基于最小二乘法的地磁传感器轻量级温补机制设计与实现  

Design and implementation of lightweight temperature compensation mechanism for geomagnetic sensor based on least square algorithm

作　　者：丁华泽 胡育昱[1] 魏智[1] 纪立 楼亮亮[1] DING Huaze;HU Yuyu;WEI Zhi;JI Li;LOU Liangliang(Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,China)

机构地区：[1]中国科学院上海微系统与信息技术研究所,上海200050

出　　处：《传感器与微系统》2022年第2期78-81,共4页Transducer and Microsystem Technologies

基　　金：中科院重点部署项目(KFZD—SW—431);国家重点研发计划子资助项目(2018YFC1505204—2)。

摘　　要：基于地磁传感器的物联网(IoT)感知技术被广泛应用于列车定位导航、速度监测和安全控制等场景中。然而,半导体材质温度敏感性影响到地磁传感器量测数据的精准性。在充分考虑铁路物联网感知设备能量和资源受限性的基础上,提出基于最小二乘法多项式曲线拟合构建轻量级温度补偿机制,以此提升地磁传感器铁路物联网感知设备在复杂环境下的稳定性。实验表明:所提温度补偿机制具有资源占用率低、微能耗和精准性高等特性。The Internet of Things(IoT)technology based on geomagnetic sensors is widely used in train positioning and navigation, speed monitoring and railway safety control.However, the temperature sensitivity of semiconductor materials affects the accuracy of measurements obtained from geomagnetic sensors.To this end, this paper fully considers the energy and resource limitations of IoT based sensing devices, and proposes a lightweight temperature compensation mechanism based on least squares polynomial curve fitting algorithm to improve the stability of IoT based sensing devices in railway environments.Finally, the experiment shows that the proposed temperature compensation mechanism has the advantage of low resource occupancy rate, low energy consumption and high accuracy.

关 键 词：铁路物联网 地磁传感器 最小二乘法 轻量级温度补偿 

分 类 号：TP216.1[自动化与计算机技术—检测技术与自动化装置]