CN2287354Y - Power distribution carrier modem - Google Patents
Power distribution carrier modem Download PDFInfo
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- CN2287354Y CN2287354Y CN 97213025 CN97213025U CN2287354Y CN 2287354 Y CN2287354 Y CN 2287354Y CN 97213025 CN97213025 CN 97213025 CN 97213025 U CN97213025 U CN 97213025U CN 2287354 Y CN2287354 Y CN 2287354Y
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Abstract
The utility model belongs to a line transmission system which can carry out transmission by power distribution lines, being a power distribution carrier modem which can be applied in a power load management system. The utility model adopts frequency modulating carrier transmission and by making use of an integrated technique of high degree, provides a distribution network carrier channel, which makes the reliability of the transmission system high, the cost lower, the transmission distance far and the anti-interference ability strong. The utility model is characterized in that the utility model is composed of a power amplification power supply control circuit (1), a signal modulation demodulation circuit (2), a Power amplification circuit (3), a receiving circuit (4), a signal coupling circuit (5) and a power supply filter circuit.
Description
The utility model belongs to the line transmission system by the power distribution transmission.
Utilizing power line is a kind of important communication means of electric power system as transmission medium, but at present power carrier also is confined on the transmission line, and is mode one to one, and circuit does not have branch, and two ends need add trap in case signal attenuation.For distribution network, because network complexity, branch are many, signal attenuation is big, the unfavorable factor that serious interference etc. are many, though many producers and R﹠D institution have carried out a large amount of research and experiments, effect is all little desirable.As disclosed Chinese patent CN2162746, " with the demodulator of power line transmission of digital carrier wave ", carry out than after mutually with a carrier frequency waveform, export a phase difference and represent the information that demodulation is come out, can receive the digital carrier information of transmitting with power line, but the weak point of its existence is the laser propagation effect poor reliability, and antijamming capability is more weak and equipment cost is higher.
The utility model has adopted the frequency modulated carrier transmission, utilizes the height integrated technology, its objective is the carrier channel that a distribution is provided, and makes transmission system reliability height, and cost is low, long transmission distance, and antijamming capability is strong.
The utility model is achieved in that the input of distribution carrier modem by the output termination power amplifier (3) of the output of amplifier power supply control circuit (1) and modulating and demodulating signal circuit (2), the input of the output termination signal coupling circuit (5) of power amplifier (3), the input of the output termination receiving circuit (4) of coupling circuit (5), the output of receiving circuit (4), electric source filter circuit (6) connects the input of modulating and demodulating signal circuit (2) respectively.
The base series resistor R50 of triode V2 connects control signal ZCON end in the amplifier power supply control circuit (1), the grounded emitter of V2, collector electrode also connects base stage and the resistance R 29 of triode V5, another termination positive source of R29, the grounded emitter of V5, collector series resistance R30 connects triode V7 base stage, the collector electrode series connection R31 of V5 connects the base stage of triode V6, the V6 emitter connects+15V, simultaneously by capacitor C 15 ground connection, the collector electrode of V6 connects the collector electrode of power amplifier (3) V10, the emitter of V7 connects the emitter of V6, and the collector series resistance R32 of V7 connects triode V8 base stage, and the emitter of V8 connects-15V, and series capacitance C34 ground connection, the collector electrode of V8 connects the collector electrode of triode V11 in the power amplifier (3), and the base series resistor R1 of V9 connects ZCON end, the grounded emitter of V9, collector series resistance R2 connects+5V, and the collector electrode of V9 connects the pin 10 of integrated package U12 in the modulating and demodulating signal circuit (2) simultaneously.
In the modulating and demodulating signal circuit (2), integrated package U12 selects ST7536 for use, its pin 3,4,11,22,8 ground connection, pin 15,16,27 difference series resistance R37, R36, R39 ground connection, the pin 15 of U12,16 difference tandem tap S5, S6 connects+5V, pin 17 series capacitance C13 and resistance R 38 ground connection, the C14 ground connection of connecting simultaneously, pin 13,14 connect series capacitance C11 behind the two ends of crystal oscillator J respectively, C12 ground connection, pin 18 series capacitance C27 pins 9, pin 23, pin 21 connects-5V, and pin 23 connects+5V, pin 23 is series resistance R46 pin 2 simultaneously, and the plus earth by capacitor C 24, pin 20 series capacitance C29 pins 19, pin 24 connects the resistance R 42 of receiving circuit (4), pin 28 connects the resistance R 40 of power amplifier (3), pin 1 connects the resistance R 50 of amplifier power supply control circuit (1), and the other end of R50 is drawn and made control end, pin 12, pin 5 is drawn as the data communication mouth.
Amplifier A1:A selects LM347 for use in the power amplifier (3), its pin 3 ground connection, capacitor C 16 and resistance R 48 afterwards pin 2 and the resistance R 40 of termination A1:A in parallel, other end connecting resistance R26, R27 and capacitor C 28, another termination triode V10 emitter of R26, the emitter of another termination V11 of R27, voltage-stabiliser tube V13 in another termination signal coupling circuit (5) of C28, the pin 11 of A1:A connects-15V, pin 4 connects+15V, the pin 1 series resistance R41 of A1:A meets triode V3 respectively, the base stage of V4, the collector electrode of V4 connects the collector electrode of V11, and series resistance R28 connects the emitter of triode V3, the base stage of V11 and capacitor C 3, the emitter of another termination triode V4 of C3, the base stage of V10 and resistance R 45, the other end of resistance R 45 meets V3 respectively, the collector electrode of V10.
The end ZRX of middle capacitor C 32 of a termination signal coupling circuit (5) of resistance R 33 and transformer T1 in the receiving circuit (4), the pin 5 of another termination amplifier A1:B of R33, and by resistance R 34 ground connection, pin 6 pin 7 and the series capacitance C18 of A1:B, C18 and connecting resistance R35, capacitor C 19, the other end ground connection of R35, the other end of C19 is by resistance R 49 ground connection, and series resistance R44 connects the pin 9 of amplifier A1:C, and connect pin 8 and the resistance R 42 of A1:C by resistance R 43, the other end of R42 passes through resistance R 47 ground connection, and connects the pin 24 of integrated package U12 in the modulating and demodulating signal circuit (2), pin 10 ground connection of A1:C.
The centre tap of the termination transformer T1 of voltage-stabiliser tube V13 in the signal coupling circuit (5), connect capacitor C 28 in the power amplifier (3) simultaneously, the other end of V13 is by V12 ground connection, one end ground connection of capacitor C 32, the ZRX end of another termination transformer T1, meet the R33 in the receiving circuit (4) simultaneously, the other end ground connection of transformer, the secondary side of transformer is as signal output part.
An end ground connection after capacitor C 30, the C21 parallel connection in the electric source filter circuit (6), another termination+15V, capacitor C 33, an end ground connection after the C20 parallel connection, another termination-15V, an end ground connection after capacitor C 23, the C26 parallel connection, another termination-5V, an end ground connection after capacitor C 22, the C25 parallel connection, another termination+5V.U14 selects linear voltage regulator 7905 for use, its pin 1 ground connection, and pin 3 connects-5V, and pin 2 connects-15V.
Compare with background technology, of the present utility model significantly putting really is:
1, adopt extensive low power consumption integrated circuit, with modulating and demodulating signal, automatic gain, circuit such as built-in switch filtering, automatic freqauency stabilization all are integrated in the chip, stable performance, the reliability height, cost is low.
2, adopt the FSK modulation system, compare strong anti-interference performance with the ASK mode.
3, have the automatic freqauency stabilization circuit, make modulating frequency and frequency, demodulation frequency not be subjected to environmental impacts such as temperature, humidity, high conformity.
4, receiving sensitivity height, the error rate is low, and transmitted power is low, long transmission distance.
Fig. 1 is the structured flowchart of distribution carrier modem (10)
Fig. 2 is the enforcement illustration of the utility model in power load management system
Fig. 3 is the circuit diagram of distribution carrier modem (10)
Be described further below in conjunction with embodiment.Present embodiment is the practical application of distribution carrier modem (10) in power load management system.Transformer station's carrier wave data set (7) is made up of modem (8), main control unit (9), distribution carrier modem (10).Carrier load control terminal (13) is made up of CPU module (12) and distribution carrier modem (10).Carrier load control terminal (13) is more than one at least, can be many, this system works situation is at first many load control terminals (13) to be numbered, send control signal by central machine and give main control unit (9) through modem (8), main control unit becomes conversion of signals digital signal to give distribution carrier modem (10), is downloaded on the distribution wire to coupling unit (11) and by C51, C52, C53 after modulation, amplification.Signal is given distribution carrier modem (10) through capacitor C 54 and coupling unit (11), handle for after the signal demodulation CPU module (12), CPU module (12) is given coupling unit (11) with central machine desired data signal after distribution carrier modem (10) modulation, amplification then, and be downloaded on the distribution wire by C54, the opposite side signal is given coupling circuit (11) through C51, C52, C53, arrive distribution carrier modem (10) demodulation again, the signal after the demodulation is given central machine through main control unit (9) and modem (8).The utility model can carry out signal transmission reliably on 10KV or 35KV distribution line, transfer management of power use automated system such as automation that a kind of data transmission channel is provided for load management, distribution network automated and county.
Claims (7)
1, a kind of distribution carrier modem, it is characterized in that by amplifier power supply control circuit (1), modulating and demodulating signal circuit (2), power amplifier (3), receiving circuit (4), signal coupling circuit (5) and electric source filter circuit (6) are formed, its annexation is: the input of the output termination power amplifier (3) of the output of amplifier power supply control circuit (1) and modulating and demodulating signal circuit (2), the input of the output termination signal coupling circuit (5) of power amplifier (3), the input of the output termination receiving circuit (4) of coupling circuit (5), receiving circuit (4), the output of electric source filter circuit (6) connects the input of modulating and demodulating signal circuit (2) respectively.
2, distribution carrier modem according to claim 1, the base series resistor R50 that it is characterized in that amplifier power supply control circuit (1) triode V2 connects control signal ZCON end, the grounded emitter of V2, collector electrode also meets base stage and the circuit R29 of triode V5, another termination positive source of R29, the grounded emitter of V5, collector series resistance R30 connects triode V7 base stage, the collection utmost point series connection R31 of V5 connects the base stage of triode V6, the V6 emitter connects+15V, by capacitor C 15 ground connection, the collector electrode of V6 connects the collector electrode of power amplifier (3) V10 simultaneously, and the emitter of V7 connects the emitter of V6, the collector series resistance R32 of V7 connects triode V8 base stage, the emitter of V8 connects-15V, and series capacitance C34 ground connection, and the collector electrode of V8 connects the collector electrode of triode V11 in the power amplifier (3), the base series resistor R1 of V9 connects the ZCON end, the grounded emitter of V9, collector series resistance R2 connects+5V, and the collector electrode of V9 connects the pin 10 of integrated package U12 in the modulating and demodulating signal circuit (2) simultaneously.
3, distribution carrier modem according to claim 1, it is characterized in that integrated package U12 selects ST7536 for use in the modulating and demodulating signal circuit (2), its pin 3,4,11,22,8 ground connection, pin 15,16,27 difference series resistance R37, R36, R39 ground connection, the pin 15 of U12,16 difference tandem tap S5, S6 connects+5V, pin 17 series capacitance C13 and resistance R 38 ground connection, the C14 ground connection of connecting simultaneously, pin 13,14 connect series capacitance C11 behind the two ends of crystal oscillator J respectively, C12 ground connection, pin 18 series capacitance C27 pins 9, pin 23, pin 21 connects-5V, pin 9,23 connect+5V, and series resistance R46 pin 2 simultaneously, and pass through the plus earth of capacitor C 24, pin 20 series capacitance C29 pins 19, pin 24 connects the resistance R 42 of receiving circuit (4), and pin 28 connects the resistance R 40 of power amplifier (3), and pin 1 connects the resistance R 50 of amplifier power supply control circuit (1), the other end of R50 is drawn and is made control end, pin 12, pin 5 is drawn as the data communication mouth.
4, distribution carrier modem according to claim 1, it is characterized in that amplifier A1:A selects LM347 for use in the power amplifier (3), its pin 3 ground connection, capacitor C 16 and resistance R 48 afterwards pin 2 and the resistance R 40 of termination A1:A in parallel, other end connecting resistance R26, R27 and capacitor C 28, another termination triode V10 emitter of R26, another termination V11 emitter of R27, voltage-stabiliser tube V13 in another termination signal coupling circuit (5) of C28, the pin 11 of A1:A connects-15V, pin 4 connects+15V, the pin 1 series resistance R41 of A1:A meets triode V3 respectively, the base stage of V4, the collector electrode of V4 connects the collector electrode of V11, and series resistance R28 connects the emitter of triode V3, the base stage of V11 and capacitor C 3, the emitter of another termination triode V4 of C3, the base stage of V10 and resistance R 45, the other end of resistance R 45 meets V3 respectively, the collector electrode of V10.
5, distribution carrier modem according to claim 1, it is characterized in that a capacitor C 32 in the termination signal coupling circuit (5) of resistance R 33 in the receiving circuit (4) and the end ZRX of transformer T1, the pin 5 of another termination amplifier A1:B of R33, and by resistance R 34 ground connection, 6 pin of A1:B meet 7 pin and series capacitance C18, C18 and connecting resistance R35, capacitor C 19, the other end ground connection of R35, the other end of C19 is by resistance R 49 ground connection, and series resistance R44 connects the pin 9 of amplifier A1:C, and connect pin 8 and the resistance R 42 of A1:C by resistance R 43, the other end of R42 is by resistance R 47 ground connection, and connect the pin 24 of integrated package U12 in the modulating and demodulating signal circuit (2), pin 10 ground connection of A1:C.
6, distribution carrier modem according to claim 1, the centre tap that it is characterized in that the termination transformer T1 of voltage-stabiliser tube V13 in the signal coupling circuit (5), connect capacitor C 28 in the power amplifier (3) simultaneously, the other end of V13 is by V12 ground connection, one end ground connection of capacitor C 32, the ZRX end of another termination transformer T1, the R33 in the receiving circuit (4) simultaneously, the other end ground connection of transformer, the secondary side of transformer is as signal output part.
7, distribution carrier modem according to claim 1 is characterized in that an end ground connection after capacitor C 30 in the electric source filter circuit (6), the C21 parallel connection, another termination+15V; Capacitor C 33, an end ground connection after the C20 parallel connection, another termination-15V; An end ground connection after capacitor C 23, the C26 parallel connection, another termination-5V; An end ground connection after capacitor C 22, the C25 parallel connection, another termination+5V.U14 selects linear voltage regulator 7905 for use, its pin 1 ground connection, and pin 3 connects-5V, and pin 2 connects-15V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97213025 CN2287354Y (en) | 1997-03-25 | 1997-03-25 | Power distribution carrier modem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97213025 CN2287354Y (en) | 1997-03-25 | 1997-03-25 | Power distribution carrier modem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2287354Y true CN2287354Y (en) | 1998-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97213025 Expired - Fee Related CN2287354Y (en) | 1997-03-25 | 1997-03-25 | Power distribution carrier modem |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2287354Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016138847A1 (en) * | 2015-03-01 | 2016-09-09 | Edge Electrons Limited | Method and apparatus to solve pfc capacitor reduction of line aflc ripple without passive filters |
| CN112367100A (en) * | 2020-09-30 | 2021-02-12 | 北京机电工程研究所 | Power line carrier communication control circuit based on Ethernet and serial interface |
-
1997
- 1997-03-25 CN CN 97213025 patent/CN2287354Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016138847A1 (en) * | 2015-03-01 | 2016-09-09 | Edge Electrons Limited | Method and apparatus to solve pfc capacitor reduction of line aflc ripple without passive filters |
| CN112367100A (en) * | 2020-09-30 | 2021-02-12 | 北京机电工程研究所 | Power line carrier communication control circuit based on Ethernet and serial interface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE; FROM: FENG XIJUN TO: BAI YIFENG |
|
| CP03 | Change of name, title or address |
Address after: 410013 Changsha yinpen Road No. 305 Hunan wasion Electronic Co. Ltd. Patentee after: Bai Yifeng Address before: Taiyuan mining machinery factory gold branch factory Co-patentee before: Wang Xili Patentee before: Feng Xijun |
|
| 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 |