CN113014291A - Power line carrier communication module - Google Patents
Power line carrier communication module Download PDFInfo
- Publication number
- CN113014291A CN113014291A CN202110206653.5A CN202110206653A CN113014291A CN 113014291 A CN113014291 A CN 113014291A CN 202110206653 A CN202110206653 A CN 202110206653A CN 113014291 A CN113014291 A CN 113014291A
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- 238000004891 communication Methods 0.000 title claims abstract description 87
- 230000010365 information processing Effects 0.000 claims abstract description 8
- 230000008878 coupling Effects 0.000 claims description 24
- 238000010168 coupling process Methods 0.000 claims description 24
- 238000005859 coupling reaction Methods 0.000 claims description 24
- 239000003990 capacitor Substances 0.000 claims description 15
- 238000007493 shaping process Methods 0.000 claims description 11
- 230000008054 signal transmission Effects 0.000 claims 2
- 238000001914 filtration Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000003321 amplification Effects 0.000 description 11
- 238000003199 nucleic acid amplification method Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
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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
- H04B3/544—Setting up communications; Call and signalling arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Dc Digital Transmission (AREA)
Abstract
The invention discloses a power carrier communication module, which comprises a signal sending device, a main signal processing device, a power supply module, a low-voltage power line, a slave information processing device and a signal receiving device, wherein the signal sending device is used for sending a signal of a control circuit and sending a control signal to the signal sending device, the main signal processor is used for modulating, filtering, amplifying, encrypting and the like the sent signal, the low-voltage power line is used for transmitting the signal, the power supply module is used for providing different power supplies, the slave signal processing device is used for demodulating, filtering, amplifying, decrypting and the like the received signal, the information receiving device is used for receiving the information and controlling the operation of the device, the power carrier communication module can realize reliable communication under the environment with wide frequency band noise by further processing the digital signal by adopting a plurality of anti-interference and FSK modulation and demodulation technologies, and the system has a signal encryption function, so that the safety of the digital signal is improved.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a power line carrier communication module.
Background
The PLC is a Communication technology that uses an existing Power Line, which is almost ubiquitous, as a Communication carrier, and adds some PLC local terminals and terminal modems, so as to change an original Power network into a Power Line Communication network and change an original Power socket into an information socket.
Along with in the development process of building and house intellectuality, utilize current Power Line (PL) to carry out information transmission, realize the transmission of information, need not extra communication cable, can practice thrift manpower greatly, material resources and financial resources, therefore, power line communication has fine development prospect and using value, but at present, the basic modulation mode of traditional low pressure power line carrier divide into amplitude keying, frequency keying and phase keying, the load condition of power line is complicated in addition, the interference signal spectral width of low pressure power line, signal attenuation is big, interference killing feature is poor, the time variation is big, and when utilizing the power line to carry out data transmission, the safety of data faces danger equally, easily by the invasion of third party.
Disclosure of Invention
The present invention is directed to a power carrier communication module to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a power carrier communication module comprises a signal sending device, a master signal processing device, a power module, a low-voltage power line, a slave information processing device and a signal receiving device, wherein the signal sending device is used for sending a signal of a control circuit, when a user needs to control the slave information processing device, the control signal is sent to the signal sending device, the master signal processor is used for modulating, filtering, amplifying, encrypting and the like the sent signal and sending the processed signal, the low-voltage power line is used for transmitting the signal, the power module is used for providing different power sources, the slave signal processing device is used for demodulating, filtering, amplifying, decrypting and the like the received signal and receiving the processed signal, the information receiving device is used for receiving the information and controlling the operation of the device, the signal sending device is connected with the low-voltage power line through the master signal processing device, and the signal receiving device is connected with the low-voltage power line through, the power module is connected with the low-voltage power line.
As a further technical scheme of the invention: the signal sending equipment comprises GS short messages, an embedded gateway and the Internet, the main signal processing and sending equipment comprises a main communication interface, a main power carrier communication module, a main power line interface and a signal encryption module, the slave signal processing receiving device comprises a slave power line interface, a signal decryption module, a slave power carrier communication module, a slave communication interface, the Internet and GSM short messages are connected with the embedded gateway, the embedded gateway is connected with the main power carrier communication module through the main communication interface, the signal output end of the main power carrier communication module is connected with the mutual power line interface and the signal encryption module, the main power line interface is connected with the low-voltage power line, the other end of the low-voltage power line is connected with the signal decryption module and the slave power carrier communication module through the slave power line interface, and the output end of the slave power carrier communication module is connected with the signal receiving equipment through the slave communication interface.
As a further technical scheme of the invention: the main power line interface and signal encryption module comprises a signal coupling circuit, a power amplification circuit, a shaping filter circuit, a signal receiving circuit, a signal encryption circuit and a main power carrier communication module, wherein the signal coupling circuit is connected with the low-voltage power line, the signal output end of the signal coupling circuit is connected with the main power carrier communication module through an interface signal circuit, the main power carrier communication module is connected with the shaping filter amplification circuit through the power amplification circuit, the output end of the shaping filter amplification circuit is connected with the signal receiving end of the signal coupling circuit, and the signal encryption circuit is connected with the main power carrier communication module.
As a further technical scheme of the invention: the signal encryption circuit comprises a data receiving unit, an encryption unit, a data combination unit and a key acquisition unit, wherein the data receiving unit connects a received data signal with the key generation unit through the encryption unit, the data receiving unit is used for segmenting a digital signal to be encrypted to form a segmented digital signal, and the encryption unit encrypts the segmented digital signal by using an encryption algorithm and the key generation unit.
As a further technical scheme of the invention: the power amplifying circuit comprises a power amplifier which is composed of triodes N1-N2 and P1-P2, the base of a triode P1 is connected with the anode of a zener diode D1 and a resistor R1, the base of a triode N1 is connected with the cathode of a diode D2 and the cathode of a zener diode D2, the other end of the resistor R2 is connected with a carrier signal output and a capacitor C2 through a capacitor C2, the anode of the diode D2 is connected with the other end of the capacitor C2 through a resistor R2, the emitter of the triode P2 is connected with the cathode of the zener diode D2, the voltage of +5V, the collector of the triode N2 and the cathode of the diode D2, the base of the triode N2 is connected with the base of the triode P2, the collector of the triode P2 and the collector of the triode N2, the emitter of the triode N2 is connected with the collector of the triode P2, the anode of the zener diode D2, the resistor R2, the other end of the resistor R4 is connected with the ground end, the emitter of the triode P2 is connected with the emitter of the triode N2, the capacitor C3, the anode of the diode D4 and the cathode of the diode D5, and the other end of the capacitor C3 is connected with the signal coupling circuit through the inductor L1.
As a further technical scheme of the invention: and the main power carrier communication module and the slave power carrier communication module adopt ST7538 power carrier chips.
As a further technical scheme of the invention: and the master communication interface and the slave communication interface adopt RS232 serial communication interfaces.
As a further technical scheme of the invention: the signal coupling circuit adopts the original and secondary side turn ratio as 10: 15, and a coupling coil.
Compared with the prior art, the invention has the beneficial effects that: the power carrier communication module of the invention adopts various anti-interference and FSK modulation and demodulation technologies through further processing the digital signals, so that the signals can realize reliable communication in the environment with wide noise frequency band, and the power carrier communication module has a signal encryption function, thereby increasing the safety of the digital signals.
Drawings
FIG. 1 is a schematic block diagram of an embodiment of the present invention.
Fig. 2 is a schematic block diagram of the main power line interface and signal encryption of an embodiment of the present invention.
FIG. 3 is a block diagram of an embodiment of the present invention.
Fig. 4 is a power amplification circuit diagram of the main power carrier communication module.
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.
Example 1: referring to fig. 1, a power carrier communication module includes a signal sending device, a master signal processing device, a low voltage power line, a power module, a slave information processing device, and a signal receiving device, wherein the signal sending device is configured to send a signal of a control circuit, and send a control signal to the signal sending device when a user needs to control the slave information processing device, the master signal processor is configured to perform processing such as modulation, filtering amplification, encryption, and the like on the sent signal and send the processed signal, the low voltage power line is configured to transmit the signal, the power module is configured to provide different power sources, the slave signal processing device is configured to perform processing such as demodulation, filtering amplification, decryption, and the like on the received signal, the information receiving device is configured to receive the information and control the operation of the device, and the signal sending device is connected to the low voltage power line through the master signal processing, the signal receiving equipment is connected with a low-voltage power line through the slave information processing equipment, the power supply module is connected with the low-voltage power line, the signal sending equipment comprises a GS short message, an embedded gateway and the Internet, the master signal processing and sending equipment comprises a master communication interface, a master power carrier communication module, a master power line interface and a signal encryption module, the slave signal processing and receiving equipment comprises a slave power line interface, a signal decryption module, a slave power carrier communication module and a slave communication interface, the Internet and the GSM short message are connected with the embedded gateway, the embedded gateway is connected with the master power carrier communication module through the master communication interface, the signal output end of the master power carrier communication module is connected with the mutual power line interface and the signal encryption module, the master power line interface is connected with the low-voltage power line, and the other end of the low-voltage power line is connected with, the output end of the slave power line carrier communication module is connected with a signal receiving device through a slave communication interface, the GSM short message and the Internet are used for a user to carry out system control on short message messages or an Internet browser, the master communication interface and the slave communication interface are used for enabling different devices to be conveniently connected to carry out communication, the master power line carrier communication module and the slave power line carrier communication module are used for transmitting carrier signals, the master power line interface and the slave power line interface are used for transmitting and receiving signals and are also provided with a coupling circuit, a filtering amplification system and a power amplification circuit, the signal encryption module is used for encrypting digital signals, and the signal decryption module is used for decrypting the digital signals.
Example 2: on the basis of embodiment 1, please refer to fig. 2, the main power line interface and the signal encryption module include a signal coupling circuit, a power amplifying circuit, a shaping filter circuit, a signal receiving circuit, a signal encryption circuit, and a main power carrier communication module, the signal coupling circuit is connected to the low-voltage power line, a signal output end of the signal coupling circuit is connected to the main power carrier communication module through an interface signal circuit, the main power carrier communication module is connected to the shaping filter amplifying circuit through the power amplifying circuit, an output end of the shaping filter amplifying circuit is connected to a signal receiving end of the signal coupling circuit, the signal encryption circuit is connected to the main power carrier communication module, the signal coupling circuit is used for coupling a signal transmitted to the power line and coupling a signal received from the power line to the communication interface, the power amplifying circuit is used for outputting high power to obtain long-distance communication, the shaping filter circuit is used for improving the sensitivity of receiving and transmitting the carrier wave, and the signal encryption circuit is used for encrypting the digital signal.
Example 3: on the basis of embodiment 2, please refer to fig. 3, the signal encryption circuit includes a data receiving unit, an encryption unit, a data combination unit and a key obtaining unit, the data receiving unit connects the received data signal with the key generating unit through the encryption unit, the data receiving unit is configured to segment the digital signal to be encrypted to form a segmented digital signal, and the encryption unit encrypts the segmented digital signal by using an encryption algorithm and the key generating unit.
Example 4: based on embodiment 3, referring to fig. 4, the power amplifier circuit comprises a power amplifier formed by transistors N1-N2 and P1-P2, a base of a transistor P1 connected to an anode of a zener diode D1 and a resistor R1, a base of a transistor N1 connected to a cathode of a diode D2 and a cathode of a zener diode D2, the other end of the resistor R2 connected to a carrier signal output and a capacitor C2 through a capacitor C2, an anode of the diode D2 connected to the other end of the capacitor C2 through a resistor R2, an emitter of the transistor P2 connected to a cathode of the zener diode D2, +5V, a collector of the transistor N2 and a cathode of the diode D2, a base of the transistor N2 connected to the base of the transistor P2, a collector of the transistor P2 and a collector of the transistor N2, an emitter of the transistor N2 connected to a collector of the transistor P2, an anode of the zener diode D2, the resistor R2, the diode R2, the anode of the diode D36, the other end of the resistor R4 is connected with the ground end, the emitter of the triode P2 is connected with the emitter of the triode N2, the capacitor C3, the anode of the diode D4 and the cathode of the diode D5, and the other end of the capacitor C3 is connected with the signal coupling circuit through the inductor L1.
The working principle of the invention is as follows: the power carrier communication module adopts a wireless cable connection mode, can be directly connected with a client through a GSM short message or Internet and controls master and slave equipment, when a control system is required to work, a signal is sent to the system through a user terminal, the signal is transmitted to an ST7538 power carrier chip from an RS232 serial interface through an embedded gateway and transmits carrier data to a low-voltage power line, the signal is modulated through an FSK modulator in the ST7538 power carrier chip, the modulated signal is converted through D/A, meanwhile, a segmented digital signal is encrypted through a signal encryption circuit by utilizing an encryption algorithm and a key generation unit, the signal is processed and coupled to the low-voltage power line through a power amplification circuit, a shaping filtering amplification circuit and a signal coupling circuit, the data signal is transmitted to slave signal processing receiving equipment through the low-voltage power line, and the signal enters the ST7538 power carrier chip through an analog input pin of the ST7538 power carrier chip, the signals are sent to a self-gain amplifier through a band-pass filter for signal processing, the original segmented digital signals are decrypted through a decryption algorithm corresponding to the encryption algorithm, the signals are demodulated through an FSK demodulator in an ST7538 power carrier chip, the signals are converted into serial digital signals through filtering, amplifying and phase locking, the serial digital signals are output to signal receiving equipment to start corresponding functions, and when a system needs a longer communication distance, a transmitting end is required to output larger power through a power amplifier.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides a power line carrier communication module, includes signal transmission equipment, main signal processing equipment, power module, low pressure power line, follows information processing equipment, signal reception equipment, its characterized in that, signal transmission equipment passes through main signal processing equipment and is connected with the low pressure power line, and signal reception equipment is connected with the low pressure power line through following information processing equipment, and power module connects the low pressure power line.
2. The power carrier communication module of claim 1, wherein the signal sending device comprises a GS short message, an embedded gateway, and the Internet, the master signal processing and sending device comprises a master communication interface, a master power carrier communication module, a master power line interface, and a signal encryption module, the slave signal processing and receiving device comprises a slave power line interface, a signal decryption module, a slave power carrier communication module, a slave communication interface, and the Internet and GSM short messages are connected to the embedded gateway, the embedded gateway is connected to the master power carrier communication module through the master communication interface, the signal output end of the master power carrier communication module is connected to the mutual power line interface and the signal encryption module, the master power line interface is connected to the low voltage power line, the other end of the low voltage power line is connected to the signal decryption module and the slave power carrier communication module through the slave power line interface, the output end of the power carrier communication module is connected with the signal receiving equipment through the slave communication interface.
3. The power carrier communication module of claim 2, wherein the main power line interface and the signal encryption module comprise a signal coupling circuit, a power amplifier circuit, a shaping filter circuit, a signal receiving circuit, a signal encryption circuit, and a main power carrier communication module, the signal coupling circuit is connected to the low voltage power line, a signal output terminal of the signal coupling circuit is connected to the main power carrier communication module through an interface signal circuit, the main power carrier communication module is connected to the shaping filter amplifier circuit through a power amplifier circuit, an output terminal of the shaping filter amplifier circuit is connected to a signal receiving terminal of the signal coupling circuit, and the signal encryption circuit is connected to the main power carrier communication module.
4. The power line carrier communication module according to claim 3, wherein the signal encryption circuit comprises a data receiving unit, an encryption unit, a data combining unit and a key obtaining unit, the data receiving unit connects the received data signal with the key generating unit through the encryption unit, the data receiving unit is configured to segment the digital signal to be encrypted to form a segmented digital signal, and the encryption unit encrypts the segmented digital signal by using an encryption algorithm and the key generating unit.
5. The power carrier communication module of claim 4, wherein the power amplifier circuit comprises a power amplifier formed by transistors N1-N2 and P1-P2, wherein the base of transistor P1 is connected to the anode of zener diode D1 and resistor R1, the base of transistor N1 is connected to the cathode of diode D2 and the cathode of zener diode D2, the other end of resistor R1 is connected to the carrier signal output and capacitor C2 through capacitor C1, the anode of diode D2 is connected to the other end of capacitor C2 through resistor R2, the emitter of transistor P1 is connected to the cathode of zener diode D1, +5V, the collector of transistor N2 and the cathode of diode D4, the base of transistor N2 is connected to the base of transistor P2, the collector of transistor P1 and the collector of transistor N1, the emitter of transistor N1 is connected to the collector of transistor P1, the anode of zener diode D3, and the collector of transistor P1, The circuit comprises a resistor R4, an anode of a diode D5 and a collector of a triode P2, the other end of the resistor R4 is connected with the ground, an emitter of the triode P2 is connected with an emitter of a triode N2, a capacitor C3, an anode of a diode D4 and a cathode of the diode D5, and the other end of a capacitor C3 is connected with a signal coupling circuit through an inductor L1.
6. The power carrier communication module of claim 5, wherein the master power carrier communication module and the slave power carrier communication module are selected from ST7538 power carrier chips.
7. The power line carrier communication module of claim 2, wherein the master communication interface and the slave communication interface are RS232 serial communication interfaces.
8. A power carrier communication module as claimed in claim 2, wherein the signal coupling circuit uses a primary to secondary turn ratio of 10: 15, and a coupling coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110206653.5A CN113014291A (en) | 2021-02-22 | 2021-02-22 | Power line carrier communication module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110206653.5A CN113014291A (en) | 2021-02-22 | 2021-02-22 | Power line carrier communication module |
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| CN113014291A true CN113014291A (en) | 2021-06-22 |
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| CN202110206653.5A Pending CN113014291A (en) | 2021-02-22 | 2021-02-22 | Power line carrier communication module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115001535A (en) * | 2022-05-27 | 2022-09-02 | 湖南省滚石智能科技有限公司 | Power line carrier transmission module |
| CN117201186A (en) * | 2023-11-01 | 2023-12-08 | 广东电网有限责任公司佛山供电局 | Cable sheath circulation monitoring data transmission method, device, equipment and medium |
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| CN207732759U (en) * | 2018-01-30 | 2018-08-14 | 湖南工学院 | A kind of SCM Based low-voltage powerline carrier communication interface circuit |
| CN109194686A (en) * | 2018-10-15 | 2019-01-11 | 深圳华海通讯股份有限公司 | A kind of power carrier communication system |
| 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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2021
- 2021-02-22 CN CN202110206653.5A patent/CN113014291A/en active Pending
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| CN102118184A (en) * | 2009-12-30 | 2011-07-06 | 比亚迪股份有限公司 | Device and method for power line carrier communication |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115001535A (en) * | 2022-05-27 | 2022-09-02 | 湖南省滚石智能科技有限公司 | Power line carrier transmission module |
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| CN117201186A (en) * | 2023-11-01 | 2023-12-08 | 广东电网有限责任公司佛山供电局 | Cable sheath circulation monitoring data transmission method, device, equipment and medium |
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Application publication date: 20210622 |