Sensor for measuring tiny concentrations of particulate matter
Hella has developed a particle sensor designed to measure tiny concentrations of particulate matter in the interior and in immediate vicinity of vehicles. This includes fine dust particles with a diameter of less than 2.5 µm. The PM2.5 particle sensor is expected to go into series production at the end of 2020.
"High concentrations of particulate matter continue to be a major health hazard, especially in built-up urban areas. This is because tiny particles of fine dust in particular can accumulate in the lungs, where they cause both short and long-term health risks," said Marco Döbrich, head of the sensors business field and the technical center at Hella's site in Bremen, where the sensor was developed. "We want to contribute to sustainably improving individual air quality. Our new particle sensor is a key component in this context."
The company says that its first customer order envisages initially equipping vehicles with two PM2.5 sensors. The first sensor controls air quality inside the vehicle and improves it by automatically regulating the air supply and the efficient use of air filters. The second sensor measures the concentration of fine dust in the vehicle's immediate vicinity. This information can be used for display and automatic air recirculation control. The PM2.5 particle sensor can also be used to implement other digital use cases, such as route planning with consideration of the local air quality.