To prevent entrapment accidents in elevators, Mitsubishi Estate adopted the “YUREMASU” system developed by Mieruka Bosai in 2017, despite their buildings already being designed to withstand even the most severe earthquakes, such as those of magnitude 7. Additionally, they had established a direct seismic information transmission network to share earthquake data between their facilities.
Now, by integrating the Japan Meteorological Agency’s “long-period seismic motion prediction information,” even elevators without long-period control systems can be prepared for such events without requiring elevator renovation.
Specifically, using the prediction information of long-period seismic motion delivered as an emergency earthquake warning from the Japan Meteorological Agency, YUREMASU identifies buildings particularly susceptible to long-period seismic motion. It then sends control signals to those buildings, linking with elevator controls. Elevators are stopped at the nearest floor before the long-period seismic motion arrives, thus preventing entrapment accidents.
Source: Building x IT
https://monoist.itmedia.co.jp/mn/articles/2403/01/news156.html
