The WLMS is a monitoring equipment geared with ultrasonic sensors that measure the rate of water level. Ultrasonic sensors calculate time interval between sending the signal and receiving the echo to determine water level. Collected data are sent wirelessly, via cellular network, as a text message. Every WLMS has an ASTI-developed arQ, which serves as the mini-computer that intelligently controls all functions and data communications of the station.
The Water Level Monitoring Station (WLMS) aims to aid with critical flood prone areas through flood monitoring and forecasting. The WLMS uses an ultrasonic sensor to measure the rate of change of water level. The sensor calculates the time interval between sending the signal and receiving the echo to determine the water level. The information collected is then transmitted to a central server at a predefined interval via SMS.