Liang Jun, Du Yu-xiao. Design of Realtime Oxygen Detection System in AC and DC Circuits[J]. 2015, 32(3): 85-90.DOI: 10.3969/j.issn.1007-7162.2015.03.016.
Design of Realtime Oxygen Detection System in AC and DC Circuits
antiinterference and power saving of oxygen system parameters by oximeter
this paper proposes a signal amplification design by using a differential op amp amplifier circuit to enhance the signal to noise ratio and increase signal common mode rejection ratio. And because of the measurement of ambient light interference
a set of ACDC flow separation circuit is also designed which can effectively separate hardware red and infrared light
eliminate the interference of ambient light and improve the working capacity of the system. Meanwhile using differential threshold amount to process oxygen parameters can improve the signal system greatly. Hence the circuit simulation and test results demonstrate the feasibility and reliability of the whole design.