湖南大学学报（自然科学版）2024，Vol.51Issue(8)：47-56,10.DOI:10.16339/j.cnki.hdxbzkb.2024277
低功耗海上救援个人示位标的设计与实现
Design and Implementation of a Low Power Personal Location Beacon for Maritime Search and Rescue
摘要
Abstract
This paper designs and implements an improved personal location beacon(PLB)for maritime search and rescue.The PLB has the functions of Beidou navigation and positioning,Beidou short message communication,human vital signs monitoring and reporting,and water touch trigger.What's more,the proposed PLB supports the COSPAS-SARSAT system.To extend the working time of the PLB,this paper introduces a dynamic power management method to conduct the power channels of different functional circuits.Meanwhile,this paper designs an ultra-low power consumption standby circuit and low power consumption software control scheme to reduce power dissipation.Finally,the prototype of the PLB is tested,respectively,in the adjacent sea areas of Weihai City in Shandong Province and Ningbo to Zhoushan City in Zhejiang Province.The test results of the prototype show that in the standby state,the current of the PLB is 2.3 μA,with a standby time exceeding 5 years;in the state of receiving the Beidou short message,the current is 79 mA;and in the state of transmitting rescue messages,the 7 000 mAh 7.4 V battery can send 200 distress messages.Compared to existing products,the proposed PLB in this paper for maritime rescue has lower standby power consumption.关键词
海上救援/个人示位标/超低功耗待机/动态电源管理Key words
maritime search and rescue/personal location beacon/ultra-low standby power/dynamic power management分类
交通工程引用本文复制引用
廖密,聂桂根,赵静,贺喜..低功耗海上救援个人示位标的设计与实现[J].湖南大学学报（自然科学版）,2024,51(8):47-56,10.基金项目
基于北斗导航系统的海上搜寻定位关键技术合作研究(2018YFE0206500) （2018YFE0206500）
