The Data Acquisition System Design Based On Linux

With the development of large-scale, high efficiency, high reliability of Data Acquisition System, many new management concepts such as empty, management, control integration and remote fault terminal are put forward. Traditional control systems have been unable to adapt to these new management concepts and tools. Therefore, the automatic control system should have much higher performance, such as digital, integrated, network-based, standardized and intelligent performance. Such as in the oil system, power systems, traffic management, logistics management, banking POS machine, environmental protection, hydrology, meteorology, urban heating and the monitoring communication base station all required collecting relevant data form specific application terminal, and transmitting the data to the processing center through network. Data acquisition and control system just to meet the needs of this area.Embedded systems can meet the requirements of complex control system. Embedded systems, not only have high performance of reliability and real-time in communications and data storage but also have more flexible system structure and become more facilitation in development environment.This system is achieved, based on Linux operating system and SQLite3date base, depends on Qt4platform, using C and C++programming language.In order to solve real-time problems, the real-time kernel patch of RT-Linux is added to the Linux kernel. On this basis, core is cut and compiled so as to design basic driver device. Through transplanting, embedded controller is ultimately formed, on which based hardware platform of marine power plant control system is established. Application in the control of marine power plant achieves real-time acquisition.