CN102359785B - Method for automatically generating virtual navigation mark on electronic navigation channel chart according to water level change - Google Patents
Method for automatically generating virtual navigation mark on electronic navigation channel chart according to water level change Download PDFInfo
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Abstract
The present invention discloses a method for automatically generating a virtual navigation mark on an electronic navigation channel chart according to water level change. According to the method, an automatic water level remote control detection device with GPS positioning is installed on a river reach; the automatic water level remote control detection device transmits detected water level information to a computer in a management center; the computer in the management center receives and releases the water level data; a terminal computer automatically generates a virtual navigation mark based on the existing electronic map layer information according to the water level data, and displays new virtual navigation mark information on the electronic navigation channel chart. With the present invention, the remote and real time monitoring of the water level of the river can be easily performed by the navigational fair department and the water conservancy department, the management department can real timely view the water level of the key point of the river, the virtual navigation mark can be automatically generated according to the water level change, and the safety guarantee is provided for ship navigation.
Description
Technical field
The present invention relates to waterway figure, the water level that particularly detects automatically, sends, receives through the river water level and receive according to water level generates the method for virtual navigation mark automatically.
Technical background
Navigation mark is in order to guarantee marine operation safety, the zone that averts danger, and direction finding course and be installed in a kind of means of transportation in rivers and lakes, the ocean has played very big effect to navigation development.China is as a waters big country that the marine site is vast, rivers and lakes are numerous, and the shipping industry development rapidly.And the shipping expanding economy receives the restriction of navigation safety, and this just requires the navigation mark cause to constantly bring forth new ideas, constantly adapt to the shipping expanding economy.According to incompletely statistics, by the end of the year 2008, China be provided with all kinds of navigation marks exceeded 40,000 surplus the seat.
Frequent day by day along with the flourish and foreign exchanges of China's economy, shipping economy is constantly developed, and the navigation mark cause is increasingly important.And along with the heightening of each harbour, navigation channel, water route boats and ships flow, stranded, collision accident also takes place frequently day by day, and traditional navigation mark can not satisfy the requirement of navigation safety.Therefore; Navigation mark new technology, new forms of energy; The navigation mark that is adapted to varying environment arises at the historic moment, and the radiobeacon technology also in the computing machine and the communication technology continuous perfect, develops into DGPS system, CCTV system, Pharos Remote Sensing and Control System and the AIS bank base net network system that can alarm the location from radio homing machine, rowland A etc.; Developing into the multiple navaid means of collection is the comprehensive navaid security system of one, for boats and ships provide multiple navaid information service.These have all injected new vitality for the shipping expanding economy.
Above-mentioned all is to belong to the fixed point buoy, is in esse, and we are called real navigation mark.There are two drawbacks in real navigation mark in practical application, and the one, some place needs to place navigation mark, but the bad placement of actual environment; The 2nd, the water level in inland river is very big with seasonal variations, the wet season and low water season the depth of water differ greatly, particularly in reservoir area and river, the upper reaches, so the position that navigation mark is placed will often change, maintenance cost is high.In recent years; The development of Along with computer technology and mechanics of communication, increasing boats and ships have all been installed the GPS navigation system, and these systems can pass through GPRS and server real-time communication; Can change some display message on the map in real time, this provides possibility for the use of virtual navigation mark.So-called virtual navigation mark is exactly not exist in the reality, but through after measuring; Virtual " navigation mark " position is transformed in the electronic chart system; As long as navigating ship is equipped with the GPS navigation system, just can receives this virtual " navigation mark " information and on map, show, especially when foggy weather, night, environment navigated by water; Boats and ships can be unaffected fully, knows the navigation mark position.
More existing marine navigators are to adopt the manual position that virtual navigation mark is set to be published to this method of Shipborne terminal again on " virtual navigation mark " this problem.This method has two drawbacks, and the one, virtual navigation mark can not in time reflect the variation of water level; The 2nd, downloading process bothers, and has increased crewman's work load and broadband cost of use.For virtual accurately navigation mark information is provided to marine navigation equipment, in time reflect the river level situation, the guiding marine operation safety must solve the self-adjusting problem in virtual navigation mark position of leading.
Summary of the invention
The objective of the invention is to utilize the data of water level remote control pick-up unit to come to generate automatically the virtual navigation mark that is fit to current water level, the guiding marine operation safety.
Technical solution of the present invention is to realize like this
:
A plurality of water level remote control pick-up units are installed on the section; Water level remote control pick-up unit is gathered level sensor data and GPS position data, and analyzes, preserves; Water level remote control pick-up unit adopts the wireless connections mode to be connected with management centre computer through the GPRS module, transmits waterlevel data and gps data to management centre computer, and receives and carry out the instruction that management centre computer passes down; The management centre computer installation data receives software kit, receives the information that water level remote control pick-up unit is uploaded in real time, is kept at information in the database, and regularly issues water level information to each terminal computer; Terminal computer is installed the map treatment software kit, receives waterlevel data and data are analyzed and handled, and on electronic chart layer information basis, generates virtual navigation mark automatically according to result, and on the electronics navigation channel chart, shows new virtual navigation mark information.
The water level remote control pick-up unit of above-described band GPS location; Comprise embedded Control center, level detection sensor, GPS locating module, GPRS wireless communication module and working power module, wherein on the control panel at embedded Control center, be provided with two RS232 serial ports, direct supply interface, sensor interface; Working power is connected with the embedded Control center through the direct supply interface; The GPS module is connected with the embedded Control center through the RS232 serial ports; The GPRS module is connected with the embedded Control center through the RS232 serial ports; The water level monitoring sensor is connected with the embedded Control center through sensor interface, and the embedded Control center also is provided with reset circuit and power supply.
The embedded Control center can be a single-chip microcomputer, or microprocessor.
Management centre computer is the computing machine of a band public network IP, and the Mysql Database Systems have been installed.
The GPRS wireless communication module is a kind of radio modem based on GPRS network, embedded complete ICP/IP protocol, realizes wireless connections and communication with management centre computer.
Level detection sensor is a pressure transducer, and it is fixed on below the water surface in river course through the sand prevention steel drum of a band draw point, is connected with the embedded Control center through cable.
Working power is a direct supply, comprises power supply or the accumulator or the direct supply of AC power after conversion of solar panel and accumulator combination.
The embedded Control center is connected with level detection sensor, can gather the numerical value of level detection sensor from the test point transmission in real time, and is converted to the storage of water surface value.
The embedded Control center is connected with the GPS module, receives the GPS positional information in real time, and the information contrast of preserving with the last time, if change in location greater than the original value of setting, just to the information of system's transmission mobile alarm, plays the antitheft effect.
The embedded Control center is connected with the GPRS module, through GPRS module and management centre computer wireless connections, uploads waterlevel data and GPS position data to management centre computer.
The Data Receiving software kit has been installed on the management centre computer; Can receive and preserve the value of river level being carried out remote real time monitoring, the content of monitoring comprises: water level value and the detection time that the physical location of device, pen recorder detect, enumerate the historical record of device sensed water level, manage for the navigation channel water level information etc. is provided.Software carries out validity to the data that receive to be judged, active data is saved in database, and per minute is sent the network attack of being used as of invalid data more than 10 times, breaks off this and mustn't reconnect in connecting 30 minutes.
Above-mentioned Data Receiving software kit is a kind of based on C Plus Plus, develops, is applicable to the software of this method voluntarily, possesses data validity judgement, rapid saving and prevents to attack function.
Described electronic chart layer information is the data set in the map made in early stage: the one, and the position and the state of the existing navigation mark of record, be the navigation mark message data set of virtual navigation mark or actual navigation mark; The 2nd, form by the level line of two identical height value; Write down the face data set of this height value shoal water zone; The 3rd, form by the level line of two identical height value, write down the face data set of this height value profundal zone, the 4th, by about the face data set of the boat groove formed of two lines; The 5th, boat groove centerline data collection, the 6th, barrier data sets such as cross a river bridge construction or island, the middle of the river, reef;
The map treatment software kit has been installed on the described management centre computer, and the method that generates virtual navigation mark automatically comprises the following steps:
(1) system transfers and generated the water level information value S0 and average height value H0 that preserves behind the virtual navigation mark last time;
(2) the water level information value S that sends of program receiving management center, and data are analyzed according to up-to-date water level information and the last water level information S0 that preserves relatively, surpasses about definite value then carries out the automatic generation of virtual navigation mark if differ;
(3) whenever get a point at a distance from 10 meters based on boat groove center line, get 10 at every turn, do the vertical line of center line respectively at these points; These vertical lines intersect with the sideline of boat groove, profundal zone, phytal zone respectively on the center line both sides; The record joining also writes down the distance L 1 of intersection point to these points, L2, L3;
(4) before the virtual navigation mark of placement, remove the virtual navigation mark information of navigation mark message data set the inside earlier;
(5) to the virtual navigation mark of the placement that meets following condition:
< 5 expression boat trough rim lines are relatively near the sideline of profundal zone, and just navigate groove and shoal water zone are more approaching if C1 is L2-L1; If < 10 expression boat trough rim lines are relatively near the sideline of shoal water zone, and just navigate groove and riverbank are more approaching for L3-L1; Both of these case all representes to prevent virtual navigation mark, but only gets in these 10 somes the L2-L1 minimum or the minimum point of L3-L1 is put;
C2, calculate the boat groove center line bigger place of turning round; Computing method be have in continuous 5 vertical lines two intersect and angle greater than 45 degree; Turning round a little is the mid point of these two points that hang down on the boat groove center line, and a vertical line is put virtual navigation mark with the sideline joining of boat groove turning round;
C3, search the river and can heal up and divide prong, need be according to boat well width difference main flow and tributary, tributary boat groove center line is placed virtual navigation mark with main flow boat trough rim line joining, and the trough rim line intersection of navigating is placed virtual navigation mark respectively; If main flow and tributary are more or less the same, then place virtual navigation mark in the center line joining;
If the face of C4 vertical line and cross a river bridge construction or barrier data sets such as island, the middle of the river, reef record intersects, and, dangerous thing in the middle of the boat groove is described, on the sideline of intersecting, is put virtual navigation mark apart from less than L1;
If C5 does not belong to above-mentioned situation, then whenever just on the boat trough rim, place a virtual navigation mark, as the sign of navigation at a distance from 1 kilometer;
C6, when placing virtual navigation mark, need to judge that the navigation mark information data concentrates to have near the corresponding point and do not have virtual navigation mark or actual navigation mark to exist, have then and do not place;
C7, preservation water level information value S preserve dispersed elevation value H1 to H0 to S0.
Above-mentioned map treatment software kit is a kind of based on C Plus Plus, develops, is applicable to the software of this method voluntarily, can the receiving management central computer waterlevel data of issue, analyze and handle, generate virtual navigation mark automatically according to result.
(6) on the electronics navigation channel chart, show new virtual navigation mark information.
The function of software is divided into input, output, data processing, map operation three parts.(1) input, output: input comprise receiving management central computer issue waterlevel data, read the local profile data, open electronics navigation channel chart file, be written into template etc.; Output comprises the waterlevel data that preserve to receive, preserve template, preserve configuration file, preserve virtual navigation mark data after upgrading, print virtual navigation mark arrangenent diagram etc.(2) data processing: data processing is exactly to the waterlevel data process computing that receives, and upgrades virtual navigation mark figure layer data.(3) map operation: use the management map instrument of hypergraph software as bottom; Through calling the correlation function function of hypergraph software SuperMap Objects; Again the virtual navigation mark information after draw upgrading on the electronics navigation channel chart, and relevant operating function interface is provided.
Operating software; The waterlevel data of receiving management central computer issue in real time to the waterlevel data process computing that receives, is preserved result; And, call hypergraph software then and on the electronics navigation channel chart, show new virtual navigation mark information according to the virtual navigation mark of the automatic generation of result.
The invention has the beneficial effects as follows:
1, the water level automatic remote control pick-up unit of being with the GPS location of the present invention; Can utilize water level remote control pick-up unit that waterlevel data and position data are uploaded to management centre computer; Management centre computer receives and the issue digit information, and the terminal generates virtual navigation mark according to waterlevel data after receiving waterlevel data automatically, for ship's navigation provides safety assurance; For flood control, shipping etc. provide data, can be applied to the regimen information work field of water conservancies at different levels, the hydrology, shipping sector simultaneously.
2, make things convenient for traffic department and hydraulic department remote real-time monitoring to river level.Adopt this device, administrative authority is the water level with regard to ability real time inspection river key point in office, checks the historical record of water level, analyzes the Changing Pattern of water level according to the historical record of water level.
3, provide green stabilized power source for oneself: adopt solar poweredly, i.e. energy savings also can guarantee the stable of equipment voltage.
4, adopt uninterrupted unmanned work: Account Dept's non-stop run, can realize unattended water level monitoring, and write down testing result constantly, keep the historical record of water level, for the variation of analyzing water level provides reference.
5, monitoring position: the position of real-time dispensing device, avoided the stolen of equipment.
Description of drawings
Fig. 1 is water level automatic remote control pick-up unit structural framing figure of the present invention;
Fig. 2 is a water level automatic remote control pick-up unit workflow synoptic diagram of the present invention;
Fig. 3 is water level automatic remote control pick-up unit circuit theory diagrams of the present invention;
Fig. 4 upgrades the workflow synoptic diagram of virtual navigation mark automatically according to SEA LEVEL VARIATION for the present invention.
Embodiment
Further specify the present invention below in conjunction with accompanying drawing and embodiment.
Further specify the present invention below in conjunction with accompanying drawing and embodiment:
1, with reference to Fig. 1, a kind of water level automatic remote control pick-up unit by 1. embedded Control centers, 2. working dc power, 3.GPRS module, 4.GPS module, 5. the level pressure sensor, 6. the telemanagement central computer is formed, its job step is following:
A, this device are encapsulated in the metal cabinet, are connected with sun-generated electric power with level sensor through shielded cable.
B, embedded Control center are connected with the working power module; Start working in embedded Control center, power supply back; The various module parameters of cycle detection change; The computational analysis testing result also sends to the telemanagement central computer to information, simultaneously the steering order of receiving remote management centre computer and carrying out;
C, embedded Control center are connected with level detection sensor; Gather the water depth value that level detection sensor detects in real time; Numerical analysis to gathering judges, if after the numerical value B and the preceding numerical value A that once receives that once receive relatively differ bigger, temporarily do not send; Store earlier temporarily, wait the next numerical value C of level detection sensor to be collected to compare again; If the value of A and C is more or less the same, just give up B, otherwise two value B and C send to server together with the time of receiving;
D, embedded Control center are connected with the GPS module, receive the GPS positional information in real time, and the information contrast of preserving with the last time, if change in location greater than the original value of setting, just to the information of system's transmission mobile alarm, plays the antitheft effect;
E, embedded Control center are connected with the GPRS module, through GPRS and management centre computer wireless connections, upload waterlevel data and GPS position data to central server; Module possesses autoconnect function, can be connected to management centre computer automatically again behind the broken string;
2, install and moved the Data Receiving software kit on the management centre computer; Can receive and preserve the value of river level being carried out remote real time monitoring, the content of monitoring comprises: water level value and the detection time that the physical location of device, pen recorder detect, enumerate the historical record of device sensed water level, manage for the navigation channel water level information etc. is provided.Software carries out validity to the data that receive to be judged, active data is saved in database; Per minute is sent the network attack of being used as of invalid data more than 10 times, break off this and mustn't reconnect in connecting 30 minutes; Regularly issue the latest data of water level to terminal computer.
Above-mentioned Data Receiving software kit is a kind of based on C Plus Plus, develops, is applicable to the software of this method voluntarily, possesses data validity judgement, rapid saving and prevents to attack function.
3, install and moved the map treatment software kit on the terminal computer; The waterlevel data of receiving management central computer issue is in real time also analyzed and is handled data, uses the management map instrument of hypergraph software as bottom, has made map early stage; Be designed with six data sets in the map: the one, the position and the state of the existing navigation mark of record, be the navigation mark message data set of virtual navigation mark or actual navigation mark; The 2nd, form by the level line of two identical height value, write down the face data set of this height value shoal water zone, the 3rd, form by the level line of two identical height value; Write down the face data set of this height value profundal zone; The 4th, by about the face data set of the boat groove formed of two lines, the 5th, boat groove centerline data collection, the 6th, barrier data sets such as cross a river bridge construction or island, the middle of the river, reef; Water level information value S0 and dispersed elevation H0 when system preserves each renewal navigation channel;
The method that generates virtual navigation mark is following:
(1) system transfers and generated the water level information value S0 and average height value H0 that preserves behind the virtual navigation mark last time;
(2) the water level information value S that sends of program receiving management center, and data are analyzed, the water level information S0 that preserves during with last the modification according to up-to-date water level information relatively, if differ above 1M then carry out the automatic generation of virtual navigation mark;
(3) whenever get a point at a distance from 10 meters based on boat groove center line, get 10 at every turn, do the vertical line of center line respectively at these points; These vertical lines intersect with the sideline of boat groove, profundal zone, phytal zone respectively on the center line both sides; The record joining also writes down the distance L 1 of intersection point to these points, L2, L3;
(4) before the virtual navigation mark of placement, remove the virtual navigation mark information of navigation mark message data set the inside earlier;
(5) to the virtual navigation mark of the placement that meets following condition:
< 5 expression boat trough rim lines are relatively near the sideline of profundal zone, and just navigate groove and shoal water zone are more approaching if C1 is L2-L1; If < 10 expression boat trough rim lines are relatively near the sideline of shoal water zone, and just navigate groove and riverbank are more approaching for L3-L1; Both of these case all representes to prevent virtual navigation mark, but only gets in these 10 somes the L2-L1 minimum or the minimum point of L3-L1 is put;
C2, calculate the boat groove center line bigger place of turning round; Computing method be have in continuous 5 vertical lines two intersect and angle greater than 45 degree; Turning round a little is the mid point of these two points that hang down on the boat groove center line, and a vertical line is put virtual navigation mark with the sideline joining of boat groove turning round;
C3, search the river and can heal up and divide prong, need be according to boat well width difference main flow and tributary, tributary boat groove center line is placed virtual navigation mark with main flow boat trough rim line joining, and the trough rim line intersection of navigating is placed virtual navigation mark respectively; If main flow and tributary are more or less the same, then place virtual navigation mark in the center line joining;
If the face of C4 vertical line and cross a river bridge construction or barrier data sets such as island, the middle of the river, reef record intersects, and, dangerous thing in the middle of the boat groove is described, on the sideline of intersecting, is put virtual navigation mark apart from less than L1;
If C5 does not belong to above-mentioned situation, then whenever just on the boat trough rim, place a virtual navigation mark, as the sign of navigation at a distance from 1 kilometer;
C6, when placing virtual navigation mark, need to judge that the navigation mark information data concentrates to have near the corresponding point and do not have virtual navigation mark or actual navigation mark to exist, have then and do not place;
C7, preservation water level information value S preserve dispersed elevation value H1 to H0 to S0.
(6) on the electronics navigation channel chart, show new virtual navigation mark information.
Above-mentioned map treatment software kit is a kind of based on C Plus Plus; Develop, be applicable to the software of this method voluntarily; Can the receiving management central computer waterlevel data of issue; Analyze and handle, generate virtual navigation mark automatically, and on the electronics navigation channel chart, show new virtual navigation mark information according to result.
Claims (9)
1. one kind generates the method for virtual navigation mark automatically according to SEA LEVEL VARIATION on the electronics navigation channel chart, it is characterized in that, may further comprise the steps:
The water level automatic remote control pick-up unit of mounting strap GPS location on the section;
Water level remote control pick-up unit is gathered level sensor data and GPS position data, and analyzes, preserves;
Water level remote control checkout gear adopts the wireless connections mode to be connected with management centre computer by the GPRS wireless communication module; Transmission by analysis, the level sensor data after preserving and GPS position data be to management centre computer, and receive and carry out the instruction that management centre computer passes down;
The management centre computer installation data receives software kit, and receive the information that water level remote control pick-up unit uploads in real time and be kept in the database, and to these water level information data of terminal computer issue;
The terminal computer installation data is handled the drawing software kit; The water level information data that the automatic reception management centre computer is sent; And data are analyzed and handle; On existing electronic chart layer information basis, generate virtual navigation mark automatically according to result V, and on the electronics navigation channel chart, show new virtual navigation mark information, the boats and ships that this kind equipment has been installed can navigate according to virtual navigation mark and go;
Automatically the process that generates virtual navigation mark is following:
(1) system transfers and generated the water level information value S0 and average height value H0 that preserves behind the virtual navigation mark last time;
(2) the water level information value S that sends of program receiving management center, and data are analyzed according to up-to-date water level information and the last water level information S0 that preserves relatively, surpasses about definite value then carries out the automatic generation of virtual navigation mark if differ;
(3) whenever get a point at a distance from 10 meters based on boat groove center line, get 10 at every turn, do the vertical line of center line respectively at these points; These vertical lines intersect with the sideline of boat groove, profundal zone, phytal zone respectively on the center line both sides; The record joining also writes down the distance L 1 of intersection point to these points, L2, L3;
(4) before the virtual navigation mark of placement, remove the virtual navigation mark information of navigation mark message data set the inside earlier;
(5) to the virtual navigation mark of the placement that meets following condition:
< 5 expression boat trough rim lines are relatively near the sideline of profundal zone, and just navigate groove and shoal water zone are more approaching if C1 is L2-L1; If < 10 expression boat trough rim lines are relatively near the sideline of shoal water zone, and just navigate groove and riverbank are more approaching for L3-L1; Both of these case representes that all needs place virtual navigation mark, but only gets in these 10 somes the L2-L1 minimum or the minimum point of L3-L1 is put;
C2, calculate the boat groove center line bigger place of turning round; Computing method be have in continuous 5 vertical lines two intersect and angle greater than 45 degree; Turning round a little is the mid point of these two points that hang down on the boat groove center line, and a vertical line is put virtual navigation mark with the sideline joining of boat groove turning round;
C3, search the river and can heal up and divide prong, need be according to boat well width difference main flow and tributary, tributary boat groove center line is placed virtual navigation mark with main flow boat trough rim line joining, and the trough rim line intersection of navigating is placed virtual navigation mark respectively; If main flow and tributary are more or less the same, then place virtual navigation mark in the center line joining;
If the face of C4 vertical line and cross a river bridge construction or island, the middle of the river, reef barrier data set record intersects, and, dangerous thing in the middle of the boat groove is described, on the sideline of intersecting, is put virtual navigation mark apart from less than L1;
If C5 does not belong to above-mentioned situation, then whenever just on the boat trough rim, place a virtual navigation mark, as the sign of navigation at a distance from 1 kilometer;
C6, when placing virtual navigation mark, need to judge that the navigation mark information data concentrates to have near the corresponding point and do not have virtual navigation mark or actual navigation mark to exist, have then and do not place;
C7, preservation water level information value S preserve dispersed elevation value H1 to H0 to S0; Said dispersed elevation value H1 is the mean value of water level information value S to S0.
2. a kind of method that on the electronics navigation channel chart, generates virtual navigation mark according to SEA LEVEL VARIATION automatically according to claim 1; It is characterized in that: water level remote control pick-up unit comprises embedded Control center, level detection sensor, GPS locating module, GPRS wireless communication module and working power module, wherein on the control panel at embedded Control center, is provided with two RS232 serial ports, direct supply interface, sensor interface; The working power module is connected with the embedded Control center through the direct supply interface; The GPS locating module is connected with the embedded Control center through a RS232 serial ports; The GPRS wireless communication module is connected with the embedded Control center through the 2nd RS232 serial ports, and level detection sensor is connected with the embedded Control center through sensor interface.
3. according to claim 1ly a kind ofly on the electronics navigation channel chart, generate the method for virtual navigation mark automatically according to SEA LEVEL VARIATION, it is characterized in that: management centre computer is the computing machine of a band public network IP, and the Mysql Database Systems have been installed.
4. the method that on the electronics navigation channel chart, generates virtual navigation mark automatically according to claim 2, it is characterized in that: the embedded Control center can be a single-chip microcomputer, or microprocessor.
5. a kind of method that on the electronics navigation channel chart, generates virtual navigation mark according to SEA LEVEL VARIATION automatically according to claim 2; It is characterized in that: the GPRS wireless communication module is a kind of radio modem based on GPRS network, embedded complete ICP/IP protocol, realizes wireless connections and communication with management centre computer.
6. a kind of method that on the electronics navigation channel chart, generates virtual navigation mark according to SEA LEVEL VARIATION automatically according to claim 2; It is characterized in that: level detection sensor is a pressure transducer; It is fixed on below the water surface in river course through the sand prevention steel drum of a band draw point, is connected with the embedded Control center through cable.
7. a kind of method that on the electronics navigation channel chart, generates virtual navigation mark according to SEA LEVEL VARIATION automatically according to claim 2; It is characterized in that: said working power is a direct supply, comprises power supply or the accumulator or the direct supply of AC power after conversion of solar panel and accumulator combination.
8. a kind of method that on the electronics navigation channel chart, generates virtual navigation mark according to SEA LEVEL VARIATION automatically according to claim 2; It is characterized in that: said embedded Control center is connected with the GPS module; Receive in real time the GPS positional information, and the information contrast of preserving with the last time, if change in location is greater than the original value of setting; Just send the information of mobile alarm, play the antitheft effect to system.
9. a kind of method that on the electronics navigation channel chart, generates virtual navigation mark according to SEA LEVEL VARIATION automatically according to claim 1; It is characterized in that: electronic chart layer information is the data set in the map made in early stage: the one, and the position and the state of the existing navigation mark of record, be the navigation mark message data set of virtual navigation mark or actual navigation mark; The 2nd, form by the level line of two identical height value; Write down the face data set of this height value shoal water zone; The 3rd, form by the level line of two identical height value, write down the face data set of this height value profundal zone, the 4th, by about the face data set of the boat groove formed of two lines; The 5th, boat groove centerline data collection, the 6th, cross a river bridge construction or island, the middle of the river, reef barrier data set.
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| CN108090134B (en) * | 2017-11-24 | 2020-07-24 | 重庆英卡电子有限公司 | Management map expression method based on virtual and real POI tree |
| CN109474910B (en) * | 2018-11-05 | 2022-02-18 | 福建师范大学 | Virtual navigation mark registering method based on entity navigation mark position |
| CN111006735A (en) * | 2019-12-31 | 2020-04-14 | 太原理工大学 | Using method of sensing device for dynamically measuring sedimentation and volume change in water reservoir |
| CN111414442A (en) * | 2020-01-08 | 2020-07-14 | 重庆大学 | Navigation mark position checking method based on navigation channel topographic map and water level data |
| CN113758539B (en) * | 2021-09-06 | 2022-06-28 | 湖南霍力柯尔仪器仪表有限公司 | Liquid level sensor based on wireless Internet of things |
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| JP2001319300A (en) * | 2000-05-09 | 2001-11-16 | Ohbayashi Corp | Navigation area management system |
| CN100576284C (en) * | 2007-12-30 | 2009-12-30 | 深圳华强信息产业有限公司 | Method for scheduling navigation channel transportation |
| CN101319903A (en) * | 2008-07-15 | 2008-12-10 | 浙江思拓信息工程有限公司 | Intelligent navigation monitoring system for vessel |
| GB2474715B (en) * | 2009-10-26 | 2013-09-18 | Dynamic Marine Data Ltd | Navigation device, networked apparatus, method and computer program for aiding navigation of a marine vessel |
| CN201672926U (en) * | 2010-04-15 | 2010-12-15 | 长江航道局 | Inland waterway water depth easy measuring device based on GPS |
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