1200m Micro Laser Rangefinder Module(LRF)

Key Features

Semiconductor Laser Technology: Superior reliability, compactness and lower power consumption than traditional time-of-flight (TOF) rangefinders, enabling integration into portable and space-constrained devices.

Product performance index

Module Composition

The main components of the laser rangefinder product are as follows:

a) Receiving and transmitting components;

b) Circuit components;26mm×25mm×13.5mm(L×W×H), the weight is ≤10g±0.5g, and its appearance is shown in Fig.1.

Figure 1 Product Appearance

Structure installation interface

The external dimensions of the mechanical and optical interfaces are shown in Figure 2.

Figure 2 Mechanical and optical interface diagram

Electrical interface

The electrical interface requirements are as follows:

a) Power supply voltage: 3V~5.5V (typical value 3.3V or 5V);

b) Standby power consumption: ≤ 0.8W;

c) Average power consumption: ≤ 1W;

d) The upper computer end achieves cross-linking testing with the distance measuring machine end 0.8WTB-6AB-01 connector (Yueqing Huabao) through the 0.8WTB-6Y-2 connector. The definitions of the power supply and communication port pins on the rangefinder end are shown in Table 1, and the connector pin positions are shown in Figure 3.

Table 2 Definition of Product Electrical Pin

Electrical Connection Diagram

Module Communication

Data

♦ Baud rate: 115200bps;

♦ Single byte transmission format: including 1 start bit, 8 data bits, no check, 1 stop bit, 8bit data is transmitted first in low and then in high;

Protocol

Single ranging command

Note: Send the verification code = byte 3 + byte 4 + byte 5 + byte 6 + byte 7;

Received verification code = byte 1 + byte 2 + byte 3 + byte 4 + byte 5 + byte 6 + byte 7.

Send to the ranging module

The ranging module returns

Status=0, continuous measurement fails; DATA_H=0xFF, DATA_L=0xFF; status=1, continuous measurement succeeds; DATA_H=high byte of the measurement result; DATA_L=low byte of the measurement result.

Freq=0x89, 1Hz for ranging; Freq=0xA9, 2Hz for ranging; Freq=0xB9, 5Hz for ranging; Freq=0xF9 for axis calibration mode (the axis status is sent back once after receiving the axis calibration instruction).

Stop measuring

Send to ranging module:

The ranging module returns:

Status=0, the continuous measurement is failed to be closed; status=1, the continuous measurement is successful to be closed.

Note: The data is returned in hexadecimal, and all the data results will be output by multiplying the real data by 10;

Example: dist=2000.3m, the output data is 20003, which is converted into hexadecimal as 4E23, that is, Data1=0x4E and Data2=0x23.