain mark point node 1. In this display screen, the circulation status of each participant in each of the closed loops A and C including the mark point as a vertex is displayed. FIG. 8B shows another display example of the intermediate state that can be confirmed at the mark point node 1. This screen is an example in which the advice for the individual (P00115) is presented based on the personal ID read by the mark point node 1 with the RFID reader / writer. By looking at the screens of FIG. 8 (a) and FIG. 8 (b), the game participants can make a strategy such as who is currently taking the lead and what closed loops are required to reverse. it can. Thus, the mark point node 1 also serves as a gateway for game participants to exchange information in real time between the game played in the virtual world and the real world.

(Automatic inspection in case of disaster)
The mark point node 1 of the present embodiment performs regular inspections and inspections according to a schedule of each function necessary for operation at the time of a disaster even in normal times.

That is, it is confirmed that each part of the mark point node 1 operates with the power supplied from the battery 13 and can execute the following items.
(1) Communication with the mobile terminal 2 by the RFID reader / writer 17 (2) Reading of sensing data from the environmental sensor 14 (3) Display of a message on the display unit 15 (4) Audio output from the speaker 16 (5) ) Sending and receiving information via ad hoc wireless communication with nearby markpoint nodes

However, the inspection items (3) and (4) can be executed when there is a person who can confirm the contents in the vicinity. A person who confirms the contents operates a keyboard or a button not shown in FIG. 1 and inputs data indicating the suitability of the confirmed contents. For other inspection items (1), (2), and (5), whether or not communication is possible and whether or not reading is possible are automatically confirmed. The evaluation of the operation result is notified to the mediation server 3 or a management server (not shown).

  As described above, even in the normal mode, the operation test in the disaster mode is automatically performed according to the predetermined schedule, so that the state in which the functions necessary in the disaster can be appropriately executed can be maintained. Thereby, the reliability of the mark point node 1 and the entire sensor network can be improved.

<System overall configuration (disaster)>
FIG. 2 schematically shows the entire configuration of the sensor network system according to the embodiment of the present invention and the operation at the time of disaster.

  In the event of a disaster, it is assumed that commercial power and the Internet, landline and mobile phone networks will go down. Even in that case, it is necessary to realize the functions of sensing the state of the disaster site, confirming the safety of people at the disaster site, and transmitting messages to the people at the disaster site. Therefore, at the time of a disaster, the mark point node 1 functions as an information infrastructure or an information station, and realizes various services required at the time of the disaster described above.

  Since the mark point node 1 incorporates the photovoltaic power generation panel 12 and the battery 13, the operation can be continued even if the commercial power source is down. During normal times, the wireless LAN slave unit 11 was connected to the Internet via the wireless LAN router 100 and modem 101 already installed in the mark point node installation facility (for example, a general house). It operates in a communication mode and communicates with wireless LAN slave units in other mark point nodes in an adjacent mark point node installation facility (for example, a general house) to form a wireless communication network.

  As an event for the wireless LAN slave device 11 to change the mode to the ad hoc communication mode, there is a case where the wireless LAN router 100 which is the original communication partner does not respond for a predetermined time or more. In addition, the wireless LAN slave unit of each mark point node is always in a temporary ad hoc communication mode at the same time for the first minute of every hour, confirming whether there is a command for disaster response processing, and commands for disaster response processing There is also a method of making an event for entering the ad hoc communication mode when it has been received.

  The ad hoc communication mode is one of the operation modes of the IEEE 802.11 wireless LAN, and wireless LAN adapters installed in each terminal directly communicate with each other. In order for two wireless LAN adapters to communicate in the ad hoc communication mode, ESS-IDs (Extended Service Set Identifiers) set in the adapters should be matched.

  When operating in the temporary ad hoc communication mode, the mark point parent node in the installation facility I in FIG. 2 communicates with the disaster response server 5 via the communication satellite 7 and the disaster communication station 6. Then, the mark point parent node reports that the temporary ad hoc communication mode is operating normally, and checks whether a disaster response processing command is received from the disaster response server 5. When a command for disaster response processing is received, a command to switch to the disaster mode is sent from the mark point parent node to all the mark point nodes through the ad hoc wireless communication network. Thereby, each mark point node maintains the ad hoc communication mode and starts operation in the disaster mode. On the other hand, if the command for disaster response processing does not come for a certain period of time, the temporary ad hoc communication mode is terminated, and the normal operation shown in FIG.

  In the event of a disaster, each mark point node senses the state of the surrounding environment with the environment sensor 14, and transmits sensing data to the mark point parent node that controls the area through the ad hoc wireless communication network. As a result, sensing data indicating the state of the local site is collected at the mark point parent node. Data collected at the mark point parent node in each region is collected in the disaster response server 5 through a communication satellite 7 or the like.

  As one of the sensing data, the number of steps or activity data read from the mobile terminal 2 can be used. That is, even in the disaster mode, the RFID reader / writer 17 collects personal ID and step count or activity data from the mobile terminal 2. Since this personal data is information indicating the location and activity state of the individual, it can be used for safety confirmation. When reading data from the mobile terminal 2, an image of the person is acquired by an image sensor installed as one of the environmental sensors 14, and this image is used as a mark point parent node together with the personal ID and the mark point ID. It may be sent to the disaster response server 5 for confirmation of safety.

  In addition, commands and information from the disaster response server 5 can be sent via the route of communication satellite 7 ⇒ mark point parent node ⇒ mark point node 1 to convey information to people around the mark point node installation facility. it can. For the presentation of information, the display unit 15 and the speaker 16 equipped in the mark point node 1 are used.

(Operation of disaster response server)
The operation of the disaster response server 5 will be described in more detail with reference to FIG.

  The disaster response server 5 (hereinafter referred to as S server 5) is connected to each mark point parent node and each mark point node via the disaster communication station 6; And a mark point node management function 51 for managing information collected from each mark point node. The mark point node management function 51 includes a first database 52 called “a database of personal information for each mark point node” collected from each mark point node 1 and a “database for personal information for each mark point node”. It is recorded in a second database 53 called “sensing data database”.

  These two databases 52 and 53 manage the following information as a summary. That is, what enters the first database 52 is a list of personal information including ID and activity data of the persons existing around each mark point node 1. The ID and activity amount are acquired from the mobile terminal 2 held by each person. In other words, this mobile terminal 2 that was used for the purpose of participating in social games and promoting health during normal times is diverted to the purpose of confirming the safety of transmitting personal ID, position, and amount of activity in the event of a disaster. is there.

  The information gathered in the first database 52 indicates the number of people around each mark point node 1 and the safety status of each person. Since each person can be identified from the ID, It is also useful for creating disaster situation maps because it is possible to grasp the contact information of related parties.

  The second database 53 is a database for storing data collected through the disaster communication station 6 indicating the environmental state of each mark point node 1. For this, the data collected by the environment sensor 14 (eg, temperature sensor, gas sensor, earthquake sensor, image sensor) of each mark point node 1 is the mark point node 1 ID or the mark point node position information and time data. Correspondingly saved.

  The S server 5 processes the first database 52 to create a “personal ID / network ID correspondence table” for personal communication. That is, a table (hereinafter referred to as a correspondence table 54) is created in which each individual ID is associated with the IP address of the mark point node to which the individual belongs. This correspondence table 54 constitutes a part of a routing table for communicating with other nodes and the like via the mark point node 1. That is, the communication with the personal ID as the destination is communication using the ID of the mark point node 1 to which the person with the personal ID belongs as a relay node. Various messages addressed to the personal ID are generated and transmitted by the “personal safety confirmation, location tracking, message transmission function” 55.

  When the mark point node 1 receives a message addressed to the personal ID, the message is temporarily stored in the storage unit of the mark point node 1. When the mark point node 1 reads the same personal ID as the destination ID attached to the stored message with the RFID reader / writer 17, information transmission from the mark point node 1 to the person is executed. For example, after the notification “There is a notice to Mr. XX” is output from the display unit 15 or the speaker 16, the stored message can be output from the display unit 15 or the speaker 16. Alternatively, the stored message may be sent from the RFID reader / writer 17 to the mobile terminal 2 so that the message can be reproduced on the mobile terminal 2.

  Furthermore, each individual can also send and return information using the mobile terminal 2 or the mark point node 1. For example, when a simple message designating a destination on the mobile terminal 2 is created and held over the RFID reader / writer 17 of the mark point node 1, the personal ID, the number of steps or the amount of activity data, and the destination are attached. A simple message is read. When transmitting information using the mark point node 1, the mobile terminal 2 is held over the mark point node 1 to read the personal ID, and then a message or destination is input using MMI means such as a keyboard. Just do it.

  Communication packets of transmission messages from the mark point node 1 are aggregated to the mark point parent node through an ad hoc wireless communication network formed between adjacent mark point nodes. Then, it is transmitted from the mark point parent node via the communication satellite 7 to the disaster communication station 6 and from there to the S server 5.

  Further, the “personal safety confirmation, location tracking, message transmission function” 55 is based on the information collected in the first database 52 and the information input by the MMI function 56, and the safety confirmation and location tracking of each person. You can also generate and send various messages.

  Furthermore, the disaster situation map creation function 57 creates a disaster situation map using the first database 52, the second database 53, and the map information DB 58. More specifically, the disaster situation map creation function 57 creates the position of each mark point node 1, the status of the surrounding environment of each mark point node 1, the status of each mark point node 1 on the map data read from the map information DB 58. Create data that describes the number of people around you and the situation of each person. The disaster situation map created in this way is delivered to each mark point node by the disaster situation map delivery function 59 via the anti-mark point node communication function 50.

Further, the user can set the evacuation destination and the evacuation route while referring to the disaster situation map using the “evacuation destination and evacuation route setting function” 60 and the MMI function 56. The set evacuation destination and evacuation route can be distributed to each mark point node 1 via the anti-mark point node communication function 50, or can be broadcast using the radio broadcasting facility 61. This radio broadcast can be received by the radio receiver 18 of the mark point node 1 and reproduced from the speaker 16, or can be heard by each individual if the mobile terminal 2 has a built-in radio function.

<Configuration of mediation server>
Next, the configuration of the mediation server 3 will be described in detail with reference to FIG. FIG. 10 is a functional block diagram showing an outline of a functional configuration of the mediation server 3.

  As described above, the mediation server 3 is a person (provider) who provides the sensing data obtained by installing the mark point node 1 and a person (user) who operates the application server 4 and uses the sensing data. It is a server responsible for the function to mediate the trading and trading of sensing data. While the provider of sensing data wants to increase the usage rate of the data that it provides, it can be used on its own by unintended persons or used unintentionally. I want to avoid being harmed. On the other hand, a user of sensing data desires to be able to use sensing data having specifications that match his / her desires at as low a cost as possible. Therefore, in order to realize the distribution of sensing data, a framework for clearing the contract conditions and legal relations related to the sensing data transaction between the provider and the user is necessary. In the system according to the present embodiment, the mediation server 3 automatically performs matching between the provider and the user, thereby realizing sound and safe use of the sensing data.

  As shown in FIG. 10, the intermediary server 3 includes a contract matching processing unit 30, a sensing data provision contract database 31, a sensing data use contract database 32, a sensing data distribution control unit 33, a sensing data processing control unit 34, and an actual sensor. It has a sensing data acquisition processing unit 35, a sensing data database 36, a virtual sensor management data database 37, a distribution log database 38, and a price adjustment processing unit 39. These functions are realized by the CPU of the mediation server 3 executing the mediation program stored in the auxiliary storage device of the mediation server 3. Hereinafter, each function will be described in order.

(Contract matching processing)
FIG. 11 shows a functional configuration of the contract matching processing unit 30, and FIG. 12 shows a flowchart of the contract matching processing in the contract matching processing unit 30.

  The contract matching processing unit 30 periodically executes the contract matching process of FIG. The execution period of the contract matching process may be set once every several seconds to several minutes, or may be set once every several tens of minutes to several hours. What is necessary is just to set suitably according to the use of a sensor network, a contractor, etc.

  First, the contract matching processing unit 30 initializes the usage contract read counter k and the k-th matching list (S300). Next, the usage contract reading processing unit 302 reads the k-th contract data from the sensing data usage contract database 32 (S301), and by checking the usage conditions of the contract data, the user can obtain the sensing data at the present time. It is determined whether usage is required (S303). For example, if the user desires to acquire traffic information at 10:00 am on Saturdays every week, a NO determination is made in S303 at times other than that time on Saturdays.

FIG. 13B is an example of contract data for use conditions stored in the sensing data use contract database 32. The contract data consists of items such as user number, IP address, contract number, sensing type, sensing area position, sensing cycle, sensing data reliability, sensing data consideration, and the range of apps that can use sensing data. ing. The IP address is the network address of the user's application server. This user “USER002” is measured with a high reliability of 80% or more in a period of 200 seconds or less from a node (sensor) installed in the vicinity of Kyofuku Arashiyama Station.
I want the sensing data of D. In addition, as the consideration, it is stipulated that up to 150 yen per sensing data is possible, and that the range of use of sensing data is limited to watching over people and camp games.

  If a usage contract that requires the use of sensing data is found in S303, the provision contract reading processing unit 301 initializes the provision contract reading counter u (S305). The contract data is read out (S306). FIG. 13A is an example of contract data of provision conditions stored in the sensing data provision contract database 31. The items of the contract data of the provision conditions are the same as the items of the contract data of the use conditions described above, so the explanation is omitted.

  Next, the contract item match determination processing unit 303 compares each item of the kth use contract with each item of the uth provision contract, and determines whether the values (conditions) of all the items match. (S308). Comparing the examples of FIG. 13A and FIG. 13B, it can be seen that the conditions of both match. If all items match, the matching list creation processing unit 304 adds the contract number u to the k-th matching list (S309). The processes of S306 to S309 are repeated for all provision contracts stored in the sensing data provision contract database 31 (S310, S307).

  When the match / non-match with the kth usage contract is confirmed for all the provision contracts, the provision contract selection unit 305 confirms whether one or more contract numbers are described in the kth matching list. (S311). If there is no contract number, it means that there is no provision contract that matches the kth use contract, so that the sensing data is not provided to the user who presented the kth use contract. On the other hand, when one or more contract numbers are described in the matching list, the provision contract selection unit 305 selects the provision contract with the smallest consideration among the provision contracts (S305). In this way, by selecting a provision contract with the minimum consideration rule, it is possible to respect the interests of the user and to make the compensation of the sensing data appropriate.

  After the above processing is executed for all usage contracts, the contract matching processing is terminated (S304, S302). Thereafter, the acquisition source address detection unit 306 reads the acquisition source address of the sensing data (IP address in the example of FIG. 13A) from the minimum consideration provision contract data, and delivers this to the sensing data distribution control unit 33. Similarly, the sensor number detection unit 307 reads out the sensor number from the provision contract data with the minimum consideration, and delivers it to the sensing data distribution control unit 33. When the acquisition source of the sensing data is not a real sensor but a virtual sensor described later, the sensor data is specified only by the sensor number. Therefore, the acquisition source address is a temporary address (eg, “0.0.0.0”). .0 ") is set. Whether the acquisition source is a real sensor or a virtual sensor can be determined from the range of sensor numbers, and it can also be determined whether a valid IP address is described in the provision contract data. Further, the provision destination address detection unit 308 reads the user's IP address from the usage contract data, and delivers it to the sensing data distribution control unit 33 as the provision destination address.

(Sensing data distribution control)
FIG. 14 shows a functional configuration of the sensing data delivery control unit 33, and FIG. 15 shows a flowchart of sensing data delivery control in the sensing data delivery control unit 33.

The sensing data distribution control unit 33 waits to receive data (specifically, an acquisition source address, a sensor number, and a provision destination address) related to a sensing data transaction that matches the contract conditions from the contract matching processing unit 30 (S400). . When the data is received, the acquisition source address is stored in the acquisition source address storage unit 330, the sensor number is stored in the sensor number storage unit 331, and the provision destination address is stored in the provision destination address storage unit 332.

  The sensing data receiving unit 333 delivers the acquisition source address and the sensor number to the sensing data processing control unit 34, requests the latest sensing data from the corresponding sensor (S401), and the sensing requested from the sensing data processing control unit 34 Waiting to receive data (S402).

  Thereafter, the sensing data device unit 334 transmits the received sensing data to the provision destination address (S403). Then, the distribution recording unit 335 records the type of sensing data, the sensor number, the providing destination address, the acquisition source address, and the transmission date and time in the distribution log database 38 (S404). As a result, a log indicating what kind of sensing data obtained from which sensor was provided to the user at which destination address is provided.

(Sensing data processing control)
FIG. 16 shows a functional configuration of the sensing data processing control unit 34, and FIG. 17 shows a flowchart of sensing data processing control in the sensing data processing control unit 34.

  The sensing data processing control unit 34 waits to receive a request for sensing data from the sensing data distribution control unit 33 (S500). When receiving the request, the sensor type determination unit 340 determines whether the sensor is a real sensor or a virtual sensor based on the sensor number and the acquisition source address (S501). An actual sensor is a sensor installed as a mark point node. In FIG. 10, n actual sensors are provided from R1 to Rn. On the other hand, a virtual sensor is a module that processes and outputs sensing data obtained from one or more real sensors, and is basically realized by a computer program. Although it is called a virtual sensor in order to distinguish it from a real sensor installed in the real world, the handling of sensing data does not change when it is a real sensor.

  When the requested sensing data is that of an actual sensor (S501; NO), the sensing data reading unit 341 obtains the latest sensing data of the sensor specified by the sensor number or the acquisition source address from the sensing data DB 36. The data is read and handed over to the sensing data distribution control unit 33 (S502).

  On the other hand, if the requested sensing data is for a virtual sensor (S501; YES), the virtual sensor management data reading unit 342 reads the virtual sensor management corresponding to the sensor number from the virtual sensor management data DB 37. Read data. Virtual sensor management data describes a list of lower sensors used to generate virtual sensor sensing data and a definition of how to process the sensing data of lower sensors (processing method). It is a thing. 18A and 18B show examples of virtual sensor management data. In the example of FIG. 8A, it is defined that the virtual sensor VS001 generates sensing data with reliability data using the sensing data of the actual sensor R002 and the actual sensor R004. In the example of FIG. 8B, it is defined that the virtual sensor VS004 performs sensing with condition determination using the sensing data of the virtual sensor VS001 and the virtual sensor VS003. The virtual sensor management data reading unit 343 delivers the lower sensor number obtained in this way to the sensing data reading unit 341. When the lower sensor is also a virtual sensor as shown in FIG. 8B, the process may be repeated recursively until the sensor number of the actual sensor is obtained.

The sensing data reading unit 341 sequentially reads the latest sensing data of each of the designated lower sensors from the sensing data DB 36, and the sensing data buffer 3
43 (S504). When the sensing data of all the lower sensors is read, the sensing data processing unit 344 applies the processing defined in the virtual sensor management data to the sensing data of the lower sensors, thereby processing the processed sensing data. Is obtained (S505). The processed sensing data is delivered to the sensing data distribution control unit 33 as sensing data of the virtual sensor.

(Example of virtual sensor)
Hereinafter, some specific examples of the virtual sensor will be described.

(1) Difference processing The difference processing is a processing method for obtaining a change rate by taking a difference between observation values having a time difference measured from the same sensing object. The measured value m1 is measured at the time t1 by the sensor s1 installed at the position p1, and then the measured value m2 is measured at the time t2 by the sensor s2 installed at the position p2 from the sensing object having the same ID. Assume.

As sensing data obtained by differential processing, for example,
Velocity vector = (p2-p1) / (t2-t1)
Time change rate of measured value = (m2-m1) / (t2-t1)
Spatial change rate of measured value = (m2-m1) / (p2-p1)
And so on.

(2) Average detection process The average detection process is a processing method for calculating an average of observation values measured at substantially the same position and time from the same sensing object. It is used to improve the reliability of sensing data by improving the signal-to-noise ratio. It is assumed that the measured value m1 is measured at the time t1 by the sensor s1 installed at the position p1, and the measured value m2 is measured at the time t2 by the sensor s2 installed at the position p2 from the sensing object having the same ID. . However, it is assumed that | p2−p1 | <δp and | t2−t1 | <δt are satisfied, and the position and time of both can be regarded as substantially the same. In this case, as sensing data obtained by the average detection process, for example,
Average of measured values = (m1 + m2) / 2
And so on. It should be noted that other averaging processes such as weighted averaging may be applied instead of simple averaging.

(3) Generating sensing data with reliability data This process calculates the reliability of observation values based on multiple observation values measured from the same sensing object, and outputs the reliability data together with the observation values. That's it. Here, the reliability data is calculated by the following method under the assumption that the sensing data having a relationship that matches the relationship model of the sensing target region is highly reliable.

It is assumed that measured values A1 (r, t) and A2 (r, t) are obtained by the two sensors s1 and s2, respectively. The cross-correlation function of outputs A1 and A2 from each sensor is as follows.
S (α, β) = ∬A1 (r, t) · A2 (r−α, t−β) drdt
Then, S * which is the maximum value of S and (α *, β *) which is a set of α and β at that time are obtained. If (α *, β *) matches the relationship model (αM, βM) of the sensing target areas of the sensors s1 and s2 within an allowable error, and S * is equal to or greater than the threshold value THM, A1 A2 is output as highly reliable sensing data.

(4) Multiple sensing data with conditional judgment This process realizes a sensor that can output advanced judgment results by making conditional judgments using sensing data related to different attributes measured from the same sensing object. That's it.

It is assumed that measured values A (r, t) and B (r, t) are obtained by the two sensors s1 and s2, respectively. At this time, for example, the value S is obtained by the following condition determination process, and the value S is output as the sensing data of the virtual sensor.
IF Condition 1 (A (r, t)) & Condition 2 (B (r, t))
THEN S = True
ELSE S = False
In this condition determination process, True is output as sensing data when measured values A and B both satisfy a predetermined condition, and False is output otherwise.

(Cost adjustment processing)
FIG. 19 shows a functional configuration of the price settlement processing unit 39. The price settlement processing unit 39 is a function that performs a price billing process for a sensing data user and a price payment process for a sensing data provider based on a sensing data transaction log recorded in the distribution log database 38.

  Specifically, the distribution log creation processing unit 390 for each provider reads an unsettled distribution log from the distribution log database 38, sorts the log according to the provision, and generates a distribution log for each provider. The provision contract reading unit 391 reads provision contract data of each provider from the sensing data provision contract database 31. Then, the value calculation processing unit 392 for each provider obtains the number of sensing data distributed by the provider from the distribution log for each provider, and multiplies that value by the value of the sensing data specified in the provision contract. Therefore, the total amount of consideration is calculated. Consideration data for each provider is transmitted to a settlement organization (not shown), and compensation is paid to each provider.

  On the other hand, with respect to the charge to the user, first, the reception log creation processing unit 393 for each user reads undistributed distribution logs from the distribution log database 38, sorts the logs for each user, and receives them for each user. Generate logs. The usage contract reading unit 394 reads the usage contract data of each user from the sensing data usage contract database 32. The charge amount calculation processing unit 395 for each user calculates the total charge amount for each user based on the reception log for each user, the consideration data for each provider, and the use contract. The billing amount data for each user is transmitted to a settlement organization (not shown), and each user is charged for the price.

(Sensing data acquisition processing unit from actual sensors)
FIG. 20 shows a functional configuration of the sensing data acquisition processing unit 35 from the actual sensor. The sensing data acquisition processing unit 35 from the actual sensors has a function of periodically collecting sensing data from the actual sensors R1 to Rn illustrated in FIG. In addition, when the sensing data processing control unit 34 designates a sensor number or an acquisition source address and requests acquisition of the latest sensing data, data acquisition is performed from the corresponding actual sensor.

  A large number of real sensors (nodes) are registered in the mediation server 3, but the data acquisition method and data specifications (data structure) may differ depending on the type or model of the sensor. Therefore, in the sensor management information database 350, information unique to each sensor is registered in addition to the data acquisition method and data specifications. In addition, when newly registering a sensor, the administrator inputs such information using the function of the sensor management information setting unit 351.

  For example, when there is a data acquisition request specifying a sensor number or an acquisition source address, the sensor management information reading unit 352 reads information on the sensor from the sensor management information database 350. Then, the sensor management information reading unit 352 sends the acquisition source address of the sensor to the address setting unit 353, the protocol information used for communication with the sensor to the protocol control unit 354, and the specification of data acquired from the sensor. Are transferred to the data conversion unit 356, respectively. The sensor access execution unit 355 transmits a request for sensing data to the sensor (node) at the address specified by the address setting unit 353 under the control of the protocol control unit 354. When sensing data is sent in response to this, the data conversion unit 356 applies predetermined data conversion to the sensing data, and obtains data in a format that can be easily handled by the mediating server 3 or the user of the sensing data. The obtained sensing data is stored in the sensing data DB 36.

<Advantages of this embodiment>
The configuration of the present embodiment described above has the following advantages. In other words, since the mark point node can be operated in a plurality of modes including the normal mode and the disaster mode, it is possible to increase the use opportunity and added value of the node, and as a result, the cost-effectiveness regarding the installation and installation of the node. Can be increased. Therefore, it is expected that the installation of nodes in ordinary houses and stores will be promoted and the sensor network will be spread and expanded.

  In addition, the built-in power source that generates power using natural energy, or the provision of a function to be used at the Mark Point node, can keep the node running even in situations where commercial power is not available due to a power outage The availability and reliability of the entire node and sensor network can be improved.

  Also, in the event of a disaster, each node forms an ad hoc wireless communication network with other nodes in the vicinity to send and receive various types of information, so even in situations where the public communication network cannot be used due to a power failure or disconnection Information can be acquired from each node and distributed to each node, and can be used as an information infrastructure or information station at the time of a disaster. Further, even in the normal mode, the operation test in the disaster mode is automatically performed according to a predetermined schedule, so that a state where the necessary functions can be appropriately executed in the disaster can be maintained. This also contributes to improving the reliability of the entire node and sensor network.

  In the present embodiment, the use point and added value of the node in normal times can be further increased by utilizing the mark point node in the game. Since each node is physically installed at a different point, it is easy to create a highly competitive game or an interesting game in which game participants are actually moved and competed in the real world. In particular, in the camp social game exemplified in this embodiment, participants can be actively guided to various roads and stores in the area through a game where many people participate. We can expect effects such as town revitalization. In addition to promoting health through walking, participants can be provided with an attraction-like game experience using the real world.

  In this embodiment, since the mediation server is used to automatically mediate between the data provider and the data user, it is possible to realize the sound and safe use of the sensing data.

1: Mark point node (wireless communication node)
2: Mobile terminal 3: Mediation server (mediation device)
4: Application server (game execution device)
5: Disaster response server

Claims (11)

A wireless communication node,
A power supply means for generating power using natural energy and supplying the power to a power supply target in the own node;
Mode switching means for mode switching in a range of a plurality of modes including a normal mode and a disaster mode;
A first communication means for communicating by connecting to a public communication network in the normal mode;
In the disaster mode, the MMI means operates by the power supplied from the power supply means and inputs information from a person and presents information to the person;
In the disaster mode, it operates with the power supplied from the power supply means, forms a wireless communication network with other wireless communication nodes existing around its own node, and handles information handled by the MMI means through the wireless communication network. Wireless communication means for transmitting and receiving;
Evaluation means for causing the wireless communication means and the MMI means to perform an operation in the disaster mode and evaluating the operation result in a predetermined schedule even in the normal mode;
A wireless communication node comprising: A wireless communication node,
A power supply means for supplying power obtained from an external power source for generating power to a power supply target in the own node;
Mode switching means for mode switching in a range of a plurality of modes including a normal mode and a disaster mode;
A first communication means for communicating by connecting to a public communication network in the normal mode;
In the disaster mode, the MMI means operates by the power supplied from the power supply means and inputs information from a person and presents information to the person;
In the disaster mode, it operates with the power supplied from the power supply means, forms a wireless communication network with other wireless communication nodes existing around its own node, and handles information handled by the MMI means through the wireless communication network. Wireless communication means for transmitting and receiving;
Evaluation means for causing the wireless communication means and the MMI means to perform an operation in the disaster mode and evaluating the operation result in a predetermined schedule even in the normal mode;
A wireless communication node comprising: A wireless communication node,
A power supply means for generating power using natural energy and supplying the power to a power supply target in the own node;
Mode switching means for mode switching in a range of a plurality of modes including a normal mode and a disaster mode;
A first communication means for communicating by connecting to a public communication network in the normal mode;
In the disaster mode, sensing means that operates by the power supplied from the power supply means and senses the state of the surrounding environment of the own node;
In the disaster mode, the wireless communication network operates with the power supplied from the power supply means to form a wireless communication network with other wireless communication nodes existing around the own node, and the information obtained by the sensing means is transmitted to the wireless communication network. Wireless communication means for transmitting and receiving through,
An evaluation unit that causes the wireless communication unit and the sensing unit to perform an operation in a disaster mode and evaluates the operation result in a predetermined schedule even in a normal mode,
A wireless communication node comprising: A wireless communication node,
A power supply means for supplying power obtained from an external power source for generating power to a power supply target in the own node;
Mode switching means for mode switching in a range of a plurality of modes including a normal mode and a disaster mode;
A first communication means for communicating by connecting to a public communication network in the normal mode;
In the disaster mode, sensing means that operates by the power supplied from the power supply means and senses the state of the surrounding environment of the own node;
In the disaster mode, the wireless communication network operates with the power supplied from the power supply means to form a wireless communication network with other wireless communication nodes existing around the own node, and the information obtained by the sensing means is transmitted to the wireless communication network. Wireless communication means for transmitting and receiving through,
An evaluation unit that causes the wireless communication unit and the sensing unit to perform an operation in a disaster mode and evaluates the operation result in a predetermined schedule even in a normal mode,
A wireless communication node comprising: A wireless communication node,
A power supply means for generating power using natural energy and supplying the power to a power supply target in the own node;
Mode switching means for mode switching in a range of a plurality of modes including a normal mode and a disaster mode;
A first communication means for communicating by connecting to a public communication network in the normal mode;
In the disaster mode, the MMI means operates by the power supplied from the power supply means and inputs information from a person and presents information to the person;
In the disaster mode, sensing means that operates by the power supplied from the power supply means and senses the state of the surrounding environment of the own node;
In the disaster mode, it operates with the power supplied from the power supply means to form a wireless communication network with other wireless communication nodes existing around its own node, and obtains information handled by the MMI means and the sensing means. Wireless communication means for transmitting and receiving information transmitted through the wireless communication network;
An evaluation unit that causes the wireless communication unit, the MMI unit, and the sensing unit to perform an operation in a disaster mode and evaluates the operation result in a predetermined schedule even in a normal mode;
A wireless communication node comprising: A wireless communication node,
A power supply means for supplying power obtained from an external power source for generating power to a power supply target in the own node;
Mode switching means for mode switching in a range of a plurality of modes including a normal mode and a disaster mode;
A first communication means for communicating by connecting to a public communication network in the normal mode;
In the disaster mode, the MMI means operates by the power supplied from the power supply means and inputs information from a person and presents information to the person;
In the disaster mode, sensing means that operates by the power supplied from the power supply means and senses the state of the surrounding environment of the own node;
In the disaster mode, it operates with the power supplied from the power supply means to form a wireless communication network with other wireless communication nodes existing around its own node, and obtains information handled by the MMI means and the sensing means. Wireless communication means for transmitting and receiving information transmitted through the wireless communication network;
An evaluation unit that causes the wireless communication unit, the MMI unit, and the sensing unit to perform an operation in a disaster mode and evaluates the operation result in a predetermined schedule even in a normal mode;
A wireless communication node comprising: A wireless communication node,
A power supply means for generating power using natural energy and supplying the power to a power supply target in the own node;
Mode switching means for mode switching in a range of a plurality of modes including a normal mode and a disaster mode;
A first communication means for communicating by connecting to a public communication network in the normal mode;
In the disaster mode, the MMI means operates by the power supplied from the power supply means and inputs information from a person and presents information to the person;
ID reading means that operates with power supplied from the power supply means in the disaster mode and reads ID information from an ID storage medium possessed by a person;
In the disaster mode, it operates with the power supplied from the power supply means to form a wireless communication network with other wireless communication nodes existing around the own node, and the information handled by the MMI means and the ID reading means Wireless communication means for transmitting and receiving the read information through the wireless communication network;
An evaluation unit that causes the wireless communication unit, the MMI unit, and the ID reading unit to perform an operation in a disaster mode and evaluates the operation result in a predetermined schedule even in a normal mode;
A wireless communication node comprising: A wireless communication node,
A power supply means for supplying power obtained from an external power source for generating power to a power supply target in the own node;
Mode switching means for mode switching in a range of a plurality of modes including a normal mode and a disaster mode;
A first communication means for communicating by connecting to a public communication network in the normal mode;
In the disaster mode, the MMI means operates by the power supplied from the power supply means and inputs information from a person and presents information to the person;
ID reading means that operates with power supplied from the power supply means in the disaster mode and reads ID information from an ID storage medium possessed by a person;
In the disaster mode, it operates with the power supplied from the power supply means to form a wireless communication network with other wireless communication nodes existing around the own node, and the information handled by the MMI means and the ID reading means Wireless communication means for transmitting and receiving the read information through the wireless communication network;
An evaluation unit that causes the wireless communication unit, the MMI unit, and the ID reading unit to perform an operation in a disaster mode and evaluates the operation result in a predetermined schedule even in a normal mode;
A wireless communication node comprising: A program for controlling the wireless communication node according to any one of claims 1 to 8,
A program for causing a wireless communication node to function as at least the mode switching unit, a unit for controlling the wireless communication unit to form the wireless communication network when the disaster mode is set, and the evaluation unit. A game execution device for executing a game using a plurality of wireless communication nodes according to claim 7 or 8 arranged at different points and a plurality of mobile objects storing different IDs,
Receiving means for receiving, as passing point data, an ID read by each of the plurality of wireless communication nodes from the moving object together with information on the time when the reading was performed;
By analyzing the passing point data collected by the receiving means based on the ID of the moving object, the position of the wireless communication node that read the ID, and the time when the ID is read, the moving path of each moving object is extracted. Extraction means;
A comparison means for comparing the movement route obtained by the extraction means between a plurality of moving bodies to generate a comparison result;
Applying the comparison result generated by the comparison means to a game rule, and generating result data for the game;
A game execution device comprising: An intermediary device that mediates provision of passing point data between the wireless communication node according to claim 7 or 8 and the game execution device according to claim 9,
A provision condition database for storing data defining provision conditions on the provider side for providing information obtained by the wireless communication node;
A use condition database for storing data defining the use conditions of the user side who uses the provided information;
Whether the conditions are met by comparing the provision conditions of the provider who can provide the passing point data obtained at the wireless communication node with the usage conditions of the user who desires to use the passing point data in the game execution device. A condition comparison means for determining whether or not
An intermediary means for transmitting the passing point data obtained from the wireless communication node to the game execution device only when the condition comparison means determines that the condition is satisfied;
An intermediary device comprising:

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