Researches On PDA Application In Data Processing Of Subgrade Construction

Along with the sustainable development strategy of China's modernization construction in the full implementation of China's highway construction and the sustained,rapid development.The quality of Subgrade construction has been an important factor of traffic safety and High.speed operation.Therefore,the equipment of rapidly,efficient,accurately detecting the quality of Subgrade construction has been required.Personal Digital Assistant,PDA,is a new smart electronics product,ideal vehicle for data collection.Since the 20th century,90's PDA came out,the PDA system has advantages and Features which other systems unmatched,portable,efficient,convenient, faster calculate the Site collection data.Such as PDA is becoming increasingly common. We can use computers when we are moving to deal with our office work.Subgrade construction detection data processing system based on PDA is one of the most advanced detect methods,this system can implement the data preparation,data collection,data accounting,data procession and results of the output.In this paper,the contents of research includes the following aspects:analyzed and compared several prevalent Embedded operating systems,and pointed out the applicable domains;More comprehensively studied of the Subgrade construction detection methods,by composite analyzing the quotas which are the degree of compaction,water content,density,and compare to original Subgrade detection methods,we can conclude that all methods have the problems,low data.processing capacity,high cost,inefficient and so on,it will be the preparation for system exploitation.With serial communication technology, Bluetooth technology,infrared technology,realized the communication of PDA and various detection devices;In order to adapt the requirements of information sharing, based on moving Internet technology,realized system wireless network transmission frame based on WAP technology,realized the data site collection and wireless transmission of constructions;System used the Embedded operating systems,opted Embedded Visual C++ 3.0 of Microsoft Embedded Visual Tools to be the development tools,opted SQL Server CE 2000 database,According to various Subgrade detection indicators of the((Highway Engineering Quality Assessment Standard)),we designed system,established modules,exploited functions;in.depth study the key technology—database technology;effective saluted the traditional problems that PDA data format single and small amount of data storage,The exploitation of Subgrade construction detection data processing system based on PDA,propose a new method of construction detection work in future,laid a solid foundation for implementing the data processing integration on construction detection work.