Background: Bedload can slide, roll or jump over a rough bed. To obtain the details of bedload sediment entrainment in a flume experimentally, PIV are widely adopted. However, PIV technique suffers from particle overlap shortcomings. If there is a smart ball reporting real-time position actively, we can obtain the trajectory of each sediment particle easily.
Requirement: small balls with sensor inside, which can flow with water and report to computer real-time position (x, y, z coordinates) actively. The diameter should be less than 3 cm and price of each ball had better be lower than 10$.
Dear Dong,
RFID (Radio-frequency identification ) seams a good solution for your purpose. It uses electromagnetic fields to automatically identify and track tags attached to objects, In order to give you an example of the size off RFID chips, small ones can well-nigh have the size of a grain of rice, it can be incorporated in any product for identification/localization purposes.
I hope that this helps, feel free to contact me if needed.
Best;
Many thanks, Mehdi. It seems that RFID would be the right way to serve this purpose. Do you know about the complexiblity of this techique? I have no background in this field, just want to use this in our research on sediment transport. I have no idea on the availibility of this technique. Do you have any suggestions?
Dear Dong,
For the complexity, i would say that from 0 to 10 i will put it at 6. The main idea is to develop a program on one machine (server) that will track every RFID tag, Java language would be a good proposition. Here is an introduction to the Sun Java System RFID Software https://docs.oracle.com/cd/E19486-01/819-4684/RFID-intro.html . It can be a good start point.
Best,
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