The structure of the
distributed
data
acquisition system is shown in Figure 2. As shown in 1, it mainly includes sensor network , data acquisition and transmission subsystem , data aggregation platform, data acquisition system control terminal and other parts .
1
)
Sensor
network
: The
sensor network includes multiple sensors and analog- to- digital conversion devices ,
After
the signal
to be
collected
is sampled , it is converted into a digital signal by analog- to - digital conversion and then sent to the data acquisition and transmission subsystem .
2
)
Data
acquisition
and
transmission
subsystem :
After the
data
set
transmission
subsystem receives the digital signal sent by the sensor network , it is transmitted to the FPGA for data processing . The two subsystems of data acquisition and transmission complete the receiving and processing of instructions through Ethernet communication .
Data
transmission.
3
) Data
aggregation
platform :
The
data
aggregation
platform sends instructions through the Ethernet interface and receives the sampling data of the subsystems . In addition, the data aggregation platform communicates with the data acquisition system control terminal through the Ethernet interface , executes the instructions from the terminal and uploads the sampled data .
４
）
Data
acquisition system
control terminal:
The control terminal of the
data acquisition
system
communicates with the data aggregation platform through Ethernet to complete the control of the entire distributed data collection system , check the working status and check the sample data Analysis and display.
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