CN207732759U - A kind of SCM Based low-voltage powerline carrier communication interface circuit - Google Patents
A kind of SCM Based low-voltage powerline carrier communication interface circuit Download PDFInfo
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- CN207732759U CN207732759U CN201820157128.2U CN201820157128U CN207732759U CN 207732759 U CN207732759 U CN 207732759U CN 201820157128 U CN201820157128 U CN 201820157128U CN 207732759 U CN207732759 U CN 207732759U
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Abstract
A kind of SCM Based low-voltage powerline carrier communication interface circuit provided by the utility model, it is related to field of communication technology, the circuit includes microcontroller, carrier chip and signal processing module, signal processing module includes amplifying circuit, termination power and filter circuit, carried out data transmission by synchronous communication mode between microcontroller and carrier chip, the data sending terminal of carrier chip is electrically connected with the input terminal of amplifying circuit, the output end of amplifying circuit is electrically connected with one end of termination power, the other end of termination power is electrically connected with power line, the input terminal of filter circuit is conllinear with the output end of amplifying circuit, the output end of filter circuit is electrically connected with the data receiver of carrier chip.The utility model circuit structure is simple, can effectively ensure that the transmission range and reliability of communication.
Description
Technical field
The utility model is related to field of communication technology, especially a kind of SCM Based low-voltage powerline carrier communication connects
Mouth circuit.
Background technology
Currently, there are many kinds of the well known communication technologys, such as microwave communication, fiber optic communication, mobile communication, Bluetooth communication, this
It is not applicable in some closing places although a little communication technologys are more convenient, such as mine, and higher operating costs, the communication technology
The middle also low-voltage powerline carrier communication for applying wide, it is communicated using the power line of 220V/50Hz, is applicable in
Range is wide, can close place in some above-mentioned and carry out stable signal transmission, and have spy of simple structure and low cost
Point, however, due to 220V/50Hz power lines there are intrinsic noise and decaying the characteristics of, the reliability meeting of power line communication
It is influenced by transmission range, such as：From PC machine（Or other equipment）If the signal sent out is carried out remote using power line
Distance Transmission, then the reliability of the signal can not be high, in order to reduce such influence, PC machine（Or other equipment）With power line it
Between can connect a special interface circuit to improve the reliability of communication, but traditional interface circuit is usually more complex.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of SCM Based low-voltage powers simple in structure
Line carrier communication interface circuit can effectively ensure that the transmission range and reliability of communication.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution：A kind of SCM Based low pressure
Line carrier communication interface circuit, including microcontroller, carrier chip and signal processing module, the signal processing module packet
Amplifying circuit, termination power and filter circuit are included, by synchronous communication mode into line number between the microcontroller and carrier chip
According to transmission, the data sending terminal of the carrier chip is electrically connected with the input terminal of amplifying circuit, the output end of the amplifying circuit
It is electrically connected with one end of termination power, the other end of the termination power is electrically connected with power line, the input of the filter circuit
End is conllinear with the output end of amplifying circuit, and the output end of the filter circuit is electrically connected with the data receiver of carrier chip；
The microcontroller is used to control carrier chip and sends the data of PC machine and receive the data of power line；
The carrier chip is used to send the data of PC machine and receives the data of power line；
The amplifying circuit is used to the data-signal that carrier chip is sent being amplified processing；
The termination power and filter circuit are for eliminating the interference signal on power line to protect internal circuit.
Further, the microcontroller uses AT89C52.
Further, the carrier chip uses ST7538.
Further, the power amplification element of the amplifying circuit uses NPN type triode and PNP type triode.
Further, the termination power include the high-pass filtering circuit that is made of coupling inductance T1 and capacitance C204 with
And the TVS pipe VD7 in parallel with the high-pass filtering circuit.
Further, the filter circuit includes capacitance C205, capacitance C206 and inductance L2, the capacitance C205, electricity
Hold C206, inductance L2 composes in parallel filter circuit, the filter in parallel with TVS pipe VD7 after the filter circuit series resistance R203
It is electrically connected with carrier chip after the series capacitance C207 of swash road.
Preferably, the filter circuit further includes diode VD5 and diode VD6, the diode VD5 and diode
VD6 inversions compose in parallel clamp circuit, and the clamp circuit is in parallel with filter circuit.
A kind of circuit structure of above-mentioned SCM Based low-voltage powerline carrier communication interface circuit and work are former
Reason is very simple：The data of PC machine are sent under the control of microcontroller by carrier chip, and carrying out power by amplifying circuit puts
Greatly, be sent to power line using termination power, and the data of power line by termination power and filter circuit it is anti-interference after
It is sent to carrier chip, then receives and send to PC machine by carrier chip under the control of microcontroller, in addition, above-mentioned microcontroller
Carrier chip transceiving data can not only be controlled, and stability is good, above-mentioned amplifying circuit can not only be carried out to sent data
Enhanced processing, and fidelity is high, above-mentioned termination power, filter circuit can not only carry out anti-interference place to data to be received
Reason, and carrier signal loss is low, in conclusion a kind of this SCM Based low-voltage powerline carrier communication interface circuit can have
Effect ensures the transmission range and reliability of communication.
Description of the drawings
Fig. 1 is the overall structure frame of SCM Based low-voltage powerline carrier communication interface circuit in the utility model
Figure；
Fig. 2 is the connection figure of the microcontroller and carrier chip in the utility model；
Fig. 3 is the circuit diagram of the amplifying circuit in the utility model；
Fig. 4 is the circuit diagram of the termination power in the utility model；
Fig. 5 is the circuit diagram of the filter circuit in the utility model；
Fig. 6 is the circuit diagram of the signal processing module in the utility model.
Specific implementation mode
For the ease of the understanding of those skilled in the art, the utility model is made with reference to embodiment and attached drawing further
Explanation, the content that embodiment refers to not is restriction to the utility model.
In the description of the present invention, it should be understood that term "upper", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom", "inner", "outside" be orientation based on ... shown in the drawings or
Position relationship is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply the indicated device or member
Part must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise specified and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, can also be the company inside two elements
It is logical, it can be directly connected, can also indirectly connected through an intermediary, for the ordinary skill in the art, it can
To understand the concrete meaning of the term as the case may be.
As shown in Figure 1, a kind of SCM Based low-voltage powerline carrier communication interface circuit, including microcontroller, carrier wave
Chip and signal processing module, signal processing module include amplifying circuit, termination power and filter circuit, microcontroller and carrier wave
Carried out data transmission by synchronous communication mode between chip, the data sending terminal of carrier chip and the input terminal electricity of amplifying circuit
Connection, the output end of amplifying circuit are electrically connected with one end of termination power, and the other end of termination power is electrically connected with power line, filter
The input terminal of wave circuit is conllinear with the output end of amplifying circuit, the output end of filter circuit and the data receiver electricity of carrier chip
Connection；Wherein, microcontroller is used to control carrier chip and sends the data of PC machine and receive the data of power line；Carrier chip is used for
It sends the data of PC machine and receives the data of power line；Amplifying circuit is for the data-signal that carrier chip is sent to be amplified
Processing；Termination power and filter circuit are for eliminating the interference signal on power line to protect internal circuit.
The above embodiment provide SCM Based low-voltage powerline carrier communication interface circuit circuit structure with
And operation principle is very simple：The data of PC machine are sent under the control of microcontroller by carrier chip, by amplifying circuit into
Row power amplification is sent to power line using termination power, and the data of power line pass through termination power and filter circuit
It is sent to carrier chip after anti-interference, then receives and send to PC machine by carrier chip under the control of microcontroller, in addition, this reality
Carrier chip transceiving data can not only be controlled by applying the microcontroller in mode, and stability is good, and amplifying circuit can not only be to pending
The data sent are amplified processing, and fidelity is high, then have termination power, filter circuit that can not only be carried out to data to be received
Anti-interference process, and carrier signal loss is low, in conclusion a kind of this SCM Based low-voltage powerline carrier communication interface
Circuit can effectively ensure that the transmission range and reliability of communication.
Further, microcontroller uses AT89C52.
Further, carrier chip uses ST7538, in the low-voltage powerline carrier communication interface electricity of the above embodiment
Carried out data transmission by synchronous communication mode between Lu Zhong, AT89C52 and ST7538, the circuit of AT89C52 and ST7538
Connection relation is as shown in Fig. 2, the ports CLR/T of ST7538 are electrically connected with the ports P3.2 of AT89C52 for realizing synchronous communication
Clock synchronize；The ports BU of ST7538 are electrically connected with the ports P1.3 of AT89C52, the ports CD_PD of ST7538 and AT89C52
The ports P3.4 be electrically connected for realizing CSMA/CD communication protocols, and the port RXD, TXD, RxTx, REG_DATA of ST7538
The transmission for data is electrically connected with P1.7, P1.5, P1.6, P3.5 I/O port of microcontroller respectively.
Further, as shown in figure 3, the power amplification element of amplifying circuit uses NPN type triode and PNP type triode
Power amplification processing is carried out to signal to be sent, which is by diode VD1, diode VD2, diode VD3, two
Pole pipe VD4, triode VT1, triode VT2, triode VT3, triode VT4, inductance L1, capacitance C201, capacitance C202, capacitance
The two-stage complementation power amplifier of C203, resistance R201 and resistance R202 compositions, wherein triode VT1, VT4 are NPN type triode,
Triode VT2, VT3 are PNP type triode.
Further, as shown in figure 4, termination power includes the high-pass filtering electricity being made of coupling inductance T1 and capacitance C204
Road and the TVS pipe VD7 in parallel with the high-pass filtering circuit, wherein high-pass filtering circuit is for being isolated power line high voltage
Industrial-frequency alternating current, TVS pipe VD7 is for eliminating the interference on power line.
Preferably, as shown in figure 5, filter circuit includes capacitance C205, capacitance C206 and inductance L2, capacitance C205, capacitance
C206, inductance L2 compose in parallel filter circuit, in parallel with TVS pipe VD7 after filter circuit series resistance R203, filter circuit series connection
It is electrically connected with carrier chip after capacitance C207, which can effectively further eliminate the interference on power line.
It is highly preferred that as shown in figure 5, filter circuit further includes diode VD5 and diode VD6, diode VD5 and two poles
Pipe VD6 inversions compose in parallel clamp circuit, and clamp circuit is in parallel with filter circuit.
It needs to propose to illustrate, the circuit connecting relation of amplifying circuit, termination power and filter circuit is as shown in Figure 6.
Above-described embodiment is the preferable implementation of the utility model, and in addition to this, the utility model can be with other sides
Formula realizes that any obvious replacement is in the protection model of the utility model under the premise of not departing from the technical program design
Within enclosing.
In order to allow those of ordinary skill in the art more easily understand the improvement of the utility model compared with the existing technology it
Place, some attached drawings of the utility model and description have been simplified, and for the sake of clarity, present specification is omitted one
A little other elements, those of ordinary skill in the art should be aware that the element that these are omitted also may make up the interior of the utility model
Hold.
Claims (7)
1. a kind of SCM Based low-voltage powerline carrier communication interface circuit, it is characterised in that：Including microcontroller, carrier wave core
Piece and signal processing module, the signal processing module include amplifying circuit, termination power and filter circuit, the microcontroller
Carried out data transmission by synchronous communication mode between carrier chip, the data sending terminal and amplifying circuit of the carrier chip
Input terminal electrical connection, the output end of the amplifying circuit is electrically connected with one end of termination power, the termination power it is another
End be electrically connected with power line, the input terminal of the filter circuit is conllinear with the output end of amplifying circuit, the filter circuit it is defeated
Outlet is electrically connected with the data receiver of carrier chip；
The microcontroller is used to control carrier chip and sends the data of PC machine and receive the data of power line；
The carrier chip is used to send the data of PC machine and receives the data of power line；
The amplifying circuit is used to the data-signal that carrier chip is sent being amplified processing；
The termination power and filter circuit are for eliminating the interference signal on power line to protect internal circuit.
2. SCM Based low-voltage powerline carrier communication interface circuit according to claim 1, it is characterised in that：Institute
It states microcontroller and uses AT89C52.
3. SCM Based low-voltage powerline carrier communication interface circuit according to claim 2, it is characterised in that：Institute
It states carrier chip and uses ST7538.
4. SCM Based low-voltage powerline carrier communication interface circuit according to claim 3, it is characterised in that：Institute
The power amplification element for stating amplifying circuit uses NPN type triode and PNP type triode.
5. SCM Based low-voltage powerline carrier communication interface circuit according to claim 4, it is characterised in that：Institute
State termination power include by coupling inductance T1 and capacitance the C204 high-pass filtering circuit formed and with the high-pass filtering circuit simultaneously
The TVS pipe VD7 of connection.
6. SCM Based low-voltage powerline carrier communication interface circuit according to claim 5, it is characterised in that：Institute
It includes capacitance C205, capacitance C206 and inductance L2 to state filter circuit, and the capacitance C205, capacitance C206, inductance L2 are composed in parallel
Filter circuit, it is in parallel with TVS pipe VD7 after the filter circuit series resistance R203, after the filter circuit series capacitance C207
It is electrically connected with carrier chip.
7. SCM Based low-voltage powerline carrier communication interface circuit according to claim 6, it is characterised in that：Institute
It further includes that diode VD5 and diode VD6, the diode VD5 and diode VD6 inversions compose in parallel clamper to state filter circuit
Circuit, the clamp circuit are in parallel with filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820157128.2U CN207732759U (en) | 2018-01-30 | 2018-01-30 | A kind of SCM Based low-voltage powerline carrier communication interface circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820157128.2U CN207732759U (en) | 2018-01-30 | 2018-01-30 | A kind of SCM Based low-voltage powerline carrier communication interface circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207732759U true CN207732759U (en) | 2018-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820157128.2U Active CN207732759U (en) | 2018-01-30 | 2018-01-30 | A kind of SCM Based low-voltage powerline carrier communication interface circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113014291A (en) * | 2021-02-22 | 2021-06-22 | 深圳市先行电气技术有限公司 | Power line carrier communication module |
| CN115833963A (en) * | 2022-10-18 | 2023-03-21 | 广西电网有限责任公司钦州供电局 | Batch detection platform for communication modules of electric energy meters |
-
2018
- 2018-01-30 CN CN201820157128.2U patent/CN207732759U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113014291A (en) * | 2021-02-22 | 2021-06-22 | 深圳市先行电气技术有限公司 | Power line carrier communication module |
| CN115833963A (en) * | 2022-10-18 | 2023-03-21 | 广西电网有限责任公司钦州供电局 | Batch detection platform for communication modules of electric energy meters |
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