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Institute of Korean Electrical and Electronics Engineers (한국전기전자학회)
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IEEE 802.15.4 Ad-Hoc Wireless Sensor Network Routing Method Applying EtherCAT Communication Method

EtherCAT 통신방식을 응용한 IEEE 802.15.4 Ad-Hoc 무선 센서 네트워크 라우팅 방식

  • Park, Jeong-Hyeon (Dept. of Electronic & Telecommunication Engineering, Inje University) ;
  • Seo, Chang-Jun (Dept. of Electronic & Telecommunication Engineering, Inje University)
  • Received : 2018.06.11
  • Accepted : 2018.06.28
  • Published : 2018.06.30
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Abstract

IIoT, the IoT technology applied to the industrial field, is being used as a monitoring technology for increasing in production rate and safety of workers. However, monitoring through the construction of IIoT network using Ethernet and RS485 in production lines where dozens to hundreds of machine tools are manufacturing components, have difficulties of infrastructure cost and network flexibility and fluidity. Therefore, in this paper, using IEEE 802.15.4 standard WSN device to construct a Ad-Hoc WSN in the production line. In addition, the transmission period and order of the sensor nodes are set by applying the EtherCAT communication method in which the payload frames are shared by all the sensor nodes. From this, we have overcome the problem of reliability decline and real-time issue due to the packet collision of wireless network and confirmed that it is a wireless network routing method that can be used in the actual industrial field.

IoT 기술을 산업현장에 적용시킨 IIoT는 생산율 향상 및 작업자의 안전을 위한 모니터링의 기술로 이용되고 있다. 하지만 수십에서 수백 대의 공작기계가 부품을 가공하고 있는 생산라인에 Ethernet과 RS485 등을 유선 네트워크를 이용한 IIoT 네트워크의 구축을 통한 모니터링은 기반비용 및 네트워크의 유연성 및 유동성의 문제를 가진다. 이로 인해 유선 네트워크에서 무선 네트워크로의 변화가 필요한 실정이다. 따라서 본 논문에서는 IEEE 802.15.4 표준 무선네트워크 디바이스를 이용하여 생산라인에 Ad-Hoc WSN를 구축한다. 또한 추가적으로 Payload Frame을 모든 센서노드가 공유하는 특징을 가지는 EtherCAT 통신방식을 이용하여 센서노드의 전송주기 및 순서를 설정하였다. 이를 통해 무선 센서 네트워크의 패킷충돌로 인한 신뢰성 저하와 실시간성 문제를 해결했으며 실제 산업현장에 사용할 수 있는 무선 네트워크 라우팅 방식을 확인하였다.

Keywords

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