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Table 5 Test results of violent opening event

From: Alarm method of communication intelligent manhole cover based on multiple event fusion

Input signal Alarm event of violent opening generated No alarm event of violent opening generated
Lock abnormal opening event generated No lock abnormal opening event generated Lock abnormal opening event generated No lock abnormal opening event generated
The proposed method
Signal 1 F F F F
Signal 2 F F F F
Signal 3 F F F F
Signal 4 T T T F
Signal 5 T T T F
The existing method
Signal 1 T T T T
Signal 2 T T T T
Signal 3 T T T T
Signal 4 T T T T
Signal 5 T T T T