MOIN
Minimum Location Infrastructure
| Duration: | 01.09.2018 - 30.06.2021 |
| Project Leader: | Prof. Dr.-Ing. Horst Hellbrück |
| Staff: | Sven Ole Schmidt, M.Sc. |
Background
A producer stores his semi-finished and pre-products in a hall with numerous narrow aisles in between. Inside the production hall, there are also completely enclosed rooms (sanding, welding and painting booths). From semi-finished and pre-products, the final product is manufactured in several operations. In addition to retrieving the semi-finished and precursors, the entire production process should be automatically monitored, e.g. Determine buffer times. In order to perform an automatic tracking of the production process, the position of the semi-finished and pre-products, as well as the production order, must be retrievable at any time.
With traditional methods, such as barcode or passive RFID, complete tracking is only possible to a limited extent. In addition, these methods cause considerable manual overhead (permanent simultaneous scanning of object and position) and pose a high potential for errors by forgetting a scan. The object can no longer be located in this case.
Existing positioning systems based on radio runtime measurement require a large number of reference points. Due to the hall topology described, the corresponding infrastructure for radiolocation would have to be set up in each individual aisle in this case. A location within the enclosed spaces would be limited or not possible by shielding.
Objective
Fig.1: Minimization of hardware in an indoor localization system.
The aim of this project is the redevelopment of a localization system, which reduces the contained infrastructure to a minimum. For this purpose, the multipath propagation, which is caused by the wireless transmission, is used constructively to initialize virtual anchors from a given anchor, while taking into account the hall topology. Then, these are used analogous to real anchors, which reduces the hardware requirements.
In the subproject Modeling and Algorithms (ModAl) of this cooperation project, the University of Applied Sciences Lübeck is developing a simulation and planning tool that can analyze a given spatial geometry and perfectly position the localization anchor on the basis of algorithmics. In consideration of this planning, we also develop an algorithmic position analysis of the tags.
Approach
Fig.2: Measurement of a channel impulse response.
An important tool for tag localization is the channel impulse response. This describes the multipath propagation through a diagram which maps the received signal in the form of the received signal copies with their individual power and transmission duration.
By correlating with the different paths of multipath propagation, a clear inference of the tag position can be drawn from the received channel impulse response.
Publications
| Evaluation and Error Correction of Position Tracking Systems of Autonomous Vehicles for Indoor Localization Robin Angelstein and Sven Ole Schmidt and Fabian John and Horst Hellbrück Student Conference on Medical Engineering Science, 2022. |
| Modeling the Interference of Ultra-Wideband Signals in Multipath Propagation Channels Kniesel, Jan-Philip and Sven Ole Schmidt and Hellbrück, Horst 2021. |
| Modeling the Path Losses of Ultra-Wideband Signals in Multipath Propagation Channels Schramm, Sascha and Sven Ole Schmidt and Hellbrück, Horst 2021. |
| Modeling UWB Multipath Propagation considering Material-Dependent Reflection Effects Winkel, Torben and Sven Ole Schmidt and Hellbrück, Horst 2021. |
| Comparison of I/Q- and Magnitude-based UWB Channel Impulse Responses for Device-free Localization Marco Cimdins and Sven Ole Schmidt and Horst Hellbrück International Conference on Localization and GNSS, 2021. |
| MAMPI – Multipath-assisted Device-free Localization with Magnitude and Phase Information Marco Cimdins and Sven Ole Schmidt and Horst Hellbrück International Conference on Localization and GNSS, 2020. |
| MAMPI-UWB—Multipath-Assisted Device-Free Localization with Magnitude and Phase Information with UWB Transceivers Marco Cimdins and Sven Ole Schmidt and Horst Hellbrück Sensors 20, 24, 7090, 2020. |
| On the Effective Length of Channel Impulse Responses in UWB Single Anchor Localization Sven Ole Schmidt and Marco Cimdins and Horst Hellbrück International Conference on Localization and GNSS, 2019. |
| Improvements to UWB Channel Impulse Response Measurements for Indoor Localization Matthews, B. and Cimdins, M. and Hellbrück, H. Student Conference on Medical Engineering Science, 2019. |
| Modeling the Magnitude and Phase of Multipath UWB Signals for the Use in Passive Localization Marco Cimdins and Sven Ole Schmidt and Horst Hellbrück 16th Workshop on Positioning, Navigation and Communication, 2019. |
| Understanding and Prediction of Ultra-Wide Band Channel Impulse Response Measurements Benjamin Matthews and Sven Ole Schmidt and Horst Hellbrück Proceedings of the 4th KuVS/GI Expert Talk on Localization, 21--23, 2019. |
Project partner | Founded by | |
| Solcon Systemtechnik GmbH | Bundesministerium für Wirtschaft und Energie Förderkennzeichen: ZF4186108BZ8 | |
 |   | |
