In order to improve the efficiency and convenience, the Y axis precision control components can be installed two cameras, motion can be collected simultaneously on both sides of the elevated image, such as the simultaneous acquisition of 1, No. 2 shelves. In the actual movement, Y axis precision parts to control the camera down from a tray, a tray of image acquisition, arrives at the Y shaft end, along the X axis displacement stacker traverse a tray, Y axis precision components to control the camera back to the starting point from the Y axis endpoint, image and collecting a each tray, this trajectory, complete an aisle two elevated inventory work. The motion trajectory as the left view.

Three structure
The camera is fixed on the stacking machine, shot from a distance of one side is 1 meters, and 0.65 meters, the CCD can be used 2/3 inches, the lens can be 6.8mm. Photograph by external trigger, trigger photo into the stacker position signal, each tray photographed two times, each time the imaging area of about 1 m x 1.2 meters, which can meet the demand of field imaging.

The camera can be used AVT GigE gigabit network camera, the camera has the advantages of fast speed, easy wiring, installation is convenient wait for a characteristic, cable and a power line, trigger line needs to use folding protective device along the Y axle connecting rod wiring, 220V power directly from the stacking machine to get.

The software implementation, consider some implementation module: 1 online detection, provide online monitoring function. 2, the off-line debugging, debugging and modifying algorithm. 3, the algorithm add interface. 4, the user login interface.
The algorithm should identify missing box, brand function, algorithm uses the histogram, color detection, color contrast. Software function, can save the image, save the log log inventory, including the total number of brand cigarette box, box position.

The overall structure of elevated database diagram as follows: