Design Of Data Recording Device

The subject comes from a vehicle test measurement system for collecting, recordingaircraft various parameters during the test signals, and recovery and analysis data at the end ofthe experiment, the researchers designed a combination of Gigabit Ethernet transmissiontechnology and storage technology the telemetry data recording device, the focus from aGigabit Ethernet communication link and reliable data storage both in-depth study.For this project research and technical indicators, combined with current research andfully consider the actual application requirements, design a practical implementation.Telemetry data logger controlled by telemetry acquisition module, image acquisition moduleand power module of three parts, telemetry control acquisition module RS-422, RS-485signalacquisition, the maximum sampling rate of5Mbps, image acquisition module for CameraLink interface data acquisition, The average sampling rate of100Mbps, each collectionmodule are zero error rate for reliable data storage and recovery using Gigabit Ethernetinterface independent data, in practical application, the average transfer up to30MB/s.This paper focuses on the content of the research from the hardware circuit design andlogic design detail and analysis. Gigabit Ethernet links from88E1111achieve major hardwarecircuit design, TCP/IP communication model, Ethernet data encapsulation, IP headerchecksum and CRC check of realization analysis and presentation, data storage technologyaimed at ECC and parity implementation process is applied to NAND FLASH complete datawere written and read in detail.The final text of the telemetry data logger test methods and test procedures in a testenvironment are described under the ground, introduced equipment for a variety of anomaliesencountered in the commissioning process, a detailed analysis of the causes and eventuallypropose effective solutions program, through extensive testing and environmental testing toverify telemetry data logger to meet technical requirements, stable and reliable.