CN113206686A - Direct current power line carrier communication system circuit - Google Patents

Direct current power line carrier communication system circuit Download PDF

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Publication number
CN113206686A
CN113206686A CN202110605529.6A CN202110605529A CN113206686A CN 113206686 A CN113206686 A CN 113206686A CN 202110605529 A CN202110605529 A CN 202110605529A CN 113206686 A CN113206686 A CN 113206686A
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CN
China
Prior art keywords
circuit
direct current
signal
current power
power supply
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.)
Pending
Application number
CN202110605529.6A
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Chinese (zh)
Inventor
丁九良
孙异兴
于绍强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Xiezhen Electronics Co ltd
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Shenzhen Xiezhen Electronics Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen Xiezhen Electronics Co ltd filed Critical Shenzhen Xiezhen Electronics Co ltd
Priority to CN202110605529.6A priority Critical patent/CN113206686A/en
Publication of CN113206686A publication Critical patent/CN113206686A/en
Pending legal-status Critical Current

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    • 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
    • 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
    • H02J13/00007—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 the power network as support for the transmission
    • H02J13/00009—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 the power network as support for the transmission using pulsed signals
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • 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
    • 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
    • Y04S40/126—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 wireless data transmission

Abstract

The invention discloses a direct current power line carrier communication system circuit, which comprises a signal detection circuit, a control signal circuit, an EMI filter circuit and a direct current power supply, wherein the direct current power supply circuit consists of the signal detection circuit and the control signal circuit; the direct current electric appliance circuit consists of a signal detection circuit, a control signal circuit and an EMI filter circuit; the passing signal detection circuit and the control signal circuit are both provided with two groups. The direct current power line carrier communication system circuit is simple in wiring and low in material cost; the wireless signal transmission is stable in the occasion with metal shielding; and the direct current power supply circuit is used for transmitting signals, so that control lines are saved, and the cost is reduced.

Description

Direct current power line carrier communication system circuit
Technical Field
The invention relates to the technical field of communication system circuits, in particular to a direct current power line carrier communication system circuit.
Background
At present, most of electric appliances and clients have a data communication function, and the structure and the mode of most of communication systems are as follows:
1. wired communication-duplex communication, two communication wires are arranged between the client load and the switching power supply, so that wires are increased, the cost is increased, and the more the number of electric appliances is, the more complicated the electric appliances are.
2. The wireless communication device, the load of customer end connects the wireless transmitting device through the signal line, the switching power supply connects the wireless receiving device through the signal line, the wireless transmitting device and wireless receiving device realize the communication connection, the structure is costly, the wireless signal transmission is difficult in the occasion with metal shielding.
Disclosure of Invention
The invention aims to provide a direct current power line carrier communication system circuit to solve the problems that the cost is increased due to the fact that wires are added in the market at present, the more electric appliances are, the more complicated the electric appliances are, the structural cost is high, and wireless signals are difficult to transmit in the occasions with metal shielding.
In order to achieve the purpose, the invention provides the following technical scheme: a DC power line carrier communication system circuit comprises a signal detection circuit, a control signal circuit, an EMI filter circuit and a DC power supply,
the direct current power supply circuit is composed of a signal detection circuit and a control signal circuit;
the direct current electric appliance circuit consists of a signal detection circuit, a control signal circuit and an EMI filter circuit;
the passing signal detection circuit and the control signal circuit are both provided with two groups.
Preferably, the control signal circuit in the dc power supply circuit includes: the transformer T1, the resistor R1, the resistor R2, the resistor R3, the capacitor C1, the capacitor C2, the capacitor C3, the NPN type triode Q1, the NPN type triode Q2 and the inductance coil L1 are connected in series, the transformer T1 is connected with a direct-current power supply in series, and the resistor R3 is connected with the capacitor C3 in parallel.
Preferably, the signal detection circuit in the dc power supply circuit includes a resistor R4, a capacitor C4, an amplifying circuit, and a detector, the dc power supply is connected in parallel with the signal detection circuit, the circuit detects a high frequency signal on the dc power supply, amplifies the high frequency signal by the amplifying circuit, and sends the amplified high frequency signal to the detector, and the envelope of the high frequency signal is restored at the output end of the detector.
Preferably, the high frequency signal is a carrier signal, the envelope of which is the information we want to transmit, and when there is a high frequency signal, the detector outputs a high level, and when there is no high frequency signal, the detector outputs a low level, and the pulse widths of the high and low levels are predefined in the communication protocol, so that the signal can be transmitted by controlling the timing of transmitting the high frequency signal, and a high frequency period of the high frequency signal is much smaller than the predefined pulse widths of the high and low levels, so that when a high level pulse is transmitted, a series of high frequency signals is actually transmitted, and the duration of the series of high frequency signals is the high level pulse width.
Preferably, the EMI filter circuit in the dc electrical appliance circuit includes an inductor L3 and a capacitor C9, the inductor L3 is connected in series with the capacitor C9, and the EMI filter circuit is electrically connected to the signal detection circuit in the dc electrical appliance circuit.
Preferably, the signal detection circuit and the control signal circuit of the direct current electric appliance circuit have the same circuit structure principle as the signal detection circuit and the control signal circuit of the direct current electric appliance circuit.
Compared with the prior art, the invention has the beneficial effects that: the direct current power line carrier communication system circuit comprises:
1. the wiring is simple, and the material consumption cost is low;
2. the wireless signal transmission is stable in the occasion with metal shielding;
3. and the direct current power supply circuit is used for transmitting signals, so that control lines are saved, and the cost is reduced.
Drawings
FIG. 1 is a schematic circuit diagram of a DC power line carrier communication system according to the present invention;
FIG. 2 is a schematic diagram of a DC power supply circuit according to the present invention;
fig. 3 is a schematic diagram of a circuit of the dc electrical appliance of the present invention.
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.
Referring to fig. 1-3, the present invention provides a technical solution: a DC power line carrier communication system circuit comprises a signal detection circuit, a control signal circuit, an EMI filter circuit and a DC power supply,
the direct current power supply circuit is composed of a signal detection circuit and a control signal circuit;
the direct current electric appliance circuit consists of a signal detection circuit, a control signal circuit and an EMI filter circuit;
the passing signal detection circuit and the control signal circuit are both provided with two groups.
Further, the control signal circuit in the dc power supply circuit includes: the transformer T1, the resistor R1, the resistor R2, the resistor R3, the capacitor C1, the capacitor C2, the capacitor C3, the NPN type triode Q1, the NPN type triode Q2 and the inductance coil L1 are connected in series, the transformer T1 is connected with a direct-current power supply in series, and the resistor R3 is connected with the capacitor C3 in parallel.
Furthermore, the signal detection circuit in the direct current power supply circuit comprises a resistor R4, a capacitor C4, an amplifying circuit and a detector, the direct current power supply is connected with the signal detection circuit in parallel, the circuit detects a high-frequency signal on the direct current power supply, amplifies the high-frequency signal through the amplifying circuit and then sends the amplified high-frequency signal to the detector, and the envelope of the high-frequency signal is restored at the output end of the detector.
Further, the high frequency signal is a carrier signal, the envelope of the carrier signal is information which is to be transmitted, when the high frequency signal exists, the detector outputs a high level, when the high frequency signal does not exist, the detector outputs a low level, the pulse width of the high level and the low level is predefined in the communication protocol, so that the signal can be transmitted by controlling the time sequence of transmitting the high frequency signal, a high frequency period of the high frequency signal is far less than the predefined pulse width of the high level and the low level, therefore, when the high level pulse is transmitted, a series of high frequency signals are actually transmitted, and the duration of the series of high frequency signals is the high level pulse width.
A transformer T1 is inserted in series at the output end of the DC power supply to couple the control signal to the power line through a transformer T1; a transformer T2 is inserted into the input end of the DC electric appliance, the control type is coupled to the power line through a transformer T2, a voltage signal detection circuit is connected in parallel to the power line, and the control signal is taken out, so that communication is realized.
The control line of the wired communication is prevented from being complicated in wiring and high in cost and the cost of the wireless communication device is avoided, the direct current power supply line is used for transmitting signals, the control line is saved, and the cost is reduced.
Further, the EMI filter circuit in the dc electrical appliance circuit includes an inductor L3 and a capacitor C9, the inductor L3 is connected in series with the capacitor C9, and the EMI filter circuit is electrically connected to the signal detection circuit in the dc electrical appliance circuit.
Furthermore, the signal detection circuit and the control signal circuit of the direct current electric appliance circuit have the same circuit structure principle as the signal detection circuit and the control signal circuit of the direct current electric appliance circuit.
The working principle is as follows: when the direct current power line carrier communication system circuit is used, a direct current power supply source provides direct current voltage for a plurality of direct current electric appliances, and the direct current power supply line is used for transmitting control signals.
Structure of the dc power supply:
the direct current power supply can be an AC/DC direct current power supply or a DC/DC direct current power supply, and can also be direct current generated by other batteries or solar panels. A transformer T1 is connected in series with the output end of the DC power supply, the transformer T1 is used for coupling the control signal to the DC power supply circuit, and a high-frequency signal is superposed on the DC power supply voltage by using the voltage conversion function of the transformer T1, the amplitude of the high-frequency signal is not very large, the high-frequency signal cannot cause adverse effect or electromagnetic interference on the work of the DC electric appliance, and the detection circuit can reliably detect the signal. Meanwhile, a voltage detection circuit is connected in parallel with the output end of the direct current power supply, the circuit detects a high-frequency signal on the direct current power supply line, amplifies the high-frequency signal and then sends the amplified high-frequency signal to a detector, and the envelope of the high-frequency signal is restored at the output end of the detector. The high-frequency signal is a carrier signal, the envelope of the carrier signal is information to be transmitted, when the high-frequency signal exists, the detector outputs high level, and when the high-frequency signal does not exist, the detector outputs low level. The pulse widths of high and low levels are predefined in the communication protocol, so that signals can be transmitted by controlling the timing of transmitting high frequency signals. A high frequency period of the high frequency signal is much shorter than the predefined high and low level pulse widths, so that when a high level pulse is transmitted, a series of high frequency signals is actually transmitted, and the duration of the series of high frequency signals is the high level pulse width.
The structure of the direct current electric appliance is as follows:
the direct current electric appliance can be an LED driving power supply or various sensors, and can also be other electric devices such as an intelligent switch and the like. The input end of the direct current electric appliance is connected with a transformer in series, and the function of the transformer is the same as that of the transformer in the direct current power supply. Meanwhile, a voltage detection circuit is connected in parallel with the input end of the direct current electric appliance, and the function of the voltage detection circuit is the same as that of the voltage detection circuit in the direct current power supply.
In summary, a transformer T1 is inserted in series at the output terminal of the dc power supply to couple the control signal to the power line through a transformer T1; a transformer T2 is inserted into the input end of the DC electric appliance, the control type is coupled to the power line through a transformer T2, a voltage signal detection circuit is connected in parallel to the power line, and the control signal is taken out, so that communication is realized.
Those not described in detail in this specification are within the skill of the art.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims (6)

1. A kind of direct current power line carrier communication system circuit, including signal detection circuit, control signal circuit, EMI filter circuit and direct current power, characterized by that:
the direct current power supply circuit is composed of a signal detection circuit and a control signal circuit;
the direct current electric appliance circuit consists of a signal detection circuit, a control signal circuit and an EMI filter circuit;
the passing signal detection circuit and the control signal circuit are both provided with two groups.
2. The circuit of claim 1, wherein: the control signal circuit in the direct current power supply circuit includes: the transformer T1, the resistor R1, the resistor R2, the resistor R3, the capacitor C1, the capacitor C2, the capacitor C3, the NPN type triode Q1, the NPN type triode Q2 and the inductance coil L1 are connected in series, the transformer T1 is connected with a direct-current power supply in series, and the resistor R3 is connected with the capacitor C3 in parallel.
3. The circuit of claim 1, wherein: the signal detection circuit in the direct current power supply circuit comprises a resistor R4, a capacitor C4, an amplifying circuit and a detector, wherein the direct current power supply is connected with the signal detection circuit in parallel, the circuit detects a high-frequency signal on the direct current power supply, amplifies the high-frequency signal through the amplifying circuit and then sends the amplified high-frequency signal to the detector, and the envelope of the high-frequency signal is restored at the output end of the detector.
4. The direct current power line carrier communication system circuit according to claim 3, wherein: the high-frequency signal is a carrier signal, the envelope of the high-frequency signal is information to be transmitted, when the high-frequency signal exists, the detector outputs high level, when the high-frequency signal does not exist, the detector outputs low level, the pulse widths of the high level and the low level are predefined in a communication protocol, so that the signal can be transmitted by controlling the time sequence for transmitting the high-frequency signal, one high-frequency period of the high-frequency signal is far smaller than the predefined pulse widths of the high level and the low level, therefore, when a high-level pulse is transmitted, a string of high-frequency signals are actually transmitted, and the duration of the string of high-frequency signals is the high-level pulse width.
5. The circuit of claim 1, wherein: the EMI filter circuit in the direct current electric appliance circuit comprises an inductance coil L3 and a capacitor C9, the inductance coil L3 is connected with the capacitor C9 in series, and the EMI filter circuit is electrically connected with the signal detection circuit in the direct current electric appliance circuit.
6. The circuit of claim 1, wherein: the signal detection circuit and the control signal circuit of the direct current electric appliance circuit have the same circuit structure principle as the signal detection circuit and the control signal circuit of the direct current electric appliance circuit.
CN202110605529.6A 2021-05-31 2021-05-31 Direct current power line carrier communication system circuit Pending CN113206686A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110605529.6A CN113206686A (en) 2021-05-31 2021-05-31 Direct current power line carrier communication system circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110605529.6A CN113206686A (en) 2021-05-31 2021-05-31 Direct current power line carrier communication system circuit

Publications (1)

Publication Number Publication Date
CN113206686A true CN113206686A (en) 2021-08-03

Family

ID=77023804

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110605529.6A Pending CN113206686A (en) 2021-05-31 2021-05-31 Direct current power line carrier communication system circuit

Country Status (1)

Country Link
CN (1) CN113206686A (en)

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