Skip to main content

Table 4 Comparison of the number of alarms for the abnormal lock opening

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

Input signal Number of alarm
The existing method The proposed method
Signal 1, Sa = 0, Sl = 0 0 0
Signal 2, Sa = 0, the duration lasts 1 s with Sl = 1 1 0
Signal 3, Sa = 0, the duration lasts 2 s with Sl = 1 1 0
Signal 4, Sa = 0, the duration lasts 3 s with Sl = 1 1 1
Signal 5, Sa = 0, Sl = 1 1 1