CN105812061A - Multipath incremental encoder optical fiber transmission system based on FPGA - Google Patents
Multipath incremental encoder optical fiber transmission system based on FPGA Download PDFInfo
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- CN105812061A CN105812061A CN201410843527.0A CN201410843527A CN105812061A CN 105812061 A CN105812061 A CN 105812061A CN 201410843527 A CN201410843527 A CN 201410843527A CN 105812061 A CN105812061 A CN 105812061A
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Abstract
The technology belongs to the optical transmission field and particularly relates to a multipath incremental encoder optical fiber transmission system based on FPGA. The multipath incremental encoder optical fiber transmission system comprises an underwater module and an overwater module; the underwater module comprises an optocoupler A, an underwater module FPGA, and a photoelectric conversion module A; the overwater module comprises an optocoupler B, an overwater module FPGA and a photoelectric conversion module B; and the underwater module is connected to the overwater module through an optical fiber. The multipath incremental encoder optical fiber transmission system solves the problem that the quantity of the cables is many and the problem of the noise coupling of the motor, and guarantees the super high synchronization of information transmission and no loss.
Description
Technical field
This technology belongs to fiber-optic transfer field, is specifically related to a kind of multipath incremental encoder fibre-optic transmission system (FOTS) based on FPGA.
Background technology
The primary Ioops system of nuclear power station has contained the High Temperature High Pressure cooling medium (water) during reactor operation, as leakage occurs in primary Ioops system equipment, big economic loss is caused by causing unplanned short shutdown, it is likely to cause serious nuclear leakage accident simultaneously, therefore the equipment of primary Ioops and the prescription of pipeline are significantly high, ensureing safety equipment requirement, formulate a series of coherence check specification, key equipment has been proposed inspection requirements in different phase.The important key equipment of one loop of nuclear power station as: the critical pieces such as nuclear reactor pressure container, steam generator, manostat are to be formed by shell ring forging welding assembly, shell ring forging needed to do corresponding Non-Destructive Testing according to specification in the factory process stage, as: ultrasonic, visual, infiltration etc..
Such as nuclear reactor pressure container ultrasonic examination is example.Nuclear reactor pressure container ultrasonic examination comprises multiple inspection project, and such as cylinder girth joint, bottom (head) weld seam, nozzle weld, ring flange weld seam etc. form.Different welding inspection is completed by special checking tool.Each checking tool contains the motor driving of 2 or multiple axle.In ultrasonic examination system, it is necessary to the positional information of each motor shaft--code device signal, with the particular location of corresponding scanning zone.
The code device signal of current motor adopts increment type to check the mark signal mostly, the code device signal of each axle is by A+, A-, B+, B-forms, a set of nuclear reactor pressure container checks the code device signal that system comprises tens axles, it is necessary to be transferred to Ultrasound Instrument simultaneously, so needs tens single data cables to be connected to Ultrasound Instrument from equipment.Causing the ultrasonic cable substantial amounts on equipment, utilization rate is low and affects the layout of equipment.And easily the interference on motor is transmitted to Ultrasound Instrument, affect ultrasonic examination
Summary of the invention
It is an object of the invention to: providing a kind of multipath incremental encoder optical fiber transmission device based on FPGA, the incremental encoder of dozens of axle can be converted into optical signal by this device, is transferred to Ultrasound Instrument by being reduced into incremental encoder signal after fiber-optic transfer.
Technical scheme is as follows: a kind of multipath incremental encoder fibre-optic transmission system (FOTS) based on FPGA, it is characterised in that: including module and module waterborne under water, wherein module includes optocoupler A, under water module FPGA, photoelectric conversion module A under water；nullModule waterborne includes optocoupler B、Module FPGA waterborne、Photoelectric conversion module B，In module, optocoupler A accesses module FPGA under water under water，And module FPGA is connected with photoelectric conversion module A more under water，It is connected by optical fiber between photoelectric conversion module A in module and the photoelectric conversion module B in module waterborne under water，Photoelectric conversion module B accesses module FPGA waterborne，Module FPGA waterborne is connected with optocoupler B again，Coding signal enters in the optocoupler A of module under water，The parallel signal collected is converted to the signal of serial by module FPGA under water，And it is sent to photoelectric conversion module A，The photoelectric conversion module B in module waterborne is delivered to through optical fiber，It is then sent through in module FPGA waterborne，The signal of serial is also converted to parallel coding signal by the FPGA of module on the water，It is then sent through in module waterborne corresponding optocoupler B.
Described optocoupler A includes optocoupler A1, optocoupler A2.... optocoupler An；Optocoupler B includes optocoupler B1, optocoupler B2... optocoupler Bn, optocoupler A, optocoupler B play the effect of isolation.
nullCoding signal includes coding signal 1、Coding signal 2.... encodes signal n，Coding signal 1、Coding signal 2.... encodes signal n and has respectively entered the corresponding optocoupler A1 of module under water、Optocoupler A2.... optocoupler An，The coding signal collected is converted to digital signal by module FPGA under water，Then by parallel digital signal 1、Digital signal 2... digital signal n is converted to the digital signal of serial，Again by whole digital signals according to digital signal 1、The sequencing of digital signal 2.... digital signal n delivers to photoelectric conversion module A，Photoelectric conversion module A is converted into optical signal，And deliver to the photoelectric conversion module B in module waterborne through optical fiber，And it is converted into digital signal in photoelectric conversion module B，It is then sent through in module FPGA waterborne，On the water the FPGA of module is reduced to coding signal，And by the digital signal 1 of serial、Digital signal 2.... digital signal n is converted to parallel coding signal 1、Coding signal 2.... encodes signal n，Deliver to corresponding optocoupler B1 in module waterborne more respectively、Optocoupler B2... optocoupler Bn，Send all encoding signal eventually through optocoupler，The order of whole process maintenance signal is constant.
The remarkable result of the present invention is in that: solve number of cables many, the coupling of noise of motor, and can guarantee that the superelevation synchronicity of transmission information and do not lose completely.
Accompanying drawing explanation
Fig. 1 is a kind of multipath incremental encoder fibre-optic transmission system (FOTS) schematic diagram based on FPGA of the present invention
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As it is shown in figure 1, a kind of multipath incremental encoder fibre-optic transmission system (FOTS) based on FPGA, including module under water and module waterborne, wherein module includes optocoupler A, under water module FPGA, photoelectric conversion module A under water；Module waterborne includes optocoupler B, module FPGA waterborne, photoelectric conversion module B.It is connected by optical fiber between module with module waterborne under water.
nullOne group of coding signal，Including coding signal 1、Coding signal 2.... encodes signal n，Have respectively entered the corresponding optocoupler A1 of module under water、Optocoupler A2.... optocoupler An，Optocoupler plays the effect of isolation，The coding signal collected is converted to digital signal by module FPGA under water，Then by parallel digital signal 1、Digital signal 2... digital signal n is converted to the digital signal of serial，Again by whole digital signals according to digital signal 1、The sequencing of digital signal 2.... digital signal n delivers to photoelectric conversion module A，Photoelectric conversion module A is converted into optical signal，And deliver to the photoelectric conversion module B in module waterborne through optical fiber，And it is converted into digital signal in photoelectric conversion module B，It is then sent through in module FPGA waterborne，On the water the FPGA of module is reduced to coding signal，And by the digital signal 1 of serial、Digital signal 2.... digital signal n is converted to parallel coding signal 1、Coding signal 2.... encodes signal n，Deliver to corresponding optocoupler B1 in module waterborne more respectively、Optocoupler B2... optocoupler Bn，Optocoupler plays the effect of isolation，Send all encoding signal eventually through optocoupler，The order of whole process maintenance signal is constant.
Claims (3)
1. the multipath incremental encoder fibre-optic transmission system (FOTS) based on FPGA, it is characterised in that: including module and module waterborne under water, wherein module includes optocoupler A, under water module FPGA, photoelectric conversion module A under water；nullModule waterborne includes optocoupler B、Module FPGA waterborne、Photoelectric conversion module B，In module, optocoupler A accesses module FPGA under water under water，And module FPGA is connected with photoelectric conversion module A more under water，It is connected by optical fiber between photoelectric conversion module A in module and the photoelectric conversion module B in module waterborne under water，Photoelectric conversion module B accesses module FPGA waterborne，Module FPGA waterborne is connected with optocoupler B again，Coding signal enters in the optocoupler A of module under water，The parallel signal collected is converted to the signal of serial by module FPGA under water，And it is sent to photoelectric conversion module A，The photoelectric conversion module B in module waterborne is delivered to through optical fiber，It is then sent through in module FPGA waterborne，The signal of serial is also converted to parallel coding signal by the FPGA of module on the water，It is then sent through in module waterborne corresponding optocoupler B.
2. a kind of multipath incremental encoder fibre-optic transmission system (FOTS) based on FPGA according to claim 1, it is characterised in that: described optocoupler A includes optocoupler A1, optocoupler A2.... optocoupler An；Optocoupler B includes optocoupler B1, optocoupler B2... optocoupler Bn, optocoupler A, optocoupler B play the effect of isolation.
null3. a kind of multipath incremental encoder fibre-optic transmission system (FOTS) based on FPGA according to claim 2，It is characterized in that: coding signal includes coding signal 1、Coding signal 2.... encodes signal n，Coding signal 1、Coding signal 2.... encodes signal n and has respectively entered the corresponding optocoupler A1 of module under water、Optocoupler A2.... optocoupler An，The coding signal collected is converted to digital signal by module FPGA under water，Then by parallel digital signal 1、Digital signal 2... digital signal n is converted to the digital signal of serial，Again by whole digital signals according to digital signal 1、The sequencing of digital signal 2.... digital signal n delivers to photoelectric conversion module A，Photoelectric conversion module A is converted into optical signal，And deliver to the photoelectric conversion module B in module waterborne through optical fiber，And it is converted into digital signal in photoelectric conversion module B，It is then sent through in module FPGA waterborne，On the water the FPGA of module is reduced to coding signal，And by the digital signal 1 of serial、Digital signal 2.... digital signal n is converted to parallel coding signal 1、Coding signal 2.... encodes signal n，Deliver to corresponding optocoupler B1 in module waterborne more respectively、Optocoupler B2... optocoupler Bn，Send all encoding signal eventually through optocoupler，The order of whole process maintenance signal is constant.
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| CN201410843527.0A CN105812061A (en) | 2014-12-30 | 2014-12-30 | Multipath incremental encoder optical fiber transmission system based on FPGA |
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| CN201410843527.0A CN105812061A (en) | 2014-12-30 | 2014-12-30 | Multipath incremental encoder optical fiber transmission system based on FPGA |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450549A (en) * | 2018-11-26 | 2019-03-08 | 中国人民解放军陆军工程大学 | Photoelectric conversion device and communication system |
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| US4394573A (en) * | 1980-12-15 | 1983-07-19 | Conoco Inc. | Method and apparatus for underwater detection of hydrocarbons |
| CN203366524U (en) * | 2013-05-24 | 2013-12-25 | 中国科学院等离子体物理研究所 | High-speed signal isolation and transmission system based on FPGA (field programmable gate array) |
| CN104113740A (en) * | 2014-07-28 | 2014-10-22 | 中国科学院光电技术研究所 | Mixed format signal optical fiber transmission device |
| CN204305025U (en) * | 2014-12-30 | 2015-04-29 | 中核武汉核电运行技术股份有限公司 | A kind of multipath incremental encoder fiber optic transmission system based on FPGA |
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2014
- 2014-12-30 CN CN201410843527.0A patent/CN105812061A/en active Pending
Patent Citations (4)
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| US4394573A (en) * | 1980-12-15 | 1983-07-19 | Conoco Inc. | Method and apparatus for underwater detection of hydrocarbons |
| CN203366524U (en) * | 2013-05-24 | 2013-12-25 | 中国科学院等离子体物理研究所 | High-speed signal isolation and transmission system based on FPGA (field programmable gate array) |
| CN104113740A (en) * | 2014-07-28 | 2014-10-22 | 中国科学院光电技术研究所 | Mixed format signal optical fiber transmission device |
| CN204305025U (en) * | 2014-12-30 | 2015-04-29 | 中核武汉核电运行技术股份有限公司 | A kind of multipath incremental encoder fiber optic transmission system based on FPGA |
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| 朱武增: "水下机器人数字光纤传输系统的研究与设计", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
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| CN109450549A (en) * | 2018-11-26 | 2019-03-08 | 中国人民解放军陆军工程大学 | Photoelectric conversion device and communication system |
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Application publication date: 20160727 |