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Early warning of flood conditions is vital to avoid any personal safety incidents and to mitigate damage to crops and infrastructure generally.
Careful measurement of upstream river levels assists with predicting flood levels and the timing of flood peaks. Alarm systems which alert key staff allows for better planning and reduces the impact of flood events.
A resilient and redundant telemetry system is crucial for such systems. In flood events local power and local cell tower infrastructure may also be damaged by the flood event. The telemetry systems using satellite infrastructure and systems with independent power systems are the best to ensure the measurement stations survive the flood event.
River level monitoring is routine and can be achieved through various methods, the most common being on float and pulley / shaft encoder instrument at a convenient point inside a stilling well. Unidata’s 6541C is an appropriate instrument for this purpose.
A Neon Remote Terminal or Module can be used at each level monitoring station to read and transmit the river level data to a Neon Server routinely, typically every 5, 10 or 30 minutes. When the data arrives at the Neon Server, it can be viewed on a standard web browser. The data can be checked automatically for any out of limit / any high river level readings and an appropriate alarm action can be set up. Typically a high level could cause an email or a text message to be sent to key staff, and the messages can be set up with escalation processes, if the operation does not acknowledge the alarm. In these circumstances, the alarm will be sent to other staff on a hierarchy basis until one person acknowledges the alarm.
Monitoring stations may also include a camera, low definition image, high definition image or low frame rate video to provide further feedback as to the river conditions.
In flood conditions, primary power often fails, so the river level monitoring instrument and the Neon remote terminal or module should have an independent power source, typically this would be a solar panel and battery, and perhaps a lithium emergency battery as a further power backup.
Consideration should be also given to the choice of communications channel for the Neon Remote Terminal or Module. In flood conditions, cell towers are also at risk of failure. If a cell tower fails in a region, its failure could cause several measurement stations using that cell tower to fail also. A satellite based system eliminates this risk and should be considered for some river measurement stations.
A river measurement station could also be set up for a Neon Remote Terminal or Module to use the cell tower as the primary communications channel and another satellite based channel could be available as a backup to make the system more resilient.
During flood conditions, it is often important to illuminate warning lights / warning signs and or audible alarms. The Neon Remote Terminal or Module can be configured to provide such control functions on local alarm and / or on a command from the Neon Server.
|Options for Application Specific Instruments / Inputs||Unidata Part Number||Description|
|Water Level Instrument||6541C-11||WLI with 500mm Pulley & Alk Batt Metric (Imperial version available)|
|Float||6541F-115||WLI Float - Cylinder 115mm (other options available)|
|Float Line||6541D-M||WLI Beaded Floatline Metric (Imperial version available)|
|Options for Neon Telemetry - NRT / RTU / Field Units||Unidata Part Number||Description|
|Cellular RTU 3G||2013F-AB03||Neon Metering Module 3G with Antenna and Li Battery|
|Cellular RTU 4G||2013F-AB04||Neon Metering Module 4G with Antenna and Li Battery|
|Cellular RTU 3G - Industrial||2016F-AB03||Neon Remote Terminal 3G with Antenna and Li Battery|
|Cellular RTU 4G - Industrial||2016F-AB04||Neon Remote Terminal 4G with Antenna and Li Battery|
|Low Earth Orbit Satellite Globalstar||2015E-AB0||Neon Remote Terminal - Satellite Globalstar Modem with Antenna and three Li Batteries|
|Ethernet||2017E-0B0-1 or 3||NRT Ethernet with single or triple Ethernet Ports|
with three Li Batteries
|Equatorial Orbit Satellite - Inmarsat||2018E-AB0-1 or 3||NRT Ethernet with single or triple Ethernet Ports|
with three Li Batteries
|LCD Display||2500E||NRT LCD Display|
|NRT Field Termination Strip||2103F||2015E,2016F,2017E, and 2018E NRT FTS|
|NRT Firmware Option||2303A-8M||8M Extended Memory Option|
|NRT Firmware Option||2303A-8M-CAM||8M Extended Memory & Serial Camera Option|
|NRT Firmware Option||2303A-CAM||Serial Camera Option|
|Options for Neon Application Software - Customer Server||Unidata Part Number||Description|
|Neon Application Software||2302A||Neon Server Software Licence Incl 5 NAL |
|Neon Application Software||2302A-10||Additional 10 NRT Access Licences|
|Neon Application Software||2302A-20||Additional 20 NRT Access Licences|
|Neon Application Software||2302A-50||Additional 50 NRT Access Licences|
|Options for Neon Application Software - Unidata Server||Unidata Part Number||Description|
|Neon Application Software||2301A||Neon Data Initial Subscription Setup Fee|
|Neon Hosting Service||2301A-01||Neon Data Service Fee for 1-50 NRTs|
|Neon Hosting Service||2301A-02||Neon Data Service Fee for 51-100 NRTs|
|Neon Hosting Service||2301A-10||Neon Data Service Fee Metering|
|Options for Conventional Dataloggers / Field Units||Unidata Part Number||Description|
|Standards Starlogger||6004D-11||Red Logger 512K with Alkaline Battery|
|Display Starlogger||6004D-21||Blue Logger 512K with LCD and Alkaline Battery|
|Prologger||7001D-11||Green Logger 1M with LCD and Alkaline Battery|
|Starlogger Field Termination Strip||6103E||6004D FTS|
|Prologger Field Termination Strip||7100E||7001D FTS|
|Starlog V4 Management Software||6308A-AUE||Starlog V4 Full Licence Key|