Distributed Acoustic Sensing (DAS) thev naus laus zis siv cov theem ntawm coherent rov qab-scattered Rayleigh lub teeb es tsis yog lub teeb siv lub teeb pom kev los xyuas lub suab lossis kev co hauv lub suab ntau yam; Tsis tsuas yog siv cov theem amplitude los muab cov ntaub ntawv siv ntawm lub suab lossis kev co. Cov xwm txheej, tab sis kuj yog qhov kev ntsuas qhov ntsuas qhov sib npaug tuaj yeem siv tau kom tau txais cov ntaub ntawv theem thiab zaus ntawm lub suab lossis kev co.
Optical Specifications
|
Parameter |
Min |
Ntaus. |
Max |
Chav tsev |
Lus ceeb toom |
|
Kev paub Nyob deb |
40 |
40 |
km |
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|
Sov nce Sijhawm |
15 |
Min |
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|
UNL/EDFA |
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|
Central Wavelength |
- |
1550.12 |
- |
nm |
|
|
Linewidth |
- |
- |
3 |
KHz |
SM laser txiav |
|
Pulse Dav |
60 |
100 |
- |
ns |
|
|
Rov ua dua Ntau zaus |
- |
10 |
20 |
KHz |
|
|
mem tes Peak Optical Povua |
23 |
30 |
dBm ib |
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|
AOM |
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Rise/Down Sijhawm |
- |
- |
30 |
ns |
Tsav tsheb built-in |
|
Tswv yim Impedance |
50 |
Ohm |
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|
Hloov Ntau zaus |
80 |
MHz |
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|
BPD |
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Lub wavelength |
800~ 1700 |
nm |
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Tau txais |
30K |
V/A |
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|
Kev sib txuas Hom |
AC |
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Bandwidth ntawm Output Teeb liab |
100 |
MHz |
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Nthuav Channel |
Ib leeg-channel |
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Modulation Hom |
Sab nraud Modulation |
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Optical Structure
|
Parameter |
Min. |
Ntaus. |
Max. |
Chav tsev |
|
Ua hauj lwm kub ntau yam |
- 15 |
25 |
55 |
degree |
|
Cia qhov kub thiab txias |
-20 |
- |
70 |
degree |
|
txheeb ze humidity |
5 |
- |
95 |
% |
|
Ua hauj lwm Humidity Range |
10 |
- |
95 |
% |
Ua haujlwm ib puag ncig
Nco tseg 1:Nrog rau qhov kub thiab txias tsis muaj cua ib puag ncig, chav tsev tuaj yeem ua haujlwm ib txwm rau 2h.
Lus Cim 2:Thaum kuaj los yog siv lub tsev, nws yog ib qho tsim nyog yuav tsum tau nruab lub tsev ntawm lub dab dej kub, thiab tswj kom muaj cua zoo kom deb li deb tau, kom tsis txhob overheating cuam tshuam rau kev ua haujlwm ntawm cov khoom. Nws raug nquahu kom nruab lub module rau ntawm lub dab da dej aluminium, thiab qhov ntim ntawm aluminium kub dab dej yuav tsum siab tshaj 2.4 * 10 ^ 5mm³ . Nws raug pom zoo tias 1 hli thermal conductive silicone ncoo los yog roj yuav tsum tau thov ntawm cov txhuas thaiv thiab cov qauv rau cov cua sov dissipation
Hluav taws xob Specifications
|
Parameter |
Min. |
Ntaus. |
Max. |
Chav tsev |
|
Fais fab mov |
11.4 |
12 |
12.6 |
V |
|
Kev siv fais fab |
- |
- |
30 |
W |
|
Ua hauj lwm tam sim no |
- |
1.5 |
2.5 |
A |
Hom Connector
Connector Hom: 691325310004, 4 tus pin / 3.81 spacing / Poj niam connector
Kev sib txuas lus Interface: RS232
Pin txhais
|
Pin |
Lub npe |
Yam ntxwv |
Xim |
Hluav taws xob theem |
Kev piav qhia |
|
1 |
VCC |
Liab |
+12V Zoo ncej ntawm lub hwj chim |
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|
2 |
GND |
Dub |
+12V GND |
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|
3 |
TXD |
O |
Liab |
RS _232 |
RS232 Kev sib txuas lus emitter |
|
4 |
RXD |
I |
Daj |
RS _232 |
RS232 Kev sib txuas lus receiver |
Mechanical Structure
Qhov Loj: L * W * H: 180 * 140 * 30mm
Pigtail
|
Cov khoom |
Specifications |
|
Hom Fiber |
900um kab |
|
Pigtail Ntev (mm) |
1000±10 |
|
Fiber xim |
Dawb |
|
Hom Connector |
FC/APC |
Interface
|
Interface |
Daim ntawv lo |
Kev piav qhia |
Hom interface |
|
Hluav taws xob |
DC +12V |
DC +12V fais fab mov |
Liab kub kub resistant nyiaj plated hlau |
|
GND |
DC zog GND |
Dub kub kub resistant nyiaj plated hlau |
|
|
Kev sib txuas lus |
TSI RS232 |
Kev sib txuas lus Serial |
Poj niam |
|
Qhov taw qhia LED |
LASER |
Pulse laser xwm txheej qhov taw qhia |
Ntsuab Normal/Red Abnormal |
|
Hwj chim |
Lub zog ntsuas |
Ntsuab rau yog qhov qub / Ntsuab tawm yog txawv txav |
|
|
Modulation Input |
SYN IN |
Pulse modulation input TTL siab kuj |
SMA, Poj niam |
|
Fiber interface |
Sensor |
Txuas rau sensing fiber |
1000 ± 10mm; 900um pigtail, FC / APC |
|
SMA interface |
CH1 |
Teeb liab tso zis; 50Ω; AC txuas |
SMA, Poj niam |
Cim npe nrov: das transceiver module, Tuam Tshoj das transceiver module
