CN210075237U - Light path detection system - Google Patents
Light path detection system Download PDFInfo
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- CN210075237U CN210075237U CN201921091892.5U CN201921091892U CN210075237U CN 210075237 U CN210075237 U CN 210075237U CN 201921091892 U CN201921091892 U CN 201921091892U CN 210075237 U CN210075237 U CN 210075237U
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Abstract
The utility model relates to an optical path detecting system, it includes microprocessor part, stable light source part, light insertion loss/optical power meter test module, light return loss test/light fault point detection module and power module. The effects of low cost and accurate detection result can be realized.
Description
Technical Field
The utility model relates to an optical detection field especially relates to an optical path detecting system
Background
With the development of information technology, requirements for rapidness and wider bandwidth are provided for an optical communication network, and how to ensure accurate, rapid and stable information transmission in optical communication is very important. However, in optical fiber communication, the transmission quality determines the quality of optical communication, and especially in optical line detection, the quality assurance of the whole optical communication plays a very critical role. However, the existing optical path detection system has the technical problems of high price and inaccurate detection effect.
Therefore, it is desirable to provide a cost-effective optical path detection system for fault detection.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical scheme that its technical problem adopted is: it is desirable to provide a cost effective optical path detection system for fault detection.
The utility model adopts the technical proposal that:
an optical path detection system, characterized in that: the optical power meter comprises a microprocessor part, a stable light source part, an optical insertion loss/optical power meter testing module, an optical return loss testing/optical fault point detecting module and a power supply module; the microprocessor comprises a plurality of AD ports, a communication interface, a UART interface, an I/O interface and a power interface; the stable light source part comprises a laser driving unit, a PD backlight control unit, a bias current monitoring unit, a power control unit and a temperature control unit. The PD backlight control unit, the bias current monitoring unit, the power control unit and the temperature control unit are respectively connected to each AD port of the microprocessor; the laser driving unit is connected to an I/O interface of the microprocessor; the stable light source part respectively transmits the light source to the optical insertion loss/optical power meter testing module and the optical return loss testing/optical fault point detecting module through two paths of optical fibers. Wherein, the two paths of optical fibers are respectively connected by an optical coupler; the optical return loss test/optical fault point detection module comprises a PD photoelectric conversion 1 unit, a range amplification circuit 1 unit, a weak signal detection circuit and a filter circuit 1 unit which are sequentially connected. The input end of the PD photoelectric conversion 1 unit is connected with an output optical fiber of the stable light source part, and the output part of the filter circuit 1 unit is connected with an AD port of the microprocessor. One output end of the unit of the range amplifying circuit 1 is connected with an AD port of the microprocessor, so that fault point sampling data are transmitted to the microprocessor; the optical insertion loss/optical power meter testing module comprises a PD photoelectric conversion 2 unit, a program-controlled amplifying circuit 2 unit, a weak signal processing module and a filter circuit 2 unit which are sequentially connected. The input end of the PD photoelectric conversion 2 unit is connected with the other output optical fiber of the stable light source part, and the output part of the filter circuit 2 unit is connected with an AD port of the microprocessor.
The utility model provides a light path detecting system can realize the accurate effect of low cost and testing result.
Drawings
Fig. 1 is the structural schematic diagram of the optical path detection system provided by the present invention.
Detailed Description
An optical path detection system of the present invention will be described in further detail below.
The present invention will now be described in more detail with reference to the accompanying drawings, in which preferred embodiments of the invention are shown, it being understood that those skilled in the art may modify the invention herein described and still achieve the beneficial results of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.
In the interest of clarity, not all features of an actual implementation are described. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. It will of course be appreciated that in the development of any such actual embodiment, numerous implementation-specific details must be set forth in order to achieve the developer's specific goals.
In order to make the objects and features of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It is to be noted that the drawings are designed in a simplified manner and are intended to represent non-limiting proportions, and that the drawings are designed solely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
Fig. 1 is the utility model provides a light path detecting system's structural schematic, this light path detecting system include microprocessor part, stable light source part, light insertion loss/optical power meter test module, light return loss test/light fault point detection module and power module.
The microprocessor comprises a plurality of AD ports, a communication interface, a UART interface, an I/O interface and a power interface. The AD ports are respectively connected with the stable light source part, the optical return loss/optical power meter testing module and the optical return loss testing/optical fault point detecting module. The communication interface is connected with a human-computer interaction system, the UART interface is connected with an RS232/485 converter, the power supply interface is connected with a power supply module, and the I/O interface is connected with a laser driving module for stabilizing a light source.
The stable light source part comprises a laser driving unit, a PD backlight control unit, a bias current monitoring unit, a power control unit and a temperature control unit. The PD backlight control unit, the bias current monitoring unit, the power control unit and the temperature control unit are respectively connected to each AD port of the microprocessor; the laser driving unit is connected to the I/O interface of the microprocessor.
The stable light source part respectively transmits the light source to the optical insertion loss/optical power meter testing module and the optical return loss testing/optical fault point detecting module through two paths of optical fibers. Wherein, the two paths of optical fibers are respectively connected by optical couplers.
The optical return loss test/optical fault point detection module comprises a PD photoelectric conversion 1 unit, a range amplification circuit 1 unit, a weak signal detection circuit and a filter circuit 1 unit which are sequentially connected. The input end of the PD photoelectric conversion 1 unit is connected with an output optical fiber of the stable light source part, and the output part of the filter circuit 1 unit is connected with an AD port of the microprocessor. One output end of the unit of the range amplifying circuit 1 is connected with one AD port of the microprocessor, so that the fault point sampling data is transmitted to the microprocessor.
The optical insertion loss/optical power meter testing module comprises a PD photoelectric conversion 2 unit, a program-controlled amplifying circuit 2 unit, a weak signal processing module and a filter circuit 2 unit which are sequentially connected. The input end of the PD photoelectric conversion 2 unit is connected with the other output optical fiber of the stable light source part, and the output part of the filter circuit 2 unit is connected with an AD port of the microprocessor.
The utility model discloses a theory of operation is: firstly, a microprocessor sends a driving signal to a laser driver through an I/O port, wherein the driving signal comprises three continuous modulation signals with different frequencies, pulse signals with different duty ratios and a direct current driving signal. And then the laser driving unit drives the light source to stably and normally emit light, and the laser power is kept constant by adopting control feedback through four paths of AD of the temperature control unit, the light power control unit, the bias current monitoring unit and the PD backlight control unit.
Finally, laser enters the side key through the optical fiber coupler, reflected light of the to-be-detected part enters the PD photoelectric conversion circuit through the coupler and is converted into light current, corresponding voltage signals are obtained through mutual resistance amplification I/V conversion, direct current voltage in direct proportion to optical power is obtained through the weak signal detection processing circuit, and detection results are calculated through AD sampling microprocessing.
The utility model provides a light path detecting system can realize the accurate effect of low cost and testing result.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention, which, as such, are merely exemplary embodiments of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention are described in the above embodiments and the description without departing from the spirit and scope of the present invention, which also includes various equivalent changes and modifications, all of which will fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. An optical path detection system, characterized in that: the optical power meter comprises a microprocessor part, a stable light source part, an optical insertion loss/optical power meter testing module, an optical return loss testing/optical fault point detecting module and a power supply module; the microprocessor comprises a plurality of AD ports, a communication interface, a UART interface, an I/O interface and a power interface; the stable light source part comprises a laser driving unit, a PD backlight control unit, a bias current monitoring unit, a power control unit and a temperature control unit; the PD backlight control unit, the bias current monitoring unit, the power control unit and the temperature control unit are respectively connected to each AD port of the microprocessor; the laser driving unit is connected to an I/O interface of the microprocessor; the stable light source part respectively transmits the light source to the optical insertion loss/optical power meter testing module and the optical return loss testing/optical fault point detecting module through two paths of optical fibers; wherein, the two paths of optical fibers are respectively connected by an optical coupler; the optical return loss test/optical fault point detection module comprises a PD photoelectric conversion 1 unit, a range amplification circuit 1 unit, a weak signal detection circuit and a filter circuit 1 unit which are sequentially connected; the input end of the PD photoelectric conversion 1 unit is connected with an output optical fiber of the stable light source part, and the output part of the filter circuit 1 unit is connected with an AD port of the microprocessor; one output end of the unit of the range amplifying circuit 1 is connected with an AD port of the microprocessor, so that fault point sampling data are transmitted to the microprocessor; the optical insertion loss/optical power meter testing module comprises a PD photoelectric conversion 2 unit, a program-controlled amplifying circuit 2 unit, a weak signal processing module and a filter circuit 2 unit which are connected in sequence; the input end of the PD photoelectric conversion 2 unit is connected with the other output optical fiber of the stable light source part, and the output part of the filter circuit 2 unit is connected with an AD port of the microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921091892.5U CN210075237U (en) | 2019-07-12 | 2019-07-12 | Light path detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921091892.5U CN210075237U (en) | 2019-07-12 | 2019-07-12 | Light path detection system |
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| CN210075237U true CN210075237U (en) | 2020-02-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118393330A (en) * | 2024-06-21 | 2024-07-26 | 四川泰瑞创通讯技术股份有限公司 | Return loss test circuit, control method and system thereof, and storage medium |
-
2019
- 2019-07-12 CN CN201921091892.5U patent/CN210075237U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118393330A (en) * | 2024-06-21 | 2024-07-26 | 四川泰瑞创通讯技术股份有限公司 | Return loss test circuit, control method and system thereof, and storage medium |
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