Thursday, December 20, 2018

Research Blog: Data Volume Challenges

It is important for Unmanned Autonomous Systems to find ways to decrease the amount of data that their sensors accumulate over time.  Many vehicles due to the limited space and power they possess, need to discard the data not longer used.
One data treatment method to consider by users and developers of sensors for Unmanned Autonomous Vehicles is the one suggested by Andrew Christopher Tebay. According to Mr. Tebay, “The data transfer system can include a first sensor associated with the unmanned vehicle for collecting a first data set, and a second sensor associated with the unmanned vehicle and for collecting a second data set, wherein the second data set is associated with the first data set by a predetermined association.” Tebay also suggest to use a transceiver that will transmit data from the unmanned vehicle to a remote data storage system (Tebay, 2011). Another important element to consider will be a mass data storage computer located on the unmanned vehicle.  This mass data storage computer will be able to store the first and second data sets based on the predetermined association (Tebay, 2011).  This same computer will also have the job to execute the requests from the remote data storage system and transmit the first data set from the unmanned vehicle to the remote data storage system (Tebay, 2011). Other important functions will include the transfer of selected ones of the second data set from the unmanned vehicle to the remote data storage system (Tebay,2011).
The following pictures are diagrams of the suggested method. 



A second data treatment method to consider could be one suggested by Tiffiny Rossi on her article, Commercial drones bring valuable data but where is it stored? Imagine your sensor data storage unit like the sim card in your phone. You always have the option to delete the data that you do not need any longer or you could simply buy a sim card with more space. Apply this idea to the sensor data storage unit of any Unmanned Autonomous Systems. According to the general manager and vise-president of Lexar, Wes Brewer, “8K resolution video, multiple sensor data, and 360-degree video capture will drive the need for greater performance and capacity in removable storage. SD cards have several advantages over embedded drone storage, including scalable capacity, higher-quality image storage, and lower-power data transfer.”
Tuxera, a company that creates quality-assured software for world-leading companies across the world to help store data, has focus their attention now on how to help the developers and operators of sensors used by Unmanned Autonomous Vehicles. Tuxera offers a software that according to Miss Rossi, “gives some added benefits alongside those brought on by SD cards including fail-safe data integrity in the event of power loss or crash, no longer SD card lifetime, fast data transfer speeds, and low write latency when saving data to the SD card."
The more commercial drones are used for commercial applications, the more will be required to count with drones equipped with a storage unit capable of handling so much data. The method proposed by Mr. Tebay as well as the software offered by Tuxera, suggest good solutions to the problem of the amount of data that sensors accumulate over time.

References
Stockton, S. G., & Tebay, A. C. (2016, March 8). United States Patent No. US 9282144B2.
Retrieved from https://patents.google.com/patent/US9282144B2/en
Rossi, Tiffiny. (2016). Commercial drones bring valuable data – but where is it stored? https://www.tuxera.com/blog/commercial-drones-bring-valuable-data-but-where-is-it-stored/