Design and Implementation of a Low-Power Noncoherent UWB Ranging System for Asset Tracking
Shoeib Rahmatollahi
1
(
Department of Electrical and Computer Engineering, Mashhad Branch, Islamic Azad University (IAU), Mashhad
)
mohammad taherzadeh
2
(
)
mohammad Javadian Sarraf
3
(
Department of Electrical and Computer Engineering, Mashhad Branch, Islamic Azad University (IAU), Mashhad
)
Keywords: Two way ranging, Smart market, Asset tracking, UWB positioning,
Abstract :
A two-way ranging system based on non-coherent ultra-wideband (UWB) technology has been designed and implemented. This system employs an innovative low-power non-coherent UWB radio module in combination with the STM32L051 microcontroller for overall power management. Developed for indoor asset tracking, the system focuses on reducing energy consumption, achieving high accuracy, and enabling high update rates. By employing a clock period division technique into four smaller windows at both the anchor and target ends, the signal reception time accuracy is improved by a factor of four. After averaging, we have achieved a ranging accuracy of 10 cm. Additionally, averaging only 100 raw ranging samples reduces the standard deviation of measured distances to 12 cm. Increasing the number of samples improves the measurement standard deviation but reduces the update rate and also increases the target power consumption. Measurements indicate that the target's power consumption is 24 µW with 100 samples and a 1 Hz update rate, which is significantly lower than similar systems. Experimental results and comparisons with advanced systems demonstrate that the proposed method is highly suitable for real-time localization systems and low-power applications. This work has potential applications in various industries, including warehouse management, medical asset tracking, and localization in industrial environments. It is proposed as an efficient and cost-effective solution for indoor positioning applications
Development of a low-power non-coherent UWB ranging system with an ultra-low power consumption of 24 µW.
using clock division into four overlapping windows to improve ranging accuracy to 10 cm.
Evaluation of environmental factors, such as temperature and electromagnetic noise, on system performance.
Adaptation to dynamic and harsh industrial environments with robust noise and interference immunity.
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