CN201464156U - Optical fiber breakpoint detector - Google Patents
Optical fiber breakpoint detector Download PDFInfo
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- CN201464156U CN201464156U CN2009200763816U CN200920076381U CN201464156U CN 201464156 U CN201464156 U CN 201464156U CN 2009200763816 U CN2009200763816 U CN 2009200763816U CN 200920076381 U CN200920076381 U CN 200920076381U CN 201464156 U CN201464156 U CN 201464156U
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Abstract
The utility model discloses a novel optical fiber breakpoint detector, particularly a SOPC-based detector using an SOPC Builder tool of Quarters II to integrate a 32-bit Nios II soft-core processor. The novel optical fiber breakpoint detector can be considered as an integrated and modularized distance measurement instrument, does not need a separate hardware peripheral counting and timing circuit, also does not need to artificially count a breakpoint distance, adopts a Nios II soft core to process, and reads and writes data by an AVALON bus to realize final breakpoint detection. The novel optical fiber breakpoint detector also comprises a light emitting and receiving probe for emitting and receiving light suitable for being transmitted on single-mode and multi-mode optical fibers. In the utility model, the light emitting and receiving probe is an integration which is provided with a drive and has the photo-electric and electro-to-optic conversion functions. A processed electrical signal is used to control optical control and detect an IP core.
Description
Technical field:
The utility model relates to a kind of breakpoints of optical fiber detecting device, is specially a kind of detecting device that is applied to detection fiber breakpoint in the fiber optic network.
Background technology:
Along with optical fiber communication and photoelectronic industry enter a new period, that uses in the optical fiber premises network is increasing, also more and more important to the detection of breakpoints of optical fiber, also more and more essential.The fundamental purpose of the detection of breakpoints of optical fiber is the quality that the assurance system connects, and finds out the trouble spot of optical fiber when reducing failure factor and fault.Detection method is a lot, mainly is divided into artificial ordinary surveying and exact instrument and measures.
Artificial ordinary surveying is used for differentiating the optical fiber of being done when generally being used for the break-make of fast detecting optical fiber and construction.It is to squeeze into visible light with a simple and easy light source from an end of optical fiber, observes from the other end which root is luminous realizes.Though this method is easy, it is the breakpoint of artificial ordinary surveying optical fiber quantitatively.
Exact instrument is measured and then is to use optical time domain reflectometer (OTDR) that optical fiber is carried out quantitative measurment, earlier optical fiber is sent a signal, observing then and a bit returning what come from certain is any information, this process can repeatedly be carried out, at last these results are averaged and show with the form of track, it is not easily that this mode reads number, and the technical ability to the operation maintenance personnel requires to be difficult to operating equipment analysis result, numerous and diverse to the localization of fault rules than higher, layman like this.
Document code: A article numbering: 1002-5561 (2008) 07-0048-03 " development of breakpoints of optical fiber tester " has realized the measurement of breakpoints of optical fiber, this tester is to calculate with the hardware programming language compilation of FPGA, logic function modules such as LCD demonstration, call the measurement that realizes breakpoints of optical fiber by logic between each functional module then, it is core that yet the utility model adopts the soft-core processor Nios II with Altera, by photocontrol IP kernel with the parametrization conceptual design, LCD shows that the control IP kernel adds in integrated 32 the NiosII soft-core processor of SOPC Builder instrument that utilize QuartersII, the NiosII soft-core processor is constantly visited IP kernel, and relevant data message read and write transmission by the AVALON bus, realize the final data Presentation Function.On the CycloneII of Altera FPGA, constituted a SOPC SOC (system on a chip) that realizes the breakpoints of optical fiber detection by the NiosII soft-core processor, like this when carrying out the upper layer software (applications) design, can revise and add new hardware at any time as required, to satisfy new system requirements, realize real real-time operation.
The utility model content:
The purpose of this utility model is to provide the modular breakpoints of optical fiber detecting device based on SOPC of the integrated NiosII soft-core processor of SOPC Builder instrument of a kind of QuartersII of utilization.It controls IP kernel with parametrization conceptual design photocontrol IP kernel, LCD, realizes that modularization handles, and is that core is called IP kernel with the soft-core processor Nios II of Altera, realizes the transmission of data by AVALON bus read-write register.
The problem that the utility model solved can realize by the following technical solutions:
A kind of novel breakpoints of optical fiber detecting device, this device comprises:
One light emission receiving transducer module; Described light emission receiving transducer module is used for handling photoelectricity or electric light conversion, has the light signal of transmitting and receiving function;
One photocontrol and detection IP module; Described photocontrol is connected with light emission receiving transducer module with detection IP module, by receiving the enabling signal of AVALON bus, control emission receiving transducer module is launched or is received light and realize photoelectricity or the electric light conversion, produces electric signal simultaneously and is used for photocontrol and the counting of surveying IP inside modules crystal oscillator;
The LCD that also is provided with simultaneously shows control IP module, jtag interface module and is used for connecting photocontrol and the AVALON bus of surveying IP module, LCD demonstration control IP module and jtag interface module respectively;
It is characterized in that,
Described device also is provided with the NiosII soft-core processor, and described NiosII soft-core processor reads and writes data by the AVALON bus and visits IP kernel (comprise photocontrol and survey IP and LCD control IP), realizes the Presentation Function of related data.
Described light emission receiving transducer inside modules has driving, does not need extra driving circuit.
Described NiosII soft-core processor is to utilize the SOPC Builder instrument of QuartersII integrated.Be that soft-core processor NiosII with Altera is a core, show the control IP kernel, and IP kernel is added in the integrated NiosII soft-core processor of the SOPC Builder instrument that utilizes QuartersII with parametrization conceptual design photocontrol IP kernel, LCD.Therefore novel breakpoints of optical fiber detecting device can be considered a modular detecting device based on SOPC.
Can utilize integrated 32 NiosII soft-core processor of SOPC Builder instrument of QuartersII like this, and flexible invocation writes modular IP kernel, do not need to realize comparatively complicated function with the hardware programming language.
Described by the inner set C ranging procedure module realization distance calculation of NiosII soft-core processor, the NiosII soft-core processor writes LCD with data in display control module by the AVALON bus, and realizes showing.
The utility model designs based on the SOPC platform of Nios II, and at the function of the design system, self-defined photocontrol realizes system design with hardware programming language design modules such as surveying IP, LCD demonstration control IP.On the CycloneII of Altera FPGA, constituted a SOPC SOC (system on a chip) that novel breakpoints of optical fiber detects.
Description of drawings:
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is an one-piece construction block diagram of the present utility model.
Fig. 2 is described photocontrol of the present utility model and the structured flowchart of surveying the IP module.
Fig. 3 is an overall system design hardware block diagram of the present utility model.
Embodiment:
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1, photocontrol and the input of surveying IP2, output interface connects the output that has emission, receives the light emission receiving transducer 1 of light, input end respectively; Photocontrol shows that with detection IP 2, NiosII soft-core processor 4, LCD control IP kernel 5 hangs on the AVALON bus 3, and LCD display 6 is connected LCD and shows on the control IP kernel 5.
Light emission receiving transducer 1 has emission, is received in the light probe that one also can realize opto-electronic conversion in the present embodiment, the electric signal control photocontrol of its output and the counting of the inside crystal oscillator of surveying IP 2.This light emission receiving transducer has integrated characteristics, need not peripheral emission, reception, conversion, driving circuit.
When photocontrol when surveying IP and receive the enabling signal that the AVALON bus writes, photocontrol transmits to one of receiving transducer of light emission with surveying IP, controls its emission light, gives enabling counting signal of inner crystal oscillator simultaneously; When light emission receiving transducer receives back light, give photocontrol and the end of surveying a control signal control of IP counting.
AVALON bus 3 writes NiosII soft-core processor 4 with the count results data of gathering, the 4 inner C range finder module computings of NiosII soft-core processor, the result calculated data are write LCD by AVALON bus 3 show in the control IP kernel 5, LCD demonstration control IP kernel 5 will be controlled LCD display 6 and demonstrate net result.
The result of calculation that is saved in count information in the register, NiosII soft-core processor 4 inner C range finder modules realization breakpoints that the data of reading and writing by AVALON bus 3 have light transmitter trigger signal, photodetection module 2 to produce, these data messages constantly carry out reading and writing by AVALON bus 3 when NiosII soft-core processor 4 is carried out handles.
The utility model focuses on tells about a kind of breakpoints of optical fiber detector, focus on photodetection control, the soft nuclear of NiosII carries out the information processing part by the AVALON bus, and integrated processing modules implement has partly been adopted in optical processing, does not therefore do for light emission receiving transducer 1 and gives unnecessary details.
Referring to Fig. 2, photocontrol of the present utility model and detection IP structured flowchart comprise that light sends control module, light-receiving control module, and inner crystal oscillator counting module.Photocontrol is connected on the AVALON bus with 10 pins that the light of surveying IP sends control module, the AVALON bus writes enabling signal, 7 pins are connected on the emission port of light emission receiving transducer, be convenient to control the emission of light emission receiving transducer, 11 pins are connected the startup of control counting on the counting module.
Photocontrol is connected on the receiving port of light emission receiving transducer with 8 pins of the light-receiving control module of surveying IP, the electric signal that transmission light emission receiving transducer returns, and 12 pins are connected the end of control counting on the counting module.
Counting module reads in control signal by 11,12 pins, and 9 pins of counting module are connected on the AVALON bus, and the AVALON bus is read enumeration data by 9 pins.
The emission of light, receiving time information are to count by the inner crystal oscillator of light emission receiving transducer electrical signal converted control FPGA.After the AVALON bus is write a startup of light inlet transmission control module light emission signal by 10 pins, light sends control module and sends a control signal to an emission of light emission receiving transducer light signal by 7 pins, give a beginning of inner crystal oscillator counting module count signal by 11 pins simultaneously, when light emission receiving transducer return control signal is given light-receiving control module 8 pins, the light-receiving control module finishes count signal for one of counting module by 12 pins, the accurate collection of the count information between realizing sending and receiving.And the count information of gathering is stored in the register, so that the photocontrol of AVALON bus access when surveying IP, is written to the temporal information of being gathered in the NiosII soft-core processor by 9 pins.
With reference to figure 3, overall system design hardware block diagram of the present utility model, JTAG debugging module are connected on the AVALON bus, the emulation of control FPGA.Photocontrol is connected on the light emission receiving transducer with detection IP, emission, the reception of control light, and then the counting of control crystal oscillator, photocontrol is connected on the AVALON bus with surveying IP, NiosII soft-core processor, LCD control IP etc., realizes the transmission of data on the AVALON bus.
With reference to the light among the figure 3 emission receiving transducer is a kind ofly to have emission, receiving function in the light probe of one, can emission be suitable for the light that on list, multimode optical fiber, transmits, can realize the conversion between photoelectricity, the electric light, and its inside is an integrated device with driving.
When photocontrol receives the photopolymerization initiation signal with detection IP, control light emission receiving transducer emission light to control signal of emission port of light emission receiving transducer, photocontrol simultaneously begins counting for a control signal control of the inner crystal oscillator of FPGA crystal oscillator with detection IP; After light emission receiving transducer received the light that is reflected by barrier, to photocontrol and end signal of detection IP, photocontrol this moment was controlled crystal oscillator with detection IP to control signal of crystal oscillator transmission and is finished counting, and count results is stored in the register.
When the NiosII soft-core processor passes through the photocontrol of AVALON bus access and surveys IP, to be written to the data message that reads in the register in the NiosII soft-core processor by the AVALON bus, the NiosII soft-core processor is according to data streams read information, calculate the transmission of light and the mistiming between the reception accurately by inner C software programming, and the calculating of realization breakpoint distance, the data result that processing obtains is deposited in the register equally, when the NiosII soft-core processor is carried out the LCD display control module, the NiosII soft-core processor reads data after the processing by the AVALON bus, and will read to such an extent that data are written in the LCD display control module by the AVALON bus, LCD display is connected on the LCD display control module interface, when the LCD display control module receives the data that the AVALON bus writes, the control LCD display is shown relevant data result.
SOPC platform based on Nios II designs, and at the function of the design system, self-defined photocontrol realizes system design with hardware programming language design modules such as surveying IP, LCD demonstration control IP.On the CycloneII of Altera FPGA, constituted a SOPC SOC (system on a chip) that novel breakpoints of optical fiber detects.
Utilize the integrated soft-core processor NiosII4 of SOPC Builder instrument of QuartersII to be core, the IP kernel of design hangs on the NiosII soft-core processor by the AVALON bus; The NiosII soft-core processor is write modular IP kernel by C language realization flexible invocation, and writes some comparatively complicated functional modules, so just can not need to realize writing of complex logic function with the hardware programming language.
Breakpoints of optical fiber detecting device by the NiosII soft-core processor is realized is integrated into central authorities' control and peripheral interface circuit on the chip piece, to increase and decrease the value volume and range of product of peripheral hardware according to the actual requirements in the design phase, carries out the upgrading and the expansion of function.The utlity model has very strong extendability, be convenient to promote the use of.
In other is implemented, can replace with other electron devices or the circuit of equal effect, also can obtain identical effect.Also can adopt other to have that emission receives and photoelectric converting function replaces in hardware circuit, the driving circuit of one with reference to the light described in the figure 1 emission receiving transducer; Realization with reference to the soft nuclear processing of NiosII among the figure 3, AVALON bus read-write capability also can realize in the QuartersII environment by the hardware programming language.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the instructions just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. breakpoints of optical fiber detecting device, this device comprises:
One light emission receiving transducer module; Described light emission receiving transducer module is used for handling photoelectricity or electric light conversion, has the light signal of transmitting and receiving function;
One photocontrol and detection IP module; Described photocontrol is connected with light emission receiving transducer module with detection IP module, by receiving the enabling signal of AVALON bus, control emission receiving transducer module is launched or is received light and realize photoelectricity or the electric light conversion, produces electric signal simultaneously and is used for photocontrol and the counting of surveying IP inside modules crystal oscillator;
The LCD that also is provided with simultaneously shows control IP module, jtag interface module and is used for connecting photocontrol and the AVALON bus of surveying IP module, LCD demonstration control IP module and jtag interface module respectively;
It is characterized in that,
Described device also is provided with the NiosII soft-core processor, and described NiosII soft-core processor reads and writes data by the AVALON bus and visits IP kernel, realizes the Presentation Function of related data.
2. according to the breakpoints of optical fiber detecting device of claim 1, it is characterized in that described light emission receiving transducer inside modules has driving, does not need extra driving circuit.
3. according to the breakpoints of optical fiber detecting device of claim 1, it is characterized in that, described NiosII soft-core processor is to utilize the SOPC Builder instrument of QuartersII integrated, be that soft-core processor NiosII with Altera is a core, show the control IP kernel with parametrization conceptual design photocontrol IP kernel, LCD, and IP kernel added in the integrated NiosII soft-core processor of the SOPC Builder instrument that utilizes QuartersII, therefore novel breakpoints of optical fiber detecting device can be considered a modular detecting device based on SOPC.
4. according to the breakpoints of optical fiber detecting device of claim 1, it is characterized in that, described by the inner set C ranging procedure module realization distance calculation of NiosII soft-core processor, the NiosII soft-core processor writes LCD with data in display control module by the AVALON bus, and realizes showing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200763816U CN201464156U (en) | 2009-06-16 | 2009-06-16 | Optical fiber breakpoint detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200763816U CN201464156U (en) | 2009-06-16 | 2009-06-16 | Optical fiber breakpoint detector |
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| Publication Number | Publication Date |
|---|---|
| CN201464156U true CN201464156U (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009200763816U Expired - Fee Related CN201464156U (en) | 2009-06-16 | 2009-06-16 | Optical fiber breakpoint detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051030A (en) * | 2019-06-07 | 2020-12-08 | 爱斯福公司 | Repeated OTDR measurement detection |
| US11879802B2 (en) | 2020-10-22 | 2024-01-23 | Exfo Inc. | Testing optical fiber link continuity using OTDR backscattering patterns |
-
2009
- 2009-06-16 CN CN2009200763816U patent/CN201464156U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051030A (en) * | 2019-06-07 | 2020-12-08 | 爱斯福公司 | Repeated OTDR measurement detection |
| CN112051030B (en) * | 2019-06-07 | 2023-11-28 | 爱斯福公司 | Repeated OTDR measurement detection |
| US11879802B2 (en) | 2020-10-22 | 2024-01-23 | Exfo Inc. | Testing optical fiber link continuity using OTDR backscattering patterns |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20100616 |