Heron Island Sensor Relay Pole 1 (RP1)

A series of six 6m steel poles have been installed in the lagoon of Heron Island as part of the sensor network deployment at Heron Island. The poles serve two purposes; their primary purpose is to form the backbone of a wireless network that covers the entire lagoon system and secondly they themselves support a range of sensors mounted onto the pole or leading away from the pole. One pole (RP5) also supports a Vaisala WXT520 weather station.This record is for Sensor Relay Pole 1. The pole is solar powered and routes data from the Sensor Floats and other Sensor Relay Poles back to the Base Station located on Heron Island. The system uses the Campbell Scientific CR1000 loggers and RF411 Spread-Spectrum radios to process and route the data. The poles also can support a range of sensors, this pole also has a simple bottom mounted thermistor using the MEA thermistors.The unit will be serviced every six months and will be used in the future for attaching new sets of sensors.
The pole works primarily as a network repeater, it collects data from other poles and the Sensor Floats and routes it back to the Base Station either directly or via another pole. The poles are spaced approximately every two kilometers with the exception of those closest to the island, the base station on the island is on a 19M tower and so a greater range was found for the first set of poles.Each pole therefore provides a wireless data network in a two kilometer radius, the combination of the six poles provides coverage for the entire lagoon. The height of the base station gives around a five kilometre range around the island itself.The poles are 6M in height constructed from galvanized steel with a solar powered instrument top consisting of a battery unit powered from the solar panels, Campbell CR1000 logger and Campbell RF411 radio. The logger can support a range of interfaces and is suitable for connection to a range of instruments.The initial instrumentation is just a single base mounted MEA thermistor, the intention is to add more instruments as time and opportunity allow.
Power SupplyBattery Backed (1 x 33Ahr AGM with Solar Regulator), 4 x 5W Solar Panel Supply.Logger Settings - Pakbus Address - 110Logger Setup as router (isRouter = True)CSDC7 comms board rate set at 34KSDC7 neighbours range: 1 - 180SDC7 Beacon: 3600Over-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

作为苍鹭岛（Heron Island）传感器网络部署项目的一部分，六根6米高的钢制杆体已在该岛潟湖区域完成安装。该系列杆体具备两项核心功能：其一为构建覆盖整个潟湖系统的无线网络骨干架构；其二为搭载各类安装于杆体自身或从杆体延伸而出的传感器。其中编号为RP5的杆体还搭载了Vaisala WXT520气象站（Vaisala WXT520 weather station）。本记录对应的是1号传感器中继杆（Sensor Relay Pole 1），该杆体采用太阳能供电，负责将传感器浮标（Sensor Floats）及其他传感器中继杆采集的数据回传至位于苍鹭岛的基站。该系统采用坎贝尔科学（Campbell Scientific）CR1000型数据采集器与RF411扩频无线电（RF411 Spread-Spectrum radios）处理并回传数据。杆体均可搭载各类传感器，本杆体还加装了一款简易的底部安装式MEA热敏电阻（MEA thermistors）。该设备每半年将接受一次定期维护，未来还可用于加装多组新传感器。
该杆体的核心功能为网络中继节点，可采集其他杆体与传感器浮标的数据，并通过直接链路或其他杆体中继的方式将数据回传至基站。杆体间距约为2公里，紧邻岛屿的杆体除外——岛上基站架设於19米高的塔架之上，因此首批杆体的通信覆盖范围更广。每根杆体可在2公里半径范围内构建无线数据网络，六根杆体协同即可实现整个潟湖区域的全覆盖；基站的架设高度可实现岛屿周边约5公里范围的通信覆盖。
杆体高度为6米，采用镀锌钢制成；顶部搭载太阳能供电单元，包括太阳能板供电的蓄电池组、坎贝尔CR1000数据采集器与坎贝尔RF411无线电模块。该数据采集器支持多种接口类型，可适配多类仪器的连接需求。本杆体的初始配置仅包含一款底部安装的MEA热敏电阻，后续将根据时间与实际条件加装更多仪器。
电源供应：采用蓄电池备份方案（配置1块33安时AGM蓄电池与太阳能控制器），搭配4块5瓦太阳能板供电。
数据采集器设置：
Pakbus地址：110
数据采集器配置为路由器模式（isRouter = True）
CSDC7通信板速率设置为34K
SDC7邻居节点范围：1 - 180
SDC7信标周期：3600
礁上射频网络：RF411无线电模块连接至数据采集器的CSIO端口
无线电设置：
活动接口：数据采集器CSDC
SDC地址：7
通信协议：支持Pakbus协议
无线电网络地址：0
跳频序列：0
电源模式：重试等级为低