It works by using light beams and photo detectors to analyze the vehicle’s environment
Researchers from the Carlos III University of Madrid (UC3M) have patented a sensor and method to detect road conditions while a vehicle is in motion.
This sensor is used to warn of the presence of water, ice, snow and other obstacles on the road, in addition to using this data to calculate the lack of adhesion of the surface. The purpose of this device is to increase driving safety and prevent accidents once it is integrated into motor vehicles.
Until now, other techniques and models already existed for detecting the condition of the asphalt; The novelty of this innovation is that recognition can be performed in real time. “Other systems that use more than one transmitter of different wavelengths cannot be used to measure road conditions with a moving vehicle because the required integration time is too long,” said Pablo Acedo Gallardo, PhD in Telecommunications Engineering at UC3M.
The sensor works using reflection spectroscopic techniques, ie using light beams and photo detectors to analyze the vehicle’s environment. “Our sensor is based on a dual frequency optical comb, optical means to direct the output beam of the comb, a photo detector and a receiving optic,” explains Marta Ruiz Llata, PhD in Electrical, Electronic and Automatic Engineering at UC3M. Based on the received light signal, this electronic photo detector analyzes the radio frequency spectrum of the detected signal and translates it into a visible image of the road condition.
Source: La Verdad