US 12,411,082 B2
Methods and systems for sensing a road surface
Kannan Srinivasan, Columbus, OH (US); and Wei Sun, Columbus, OH (US)
Assigned to Ohio State Innovation Foundation, Columbus, OH (US)
Filed by Ohio State Innovation Foundation, Columbus, OH (US)
Filed on Jun. 12, 2023, as Appl. No. 18/208,494.
Claims priority of provisional application 63/370,944, filed on Aug. 10, 2022.
Prior Publication US 2024/0053266 A1, Feb. 15, 2024
Int. Cl. G01N 21/47 (2006.01); G01N 23/04 (2018.01)
CPC G01N 21/47 (2013.01) [G01N 23/04 (2013.01); G01N 2021/4709 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for remote sensing of a road surface comprising:
transmitting, by a transmitting antenna, a radiofrequency signal toward a road surface;
receiving, by a first radiofrequency identification (RFID) tag, a first backscattered radiofrequency signal from the road surface;
receiving, by a receiving antenna, an RFID signal from the first RFID tag, the RFID signal comprising phase and magnitude information;
wherein the method further comprises receiving, using a second RFID tag, a second backscattered radiofrequency signal;
analyzing, by an RFID reader, the phase and magnitude information to determine a condition of the road surface, wherein the condition of the road surface comprises a three-dimensional shape of the road surface; and
determining the three-dimensional shape of the road surface using the RFID tag and the second RFID tag.