CN203313202U

CN203313202U - Network communication concentrator

Info

Publication number: CN203313202U
Application number: CN2013203001505U
Authority: CN
Inventors: 郭凌; 黄庆国; 路怀民; 高涛; 刘凌; 邓昌贵; 陈光钊; 易启付; 周鹏
Original assignee: Logistical Engineering University of PLA
Current assignee: Logistical Engineering University of PLA
Priority date: 2013-05-28
Filing date: 2013-05-28
Publication date: 2013-11-27
Anticipated expiration: 2023-05-28

Abstract

The utility model relates to a communication device, and specifically discloses a network communication concentrator. The network communication concentrator comprises a case and a CPU arranged inside the case. The CPU is electrically connected with an ARM interface, an uplink interface, a plurality of downlink interfaces and an infrared communication interface. The uplink interface is a network communication interface, and the plurality of downlink interfaces are RS485 communication interfaces. According to the utility model, the network communication concentrator is provided with multiple communication interfaces, and can communicate with equipment having an RS485 interface with stable communication performance, meeting the real-time requirement.

Description

The network service concentrator

Technical field

The utility model relates to a kind of communication equipment, relates in particular to a kind of Net MUX.

Background technology

Concentrator (Concentrator) is centre management equipment and the control appliance of remote auto meter reading system, be responsible for regularly order transmission, data communication, network management, the logout of reading terminals data, system, the functions such as lateral transport of data, be a kind of be again the most frequently used transponder at present special the time.Existing concentrator must be connected with its user by logic control interface unit and special line, and its installation cost is higher, and the number of users of controlling is very limited.The more important thing is, what existing concentrator generally adopted is single GPRS communication, some technical problems due to GPRS communication existence itself, such as: the working temperature of GPRS chip, the temperature of site environment, humidity, unstable, the problems such as the signal power of GPRS own is inconsistent, Information Mobile Service main station failure of GPRS draw-in groove contact, cause the uplink communication of concentrator often to occur going offline, the communication interrupt that causes concentrator and main website, can not well meet the requirement of real-time of communicating by letter.

The utility model content

The purpose of this utility model is, proposes a kind of network service concentrator, and it is provided with multiple communication interface, can with any devices communicating with the RS485 interface, and communication performance is stable, meets the requirement of real-time.

For achieving the above object, the utility model provides a kind of network service concentrator, it comprises: cabinet and be located at the CPU in cabinet, described CPU is electrically connected with an ARM interface, upstream Interface, several downstream interface and infrared communication interface respectively, this upstream Interface is network communication interface, and this downstream interface is the RS485 communication interface.

In the utility model, described several downstream interfaces comprise two RS485 communication interfaces.

Wherein, described CPU is electrically connected with memory, and this memory is electrically connected with the communications status indicator light.

Moreover described CPU also is electrically connected with the demonstration module.

Simultaneously, described CPU also is electrically connected with buzzer, and this buzzer one end and infrared communication interface are electrically connected.

Further, described CPU also is electrically connected with the radio-frequency card interface.

In addition, in described cabinet, also be provided with an AC/DC converter, this AC/DC converter one end is electrically connected with a power input of being located on cabinet, and its other end and CPU are electrically connected.

Network service concentrator of the present utility model, its network parameter configuration is simple, after the server ip change, without revising the concentrator network parameter, make the network parameter setting of concentrator very simple, reduced the construction debugging difficulty of engineering, communication performance is comparatively stable; The communication link interface parameter that it has the self adaptation field apparatus, can articulate any RS485 communication equipment; Simultaneously, but its storage protocol data also realize that concentrator gathers automatically, thereby, to fault and state Real-time Collection, are convenient to timely collecting device fault or state, the data timing collection.

The accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the modular structure schematic diagram of a kind of specific embodiment of network service concentrator in the utility model;

Fig. 2 is the schematic network structure of a kind of specific embodiment of the utility model network service concentrator in concrete application.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making under the creative work prerequisite the every other embodiment obtained, and all belong to the scope of the utility model protection.

As shown in Figure 1, the utility model provides a kind of network service concentrator, it comprises: cabinet 10 and be located at the CPU20 in cabinet 10, described CPU20 is electrically connected with an ARM interface 21, upstream Interface, several downstream interface and infrared communication interface 22 respectively, this upstream Interface is network communication interface 23, and this downstream interface is RS485 communication interface 24.The utility model is provided with multiple communication interface, can with any devices communicating with the RS485 interface, and communication performance is stable, meets the requirement of real-time.

In the utility model specific embodiment, described cabinet 10 can adopt IP68 classification of waterproof design, is applicable to more severe operational environment, and this cabinet 10 should be arranged on ventilations, shady and cool place, and installation is stressed that enough intensity should be arranged for it.Described CPU20 can select 32 ARM7 kernel CPU.In this CPU20, include mode of operation and select logic and passage arbitrated logic.

Wherein, described ARM interface 21 is for optional external ARM unit, this ARM interface 21 is with external ARM unit communication and to this ARM unit power supply, and ARM equipment is equivalent to the background server on a playscript with stage directions ground, be used to realizing the demonstration of local control or state, fault message.Network service concentrator of the present utility model can provide a transparent forwarding and control command issuing mechanism for background server and local ARM equipment, and background server or ARM equipment can be directly and field device communicating, directly collection site device data.This network service concentrator also can provide an intercommunication mechanism for background server and ARM equipment, make background server can with the direct communication of ARM equipment, mutual configuration, historical data etc.As: backstage can configure the coding of the equipment of ARM equipment demonstration, or calls the historical data of ARM equipment, or: ARM equipment also can call the historical data on backstage, is convenient to this locality and checks demonstration etc.

The remote controller signal of the compatible 38KHz modulation communication of infrared communication interface 22 and NEC coding standard.38KHz can be used for the copy reading of infrared palm computer, controls field apparatus.NEC coding standard can be used for remote controller (supporting at random) and arranges, checks this network service concentrator mode of operation, network MAC address, local ip address etc.

Several downstream interfaces in the utility model comprise two RS485 communication interfaces 24, and these two RS485 communication interfaces 24 are be used to articulating user's field apparatus, as water meter, ammeter etc.Described CPU20 also is electrically connected with memory 25, and this memory 25 is electrically connected with communications status indicator light 26.This memory 25 can be selected the 64K memory, with be used to storing the protocol data of field apparatus, the real-time status of the continuous collection site equipment of CPU20, real time fail or other data, and the data of collection are uploaded to background server by network communication interface 23, and upload to the ARM channel by ARM interface 21.Concrete, in this memory 25, include three data fields: fault collection agreement district, state acquisition agreement district and data acquisition protocol district, fault and state Real-time Collection, be convenient to timely collecting device fault or state, and the data timing collection.

Moreover CPU20 of the present utility model also is electrically connected with and shows module 27.This demonstration module 27 can adopt LED to show, for demonstration, content and prompting is set.Described communications status indicator light 26 is for the reiving/transmitting state of display communication passage, and when transceiving data, corresponding indicator light flicker, facilitate the on-scene communication debugging.Simultaneously, described CPU20 also is electrically connected with buzzer 28, and these buzzer 28 1 ends and infrared communication interface 22 are electrically connected.

Further, as a kind of embodiment that selects of the present utility model, described CPU20 also is electrically connected with radio-frequency card interface 29, and this radio-frequency card interface 29 is used as spare interface.

In addition, in described cabinet 10, also be provided with an AC/DC converter 12, these AC/DC converter 12 1 ends are electrically connected with a power input (not shown) of being located on cabinet 10, and its other end and CPU20 are electrically connected.

As shown in Figure 2, be a kind of schematic network structure of the utility model network service concentrator 30 in concrete application.These several network service concentrators 30 access Internet network 40 by netting twine, and realize communication connection with server 50, this server 50 can be one, also can be a plurality of (as: data reception servers, a Control Server), but the data that network service concentrator 30 is uploaded only send to data server, the server 50 of last configuration network communication concentrator 30 acquisition protocols is the data server of concentrator acquiescence.Each network service concentrator 30 all can articulate by RS485 communication interface 24 field apparatuss such as ammeter 31, water meter 32, water valve 33 and temperature-humidity monitoring instrument 34.Network service concentrator 30 gathers data, state, the trouble light information of above-mentioned field apparatus automatically, upload onto the server 50, in a local area network (LAN), the IP address of all network equipments (comprising network service concentrator 30, other work active computers) must be unique, therefore, the IP of network service concentrator 30 must be arranged in the IP address of network manager's distribution.Data feedback channel in the utility model can adopt towards connectionless UDP procotol, network service concentrator 30 automatic Memory protocol datas are initiated source, the change of server 50IP (reassigning as server) and network service concentrator 30 configuration-independents, network parameter configuration without the mounted network service concentrator 30 of change after the change of the IP at server 50, make the network parameter setting of network service concentrator 30 very simple, reduced the construction debugging difficulty of engineering.Simultaneously, in the process with field device communicating, network service concentrator 30 can be according to the attribute of field apparatus, automatically adapt to the communication link interface parameter (baud rate, effect position) of field apparatus, therefore, network service concentrator 30 of the present utility model can with any devices communicating with the RS485 interface.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.

Claims

1. network service concentrator, comprise cabinet and be located at the CPU in cabinet, it is characterized in that, described CPU is electrically connected with an ARM interface, upstream Interface, several downstream interface and infrared communication interface respectively, this upstream Interface is network communication interface, and this downstream interface is the RS485 communication interface.

2. network service concentrator as claimed in claim 1, is characterized in that, described several downstream interfaces comprise two RS485 communication interfaces.

3. network service concentrator as claimed in claim 1, is characterized in that, described CPU is electrically connected with memory, and this memory is electrically connected with the communications status indicator light.

4. network service concentrator as claimed in claim 1, is characterized in that, described CPU also is electrically connected with the demonstration module.

5. network service concentrator as claimed in claim 1, is characterized in that, described CPU also is electrically connected with buzzer, and this buzzer one end and infrared communication interface are electrically connected.

6. network service concentrator as claimed in claim 1, is characterized in that, described CPU also is electrically connected with the radio-frequency card interface.

7. network service concentrator as claimed in claim 1, is characterized in that, in described cabinet, also is provided with an AC/DC converter, and this AC/DC converter one end is electrically connected with a power input of being located on cabinet, and its other end and CPU are electrically connected.