LP20 TOF Laser Ranging Radar Sensor 20m – Drone & Industrial Use
LP20 TOF Laser Ranging Radar Sensor 20m – Drone & Industrial Use
LP20 TOF Pulse Laser Ranging Radar Sensor Module — 20m Range
The LIHTNE LP20 is a high-performance Time-of-Flight (TOF) pulse laser ranging radar sensor module designed for demanding outdoor and industrial applications. Built on the innovative DeTOF solution, the LP20 organically combines the strengths of traditional pulse TOF and phase TOF technologies — delivering both exceptional accuracy and rapid measurement speed even in bright outdoor environments.
Whether you're integrating it into a UAV/drone obstacle avoidance system, an industrial measurement setup, a robotic navigation platform, or a smart traffic/collision avoidance system, the LP20 is engineered to perform reliably across a wide range of scenarios. Made in Mainland China.
Key Features
- Measurement Range: 0.05 – 20 m (@ 90% reflectivity)
- Distance Resolution: 1.5 cm
- Absolute Accuracy: <3 cm (>50% reflectivity) | <5 cm (15–50%) | <7 cm (<15%)
- Adjustable Measurement Frequency: 1 – 4,500 Hz
- Laser Wavelength: 905 nm
- Laser Beam Divergence Angle: 9.3 mrad (0.53°)
- Receiving Field of View: 39.4 mrad (2.26°)
- Protection Rating: IP65 / IP67 — fully weatherproof
- Output Interface: LVTTL level serial port (3.3 V high, 0 V low) — compatible with MCU and ARM serial pins
- Compact & Lightweight: 40 × 40 × 45 mm | 35 g (with connection cable)
- Operating Temperature: -40 °C to +85 °C
Versatile Applications
- 🚁 UAV / Drone fixed-point obstacle avoidance
- 🤖 Robot navigation and obstacle detection
- 🏭 Industrial measurement and material level sensing
- 🚗 Automotive and intelligent traffic collision avoidance
- 🔒 Security monitoring systems
- 📦 Logistics and inventory level measurement
Interface & Setup Guide
The LP20 uses an LVTTL level serial port interface (3.3 V logic). It connects directly to microcontroller or ARM serial pins. Note: It cannot be directly connected to an RS232 level serial port on a PC without a converter.
- Connect a USB-to-TTL (LVTTL) adapter to your PC and install the required USB-to-serial driver.
- Connect the LP20 sensor module to the USB-to-TTL adapter.
- Open the LinePlot evaluation software, select the correct serial port, configure communication parameters, and open the port.
- Click "Start Measurement" — LinePlot will display real-time ranging data for viewing, logging, or further analysis.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | LP20 |
| Measuring Range | 0.05 – 20 m |
| Resolution | 1.5 cm |
| Measurement Frequency | 1 – 4,500 Hz |
| Laser Wavelength | 905 nm |
| Interface | LVTTL Serial (3.3 V) |
| Protection Rating | IP65 / IP67 |
| Dimensions | 40 × 40 × 45 mm |
| Weight | 35 g (with cable) |
| Operating Temperature | -40 °C to +85 °C |
| Origin | Mainland China |
For technical guidance on laser measurement standards and safety classifications, refer to NIST Sensor Science Division.
Frequently Asked Questions
Q: What is the maximum measurement range of the LP20 TOF laser ranging sensor?
A: The LP20 laser ranging radar sensor module offers a maximum measurement range of 20 meters at 90% target reflectivity, with a minimum range of 0.05 m (5 cm). This makes it ideal for UAV obstacle avoidance, industrial measurement, and level sensing applications.
Q: Can the LP20 laser ranging module be used outdoors?
A: Yes. The LP20 is specifically engineered for outdoor performance. It carries an IP65/IP67 weatherproof rating, operates across a wide temperature range (-40 °C to +85 °C), and uses a 905 nm laser wavelength optimized for reliable ranging in bright ambient light conditions.
Q: How do I connect the LP20 sensor to a microcontroller or Raspberry Pi?
A: The LP20 uses an LVTTL level serial port interface (3.3 V logic). It can be connected directly to the serial TX/RX pins of most microcontrollers (MCU) and ARM boards. For PC connection, you will need a USB-to-TTL (LVTTL) adapter. It is not directly compatible with RS232 voltage-level interfaces.
Q: What is the measurement frequency range of the LP20, and can it be adjusted?
A: The LP20 measurement frequency is fully adjustable from 1 Hz up to 4,500 Hz, allowing you to balance update speed and power consumption depending on your specific application — whether slow-scan material level monitoring or high-speed drone obstacle avoidance.