In the paper, OV5640 camera and wireless sensor networks were combined to build a monitoring network with wireless communication capabilities, and put the network applied to the granary, to make the grain pest monitoring. This network has nodes embedded into a predetermined position of bulk grain and attracts stored-grain pests to enter the shooting area by built-in LED light in nodes and trapping agent. And then the camera shoots pests according to the instruction of control center and transfers pictures to the network control center, by applying the wireless transmission module integrated in...