The Development Of Road Setting Out System Based On Embedded Technology

With the increment of the demand for high-level roadway and the speedup of the step for civil engineer construction, the traditional work methods can't competent for the requirement.This paper will study how to design and develop a road setting out system, which can improve the efficiency of the road setting out, enhance the quality of the fieldwork and is accorded with Chinese criterions, answered for Chinese habit and based on the embedded devices. Consequently, sufficed the demand of civil engineer at the present time.Firstly, the paper analyzed the significance of this investigation that developed the Road Setting Out System for Chinese based on embedded devices, such as PPC, total station. Then the ABC of embedded system and the contents, follows of road setting out are introduced simply. Some important mathematics models about road setting out are analyzed and deduced from the most universal conditions. It is proved that the results of these models are exact and reliable. It gives emphasis to talk about how to develop database or file software in base of PPC and how to realize mUltithreading serial communication. Then designed and developed the Road Setting Out System based on PPC. Studied the foundation software architecture of Leica total station. And given emphasis to study the MMI Framework (the software development platform of Leica low-end and middling total station), the data compress storage and the communication between TPS and PC. Then designed and developed the Road Stake Out Application based on Leica total station. Designed and developed the post-processing and preprocessing application of the Road Setting Out System based on PC for remedy some shortages of embedded device.The demo versions of the Road Setting Out System had been released and the number of those users has arrived several thousands. And the importance of this scientific research is proved faultlessly.