A Novel Fault Diagnosis Strategy for Heterogeneous Wireless Sensor Networks

Table 1

Common faults and causes of sensor components.

Fault type	Cause of failure
Impact fault	Random interference in power supply and ground wire, electric spark discharge
Short circuit fault	Corrosion of bridges and short circuit connections caused by pollution
Bias fault	Bias current or bias voltage, etc.
Offset fault	The battery voltage cannot reach the minimum operating voltage of the node
Periodic interference fault	Power supply 50 Hz interference, etc.
Nonlinear dead time fault	The amplifier is saturated, contains nonlinear links, etc.
Open circuit fault	The signal line is broken, the chip pin is not connected, etc.
Drift fault	Temperature drift, etc.