CN203323868U - High-precision fiber power meter - Google Patents
High-precision fiber power meter Download PDFInfo
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- CN203323868U CN203323868U CN201320342034XU CN201320342034U CN203323868U CN 203323868 U CN203323868 U CN 203323868U CN 201320342034X U CN201320342034X U CN 201320342034XU CN 201320342034 U CN201320342034 U CN 201320342034U CN 203323868 U CN203323868 U CN 203323868U
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Abstract
The utility model provides a high-precision fiber power meter including a photoelectric converting module, a front signal processing module, an A/D converting module, a digital signal processing module and a display module. The high-precision fiber power meter is characterized in that the photoelectric converting module, the front signal processing module, the A/D converting module, the digital signal processing module and the display module are sequentially connected together. The photoelectric converting module converts optical signals to electric signals. The electric signals are amplified and filtered through the front signal processing module and converted to 16-bit digital voltage signals through the A/D converting module. Finally, an optical power value of optical transmission of a current fiber is obtained through a series of calculation processes such as digital filtering, floating-point calculation, logarithm operation and the like performed by the digital signal processing module and is displayed through the display module.
Description
Technical field
The utility model relates to a kind of power meter, especially the high-precision optical fiber power meter.
Background technology
The power that the optical cable centralized monitoring system of current popular mainly adopts light power meter to measure transmission light changes, and judgement transmission light ruuning situation in optical cable, when luminous power occurs that when abnormal, starting OTDR (optical time domain reflectometer) carries out the Cable's Fault location.The power meter of measuring like this transmission light luminous power requires stable and reliable operation, measuring accuracy high.There is deficiency on the high side and that measuring accuracy is on the low side in domestic and international similar testing tool at present.
Summary of the invention
In view of above reason, the utility model provides a kind of high-precision optical fiber power meter, select optical element one light-receiving laser diode FU-39PD and 16 AD conversion chip CS5529 of high sensitivity and high reliability, guarantee to receive reliability and the measuring accuracy of transmission light in optical fiber.
The utility model solves the technical scheme that its technical matters adopts: a kind of high-precision optical fiber power meter, comprise photoelectric conversion module, advance signal processing module, A/D modular converter, digital signal processing module, display module, it is characterized in that, photoelectric conversion module, advance signal processing module, A/D modular converter, digital signal processing module, display module connect successively.Photoelectric conversion module converts light signal to electric signal, process advance signal processing module is by electric signal amplification, filtering, and be converted to l6 bit digital voltage signal by the A/D modular converter, then digital signal processing module is through series of computation such as digital filtering, floating-point operation, logarithm operations, and the optical power value that finally obtains transmission light in current optical fiber is shown by display module.
The beneficial effects of the utility model are, guarantee to have improved measuring accuracy under the prerequisite of stable and reliable operation, greatly reduce cost simultaneously, have higher practicality.
The accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
Embodiment
In Fig. 1, a kind of high-precision optical fiber power meter, comprise photoelectric conversion module 1, advance signal processing module 2, A/D modular converter 3, digital signal processing module 4, display module 5, it is characterized in that, photoelectric conversion module 1, advance signal processing module 2, A/D modular converter 3, digital signal processing module 4, display module 5 connect successively.Photoelectric conversion module 1 converts light signal to electric signal, process advance signal processing module 2 is by electric signal amplification, filtering, and be converted to l6 bit digital voltage signal by A/D modular converter 3, then digital signal processing module 4 is through series of computation such as digital filtering, floating-point operation, logarithm operations, and the optical power value that finally obtains transmission light in current optical fiber is shown by display module 5.
Photoelectric conversion module 1 adopts photodiode FU39PD to convert light signal to electric signal.The ultimate principle of FU39PD opto-electronic conversion is when tested illumination is mapped on photo-detector, produces corresponding photocurrent, realizes light signal is changed into to electric signal.Advance signal processing module 2 is the processing such as copped wave through three grades of amplifications, signal by the low current signal after the FU39PD opto-electronic conversion, be processed into analog to digital converter can change reception ± voltage signal of 5v.That A/D modular converter 3 is selected is CS5529, it is a kind of low-power consumption, 16 analog to digital converters able to programme that Crystal Simeconductor company produces, and the voltage signal of the analog to digital converter of making a gift to someone (A/D) converts 16 bit-serial digital signal streams to and gives digital signal processing module 4 and carry out the data processing after CS5529.Digital signal processing module 4 is selected TMS320VC33 high-speed floating point digital signal processor, the digital voltage signal that converts input is carried out to digital filtering, floating-point operation, logarithm operation, obtain the performance number of the current light signal collected after a series of data operations, and send display module 5 to show.Display module 5 shows the performance number of transmission light in the optical fiber of actual measurement; Secondly the actual requirement to light power meter according to the optical cable centralized monitoring system, arrange correlation parameter, and parameter be uploaded to PC, met so better the actual demand of optical cable centralized monitoring system.
Claims (1)
1. a high-precision optical fiber power meter, comprise photoelectric conversion module (1), advance signal processing module (2), A/D modular converter (3), digital signal processing module (4), display module (5), it is characterized in that, photoelectric conversion module (1), advance signal processing module (2), A/D modular converter (3), digital signal processing module (4), display module (5) connect successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320342034XU CN203323868U (en) | 2013-06-15 | 2013-06-15 | High-precision fiber power meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320342034XU CN203323868U (en) | 2013-06-15 | 2013-06-15 | High-precision fiber power meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203323868U true CN203323868U (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320342034XU Expired - Fee Related CN203323868U (en) | 2013-06-15 | 2013-06-15 | High-precision fiber power meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203323868U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105894928A (en) * | 2016-06-24 | 2016-08-24 | 桂林创研科技有限公司 | Extendable high-precision digital optical power meter |
-
2013
- 2013-06-15 CN CN201320342034XU patent/CN203323868U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105894928A (en) * | 2016-06-24 | 2016-08-24 | 桂林创研科技有限公司 | Extendable high-precision digital optical power meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20140615 |
|
| EXPY | Termination of patent right or utility model |