CN2181138Y - Zero-line broadcasting device - Google Patents
Zero-line broadcasting device Download PDFInfo
- Publication number
- CN2181138Y CN2181138Y CN 93239732 CN93239732U CN2181138Y CN 2181138 Y CN2181138 Y CN 2181138Y CN 93239732 CN93239732 CN 93239732 CN 93239732 U CN93239732 U CN 93239732U CN 2181138 Y CN2181138 Y CN 2181138Y
- Authority
- CN
- China
- Prior art keywords
- line
- trap
- zero line
- broadcasting
- zero curve
- 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
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The utility model relates to a zero curve broadcasting device, which uses power lines to transmit broadcasting signals and is especially suitable for town wire broadcasting or village wire broadcasting in the countryside. The device is composed of a transmitter, a wave blocking machine and a playback horn, one end of the wave blocking machine is connected with a zero curve, and the other end is earthed, one end of a line transformer of the transmitter is connected with the zero curve, and the other end is earthed. Because the wave blocking machine limits audio signals entering electric networks, industrial frequency signals can pass through the zero curve smoothly, the device does not need the modulation of audio signals sounded by an amplifier, the audio signals can be depressurized by the line transformer and is directly transmitted from the zero curve, and a receiving end directly listens in the audio signals through the horn. The utility model is used for wire broadcasting in the countryside and reduces cost largely.
Description
The utility model particularly utilizes power line to transmit the zero line broadcaster of broadcast singal for broadcasting transmits, receiving system.
Zero line broadcasting PLC technology is that the power carrier communication principle is applied in the system of village wired broadcast, and purpose is to realize utilizing the illumination zero line in the electrical network directly to transmit cable broadcasting signal, thereby replaces the village wired broadcast circuit at village to family.All be the broadcast singal that sound amplifier is sent generally in the prior art, after being modulated into high-frequency signal,, use the receiver received signal again, pass through amplified listening by the zero line transmission.As Chinese patent 91104188.5 and 91221239.X.91221239.X patent described " induction type broadcast carrier equipment " is made of transmitter, receiver and trap, after the broadcast singal that transmitter sends its sound amplifier is modulated, the zero line of sending in the electrical network transmits, and the receiver receiving broadcast signal passes through amplified listening.When high-tension electricity appears in zero line (wrong line, break down), the trap ground protection sends and receiver.This patent so the cost of transmission, receiver is higher, uses the user to be difficult to accept because the signal that sound amplifier sends transmits by zero line after need being modulated into high-frequency signal in the rural area.
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art part, provides a kind of and need not modulate, the zero line broadcaster of direct illumination zero line transmission from electrical network, thus make whole installation cost very low, the user is easy to accept.
Solution of the present utility model is: the zero line broadcaster comprises transmitter, trap and the playback loudspeaker that are made of sound amplifier, line transformer, be characterized in trap one termination zero line, other end ground connection, the secondary termination zero line of line transformer, other end ground connection, wherein the position of the secondary connecting to neutral line of line transformer is in the rear end of trap connecting to neutral line position.Its course of work is: by the signal that carry in township or broadcasting station, village, reduce to low-voltage by line transformer, directly send into the illumination zero line in the electrical network, replace program circuit to be sent on each user's loudspeaker by zero line and listen to.Because trap when the 50HZ power frequency component, is Low ESR, make the effective grounding of zero line energy, with the about equipotential of the earth; When the above audio signal of 165HZ, trap is high impedance, and audio signal can be sent on each user's loudspeaker by zero line, but can't pass through trap, so audio signal does not have influence to electrical network.In the solution of the present utility model, trap can be coiling formation on the iron core.
The utility model advantage compared with prior art: because the utility model trap one termination zero line, other end ground connection, and line transformer connecting to neutral line end is in the rear end of trap connecting to neutral line end, so can make the zero line effective grounding, the audio signal that need not simultaneously to modulate can not impact electrical network by the zero line transmission.The broadcast singal that need modulate does not transmit by zero line, is directly listened to by loudspeaker, makes whole installation cost very low, both can directly utilize now general wired broadcasting equipment to carry out wired broadcasting, can deduct again and set up broadcast wire.
The utility model can further specify in conjunction with the accompanying drawings.
Accompanying drawing is the utility model user mode circuit diagram.
The utility model embodiment is as shown in drawings: the three-phase electricity (a, b, c) by transformer output can be directly by dividing a family kilowatt-hour meter D use for user power utilization device W, between the audio signal warp that township or broadcasting station, village sound amplifier Y send after the transformer X step-down, Closing Switch K
1Pass on the zero line and transmit, each the user's loudspeaker E on the zero line O is at Closing Switch K
2The time get final product broadcast listening.Trap LZ is connected on the transformer output zero line O, trap LZ other end ground connection.Trap LZ casing L
2With lightning arrester L
1Ground connection.Because trap LZ can be connected to transformer zero line output end, each zero line O branch that this transformer is administered all can directly carry out zero line broadcasting.Zero line O end can meet one pair of trap LZF in branch; pay trap LZF other end ground connection; like this when neutral line break, misconnection or be out of order when producing high pressure; pay trap LZF one end ground connection; and its terminal voltage is no more than safe voltage; tackle line transformer X mutually and loudspeaker Z plays a protective role, also protect people, animal contact zero line can not cause danger simultaneously.
Claims (3)
1, a kind of zero line broadcaster, comprise the transmitter, trap (LZ) and the playback loudspeaker (E) that constitute by sound amplifier (Y), line transformer (X), it is characterized in that: trap (LZ) termination zero line, other end ground connection, the secondary termination zero line of line transformer (X), one end ground connection, wherein the position of the secondary connecting to neutral line of line transformer (X) is in the rear end of trap (LZ) connecting to neutral line position.
2, zero line broadcaster according to claim 1 is characterized in that: trap (LZ) structure is a coiling on the iron core.
3, zero line broadcaster according to claim 1 and 2 is characterized in that being connected on the zero line branch line end and pays trap (LZF), pays trap (LZF) other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93239732 CN2181138Y (en) | 1993-12-16 | 1993-12-16 | Zero-line broadcasting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93239732 CN2181138Y (en) | 1993-12-16 | 1993-12-16 | Zero-line broadcasting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2181138Y true CN2181138Y (en) | 1994-10-26 |
Family
ID=33814196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93239732 Expired - Fee Related CN2181138Y (en) | 1993-12-16 | 1993-12-16 | Zero-line broadcasting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2181138Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101542869B (en) * | 2006-10-05 | 2012-04-18 | 再生动力系统股份公司 | Method for operating and using a converter as active audio frequency block |
-
1993
- 1993-12-16 CN CN 93239732 patent/CN2181138Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101542869B (en) * | 2006-10-05 | 2012-04-18 | 再生动力系统股份公司 | Method for operating and using a converter as active audio frequency block |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1178354A (en) | Power line communication system using the neutral and ground conductors of a residential branch circuit | |
| US20020002040A1 (en) | Method and apparatus for interfacing RF signals to medium voltage power lines | |
| US20030103307A1 (en) | Method and device for conditioning electric installations in buildings for the rapid transmission of data | |
| ES8403258A1 (en) | Power-line baseband communication system. | |
| JPH08505272A (en) | Transmission networks and filters therefor | |
| JPS6243924A (en) | Switch bypass circuit for line of electric force communication system | |
| WO2003079493A3 (en) | Protecting medium voltage inductive coupler device | |
| CN102223160B (en) | Power line carrier communication transmitting circuit | |
| CN107276635A (en) | A kind of carrier communication module of concentrator | |
| CN105871476A (en) | Electromagnetic wireless through-the-earth communication system for horizontally laying antennas | |
| CN205545257U (en) | A send and receive filtering and interconnected circuit for observeing and control power line carrier device of system | |
| CN102629882A (en) | Power carrier communication system of cable shielding layer | |
| CN2181138Y (en) | Zero-line broadcasting device | |
| CN106685483B (en) | System for coupling power distribution station broadband power line carrier zero line | |
| CN202535354U (en) | Cable shielding layer electric power carrier communication system | |
| CN202261276U (en) | Power line carrier transmission system | |
| CN207460186U (en) | A kind of GPS digital optic-fiber repeater near-end machines of high reliability railway applications | |
| US8242622B2 (en) | Method and system for communicating over neutral power lines | |
| CN2250601Y (en) | Multiple stage protective zero line broadcasting device | |
| CN2190382Y (en) | Electric carrier apparatus with protector for broadcasting | |
| GB2363530A (en) | Signal coupler | |
| CN1025527C (en) | Wire broadcasting method and its system | |
| CN2621334Y (en) | Non-injection inductive coupler | |
| CN109981142B (en) | Power line carrier communication device for crossing 10kV distribution transformer | |
| CN2687954Y (en) | High-resistance multiplexing box for E1 digital relay line monitoring |
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 |