Fire alarm notification system for the hearing impalredWhen a large-scale disaster strikes, obtaining many types of disaster information, such as that on damage and disaster countermeasures from the government, is indispensable for enabling individuals to take appropriate action to ensure their safety and that of their families and locality. At present, outdoor speakers connected to the government's disaster-prevention administration radio system and voice broadcasts using individual receivers are the most widely used methods of transmitting such information to the residents of a disaster hit area. However, noise and the distance from receivers may result in information not being heard or being misheard. Such methods have room for improvement because they do not allow residents to save or double-check the information and can make it difficult for information to be conveyed to the hearing impaired.

In response, we are analyzing the current state of the disaster-prevention administration radio system and researching ways to convey disaster information in an accurate and easy-to-understand way. The fruits of our efforts are being collected in the form of a disaster prevention information and document database for residents. For example, when making an announcement about some bridges that cannot be crossed, it would be easier for listeners to understand "there are bridges that cannot be crossed" and then adding the more detailed message "the bridges that are out of service are bridge A, bridge B, and bridge C," instead of saying only, "Bridge A, bridge B, and bridge C are out of service."

We have also developed a fire alarm notification system for those who cannot evacuate on their own and the hearing impaired. At present, we are conducting R&D on making the system available as a receiving terminal system for not only fires, but for other disasters, as well. We are also involved in R&D on alternative means of warning not only the hearing impaired, but also those with other impairments, by means of vibration, light, and smell, in addition to conventional audible means such as bells and sirens.

Fire alaem test using smell