{'fraction_non_alphanumeric': 0.01564129301355579, 'fraction_numerical': 0.0, 'mean_word_length': 5.315789473684211, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Reliability Analysis of Different Fault-Tolerant Mechanisms in Wireless Sensor Networks

Wireless sensor network is an important part of Internet of things, which is mainly used to detect and collect all kinds of environmental parameters. In wireless sensor networks, sensor nodes are an important link in data acquisition and data transmission. Because they are often deployed in harsh environments, sensor nodes are prone to failure. The fault-tolerant mechanism can maintain the whole sensor function continuously in the case of sensor node failure. In this paper, different fault-tolerant models are proposed, and the reliability of sensor nodes under different backup methods and backup strategies is analyzed and compared. The results show that the cold backup system has higher reliability than the hot backup redundant system, and the heterogeneous alternative scheme is superior to the homogeneous scheme from the point of view of system reliability.