Journal Article: Design of Solar Energy Billboards that can Stand Typhoon
In order to solve the problem of typhoon or strong wind destroy billboards and common billboards now in use are too bulky and money-consuming and also electric energy-consuming, we disclosed in this paper a new kind of solar energy billboards that can stand typhoon or strong wind. The display screen or display board will be rolled up automatically when the wind becomes strong enough. The display screen or display board is controlled by electric motor powered by solar energy. There is a three cups style wind sensor that detect wind speed, the detected signal is sent to single chip microcomputer MSP430 SCM made by the National Semiconductor. When the detected wind speed exceeds the setting threshold, the microcomputer will send signal to motor to roll up the display screen, so there will be hardly any wind pressure on the billboards, so that it can stand firmly in whatever strong wind without being destroyed. The working power of these control system is supplied by solar energy collecting system mounted under the billboards. The billboard is both simple and elegant, it's money-saving, energy-saving, what's more, it can stand any strong wind without harming people.