User's Manual

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Copyright © 2014 Sensys Networks, Inc. • ALL RIGHTS RESERVED • P/N 153-240-100-008 Rev C
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MAG2/GR Sensor
Functional Specications
detection technique
3-axismagneticeldsensing
sampling rate
128Hz
programmable
vehicle detection
parameters (mode
B only)
• Z-axisdetectthreshold(mG)
• Z-axisundetectthreshold(mG)
• X-axisundetectthreshold(mG)
• onsetlter(ms)
• holdover(ms)
• auto-recalibrationtimeout(secs)
over-the-air
protocol
SensysNetworksNanoPower(SNP)
protocol(TDMA)
physical layer
protocol
EEE802.15.4PHY
modulation
DirectSequenceSpreadSpectrumOffset
QuadraturePhase-ShiftKeying(DSSS
O-QPSK)
transmit/receive bit
rate
250kbps
frequency band
2405to2480MHz
(ISMunlicensedband)
frequency channels
16
channel bandwidth
2MHz
antenna type
microstrippatchantenna
(mountedbelowtopsurfaceof
sensor)
antenna eld of
view
±60°(azimuth&elevation)
nominal output
power
+3dBm
spurious emissions
• 30-1000MHz:<-36dBm
• 1-12.75GHz:<-30dBm
• 1.8-1.9GHz: <-44dBm
• 5.15-5.3GHz:<-47dBm
typical receive
sensitivity
-101dBm(PER=1%)
saturation (max
input level)
≥10dBm
Sensor Modes
mode application description
B (event)
countstations;
advancedetection
• sendstimestampedON
andOFFdetectionevents
usingcongurabledetection
parameters
• notsupportedbyVSN240-T
E (idle)
statusreporting
disablesmagnetometerandsends
sensorhardwareandsoftware
versioninformation
STOPBAR-#
(presence
detection)
stopbardetection;
rampmanagement
sendstimestampedONandOFF
detectioneventsusing
pre-congureddetection
parameters
•16differentstopbardetectionmodescanbeselected
•recommendedstopbardetectionmodesforspecic
applications:
STOPBAR-0 bicycles/scooters
STOPBAR-2 motorcycles
STOPBAR-5
passengervehicles
(normalrecalibration)
STOPBAR-7
passengervehicles
(fastrecalibration)
STOPBAR-14 lightrail
Power, Physical, & Environment
power supply
• non-replaceableprimaryLi-SOCl
2
3.6vbattery
pack
• 8.5Ah(nominalcapacity)
dimensions
2.9”x2.9”x2.2”(7.4cmx7.4cmx5.6cm)
weight
0.47lbs/0.213kg(withoutshell)
environmental
• designedforin-pavementmounting
• NEMAType6Penclosure
• IP68ingressprotection
operating temp
-40ºFto176ºF/-40ºCto+85ºC
Compliance
safety
2006/95/EC
EMC
• FCC:ThisdevicecomplieswithPart15oftheFCCrules.Operationissubjecttothefollowingtwoconditions:(1)
Thisdevicemaynotcauseharmfulinterference,and(2)thisdevicemustacceptanyinterferencereceived,including
interferencethatmaycauseundesiredoperation.Changesormodicationsnotexpresslyapprovedbytheparty
responsibleforcompliancecouldvoidtheuser’sauthoritytooperatetheequipment.
• CE0678
• 2004/108/EC