30-01-2013, 10:44 AM
MULTI-ROBOTS COMMUNICATION SYSTEM BASED ON ZIGBEE NETWORK
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ABSTRACT:
For solving the problem of the cooperation between Multi-robots, a communication system based on the ZigBee network was designed. In the hardware of the robots, theZigBee nodes are introduced. The multi-robots form a star network by the ZigBee nodes, and they keep communication with each other by the central node. The ZigBee network has many characteristics such as low cost, low power-consume , strong anti-jamming ability and real-time performance etc, it adapts to the application of intelligence. Experiments showed that: the communication between the robots is reliable. This scheme is a good way for robots to complete complex task and improve working efficiency.
INTRODUCTION:
Robot is one of the most important creations in the 20th century. The technology of robot develops rapidly during 40 years. With the development of social production technology, the application fields of robot extend to broadly, robot is applied in automation line, ocean resource exploration, space working etc. However, presently the single robot’s capacity is limited in many
aspects, such as information acquisition, processing and controlling, especially for the complex task and the changeable environment, single robot’s capacity is more deficiency. The group of multi-robots can cooperate with each other and deal with difficult task that single robot couldn’t complete, this is the trend of the development of robot. Now multi-robots communicate by wire, although it has mature technology and high reliability, the wire restricts the move scope and the flexibility of the robots, so this wire communication of multi-robots was few applied. ZigBee network technology is a wireless communication protocol based on the IEEE standard 802.15.4, it has low cost, low power-consume and low transmit-speed feature, and it also supports star, tree and mesh network topology structure. Multi-robots just transmit a small quantity of information at intervals. This can save much energy for robots. ZigBee protocol is very fit for this situation.