CN215300633U - Test equipment for optical fiber audio cable - Google Patents
Test equipment for optical fiber audio cable Download PDFInfo
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- CN215300633U CN215300633U CN202121289372.2U CN202121289372U CN215300633U CN 215300633 U CN215300633 U CN 215300633U CN 202121289372 U CN202121289372 U CN 202121289372U CN 215300633 U CN215300633 U CN 215300633U
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- laser
- photoelectric conversion
- signal
- conversion module
- optic fibre
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Abstract
The utility model provides a test equipment of optic fibre audio line, include: multimode light source, multimode light source output's laser gets into optic fibre, optical fiber connection photoelectric conversion module, photoelectric conversion module receives laser and turns into visual light power numerical value, photoelectric conversion module includes transmitting element and receiving element, transmitting element includes continuous heavy current drive unit, the laser instrument, the receiving element includes continuous constant power feedback circuit, the transimpedance amplifier, the opto-isolator is connected to the heavy current drive unit, the transimpedance amplifier changes light signal into the signal of telecommunication, signal of telecommunication access equipment analog sampling module, equipment analog sampling module tests the signal of telecommunication and reacts the optic fibre attenuation value, the accurate control laser ware light output power of constant power feedback circuit, photoelectric conversion's stability has been promoted.
Description
Technical Field
The utility model relates to an optical fiber communication technology field especially relates to a test equipment of optic fibre audio frequency line.
Background
Optical fiber package is in the plastics sheath, make it can bend and can not break, the transmission of the one end of optic fibre adopts emitting diode or a bundle of laser, thereby convey the light pulse to optic fibre, the optic fibre other end detects the pulse through photosensitive element, optic fibre has very big cost advantage compared with traditional metal wire, and it is all very fast to wear information and optical transmission speed, optic fibre has replaced traditional metal wire in a large number in the aspect of transmission, in order to satisfy the high-speed demand that develops of society, audio line also gradually adopts optical fiber transmission in recent years, and gradually become the mainstream, but the test of audio frequency class optic fibre is very difficult, each index of audio frequency class optic fibre is inconvenient to obtain, there is the shortcoming.
In summary, in order to overcome the drawbacks of the prior art, a testing apparatus for fiber optic/audio cables is particularly needed to overcome the deficiencies of the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a test equipment of optic fibre audio frequency line, simple structure facilitates the use, and the photoelectric conversion module converts light signal into the signal of telecommunication, then to the signal of telecommunication test in order to acquire each index of audio frequency class optic fibre, the practicality is excellent.
The utility model discloses a solve the technical scheme that its technical problem adopted and be:
a test apparatus for a fiber optic audio line, comprising: multimode light source, multimode light source output's laser gets into optic fibre, optical fiber connection photoelectric conversion module, photoelectric conversion module receives laser and turns into visual light power numerical value, photoelectric conversion module includes transmitting element and receiving element, transmitting element includes continuous heavy current drive unit, the laser instrument, the receiving element includes continuous constant power feedback circuit, the transimpedance amplifier, the opto-isolator is connected to the heavy current drive unit, the transimpedance amplifier changes light signal into the signal of telecommunication, signal of telecommunication access equipment analog sampling module, equipment analog sampling module tests the attenuation value that comes the reaction optic fibre to the signal of telecommunication.
Further, the output port of the device analog sampling module is connected with a display.
Furthermore, a first pin and a second pin of the laser are respectively connected with the large-current driving unit, a third pin of the laser is connected with the constant-power feedback circuit, and a fourth pin of the laser is connected with the trans-impedance amplifier.
Further, the photoelectric conversion module is integrated on a circuit board.
Further, the optical coupling isolation circuit comprises an optical relay.
The utility model has the advantages that:
to sum up, the utility model relates to a rationally, simple structure makes the photoelectric conversion module convert light signal into the signal of telecommunication, and the accurate control laser light output of constant power feedback circuit has promoted photoelectric conversion's stability, then to each index of signal of telecommunication test in order to acquire audio frequency class optic fibre, the practicality is strong, does benefit to and uses widely.
Drawings
Fig. 1 is a block diagram of the present invention;
fig. 2 is a circuit diagram of the photoelectric conversion module of the present invention;
100-a large-current driving unit, 110-a laser, 120-a constant-power feedback circuit, 130-an optical coupling isolation circuit, 140-a trans-impedance amplifier, 10-an optical fiber, 20-a photoelectric conversion module and 30-an electric signal.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further described with reference to the drawings and the specific embodiments.
As shown in fig. 1, a test apparatus for a fiber optic audio line includes: multimode light source, multimode light source output's laser gets into optic fibre 10, optic fibre 10 connects photoelectric conversion module 20, photoelectric conversion module 20 is integrated on the circuit board, photoelectric conversion module 20 receives laser and is visual light power numerical value, photoelectric conversion module 20 includes transmitting element and receiving element, transmitting element includes continuous heavy current drive unit 100, laser instrument 110, receiving element includes continuous constant power feedback circuit 120, transimpedance amplifier 140, heavy current drive unit 100 is connected with opto-isolator circuit 130, fig. 2 is the utility model discloses photoelectric conversion module's circuit diagram, opto-isolator circuit 130 contains the optical relay. The transimpedance amplifier 140 converts the photocurrent into an electrical signal 30, the electrical signal 30 is connected to the device analog sampling module, and the device analog sampling module tests the electrical signal to reflect the strength of the optical fiber signal.
In addition, the output port of the equipment analog sampling module is connected with a display.
The first pin and the second pin of the laser 110 are respectively connected to the large current driving unit 100, the third pin of the laser 110 is connected to the constant power feedback circuit 120, and the fourth pin of the laser 110 is connected to the transimpedance amplifier 140.
The photoelectric conversion module adopts a die packaging mode bare chip to carry out binding process design, meets the requirement of micro design while realizing the product function, and is more beneficial to the expansion of the module.
The multimode light source outputs laser, the laser is attenuated after entering the optical fiber audio line, the photoelectric conversion module is used for receiving the laser and converting the laser into a visible light power value, and the optical fiber attenuation value is judged through the value tested by the photoelectric conversion module. Light signal passes through heavy current drive unit and laser instrument in proper order, is carried light signal to transimpedance amplifier by the laser instrument, and transimpedance amplifier converts light signal into the signal of telecommunication, and equipment analog sampling module is to the test of the signal of telecommunication and reflects the power of optical signal to this attenuation value of judging optic fibre to through display numerical value, thereby obtain the index of audio frequency class optic fibre, the utility model discloses but the control laser instrument light output power of constant power feedback circuit accuracy has promoted photoelectric conversion's stability, extension laser instrument life.
The utility model has the advantages that:
to sum up, the utility model relates to a rationally, simple structure makes photoelectric conversion module convert light signal into the signal of telecommunication, and the stability of conversion has been promoted to the control laser light output power that constant power feedback circuit can be quick and accurate, then to each index of signal of telecommunication test in order to acquire audio frequency class optic fibre, the practicality is strong, does benefit to and uses widely.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to let the technical personnel in the field understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (5)
1. A test apparatus for a fiber optic audio line, comprising: multimode light source, its characterized in that, multimode light source output's laser gets into optic fibre, optic fibre connection photoelectric conversion module, photoelectric conversion module receives laser and turns into visual light power numerical value, photoelectric conversion module includes transmitting element and receiving element, transmitting element includes continuous heavy current drive unit, the laser instrument, receiving element includes continuous constant power feedback circuit, the transimpedance amplifier, the opto-isolator is connected to the heavy current drive unit, the transimpedance amplifier changes light signal into the signal of telecommunication, the signal of telecommunication inserts equipment analog sampling module, equipment analog sampling module tests the attenuation value that comes the reaction optic fibre to the signal of telecommunication.
2. The test equipment for the optical fiber audio line according to claim 1, wherein the output port of the equipment analog sampling module is connected with a display.
3. The test equipment of the optical fiber audio line according to claim 1, wherein the pin 1 and the pin 2 of the laser are respectively connected with a large current driving unit, the pin 3 of the laser is connected with a constant power feedback circuit, and the pin 4 of the laser is connected with a transimpedance amplifier.
4. The apparatus for testing an optical fiber audio cable according to claim 1, wherein the photoelectric conversion module is integrated on a circuit board.
5. The test equipment of a fiber optic audio line of claim 1, wherein the optical coupler isolation circuit comprises an optical relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121289372.2U CN215300633U (en) | 2021-06-09 | 2021-06-09 | Test equipment for optical fiber audio cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121289372.2U CN215300633U (en) | 2021-06-09 | 2021-06-09 | Test equipment for optical fiber audio cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215300633U true CN215300633U (en) | 2021-12-24 |
Family
ID=79515256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121289372.2U Active CN215300633U (en) | 2021-06-09 | 2021-06-09 | Test equipment for optical fiber audio cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215300633U (en) |
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2021
- 2021-06-09 CN CN202121289372.2U patent/CN215300633U/en active Active
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