The RSD6000™ is our latest instrument, offering new capabilities and enhanced specifications. It remotely measures exhaust emissions from motor vehicles as they drive past the device on streets and highways. Emissions are measured spectroscopically by casting a narrow infrared (IR) and ultraviolet (UV) beam of light across the road and through the trailing exhaust of passing vehicles. A mirror then reflects the IR/UV light back to a series of detectors that measure the amount of transmitted light at characteristic wavelengths absorbed by the pollutants of interest.
The RSD6000™ is a non-intrusive device that measures emissions from vehicles circulating under real-driving conditions. It captures measurements in just a second, allowing for the collection of large quantities of vehicle emissions data quickly. The system uses spectroscopic absorbance in infrared (IR) and ultraviolet (UV) light to measure pollutants such as hydrocarbons (HC), carbon monoxide (CO), carbon dioxide (CO2), nitrogen monoxide and dioxide (NO and NO2, separately and combined as NOx), ammonia (NH3), and particulate matter (PM) as a proxy from opacity. By taking the ratios of these pollutants to CO2 and applying stoichiometric rules and conversion factors, the emission values can be expressed in meaningful units (e.g., g/kg fuel burned), which can then be converted to travel distance emissions (g/km) with appropriate assumptions. The RSD’s non-intrusive nature allows it to monitor vehicles without interfering with traffic flow.
Portable setup
The most typical configuration of our technology is a portable setup for flexible monitoring and easy deployment. The RSD can be quickly deployed (20 minutes including calibration), left temporarily unattended and frequently moved to fresh sites. The RSD is fully battery powered, connected to the internet and do not require any modification to the road.
The battery pack provides 20 hours of autonomy, and they can be easily swapped. The video camera can be deployed in a hidden barrel, in disguised roadside cubes, attached to nearby infraestructure or simply deployed on the roadside with a tripod.
The portable deployment offers maximum flexibility.
Fixed setup
The RSD6000 can also be installed on a fixed site for 24/7 monitoring. The RSD modules are housed inside two main IP65 cabinets, deployed at both sides of the road, and anchored to the ground.
The main cabinet is connected to an external power source, for continuous power supply . The RSD6000 can include a rain sensor which activates the closing of the cabinet if rain is detected. Door is opened again automatically after rain stops.
After installation of the two cabinets, and by providing one of the cabins with electricity, the RSD6000 can be placed inside to measure continuously and uninterruptedly. These cabinets include a full temperature conditioning system.
ISO-17025
Opus RSE is the only entity in the world accredited to measure real-driving emissions remotely. Systems are calibrated under ISO methodology. We are audited by the Spanish Acreditation Agency every year.
We provide the cheapest technology to measure real-world traffic emissions. Either for a one-shot study or for long-term programs, the RSD has proven to be very atractive for our clients.
Worldwide partners and clients use the RSDs on their own after a few days training. The RSD is easy to calibrate in a few minutes and it can be monitored remotely by a technician (PC, smartphone, etc.).
Opus RSD correlates with other similar technologies, such as PEMS, by up to 90%.
It is has been a proven and validated system for decades. Even nowadays, independant validations are performed every year.
The portable RSD is deployed without any preperation on the site, so it can be deployed on a new site every day. The system can also be inegrated in cabins, gantries or other road infraestructure for fixed deployment.
The system is designed to inegrate with all ITS, like ALPR cameras, urban sensors, tollboths, etc. Its small size and simplicity facilitates physical integration. Its connectivity ensures any data integration.