KR101512747B1 - Plug and play sensor network system using set-top proxy and method for providing application service using the system - Google Patents

Abstract

The present invention is related to a plug-and-play sensor network system using a set-top proxy and a method for providing application services using the system. According to an embodiment of the present invention, the sensor network system includes: a multiple number of sensor nodes which transmit sensing data collected on things or environment to other devices; a smart device which requests the sensing data by approaching the sensor nodes in a plug-and-play manner; and the set-top proxy which is embedded in the Internet-connected set-top box, mediates communications between the sensor nodes and the smart device, collects and stores the sensing data from the sensor nodes through the ZigBee interface, and control home appliances linked with the set-top box through a fixed-line and wireless links. According to an embodiment of the present invention, by using the set-top proxy embedded in the set-top box which mediates communications between the sensor nodes and the smart device, the sensor nodes can collect and store sensor information and sensing data and transmit the sensor information and sensing data to the smart device when there is a request. In this case, the sensor nodes and the smart device are linked with the set-top proxy through the plug-and-play function, which will make it easier to add or remove sensor nodes.

Description

TECHNICAL FIELD [0001] The present invention relates to a plug-and-play sensor network system using a set top proxy, and a method of providing an application service using the system.

More particularly, the present invention relates to a plug-and-play sensor network system using a set top proxy and a method of providing an application service using the system.

Ubiquitous Sensor Network (USN) means a network configured to collect information collected by various sensors wirelessly. As technologies such as WPAN (Wireless Personal Area Network) and Ad-hoc Network Ubiquitous sensor network (USN) technology is being activated.

However, in order to construct a conventional ubiquitous sensor network (USN), an expensive gateway is required, and it is difficult for an ordinary user to directly install such a gateway. Also, it is not easy to add another sensor to the ubiquitous sensor network (USN), and it is not easy to add a new sensor node or remove an existing sensor node. In the conventional ubiquitous sensor network (USN), a wall pad, a personal computer (PC), and a feature phone are used to monitor and control the sensor node, There is a problem that it is inconvenient to both the user and the developer.

The object of the present invention is to collect sensor information and sensing data from a sensor node using a set top proxy built in a set-top box and relay communication between the sensor node and the smart device, and transmit the sensor information and sensing data to the requesting smart device In this case, the sensor node and the smart device are connected to the set-top proxy through the Plug and Play (PnP) function, so that the sensor node can be easily added or removed. Accordingly, the smart device collects various information from the sensor node, The present invention provides a sensor network system and a method of providing an application service using the sensor network system, which can utilize the existing web service and sensing information as a new mashup service based on the cloud.

A sensor network system according to an embodiment of the present invention includes: a plurality of sensor nodes for collecting sensing data about an object or environment and transmitting the sensing data to another device; A smart device accessing the sensor node in a plug-and-play manner to request the sensing data; And a set-top box connected to the Internet, relaying communication between the sensor node and the smart device, collecting and storing sensor information and the sensing data from the sensor node through a ZigBee interface, And a set-top proxy for controlling connected household appliances.

The plurality of sensor nodes communicate with each other via a ZigBee interface and can undergo a registration procedure to communicate with the settop proxy.

The smart device may access the settop proxy to inquire the sensor information, internally add a virtual sensor node, and inquire the sensing data through the virtual sensor node.

The smart device may logically synchronize the virtual sensor node and the sensor node using a profile of the sensor node and a mapping table including the sensing data.

The sensor network system may further include a mashup server connected to the settop proxy through the Internet, receiving the sensing data from the settop proxy, and providing the application service by merging the sensing data with other contents.

The mashup server may provide the smart device with at least one of the sensing data or the application service through a cellular network.

The mashup server may provide a mapping table including a sensor profile for sensor virtualization to the smart device.

The set-top proxy may provide means for registering or removing the ZigBee network through a button input in a ZigBee network environment and verifying the validity of the ZigBee network connection using the web application server in the settop proxy.

The smart device may include an IEEE 802.15.4 communication module, and the IEEE 802.15.4 communication module may include an IEEE 802.15.4 communication antenna mounted inside an outer cover of the smart device.

According to an embodiment of the present invention, sensor information and sensing data are collected from a sensor node using a set top proxy built in a set-top box and relayed between a sensor node and a smart device, and transmitted to a requesting smart device At this time, the sensor node and the smart device are connected to the set-top proxy through the Plug and Play (PnP) function, so that the sensor node can be easily added or removed. Accordingly, the smart device can collect various information from the sensor node and utilize it by itself, or can utilize the cloud-based new mashup service by merging the existing web service and the sensing information.

1 is a diagram illustrating a configuration of a sensor network system according to an embodiment of the present invention.
2 is a diagram illustrating a Plug and Play (PnP) protocol and procedure in a sensor network system according to an embodiment of the present invention.
3 is a diagram illustrating a security standard application and a data transmission method in a sensor network system according to an embodiment of the present invention.
4 is a diagram illustrating an example of application of a sensor network system according to an embodiment of the present invention.
5 to 8 are views showing a screen configuration of an application executed in a terminal according to an embodiment of the present invention.
9 is a diagram illustrating a configuration of a smart device according to an embodiment of the present invention.

The present invention may have various embodiments, and particular embodiments are illustrated and described in the drawings. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all variations that fall within the spirit and scope of the invention.

Unless otherwise defined, terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Also, terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the contextual meaning of the related art, and should not be construed as an ideal or overly formal sense.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but there may be other elements in between . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present invention, the singular forms of which shall be construed as including plural referents unless the context clearly dictates otherwise. In particular, the terms "comprise" or "having" are used to specify that a feature, a number, a step, an operation, an element, a component, or a combination thereof, , Steps, operations, elements, components, or combinations thereof, as a matter of principle.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals are used for the same components, although they are shown in different drawings.

1 is a diagram illustrating a configuration of a sensor network system according to an embodiment of the present invention.

1, a sensor network system according to an embodiment of the present invention includes a plurality of sensor nodes 110-1 to 110-n (not shown) collecting sensing data on an object or environment and transmitting the sensing data to another device A smart device 140 for accessing the sensor nodes 110-1 to 110-n in a plug and play (PnP) manner and requesting the sensing data, a set- and transmits the sensor information 110-1 to 110-n from the sensor nodes 110-1 to 110-n via the ZigBee interface. A set top proxy 120 for collecting and storing the sensing data and controlling an appliance connected to the set top box through a wired / wireless network, a set top proxy 120 connected to the set top proxy 120 through the Internet 160, Receives the sensing data, and outputs the sensing data Is connected to the mashup server 180, and a mashup server 180 to the fusion with other content providing application services may include a content server 190 for providing content to the mashup server 180.

Here, the plug-and-play (PnP) in the sensor nodes 110-1 to 110-n can automatically perform various sensor settings and related initial procedures by broadcasting in a broadcast manner when power is applied Plug-and-play (PnP) in the sensor network system allows the user to easily access the sensor nodes 110-1 to 110-n through the smart device 140 once the sensor nodes 110-1 to 110- -n) and recognizes that the sensing data can be collected.

The sensor nodes 110-1 to 110-n are connected to the set-top proxy 120 through a plug and play (PnP) function to transmit a profile of a physical sensor mounted on the sensor nodes 110-1 to 110- To the set-top proxy 120 and to respond to a sensing data request from the set-top proxy 120. In addition, the sensor nodes 110-1 to 110-n may mix the main power (commercial power) and the battery, and the sensor nodes 110-1 to 110-n may communicate with each other via the ZigBee interface can do.

Meanwhile, when the sensor nodes 110-1 to 110-n and the smart device 140 perform peer-to-peer (P2P) communication, the smart device 140 transmits data to the sensor nodes 110- 1 to 110-n, the sensor nodes 110-1 to 110-n periodically broadcast their specifications. In this case, the probability that information of the sensor nodes 110-1 to 110-n having a constant broadcasting period is collected by the smart device 140 is inversely proportional to the broadcasting period of the sensor nodes 110-1 to 110-n . That is, if the broadcasting period of the sensor nodes 110-1 to 110-n is lengthened, the smart device 140 transmits the sensor nodes 110-1 to 110-n within the broadcasting period of the sensor nodes 110-1 to 110- n may not find the sensor nodes 110-1 to 110-n beyond the radio frequency (RF) coverage of the sensor nodes 110-1 to 110-n.

In order to compensate for this, in the sensor network system according to the embodiment of the present invention, the set-top proxy 120 is provided to store information of all the sensor nodes 110-1 to 110-n in the set-top proxy 120, The smart device 140 can provide sensor information, sensing data, and the like stored in the set top proxy 120 to the smart device 140 when the smart device 140 makes a request. That is, the sensor network system according to one embodiment may operate in a form in which the smart device 140 requests data to the set-top proxy 120.

In order for the sensor nodes 110-1 to 110-n to communicate with the settop proxy 120, the settop proxy 120 must be registered in the settop proxy 120 in advance. (110-1 to 110-n). That is, only the sensor information and the sensing data of the registered sensor nodes 110-1 to 110-n can be transmitted to the settop proxy 120, and once registered, the sensor nodes 110-1 to 110- Can participate in the sensor network without.

The set top proxy 120 can register or remove the ZigBee network through external button input without complicated procedures for changing or initializing the network in the ZigBee network environment. (WAS) to provide a means for the user to verify the validity of a ZigBee network connection.

The set top proxy 120 may have a special Service Set Identifier (SSID) prefix and the smart device 140 may have an Access Point (SSID) prefix with this Service Set Identifier (SSID) prefix. AP as a set-top proxy 120 and attempt to connect to this access point (AP). In addition, the set top proxy 120 may include a dynamic host configuration protocol (DHCP) function to assign an Internet Protocol (IP) to the smart device 140, Can access a Plug and Play (PnP) application loaded on the set-top proxy 120 using the allocated Internet Protocol (IP) information.

The set top proxy 120 may be configured such that the sensor nodes 110-1 to 110-n and the smart device 140 are not located within a hop distance or the smart device 140 is a wireless device of the IEEE 802.15.4 standard The sensor nodes 110-1 to 110-n and the smart device 140 can be matched if communication is not supported. The set top proxy 120 collects and stores sensor information and sensing data from the sensor nodes 110-1 to 110-n and broadcasts the collected information to the smart device 140 or the mashup server 180 .

In particular, the set-top proxy 120 may be connected to the Internet 160 via the wireless router 130 or the like and may be connected to the smart device 140 through a plug and play (PnP) The robot cleaner 152, and the air cleaner 153, which are connected to the television 151, The set-top proxy 120 may include a ZigBee interface, and the set-top proxy 120 may perform a ZigBee coordinator function. In another embodiment, the set-top proxy 120 may include a Wi-Fi interface or a Bluetooth interface May be additionally provided.

Here, in the case of the set-top proxy 120 supporting only the IEEE 802.15.4 wireless communication interface, the IEEE 802.15.4 standard method can be used as a communication interface between the sensor nodes 110-1 to 110-n and the smart device 140 have. For example, when the sensor nodes 110-1 to 110-n support the ZigBee interface, the set-top proxy 120 matches the sensor nodes 110-1 to 110-n via the ZigBee network, Lt; RTI ID = 0.0 > 140 < / RTI > When the smart device 140 does not support the IEEE 802.15.4 wireless communication interface, the sensor nodes 110-1 to 110-n may support a Wi-Fi or Bluetooth interface or may be connected to a set-top proxy 130 connected to the wireless router 130 120 may be used to match the smart device 140.

The smart device 140 may access the set-top proxy 120 to inquire sensor information, internally add a virtual sensor node, and inquire the sensing data. At this time, the smart device 140 uses the mapping table including the profile of the sensor nodes 110-1 to 110-n and the sensing data to transmit the virtual sensor node and the sensor nodes 110-1 to 110-n Logically synchronized. Meanwhile, the smart device 140 may be a smart phone, a smart pad, a smart TV, a smart car, and the like, and may include a computer or other household appliances.

Here, the virtual sensor node means a sensor that a user experiences in the smart device 140. The user can use a virtual sensor node or a sensor application in the smart device 140 to detect a real- Ubiquitous Sensor Network (USN), which operates in conjunction with information, can be experienced and utilized.

The mashup server 180 may provide the mashup service using the sensor information and the sensing data received from the set top proxy 120. The mashup server 180 may receive the sensing data through the cellular network 170 or an application service One or more of which may be provided to the smart device 140. Here, a mashup is a fusion of information and services provided on the Web to create a new software, a service, or a database. In the sensor network system, a variety of information collected through the sensor node is fused, . These mashup services include mashup services between smart devices using sensing information provided by various smart devices, and mashup services between sensor applications that provide new sensor applications by combining sensor applications provided by smart devices.

The mashup server 180 may provide the mapping table including the sensor profile and sensing data for sensor virtualization to the smart device 140 so that the sensor nodes 110-1 to 110- Lt; RTI ID = 0.0 > synchronization. ≪ / RTI >

2 is a diagram illustrating a Plug and Play (PnP) protocol and procedure in a sensor network system according to an embodiment of the present invention.

Referring to FIG. 2, a smart device can search for a Wi-Fi access point (AP) at a level of the smart device operating system 220 regardless of the smart device application 210, (SSID). The set-top proxy may be connected to the smart device through a Wi-Fi interface by performing a Wi-Fi access point (AP) function. In order to selectively connect the set-top proxy in the smart device, a special type service set identifier (SSID) such as SmartPnP00, SmartPnP01, ) Prefix.

Here, the smart device application 210 may be used to automatically connect a set-top proxy having a specific service set identifier (SSID) prefix with a smart device, or a service of a set-top proxy among the retrieved Wi-Fi access point (AP) The set identifier (SSID) can be selected to manually connect the smart device to the set-top proxy.

When the smart device operating system 220 requests the set top proxy operating system 230 to access the set top proxy operating system 230, the set top proxy operating system 230 transmits the Internet protocol (IP) to the smart device operating system 220 using the dynamic host setting communication protocol Can be assigned. At this time, if the set top proxy is connected to a wide area network (WAN), surfing the Internet can be performed through a web browser installed in the smart device.

The smart device application 210 then obtains the address of the settop proxy using the assigned internet protocol (IP) and establishes a TCP / IP connection with the settop proxy application 240 and then performs a Plug and Play (PnP) service can do. In addition, the smart device application 210 requests authentication of the settop proxy application 240 through a password or the like and receives permission from the settop proxy application 240 to read / write the object mounted on the settop proxy. Write (Read / Write) becomes possible.

If the sensor node is a Zigbee sensor node in the sensor network system according to an exemplary embodiment, the set top proxy performs a ZigBee coordinator function, and the sensor node can transmit sensor information and sensing data to the set top proxy through the ZigBee network. The settop proxy collects sensor information and sensing data through the ZigBee coordinator and stores it in the object database. The smart device can access the set-top proxy and read or update the contents of the object database.

Here, when updating the contents of the object database, the set top proxy can control the corresponding actuator connected to the ZigBee network. In addition, the set top proxy forwards the connection from the smart device to the internal server, and the internal server can respond to the sensor information and the sensing data request from the smart device in association with the object database.

3 is a diagram illustrating a security standard application and a data transmission method in a sensor network system according to an embodiment of the present invention.

Referring to FIG. 3, a ZigBee terminal device and a ZigBee coordinator according to an embodiment may be connected using a basic association procedure of a ZigBee PRO. At this time, data can be encrypted with a pre-set network key, and the chain value is transmitted after using the encrypted section. Then, an encryption key to be used next is generated and used at a later connection, and the data is encrypted with an encrypted key and transmitted.

When the ZigBee terminal device joins the ZigBee network, the associated ZigBee network related information such as the PAN ID, the channel information, the address, and the like can be stored in the nonvolatile memory of the Zigbee terminal device, It is possible to directly access the previously registered ZigBee network by using the stored information. At this time, when the ZigBee terminal device is initialized, the ZigBee network related information stored in the ZigBee terminal device is deleted so that the ZigBee terminal device can join the new ZigBee network.

The ZigBee terminal device can be initialized by the factory initialization button. When the ZigBee terminal device without the factory initialization button is re-started, the stored information is deleted and the new ZigBee network can be subscribed to the ZigBee network. At this time, Must be in a Plug and Play (PnP) standby state. Meanwhile, the Plug and Play (PnP) procedure in the sensor network system according to an embodiment is as follows.

First, a set-top proxy is plugged and played (PnP) standby by pressing a button attached to a set-top proxy or accessing an embedded web server of the set-top proxy through a web browser of a computer or a smart device, State. At this time, the Plug and Play (PnP) standby state can be set to be valid only for a predetermined time, for example, one minute.

Subsequently, when the ZigBee terminal device is initialized to the factory, the ZigBee terminal device attempts to connect the set-top proxy to the plug-and-play (PnP) by sequentially changing channels from 0 to 15. At this time, if the set top proxy receives a plug and play (PnP) connection request from the Zigbee terminal device within a predetermined time, the Zigbee terminal device can be allowed to join the network. On the other hand, the subscription request message received after the plug-and-play (PnP) waiting time has passed is ignored, and it is possible to confirm whether all the ZigBee terminal devices are normally registered through the settop proxy built-in web.

Table 1 and Table 2 summarize the data communication protocol of the sensor network system according to one embodiment. Specifically, Table 1 shows the basic information of the message used for the Bluetooth communication between the smart device and the Plug and Play (PnP) Structure, and Table 2 defines the data code.

Fields Size Description Header Flag One Start delimiter (0x24) Length 21 Length of data excluding header Command One Message Command Payload N Message Payload (variable depending on command) Checksum One Length ~ Payload Data XORed

Fields Size Description Header Flag One Start delimiter (0x24) Length Length of data excluding header Command One Message Command Device Type 2 0x1002 (environmental sensor) MAC 8 Device Unique ID Interval 2 Device data transfer cycle (sec) Location 16 String
Sensor
(One)
Msg Info 2 0x0004 (CO2) Data Type 0x07 (Float) Length One 0x04 (Float Type Length) Data N Measurement data
Sensor
(2)
Msg Info 2 0x0005 (temperature) Data Type 0x07 (Float) Length One 0x04 (Float Type Length) Data N Measurement data
Sensor
(3)
Msg Info 2 0x0006 (Humidity) Data Type 0x07 (Float) Length One 0x04 (Float Type Length) Data N Measurement data
Sensor
(4)
Msg Info 2 0x0007 (VOCs) Data Type 0x07 (Float) Length One 0x04 (Float Type Length) Data N Measurement data

4 is a diagram illustrating an example of application of a sensor network system according to an embodiment of the present invention.

Referring to FIG. 4, the sensor nodes 110-1 to 110-n relay the communication between the sensor nodes 110-1 to 110-n and the smart device 140 by being embedded in a set-top box connected to the Internet 160, And the robot cleaner 152 can be controlled using a set top proxy 120 for collecting and storing sensor information and sensing data.

Specifically, the robot cleaner 152 recognizes the position of the robot cleaner 152 through a plurality of IP cameras 154-1 to 154-n installed in the main areas of the room or a video image captured by a camera built in the robot cleaner 152, The proxy 120 may transmit the location information of the robot cleaner 152 to the smart device 140. The smart device 140 transmits various control commands to the set top proxy 120 through the Internet 160 or the cellular network 170, such as changing the cleaning area or time based on the location information of the robot cleaner 152 The set top proxy 120 may transmit the control command received from the smart device 140 to the robot cleaner 152 and then confirm the execution result of the control command. Meanwhile, the mashup server 180 may analyze the sensing data and send an alarm to an alarm server (not shown) if a problem is found, or notify the user of the danger through the sensor application running on the smart device 140.

5 to 8 are views showing a screen configuration of an application executed in a terminal according to an embodiment of the present invention.

Referring to FIG. 5, a summary information list about a sensor node is displayed on a main screen of an application executed in a terminal according to an exemplary embodiment. Meanwhile, in the sensor network system according to the embodiment, the sensor node can be registered by operating the button of the sensor node or the button of the sensor node proxy, and the sensor node can be registered in the list immediately when the sensor node is registered. In addition, if the sensor node is turned off or the terminal is out of range of the radio frequency (RF) of the sensor node, the corresponding sensor node may be deleted from the list.

Referring to FIG. 6, detailed information about a sensor node is displayed on a sensor detailed information screen of an application executed in a terminal according to an exemplary embodiment. Meanwhile, in the sensor network system according to the embodiment, the sensing information can be displayed in units of one second, and information on the transmission period of the sensor node can be added to the protocol. In addition, if the sensing information is not transmitted more than three times based on the information about the transmission period of the sensor node, the corresponding sensor node can be deleted from the list.

Referring to FIG. 7, in the service mode screen of the application executed in the terminal according to the embodiment, the sensor mode can be set. Meanwhile, in the sensor network system according to the embodiment, the sensor node can be set to the normal mode or the alarm mode. If an abnormality is detected in the sensor node set in the alarm mode, the sensor node can be notified to the user through a push alarm.

Referring to FIG. 8, in the mashup service screen of the application executed in the terminal according to the embodiment, real-time sensing information and mashup server information are displayed. Meanwhile, the terminal according to an exemplary embodiment can collect various sensing information from a sensor node and utilize it for its own use, or can utilize a cloud-based new mashup service by merging existing web service and sensing information.

9 is a diagram illustrating a configuration of a smart device according to an embodiment of the present invention.

Referring to FIG. 9, a smart device according to an exemplary embodiment may include an IEEE 802.15.4 communication module. The embedded IEEE 802.15.4 communication module includes an IEEE 802.15.4 communication antenna And is provided in a form that can be connected to a power terminal or the like of the smart device. Meanwhile, the specification and sensing information of the sensor node collected through the built-in IEEE 802.15.4 communication module is transmitted to the SVM (Sensor Virtual Machine) of the smart device, and the virtual sensor Nodes can be created. In addition, the specification and sensing information of the sensor node may be transmitted to the mashup server. The mashup server may store the specification and sensing information of the sensor node by providing a virtual proxy, have.

According to the sensor network system according to an embodiment of the present invention, sensor information and sensing data are collected and stored from a sensor node using a set top proxy built in a set-top box and relaying communication between the sensor node and the smart device The sensor node and the smart device are connected to the set-top proxy through the Plug and Play (PnP) function, so that the sensor node can be easily added or removed. Accordingly, the smart device can collect various information from the sensor node and utilize it by itself, or can utilize the cloud-based new mashup service by merging the existing web service and the sensing information. Furthermore, users can freely share and distribute sensing information by easily participating in a sensor network, thereby providing a user-oriented life-style service, thereby creating a new smart life service based on a sensor network.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken in conjunction with the present invention. It will be understood that various modifications and changes may be made without departing from the scope of the present invention.

110-1 to 110-n: sensor node
120: Settop proxy
130: Router
140: Smart devices
151: Television
152: Robot cleaner
153: Air Purifier
154-1 to 154-n: IP camera
160: Internet
170: cellular network
180: mashup server
190: Content server
210: Smart Device Applications
220: Smart device operating system
230: Settop proxy operating system
240: Set top proxy application

Claims (9)

A plurality of sensor nodes collecting sensing data on an object or environment and transmitting the sensing data to another device;
A smart device accessing the sensor node in a plug-and-play manner to request the sensing data;
The smart card is installed in a set-top box connected to the Internet and relays communication between the sensor node and the smart device, collects and stores sensor information and sensing data from the sensor node through a ZigBee interface, A set-top proxy for controlling household appliances; And
And a mashup server for receiving the specification and sensing information of the sensor node from the smart device or transmitting the specification of the sensor node, the sensing information, and the mapping table for sensor virtualization to the smart device,
The sensor node automatically operates by broadcasting a sensor configuration and initial procedure in a broadcast manner,
The smart device accesses the set top proxy to inquire the sensor information, internally adds a virtual sensor node to inquire the sensing data transmitted from the mashup server through the virtual sensor node, The virtual sensor node and the sensor node are logically synchronized using the mapping table including the sensing data, and when the sensor node is registered, the virtual sensor node and the sensor node are registered in the list, If the radio frequency (RF) reach is out of range, the corresponding sensor node is deleted from the list
Sensor network system.
The method according to claim 1,
Wherein the plurality of sensor nodes communicate with each other via a ZigBee interface,
Sensor network system.
delete delete The method according to claim 1,
The mashup server is connected to the settop proxy through the Internet, receives the sensing data from the settop proxy, and provides a mapping table including a sensor profile to the smart device to logically synchronize the virtual sensor node and the sensor node , The sensing data is fused with other contents to provide an application service
Sensor network system.
6. The method of claim 5,
Wherein the mashup server provides at least one of the sensing data or the application service to the smart device through a cellular network
Sensor network system.
delete The method according to claim 1,
The set-top proxy provides means for registering or removing the ZigBee network through a button input in a ZigBee network environment and verifying the validity of the ZigBee network connection using the web application server in the set-top proxy
Sensor network system.
The method according to claim 1,
Wherein the smart device includes an IEEE 802.15.4 communication module and the IEEE 802.15.4 communication module includes an antenna for IEEE 802.15.4 communication mounted inside an outer cover of the smart device
Sensor network system.

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