Smart motion detection device and related determining method

A smart motion detection device capable of receiving an alarm signal to monitor motion of an object, the smart motion detection device comprising:

• a sensor array adapted to capture images, the sensor array comprising a comparator adapted to compare at least one of the captured images with a reference image and to generate the alarm signal when intensity variation between the at least one captured image and the reference image is greater than a predefined value;
• a memory directly coupled to the sensor array and adapted to pre-store the captured images;
• and
• a processor coupled to the sensor array and adapted to process the captured images that are pre-stored at the memory after the processor is awaked from receiving the alarm signal.

A determining method applied to a smart motion detection device having a memory, a sensor array, and a processor coupled to the memory and the sensor array, the determining method comprising:

• the sensor array capturing an image and pre-storing the image into the memory when receiving an alarm signal;
• and
• the processor being enabled by the alarm signal so as to process another image that is captured by the sensor array after receiving the alarm signal and then read the image that is pre-stored at the memory after the processor is awaked from receiving the alarm signal;
• wherein the image is pre-stored into the memory by receiving the alarm signal before the processor is enabled, and the pre-stored image is analyzed after the another image captured in real-time are analyzed.