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GROUND-MED PROJECT
Data Acquisition Hardware and Software
Anibal T. De Almeida
Andre Quintino Duarte
Coimbra, 25 February 2010
Global Data Acquisition
Septemes les Vallons, France
Sensors
DAQ
FTP
Oradea, Romania
Sensors
DAQ
FTP
Coimbra, Portugal
Sensors
DAQ
FTP
Benedikt, Slovenia
Sensors
DAQ
FTP
Valencia, Spain
Sensors
DAQ
FTP
Barcelona, Spain
Sensors
DAQ
FTP
Padova, Italy
Sensors
DAQ
FTP
Athens, Greece
Sensors
DAQ
FTP
FTP
Server
Single Data Aquisition
Sensors:
- Flow
- Temperature
- Electrical Power
- Thermal Power
- Solar Radiation
DAQ
FTP File
Data
Management
System
DAQ schematic
NI cRIO-9074
•
•
•
•
•
•
•
Processor: 400 MHz RT
Internal Storage: 256MB
DRAM: 128 MB
Ethernet Port(s): 2
Operating Temperature: -20 to 55 C
Number of Slots: 8
NI 9144 expansion chassis to expand I/O module selection beyond 8 slots
4-Port RS485 Serial Module
Overview
The NI 9871 C Series serial module adds
four RS485/RS422 serial ports.
- Maximum baud rates 3.6864 Mbps;
- Maximum cable length 1.2 km.


Electric Power (Carlo Gavazzi);
Thermal Power (Brunata).
NI 9219 - 24-Bit Universal Analog Input
•
250 Vrms channel-to-channel isolation
•
Built-in quarter, half, and full-bridge support
•
Built-in voltage and current excitation
•
Thermocouple, RTD, resistance, voltage, and
current measurements
•
CJC per channel for accurate thermocouple
measurement
•
100 S/s/ch simultaneous inputs (50S/s/ch for
Thermocouple)

LI-COR Pyranometer
NI 9217 – 4-Channel 24-Bit RTD Analog Input
•
250 Vrms channel-to-channel isolation
•
Built-in current excitation
•
RTD measurements
•
High-resolution mode 0.003 ºC


Indoor JUMO PT100;
Outdoor JUMO PT100.
Mandatory Variables I
Category
Variable
Unit
Description
External
Ambient temperature
ºC
External ambient temperature
Troom
ºC
Representative indoor temperature
Compressor Power
kW
Compressor power consumption
Cumulative compressor
electricity consumption
kWh
Indoor
Heat Pump
Building Circuit
TIN CI
ºC
Inlet water temperature at the internal circuit
TOUT CI
ºC
Outlet water temperature at the internal circuit
Flow rate
kg.h
-1
Cumulative water volume
Operating hours
h
Thermal heating/cooling to
the building
kW
Cumulative heating supply to
the building
kWh
Cumulative cooling supply to
the building
kWh
Water flow rate in the internal circuit
Mandatory Variables II
Category
Variable
Unit
Total power of all the fan coils (VSDs?)
kW
Cumulative electricity in all the fan
coils
kWh
Total internal Pump Power (VSDs?)
kW
Cumulative electricity consumption in
internal pumps
kWh
Description
Building Circuit
Internal circulation pumps
Ground Circuit
TIN CE
ºC
Inlet water temperature at the external circuit
TOUT CE
ºC
Outlet water temperature at the external circuit
Flow rate
kg.h
Operating hours
-1
Water flow rate in the external circuit
h
Cumulative water volume
Thermal heating/cooling to the BHE
kW
Cumulative heating supply to the BHE
kWh
Cumulative cooling supply to the BHE
kWh
External Pump Power (With VSDs)
kW
Cumulative electricity consumption in
external pumps
kWh
External circulation pump
Other Variables I
Category
Variable
Unit
Description
External
Solar Radiation
-2
W.m
External solar radiation
Indoor
Temperature of other indoor spaces
Heat Pump
ºC
Needs Communication
Pevap
Bar
Evaporator saturation pressure on the
refrigerant circuit
Pcond
Bar
Condenser saturation pressure on the
refrigerant circuit
Tout cond (liquid subcooling)
ºC
Refrigerant temperature at the outlet of the
condenser (liquid line)
Tout evap (evaporater super heat)
ºC
Refrigerant temperature at the outlet of the
evaporator (superheat)
Tout comp (discharge)
ºC
Refrigerant temperature at compressor outlet
(discharge line)
Other Variables II
Category
Variable
Unit
Description
Building Circuit
10 minutes average water
Temperature exiting Heat Pump
ºC
10 minutes average water
Temperature entering the Heat
Pump
ºC
Power of individual fan coils
W
Differential Pressure – Water
Internal Circuit at the circulating
pump
Bar
Absolute Pressure - Pump
Discharge ???
Bar
10 minutes average water
Temperature exiting Heat Pump
ºC
10 minutes average water
Temperature entering the Heat
Pump
ºC
Differential Pressure - External
Circuit at the circulating pump
Bar
Absolute Pressure - Pump
Discharge ???
Bar
Ground Circuit
Power consumption of one fancoil (or all
fancoils).
Ambient and Room Temperature Sensors
Jumo RTD Indoor / outdoor
temperature sensor (PT100)
- for temperatures from -30
to +80°C (200°C)
- for use in HVAC
- IP20 to IP65 protection
- for 2-wire, 3-wire or 4-wire
connections
- fitted transmitter option 4 –
20mA or 0 – 10V
LI-COR - Solar Radiation Sensor
About 200 €
Li-COR LI200SZ - silicon photovoltaic detector
-Current output, which is directly proportional to solar radiation
-Calibrated against an Eppley Precision Spectral Pyranometer (PSP) under
natural daylight conditions in units of watts per square meter (W m-2)
-Under most conditions of natural daylight, the error is < 5% (2).
-Output - Typically 90 µA per 1000 W m-2
Carlo Gavazzi - Energy Meter
Type EM21 72D
Main Outputs:
• Currents (A);
• Voltages (V);
• Apparent power (VA);
• Active power (W);
• Reactive power (var).
Communication through a RS485 communication port
Compressor, Circulators, Fan Coils, HP Controls (?)
Brunata - Thermal Energy Meter
Overview



Flow meter;
Two Liquid Temperature meters;
RS-485 Communication
•
3
Max. Flow16.5 m/h
(HGP 15);
•
Max. Liquid Temperature 120 ºC (HGP 15).
Thermal Energy Consumption
Tin_ci (C)
Tout_ci (C)
Q (m3.s-1)
Q (W)
Q.t (Wh)
Brunata HGQ
Energy Meters
Brunata – Flow Sensor Technology
• Michael Faraday’s physical
law about induction
• Water is the conductor
• This
principle
allows
for
measuring range better than
1000:1
Brunata – Components of a Heat Meter
• Flow sensor
• 2 temperature sensors
• Calculator with display
Brunata – Calculation of Heat Energy
E – Energy consumed in a period of time;
V – Water volume passing through the meter in same period;
– Average temperature difference between flow and return in
the system;
k – Correction factor for heat enthalpy and the volume mass at
the temperature measured.
Software
Software
Output file
• The data acquired by all these devices will be
processed every minute into a string buffer and
after 10 minutes the last 10 buffered strings will be
updated into a FTP file trough the Internet. To
create this string, the application will also read the
cRIO-9074 board date and time to complete all the
required parameters.
Output file
Data String (1 minute)
Data Buffer (10 minutes)
FTP (Old File)
06/12/2010 0:01;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;no;yes;no;
06/12/2010 0:01;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;no;yes;no;
06/12/2010 0:01;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;no;yes;no;
06/12/2010 0:01;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;no;yes;no;
06/12/2010 0:01;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;no;yes;no;
06/12/2010 0:01;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;no;yes;no;
06/12/2010 0:01;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;no;yes;no;
06/12/2010 0:01;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;no;yes;no;
06/12/2010 0:01;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;no;yes;no;
06/12/2010 0:01;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;no;yes;no;
06/12/2010 0:01;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;no;yes;no;
FTP (New File)