Fujitsu launches solution to detect sewer-system flooding due to torrential rain

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Fujitsu Limited and Fujitsu Kyushu Network Technologies Limited have announced the start of sales in Japan of their Sewer System Flood Detection Solution, aimed at reducing the damage from torrential rain and flash floods.

This solution uses a sensor attached within a sewer manhole to collect water-level data, and wireless communications that transmit this data to the cloud every five minutes. The sensor is powered by a thermoelectric converter that turns energy from temperature differentials into electricity. The converter, developed by Fujitsu Kyushu Network Technologies, extends the time between battery replacement from 10 months with the sensor being powered by batteries alone, to five years.

This means that in addition to making it possible to achieve dramatic operating efficiencies, deployment costs are also kept in check as power supply installation is unnecessary. This solution can quickly detect sudden rises in the water level in drainage pipes, enabling rapid measures to limit damage resulting from flooding accompanying locally concentrated downpours. In addition, accumulated water-level data can be useful in evaluating sewer drainage plans and setting system-renovation plans.