Smartphone accelerometers distinguish between different motorized transportation modalities

Nov 13, 2013

Identifying the individual's transportation behavior is a fundamental problem, as it reveals information about the user's physical activity, personal CO2 -footprint and preferred transit type. On a larger scale, this information could be aggregated to discover information about the utilization of different transportation options to aid urban planning.

Researchers from the University of Helsinki have developed methods for extracting information about vehicular movement patterns from measurements of a smartphone accelerometer. The key idea is to extract characteristic acceleration and breaking patterns and to use these as a kind of signature to separate between different vehicular transportation modes.

The main researcher, Samuli Hemminki, explains: "Extracting vehicular movement from smartphone accelerometers is challenging as the placement of the device can vary, users interact with the phone spontaneously, and as the orientation of the phone can change dynamically. We overcame these challenges by developing novel algorithms for processing and analyzing accelerometer measurements."

Experimental evaluations demonstrate that the technique can detect most common public transportation types (bus, tram, metro, train, car, walking) with over 80 per cent accuracy. The benefits of the method are particularly pronounced in daily monitoring as the system has low power consumption and works robustly in continuous detection tasks.

Dr. Petteri Nurmi from University of Helsinki adds: "Our work enables fine-grained modeling of human transportation behavior and serves as an important building block for new kinds of mobile applications. For example, our methods would be beneficial to an application that provides feedback to encourage drivers towards more ecological driving style or to map deviations in public transportation."

Professor Sasu Tarkoma explains: "This research shows that it is possible to accurately detect the transportation mode on smartphones in an energy efficient manner. The system enables a whole new breed of mobility-aware applications and services."

Explore further: Off-world manufacturing is a go with space printer

More information: The research paper will be presented at the 11th ACM Conference on Embedded Networked Sensor Systems SenSys'13 in Rome, Italy on 11 November, 2013.

add to favorites email to friend print save as pdf

Related Stories

Recommended for you

Off-world manufacturing is a go with space printer

5 hours ago

On Friday, the BBC reported on a NASA email exchange with a space station which involved astronauts on the International Space Station using their 3-D printer to make a wrench from instructions sent up in ...

First drone in Nevada test program crashes in demo

22 hours ago

A drone testing program in Nevada is off to a bumpy start after the first unmanned aircraft authorized to fly without Federal Aviation Administration supervision crashed during a ceremony in Boulder City.

Fully automated: Thousands of blood samples every hour

Dec 19, 2014

Siemens is supplying automation technology for the longest and one of the most cutting-edge sample processing lines in any clinical laboratory. The line, or automation track, 200 meters long, in Marlborough, ...

Explainer: What is 4-D printing?

Dec 19, 2014

Additive manufacturing – or 3D printing – is 30 years old this year. Today, it's found not just in industry but in households, as the price of 3D printers has fallen below US$1,000. Knowing you can p ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.