1. Product Overview
The Dragino LDS12-LB/LS is a LoRaWAN LiDAR Time of Flight (ToF) Distance Sensor designed for Internet of Things (IoT) solutions. It accurately measures distances to objects, ranging from 10 centimeters up to 12 meters, utilizing laser induction technology. This sensor is ideal for various applications requiring precise horizontal distance measurement and object detection.
Key Features:
- LoRaWAN 1.0.3 Class A compliant
- Supports multiple frequency bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
- Ultra-low power consumption for extended battery life
- Laser technology for accurate distance detection
- Measurement range: 0.1m to 12m
- Accuracy: ±5cm (0.1-5m), ±1% (5m-12m)
- Field of View (FOV): 3.6°
- Monitors battery level
- Supports Bluetooth v5.1 for local configuration and LoRaWAN for remote configuration
- Wireless Over-The-Air (OTA) firmware updates
- Configurable parameters via AT Commands and Downlink commands
- LDS12-LB: Powered by an 8500mAh Li/SOCl2 battery
- LDS12-LS: Powered by a solar panel with a 3000mAh Li-ion battery
Typical Applications:
- Horizontal distance measurement
- Parking management systems
- Object proximity and presence detection
- Intelligent trash can management systems
- Robot obstacle avoidance
- Automatic control systems
- Sewer monitoring
2. Package Contents
The package typically includes:
- 1 x Dragino LDS12-LB or LDS12-LS LoRaWAN LiDAR Distance Sensor
Please inspect the package upon receipt to ensure all components are present and undamaged.
3. Device Variants
LDS12-LB (Battery Powered)
This model is powered by an internal 8500mAh Li/SOCl2 battery, designed for long-term operation without external power sources. It features an external antenna and a wired LiDAR probe.
LDS12-LS (Solar Powered)
The LDS12-LS variant includes a solar panel and a 3000mAh Li-ion battery, offering continuous power in outdoor environments with sufficient sunlight. It also features an external antenna and a wired LiDAR probe.
4. Setup Instructions
4.1 LoRaWAN Registration
- Each LDS12-LB/LS sensor is pre-loaded with unique keys for LoRaWAN registration.
- Register these keys (DevEUI, AppEUI/JoinEUI, AppKey) with your local LoRaWAN Network Server. Refer to your LoRaWAN Network Server documentation for specific registration procedures.
- Once registered and powered on, the device will automatically attempt to connect to the LoRaWAN network.
4.2 Physical Installation
- Mounting: Securely mount the sensor unit in the desired location using appropriate fasteners. Ensure the unit is stable and protected from excessive vibration.
- Antenna: Attach the external antenna to the sensor unit. Ensure it is tightened securely to optimize signal strength.
- LiDAR Probe Placement: Position the LiDAR probe so that its field of view (3.6°) is unobstructed and directed towards the target object or area for distance measurement. The probe is connected via a 25cm wire.
- LDS12-LS (Solar Panel): For the solar-powered model, ensure the solar panel is positioned to receive maximum direct sunlight throughout the day for optimal charging.
- Environmental Considerations: The enclosure has an IP65 rating, providing protection against dust and water jets. However, avoid submerging the device or exposing it to extreme conditions beyond its operating temperature range.
4.3 Powering On
- LDS12-LB: The device is powered by an internal battery. It should be ready for operation once the antenna is attached and the LiDAR probe is positioned.
- LDS12-LS: The device will power on and begin charging its internal Li-ion battery when the solar panel receives sufficient light.
5. Operating Instructions
5.1 Data Transmission
Once connected to the LoRaWAN network, the sensor will periodically measure the distance and transmit the data to the LoRaWAN IoT Server. The frequency of transmissions can typically be configured via LoRaWAN downlink commands or AT commands.
5.2 Configuration
- Bluetooth (BLE) Configuration: The device supports Bluetooth v5.1 for local configuration. Use a compatible mobile application or tool to connect to the sensor via BLE and adjust parameters.
- AT Commands: Parameters can be changed using AT commands. Refer to the detailed Dragino AT Command manual for specific commands and syntax.
- LoRaWAN Downlink: Remote configuration is possible by sending downlink commands from your LoRaWAN Network Server. This allows for parameter adjustments without physical access to the device.
5.3 Firmware Updates
The LDS12-LB/LS supports wireless Over-The-Air (OTA) firmware updates. This allows for future enhancements and bug fixes to be applied remotely. Follow the instructions provided by Dragino for performing OTA updates.
6. Maintenance
- Cleaning: Periodically clean the LiDAR probe lens to ensure accurate measurements. Use a soft, dry cloth. Avoid abrasive materials or harsh chemicals.
- Battery Monitoring: Monitor the battery level through the LoRaWAN network. For LDS12-LB, plan for battery replacement when levels are critically low. For LDS12-LS, ensure the solar panel is clean and unobstructed for efficient charging.
- Physical Inspection: Regularly check the sensor unit, antenna, and probe for any signs of physical damage, loose connections, or environmental wear.
- Firmware: Keep the device firmware updated to the latest version to benefit from performance improvements and new features.
7. Troubleshooting
- No LoRaWAN Connectivity:
- Verify that the device keys are correctly registered on your LoRaWAN Network Server.
- Ensure the antenna is securely attached.
- Check if the device is within range of a LoRaWAN gateway.
- Confirm the correct frequency band is configured for your region.
- Inaccurate Distance Readings:
- Clean the LiDAR probe lens.
- Ensure the target object is within the specified measurement range and reflectivity.
- Check for any obstructions in the LiDAR probe's field of view.
- Verify the sensor is securely mounted and not subject to movement.
- Battery Depletion (LDS12-LB):
- The Li/SOCl2 battery is un-chargeable. Replace the battery when it reaches end-of-life.
- High transmission frequency or frequent BLE usage can increase power consumption. Adjust settings if necessary.
- Low Battery (LDS12-LS):
- Ensure the solar panel is clean and receiving adequate direct sunlight.
- Check for any shading on the solar panel.
- Verify the solar panel and battery connections are secure.
8. Specifications
| Category | Parameter | Value |
|---|---|---|
| Common DC Characteristics | Supply Voltage | Built-in Battery, 2.5V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C | |
| LiDAR Probe Specification | Storage Temperature | -20°C ~ 75°C |
| Operating Temperature | -20°C ~ 60°C | |
| Measure Distance (90% Reflectivity) | 0.1m ~ 12m | |
| Measure Distance (10% Reflectivity) | 0.1m ~ 4m | |
| Accuracy | ±5cm (0.1-5m), ±1% (5m-12m) | |
| Distance Resolution | 1cm | |
| Ambient Light Immunity | 70klux | |
| Enclosure Rating | IP65 | |
| Light Source | LED | |
| Central Wavelength | 850nm | |
| Field of View (FOV) | 3.6° | |
| LoRa Specification | Frequency Range (Band 1 HF) | 862 ~ 1020 MHz |
| Max RF Output | +22 dBm constant | |
| RX Sensitivity | Down to -139 dBm | |
| Battery (LDS12-LB) | Type | Li/SOCl2 (un-chargeable) |
| Capacity | 8500mAh | |
| Self-Discharge | <1% / Year @ 25°C | |
| Max Continuous Current | 130mA | |
| Max Boost Current | 2A (1 second) | |
| Battery (LDS12-LS) | Type | Solar panel + 3000mAh Li-ion battery |
| Power Consumption | Sleep Mode | 5uA @ 3.3V |
| LoRa Transmit Mode | 125mA @ 20dBm, 82mA @ 14dBm | |
| Physical Characteristics | Package Dimension | 150 x 120 x 55 mm |
| Package Weight | 220g |
9. User Tips
- For optimal LoRaWAN performance, ensure the sensor's antenna has a clear line of sight to the nearest gateway.
- When using the LDS12-LS (solar-powered) model, regularly check that the solar panel is free from dirt, snow, or other obstructions that could reduce charging efficiency.
- Utilize the BLE configuration feature for initial setup and minor adjustments when the device is easily accessible, as it can be quicker than remote LoRaWAN downlink commands.
- Consider the reflectivity of the target surface when evaluating measurement accuracy. Highly reflective surfaces generally yield better results.
10. Warranty and Support
Dragino products typically come with a standard manufacturer's warranty. For specific warranty terms, duration, and to initiate a support request, please refer to the official Dragino website or contact their customer support directly. Ensure you have your product model and serial number available when seeking support.
