This paper proposes an automated control system which is necessary for Lab-on-chip (LOC) applications. The
control system consists of two subsystems. The first subsystem is the signal generator which is required to generate
four out-of-phase signals with phases 0°, 90°, 180° and 270°. The signal generator is based on two Analog Devices
AD9851 Direct Digital Synthesizers (DDS). The second subsystem of the system is the data acquisition system
which is needed to acquire the output signals from the LOC. The data acquisition subsystem is implemented using
Saleae Logic Pro 8. The signal generator provides a bandwidth of 5 MHz with four perfectly synced sinusoidal
signals. The data acquisition also provides the same bandwidth with sampling rate of 50 MS/s. The control interface
for the complete signal is implemented using National Instruments LabVIEW software which automates the whole
system and facilitate further processing on the output signals. |
