| 摘要 |
An active protection system for protecting an object includes a first lens, a second lens, a processing unit and an alarm unit. The first lens is configured to receive first light and generate a first image. The second lens is configured to receive second light and generate a second image. The processing unit is configured to obtain a characteristic value of the object from the second image, determine whether the characteristic value reaches a pre-set value, and judge whether the object is regulated in a predetermined period after the characteristic value reaches the pre-set value. The alarm unit is configured to raise an alarm under control of the processing unit if the object is not regulated in the predetermined period after the characteristic value reaches the pre-set value. |
