APA: Air Pressure Alert Device

Out of air situations present a hazard. They can result in a dangerous emergency ascent, or failure of a diver to reach the surface. A low air pressure alert (APA) device can provide a valuable margin of safety, but careful design is required. The device must be effective. In order for the device to be adopted and success, its ease of use, ergonomics and cost must be attractive in relationship to the probability and severity of the hazard. This proposal results in a small alert device system of moderate cost. The APA will be purposely designed as a safety device that serves as a backup, not replacement, to existing gauges. Featuring strong 360-degree alert light pulses and sound, it uses its wireless transmission technology to also include a “buddy alert” for better dive team coordination (conclusion of dive reminder) and a self-test to confirm operation before a dive.