CN105912969A - Radio frequency positioning system with learning capability and positioning method thereof - Google Patents
Radio frequency positioning system with learning capability and positioning method thereof Download PDFInfo
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- CN105912969A CN105912969A CN201610381581.7A CN201610381581A CN105912969A CN 105912969 A CN105912969 A CN 105912969A CN 201610381581 A CN201610381581 A CN 201610381581A CN 105912969 A CN105912969 A CN 105912969A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10019—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers.
- G06K7/10079—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the spatial domain, e.g. temporary shields for blindfolding the interrogator in specific directions
- G06K7/10089—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the spatial domain, e.g. temporary shields for blindfolding the interrogator in specific directions the interrogation device using at least one directional antenna or directional interrogation field to resolve the collision
- G06K7/10099—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the spatial domain, e.g. temporary shields for blindfolding the interrogator in specific directions the interrogation device using at least one directional antenna or directional interrogation field to resolve the collision the directional field being used for pinpointing the location of the record carrier, e.g. for finding or locating an RFID tag amongst a plurality of RFID tags, each RFID tag being associated with an object, e.g. for physically locating the RFID tagged object in a warehouse
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisions for transferring data to distant stations, e.g. from a sensing device
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Abstract
The invention provides a radio frequency positioning system with a learning capability and a positioning method thereof, and relates to the technical field of positioning. The radio frequency positioning system is characterized in that the system comprises a label node, a coordinate reader-writer, a gateway node, a mobile end and a cloud end; the label node comprises a label controller and a label radio frequency transceiver module; the reader-writer comprises a reading-writing storage and calculation module, a reading-writing controller and a reading-writing radio frequency transceiver module; the gateway node comprises a communication interface, a micro-processor and a gateway radio frequency transceiver module; the cloud end comprises a cloud end analysis processor, a cloud end database and a cloud end data transmission module; and the mobile end comprises a mobile end data transmission module, a processor and an operation interface. The radio frequency positioning system has the advantages that the cost is low, the positioning is accurate, the algorithm trap is avoided, the learning capability is realized, and the practicability is high.
Description
Technical field
The present invention relates to field of locating technology, determine particularly to a kind of radio frequency possessing learning capacity
Position system and localization method.
Background technology
Along with the development of society, location technology increasingly receives publicity.Existing location technology is such as
The aspects such as GPS positions, infrared location etc., it is contemplated that precision, cost, feasibility, have one
Fixed limitation, the occasion of the meridian tyre especially blocked at some screens.RF identification
(RFID) location technology is with advantages such as its noncontact, high sensitivity and low costs, in this occasion
Under become a kind of important technology and select, more and more paid close attention to by people.
Will necessarily occur that in multi-tag alignment system multiple label produces with read write line communication simultaneously
The situation of raw signal collision.RFID multi-label anti-collision algorithm has multiple at present: multiple access technology,
ALOHA anti-collision algorithm, binary system anti-collision algorithm etc..Multiple access anti-collision algorithm is to increase
The complexity of adding system and raising cost are cost, and have the defect that cannot overcome；ALOHA prevents
Whether collision algorithm sometimes results in read write line and false judgment occurs, to certain label at read-write model
Enclose interior generation to judge by accident, there is also the problem that collision probability is bigger simultaneously；Simple binary system anti-collision
Hit algorithm and sometimes can not obtain good collision prevention effect.
The radio-frequency location system that the present invention uses has the advantage that
1, possess learning capacity: recorded the error of positioning result each time by high in the clouds, and fixed
Position judged result.Further fix time and carry out big data analysis in the cycle, draw difference expectation and
The expected value of judged result draws correction value after processing.This correction value can be supplied to move
Moved end is that location each time carries out precision calibration.
2, algorithm is advanced: alignment system relates to the real-time Communication for Power between multiple label and read write line,
Need to solve multi-tag identification signal collision problem.Have employed multi-tag identification collision algorithm, should
Algorithm has algorithm based on serial number to the sort algorithm of timeslot number computing and is easily achieved, responds speed
Degree is fast, execution efficiency high, is the one of time-division multiplexing method.Additionally, by specific
Location algorithm can simply calculate the position of location.
3, cost performance is high: compared with GPS location, infrared location；Radio frequency is used to position not only
Low cost and precision is the highest.Cost performance is the most reasonable comparatively speaking, and have the strongest can
Row and practicality.
Summary of the invention
In consideration of it, the invention provides a kind of radio-frequency location system possessing learning capacity and location
Method, this invention has: low cost, accurate positioning, algorithm trap, possess learning capacity,
The advantage such as practical.
The technical solution used in the present invention is as follows:
A kind of radio-frequency location system possessing learning capacity, it is characterised in that described system includes:
Label node, coordinate read write line, gateway node, mobile terminal and high in the clouds；Described label node bag
Include label controller and Tag Radio Frequency transceiver module；Described read write line includes: read-write storage meter
Calculate module, read-write controller and read-write radio transceiver module；Described gateway node includes: logical
Letter interface, microprocessor and gateway radio transceiver module；Described high in the clouds includes: high in the clouds is analyzed
Processor, cloud database and high in the clouds data transmission module；Described mobile terminal includes: mobile terminal
Data transmission module, processor and operation interface；
Described read-write storage computing module signal is connected to read-write controller；Described read-write controller
Signal is connected to read and write radio transceiver module；Described read-write radio transceiver module signal respectively
It is connected to gateway radio transceiver module and Tag Radio Frequency transceiver module；Described Tag Radio Frequency is received
Send out device module by signal and be connected to label controller；Described gateway radio transceiver module signal connects
In microprocessor；Described microprocessor signals is connected to communication interface；Described communication interface signal
It is connected to mobile terminal data transmission module；Data transmission module signal respectively in described mobile terminal connects
In processor and high in the clouds data transmission module；Described processor signal is connected to operate interface；Institute
State high in the clouds data transmission module signal and be connected to cloud database；Described cloud database signal is even
It is connected to high in the clouds analysis processor.
Described label controller uses Harvard bus structures, data/address bus and instruction bus is carried out
Separate, single byte and the monocycle all instructed can be realized；Described read-write controller is also adopted
Use Harvard bus structures, data/address bus and instruction bus are separated, can realize all instructing
Single byte and the monocycle；Described Tag Radio Frequency transceiver module, read-write RF transceiver
Module and gateway radio transceiver module can be joined by height integrated on main control chip and chip
The modem composition put.
Described mobile terminal data transmission module, is used for connecting mobile terminal and gateway, mobile terminal and cloud
Data transmission between end；Described processor is for being analyzed according to the data message received
Process, analysis processing result is sent to operating interface；Described operation interface, is used for showing and determines
Position result, it is judged that whether positioning result accurate, and can input positioning result and accurate result it
Between actual difference, will determine that result and difference through mobile data transfer module send to high in the clouds.
Described high in the clouds data transmission module, for connecting the data transmission between mobile terminal and high in the clouds；
Described cloud database, the judged result sended over from mobile terminal for storage and difference；
Described high in the clouds analysis processor, within the cycle time specified, to these judged results and
Difference is analyzed processing, and generates a correction algorithm according to analysis result, by correction algorithm
Send to mobile terminal；The detailed process that described correction algorithm generates comprises the following steps:
Step 1: the expected value of the difference received in calculating the cycle specified；
Step 2: statistics judged result within this formulation cycle is the expected value of inaccurate number of times；
Step 3: the expected value of difference is multiplied by the expected value that judged result is inaccurate number of times
As correction value；
Step 4: by correction value send to mobile terminal, mobile terminal when carrying out location Calculation next time,
Can be plus this correction value, regeneration positioning result on location Calculation final result.
A kind of based on the radio frequency location system possessing learning capacity one of Claims 1-4 Suo Shu
The localization method of system, it is characterised in that the localization method of described radio-frequency location system includes following
Step:
Step 1: system initialization, the radiofrequency signal between read write line and label passes through space coupling
Conjunction realizes the transmission of contactless information；
Step 2: read write line, by the radio communication with label, is calculated by multi-tag identification collision
Method obtains received signal strength indicator value, it may be assumed that RSSI value；
Step 3: obtain the coordinate figure of oneself of read write line, by the coordinate figure got and RSSI
Value is transferred to gateway；
Step 4: after gateway receives these data messages, sends data message to mobile terminal；
Step 5: mobile terminal uses location algorithm to calculate positioning result, is shown by positioning result
Illustrate.
Described multi-tag identification collision algorithm comprises the following steps:
Step 1: set contention timeslot number as T；In contention, first with label
Serial number determines label sending time slots in contention Frame divided by the remainder of T gained；
Step 2: then utilize tag serial number to determine that label is in contention frame divided by the business of T gained
The transmission position of interior corresponding time slot, during contention Frame corresponding then sent in contention
Gap sends position and fills data " 1 "；
Step 3: finally utilize the contention Frame filled to determine that label sends in whole data
Transmission order in cycle；Described transmission order is: it sends position and respectively sends in position
The sum of " 1 ", thus distribute different transmission timings to the label of different serial number.
Described location algorithm comprises the following steps:
Step 1: determine and accept signal intensity and signal transmission distance relation is:
RSSI=-(A+10nlog10D)-EAF；Wherein RSSI is received signal strength, D
Being distance week sending out between node, n is signal propagation factor；EAF is envirment factor；
Step 2: set read write line three positions as p1 (x1,y1)、p2(x2,y2)、p1(x3,y3)
Equation below is utilized to calculate the coordinate computing formula of label to be positioned:
Step 3: the coordinate position obtaining outgoing label is:
Use above technical scheme, present invention produces following beneficial effect:
1, possess learning capacity: recorded the error of positioning result each time by high in the clouds, and fixed
Position judged result.Further fix time and carry out big data analysis in the cycle, draw difference expectation and
The expected value of judged result draws correction value after processing.This correction value can be supplied to move
Moved end is that location each time carries out precision calibration.
2, algorithm is advanced: alignment system relates to the real-time Communication for Power between multiple label and read write line,
Need to solve multi-tag identification signal collision problem.Have employed multi-tag identification collision algorithm, should
Algorithm has algorithm based on serial number to the sort algorithm of timeslot number computing and is easily achieved, responds speed
Degree is fast, execution efficiency high, is the one of time-division multiplexing method.Additionally, by specific
Location algorithm can simply calculate the position of location.
3, cost performance is high: compared with GPS location, infrared location；Radio frequency is used to position not only
Low cost and precision is the highest.Cost performance is the most reasonable comparatively speaking, and have the strongest can
Row and practicality.
Accompanying drawing explanation
Fig. 1 is a kind of radio-frequency location system possessing learning capacity and the localization method of the present invention
System results schematic diagram.
Detailed description of the invention
All features disclosed in this specification, or disclosed all methods or during step,
In addition to mutually exclusive feature and/or step, all can combine by any way.
Any feature disclosed in this specification (including any accessory claim, summary),
Unless specifically stated otherwise, all can be by other equivalences or there is the alternative features of similar purpose replaced.
I.e., unless specifically stated otherwise, an example during each feature is a series of equivalence or similar characteristics
Son.
The embodiment of the present invention 1 provides a kind of radio-frequency location system possessing learning capacity, is
System structure as shown in Figure 1:
A kind of radio-frequency location system possessing learning capacity, it is characterised in that described system includes:
Label node, coordinate read write line, gateway node, mobile terminal and high in the clouds；Described label node bag
Include label controller and Tag Radio Frequency transceiver module；Described read write line includes: read-write storage meter
Calculate module, read-write controller and read-write radio transceiver module；Described gateway node includes: logical
Letter interface, microprocessor and gateway radio transceiver module；Described high in the clouds includes: high in the clouds is analyzed
Processor, cloud database and high in the clouds data transmission module；Described mobile terminal includes: mobile terminal
Data transmission module, processor and operation interface；
Described read-write storage computing module signal is connected to read-write controller；Described read-write controller
Signal is connected to read and write radio transceiver module；Described read-write radio transceiver module signal respectively
It is connected to gateway radio transceiver module and Tag Radio Frequency transceiver module；Described Tag Radio Frequency is received
Send out device module by signal and be connected to label controller；Described gateway radio transceiver module signal connects
In microprocessor；Described microprocessor signals is connected to communication interface；Described communication interface signal
It is connected to mobile terminal data transmission module；Data transmission module signal respectively in described mobile terminal connects
In processor and high in the clouds data transmission module；Described processor signal is connected to operate interface；Institute
State high in the clouds data transmission module signal and be connected to cloud database；Described cloud database signal is even
It is connected to high in the clouds analysis processor.
Described label controller uses Harvard bus structures, data/address bus and instruction bus is carried out
Separate, single byte and the monocycle all instructed can be realized；Described read-write controller is also adopted
Use Harvard bus structures, data/address bus and instruction bus are separated, can realize all instructing
Single byte and the monocycle；Described Tag Radio Frequency transceiver module, read-write RF transceiver
Module and gateway radio transceiver module can be joined by height integrated on main control chip and chip
The modem composition put.
Described mobile terminal data transmission module, is used for connecting mobile terminal and gateway, mobile terminal and cloud
Data transmission between end；Described processor is for being analyzed according to the data message received
Process, analysis processing result is sent to operating interface；Described operation interface, is used for showing and determines
Position result, it is judged that whether positioning result accurate, and can input positioning result and accurate result it
Between actual difference, will determine that result and difference through mobile data transfer module send to high in the clouds.
Described high in the clouds data transmission module, for connecting the data transmission between mobile terminal and high in the clouds；
Described cloud database, the judged result sended over from mobile terminal for storage and difference；
Described high in the clouds analysis processor, within the cycle time specified, to these judged results and
Difference is analyzed processing, and generates a correction algorithm according to analysis result, by correction algorithm
Send to mobile terminal；The detailed process that described correction algorithm generates comprises the following steps:
Step 1: the expected value of the difference received in calculating the cycle specified；
Step 2: statistics judged result within this formulation cycle is the expected value of inaccurate number of times；
Step 3: the expected value of difference is multiplied by the expected value that judged result is inaccurate number of times
As correction value；
Step 4: by correction value send to mobile terminal, mobile terminal when carrying out location Calculation next time,
Can be plus this correction value, regeneration positioning result on location Calculation final result.
The embodiment of the present invention 2 provides a kind of radio-frequency location system possessing learning capacity and
Localization method, system construction drawing as described in Figure 1:
A kind of radio-frequency location system possessing learning capacity, it is characterised in that described system includes:
Label node, coordinate read write line, gateway node, mobile terminal and high in the clouds；Described label node bag
Include label controller and Tag Radio Frequency transceiver module；Described read write line includes: read-write storage meter
Calculate module, read-write controller and read-write radio transceiver module；Described gateway node includes: logical
Letter interface, microprocessor and gateway radio transceiver module；Described high in the clouds includes: high in the clouds is analyzed
Processor, cloud database and high in the clouds data transmission module；Described mobile terminal includes: mobile terminal
Data transmission module, processor and operation interface；
Described read-write storage computing module signal is connected to read-write controller；Described read-write controller
Signal is connected to read and write radio transceiver module；Described read-write radio transceiver module signal respectively
It is connected to gateway radio transceiver module and Tag Radio Frequency transceiver module；Described Tag Radio Frequency is received
Send out device module by signal and be connected to label controller；Described gateway radio transceiver module signal connects
In microprocessor；Described microprocessor signals is connected to communication interface；Described communication interface signal
It is connected to mobile terminal data transmission module；Data transmission module signal respectively in described mobile terminal connects
In processor and high in the clouds data transmission module；Described processor signal is connected to operate interface；Institute
State high in the clouds data transmission module signal and be connected to cloud database；Described cloud database signal is even
It is connected to high in the clouds analysis processor.
Described label controller uses Harvard bus structures, data/address bus and instruction bus is carried out
Separate, single byte and the monocycle all instructed can be realized；Described read-write controller is also adopted
Use Harvard bus structures, data/address bus and instruction bus are separated, can realize all instructing
Single byte and the monocycle；Described Tag Radio Frequency transceiver module, read-write RF transceiver
Module and gateway radio transceiver module can be joined by height integrated on main control chip and chip
The modem composition put.
Described mobile terminal data transmission module, is used for connecting mobile terminal and gateway, mobile terminal and cloud
Data transmission between end；Described processor is for being analyzed according to the data message received
Process, analysis processing result is sent to operating interface；Described operation interface, is used for showing and determines
Position result, it is judged that whether positioning result accurate, and can input positioning result and accurate result it
Between actual difference, will determine that result and difference through mobile data transfer module send to high in the clouds.
Described high in the clouds data transmission module, for connecting the data transmission between mobile terminal and high in the clouds；
Described cloud database, the judged result sended over from mobile terminal for storage and difference；
Described high in the clouds analysis processor, within the cycle time specified, to these judged results and
Difference is analyzed processing, and generates a correction algorithm according to analysis result, by correction algorithm
Send to mobile terminal；The detailed process that described correction algorithm generates comprises the following steps:
Step 1: the expected value of the difference received in calculating the cycle specified；
Step 2: statistics judged result within this formulation cycle is the expected value of inaccurate number of times；
Step 3: the expected value of difference is multiplied by the expected value that judged result is inaccurate number of times
As correction value；
Step 4: by correction value send to mobile terminal, mobile terminal when carrying out location Calculation next time,
Can be plus this correction value, regeneration positioning result on location Calculation final result.
A kind of based on the radio frequency location system possessing learning capacity one of Claims 1-4 Suo Shu
The localization method of system, it is characterised in that the localization method of described radio-frequency location system includes following
Step:
Step 1: system initialization, the radiofrequency signal between read write line and label passes through space coupling
Conjunction realizes the transmission of contactless information；
Step 2: read write line, by the radio communication with label, is calculated by multi-tag identification collision
Method obtains received signal strength indicator value, it may be assumed that RSSI value；
Step 3: obtain the coordinate figure of oneself of read write line, by the coordinate figure got and RSSI
Value is transferred to gateway；
Step 4: after gateway receives these data messages, sends data message to mobile terminal；
Step 5: mobile terminal uses location algorithm to calculate positioning result, is shown by positioning result
Illustrate.
Described multi-tag identification collision algorithm comprises the following steps:
Step 1: set contention timeslot number as T；In contention, first with label
Serial number determines label sending time slots in contention Frame divided by the remainder of T gained；
Step 2: then utilize tag serial number to determine that label is in contention frame divided by the business of T gained
The transmission position of interior corresponding time slot, during contention Frame corresponding then sent in contention
Gap sends position and fills data " 1 "；
Step 3: finally utilize the contention Frame filled to determine that label sends in whole data
Transmission order in cycle；Described transmission order is: it sends position and respectively sends in position
The sum of " 1 ", thus distribute different transmission timings to the label of different serial number.
Described location algorithm comprises the following steps:
Step 1: determine and accept signal intensity and signal transmission distance relation is:
RSSI=-(A+10nlog10D)-EAF；Wherein RSSI is received signal strength, D
Being distance week sending out between node, n is signal propagation factor；EAF is envirment factor；
Step 2: set read write line three positions as p1 (x1,y1)、p2(x2,y2)、p1(x3,y3)
Equation below is utilized to calculate the coordinate computing formula of label to be positioned:
Step 3: the coordinate position obtaining outgoing label is:
The embodiment of the present invention 3 provides a kind of intelligent vehicle air bag system and control
Method, system structure as shown in Figure 1:
A kind of radio-frequency location system possessing learning capacity, it is characterised in that described system includes:
Label node, coordinate read write line, gateway node, mobile terminal and high in the clouds；Described label node bag
Include label controller and Tag Radio Frequency transceiver module；Described read write line includes: read-write storage meter
Calculate module, read-write controller and read-write radio transceiver module；Described gateway node includes: logical
Letter interface, microprocessor and gateway radio transceiver module；Described high in the clouds includes: high in the clouds is analyzed
Processor, cloud database and high in the clouds data transmission module；Described mobile terminal includes: mobile terminal
Data transmission module, processor and operation interface；
Described read-write storage computing module signal is connected to read-write controller；Described read-write controller
Signal is connected to read and write radio transceiver module；Described read-write radio transceiver module signal respectively
It is connected to gateway radio transceiver module and Tag Radio Frequency transceiver module；Described Tag Radio Frequency is received
Send out device module by signal and be connected to label controller；Described gateway radio transceiver module signal connects
In microprocessor；Described microprocessor signals is connected to communication interface；Described communication interface signal
It is connected to mobile terminal data transmission module；Data transmission module signal respectively in described mobile terminal connects
In processor and high in the clouds data transmission module；Described processor signal is connected to operate interface；Institute
State high in the clouds data transmission module signal and be connected to cloud database；Described cloud database signal is even
It is connected to high in the clouds analysis processor.
Described label controller uses Harvard bus structures, data/address bus and instruction bus is carried out
Separate, single byte and the monocycle all instructed can be realized；Described read-write controller is also adopted
Use Harvard bus structures, data/address bus and instruction bus are separated, can realize all instructing
Single byte and the monocycle；Described Tag Radio Frequency transceiver module, read-write RF transceiver
Module and gateway radio transceiver module can be joined by height integrated on main control chip and chip
The modem composition put.
Described mobile terminal data transmission module, is used for connecting mobile terminal and gateway, mobile terminal and cloud
Data transmission between end；Described processor is for being analyzed according to the data message received
Process, analysis processing result is sent to operating interface；Described operation interface, is used for showing and determines
Position result, it is judged that whether positioning result accurate, and can input positioning result and accurate result it
Between actual difference, will determine that result and difference through mobile data transfer module send to high in the clouds.
Described high in the clouds data transmission module, for connecting the data transmission between mobile terminal and high in the clouds；
Described cloud database, the judged result sended over from mobile terminal for storage and difference；
Described high in the clouds analysis processor, within the cycle time specified, to these judged results and
Difference is analyzed processing, and generates a correction algorithm according to analysis result, by correction algorithm
Send to mobile terminal；The detailed process that described correction algorithm generates comprises the following steps:
Step 1: the expected value of the difference received in calculating the cycle specified；
Step 2: statistics judged result within this formulation cycle is the expected value of inaccurate number of times；
Step 3: the expected value of difference is multiplied by the expected value that judged result is inaccurate number of times
As correction value；
Step 4: by correction value send to mobile terminal, mobile terminal when carrying out location Calculation next time,
Can be plus this correction value, regeneration positioning result on location Calculation final result.
A kind of based on the radio frequency location system possessing learning capacity one of Claims 1-4 Suo Shu
The localization method of system, it is characterised in that the localization method of described radio-frequency location system includes following
Step:
Step 1: system initialization, the radiofrequency signal between read write line and label passes through space coupling
Conjunction realizes the transmission of contactless information；
Step 2: read write line, by the radio communication with label, is calculated by multi-tag identification collision
Method obtains received signal strength indicator value, it may be assumed that RSSI value；
Step 3: obtain the coordinate figure of oneself of read write line, by the coordinate figure got and RSSI
Value is transferred to gateway；
Step 4: after gateway receives these data messages, sends data message to mobile terminal；
Step 5: mobile terminal uses location algorithm to calculate positioning result, is shown by positioning result
Illustrate.
Described multi-tag identification collision algorithm comprises the following steps:
Step 1: set contention timeslot number as T；In contention, first with label
Serial number determines label sending time slots in contention Frame divided by the remainder of T gained；
Step 2: then utilize tag serial number to determine that label is in contention frame divided by the business of T gained
The transmission position of interior corresponding time slot, during contention Frame corresponding then sent in contention
Gap sends position and fills data " 1 "；
Step 3: finally utilize the contention Frame filled to determine that label sends in whole data
Transmission order in cycle；Described transmission order is: it sends position and respectively sends in position
The sum of " 1 ", thus distribute different transmission timings to the label of different serial number.
Described location algorithm comprises the following steps:
Step 1: determine and accept signal intensity and signal transmission distance relation is:
RSSI=-(A+10nlog10D)-EAF；Wherein RSSI is received signal strength, D
Being distance week sending out between node, n is signal propagation factor；EAF is envirment factor；
Step 2: set read write line three positions as p1 (x1,y1)、p2(x2,y2)、p1(x3,y3)
Equation below is utilized to calculate the coordinate computing formula of label to be positioned:
Step 3: the coordinate position obtaining outgoing label is:
The error of positioning result each time, and location determination result is recorded by high in the clouds.The most certain
Carry out big data analysis in time cycle, show that the expectation of difference and the expected value of judged result enter
Row draws correction value after processing.It is location each time that this correction value can be supplied to mobile terminal
Carry out precision calibration.
Have employed multi-tag identification collision algorithm, this algorithm based on serial number to timeslot number computing
Sort algorithm have algorithm be easily achieved, fast response time, execution efficiency high, when being
Divide the one of multiplexing method.Additionally, can simply be calculated by specific location algorithm
The position of location.
Use radio frequency position not only low cost and also precision is the highest.Cost performance is the most comparatively speaking
Rationally, and there is the strongest feasibility and practicality.
The invention is not limited in aforesaid detailed description of the invention.The present invention expands to any in this explanation
In book disclose new feature or any new combination, and disclose arbitrary new method or process
Step or any new combination.
Claims (7)
1. the radio-frequency location system possessing learning capacity, it is characterised in that described system includes: label node, coordinate read write line, gateway node, mobile terminal and high in the clouds；Described label node includes label controller and Tag Radio Frequency transceiver module；Described read write line includes: read-write storage computing module, read-write controller and read-write radio transceiver module；Described gateway node includes: communication interface, microprocessor and gateway radio transceiver module；Described high in the clouds includes: high in the clouds analysis processor, cloud database and high in the clouds data transmission module；Described mobile terminal includes: mobile terminal data transmission module, processor and operation interface；
Described read-write storage computing module signal is connected to read-write controller；Described read-write controller signal is connected to read and write radio transceiver module；Described read-write radio transceiver module signal respectively is connected to gateway radio transceiver module and Tag Radio Frequency transceiver module；Described Tag Radio Frequency transceiver module signal is connected to label controller；Described gateway radio transceiver module signal is connected to microprocessor；Described microprocessor signals is connected to communication interface；Described communication interface signal is connected to mobile terminal data transmission module；Described mobile terminal data transmission module signal respectively is connected to processor and high in the clouds data transmission module；Described processor signal is connected to operate interface；Described high in the clouds data transmission module signal is connected to cloud database；Described cloud database signal is connected to high in the clouds analysis processor.
Possesses the radio-frequency location system of learning capacity the most as claimed in claim 1, it is characterised in that described label controller uses Harvard bus structures, data/address bus and instruction bus is separated, can realize single byte and the monocycle all instructed；Described read-write controller is also adopted by Harvard bus structures, data/address bus and instruction bus is separated, and can realize single byte and the monocycle all instructed；Described Tag Radio Frequency transceiver module, read-write radio transceiver module and gateway radio transceiver module are by highly configurable modem composition integrated on main control chip and chip.
Possesses the radio-frequency location system of learning capacity the most as claimed in claim 2, it is characterised in that described mobile terminal data transmission module, for connecting the data transmission between mobile terminal and gateway, mobile terminal and high in the clouds；Analysis processing result, for being analyzed process according to the data message received, is sent to operating interface by described processor；Described operation interface, is used for showing positioning result, it is judged that positioning result is the most accurate, and can input the actual difference between positioning result and accurate result, will determine that result and difference send to high in the clouds through mobile data transfer module.
Possesses the radio-frequency location system of learning capacity the most as claimed in claim 3, it is characterised in that described high in the clouds data transmission module, for connecting the data transmission between mobile terminal and high in the clouds；Described cloud database, the judged result sended over from mobile terminal for storage and difference；These judged results and difference, within the cycle time specified, are analyzed processing, and generate a correction algorithm according to analysis result, send correction algorithm to mobile terminal by described high in the clouds analysis processor；The detailed process that described correction algorithm generates comprises the following steps:
Step 1: the expected value of the difference received in calculating the cycle specified；
Step 2: statistics judged result within this formulation cycle is the expected value of inaccurate number of times；
Step 3: the expected value of difference is multiplied by expected value that judged result is inaccurate number of times as correction value；
Step 4: send correction value to mobile terminal, mobile terminal, can be plus this correction value, regeneration positioning result on location Calculation final result when carrying out location Calculation next time.
5. a localization method based on the radio-frequency location system possessing learning capacity one of Claims 1-4 Suo Shu, it is characterised in that the localization method of described radio-frequency location system comprises the following steps:
Step 1: system initialization, the radiofrequency signal between read write line and label realizes contactless information by Space Coupling and transmits；
Step 2: read write line, by the radio communication with label, obtains received signal strength indicator value by multi-tag identification collision algorithm, it may be assumed that RSSI value；
Step 3: obtain the coordinate figure of oneself of read write line, the coordinate figure got and RSSI value are transferred to gateway；
Step 4: after gateway receives these data messages, sends data message to mobile terminal；
Step 5: mobile terminal uses location algorithm to calculate positioning result, is shown by positioning result.
Possess the radio frequency positioning method of learning capacity the most as claimed in claim 5, it is characterised in that described multi-tag identification collision algorithm comprises the following steps:
Step 1: set contention timeslot number as T；In contention, determine label sending time slots in contention Frame first with tag serial number divided by the remainder of T gained；
Step 2: then utilize tag serial number to determine that label transmission position of corresponding time slot in contention frame, the corresponding time slot of the contention Frame then sent in contention send position and fill data " 1 " divided by the business of T gained；
Step 3: finally utilize the contention Frame filled to determine label transmission order in whole data transmitting period；Described transmission is sequentially: it sends position and respectively sends the sum of " 1 " in position, thus distributes different transmission timings to the label of different serial numbers.
Possess the radio frequency positioning method of learning capacity the most as claimed in claim 6, it is characterised in that described location algorithm comprises the following steps:
Step 1: determine and accept signal intensity and signal transmission distance relation is:
RSSI=-(A+10n log10D)-EAF；Wherein RSSI is received signal strength, and D is distance week sending out between node, and n is signal propagation factor；EAF is envirment factor；
Step 2: set read write line three positions as p1 (x1,y1)、p2(x2,y2)、p1(x3,y3) utilize equation below to calculate the coordinate computing formula of label to be positioned:
Step 3: the coordinate position obtaining outgoing label is:
。
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