CN201479157U

CN201479157U - Ethernet type ZigBee gateway device

Info

Publication number: CN201479157U
Application number: CN2009201385256U
Authority: CN
Inventors: 王平; 程明传; 施文灶
Original assignee: Fujian Normal University
Current assignee: Fujian Normal University
Priority date: 2009-05-31
Filing date: 2009-05-31
Publication date: 2010-05-19
Anticipated expiration: 2019-05-31

Abstract

The utility model relates to a gateway device which realizes the mutual conversion of a ZigBee protocol and an Ethernet protocol. The gateway device comprises hardware such as a gateway control module, an Ethernet module and a ZigBee module, wherein the ZigBee module and the gateway control module use a serial port communication method, the Ethernet module and the gateway control module use the bus method for communication, the Ethernet module is communicated with a remote PC through a computer network, and the ZigBee module is communicated with ZigBee child nodes through a wireless network. A main software system comprises a coordinating and dispatching sub system, an identity identification sub system, a protocol conversion sub system, a serial port processing sub system, a network remote wake-up sub system, a data storage sub system, a journalizing sub system and an exception handling sub system. All sub systems operate under the control of the coordinating and dispatching sub system. The utility model effectively solves the double-way data transmission problem between the ZigBee network and the Ethernet, and becomes the important networking equipment of the ZigBee network.

Description

A kind of Ethernet type ZigBee gateway apparatus

Technical field

The utility model relates to the ZigBee communications field, specifically is meant the gateway apparatus that a kind of ZigBee of realization agreement and Ethernet protocol are changed mutually.

Background

Gateway is operated in the border of two or more heterogeneous networks, is responsible for the protocol conversion and the data forwarding of network.By the protocol conversion and the packet recombination function of gateway, make to have different communication protocol, can realize two-way communication between two kinds of systems of different hardware environment.Along with the development of ZigBee technology, its application system is more and more, and the demand that ZigBee network and other legacy networks (Ethernet, GPRS/GSM etc.) interconnect is strong day by day.

ZigBee is a kind of self-organizing, low-power consumption, low cost, low rate, short-range radio communication new technology, and its application is: household automation, intelligent medical and Industry Control etc.The physical layer of ZigBee agreement and MAC layer adopt the 802.15.4 agreement, and network layer and application layer standard are formulated by ZigBee alliance.The appearance of ZigBee agreement has promoted the application of radio sensing network.

Ethernet is one of core protocol of local area network (LAN) now, and IEEE 802.3 standards have provided standards such as its physical layer line, the signal of telecommunication and media access layer.In Ethernet, computer adopts CSMA/CD mechanism to obtain channel and communicates.Bridge, switch and router are important networked devices.Countless Ethernets insert Internet by fire compartment wall, and global computer is constituted an integral body in logic.

Because Ethernet has different protocol specifications with ZigBee, the equipment in the ZigBee network just can't with devices communicating in the Ethernet.Solve the communication issue of this heterogeneous network, just need protocol conversion.And also do not have Ethernet type ZigBee gateway at present, make these two kinds of networks to interconnect.

Summary of the invention

At above-mentioned problem, the purpose of this utility model combines embedded software technology and protocal analysis technology exactly, makes up a kind of Ethernet type ZigBee gateway apparatus.Utilize this device, solved ZigBee network and the Ethernet problem that interconnects, ZigBee equipment can be communicated by letter smoothly with ethernet device.

For achieving the above object, the technical solution of the utility model is: Ethernet type ZigBee gateway apparatus comprises gateway control module, ethernet module and ZigBee module on the hardware.Use the serial communication mode between ZigBee module and the gateway control module; Ethernet module uses bus mode to communicate by letter with the gateway control module; Ethernet module is communicated by letter with long-range PC by computer network; The ZigBee module is communicated by letter with the ZigBee child node by wireless network.The function that realizes is to give the ZigBee module for the data forwarding of ethernet module or ethernet module the data forwarding of ZigBee module under the control of gateway control module.

Wherein said gateway control module is made up of 32 8-digit microcontrollers (MCU) and storage chip (FLASH and SDRAM), and 32 8-digit microcontrollers link to each other by bus mode with storage chip;

Described ethernet module comprises ethernet controller and Ethernet interface, and ethernet controller links to each other with Ethernet interface, and ethernet controller links to each other with the gateway control module;

Described ZigBee module comprises that 8 8-digit microcontrollers link to each other with the ZigBee transceiver, and 8 8-digit microcontrollers link to each other by serial ports with the gateway control module.Ethernet interface links to each other by Internet with long-range PC; The ZigBee transceiver links to each other by wireless mode with ZigBee.

Main software systems comprise: coordination scheduling subsystem, authentication subsystem, protocol conversion subsystem, serial ports processing subsystem, network remote wakeup subsystem, data storage subsystem, journalizing subsystem and abnormality processing subsystem.Each subsystem moves under the control of coordination scheduling subsystem.Remote monitoring center links to each other with the authentication subsystem by the Internet, after user's identity and authority are by checking, can obtain the corresponding service of gateway and authority.Obtainable gateway service comprises: receive the ZigBee network data, send configuration instruction configures ZigBee network, management serial ports parameter, check daily record, configuration store parameter and Remote Wake Up.

The processing method of the protocol conversion of Ethernet type gateway is:

When 1) the ZigBee node transmits data to long-range PC by gateway, change the process of Ethernet protocol through the ZigBee agreement, detailed process is as follows: the data that receive the ZigBee network; Remove the frame head of ZigBee physical layer; Remove the frame head of ZigBee MAC layer; Remove the frame head of ZigBee network layer; Add the packets headers of the physical layer of Ethernet; Add the TCP/IP packets headers; Data are sent to long-range PC.

When 2) long-range PC transmits data to the ZigBee node by gateway, change the process of ZigBee agreement through Ethernet protocol, detailed process is as follows: the data of receiving remote PC; Remove the Ethernet packets headers; Remove the TCP/IP packets headers; Add the frame head of ZigBee network layer; Add the frame head of ZigBee MAC layer; Add the frame head of ZigBee physical layer; Data are sent to specified node in the ZigBee network.

The utility model has effectively solved the problem of ZigBee agreement and Ethernet protocol conversion, make the ZigBee network by gateway can with the Ethernet swap data.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing

Fig. 1 is the hardware configuration schematic diagram of Ethernet type ZigBee gateway apparatus.

Fig. 2 is the protocol conversion model of Ethernet type ZigBee gateway apparatus.

Fig. 3 is the function diagram of Ethernet type ZigBee gateway apparatus.

Embodiment

For the more detailed description native system, in conjunction with the accompanying drawings specific implementation process is explained as follows.

In Fig. 1: the 100th, net type ZigBee gateway too, the 101st, the ZigBee module section of gateway, the 102nd, ZigBee radio frequency chip, the 103rd, ZigBee node, the 104th, gateway control module, the 105th, the ethernet module of gateway, the 106th, Ethernet interface, the 107th, long-range PC.Ethernet type ZigBee gateway (100) comprises gateway control module (104), ZigBee module (101) and ethernet module (105) three parts, and wherein ZigBee module (101) contains 8-bit microprocessor and ZigBee transceiver (102); Ethernet module (105) contains ethernet controller and Ethernet interface (104); Gateway control module (104) comprises 32 8-digit microcontrollers and storage chip (FLASH and SDRAM).ZigBee module (101) and gateway control module (104) are used the serial communication mode.Ethernet module (105) uses bus mode to communicate by letter with gateway control module (104).

Among Fig. 2, the 200th, protocol conversion subsystem, the 201st, ZigBee agreement subsystem, the 202nd, Ethernet protocol subsystem.

Among Fig. 3, the 300th, coordination scheduling subsystem, the 301st, the authentication subsystem, the 302nd, the protocol conversion subsystem, the 303rd, data transmit-receive subsystem, the 304th, serial ports processing subsystem, the 305th, network remote wakeup subsystem, the 306th, data storage subsystem, the 307th, abnormality processing subsystem, the 308th, journalizing subsystem.

Claims

1. Ethernet type ZigBee gateway apparatus, it is characterized in that comprising on this device hardware gateway control module, ethernet module and ZigBee module, ZigBee module and gateway control module are used the serial communication mode, ethernet module uses bus mode to communicate by letter with the gateway control module, ethernet module is communicated by letter with long-range PC by computer network, and the ZigBee module is communicated by letter with the ZigBee child node by wireless network.

2. Ethernet type ZigBee gateway apparatus as claimed in claim 1 is characterised in that described gateway control module is made up of 32 8-digit microcontroller MCU and storage chip FLASH and SDRAM, and 32 8-digit microcontrollers link to each other by bus mode with storage chip.

3. Ethernet type ZigBee gateway apparatus as claimed in claim 1 is characterised in that described ethernet module comprises ethernet controller and Ethernet interface, and ethernet controller links to each other with Ethernet interface, and ethernet controller links to each other with the gateway control module.

4. Ethernet type ZigBee gateway apparatus as claimed in claim 1, be characterised in that described ZigBee module comprises that 8 8-digit microcontrollers link to each other with the ZigBee transceiver, 8 8-digit microcontrollers link to each other by serial ports with the gateway control module, and Ethernet interface links to each other by Internet with long-range PC; The ZigBee transceiver links to each other by wireless mode with ZigBee.