Data Storage Technology Of Node In Wireless Distributed Test System

Float-type water-based explosive distributed test system consist of the control station on the ground or ship and floating-type test base stations,they together constitute a distributed test system, communicating through wireless.Multiple sensors in the test station apperceive many signal,such as explosive shock wave,acoustic positioning,environment and system parameters, etc., with various of large mount data. Test data is difficult to return back in a short time using wireless communication mode after the test, so storage and management the data is necessary.Therefore building data storage management module,design-specific file system to management data based on high-capacity non-volatile NAND FLASH memory,deign pecific file system to store, manage test data. Design bus interface circuit for each functional module.Designed shock wave feature extraction of storage management technology to return back test data efficiently.According to the project need, a multi-channel low-speed acquisition system was designed for acoustic positioning beacons,environment and system parameters,such as low-frequency signal acquisition.Tests show that file system based on NAND FLASH can storage, management test data effectively and reliablly,provide a guarantee for later data analysis,high-capacity storage ensure repeatable test;Interface circuit between modules facilitate management and transmission of test data.based feature extraction for efficient data return, easing pressure on the wireless transmission; multi-channel acquisition system complete the underwater locator beacons and other low-frequency signal acquisition.