Fuzhou Dayu Electronics Underwater Ranging Sensor: Improving the Operating Efficiency of Aquaculture Robots
As the aquaculture industry transforms toward intelligent operations, cage aquaculture robots are gradually becoming core equipment in deep-sea or offshore farming scenarios. These robots are required to perform tasks such as cage inspection, feed dispensing, and biological monitoring. However, their operating environment is complex and variable, especially with dense net structures that are susceptible to deformation from water currents. If a robot collides with the fishing net due to positioning errors or loss of motion control, it could not only damage the equipment but also cause net breakage, leading to economic losses. Traditional cameras or optical sensors are easily obstructed by suspended matter underwater, while ultrasonic ranging technology has become an ideal choice due to its strong penetration capability and environmental adaptability.
The underwater ranging sensor independently developed by Fuzhou Dayu Electronics utilizes a 200kHz high-frequency ultrasonic transducer with a beam angle controlled within 15°, ensuring accurate ranging from 0.2 to 8 meters even in turbid waters. The sensor housing is made of ABS and can withstand pressures up to a depth of 100 meters, meeting the requirements of deep-sea aquaculture.
To address underwater multipath reflection and biological noise interference, the system employs adaptive threshold filtering technology, which effectively identifies genuine ranging signals through echo signal envelope analysis. Additionally, a time-gating mechanism is introduced to suppress clutter interference caused by surface waves.
At the Ningde large yellow croaker deep-sea aquaculture base in Fujian, robots equipped with this system can perform three-dimensional spiral inspections along the cage structure. Field test data from 2023 shows that the sensor maintains a detection accuracy of over 92% in water with visibility below 0.5 meters, successfully reducing the collision accident rate from 17 times per month in traditional modes to 0.3 times per month.
According to statistics from the Zhoushan Fisheries Administration, after the application of this technology:
- Equipment maintenance costs decreased by 63%, saving an average of 280,000 RMB per unit per year
- Cage breakage rate decreased by 79%, reducing escape losses by approximately 1.5 million RMB per year
- Inspection efficiency increased by 3.2 times, with a 45% reduction in labor costs
Ultrasonic ranging technology not only solves the core pain points of underwater robot navigation but also provides a reliable technical foundation for intelligent aquaculture in remote and deep-sea environments. With breakthroughs in 5G underwater communication technology, larger-scale intelligent aquaculture operation clusters can be expected in the future.
If you also need to find an obstacle avoidance sensor for cage aquaculture robots, please feel free to contact Fuzhou Dayu Electronics for one-on-one model selection guidance.