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Smart, realtime, early local flood warning and water level monitoring system. Andel FloodAlert Bollard provides 24/7 local water level monitoring, sending email and SMS alert notifications to users when pre-set water alert levels are breached. Alert levels are calibrated and pre-set for each individual installation.
Bollards are constructed from 100% post-industrial recycled plastic waste which would otherwise go to landfill. Andel FloodAlert Bollard turns the longevity of plastic into an environmentally-friendly, cost-effective and robust solution which is vandal-proof and resistant to weather, UV, chemicals, temperature and moisture.
Each bollard is equipped with a robust, IP67 waterproof ultrasonic LoRaWAN® water level sensor unit. The sensor unit is housed in the bollard cap and mounted to a uPVC waveguide, providing continuous and accurate monitoring of the water level below.
Sensor data is wirelessly captured, stored and displayed on the cloud-based Andel FloodAlert Portal, accessible from any internet-enabled device, providing 24/7 realtime and historic water level data.
Bollards are strategically located to provide maximum warning to users so that when a pre-set threshold is breached, SMS and email flood notifications are sent for timely action to be taken to protect people and properties.
The FloodAlert Portal can connect to an unlimited number of sensor units and users.
Andel FloodAlert Bollard ultrasonic water level sensor is CE Approved and RoHS Compliant.
Andel FloodAlert Bollard sensor units can connect to an existing third-party LoRaWAN® network, a customer’s own LoRaWAN® network, or a dedicated LoRaWAN® Gateway which can be provided and managed by Andel.
As rising water enters the bollard through rows of holes, the system sends alert notifications if the water level breaches each of the three pre-set alarm levels.
Bollards are securely fastened to existing permanent structures with two 4-inch pipe clips, the bollard hanging slightly above the river bed to prevent blockages.
Rising water freely enters the bollard through a series of holes and enters the waveguide where the sensor monitors and records the water level. Any silt or debris naturally falls out of the open base.
Bollards are buried to a depth of 500mm in porous drainage gravel and secured with concrete in such a way that water can still freely enter and drain. The bollard stands approximately one metre above ground level.
Diagram: Alert levels are calibrated and pre-set for each individual installation, alert levels indicated are examples only.
Following a flood risk and ground condition survey, alarm levels are pre-set and calibrated for each installation. Each time an alarm level threshold is breached, users will receive email and SMS warnings of rising water levels.
The web portal is available via any web browser, providing realtime water level data, historical water level data and battery life.
From rest-mode, when the water level in the bollard breaches the first pre-set threshold, the sensor sends an alert and goes into high-vigilance mode, sending more frequent readings. This continues until the water level drops to 10cm below the low alert threshold.
As an optional extra, the FloodAlert Bollard sensor can be enabled to measure internal temperature, internal relative humidity and atmospheric pressure through a breathable IP67 membrane.
