| Citation: | DUAN Ruifeng, LYU Yanjie, DU Wenji, et al. Multi-channel wireless sensor system based on CC1310 chip wtih high speed and low power consumption[J]. Journal of Beijing University of Aeronautics and Astronautics, 2022, 48(11): 2177-2185. doi: 10.13700/j.bh.1001-5965.2021.0682(in Chinese)
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In order to effectively reduce the weight of sensor data acquisition and transmission system for the new-generation launch vehicle, a wireless sensor system based on chip CC1310 was designed and implemented. Multi-node networking and group management are accomplished using frequency division multiplexing (FDM) and time division multiplexing (TDM). The FDM scheme among groups not only increases the number of nodes, but also improves the transmission rate multiplexing multiple. When there are four groups, the system is capable of supporting more than 100 sub-nodes. In order to ensure high precision synchronization of multi-nodes, avoid node collisions, and obtain the optimal intra-group achievable rate, we also suggested an optimal method of master node timing in combination with a multi-node time-sharing transfer protocol. Moreover, a node wake-up/idle mode switching strategy is designed to reduce system power consumption effectively. The experimental results show that the transmission rate can reach 400 Kbps when two master nodes work in parallel with five sub-nodes, and the transmission rate will increase proportionally when the number of master nodes rises. The power consumption of the single sub-node is less than 60 mW during work hours and less than 12 mW during idle hours. The average power consumption of the single sub-node is 15.2 mW, which meets the requirements of low power consumption. At the same time, the wireless sensor system designed in this paper has good reliability and robustness.
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