LRF200H 200 m Industrial DToF LiDAR Distance Sensor for Port Cranes, Long Conveyors and Tunnel Safety

TECHNICAL SPECIFICATIONS

OUTLINE DIMENSION(mm)

PIN INTERFACE

No.	Definition / Wire Color	User Interface
1	9-36V (Red)	External Power +
2	Power GND (Black)	External Power -
3	Port GND (Yellow)	GND
4	TX (Green)	RX
5	RX (Blue)	TX

Product Description

The LRF200H is a mid-to-long-range industrial LiDAR distance sensor based on the Direct Time of Flight (DToF) principle, designed for demanding applications such as port and bridge cranes, long-belt conveyor safety, tunnel and portal collision avoidance, and positioning of large land transport vehicles. It combines 200 m measuring range, high update rates and a wide 9–36 V DC supply in a compact module that integrates easily into real-time control and monitoring systems.

The LRF200H measures from 0.05 m to 200 m on 90% reflectivity targets and from 0.05 m to 70 m on 10% reflectivity surfaces, with a blind zone of 5 cm. Accuracy is specified as ±10 cm below 10 m and 1% of distance at 10 m and above, while repeatability is ±5 cm below 10 m and ±10 cm at 200 m, with a distance resolution of 1 cm. These characteristics make it suitable for long-span crane positioning, vehicle approach control in yards and tunnels, and long-distance safety margins along conveyors or tracks.

The measuring frequency can be configured between 20 Hz and 10 kHz, with a default of 1 kHz, so engineers can choose between high-speed feedback for dynamic systems and lower-rate monitoring for slower processes. The field of view is about 4 mrad, which keeps the beam sufficiently narrow over hundreds of metres, helping the sensor focus on specific reflectors, structural features or collision targets in long corridors and open yards.

To maintain reliable operation in bright outdoor environments such as ports, mines and highways, the LRF200H offers ambient light immunity up to 100 kLux. It uses a 905 nm laser and is classified as photobiological safety Class 1, making it suitable for fixed installations and mobile machinery when integrated with appropriate mechanical protection and shielding.

Electrically, the module accepts a 9–36 V DC supply, allowing direct connection to common 12 V and 24 V industrial power systems. Peak current is approximately 100 mA, average current about 30 mA, corresponding to an average power consumption of around 0.7 W, which is attractive for distributed nodes and long-distance sensing networks. The communication interfaces include both UART and I²C, providing flexibility for different controllers and PLCs.

On the UART side, the default configuration uses a 460800 bps baud rate (adjustable), 8 data bits, 1 stop bit and no parity. Data is output in a 4-byte little-endian frame: a frame header 0x5C, two bytes of distance (0–65 535 cm, with 65 535 cm indicating out-of-range) and a check byte equal to the inverse of the sum of the middle bytes. Command frames allow reading the serial number, setting and reading the baud rate, reading the software version and adjusting the output frequency via a division value, with the effective frequency calculated as f = 1 000 000 / (division + 1).

On the I²C side, the default 7-bit slave address is 0x33. Registers provide access to distance (high and low bytes), software version, serial number, slave address configuration, factory reset and mode switching between I²C and UART, enabling close integration with MCUs and embedded systems that standardise on I²C buses.

Mechanically, the LRF200H shares a rugged industrial form factor of 33 × 34 × 18 mm and weighs 20±2 g, connected via a 1.25 mm, 5-pin, 50 cm stranded-wire harness for power, grounds and UART lines. For systems using an external optical window, the documentation recommends H-K9L optical glass with a wedge angle tolerance ≤3′, surface roughness Ra ≈ 0.012, an anti-reflection coating optimised for 855–955 nm with ≥99.5% transmittance, and overall transmittance ≥98% after any hydrophobic or hard coatings. The effective aperture should be at least 2 mm smaller than the window’s outer diameter, with at least 1.5 mm clearance to the rangefinder antenna and a thickness of about 2–4 mm, while keeping the air gap below 0.5 mm and aligning the emission axis normal to the window to minimise additional losses.

With its 0.05–200 m range, 1 kHz default measuring frequency, 1 cm resolution, 9–36 V DC supply, 100 kLux ambient light immunity and dual UART/I²C interfaces, the LRF200H is a strong choice for port and bridge crane positioning, long-belt conveyor and transfer-point protection, tunnel and portal collision avoidance, yard and rail-vehicle spacing control, and other long-range industrial safety and monitoring tasks.