Remote Sensing Device (RSD) Remote Sensing equipment measures vehicle emissions from the roadside while a camera photographs the vehicle’s license plate. Remote Sensing Devices (RSDs) are specially designed emissions analyzers that are placed at fixed locations or in mobile units to measure specific vehicle emissions using low-intensity infrared and ultraviolet beams.

Remote sensing using absorption spectroscopy technology to measure exhausts emissions. Remote sensing system can measure thousands of vehicles per day. It’s the high efficiency also no interrupt of driving. It widely using in the transportation and environment department.

The purpose of remote sensing device:

  1. Monitor air quality and collect vehicle emission data;
  2. Comparison the emission data of the vehicle in the factory and the actual real on road;
  3. Whether the vehicle is inspected and maintained;

The advantages:

  1. Real on-road testing without interrupt the driving;
  2. No workers needed on the road, labor saving;
  3. High efficiency thousands of vehicles measured per day;
  4. Surveillance automatically;

There are 3 types of the remote sensing device: horizontal, vertical, mobile. Most countries are using horizontal and mobile type which is budget saving as well as easy maintenance. For one set of remote sensing device test 1 lane without stopping vehicles.

Horizontal Remote Sensing Device
Mobile Remote Sensing Device
Vertical Remote Sensing Device