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Graz University of Technology develops roadside sensors to measure vehicle exhaust emissions
[ Instrument R & D ] According to foreign media reports, as part of a major project funded by the European Union, researchers at the Graz University of Technology (TU Graz) in Austria have developed a new type of independent roadside sensor that can be used to measure roads. Exhaust emissions from side vehicles.
Today, air pollution is one of the biggest challenges facing European cities. As part of the European Union's 3.3 million euro (US $ 3.7 million) CARES (Remote Sensing for Urban Air Emissions) research project in 2020, the European Union is studying a new type of non-contact vehicle exhaust gas measurement method to enable municipal authorities to take emission reduction measures. Specifically, researchers hope to develop a new type of sensor that can be installed on roadsides, crash barriers, or traffic lights to detect the exhaust emissions of passing vehicles in a matter of seconds.
The project is studying how to introduce new emissions charging standards through the widespread use of independent sensors: the higher the emissions of cars, the higher the fees. It is also possible to automatically monitor vehicles entering the urban environment area, and urban roadblocks will only open automatically if the emissions of such vehicles are within the standard range. In addition, if a vehicle ’s engine is equipped with a particulate filter that can be manipulated manually or a chip that can adjust pollutant emissions, which results in increased pollutant emissions, sensor technology can also identify and expel such vehicles and make them impassable.
Researchers at the Institute of Electronic Sensor Systems at Graz University of Technology are working to simplify the measurement of vehicle emissions as part of the CARES project, which is responsible for all aspects of particle measurement. At present, the test conducted by the institute uses a traditional tuning fork, which uses laser pulses to excite pollutant particles between the tuning forks, which in turn generate a sound signal. The sound signal from each particle will be recorded and played back by the tuning fork. The more particles, the louder the sound will become. The volume of such sounds can then be used to determine how many pollutant particles are in the environment. Researchers expect that mass production of the low-cost emissions measurement remote sensor will be achieved by the end of the project by 2022.
Currently, the technology has been successfully used for gas measurement. Alexander Bergmann, director of the Institute of Sensor Systems at the Graz University of Technology, said: "Our institute has demonstrated for the first time that the technology can be used to measure particles and has the potential to be a low-cost sensor. We want to monitor cities and environmental areas under real conditions. Emissions from vehicles without having to interfere with free-flowing traffic, the future goal is to use these measurements to detect the exhaust level of each car. "Researchers at the Graz University of Technology hope that the measurement method will be used in Milan, Prague and Krakow Cities such as Hugo proved their value, and as part of the CARES project, the cities will test the technology on-site.