Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2020 Nov 9;19(4):53–60. doi: 10.1109/MPRV.2020.3021321

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

This article is free to access and download, along with rights for full text and data mining, re-use and analysis.

PMC Copyright notice

Figure 1. — Wearable proximity estimation in the range of 0.2–2.5 m based on oscillating magnetic fields. (A) Distance versus received signal strength analysis. (B) Wearable prototype hardware. (C) Study data analysing BT and magnetic field based proximity estimation in a shop scene with five participants (P1-5) in groups (P1, P2) and (P3, P4), while P5 is further away. Top panel: BT signals are weakly separable. Bottom panel: Example magnetic field-based distance estimates for P3 showing rare events of getting below 2 m to others than P4. (D) Analysis scene from a workshop test of the proximity estimation methods.