Soft Robotic Exosuits Enhance Diver Performance by Reducing Air Consumption
Researchers at the Chinese Academy of Sciences have developed a soft underwater exoskeleton designed to assist leg movements during diving. As TechXplore Engineering reports, the wearable system, known as PEAKED, significantly lowers the physical energy and breathing gas required for underwater activities such as flutter kicking, frog kicking, and walking on the seafloor.
Context from Industry Pulse
The development of the PEAKED exosuit aligns with broader engineering trends focused on specialized robotics for extreme environments. While recent advancements in humanoid robotics, such as Xiaomi’s factory demonstrators, focus on terrestrial manual labor, underwater robotics must prioritize fluid dynamics and pressure resistance. The shift toward soft, compliant structures mirrors efforts in other sectors to create human-robot interfaces that do not impede natural motion. By integrating these systems with standard scuba gear and emergency quick-release mechanisms, researchers are bridging the gap between experimental laboratory robotics and practical maritime tools for industrial and scientific exploration.
"PEAKED reduced respiratory minute volume by 29.77% during flutter kicking, 25.70% during frog kicking and 18.35% during underwater walking."
Engineering teams at the Shenzhen Institute of Advanced Technology have introduced a robotic hip exosuit to address the physical limitations of scuba diving. Moving underwater requires overcoming constant resistance while managing heavy life-support gear, which restricts a diver's duration and range. The new device, according to TechXplore Engineering, provides mechanical assistance for both hip flexion and extension, allowing users to move more efficiently without losing control of their navigation or sensory perception.
The system utilizes a compliant, soft design rather than a rigid frame. This approach enables natural lower-limb motion while providing the necessary force to combat water resistance. Data published in Science Robotics indicates that the technology substantially reduces respiratory minute volume, which is the amount of gas a person breathes per minute. Specifically, the assistance lowered gas consumption by nearly 30 percent during flutter kicking and approximately 26 percent during frog kicking.
Designing these systems required a departure from terrestrial exoskeleton models. TechXplore Engineering notes that buoyancy changes the mechanical requirements of the suit by removing the need to support body weight. However, because water resistance acts against the legs throughout the entire range of motion, the robotic joints must provide bidirectional assistance. The hardware must also be compatible with existing scuba tanks and ballast systems while remaining waterproof under high pressure.
Future iterations of the technology are expected to incorporate personalized assistance and posture stabilization features. By automatically adjusting to individual diver movement patterns and specific task demands, these intelligent systems could transform from simple mechanical aids into integrated wearable robots. This evolution would allow divers to perform more strenuous underwater labor while maintaining physical stability and conserving their limited air supply.
The Industry Pulse Bottom Line
Underwater exosuits represent a significant shift toward gas-efficient diving. By reducing respiratory demands by up to 30 percent, these soft robotic systems could extend mission durations and improve safety for professional divers in demanding maritime environments.