CN111600391A - RS-485-based direct-current power line communication device - Google Patents
RS-485-based direct-current power line communication device Download PDFInfo
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- CN111600391A CN111600391A CN202010548457.1A CN202010548457A CN111600391A CN 111600391 A CN111600391 A CN 111600391A CN 202010548457 A CN202010548457 A CN 202010548457A CN 111600391 A CN111600391 A CN 111600391A
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- 238000004891 communication Methods 0.000 title claims abstract description 70
- 230000008878 coupling Effects 0.000 claims abstract description 21
- 238000010168 coupling process Methods 0.000 claims abstract description 21
- 238000005859 coupling reaction Methods 0.000 claims abstract description 21
- 239000003990 capacitor Substances 0.000 claims description 12
- 238000013461 design Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/01—Arrangements for reducing harmonics or ripples
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The invention discloses a direct current power line communication device based on RS-485, which comprises a control circuit, wherein the control circuit outputs a control signal; the communication circuit receives the control signal output by the control circuit and converts the control signal into a communication signal to be output; a coupling circuit connected to the communication circuit; and the coupling circuit couples the communication signal with the direct current of the power circuit and outputs the coupled communication signal through a power line.
Description
Technical Field
The invention relates to the technical field of industrial network communication, in particular to a direct-current power line communication device based on RS-485.
Background
In the field of industrial control, a motor is used as an execution component and widely applied to various automatic devices, and in the field of small-sized control motors, such as a stepping motor and a direct current brushless motor, the motor can communicate with peripheral devices through various buses, such as: CANBus, Modbus, Profibus, Profinet, Ethercat, and the like.
In the field of motor control, a development trend is that a motor and a drive control are integrated, so that the integration level is improved, and the size of the whole electric control system is reduced.
The communication bus is a key component of motor control. Existing systems rely on proprietary bus solutions that have worked well for many years. However, as new functionality is added, the increasing complexity market requires the use of standard interfaces, such as CAN and RS-485, that CAN provide more throughput and interface with other networks; RS-485 is one of industrial buses, has wide application in the field of automation control, and many protocol developments are based on RS-485 physical layers, such as modbus, Profibus and the like.
Further, there is also a need for a wired solution that can simplify installation and reduce wiring costs.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a direct current power line communication device based on RS-485, which solves the problem that a bus control device power supply can not be simultaneously and uniformly controlled when communicating with a bus.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: an RS-485 based direct current power line communication device, comprising:
a control circuit that outputs a control signal;
the communication circuit receives the control signal output by the control circuit and converts the control signal into a communication signal to be output;
a coupling circuit connected to the communication circuit;
and the coupling circuit couples the communication signal with the direct current of the power circuit and outputs the coupled communication signal through a power line.
Preferably, the direct current power line communication device further comprises;
the internal power supply provides working voltage for the control circuit and the communication circuit;
a first filter circuit connected to the internal power supply and mixing a voltage of the internal power supply with a voltage of a power supply circuit.
Preferably, the first filter circuit is a circuit composed of a capacitor C4, an inductor L4 and an inductor L3.
Preferably, the communication circuit is an RS485 communication chip.
Preferably, the coupling circuit comprises a circuit consisting of a first resistor R1, a first capacitor C3 and a second capacitor C2.
Preferably, the power supply circuit includes,
a first power supply that provides carrier energy for a communication signal;
the second filter circuit comprises a circuit consisting of a capacitor C1, an inductor L1 and an inductor L2; the first power supply is connected with the coupling circuit through a second filter circuit.
Preferably, the control circuit is set as an MCU.
(III) advantageous effects
The invention provides a direct current power line communication device based on RS-485, which has the following beneficial effects:
(1) the invention couples the communication signal and the voltage of the power circuit into a carrier signal by a circuit consisting of a control circuit, a communication circuit, a coupling circuit and the power circuit; the design of the circuit is simple, and the problem of coupling transmission of the RS-485 communication signal and a power supply is solved; the design of the invention can also reduce the trouble of wiring in the transmission process of the communication signals, and the communication signals are combined by a plurality of circuits of the invention to solve the problem of long-distance transmission;
(2) the invention is also provided with an internal power supply which can not only provide voltage for the circuit internal circuit, but also provide voltage in the communication signal transmission process; in addition, the invention is also provided with a first filter circuit and a second filter circuit to solve the interference problem of communication and power supply signals.
Drawings
FIG. 1 is a schematic circuit diagram of the present invention;
FIG. 2 is a schematic circuit diagram of the connection of the present invention to a master station.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, the present invention provides a technical solution: an RS-485 based direct current power line communication device, comprising:
a control circuit that outputs a control signal; the input of the control circuit is connected with the master station PLC through RS232, RS485, CAN or Ethernet.
A communication circuit: the communication circuit receives the control signal output by the control circuit and converts the control signal into a communication signal to be output;
a coupling circuit connected to the communication circuit;
the power supply circuit is connected with the coupling circuit, the coupling circuit couples the communication signal with the direct current of the power supply circuit and outputs the coupled communication signal through a power line; the power lines are A1_ BUS and B1_ BUS.
The direct current power line communication device also comprises;
the internal power supply is a control circuit and a communication circuit and generates various voltages VCC required by control or working voltages provided by a battery for the control circuit and the communication circuit; the design is designed to ensure the internal power supply requirements of the control circuit and the communication circuit, and also can ensure the transmission of communication signals in a short time under the condition that the power supply circuit is not electrified.
A first filter circuit connected to the internal power supply and mixing a voltage of the internal power supply with a voltage of a power supply circuit; the design can ensure that the power supply circuit can not generate interference signals, and the stability of the power supply voltage is ensured.
The first filter circuit is a circuit consisting of a capacitor C4, an inductor L4 and an inductor L3; the design can ensure that the power supply circuit can not generate interference signals, and the stability of the power supply voltage is ensured.
The communication circuit is an RS485 communication chip; the design is convenient for signal coupling with the coupling circuit and the power supply.
The coupling circuit comprises a circuit consisting of a first resistor R1, a first capacitor C3 and a second capacitor C2; the circuit designed in this way is simple and practical.
The power supply circuit comprises a power supply circuit which comprises,
a first power supply that provides carrier energy for a communication signal;
the second filter circuit comprises a circuit consisting of a capacitor C1, an inductor L1 and an inductor L2; the first power supply is connected with the coupling circuit through a second filter circuit.
The control circuit is set as an MCU.
Example (b):
(1) the invention couples the communication signal and the voltage of the power circuit into a carrier signal by a circuit consisting of a control circuit, a communication circuit, a coupling circuit and the power circuit; the design of the circuit is simple, and the problem of coupling transmission of the RS-485 communication signal and a power supply is solved; the design of the invention can also reduce the trouble of wiring in the transmission process of the communication signals, and the communication signals are combined by a plurality of circuits of the invention to solve the problem of long-distance transmission;
(2) the invention is also provided with an internal power supply which can not only provide voltage for the circuit internal circuit, but also provide voltage in the communication signal transmission process; in addition, the invention is also provided with a first filter circuit and a second filter circuit to solve the interference problem of communication and power supply signals.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a direct current power line communication device based on RS-485 which characterized in that: comprises that
A control circuit that outputs a control signal;
the communication circuit receives the control signal output by the control circuit and converts the control signal into a communication signal to be output;
a coupling circuit connected to the communication circuit;
and the coupling circuit couples the communication signal with the direct current of the power circuit and outputs the coupled communication signal through a power line.
2. The RS-485 based direct current power line communication device of claim 1, wherein: the direct current power line communication device also comprises;
the internal power supply provides working voltage for the control circuit and the communication circuit;
a first filter circuit connected to the internal power supply and mixing a voltage of the internal power supply with a voltage of a power supply circuit.
3. The RS-485 based direct current power line communication device of claim 2, wherein: the first filter circuit is a circuit consisting of a capacitor C4, an inductor L4 and an inductor L3.
4. The RS-485 based direct current power line communication device of claim 2, wherein: the communication circuit is an RS485 communication chip.
5. The RS-485 based direct current power line communication device of claim 1, wherein: the coupling circuit comprises a circuit consisting of a first resistor R1, a first capacitor C3 and a second capacitor C2.
6. The RS-485 based direct current power line communication device of claim 1, wherein: the power supply circuit comprises a power supply circuit which comprises,
a first power supply that provides carrier energy for a communication signal;
the second filter circuit comprises a circuit consisting of a capacitor C1, an inductor L1 and an inductor L2; the first power supply is connected with the coupling circuit through a second filter circuit.
7. The RS-485 based direct current power line communication device of claim 1, wherein: the control circuit is set as an MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010548457.1A CN111600391A (en) | 2020-06-16 | 2020-06-16 | RS-485-based direct-current power line communication device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010548457.1A CN111600391A (en) | 2020-06-16 | 2020-06-16 | RS-485-based direct-current power line communication device |
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| CN111600391A true CN111600391A (en) | 2020-08-28 |
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| CN202010548457.1A Pending CN111600391A (en) | 2020-06-16 | 2020-06-16 | RS-485-based direct-current power line communication device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115459809A (en) * | 2021-06-08 | 2022-12-09 | 江苏锂宁电子科技有限公司 | BMS carrier communication circuit and use method thereof |
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| US20060202640A1 (en) * | 2006-06-05 | 2006-09-14 | Alexandrov Felix I | Arrangement and method for providing power line communication from an AC power source to a circuit for powering a load, and electronic ballasts therefor |
| CN103036593A (en) * | 2012-12-30 | 2013-04-10 | 青岛东软载波科技股份有限公司 | Low-voltage power line carrier communication circuit |
| CN204761161U (en) * | 2015-06-10 | 2015-11-11 | 国网四川省电力公司宜宾供电公司 | Adopt expanded carrier technique's district intelligent management system |
| CN108199747A (en) * | 2018-01-04 | 2018-06-22 | 哈尔滨理工大学 | A kind of direct current photovoltaic power carrier wave communication device |
| CN212162930U (en) * | 2020-06-16 | 2020-12-15 | 深圳锐特机电技术有限公司 | RS-485-based direct-current power line communication device |
-
2020
- 2020-06-16 CN CN202010548457.1A patent/CN111600391A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060202640A1 (en) * | 2006-06-05 | 2006-09-14 | Alexandrov Felix I | Arrangement and method for providing power line communication from an AC power source to a circuit for powering a load, and electronic ballasts therefor |
| CN103036593A (en) * | 2012-12-30 | 2013-04-10 | 青岛东软载波科技股份有限公司 | Low-voltage power line carrier communication circuit |
| CN204761161U (en) * | 2015-06-10 | 2015-11-11 | 国网四川省电力公司宜宾供电公司 | Adopt expanded carrier technique's district intelligent management system |
| CN108199747A (en) * | 2018-01-04 | 2018-06-22 | 哈尔滨理工大学 | A kind of direct current photovoltaic power carrier wave communication device |
| CN212162930U (en) * | 2020-06-16 | 2020-12-15 | 深圳锐特机电技术有限公司 | RS-485-based direct-current power line communication device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115459809A (en) * | 2021-06-08 | 2022-12-09 | 江苏锂宁电子科技有限公司 | BMS carrier communication circuit and use method thereof |
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