The Design of an Optical Information Acquisition and Processing System Based on Virtual Instrument
Acquisition and processing weak signal is one of the crucial problems in an optical sensor system. In this essay, we solve the signal processing problem in the optical sensor system by designing a circuit. As for dealing with the big changes in the system, we design a circuit which can not only provide enough amplification but also reduce the saturation problem in which the circuit over-amplify the signal. Furthermore, we developed a data-acquire system using Labview and DAQ card. In the system we developed, we can find out the frequency information of the optical signal quickly and exactly. Besides, the system can solve the saturation problem. The system also has the potential ability in solving problems in other areas.
labview daq agc data-acquisition