Mobile Environmental Monitoring System
Environmental Monitoring
China
Project Introduction:
After years of tremendous growth, Shanghai’s air quality has deteriorated. To monitor the situation, there
were fixed air quality measurement stations around the city, but these proved to give different readings
depending on nearby traffic conditions. The solution was to create a mobile environment monitoring
system using Advantech’s UNO-2050E. With a compact design and reliable operation in vehicles, UNO-
2050E could take on this special environmental monitoring challenge.
System Requirements:
A standard measurement station consisted of an ombrometer to measure rainfall, and analysis equipment
for SO2, NOx, CO, O3 and PM10. The mobile measurement station would need to send data back to a
central monitoring station together with positioning data based on GPS readings. With installation in a
minivan, the system had to be very compact and rugged enough to withstand vibration when the vehicle
was driving.
System Description:
The monitoring system works like a remote data acquisition system, with a wide range of analysis
equipment together with GPRS connectivity, a GPS, and UNO-2050E as the system controller.
With its two isolated RS-485 ports, UNO-2050E connects to two ADAM-4017 analog input modules to
retrieve monitoring data from the measuring equipment, while UNO-2050E digital I/O channels are used to
connect directly with the ombrometer to measure rainfall.
GPS is used to communicate with a satellite and get the position of the vehicle. UNO-2050E connects to
this GPS by one of its RS-232 serial ports, and the other RS-232 serial port connects to a GPRS to transmit
the measurement and position data back to the central monitoring station. UNO-2050E runs Microsoft
Windows CE .NET from a vibration-resistant CompactFlash disk.
Project Implementation:
Conclusion:
Advantech provided a total solution for the mobile environment monitoring system to the customer. UNO-2050E with Embedded
Windows CE .NET was a turnkey solution. Its fanless and compact mechanical design is perfectly suited for installation in a
small vehicle, while its vibration- and shock-resistant design makes it more reliable and durable than common industrial PCs.
The four required communication ports matched UNO-2050E’s specifications, and combined with the ADAM-4017 analog input
module, installing this system was quick and easy.
UNO-2050E satisfies most requirements for analysis equipment because it accepts standard 4-20 mA and 0-5 V signaling.
Equipped with 8 digital input channels, and 8 digital output channels, UNO-2050E can directly connect to various counter-type
analysis equipment for easier control and monitoring.
System Diagram
UNO-2050E
AMD GX2 UNO with 2 x LAN,
2 x RS-232, 2 x Isolated
RS-232/422/485, 16 x Isolated DI/O
ADAM-4017
8-ch Analog Input Module
GPS GPS GPRS / CDPD
Antenna
Monitoring car
GPS
Monitoring Station
ADAM-4017
Ombrometer
GPRS Modem
RS-232
RS-232
RS-485
Satellite
UNO-2050E
20 21
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