CN108574513A - A kind of power carrier communication device for capableing of anti-stop signal decaying - Google Patents
A kind of power carrier communication device for capableing of anti-stop signal decaying Download PDFInfo
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- CN108574513A CN108574513A CN201710139636.8A CN201710139636A CN108574513A CN 108574513 A CN108574513 A CN 108574513A CN 201710139636 A CN201710139636 A CN 201710139636A CN 108574513 A CN108574513 A CN 108574513A
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- Prior art keywords
- triode
- capacitance
- resistance
- diode
- inductance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/548—Systems for transmission via power distribution lines the power on the line being DC
-
- 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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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The invention discloses a kind of power carrier communication device for capableing of the decaying of anti-stop signal, including DC power supply, power carrier spread spectrum chip, the first capacitance are to the 5th capacitance, first resistor to the 8th resistance, the first diode to the 5th diode, the first triode to the 4th triode, the first inductance, the second inductance, third inductance and transformer.The present invention constitutes power carrier communication module using power carrier spread spectrum chip and a handful of electronic component, efficiently solves power line carrier communication in the prior art and there is the problems such as interference, line loss, the input impedance of power line is small, signal decaying is strong, interference is big, time variation is strong.By power line communication, additional wiring is not needed, enormously simplifies the difficulty of networking, cost is reduced, intelligent meter data recording is can be applied not only to, can also simply be embedded in very much intelligent appliance, it in the very big equipment of the dosages such as streetlight monitoring, is widely used, is conducive to promote.
Description
Technical field
The present invention relates to a kind of power carrier communication circuit more particularly to a kind of power carriers for capableing of anti-stop signal decaying
Communication device.
Background technology
Voltage power-line carrier communication technology can be widely applied to industry automatic control, electric energy management, home wiring control, fire prevention
The occasions such as alarm and terminal interface.Primarily directed to 400V or less power supply systems, using power line as transmission medium
Carry out bi-directional transfer of data, but there is the problems such as interference, line loss in power line carrier communication in the prior art, so as to cause electric power
The input impedance of line is small, and signal decaying is strong, and interference is big, and has very strong time variation.
Invention content
The purpose of the present invention is that solve the above-mentioned problems and provides a kind of electric power load for capableing of anti-stop signal decaying
Wave communication device.
The present invention is achieved through the following technical solutions above-mentioned purpose：
The present invention includes DC power supply, power carrier spread spectrum chip, the first capacitance to the 5th capacitance, first resistor to the 8th
Resistance, the first diode to the 5th diode, the first triode to the 4th triode, the first inductance, the second inductance, third inductance
And transformer, the current collection of the positive while collector, first triode with second triode of the DC power supply
Pole is connected with the first end of the first resistor, the cathode of the DC power supply while the first end with the 4th resistance, institute
State the first end of the 5th resistance, the first end of the 6th resistance, the first end of the third capacitance, first inductance
One end, the 4th diode cathode connected with the first end of the transformer secondary output, the second end of the first resistor is same
When connect with the first end of the base stage of first triode, the first end of the second resistance and first capacitance, it is described
The emitter of first triode is connect with the first end of the base stage of second triode and the 3rd resistor simultaneously, and described the
The emitters of two triodes is connect with the emitter of the first end of the 4th capacitance and the 4th triode simultaneously, and described the
The second end of one capacitance is connect with the signal output end of the power carrier spread spectrum chip, the second end of the second resistance and institute
The anode connection of the first diode is stated, the positive of the cathode of first diode and second diode connect, and described the
The cathode of two diodes is connect with the second end of the base stage of the third transistor and the 4th resistance simultaneously, the third electricity
The second end of resistance is connect with the emitter of the third transistor, and the collector of the third transistor is electric with the described 5th simultaneously
The second end of resistance is connected with the base stage of the 4th triode, and the of the collector of the 4th triode and the 6th resistance
Two ends connect, and the signal input part of the power carrier spread spectrum chip is connect with the first end of second capacitance, and described second
The second end of capacitance simultaneously with the first end of the third capacitance, the second end of first inductance and the 7th resistance the
One end connects, the second end of the 7th resistance simultaneously with the cathode of the third diode, the transformer secondary output second
End is connected with the first end of second inductance, and the second end of second inductance is connect with the second end of the 4th capacitance,
The anode of the third diode is connect with the anode of the anode of the 5th diode and the 4th diode simultaneously, described
The cathode of 5th diode is grounded, and the first end of the primary is connect with the first end of the third inductance, and described the
The second end of three inductance is connect with the first end of the 5th capacitance, and the second end of the 5th capacitance is electric with the described 8th simultaneously
The first end of resistance is connected with the first end of power cable, the second end of the primary simultaneously with the 8th resistance the
Two ends are connected with the second end of the power cable.
Specifically, first triode and second triode are NPN type triode, the third transistor and institute
It is PNP type triode to state the 4th triode.
The beneficial effects of the present invention are：
The present invention constitutes power carrier communication module using power carrier spread spectrum chip and a handful of electronic component, has
Effect solves power line carrier communication in the prior art and has that interference, line loss, the input impedance of power line is small, signal is decayed
By force, the problems such as interference is big, time variation is strong.By power line communication, additional wiring is not needed, enormously simplifies the difficulty of networking,
Cost is reduced, intelligent meter data recording is can be applied not only to, can also simply be embedded in very much intelligent appliance, the use such as streetlight monitoring
It measures in very big equipment, is widely used, be conducive to promote.
Description of the drawings
Fig. 1 is the circuit structure schematic diagram of the present invention.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings：
As shown in Figure 1：The present invention includes DC power supply, power carrier spread spectrum chip IC, the first capacitance C1 to the 5th capacitance
C5, first resistor R1 are to the 8th resistance R8, the first diode D1 to the 5th diode D5, the first triode T1 to the 4th triode
T4, the first inductance L1, the second inductance L2, third inductance L3 and transformer T, DC power supply anode simultaneously with the second triode T2
Collector, the first triode T1 collector connected with the first end of first resistor R1, the cathode of DC power supply is simultaneously with the
The first end of four resistance R4, the first end of the 5th resistance R5, the first end of the 6th resistance R6, the first end of third capacitance C3,
The first end of one inductance L1, the first end of T grade of cathode and transformer of the 4th diode D4 connect, and the second of first resistor R1
End is connect with the first end of the base stage of the first triode T1, the first end of second resistance R2 and the first capacitance C1 simultaneously, and the one or three
The emitter of pole pipe T1 is connect with the first end of the base stage of the second triode T2 and 3rd resistor R3 simultaneously, the second triode T2's
Emitter is connect with the emitter of the first end of the 4th capacitance C4 and the 4th triode T4 simultaneously, the second end of the first capacitance C1 with
The signal output end of power carrier spread spectrum chip IC connects, and the second end of second resistance R2 and the anode of the first diode D1 connect
It connects, the anode of the cathode of the first diode D1 and the second diode D2 connects, the cathode of the second diode D2 while with the three or three
The base stage of pole pipe is connected with the second end of the 4th resistance, and the second end of 3rd resistor is connect with the emitter of third transistor T3,
The collector of third transistor T3 is connect with the base stage of the second end of the 5th resistance R5 and the 4th triode T4 simultaneously, the four or three pole
The collector of pipe T4 is connect with the second end of the 6th resistance R6, the signal input part and the second capacitance of power carrier spread spectrum chip IC
The first end of C2 connects, the second end of the second capacitance C2 while first end, the second end of the first inductance L1 with third capacitance C3
Connected with the first end of the 7th resistance R7, the second end of the 7th resistance R7 simultaneously with cathode, the transformer of third diode D3 T times
The second end of grade is connected with the first end of the second inductance L2, and the second end of the second inductance L2 connects with the second end of the 4th capacitance C4
It connecing, the anode of third diode D3 is connect with the anode of the anode of the 5th diode D5 and the 4th diode D4 simultaneously, and the five or two
The cathode of pole pipe D5 is grounded, and the first end of transformer T primary is connect with the first end of third inductance L3, and the second of third inductance L3
End is connect with the first end of the 5th capacitance C5, and the second end of the 5th capacitance C5 is electric with the first end and electric power of the 8th resistance R8 simultaneously
The first end of cable connects, the second end of transformer T primary while the second end with the second end and power cable of the 8th resistance R8
Connection.First triode T1 and the second triode T2 is NPN type triode, and third transistor T3 and the 4th triode T4 are PNP
Type triode.
As shown in Figure 1：First triode T1 and the second triode T2 constitutes NPN type multiple tube, third transistor T3 and the
Four triode T4 constitute positive-negative-positive multiple tube, to form mutual symmetry power amplification circuit.Wherein, the second triode T2 and
Four triode T4 use the high power tube of same model, and the characteristic curve to realize the two is symmetrical.Power carrier spread spectrum chip IC
The carrier signal of generation exports after power amplification circuit amplifies, and contains harmonic wave.The main transmission interference frequency of system is to send
Signal second harmonic and triple-frequency harmonics (centre carrier frequency of power carrier spread spectrum chip IC be 120kHz, second harmonic and
Triple-frequency harmonics is respectively 240k.Hz and 360kHz), in order to reduce the harmonic pollution to power grid, shaping need to be filtered.4th electricity
The bandwidth-limited circuit for holding C4 and the second inductance L2 compositions carries out shaping filter to the carrier signal of transmission；When power carrier is spread
When chip IC is in transmission state, the power carrier spread spectrum chip IC modulated spread spectrum signals generated are coupled to low-voltage power line
On：When power carrier spread spectrum chip IC is in reception state, come the carrier signal coupling on low-voltage power line to input electricity
In power frequency spectrum chip IC.Carrier wave coupling unit is made of transformer T, the 5th capacitance C5 and third inductance L3.Transformer T choosings
With 1：1 isolating transformer.The signal of the 50Hz on filtering power lines is isolated in transformer by the 5th capacitance C5 with power line, this
Sample may be prevented from low frequency signal and enter circuit and certain high-frequency signals be made to pass through.Just in case the 5th capacitor C5 lost because of short circuit
The ability of 50Hz signals is filtered, interface circuit will be damaged.Therefore the 5th capacitance C5 will select the X2 types with short-circuit protection function
Capacitor.5th capacitance C5 and third inductance L3 also form bandpass filter, are further filtered to carrier signal.Circuit, which filters out, to be come
From the noise in power grid, these noises can reduce the demodulation function of power carrier spread spectrum chip IC.It selects by third capacitance C3, the
The passive filter of one inductance L1 and the 7th resistance R7 compositions is better than active filter, this is because active filter will produce
One and the reception comparable white noise of signal.Using shunt-resonant circuit form.The centre frequency of shunt circuit is by third capacitance
The value of C3 and the first inductance L1 determine, are designed as 120kHz.
Claims (2)
1. a kind of power carrier communication device for capableing of anti-stop signal decaying, it is characterised in that：Including DC power supply, power carrier
Spread spectrum chip, the first capacitance to the 5th capacitance, first resistor to the 8th resistance, the first diode to the 5th diode, the one or three
Pole pipe to the 4th triode, the first inductance, the second inductance, third inductance and transformer, the anode of the DC power supply simultaneously with
The collector of second triode, first triode collector connected with the first end of the first resistor, it is described
The cathode of DC power supply simultaneously with the first end of the 4th resistance, the first end of the 5th resistance, the 6th resistance
First end, the first end of the third capacitance, the first end of first inductance, the cathode of the 4th diode and the change
The first end of depressor secondary connects, the second end of the first resistor simultaneously with the base stage of first triode, described second
The first end of resistance is connected with the first end of first capacitance, and the emitter of first triode is simultaneously with the described 2nd 3
The base stage of pole pipe is connected with the first end of the 3rd resistor, the emitter of second triode simultaneously with the 4th capacitance
First end connected with the emitter of the 4th triode, the second end of first capacitance spreads core with the power carrier
The signal output end of piece connects, and the second end of the second resistance is connect with the anode of first diode, and the described 1st
The anode of the cathode of pole pipe and second diode connect, the cathode of second diode and meanwhile with the third transistor
Base stage connected with the second end of the 4th resistance, the emitter of the second end of the 3rd resistor and the third transistor
The collector of connection, the third transistor connects with the second end of the 5th resistance and the base stage of the 4th triode simultaneously
It connects, the collector of the 4th triode is connect with the second end of the 6th resistance, the letter of the power carrier spread spectrum chip
Number input terminal is connect with the first end of second capacitance, the second end of second capacitance simultaneously with the third capacitance the
One end, first inductance second end connected with the first end of the 7th resistance, the second end of the 7th resistance is simultaneously
It is connect with the first end of the cathode of the third diode, the second end of the transformer secondary output and second inductance, it is described
The second end of second inductance is connect with the second end of the 4th capacitance, and the anode of the third diode is simultaneously with the described 5th
The anode connection of the anode and the 4th diode of diode, the cathode of the 5th diode is grounded, at the beginning of the transformer
The first end of grade is connect with the first end of the third inductance, the second end of the third inductance and the first of the 5th capacitance
The second end of end connection, the 5th capacitance is connect with the first end of the first end of the 8th resistance and power cable simultaneously,
The second end of the primary is connect with the second end of the second end of the 8th resistance and the power cable simultaneously.
2. the power line carrier, PLC interface arrangement according to claim 1 for capableing of anti-stop signal decaying, it is characterised in that：Institute
It is NPN type triode to state the first triode and second triode, and the third transistor and the 4th triode are PNP
Type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710139636.8A CN108574513A (en) | 2017-03-09 | 2017-03-09 | A kind of power carrier communication device for capableing of anti-stop signal decaying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710139636.8A CN108574513A (en) | 2017-03-09 | 2017-03-09 | A kind of power carrier communication device for capableing of anti-stop signal decaying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108574513A true CN108574513A (en) | 2018-09-25 |
Family
ID=63577934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710139636.8A Withdrawn CN108574513A (en) | 2017-03-09 | 2017-03-09 | A kind of power carrier communication device for capableing of anti-stop signal decaying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108574513A (en) |
-
2017
- 2017-03-09 CN CN201710139636.8A patent/CN108574513A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180925 |