905nm SPD1200M2 Micro Laser Rangefinder Module
DESCRIPTION
With a ranging range of 0.2–1200m, a 2–15Hz UART-TTL output, and ultra-lightweight SWaP (Size, Weight, and Power) advantages—weighing in at just 6g—ERDI’s advanced 905nm core module is the premier choice for thermal imagers and civil drone payloads.
TECHNICAL SPECIFICATIONS
|
No. |
Parameter |
Specification |
|
1 |
Laser Wavelength |
905 nm ± 5 nm |
|
2 |
Laser Beam Divergence |
< 4mrad |
|
3 |
Optical Material |
PMMA |
|
4 |
Receiving Aperture |
5.0mm × 7mm |
|
5 |
Measurement Range |
0.2 m – 1200 m Note: The measurement range may be reduced under strong sunlight or low-visibility conditions. |
|
6 |
Ranging Accuracy |
±0.3m (≤100m) ±0.3m+d*0.7‰ (100m<d<1200m) |
|
7 |
Measurement Frequency |
2 Hz – 15 Hz or 4 Hz – 15 Hz Adaptive |
|
8 |
Measurement Accuracy Rate |
≥ 98% |
|
9 |
False Alarm Rate |
≤ 1% |
|
10 |
Communication Interface |
UART-TTL (Customizable) |
|
11 |
Baud Rate |
Default 115200 bps |
|
12 |
Supply Voltage |
3.3 V – 5 V |
|
13 |
Startup Time |
≤ 200 ms |
|
14 |
Inrush Current |
≈ 380 mA |
|
15 |
Operating Power Consumption |
Average Power Consumption ≈ 0.45 W Maximum Power Consumption ≤ 0.75 W |
|
16 |
Operating Temperature |
-20°C to +60°C |
|
17 |
Storage Temperature |
-30°C to +70°C |
|
18 |
Protection Rating |
IP67 (Inside Lens Cavity) |
|
19 |
Laser Safety Class |
IEC Class I |
|
20 |
Dimensions |
7.7 mm × 15.3 mm × 27.85 mm (Rectangular) |
|
21 |
Weight |
≈ 6 g |
|
22 |
Shock Resistance |
1000 g/ms (10 times/s along optical axis) |
|
23 |
Vibration Resistance |
5–50–5 Hz, 1 octave/min, 2.5 g |
|
24 |
Reliability |
MTBF ≥ 1500 h |
Functional Description
The system supports single measurement and continuous measurement functions.
3.1 Baud Rate Configuration
Allows modification of the serial communication baud rate.
3.2 Single Measurement
Triggers a single distance measurement to the target. For low-reflectivity targets, the system automatically repeats measurements until stable distance data is obtained. The final result is transmitted via the serial interface in the standard data format.
3.3 Continuous Measurement
In continuous measurement mode, the laser module performs repeated distance measurements on the target. The typical refresh rate can be set to 2 Hz, and the maximum refresh rate can reach 15 Hz.
Electrical Interface Definition
|
Pin |
Definition |
Description |
|
1 |
SW-SHOT |
Function Enable (active high) Note: Compatible with active-low control requirements |
|
2 |
RXD |
Signal input port, Host → Ranging Module |
|
3 |
TXD |
Signal output port, Ranging Module → Host |
|
4 |
I/O (Reserved) |
Reserved for expansion |
|
5 |
VCC |
Power + |
|
6 |
GND |
Power − |
Mechanical Interface
