1. හැඳින්වීම
The Waveshare TOF (Time of Flight) Laser Range Sensor is a compact and precise distance measurement device. It integrates an embedded MCU and a sophisticated ranging algorithm, enabling accurate measurements up to 5 meters with a resolution of 1mm and an accuracy of ±1.5cm. This sensor supports flexible data output options, including active and query modes, via UART or CAN bus, making it suitable for a wide array of applications.
රූපය 1.1: අවසන්view of the TOF Laser Range Sensor highlighting its key features: optical filter, embedded MCU and algorithm, and cascade ranging capability.
2. Key Features and Capabilities
- ඉහළ නිරවද්යතාව: Offers 1mm resolution and ±1.5cm accuracy, with a standard deviation of <5mm for 0-3m range.
- Short Blind Zone: Capable of measuring distances as close as 1cm, minimizing the blind zone.
- සකස් කළ හැකි ක්ෂේත්රය View (FOV): The FOV is adjustable from 15° to 27°, allowing customization for specific application needs.
- Flexible Communication: Supports both UART and CAN bus interfaces, with two identical ports for versatile connectivity.
- කඳුරැල්ල පරාසය: Multiple sensors can be connected in series (up to 8x via UART, 7x via CAN) with individual ID configuration, enabling data acquisition from all sensors through a single bus.
- Configurable Output: Provides active output and query output modes for data acquisition.
රූපය 2.1: සවිස්තරාත්මක view of the sensor's high accuracy, minimal blind zone, and adjustable field of view.
Figure 2.2: Illustration of cascade ranging capabilities, UART/CAN support, and the user interface of the host computer assistant software.
3. Setup and Hardware Connection
The TOF Laser Range Sensor can be easily integrated with various development boards such as Raspberry Pi and Arduino. Ensure proper power supply and communication line connections as detailed below.
3.1 පින්අවුට් විස්තරය
- VCC: Power supply input (3.7-5.2V)
- ජීඑන්ඩී: බිම
- TX/CAN_L: Transmit (UART) / CAN Low
- RX/CAN_H: Receive (UART) / CAN High
3.2 Connecting with Raspberry Pi
Connect the sensor to your Raspberry Pi's GPIO pins according to the diagram. Ensure the UART or CAN pins are correctly mapped and configured on the Raspberry Pi.
3.3 Connecting with Arduino
For Arduino integration, connect the sensor's pins to the corresponding digital I/O pins on your Arduino board. Pay attention to the voltage levels (3.3V TTL signal level for UART).
Figure 3.1: Detailed hardware connection diagrams for Raspberry Pi and Arduino, including pin assignments and the sensor's outline dimensions in millimeters.
4. ක්රියාකාරිත්වය සහ මෘදුකාංග
The TOF Laser Range Sensor comes with a dedicated Host Computer Assistant Software to facilitate configuration, data monitoring, and analysis. This software provides functionalities such as sensor configuration, waveform monitoring, data analysis, data record and replay, and firmware upgrades.
4.1 Data Output Modes
- ක්රියාකාරී ප්රතිදානය: The sensor continuously outputs ranging data at a set interval.
- විමසුම් ප්රතිදානය: The sensor outputs ranging data only when a query command is received from the host device.
Refer to the software's user guide for detailed instructions on configuring communication parameters (baud rate, sensor ID) and selecting data output modes.
5. යෙදුම්
The versatility and precision of the TOF Laser Range Sensor make it suitable for a variety of applications:
- Common Distance Measuring: Accurate measurement for general purposes.
- Robot Obstacle Avoidance: Essential for autonomous robots to detect and navigate around obstacles.
- Robot Route Planning: Provides data for mapping environments and planning efficient paths.
- Drone Altitude Setting: Enables precise height control for unmanned aerial vehicles.
- Ceiling Detection: Useful in indoor navigation and mapping.
- කාර්මික ස්වයංක්රීයකරණය: For position sensing and object detection in automated systems.
6. පිරිවිතර
Figure 6.1: Detailed technical specifications of the TOF Laser Range Sensor.
| පරාමිතිය | වටිනාකම |
|---|---|
| මිනුම් පරාසය | Short: 0.012-2.18m, Mid: 0.012-3.60m, Long: 0.01-5.00m |
| සාමාන්ය නිරවද්යතාව | Short range: ±1.0cm, std dev <0.3cm Mid range: ±1.0cm, std dev <1.5cm Long range: ±1.5cm, std dev <0.5cm (0-3m), std dev <8cm (3-5m) |
| විභේදනය | 1 මි.මී |
| තරංග ආයාමය | 940nm (Class 1 standard compliant) |
| ක්ෂේත්රයේ View (FOV) | 15°-27° (adjustable) |
| සන්නිවේදන අතුරුමුහුණත | UART (3.3V TTL signal level), CAN (both ports can be used simultaneously) |
| බෝඩ්රේට් | UART: 115200-3000000bps (921600bps by default) CAN: 100000-3000000bps (1000000bps by default) |
| Cascade Support | UART: supports up to 8 cascades CAN: supports up to 7 cascades |
| බල සැපයුම | 3.7-5.2V |
| බලශක්ති පරිභෝජනය | 290mW (UART active output, long-range mode, 5.0V power supply, 58mA current) |
| බර | අවුන්ස 0.444 (දළ වශයෙන් ග්රෑම් 12.6) |
| මානයන් (L×W×H) | 35.58 × 12 × 8.05 මි.මී |
| අයිතම ආදර්ශ අංකය | TOF Laser Range Sensor |
| ASIN | B08F57PXKV |
7. නඩත්තු කිරීම
To ensure the longevity and optimal performance of your TOF Laser Range Sensor, follow these maintenance guidelines:
- පිරිසිදු කිරීම: Gently clean the sensor's optical window with a soft, lint-free cloth. Avoid abrasive materials or harsh chemicals that could scratch the lens.
- හැසිරවීම: Handle the sensor with care to prevent physical damage. Avoid dropping or subjecting it to excessive force.
- ගබඩා: Store the sensor in a dry, dust-free environment when not in use. Protect it from extreme temperatures and humidity.
- බල සැපයුම: Always use a stable and appropriate power supply within the specified voltage පරාසය (3.7-5.2V).
8. දෝශ නිරාකරණය
If you encounter issues with your TOF Laser Range Sensor, consider the following troubleshooting steps:
- දත්ත ප්රතිදානයක් නැත:
- Verify power supply connections and voltage.
- Check communication wiring (TX/RX, CAN_L/CAN_H) for correct polarity and secure connections.
- Ensure the baud rate and communication protocol (UART/CAN) are correctly configured on both the sensor and the host device.
- Confirm the sensor ID is correctly set, especially in cascade mode.
- වැරදි කියවීම්:
- Ensure the sensor's optical window is clean and free from obstructions.
- Check for strong ambient light sources that might interfere with the laser.
- Verify the target surface is suitable for TOF measurement (non-reflective, non-transparent).
- Ensure the sensor is within its specified measuring range.
- මෘදුකාංග සම්බන්ධතා ගැටළු:
- Confirm the correct COM port is selected in the Host Computer Assistant Software.
- වෙනත් කිසිදු මෘදුකාංගයක් එකම COM port එක භාවිතා නොකරන බවට වග බලා ගන්න.
- Reinstall the necessary drivers for your USB-to-UART/CAN converter, if applicable.
If problems persist, refer to the official Waveshare documentation or contact technical support.
9. වගකීම් සහ සහාය
This Waveshare TOF Laser Range Sensor is manufactured by Waveshare. For technical support, product inquiries, or warranty information, please visit the official Waveshare webඅඩවියට පිවිසෙන්න හෝ ඔවුන්ගේ සහාය නාලිකා අමතන්න.
නිෂ්පාදකයා: Waveshare
නිල Webඅඩවිය: www.waveshare.com
Figure 9.1: Product packaging displaying manufacturer information and contact details.
