The Tykes slipped to fourth-from-bottom in the table on Monday, level on points with Nottingham Forest, the team immediately below them, after failing to win any of their last five matches and Davey's side face another scramble to retain their Championship status.
Davey said: "The fact we've been here before will definitely help us. It's not as if this is the first time we've found ourselves in this position.
"This has happened for three seasons on the bounce now and last year we were in a worse situation as we were in the bottom three after losing our FA Cup semi-final.
"But I'm confident we'll stay up because we can call on that experience. We also have a much better squad than last year."