CN102306165A - Ship electronic chart data multi-platform shared service device and construction method thereof - Google Patents
Ship electronic chart data multi-platform shared service device and construction method thereof Download PDFInfo
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Abstract
The invention discloses a ship electronic chart data multi-platform shared service device and a construction method thereof. A server of the device is based on a Linux system and comprises a database for storing an electronic chart, an orthogonal-list-based electronic chart management module, an automatic electronic chart correction module, an information communication module and a data transmission module; and a display and information client is realized on the basis of a Windows system, a Vxworks system and the Linux system, and an electronic chart search module is embedded into the client. The method comprises the following steps of: configuring the server in the Linux system, establishing a display and information client system for different operating systems, inputting the search condition by using the electronic chart search module embedded into the client, searching the chart from the server and downloading to the client. The device is favorable for the centralized and unified management of electronic chart data, and a client system can quickly and accurately download and update the electronic chart data.
Description
Technical field
The invention belongs to areas of information technology, multi-platform share service device of particularly a kind of boats and ships electronic chart data and construction method thereof.
Background technology
Electronic chart is to authorize distribution by country, on content, structure and form, by required standard, supplies the electronic chart data of all kinds of Electronic Chart Application System uses.At present, the exploitation of electronic chart and application system thereof was the hot issue of contemporary navigation area research with using, and China's ship for civil use began development and equipment electronic chart system in 1993.For many years, research emphasis concentrates on making and issue, sea chart content displayed and effect and the electronic chart of the electronic chart aspects such as influence to navigation safety always.But, exposed following problem at aspects such as the use of electronic chart data, service, maintenance and managements along with the application of electronic chart is increasingly extensive:
Aspect the use of electronic chart data, see that (1) electronic chart task mission is comparatively single at present, only limits to the navigating officer and carries out digitizing navigation operation, only satisfies the navigation needs from the function of electronic chart.
(2) aspect the electronic chart data, services; Along with aspects such as radar sailing situation synthesis display, the planning of navigation safeguards system safety fairway propose the user demand of electronic chart information, the electronic chart system has demonstrated the public information resource attribute that multitask, multi-user use simultaneously.But the electronic chart system task is single, and the weak characteristics of service ability can not satisfy the development need of modernized boats and ships.
(3) aspect the electronic chart data maintenance, along with the increase of electronic chart application demand, the user increases and has the electronic chart of different internal formats separately, causes the form of each user's electronic chart data inconsistent; In addition; After the electronic chart Data Loading arrives each user, the function that only has the navigating officer related content in the electronic chart to be made amendment according to notices to mariners, so each user can use the not old figure through correcting; There is potential safety hazard, uses the electronic chart accuracy to guarantee.
(4) aspect the electronic chart data management, along with the continuous increase of electronic chart application demand, the user is also increasing, and the user uses the source of electronic chart to have nothing in common with each other at present, and it is many electronic chart data class to have occurred, problems such as data standard disunity.
The applicable cases of correlation technique:
Publication number is that the Chinese patent " city spacing information sharing platform " of 101431461A is at the disclosed city spacing information sharing platform of 2009-5-13; Comprise public information network, spatial information exchange network, multi-level network management structure and mechanism etc., but this invention application has only solved the sharing problem of information.In the system architecture of the disclosed data sharing platform of 2009-8-5 based on SOA, main effect is the load that reduces application server to the Chinese patent of publication number 101499095A " method that is used for the structure buffering of data sharing platform ".(author is Wu Fei at geospatial information disclosed article of in October, 2009 " three-dimensional geographic information share service Platform Implementation and application "; Introduced necessity, the construction meaning of three-dimensional geographic information share service platform construction Gong Zhifan) and built thinking, and used the concrete application that this platform has been introduced in demonstration through the earthquake special topic.At present existing method is just optimized to a certain technology and is innovated, and does not provide the total solution of information aspect use, service, maintenance and management.
Summary of the invention
The objective of the invention is in order to solve existing electronic chart in the problem of using and aspect such as management exists; The multi-platform share service of a kind of boats and ships electronic chart data system has been proposed; Storage and management in the Unified Set of realization electronic chart data; Both satisfied the demand of existing each user, got ready for the expansion of subsequent user again electronic chart; Both guarantee the accuracy and the promptness of sea chart that each user uses, alleviated the storage burden of each system user again.
The multi-platform share service of a kind of boats and ships electronic chart of the present invention data system comprises electronic chart data base server and electronic chart display and infor mation system based on linux system; Said electronic chart data base server based on linux system comprises electronic chart data base based on Oracle, corrects module automatically, upgrades and the electronic chart data transmission module of downloading based on the communication network module of C/S model with based on TFTP based on electronic chart administration module, the electronic chart of orthogonal list; Described electronic chart display and infor mation system comprises 3 kinds: based on the electronic chart display and infor mation system of Windows system, based on the electronic chart display and infor mation system of Vxworks system and based on the electronic chart display and infor mation system of linux system, all include the electronic chart retrieval module in every kind of electronic chart display and infor mation system.
Electronic chart retrieval module for receiving Windows system users, Vxworks system users or Linux system user input search criteria based on the corresponding operating system electronic chart display and information system will be sent to the search criteria based on C / S mode of information and communication network module, based on C / S mode of information and communication network modules from Oracle-based electronic chart database to obtain search results, and search results sent to the corresponding electronic chart display and information system, users choose to download search results based on the sea chart, electronic chart display and information modules to be downloaded chart updates and downloads via TFTP-based electronic chart data transmission module downloaded to the local and displayed.Electronic chart data base based on Oracle is used for the store electrons chart data, comprises electronic chart file and sea chart journal file; Electronic chart administration module based on orthogonal list adopts the orthogonal list index structure that concerns based on engineer's scale that the electronic chart data are managed; Electronic chart corrects module automatically and is used for the electronic chart data are carried out regular update and maintenance.
A kind of method that makes up the multi-platform share service device of boats and ships electronic chart data specifically comprises the steps:
Step 2, in electronic chart data base server, build based on the communication network module of C/S model and based on TFTP and upgrade and the electronic chart data transmission module of downloading based on linux system; Between server and user side, set up network and be connected, and the infomational message exchange method between server and the user side is set; The described renewal with the electronic chart data transmission module of downloading based on TFTP is used for from the electronic chart data base based on Oracle the sea chart that the user selects being transferred to electronic Chart Display and information module.
Step 4, in the electronic chart display and infor mation system of user side configuration, embed the electronic chart retrieval module, be used to receive the search condition of user's input.
Step 5, electronic chart display and infor mation system obtain result for retrieval according to search condition from the electronic chart data base server based on linux system; The user need to select the sea chart of download; Downloading to this locality through the electronic chart data transmission module that upgrades based on TFTP and download also shows; Accomplish to download or more after the new chart task the user; Automatically write down each user's Operation Log based on the electronic chart data base server of linux system, and upgrade the back at electronic chart and point out the user's download updating file of downloading this electronic chart.The present invention compared with prior art, the advantage and the good effect that have are:
(1) helps the centralized and unified management of electronic chart data;
(2) help guaranteeing the correctness and the promptness of the used electronic chart data of user terminal system;
(3) help electronic chart data user's expansion; Can directly insert the server end of the multi-platform share service device of boats and ships electronic chart data through Ethernet interface based on the user terminal system of different operating system; Agreement according to the share service device defines is downloaded the electronic chart data; The share service device provides the electronic chart display system based on Windows, Linux, Vxworks operating system simultaneously, and user terminal system can use electronic chart under above a plurality of operating systems;
(4) help alleviating the storage burden of user terminal system to a large amount of electronic chart data;
(5) help improving the rapidity and the reliability of transmission electronic chart data.
Description of drawings
Fig. 1 is the general structure synoptic diagram of the multi-platform share service of boats and ships electronic chart data of the present invention system;
Fig. 2 is an information communication process flow diagram of the present invention;
Fig. 3 is the communication network synoptic diagram based on C/S model of the present invention;
Fig. 4 is the orthogonal list index structure synoptic diagram based on the engineer's scale relation of the present invention.
Fig. 5 is electronic chart Data Loading of the present invention and correction process flow diagram;
Fig. 6 is that electronic chart data of the present invention are downloaded process flow diagram;
Fig. 7 is an electronic chart Data Update prompting process flow diagram of the present invention.
Embodiment
Multi-platform share service device of a kind of boats and ships electronic chart of the present invention data and construction method thereof; Purpose is to improve the management mode of electronic chart data; Form electronic chart data sharing service mechanism; Realize storage and management in the Unified Set of electronic chart data, guarantee the accuracy and the promptness of sea chart that each user uses.Below in conjunction with accompanying drawing the present invention is carried out detailed description, to further specify technical scheme of the present invention.
As shown in Figure 1, the multi-platform share service device of boats and ships electronic chart data of the present invention is divided into server end and user side.Server end is the electronic chart data base server 1 based on linux system; In this electronic chart data base server 1, include electronic chart data base 2, correct module 4 automatically, upgrade and the electronic chart data transmission module of downloading 6 based on the communication network module 5 of C/S (Client/Server, client/server) pattern with based on TFTP based on electronic chart administration module 3, the electronic chart of orthogonal list based on Oracle.User side comprises: based on the electronic Chart Display of Windows system and message block 8, based on the electronic Chart Display of Vxworks system and information module 9 with based on the electronic Chart Display and the information module 10 of linux system, in three electronic Chart Display and information module, all include electronic chart retrieval module 7.
Based on the electronic Chart Display of Windows system and information module 8, be respectively applied for three kinds of operating systems based on the electronic Chart Display of Vxworks system and information module 9 and electronic Chart Display and information module 10 based on linux system: Windows system, Vxworks system and linux system, carry out nautical chart information retrieval and demonstration in corresponding system.The user is by importing search conditions in the electronic Chart Display of respective operations system and the electronic chart retrieval module in the information module 7; Electronic Chart Display and information module send to the communication network module 5 based on C/S model with search condition; Communication network module 5 based on C/S model sends to electronic Chart Display and information module from obtaining result for retrieval based on electronic chart administration module 3 retrievals of orthogonal list; After the user obtains result for retrieval; The sea chart that selection will be downloaded, the sea chart that electronic Chart Display and information module will be downloaded is by downloading based on the electronic chart data transmission module 6 of TFTP renewal/download and showing in this locality.
Electronic chart data base 2 based on Oracle is used for the store electrons chart data, comprising electronic chart file and sea chart journal file two parts.Each user downloads in server 1 or the operation of upgrading electronic chart all can go on record; Behind the electronic chart file amendment, server 1 can point out corresponding user to upgrade according to the record in the corresponding sea chart journal file of this electronic chart in server 1.
Electronic chart administration module 3 based on orthogonal list adopts the orthogonal list index structure that concerns based on engineer's scale that the electronic chart data are managed; Set up the electronic chart index file; The necessary information that comprises all sea charts in the electronic chart data base 2 in this electronic chart index file; For example: the map title, figure number, engineer's scale, sea area scope etc.; The user is when retrieval; As long as the necessary information of input sea chart retrieves needed sea chart through retrieve electronic chart index file, can reduce user's retrieval time like this.
Electronic chart corrects module 4 automatically and according to notices to mariners the sea chart regular update is safeguarded; Electronic chart data in the storehouse 2 Update Information; The data of certain electronic chart after the renewal comprise the electronic chart original document and correct the back file; Simultaneously; This electronic chart update mode of record in the sea chart journal file of electronic chart; And in the sea chart journal file, search and whether have the user to download or upgraded this figure; If have the user to download or upgraded this figure; Server 1 sends to remind and upgrades the client of message to the relative users place; This user sees the renewal prompting when inquiring about this electronic chart next time, and then carries out the renewal of respective electronic sea chart.
Based on communication network module 5 charge servers of C/S model and the message communication between the user; Carrying out after identification and task confirm, the user is by downloading electronic chart file and electronic chart updating file based on the electronic chart data transmission module 6 of TFTP renewal/download.
Electronic chart retrieval module 7 is used for retrieve data, has four kinds of search modes: carry out fuzzy search by the sea area scope; Chi carries out fuzzy search in proportion; Carry out fuzzy search by sea area scope, engineer's scale; Accurately retrieve by extra large figure number.
The present invention makes up the method for the multi-platform share service device of above-mentioned boats and ships electronic chart data, specifically comprises the steps:
Step 2, in electronic chart data base server, build based on the communication network module of C/S model and based on TFTP and upgrade and the electronic chart data transmission module of downloading based on linux system; Between server and user side, set up network and be connected, and the infomational message exchange method between server and the user side is set; The described renewal with the electronic chart data transmission module of downloading based on TFTP is used for from the electronic chart data base based on Oracle the sea chart that the user selects being transferred to electronic Chart Display and information module.
Step 4, in the electronic chart display and infor mation system of user side configuration, embed the electronic chart retrieval module, be used to receive the search condition of user's input.
Step 5, electronic chart display and infor mation system obtain result for retrieval according to search condition from the electronic chart data base server based on linux system; The user need to select the sea chart of download; Downloading to this locality through the electronic chart data transmission module that upgrades based on TFTP and download also shows; Accomplish to download or more after the new chart task the user; Automatically write down each user's Operation Log based on the electronic chart data base server of linux system, and upgrade the back at electronic chart and point out the user's download updating file of downloading this electronic chart.
Shown in Figure 2 is the server of the described setting of step 2 and the infomational message exchange method between the user side, is that example describes in detail with the electronic chart display and information system 9 (following general designation user terminal system) based on the Vxworks system download the electronic chart file based on the electronic chart data base server 1 (following general designation server system) of linux system:
Step a. user terminal system 9 calls electronic chart retrieval module 7, and after the user selected a kind of retrieval mode and imports search condition, user terminal system 9 sent search electronic chart request message to server system 1;
After step b. server system 1 receives search electronic chart request message; According to user-selected retrieval mode; In electronic chart administration module 3, retrieve, and the extra large figure number that the Search Results message promptly searches is sent to user terminal system based on orthogonal list;
After step c user terminal system 9 is received the Search Results message; Send the sea chart Search Results to server system 1 and receive confirmation message; Behind the sea chart that the user downloads according to self needs selection needs, user terminal system 9 sends to server system 1 and downloads the sea chart request message;
Step d. Charts download server system a request packet received after 9 Download granted permission to the client system, the client system 9 charts to download files to the specified path, such as setting the downloaded files to the chart path :/ home / oracle / tftpboot / ECDIS / MAP / user 1 under, and then determine whether a server system is idle, if the server is busy, go to step e executed, if the server is idle, then the acknowledgment packet and send the download to the client system 9, the reason will need to download the charts files are copied to the specified path is a source file in order to prevent damage to the electronic chart.
If step e. server system 1 is in busy condition, then can send the message that waits for downloads to user terminal system 9, treat that server system during 1 free time, sends and downloads confirmation message to user terminal system 9.
Step f. user terminal system 9 is downloaded the electronic chart data file through the communication network module 5 based on C/S model, sends after download is accomplished to download and accomplishes message.
Step g. after server system 1 is received and is downloaded the completion message; With the respective downloaded path sea chart file delete under download path/home/oracle/tftpboot/ECDIS/MAP/ user 1 for example; And write down this user's download message, inquire about after being provided with or point out this user to upgrade use.
As shown in Figure 3, the electronic chart display and information system of each user side is downloaded the electronic chart data according to protocol specifications such as TCP/IP, UDP, TFTP through the electronic chart data transmission module 6 based on TFTP prompting/download.
As shown in Figure 4, the electronic chart administration module 3 based on orthogonal list adopts the orthogonal list index structure that concerns based on engineer's scale that the electronic chart data are managed.In this index structure, the orthogonal list of this index structure begins from root node TopNode, and root node TopNode is the maximum structure variable ScaleNode of engineer's scale, and the example root node among Fig. 4 is ScaleNode1.The all corresponding structure variable ScaleNode of the sea chart of each engineer's scale; Be provided with two pointer FirstNode and TailNode among the structure variable ScaleNode; Point to first node and tail node in the doubly linked list keep this engineer's scale sea chart respectively, all be provided with the pointer nextNode and the preNode that point to next node and previous node in the chained list among each the node M apNode in this doubly linked list.The structure variable ScaleNode of different proportion chi sea chart also uses a doubly linked list to link together; All be provided with the pointer that points to a previous ScaleNode node and a back ScaleNode node like the ScaleNode1 to ScaleNodeN among Fig. 4; And this chained list proportionally chi sorts, and is big more the closer to the engineer's scale of the corresponding sea chart of the structure variable ScaleNode of root node TopNode.According to structure that has defined and pointer, just can travel through All Files, and proportional chi is when instructing, retrieval rate is also very fast.
Described index structure can support by the sea area scope carry out fuzzy search, chi carries out fuzzy search, carries out fuzzy search, four kinds of search modes such as accurately retrieves by extra large figure number by sea area scope, engineer's scale in proportion.
As shown in Figure 5, illustrate with the correction flow process for the loading of electronic chart data:
A. the electronic chart data base server 1 based on linux system loads vector format electronic chart data through CD-ROM drive; Data are entered into original sea chart memory block promptly in the electronic chart data base 2 based on Oracle, upgrade the chart index file simultaneously and fill in the sea chart daily record.
B. according to notices to mariners, call electronic chart and correct the electronic chart data that module 4 corrects in the original sea chart memory block automatically, comprise electronic chart source document and amendment file, write down chart correction and update mode simultaneously, and fill in the sea chart daily record.
Fig. 6 shows the download flow process of electronic chart data:
A. user terminal system sends chart data searching request message to the electronic chart data base server 1 based on linux system; Based on the sea chart quantity that obtains the user terminal system needs behind electronic chart data base server 1 analytic message of linux system and the figure number of every width of cloth sea chart; Prepare corresponding electronic chart data for user terminal system then; Ready rear line end system sends downloads confirmation message, informs that user terminal system can download the electronic chart data;
B. will be loaded in user terminal system under the electronic chart data based on the electronic chart data base server 1 of linux system through himself the electronic chart data transmission module 6 based on TFTP prompting/download, user terminal system can carry out operations such as sea chart demonstration in this locality.
C. after treating that the electronic chart data download to be accomplished, be recorded in the sea chart journal file of server 1 based on the electronic chart data base server 1 of linux system data download situation with each user terminal system.
Fig. 7 shows electronic chart Data Update prompting flow process:
A. when highest version electronic chart data more, thereby the electronic chart data of loading through CD-ROM drive based on the electronic chart data base server 1 of linux system on the data update service device of highest version more form the electronic chart data after upgrading; When obtaining up-to-date notices to mariners, electronic chart corrects module 4 automatically and corrects chart data automatically, thereby also can form the electronic chart data after the renewal;
B. based on the electronic chart data base server 1 of linux system load the highest version data or carry out chart correction after; Access the sea chart daily record; Write down each user terminal system in the sea chart daily record respectively and when downloaded any width of cloth sea chart; The figure number of sea chart; The map title of sea chart; Whether carried out information such as renewal; In the sea chart daily record, check the figure number of the sea chart that each user terminal system had been downloaded; Thereby judge in the electronic chart data after upgrading and whether comprise the sea chart that user terminal system had been downloaded; If comprise then send the update notifying message to user terminal system, the prompting user terminal system is noted more new chart; If do not comprise then do not send the update notifying message, do not point out user terminal system to note more new chart.
Through above detailed introduction to multi-platform share service device of a kind of boats and ships electronic chart of the present invention data and construction method thereof; Can find that the present invention has following beneficial effect: concentrate, unified management the electronic chart data, the electronic chart data can downloaded and upgrade to user terminal system quickly and accurately simultaneously; User terminal system not only is confined to a kind of operating system, and the user under the different operating system can both download and use electronic chart, helps the expansion of electronic chart information and display system; Server system can upgrade the electronic chart file by the automatically prompting user end system, guarantees the correctness and the promptness of the used electronic chart data of user terminal system.
Claims (7)
1. the multi-platform share service device of boats and ships electronic chart data is characterized in that, comprises two big modules: based on the electronic chart data base server and the electronic chart display and infor mation system of linux system; Said electronic chart data base server based on linux system comprises five modules: based on the electronic chart data base of Oracle, correct module automatically, upgrade and the electronic chart data transmission module of downloading based on the communication network module of C/S model with based on TFTP based on electronic chart administration module, the electronic chart of orthogonal list; Described electronic chart display and infor mation system is positioned at user side; Comprise 3 kinds:, all include the electronic chart retrieval module in every kind of electronic chart display and infor mation system based on the electronic chart display and infor mation system of Windows system, based on the electronic chart display and infor mation system of Vxworks system and based on the electronic chart display and infor mation system of linux system;
Electronic chart data base based on Oracle is used for the store electrons chart data, comprises electronic chart file and sea chart journal file; Electronic chart administration module based on orthogonal list adopts the orthogonal list index structure that concerns based on engineer's scale that the electronic chart data are managed, and has set up the electronic chart index file; Electronic chart corrects module automatically and is used for the electronic chart data are carried out regular update and maintenance;
Electronic chart retrieval module for receiving the current operating system user input search criteria based on the current operating system electronic chart display and information system will send search criteria based on C / S mode of information and communication network module, based on C / S mode information and communication network module will send search criteria based on cross-linked electronic chart management module, based on electronic chart Cross Chain Management module according to the search criteria cited in the electronic document retrieval AFFECTED get search results, and search results based C / S mode communication network module sends the information to the corresponding electronic chart display and information system, users choose to download search results based on the charts, electronic chart display and information modules will be selected by the user to download the chart updates and downloads via TFTP-based electronic chart data transmission module downloaded to the local and display; Linux-based electronic chart database server to download or update the user completes the chart after chart log file automatically records each user's operation log, and in the electronic chart update prompts users to download the electronic charts download the update file.
2. the multi-platform share service device of a kind of boats and ships electronic chart data according to claim 1; It is characterized in that; Described electronic chart retrieval module; Adopt four kinds of search modes: carry out fuzzy search by the sea area scope; Chi carries out fuzzy search in proportion; Carry out fuzzy search by sea area scope, engineer's scale, and accurately retrieve by extra large figure number.
3. a method that makes up the multi-platform share service device of the described boats and ships electronic chart of claim 1 data is characterized in that said method comprises the steps:
Step 1, under linux system configuration based on the electronic chart data base server of linux system, specifically: linux system /the etc/X11/xorg.conf file in, the configuration display mode; Linux system /accomplish network configuration under the etc/sysconfig/network-scripts path, two network interface card redundancy schemes are set; Configuration visudo makes described electronic chart data base server have the root authority; Under oracle user, the electronic chart data base of creating based on Oracle is used for the store electrons chart data; Create the electronic chart administration module of orthogonal list, adopt based on the orthogonal list index structure of engineer's scale relation the electronic chart data in the electronic chart data base are managed; Create electronic chart and correct module automatically, be used for the electronic chart data are carried out regular update and maintenance;
Step 2, in electronic chart data base server, build based on the communication network module of C/S model and based on TFTP and upgrade and the electronic chart data transmission module of downloading based on linux system; Between server and user side, set up network and be connected, and the infomational message exchange method between server and the user side is set; The described renewal with the electronic chart data transmission module of downloading based on TFTP is used for from the electronic chart data base based on Oracle the sea chart that the user selects being transferred to electronic Chart Display and information module;
Step 3, to the user side of different operating system, correspondingly dispose: based on the electronic chart display and infor mation system of Windows system, based on the electronic chart display and infor mation system of Vxworks system and based on the electronic chart display and infor mation system of linux system at user side;
Step 4, in the electronic chart display and infor mation system of user side configuration, embed the electronic chart retrieval module, be used to receive the search condition of user's input;
Step 5, electronic chart display and infor mation system obtain result for retrieval according to search condition from the electronic chart data base server based on linux system; The user need to select the sea chart of download; Downloading to this locality through the electronic chart data transmission module that upgrades based on TFTP and download also shows; Accomplish to download or more behind the new chart the user; Automatically write down each user's Operation Log based on the electronic chart data base server of linux system, and upgrade the back at electronic chart and point out the user's download updating file of downloading this electronic chart.
4. the method for the multi-platform share service device of structure boats and ships electronic chart data according to claim 3 is characterized in that, the server of the described setting of step 2 and the infomational message exchange method between the user side, and concrete steps are following:
Step a. electronic chart display and information system sends search electronic chart request message to the electronic chart data base server based on linux system; The search condition that comprises user's input in the described electronic chart request message;
Step b. receives the laggard line search of search electronic chart request message based on the electronic chart data base server of linux system, and the Search Results message is sent to electronic chart display and information system;
The step c electronic chart display and information system is received confirmation message to the electronic chart data base server transmission sea chart Search Results based on linux system after receiving the Search Results message; The user need to select the sea chart of download then, and electronic chart display and information system sends to the electronic chart data base server based on linux system and downloads the sea chart request message;
Steps d. based on the electronic chart data base server of linux system receive download the sea chart request message after; Authorize this electronic chart display and information system and download authority; And the sea chart file copy that this sea chart display message and system will be downloaded is under specified path; Judge then whether server is in the free time; If not, change step e and carry out, if; Then server and transmission are downloaded confirmation message and are given sea chart display message and system, change step f then and carry out;
Step e. sends the message that waits for downloads based on the electronic chart data base server of linux system to electronic chart display and information system; Treat to authorize when server is idle electronic chart display and information system to download authority; The sea chart file copy that this sea chart display message and system will be downloaded and is sent and is downloaded confirmation message and give sea chart display message and system under specified path;
Step f. electronic chart display and information system sends after download is accomplished to download and accomplishes message to the electronic chart data base server based on linux system through network download electronic chart data file;
Step g. based on the electronic chart data base server of linux system receive download to accomplish message after, with the sea chart file delete under the respective downloaded path, and write down this user's download message.
5. the method for the multi-platform share service device of structure boats and ships electronic chart data according to claim 3; It is characterized in that; Electronic chart retrieval module described in the step 4 is provided with four kinds of search modes: carry out fuzzy search by the sea area scope; Chi carries out fuzzy search in proportion; Carry out fuzzy search by sea area scope, engineer's scale, and accurately retrieve by extra large figure number.
6. the method for the multi-platform share service device of structure boats and ships electronic chart data according to claim 3; It is characterized in that; Store electrons chart data described in the step 1; Specifically be the electronic chart data of loading vector format through CD-ROM drive; And the electronic chart data of loading are entered in the electronic chart data base based on Oracle, upgrade the electronic chart index file then and fill in the sea chart daily record.
7 according to claim 3, wherein the electronic chart data to build the ship multi-platform sharing service device, wherein said fifth step prompts the user download the update file, specifically: Linux-based electronic chart database the server load higher version or electronic chart data corrected for electronic chart data, adjusting the sea chart logs and logs on the chart to view each client has downloaded the charts, drawing number, determine the updated electronic chart data contains the client has downloaded the charts, if it contains updates to the user sends alert messages, if you do not send an update that contains no reminder message; said chart log records for each client Which when downloaded charts, charts drawing number, name, and figure charts charts have ever been updated information.
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| CN105981025B (en) * | 2014-12-01 | 2018-06-08 | 哈尔滨工程大学 | Actual measurement marine environment data assimilation method based on sequence recursive filtering three-dimensional variation |
| CN107278363A (en) * | 2015-03-27 | 2017-10-20 | 英特尔公司 | System and technology for network service |
| CN107040390A (en) * | 2017-06-01 | 2017-08-11 | 上海埃威航空电子有限公司 | The marine wireless chart update system and method for intermediate frequency |
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| CN110364027A (en) * | 2019-06-27 | 2019-10-22 | 中国人民解放军92859部队 | It is a kind of that the method and its system of notices to mariners information are provided |
| CN111426365A (en) * | 2020-03-31 | 2020-07-17 | 天津开发区瑞锋科技有限公司 | Crowd funding type intelligent water depth data acquisition system and method |
| CN111426365B (en) * | 2020-03-31 | 2021-10-08 | 天津开发区瑞锋科技有限公司 | Crowd funding type intelligent water depth data acquisition system and method |
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