The invention discloses a single-
chip microcomputer-based
weak signal frequency and phase automatic detection
system and a detection method thereof. The single-
chip microcomputer-based
weak signal frequency and phase automatic detection
system includes a coupler and a power source module; the coupler is connected with a first-stage amplification circuit, a second-stage amplification circuit, a shaping circuit, a frequency division circuit and a single-
chip microcomputer system sequentially; one end of the single-chip
microcomputer system is connected with a display module and a storage module respectively; the first-stage amplification circuit is connected in series with an amplitude detection circuit which is connected in parallel with the second-stage amplification circuit; one end of the amplitude detection circuit is connected with the single-chip
microcomputer system; the coupler is connected with a phase detection circuit; one end of the phase detection circuit is connected with the single-chip
microcomputer system; and the power source module supplies power for the whole system. According to the single-chip microcomputer-based
weak signal frequency and phase automatic detection system and the detection method thereof of the invention, single-chip
microcomputer control is adopted, and multi-stage amplification technology is utilized, and a
frequency divider and a trigger are combined with each other, and therefore, the detection method can be realized, and high-performance intelligent
signal automatic detection can be realized. The system and method of the invention have the advantages of high
automation degree, high speed, high measurement efficiency, high safety performance and convenient operation.