CN109639320B - Method and system for checking serial households - Google Patents
Method and system for checking serial households Download PDFInfo
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- CN109639320B CN109639320B CN201811410210.2A CN201811410210A CN109639320B CN 109639320 B CN109639320 B CN 109639320B CN 201811410210 A CN201811410210 A CN 201811410210A CN 109639320 B CN109639320 B CN 109639320B
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000008878 coupling Effects 0.000 claims abstract description 60
- 238000010168 coupling process Methods 0.000 claims abstract description 60
- 238000005859 coupling reaction Methods 0.000 claims abstract description 60
- 238000013024 troubleshooting Methods 0.000 claims abstract description 15
- 238000011835 investigation Methods 0.000 claims description 11
- 238000012360 testing method Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000004891 communication Methods 0.000 description 10
- 239000000243 solution Substances 0.000 description 6
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 241000270722 Crocodylidae Species 0.000 description 2
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- 230000001939 inductive effect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000004397 blinking Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/56—Circuits for coupling, blocking, or by-passing of signals
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Abstract
The invention discloses a method and a system for troubleshooting of serial households. Wherein, the method comprises the following steps: coupling the high-frequency carrier signal to a power line of an ammeter to be detected in an electromagnetic coupling mode; determining whether an electromagnetic wave signal corresponding to the high-frequency carrier signal in the power line is detected; and determining that the connection of the ammeter to be tested is correct under the condition of receiving the electromagnetic wave signal corresponding to the high-frequency carrier signal. The invention solves the technical problems of low working efficiency, complex operation, poor safety and easy occurrence of power failure accidents in the process of connecting a carrier transmitter to a power line when carrying out serial-household troubleshooting in the related technology.
Description
Technical Field
The invention relates to the field of communication, in particular to a method and a system for troubleshooting of serial households.
Background
The power line communication technology is a specific communication mode of a power system, is a technology for carrying out high-speed transmission on analog or digital signals in a carrier mode by utilizing the existing power line, and has the remarkable characteristics of no need of wiring, wide network coverage, convenience in connection and the like. In recent years, with the development of power carrier communication technology, low-voltage power carrier communication technology has become a new hot spot. The low-ballast wave transmitter is connected with the power line through a coupling device and couples the carrier modulation signal to the low-voltage power line; the carrier receiver completes signal receiving and demodulation through the coupling device, and high-speed transmission of signals is achieved.
The carrier signal coupling device is a main device for solving signal feed network and receiving, is a key node in a power carrier communication system, and has inductive coupling and capacitive coupling in common modes at present.
The carrier transmitter of the serial household investigation device couples the carrier signal to the power line through the direct coupling mode of inductance or capacitive coupling, and for the working process of the serial household investigation, the two modes adopt the contact coupling mode for operation, so that safety risks exist, especially under the condition of simultaneously measuring a plurality of meter positions, a plurality of coupling devices are required to be clamped on the outlet terminal of the electric energy meter simultaneously, once the operation is improper, electric shock accidents or power failure risks are possibly caused, complaints of users are caused, and the development of the serial household investigation work and the improvement of the working efficiency are not facilitated. Therefore, research on a safe, reliable and efficient carrier signal injection mode becomes a key problem to be solved by the serial-to-the-house investigation carrier transmitter.
The process of coupling a carrier signal into a post-table circuit by a carrier transmitter of a conventional cross-user troubleshooting device is as follows, and the operation of the process includes: opening a lead seal on the electric energy meter → opening a meter tail cover → clamping a power-taking crocodile clip of the carrier transmitter to 2 and 4 outlet terminals of the electric energy meter (if a plurality of electric energy meters are to be measured simultaneously, the step needs to be repeated for a plurality of times) → starting equipment → sending a carrier signal → measuring → taking off the crocodile clip after the measurement is finished → closing the meter tail cover → adding the lead seal again, so that not only is the operation flow complicated, but also the safety accident is easily caused by improper operation. In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a method and a system for troubleshooting of serial households, which at least solve the technical problems of low working efficiency, complex operation, poor safety and easy occurrence of power failure accidents in the process of connecting a carrier transmitter to a power line during troubleshooting of serial households in the related art.
According to an aspect of the embodiments of the present invention, there is provided a method for troubleshooting of a string of households, including: coupling the high-frequency carrier signal to a power line of an ammeter to be detected in an electromagnetic coupling mode; determining whether an electromagnetic wave signal corresponding to the high-frequency carrier signal in the power line is detected; and determining that the connection of the ammeter to be tested is correct under the condition of receiving the electromagnetic wave signal corresponding to the high-frequency carrier signal.
Alternatively, the determining whether the electromagnetic wave signal corresponding to the high-frequency carrier signal in the power line is detected includes: and determining that the connection of the ammeter to be tested is wrong under the condition that the electromagnetic wave signal corresponding to the high-frequency carrier signal is not received.
Optionally, the coupling the high-frequency carrier signal to the power line by electromagnetic coupling includes: determining a signal access point, wherein the signal access point is any point on a power line of the ammeter to be tested; determining that a magnetic core on a carrier transmitter is closed at a signal access point; with the magnetic core closed, the high frequency carrier signal is converted into an induced current.
Optionally, before the high-frequency carrier signal is coupled to the power line of the electric meter to be tested by means of electromagnetic coupling, the method includes: acquiring the frequency and power of a high-frequency carrier signal; and coding the high-frequency carrier signal according to the frequency and the power of the high-frequency carrier signal to obtain the high-frequency carrier signal.
Optionally, after determining that the electric meter to be tested is connected incorrectly, the method includes: and sending a prompt signal, wherein the prompt signal is used for the connection error of the ammeter to be tested.
According to another aspect of the embodiments of the present invention, there is also provided a system for troubleshooting of a string of households, including: the carrier transmitter is used for coupling the high-frequency carrier signal to a power line of the ammeter to be tested, and comprises a coupling device; and a carrier receiver for receiving an electromagnetic wave signal corresponding to the high frequency carrier signal.
Optionally, the coupling means comprises: the power line of the ammeter that awaits measuring can be held and dodged to clamping part, wherein, clamping part includes two articulated holders.
Optionally, the coupling device further comprises: and the two magnetic cores are respectively fixed inside the end parts of the two clamping pieces through fixing pieces.
Optionally, the magnetic core has an arc-shaped bayonet, and in case the clip-like coupling device is clipped onto the power line, the magnetic core is closed, forming a closed magnetic loop outside the power line.
Optionally, the carrier transmitter comprises: a low-loss radio frequency cable for transmitting a high frequency carrier signal to a magnetic core on a carrier transmitter, wherein the low-loss radio frequency cable is wound around the magnetic core.
In the embodiment of the invention, a high-frequency carrier signal is fed into a power line in an electromagnetic coupling mode, and the high-frequency carrier signal is coupled to the power line of the ammeter to be tested in the electromagnetic coupling mode; determining whether an electromagnetic wave signal corresponding to the high-frequency carrier signal in the power line is detected; under the condition of receiving electromagnetic wave signals corresponding to high-frequency carrier signals, the ammeter to be detected is determined to be correctly connected, and the purposes of simple and convenient installation and operation and flexible installation position of the detection device during serial inspection are achieved, so that the technical effect of avoiding safety accidents such as electric shock and power failure is achieved, and the technical problems that in the related technology, when serial inspection is performed, the work efficiency is low, the operation is complex, the safety is poor and the power failure accident is easily caused in the process of connecting a carrier transmitter to a power line are solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of an alternative method of cross-house investigation according to an embodiment of the invention;
FIG. 2 is a block diagram of an alternative system for cross-family troubleshooting in accordance with an embodiment of the present invention;
fig. 3 is a schematic view of an alternative coupling device according to an embodiment of the invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
When the serial-to-the-house investigation is carried out, a carrier transmitter used for the serial-to-the-house investigation needs to couple a carrier signal to a power line in a coupling mode, so that the communication between the carrier transmitter and a receiver is completed. However, for the conventional serial-to-house troubleshooting equipment, the coupling mode is realized by inductive and capacitive coupling. For the two modes, for the working process of the serial investigation, the operation in the contact coupling mode has safety risks, especially under the condition of simultaneously measuring a plurality of epitopes, a plurality of coupling devices are required to be clamped on the outlet terminals of the electric energy meter, once the operation is improper, electric shock accidents or power failure risks are possibly caused, complaints of users are caused, and the development of the serial investigation work and the improvement of the working efficiency are not facilitated.
In order to solve the above problems, embodiments of the present application provide corresponding solutions, which are described in detail below.
In accordance with an embodiment of the present invention, there is provided a method embodiment for cross-country troubleshooting, it being noted that the steps illustrated in the flowchart of the figure may be performed in a computer system such as a set of computer-executable instructions and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than here.
Fig. 1 is a flowchart of an alternative method for cross-user troubleshooting according to an embodiment of the present invention, as shown in fig. 1, the method includes the following steps:
step S102, coupling the high-frequency carrier signal to a power line of an ammeter to be tested in an electromagnetic coupling mode; the ammeter to be tested is the ammeter of the user to be tested.
Step S104, determining whether an electromagnetic wave signal corresponding to the high-frequency carrier signal in the power line is detected;
and step S106, determining that the electric meter to be tested is correctly connected under the condition that the electromagnetic wave signal corresponding to the high-frequency carrier signal is received.
In the embodiment of the application, under the condition that the electromagnetic wave signal corresponding to the high-frequency carrier signal is not received, the connection error of the electric meter to be tested is determined. And after determining that the connection of the ammeter to be tested is wrong, sending a prompt signal, wherein the prompt signal is used for the connection of the ammeter to be tested. The prompt signal may be an acoustic signal, an optical signal, text information, or the like, and for example, the prompt may be made by making a sound, the prompt may be made by blinking an indicator light, and the connection error of the test pencil may be displayed by a display device. Alternatively, the alert signal may be transmitted to the remote receiving end via the communication device.
In this embodiment of the present application, coupling a high-frequency carrier signal to a power line by electromagnetic coupling includes: determining a signal access point, wherein the signal access point is any point on a power line of the ammeter to be tested; determining that a magnetic core on a carrier transmitter is closed at a signal access point; with the magnetic core closed, the high frequency carrier signal is converted into an induced current.
In the embodiment of the application, before the high-frequency carrier signal is coupled to a power line of an electric meter to be tested in an electromagnetic coupling mode, the frequency and the power of the high-frequency carrier signal are obtained; and coding the high-frequency carrier signal according to the frequency and the power of the high-frequency carrier signal to obtain the high-frequency carrier signal.
In the embodiment of the application, only a certain point is selected by a circuit behind the electric energy meter for signal injection, the injection point can be flexibly selected, and the injection mode adopts an electromagnetic coupling mode. In the operation process, the lead seal of the electric energy meter does not need to be opened, the strong current terminal does not need to be contacted, only a proper position needs to be selected on the circuit, and the power line is clamped by a clamp. The method is simple to operate, improves the efficiency of checking the electric meter in a misdoor manner, and can avoid safety accidents.
According to an embodiment of the present invention, an embodiment of a system for troubleshooting with string households is provided, and fig. 2 is a structural diagram of an optional system for troubleshooting with string households according to an embodiment of the present invention, as shown in fig. 2, the system includes:
the carrier transmitter 20 is used for coupling the high-frequency carrier signal to a power line of the electric meter to be tested, wherein the carrier transmitter comprises a coupling device 200;
and a carrier receiver 22 for receiving an electromagnetic wave signal corresponding to the high frequency carrier signal.
When the cross-house investigation is performed, the coupling device 200 in the carrier transmitter 20 is clamped on the electric meter to be measured, and the carrier receiver 22 is placed in a target area corresponding to the electric meter to be measured, where the target area may be within a certain range of a doorway of a resident corresponding to the electric meter to be measured.
In the embodiment of the present application, the coupling device 200 includes: the clamping part can clamp and avoid a power line of the ammeter to be tested, wherein the clamping part comprises two hinged clamping pieces; and the two magnetic cores are respectively fixed inside the end parts of the two clamping pieces through fixing pieces. The magnetic core has an arc-shaped bayonet, and when the clip-shaped coupling device 200 is clipped onto the power line, the magnetic core is closed, forming a closed magnetic loop outside the power line.
In the embodiment of the present application, the carrier transmitter 20 includes: a low-loss radio frequency cable for transmitting a high frequency carrier signal to a magnetic core on a carrier transmitter, wherein the low-loss radio frequency cable is wound around the magnetic core.
The embodiment of the present application provides an alternative implementation manner, as shown in fig. 3, fig. 3 is a schematic diagram of an alternative coupling device according to an embodiment of the present invention, two magnetic cores are designed at the position of a circular bayonet inside a clip-shaped coupling device 32, the two magnetic cores are divided into an upper portion and a lower portion, and are respectively built inside an upper structural member and a lower structural member of a clip, after the clip fastens an electric wire, the closed magnetic core wraps a power line 30, a carrier signal is transmitted along a conducting wire wound on the magnetic core, an induced magnetic field is formed at the same time, after the power line passes through the magnetic field of the magnetic core, an induced current is generated on the power line, and the current is propagated forward along the conducting wire into the room, thereby achieving the purpose of coupling a high-frequency carrier signal into the power line without contact.
In the embodiment of the application, a carrier transmitter generates a high-frequency carrier signal, and a low-loss radio frequency cable is adopted to transmit the high-frequency carrier signal to a coupling device; the tail end of the radio frequency cable transmission is wound on the lower magnetic core of the split type magnetic core; the upper part and the lower part of the split type magnetic core are fixed through structural parts respectively to form a coupling device similar to a clip. The jaw of the clamp is opened, the clamp is clamped on a power line and then closed, the jaw is completely closed, so that the split type magnetic core forms a closed magnetic ring, the radio frequency cable wound on the magnetic ring can generate a magnetic field inside the magnetic core through electromagnetic induction, and when the power line passes through an alternating magnetic field, alternating current can be generated, so that a carrier signal is coupled to the power line.
Through the steps, the operation is simple and convenient, and the working efficiency is improved by more than 3 times; need not to contact the forceful electric power, the mounted position is nimble changeable, avoids the emergence of incident such as electric shock and power failure.
It is required or stated that, the preferred implementation of the embodiment shown in fig. 2 to fig. 3 can refer to the description related to fig. 1, and the description is not repeated here.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A method for troubleshooting a cross-house comprising:
coupling the high-frequency carrier signal to a power line of an ammeter to be detected in an electromagnetic coupling mode;
determining whether an electromagnetic wave signal corresponding to the high-frequency carrier signal in the power line is detected;
determining that the electric meter to be tested is correctly connected under the condition of receiving the electromagnetic wave signal corresponding to the high-frequency carrier signal,
determining whether an electromagnetic wave signal corresponding to the high frequency carrier signal in the power line is detected, including:
determining that the electric meter to be tested is connected wrongly under the condition that the electromagnetic wave signal corresponding to the high-frequency carrier signal is not received,
coupling a high-frequency carrier signal to a power line by means of electromagnetic coupling, comprising:
determining a signal access point, wherein the signal access point is any point on the power line of the electric meter to be tested;
determining that a magnetic core on a carrier transmitter is closed at the signal access point;
and converting the high-frequency carrier signal into an induced current under the condition that the magnetic core is closed.
2. The method of claim 1, wherein prior to coupling the high frequency carrier signal to the power line of the meter under test by electromagnetic coupling, comprising:
acquiring the frequency and the power of the high-frequency carrier signal;
and coding the high-frequency carrier signal according to the frequency and the power of the high-frequency carrier signal to obtain the high-frequency carrier signal.
3. The method of claim 1, wherein determining that the electricity meter under test is connected incorrectly comprises:
and sending a prompt signal, wherein the prompt signal is used for the connection error of the ammeter to be tested.
4. A system for cross-family investigation, comprising:
the carrier transmitter is used for coupling a high-frequency carrier signal to a power line of an ammeter to be tested, and comprises a coupling device;
a carrier receiver for receiving an electromagnetic wave signal corresponding to the high frequency carrier signal,
the coupling device includes: the clamping part can clamp and avoid the power line of the electric meter to be tested, wherein the clamping part comprises two hinged clamping pieces,
the coupling device further comprises: two magnetic cores which are respectively fixed inside the end parts of the two clamping pieces through fixing pieces,
the magnetic core is provided with an arc bayonet, and under the condition that the clamp-shaped coupling device is clamped on the power line, the magnetic core is closed, and a closed magnetic ring is formed outside the power line.
5. The system of claim 4, wherein the carrier transmitter comprises: a low-loss radio frequency cable for transmitting the high frequency carrier signal to a magnetic core on a carrier transmitter, wherein the low-loss radio frequency cable is wound around the magnetic core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811410210.2A CN109639320B (en) | 2018-11-23 | 2018-11-23 | Method and system for checking serial households |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811410210.2A CN109639320B (en) | 2018-11-23 | 2018-11-23 | Method and system for checking serial households |
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| CN109639320A CN109639320A (en) | 2019-04-16 |
| CN109639320B true CN109639320B (en) | 2022-03-15 |
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| CN201811410210.2A Active CN109639320B (en) | 2018-11-23 | 2018-11-23 | Method and system for checking serial households |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110618346B (en) * | 2019-08-13 | 2023-03-03 | 深圳供电局有限公司 | Household meter identification method and household meter identification device |
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| CN102487299A (en) * | 2010-12-03 | 2012-06-06 | 华北电力科学研究院有限责任公司 | Method and device for simulating noise of power line carrier channel |
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| CN106341162A (en) * | 2015-07-07 | 2017-01-18 | 华为技术有限公司 | Communication method and equipment |
| CN107957531A (en) * | 2017-12-22 | 2018-04-24 | 杭州华春科技有限公司 | The device and method of family table relation can be tested by not registering one's residence |
| CN207650325U (en) * | 2017-11-30 | 2018-07-24 | 国家电网公司 | One kind, which is visited one house after another, investigates instrument |
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2018
- 2018-11-23 CN CN201811410210.2A patent/CN109639320B/en active Active
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|---|---|---|---|---|
| CN1555610A (en) * | 2000-08-24 | 2004-12-15 | Method for transmitting high-frequency signals to low-frequency networks and corresponding system | |
| JP2011205604A (en) * | 2010-03-02 | 2011-10-13 | Central Res Inst Of Electric Power Ind | Power line communication system and connection device |
| CN102487299A (en) * | 2010-12-03 | 2012-06-06 | 华北电力科学研究院有限责任公司 | Method and device for simulating noise of power line carrier channel |
| CN106341162A (en) * | 2015-07-07 | 2017-01-18 | 华为技术有限公司 | Communication method and equipment |
| CN105933079A (en) * | 2016-06-01 | 2016-09-07 | 国网河北省电力公司电力科学研究院 | Detection system and detection method for communication performance of carrier signals with different frequencies |
| CN207650325U (en) * | 2017-11-30 | 2018-07-24 | 国家电网公司 | One kind, which is visited one house after another, investigates instrument |
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