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Optical fiber security signal collecting, conditioning and amplifying circuit

A technology for conditioning amplifying circuits and signal acquisition, applied in the field of communications, can solve the problems of high design cost and complicated circuit installation, and achieve the effect of reducing circuit design costs

Inactive Publication Date: 2017-06-13
BEIJING AEROSPACE YILIAN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an optical fiber security signal acquisition and conditioning amplifier circuit to solve the problem of relatively high installation and design costs of the optical fiber security signal acquisition and conditioning amplifier circuit in the prior art due to the complexity of the circuit

Method used

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  • Optical fiber security signal collecting, conditioning and amplifying circuit

Examples

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Embodiment 1

[0017] Reference figure 1 , Shows a structural block diagram of an optical fiber security signal acquisition and conditioning amplifier circuit according to an embodiment of the present invention.

[0018] An optical fiber security signal acquisition, conditioning and amplifying circuit provided by an embodiment of the present invention includes: a light receiving sub-module 101, a power port 102, a diode 1024, and an amplifying circuit 103; the output 1011 of the light receiving sub-module and the first node of the amplifying circuit 1021 connection, where the amplifying circuit includes a first branch 1022 and a second branch 1023, wherein the first branch 1022 processes the photoelectric signal collected by the optical receiving sub-module 101 to output the AC component of the electrical signal; The circuit 1023 filters the photoelectric signal collected by the optical receiving sub-module 101 and outputs the DC component of the electrical signal; the first node 1021 is connec...

Embodiment 2

[0022] Still refer to figure 1 , Shows a circuit diagram of an optical fiber security signal acquisition and conditioning amplifier circuit according to an embodiment of the present invention.

[0023] An optical fiber security signal acquisition, conditioning and amplifying circuit provided by an embodiment of the present invention includes: an optical receiving sub-module 101, a power port 102, a diode 1024, and an amplifying circuit 103; the output 1011 of the optical receiving sub-module and the first node of the amplifying circuit 1021 connection, where the amplifying circuit includes a first branch 1022 and a second branch 1023, where the first branch 1022 processes the photoelectric signal collected by the optical receiving sub-module 101, and outputs the AC component of the electrical signal; The circuit 1023 filters the photoelectric signal collected by the optical receiving sub-module 101 and outputs the DC component of the electrical signal; the first node 1021 is conn...

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Abstract

The invention provides an optical fiber security signal collecting, conditioning and amplifying circuit. The circuit comprises an optical receiving sub module, a power port, a diode and an amplification circuit; an output end of the optical receiving sub module is connected with a first node of the amplification circuit; the amplification circuit comprises a first branch circuit and a second branch circuit; the second branch circuit filters an optoelectronic signal collected by the optical receiving sub module, and outputs a direct current component of the optoelectronic signal; the first node is connected with the first branch circuit and the second branch circuit respectively; and the first node is connected with a first end of the diode, and a second end of the diode is connected with the power port. The optical fiber security signal collecting, conditioning and amplifying circuit provided by the invention adopts an ROSA (Receiver Optical Subassembly) as a photoelectric converter; a rear side circuit uses a more simplified primary differential voltage amplification circuit; under the condition of realizing the same function as an original circuit, since the amplification circuit is more simplified than the existing amplification circuit, the circuit design cost can be reduced, the circuit installation process can be simplified, and the circuit installation complexity can be reduced.

Description

Technical field [0001] The invention relates to the field of communication technology, in particular to an optical fiber security signal acquisition and conditioning amplifier circuit. Background technique [0002] In recent years, distributed optical fiber sensing has been widely used in many fields due to its small size, light weight, fast response, high precision, dynamic range frame, anti-electromagnetic interference, electrical insulation, and corrosion resistance. At present, optical fiber sensors can detect many physical quantities, such as temperature, stress, displacement, current, acceleration, voltage, etc. Distributed optical fiber vibration sensor is one of them. It uses the characteristics of phase and polarization that are sensitive to vibration when light waves are transmitted in the optical fiber to continuously monitor vibration near the optical fiber in real time. It has a good application prospect and is currently researched in the sensor field. Hot spot. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/45G01H9/00
CPCG01H9/004H03F3/45
Inventor 陈雪松罗红星芮雪
Owner BEIJING AEROSPACE YILIAN TECH DEV