CN201004633Y

CN201004633Y - A network adapter for power line communication

Info

Publication number: CN201004633Y
Application number: CNU200720118372XU
Authority: CN
Inventors: 王民利; 孙德志
Original assignee: Shenzhen Gongjin Electronics Co Ltd
Current assignee: Shenzhen Gongjin Electronics Co Ltd
Priority date: 2007-01-30
Filing date: 2007-01-30
Publication date: 2008-01-09
Anticipated expiration: 2017-01-30

Abstract

The utility model discloses an electrical wire communication network adapter, which includes a CPU 1; a high speed simulation front end unit 2 which is connected with the CPU 1; a driving or filtering unit 3 which is connected with the high speed simulation front end unit 2; a signal coupling or separating unit 4 which is connected with the driving or filtering unit 3 and the outside electrical wire; an Ethernet physical layer unit 5 which is connected with the CUP 1; an Ethernet interface unit 6 which is connected with the Ethernet physical layer unit 5 and connected with the user terminal device by the Ethernet, a memorizer unit 7 which is connected with the CPU 1; a LED 8 which is connected with the CPU 1; a power supply unit 9 which is supplied by the outside AC source and provides the needed voltage to each unit. The key elements of the utility model all choose the high performance and high speed element, with the communication rate up to 200Mbps, small volume, simple collocation, instant plug and play availability.

Description

A kind of power line communication network adapter

Technical field

The utility model belongs to the broadband network access device field, relates in particular to a kind of power line communication network adapter with high speed communication function.

Background technology

Power line communication (Power Line Communication, be called for short PLC) is the technology that power line network carrier wave that a kind of utilization has existed carries out broadband connections.

At present, the power line communication product is divided into two parts: outdoor PLC access device (Outdoor) and indoor user end equipment (Indoor).ADSL and CABLELAN turn-on time are used early in present network insertion field, and the popularity rate height is so change the regional fewer of application/newly-built PLC access device; And ustomer premises access equipment, because indoor power line network is more much higher than the popularity rate of Ethernet (ETH network), so ustomer premises access equipment is used wider.

Fig. 1 has provided the schematic diagram of using the ETH network, there is following defective: need set up again, the netting twine of arranging of fixing a point, need the multi-port network switch, computer quantity in the port number of switch is greater than and equals to net, and can destroy place decoration and attractive in appearance, quantities is relatively big.The power application spider lines carries out communication, can overcome above shortcoming, as shown in Figure 2, provided the schematic diagram of power application spider lines constructing local network, be connected with network access equipment by a power line communication network adapter earlier, communication signal is incorporated into electrical network, each equipment that need connect network is connected to electrical network with a power line communication network adapter respectively, both can realize the networking of power line communication network adapter, and power line communication network adapter plug and play, can come mobile Internet access position at any time by changing the supply socket of using.

At present, 14Mbps and 85Mbps speed power line communication product have obtained than extensive use, raising along with the home network rate request, low communication speed series of products no longer can satisfy client's demand, and the power line communication network adapter that therefore needs the high communication speed of exploitation is to satisfy client's demand.

The utility model content

The purpose of this utility model is to provide a kind of access that has the high speed communication function, can realize broadband network/shared power line communication network adapter.

For addressing the above problem the utility model by the following technical solutions:

A kind of power line communication network adapter comprises:

Central control unit;

Can realize the control of mould/number, D/A switch and automatic gain and the high speed analog front-end unit of clock is provided for central control unit;

Be connected, be used for the output driving of signal and driving/filter unit of importing high-order filtering with the high speed analog front-end unit;

Be connected with driving/filter unit and extraneous power line, can carry out the signal coupling/isolated location that the signal coupling reaches power line carrier and isolates strong and weak electricity by the high frequency magnet ring;

Ethernet physical layer unit (ETH PHY unit) is connected with central control unit;

Ethernet interface unit (ETH interface unit) is connected with ethernet physical layer unit (ETH PHY unit), and is connected with subscriber terminal equipment by ethernet line;

Be connected, be used for storage system start-up routine and variable parameter with central control unit and provide the storage of routine data and as the memory cell of the buffer of transmission/reception data;

Be connected, be used for characterizing the LED light of operating state with central control unit;

By extraneous ac power supply and the power subsystem of required voltage is provided for each unit.

Described central control unit is high performance Int6000 type central processing element, is connected to the high speed analog front-end unit by control bus (AFE bus) and data-interface.

Described high speed analog front-end unit is high speed, high-precision AD9865 cake core.

Described driving/filter unit comprises driver element and filter unit, and driver element is the OPA2674 cake core, and the output that is used for signal drives; Filter unit is the high-order filter unit, is used to import high-order filtering.

Described memory cell comprises read-only memory and high speed random asccess memory; Read-only memory is connected with central control unit, is used for storage system start-up routine and variable parameter; The high speed random asccess memory is connected with central control unit, for central control unit provides the storage of routine data and the buffer of conduct transmission/reception data.

Described read-only memory is a W25P16 type read-only memory; The high speed random asccess memory is high speed random asccess memory such as AT3664164P-7H, M12L64164-7T type.

Described ethernet physical layer unit is connected with central control unit by Media Independent Interface bus (MII bus); Ethernet interface unit (ETH interface unit) is connected with ethernet line by its RJ45 network interface, and ethernet line is connected with subscriber terminal equipment.

Described LED light is made up of three light-emitting diodes, and three light-emitting diodes are respectively power supply indicator, network port indicator, power line data indicator light, all are connected with central control unit by resistance, are used for characterizing operating state; The resistance value of described resistance is 200 Ω.

Described power subsystem adopts the Switching Power Supply of AC100-230V, 50/60Hz input.

The utility model compared with prior art, at first owing to adopt alternating voltage directly to power, the high-performance central controller, at a high speed, the high-precision analog front end, high-speed large capacity memory, general PHY chip, LED working station indicator, built-in switch power supply, coupling of high frequency magnet ring signal and isolation, key element is all selected high-performance, device at a high speed for use, to be implemented in power line communication two-forty in the application, can reach 200Mbps; The second, the utility model can be realized access/shared, the multiple business that communication speed is had relatively high expectations such as SD/HD video is shared, video/audio data stream is shared, computer data is shared, online game of broadband network; The 3rd, the utility model volume is little, and configuration is simple, and external accessories is few, but also safety and energy-conservation, but plug and play.

Description of drawings

Fig. 1 is an ETH network organizing schematic diagram;

Fig. 2 is a power line communication network adapter networking schematic diagram;

Fig. 3 is the schematic block circuit diagram of the utility model power line communication network adapter.

Embodiment

In order to understand the utility model better, the utility model is done to describe further below in conjunction with accompanying drawing.

As shown in Figure 3, power line communication network adapter of the present utility model comprises: central control unit 1; Be connected, can realize the control of mould/number, D/A switch and automatic gain with central control unit 1 and the high speed analog front-end unit 2 of clock is provided for central control unit 1; Be connected, be used for the output driving of signal and driving/filter unit 3 of importing high-order filtering with high speed analog front-end unit 2; Be connected with driving/filter unit 3 and extraneous power line, can carry out the signal coupling/isolated location 4 that the signal coupling reaches power line carrier and isolates strong and weak electricity by the high frequency magnet ring; ETH PHY unit 5 is connected with central control unit 1; ETH interface unit 6 is connected with ETH PHY unit 5, and is connected with subscriber terminal equipment by ethernet line; Be connected, be used for storage system start-up routine and variable parameter with central control unit 1 and provide the storage of routine data and as the memory cell 7 of the buffer of transmission/reception data; Be connected, be used for characterizing the LED light 8 of operating state with central control unit 1; By extraneous ac power supply and the power subsystem 9 of required voltage is provided for each unit.

Central control unit 1 is high performance Int6000 type central processing element, is connected to high speed analog front-end unit 2 by control bus and data-interface; High speed analog front-end unit 2 is high speed, high-precision AD9865 cake core; Driving/filter unit 3 comprises driver element 31 and filter unit 32, and driver element 31 is OPA2674 cake cores, and the output that is used for signal drives; Filter unit 32 is high-order filter units, is used to import high-order filtering; Memory cell 7 comprises read-only memory 71 and high speed random asccess memory 72; Read-only memory 71 is connected with central control unit 1, is used for storage system start-up routine and variable parameter; High speed random asccess memory 72 is connected with central control unit 1, for central control unit 1 provides the storage of routine data and the buffer of conduct transmission/reception data; Read-only memory 71 is W25P16 type read-only memorys; High speed random asccess memory 72 is AT3664164P-7H type high speed random asccess memory, also can use the chip of same capacity, parameter to substitute, as M12L64164-7T etc.; ETH PHY unit 5 is connected with central control unit 1 by the MII bus; ETH interface unit 6 is connected with ethernet line by its RJ45 network interface, and ethernet line is connected with subscriber terminal equipment; LED light 8 is made up of three light-emitting diodes, and three light-emitting diodes are respectively power supply indicator, network port indicator, power line data indicator light, all are connected with central control unit 1 by resistance, are used for characterizing operating state; The resistance value of resistance is 200 Ω; Power subsystem 9 adopts the Switching Power Supply of AC100-230V, 50/60Hz input.

In the present embodiment, central control unit 1 adopts high performance Int6000 type central processing element, high speed analog front-end unit 2 adopts at a high speed, high-precision AD9865 cake core, makes power line communication speed can reach 200Mbps, and whole system is by power subsystem 9 power supplies.External AC100V-230V, 50/60Hz power supply, through the required 10V and the 3.3V of AC/DC change-over circuit output system of power subsystem 9, and by the required core voltage 1.2V of DC/DC change-over circuit output central processing element.After system powers on, load the program/variable in the read-only memory automatically, under the control of central control unit 1, finish System self-test, enter and treat operating state.ETH PHY unit 5 receives the signal that subscriber terminal equipment such as PC etc. send, after the processing, give central control unit 1 by MII bus transfer signal, carry out signal processing and send to high speed analog front-end unit 2 by central control unit 1, carry out D/A switch by high speed analog front-end unit 2, through over-drive unit 31, signal coupling/isolated location 4, the signal carrier that modulates to power line, is finished the modulation of power line signal; From power line during received signal with send opposite, be that signal is earlier through signal coupling/isolated location 4 and filter unit 32, extract useful signal and give high speed analog front-end unit 2, carry out mould/number conversion by high speed analog front-end unit 2, the signal of handling well is offered central control unit 1, finish the demodulation of power line signal; Handle through ETH PHY unit 5, output signal to subscriber terminal equipment, as PC etc.

The utility model can so that power line communication speed reaches 200Mbps, can be widely used in electric power The line communication has high efficiency, characteristics such as volume is little, quality is light, safety, environmental protection.

Claims

1. a power line communication network adapter is characterized in that, comprising:

Central control unit (1);

Be connected, can realize mould/number, D/A switch and automatic gain control with central control unit (1) and the high speed analog front-end unit (2) of clock is provided for central control unit (1);

Be connected, be used for the output driving of signal and driving/filter unit (3) of importing high-order filtering with high speed analog front-end unit (2);

Be connected with driving/filter unit (3) and extraneous power line, can carry out the signal coupling/isolated location (4) that the signal coupling reaches power line carrier and isolates strong and weak electricity by the high frequency magnet ring;

Ethernet physical layer unit (5) is connected with central control unit (1);

Ethernet interface unit (6) is connected with ethernet physical layer unit (5), and is connected with subscriber terminal equipment by ethernet line;

Be connected, be used for storage system start-up routine and variable parameter with central control unit (1) and provide the storage of routine data and as the memory cell (7) of the buffer of transmission/reception data;

Be connected, be used for characterizing the LED light (8) of operating state with central control unit (1);

By extraneous ac power supply and the power subsystem (9) of required voltage is provided for each unit.

2. power line communication network adapter according to claim 1 is characterized in that, described central control unit (1) is an Int6000 type central processing element, is connected to high speed analog front-end unit (2) by control bus and data-interface.

3. power line communication network adapter according to claim 2 is characterized in that, described high speed analog front-end unit (2) is the AD9865 cake core.

4. power line communication network adapter according to claim 3 is characterized in that, described driving/filter unit (3) comprises driver element (31) and filter unit (32), and driver element (31) is the OPA2674 cake core, and the output that is used for signal drives; Filter unit (32) is the high-order filter unit, is used to import high-order filtering.

5. power line communication network adapter according to claim 4 is characterized in that, described memory cell (7) comprises read-only memory (71) and high speed random asccess memory (72); Read-only memory (71) is connected with central control unit (1), is used for storage system start-up routine and variable parameter; High speed random asccess memory (72) is connected with central control unit (1), for central control unit (1) provides the storage of routine data and the buffer of conduct transmission/reception data.

6. power line communication network adapter according to claim 5 is characterized in that, described read-only memory (71) is a W25P16 type read-only memory; High speed random asccess memory (72) is AT3664164P-7H, M12L64164-7T high speed random asccess memory.

7. according to each described power line communication network adapter of claim 1～6, it is characterized in that described ethernet physical layer unit (5) is connected with central control unit (1) by the Media Independent Interface bus; Ethernet interface unit (6) is connected with ethernet line by its RJ45 network interface, and ethernet line is connected with subscriber terminal equipment.

8. power line communication network adapter according to claim 7, it is characterized in that, described LED light (8) is made up of three light-emitting diodes, three light-emitting diodes are respectively power supply indicator, network port indicator, power line data indicator light, all be connected with central control unit (1), be used for characterizing operating state by resistance.

9. power line communication network adapter according to claim 8 is characterized in that, the resistance value of described resistance is 200 Ω.

10. power line communication network adapter according to claim 9 is characterized in that, described power subsystem (9) adopts the Switching Power Supply of AC100-230V, 50/60Hz input.