Dayu Electronics: Differences Between Underwater Communication Sensors and Underwater Obstacle Avoidance Sensors

In underwater robots (ROV) and various underwater operation scenarios, distance measurement and obstacle avoidance are common needs. Many users ask: Can your ultrasonic underwater communication sensor be directly used for distance measurement? In this regard, Dayu Electronics gives a clear answer: Ultrasonic underwater communication sensors cannot directly replace distance measurement sensors.

The design purposes of the two are different. Communication sensors focus on the modulation, demodulation, and transmission of underwater data, with signal processing logic and transmit/receive timing optimized around information encoding and decoding. In contrast, distance measurement sensors (such as obstacle avoidance sensors) calculate distance based on pulse echo time difference, requiring fast refresh, threshold judgment, and stable output. Directly mixing them can lead to inaccurate measurements or even failure to work.

So, if your ROV project needs underwater distance measurement or obstacle avoidance, how should you choose? Dayu Electronics provides two professional approaches:

Approach 1: Develop your own circuit and software

It is recommended to use our DYW-50/200-NA transducer. This transducer features good electroacoustic conversion efficiency and directivity, and can serve as the core acoustic component of a distance measurement system. Users need to design their own transmit/receive circuits, time gain control, and distance calculation algorithms, suitable for teams with certain R&D capabilities.

Approach 2: Choose off-the-shelf distance measurement sensors

For users who want quick integration, it is recommended to directly select the M36 underwater obstacle avoidance sensor or the M80 underwater obstacle avoidance sensor. These two products are specifically designed for platforms such as ROV and AUV, with built-in complete signal processing and output interfaces, enabling plug-and-play obstacle detection and distance output, saving development and debugging time.

Dayu Electronics is always committed to providing accurate and reliable sensing solutions for underwater equipment. Choosing the right product allows your ROV to operate with ease in underwater tasks. If you have any selection questions, please contact our technical team for one-on-one support.