CN111897902A - LBS and GIS based accurate positioning method, device and storage medium - Google Patents
LBS and GIS based accurate positioning method, device and storage medium Download PDFInfo
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Abstract
The invention discloses an accurate positioning method based on LBS and GIS, which comprises the following steps: and carrying out multiple position fuzzy matching optimization on the position information of the alarm person by combining LBS, GIS and voice recognition technologies, and finally obtaining the accurate position of the alarm person. An apparatus, comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program being executed by the processor for performing the above method. A computer readable storage medium storing one or more programs which, when executed by a server comprising a plurality of application programs, cause the server to perform the above-described method. The invention reduces the waste of first-aid time in the process of receiving the alarm and inquiring, and improves the first-aid treatment rate of 120 first-aid outgoing.
Description
Technical Field
The invention relates to the technical field of voice recognition, in particular to an accurate positioning method, an accurate positioning device and a storage medium based on LBS and GIS.
Background
When a telephone operator of a 120 emergency center receives an emergency call of a citizen, if the other party makes a call with a mobile phone, the first problem is how to quickly and accurately locate the position of the citizen.
In general, an operator needs to know the approximate position reported by the citizen by repeatedly inquiring the information such as which area, which main road, which cell, etc. the other party is in through the telephone with the citizen, and if the citizen is not familiar with the surrounding roads and cells and it is difficult to say the specific position, the operator is generally provided with the name of a certain high-rise, etc., so that the operator is required to be familiar with the positions of the main roads, cells, commercial districts, industrial districts, etc. in the urban area and to know the significant buildings such as the main high-rise in the urban area. With the development of cities and the rapid development and change of the construction of urban roads and cells, telephone operators can hardly remember the information needed to be mastered when receiving the alarm. This is a problem faced by operators to ask police to ask citizens' locations.
Secondly, the homophones of the Chinese characters are many, even if the telephone operator listens to the statements said by citizens, the telephone operator can ask which character in the homophones again.
The most precious gold rescue time in 120 emergency treatment is 5-10 minutes, and at present, a telephone operator in a 120 emergency treatment center can only confirm the specific position of an alarming citizen in an inquiring way, so that the precious rescue time is wasted, and on the other hand, the situation that confirmed position information is inaccurate exists, so that the ambulance quickly arrives at the site is influenced, and the rescue time is also wasted. For such current situation, when the telephone operator of the 120 emergency center connects the emergency call dialed by the citizen through the mobile phone, the telephone operator cannot accurately and quickly confirm the position information of the citizen through technical means.
Disclosure of Invention
In order to solve the technical problems, the invention provides an accurate positioning method, an accurate positioning device and a storage medium based on LBS and GIS.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the accurate positioning method based on LBS and GIS comprises the following steps:
acquiring the approximate position of the alarm person through LBS, displaying the approximate position on an electronic map in a circular area by combining a GIS system, and acquiring the initial positioning area information of the alarm person by taking the radius of the circular area as the coverage radius of an access base station;
performing voice recognition word segmentation on voice position information provided by an alarm through a voice recognition technology;
extracting key position information from the identification result, performing GIS spatial data retrieval in the preliminarily determined region, and storing the retrieval result into an accurate positioning analysis queue;
and based on basic position information provided by LBS, combining the results of multiple GIS spatial data retrieval to perform spatial analysis, eliminating invalid data by adopting a multiple position fuzzy matching algorithm, and selecting position information with high precision range according to weight from multiple groups of data with high spatial position coincidence degree as a final accurate positioning position.
Preferably, the speech recognition segmentation is to perform position information element recognition in a GIS information professional lexicon according to the pinyin sequence in the recognized speech, and bring the recognition result into an accurate positioning retrieval queue.
Preferably, the key location information includes name information of roads, buildings, cells, and the like in the voice information.
Preferably, the method further comprises the following steps: and displaying the final accurate positioning position information on an electronic map.
Preferably, the method for acquiring the contact ratio includes performing occupation analysis and buffer analysis on the spatial elements in the preliminary positioning area and the accurate positioning retrieval queue, and generating the contact ratio of the spatial elements according to spatial proximity and proximity of the spatial elements according to the results of the occupation analysis and the buffer analysis.
Preferably, the method for acquiring the position information with the high selection precision range includes presetting different matching weight coefficients for different types of the spatial elements in the search result, calculating the positioning selection priority of each spatial element according to the coincidence degree of the spatial elements and by combining the matching weight coefficients of each spatial element, and taking the position information with the highest priority as the position information with the high precision range.
Preferably, the calculation formula of the priority is as follows: and A is (m × n), wherein m is a matching weight coefficient, and n is a contact ratio.
Preferably, the different types of spatial elements comprise points, lines, faces.
An apparatus, comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program being executed by the processor for performing the above method.
A computer readable storage medium storing one or more programs which, when executed by a server comprising a plurality of application programs, cause the server to perform the above-described method.
Based on the technical scheme, the invention has the beneficial effects that: the method is used for rapidly and accurately acquiring the position information of the citizen by using the method after the telephone operator of the 120 first-aid center connects the first-aid call. The current situation that the positions of citizens can only be obtained in a manual inquiry mode and the obtained position information is inaccurate is changed. Thereby reducing the waste of first-aid time in the process of receiving the alarm and inquiring and improving the first-aid treatment rate of 120 first-aid outgoing.
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FIG. 1: the invention is based on the flow chart of the LBS and GIS accurate positioning method;
FIG. 2: the invention relates to a flow chart of a multiple-position fuzzy matching algorithm in an accurate positioning method based on LBS and GIS.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example one
1. About LBS
Location Based Services (LBS) refers to a service developed around geographical Location data, which is used by a mobile terminal using a wireless communication network, Based on a spatial database, to acquire and integrate geographical Location coordinate information of a user with other information to provide the user with a desired Location-related value-added service.
The positioning technology adopted by the mobile operators at present is position information based on a mobile communication base station Cell ID, the positioning technology has large error, the positioning error depends on the coverage range of the base station and the influence of high-rise buildings on wireless signals in a busy commercial area, the coverage radius of one base station is generally within 400 meters, and the coverage radius is between 1 and 2 kilometers in suburbs and rural areas. The coverage radius determines the accuracy of location services provided by the mobile operator.
2. About GIS
The Geographic Information System (GIS) is a software system which is widely applied and mature in technology and is used for storing, retrieving, analyzing, managing and displaying spatial data related to geographic spatial positions at present. Currently, there are a plurality of software companies at home and abroad providing commercial GIS systems, in which the above management functions and software development interfaces of the perfect spatial data are provided.
3. Relating to speech recognition
Speech Recognition technology, also known as Automatic Speech Recognition (ASR), aims at converting the vocabulary content in human Speech into computer-readable input, such as binary codes or character sequences. With the rapid development of artificial intelligence and neural network technology in recent years, the accuracy of speech recognition is correspondingly and rapidly improved by means of the artificial intelligence technology. Speech recognition technology has developed to date, and the recognition accuracy, particularly the recognition accuracy of a medium-small vocabulary non-specific human speech recognition system, is greater than 98%.
As shown in FIGS. 1 and 2, the accurate positioning method based on LBS and GIS carries out multi-position fuzzy matching optimization on the position information of the alarm person by combining LBS, GIS and voice recognition technology, and finally obtains the accurate position of the alarm person. The telephone operator can confirm step by step according to the prompt on the electronic map while obtaining the accurate position of the alarm person, and finally, the position of the alarm person can be confirmed quickly. The method comprises the following specific steps:
(1) and when the 120 emergency center accesses the telephone of the alarm person, acquiring latitude and longitude coordinates in LBS information of the access telephone according to LBS provided by a mobile operator according to CELL ID, converting the coordinates (if needed), calibrating the coordinate point on an electronic map, acquiring the approximate position of the alarm person, combining a GIS system, displaying the approximate range of the alarm person on the electronic map by using a circular area, wherein the radius of the circular area is the coverage radius of an access base station, drawing the circular area within the coverage range of the base station (the radius of 400 m in a downtown area, the radius of 2km in a suburb area and a rural area), and displaying the initial positioning area information of the alarm person.
(2) When inquiring the position of an alarm, a telephone operator carries out voice recognition word segmentation according to position information described in the call process of the alarm, carries out position information element recognition in a GIS information professional lexicon according to the recognized pinyin sequence, and brings the pinyin sequence word segmentation into an accurate positioning retrieval queue if the pinyin sequence word segmentation is successfully matched in the GIS information professional lexicon; if the matching is unsuccessful, the word segmentation is discarded. And a GIS information-based professional lexicon is preferentially used during recognition, so that the influence of homophones on recognition of position information in the voice data is reduced.
(3) Carrying out spatial data retrieval on each key position information (name information of roads, buildings, cells and the like) of the accurate positioning retrieval queue according to basic geographic spatial position information in a GIS system platform, and storing retrieval results into an accurate positioning analysis queue if a plurality of results are possibly retrieved in a GIS database according to information of roads, buildings, cells and the like described by an alarm person; if the space element is not searched, the space element is regarded as invalid data in the current recognition, and the space element is discarded.
(4) And performing superposition calculation on the results of the multiple GIS spatial data retrieval by using the spatial analysis capability provided by the GIS system platform on the basis of the basic position information provided by the LBS. And carrying out occupation analysis and buffer area analysis on the space elements in the primary positioning area and the accurate positioning analysis queue. And generating element contact ratio information for the spatial proximity and the proximity degree of each spatial element according to the occupation analysis result and the buffer area analysis result.
(5) And carrying out multi-position fuzzy matching. Different matching weight coefficients are preset for different types (points, lines and surfaces) of the space elements. According to the coincidence degree of the spatial elements and the matching weight coefficient of each element, the positioning selection priority of each spatial element is calculated according to a formula accurate positioning priority A (weight coefficient m is coincidence degree n), the highest priority is the final positioning result of the accurate positioning, namely the final accurate positioning position information, the final accurate positioning position information is marked on an electronic map, and the telephone operator and the alarm person perform final confirmation to complete the confirmation of the position information of the alarm person. The matching weight coefficient can be adjusted by manual optimization.
By adopting the method and the system, when a telephone operator of the 120 emergency center answers an alarm call, the telephone operator does not need to repeatedly inquire which area, which road and what remarkable mark is around the citizen, and simultaneously does not need to repeatedly confirm which character in homophones is in the position information described by the alarm person. In the normal process of inquiry, the operator can gradually see the specific position of accurate positioning on the electronic map, only the operator needs to finally confirm the position information with the alarm, and when the position information is confirmed, the electronic map is used as a visual confirmation basis, so that the condition of position confirmation errors in the past is greatly reduced. The traditional inquiry and dialogue mode generally needs 3-5 minutes to clearly alarm the position information of a person, and by using the technical invention, the positioning can be carried out in about 1 minute, and the positioning accuracy is greatly improved.
An apparatus, comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program being executed by the processor for performing the above method.
A computer readable storage medium storing one or more programs which, when executed by a server comprising a plurality of application programs, cause the server to perform the above-described method.
The above description is only for the description of the preferred embodiments of the present invention, and is not intended to limit the scope of the embodiments of the present invention. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the embodiments of the present disclosure should be included in the protection scope of the embodiments of the present disclosure.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present specification are all described in a progressive manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
Claims (10)
1. The accurate positioning method based on LBS and GIS is characterized by comprising the following steps:
acquiring the approximate position of the alarm person through LBS, displaying the approximate position on an electronic map in a circular area by combining a GIS system, and acquiring the initial positioning area information of the alarm person by taking the radius of the circular area as the coverage radius of an access base station;
performing voice recognition word segmentation on voice position information provided by an alarm through a voice recognition technology;
extracting key position information from the identification result, performing GIS spatial data retrieval in the preliminarily determined region, and storing the retrieval result into an accurate positioning analysis queue;
and based on basic position information provided by LBS, combining the results of multiple GIS spatial data retrieval to perform spatial analysis, eliminating invalid data by adopting a multiple position fuzzy matching algorithm, and selecting position information with high precision range according to weight from multiple groups of data with high spatial position coincidence degree as a final accurate positioning position.
2. The accurate positioning method based on LBS and GIS according to claim 1, wherein said speech recognition segmentation is to perform position information element recognition in GIS information professional lexicon according to the pinyin sequence in the recognized speech, and to bring the recognition result into the accurate positioning search queue.
3. The LBS and GIS based precise positioning method according to claim 1, wherein said key location information includes name information of roads, buildings, cells, etc. in voice information.
4. The accurate positioning method based on LBS and GIS according to claim 1, further comprising the steps of: and displaying the final accurate positioning position information on an electronic map.
5. The LBS and GIS based precise positioning method according to claim 1, wherein the contact degree obtaining method comprises performing a pressure occupancy analysis and a buffer analysis on the spatial elements in the preliminary positioning area and the precise positioning search queue, and generating contact degrees of the spatial elements according to spatial proximity and proximity of the spatial elements according to results of the pressure occupancy analysis and the buffer analysis.
6. The LBS and GIS based precise positioning method according to claim 5, wherein the method for obtaining the position information with high selection precision range is to preset different matching weight coefficients for different types of spatial elements in the search result, calculate the positioning selection priority of each spatial element according to the coincidence degree of the spatial elements and by combining the matching weight coefficients of each spatial element, and take the position information with highest priority as the position information with high precision range.
7. The LBS and GIS based accurate positioning method according to claim 6, wherein said priority is calculated by the formula: a ═ m × n,
wherein m is a matching weight coefficient, and n is a contact ratio.
8. The LBS and GIS based precise positioning method according to claim 5, wherein said different types of spatial elements include points, lines, planes.
9. An apparatus, comprising: memory, processor and computer program stored on the memory and executable on the processor, the computer program being executed by the processor for performing the method of any of claims 1-8.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores one or more programs which, when executed by a server comprising a plurality of application programs, cause the server to perform the method of any one of claims 1-8.
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