CN103973520B - The more medium high-speed wideband interconnecting terminal devices of power line carrier - Google Patents
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Abstract
The present invention relates to power line, telephone wire, coaxial line carrier communication equipment fields, disclose a kind of more medium high-speed wideband interconnecting terminal devices of power line carrier.In the present invention, by receiving the network digital signal from Ethernet interface, network digital signal is converted into analog signal, and export to power line carrier interface, telephone line interface or coaxial line interface；Or receive the analog signal from power line carrier interface, telephone line interface or coaxial line interface, convert analog signals into network digital signal, and it exports to Ethernet interface, the high speed interconnected communication of the two-wires media such as telephone wire, coaxial line, power line, ethernet line can be realized by signal loading on telephone wire, coaxial line, power line.Communication is carried out on above-mentioned transmission medium due to the use of unified signal(-) carrier frequency, solves signal conflict and signal coupled problem when being communicated using power line, telephone wire, coaxial line.
Description
Technical Field
The invention relates to the field of power line, telephone line and coaxial line carrier communication equipment, in particular to a power line carrier multi-medium high-speed broadband interconnection terminal device.
Background
With the rapid development of national economy of China and the great improvement of the living standard of people, modern families generally access a high-definition video network, a telephone line network and a broadband network, but the modern family decoration and the family network application of the modern optical speed network have contradictions:
1. the high-definition network video is mainly applied to the television, and no network cable is arranged beside the television, and only a coaxial cable and a power line are arranged.
2. Applications for VOIP require a network, which may only have telephone lines, and may not have power and network wires where a suitable place for a cellular phone is to be found
The above two types of applications cannot solve the problem of transmitting broadband high-definition video without wiring for the conventional network device.
In addition, for some households, due to the development of information technology and the upgrade of networks, the original coaxial lines and telephone lines are not used any more, for example, the analog television is changed into an Internet Protocol Television (IPTV), the analog telephone is changed into a Voice Over Internet Protocol (VOIP) and the like, and the efficient reuse of the discarded coaxial lines and telephone lines is a practical and development-promising technology.
However, the current telephone line, coaxial line, power line communication technologies have the following limitations:
1. a Power Line Communication terminal (PLC) can only transmit data by means of a Power Line, and electrical equipment on the Power Line is complex and has a lot of interference, and cannot meet the requirements of Communication bandwidth and Communication distance in a special environment.
2. The carrier communication mode loaded on a telephone Line is mainly an Asymmetric Digital Subscriber Line (ADSL) mode, the technology has limited bandwidth and high cost, and is not suitable for being used in household broadband, and particularly cannot play the potential in the application of household high-definition video at present.
3. In addition to the limited use of home coaxial cables for cable television, in the cable television network improvement performed in some areas, the home broadband is accessed by a method of transmitting Ethernet Over Coax (EOC) data through the coaxial cables, and the home coaxial cables are playing more roles.
Therefore, no matter the house is an old house or a newly decorated house, no matter the basic dwelling or a high-grade villa, one-time decoration always cannot solve all the requirements of network development, and particularly the broadband signal problem which can be solved more quickly and more quickly without wall penetration and hole drilling and rewiring under the broadband requirements of broadband networks and high-definition videos in the optical speed era.
According to the practical situation, all available broadband resources in a family are integrated, the broadband requirement in the family is met, the total electromagnetic radiation amount in the family is reduced, and the use of a wireless network is reduced as much as possible.
Disclosure of Invention
The invention aims to provide a power line carrier multi-medium high-speed broadband interconnection terminal device, which solves the problems of signal collision and signal coupling when power lines, telephone lines and coaxial lines are adopted for communication.
To solve the above technical problem, an embodiment of the present invention provides a power line carrier multimedia high-speed broadband interconnection terminal device, including: an external interface, a power supply and a signal exchange processor; the power supply and signal exchange processor is connected with the external interface;
wherein the external interface comprises: an ethernet interface and any one or any combination of the following: the power line carrier interface, the telephone line interface and the coaxial line interface; the telephone line interface and the coaxial line interface are connected with any cable with two conducting lines;
the power supply and signal exchange processor receives the network digital signal from the Ethernet interface, converts the network digital signal into an analog signal, and outputs the analog signal to any one or any combination of the following interfaces: the power line carrier interface, the telephone line interface and the coaxial line interface; or,
the power supply and signal exchange processor receives analog signals from any one or any combination of the following interfaces: the power line carrier interface, the telephone line interface and the coaxial line interface convert analog signals into network digital signals and output the network digital signals to the Ethernet interface.
Compared with the prior art, the embodiment of the invention converts the network digital signal into an analog signal by receiving the network digital signal from the Ethernet interface and outputs the analog signal to the power line carrier interface, the telephone line interface or the coaxial line interface; or receiving the analog signal from the power line carrier interface, the telephone line interface or the coaxial line interface, converting the analog signal into a network digital signal, outputting the network digital signal to the Ethernet interface, and loading the signal on the telephone line, the coaxial line and the telephone line to realize the communication among the telephone line, the coaxial line, the power line and the power line. Because the electrical characteristics and signal characteristics of telephone lines, coaxial lines and power line transmission media are different, different transmission media cannot be directly interconnected, signal collision is generated, and normal signal transmission is influenced. The invention provides a novel transmission medium coupling method and circuit, and uses uniform signal carrier frequency to implement communication on the transmission medium, thereby solving the problems of signal collision and signal coupling when the power line, the telephone line and the coaxial line are adopted for communication, and realizing the high-speed interconnection communication of the power line, the telephone line, the coaxial line and other double-line media and the Ethernet line.
In addition, the power supply and handshake processor includes: the signal coupling unit and the central processing unit;
the signal coupling unit is connected with the central processing unit and is connected with any one or any combination of the power line carrier interface, the telephone line interface and the coaxial line interface;
the central processing unit is connected with the Ethernet interface.
Through the signal coupling mode, improve the transmission of signal between ethernet, power line network, telephone line network and coaxial line network, can further solve signal conflict and signal coupling problem when adopting power line, telephone line, coaxial line to communicate.
In addition, the central processing unit includes: the device comprises a modulation and demodulation central processing subunit, a signal processing subunit, an Ethernet processing subunit, a Flash Memory and a Memory;
the Ethernet processing subunit processes and receives the signals from the Ethernet interface and carries out conversion between the Ethernet signals and the data of the adjusting and demodulating central processing subunit;
the modulation and demodulation central processing subunit encodes or decodes the signal and coordinates the working state among all the modules; the modulation and demodulation central processing subunit is directly connected with the Flash Memory and the Memory;
the Flash Memory is used for storing an operating system and working parameters of the modulation and demodulation central processing subunit, and the Memory provides a required dynamic data storage space for the modulation and demodulation central processing subunit after being started;
the front end of the signal processing subunit is directly connected with the signal coupling circuit, and the rear end of the signal processing subunit is directly connected with the modulation and demodulation central processing subunit to perform analog-digital-analog conversion between the front end analog signal and the rear end digital signal.
Through the modulation and demodulation technology, the frequency band and the amplitude which can be commonly used are selected according to the characteristics of the frequency band and the amplitude of the signal which can be transmitted on a power line, a telephone line and a coaxial line and the property of the original application signal, the signal transmission is carried out on the basis of not influencing the original application, and the comprehensive coverage of the home network can be realized.
In addition, the power supply and signal exchange processor further includes: a power line safety isolation unit;
the power line safety isolation unit is respectively connected with the power line carrier interface and the signal coupling unit.
The power line safety isolation unit is adopted to isolate strong electricity in the front-end power line network from the internal circuit, so that the internal device is protected from external strong electricity interference, and the requirements of communication bandwidth and communication distance of power line carrier communication are met.
In addition, the signal coupling unit is a coupling transformer;
the coupling transformer consists of a magnetic ring and at least two groups of windings, and frequency response parameters are set to be one value in the frequency range of transmission signals of the power line carrier multi-medium interconnection terminal device;
each group of windings is formed by surrounding a magnetic ring by an independent insulated wire, wherein two taps in one group of windings are connected to the central processing unit, two taps in other windings are respectively connected to the corresponding one of the power line safety isolation unit or the external interface, and the two taps of each winding are only connected with one interface circuit in the external interface.
Signals of a telephone line, a coaxial line and a power line are coupled and transmitted with each other through transformer coupling, and because each group of windings of the coupling transformer is insulated and isolated, direct current components in any network or power components outside the frequency range cannot be coupled into other networks.
In addition, the power line safety isolation unit includes: the input end, the fuse, the piezoresistor and the safety capacitor;
the input end is provided with two wires which are respectively connected with a live wire and a zero wire or a positive electrode and a negative electrode in the power line carrier interface, are connected with the fuse in series, are connected with the piezoresistor in parallel, are respectively connected with two wires in series with a safety capacitor and then are connected with two taps of a winding in the coupling transformer; and the safety capacitor transmits signals in the frequency range, isolates signals and voltages of other frequencies, and disconnects a connected circuit when an external circuit exceeds a load.
The power line safety isolation unit adopts a fuse to perform overcurrent protection; adopting a piezoresistor to perform overvoltage protection; the strong current and back end circuit at the front end is isolated by adopting a safety capacitor, so that the internal circuit of the invention is protected, and the aims of meeting the requirements of communication bandwidth and communication distance of power line carrier communication are fulfilled.
In addition, the power supply and signal exchange processor also comprises a high-voltage-resistant capacitor which is connected between the telephone line interface or the coaxial line interface and the winding in the coupling transformer in series. The direct current component in the telephone line/twisted pair line or coaxial line network is isolated by adopting the high-voltage-resistant capacitor, so that the signal coupling unit can be protected from being influenced by a load power supply in an external network.
In addition, the method also comprises the following steps: the power supply interface and the power processing circuit; the power supply interface and the power line carrier interface are collectively called as a power interface;
the power supply processing circuit is respectively connected with the power supply interface and the power supply and signal exchange processor, and converts a power supply input from the power supply interface into at least one group of direct current power supplies required by the signal exchange processor; the input power supply is an alternating current power supply or a direct current power supply.
The power supply processing circuit provides various power supplies required by the internal circuit in the device, so that the device is suitable for various external input power supplies, is convenient for people to use and is convenient for product popularization.
In addition, the telephone line interface is connected with a telephone line or a common twisted pair network and is connected with at least one telephone line or a twisted pair network port;
the coaxial line interface is connected with a common coaxial line network and is connected with at least one coaxial line network port;
the Ethernet interface is connected with an Ethernet and is connected with at least one Ethernet port.
The telephone line interface, the coaxial line interface and the Ethernet interface are respectively connected with a plurality of telephone line or twisted-pair line network ports, coaxial line network ports and Ethernet ports, so that the interconnection of any network can be realized, and the comprehensive coverage of a home network is further realized.
Drawings
FIG. 1 is a diagram of a power line carrier multimedia interconnection terminal according to a preferred embodiment of the present invention;
fig. 2 is a schematic diagram of a power line carrier multimedia interconnection terminal device connecting two coaxial interfaces;
FIG. 3 is a schematic diagram of the architecture of the power supply and handshake processor;
FIG. 4 is a schematic diagram of a CPU;
FIG. 5 is a schematic diagram of an Ethernet processing unit circuit;
FIG. 6 is a symbol diagram of a signal coupling unit;
FIG. 7 is a schematic diagram of a signal coupling unit;
fig. 8 is a schematic diagram of a power line safety isolation unit;
fig. 9 is a schematic diagram of signal isolation between a telephone line interface or a coaxial line interface and a signal coupling unit;
fig. 10 is a schematic diagram of a power supply processing circuit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solutions claimed in the claims of the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.
The embodiment of the invention relates to a power line carrier multimedia interconnection terminal device, which comprises an external interface, a power supply and signal exchange processor, wherein the power supply and signal exchange processor is connected with the external interface, as shown in figure 1. The power supply and signal exchange processor receives the network digital signal from the Ethernet interface, converts the network digital signal into an analog signal and outputs the analog signal to other external interfaces; or the power supply and signal exchange processor receives analog signals from other external interfaces, converts the analog signals into network digital signals and outputs the network digital signals to the Ethernet interface. In the invention, through modulation and demodulation technology, according to the characteristics of frequency bands and amplitudes of signals which can be transmitted on a power line, a telephone line and a coaxial line and the properties of original application signals, the frequency bands and the amplitudes which can be commonly used are selected, the signals are transmitted on the basis of not influencing the original application, the proper frequency is selected according to the characteristics of the line, and the setting is carried out through software. The coupling method of the signals is improved, and the signals of the telephone line, the coaxial line and the power line are coupled and transmitted mutually through the transformer coupling, so that the telephone line, the coaxial line, the power line and the mutual communication of the telephone line, the coaxial line and the power line are realized. Because the electrical characteristics and signal characteristics of telephone lines, coaxial lines and power line transmission media are different, different transmission media cannot be directly interconnected, signal collision is generated, and normal signal transmission is influenced. The invention provides a novel transmission medium coupling method and circuit, and uses uniform signal carrier frequency to implement communication on the transmission medium, thereby solving the problems of signal collision and signal coupling when the power line, the telephone line and the coaxial line are adopted for communication, and realizing the high-speed interconnection communication of the power line, the telephone line, the coaxial line and other double-line media and the Ethernet line.
Wherein, the external interface includes: an ethernet interface and any one or any combination of the following: power line carrier interface, telephone line interface and coaxial line interface. Specifically, the external interfaces are a power interface 101, a telephone line interface 102, a coaxial line interface 103, and an ethernet interface 104, wherein the power interface provides a power supply interface and a power line carrier interface. The telephone line interface is connected with a telephone line or a common twisted pair network and is connected with at least one telephone line or a twisted pair network port; the coaxial line interface is connected with a common coaxial line network and is connected with at least one coaxial line network port; the Ethernet interface is connected with the Ethernet and is connected with at least one Ethernet port. That is, the telephone line interface is connected with a telephone line or a common twisted pair network, can be connected with a telephone line or a twisted pair network port, and also can be composed of a plurality of similar interfaces; the coaxial line interface is connected with a common coaxial line network and can be composed of one interface or a plurality of interfaces; the ethernet interface is connected to the ethernet network and may be composed of one interface or a plurality of interfaces. In the above interfaces, the power supply interface and the ethernet interface are necessary, and at least one of the power line carrier interface, the telephone line interface, and the coaxial line interface is necessary. When only the power line carrier interface exists, the device realizes the interconnection communication between the Ethernet and the power line network; when only the telephone line interface is available, the device realizes the communication between the Ethernet and the telephone line or the twisted pair network; when only the coaxial line interface is available, the device realizes the communication between the Ethernet and the coaxial line network; when the power line carrier interface is simultaneously connected with the telephone line interface, the device realizes the interconnection communication of the Ethernet, the power line network and the telephone line/twisted pair network; when only the telephone line interface and the coaxial line interface are connected simultaneously, the device realizes the interconnection communication between the Ethernet and the telephone line/twisted pair network and the coaxial line network; when the power line carrier interface, the telephone line interface and the coaxial line interface are connected simultaneously, the device realizes the interconnection communication of the Ethernet, the power line network, the telephone line/twisted pair network and the coaxial network. Fig. 2 is a schematic diagram of a coaxial interface with two or more coaxial interfaces, which is equivalent to a common "three-way" interface, in which two external ports 201 and 202 are connected in a straight-through manner, and an impedance matching circuit is connected between the external port and the internal port, so as to ensure minimum attenuation between signals.
The external interface of the device is connected with a power supply and signal exchange processor, the power supply and signal exchange processor provides power supply required by an internal circuit, and realizes interconnection modes of various networks, coupling and processing of signals, multiple signal interface exchange modes, coordination processing of various components and the like, and the specific implementation is shown as an internal component of a dotted line frame in figure 3. The power supply and signal exchange processor comprises: the signal coupling unit and the central processing unit; the central processing unit is connected with the ethernet interface, and the signal coupling unit is connected with the central processing unit and connected with any one or any combination of the power line carrier interface, the telephone line interface and the coaxial line interface, which is determined according to the specific external interface of the device of the embodiment.
The central processing unit provides connection with the signal coupling unit and the ethernet interface, processes and coordinates signals, and further comprises: a modulation and demodulation central processing subunit, a signal processing subunit, an ethernet processing subunit, a Flash Memory, and a Memory, as shown in fig. 4, the modulation and demodulation central processing unit is a heart of the whole machine and manages the operation of the whole machine, and the ethernet processing subunit and the signal processing subunit work under the coordination thereof. The modulation and demodulation central processing subunit, the signal processing subunit, the Ethernet processing subunit, the Flash and the Memory can be realized in the same chip or can be independent. Specifically, the ethernet processing subunit processes and receives the signal from the ethernet interface, and performs conversion between the ethernet signal and the data of the modem central processing subunit; the modulation and demodulation central processing subunit encodes or decodes the signal and coordinates the working state among all the modules; the modulation and demodulation central processing subunit is directly connected with the Flash Memory and the Memory; the Flash Memory is used for storing an operating system and working parameters of the modulation and demodulation central processing subunit, and the Memory provides a required dynamic data storage space for the modulation and demodulation central processing subunit after being started; the front end of the signal processing subunit is directly connected with the signal coupling circuit, the back end is directly connected with the modulation and demodulation central processing subunit, the analog-digital-analog conversion between the front end analog signal and the back end digital signal is carried out, the signal processing subunit consists of a sending part and a receiving part, the digital signal of the modulation and demodulation central processing subunit is converted into the analog signal which can be transmitted on a telephone line, a coaxial line and a telephone line and is sent out, and meanwhile, the received analog signal is converted into the digital signal which is transmitted to the modulation and demodulation central processing subunit. In addition, since the ethernet interface may be composed of one or more network ports, the ethernet processing subunit further performs time-sharing connection and coordination operations on a single ethernet interface or multiple ethernet interfaces, so that multiple ethernet interface data exchange operations with the modem central processing subunit are performed. That is, the ethernet unit may be composed of one physical chip (PHY) and a port, or may be composed of a plurality of ports and corresponding PHY ethernet switching circuits, and connected for use. Fig. 5 is a schematic diagram of an ethernet processing unit circuit that enables single or multi-port ethernet to exchange and communicate data with a modem central processing unit.
The signal coupling unit provides a connection mode of a power line, a telephone line/twisted pair, a coaxial line and a central processing unit, as shown in fig. 6, which is a symbolic diagram of the signal coupling unit, and represents that the unit is a coupling transformer, and realizes the coupling connection between the winding 1 and the windings 2, 3 and 4, and a specific implementation is shown in fig. 7. The coupling transformer consists of one magnetic loop 700 and multiple sets of windings and sets the frequency response parameters to the frequency range of the transmission signal of the present embodiment, e.g., between 1MHz and 100MHz, or in one or more different intervals in the range of 1MHz to 100 MHz. Each group of windings is formed by surrounding a magnetic ring by an independent insulated wire, wherein two taps in one group of windings are connected to the central processing unit, two taps in other windings are respectively connected to the corresponding one of the power line safety isolation unit or the external interface, and the two taps of each winding are only connected with one interface circuit in the external interface. For example, winding 701 is connected to the central processing unit, winding 702 is connected to the power line safety isolation unit, winding 703 is connected to the telephone line processing interface, and winding 704 is connected to the coaxial line processing interface. Signals of a telephone line, a coaxial line and a power line are coupled and transmitted with each other through transformer coupling, and because each group of windings is insulated and isolated, direct current components in any network or power components outside a frequency range cannot be coupled into other networks. The number of windings is at least two, and can be three, four or five, depending on the number of networks to be connected. The windings may be 2 groups (1: 1), 3 groups (1:1: 1), 4 groups (1:1:1: 1), 5 groups (1:1:1:1:1) according to different application forms, so as to aim at different applications:
group 2 (1: 1), group 3 (1:1: 1): a power line, or a telephone line, or a coaxial line;
3 groups (1:1: 1), 4 groups (1:1:1: 1): the power line and the coaxial line, or the power line and the telephone line, or the coaxial line and the telephone line;
4 groups (1:1:1: 1), 5 groups (1:1:1:1: 1): power lines, coaxial lines, telephone lines;
furthermore, the power supply and signal exchange processor further comprises: a power line safety isolation unit; the power line safety isolation unit is respectively connected with the power line carrier interface and the signal coupling unit, and provides a safety isolation mode of external strong electricity and the device. As shown in fig. 8, the power line safety isolation unit includes: an input end 801, a fuse 802, a piezoresistor 803 and a safety capacitor 804; the input end is provided with two wires which are respectively connected with a live wire and a zero wire or a positive electrode and a negative electrode in a power line carrier interface, are connected with a fuse in series and a piezoresistor in parallel, and are respectively connected with two taps 805 of a winding in a coupling transformer after being connected with a safety capacitor in series on the two wires. That is, the ports L and N are respectively connected to the live line and the zero line (ac power supply) or the positive pole and the negative pole (dc power supply) of the power line, and are connected in series with a fuse for overcurrent protection; the parallel piezoresistors are used for overvoltage protection, and particularly, when an input power supply is larger than a rated value, the piezoresistors are conducted to discharge excess charges, so that internal devices are protected; two safety capacitors are connected in series on the two wires and used for isolating the strong current at the front end from the back end circuit, so that the safety problem of coupling with the power line is solved; when the voltage and the current of the front-end power supply exceed the rated value, the safety capacitor is immediately disconnected, and an internal circuit of the device is protected. In addition, the safety capacitor only transmits signals within a frequency range and isolates signals and voltage outside the frequency range so as to achieve the purpose of isolating the signals.
The power supply and signal exchange processor further comprises a high voltage tolerant capacitor 901, as shown in fig. 9, connected in series between the telephone line interface or coaxial line interface 902 and the winding 903 in the coupling transformer, for isolating the dc component in the telephone line/twisted pair or coaxial line network and protecting the signal coupling unit from the load power in the external network.
The power supply processing circuit provides various power supply modes required by the device. The power supply processing circuit is respectively connected with the power supply interface and the power supply and signal exchange processor, and converts the power supply input from the power supply interface into at least one group of direct current power supplies required by the signal exchange processor; the input power supply is an alternating current power supply or a direct current power supply. In practical implementation, the power supply can be a switching power supply, which can input 85-265V of alternating current and direct current, outputs 12V, 5V, 3.3V and the like, mainly comprises a protection module, an isolation module, a rectification module, a filtering module, a switching module, a transformer and a feedback loop, and supplies power to the whole machine, as shown in fig. 10, the power supply has the function of converting the input power supply into one or more groups of direct current power supplies with different voltages and powers required by a circuit. The power input can be an alternating current power supply or a direct current power supply; compared with a direct current power supply, when the alternating current power supply is an input power supply, the unit needs to transform and rectify the alternating current power supply.
In practical implementation, the external portion of the whole machine mainly comprises a power plug (or a socket), a network port (RJ 45), a telephone interface (RJ 11), a coaxial port (BNC connector), an indicator light, a button and the like, wherein the indicator light respectively corresponds to signal indications such as a power supply, an ethernet, a signal (three colors of two lights) and the like, and the button is mainly used for networking, quitting the network, recovering the factory state and the like.
The device of the invention can communicate through the power line alone; can communicate through telephone line alone; can communicate through the coaxial line alone; can also be mixed through power line and telephone communication; the communication can also be realized by mixing power lines and coaxial lines; the communication can also be realized by a coaxial line and a telephone line; the mixed communication can be carried out through three lines of a coaxial line, a telephone line and a power line, so that the device can bring the following effects:
1. the device of the invention can realize the comprehensive coverage of the home network: there is a network where there is electricity, a network where there is a telephone line, and a network where there is a coaxial line (television line). The system basically covers all positions of home network application, and can satisfactorily solve the problems of common internet surfing, internet telephone, internet video and high-definition video.
2. For the telephone line and the central axis which are also applied, a new function of transmitting broadband is added without influencing the original function. The value of the line is increased, new network wiring is reduced, decoration cost is reduced, material cost is saved, and resource reuse is achieved.
3. For some homes, telephone lines have become obsolete due to the upgrading of phones (handset and internet phone, lower cost). Due to the development of network television (such as telecom high definition IPTV), coaxial cable is no longer used. The telephone lines and the coaxial lines in the families have no function and belong to wastes, and the invention utilizes the resources and solves the practical problems in the families.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (8)
1. A power line carrier multi-medium high-speed broadband interconnection terminal device is characterized by comprising: an external interface, a power supply and a signal exchange processor; the power supply and signal exchange processor is connected with the external interface;
wherein the external interface comprises: an ethernet interface and any one or any combination of the following: the power supply interface, the telephone line interface and the coaxial line interface; the power interface comprises a power line carrier interface; the telephone line interface and the coaxial line interface are connected with any cable with two conducting lines;
the power supply and signal exchange processor receives the network digital signal from the Ethernet interface, converts the network digital signal into an analog signal, and outputs the analog signal to any one or any combination of the following interfaces: the power line carrier interface, the telephone line interface and the coaxial line interface; or,
the power supply and signal exchange processor receives analog signals from any one or any combination of the following interfaces: the power line carrier interface, the telephone line interface and the coaxial line interface convert analog signals into network digital signals and output the network digital signals to the Ethernet interface;
the power supply and handshake processor comprises: the signal coupling unit and the central processing unit;
the signal coupling unit is connected with the central processing unit and is connected with any one or any combination of the power line carrier interface, the telephone line interface and the coaxial line interface;
the central processing unit is connected with the Ethernet interface;
the power supply and handshake processor further comprises: a power line safety isolation unit;
the power line safety isolation unit is respectively connected with the power line carrier interface and the signal coupling unit;
the power line safety isolation unit includes: the input end, the fuse, the piezoresistor and the safety capacitor;
the input end is provided with two wires which are respectively connected with a live wire and a zero wire or a positive electrode and a negative electrode in the power line carrier interface, the fuse is connected in series, the piezoresistor is connected in parallel, and the piezoresistor is connected to the signal coupling unit after the safety capacitor is connected in series on the two wires.
2. The plc multi-media high-speed broadband interconnection terminal device according to claim 1, wherein the cpu comprises: the device comprises a modulation and demodulation central processing subunit, a signal processing subunit, an Ethernet processing subunit, a Flash Memory and a Memory;
the Ethernet processing subunit processes and receives the signals from the Ethernet interface and performs conversion between the Ethernet signals and the data of the modulation and demodulation central processing subunit;
the modulation and demodulation central processing subunit encodes or decodes the signal and coordinates the working state among all the modules; the modulation and demodulation central processing subunit is directly connected with the Flash Memory and the Memory;
the Flash Memory is used for storing an operating system and working parameters of the modulation and demodulation central processing subunit, and the Memory provides a required dynamic data storage space for the modulation and demodulation central processing subunit after being started;
the front end of the signal processing subunit is directly connected with the signal coupling unit, and the rear end of the signal processing subunit is directly connected with the modulation and demodulation central processing subunit to perform analog-digital-analog conversion between the front end analog signal and the rear end digital signal.
3. The terminal apparatus of claim 2, wherein the ethernet processing subunit further performs time-sharing switching-on and coordination operations on a single ethernet interface or at least two ethernet interfaces, so that at least two ethernet interfaces perform data exchange operations with the modem central processing subunit.
4. The power line carrier multi-media high-speed broadband interconnection terminal device according to claim 1, wherein the signal coupling unit is a coupling transformer;
the coupling transformer consists of a magnetic ring and at least two groups of windings, and frequency response parameters are set to be one value in the frequency range of transmission signals of the power line carrier multi-medium interconnection terminal device;
each group of windings is formed by surrounding a magnetic ring by an independent insulated wire, wherein two taps in one group of windings are connected to the central processing unit, two taps in other windings are respectively connected to the corresponding one of the power line safety isolation unit or the external interface, and the two taps of each winding are only connected with one interface circuit in the external interface.
5. The plc multi-media high-speed broadband interconnection terminal device according to claim 4, wherein a frequency range of a transmission signal of the plc multi-media interconnection terminal device is between 1mhz and 100 mhz.
6. The powerline carrier multimedia high-speed broadband interconnection terminal device of claim 4, wherein the power and signal switching processor further comprises a high voltage tolerant capacitor connected in series between the telephone line interface or the coaxial line interface and the winding in the coupling transformer.
7. The plc multi-media high-speed broadband interconnection terminal device according to claim 1, wherein the power supply and signal exchange processor further comprises: a power supply processing circuit;
the power supply interface also comprises a power supply interface;
the power supply processing circuit is respectively connected with the power supply interface and the power supply and signal exchange processor, and converts a power supply input from the power supply interface into at least one group of direct current power supplies required by the signal exchange processor; the input power supply is an alternating current power supply or a direct current power supply.
8. The powerline carrier multi-media high-speed broadband internet termination device of any one of claims 1 to 7, wherein the telephone line interface connects to a telephone line or a common twisted pair network, connecting to at least one telephone line or a twisted pair network port;
the coaxial line interface is connected with a common coaxial line network and is connected with at least one coaxial line network port;
the Ethernet interface is connected with an Ethernet and is connected with at least one Ethernet port.
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| US10374813B2 (en) * | 2015-08-07 | 2019-08-06 | The Boeing Company | Coupler for power line communication and power-over-ethernet |
| CN106209389B (en) * | 2016-08-31 | 2023-05-02 | 博为科技有限公司 | Power supply communication system and communication method based on G.x protocol |
| CN106685483B (en) * | 2017-02-10 | 2020-08-14 | 北京智芯微电子科技有限公司 | System for coupling power distribution station broadband power line carrier zero line |
| CN110798246B (en) * | 2019-09-29 | 2022-02-25 | 华为数字能源技术有限公司 | Interface circuit, group string and system applied to power line communication |
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| CN203313213U (en) * | 2013-01-24 | 2013-11-27 | 上海芯域微电子有限公司 | Power line carrier multi-media high-speed broadband Internet terminal device |
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| EP1770870B1 (en) * | 2005-10-03 | 2019-04-03 | Avago Technologies International Sales Pte. Limited | Powerline communication device and method |
| CN202178779U (en) * | 2011-08-16 | 2012-03-28 | 常州得实新技术开发有限公司 | Triple play oriented internet of things gateway |
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