Automotive MiCS Air Quality Sensors
Air Quality Sensing (AQS) modules
AQS principle
By measuring pollution levels external to a vehicle with an Air Quality Sensor, the climate control system of a car is able to close the air inlet (recirculation mode), when the vehicle travels through a polluted area.
The following manufacturers trust e2v's sensors to protect their customers:
- BMW : X3
- Citroën : C4 Picasso
- Ford : Mondeo
- Mercedes : A-class, B-class
- Renault : Laguna, Espace, Vel Satis
- Volvo : S40, V50
e2v offers a wide variety of AQS solutions, each of which integrates two dedicated gas sensing chips, one for reducing gases (CO/HC) and one for oxidizing gases (NOx). These modules measure a broad range of reducing gases that are commonly found in traffic pollution, including CO, hydrocarbons and NOx.
| Product description | Output signal | Input voltage | Dual chip | Options |
PWM dual |
PWM | 13.5 V | Yes | Different # of pollution levels, various frequencies |
LIN dual |
LIN | 13.5 V | Yes | LIN 1.2, LIN 1.3, LIN 2.0 |
RAW dual |
Two independent resistive outputs | 5 V | Yes | No |
Watertight versions of these modules are available.