CN202513926U

CN202513926U - Carrier network interface converter

Info

Publication number: CN202513926U
Application number: CN2012200453027U
Authority: CN
Inventors: 肖兰
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-02-13
Filing date: 2012-02-13
Publication date: 2012-10-31
Anticipated expiration: 2022-02-13

Abstract

The utility model relates to a carrier network interface converter, which comprises a master control module, a carrier interface module, a data storage buffer module and a network interface module. The carrier network interface converter is characterized in that the master control module is respectively connected with the carrier interface module, the data storage buffer module and the network interface module; a data of the device to be communicated with a network on site is accessed by the master control module through the carrier interface module, is buffered by a data pool of the data storage buffer module, is converted into standard TCP/IP (transmission control protocol/internet protocol) protocol data through format conversion, and at last is connected to an Ethernet network through the network interface module and accessed into a network system.

Description

The carrier network interface convertor

Technical field

The utility model relates to a kind of Network Interface Unit, especially the carrier network interface convertor.

Background technology

Need on-the-spot network access facility at a lot of industrial circles, and the Network Transmission cost of standard is very high, traditional Network Interface Unit interface is single; Some is to use standard network interface; Distance is restricted, and the cost of wiring does not possess network interface than higher under a lot of situation of industry spot; Have though power line is the scene, lack a kind of means of carrying out network data transmission through power line at present.

Summary of the invention

Single in order to overcome existing Network Interface Unit interface, wiring cost is too high, needs the deficiency of special wiring, and the utility model provides a kind of carrier network interface convertor.Adopt the power carrier transmission means, have special carrier processor and be used for the parallel data passage that rapid data is handled, can realize that the power carrier data are through carrying out the transfer of data conversion after the protocol conversion simultaneously under standard network.

The utility model solves the technical scheme that its technical problem adopted: the carrier network interface convertor; Comprise main control module, carrier interface module, storage buffer module, Network Interface Module; It is characterized in that main control module is connected with carrier interface module, storage buffer module, Network Interface Module respectively.Main control module through the carrier interface module insert scene need with the data of the equipment of network communication, pass through Network Interface Module and Ethernet connection access network network system after becoming standard ICP/IP protocol data through the data pool buffering of storage buffer module and through format conversion.

The beneficial effect of the utility model is, can realize carrying out the transfer of data conversion through power line, and satisfied scene need not to carry out the environmental requirement of data arrange, and is convenient flexibly, has very high practical value.

Description of drawings

Fig. 1 is the theory diagram of the utility model; Fig. 2 is the electric structure chart of the utility model.

Embodiment

In Fig. 1; The carrier network interface convertor; Comprise main control module 1, carrier interface module 2, storage buffer module 3, Network Interface Module 4, it is characterized in that main control module 1 is connected with carrier interface module 2, storage buffer module 3, Network Interface Module 4 respectively.Main control module 1 through carrier interface module 2 insert scene need with the data of the equipment of network communication, become after the standard ICP/IP protocol data through Network Interface Module 4 and Ethernet connection access network network system through the data pool buffering of storage buffer module 3 and through format conversion.

In Fig. 2, main control module 1 is selected C805lF330 for use, since the inner integrated high precision clock source of C805lF330, enough system's uses of the Flash of its inner 64 KB.Therefore, when design oscillating circuit and memory circuit, need not expansion, only need designing power supply circuit, carrier wave change-over circuit and reset circuit.Carrier interface module 2 is the hartley oscillator of 135KHz by the form component frequency that Q1, Q2 are connected into multiple tube.Constituting voltage by C2, D1, D2, D3, C5 etc. is 30 volts power unit, and the oscillator signal that becomes the 135KHz that induces in the pair of L1 sends data on the power line through C1.Storage buffer module 3 adopts the EEP-ROM interface, and as the data buffering module, the initial value of all internal registers can be placed on earlier among the EEPROM, is input in the chip through the EEPROM interface during bootstrapping again, thereby realizes auto-initiation.Network Interface Module 4 adopts LAN91C111 ethernet controller and 802.3 Ethernet host-host protocols.Its 8-32 bit data bus interface units link to each other with the CPU of outside with data/address bus through control bus, address bus.External data can 8,16 or 32 mode and LAN91C111 exchange.Bus arbiter is used for keeping watch on the data interchange situation of industry ethernet; In case cause clogging; Moderator is got in touch through Bus Interface Unit and outer CPU on the one hand, controls memory control unit (MMU) and storage buffer module on the other hand, realizes the bus data coordination.The storage condition of the dynamic SRAM of memory control unit may command 8kB realizes that data contact dma controller and the bus control unit between the DMA controller controlled the exchanges data between DMA and the Ethernet protocol processor (EPH).The physical layer (PHY) that the data that the Ethernet protocol processor comes out are finally passed through 10Mb/s/100Mb/s directly arrives industry ethernet.Because LAN91C111 aims at Embedded System Design, therefore, its peripheral circuit is relatively simple.

Claims

1. carrier network interface convertor; Comprise main control module (1), carrier interface module (2), storage buffer module (3), Network Interface Module (4); It is characterized in that main control module (1) is connected with carrier interface module (2), storage buffer module (3), Network Interface Module (4) respectively.