CN204168293U

CN204168293U - A kind of Satellite Road is by decision device

Info

Publication number: CN204168293U
Application number: CN201420681922.9U
Authority: CN
Inventors: 康小勇; 杨晓婧; 齐海勇; 郜扬子
Original assignee: BEIJING GUOJIAO XINTONG TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: BEIJING GUOJIAOXINTONG TECHNOLOGY DEVELOPMENT CO., LTD.
Priority date: 2014-11-14
Filing date: 2014-11-14
Publication date: 2015-02-18
Anticipated expiration: 2024-11-14

Abstract

The utility model provides a kind of Satellite Road by decision device, comprises, and the first network card chip, is connected with analog switch; Second network card chip, is connected with VSAT network interface, for gathering the signal strength signal intensity of VSAT satellite; Controller, the first network card chip, the second network card chip and analog switch, compare according to VSAT satellite-signal intensity and threshold value, sends control command to described analog switch; Analog switch, is connected between the first network card chip and router network interface, according to control command conducting or the data communication between shutoff the first network card chip and router network interface.By the route judgement device of above-described embodiment, can select to carry out route handoff between the high marine satellite of communication cost price and the VSAT satellite of relative low price, achieve the expense reducing overocean communications, and ensure that the continuity of communication.

Description

A kind of Satellite Road is by decision device

Technical field

The utility model relates to communication technical field, particularly relates to communication technical field about a kind of satellite the utility model, particularly about a kind of Satellite Road by decision device.

Background technology

Marisat system (system of maritime satellite communications) uses communication satellite as the marine radio communication system of relay station, be characterized in that quality is high, capacity is large, can global, round-the-clock, full-time communication.In 1976, the first backward Atlantic Ocean, Pacific and Indian oceans overhead transmitted three maritime communication satellites in the U.S., and establish first maritime satellite communications station in the world, main capacity services is in naval.In July, 1979, International Maritime Satellite Organization set up, and established International Maritime Satellite Communication system in nineteen eighty-two, became first generation International Maritime Satellite Communication system.

Marisat system is made up of communication satellite, bank station and ship station three parts.1. maritime communication satellite, it is the relay station of system, in order to the signal at sending and receiving bank station and ship station.Satellite is laid in the Pacific Ocean, the Atlantic Ocean and oceanic province, three, the Indian Ocean, and adopt satellite, satellite can provide phone, telegram, fax and shared call service.2. bank station, it is the maritime satellite communications earth station established by the sea, and play the control action of communication network, be provided with the equipment such as antenna, base station can be connected with other communication networks land.3. ship station, it is the maritime satellite communications earth station filled aboard ship, is the communication terminal of system, is equipped with the equipment such as parabolic antenna, and telephone communication adopts mode of frequency regulation, and telegraph communication adopts phase shift keying modulation mode.The distribution of the message capacity of every communication satellite is by specifying the network coordinating station of bank station to be responsible for distributing satellite communication channel.Telegraph channel is allocated in advance to each bank station, is responsible for distributing the time slot carrying out telegraph communication with ship station by it.Telephone channel is controlled by network coordinating station, is undertaken applying for rear distribution by ship station, bank station.

Marine satellite has become indispensable as the communications conduit of operation on the sea or ship, but due to the communications cost of marine satellite be all with flow rate calculation, one of expensive shortcoming also becoming marine satellite of its communications cost.

Utility model content

Costly in order to solve maritime satellite communications in prior art, but the problem that operation at sea must communicate again proposes a kind of Satellite Road by decision device, can automatically or the VSAT satellite of artificial selection expense relative moderate communicate.

The utility model embodiment provides a kind of Satellite Road by decision device, comprises,

First network card chip, is connected with analog switch;

Second network card chip, is connected with VSAT network interface, for gathering the signal strength signal intensity of VSAT satellite;

Controller, connects described first network card chip, described second network card chip and analog switch respectively, compares, send control command to described analog switch according to described VSAT satellite-signal intensity and threshold value;

Described analog switch, is connected between described first network card chip and router network interface, according to described control command conducting or the data communication that turns off between described first network card chip and router network interface.

A kind of Satellite Road according to the utility model embodiment is by a further aspect of decision device, also comprise: switch, be connected between described analog switch and described router network interface, for remaining the power supply of the network interface carrying out data communication with described router.

By the route judgement device of above-described embodiment, can select to carry out route handoff between the high marine satellite of communication cost price and the VSAT satellite of relative low price, achieve the expense reducing overocean communications, and ensure that the continuity of communication.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.In the accompanying drawings:

Figure 1 shows that the structural representation of the utility model embodiment route judgement device inside.

Embodiment

For making the object of the utility model embodiment, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the utility model embodiment is described in further details.At this, schematic description and description of the present utility model for explaining the utility model, but not as to restriction of the present utility model.

Know-why of the present utility model is: Satellite Road is based on arm hardware platform and (SuSE) Linux OS by decision device route judgement device, by the signal strength signal intensity (E of the miniature earth station of Real-time Collection or small global station (VSAT) satellite _b/ N ₀) value, and be connected to VSAT satellite or marine satellite according to the signal strength values control router switching of VSAT satellite.When the signal strength signal intensity of VSAT satellite exceedes threshold value (being such as 4dB), control router switching and be connected to VSAT satellite; When the signal strength signal intensity of VSAT satellite is lower than threshold value (being such as 4dB), controls router switching and be connected to marine satellite.

Below in conjunction with a specific embodiment, the utility model is specifically described, but it should be noted that this specific embodiment is only to describe the utility model better, do not form improper restriction of the present utility model.

First network card chip 102, is connected with analog switch 104;

Second network card chip 103, is connected with VSAT network interface 107, for gathering the signal strength signal intensity of VSAT satellite;

Controller 101, connects the first network card chip 102 and the second network card chip 103 respectively, compares, send control command to analog switch 104 according to described VSAT network signal intensity and threshold value;

Analog switch 104, is connected between the first network card chip 102 and router network interface 106, according to described control command conducting or the data communication between shutoff the first network card chip and router network interface 106.

A kind of Satellite Road according to the utility model embodiment, by a further aspect of decision device, also comprises:

Switch 105, is connected between described analog switch and router network interface 106, for remaining the power supply of the network interface carrying out data communication with described router.

Be illustrated in figure 1 the structural representation of the utility model embodiment route judgement device inside, comprising controller 101, first network card chip 102, second network card chip 103, network card chip in route judgement device 401 and also there is between the port of networking an analog switch 104, switch 105, router network interface 106, VSAT network interface 107, these chips all have concrete chip model (such as, the manufacturer of analog switch 104 is Texas Instruments, model is TS3L110D, first network card chip and the second network card chip model are DM9000CIEP, exchanger chip model is KSZ8895, controller model S3C3440), the service behaviour of other chips and characteristic all can with reference to correlation technique files.

Described controller 101 connects the first network card chip 102 and the second network card chip 103 respectively, analog switch 104 is connected between the first network card chip 102 and switch 105, described switch 105 is connected with router network interface 106, described VSAT network interface 107 is connected with described second network card chip 103, described controller 101 is connected by I/O interface with described analog switch 104, for arranging the on off operating mode of described analog switch 104.

Wherein, VSAT network interface 107 receives the signal strength signal intensity that VSAT modulator-demodulator transmits, controller 101 is sent to by the second network card chip 103, described controller 101 according to described signal strength signal intensity compared with decision threshold, if be greater than described decision threshold, the state of described analog switch 104 is set, analog switch 104 is made up of the TL3S110 chip of maturation as shown in FIG., it can realize the on-off of data message by the mode arranging low and high level, it is high level conducting that such as controller 101 arranges described TL3S110 chip by pin, then described analog switch 104 transmits the data between the first network card chip 102 and switch 105, if be set to low level cut-off, then described analog switch 104 stops the data between transmission first network card chip 102 and switch 105 (just to stop transmitting data, physical link does not cut off).

The router be connected with router network interface 106 orders to detect whether have data communication between the first network card chip 102 by ping order or other, and the controller 101 in satellite decision device drags down by drawing high the break-make that its corresponding IO pin carrys out control simulation switch.When there being data communication, described router can select VSAT satellite routing table, thus connects VSAT satellite, and when not having data communication, described router can select marine satellite routing table, thus connects marine satellite.The effect that described analog switch 104 now plays is and according to the control of controller 101, router is adopted to be connected with which satellite and to communicate.Specifically, when the signal strength values of VSAT satellite exceedes threshold value, the IO pin of controller 101 is high level, analog switch 104 is high level, then router ping order success, analog switch is opened for conducting state, and now router sets up the communication connection with VSAT satellite; When the signal strength values of VSAT satellite is less than threshold value, the IO pin of controller 101 is low level, analog switch 104 is low level, then router ping order is unsuccessful, analog switch cuts out and is off state, now router sets up the communication connection with marine satellite, and switch 105 is connected with analog switch 104 and router network interface 106 respectively, carries out continued power to router network interface 106.

By the route judgement device of above-described embodiment, can select to carry out route handoff between the high marine satellite of communication cost price and the VSAT satellite of relative low price, achieve the expense reducing overocean communications, and ensure that the continuity of communication; By keeping the power supply to the network port always in the process of carrying out Route Selection, there will not be when ensure that and again enable this network port and start failed situation, ensure that the reliability of communication.

Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiment of the utility model; and be not used in restriction protection range of the present utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.

Claims

1. Satellite Road is by a decision device, it is characterized in that, comprising:

First network card chip, is connected with analog switch;

2. Satellite Road according to claim 1 is by decision device, it is characterized in that, also comprises:

Switch, is connected between described analog switch and described router network interface, for remaining the power supply of the network interface carrying out data communication with described router.