Research on Key Technologies of Fire Alarm System Based on Mesh Wireless Ad Hoc Network

Abstract:
In the Fire Alarm System based on the Mesh wireless ad hoc network, when the data transmission path is blocked or the intermediate transmission node fails, the Mesh network can automatically search for the backup path, re-establish the wireless local area network (LAN), and complete the data transmission. However, in the process of rebuilding the LAN, there will still be a large number of data loss in the mesh network, which is unfavorable for the real-time broadcast of the Fire Alarm System. In this paper, the Shuffled Frog Leaping Algorithm (SFLA) used in wireless ad hoc networks is studied, and the step length in the iterative calculation is considered to be a key factor affecting the convergence speed of the algorithm, and it is proposed to adjust the fixed step size in the traditional algorithm to a dynamic step size, increase the forgetting factor, link the current step size with the previous step size, and give the calculation method of the forgetting factor. On this basis, the nodes in the Fire Alarm System are clustered by using Leach protocol, and an optimal path calculation method based on the improved SFLA is given. The experimental results show that under the same experimental conditions, when the transmission node in the system fails, the convergence speed of the wireless ad hoc network fire early warning system based on the improved SFLA is much faster than the traditional algorithm.