| 摘要 |
The present invention relates to an active antitheft system comprising: a tag unit which has a unique identification (ID) and a fixing portion to be fixed to a product to be protected, and which generates a warning sound when the fixing portion is detached or disconnected (cut), or the tag unit enters a detection area in a warning mode; a receiving unit which provides a warning signal for enabling the tag unit to judge whether or not the area is a detection area when the tag unit enters the detection area, and outputs a warning signal upon receipt of information on the warning condition from the tag unit; a central receiving unit which receives warning signals from the tag unit and the receiving unit when the tag unit detects warning conditions in the detection area by the detachment of the fixing portion or by the signal from the receiving unit, and outputs a warning signal; and a warning lifting unit which lifts the warning mode of the tag unit. The thus-configured system of the present invention prevents theft in a more stable manner. |
