VANDALISM DETECTION DEVICE AND VANDALISM DETECTION METHOD

摘要

This vandalism detection device is provided with a temperature measurement unit that measures the temperature of a window pane, a vibration measurement unit that measures the vibration quantity of the window pane, and a control unit. If a temperature variation quantity per unit of time, which is determined from the temperature measured by the temperature measurement unit, does not exceed a predefined temperature variation threshold value (Tr) (S103: NO), the control unit detects the breaking of glass according to whether the vibration quantity measured by the vibration measurement unit exceeds a predefined first vibration threshold value (Fr1) (S104, S105). Furthermore, if the temperature variation quantity per unit of time, which is determined from the temperature measured by the temperature measurement unit, exceeds the predefined temperature variation threshold value (Tr) (S103: YES), the control unit detects the breaking of glass according to whether the vibration quantity measured by the vibration quantity measurement unit exceeds a predefined second vibration threshold value (Fr2), which is smaller than the first vibration threshold value (Fr1) (S106, S107).