Design Of High-speed Remote Measurement System Based On LVDS

The parameter signals of system environment usually need to be collected and transmitted; data-processed and analyzed in the course of space research and production in order to provide important references for subsequent scientific research. Also, the demand for information content of parameter gathering has increased largely with the development of science and technology. There are some characteristics of demonding real-time, high-speed, romote transmitting data in some measurement systems used for aerospace experiment. In the paper, the High-speed Remote measurement system based on LVDS is designed, and its main parts and control flow are discussed, and the key technology (such as electromagnetic interface, impedance matching and signal enhancement) of LVDS in the application of the remote measurement system is anylized. There are five chapters in this paper, which can be divided into three sections:1) According to the working environment and functions needed to be done of the system, a design proposal of network topology structure based on the LVDS serial transmission is provided on the basis of analyzing the structure of often used measurement systems and the characteristics of LVDS serial transmission. The structure has improved the design flexibility and universality of each functional module of the system, and has simplified transmission lines within the measurement system so that the speed of data transmission can be increased.2) On the basis of analyzing various technical indicators of the measurement system, the system is designed with modular technology. The application of LVDS in the system is discussed, and the design proposal of high-speed remote measurement system based on LVDS serial transmission is presented and the key technology and logic control method of each functional module are discussed in the paper. 3) In the paper, the implementation of data communication based on LVDS topological structure has been carefully discussed, the layering design of measurement system structure has been completed, and the tasks needed to be done by each layer in the system structure has been anylized and the implementation method has been introduced.