The time relationship in registration of data from electrical power system

Abstract

The paper presents the time relations between processes and operations carried out during the registration of data from the electrical power system, stored in pendrive portable memory. The authors present and analyze the successive stages of registration of data containing information on the signals in the power system, starting from their conversion into digital form, by gathering in memory of the DSP and sending them by using LVDS protocol to the FPGA, where they are cached in 4 B frames and then sent via SPI interface to the memory of GPP processor operating under the Linux system. In the next step, using the tools and drivers available in this environment, data is stored on the USB. This operation is critical in saving the data stream from the power system, affecting the speed limit of data recording. The limitations of this operation are caused mainly due to the properties of the Linux system.