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Finding That Elusive Pot of Goldor
Networking Your Shelter
Rebecca Peltzer & Jennifer Bradley, Polk County – Air Quality
Steve Drevik, Agilaire
Typical Shelter Hardware ComponentsTypical Shelter Hardware ComponentsTypical Shelter Hardware ComponentsTypical Shelter Hardware Components
• Data Acquisition Front End• Data Logger or PC
• Internet Access Device• Wireless IP Modem• DSL / Cable Modem• Satellite
• Router• May be built into Internet
Device
• Analyzers and Samplers • New analyzers are
Ethernet-capable• Most are still serial, but
terminal servers can be used to connect them to a network or a logger
Software ComponentsSoftware ComponentsSoftware ComponentsSoftware Components
• Data Acquisition Software• Connections within the shelter
• Logger to analyzer• External from the main DAS
server• Central DAS to logger• Central DAS to analyzer
• Diagnostic / Remote Control Software
• Any client PC to analyzer
• Specialty Software• Download sampler data
Note that in a networked environment, the location isn’t important to the software
But how do we make the most of all of these options and components?
Our Architecture – A work in progressOur Architecture – A work in progressOur Architecture – A work in progressOur Architecture – A work in progress
• Our Analyzers:2 Model 8832 data loggers2 collocated 49i Ozone1 43i-TLE SO21 48i-TLE CO142i NOx2 collocated PM2.5 BAM-1020 Meterological Station: Wind Speed, Wind Direction, Relative Humidity, Ambient Temperature
• Site is polled over private LAN connection inside the firewall.
• All analyzer connections were retained as analog
• Our analog data system- E-Das Ambient through Agilaire• Problems:
• Limited digital capabilities• 1 ug/m3 error in BAM data• Data limitations
- Teom-only 3 analog outputs
- No metadata
• Thermo i-Series analyzers with ethernet capabilities
• Easy Transition to AirVision• Same hardware• Just a software upgrade
Our Shelter NetworkOur Shelter NetworkOur Shelter NetworkOur Shelter Network
Introduction to Ethernet/ModbusIntroduction to Ethernet/ModbusIntroduction to Ethernet/ModbusIntroduction to Ethernet/Modbus
• Modbus over Ethernet was the ideal choice for the digital communications:• Transmission is error checked• Standardized protocol• Much faster than RS-232 • Easier to troubleshoot with
diagnostic tools built into the 8832 data logger
• Modbus only requires that the data logger knows the following:• Analyzer IP
• we set• Analyzer port
• defined by manufacturer• Register # in analyzer
• from analyzer manual• What destination
channel/parameter in the 8832 / AirVision
• we choose
Digital Programming Digital Programming Digital Programming Digital Programming
• AirVision simplifies the configuration process:
MODBUS• select the analyzer brand and
register you want, and the Modbus control file is automatically downloaded.
Direct Instrument Polling• AirVision can directly download
data• BAM-1020• Teoms
• 3-steps Process:• Open up a connection to
instrument• Send commands to retrieve
data in native format• Run File Import Tool to
import into database
MetadataMetadataMetadataMetadata
• Gives us remote trouble-shooting capability• Collect continuous diagnostic
values• Or on demand only when
there are problems
• Thermo i-series - diagnostic data• Flows• Internal temperatures• Intensity
• BAM-1020• Relative humidity• Average hourly volume• Ambient temperature
BAM-1020: Analog Data IssuesBAM-1020: Analog Data IssuesBAM-1020: Analog Data IssuesBAM-1020: Analog Data Issues
• Difficult data collection to ensure data is reported in the same hour it’s collected:• Standard Average Channel• Average Math Channel• Digitally Timed Event • Contact Closure-clock sync
program
• 1ug/m3 error in analog data
• Manual download of BAM internal data
• Data editing – lengthy process• Adjusting data collected by
data logger to match BAM internal data
HOUR BAM_AVG(ug/m3)
PM25LC(ug/m3)
00:00 24 23
01:00 24 24
02:00 24 24
03:00 24 24
04:00 18 17
05:00 25 25
06:00 24 24
07:00 32 32
08:00 36 35
09:00 41 40
10:00 38 38
11:00 37 37
12:00 30 30
13:00 33 32
14:00 30 30
15:00 28 27
16:00 35 34
17:00 36 36
18:00 38 38
19:00 38 38
20:00 38 38
21:00 36 36
22:00 38 38
23:00 33 32
Average 32 31.3
Max 41 40
Min 18 17
BAM-1020: Digital SolutionBAM-1020: Digital SolutionBAM-1020: Digital SolutionBAM-1020: Digital Solution
• The BAM can be directly polled by AirVision via a terminal server.
• No 1ug/m3 error in digital data
• AirVision runs a File Import Tool to import data:• Stores data in correct hour of
collection• Data is error checked for 3
consecutive hours
• No need for manual data download• Digital data is downloaded
directly from BAM on hourly basis
• Data editing – quick and easy• No More comparing hourly
data collected by logger to data downloaded from BAM
Things you might need to know for your Things you might need to know for your projectproject
Things you might need to know for your Things you might need to know for your projectproject
• Our network architecture from Central to Site to site devices is simplified since everything is on the same network.
• Most of you will have access through another gateway device (wireless IP, cable modem, etc).
• You will need to use Network Address Translation or Port Forwarding settings in your router to direct traffic from WAN side ports to LAN side IP/ports
• We’re scientists, not network experts, so we rely on support from our DAS vendor, Agilaire, to help us with each project, since every shelter network architecture can be unique.
Router / Switch
LAN IP/Port = 192.168.1.4 : 9881
LAN IP/Port = 192.168.1.5 : 3000
WAN IP/Port = 22.33.44.55 : 9000
WAN IP/Port = 22.33.44.55 : 9001
AirVisionHyperterminal,
iPort, etc
Planning Your Project / Avoiding PitfallsPlanning Your Project / Avoiding PitfallsPlanning Your Project / Avoiding PitfallsPlanning Your Project / Avoiding Pitfalls
• Must have correct firmware in BAM-1020• 3.4.3 or newer• Contact Met-One
• Must have Modbus Interface and correct firmware installed on 8832s • 2.14 or greater• Contact Agilaire
• Must have a block of IP addresses available• Each individual analyzer
requires its own address
• All else fails, contact Agilaire