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2000m Micro Laser Rangefinder Module(LRF)

The STA-W2X miniature laser ranging module uses a 905nm semiconductor laser, which has the characteristics of long range, low power consumption, small size, and eye safety. It is very suitable for integrating small unmanned aerial vehicle pods, handheld night vision devices, thermal imaging and other equipment.

Max range: 2000m
Ranging accuracy: ± 1m
Ranging frequency: 1-3Hz
Weight:10g ±0.5g

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Product Description

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

Order number	Project name	STA-W2X
1	Human eye safety level	Class 3R（IEC 60825-1）
2	laser wave length	905nm
3	Laser divergence Angle	1×6mrad
4	Receive field-of-view angles	~20mrad
5	Launch caliber	Φ10×7.5mm
6	Receive caliber	Φ15×10mm
7	Range range (building)	5~ 20 00m
8	ranging accuracy	±1m
9	measuring frequency	3Hz（5~45m）;0.75~3Hz（45~1200m）1hZ(2000m)
10	Quadrant measurement rate	≥98%
11	false alarm rate	≤1%
12	data interface	UART（TTL_3.3V）
13	service voltage	DC 3~5 V
14	Standby power (Power on down)	≤1mW
15	Work power consumption	≤1.5W
16	weight	10±0.5g
17	Dimensions (LWH)	25×26×13mm
18	working temperature	-40~＋60℃
19	storage temperature	-55~＋65℃
20	lash	1200g, 1ms
21	vibrate	5~50~5Hz, 1 x frequency range / min, 2.5g
22	reliability	MTBF≥1500h
23	start time	≤200ms;

Electrical interface

User electrical interface: UART(TTL_3.3V)

Connector model: FWF08002-S06B13W5M (Tesla connector), line order and specific definition are as follows:

2000m Micro Laser Rangefinder Module Lrf

pin	definition	explain
1	GND	String
2	Power is	Power supply, from 3 to 5 V
3	UART_NC	(empty)
4	UART_TX	Serial port transmitter, TTL_3.3V level
5	UART_RX	Serial port receiving end, with a TTL_3.3V level
6	POWER_ON	Module power switch, TTL_3.3V level; (> 0.7V on, <0.15V off by default)

Product dimensions and installation recommendations

The outer profile dimensions of the STA-W2X ranging module are as follows:

2000m Micro Laser Rangefinder Module Lrf

The centroid position of the STA-W2X ranging module is as follows:

2000m Micro Laser Rangefinder Module Lrf

The recommended installation interface design for the STA-W2X ranging module is as follows:

2000m Micro Laser Rangefinder Module Lrf

The design requirements for window lens coating for STA-W2X ranging module are as follows:

Protocol

1. Communication rate and format

Format standard

Baud rate (bps): 9600 / 14400 / 19200 / 38400 / 57600 / 115200 (default) / 128000 / 230400;
Byte data format: 1 start bit, 8 data bit, 1 stop bit, no check

2. Basic format of sending data packets

Section description	Byte number	Span	Remarks
Frame head	2	0x55, 0xAA	fixed value
Command code	1	0~255	Indicates the control object of the current control command
Data 1	1	0~255
Data 2	1	0~255
Data 3	1	0~255
Data 4	1	0~255
check sum	1	0~255	Checksum is the command code, data 1~4 all bytes of data sum down 8 bits

3. Return the packet basic format

Section description	Byte number	Span	Remarks
Frame head	2	0x55, 0xAA	fixed value
Command code	1	0~255	Indicates the control object of the current control command
Data 1	1	0~255
Data 2	1	0~255
Data 3	1	0~255
Data 4	1	0~255
check sum	1	0~255	Checksum is frame header, command code, data 1~4 all byte data sum down 8 bits

4. Porter rate setting

The available port rates (bps) are 9600, 14400, 19200, 38400, 57600bps, 115200, 128000, 230400, with eight port rates available for setting. The aud rate is effective immediately after setting.

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

Receive check code = byte 1 + byte 2 + byte 3 + byte 4 + byte 5 + byte 6 + byte 7;

Byte 3 (Command): 0x01 —— Set the port rate command;

Byte 7: the specific port rate setting parameters;

Send it to the ranging module:

byte	1	2	3	4	5	6	7	8
description	0x55	0xAA	0x01	0xFF	0xFF	0xFF	0x01	0xFF
Byte 7, byte 8:0x01, 0 xFF —— baud rate 9600bps; 0x02, 0x00 —— baud rate 14400bps; 0x03, 0x01 —— baud rate 19200bps; 0x04, 0x02 —— baud rate 38400bps; 0x05, 0x03 —— baud rate 57600bps; 0x06, 0x04 —— baud rate 115200bps; 0x07, 0x05 —— baud rate 128000bps; 0x08, 0x06 —— baud rate 230400bps;

Range measuring module to return:

byte	1	2	3	4	5	6	7	8
description	0x55	0xAA	0x01	status	0xFF	0xFF	0x01	check code
Status: 0x00 —— baud rate set failed; 0x01 —— baud rate set successfully; Byte 7:0x01 —— baud rate 9600bps; 0x02 —— baud rate 14400bps; 0x03 —— baud rate 19200bps; 0x04 —— baud rate 38400bps; 0x05 —— baud rate 57600bps; 0x06 —— baud rate 115200bps; 0x07 —— baud rate 128000bps; 0x08 —— baud rate 230400bps;

5. single measurement

Send it to the ranging module:

Byte	1	2	3	4	5	6	7	8
Description	0x55	0xAA	0x88	0xFF	0xFF	0xFF	0xFF	check code

Range measuring module to return:

Byte	1	2	3	4	5	6	7	8
Description	0x55	0xAA	0x88	Status	0xFF	DATA_H	DATA_L	check code
Status: Failure of a single 0- —— measurement (DATA _ H = 0 xFF, DATA _ L = 0 xFF); 1 —— Single measurement success (DATA _ H = high byte of measurement result; DATA _ L = low byte of measurement result);

6. Continuous measurement

Send it to the ranging module:

Byte	1	2	3	4	5	6	7	8
Description	0x55	0xAA	0x89	0xFF	0xFF	0xFF	0xFF	check code

Range measuring module to return:

Byte	1	2	3	4	5	6	7	8
Description	0x55	0xAA	0x89	Status	0xFF	DATA_H	DATA_L	check code
Status: 0 —— multiple measurement failures (DATA _ H = 0 xFF, DATA _ L = 0 xFF); 1 —— Multiple measurements were successful (DATA _ H = high byte of measurement result; DATA _ L = low byte of measurement result);

6. Continuous measurement

Send it to the ranging module:

byte	1	2	3	4	5	6	7	8
description	0x55	0xAA	0x8E	0xFF	0xFF	0xFF	0xFF	check code

Range measuring module to return:

byte	1	2	3	4	5	6	7	8
description	0x55	0xAA	0x8E	Status	0xFF	0xFF	0xFF	check code
Status: 0 —— stop multiple measurement failure; 1 —— stop multiple measurement success;