|
DAQStreaming is a revolutionary high-speed data recorder that takes
advantage of advanced software technologies and the high data throughput
of SCSI devices to meet the needs of high-speed, real-time, and sustained
data recording with up to 40 MB/s data throughput.
Some data acquisition applications need to continuously acquire and
store high volumes of data for the off-line processing. However, due to
disk speed limitations and file system overhead, it's virtually impossible
to provide real-time data recording capabilities with data rates over 10
MB/s. Traditionally, proprietary hard disk control card is used to
transfer the acquired data from the DAQ device to the hard drive via a DMA
(path #1) or a front panel connection (path #2). Using current
technologies, data throughput from 60 MB/s to 200 MB/s is achievable using
proprietary data acquisition and hard disk control cards.
ADLINK proposes a revolutionary concept to utilize commercial SCSI
devices and data acquisition cards to make high-speed data recording
affordable. ADLINK's DAQStreaming is a turnkey system integrated with
commercial data acquisition devices, SCSI devices and complete software
architecture to provide a cost-effective solution for high-speed data
recording.
DAQStreaming is equipped with state-of-the-art SCSI storage devices,
including a Ultra-160 SCSI adapter and high-capacity SCSI hard disk(s).
The SCSI drive is assembled in a swappable mobile rack for flexible
capacity expansion. The DAQStreaming default configuration includes one
mobile rack with a 36.7 GB SCSI drive which allows 15 minutes recording
duration at maximum data rate. A fully configured system contains 3 SCSI
mobile racks, each with a 73 GB drive to extended the capacity to 220 GB
for 1.5 hours recording time.
Applications
|
-
Models:
-
DAQStreaming-A1 for burst analog signals
Designed to record burst analog signals,
such as explosion and radar echo. This model is equipped with a
high-speed data acquisition card which provides 4-CH analog input
channel with a 20 MS/s sampling rate. Users can obtain sustained
analog signal recording with the following settings:
-
DAQStreaming-D1 for high speed digital patterns
Designed to record and playback digital
patterns such as GPS and satellite signals. This model is equipped
with a high-speed digital input/output which provides a variety of
configurations and a maximum 20 MHz update rate. Users can obtain
sustained digital pattern recording with the following settings:
-
16-ch record @ 20MHz
-
16-ch playback @ 20MHz
-
32-ch record @ 10MHz
-
32-ch playback @ 10MHz
-
DAQStreaming-S1 for simultaneous analog inputs
Designed to record multi-channel,
phase-related analog signals, such as vibration and sound. This model
is equipped with state-of-art simultaneous data acquisition cards
which provide 8-CH simultaneous analog inputs and a maximum 2 MHz
sampling rate for each channel. Users can obtain sustained analog
signal recording with the following setting:
-
System Configuration:
-
Portable casing
-
14.1" TFT LCD display
-
Built-in keyboard/touchpad
-
Pentium 4 1.6GHz Single Board Computer
-
SCSI Hard Disk Drive: 36.7GB standard, 220GB max
-
CD=ROM
-
10/100 Mbps Ethernet, USB ports, etc.
-
Operating System: Windows 2000
-
Software Architecture:
Software is the core of DAQStreaming since
the 40 MB/s data throughput is achieved by programming precise DMA
operations and direct access to sectors of SCSI drives. In the
DAQStreaming, we define a proprietary file system to avoid the overhead
brought by Windows file system and to efficiently handle acquired data.
We designed a complete software architecture to allow users to easily
record/review data using the recorder/player application, or write a
customized application using the provided API and ActiveX controls.
-
Associated ActiveX Controls:
DAQStreaming also provides a variety of
ActiveX controls to help users build customized applications, including:
-
Stream2DiskX - To access files and
manage the file system.
-
DAQ - To control DAQ devices and
perform data acquisition and recording.
-
Signal Processing - To provide
essential DSP for off-line data processing, such as FFT, windowing,
correlation and so on.
-
User Interface - To visually present
the acquired data.
-
Record /Play:
The easy-to-use recorder/player
application let users record/review the acquired data within just few
mouse clicks. Even without any programming knowledge, users can record
analog or digital data at 40 MB/s, as well as review the acquired data
and perform essential analysis.
|
