CN208043995U - Magnetoelectricity converting means and cable fault positioning device - Google Patents
Magnetoelectricity converting means and cable fault positioning device Download PDFInfo
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- CN208043995U CN208043995U CN201820618010.5U CN201820618010U CN208043995U CN 208043995 U CN208043995 U CN 208043995U CN 201820618010 U CN201820618010 U CN 201820618010U CN 208043995 U CN208043995 U CN 208043995U
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Abstract
The utility model provides a kind of magnetoelectricity converting means and cable fault positioning device, is related to fault detection technique field, which includes sequentially connected signal conversion unit and signal processing unit；Signal conversion unit is used to acquire the magnetic signal in local environment magnetic field, and magnetic signal is converted to voltage signal；Signal conversion unit is additionally operable to voltage signal being transmitted to signal processing unit；Signal processing unit exports amplified voltage signal for being amplified processing to voltage signal.The utility model can effectively promote the accuracy of cable fault positioning device by the way that magnetic signal in environment is converted to voltage signal and amplification.
Description
Technical field
The utility model is related to fault detection technique fields, fixed more particularly, to a kind of magnetoelectricity converting means and cable fault
Position equipment.
Background technology
With popularizing for Metropolitan Area Network (MAN) transformation, buried cable is more and more widely used.Buried cable has power transmission
Reliably, the advantages that being not take up aboveground area and the conveying energy of transmission line of electricity can be improved, but when cable breaks down, also deposit
The drawbacks of being difficult to determine abort situation.
Existing FLU Fault Location Unit typically directly carries out abort situation detection using the magnetic signal in residing magnetic field, in this way
Detection mode accuracy it is not high.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of magnetoelectricity converting means and cable fault positioning device,
Magnetic signal in environment can be converted to voltage signal and amplification by magnetoelectricity converting means, in order to cable fault positioning device application
Amplified voltage signal effectively determines abort situation.
In a first aspect, the utility model embodiment provides a kind of magnetoelectricity converting means, which is applied to
Cable fault positioning device, magnetoelectricity converting means include sequentially connected signal conversion unit and signal processing unit；Signal
Converting unit is used to acquire the magnetic signal in local environment magnetic field, and magnetic signal is converted to voltage signal；Signal conversion unit
It is additionally operable to voltage signal being transmitted to signal processing unit；Signal processing unit is used to be amplified processing to voltage signal, and
Export amplified voltage signal.
With reference to first aspect, the utility model embodiment provides the first possible embodiment of first aspect,
In, above-mentioned signal conversion unit includes magnetoelectric transducer.
With reference to first aspect, the utility model embodiment provides second of possible embodiment of first aspect,
In, above-mentioned signal processing unit includes sequentially connected level-one amplifying circuit and second amplifying circuit；Level-one amplifying circuit is used for
Level-one enhanced processing is carried out to voltage signal, output level-one amplifies voltage signal；And level-one amplification voltage signal is transmitted to two
Grade amplifying circuit；Second amplifying circuit is used to carry out two level enhanced processing, output two level amplification electricity to level-one amplification voltage signal
Press signal.
Second of possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect
Three kinds of possible embodiments, wherein the amplification factor of above-mentioned level-one amplifying circuit and the amplification factor phase of second amplifying circuit
It is same or different.
Second of possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect
Four kinds of possible embodiments, wherein above-mentioned level-one amplifying circuit and second amplifying circuit are common emitter amplifying circuit.
The 4th kind of possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect
Five kinds of possible embodiments, wherein above-mentioned common emitter amplifying circuit includes NPN type triode and connects with NPN type triode
The multiple amplification resistance connect.
Second of possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect
Six kinds of possible embodiments, wherein be additionally provided with regulation resistance between above-mentioned level-one amplifying circuit and second amplifying circuit.
Second of possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect
Seven kinds of possible embodiments, wherein the input terminal of the input terminal and output end, second amplifying circuit of above-mentioned level-one amplifying circuit
It is respectively provided with filter capacitor with output end.
With reference to first aspect, the utility model embodiment provides the 8th kind of possible embodiment of first aspect,
In, above-mentioned apparatus further includes the power supply unit being connected respectively with signal conversion unit and signal processing unit；Power supply unit is used
In to signal conversion unit and signal processing unit power supply.
Second aspect, the utility model embodiment provide a kind of cable fault positioning device, wherein the cable fault is fixed
Position equipment includes the magnetic described in the 8th kind of possible any one of embodiment of one or more first aspects to first aspect
Electric conversion means.
The utility model embodiment provides a kind of magnetoelectricity converting means and cable fault positioning device, magnetoelectricity converting means
Including sequentially connected signal conversion unit and signal processing unit.Signal conversion unit is for acquiring in local environment magnetic field
Magnetic signal, and be transmitted to signal processing unit after magnetic signal is converted to voltage signal；Signal processing unit is used for voltage
Signal is amplified processing, and exports amplified voltage signal.The utility model embodiment is converted to magnetic signal in environment
Voltage signal and amplification can effectively determine fault bit convenient for cable fault positioning device using amplified voltage signal
It sets.
Other feature and advantage of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood by implementing the utility model.The purpose of this utility model and other advantages are illustrating
Specifically noted structure is realized and is obtained in book, claims and attached drawing.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment cited below particularly, and
The appended attached drawing of cooperation, is described in detail below.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific implementation mode or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of structural schematic diagram for magnetoelectricity converting means that the utility model embodiment provides；
Fig. 2 is the structural schematic diagram for another magnetoelectricity converting means that the utility model embodiment provides；
Fig. 3 is a kind of circuit diagram for magnetoelectricity converting means that the utility model embodiment provides；
Fig. 4 is a kind of structural schematic diagram for cable fault positioning device that the utility model embodiment provides.
Specific implementation mode
To keep the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with attached drawing to this
The technical solution of utility model is clearly and completely described, it is clear that described embodiment is that the utility model part is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, shall fall within the protection scope of the present invention.
At present when buried cable breaks down, the FLU Fault Location Unit for searching abort situation typically directly applies institute
The magnetic signal located in magnetic field carries out abort situation detection, and such detection mode accuracy is not high.Based on this, the utility model is real
A kind of magnetoelectricity converting means and cable fault positioning device for applying example offer, can be converted to voltage signal by magnetic signal in environment
And amplify, in order to which cable fault positioning device effectively determines abort situation using amplified voltage signal.
For ease of understanding the present embodiment, change the outfit first to a kind of magnetoelectricity change disclosed in the utility model embodiment
It sets and describes in detail.
A kind of structural schematic diagram of magnetoelectricity converting means shown in Figure 1, the magnetoelectricity converting means include being sequentially connected
Signal conversion unit 102 and signal processing unit 104.
Wherein, signal conversion unit is used to acquire the magnetic signal in local environment magnetic field, and magnetic signal is converted to voltage
Signal.Signal conversion unit is additionally operable to voltage signal being transmitted to signal processing unit.Signal processing unit is used to believe voltage
Number it is amplified processing, and exports amplified voltage signal.
The above-mentioned magnetoelectricity converting means that the utility model embodiment provides by magnetic signal in environment by being converted to voltage letter
Number and amplify, effectively improve the accuracy of cable fault positioning device.
Specifically, above-mentioned signal conversion unit includes magnetoelectric transducer.Magnetoelectric transducer is to utilize electromagnetic induction principle, will
The movement velocity of input is converted into the output of the induced potential in coil, can the mechanical energy of testee be directly converted into telecommunications
Number output, be appropriate for dynamic measure.When practical application, colour coding inductance coil can be used, be arranged its inductance value be 9.44mH when,
Electromagnetic signal within 5 meters can be effectively detected.
Above-mentioned signal processing unit includes sequentially connected level-one amplifying circuit and second amplifying circuit.Level-one amplifying circuit
For carrying out level-one enhanced processing to voltage signal, output level-one amplifies voltage signal, and level-one amplification voltage signal is transmitted
To second amplifying circuit.Second amplifying circuit is used to carry out two level enhanced processing to level-one amplification voltage signal, and output two level is put
Big voltage signal.In actual use, the amplification factor of level-one amplifying circuit can phase with the amplification factor of second amplifying circuit
It is same or different.Specifically, generally use operational amplification circuit in the related technology, may enable so above-mentioned voltage signal by
The interference of HF noise signal in environment, especially high-power, high frequency, low distortion occasion when, interference it is even more serious.For
The stability and high-performance of amplifying circuit are promoted, level-one amplifying circuit and two level the amplification electricity that the utility model embodiment provides
Road is common emitter amplifying circuit, wherein common emitter amplifying circuit includes NPN (Negative-Positive-
Negative, cathode-anode-cathode) type triode and multiple amplification resistance for being connect with NPN type triode.Above-mentioned times magnification
Number is determined by the resistance value of amplification resistance.The utility model embodiment is by using common emitter amplifying circuit, compared to correlation
Operational amplification circuit used by technology enables to voltage signal to be transmitted in circuit more stablely.
In order to which signal can be transmitted more accurately, it is additionally provided between above-mentioned level-one amplifying circuit and second amplifying circuit
Regulation resistance.Specifically, slide rheostat can be used in regulation resistance, it is corresponding when the variation of the inductance value of above-mentioned magnetoelectric transducer
Adjusting slide rheostat resistance value to ensure the normal operation of circuit.In actual use, according to the amplified signal of level-one, more
Easily the resistance value of slide rheostat is adjusted accordingly, therefore preferably slide rheostat is arranged in level-one amplifying circuit and two
Between grade amplifying circuit.
In order to reduce interference of the DC voltage for signal, the input terminal and output end, two level of above-mentioned level-one amplifying circuit
The input terminal and output end of amplifying circuit are respectively provided with filter capacitor.Filter capacitor can be effectively isolated magnetic signal and electricity
Press the DC component of signal.
Further, referring to Fig. 2, the utility model embodiment provides the structural schematic diagram of another magnetoelectricity converting means,
The device further includes the power supply being connected respectively with signal conversion unit 102 and signal processing unit 104 on the basis of Fig. 1
Unit 106.The power supply unit 106 is used for each electrical appliance included in signal conversion unit 102 and signal processing unit 104
Part is powered.Signal conversion unit 102, signal processing unit 104 and power supply unit 106 can be integrated on same circuit board,
It can be respectively arranged on different circuit boards.In practical applications, also illustrate that signal conversion unit 102 mainly wraps in Fig. 2
Magnetoelectric transducer 102a is included, signal processing unit 104 includes mainly level-one amplifying circuit 104a and second amplifying circuit 104b.When
So, signal conversion unit 102 and signal processing unit 104 can also include other devices, and Fig. 2 no longer illustrates.
Further, in order to be better understood from the utility model embodiment, referring to Fig. 3, the utility model embodiment also provides
A kind of circuit diagram of magnetoelectricity converting means.Above-mentioned power supply unit power supply VCC preferably uses 12V voltages.Above-mentioned signal turns
Unit is changed to be made of inductance Lx1 and capacitance C11；Wherein, the magnetic signal in magnetic field is converted to voltage signal, capacitance by inductance Lx1
C11 is used to be isolated for inductance Lx1 the DC component of VCC.Above-mentioned signal processing unit includes sequentially connected level-one amplifying circuit
And second amplifying circuit, specifically, level-one amplifying circuit is made of resistance R11, resistance R12 and triode Q11；Wherein, resistance
R11 and resistance R12 is amplification resistance, amplification factors namely level-one amplification factor of the control triode Q11 for voltage signal.
Second amplifying circuit is made of resistance R14, resistance R15 and triode Q12；Wherein, resistance R14 and resistance R15 is amplification resistance,
Control amplification factor namely two level amplification factor of the triode Q12 for voltage signal.The amplification factor of signal processing unit is
The product of level-one amplification factor and two level amplification factor.Foregoing circuit schematic diagram further includes regulation resistance R13 and filter capacitor
C12, C13, C14 and C15.Specifically, as shown in figure 3, the connection of each component is as follows：One end of inductance Lx1 and capacitance C11, electricity
The one end for holding C12 is connected, and the other end ground connection of inductance Lx1, the other end of capacitance C11 is connected with power supply VCC, capacitance C12's
The other end is connected with the base stage of one end of resistance R12 and triode Q11, the other end of resistance R12 and one end of resistance R11,
One end of triode Q11 collectors and capacitance C13 are connected, and the other end of resistance R11 is connected with power supply VCC, triode Q11's
Transmitting collection ground connection, the other end of capacitance C13 are connected with the adjustable end of regulation resistance R13, one end ground connection of adjustable resistance R13,
The other end of adjustable resistance R13 is connected with one end of capacitance C14, the other end of capacitance C14 and one end of resistance R15 and three poles
The base stage of pipe Q12 is connected, the other end of resistance R15 and one end of resistance R14, the collector of triode Q12 and capacitance C15
One end is connected, and the other end of resistance R14 is connected with power supply VCC, triode Q12 transmitting collection ground connection, and the other end of capacitance C15 is straight
Meet the amplified voltage signal Vo1 of output.
Corresponding above-mentioned magnetoelectricity converting means, the utility model embodiment additionally provide a kind of cable fault positioning device,
In, which includes one or more above-mentioned magnetoelectricity converting means.When practical application, referring to Fig. 4, above-mentioned electricity
Cable FLU Fault Location Unit 40 includes 4 magnetoelectricity converting means 40a.4 magnetoelectricity converting means can correspond to different magnetic signal wave bands,
To realize that the division of labor under different-waveband detects.A kind of cable fault that the utility model embodiment provides is located through inside it
The voltage signal that the magnetoelectricity conversion module of setting is exported can quickly and effectively determine the position that cable breaks down.
The computer program for the magnetoelectricity converting means and cable fault positioning device that the utility model embodiment is provided produces
Product, including the computer readable storage medium of program code is stored, the instruction that program code includes can be used for executing front side
Method in method embodiment, specific implementation can be found in embodiment of the method, and details are not described herein.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description
It with the specific work process of device, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In addition, in the description of the utility model embodiment unless specifically defined or limited otherwise, term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, can also be electrical connection；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the connection inside two elements.To those skilled in the art, above-mentioned term can be understood in this reality with concrete condition
With the concrete meaning in novel.
It is in the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
The utility model and simplifying describes for ease of description, do not indicate or imply the indicated device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relative importance.
Finally it should be noted that：Above example, only specific embodiment of the present utility model, to illustrate this practicality
Novel technical solution, rather than its limitations, the scope of protection of the utility model is not limited thereto, although with reference to aforementioned implementation
The utility model is described in detail in example, it should be understood by those skilled in the art that：Any skill for being familiar with the art
Art personnel within the technical scope disclosed by the utility model, can still carry out the technical solution recorded in previous embodiment
Modification can readily occur in variation or equivalent replacement of some of the technical features；And these are changed, change or replace
It changes, the spirit and scope for the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution should all cover
It is within the protection scope of the utility model.Therefore, the scope of protection of the utility model should be with scope of the claims
It is accurate.
Claims (10)
1. a kind of magnetoelectricity converting means, which is characterized in that the magnetoelectricity converting means is applied to cable fault positioning device, described
Magnetoelectricity converting means includes sequentially connected signal conversion unit and signal processing unit；
The signal conversion unit is used to acquire the magnetic signal in local environment magnetic field, and the magnetic signal is converted to voltage letter
Number；The signal conversion unit is additionally operable to the voltage signal being transmitted to the signal processing unit；
The signal processing unit exports the amplified voltage letter for being amplified processing to the voltage signal
Number.
2. the apparatus according to claim 1, which is characterized in that the signal conversion unit includes magnetoelectric transducer.
3. the apparatus according to claim 1, which is characterized in that the signal processing unit includes that sequentially connected level-one is put
Big circuit and second amplifying circuit；
The level-one amplifying circuit is used to carry out level-one enhanced processing to the voltage signal, and output level-one amplifies voltage signal；
And level-one amplification voltage signal is transmitted to the second amplifying circuit；
The second amplifying circuit is used to carry out two level enhanced processing, output two level amplification electricity to level-one amplification voltage signal
Press signal.
4. device according to claim 3, which is characterized in that the amplification factor of the level-one amplifying circuit and the two level
The amplification factor of amplifying circuit is identical or different.
5. device according to claim 3, which is characterized in that the level-one amplifying circuit and the second amplifying circuit are equal
For common emitter amplifying circuit.
6. device according to claim 5, which is characterized in that the common emitter amplifying circuit includes NPN type triode
The multiple amplification resistance being connect with the NPN type triode.
7. device according to claim 3, which is characterized in that the level-one amplifying circuit and the second amplifying circuit it
Between be additionally provided with regulation resistance.
8. device according to claim 3, which is characterized in that the input terminal and output end of the level-one amplifying circuit, institute
The input terminal and output end for stating second amplifying circuit are respectively provided with filter capacitor.
9. the apparatus according to claim 1, which is characterized in that the device further include respectively with the signal conversion unit and
The power supply unit that the signal processing unit is connected；
Said supply unit is used to power to the signal conversion unit and the signal processing unit.
10. a kind of cable fault positioning device, which is characterized in that the cable fault positioning device includes one or more rights
It is required that 1-9 any one of them magnetoelectricity converting means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820618010.5U CN208043995U (en) | 2018-04-26 | 2018-04-26 | Magnetoelectricity converting means and cable fault positioning device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820618010.5U CN208043995U (en) | 2018-04-26 | 2018-04-26 | Magnetoelectricity converting means and cable fault positioning device |
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| CN208043995U true CN208043995U (en) | 2018-11-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111665420A (en) * | 2020-05-29 | 2020-09-15 | 杭州电子科技大学 | Ultrasonic partial discharge detection device and detection method thereof |
| CN114280412A (en) * | 2021-11-22 | 2022-04-05 | 中国地质大学（武汉） | Low-current overhead line ground fault positioning device and fault positioning method |
-
2018
- 2018-04-26 CN CN201820618010.5U patent/CN208043995U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111665420A (en) * | 2020-05-29 | 2020-09-15 | 杭州电子科技大学 | Ultrasonic partial discharge detection device and detection method thereof |
| CN114280412A (en) * | 2021-11-22 | 2022-04-05 | 中国地质大学（武汉） | Low-current overhead line ground fault positioning device and fault positioning method |
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