CN1082669C - Electronic geographic-information positioning method and equipment - Google Patents
Electronic geographic-information positioning method and equipment Download PDFInfo
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- CN1082669C CN1082669C CN98111625A CN98111625A CN1082669C CN 1082669 C CN1082669 C CN 1082669C CN 98111625 A CN98111625 A CN 98111625A CN 98111625 A CN98111625 A CN 98111625A CN 1082669 C CN1082669 C CN 1082669C
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Abstract
The present invention relates to an electronic geographic information positioning method and a device thereof, which relates to a method and a device used for designating the geographic position of a moving target in a city and providing other traffic information. The method comprises: a plurality of low power information transmitters and a network layout with vertical and horizontal structures are used for dividing a ground area into grids; an information transmitter is placed in a divided grid for continuously transmitting information codes so as to calibrate the geographic position of the information transmitter; in a certain grid, a receiver receives information transmitted by the information transmitter in the grid to obtain the X and Y coordinates of the geographic position of the grid of the information receiver and various prompts, and the coordinates and the prompts are displayed on a display.
Description
The present invention is a kind of geographic position that is used for indicating to the moving target in city its place, and the method and the device of other transport information are provided, and belongs to the technical field of electronic geographic-information location.
The method of carrying out the geography information location at present automobile in moving mainly is Global Positioning System (GPS) (GPS), the working method of this system is to adopt multi-satellite to send the information such as position, inclination angle and time of relevant satellite simultaneously earthward, be relevant datas such as ground longitude and latitude, elevation, direction of motion, speed, time by ground receiving system with these information translation then, be used for determining current position.Ground receiving system is positioned with dual mode: single-point location and difference location.The information that the single-point positioning instant is directly provided according to satellite by receiving element is determined oneself position.Difference location then is the information that receiving element provides according to satellite, and the control information that the reference ground satellite earth station provides is determined oneself position.The method bearing accuracy of difference location is higher than one-point positioning method.Though GPS provides a kind of method of location,, it is applied in also has some problems that are difficult to overcome at present, and especially in China, the GPS location also only is used to some special dimensions at present, also is difficult to use in civilian industry.It mainly is that reason by the following aspects causes: at first, and cost issues.The price of present GPS receiver is higher, and receiving antenna is had relatively high expectations, and the satnav receiving system price of a cover general precision is about 2000 yuan, and civilian industry is difficult to accept.For obtaining higher precision, need to adopt the difference localization method, this need drop into the special satellite earth station of a huge sum of money construction, and the such earth station of China is to count very little at present, and the short time can not solve.Secondly, China does not have the position location satellite of oneself, and what use at present is the satellite information that U.S.'s satellite is provided.Because perturbation technique adopt to be encrypted to satellite information by the U.S., conscious increasing positioning error makes the bearing accuracy of common receiving system at tens meters, even poorer.In case the generation accident is difficult to guarantee use effectively this cover system.The 3rd, for mobile surface targets, the consistance of its direction of motion and GPS direction of error and contrary and angular separation are at random, cause the uncertainty of error.The 4th, GPS provides bulk information, and common vehicle is not had practical significance, causes the waste of real cost.
Purpose of the present invention just provide the low reliability height of a kind of cost, location accurate provide the electronic geographic-information positioning method and the device of locating information and other relevant transport information to mobile surface targets.
Electronic geographic-information positioning method of the present invention is that many miniwatt information transmitters are arranged in the grid that ground is carried out grid dividing in length and breadth, a station information transmitter (1) is set in the grid that each is divided constantly launches message code the residing geographic position of this information transmitter is calibrated; Receiver receives the information of this grid internal information transmitter emission in some grids, " X " in the geographic position of this intelligence receiver grid of living in of obtaining reached " Y " coordinate and various prompting is presented on the display.The message code that information transmitter sends is formed by five sections, i.e. " X " coordinate code of city codes, division code, position, " Y " coordinate code of position, spreading code deposit these five sections codes in the information transmitter coding circuit chip.
When urban ground is carried out grid dividing, adopt the two-stage network, promptly macrolattice divides little grid then again with the city zoning in each district, and a station information transmitter is set in each little grid.Wherein city codes is represented the residing city of moving target, division code is represented the position in certain district (macrolattice) in the moving target city of living in, the X coordinate code of position and the Y coordinate code of position are represented the particular location in the little grid at moving target place, spreading code is used to represent some specific informations, such as one-way road, forbidden zone etc.For accuracy that guarantees to locate and the communication electric wave that does not disturb the city, the geography information transmitter is low power transmitter, and its emission radius generally is not more than 100 meters, and the spacing of little grid is greater than 2 times of the emission covering radius of geography information transmitter.The geography information locating device is made up of information radiating portion and message pick-up part, and the information transmitter of information radiating portion is made up of coding circuit, buffer circuit, modulation transmitter, and the output terminal of coding circuit is a circuit U
1" 10 " pin and the triode T in the buffer circuit
1Base stage join, the output terminal of buffer circuit is triode T
1Collector and the input end of modulation transmitter be integrated circuit U
2" 3 " pin join modulation circuit U
2Transmitting terminal be integrated circuit U
2" 9 " pin.
The invention has the advantages that
1. simple in structure batch process the in batches installed easily, and be cheap.At first, this cover system adopts the low power transmissions device, uses integrated circuit to constitute the main body of transmitter, and circuit structure is succinct, and Installation and Debugging are simple, and stable performance is easy to produce in batches, and its cost is equivalent to the price of the logical transistor radio of a Daepori.For a large size city that area is about 100 square kilometres, if with 60 meters be mesh spacing, about 22500 grid lattice points then will be arranged.Consider the scrambling in city, most of area of considering the city simultaneously is a buildings.Required position of layouting should be along the line at road, bridge, the outpost of the tax office, important goal or other places that need locate, and its sum of layouting can not surpass 10% of total grid lattice point.So required transmitter number is about 2000, the price of supposing transmitter is 50 yuan (these are the prices of over-evaluating), and 100,000 yuan of gross investments are equivalent to the price of 50 GPS receivers.In fact, this is a sizable city, and bearing accuracy very high (error≤20 meter).For in large-scale city, location about 200 meters requirement at interval (in fact, this precision of civilian industry is enough, and its bearing accuracy still can be smaller or equal to 20 meters), its investment will be at several ten thousand yuan.On the other hand, supporting with it receiver is not because of needing the complex decoding computing, and structure is also quite simple, and its complexity is also suitable with common radio, and its cost is very little.These all make this system be easy to accept with civilian industry, are easy to apply.Because circuit is simple, the size of transmitter and ordinary semiconductor radio are similar, and do not have other external environment condition requirement, and the installation of arranging net is very simple, does not need technical skill.
2. bearing accuracy height.Adopt low power transmitter, not only reduced cost, also reduced the influence of co-channel interference, improved bearing accuracy on the other hand.The signal covering radius that we design transmitter is generally less than 50 meters, and we think that 30 meters left and right sides are proper.It is suitable to install if layout, and can make moving target approximate along the radial direction sensing center of circle, i.e. transmitter position motion.No matter and from which direction enter the emission overlay area, always its direction is pointed to launching centre.In the city, under the normal condition, the travelling speed of vehicle is about 40 kilometers/hour, and per second moves 11 meters approximately, if need 1 second from receiving that geography information is finished to decoding, then this moment vehicle from the launching site distance less than 20 meters.If this system is used for the vehicle electronics map, when then map shows its position, will just in time be positioned at launching centre.Utilize such principle, improved bearing accuracy.
3. owing to include city or area code in the geographic information data, set up nationwide fixer network easily.When stolen or the vehicle of being robbed enter another city, send in the information in former city and will comprise this vehicle city, current place and position, be convenient to clear up a criminal case.
4. this cover system is the platform of a cheapness, is easy to develop on this platform multiple electronic product.Because geographic information data is simple in structure, easy and other electronic equipment interfaces are by various electronic is utilized.For example, vehicle-mounted receiver adds the computing display part of electronic chart, just becomes cheap vehicle electronics map, if the spreading code in the data structure is defined, then can become Vehicular navigation system again again; Automobile is anti-robs, burglary-resisting system, and vehicle-mounted receiver adds that the car status information dispensing device can realize alarm center control, or the like.Because infrastructure investment and application apparatus investment are all compared cheap.Therefore, and use other positioning systems as platform, and other conditions when identical relatively, use this system as platform, its economic benefit will improve greatly.
5. because emissive power is little, be the milliwatt level, can not cause the spacing wireless electropollution.
Fig. 1 is the schematic layout pattern of grid dividing of the present invention and information transmitter, receiver.
Fig. 2 is the structured flowchart of information transmitter of the present invention, and Fig. 3 is the electrical schematic diagram of information transmitter.
Fig. 4 is the structured flowchart of receiver of the present invention, and Fig. 5 is the electrical schematic diagram of receiver.
Embodiment of the present invention are as follows:
The geography information transmitter adopts low power transmitter, transmission frequency is 36MHZ, (this frequency can be selected else as required) emission radius is 30 meters, and this information transmitter 1 is made up of coding circuit 1-1, buffer circuit 1-2, modulation transmitter 1-3, and coding circuit 1-1 is mainly by integrated circuit U
1And peripheral circuit is formed integrated circuit U
1Adopt coding integrated circuit " MC68HC05K1 ", its output terminal is " 10 " pin of this integrated circuit, and this output terminal passes through resistance R
3With transistor T in the buffer circuit
1Base stage join, buffer circuit 1-2 is mainly by transistor T
1And peripheral circuit forms, and the input end of this buffer circuit is a transistor T
1Base stage, output terminal is a transistor T
1Collector.Modulation transmitter 1-3 is mainly by integrated circuit U
2And peripheral circuit is formed integrated circuit U
2Model be " MC2833 ", the input end of modulation transmitter 1-3 is integrated circuit U
2" 3 " pin, output terminal is integrated circuit U
2" 9 " pin, this integrated circuit U
2Output terminal and mutual inductor T directly join, antenna is penetrated in the other end sending and receiving of mutual inductor T.When this transmitter work, can in advance coded message be deposited in coding circuit 1-1, also can transmit the coded message that need send at any time by other opertaing device and circuit.The information of its storage is divided into five sections in coding circuit, and first section is city codes, and be about to each main cities of the whole nation and replace with coding, the corresponding one group of code in each city, the user just knows oneself to be in which city after receiving first group of code.Second section promptly is divided into some several big zones to the whole ground in city for area code (macroreticular code), after the user receives second section code, just can know oneself locates which zone in this city.The 3rd section, the 4th section for little grid is specific code of certain some X coordinate, Y coordinate in the city, after the user receives this code, just can know the specifically place accurately that oneself is in the city.Whether whether the 5th section is spreading code, indicates mainly whether this highway section is the forbidden zone, be parallel track, be current in limited time etc., and the user just can know the passage situation in this highway section after receiving this code.
Utilizing this method of installing its location and installation is with the grid layout of crossbar structure grid dividing to be carried out in the zone of urban ground, in the grid that is divided by actual needs a low power information transmitter is set, constantly launch 5 segment information codes, prompting with other relevant this section traffic information is calibrated in the residing position of this machine.On grid dividing, actual conditions according to avenue, the geography information transmitter is placed on the street on the grid, but not do not settle this transmitter on the grid of street part, the grid interval is greater than 2 times of transmitter emission covering radius, for the system of trueness error requirement less than 20 meters, the interval of its grid generally is not more than 200 meters and gets final product.
Claims (4)
1, a kind of electronic geographic-information positioning method, it is characterized in that many miniwatt information transmitters (1) are arranged in the grid that ground is carried out grid dividing in length and breadth, a station information transmitter (1) is set in each grid that is divided (3) constantly launches message code the residing geographic position of this information transmitter (1) is calibrated; Receiver (2) receives the information of this grid (3) internal information transmitter (1) emission in some grids (3), " X " in the geographic position of this intelligence receiver (2) grid of living in of obtaining reached " Y " coordinate and various prompting is presented on the display (2-4).
2, electronic geographic-information positioning method according to claim 1, it is characterized in that the message code that information transmitter (1) sends forms by five sections, be " X " coordinate code, " Y " coordinate code of position, the spreading code of city codes, division code, position, deposit these five sections codes in the information transmitter coding circuit chip.
3, according to claim 1 or 3 described electronic geographic-information positioning methods, when it is characterized in that urban ground network access lattice are divided, adopt the two-stage network, be that macrolattice is with the city zoning, in each district, divide little grid more then, a station information transmitter (1) is set in each little grid.
4, electronic geographic-information orientation method according to claim 1 and 2, it is characterized in that the geography information transmitter is low power transmitter, its emission radius generally is not more than 100 meters, and the spacing of little grid is greater than 2 times of the emission covering radius of geography information transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98111625A CN1082669C (en) | 1998-12-21 | 1998-12-21 | Electronic geographic-information positioning method and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98111625A CN1082669C (en) | 1998-12-21 | 1998-12-21 | Electronic geographic-information positioning method and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1222680A CN1222680A (en) | 1999-07-14 |
| CN1082669C true CN1082669C (en) | 2002-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98111625A Expired - Fee Related CN1082669C (en) | 1998-12-21 | 1998-12-21 | Electronic geographic-information positioning method and equipment |
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| Country | Link |
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| CN (1) | CN1082669C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1323281C (en) * | 2004-03-19 | 2007-06-27 | 李瑞强 | Method of indicating city location using position coded radio electronic signals and radio signal addressing system for city location |
| CN100433584C (en) * | 2005-02-25 | 2008-11-12 | 北京市东城区信息中心 | Urban managing information acquiring method and apparatus thereof |
| CN109335445B (en) * | 2018-10-13 | 2020-06-16 | 晋江易库物联网科技有限公司 | Goods scheduling method for intelligent warehouse |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2244748Y (en) * | 1995-04-03 | 1997-01-08 | 东南大学 | Dynamic fixed-point positioning monitor for city automobile |
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1998
- 1998-12-21 CN CN98111625A patent/CN1082669C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2244748Y (en) * | 1995-04-03 | 1997-01-08 | 东南大学 | Dynamic fixed-point positioning monitor for city automobile |
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| CN1222680A (en) | 1999-07-14 |
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