The Design Of Control Circuit And Software Of The Digital Sand Table Module

Physical sand table, just as its name implies, is a real entity model. It is according to the topographic map, aerial photograph or field terrain, according to certain proportion relations, composting model with sediment, war game and other materials. And since the ancient times, the sand is used in military, education, tourism and many other fields widely. Sand has the stereoscopic effect, image intuitive, product simplely, economical and practical characteristics, etc. In the classification of the sand table, both is used in military, military sand table, also has the sand table simulation of terrain terrain, and also have building sand table in the buildings. Additionally, in combination with the modern multimedia technology, has a more intuitive image of modern sand table, we call it electronic sand table.The main topic is based on a combination of embedded systems on the basis of in-kind sandbox of ideas, by design, and computer programming for control circuits to construct physical sandbox and PC linkage combined control sandbox can think of showing the desired terrain or image, we call digital sandbox. Digital sandbox is through sound, light, electricity, image, 3D animation, and computer program-controlled technology, the use of digital projectors to achieve, digital sandbox, can fully reflect regional characteristics, to achieve a vivid, dynamic visual effects scene changes. For visitors is a new experience, and can produce a strong resonance, more intuitive than traditional sand table model, vividly.Based on digital sandbox mechanical devices, proposed and designed a set using the MCS-51 CPU for embedded control board, to achieve for the stepper motor drive, complete digital control module displays phalanx. The embedded control panel includes: means for stepper motor drive control module; multiple digital modules for RS-485 communication interface module; to protect the stepper motor travel range limit switch interface modules; full color LED display modules. Finally, to complete the embedded digital sandbox module control circuit schematic and PCB design, and has been implemented in the overall system integration project team.