Advanced real-time positioning systems for people and asset tracking

End-to-end wireless solutions for real-time localization of people and assets in hospitals, offices, shopping malls, car parks, warehouses, and factories.

Example of indoor asset tracking

The challenge of indoor localization

Global navigation satellite systems (GNSS) such as GPS and Galileo are immensely popular localization technologies. Based on timing signals broadcasted by satellites, these systems, however, stop functioning where the quality of the timing signals is not good enough, for example indoors. GNSS positioning also requires a significant amount of energy on the end device side for an accuracy limited to a few meters (generally).

Why is an indoor positioning system used?

Nonetheless, there are several use cases where localizing persons and objects is still necessary:

  • Emergency evacuation situations
  • Vast warehouses
  • Dangerous or health hazard environments
  • Digital inventory
  • Secure access control

That is the reason why CSEM has developed wireless solutions for people and asset tracking that can provide very accurate indoor positioning in real time using a limited amount of energy. These solutions are compatible with:

  • Different technologies: Received signal strength indicator (RSSI), Angle of Arrival/Departure, Time of Flight
  • Protocols: Wi-Fi, ultra-wideband (UWB), Bluetooth Low Energy, proprietary RF protocols
  • Radio frequencies: sub-GHz, 2.4 GHz, 3 GHz – 10 GHz

How accurate is an indoor positioning system?

The accuracy of indoor positioning systems can vary greatly based on the technology used and the specific environmental conditions. Our high-precision systems can achieve impressive accuracy down to the centimeter level (e.g., UWB). However, for most practical applications, an accuracy within a few meters is sufficient (e.g., RSSI at sub-GHz or 2.4 GHz).

Case studies of real-time people and asset positioning systems

In the past years, CSEM participated in several technological projects that allowed us to develop a consistent portfolio of solutions for some of the use cases mentioned above.

Emergency evacuations: cruise ships safety and offshore workers’ safety

The projects Lynceus and Lynceus2Market developed a localization solution to ensure safe and complete evacuation of passengers on cruise boats in case of emergency situations.

The project OffshoreMuster replicated the results of the above project to increase the safety of workers on offshore oil and gas operations.

Locaization in emergencies: boat evacuation

Localization in emergency situations (boat evacuation)

Highlights of our solution for sea vessel safety and emergency evacuation:

  1. End-to-end complete solution provided by CSEM (RF tags, infrastructure, and backend)
  2. High accuracy (3 to 5 m) in challenging RF environment (all metal)
  3. Dual radios (868MHz proprietary protocol and 2.4GHz Bluetooth Low Energy) for robustness
  4. Dual localization algorithms (proximity and probabilistic proprietary particle filtering)
Hospital environment. Illustration of indoor patient monitoringPatient monitoring in hospitals

Healthcare: Monitoring of patients in hospitals and elderly people at home

Remote monitoring solutions are of critical importance to guarantee the quality of life of elderly people living alone at home and to control the health of patients in hospitals. Geofencing technology may protect mentally ill people from accessing dangerous areas; indoor localization may help in detecting falling or health issues quickly, thus reducing intervention time in case of life-threatening issues.

 Key features for people security and asset management in hospitals and at home:

  • Wrist-based localization system for medical care units
  • Prevention of cognitively impaired people to open doors of restricted areas
  • Real-time bed localization for improved patient service
Happy customer using keyless car accessKeyless car access is an important feature for the automotive industry

Secure keyless car access

Opening a car without a physical key is becoming increasingly important in the automotive industry. The keyless entry system is designed to ensure that the car is only opened when the legitimate user is in proximity of the vehicle. A properly designed localization system is crucial to achieve this result.

At CSEM, we co-developed a secure market-leading localization of drivers with a high accuracy indoor/outdoor localization using Impulse Radio UWB (IR-UWB) for Two Way Time of Flight (TWTOF) ranging.

The system is compatible with low- and high-rate pulse repetition frequency (HRP/LRP) UWB radio interface, with an accuracy of 5-10 cm in line-of-sight and 60-100cm in non-line-of-sight.

Why choose CSEM for indoor positioning?

CSEM assists its customers in the realization of an efficient and effective indoor localization and tracking system. CSEM can act as a one stop with state-of-the-art technology blocks (HW/FW/geolocation engine) to transform any kind of RF signals into geographical coordinates.

Benefits of CSEM's indoor positioning systems

End-to-end solution (edge devices, infrastructure and backend)

  • Technology agnostic
  • Low power
  • Real time
  • High accuracy
  • Customizable algorithms for precise localization
  • Tools for debug, collection, and storage of mobility data
  • Installation and configuration
  • Standard-compliant solutions

Applications of our technology

  • Asset tracking
  • Warehouse inventory
  • Industrial logistics
  • Parking lots
  • Emergencies management
  • Secure access control
  • Self-localization of sensors in harsh environments
  • Indoor/outdoor transition
  • Low-power protocol management

Looking for custom indoor positioning solutions?

Contact us to explain your needs and figure out what is the most appropriate solution for your indoor positioning needs!

To probe further

Explore further the literature published in selected Conferences and Journal Papers

J. Beysens, "Performance Comparison of Radio Frequency based Angle-of-arrival and Ranging Solutions", CSEM Scientific and Technical Report, 2023, page 30.

Y. Piguet, J. Beysens, "Development of an Embedded Bluetooth Low Energy Based Angle-of-arrival Algorithm", CSEM Scientific and Technical Report, 2023, page 31.

J. Beysens, S. Narduzzi, L. Bergamini, "AI-based Localization: Learning from Synthetic Data from a Genetically Guided Digital Twin", CSEM Scientific and Technical Report, 2022.

C. Kassapoglou-Faist, R. Berguerand, A. Restrepo Zea, M. Sénéclauze, P. Dallemagne, “Pilot Demonstration of RF-based Localization and Monitoring in Offshore Platforms”, CSEM Scientific and Technical Report, 2022.

I. Panaretou, et al., "OffshoreMuster: An Integrated Real Time Localisation, Mustering And Evacuation Management System For Offshore Oil & Gas Health And Safety Operations", ADIPEC Technical Conference, Abu Dhabi, November 2021.