Article source: Newpelican
The efficiency of life-saving equipment used in a drowning situation can come down to a matter of seconds and possibly life or death. Technology and response times are improving and continual technological advances are making the water a bit safer.
The H2O Rescue-Dolphin1, has the ability to both, cut through waves and, more importantly, the lift and buoyancy to carry victims back to safety.
Ran Zhang, has been involved in products for high-end industrial applications as well as government contracts. The primary focus of his high-end services has been in designing unmanned surface vehicles, optimizing data collection and auto-piloting systems for the marine industry. His company holds over 92 patents.
Zhang said the reason the Dolphin 1 Lifebuoy was developed was that they wanted to “push an intelligent life-saving device to other countries to benefit people’s lives and make the world better.” They did it using their knowledge of remote control, propulsion and battery advances.
While the Dolphin 1 Lifebuoy can be used in ocean rescues or on oil/gas platforms, Zhang said its lower price point and portability make it affordable for boat owners and possibly surfers.
The best example of the lifebuoy’s use is in a potential drowning.
Traditionally a person would use a life-saving buoy. But many times, either from a boat or shore, the buoy is thrown in high water, “In most cases, you cannot reach the victim,” he said.
Compared to a conventional lifebuoy, the Dolphin can be thrown in the water and launched very fast. Through the research and development process, Zhang and his engineers were diligent in creating high buoyancy in the PE [Polyethylene] plastic design.
The Dolphin has a buoyancy of 70 pounds which is very high. To understand this metric, it is important to understand that a 125-pound person only weighs six pounds in the water.
By this extension, the Dolphin can sustain and propel to safety three full-size people. But this requires a degree of power.
Zhang said that “for the battery power, we had to keep the balance” which means equilibrium of thrust and consistency.
In their first prototype, the endurance of the battery was one hour. But it made the lifebuoy too heavy.
By reducing the battery life to 30 minutes, the weight of the Dolphin 1 went to 30 pounds making it much leaner.
While Zhang admits the battery life is not enough for multiple rescue tasks, it has big power, 1.8 kilowatts. At full power, when used, the velocity is 6.5 feet per second barring heavy wave resistance. “So it can bring the victim to safety in a very short time,” he said.