Five-Beam Underwater Obstacle Avoidance Sensor
Measurement principle
During the distance measurement process, ultrasonic signals are emitted by an ultrasonic probe, reflected by liquids or other solid media, and then returned. The same probe receives these reflected signals. By measuring the time difference between the emission and reception of the ultrasonic waves, level measurement is achieved. The relationship between the ultrasonic transmission distance L, sound velocity v, and ultrasonic transmission time t can be expressed by the formula:
The basic calculation formula for ultrasonic ranging is as follows:L = (v × t) / 2
L: Distance from the ultrasonic probe to the measured material surface. Unit: meter (m);
v: Sound velocity value after temperature compensation. Unit: meter per second (m/s);
t: Travel time of the sound wave within the measurement range. Unit: second (s)
Product Description
The Five-Beam Underwater Obstacle Avoidance Sensor is a multi-beam ultrasonic ranging sensor developed based on the self-transmitting and self-receiving ranging principle of ultrasonic waves. It adopts a round-robin testing method of “five transmissions and one reception” implemented by internal software, which enables ranging in five directions. Through the coordinated testing of these five directions, the functions of underwater obstacle avoidance and underwater ranging are achieved. The sensor can store the detected data in the internal chip register, communicate with the host computer via the Modbus protocol, and support the adjustment of the sensor’s passive upload and active upload modes.
Technical Specifications
| General Parameters | |
|---|---|
| Blind Area | < 200 mm |
| Detection Range | 200 - 5000 mm |
| Transducer Frequency | Approximately 400 kHz |
| Electrical Characteristics | |
| Working Voltage | 10.8 VDC - 26.4 VDC, with reverse polarity protection |
| No-load Current | ≤ 30 mA |
| Voltage Drop | ≤ 2.5 V |
| Start-up Delay | < 1000 ms |
| Output Characteristics | |
| Output Type | Standard TTL output (Modbus-RTU protocol) |
| Rated Working Current \(I_e\) | ≤ 60 mA (24 V), with short-circuit/overload protection |
| Repeatability Error | ± 0.5% |
| Accuracy | ± 0.5% |
| Ambient Temperature | |
| Working Temperature | -20 - 60 °C |
| Storage Temperature | -20 - 60 °C |
| Mechanical Characteristics | |
| Output Connection Method | GX12 4-core connector (cable connection) |
| Sensor Fixing Thread | M6×20 (length adjustable according to bracket) |
| Protection Class | Sensor: IP68, Pressure Resistance: 1.5 MPa |
| Mass | Approximately 300 g |
| Material | Sensor Housing: PC |
| Compliance with Standards | |
| Standard | GB/T 14048.10 - 2016 |
Product Features
- Five-channel round-robin testing
- Fast response speed and high precision
- Transducer protection class IP68, with water pressure resistance up to 150m
- Equipped with TTL communication, enabling data reading and modification
- Four-pin aviation connector for easy installation
- Wide voltage input: 10.8VDC～4VDC (different voltages affect the ranging distance)
Product Applications
| General Parameters | |
|---|---|
| Blind Area | < 200 mm |
| Detection Range | 200 - 5000 mm |
| Transducer Frequency | Approximately 400 kHz |
| Electrical Characteristics | |
| Working Voltage | 10.8 VDC - 26.4 VDC, with reverse polarity protection |
| No-load Current | ≤ 30 mA |
| Voltage Drop | ≤ 2.5 V |
| Start-up Delay | < 1000 ms |
| Output Characteristics | |
| Output Type | Standard TTL output (Modbus-RTU protocol) |
| Rated Working Current \(I_e\) | ≤ 60 mA (24 V), with short-circuit/overload protection |
| Repeatability Error | ± 0.5% |
| Accuracy | ± 0.5% |
| Ambient Temperature | |
| Working Temperature | -20 - 60 °C |
| Storage Temperature | -20 - 60 °C |
| Mechanical Characteristics | |
| Output Connection Method | GX12 4-core connector (cable connection) |
| Sensor Fixing Thread | M6×20 (length adjustable according to bracket) |
| Protection Class | Sensor: IP68, Pressure Resistance: 1.5 MPa |
| Mass | Approximately 300 g |
| Material | Sensor Housing: PC |
| Compliance with Standards | |
| Standard | GB/T 14048.10 - 2016 |
