WO2014007417A1 - Method of controlling sensor tag in wireless sensor network - Google Patents

Method of controlling sensor tag in wireless sensor network Download PDF

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Publication number
WO2014007417A1
WO2014007417A1 PCT/KR2012/005852 KR2012005852W WO2014007417A1 WO 2014007417 A1 WO2014007417 A1 WO 2014007417A1 KR 2012005852 W KR2012005852 W KR 2012005852W WO 2014007417 A1 WO2014007417 A1 WO 2014007417A1
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sensor
sensor tag
hub
link
tag
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PCT/KR2012/005852
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French (fr)
Korean (ko)
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곽윤식
김종찬
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주식회사 에이에스엔
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H04W84/22—Self-organising networks, e.g. ad-hoc networks or sensor networks with access to wired networks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • the present invention relates to sensor tags, and more particularly, to a method for controlling sensor tags by timing control in a wireless sensor network.
  • a wireless sensor network is largely composed of a sensor node and a sink node that collects and exports it to the outside. And, unlike the existing network, the wireless sensor network is not a means of communication, but an automatic remote information collection, and is widely used in various applications such as scientific, medical, military, and commercial purposes.
  • a wireless sensor network comprising a communication control device, a sensor tag group consisting of a plurality of sensor tags and a hub for performing a wireless relay function between the communication control device and the sensor tag group, if the sensor tag group
  • a wireless sensor network comprising a communication control device, a sensor tag group consisting of a plurality of sensor tags and a hub for performing a wireless relay function between the communication control device and the sensor tag group
  • an object of the present invention is to provide a method for controlling a sensor tag in a wireless sensor network, which can secure reliability by preventing communication collision between sensor tags.
  • a sensor tag control method in a wireless sensor network includes a hub for performing wireless communication with each other and a sensor tag group including a plurality of sensor tags.
  • a method of controlling a sensor tag any one sensor tag constituting the sensor tag group is operated after a link process with the hub to prevent communication collision with another sensor tag.
  • the linking process may include: requesting a link from the sensor tag to the hub; If the communication collision with another sensor tag does not occur, the hub transmits response data to the sensor tag requesting the link and accepts the link request. When the communication collision with another sensor tag occurs, the hub sends the response data to the sensor tag requesting the link. Rejecting a link request because it does not transmit.
  • the sensor tag may request a link to the hub when power is first turned on, and may switch to a power saving mode in an idle mode when the link request is rejected by the hub.
  • the response data may include time information and command information for synchronization, and the sensor tag may receive response data from the hub, and if the link with the hub is successful, the sensor tag may be synchronized with the hub based on the time information. For each measurement period included in the command information, the measured sensor information may be transmitted.
  • any one sensor tag constituting the sensor tag group operates after a link process with a hub to prevent communication collision with another sensor tag, communication collision between sensor tags does not occur, thereby ensuring reliability.
  • communication collision between sensor tags does not occur, thereby ensuring reliability.
  • FIG. 1 is a conceptual diagram of a wireless sensor network according to the present invention.
  • FIG. 2 is a flowchart illustrating a sensor tag control method in a wireless sensor network according to the present invention.
  • FIG. 1 is a conceptual diagram of a wireless sensor network according to the present invention
  • Figure 2 is a flow chart illustrating a sensor tag control method in a wireless sensor network according to the present invention.
  • the sensor tag control method in the wireless sensor network according to the present invention in particular, it is the technical gist that it is possible to secure the reliability by preventing communication collision between the sensor tags by the timing control.
  • the wireless sensor network includes a sensor tag group 120 including a hub 110 and a plurality of sensor tags (for example, a temperature and humidity sensor tag) for wireless communication with each other. And it comprises a communication control device 130 for wired communication with the hub (120).
  • a sensor tag group 120 including a hub 110 and a plurality of sensor tags (for example, a temperature and humidity sensor tag) for wireless communication with each other.
  • a communication control device 130 for wired communication with the hub (120).
  • the hub 110 performs wireless communication with the sensor tag group 120 to control the output of the sensor tag group 120.
  • the hub 110 receives a link request from the sensor tag group 120, the hub 110 links the link according to a communication collision. You can accept or reject it.
  • the sensor tag group 120 operates by analyzing command data received from the hub 110 after a link process with the hub 110.
  • the communication control device 130 is a kind of computer or control unit for controlling the sensor tag group 120 and transmits command data for controlling the sensor tag group 120 to the hub 110.
  • the wireless communication frequency band of the hub 110 and the sensor tag group 120 may be 424MHz or 433MHz, which is a high frequency band, to ensure a long recognition distance while being active.
  • any one sensor tag constituting the sensor tag group is operated after a link process with a hub to prevent communication collision with another sensor tag.
  • a link request is made from the sensor tag to the hub (S110 and S120). In other words, when the power is turned on, it tries to link with the surrounding hub.
  • the hub determines whether there is a communication collision with another sensor tag (S130).
  • the hub transmits response data to the sensor tag requesting the link and accepts the link request (S140). As a result, the link between the hub and the sensor tag succeeds and is completed.
  • the response data may include a hub ID, time information for synchronization and command information.
  • the sensor tag is not only able to communicate with another hub based on the hub ID of the response data, but also included in the command information of the response data in a synchronized state to the hub based on the time information of the response data.
  • the sensor information such as measured temperature and humidity is transmitted in real time, that is, in real time until the sensor information is reset (S150).
  • the hub does not transmit response data to the sensor tag requesting the link and rejects the link request (S160).
  • the sensor tag switches to a power saving mode in an idle mode when the link request is rejected by the hub (S170).
  • any one sensor tag constituting the sensor tag group operates after passing through a link process with the hub to prevent communication collision with another sensor tag. Communication collisions between sensor tags do not occur, thereby ensuring reliability.
  • the sensor tag control method in the wireless sensor network according to the present invention has been described according to a limited embodiment, the scope of the present invention is not limited to a specific embodiment, to those skilled in the art related to the present invention. Various alternatives, modifications, and changes can be made within the scope of the obvious.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

The present invention relates to a method of controlling a sensor tag in a wireless sensor network, and more particularly, to a method of controlling a sensor tag in a wireless sensor network that includes hubs performing wireless communication therebetween and a group of sensor tags including a plurality of sensor tags.

Description

무선 센서 네트워크에서의 센서 태그 관제 방법Sensor tag control method in wireless sensor network
본 발명은 센서 태그에 관한 것으로서, 특히 무선 센서 네트워크에서 타이밍 제어에 의해 센서 태그를 관제하는 방법에 관한 것이다. The present invention relates to sensor tags, and more particularly, to a method for controlling sensor tags by timing control in a wireless sensor network.
무선 센서 네트워크(WSN:Wireless Sensor Network)는 크게 센서 노드(Sensor Node)와 이를 수집하여 외부로 내보내는 싱크 노드(Sink Node)로 구성된 네트워크이다. 그리고, 이러한 무선 센서 네트워크는 기존의 네트워크와 다르게 의사소통의 수단이 아니라 자동화된 원격 정보 수집을 기본 목적으로 하며 과학적·의학적·군사적·상업적 용도 등 다양한 응용 개발에 폭넓게 활용되고 있다. A wireless sensor network (WSN) is largely composed of a sensor node and a sink node that collects and exports it to the outside. And, unlike the existing network, the wireless sensor network is not a means of communication, but an automatic remote information collection, and is widely used in various applications such as scientific, medical, military, and commercial purposes.
한편, 통신 제어 장치, 복수개의 센서 태그로 이루어진 센서 태그 그룹 및 상기 통신 제어 장치와 센서 태그 그룹의 사이에서 무선 중계 기능을 수행하는 허브를 포함하여 이루어지는 무선 센서 네트워크에서, 만약 상기 센서 태그 그룹을 이루는 어느 하나의 센서 태그가 허브와 통신을 수행할 때 다른 센서 태그와의 통신 충돌이 일어나게 되면 신뢰성이 저하되므로 통신 충돌을 방지해야 할 필요성이 있다. On the other hand, in a wireless sensor network comprising a communication control device, a sensor tag group consisting of a plurality of sensor tags and a hub for performing a wireless relay function between the communication control device and the sensor tag group, if the sensor tag group When any one sensor tag communicates with a hub, if a communication collision occurs with another sensor tag, reliability is deteriorated, so there is a need to prevent a communication collision.
이에 본 발명은 상기와 같은 필요성에 부응하기 위한 것으로서, 센서 태그들 간의 통신 충돌을 방지하여 신뢰성을 확보할 수 있도록 된 무선 센서 네트워크에서의 센서 태그 관제 방법을 제공하는데 그 목적이 있다. Accordingly, an object of the present invention is to provide a method for controlling a sensor tag in a wireless sensor network, which can secure reliability by preventing communication collision between sensor tags.
상기와 같은 목적을 달성하기 위하여 본 발명에 따른 무선 센서 네트워크에서의 센서 태그 관제 방법은, 서로 간에 무선 통신을 수행하는 허브와, 복수개의 센서 태그로 이루어진 센서 태그 그룹을 포함하여 이루어지는 무선 센서 네트워크에서 센서 태그를 관제하는 방법으로서, 상기 센서 태그 그룹을 이루는 어느 하나의 센서 태그는 다른 센서 태그와의 통신 충돌 방지를 위해 상기 허브와의 링크 과정을 거친 후에 동작하는 것을 특징으로 한다. In order to achieve the above object, a sensor tag control method in a wireless sensor network according to the present invention includes a hub for performing wireless communication with each other and a sensor tag group including a plurality of sensor tags. As a method of controlling a sensor tag, any one sensor tag constituting the sensor tag group is operated after a link process with the hub to prevent communication collision with another sensor tag.
여기에서, 상기 링크 과정은, 상기 어느 하나의 센서 태그는 상기 허브로 링크를 요청하는 단계와; 상기 허브는 다른 센서 태그와의 통신 충돌이 일어나지 않으면 상기 링크를 요청한 센서 태그로 응답 데이터를 전송하여 링크 요청을 수락하고, 다른 센서 태그와의 통신 충돌이 일어나면 상기 링크를 요청한 센서 태그로 응답 데이터를 전송하지 않아 링크 요청을 거부하는 단계를 포함하여 이루어질 수 있다. The linking process may include: requesting a link from the sensor tag to the hub; If the communication collision with another sensor tag does not occur, the hub transmits response data to the sensor tag requesting the link and accepts the link request. When the communication collision with another sensor tag occurs, the hub sends the response data to the sensor tag requesting the link. Rejecting a link request because it does not transmit.
또한, 상기 센서 태그는 처음 전원 ON 시 상기 허브로 링크를 요청하고, 상기 허브에서 링크 요청 거부 시 아이들 모드 상태인 전원 절감 모드로 전환할 수 있다. In addition, the sensor tag may request a link to the hub when power is first turned on, and may switch to a power saving mode in an idle mode when the link request is rejected by the hub.
또한, 상기 응답 데이터는 동기를 위한 시간 정보 및 명령 정보를 포함하고, 상기 센서 태그는 상기 허브로부터 응답 데이터를 수신하여 허브와의 링크가 성공하면 시간 정보에 기초하여 동기화된 상태에서, 상기 허브로 명령 정보에 포함된 측정 주기마다, 측정된 센서 정보를 전송할 수 있다. The response data may include time information and command information for synchronization, and the sensor tag may receive response data from the hub, and if the link with the hub is successful, the sensor tag may be synchronized with the hub based on the time information. For each measurement period included in the command information, the measured sensor information may be transmitted.
본 발명에 따르면, 센서 태그 그룹을 이루는 어느 하나의 센서 태그가 다른 센서 태그와의 통신 충돌 방지를 위해 허브와의 링크 과정을 거친 후에 동작함으로써 센서 태그들 간의 통신 충돌이 발생되지 않아 신뢰성을 확보할 수가 있다. According to the present invention, since any one sensor tag constituting the sensor tag group operates after a link process with a hub to prevent communication collision with another sensor tag, communication collision between sensor tags does not occur, thereby ensuring reliability. There is a number.
도 1은 본 발명에 따른 무선 센서 네트워크의 개념도. 1 is a conceptual diagram of a wireless sensor network according to the present invention.
도 2는 본 발명에 따른 무선 센서 네트워크에서의 센서 태그 관제 방법을 설명하는 흐름도. 2 is a flowchart illustrating a sensor tag control method in a wireless sensor network according to the present invention.
이하, 본 발명의 바람직한 실시예를 첨부된 도면들을 참조하여 상세히 설명한다. 본 발명을 설명함에 있어, 관련된 공지 구성 또는 기능에 대한 구체적인 설명이 본 발명의 요지를 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명은 생략한다. 또한, 이하에서 본 발명의 바람직한 실시예를 설명할 것이나, 본 발명의 기술적 사상은 이에 한정하거나 제한되지 않고 당업자에 의해 변형되어 다양하게 실시될 수 있음은 물론이다. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, the following will describe a preferred embodiment of the present invention, but the technical idea of the present invention is not limited thereto and may be variously modified and modified by those skilled in the art.
도 1은 본 발명에 따른 무선 센서 네트워크의 개념도, 도 2는 본 발명에 따른 무선 센서 네트워크에서의 센서 태그 관제 방법을 설명하는 흐름도이다. 1 is a conceptual diagram of a wireless sensor network according to the present invention, Figure 2 is a flow chart illustrating a sensor tag control method in a wireless sensor network according to the present invention.
본 발명에 따른 무선 센서 네트워크에서의 센서 태그 관제 방법은, 특히 타이밍 제어에 의해 센서 태그들 간의 통신 충돌을 방지하여 신뢰성을 확보할 수 있도록 된 것을 그 기술적 요지로 한다. The sensor tag control method in the wireless sensor network according to the present invention, in particular, it is the technical gist that it is possible to secure the reliability by preventing communication collision between the sensor tags by the timing control.
본 발명에 따른 무선 센서 네트워크는, 도 1에 도시한 바와 같이, 서로 간에 무선 통신을 하는 허브(110)와 복수개의 센서 태그(예를 들면, 온습도 센서 태그)로 이루어진 센서 태그 그룹(120), 그리고 상기 허브(120)와 유선 통신을 하는 통신 제어 장치(130)를 포함하여 이루어진다. As shown in FIG. 1, the wireless sensor network according to the present invention includes a sensor tag group 120 including a hub 110 and a plurality of sensor tags (for example, a temperature and humidity sensor tag) for wireless communication with each other. And it comprises a communication control device 130 for wired communication with the hub (120).
상기 허브(110)는 상기 센서 태그 그룹(120)의 출력 제어를 위해 센서 태그 그룹(120)과 무선 통신을 수행하는데, 센서 태그 그룹(120)으로부터 링크 요청을 받으면, 통신 충돌 여부에 따라 링크를 수락하거나 거부할 수 있다. The hub 110 performs wireless communication with the sensor tag group 120 to control the output of the sensor tag group 120. When the hub 110 receives a link request from the sensor tag group 120, the hub 110 links the link according to a communication collision. You can accept or reject it.
상기 센서 태그 그룹(120)은 상기 허브(110)와의 링크 과정을 거친 후, 허브(110)로부터 수신한 명령 데이터를 분석하여 동작한다. The sensor tag group 120 operates by analyzing command data received from the hub 110 after a link process with the hub 110.
상기 통신 제어 장치(130)는 상기 센서 태그 그룹(120)을 제어하기 위한 일종의 컴퓨터 또는 컨트롤 유닛으로서 센서 태그 그룹(120)을 제어하기 위한 명령 데이터를 상기 허브(110)로 전송한다. The communication control device 130 is a kind of computer or control unit for controlling the sensor tag group 120 and transmits command data for controlling the sensor tag group 120 to the hub 110.
참고적으로, 상기 허브(110)와 센서 태그 그룹(120)의 무선 통신 주파수 대역은 능동형이면서 긴 인식거리를 확보할 수 있도록 고주파수 대역인 424MHz 또는 433MHz인 것이 바람직하다. For reference, the wireless communication frequency band of the hub 110 and the sensor tag group 120 may be 424MHz or 433MHz, which is a high frequency band, to ensure a long recognition distance while being active.
본 발명에 따른 무선 센서 네트워크에서의 센서 태그 관제 방법은, 센서 태그 그룹을 이루는 어느 하나의 센서 태그가 다른 센서 태그와의 통신 충돌 방지를 위해 허브와의 링크 과정을 거친 후에 동작하게 되는데, 구체적으로는, 도 2에 도시한 바와 같이, 먼저 센서 태그가 처음 전원 ON되게 되면 센서 태그에서 허브로 링크를 요청하게 된다(S110,S120). 즉, 전원이 ON되게 되면 주위 허브와의 링크를 시도하는 것이다. In the sensor tag control method in the wireless sensor network according to the present invention, any one sensor tag constituting the sensor tag group is operated after a link process with a hub to prevent communication collision with another sensor tag. As shown in FIG. 2, first, when the sensor tag is first powered on, a link request is made from the sensor tag to the hub (S110 and S120). In other words, when the power is turned on, it tries to link with the surrounding hub.
그 다음에, 상기 허브는 다른 센서 태그와의 통신 충돌 여부를 판단한다(S130). Next, the hub determines whether there is a communication collision with another sensor tag (S130).
만약에, 다른 센서 태그와의 통신 충돌이 일어나지 않을 경우에는, 상기 허브는 상기 링크를 요청한 센서 태그로 응답 데이터를 전송하여 링크 요청을 수락한다(S140). 이에 따라, 상기 허브와 센서 태그 간에는 링크가 성공하여 완료된다. If the communication collision with another sensor tag does not occur, the hub transmits response data to the sensor tag requesting the link and accepts the link request (S140). As a result, the link between the hub and the sensor tag succeeds and is completed.
이때, 상기 응답 데이터에는 허브 ID, 동기를 위한 시간 정보 및 명령 정보 등이 포함될 수 있다. In this case, the response data may include a hub ID, time information for synchronization and command information.
이후, 상기 센서 태그는 응답 데이터의 허브 ID에 기초하여 다른 허브와의 통신을 수행할 수가 없을 뿐만 아니라 상기 허브로 응답 데이터의 시간 정보에 기초하여 동기화된 상태에서, 응답 데이터의 명령 정보에 포함된 측정 주기마다, 측정된 온습도 등의 센서 정보를 리셋되기 전까지 리얼타임 통신 즉, 실시간으로 전송한다(S150). Thereafter, the sensor tag is not only able to communicate with another hub based on the hub ID of the response data, but also included in the command information of the response data in a synchronized state to the hub based on the time information of the response data. Each measurement cycle, the sensor information such as measured temperature and humidity is transmitted in real time, that is, in real time until the sensor information is reset (S150).
그렇지만, 다른 센서 태그와의 통신 충돌이 일어날 경우에는, 상기 허브는 상기 링크를 요청한 센서 태그로 응답 데이터를 전송하지 않아 링크 요청을 거부한다(S160). However, when a communication collision with another sensor tag occurs, the hub does not transmit response data to the sensor tag requesting the link and rejects the link request (S160).
그리고, 상기 센서 태그는 상기 허브에서 링크 요청 거부 시 아이들 모드 상태인 전원 절감 모드로 전환한다(S170). The sensor tag switches to a power saving mode in an idle mode when the link request is rejected by the hub (S170).
이와 같이, 본 발명에 따른 무선 센서 네트워크에서의 센서 태그 관제 방법은, 센서 태그 그룹을 이루는 어느 하나의 센서 태그가 다른 센서 태그와의 통신 충돌 방지를 위해 상기 허브와의 링크 과정을 거친 후에 동작함으로써 센서 태그들 간의 통신 충돌이 발생되지 않아 신뢰성을 확보할 수가 있게 된다. As described above, in the sensor tag control method in the wireless sensor network according to the present invention, any one sensor tag constituting the sensor tag group operates after passing through a link process with the hub to prevent communication collision with another sensor tag. Communication collisions between sensor tags do not occur, thereby ensuring reliability.
한편, 본 발명에 따른 무선 센서 네트워크에서의 센서 태그 관제 방법을 한정된 실시예에 따라 설명하였지만, 본 발명의 범위는 특정 실시예에 한정되는 것은 아니며, 본 발명과 관련하여 통상의 지식을 가진자에게 자명한 범위내에서 여러 가지의 대안, 수정 및 변경하여 실시할 수 있다. On the other hand, the sensor tag control method in the wireless sensor network according to the present invention has been described according to a limited embodiment, the scope of the present invention is not limited to a specific embodiment, to those skilled in the art related to the present invention. Various alternatives, modifications, and changes can be made within the scope of the obvious.
따라서, 본 발명에 개시된 실시예 및 첨부된 도면들은 본 발명의 기술 사상을 한정하기 위한 것이 아니라 설명하기 위한 것이고, 이러한 실시예 및 첨부된 도면에 의하여 본 발명의 기술 사상의 범위가 한정되는 것은 아니다. 본 발명의 보호 범위는 아래의 청구범위에 의하여 해석되어야 하며, 그와 동등한 범위 내에 있는 모든 기술 사상은 본 발명의 권리범위에 포함되는 것으로 해석되어야 할 것이다.Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. . The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

Claims (4)

  1. 서로 간에 무선 통신을 수행하는 허브와, 복수개의 센서 태그로 이루어진 센서 태그 그룹을 포함하여 이루어지는 무선 센서 네트워크에서 센서 태그를 관제하는 방법으로서, A method for controlling sensor tags in a wireless sensor network including a hub for performing wireless communication with each other and a sensor tag group consisting of a plurality of sensor tags,
    상기 센서 태그 그룹을 이루는 어느 하나의 센서 태그는 다른 센서 태그와의 통신 충돌 방지를 위해 상기 허브와의 링크 과정을 거친 후에 동작하는 것을 특징으로 하는 무선 센서 네트워크에서의 센서 태그 관제 방법. Any one sensor tag constituting the sensor tag group operates after a link process with the hub to prevent communication collision with another sensor tag.
  2. 청구항 1에 있어서, The method according to claim 1,
    상기 링크 과정은, The link process,
    상기 어느 하나의 센서 태그는 상기 허브로 링크를 요청하는 단계와; Requesting a link from the sensor tag to the hub;
    상기 허브는 다른 센서 태그와의 통신 충돌이 일어나지 않으면 상기 링크를 요청한 센서 태그로 응답 데이터를 전송하여 링크 요청을 수락하고, 다른 센서 태그와의 통신 충돌이 일어나면 상기 링크를 요청한 센서 태그로 응답 데이터를 전송하지 않아 링크 요청을 거부하는 단계를 포함하여 이루어진 것을 특징으로 하는 무선 센서 네트워크에서의 센서 태그 관제 방법. If the communication collision with another sensor tag does not occur, the hub transmits response data to the sensor tag requesting the link and accepts the link request. When the communication collision with another sensor tag occurs, the hub sends the response data to the sensor tag requesting the link. The method of controlling a sensor tag in a wireless sensor network, comprising: rejecting a link request because it is not transmitted.
  3. 청구항 2에 있어서, The method according to claim 2,
    상기 센서 태그는 처음 전원 ON 시 상기 허브로 링크를 요청하고, 상기 허브에서 링크 요청 거부 시 아이들 모드 상태인 전원 절감 모드로 전환하는 것을 특징으로 하는 무선 센서 네트워크에서의 센서 태그 관제 방법. The sensor tag requests a link to the hub when the power is initially turned on, and switches to a power saving mode in an idle mode when the link request is rejected by the hub.
  4. 청구항 2에 있어서, The method according to claim 2,
    상기 응답 데이터는 동기를 위한 시간 정보 및 명령 정보를 포함하고, The response data includes time information and command information for synchronization,
    상기 센서 태그는 상기 허브로부터 응답 데이터를 수신하여 허브와의 링크가 성공하면 상기 허브로 시간 정보에 기초하여 동기화된 상태에서, 명령 정보에 포함된 측정 주기마다, 측정된 센서 정보를 전송하는 것을 특징으로 하는 무선 센서 네트워크에서의 센서 태그 관제 방법.The sensor tag receives response data from the hub, and if the link with the hub succeeds, transmits the measured sensor information for each measurement period included in the command information in the synchronized state based on the time information. Sensor tag control method in a wireless sensor network.
PCT/KR2012/005852 2012-07-04 2012-07-23 Method of controlling sensor tag in wireless sensor network WO2014007417A1 (en)

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