LRF50VB 50m Single-Point DToF LiDAR Sensor for Industrial Automation, AGV and Traffic Safety Monitoring

TECHNICAL SPECIFICATIONS

(Note: 1. This parameter was measured at 25°C in an indoor environment.
2. This parameter was measured with a 90% reflector in an outdoor environment at 25°C.)

OUTLINE DIMENSION(mm)

PIN INTERFACE

No.	Definition / Wire Color	User Interface
1	GND (Black)	External Power -
2	3.3～5V (Red)	External Power +
3	RX （SDA）(Green)	TX（SDA）
4	TX（SCL） (Yellow)	RX（SCL）

Product Description

The LRF50VB is a single-point LiDAR sensor based on the Direct Time of Flight (DToF) principle, designed for industrial automation, AGV and robot obstacle avoidance, drone altitude control and high-speed traffic safety monitoring. It combines a 50 m maximum measuring range, high update rate and strong ambient light immunity in a very compact, cost-effective module.

The sensor measures from 0.05 m to 50 m on 90% reflectivity targets and from 0.05 m to 20 m on 10% reflectivity surfaces, with a blind zone of 5 cm. Accuracy is ±5 cm below 5 m and 1% of distance from 5–50 m, with a repeatability of ±30 mm and a distance resolution of 1 mm, providing clean, quantitative data for positioning, distance control and safety functions. The maximum measuring frequency is 100 Hz, giving enough temporal resolution for fast-moving AGVs, industrial mechanisms and traffic applications.

To maintain performance in bright environments, the LRF50VB offers ambient light immunity of 10 m @ 60 kLux, supporting reliable operation in strong indoor lighting or daylight conditions. The laser operates at 905 nm and is classified as photobiological safety Class 1, making it suitable for systems that operate around people when integrated correctly. The specified operating temperature range of −20°C to +60°C covers typical indoor factories, logistics centers and many outdoor installations.

Electrically, the module runs from a 3.3–5 V DC supply, with a typical peak current of 70 mA at 5 V, average current around 40 mA and average power consumption of about 0.2 W, which fits well in low-power embedded controllers and mobile platforms. Communication is available over both UART and I²C interfaces. The UART interface uses a default baud rate of 460800 bps (adjustable) with a simple 4-byte output frame: a fixed header 0x5C, two bytes of distance (0–50000, representing 0–50 000 mm, with 50 000 indicating out-of-range) and a checksum byte formed by summing the second to the second-last bytes and inverting the result.

The command set includes functions for reading the serial number and software version, setting and reading the baud rate, configuring the output frequency (supporting 100/50/20/10/1 Hz), switching between UART and I²C modes, and starting or stopping ranging. On the I²C side, the LRF50VB acts as a 7-bit slave at address 0x52, with registers for distance (high and low bytes), laser control, device ID, I²C–UART switching, software version, serial number, slave address and factory reset. This makes it straightforward to integrate the module into MCU and SoC systems that prefer I²C buses.

Mechanically, the LRF50VB is very compact, with dimensions of 18.7 × 11.8 × 13.3 mm and a weight of only 1.3 g, connected via a 4-pin 1.0 mm cable with 10 cm tinned wires. The beam divergence produces a spot diameter of roughly 3 cm at 1 m, 6 cm at 2 m, 15 cm at 5 m, 30 cm at 10 m and 60 cm at 20 m; in practical applications, the target surface should be larger than the spot size to ensure stable measurements, especially at longer distances.

With its 50 m range, 100 Hz update rate, millimetre resolution, dual UART/I²C interfaces, wide supply voltage range and Class 1 eye safety, the LRF50VB is well suited for industrial light curtains, AGV and robot obstacle avoidance, drone altitude and distance control, high-speed measuring stations and safety monitoring points in traffic and industrial automation.