Orpheus Island Sensor Float 1

A round 1.4m yellow buoy has been deployed in Little Pioneer Bay, Orpheus Island, just off the research station in the central part of the Great Barrier Reef.The buoy is configured as a sensor-float with a Campbell Scientific logger, a spread-spectrum radio for communicating with the base station (located near the Research Station) a surface mounted (60cm under the water surface) thermistor and an inductive modem to support a range of inductive sensors, initially this will be a SeaBird SBE39 measuring temperature and pressure (depth).The float is moored at the entrance to Little Pioneer Bay, just deep of the reef front and will be used to measure the water entering the bay with particular interest in warm water pushing up into the bay. The data will support work being done in the bay by James Cook University researchers.The unit will be serviced every six months and will be used in the future for attaching new sets of sensors. The buoy is one of two buoys and three relay-poles being deployed on Orpheus Island as part of the GBROOS Project. The design looks to measure the impact of warm water pushing in from the Coral Sea onto the reef flat at the northen end of the island, through the channel to Pelorus Island and around onto the land side of the island. These events are linked to coral bleaching and other climate impacts.The buoys initially have a Campbell Scientific loggers powered off two 5W solar panels, a Garmin GPS unit and one thermistor located at the base of the buoy around 60cm below the water line. The buoys use a Campbell Scientific spread-spectrum radio to talk back to the base station located on Orpheus Island. Power SupplyBattery Backed (1 x 33Ahr AGM with Solar Regulator), 2 x 5W Solar Panel Supply.Logger Settings - Pakbus Address - 171Logger Setup as node (isRouter = False)CSDC7 comms board rate set at 34KCSD7 Beacon = 21600CSDC7 Neighbours range 1 - 1, 110 - 110, 120 - 120Over-Reef RF Network - RF411 attached to the CSIO port of the loggerRadio Settings - Active Interface - Datalogger CSDCSDC Address 7Protocol: Pakbus awareRadio Net Address - 0Hop Sequence - 0Power mode - less than 2mA 1 SecondRetry level - Low

在大堡礁中部科研站毗邻的奥费斯岛（Orpheus Island）小先锋湾（Little Pioneer Bay），已布设一枚直径1.4米的圆形黄色浮标。该浮标为集成传感器浮标（sensor-float），搭载坎贝尔科学（Campbell Scientific）数据采集器、用于与基站（设于科研站附近）通信的扩频无线电、安装于水面下60厘米处的表层热敏电阻（thermistor），以及支持多类感应传感器的感应调制解调器（inductive modem）；初期将搭载海鸟（SeaBird）SBE39温压（深度）传感器。
该浮标系泊于小先锋湾入口处、礁前深水区附近，用于监测流入海湾的水体，重点关注暖水涌入海湾的过程。所获数据将服务于詹姆斯·库克大学（James Cook University）研究人员在该海湾开展的研究工作。
该装置每半年将接受一次维护，未来可用于加装多组新型传感器。作为GBROOS项目的组成部分，奥费斯岛共计划部署2枚浮标与3座中继杆，本浮标为其中之一。本项目旨在监测珊瑚海（Coral Sea）涌入的暖水对岛屿北端礁坪的影响，以及暖水经水道流向佩洛鲁斯岛（Pelorus Island）并环绕至岛屿陆侧的过程；此类事件与珊瑚白化（coral bleaching）及其他气候影响密切相关。
初期浮标搭载坎贝尔科学（Campbell Scientific）数据采集器，由2块5W太阳能板供电，配套佳明（Garmin）GPS单元，以及1枚设于浮标底部、水下约60厘米处的热敏电阻。浮标通过坎贝尔科学扩频无线电与设于奥费斯岛的基站进行通信。
供电系统：采用蓄电池备份方案（1块33Ahr AGM蓄电池搭配太阳能控制器），辅以2块5W太阳能板供电。
数据采集器设置：
- Pakbus地址：171
- 节点设置：作为普通节点（isRouter = False）
- CSDC7通信板速率：34K
- CSDC7信标周期：21600
- CSDC7邻居节点范围：1 - 1、110 - 110、120 - 120
礁上射频网络：RF411模块连接至数据采集器的CSIO端口
无线电参数设置：
- 活动接口：数据采集器CSDC
- CSDC地址：7
- 协议：支持Pakbus
- 无线电网络地址：0
- 跳频序列：0
- 功耗模式：1秒周期内功耗小于2mA
- 重试等级：低