12km laser rangefinder module, Developed based on 1535nm, Glass
Laser
YZT-CJ-1210A
Laser Range Finder Module
Technical Specification
- Overview
The YZT-CJ-1210A Laser Rangefinder is an eye-safe laser rangefinder
within the optoelectronic system, capable of detecting target
distances and transmitting the measured distance to the host
computer via serial communication.
- Structural Composition and Main Performance Indicators
The YZ-CJ-1210A Laser Rangefinder consists of a laser, a
transmission optical system, a reception optical system, and a
control circuit. The main performance characteristics are as
follows:
2.1 Main Function
- Responds to laser ranging commands, enabling single measurement,
continuous
- measurement, and stop measurement;
- Self-check function
- Distance measurement has a gating function
- Multi-target ranging capability;
2.2 Performance
- wavelength:1535nm±5nm；
- Continuous ranging frequency:1~10HzAdjustable；
- Ranging Range: Visibility not less than 15km, relative humidity not
more than 70%,
- diffuse reflection coefficient not less than 0.2, for a 2.3m×2.3m
target; maximum range ≥12000m, minimum range ≤50m;
- Ranging cycle: 10 minutes of continuous ranging (10Hz);
- Ranging Accuracy:≤±3m(RMS)；
- Accuracy Rate:≥98%；
- Ranging resolution:≤30m(Multi Tasks)；
- Emission Aperture: 14.4±1mm, Reception Aperture: 47±1mm
- Power Supply Voltage:DC9V～36V；(Adjustable)
- Power consumption: average power consumption ≤2W (working at 1Hz),
peak power consumption ≤7W, standby power consumption ≤1W;
- Dimension:≤101mm×60mm×70mm；
- Weight:≤260g；
2.3 Interface Description
Communication Interface: RS422, 115200bps, wiring definition as
shown in Table 1;
| Table 1: Wiring Definition for 8P Socket |
| Serial No. | Definition | wire color | Remarks |
| 1 | RS422 RX+ | Brown | RS422 Receive (+) |
| 2 | RS422 RX- | Blue | RS422 Receive (-) |
| 3 | RS422 TX- | Yellow | RS422 Transmit (-) |
| 4 | RS422 TX+ | Purple | RS422 Transmit (+) |
| 5 | GND | White | Communication Interface Ground |
| 6 | +5V | Red | Power Supply |
| 7 | GND | Black | Power Supply Ground |
| 8 | Reserved | Blank | Reserved |
2.4 External Dimensions, Installation Size Requirements
For detailed information, please refer to the product's
three-dimensional envelope and assembly drawing.
Figure 1: Three-dimensional Envelope Diagram
Figure 2: Three-dimensional Diagram of the Rangefinder
2.5 Power Supply Characteristics Requirements
Must meet the requirements for DC power supply characteristics as
specified in GJB181A-2003 section 5.3;
2.6 Ventilation and Cooling Method and Heat Dissipation
Natural Cooling
2.7 Reliability Requirements (Assessed with the System)
MTBF (Mean Time Between Failures): The design specifies a value of
4200 hours, with the lowest acceptable value for design
finalization being 3400 hours.
2.8 Environmental Technical Requirements
2.8.1 High Temperature Requirements::
Operating temperature range: +60°C, maintain temperature for 2
hours; storage temperature range +65°C.
2.8.2 Low Temperature Requirements::
Operating temperature range: -40°C, maintain temperature for 2
hours; storage temperature range -55°C.
2.8.3 Vibration Requirements
Shock and vibration: Capable of withstanding flight vibration and
the shock during takeoff and landing, all equipment can endure the
environmental conditions of automobile transportation. Specific
requirements are as follows:
Vibration: The vibration spectrum is shown in Figure 3 and Table 2.
Figure 3: Vibration Spectrum
Table 2: Vibration Spectrum Values
| Fixed Frequency Vibration | Random Vibration |
| Frequency(HZ) | Peak Acceleration(g) | Frequency(HZ) | Power Spectral Density(g²/HZ) |
| f 1 =12.1 | p 1=0.1 | 10～500 | T1=0.0007 T2=0.006 |
| F 2=24.3 | P 2=0.2 |
The vibration test should be conducted in accordance with the
GJB150.16 A -2009 "Military Equipment Laboratory Environmental Test
Methods Vibration Test" regulations. The requirements for shock are
as follows:
- Vertical axis ≥ 10g,
- Lateral axis ≥ 10g,
- Longitudinal axis ≥ 10g；
The tests should be conducted in accordance with GJB150.18 A -2009,
"Military Equipment Laboratory Environmental Test Methods - Shock
Tests."
- User Precautions
The laser emitted by this rangefinder is 1535nm, which is safe for
human eyes. Although it is an eye-safe wavelength, it is advised
not to look directly into the laser.
When adjusting the parallelism of the optical axis, be sure to
cover the receiving lens to avoid permanent damage to the detector
due to excessively strong echoes.
This rangefinder module is not airtight. Ensure that the relative
humidity of the environment is below 80% and maintain a clean and
sanitary environment to prevent damage to the laser.
The range of the rangefinder is related to atmospheric visibility
and the nature of the target. Range will be reduced in fog, rain,
and sandstorms. Targets like green tree clusters, white walls, and
exposed limestone have better reflectivity and can increase range.
Additionally, increasing the angle of the laser beam to the target
will reduce the range.
Do not emit lasers at highly reflective targets such as glass or
white walls within 20 meters to avoid echo overstrength and damage
to the APD detector.
Do not plug or unplug cables while the device is powered on.
Ensure the correct polarity of the power supply connection to avoid
permanent damage to the equipment.
