CN210609169U - Low-voltage cable path detector based on carrier communication - Google Patents
Low-voltage cable path detector based on carrier communication Download PDFInfo
- Publication number
- CN210609169U CN210609169U CN201921785909.7U CN201921785909U CN210609169U CN 210609169 U CN210609169 U CN 210609169U CN 201921785909 U CN201921785909 U CN 201921785909U CN 210609169 U CN210609169 U CN 210609169U
- Authority
- CN
- China
- Prior art keywords
- low
- transmitter
- carrier
- receiver
- cable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides a wave trapper of a low-voltage cable path detector based on carrier communication, which is connected in series into a low-voltage system by a bypass capacitance method at a cable branch box switch or a transformer cable head; the transmitter is arranged beside the wave trapper, and the receiver is arranged at the tail end of a line or at a user meter; wireless communication transmission data is established between the transmitter and the receiver; after the transmitter selects a communication protocol, a signal corresponding to the communication protocol is generated into a carrier signal, and the carrier signal is sent to the receiver through a power cable of a low-voltage system; the receiver receives the carrier signal and reads the loading part in the carrier signal, compares the read signal with the signal corresponding to the communication protocol, judges the cable is normal if the read signal is consistent with the signal corresponding to the communication protocol, and transmits the judgment result back to the transmitter through wireless communication. The low-voltage cable path detector is small in size, can be held by a single hand, can quickly and accurately determine the trend of a low-voltage power cable, and can work under the condition of no power outage.
Description
Technical Field
The utility model relates to a power line carrier communication field specifically is a low tension cable route detecting instrument based on power line carrier communication.
Background
For the sake of urban tidiness and beauty, many overhead lines are cabled, and the failure rate of the lines is reduced, wherein the low-voltage 380V cable directly faces to users and is connected with a commercial center, a traffic facility and a residential house, and the importance of the low-voltage 380V cable is self-evident. However, because the construction time is long, and the management standard of the early electric power company on the construction of the low-voltage cables is relatively lagged, many low-voltage cables lack the signboard and the path diagram, and as the construction of the infrastructure is accelerated, the number of underground cables is more and more, so that the cable loop cannot be accurately identified, and the difficulty is brought to the construction and reconstruction engineering in the later period. The problems with early low voltage cables are particularly pronounced in the following areas:
(1) the equipment near-end cable terminal is inconsistent with the far-end terminal signboard;
(2) the device near-end cable terminal or far-end terminal signboard is missing;
(3) the cabling equipment path diagram is missing.
Because many rural basic teams and groups are not provided with professional cable path detectors, the approximate path of the low-voltage cable can be generally judged according to a cable trench and a cable pipe aiming at the early low-voltage cable with the missing signboard, but when multiple cables are buried simultaneously, the cable is corresponding to the other cable and cannot be judged frequently, so that the load cutting and transformation of the cable load at the position cannot be carried out, and the cables are identified (non-path detection) firstly.
The traditional cable identification method mainly utilizes a cable path detector, and the method which can be used for detecting the cable path mainly comprises an electromagnetic method, a direct current electric method, a seismic wave method, a radioactive tracking method and the like, wherein the electromagnetic method has the characteristics of high detection precision, simplicity and convenience in operation, strong anti-interference capability, high efficiency and the like, and most cable path detectors in the market are developed based on the method at present. The cable path detecting instrument mainly comprises a transmitter and a receiver, and is characterized in that the transmitter generates electromagnetic waves and transmits signals to underground detected cables in different transmitting modes, the underground cables generate induced currents after sensing the electromagnetic waves, the induced currents propagate along the cables, the electromagnetic waves are radiated to the ground in the propagation process, and the receivers for ground detection receive the electromagnetic wave signals so as to find the trend and the position of the cables.
The cable path detecting instrument is professional in use and operation, and can accurately identify a cable line by operation judgment of personnel with certain experience, but the instrument is expensive and high in cost, a plurality of power company basic teams and groups are not provided with the equipment, the equipment is used when accurate paths are required, and when a plurality of cables are buried in parallel (the cables are in the same path), the cable path detecting instrument can only ensure correct paths and cannot identify which cable specifically, in addition, the cable path detecting instrument is generally suitable for high-voltage cables and is not necessarily suitable for low-voltage cables, and various instruments of other similar cable detecting instruments are judged, so that the defects of high cost and complex operation exist, and a simple and convenient method with low cost needs to be researched.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the main technical problem that a low tension cable route detection instrument is provided, realize the cable through carrier communication and detect.
In order to solve the technical problem, the utility model provides a low-voltage cable path detector based on carrier communication, which comprises a transmitter, a receiver and a wave trap;
the wave trapper is connected in series into a low-voltage system at a cable branch box switch or a cable head of a transformer by a bypass capacitor method; the transmitter is arranged beside the wave trapper, and the receiver is arranged at the tail end of a line or at a user meter;
wireless communication transmission data is established between the transmitter and the receiver; after the transmitter selects a communication protocol, a signal corresponding to the communication protocol is generated into a carrier signal, and the carrier signal is sent to the receiver through a power cable of a low-voltage system; and the receiver receives the carrier signal, reads the loading part in the carrier signal, compares the read signal with a signal corresponding to the communication protocol, judges that the cable is normal if the read signal is consistent with the signal corresponding to the communication protocol, and transmits the judgment result back to the transmitter through wireless communication.
In a preferred embodiment: the transmitter comprises a main control part and a power supply part, wherein the power supply part is used for supplying power to the main control part.
In a preferred embodiment: the main control part comprises a single chip microcomputer STM32F103ZET6, a voltage stabilizing element, an LCD display screen, an nrf24l01 wireless communication module and a sens-09 power line carrier module;
and the judgment result is sent to a singlechip STM32F103ZET6 through an nrf24l01 wireless communication module and is displayed through an LCD screen.
In a preferred embodiment: the receiver comprises a main control part and a power supply part, wherein the power supply part is used for supplying power to the main control part.
In a preferred embodiment: the main control part comprises a single chip microcomputer STM32F103, a voltage stabilizing element, an LCD display screen, an nrf24l01 wireless communication module and a sens-09 power line carrier module;
the judgment result is sent to the nrf24l01 wireless communication module through the singlechip STM32F103, and then data is transmitted to the transmitter through wireless communication.
In a preferred embodiment: the wave trap comprises a filtering module and a switch which are connected in series.
In a preferred embodiment: the filtering module is an RC filtering module.
In a preferred embodiment: one transmitter for at least one receiver.
Compared with the prior art, the technical scheme of the utility model possess following beneficial effect:
the utility model provides a pair of low tension cable route detection instrument based on carrier communication, but small one-hand is held, can be fast accurate confirm low tension power cable move towards, can work under the circumstances that does not have a power failure.
Drawings
FIG. 1 is a circuit diagram of a low voltage system;
FIG. 2 is a schematic diagram of a low voltage system with a wave trap installed;
fig. 3 is an external view of the emitter.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and the detailed description.
The power line carrier communication is a technology for transmitting an analog signal or a digital signal at a high speed by a carrier method using an existing power line, and one of the most basic tasks in the power line carrier communication system is to select different modulation methods according to different communication channels.
Generally, a baseband signal contains a direct current component and a frequency component with a lower frequency, and is often not directly transmitted in a channel as a transmission signal, and therefore, the baseband signal must be converted into a band-pass signal (modulated signal) with a very high frequency relative to the baseband frequency to be suitable for channel transmission.
The quality of a communication system again depends to a large extent on the modulation scheme used. The modulation scheme is selected based on the channel characteristics in the system in order to match the signal characteristics to the channel characteristics. Obviously, different types of modulation schemes exist for different types of channel characteristics.
Referring to fig. 1 and 2, the present embodiment utilizes the above-mentioned power carrier communication principle to design a low-voltage cable path detector based on carrier communication, which includes a transmitter, a receiver and a wave trap;
the wave trapper is connected in series into a low-voltage system at a cable branch box switch or a cable head of a transformer by a bypass capacitor method; the transmitter is arranged beside the wave trapper, and the receiver is arranged at the tail end of a line or at a user meter; specifically, the transmitter has positive and negative probes or clamps for connection to a hot wire and a neutral wire. The receiver also has positive and negative probes or clamps, also connected to a live line and a neutral line.
Wireless communication transmission data is established between the transmitter and the receiver; after the transmitter selects a communication protocol, a signal corresponding to the communication protocol is generated into a carrier signal, and the carrier signal is sent to the receiver through a power cable of a low-voltage system; and the receiver receives the carrier signal, reads the loading part in the carrier signal, compares the read signal with a signal corresponding to the communication protocol, judges that the cable is normal if the read signal is consistent with the signal corresponding to the communication protocol, and transmits the judgment result back to the transmitter through wireless communication.
The communication protocol can be various and is selected by the user.
In this embodiment, the transmitter includes a main control portion and a power supply portion, and the power supply portion is configured to supply power to the main control portion. The transmitter further comprises a shell, a main control part and a power supply part are both arranged in the shell, and the main control part comprises a single chip microcomputer STM32F103ZET6, a voltage stabilizing element, an LCD display screen, an nrf24l01 wireless communication module and a sens-09 power line carrier module;
and the judgment result is sent to a singlechip STM32F103ZET6 through an nrf24l01 wireless communication module and is displayed through an LCD screen.
The receiver comprises a main control part and a power supply part, wherein the power supply part is used for supplying power to the main control part.
In a preferred embodiment: the main control part comprises a single chip microcomputer STM32F103, a voltage stabilizing element, an LCD display screen, an nrf24l01 wireless communication module and a sens-09 power line carrier module;
the judgment result is sent to the nrf24l01 wireless communication module through the singlechip STM32F103, and then data is transmitted to the transmitter through wireless communication.
In addition, the wave trapper comprises a filtering module and a switch 00 which are connected in series. And the filtering module is an RC filtering module.
Generally, when power line carrier communication is adopted, a wave trap needs to be connected in series into a line. However, the design requirement is to detect the wave trap in a non-power-off state, so that the design adopts a bypass operation mode to connect the wave trap in series into a line. As shown in fig. 2, the wave trap and the switch 00 are first coupled into the line as shown in fig. 2. Then switch 00 is closed and switch 4201 is opened, so that the wave trap can be connected to the transformer low-voltage system without power failure. If the line is the line where another user meter in fig. 2 is measured, it is necessary to connect the wave trap in series to the other line and open the switch 4101.
After the wave trapper is connected, a user can install the transmitter beside the wave trapper and install the receiver at the tail end of a line or at a user meter; specifically, the mounting means is to connect positive and negative probes or clamps of the transmitter and receiver to the respective live and neutral wires. Because the measurement is unidirectional, the farthest installation position of the receiver can reach the user meter, and the measurement range is large.
After the transmitter and the receiver are installed, a specific communication protocol is selected through the transmitter, so that the transmitter loads a signal corresponding to the communication protocol on an electromagnetic wave to form a carrier signal, the carrier signal is sent to the receiver through a cable, the receiver demodulates the carrier signal, reads the signal of a loading part and compares the signal with the communication protocol, and if the signal of the loading part is consistent with the signal of the communication protocol, the cable is judged to be normally used. At the moment, the receiver sends the judgment result to the transmitter through wireless communication, the transmitter displays the result on the display screen, and the user can know the judgment result.
In this embodiment, a transmitter corresponds a plurality of receivers, just so can detect many cables simultaneously, has promoted efficiency greatly.
The above description is only an exemplary embodiment of the present invention, and the scope of the present invention should not be limited accordingly. The equivalent changes and modifications made according to the patent scope and the content of the specification of the present invention should still fall within the scope covered by the present invention.
Claims (8)
1. A low-voltage cable path detector based on carrier communication is characterized by comprising a transmitter, a receiver and a wave trap;
the wave trapper is connected in series into a low-voltage system at a cable branch box switch or a cable head of a transformer by a bypass capacitor method; the transmitter is arranged beside the wave trapper, and the receiver is arranged at the tail end of a line or at a user meter;
wireless communication transmission data is established between the transmitter and the receiver; after the transmitter selects a communication protocol, a signal corresponding to the communication protocol is generated into a carrier signal, and the carrier signal is sent to the receiver through a power cable of a low-voltage system; and the receiver receives the carrier signal, reads the loading part in the carrier signal, compares the read signal with a signal corresponding to the communication protocol, judges that the cable is normal if the read signal is consistent with the signal corresponding to the communication protocol, and transmits the judgment result back to the transmitter through wireless communication.
2. A low-voltage cable path finder based on carrier communication according to claim 1, characterized in that: the transmitter comprises a main control part and a power supply part, wherein the power supply part is used for supplying power to the main control part.
3. A low-voltage cable path finder based on carrier communication according to claim 2, characterized in that: the main control part comprises a single chip microcomputer STM32F103ZET6, a voltage stabilizing element, an LCD display screen, an nrf24l01 wireless communication module and a sens-09 power line carrier module;
and the judgment result is sent to a singlechip STM32F103ZET6 through an nrf24l01 wireless communication module and is displayed through an LCD screen.
4. A low-voltage cable path finder based on carrier communication according to claim 1, characterized in that: the receiver comprises a main control part and a power supply part, wherein the power supply part is used for supplying power to the main control part.
5. A low-voltage cable path finder based on carrier communication according to claim 4, wherein: the main control part comprises a single chip microcomputer STM32F103, a voltage stabilizing element, an LCD display screen, an nrf24l01 wireless communication module and a sens-09 power line carrier module;
the judgment result is sent to the nrf24l01 wireless communication module through the singlechip STM32F103, and then data is transmitted to the transmitter through wireless communication.
6. A low-voltage cable path finder based on carrier communication according to claim 1, characterized in that: the wave trap comprises a filtering module and a switch which are connected in series.
7. A low-voltage cable path finder based on carrier communication according to claim 6, wherein: the filtering module is an RC filtering module.
8. A low-voltage cable path finder based on carrier communication according to claim 1, characterized in that: one transmitter for at least one receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921785909.7U CN210609169U (en) | 2019-10-23 | 2019-10-23 | Low-voltage cable path detector based on carrier communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921785909.7U CN210609169U (en) | 2019-10-23 | 2019-10-23 | Low-voltage cable path detector based on carrier communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210609169U true CN210609169U (en) | 2020-05-22 |
Family
ID=70722411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921785909.7U Active CN210609169U (en) | 2019-10-23 | 2019-10-23 | Low-voltage cable path detector based on carrier communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210609169U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113740777A (en) * | 2021-09-07 | 2021-12-03 | 北京百度网讯科技有限公司 | Line seeking equipment and line seeking method thereof, host and slave |
-
2019
- 2019-10-23 CN CN201921785909.7U patent/CN210609169U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113740777A (en) * | 2021-09-07 | 2021-12-03 | 北京百度网讯科技有限公司 | Line seeking equipment and line seeking method thereof, host and slave |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103293443B (en) | A kind of distribution network overhead line Earth design method | |
| CN103760467B (en) | A kind of one-phase earthing failure in electric distribution network point visiting method | |
| CN201673231U (en) | Fault testing apparatus of cable or pipeline | |
| CN204177891U (en) | A kind of Intelligent platform zone identifier based on Luo-coil | |
| CN103063967A (en) | Switching room user identification method and switching room user identification device | |
| CN112630585B (en) | Distribution cable partial discharge live detection system and detection method | |
| CN110940938A (en) | Device and method for detecting connection relation between user electric meter and transformer | |
| CN102707160A (en) | Electromagnetic environment automated testing device for aviational radio navigation station and method thereof | |
| CN102879718B (en) | Wired-loop-based entire-station monitoring and positioning system and positioning method for partial discharge | |
| CN104155523A (en) | Satellite timing remote wireless phase detector | |
| US7598721B2 (en) | Locating a cable using synchronization portion and data portion of a tone packet of a system | |
| CN103490796A (en) | Power distribution line broadband power carrier communication system and method | |
| CN210609169U (en) | Low-voltage cable path detector based on carrier communication | |
| CN202166749U (en) | Cable path detector | |
| CN104360215A (en) | Detection device for multi-point earthing fault of small bus N600 | |
| CN104515515A (en) | Radio compass tester | |
| CN203405561U (en) | Direct current power source grounding fault searching device | |
| CN110940873A (en) | Device and method for detecting topological relation between user electric meter and transformer | |
| CN212341347U (en) | Cable fault comprehensive testing device | |
| CN213336716U (en) | Multifunctional optical cable detection device | |
| CN111948486A (en) | Automatic identification device and method for distribution room topology of low-voltage power line carrier transmission | |
| CN210954296U (en) | Cable line ground fault detection device and system | |
| CN208158587U (en) | A kind of optical cable is automatically to fine test macro | |
| CN202994956U (en) | Device of searching grounding fault point of circuit | |
| CN204256045U (en) | Satellite time transfer long distance wireless nuclear phase instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |