A photo-bioreactor is a bioreactor that incorporates some types of light source to provide photonic energy input into the reactor[1][2]. In the situation of Large-scale industrialization production of micro-algae, hundreds of photo-bioreactors will be deployed in a factory, thus the design of entire system is based on the distribution theory and the remote monitoring must be deployed. So the communication in the entire photo-bioreactors system is very important. However, the recent solution of communication is based on RS-485 data bus, and the twisted-pair cable is used as the communication medium, so the flexibility and scalability of entire system reduce. In this paper, the wireless sensor network (WSN) based on ZigBee technology is applied to this photo-bioreactors system, and the related key problems include the architecture of entire system and the design of wireless sensor network nodes[3]~[6]. The application of this technology will also reduce the cost and effectively raise the intelligence level of the large-scale industrialization photo-bioreactors system.
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