| 摘要 |
A security device is provided to prevent lifeguards from being unnecessarily dispatched due to a noise input such as a motion of insect or malfunction by installing a noise filter unit. A housing(10) is installed in an indoor place. A human body sensor(20) is installed within the housing and senses a human body approaching the indoor space. A camera fixture(30) is fixedly installed on the housing. A camera(40) is rotatably mounted on the camera fixture and captures an image of the indoor space. When an approach of a human body is sensed by the human body sensor, a controller calculates a current location of the human body and calculates a changing direction of the camera. A camera driving unit changes the angle of the camera according to the calculated camera changing direction.
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