SECURITY DEVICE AND SECURITY SYSTEM

PROBLEM TO BE SOLVED: To provide a security device and the like that can reduce wrong detection.SOLUTION: A security device comprises: a sound recording unit 12 that records a sound of an object space; a storage unit 14 that stores a plurality of false impact sound signals serving as a signal similar to an amount of characteristic of an impact sound signal, but not the impact sound signal; a determination unit 13 that when an amount of characteristic of a recorded sound signal of the recording unit 12 is similar to the amount of characteristic of the impact sound signal, and does not almost agree with an amount of characteristic of any of the plurality of false impact sound signals stored in the storage unit 14, determines the recorded sound signal to be the impact sound signal; an alarm generator 15 that, when the recorded sound signal is determined to be the impact sound signal, generates an alarm; an acquisition unit 17 that acquires a human detection result based on an image of an external space of the object space taken by an imaging unit 11 from a server; and a learning unit 16 that, when the human detection result is indicative of non-existence of a human in an image of an external space, causes the generation of the alarm by the alarm generator 15 to be suspended, and newly stores the recorded sound signal in the storage unit 14 as the false impact sound signal.SELECTED DRAWING: Figure 1 【課題】誤検知を減らすことのできるセキュリティ装置等を提供することを目的とする。【解決手段】対象空間の音を録音する録音部１２と、衝撃音信号の特徴量と類似するが衝撃音信号ではない信号である偽衝撃音信号を複数記憶する記憶部１４と、録音部１２の録音信号の特徴量が衝撃音信号の特徴量と類似し、かつ、記憶部１４に記憶された複数の偽衝撃音信号のいずれの特徴量とも略一致しない場合に、当該録音信号が衝撃音信号であると判定する判定部１３と、当該録音信号が衝撃音信号であると判定された場合、警報を発生する警報発生器１５と、サーバから、撮影部１１が撮影した対象空間の外空間の画像に基づく人検知結果を取得する取得部１７と、人検知結果が外空間の画像内に人が存在しないことを示す場合、警報発生器１５が前記警報を発生しているのを停止させ、当該録音信号を偽衝撃音信号として記憶部１４に新たに記憶する学習部１６とを備える。【選択図】図１