JIOPTICS® 15km Laser Range Finder Module Technical parameter
Item
|
technical parameter
|
Instruction
|
Working wavelength
|
1535±5nm
|
Ranging capability
|
50-15km
|
Ranging range
|
50m~8km
|
2.3m×2.3m vehicle target, 0.3 diffuse reflectance, visibility ≥10km;
|
50m~15km
|
Energy intensity ≥ 20km, 0.3 large reflectivity target;
|
Ranging accuracy
|
±2m
|
3δ
|
Ranging frequency
|
1~10Hz adjustable
|
|
Accuracy rate
|
≥98%
|
|
Divergence angle
|
≤0.5mrad
|
|
Receiving caliber
|
40mm
|
|
Communication Interface
|
RS422
|
|
Voltage
|
DC18~32V
|
|
Working power consumption
|
≤1.2W(@1hz)
|
Normal temperature test
|
|
≤0.5W
|
Normal temperature test
|
Size
|
≤79mm×66mm×46mm
|
|
Weight
|
≤120g
|
|
Structure installation interface
External Interface
Connector model: MDC1-15SW1
|
Pin number
|
Definition
|
Function
|
Remark
|
1
|
VEE
|
power input positive
|
DC9-36V
|
2
|
GND
|
power input ground
|
|
3
|
RS422_T/R+
|
RS485+/RS422 send positive
|
|
4
|
RS422_T/R-
|
RS485+/RS422 send nagative
|
|
5
|
RS422_RXD-
|
RS422 receive negative
|
|
6
|
RS422_RXD+
|
RS422 receive positive
|
|
7
|
RS232-TX
|
RS232 send
|
|
8
|
RS232-RX
|
RS232 take over
|
|
9
|
TTL-TX
|
TTL send
|
3.3V
|
10
|
TTL-RX
|
TTL take over
|
3.3V
|
11
|
GND
|
place of communication
|
|
12
|
NC
|
Alternate
|
|
13
|
NC
|
Alternate
|
|
14
|
NC
|
Alternate
|
|
15
|
NC
|
Alternate
|
|
Environmental adaptability
a) working temperature:-40℃~+60℃。
b) Storage temperature:-45℃~+70℃。
C) Random vibration: 15~2000Hz, 3 directions. The specific test conditions are shown in Table
Table 1 Random vibration test conditions
Serial number
|
Frequency range (Hz)
|
Acceleration spectral density (g2/Hz)
|
Vibration time (min)
|
1
|
15~190
|
0.01
|
Vibration in every direction 15 min
|
2
|
190~210
|
0.1
|
3
|
210~380
|
0.01
|
4
|
380~420
|
0.025
|
5
|
420~2000
|
0.01
|
OEM/ODM ranging modules and custom solutions
The M0815X is designed for system integrators looking for a convenient, powerful and compact laser ranging solution. It provides reliable performance in a wide range of applications.
It is very small, ultra-light, has low power consumption and can be measured over a long distance. It is suitable for handheld devices (thermal imaging), weapon mounting applications, portable systems and lightweight sensor suites and unmanned aerial vehicles or UGVs.
Calculation of ranging ability
(1)Targets and condition requirements
Visibility≥10km
Humidity≤80%
For vehicles with 2.3m×2.3m dimension
Reflectivity=0.3
Ranging ability≥8km
(2)Analysis and verification
The main parameters that affect ranging ability are peak power of lasers, divergence angle, transmitting and receiving transmittance, wavelength of laser, etc.
For this laser rangefinder, it takes≥50kw peak power of lasers, 0.3mrad divergence angle, 1535nm wavelength, transmitting transmittance≥90%, receiving transmittance≥80% and 40mm receiving aperture.
It is a laser rangefinder for small targets, ranging ability can be calculated by the following formula. Ranging formula for small targets:
: Detectable optical power
: Transmitting power of laser rangefinder(50kw)
: Transmitting transmittance(0.9)
: Receiving transmittance(0.8)
: Optical receiving area(40mm receiving aperture)
: Effective reflection area of targets(5.29㎡)
: Target reflectivity(0.3)
: Atmosphere attenuation coefficient(0.16)
: Visibility(according to testing condition)
: Distance to targets
As long as detectable optical power that reflected by targets is larger than minimum detectable power, a laser rangefinder is able to range distance to a target. For a laser rangefinder with 1535nm wavelength, generally, the minimum detectable power(M.D.S) of APD is 5×10-9W.
Under 10km visibility with 10km distance to targets, the minimum detectable power is lower than M.D.S of APD(5×10-9W), therefore, under a condition with 8km visibility, a laser rangefinder can range distance for (2.3m×2.3m) targets up to 9~10km(might be close or less than 10km).
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