AILF U10 User manual

User Manual
UAV Based Laser
Methane Leakage
Detector

2

3
1 READ FIRST
Safety precautions, measuring
principle, technical parameter

4
READ FIRST
1.1 Safety Warning
Please read the following carefully before using this product and make sure it
is operated correctly.
Detection Laser
When the device is turned on, do not look directly or use an optical instru-
ment (such as a telescope or magnifying glass) to observe the laser on the
front of the instrument to avoid burning your eyes!
DANGER
The structure of the equipment is specially designed to connect with DJI un-
manned aerial vehicle. Please connect the equipment to the aircraft reliably
before take-off to avoid the danger caused by accidental falling off of the
equipment.
DANGER
When the device is turned on, do not point the laser at the eyes of other
people or animals. This action may cause accidental injury or damage!
DANGER

5
READ FIRST
Do not attempt to repair or replace the instrument parts yourself! When the
instrument does not work properly or prompts an error message, please
refer to the relevant description of this manual for repair operations, or
contact the manufacturer's technical staff.
CAUTION
When the device is not powered, the pitching portion can be rotated at will.
When the device is powered up, it is strictly forbidden to forcibly turn the
pitching part to avoid damage.
CAUTION

6
READ FIRST
1.2 Functional Description
UAV Based Laser Methane Leakage Detector (U10) is a gas detection device
for remotely measuring methane gas using a drone as a carrier. The device
emits a laser, an invisible infrared laser that measures the concentration per
unit (ppm.m) of methane gas present at a long distance.
1.3 Measuring Principle
“Methane molecules absorb light of a specific wavelength”
—— Molecular Absorption Spectroscopy
“The amount of light absorbed by a transparent medium (methane gas mass)
is proportional to the thickness of the air mass and the concentration of the
air mass”
—— Bill Lambert's law
According to the principle, a beam of a specific wavelength can be used to
penetrate the leaked methane air mass. According to the degree of weaken-
ing of the beam, the concentration of methane passing through the air mass
can be measured, and only the methane is responsive (the only choice).
ReeconLaser beam
Laser
Lens
Detector Reected beam Methane

7
READ FIRST
In the telemetry test, after the emitted beam passes through the leaked me-
thane air mass, it must be reflected by the reflecting surface, and then passed
through the air mass and returned to the detector, so that the instrument can
complete the measurement and output the unit concentration value.
Because the leaked methane air mass drifts with the wind, it is constantly
changing and unevenly distributed in space and time; the distance from the
instrument to the reflector is uncertain, and the thickness of the methane gas
mass is also uncertain. In order to be able to express the concentration values
in this case, the concept of unit concentration (ppm.m) is commonly used in
the industry to mean: methane concentration (ppm) x standard thickness (1
m).

8
READ FIRST
1.4 Unit Concentration（ppm.m）
“ The meaning of 100 ppm.m : to uniformly distribute 100 ppm of methane
gas on a gas mass of 1 m thickness. ”
It can be approximated that the unit concentration is the concentration after
the methane molecules on the straight line (laser detection line) between the
telemeter and the reflection target are uniformly "compressed" or "expanded"
into a region of 1 m thickness.
The instrument has a measured value of 100 ppm.m for a methane agglomer-
ate with a thickness of 5 m and a concentration of 20 ppm on the test line,
which corresponds to the air mass being "compressed" to a thickness of 1 m
and a concentration of 100 ppm.
1 m

9
READ FIRST
1.5 Parameters
Model U10
Measurement object methane (CH4)
Measuring principle Laser absorption spectroscopy
Detection laser Class IIIR
Static detection limit *1 5 ppm.m
Sampling frequency 500KHz
Response time 0.025s
Measuring range 0 ~ 50,000 ppm.m
Maximum distance *2 100m
Working temperature -20 ~ 50 °C
Operating humidity < 90% RH (no condensation)
Volume L155 × W 90 × H 100mm
Weight 520 g
Image sensor 720P, 1/2.8’, 12mm
*1 The static detection limit test condition is: 20 m gypsum reflection surface, static
measurement.
*2 The detection distance is closely related to the reflection condition. The value given
here is the detection distance in the general inspection environment.

10

11
Composition & Maintenance
2 Equipment composition
and maintenance method

12
Composition & Maintenance
2.1 Equipment Composition
[ 1 ] DJI SkyPort [ 4 ] NC
[ 2 ] Alignment camera [ 5 ] Pitch adjustment
[ 3 ] Detecting laser output [ 6 ] Support
2.2 Preparation Before Use
Check the integrity of the equipment and check the appearance of the equip-
ment for damage, contamination and missing. When the equipment is not in
use, it can be stored in a protective box and stored in an environment that is
non-corrosive, has no strong vibration, temperature 0 ~ +40 ° C, and relative
humidity is not more than 90%.

13
Composition & Maintenance
2.3 Maintenance
2.3.1 Routine Maintenance
In order to ensure the good working condition of the equipment, please fol-
low the recommendations below for routine maintenance.
[ 1 ] Cleaning the outer surface
When necessary
[ 2 ] Use special tools to clean the lens
When polluted or periodically
[ 3 ] Clean the Sky Port connector
When the equipment is connected to the plane abnormally
[ 4 ] Stored in a protective box
Long-term use
[ 5 ] Calibration
Device prompt or regular
2.3.2 Optical Lens Maintenance
To clean the optical lens, first use the air blow in the maintenance tool (do not
use the mouth to blow) to clean the surface dust, and then wipe it with a soft
cloth cleaning cloth; if the pollution is serious, you can wipe it with an optical
wipe first, then wipe it. Wipe the mirror cloth, but do not leave water stains.
Do not wipe hard when there is dust on the lens to avoid scratching the lens
or damaging the optical lens.

14

15
Operation
Operation steps of the
device and
3

16
Operation
3.1 Preparation
Install the U10 to the SKYPORT interface of the aircraft. If the M210 is
equipped with a dual pylon, the U10 is installed to the I platform, and the IOS
device is connected to the remote control via the data cable to start the air-
craft and the remote control.
3.2 Disclaimer
iPad™、iPhone™ and iOS™ are products of Apple Inc. of the United States.
They are supported by Apple Inc. of the United States. For instructions, please
refer to the information and documentation provided by Apple Inc. of the
United States.
M200 series aircraft is the product of Shenzhen DJI Innovation Technology
Co., Ltd., and is supported by DJI Innovation. For instructions, please refer to
the materials and documents provided by DJI Innovation.
Alpha (Shandong) Instruments is an Apple-certified application provider that
provides applications based on the iOS platform.
3.3 Operation Interface
acquires the real-time status, equipment configuration and real-time
concentration of the equipment (unmanned aerial vehicle and detection
equipment) through connection with the inspection equipment.

17
Operation
supports real-time drawing of the inspection route, starting with the
identification as “start point”and ending the identification as “end
point”. The application automatically adds an “alarm point” when an
alarm occurs; it supports manual addition of the “attention point”for loca-
tions that require attention. It can also attach photos and text records to
alarms and events of interest.
The function buttons contain functions commonly used during the inspection:
“Start Patrol” , “End Patrol” , “Add Focus” , “Alarm List Edit” ,
“Setup” , “Back to Current Position” . With the "autonomous cruise" .

18
Operation
Operation interface：
[ 1 ] UAV status bar
UAV connection status, error information, etc.
[ 2 ] Detection data display, setting area
Gas concentration display, alarm limit setting
[ 3 ] Main camera screen display
HD camera screen display
[ 4 ] System message bar
System message prompt and error code display
[ 5 ] Flight data
Show current flight altitude, speed, etc.
[ 6 ] Forward obstacle avoidance display
Obstacle avoidance prompt and forward distance display
[ 7 ] Inspection function
Start, end inspection, inspection report and settings, etc.
[ 8 ] Main camera focus adjustment
Step focus adjustment
[ 9 ] Main camera control area
Switch / turn on / end camera and video
[ 10 ] Map display area
Display/record flight path, display alarm points
[ 11 ] Patrol camera display
Patrol equipment comes with camera image display

19
Operation
3.3.1 Concentration Window
[ 1 ] Basic Settings Set alarm line
[ 2 ] Concentration Curve Historical curve, and maximum value
[ 3 ] Alarm Limit User set alarm threshold
[ 4 ] Equipment Type Display the type of connected device
[ 5 ] Real-time Concentration Display the real-time concentration
[ 6 ] Unit ppm or ppm.m
[ 7 ] Laser Intensity Display the real-time laser intensity
[ 8 ] NC
3.3.2 Basic Settings
The back of the concentration window is the basic setting of the device, in-
cluding alarm limit settings, and so on.

20
Operation
3.3.3 System Information
The system message contains two types of message class and alarm class. The
message class prompts the current system status, and the alarm class prompts
the device to make an error.
Please refer to “Appendix 1” of this manual for details.
3.3.4 Function buttons
The function buttons contain functions that are commonly used during the
inspection:
[ 1 ] Start Inspection
Click to start recording routes and alarm points
[ 2 ] End Inspection
Click to end this inspection
[ 3 ] Add attention
Add attention point, add building detection
[ 4 ] Alarm list editing
Hide/show alarm point list, edit list information
[ 5 ] System Configuration
configuration, inspection history, offline map, etc.
[ 6 ] Back to current location
Navigate to the current location
[ 7 ] Autonomous cruise
Set autonomous cruise path and start autonomous cruise