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- W4308702470 abstract "In the field of signal detection, the effective acquisition of weak optical signals has always been the focus and difficulty of research, and the importance of photoelectric detection technology in the scientific and technological development and strategic development of various countries has become increasingly prominent. Aiming at the oil spectrometer using photomultiplier tube as optical detector at present, this paper starts with the design scheme of weak optical signal detection circuit, discusses the basic working principle of photoelectric detection circuit, designs the amplification circuit and active filter circuit using AD8628 as preamplifier, and uses programmable instrumentation amplifier for secondary amplification. ALTERA's EP4CE15F23C8N chip is used as the system processor. The data is processed by FIR filtering algorithm on the processor, and finally transmitted to the host computer for display. The hardware circuit of the system has compact structure, high data acquisition resolution and good real-time transmission, and can carry out multi-channel synchronous acquisition. Experiments show that the detection circuit based on this design can effectively measure weak optical signals, and is suitable for the detection of general optical signals and weak optical signals." @default.
- W4308702470 created "2022-11-14" @default.
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- W4308702470 date "2022-11-11" @default.
- W4308702470 modified "2023-09-26" @default.
- W4308702470 title "Design and research of weak optical signal detection system" @default.
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- W4308702470 doi "https://doi.org/10.1117/12.2641324" @default.
- W4308702470 hasPublicationYear "2022" @default.
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