CN203085344U - Integrated digital current transformer - Google Patents
Integrated digital current transformer Download PDFInfo
- Publication number
- CN203085344U CN203085344U CN 201220334953 CN201220334953U CN203085344U CN 203085344 U CN203085344 U CN 203085344U CN 201220334953 CN201220334953 CN 201220334953 CN 201220334953 U CN201220334953 U CN 201220334953U CN 203085344 U CN203085344 U CN 203085344U
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- Prior art keywords
- current transformer
- iron
- coil
- cable
- integrated digital
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 23
- 230000001939 inductive effect Effects 0.000 claims abstract description 16
- 238000004891 communication Methods 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000005070 sampling Methods 0.000 claims abstract description 8
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 230000000875 corresponding Effects 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000004458 analytical method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001131 transforming Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model discloses an integrated digital current transformer which comprises the following components: two split iron core coils, an indicating lamp, a communication interface and an outer housing. The current transformer is internally provided with a circuit board. The two split iron core coils are respectively designed to the split type and can be equipped on a cable without cable breakage, wherein one split iron core coil is an induction powering switch. Electric energy is generated through inducing the magnetic field which passes through the surrounding part of the cable of the iron core coil, and the electric energy is supplied to the circuit board for operation, wherein the other split iron core coil is a detection coil. The value of the current which passes through the cable of the iron core coil is detected and converted to a corresponding analog signal through a sampling module. After the analog signal is converted to a digital signal through an analog-to-digital conversion module of the circuit board, the digital signal is transmitted out through a CAN controller. According to the integrated digital current transformer, electricity is supplied through the induction powering switch, no external power supply is required. Furthermore the digital signal can be directly output without an additional acquisition module. The measurement precision is improved and simultaneously long-distance transmission is facilitated.
Description
Technical field
The utility model relates to a kind of current transformer, relates in particular to a kind of integrated digital current transformer.
Background technology
Instrument transformer is the equipment of scaling transformation voltage or electric current, and its function is that high voltage or big electric current scaling transformation are become standard low-voltage or the little electric current of standard, so that realize measuring instrument, protection equipment, and standardization, the miniaturization of automatic control equipment.In addition, instrument transformer can also be used to separating high-voltage system, to guarantee the safety of the person and equipment.Current transformer is the parts that carry out current conversion according to electromagnetic induction principle, is widely used in the electric power system, plays unsteady flow and electrical isolation.
At present the current transformer that uses is generally Wiring type or punching, and its iron core and shell are the closed type setting, and iron core is the annular that seals or square.When mounted, cable must be taken apart, just must after outage, just can install or operation such as dismounting, the operation more complicated, even can influence the normal operation of power supply unit, influenced people's normal electricity consumption.
Existing general current transformer, it can only accomplish detection streamer running current value, and the function of direct output AC analog signals.The data transmission distance of this ac analog signal is very near can't carry out long-distance transmissions, just can carry out long-distance transmissions after must analog signals being converted to digital signal by the acquisition module that other establishes, and equipment cost is comparatively expensive.In addition, because analog signals can produce decay in various degree because of the length difference of lead in transmission course, thereby influence certainty of measurement.Simultaneously, analog signals is interfered easily, therefore also can influence the authenticity of measurement.
Summary of the invention
The purpose of this utility model is, a kind of integrated digital current transformer is provided, and it is powered by induced current, need not externally fed, and directly exports digital signal and need not acquisition module, is beneficial to long Distance Transmission when improving certainty of measurement.
[0006]The utility model discloses the integrated digital current transformer, it comprises two open-close type iron-core coils, indicator light, communication interface, shell body, and this current transformer inside is provided with circuit board.Two open-close type iron-core coils all adopt the open-close type design need not disconnect cable can be installed on the cable, one of them open-close type iron-core coil is induction power taking coil, pass iron-core coil cable magnetic field generation electric energy supply circuit plate on every side by induction and carry out work, wherein another open-close type iron-core coil is a magnetic test coil, thereby detection is passed the current value of iron-core coil cable and is converted to corresponding simulating signal with it by sampling module, and the analog-to-digital conversion module of this analog passband signal oversampling circuit plate is gone out with digital data transmission by the CAN controller after being converted to digital signal.
The utility model adopts the open-close type design, and two semi-round ring shape housings of plastic casing form a closed circle ring type, and make two iron-core coil closures by the holding screw installation that cooperatively interacts.
The built-in circuit board of the utility model is provided with rectification circuit, DC/DC change-over circuit, induction power taking coil will respond to the electric energy that produces by rectification circuit and DC/DC change-over circuit output burning voltage after, pass through power module and provide the operation power supply for the entire circuit plate.
The utility model is adopted communication interface for adopting the CAN bus communication interface of CAN agreement.
Two iron-core coils that the utility model is adopted include two open-close type semicircular ring iron cores that are oppositely arranged, and these two iron cores all are filled with ambroin.
In the utility model, include two iron-core coils in the described integrated digital current transformer, these two iron-core coils all adopt the setting of open-close type iron core, wherein an iron core is induction power taking coil, another iron core is a magnetic test coil, this induction power taking coil and rectification circuit electrically connect, and magnetic test coil and sampling module electrically connect.
Integrated digital current transformer of the present utility model, it selects the super low-power consumption element for use, realized powering by induced current, need not externally fed, directly the output digital signal need not acquisition controller, guarantee primary signal not decay and interference, when improving certainty of measurement, greatly reduce engineering difficulty and expense.
Description of drawings
Fig. 1 is the external structure schematic diagram of a kind of specific embodiment of the utility model integrated digital current transformer;
Fig. 2 is the semi-section structural representation of a kind of specific embodiment of integrated digital current transformer among Fig. 1;
Fig. 3 is the cross-sectional view of plastic casing in the utility model;
Fig. 4 is the module diagram of a kind of specific embodiment of the utility model integrated digital current transformer.
Embodiment
Shown in Fig. 1-4, the utility model provides a kind of integrated digital current transformer, it comprises: shell body 3, be located at circuit board 6 in shell body 3 bottoms, be located at the indicator light 1 of shell body 3 bottoms,, be located at two iron-core coils 4,7 in the shell body 3, described shell body 3 bottoms are provided with external communication interface 2; Circuit board 6 is provided with rectification circuit 61, DC/DC change-over circuit 62, power module 63, sampling module 64, D/A converter module 65, operational analysis module 66, CAN controller 67, shell body 3 is the semi-round ring shape housing that two cooperations are installed, two iron cores 4,7 all adopt the setting of open-close type iron core, wherein an iron core 4 is induction power taking coil, another iron core 7 is a magnetic test coil, this induction power taking coil 4 electrically connects with rectification circuit 61, magnetic test coil 7 electrically connects with sampling module 64, and described external communication interface 2 can be connected with data acquisition unit by the CAN bus.
Wherein, described shell body 3 is provided with holding screw 5, and two semi-round ring shape housings of shell body 3 form a close ring by the installation that cooperatively interacts of this holding screw 5.During use, not needing to cut off cable can be installed on this integrated digital current transformer above the cable by two semi-round ring shape housings, makes current transformer form the coil of a closure, operates comparatively simple, greatly reduce difficulty of construction, can not influence the normal operation of power supply unit.In the utility model specific embodiment, described shell body also is provided with indicator light 1 on 3 bottoms, and this indicator light 1 can show the operating state of integrated digital current transformer.
Induction power taking coil 4 of the present utility model is transformed to DC power supply with the electric energy sensed after by rectification circuit 61 rectifications, this DC power supply is transferred to power module 63 reduce to the relevant work voltage of analog-to-digital conversion module 65 grades by 62 step-downs of DC/DC change-over circuit after, provides normal working power by D/A converter module 65, operational analysis module 66, CAN controller 67 on 63 pairs of circuit boards 6 of power module.
Magnetic test coil 7 of the present utility model is exported corresponding analog data with running current by sampling module 64 sampling backs after responding to the running current that detects cable, be converted to digital signal by analog-to-digital conversion module 65, this digital signal is transmitted by the communication mode of CAN controller 67 with the CAN bus after carrying out the data analysis verification through operational analysis module 66.The communication mode of this CAN bus has the higher signal transmission rate, and the signal transmission is more safe and reliable.
As a kind of selectivity embodiment of the present utility model, described external communication interface 2 is for adopting the CAN bus communication interface of CAN agreement, can be by this communication interface with the digital signal remote transmission to the host computer monitoring equipment, can realize reaching 1 kilometer signal transmission and, guarantee the authenticity of measuring without any loss.
In addition, two iron cores 4,7 of the present utility model include two open-close type semicircular ring iron cores that are oppositely arranged, and are filled with ambroin between these two iron cores 4,7., can also be between two iron cores 4,7 insulating material such as potting resin glue, silica gel or rubber, guarantee the electric induction performance of this integrated digital current transformer.
In sum, incorporate digital current instrument transformer of the present utility model, it selects the super low-power consumption element for use, realized powering by induced current, need not externally fed, directly export digital signal and need not acquisition module, guarantee primary signal not decay and interference, when improving certainty of measurement, greatly reduce engineering difficulty and expense.
The above; for the person of ordinary skill of the art; can make other various corresponding changes and distortion according to the technical solution of the utility model and technical conceive, and all these changes and distortion all should belong to the protection range of the utility model accompanying Claim.
Claims (5)
1. integrated digital current transformer, it comprises two open-close type iron-core coils, indicator light, communication interface, shell body, this current transformer inside is provided with circuit board, two open-close type iron-core coils all adopt the open-close type design need not disconnect cable can be installed on the cable, one of them open-close type iron-core coil is induction power taking coil, pass iron-core coil cable magnetic field generation electric energy supply circuit plate on every side by induction and carry out work, wherein another open-close type iron-core coil is a magnetic test coil, thereby detection is passed the current value of iron-core coil cable and is converted to corresponding simulating signal with it by sampling module, and the analog-to-digital conversion module of this analog passband signal oversampling circuit plate is gone out with digital data transmission by the CAN controller after being converted to digital signal; The integrated digital current transformer need not externally fed by induction power taking coil power supply, and need not other acquisition module and can directly export digital signal, is beneficial to long Distance Transmission when improving certainty of measurement.
2. integrated digital current transformer as claimed in claim 1 is characterized in that adopting open-close type design, and two semi-round ring shape housings of plastic casing form a closed circle ring type, and make two iron-core coil closures by the holding screw installation that cooperatively interacts.
3. integrated digital current transformer as claimed in claim 1, it is characterized in that circuit board is provided with rectification circuit, DC/DC change-over circuit, induction power taking coil will respond to the electric energy that produces by rectification circuit and DC/DC change-over circuit output burning voltage after, pass through power module and provide the operation power supply for the entire circuit plate.
4. integrated digital current transformer as claimed in claim 1 is characterized in that communication interface is to adopt the CAN bus communication interface of CAN agreement.
5. integrated digital current transformer as claimed in claim 1 is characterized in that two iron-core coils include two open-close type semicircular ring iron cores that are oppositely arranged, and these two iron cores all are filled with ambroin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220334953 CN203085344U (en) | 2012-07-12 | 2012-07-12 | Integrated digital current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220334953 CN203085344U (en) | 2012-07-12 | 2012-07-12 | Integrated digital current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203085344U true CN203085344U (en) | 2013-07-24 |
Family
ID=48831160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220334953 Expired - Fee Related CN203085344U (en) | 2012-07-12 | 2012-07-12 | Integrated digital current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203085344U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605045A (en) * | 2013-11-01 | 2014-02-26 | 航天科工深圳（集团）有限公司 | Power transmission line fault detection device |
| CN103675431A (en) * | 2013-12-03 | 2014-03-26 | 浙江华采科技有限公司 | Current collecting device on power transmission line |
| CN103675407A (en) * | 2013-12-03 | 2014-03-26 | 浙江华采科技有限公司 | Strut-type current collection device for power transmission lines |
| CN104569532A (en) * | 2015-01-29 | 2015-04-29 | 国家电网公司 | Collecting-combining-integrated device of electronic transformer |
| CN106053913A (en) * | 2016-05-03 | 2016-10-26 | 北京铁道工程机电技术研究所有限公司 | Field bus type AC current transformer |
| CN106226576A (en) * | 2016-05-03 | 2016-12-14 | 北京铁道工程机电技术研究所有限公司 | A kind of field bus type AC voltage transformer |
| CN109686067A (en) * | 2018-11-29 | 2019-04-26 | 江阴市星火电子科技有限公司 | Multi-serial port parallel connection communicates mutual inductor |
| CN109741584A (en) * | 2018-11-29 | 2019-05-10 | 江阴市星火电子科技有限公司 | A kind of Multi-serial port parallel connection communication mutual inductor |
| CN111751656A (en) * | 2020-06-05 | 2020-10-09 | 水木源华电气有限公司 | Voltage and current measurement energy-taking device for power transmission and distribution line |
-
2012
- 2012-07-12 CN CN 201220334953 patent/CN203085344U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605045A (en) * | 2013-11-01 | 2014-02-26 | 航天科工深圳（集团）有限公司 | Power transmission line fault detection device |
| CN103605045B (en) * | 2013-11-01 | 2016-05-11 | 航天科工深圳（集团）有限公司 | A kind of failure detection device for power transmission line |
| CN103675431A (en) * | 2013-12-03 | 2014-03-26 | 浙江华采科技有限公司 | Current collecting device on power transmission line |
| CN103675407A (en) * | 2013-12-03 | 2014-03-26 | 浙江华采科技有限公司 | Strut-type current collection device for power transmission lines |
| CN104569532A (en) * | 2015-01-29 | 2015-04-29 | 国家电网公司 | Collecting-combining-integrated device of electronic transformer |
| CN106053913A (en) * | 2016-05-03 | 2016-10-26 | 北京铁道工程机电技术研究所有限公司 | Field bus type AC current transformer |
| CN106226576A (en) * | 2016-05-03 | 2016-12-14 | 北京铁道工程机电技术研究所有限公司 | A kind of field bus type AC voltage transformer |
| CN109686067A (en) * | 2018-11-29 | 2019-04-26 | 江阴市星火电子科技有限公司 | Multi-serial port parallel connection communicates mutual inductor |
| CN109741584A (en) * | 2018-11-29 | 2019-05-10 | 江阴市星火电子科技有限公司 | A kind of Multi-serial port parallel connection communication mutual inductor |
| CN109741584B (en) * | 2018-11-29 | 2020-04-28 | 江阴市星火电子科技有限公司 | Multi-serial-port parallel communication transformer |
| CN111751656A (en) * | 2020-06-05 | 2020-10-09 | 水木源华电气有限公司 | Voltage and current measurement energy-taking device for power transmission and distribution line |
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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: 20130724 Termination date: 20150712 |
|
| EXPY | Termination of patent right or utility model |