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中文摘要：
为了解决煤矿瓦斯监测网格型无线传感器网络无线节点在同一信道上工作时容易产生数据冲突,不利于监测的问题,提出了一种网络的无线节点接入机制。将无线传感器网络中的端设备节点先分组,再使用随机竞争与时隙分配相结合的方法来解决该问题。实验表明,利用分组无线节点中的时隙分配,并在同一时隙内采用CSMA/CA机制传输数据,不仅可以减少时隙数,降低数据传输时延,还可以减少数据传输冲突,节省能量,从而提高了无线监测网络的可靠性和稳定性。
英文摘要：
In order to overcome the problem of data collision often occurred when the nodes work at the same channel in the grid wireless sensor network for underground coal mine gas monitoring,a novel wireless nodes access mechanism is proposed in this paper.Firstly,the end devices in wireless sensor network are grouped.Then,the stochastic channel competition is combined with slots allocation.The experiments show that the slot allocation for the grouped nodes,and the transmission of data using CSMA/CA mechanism in the same slot can not only reduce the number of slots and lower data transmission delay,but also can reduce the data transmission collision and save energy.In this way,the reliability and stability of the wireless monitoring network can be improved.
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