CN107505496A - A kind of current detector - Google Patents
A kind of current detector Download PDFInfo
- Publication number
- CN107505496A CN107505496A CN201710898317.5A CN201710898317A CN107505496A CN 107505496 A CN107505496 A CN 107505496A CN 201710898317 A CN201710898317 A CN 201710898317A CN 107505496 A CN107505496 A CN 107505496A
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- current detector
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- 238000012545 processing Methods 0.000 claims abstract description 56
- 238000001514 detection method Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 24
- 230000008569 process Effects 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 238000001914 filtration Methods 0.000 claims abstract description 14
- 238000013519 translation Methods 0.000 claims abstract description 11
- 238000004891 communication Methods 0.000 claims abstract description 10
- 230000035939 shock Effects 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
- G01R15/181—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using coils without a magnetic core, e.g. Rogowski coils
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Current Or Voltage (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The present invention relates to a kind of current detector, the current detector includes housing and the inductance coil and detection process device that are encapsulated in the housing, and the inductance coil is the coil of semi-closed shape, and the detection process device includes：Power module, anti-clutter circuit, oscillating circuit, waveform translation circuit, current-voltage conversion circuit, filtering and amplifying circuit, processing module, switching circuit and the wireless communication module communicated for realizing the processing module and external equipment.The current detector of the present invention by inductance coil by being designed to semi-closed shape, so that the installation and removal of current detector are more convenient；By setting anti-clutter circuit effectively to avoid current detector, judged by accident because of outside electromagnetic interference；The current detector of the present invention has the advantages of mounting and dismounting high convenient, monitoring accuracy and small power consumption.
Description
Technical field
The present invention relates to fuse technologies field, and in particular to a kind of current detector.
Background technology
In power network construction, to protect transformer or distribution line, often using fuse.Existing fuse is mainly applicable
In rated voltage 24kV, below rated current 100A, frequency 50Hz distribution line and distribution transformer in, as overload and it is short
Road is protected and divided, conjunction rated load current is used.Its products characteristics：Fuse is by pedestal, arc-extinction device two large divisions's group
Into.When fuse is in closing position, dynamic and static contact is compressed by compression spring, to ensure there is enough pressure between contact, is disappeared
Arc cylinder lower end is equipped with rotatable torque spring, and after melt loads, compression spring is compressed, and fuse is in tension, with
Ensure expulsion tube self-locking in closing position.When circuit overload or short-circuit melt fuse, fuse by means of torque spring work
With being pulled out out of molten fuse unit rapidly, while the heat energy of electric arc produces a large amount of arc extinguishing gases in extinguishing arc cylinder, electric arc is put out rapidly
Go out, to reduce the arc time.After arc extinction, fusion tube is being conducted oneself with dignity and in the presence of compression spring, is representing that cylinder drops to sealing group
Outside building, clearly visible fracture is realized.The real-time status of fuse can be supervised by installing current detector on fuse
Survey, but the coil of existing current detector, because the structure by coil is limited, causes current detecting in the annular of closure
The installation and removal inconvenience of device, further, since the circuit design of existing current detector is unreasonable, when external environment condition changes
When the electric current of change (temperature of magnetic field or external environment condition changes) or device interior fluctuates, may all electric current be caused to be examined
Device erroneous judgement is surveyed, so as to reduce the accuracy of current detector monitoring, in addition, existing current detector uses uninterrupted monitoring,
Power consumption is larger, causes service time of battery shorter.
The content of the invention
It is an object of the invention to provide a kind of current detector, to solve existing current detector exist installation and
The problem of dismounting is inconvenient, the accuracy of monitoring is relatively low and power consumption is big.
To achieve the above object, the present invention provides a kind of current detector, and the current detector includes housing and envelope
Inductance coil and detection process device in the housing, the inductance coil be semi-closed shape coil, the inspection
Surveying processing unit includes：
Power module；
It is connected with the inductance coil, for the anti-clutter circuit for preventing circuit from being influenceed from external electromagnetic interference；
It is connected with the anti-clutter circuit, the oscillating circuit in a stabilization signal source is collectively formed with the inductance coil,
In the presence of the inductance coil has sensed metal, the frequency of the electric signal of the oscillating circuit output changes；
It is connected with the oscillating circuit, for exporting rising edge and the trailing edge shaping of electric signal to the oscillating circuit
Waveform translation circuit；
It is connected with the anti-clutter circuit, the current signal for the inductance coil to be exported changes into voltage signal
Current-voltage conversion circuit；
It is connected with the current-voltage conversion circuit, the voltage signal for being exported to the current-voltage conversion circuit enters
Row amplification and the filtering and amplifying circuit of filtering process；
It is connected respectively with waveform translation circuit, power module, filtering and amplifying circuit, for the electric signal and the electricity
The processing module that pressure signal is detected and handled；
It is connected respectively with current-voltage conversion circuit, oscillating circuit, processing module, for controlling oscillating circuit, electricity respectively
Flow conducting and the switching circuit disconnected between voltage conversion circuit and the inductance coil.
It is connected with the processing module, the wireless telecommunications mould communicated for realizing the processing module and external equipment
Block.
Preferably, the wireless communication module is RF wireless modules, and the RF wireless modules are connected with the processing module.
Preferably, the detection process device also includes serial line interface, and the serial line interface is connected with the processing module.
Preferably, the serial line interface is RS232 interface.
Preferably, the detection process device also includes being used to measure external temperature value, and converts it into temperature telecommunications
The temperature-measuring module of processing module number is sent to, the temperature-measuring module is connected with the processing module.
Preferably, the detection process device also includes being used to detect exterior vibration information, and converts it into vibrations electricity
Signal is sent to the shock detection module of processing module, and the shock detection module is connected with the processing module.
Preferably, the detection process device also includes being connected with the processing module, for being carried to the processing module
For the clock module of clock signal.
Preferably, the processing module is single-chip microcomputer.
Preferably, the inductance coil is U-shaped or c-type.
Preferably, the anti-clutter circuit is EMC circuits.
The invention has the advantages that：The present invention current detector by the way that inductance coil is designed into semi-closed shape,
So that the installation and removal of current detector are more convenient；By setting anti-clutter circuit effectively to avoid current detector,
Judged by accident because of outside electromagnetic interference；The current detector of the present invention has installation and removal convenient, monitoring accurate
Property high and small power consumption the advantages of.
Brief description of the drawings
Fig. 1 is the structured flowchart of detection process device in the embodiment of the present invention 1.
Fig. 2 is the main structure diagram of current detector housing of the present invention.
Fig. 3 is the overlooking the structure diagram that current detector of the present invention takes down upper shell after lower house.
Fig. 4 is the structured flowchart of detection process device in the embodiment of the present invention 2.
Embodiment
Following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.
Embodiment 1
As shown in Figure 1, 2, 3, the current detector includes housing 15, inductance coil 2 and detection process device 16, housing 15
Including upper shell 151 and the lower house being interlocked with upper shell 151 152, the inside of housing 15 has wiring board accommodating chamber and line
Accommodating chamber is enclosed, coil accommodating chamber is used to install inductance coil 2, and coil accommodating chamber is C-shaped, naturally it is also possible to U-shaped or other shapes
Shape.Coil accommodating chamber is used to install wiring board and power module, and wiring board accommodating chamber is in cuboid, wiring board accommodating chamber and coil
The arch connection of accommodating chamber.Inductance coil 2 is entwined by multi-turn copper wire, and inductance coil 2 is C-shaped, naturally it is also possible to it is U-shaped or
Other shapes, the insulating tape to be shielded to inductance coil 2 is wound with outside inductance coil 2.Detection process device 16 wraps
Include power module 1, anti-clutter circuit 3, oscillating circuit 4, waveform translation circuit 6, current-voltage conversion circuit 5, amplification filtered electrical
Road 7, processing module 9, switching circuit 8 and wireless communication module 10.
Power module 1 is connected with processing module 9, and power module 1 is lithium battery in the present embodiment, and lithium battery is processing mould
Block 9 provides 3.3V or so operating voltage.
Anti-clutter circuit 3 is connected with inductance coil 2, and anti-clutter circuit 3 is used to prevent circuit from external electromagnetic interference shadow
Ring, if external electromagnetic interference signal can cause processing module 9 to be judged by accident into the circuit of detection process device 16, and prevent
Interference circuit 3 can effectively eliminate the electromagnetic interference signal in the circuit of detection process device 16.In the present embodiment, anti-clutter circuit
3 be EMC circuits, and anti-clutter circuit 3 can be also struck by lightning in the circuit of detection process device 16 or during high-pressure electrostatic in addition, to inspection
The circuit for surveying processing unit 16 is protected.
Oscillating circuit 4 is connected with anti-clutter circuit 3, and oscillating circuit 4 collectively forms a stable signal with inductance coil 2
Source, in the presence of there is no metal in the induction region of inductance coil 2, oscillating circuit 4 export electric signal frequency be it is fixed, when
In the presence of inductance coil 2 has sensed metal, the frequency for the electric signal that oscillating circuit 4 exports will change, so as to detect
The circle induction region of inductance coil 2 is with the presence of metal.
Waveform translation circuit 6 is connected with oscillating circuit 4, and waveform translation circuit 6 is used to export electric signal to oscillating circuit 4
Rising edge and trailing edge shaping, so that processing module 9 can detect to the electric signal.
Current-voltage conversion circuit 5 is connected with anti-clutter circuit 3, and current-voltage conversion circuit 5 is used for inductance coil 2 is defeated
The current signal gone out changes into voltage signal, when the metal in the induction region of inductance coil 2 disappears, the magnetic in inductance coil 2
Flux is changed, and current signal is produced in inductance coil 2 and is exported to current-voltage conversion circuit 5, current-voltage conversion electricity
Current signal is changed into voltage signal and exported to filtering and amplifying circuit 7 by road 5.
Filtering and amplifying circuit 7 is connected with current-voltage conversion circuit 5, and filtering and amplifying circuit 7 is used for current-voltage conversion
The voltage signal that circuit 5 exports is amplified and filtering process, due to the voltage signal that current-voltage conversion circuit 5 exports compared with
It is weak, and wherein containing interference ripple, module 9 can not be directly processed and detected, therefore, it is necessary to filtering and amplifying circuit 7 to voltage signal
Enhanced processing, then exported again to processing module 9 after interference ripple therein is filtered.
Processing module 9 is connected with waveform translation circuit 6, power module 1, filtering and amplifying circuit 7 respectively, and processing module 9 is used
In electric signal and voltage signal are detected and handled, in the present embodiment, processing module 9 is single-chip microcomputer.
Switching circuit 8 is connected with current-voltage conversion circuit 5, oscillating circuit 4, processing module 9 respectively, and switching circuit 8 is used
Turn on and disconnect between oscillating circuit 4, current-voltage conversion circuit 5 and inductance coil 2 in controlling respectively.When the normal work of safety fuse
When making, switching circuit 8 turns on oscillating circuit 4 and inductance coil 2, and now, oscillating circuit 4 is formed with inductance coil 2 to be shaken back
Road；When circuit overload or it is short-circuit when, fuse unit moves downward in fuse, switching circuit 8 by current-voltage conversion circuit 5 with
Inductance coil 2 turns on, and now, current-voltage conversion circuit 5 forms current detection circuit with inductance coil 2, is switched by setting
Circuit 8, current detector are changed into interruption monitoring to fuse monitoring, can substantially reduce the power consumption of current detector, extend power supply
The usage time of module 1.
Wireless communication module 10 is connected with processing module 9, and wireless communication module 10 is used to realize that processing module 9 becomes with distribution
Depressor controller or other external equipments are communicated, and processing module 9 is broken the fuse of detection by wireless communication module 10
Open with Continuity signal and conducting when current signal, by wireless radiofrequency mode be sent to distribution transformer controller or other outside
Portion's equipment, in the present embodiment, wireless communication module 10 are RF wireless modules.
Further, in order to realize human-computer interaction function, detection process device 16 also includes serial line interface 11, serial line interface
11 be RS232 interface, and RS232 interface is connected with processing module 9, and processing module 9 and user terminal can be realized by RS232 interface
Connection, so as to complete debugging or digital independent work.
Embodiment 2
As shown in figure 4, the present embodiment, based on embodiment 1, the present embodiment and the difference of embodiment 1 are, this
Detection process device 16 in embodiment except the power module 1 including being discussed in detail in embodiment 1, anti-clutter circuit 3,
Oscillating circuit 4, waveform translation circuit 6, current-voltage conversion circuit 5, filtering and amplifying circuit 7, processing module 9, switching circuit 8,
Wireless communication module 10 and serial line interface 11, in addition to temperature-measuring module 12, shock detection module 13 and clock module 14.
Temperature-measuring module 12 is connected with processing module 9, temperature-measuring module 12 be used for measure external temperature value and by its
Change into temperature signal and be sent to processing module 9, processing module 9 utilizes preset program after being acquired to temperature signal
The temperature value of outside is calculated, the error caused by temperature of inductance coil 2 is compensated using the temperature value of outside.
Shock detection module 13 is connected with processing module 9, and shock detection module 13 is used to detect exterior vibration information, and will
It changes into vibrations electric signal and is sent to processing module 9 and handles, and processing module 9 is equally using vibration information to follow-up corresponding
Calculating compensates.
Clock module 14 is connected with processing module 9, and clock module 14 is used to provide clock signal to processing module 9, convenient
Processing module 9 records the operating time of fuse.
Although above with general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be modified or improved, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to the scope of protection of present invention.
Claims (10)
1. a kind of current detector, the current detector includes housing and the inductance coil being encapsulated in the housing and inspection
Survey processing unit, it is characterised in that the inductance coil is the coil of semi-closed shape, and the detection process device includes：
Power module；
It is connected with the inductance coil, for the anti-clutter circuit for preventing circuit from being influenceed from external electromagnetic interference；
It is connected with the anti-clutter circuit, the oscillating circuit in a stabilization signal source is collectively formed with the inductance coil, works as institute
State in the presence of inductance coil sensed metal, the frequency of the electric signal of the oscillating circuit output changes；
It is connected with the oscillating circuit, for exporting the rising edge of electric signal and the waveform of trailing edge shaping to the oscillating circuit
Translation circuit；
It is connected with the anti-clutter circuit, the current signal for the inductance coil to be exported changes into the electric current of voltage signal
Voltage conversion circuit；
It is connected with the current-voltage conversion circuit, the voltage signal for being exported to the current-voltage conversion circuit is put
Big and filtering process filtering and amplifying circuit；
It is connected respectively with waveform translation circuit, power module, filtering and amplifying circuit, for the electric signal and voltage letter
Number processing module for being detected and being handled；
It is connected respectively with current-voltage conversion circuit, oscillating circuit, processing module, for controlling oscillating circuit, electric current electricity respectively
Press conducting and the switching circuit disconnected between translation circuit and the inductance coil.
It is connected with the processing module, the wireless communication module communicated for realizing the processing module and external equipment.
2. current detector according to claim 1, it is characterised in that the wireless communication module is RF wireless modules,
The RF wireless modules are connected with the processing module.
3. current detector according to claim 2, it is characterised in that the detection process device also includes serial interface
Mouthful, the serial line interface is connected with the processing module.
4. current detector according to claim 3, it is characterised in that the serial line interface is RS232 interface.
5. current detector according to claim 3, it is characterised in that the detection process device also includes being used to measure
External temperature value, and the temperature-measuring module that temperature signal is sent to processing module is converted it into, the temperature survey mould
Block is connected with the processing module.
6. current detector according to claim 5, it is characterised in that the detection process device also includes being used to detect
Exterior vibration information, and convert it into the shock detection module that vibrations electric signal is sent to processing module, the shock detection
Module is connected with the processing module.
7. current detector according to claim 5, it is characterised in that the detection process device also includes and the place
Module connection is managed, for providing the clock module of clock signal to the processing module.
8. current detector according to claim 7, it is characterised in that the processing module is single-chip microcomputer.
9. current detector according to claim 1, it is characterised in that the inductance coil is U-shaped or c-type.
10. current detector according to claim 1, it is characterised in that the anti-clutter circuit is EMC circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710898317.5A CN107505496B (en) | 2017-09-28 | 2017-09-28 | Current detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710898317.5A CN107505496B (en) | 2017-09-28 | 2017-09-28 | Current detector |
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| Publication Number | Publication Date |
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| CN107505496A true CN107505496A (en) | 2017-12-22 |
| CN107505496B CN107505496B (en) | 2024-07-19 |
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|---|---|---|---|---|
| JPS59151064A (en) * | 1983-02-18 | 1984-08-29 | Hitachi Ltd | Electric current detector |
| CN203405509U (en) * | 2013-07-25 | 2014-01-22 | 广西电网公司南宁供电局 | A high-voltage cable instantaneous short circuit fault current detecting apparatus designed by a Rogowski Coil |
| JP2014119345A (en) * | 2012-12-17 | 2014-06-30 | Fuji Electric Fa Components & Systems Co Ltd | Current detector |
| CN105242098A (en) * | 2015-11-16 | 2016-01-13 | 四川华索自动化信息工程有限公司 | Constant current source aluminum electrolysis anode current measuring instrument based on differential amplification |
| CN105510676A (en) * | 2016-01-08 | 2016-04-20 | 平高集团有限公司 | Small-current signal monitoring device for high-voltage switchgear |
| CN205176291U (en) * | 2015-09-06 | 2016-04-20 | 杭州洛搏特自动化设备有限公司 | Special sensor that detects of chain part neglected loading |
| CN105547334A (en) * | 2015-12-15 | 2016-05-04 | 重庆梅安森科技股份有限公司 | Multi-shift sensor |
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-
2017
- 2017-09-28 CN CN201710898317.5A patent/CN107505496B/en active Active
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| Publication number | Publication date |
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| CN107505496B (en) | 2024-07-19 |
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