There are three types of columns when flooding or flooded roads will have lights, horns and signal fireworks to alert people.
Mr. Nguyen Duc Thanh (60 years old in Bac Giang) is the author of the invention of flood warning column by signal fireworks . Mr. Thanh's solution with the desire to overcome the limitations of existing flood warning devices is to use radio waves, via SMS or by camera.
The solutions have required a lot of attached systems such as receivers, radio broadcasting equipment information such as marine radios, loudspeaker systems . so the economic cost is high, not timely time. There are times when information is incorrectly reported due to local rain, local flooding in the upstream but it is unlikely that floods in the downstream . So Mr. Thanh's solution is considered more convenient because it depends Each position will have different warnings. Each column costs only a few million.
The author has designed a column with a column-mounted electrical circuit (power source is a solar battery) and installs warning devices . On the warning columns with additional information storage, every time will issue a status warning, water parameters at the position of burying the column. Interested people and managers can look up on computers and smartphones to monitor flooding.
The column is made of metal or non-metal, with a technical box to install the equipment (battery and battery charging system, solar battery, whistle, cannula, conductor, pine storage) believe). Column foot is poured concrete, submerged water mark is taken from the ground at the position to bury the column as a standard to announce flood level.
The warning column works on the principle that, when the water is submerged, the surge water reaches the insulating bars with the contact points attached, which will close the circuit for different level warning devices. Depending on the level of flooded water, the surge will generate different warnings.
When the water recedes, the warning system also reports the depth of flooded water in the opposite direction until the water withdraws completely, the foot of the column does not have water, the system stops reporting. The battery is always charged by the solar battery, dark lights automatically turn on and daytime turns off automatically, the column now acts as a street light.
The solution has recently been awarded with the encouragement of the 2018 Patent Contest by the Ministry of Science and Technology (the National Office of Industrial Property), in coordination with the World Intellectual Property Organization (WIPO). ), The General Department of Korean Intellectual Property (KIPO) organized.