Title :
Integrated network of Profibus-DP and IEEE 802.11 wireless LAN with hard real-time requirement
Author :
Lee, Kyung Chang ; Lee, Suk
Author_Institution :
Sch of Mech. Eng., Pusan Nat. Univ., South Korea
Abstract :
This paper focuses on a method to connect mobile devices such as mobile robots and automated guided vehicles (AGV) to a fieldbus. In this paper, the IEEE 802.11 wireless LAN is used to extend a Profibus-DP network for the mobile devices. In order to integrate these two networks, a protocol converter is developed that consists of two processes-master process of Profibus-DP and virtual master process of IEEE 802.11-and a transmission buffer. Furthermore, a virtual polling algorithm is developed at the protocol converter in order to satisfy real-time requirements on data communication
Keywords :
IEEE standards; automatic guided vehicles; field buses; mobile robots; protocols; telecommunication standards; wireless LAN; IEEE 802.11 wireless LAN; Profibus-DP network; automated guided vehicles; computer network integration; data communication; fieldbus; master process; mobile devices connection; mobile robots; protocol converter; transmission buffer; virtual master process; virtual polling algorithm; Automatic control; Control systems; Data communication; Delay effects; Field buses; IEC standards; Manufacturing systems; Mobile robots; Protocols; Wireless LAN;
Conference_Titel :
Industrial Electronics, 2001. Proceedings. ISIE 2001. IEEE International Symposium on
Conference_Location :
Pusan
Print_ISBN :
0-7803-7090-2
DOI :
10.1109/ISIE.2001.931925
