KR20100060103A - System for providing ubiquitous weather information service and method thereof - Google Patents

Abstract

PURPOSE: A system and a method thereof for offering a ubiquitous weather information service so that a user of a mobile terminal be proceed the quick management are provided to efficiently offer the weather information service. CONSTITUTION: A first network group(100) is located within a service zone. The first network group collects the weather information of the service zone. A secondary network group(200) provides the collected weather information. The secondary network group collects the weather information within the service zone. The secondary network group decides the disaster based on the weather information. The disaster information is broadcasted within the service zone according to the secondary network group.

Description

System and providing ubiquitous weather information service and method

The present invention relates to a system and a method for providing a ubiquitous weather information service.

Today, with the rapid spread of the Internet and the advancement of mobile communication, the importance of ubiquitous computing that provides information anytime and anywhere by each information device is raised even if the user does not recognize it. The core technology in this ubiquitous computing era is a wireless sensor network that can acquire the environment and human behavior patterns.

The wireless sensor network can provide various information services. In particular, the weather information service provides weather information received from sensors in an environment where a wired infrastructure is constructed, such as temperature, humidity, air pressure, snowfall, rainfall, wind direction, wind speed, and the like. After collectively gathering from the server, it is possible to determine whether a disaster and notify the user of the result of the determination through a wired network or a base station.

However, such a weather information service must be notified to the user through the base station after being collected by the server, and the user must be notified through the wired network in a shaded area such as a mountainous area where it is difficult to notify the user through the base station. Building a wired infrastructure is also difficult, making it virtually impossible.

The present invention is to solve the problems of the prior art as described above, the movement of the weather information collected by collecting the weather information in a specific region through the sensor network or the disaster information determined based on the movement to move the ad-hoc network The present invention provides a system and method for providing a ubiquitous weather information service that can provide a weather information service efficiently by broadcasting to a terminal.

In addition, the present invention collects weather information in a specific area through the sensor network and broadcasts the collected weather information or disaster information determined on the basis to the mobile terminal constituting the mobile ad-hoc network, thereby quickly The present invention provides a system and method for providing a ubiquitous weather information service that enables coping.

In addition, the present invention by collecting the weather information in a specific area through the sensor network broadcasts the weather information or the disaster information determined based on the broadcast to the mobile terminal constituting the mobile ad-hoc network, damage caused by sudden disasters The present invention provides a system and method for providing a ubiquitous weather information service that can be prevented in advance.

To this end, the system for providing a ubiquitous weather information service according to an aspect of the present invention comprises a first network group located in a service zone to sense and collect weather information of the service zone; And when the collected weather information is provided, broadcast the received weather information into the service zone, determine whether there is a disaster based on the weather information, and broadcast disaster information into the service zone according to the determined result. It may include a second network group.

If necessary, the first network group may include at least one sensor node configured to sense weather information of the service zone; And a sink node that collects the sensed weather information and transmits the weather information to the second network group.

If necessary, the second network group may include: a relay node broadcasting the weather information provided from the first network group in the service zone; At least one mobile node that broadcasts the received weather information into the service zone and propagates the mutual information when the weather information is provided; And receiving the weather information from the mobile node, judging whether or not the disaster is based on the received weather information, and transmitting the disaster information to all mobile nodes located in the service zone according to the determined result. It can include a node.

In this case, when the sink node transmits a beacon message to the mobile node in the second network group and receives a response message in response thereto, the sink node determines the mobile node that transmits the first received response message as the relay node. The collected weather information may be transmitted to the determined relay node.

In addition, the mobile node may be a mobile phone, a personal digital assistant (PDA), or a notebook computer. The mobile node may output the received weather information or the disaster information through a display or an audio output unit so that a user may know. When the mobile node receives a message for transmitting weather information from different service zones, the mobile node may determine a service zone to which it belongs based on an ID for identifying a service zone included in the first received message.

In this case, the weather information may include at least one of temperature, humidity, air pressure, snowfall, rainfall, wind direction, and wind speed in the service zone.

If necessary, the system for providing a ubiquitous weather information service according to the present invention may further include a management server that receives the disaster information determined from the second network group through an internet network.

In this case, the first network group may be a set of nodes constituting a wireless sensor network or a ubiquitous sensor network, and the second network group may be a set of nodes constituting a mobile ad-hoc network.

According to another aspect of the present invention, a method for providing a ubiquitous weather information service includes sensing and collecting weather information in a service zone; If the collected weather information is provided, broadcasting the received weather information in the service zone; And determining whether or not a disaster is based on the weather information and broadcasting disaster information into the service zone according to the determined result.

In the broadcasting of the weather information in the service zone, when one mobile node is provided with the collected weather information, the received weather information may be broadcast to and propagated to other mobile nodes located in the service zone. have.

In the broadcasting of the disaster information in the service zone, when the zone master node receives the weather information broadcasted from any one mobile node, the disaster information is determined based on the received weather information. Accordingly, the disaster information can be broadcast and propagated to all mobile nodes located in the service zone.

If necessary, the method for providing a ubiquitous weather information service according to the present invention may further include providing the disaster information to a management server through an internet network according to the determined result.

Hereinafter, a system and a method for providing a ubiquitous weather information service according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5.

That is, the present invention collects weather information in a specific area through a wireless sensor network in order to provide weather and disaster information to a user only by wireless communication between the sensor and the mobile terminal without the help of a wired network in a mountainous area where it is difficult to establish a wired infrastructure. The collected weather information or the disaster information determined based on the broadcast information is to be broadcasted and propagated between mobile terminals constituting the mobile ad-hoc network.

1 is an exemplary view showing the structure of a schematic system according to an embodiment of the present invention.

As shown in FIG. 1, the schematic system according to the present invention includes a first network group 100, a relay node 201, a mobile node 202, a sensor node 101, a sink node 102, and the like. The second network group 200 including the zone master node 203, the access point 300, the gateway 400, the management server 500, and the like may be configured.

The first network group 100 is a collection of nodes constituting a wireless sensor network or a ubiquitous sensor network. The first network group 100 is installed in a specific area, i.e., in a service zone, to provide weather information such as temperature, At least one sensor node 101 which senses humidity, air pressure, snowfall, rainfall, wind direction, wind speed, etc. and a sink node which collects weather information sensed from each sensor node and provides collected weather information to a second network group ( 102) and the like.

Such a wireless sensor network refers to a network of small sensor nodes (several tens to thousands) that can communicate with each other by using sensor radio frequency (RF).

The second network group 200 is a group of nodes constituting a mobile ad-hoc network. The second network group 200 receives weather information from sink nodes of the first network group and broadcasts it in a service zone. The relay node 201, at least one mobile node 202 that receives the broadcasted weather information and outputs the weather information, and receives the weather information from the mobile node, determine whether or not a disaster based on the provided weather information. According to the result, it may consist of a zone master node 203 or the like that broadcasts disaster information to all mobile nodes located in the service zone.

Such a mobile ad-hoc network refers to a mechanism for exchanging information using RF signals by establishing a network between mobile nodes in an area where infrastructure is difficult with network devices.

In this case, the relay node 201 may be a node having a fixed location, but may be one of mobile nodes that can move. For example, the mobile node 202 may be a mobile phone, a personal digital assistant (PDA), a laptop, or the like. It can be a comprehensive concept.

The zone master node 203 in the second network group 200 accesses the AP 300 in order to inform disaster related information, for example, a resident center, a fire station, a police station, or a 119 center, through the Internet network. By providing to the management server 500 that is operated by the relevant institution through, so that quick action according to the disaster information can be made.

As described above, the present invention collects weather information in a specific region through a wireless sensor network and broadcasts weather information collected or whether a disaster is determined based on the broadcast to a mobile terminal constituting a mobile ad-hoc network, thereby effectively weathering the weather. Information services can be provided.

2 is an exemplary view showing a method for transmitting weather information according to an embodiment of the present invention.

As shown in FIG. 2, the plurality of sensor nodes in the first network group are located in different areas in the service zone to periodically sense weather information (S210) and transmit the sensed weather information to the sink node, and sink node. In operation S220, weather information may be collected from a plurality of sensor nodes.

The sink node may transmit the collected weather information to the relay node in the second network group (S230).

FIG. 3 is an exemplary diagram for describing an operation principle of a node in the first network group shown in FIG. 1.

As shown in FIG. 3, assuming that there are sensor nodes b1, b2, b3, c1, and c2, and sensor nodes c1 and c2 are subordinate nodes of the sensor node b3, the sensor nodes b1 and b2 are weather information that they sense. Is directly transmitted to the sink node a1, the sensor nodes c1 and c2 transmit the weather information sensed by the sensor node b3 so that the sensor node b3 may relay it to the sink node a1. Of course, the sensor node b3 may also transmit the weather information sensed by the sensor node b3 to the sink node a1.

At this time, the message for periodically transmitting the weather information sensed periodically by the sensor nodes b1, b2, b3, c1, c2 to the sink node a1 of the highest level is an ID for identifying a corresponding service zone, and a unique sequence (SN) for each message. Number), an ID of a destination node representing a sink node, an ID of a source node representing a sensor node, weather information, and the like.

When the sink node a1 collects weather information from each sensor node b1, b2, b3, c1, and c2, the sink node a1 may transmit the collected weather information to a relay node in the second network group. If the relay node is any one of the mobile nodes other than the specific node whose location is fixed, the sink node may determine one mobile node closest to the mobile node as the relay node.

In order to determine the relay node closest to such distance, the sink node may broadcast a beacon message in the service zone and receive a response message in response to it, for example, receiving the first received response message. By determining the transmitted mobile node as a relay node, it is possible to provide collected weather information to the determined relay node.

In this case, although the present invention determines the mobile node having the closest distance as a relay node, the present invention is not limited thereto, and the transmission sensitivity of the beacon message is used as a reference for transmitting the weather information to the mobile node and related organizations more quickly and accurately. The relay node may be determined in consideration of the reception sensitivity of the response message.

Thereafter, when the relay node in the second network group is provided with the collected weather information, the relay node may broadcast the provided weather information in the service zone (S240). In this case, the relay node may broadcast the calculated average value by calculating an average value of the received weather information.

As a result, when the mobile node in the service zone receives the weather information, the mobile node broadcasts the received weather information to propagate the weather information between all mobile nodes (S250), and displays the received weather information for the user to check. There is (S260).

In addition, the zone master node can notify the relevant organization of the weather information through the Internet network, that is, access to the AP for interworking with the Internet network and notify the management server operated by the relevant organization through the gateway and accordingly the related organization. You can also monitor weather information.

FIG. 4 is an exemplary diagram for describing an operation principle of a node in the second network group shown in FIG. 1.

As shown in FIG. 4, when the relay node M1 is provided with weather information, the relay node M1 broadcasts the received weather information into its service zone to which the mobile node M2, M3, M4, M5, M6, M7, M8, M9, It may propagate to the M10 and the zone master node Z1. The message for transmitting such weather information may include an ID for identifying a corresponding service zone, a unique SN for each message, and weather information.

That is, relay node M1 broadcasts weather information, and all mobile nodes M2, M3, M4, M5, M6, M7, M8, M9, and M10 that receive it broadcast it again in the service zone to be in the second network group. It can be propagated to all nodes that are present, that is, M1, M2, M3, M4, M5, M6, M7, M8, M9, M10, Z1. As such, all relays or mobile nodes broadcast weather information, thereby reducing the probability of not receiving weather information.

At this time, each node may be provided with weather information broadcast from different nodes, but the first and subsequent messages are discarded based on the SN included in the message providing the weather information, thereby continuing the same weather information. You can choose not to broadcast it.

In addition, the relay node M1 provides weather information, but receives the weather information sensed from all sensor nodes, calculates an average value of the received weather information, and broadcasts only the calculated average value to the mobile nodes M2, M3, M4, M5, It may propagate to M6, M7, M8, M9, M10 and zone master node Z1.

In addition to the relay node M1, the mobile nodes M2, M3, M4, M5, M6, M7, M8, M9, and M10 may output the weather information through a display or an audio output unit so that the user can know the weather information.

In this case, since the mobile nodes M9 and M10 are also included in the service zone A and the neighboring service zone B, the mobile nodes M9 and M10 may receive broadcasted weather information from the two service zones A and B, respectively. In this case, the mobile nodes M9 and M10 must determine a service zone to which they belong. For example, the mobile nodes M9 and M10 can determine their own service zone based on the ID included in the message for transmitting the first received weather information.

According to the determination of the service zone A, the mobile nodes M9 and M10 may later be provided with weather information from the relay node M1 or disaster information from the zone master node Z1.

In this case, although the present invention broadcasts weather information to all mobile nodes in the second network group, the weather information may be delivered according to a preset routing path. For example, if relay node M1 delivers weather information to mobile nodes M2, M4, and M5, respectively, the weather information is transferred from mobile node M2 to M3, from M4 to zone master node Z1, and from M5 to M6 according to a predetermined routing path. It may be delivered to M7, M8, M9 and M10, respectively.

5 is an exemplary view showing a method for transmitting disaster information according to an embodiment of the present invention.

As shown in FIG. 5, when the zone master node receives weather information broadcasted from a relay node or a mobile node (S510), the zone master node compares the received weather information with a preset threshold (S520) to determine whether there is a disaster in the corresponding service zone. Can be determined. That is, when the weather information is greater than the preset threshold, the zone master node may determine that the corresponding service zone is a disaster situation (S530).

According to the determination result, the zone master node may broadcast disaster information to all mobile nodes located in the service zone (S540). Similar to the above-mentioned message for transmitting weather information, the zone master node transmits disaster information to the corresponding service zone. An ID for identifying may be included.

Accordingly, when all the mobile nodes in the service zone receive the disaster information, broadcast the received disaster information to propagate the disaster information between all mobile nodes (S550), and display the received disaster information so that the user can check it. There is (S560).

Subsequently, the zone master node may notify the related organization of the disaster information through the Internet network, that is, access the AP for interworking with the Internet network and notify the management server operated by the related organization through the gateway (S570). As a result, relevant agencies can respond to disaster information.

As described above, the present invention collects weather information in a specific area through a wireless sensor network and broadcasts the collected weather information or a disaster determined based thereon to a mobile terminal constituting the mobile ad-hoc network, thereby providing a mobile terminal user. It is possible to prevent the damage caused by sudden disasters by ensuring that appropriate measures can be taken.

The system and method for providing the ubiquitous weather information service according to the present invention can be modified and applied in various forms within the scope of the technical idea of the present invention and are not limited to the above embodiments. In addition, the embodiments and drawings are merely for the purpose of describing the contents of the invention in detail, not intended to limit the scope of the technical idea of the invention, the present invention described above is common knowledge in the technical field to which the present invention belongs As those skilled in the art can have various substitutions, modifications, and changes without departing from the technical spirit of the present invention, it is not limited to the above embodiments and the accompanying drawings, of course, and not only the claims to be described below but also claims Judgment should be made including scope and equivalence.

1 is an exemplary view showing the structure of a schematic system according to an embodiment of the present invention.

2 is an exemplary view showing a method for transmitting weather information according to an embodiment of the present invention.

FIG. 3 is an exemplary diagram for describing an operation principle of a node in the first network group shown in FIG. 1.

FIG. 4 is an exemplary diagram for describing an operation principle of a node in the second network group shown in FIG. 1.

5 is an exemplary view showing a method for transmitting disaster information according to an embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: first network group

101: sensor node

102: sink node

200: second network group

201: relay node

202: mobile node

203: zone master node

300: AP

400: gateway

500: management server

Claims (13)

A first network group located in a service zone to sense weather information of the service zone and collect it; And When the collected weather information is provided, brostcasting the received weather information into the service zone, determining whether or not a disaster is based on the weather information, and broadcasting disaster information into the service zone according to the determined result. 2 network groups System for providing a ubiquitous weather information service comprising a. According to claim 1, The first network group, A plurality of sensor nodes located in different areas within the service zone to sense weather information; And And a sink node for collecting the sensed weather information and transmitting it to the second network group. The method according to claim 1 or 2, The second network group, A relay node broadcasting the weather information provided from the first network group in the service zone; At least one mobile node that broadcasts the received weather information into the service zone and propagates the mutual information when the weather information is provided; And Upon receiving the weather information from the mobile node, the zone master node broadcasts and propagates the disaster information to all mobile nodes located in the service zone according to the determined result based on the determination result of the disaster based on the received weather information. System for providing a ubiquitous weather information service comprising a. The method of claim 3, The sink node, When a beacon message is transmitted to a mobile node in the second network group and a response message is received in response thereto, the mobile node that transmits the first received response message is determined as the relay node and collected in the relay node determined. System for providing a ubiquitous weather information service, characterized in that for transmitting the weather information. The method of claim 3, The mobile node, Any one of a mobile phone, a personal digital assistant (PDA), a notebook computer, and provides the ubiquitous weather information service, which outputs the received weather information or the disaster information through a display or an audio output unit so that a user can know. system. The method of claim 3, The mobile node, When receiving a message for transmitting weather information from different service zones, the ubiquitous weather information service is characterized by determining the service zone to which it belongs based on the ID for identifying the service zone included in the first received message. System for Providing. According to claim 1, The weather information is, And at least one of temperature, humidity, pressure, snowfall, rainfall, wind direction, and wind speed in the service zone. According to claim 1, A management server operated by a related organization that receives the disaster information determined by the second network group through an internet network. System for providing a ubiquitous weather information service further comprising. According to claim 1, The first network group is a set of nodes constituting a wireless sensor network or a ubiquitous sensor network, and the second network group is a set of nodes constituting a mobile ad-hoc network. system. Sensing weather information in the service zone and collecting the weather information; If the collected weather information is provided, broadcasting the received weather information in the service zone; And Determining whether there is a disaster based on the weather information and broadcasting disaster information in the service zone according to the determined result Method for providing a ubiquitous weather information service comprising a. The method of claim 10, Broadcasting the weather information in the service zone, When any one mobile node is provided with the collected weather information, it provides the ubiquitous weather information service by broadcasting the propagated weather information to other mobile nodes and zone master nodes located in the service zone. How to. The method of claim 11, wherein Broadcasting the disaster information in the service zone, When the zone master node receives the weather information broadcasted from any one of the mobile nodes, it is determined whether there is a disaster based on the received weather information, and all the mobile nodes having disaster information located in the service zone according to the determined result. A method for providing a ubiquitous weather information service, characterized in that for broadcasting to broadcast. The method of claim 10, Providing the disaster information to a management server operated by a relevant institution through an internet network according to the determined result; Method for providing a ubiquitous weather information service further comprising.

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