中圖分類號：TN98
文獻標志碼：A
DOI: 10.16157/j.issn.0258-7998.223516
中文引用格式： 張毅，趙培軍，袁玲，等. 基于BLE Mesh的資產定位系統(tǒng)設計[J]. 電子技術應用，2023，49(7)：72-76.
英文引用格式： Zhang Yi，Zhao Peijun，Yuan Ling，et al. Design of assets positioning system based on BLE mesh[J]. Application of Electronic Technique，2023，49(7)：72-76.

Design of assets positioning system based on BLE mesh

Abstract： It is difficult to effectively balance the positioning accuracy, construction cost, and deployment flexibility of the current asset positioning system. To address this challenge,this paper designs an asset positioning system based on bluetooth low energy (BLE) mesh using multidimensional scaling-map (MDS-MAP) positioning algorithm. Firstly, the original received signal strength indicator (RSSI) value is filtered by Gauss-Kalman fusion to improve its accuracy. Then, time to live (TTL) is used to restrict the relay nodes, which improves the data transmission efficiency. Finally, in order to reduce the ranging error, the range matrix is modified by using the radius compensation method and the Bellman-Ford fusion iteration scheme. The experimental results show that the designed system can effectively update the bluetooth tag information and display the location, and the average positioning accuracy reaches 0.94 m. This system has the advantages of low cost and convenient engineering implementation, and has certain application value and development prospect.

Key words : bluetooth low energy （BLE） mesh；received signal strength indicator （RSSI）；Gauss-Kalman fusion filtering；TTL constraint；Bellman-Ford algorithm；asset positioning system