【摘要】 可靠的回收系统是海洋仪器进行有效观测和获取数据的关键一环,其中仪器在海面上与科考船之间的通信信标是回收系统中的重要组成部分。该文设计的低功耗海上仪器回收通信信标是一套可用于海洋仪器回收的轻量化信标机——集成了全球定位系统(GPS)定位模块和Lora低功耗远距离通信模块,浮出海面后可自动切换为待机模式。该系统在低功耗待机模式下理论待机时间长达5年,正常工作模式下可连续工作不少于48 h。仪器上浮后可以将位置信息发送至客户端,有效通信距离达到7 km,并满足9 000 m水深的深海适用要求。功耗测试与通信测试表明,该设备具有功耗低、定位精度高、可靠性高、通信距离较远的优点。更多还原

【Abstract】 A reliable recovery system is crucial to marine instruments for effective observations and data acquisitions. The communication beacon between the instrument on the sea and the scientific research ship is a key part of the recovery system. The low-power marine instrument recovery communication beacon designed in this paper is a set of lightweight beacon machines that can be used for marine instrument recovery. The system integrates a global position system(GPS) positioning module and a Lora low-power long-distance communication module. The system can automatically switch to the standby mode while it float up. The system can work continuously for 48 h. Under the low-power standby mode, the theoretical standby time is over 5 years. Once the instrument floats up, the location information can be sent to the nearby ships. The effective communication distance can reach 7 km. The system can bear the pressure up to 9 000 m water depth. Power consumption test and communication test showed that, the proposed instrument has low power consumption, high positioning accuracy, high reliability, and long communication distance.更多还原