CN2481065Y - Single sampler for power line transmission - Google Patents
Single sampler for power line transmission Download PDFInfo
- Publication number
- CN2481065Y CN2481065Y CN 01217297 CN01217297U CN2481065Y CN 2481065 Y CN2481065 Y CN 2481065Y CN 01217297 CN01217297 CN 01217297 CN 01217297 U CN01217297 U CN 01217297U CN 2481065 Y CN2481065 Y CN 2481065Y
- Authority
- CN
- China
- Prior art keywords
- transformer
- power distribution
- sampling device
- ground
- signal sampling
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The utility model relates to a single sampler for power line transmission, comprising a capacitance and a transformer, wherein one end of the two ends of the transformer primary side winding is connected with a power network zero line or a power network live wire through the capacitance, and the other end is earthed. The utility model has the advantage that the sampling process and the sampling signals are not affected by power network terminals basically.
Description
The utility model relates to a kind of circuit that passes through coupling, obstruction or the by-passing signal of power distribution system for transmitting, particularly a kind of signal sampling device of power distribution transmission.
The signal sampling device of the power distribution transmission in the routine techniques is made up of filter and transformer, wherein the former limit of Transformer Winding two terminals connect zero line and the live wire in the power distribution respectively, like this, interference signal on the power distribution is simultaneously sampled with high-frequency modulation signal, cause high-frequency modulation signal to be difficult to demodulation, cause the communication device that utilizes the power distribution transmission in use must select the less period of interference signal, finally can not get practical application and popularization.
The purpose of this utility model is to overcome weak point of the prior art, is subjected to the electrical network load effect less in a kind of sampling process and provide, the signal sampling device of interference signal small electric power distribution wire transmission in the sampled signal.
The purpose of this utility model realizes by following approach.
The signal sampling device that power distribution transfers, comprise electric capacity and transformer, it constitutes main points: the wherein termination in the winding two ends of the former limit of transformer be connected by electric capacity or with the electrical network zero line or with the electrical network live wire in wherein one be connected another termination ground connection.
All power consumption equipments all must produce between at least two wiring (phase line and zero line) the load effect of electrical network, and all are loaded with high-frequency modulation signal in every wiring.The utility model is only taken a sample to a wiring now, and the load variations of electric terminal will be difficult to sampled signal is exerted an influence.
Here, the connected mode of electric capacity and transformer is formed a kind of high-frequency signal passage, and winding one termination, the former limit of transformer both can single connecting to neutral line, the line of also can singly starting to exchange fire, because the connecting to neutral line equals to connect three-phase, then there is the problem that needs to arrive again through winding other phase in the line of starting to exchange fire, therefore, is best with single connecting to neutral line.
Sort signal sampler described in the utility model also can be used as sender unit simultaneously.
The purpose of this utility model can also realize by following approach.
There are several modes on the ground of ground connection indication, below is wherein two kinds:
The ground of ground connection indication is the ground (being the earth) of transformer neutral point;
The ground of ground connection indication is the ground of wiring board, and at this moment, the line that connects winding one termination, the former limit of transformer and power network wiring (zero line or live wire) becomes an antenna.
Mate with electrical network better for the impedance that makes sampler, can take following mode:
Transformer is a kind of variable transformer;
Electric capacity is a kind of variable capacitance.
In sum, the utility model has following advantage compared to existing technology: sampling process and sampled signal are not subjected to the influence of grid equipment load substantially, thereby the communication signal decay that brings because of this load variations and interference source, problem that interference signal is many have been solved, a time in office all can be sampled to ideal signal, make this undertaken by power line that the application of transmission manner and popularization provide may.
Accompanying drawing is the circuit diagram of the utility model most preferred embodiment.
Below we carry out more detailed description to the utility model in conjunction with the accompanying drawings.
Most preferred embodiment:
With reference to accompanying drawing, the signal sampling device of power distribution transmission comprises electric capacity 2 and transformer 1, and winding one termination, the former limit of transformer is by the zero line of electric capacity 2 outside electric power network, and another termination connects the ground of transformer neutral point.Electric capacity 2 is formed a kind of high-frequency signal passage with transformer 1 former limit winding, is carried in high-frequency modulation signal on the electrical network zero line by this high-frequency signal passage institute gating, but and is become restituted signal after the transformation and export to follow-up demodulating equipment from transformer secondary winding.Electric capacity 2 is a kind of variable capacitances.
It is same as the prior art that present embodiment is not stated part.
Claims (5)
1, the signal sampling device that transfers of power distribution, comprise electric capacity (2) and transformer (1), it is characterized in that, wherein termination in the winding two ends of the former limit of transformer (1) by electric capacity (2) or be connected with the electrical network zero line or with the electrical network live wire in wherein one be connected another termination ground connection.
2, the signal sampling device of power distribution transmission according to claim 1 is characterized in that ground connection refer to is the ground of transformer (1) neutral point.
3, the signal sampling device of power distribution transmission according to claim 1 is characterized in that the ground of ground connection indication is the ground of wiring board.
4, the signal sampling device of power distribution transmission according to claim 1 is characterized in that transformer (1) is a kind of variable transformer.
5, the signal sampling device of power distribution transmission according to claim 1 is characterized in that electric capacity (2) is a kind of variable capacitance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01217297 CN2481065Y (en) | 2001-01-20 | 2001-01-20 | Single sampler for power line transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01217297 CN2481065Y (en) | 2001-01-20 | 2001-01-20 | Single sampler for power line transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2481065Y true CN2481065Y (en) | 2002-03-06 |
Family
ID=33635558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01217297 Expired - Fee Related CN2481065Y (en) | 2001-01-20 | 2001-01-20 | Single sampler for power line transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2481065Y (en) |
-
2001
- 2001-01-20 CN CN 01217297 patent/CN2481065Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101651472B (en) | Carrier wave communication device of power line and carrier wave communication method thereof | |
| SA01220201B1 (en) | High frequency communication network on different lines | |
| AU2011200121A1 (en) | Signal repeater system | |
| CN104506375B (en) | Power wire broadband carrier communication network module test system | |
| JPH0243383B2 (en) | ||
| CN215641543U (en) | Line monitoring terminal with characteristic signal sending and identifying functions | |
| US6952159B1 (en) | Coupling device | |
| CN105187096A (en) | Power line carrier signal coupling circuit | |
| CN204068968U (en) | Based on the signal of telecommunication separator of power line carrier | |
| CN204258836U (en) | A kind of power wire broadband carrier communication network module test macro | |
| CN2481065Y (en) | Single sampler for power line transmission | |
| CN1120582C (en) | Integral power distribution power line carrier equipment | |
| CN109638401A (en) | A kind of Wilkinson power divider of broadband not equal part | |
| CN209266581U (en) | Multimode antenna device | |
| CN106685483B (en) | System for coupling power distribution station broadband power line carrier zero line | |
| CN2550854Y (en) | Far end control signal processor for electric equipment | |
| CN206595993U (en) | A kind of single-phase meter bandwidth carrier communicator | |
| CN117559936A (en) | Impedance matching circuit based on coupling transmission line and application | |
| CN201294254Y (en) | Short-wave large-power directional coupler | |
| CN1181624C (en) | Power Distribution Line Transmission Mode and Signal Sampling Device in Transmission System | |
| CN201113557Y (en) | Coupling bridging device for mixing line carrier signal spanning 'line switch ' | |
| CN101383443B (en) | Short-wave large-power directional coupler | |
| CN223611622U (en) | A single-phase common-mode interference separation system | |
| CN206585563U (en) | A kind of three-phase kilowatt-hour meter bandwidth carrier communicator | |
| CN2560177Y (en) | Interface circuit for electric modulator demodulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |