Weak light detection device and algorithm applying 5G forward transmission network semi-active system

Abstract

The invention discloses a weak light detection device and algorithm applying a 5G forward transmission network semi-active system. The weak light detection device comprises a TAP-PD probe, a primary amplification circuit, a filter circuit, a secondary amplification circuit and a single-chip microcomputer. And the problems of influence of noise signals on electric signals and influence of an ADC data and optical power conversion algorithm on optical power data precision are effectively solved. An optical signal detected by the TAP-PD probe is converted into an electric signal of the first-stageamplification circuit, and the electric signal is amplified and then transmitted to the filter circuit to filter out a noise signal; electric signals are prevented from being influenced by noise signals; the electric signal is transmitted to the secondary amplification circuit through the filter circuit and then is transmitted to the single chip microcomputer; the single-chip microcomputer uses an external ADC to carry out data acquisition on an electric signal. The 16-bit ADC is used for converting the electric signal into ADC acquisition data according to the relationship between the voltage value of the electric signal and the ADC acquisition data, and the ADC acquisition data is processed by an averaging method and then is used as ADC sampling data, so that the detection precision ofthe TAP-PD probe during detection, especially in the field of weak light, is improved.

Description

technical field [0001] The invention relates to the field of optical signal detection, in particular to a weak light detection device and an algorithm applied to a semi-active system of a 5G fronthaul network. Background technique [0002] In the past two years, with the promotion of 5G technology, semi-active communication in 5G fronthaul network has been widely used, and optical power detection is an important part in semi-active system, and optical power is also used as a judgment condition to guide optical switch switching basis. The existing optical power detection method is to convert the optical power into an electrical signal through a probe, and then amplify the electrical signal through an amplifier circuit, and collect it by the ADC peripheral of the single-chip microcomputer. The single-chip microcomputer converts the data collected by the ADC into The value of the optical power. However, this method first requires a large number of optical splitters and disk f...

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the existing technology, the purpose of the present invention is to provide a weak light detection device and algorithm for the semi-active system of the 5G fronthaul network, which effectively solves the problem of the cost of manpower and material resources, the influence of noise signals on electrical signals, ADC data and optical signals. The impact of the power conversion algorithm on the accuracy of optical power data

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