Underwater Ultrasonic Sensor Module Probe Ultrasound For Depth Distance Measurement Obstacle Avoidance IP68 Range 5 - 200cm

UART Ctrl 8-800cm

€72,95

Underwater Ultrasonic Sensor Module Probe Ultrasound For Depth Distance Measurement Obstacle Avoidance IP68 Range 5 - 200cm

€72,95

Taxes included. Shipping calculated at checkout.

Color UART Ctrl 8-800cm RS485 8-800cm RS485 8-800cm - Tool UART Ctrl 5-800cm RS485 5-800cm - Tool RS485 5-800cm

SPECIFICATIONS

Battery Included: no

Brand Name: Gauselink

DIY Supplies: Electrical

High-concerned chemical: none

Model Number: GL08

Net Weight: 40g

Origin: Mainland China

Semi-finishedproduct: Yes

Type: Other

1. Product Parameters

- Serial No.: GL08
- Product Name: Underwater Ultrasonic Sensor Module
- Working Voltage: 5V DC (+/-5%)
- Model, Range and Output Type:
> GL081MT, 5 ~ 800cm, UART Controlled
> GL081M4, 5 ~ 800cm, RS485
> GL08BT, 8 ~ 800cm, UART Controlled
> GL08B4, 8 ~ 800cm, RS485
- Baud Rate: Max. 115200 bits/second (Adjustable)
- Length of Cable: 500mm (19")
- Protection Level of Housing: IP68 (To work underwater)
- Max. depth underwater: 5 meters
- Color of Housing: Grey
- Working Media: Clean Water
- Ambient Temperature: -15°C ~ 55°C

Refer to table below for more parameters:
① Measurement Range
② Blind Zone
③ Output Type
④ Output Response Time
⑤ Working Voltage
⑥ Standby Current
⑦ Average Working Current
⑧ Accuracy
⑨ Detection Angle

Remarks:
(a) Sensor tested at 30cm below static water surface. Water temperature 20°C. No water flow.
Object is flat and facing the sensor.
(b) Tested at Baud Rate 115200bps. Real-time value read.
(c) Tested at voltage 5V DC, cycle time 100ms.
(d) The same conditions with (a), except that the object is stainless steel tube ø4.2×100cm placed at 0.5m ahead. Angle grade is default Grade 4.

Demo set with ST32 control board is also available. Click the link of photo below for more details.

2. Attractive Features

2.1 High Measurement Accuracy
The sensor module is built in intelligent algorithm that ensures the high accuracy.

2.2 Applicable for Measurements of Water Depth, Water Level, Object Distance in Water

Note: This sensor works only in water, not in air.

2.3 Temperature Compensation
The sensor comes with water temperature compensation function to compensate the impact of changing temperature and sound velocity in water.

2.4 Passed Hydrostatic Test
Simulation in water at depth 5m (16 feet, 51kPa).

2.5 Super fast response time
Baud Rate is settable and up to 115200bps (default)

3. Product Dimensions and Terminals Definition

Unit: mm

Contact us please if you want to customize longer cable.

4. Outputs Introduction

4.1 UART Controlled Output
Baud Rate: 115200 bps
Data bits: 8
Stop bit: 1
Verification: None

When the trigger input pin "RX" receives a trigger pulse with a falling edge or any serial port data, the falling edge will trigger the module to work once, and the output pin "TX" will output one measurement data.
The trigger cycle T₁ must be greater than 18+15 = 33ms.

UART Output Format

Notes:
1) When the sensor with UART output also support Modbus protocol.
2) When the sensor is not in water, but in air, the "distance value" will be 0xFFFD.

4.2 RS485 Output

The protocol for sensor with RS485 output is Modbus RTU. Refer to Section 5 as follows.

5. Modbus Protocol Explanation

5.1 Communication Parameters
Data bits: 8
Stop bit: 1
Parity Check: No.
Default Baud Rate: 115200 bps
Protocol: Modbus-RTU
Verificaiton: CRC-16/Modbus
Sensor Address: 0x01 (default, settable)
Read Code: 0x03
Write Code: 0x06

5.2 Modbus RTU Protocol Parameters and Format

Verification Method: CRC-16 (16 bits)
Address of Sensor as slave: 0x01 (default, changeable)

Communication Format:

5.3 List of Registers

Note: The command interval shall be longer than the register's response time, in order to ensure the data frame is completely received.

5.4 Modbus Communication Examples:
To read processed value:
Host (TX): 01 03 01 00 00 01 85 F6
Client (RX): 01 03 02 02 F2 38 A1
Explanation: Address of sensor is 0x01. Prcessed distance value is 0x 02F2, of which decimal distance is 754mm.

To read real time value:
Host (TX): 01 03 01 01 00 01 D4 36
Client (RX): 01 03 02 02 EF F8 A8
Explanation: Address of sensor is 0x01. Read-time distance value is 0x02EF, of which decimal distance is 751mm.

To change sensor/slave address:
Host (TX): 01 06 02 00 00 05 48 71
Client (RX): 01 06 02 00 00 05 48 71
Explanation: Address of sensor is changed from 0x01to 0x05.

If the address of sensor is forgoten, the broadcast address 0xFF can be used to look up the real address provided that only 1 sensor is connected:
Host (TX): FF 03 02 00 00 01 90 6C
The sensor replies:
(RX): 01 03 02 00 01 79 84
It shows the address of sensor is 0x01. 0xFF is broadcast address.

The adddress change code 0x06 is useful when a host machine controls more than 1 sensor module and each sensor should be assigned with a unique address.

To read/check the current Baud Rate:
Host (TX): 01 03 02 01 00 01 D4 72
Client (RX): 01 03 02 00 09 F8 45
0x0009 indicates the current Baud Rate is 115200bps.

To set the Baud Rate at 2400bps.
Host (TX): 01 06 02 01 00 01 99 B3
Client (RX): 01 06 02 01 00 01 99 B3

Communication Examples of Sensor with RS485 Output:

6. Reference Detection Range at Laboratory

7. Product Applicable Fields

This underwater ultrasonic sensor module can be used in the following fields and not limited to:
1. AI Robots
2. Proximity and Presence Awareness of Objects in Water
3. Distance/Depth Measurement in Water
It supports micro-controller unit (MCU), for Arduino, Raspberry Pi development.

Functional Test in water tank at laboratory

Refer to 4 pictures below.

A - The sensor in water detects a PVC tube Ф75mm in water which is 18.3cm ahead.
B - The sensor detects the sand layer in water which is 5.1cm below.
C - The sensor is measuring the depth between the water surface and sensor. Result: 4.7cm.
D - The sensor detects a flat object in water which is 14.9cm ahead.