CN201434883Y - Rogowski coil electric quantity transducer - Google Patents
Rogowski coil electric quantity transducer Download PDFInfo
- Publication number
- CN201434883Y CN201434883Y CN2009201326116U CN200920132611U CN201434883Y CN 201434883 Y CN201434883 Y CN 201434883Y CN 2009201326116 U CN2009201326116 U CN 2009201326116U CN 200920132611 U CN200920132611 U CN 200920132611U CN 201434883 Y CN201434883 Y CN 201434883Y
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Abstract
Disclosed is a rogowski coil electric quantity transducer. The electric quantity transducer comprises a transformer, a signal conditioning module and a signal converting module which are in sequentialseries connection according to the signal input sequence, and is characterized by further comprising an auxiliary power supply module for providing a working power supply for the signal conditioningmodule and the signal converting module. Besides, the transformer is a rogowski coil. The rogowski coil electric quantity transducer is large in current measurement range, wide in measurement frequency band, high in measurement precision, light in weight, small in volume and strong in interference resistant capability.
Description
[technical field]
The utility model relates to a kind of electric parameters transducer, particularly a kind of Luo-coil electric parameters transducer.
[background technology]
The electric parameters transducer of selling in the market and using all is that mutual inductor, optocoupler and the hall device of employing technology comparative maturity carries out electric weight isolation, sampling.The product that utilizes these conventional arts to make comes with some shortcomings, and the one, current measuring range is little, usually in the hundreds of ampere; The 2nd, conversion accuracy is relatively poor, is difficult to make be better than 0.1 grade electric parameters transducer; The 3rd, frequency characteristic is poor, and response speed is slow, is unfavorable for the electric current that peak-valley difference changes is greatly monitored in real time.
Luo-coil is the abbreviation of Rogowski (Rogowski) coil, and it is a kind ofly to make the high precision current transformer of coiling skeleton without ferromagnetic material, utilizes it can develop the high-performance of plurality of specifications and purposes, high-precision ac electric transmitter.
The theoretical establishment of the application foundation of Luo-coil has the history that goes up a century, but for a long time owing to lack the supporting technology support of advanced realization industrialization, measuring-signal conditioning, conversion and long-distance transmissions technology as the advanced person, advanced process manufacturing technology, and advanced type approval test condition and production equipment technology.So, really develop practical Luo-coil product, still in the eighties in the last century of new and high technology develop rapidly.As the Rocoil company of Britain, the Development and Production that takes the lead in goes out can be widely used in generating electricity, power transmission and distribution, metallurgy, mining, weight equipment manufacturing, the Luo-coil current detecting transmitter in field such as control and military affairs automatically.
Owing to do not contain ferromagnetic material in the Luo-coil, compare with traditional great current mutual inductor, it is not only in light weight, and under the situation that load current (primary measured current) peak-valley difference changes significantly, parameters such as coil-induced output signal size, response time and the linearity can not be subjected to the influence of hysteresis effect and magnetic saturation phenomenon.Therefore, use the Luo-coil electric parameters transducer that following outstanding feature is arranged:
Current measuring range is big---and milliampere (mA) level is to megampere (MA) level;
Bandwidth---0.1Hz is to 1MHz in measurement;
The measuring accuracy height---0.1 to 1.0 grade;
Isolation voltage withstand class height between coil and tested current return can be from several kilovolts to up to a hundred kilovolts;
In light weight, volume is little, and is easy for installation, antijamming capability is strong;
Safe in utilization, compliance with environmental protection requirements etc.
Based on these characteristics of Luo-coil, it has the development trend that replaces traditional electromagnetic current transducer in the part.
[utility model content]
For overcoming above-mentioned technological deficiency, the inventor of the utility model patent is through studying for a long period of time, proposed that a kind of current measuring range is big, current conversion precision height and frequency characteristic height, the fast variable transmitter of response speed.
The utility model can be realized by following scheme: a kind of Luo-coil electric parameters transducer, comprise the mutual inductor, signal condition module, the signal conversion module that connect successively according to the signal input sequence, it is characterized in that: also be included as the accessory power supply module that described signal condition module, signal conversion module provide working power, described mutual inductor is a Luo-coil.
The microprocessor of described signal conversion module is PSOC (Programmable System on a Chip, a programmable system on chip) microprocessor.
Described signal conversion module input end is connected with digital signal interface with analog signal interface respectively, and described signal conversion module can convert input signal to simulating signal and digital signal.
Described accessory power supply module is the DC/DC power module.
Described accessory power supply module is the AC/DC power module.
The beneficial effects of the utility model are: (1) the utility model has been owing to adopted Luo-coil as mutual inductor, and current measuring range is big, measure bandwidth, measuring accuracy height, and in light weight, volume is little, and is easy for installation, antijamming capability is strong; (2) signal conversion module of the present utility model is by user's user demand, be convertible into simulating signal and digital signal, the conventional electric weight detector of both being convenient to use with the user is connected, and also is convenient to dock with the digital communication interface of user's detection system, can realize the network management to industry spot information; (3) accessory power supply of the present utility model adopts DC/DC or AC/DC insulating power supply module, guarantees the precision of product, improves the antijamming capability of product.
[description of drawings]
Fig. 1 is the utility model theory diagram;
Fig. 2 is a pcb board Luo-coil structural drawing of the present utility model.
Fig. 3 is a circuit diagram of the present utility model.
[embodiment]
Below in conjunction with specific embodiment the utility model is elaborated.
The utility model theory diagram as shown in Figure 1, Luo-coil electric parameters transducer of the present utility model is made of Luo-coil, signal condition module, signal conversion module, accessory power supply module four parts.Wherein Luo-coil plays electric current detection and electrical isolation effect.When having electric current to pass through in the conductor that passes Luo-coil (bus), the size of induction output voltage will be linear change along with the size of tested electric current in the Luo-coil.Measurement can be adopted the rigidity Luo-coil during less than the electric current of 1000A and the big electric current of transient state, when measuring the electric current greater than 1000A, can adopt flexible Luo-coil.
Signal condition module of the present utility model, signal conversion module and accessory power supply module constitute the intellectuality processing and the change that record electric weight and send part.Wherein the function of signal condition module is with the detected signal of Luo-coil, carry out conditioning such as range conversion, filtering, amplification with electronic circuit after, give signal conversion module and handle again.It is that core constitutes that the conversion of signal conversion module and output adopt advanced PSOC microprocessor.It can be by user's user demand,, is converted to and can reflect simulating signal tested electric weight size, that meet industrial standard (as 0-5VDC, 4-20mA etc.) and the output of digital signal wireless communication signal strictly according to the facts input signal by the program in the microprocessor of residing in.The conventional electric quantity monitoring instrument that it both had been convenient to use with the user is connected, and also is convenient to dock with the digital communication interface of user's TT﹠C system, to realize the networking management of industry spot information.Accessory power supply is the working power that product uses, and adopts DC/DC or AC/DC insulating power supply module, has guaranteed the precision of product, improves the antijamming capability of product.
Pcb board Luo-coil structural drawing of the present utility model can adopt multiple version as shown in Figure 2.Circuit diagram of the present utility model as shown in Figure 3.。
In sum; although the utility model is described in detail the utility model structure by specific embodiment; but persons skilled in the art should be understood that; the foregoing description only is the description to preferred embodiment of the present utility model; but not to the restriction of the utility model protection domain; persons skilled in the art are in the disclosed technical scope of the utility model, and the variation that can expect easily is all within protection domain of the present utility model.
Claims (5)
1, a kind of Luo-coil electric parameters transducer, comprise the mutual inductor, signal condition module, the signal conversion module that connect successively according to the signal input sequence, it is characterized in that: also be included as the accessory power supply module that described signal condition module, signal conversion module provide working power, described mutual inductor is a Luo-coil.
2, Luo-coil electric parameters transducer as claimed in claim 1 is characterized in that: the microprocessor of described signal conversion module is the PSOC microprocessor.
3, Luo-coil electric parameters transducer as claimed in claim 2, it is characterized in that: described signal conversion module output terminal is connected with digital signal interface with analog signal interface respectively, and described signal conversion module can convert input signal to simulating signal and digital signal.
4, Luo-coil electric parameters transducer as claimed in claim 1 is characterized in that: described accessory power supply module is the DC/DC power module.
5, Luo-coil electric parameters transducer as claimed in claim 1 is characterized in that: described accessory power supply module is the AC/DC power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201326116U CN201434883Y (en) | 2009-06-08 | 2009-06-08 | Rogowski coil electric quantity transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201326116U CN201434883Y (en) | 2009-06-08 | 2009-06-08 | Rogowski coil electric quantity transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201434883Y true CN201434883Y (en) | 2010-03-31 |
Family
ID=42053696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201326116U Expired - Fee Related CN201434883Y (en) | 2009-06-08 | 2009-06-08 | Rogowski coil electric quantity transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201434883Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093547A (en) * | 2016-08-04 | 2016-11-09 | 贵州电网有限责任公司电力科学研究院 | Rogowski coil current transformer measuring device and method based on auxiliary coil correction |
| CN108303617A (en) * | 2018-02-02 | 2018-07-20 | 西安沣源智能装备科技有限公司 | A kind of fault location system |
| CN109100558A (en) * | 2018-06-06 | 2018-12-28 | 中国电力科学研究院有限公司 | A kind of Rogowski coil and current measuring device |
-
2009
- 2009-06-08 CN CN2009201326116U patent/CN201434883Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093547A (en) * | 2016-08-04 | 2016-11-09 | 贵州电网有限责任公司电力科学研究院 | Rogowski coil current transformer measuring device and method based on auxiliary coil correction |
| CN106093547B (en) * | 2016-08-04 | 2019-06-11 | 贵州电网有限责任公司电力科学研究院 | Rogowski coil current transformer measuring device and method based on auxiliary coil correction |
| CN108303617A (en) * | 2018-02-02 | 2018-07-20 | 西安沣源智能装备科技有限公司 | A kind of fault location system |
| CN109100558A (en) * | 2018-06-06 | 2018-12-28 | 中国电力科学研究院有限公司 | A kind of Rogowski coil and current measuring device |
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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: 20100331 Termination date: 20170608 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |