Using Wheel Pulse Transducers (DMI) for Mobile Mapping

Michigan Scientific Wheel Pulse Transducers are distance measuring instruments (DMI) that provide accurate reliable distance measurements for georeferencing and mobile mapping systems.

Compatible with vehicle-based mobile mapping systems (MMS), the Wheel Pulse Transducer mounts directly to the vehicle wheel and integrates with position and orientation (POS) and imaging modules to provide crucial distance data to supplement GPS/GNSS signals. A illustrates how high-resolution Wheel Pulse Transducer data not only helps to compensate for breaks in GPS signal but can outperform GPS sensor performance/distance tracking accuracy.

Michigan Scientific have proven to be a durable alternative to OEM DMIs for acquiring mobile mapping data in rugged environments. Building on decades of experience with on-vehicle slip ring technology, our weatherproof Wheel Pulse Transducer is ideal for testing in rainy, snowy, or dirty environments.

How do DMIs Work?

Distance measuring instruments or indicators include wheel sensors or odometers that calculate distance traveled based on the number of the vehicle’s wheel rotations. The encoder inside the DMI uses optical technology to generate pulses or output signals representing partial revolutions of the vehicle wheel to determine the precise linear distance traveled.

The DMI is connected to the vehicle’s wheel and the vehicle-mounted mobile mapping system.

Michigan Scientific Wheel Pulse Transducers provide reliable measurements to aid in mapping innovation. End users can use multi-sensor fusion SLAM (simultaneous localization and mapping) algorithms to pair the DMI with LiDAR sensor technology, high-resolution cameras, and GPS technology. This allows users to collect precise geospatial data for incredibly detailed mapping and indoor/outdoor 3D modeling. DMI technology simplifies data collection in even the most challenging environments in urban planning, infrastructure development, and environmental monitoring applications. today to discuss your application!