Heron Island Sensor Relay Pole 2 (RP2)

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 2. 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 - 120Logger 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

为开展赫伦岛（Heron Island）传感器网络部署项目，该岛潟湖内已安装六根6米高钢制杆体。此类杆体兼具两项功能：其一作为覆盖全潟湖系统的无线网络骨干架构；其二承载安装于杆体自身或从杆体向外延伸的各类传感器。其中编号RP5的杆体还搭载了维萨拉（Vaisala）WXT520型气象站。
本记录对应的是2号传感器中继杆（Sensor Relay Pole 2）。该杆体采用太阳能供电，负责将传感器浮标（Sensor Floats）及其他中继杆采集的数据回传至位于赫伦岛的基站。本系统采用坎贝尔科学（Campbell Scientific）CR1000型数据采集器与RF411扩频无线电收发机完成数据处理与传输路由。此类杆体均可搭载各类传感器，本杆体还安装了一款基于MEA热敏电阻的简易底部安装式热敏电阻。该设备每半年将进行一次维护，并预留未来加装多组新传感器的扩展空间。
该杆体主要承担网络中继功能：采集其他中继杆与传感器浮标的数据，并通过直连或经其他中继杆中转的方式将数据回传至基站。杆体部署间距约为2公里，紧邻岛屿的杆体除外——岛上的基站架设在19米高的塔架之上，因此首批部署的杆体通信覆盖范围更远。单根杆体可实现2公里半径内的无线数据组网，六根杆体协同即可实现整个潟湖的无线覆盖。基站的塔架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，采用镀锌钢制材质；杆顶搭载太阳能供电的集成设备舱，包含太阳能板供电的蓄电池组、Campbell CR1000数据采集器与Campbell RF411无线电收发机。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。当前仅搭载了一款底部安装式MEA热敏电阻，后续将视进度与时机加装更多监测仪器。

供电系统：采用蓄电池备份方案（1 x 33Ahr AGM蓄电池，搭配太阳能充电控制器），搭载4块5瓦太阳能板作为供电来源。

数据采集器配置参数：
- Pakbus地址：120
- 配置为路由器模式（isRouter = True）
- CSDC7通信板速率：34K
- CSDC7邻节点范围：1~180
- CSDC7信标周期：3600
- 礁上RF网络：RF411收发机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
- 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：重试等级：低