"'Qianlong III' is an autonomous submersible with a high level of intelligence, which is suitable for large-scale exploration, such as mineral resources investigation, deep-sea scientific research, and emergency handling. For example, MH370 shipwreck search can be used for large-scale search with Qianlong series submersibles, and once it is located, it can be salvaged. " Liu Jian, the chief designer of "Qianlong No.3" and a researcher at Shenyang Institute of Automation, Chinese Academy of Sciences, pointed to MengMeng's "Little Yellow Croaker" and said that the four "fins" are four rotatable rudder paddles that "control" forward and backward, float and sink; The tail is equipped with a magnetic detector; "Mouth" is a kind of forward-looking sonar, which can convert the acoustic data collected by submersible into images to identify obstacles and surrounding environment, and then ensure its own safety and normal operation through autonomous rotation and avoidance under the control of the main control computer.
"Qianlong No.3 has been improved on the basis of Qianlong No.2. The biggest breakthrough is that the maximum voyage has been increased from more than 30 hours to 40 hours, and its stability has also been verified. The acceptance expert gave 99.4 points. " Liu Jian said that "Qianlong No.3" can also monitor its own health status in real time and make "judgments" according to different degrees. For small problems, it only records, which is convenient for going back to investigate; When it encounters moderate problems, such as which equipment is broken, it will independently re-plan, temporarily not performing this task, but performing the remaining tasks; Once security issues are involved, it will directly end the task and come back by itself. Source: Science and Technology Daily