CN102778603B - A kind of optical fiber current sensor signal intelligent system - Google Patents
A kind of optical fiber current sensor signal intelligent system Download PDFInfo
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- CN102778603B CN102778603B CN201110445639.7A CN201110445639A CN102778603B CN 102778603 B CN102778603 B CN 102778603B CN 201110445639 A CN201110445639 A CN 201110445639A CN 102778603 B CN102778603 B CN 102778603B
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Abstract
The present invention relates to fibre optic current sensor field, is a kind of optical fiber current sensor signal intelligent system.It is characterized in that digital signal sending/receiving device is connected with bottom digital information processing system, bottom digital information processing system is connected with advanced digital signal disposal system by another digital signal sending/receiving device, in addition, bottom digital information processing system is connected with high precision digiverter; The high speed processing unit of high precision digiverter is connected with conditioner, and the output terminal of conditioner is connected with amplifier, and amplifier is connected with analog to digital converter again, and analog to digital converter is connected with high speed processing unit again; The signal separation module of advanced digital signal disposal system is connected with central processing unit, and central processing unit is connected with parameter downloads module with human-computer interaction interface respectively.Owing to taking the technical program, there is well anti-interference and long-distance transmissions ability, and provide the signal separation techniques of different frequency domain.
Description
Technical field
The present invention relates to fibre optic current sensor field, is a kind of optical fiber current sensor signal intelligent system.
Background technology
DC current sensor is the visual plant of current detecting in the fields such as metallurgy, chemical industry, and safety, the stable operation of its long-time stability, reliability, security and electric power system are closely related.
At present, in the interchange being used in electric power because its measurement range is large, precision is high based on the fibre optic current sensor of Faraday effect reported and direct current measurement.
What adopt due to this fibre optic current sensor is complete-digital closed-loop programme of work, outputs signal as digital quantity, although measuring accuracy is high, can not directly apply to conventional rectifier system, is thus restricted in application that is metallurgical, chemical field.
Summary of the invention
The object of the invention is to provide a kind of be applicable to digital output optical fibre current sensor high speed, high precision, multiplex roles intelligent conversion system, in order to digital signal is converted into flexibly the equipment such as commutation controller can simulating signal.
Technical scheme of the present invention is: it is characterized in that digital signal sending/receiving device is connected with bottom digital information processing system, bottom digital information processing system is connected with advanced digital signal disposal system by another digital signal sending/receiving device, in addition, bottom digital information processing system is connected with high precision digiverter; The high speed processing unit of high precision digiverter is connected with conditioner, and the output terminal of conditioner is connected with amplifier, and amplifier is connected with analog to digital converter again, and analog to digital converter is connected with high speed processing unit again; The signal separation module of advanced digital signal disposal system is connected with central processing unit, and central processing unit is connected with parameter downloads module with human-computer interaction interface respectively.
Owing to taking technique scheme, there is well anti-interference and long-distance transmissions ability, and provide the signal separation techniques of different frequency domain.
Accompanying drawing explanation
Fig. 1 is System Working Principle figure of the present invention.
Fig. 2 is high precision digiverter fundamental diagram of the present invention.
Fig. 3 is advanced digital signal disposal system fundamental diagram of the present invention.
In the drawings: 1, digital signal sending/receiving device; 2, digital signal sending/receiving device; 3, bottom digital information processing system; 4, high precision digiverter; 5, advanced digital signal disposal system; 6, high speed processing unit; 7, conditioner; 8, amplifier; 9, analog to digital converter; 10, signal separation module; 11, central processing unit; 12, parameter downloads module; 13, human-computer interaction interface.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
In FIG, the digital interface that fibre optic current sensor exports send/receive device 1 with the digital signal of native system and is connected, digital signal sending/receiving device 1 is connected with bottom digital information processing system 3, bottom digital information processing system 3 is connected with advanced digital signal disposal system 5 by another digital signal sending/receiving device 2, in addition, bottom digital information processing system 3 is connected with high precision digiverter 4.So far, user can be modified by the parameter of advanced digital signal disposal system 5 to this device, simultaneously the direct current average of read current, harmonic content, electric energy the parameter such as can to add up in real time; In addition, the output terminal of high precision digiverter 4 will provide voltage, current signal, be connected to backstage rectification, control system, and the close-loop feedback applying electric current for busbar controls.
In fig. 2, the high speed processing unit 6 of high precision digiverter 4 is connected with conditioner 7, and the output terminal of conditioner 7 is connected with amplifier 8, and amplifier 8 is connected with analog to digital converter 9 again, and analog to digital converter 9 is connected with high speed processing unit 6 again; The signal separation module 10 of advanced digital signal disposal system 5 is connected with high speed processing unit 6 again, the output high-accuracy voltage of conditioner 7, current analog signal, used for rectification, control system.
In figure 3, Advanced Signal Processing Unit 5 receives the digital signal of bottom digital information processing system 3, entering signal separation module 10, under the control of central processing unit 11, signal separation module 10 is by the DC quantity of current signal, different subharmonic amount is accurately extracted, and deliver to human-computer interaction interface 13 for user by central processing unit 11 and provide accurate, current information timely, in addition, the setting can carrying out multiple process parameter (as parameters such as integral time) at human-computer interaction interface 13 is needed according to user's difference, under the control of central processing unit 11, by parameter downloads module 12, setup parameter is exported, and be downloaded to bottom digital information processing system 3, the new energy of digital-to-analog conversion of completing user expectation.
Claims (1)
1. one kind is applicable to the digital and analogue signals intelligent conversion system of digital output optical fibre current sensor, the digital interface that fibre optic current sensor exports send/receive device (1) with the first digital signal of native system and is connected, first digital signal sending/receiving device (1) is connected with bottom digital information processing system (3), bottom digital information processing system (3) is connected with advanced digital signal disposal system (5) by the second digital signal sending/receiving device (2), in addition, bottom digital information processing system (3) is connected with high precision digiverter (4), it is characterized in that:
The high speed processing unit (6) of high precision digiverter (4) is connected with conditioner (7), the output terminal of conditioner (7) is connected with amplifier (8), amplifier (8) is connected with digital to analog converter (9) again, and digital to analog converter (9) is connected with high speed processing unit (6) again; The signal separation module (10) of advanced digital signal disposal system (5) is connected with high speed processing unit (6) again, conditioner (7) exports high-accuracy voltage, current analog signal, used for rectification, control system;
The signal separation module (10) of advanced digital signal disposal system (5) is connected with central processing unit (11), and central processing unit (11) is connected with parameter downloads module (12) with human-computer interaction interface (13) respectively, advanced digital signal disposal system (5) receives the digital signal of bottom digital information processing system (3), entering signal separation module (10), under the control of central processing unit (11), signal separation module (10) is by the DC quantity of current signal, different subharmonic amount is accurately extracted, and deliver to human-computer interaction interface (13) for user by central processing unit (11) and provide accurate, current information timely, in addition, the setting carrying out multiple process parameter at human-computer interaction interface (13) is needed according to user's difference, under the control of central processing unit (11), by parameter downloads module (12), setup parameter is exported, and be downloaded to bottom digital information processing system (3), with the analog conversion function that completing user is expected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110445639.7A CN102778603B (en) | 2011-12-27 | 2011-12-27 | A kind of optical fiber current sensor signal intelligent system |
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| CN201110445639.7A CN102778603B (en) | 2011-12-27 | 2011-12-27 | A kind of optical fiber current sensor signal intelligent system |
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| CN102778603A CN102778603A (en) | 2012-11-14 |
| CN102778603B true CN102778603B (en) | 2015-07-29 |
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| CN201035057Y (en) * | 2007-04-30 | 2008-03-12 | 武汉光迅科技股份有限公司 | Wide range optical fiber current sensor and measurement mechanism thereof |
| CN201247401Y (en) * | 2008-08-25 | 2009-05-27 | 中国矿业大学 | Apparatus for collecting and processing signal of subway stray current optical fiber sensing system |
| CN101620244A (en) * | 2008-06-30 | 2010-01-06 | 上海新跃仪表厂 | Closed-loop detection circuit of interferential full optical-fiber current mutual inductor |
| CN101957399A (en) * | 2010-09-21 | 2011-01-26 | 中国电力科学研究院 | Digital closed loop type optical fiber current sensor |
| CN202421314U (en) * | 2011-12-27 | 2012-09-05 | 湖北迅迪科技有限公司 | Signal intelligence system for optical fiber current sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005345350A (en) * | 2004-06-04 | 2005-12-15 | East Japan Railway Co | Optical fiber current sensor, and calibration device therefor |
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Patent Citations (5)
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| CN201035057Y (en) * | 2007-04-30 | 2008-03-12 | 武汉光迅科技股份有限公司 | Wide range optical fiber current sensor and measurement mechanism thereof |
| CN101620244A (en) * | 2008-06-30 | 2010-01-06 | 上海新跃仪表厂 | Closed-loop detection circuit of interferential full optical-fiber current mutual inductor |
| CN201247401Y (en) * | 2008-08-25 | 2009-05-27 | 中国矿业大学 | Apparatus for collecting and processing signal of subway stray current optical fiber sensing system |
| CN101957399A (en) * | 2010-09-21 | 2011-01-26 | 中国电力科学研究院 | Digital closed loop type optical fiber current sensor |
| CN202421314U (en) * | 2011-12-27 | 2012-09-05 | 湖北迅迪科技有限公司 | Signal intelligence system for optical fiber current sensor |
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| 光学电流传感器数字信号处理系统的研究;张艳;《中国优秀硕士论文全文数据库信息科技辑》;20050228(第2期);I140-72 * |
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