A model of wireless network data interchange was built to solve cross-platform exchange data in intelligent robot. In the framework of embedded Soft-PLC - Codesys real-time operating system, we apply Socket network programming technology based on TCP/IP communication protocol to set up a physical channel between VC++ platform and the Codesys platform. It realizes the real-time data exchange between host-computer and slave-computer uploaded embedded operation system of robot. A special multi-threaded processing class was developed to enhance the multi-tasking allocation ability of the system. Exchanged data was packaged and analyzed to ensure the accuracy of transmitted data. The experiment shows built communication system platform is justifiable, and data transmission speed is less than 10ms. It is able to meet the needs of real-time control in intelligent robot.
The accuracy of calibration is a critical link which affects the accuracy of the machine vision system. Several factors affecting the accuracy of the binocular vision calibration were analyzed. To construct a reprojection error was as a cost function. Deference controllable factors were set to getting intrinsic parameters. And then reprojection error was depicted utilizing a variety of graphical form, such as 2D coordinate drawings, line charts and cross-hatched map. The correlation between parameters which were paid attention in calibration process was analyzed clearly and directly. The selection of optional parameters is described based visualization. The selection basis of optional parameters was offered by experiments.
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