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KTU Faculty of Electricity and Electronics (KTU EEF) Professor Vytautas Markevičius and Head of the Department of Electronic Engineering prof. Dangirutis Navikas ensures that the use of speed sensors is much broader than we imagine.
“This is not only a tool to discipline traffic violators, but also a useful tool to monitor car traffic in case of congestion or to identify the type of vehicle,” say KTU researchers.
According to V.Markevičius, speed sensors are used to calculate the flow of the car, direct it and regulate it with the help of smart signals.
“Measuring whether we are driving too fast and catching criminals is just another tool to monitor traffic. By monitoring the speed of moving cars, it is also possible to calculate the preliminary number of cars and the load on the road,” says the professor.
Greater benefits of speed sensors.
V. Markevičius notes that the main technological difference between the under-road speed sensor and the PoliScan FM1 is its maintenance.
The tripod needs to be monitored and protected from vandals, recharged. Meanwhile, the speed sensor is unobtrusive and does not require much maintenance, so operating the device requires much lower costs, “says the KTU EEF professor.
D.Navikas adds that compared to inductive loops, which are installed at most traffic lights, the intervention of the speed sensors developed by the KTU EEF scientists on the road is much lower, therefore they are much easier to install.
“Our sensor, which is installed on the way to one of the Lithuanian airports, is distinguished by the fact that thanks to it we can not only record the speed of traffic, but also its type and the way it travels, for example, performs a flexing maneuver, “notes KTU EEF scientists.
According to them, one of the advantages of the sensors is to take pictures of the car numbers in the right place, not when the movement is noticed, but when the car approaches the sensor about one meter, depending on the speed of the movement. A quality photo is obtained at the exact location.
“Due to the inaccurate calculation of the distribution of car traffic in large cities, drivers spend more time in traffic jams than driving. Installing speed sensors on heavily congested roads would facilitate the distribution of car traffic. And if a traffic jam occurs during off-peak hours, it would be possible to suspect an accident and warn drivers of choosing another route, “the researchers say.
In the future, the magnetic signature of the car.
Speed sensors, radars, and other traffic monitoring devices track vehicle numbers to find the vehicle owner, but according to KTU EEF researchers, they can be replaced by various alternatives after more than a decade.
“One of the solutions could be the magnetic signature of the car,” says V. Markevičius.
A vehicle’s magnetic signature is called distortion of Earth’s magnetic field when a vehicle passes a sensor. The in-car magnetic signature does not require additional accessories, unlike RFID (radio frequency identification).
According to D. Navik, car license plates can be changed by other means, which are many times more precise: RFID tags.
It was noted that when parking was possible with a ticket, the RFID system’s principle of parking management was not as popular as it is now that cars are identified by license plates.
“This principle of parking management has not been as popular, because the labels integrated into several cards are extremely easy to lose. However, if all this were integrated in the car, everything would be different,” says D. Navikas.
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