PROBLEM TO BE SOLVED: To provide an automatic water supplying system which manages a water-supplying target such as soil after the finish of water supplying, keeps or adjusts the amount of water of the target at an adequate level and enables the excellent growth of plants, and at the same time which prevents the wasting of water.SOLUTION: The automatic water supplying system comprises at least a water sensor with which the deficiency of water in a water-supplying target can be detected, a water-supplying means, and a controlling means for controlling the start and the finish of the operation of the water-supplying means with a timer. The controlling means measures a specific period of time by the timer after the finish of the operation of the water supplying means, and when the shortage of water in the water-supplying target is detected by the water sensor in the specific period of time, the operation of the water-supplying means is started.COPYRIGHT: (C)2003,JPO【課題】 給水終了後に土壌等の給水対象を管理して給水対象の水分量を適量に維持或いは調整し、植物の良好な育成を可能にすると共に、水分を無駄使いすることが無い自動給水システムを提供する。【解決手段】 少なくとも、給水対象の水分不足を検出可能とする水分センサーと、給水手段と、タイマー部を有し給水手段の給水の開始及び終了を制御する制御手段とを備え、前記制御手段は、給水手段の給水終了後にタイマー部で所定時間を計測し、前記所定時間内に水分センサーにより給水対象の水分不足を検出した場合に給水手段による給水を開始する自動給水システム。
