Internship Bluetooth Mesh communication

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Mesh networking for 24 Bluetooth soccer activity trackers

About Demcon

Each one of our companies differentiates itself in its own domain with unique expertise and skills. This way they help customers improve their performance and achieve more. On the basis of their passion for technology our companies are able to combine forces. By sharing knowledge and working together we increase our social impact. Demcon johan sports is a developer of GPS tracking systems for monitoring the health and improving the performance of sports teams.

What are you going to do?


At Demcon JOHAN Sports, GPS & heart rate trackers  are made for football & hockey teams to let players perform optimally and prevent injuries.  The system collects data, using trackers that communicate via Bluetooth during matches and training sessions. This data is used during training sessions and matches to monitor the fitness and load of the players. The data is sent by the trackers via a hub to a tablet of the coache. This data ranges from information about number of sprint meters and accelerations to time spent in different heart rate zones. More than 125 teams from 28 countries use this platform.

During matches and training sessions, the aim is to have continuous insight in player data from the trackers, so the connection of trackers to the hub should be available as much as possible.  However, there are a few factors that disrupt this connection. During the match, other radio traffic limits the distance of communication. Additionally, the body of a player and other players block or disrupt communication, if they are between the hub and the tracker. Blocked communication results in the coach seeing old player data and incorrect differences in values like running distance.


The assignment is to investigate if Bluetooth mesh communication can improve the availability of data for the coach during matches and training sessions with many radio disruptions. At the moment, Bluetooth is used in a star form, where all trackers communicate to the central hub, which in turn communicates to the coach’s tablet. The trackers send packages at 1 Hz with updates on speed, heart rate, distance run and other parameters, directly to the hub. Sometimes the entire field has to be bridged with all the disruptions that entails. The aim is to investigate and demonstrate whether mesh communication, in which the message is sent to the hub via intermediate trackers, provides a more stable communication channel in match situations compared to current direct communication. It is possible to use a combination of mesh and star communication and to test other forms of messages. Validation of solutions is can be performed during matches of FC Twente in the stadium.

What do you bring to the table?

  • Relevant master, for example electronics or computer science

What do we offer you?

  • Working in a small team and an informal environment
  • Work place with the department in Best. With a possibility to work from home (if required, 2 days a week).
  • Work Laptop
  • A monthly compensation

Do you have any questions about this position?

Do you have any questions about this assigment? We will be happy to answer them. Call to Bibi van Berlo, corporate recruiter at 06-51619477.

Have we aroused your interest for this assignment? Then we look forward to receiving your cv. You can apply via the application button.

Acquisition based on this advertisement is not appreciated.

"bringing ambitious challenges to a success together."

application procedure.

Does this vacancy appeal to you and are you curious about the application process? This goes as follows:

1. Apply
You have applied! We will discuss it internally and respond as soon as possible.
2. Phone call
We got acquainted briefly and want to get to know each other better.
3. First call
See if there is a match from both sides and if the expectations are correct.
4. Second call
We investigate a possible collaboration more closely.
5. Offer
We both see the match! Let’s make you a suitable proposal.
6. Contract
Your response to the offer is positive. We are going to finalize the collaboration!