Our team is developing a speed-limiting system that takes in visibility and surface friction of the road. We are using a camera to detect visibility but stuck on optimal sensing of the friction coefficient. We don't have the money to spend on devices that cost tens of thousands of dollars. What are some alternative, but accurate methods for getting the friction coefficient value?
Dear Dr. Brayden Noh,
I suggest you to have a look at the following papers:
-Road Friction Virtual Sensing: A Review of Estimation Techniques with Emphasis on Low Excitation Approaches
Manuel Acosta , Stratis Kanarachos and Mike Blundell
Appl. Sci., 7, 1230; doi:10.3390/app7121230 (2017)
Available at: www.mdpi.com/journal/applsci
-Vision based road surface detection for automotive systems
A. Raj, D. Krishna, R. Hari Priya, K. Shantanu and S. Niranjani Devi
2012 International Conference on Applied Electronics, Pilsen, pp. 223-228 (2012)
Available at: https://ieeexplore.ieee.org/abstract/document/6328908
-Angular Parameter for Characterizing Road Surface Microtexture
Minh-Tan Do, Hassan Zahouani, Roberto Vargiolu
Journal of the Transportation Research Board, Volume: 1723 issue: 1, page(s): 66-72 (2000)
Available at: https://journals.sagepub.com/doi/abs/10.3141/1723-09
Best regards, Pierluigi Traverso
If it is low-cost, then I would suggest thermography, i.e. a thermal camera. Then, I would try to model thermal inertia and different road friction states. Cheers.
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