One Tree Island Sensor Relay Pole 1 (RP1)

A 6m steel pole has been installed within Central Bommie within the main lagoon of One Tree Island as part of the sensor network infrastructure at One Tree Island in the southern Great Barrier Reef off Gladstone, Australia. The sensor-relay pole provides a platform for the installation of sensors to measure and monitor water conditions within the lagoon of One Tree Island. The pole has real time communications using 900MHz spread spectrum radio back to a base station on One Tree Island. The pole is initially configured with a single thermistor string with six thermistors that is located down the outer wall of the bommie into the main lagoon and so provides a temperature profile of the main lagoon of One Tree Island. The data is collected every 10 minutes and relayed via the base station to the Data Centre at the Australian Institute of Marine Science (AIMS).The system uses a Campbell Scientific logger into which the sensors are connected. The equipment is serviced every six months with plans to install additional instruments such as pressure and salinity. The pole is available for mounting of additional third part instruments and so forms an infrastructure to support future observational work at the Island.
The Pole is one of three located in One Tree Island, one in each of the main sub-lagoons that make up the main lagoon of the reef. Each pole communicates with the other poles and back to the base station located on the Island using spread-spectrum radios, the base station currently uses a Telstra nextG connection back to the mainland and from there the data goes back to AIMS.The poles have a Campbell Scientific CR1000 logger into which the sensors are attached, the logger stores the data and then forwards it to the base station. The current sensors deployed include thermistor strings on each pole and a Vaisala WXT520 weather station on RP3.
Power SupplyBattery Backed (1 x 33Ahr AGM with Solar Regulator), 4 x 5W Solar Panel Supply.Logger Settings - Pakbus Address - 210Logger Setup as router (isRouter = True)CSDC7 comms board rate set at 34KOver-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 - Retry level - Low

澳大利亚格拉德斯通外南大堡礁（Great Barrier Reef）区域的一塔岛（One Tree Island）传感器网络基础设施中，一根6米长钢制杆体已安装于该岛主潟湖内的中央岩礁（Central Bommie）中。该传感器中继杆体为安装传感器以监测一塔岛潟湖内的水体环境提供了承载平台。该杆体通过900MHz扩频无线电实现实时通信，回传数据至一塔岛上的基站。该杆体初始配置有一套由6个热敏电阻组成的热敏电阻串，部署于中央岩礁的外壁并延伸至主潟湖内，可获取一塔岛主潟湖的温度剖面数据。数据每10分钟采集一次，并通过基站回传至澳大利亚海洋科学研究所（Australian Institute of Marine Science, AIMS）的数据中心。该系统采用坎贝尔科学（Campbell Scientific）数据采集器连接各类传感器。设备每半年维护一次，且计划后续加装压力、盐度等监测仪器。该杆体可兼容第三方仪器的挂载，因此可作为支撑一塔岛未来观测工作的基础设施。

一塔岛共计部署3根此类杆体，分别位于构成该礁主潟湖的三大次级潟湖中。每根杆体均通过扩频无线电与其他杆体及岛上基站通信，当前基站通过Telstra nextG网络回传数据至澳大利亚本土，再转送至AIMS数据中心。每根杆体均搭载坎贝尔科学CR1000数据采集器，传感器即接入该采集器；采集器负责存储数据并转发至基站。当前部署的传感器包括各杆体上的热敏电阻串，以及RP3站点上的维萨拉（Vaisala）WXT520气象站。

供电方案：蓄电池备份系统（1组33安时AGM蓄电池搭配太阳能控制器），辅以4块5W太阳能板供电。
数据采集器配置参数：
- Pakbus地址：210
- 配置为路由器模式（isRouter = True）
- CSDC7通信板速率设置为34K
- 礁上射频网络：RF411模块接入采集器的CSIO端口
- 无线电配置：
- 活动接口：数据采集器CSD
- CSDC地址：7
- 协议：支持Pakbus协议
- 无线电网络地址：0
- 跳序编号：0
- 功耗模式：重试等级为低