CN203406897U

CN203406897U - Data concentrator

Info

Publication number: CN203406897U
Application number: CN201320402544.1U
Authority: CN
Inventors: 李旭阳; 马亮; 林锥
Original assignee: BEIJING JINGYI RENEWABLE ENERGY ENGINEERING CO LTD
Current assignee: BEIJING JINGYI RENEWABLE ENERGY ENGINEERING CO LTD
Priority date: 2013-07-08
Filing date: 2013-07-08
Publication date: 2014-01-22
Anticipated expiration: 2023-07-08

Abstract

Provided is a data concentrator including an ARM processor, an FPGA chip, an ethernet chip, an RS485 chip, a peripheral circuit, an ethernet interface, and a plurality of RS485 serial bus communication interfaces, wherein the RS485 chip is respectively connected with the RS485 serial bus communication interfaces and the FPGA chip, the ethernet chip is respectively connected with the ARM processor and the ethernet interface, the peripheral circuit is respectively connected with the ARM processor and the FPGA chip, and the ARM processor and the FPGA chip are connected via a parallel bus. The data concentrator is provided with 32 groups of RS485 serial bus communication interfaces to facilitate the send-back of the data to a monitoring center, thereby greatly enhancing the reliability and real-time property.

Description

A kind of data concentrator

Technical field

The utility model relates to a kind of switching equipment, is specifically related to a kind of data concentrator.

Background technology

Data concentrator is that a side connects many lambda lines and at opposite side, connects a kind of switching equipment of a small amount of service circuit, and one side is a plurality of slave computer equipment of access, and opposite side connects long-range host computer server.Slave computer equipment comprises photovoltaic DC-to-AC converter, header box, and environment detector etc., the said equipment is connected with data concentrator by communication board separately.As environment detector, be used for gathering the data such as ambient temperature, humidity, solar irradiance, wind speed and direction, and these data are passed to data concentrator, data concentrator is responsible for the operational factor of all devices and environmental parameter to send to the host computer of remote monitoring center.

Data concentrator generally adopts single-chip microcomputer as processing unit at present, realization is to the collection of signal and data and concentrated, owing to being subject to performance and the resource limitation of single-chip microcomputer micro-chip processor, the multipotency of existing single-chip microcomputer micro-chip processor provides 7 interfaces, if adopt serial port extended chip to carry out serial ports expansion, because being subject to the restriction of processing speed and the baud rate of microprocessor itself, also can only expand a small amount of and limited interface, can not tackle the problem at its root.Single-chip microcomputer micro-chip processor can not effectively be managed and store a large amount of collected data simultaneously, causes poor reliability, and later maintenance is inconvenient.In addition, existing data concentrator is generally by general packet radio service technology (General Packet Radio Service, GPRS) module or RS485 interface turn ethernet module by the data back Surveillance center gathering, poor reliability, and real-time is not strong.

Utility model content

The purpose of this utility model is to provide a kind of data concentrator, and to solve, above-mentioned available data concentrator interface is less, the problem of the poor reliability of data management and storage.

Technical scheme is as follows:

, comprise peripheral circuit, arm processor, fpga chip, Ethernet chip, RS485 chip, the Ethernet interface for supporting each component working and organize RS485 serial bus communication interfaces more, wherein,

Described RS485 chip is connected with described fpga chip with described RS485 serial bus communication interfaces respectively, and described RS485 serial bus communication interfaces is for realizing the connection between described data concentrator and slave computer equipment;

Described Ethernet chip is connected with described Ethernet interface with described arm processor respectively, and described Ethernet interface is for realizing being connected between the host computer of described data concentrator and Surveillance center, by Surveillance center described in data back;

The described arm processor being connected is connected with described peripheral circuit respectively with described fpga chip.

Further: between described arm processor and described fpga chip, by parallel bus, to be connected.

Further: also comprise optical fiber interface, described optical fiber interface is connected with optical transmitter, optical receiver and described fpga chip respectively.

Further: also comprise serial ports, described serial ports is connected with described arm processor by level transferring chip.

Further: described optical fiber interface is two-way, described serial ports is two-way.

Further: also comprise display screen, described display screen is connected with driving the described arm processor of its demonstration.

Further: described arm processor is ARM9 processor A T91RM9200, and the model of described fpga chip is EP2C50F484C8N, and the model of described Ethernet chip is RTL8305SB.

Further: described display screen is LCD liquid crystal dot matrix display screen.

Further: described level transferring chip is 232 level transferring chip MAX232.

Further: the model of described optical transmitter is HFBR1412, the model of described optical receiver is HFBR2412.

The beneficial effects of the utility model are:

1, the utility model adopts field programmable gate array (Field-Programmable Gate Array, FPGA) to carry out hardware programming expansion, and 32 groups of RS485 serial bus communication interfaces can be provided.

2, the utility model adopts arm processor, carries standard ethernet interface, facilitates image data concentrator by data back Surveillance center, reliability and real-time strengthen greatly, realize data-signal long transmission distance, antijamming capability is strong, can be used under rugged environment;

Arm processor can also adopt database schema to carry out store and management to mass data, easy to maintenance, in the situation that network breaks down, data can be stored, and can not lose, and can reconnect with host computer intelligence.

Accompanying drawing explanation

The structural representation of data concentrator in Fig. 1 embodiment 1;

The structural representation of data concentrator in Fig. 2 embodiment 2.

Embodiment

Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the utility model in detail.

Embodiment 1

As shown in Figure 1, a kind of data concentrator, comprising: arm processor 1, fpga chip 2, Ethernet chip 3, RS485 chip 4, peripheral circuit 5, Ethernet interface 6 and organize RS485 serial bus communication interfaces 7 more, wherein:

RS485 chip 4 is connected with fpga chip 2 with RS485 serial bus communication interfaces 7 respectively, RS485 serial bus communication interfaces 7 is coordinated and is realized by RS485 chip 4 and fpga chip 2,32 groups of RS485 serial bus communication interfaces 7 can be provided, and RS485 serial bus communication interfaces 7 is for realizing the connection between data concentrator and slave computer equipment;

Ethernet chip 3 is connected with Ethernet interface 6 with arm processor 1 respectively, and Ethernet interface 6 coordinates Ethernet chip 3 to realize by arm processor 1; Ethernet interface 6 is connected ，Jiang data back Surveillance center for realizing between the host computer of data concentrator and remote monitoring center;

Peripheral circuit 5 comprises crystal oscillator, power supply, random asccess memory (random access memory, RAM), FLASH memory, FPGA configuring chip, and the annexation between each parts of peripheral circuit is prior art; Peripheral circuit 5 is connected with fpga chip 2 with arm processor 1 respectively;

Between arm processor 1 and fpga chip 2, by parallel bus, be connected.

Preferably, arm processor 1 is ARM9 processor A T91RM9200, and the model of fpga chip 2 is EP2C50F484C8N, and the model of Ethernet chip 3 is RTL8305SB.

Embodiment 2

As shown in Figure 2, a kind of data concentrator, comprise: arm processor 1, fpga chip 2, Ethernet chip 3, RS485 chip 4, peripheral circuit 5, Ethernet interface 6, organize RS485 serial bus communication interfaces 7, two-way optical fiber interface 8, two-way serial ports 9 and display screen 10 more, wherein:

Ethernet chip 3 is connected with Ethernet interface 6 with arm processor 1 respectively, and Ethernet interface 6 coordinates Ethernet chip 3 to realize by arm processor 1; Ethernet interface 3 is connected ，Jiang data back Surveillance center for realizing between the host computer of data concentrator and remote monitoring center;

Peripheral circuit 5 comprises crystal oscillator, power supply, random asccess memory (random access memory, RAM), FLASH memory, FPGA configuring chip, level transferring chip, optical transmitter and optical receiver, the annexation between each parts of peripheral circuit is prior art; Peripheral circuit 5 is connected with fpga chip 2 with arm processor 1 respectively;

Between arm processor 1 and fpga chip 2, by parallel bus, be connected;

Display screen 10 is connected with the I/O pin of arm processor 1, is responsible for driving showing, for showing the service data of each pv grid-connected plant by arm processor 1;

Level transferring chip is connected with arm processor 1 with serial ports 9 respectively, and serial ports 9 is coordinated and realized by level transferring chip and arm processor 1;

Optical fiber interface 8 is connected with optical transmitter, optical receiver and fpga chip 2 respectively, and optical fiber interface 8 is coordinated and realized by optical transmitter, optical receiver and fpga chip 2.

Preferably, arm processor 1 is ARM9 processor A T91RM9200, the model of fpga chip 2 is EP2C50F484C8N, the model of Ethernet chip 3 is RTL8305SB, display screen 10 is LCD liquid crystal dot matrix display screen, level transferring chip is 232 level transferring chip MAX232, and the model of optical transmitter is HFBR1412, and the model of optical receiver is HFBR2412.

Claims

1. a data concentrator, comprises for supporting the peripheral circuit of each component working, it is characterized in that, also comprises: arm processor, fpga chip, Ethernet chip, RS485 chip, Ethernet interface and organize RS485 serial bus communication interfaces more, wherein,

2. data concentrator as claimed in claim 1, is characterized in that, between described arm processor and described fpga chip, by parallel bus, is connected.

3. data concentrator as claimed in claim 2, is characterized in that, also comprises optical fiber interface, and described optical fiber interface is connected with optical transmitter, optical receiver and described fpga chip respectively.

4. data concentrator as claimed in claim 3, is characterized in that, also comprises serial ports, and described serial ports is connected with described arm processor by level transferring chip.

5. data concentrator as claimed in claim 4, is characterized in that, described optical fiber interface is two-way, and described serial ports is two-way.

6. data concentrator as claimed in claim 4, is characterized in that, also comprises display screen, and described display screen is connected with driving the described arm processor of its demonstration.

7. data concentrator as claimed in claim 1, is characterized in that, described arm processor is ARM9 processor A T91RM9200, and the model of described fpga chip is EP2C50F484C8N, and the model of described Ethernet chip is RTL8305SB.

8. data concentrator as claimed in claim 6, is characterized in that, described display screen is LCD liquid crystal dot matrix display screen.

9. data concentrator as claimed in claim 4, is characterized in that, described level transferring chip is 232 level transferring chip MAX232.

10. data concentrator as claimed in claim 3, is characterized in that, the model of described optical transmitter is HFBR1412, and the model of described optical receiver is HFBR2412.