Zhang, Jiaxing;
Zhang, Qingyu;
Wu, Yu;
Jiang, Dai;
Demosthenous, Andreas;
(2025)
A Method for Improving the Wearability of Capsule Positioning System Using Particle Filter.
In:
Proceedings of the IEEE International Symposium on Circuits and Systems (ISCAS) 2025.
IEEE: London, UK.
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Abstract
Ingestible capsules with position tracking capabilities bring a significant advancement in the diagnosis and treatment of gastrointestinal disorders. However, the wearability of these capsule positioning systems is restricted by the weight and shape of the transmitter (Tx). To enhance the wearability and flexibility of the system, a novel positioning system using particle filter (PF) is proposed. By employing PF, the system can calculate the capsule's position in 3D space using only a belt-shaped Tx coil, paired with a single Rx coil and an inertial measurement unit (IMU). PF iteratively updates the estimated position based on the capsule movement and changes in mutual inductance (MI). The performance of PF with different noises is analysed. Simulation results show that the system has a 22.5 × 11.5 × 27 cm<sup>3</sup> field of view (FOV), a root mean square error (RMSE) of 13.89 mm under noise.
| Type: | Proceedings paper |
|---|---|
| Title: | A Method for Improving the Wearability of Capsule Positioning System Using Particle Filter |
| Event: | 2025 IEEE International Symposium on Circuits and Systems (ISCAS) |
| Dates: | 25th-28th May 2025 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/iscas56072.2025.11043695 |
| Publisher version: | https://doi.org/10.1109/iscas56072.2025.11043695 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| Keywords: | Capsule localization, Gastrointestinal tract, Ingestible capsules, Inertial navigation, Particle filter |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10213862 |
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