Algorithm 1:${\mathcal{A}}_1$ Determine the fan current status

Require: Set ${\theta }_I=v$, ${\varphi }_{tol}=\epsilon$   if $V>{\theta }_I$ then     It is judged that the current is in the starting state. Set a flag ${\mathsf{\Psi }}_{{\mathcal{A}}_1}=1$     Continuously monitor for a period of time ${\mathsf{\Gamma }}_t=K$ minutes.     if $\mathcal{C}<110-{\varphi }_{tol}\mathrm{or}\mathcal{C}>110+{\varphi }_{tol}$ then         Send a warning message, set ${\mathsf{\Psi }}_{{\mathcal{A}}_1}=0$ and continuously monitor the current.     end if   end if