CN102306264A - Radio frequency identification (RFID)-technology-based indoor positioning system - Google Patents
Radio frequency identification (RFID)-technology-based indoor positioning system Download PDFInfo
- Publication number
- CN102306264A CN102306264A CN201110147718A CN201110147718A CN102306264A CN 102306264 A CN102306264 A CN 102306264A CN 201110147718 A CN201110147718 A CN 201110147718A CN 201110147718 A CN201110147718 A CN 201110147718A CN 102306264 A CN102306264 A CN 102306264A
- Authority
- CN
- China
- Prior art keywords
- positioning
- data
- rfid
- subsystem
- reader
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a radio frequency identification (RFID)-technology-based indoor positioning system. The system comprises an equipment management subsystem, a complex event processing subsystem, a real-time positioning subsystem, a track tracing subsystem and a mobile service subsystem. The system has the advantages that: the position of a moving object is obtained by structuring virtual reference label space in a positioning area by utilizing a classic signal propagation model, calculating a received signal strength indicator (RSSI) value by utilizing a reference label RSSI value based on a ranging mode, estimating an environment variable by adopting a classic logarithmic path loss model, structuring a virtual reference label matrix, and obtaining the RSSI value of the virtual reference label by using a weighted average value. Simultaneously, the problem that the positioning precision of the conventional RFID positioning system is distorted out of the area structured by the reference label; and single real-time positioning provided for a user is converted into a plurality of services such as real-time positioning, target tracing and the like provided for the user.
Description
Technical field
The invention belongs to the REID field, relate to a kind of indoor locating system based on the RFID technology.
Background technology
Indoor locating system is a kind of positioning system that proposes with respect to outdoor GPS (GPS); Because it is very faint that GPS locatees needed satellite-signal; In indoor environment; Basically can not successfully locate; So the positioning system that is suitable for indoor wireless environments will remedy this vacancy in the wireless positioning field.
In the last few years; Because advantages such as identification of the non line of sight of REID (RFID) and RFID label low cost; The RFID technology becomes the one preferred technique of high precision, low cost, extensive target indoor positioning; Therefore; Indoor locating system based on RFID emerges in an endless stream; But existing indoor locating system based on the RFID technical design; On key issues such as system reliability, locator meams, bearing accuracy, location efficiency, also exist problems, these factors have caused existing relatively poor based on the indoor locating system bearing accuracy of RSSI.The scale of existing indoor locating system is less relatively in addition, and extensibility is relatively poor.The part indoor locating system adopts the method for disposing reference label to improve and uses the RSSI locating accuracy, but system performance receives reference label density, disposes the influence of layout, is not suitable for actual application demand.
Indoor positioning recognition technology based on RFID mainly contains LANDMARK and SpotON at present.SpotON derives the relation of decipherment distance and signal power according to measurement data, adopts the triangle location algorithm to realize the location of three dimensions object, and the bearing accuracy of this system is affected by environment bigger.Propagate the characteristics of non line of sight serious interference to indoor wireless; The LANDMARK system introduces reference label; Adopt nearest-neighbors data related algorithm to improve the bearing accuracy of system; The raising of its bearing accuracy mainly depends on the quantity of reference label; But the increase of reference label quantity can cause signal stronger between the equipment and disturb; Therefore, for developing low-cost, high-precision indoor locating system is also improper.
Summary of the invention
The purpose of this invention is to provide a kind of indoor locating system based on the RFID technology; Overcome the deficiency of aspects such as existing RFID positioning system is single in location-based service, a large amount of RFID equipment of deployment produce the signal interference bearing accuracy each other; Through in locating area, making up the fixer network that virtual reference label, reference label and reader combine; Make positioning system dispose flexibly; Expanded the locating area scope simultaneously; Improve indoor position accuracy, reduced the system constructing cost.
The technical scheme that the present invention adopted is; A kind of indoor locating system based on the RFID technology; Comprise that The equipment management subsystem, complicated event processing subsystem, real-time positioning subsystem, trace review subsystem, move service subsystem, the function of each sub-systems is respectively:
RFID equipment control in the described The equipment management subsystem is used for management service that reader, reference label, mobile device are carried out basic increase, deletion, modification; And be responsible for safeguarding the facility information storehouse in the real-time positioning subsystem; Also the current device duty is monitored in real time, alarm prompt is provided faulty equipment;
Described complicated event processing subsystem function comprises from reader carries out data acquisition; Carry out the processing of data filter, incident reduction, event filtering, composition of matter, event matches and incident distribution again; Result is divided into that real-time event is handled and two types of non real-time event handlings; This complicated event processing subsystem with the full texture of total system service logic with link together; The complicated event processing subsystem has improved the data-handling efficiency of whole positioning system, has improved the reliability of system;
The real-time positioning subsystem is the core of the system, in which the device information library, enter a device management provides information on working status of each device, positioning strategy library stores a plurality of positioning algorithms, real-time positioning subsystem based on complex event processing subsystem to deliver real-time event processing flow of events, the basic data flow, according to different service requirements and positioning strategy library, select the appropriate algorithm for real-time event processing, and the calculation result information into deeds repository and positioning tracking, location tracking line trace analysis recycling targets real-time location, in order to achieve real-time monitoring of targets, to provide users with location-based services; positioning tracking results and then locate the incoming mobile services subsystem location dependent services;
Described trace is reviewed in the subsystem, and on the one hand the trace information bank provides the inquiry of historical locating information to the trace analysis, and the trace analysis is the process that incident takes place with the trace information reverting; On the other hand; The rule of conduct storehouse provides corresponding rule request to the behavior event handling; The behavior event handling utilizes the non real-time event handling to transmit the non real-time flow of event of coming simultaneously; According to essential informations such as different time, spaces; The trace analysis draws the user behavior state; The information via trace of this two aspect is analyzed, with the result import trace review in and be shown to the user through GIS;
Described mobile service subsystem is used for positioning result is sent to mobile device.
The invention has the beneficial effects as follows; Through adopting compartmentalization, the multiple dimensioned method of weighted sum; Traditional location model has been carried out modeling again; Utilize classical signals propagation model constructing virtual reference label space in locating area; Utilize reference label RSSI value and calculate the RSSI value of virtual reference label based on the mode of range finding; And adopt classical logarithm path loss model that environmental variance is estimated; Constructing virtual reference label matrix then; Obtain the RSSI value of virtual reference label and then the position that obtains to move object through weighted mean value; Simultaneously; Also overcome the problem of existing RFID positioning system bearing accuracy distortion outside the zone that reference label constitutes; And provide real-time positioning and target multiple service such as to review from provide single real-time positioning to be converted to for the user, under more sparse reference label density conditions, positioning a kind of feasible method that provides to the user.
Description of drawings
The one-piece construction model figure of Fig. 1 indoor locating system of the present invention;
The fixer network design of graphics of Fig. 2 indoor locating system of the present invention;
Fig. 3 is the communication protocol sequential chart of indoor locating system of the present invention;
Fig. 4 is the position application experiment basic configuration synoptic diagram of indoor locating system of the present invention;
Fig. 5 is the central area analysis of Positioning Error curve of indoor locating system embodiment of the present invention;
Fig. 6 is the outer peripheral areas analysis of Positioning Error curve of indoor locating system embodiment of the present invention.
Among the figure, 1. tracking server, 2. positioning unit, 3. location-server, 4. data acquisition client, 5. positioning honeycomb, 6. reader, 7. reference label.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
As shown in Figure 1; The functional mode of the indoor locating system based on RFID of the present invention is; Comprise that The equipment management subsystem, complicated event processing subsystem, real-time positioning subsystem, trace review subsystem, move service subsystem, the function of each sub-systems is respectively:
2.1) RFID equipment control in the The equipment management subsystem is used for management service that reader, reference label, mobile device are carried out basic increase, deletion, modification; And be responsible for safeguarding the facility information storehouse in the real-time positioning subsystem; Also the current device duty is monitored in real time, alarm prompt is provided faulty equipment;
2.2) complicated event processing subsystem major function comprises from reader and carry out data acquisition; Carry out the processing of data filter, incident reduction, event filtering, composition of matter, event matches and incident distribution again; Result is divided into that real-time event is handled and two types of non real-time event handlings; This complicated event processing subsystem with the full texture of total system service logic with link together; The complicated event processing subsystem has improved the data-handling efficiency of whole positioning system, has improved the reliability of system;
2.3) the real-time positioning subsystem is the core of total system; Each equipment working state information that input has equipment control to provide in the facility information storehouse wherein; Store a plurality of location algorithms in the positioning strategy storehouse; The real-time positioning subsystem is handled according to the real-time event in the complicated event processing subsystem and is transmitted the flow of event of coming; Elementary stream; According to different service requests; And in the positioning strategy storehouse, select suitable algorithm to carry out real-time event and handle (positioning calculation); And with result of calculation (like the locating events data; Case indexs etc.) information writes trace information bank and location tracking; Location tracking utilizes the trace analysis to the target real-time positioning again; To realize real-time monitoring, for the user provides positioning service to target; Location tracking imports positioning result into the position of moving in the service subsystem again and relies on service.
2.4) trace reviews in the subsystem, the trace information bank provides the inquiry of historical locating information to the trace analysis on the one hand, and the trace analysis is the process that incident takes place with the trace information reverting; On the other hand; The rule of conduct storehouse provides corresponding rule request to the behavior event handling; The behavior event handling utilizes the non real-time event handling to transmit the non real-time flow of event of coming simultaneously; According to essential informations such as different time, spaces; The trace analysis draws the user behavior state; The information via trace of this two aspect is analyzed, with the result import trace review in and be shown to the user through GIS.Also utilized data mining algorithm in the trace analytic process, the magnanimity space-time data has been analyzed, set up the movement law of moving target track based on sequence pattern.
2.5) move service subsystem and be used for positioning result is sent to mobile device.
In addition,, may need different services in the subsequent development, in the real-time positioning subsystem, reserve many development interfaces, to make things convenient for the exploitation of subsequent applications for these move to use to satisfy the demand of different field to different application.
Indoor locating system based on RFID of the present invention, the also connection that communicates through RFID devices communicating agreement.
In the system of the present invention, the reader of RFID is connected with the data acquisition client through the RS232 serial ports, and reads the order that reference label is read in data that reader uploads or transmission through the data acquisition client as signal procedure.During devices communicating, serial data reads baud rate and is set to 38400bps, and data bit is 8, and position of rest is 1, the no parity check position.The data of sending, receiving through serial ports be to the west of the RFID devices communicating agreement (RDCP, RFID Device Communication Protocol) of paddy company design be Content of Communication.Passing through the RS232 serial ports when reader sends order, as: when positioning command, reading tag data order, this order will meet the agreement of RFID devices communicating agreement; Likewise, when the response that the RFID reader is passed back, also will be according to the required data division of this protocol analysis.
RDCP is a kind of devices communicating agreement of variable length, is divided into functions such as reading and writing data, Equipment Inspection, location according to the function difference, and wherein the agreement of positioning function adopts following formalization definition:
RDCP＝CTRL-Segment?Dest-Addr?Src-Addr?Relay-Seg?Tag-Addr?Body?CRC-Segment
Wherein, CTRL-Segment representes control section, and length is 8 bytes, is beginning with the user code of 2 bytes, and ensuing byte indicates the function of this frame; Dest-Addr and Src-Addr length are 3 bytes; All represent the address information of reader; If it is the localization message response that is transferred to host computer from reader that Dest-Addr=000000 then represents this message; Dest-Addr is target reader address; If it is the positioning command from the data acquisition client transmissions to reader that Src-Addr=000000 then represents this message, Src-Addr is reader address, source; The positioning label address is wanted in the Tag-Addr representative; CRC-Segment length is 2 bytes, adopts the CRC-16 mode that the whole frame before the verification section is carried out verification, no matter is positioning command message, or response message, and this frame can be abandoned automatically if verification is failed; Body has partly indicated the details of order or data; If positioning command, this part can be specified the number of times of each power shelves transmission localization message, if response message; Then have the message of 11 bytes in the frame, the corresponding respectively 1-8 shelves of last 8 bytes are received the bag number of localization message.
Like Fig. 2; The fixer network structure of indoor locating system of the present invention is; Needs according to RFID equipment characteristic and positioning system; Comprise that tracking server 1 (is called for short TTS; Trace and Tracking Server); Tracking server 1 is connected with some groups of positioning units 2 (Positioning Unit), all positioning units 2 be distributed in to locate everywhere indoor, Fig. 2 embodiment three groups of positioning units 2 that only drawn.Wherein each positioning unit 2 comprises that one provides the location-server 3 of location-based service (to be called for short LSS; Location Service Server); This location-server 3 is gathered client 4 with data and is connected; This data acquisition client 4 is connected with several positioning honeycombs 5 (Positioning Cell), is provided with the reader 6 and several reference label 7 (Reference Tag) of a RFID in each positioning honeycomb 5.With positioning label be arranged on the moving target that will locate; Respectively be arranged on indoor everywhere by group reference label; It is overlapped that a plurality of positioning honeycomb 5 coverages have considerable part; The common foundation structure that constitutes positioning system; According to Lemma 1; In general, the necessary condition that should satisfy of reader 6 quantity in each positioning honeycomb is | Γ | >=Min (| R|).
When positioning object moves in certain positioning unit coverage; Reader 6 in a plurality of positioning honeycombs is with locating information such as the RSSI of positioning object and relevant reference label 7, PRR; Be sent on the data acquisition client 4 through wired (or wireless) network; Data acquisition client 4 is collected all locator datas in this positioning unit 2; And send on the location-server 3 and handle; Location-server 3 sends to tracking server 1 with the state of target, positional information, service log etc., for anchored object needed service is provided then.
The positional information of tracking server 1 all targets from each positioning unit collection total system, simultaneously, tracking server 1 can also be carried out the retrospective analysis to the record position of target, historical information on services, behavioural information etc.
Indoor locating system based on RFID of the present invention also carries out the management of equipment through the RFID device management protocol.
For the ease of management quantity, miscellaneous RFID equipment, to the essential information in the positioning system, the present invention is provided with RFID device management protocol (RFID Device Management Protocol is called for short RDMP).Similar other procotols are the same in RDMP; Specific definition grammer, semanteme and sequential; Wherein grammer partly uses BNF (Backus-Naur Form) to describe; The time preamble section adopt the UML sequential chart to describe, through RDMP the reciprocal process of data acquisition, server and the equipment room of positioning system is had clearly and is familiar with.
Divide from data structure, RDMP is divided into function numbering, message body and end mark and forms, like hereinafter BNF definition,
RDMP＝Function-ID?Message-Content?End-Segment；
Divide from function, RDMP comprises basic session, location, server authentication, four basic functions of equipment control, adopts the following formula definition:
RDMP＝TALK/Positioning/Data-Server-Authentification/Device-List；
To introduce respectively server authentication, equipment control, the three kinds of functions in location emphatically below, with reference to Fig. 3, be positioning system communication protocol sequential chart:
3.1) server authentication
The fundamental purpose of server authentication is that data task server role is carried out authentication; Wherein DataServerReq-ID representes the function coding of verify data task server; Authentification-Msg representes authentication content, comprises the authentication check sign indicating number of data task server
Data-Server-Authentification＝Function-ID?Message-Content?End-Segment＝DataServerReq-ID?Authentification-Msg?End-Segment
The verification process of data acquisition client is similar, repeats no more here;
3.2) equipment control
Reader and reference label that main all the data acquisition clients being responsible for the current data communication server is managed down of equipment control part connect are carried out basic state-detection; Comprise facility information request, list of devices response two parts; Send respectively from data task server and data acquisition client
Device-List＝Device-List-Request/Device-List-Response，
The list of devices request is sent by the data task server, and data communication server can be numbered DeviceListReq-ID according to function and directly transmitted, comprise in the request reader of appointment numbering, need the information such as reference label number of detection,
Device-List-Request＝DeviceListReq-ID?List-Req-Content?End-Segment，
After the data acquisition client receives the equipment control request, can judge that whether comprising notebook data among the RFID-Reader-List among the List-Resp-Content gathers the reader that client connects, if do not comprise, then directly abandons; If comprise the reader that the our station client connects, then the reference label information with request generates tabulation RFID-Tags-List, and the syntax format with Device-List-Response sends to the data acquisition client again,
Device-List-Response＝DeviceList-ID?List-Resp-Content?End-Segment，
List-Resp-Content＝RFID-Reader-List?Device-Segment?RFID-Tags-List；
3.3) location
Positioning function mainly is responsible for the transmission localization message, and likewise, positioning command comprises two kinds of forms of request and response, and Location Request has been specified to the reader transmission needs the positioning label list information, and concrete protocol format is stipulated as follows:
Positioning＝Positioning-Request/Positioning-Response，
Positioning-Request＝Function-ID?Message-Content，
End-Segment＝PositioningReq-ID?Msg-Sequence?RFID-Positioning-Req?End-Segment，
Positioning-Response＝Function-ID?Message-Content?End-Segment?＝Positioning-ID?Msg-Sequence?RFID-Positioning-RespEnd-Segment，
How to set up relation be one of key of realizing of positioning function to the location tasks of positioning result that the data acquisition client is passed back and data task server; If Location Request sends; Response message pass back and can't with location tasks information opening relationships before, a large amount of locator datas will produce the confusion of function, sequential at server end.The present invention is provided with a Hash table at the data task server end; Be used for depositing Location Request sequence numbering (Msg-Sequence) and location tasks information; The data task server is before sending Location Request; The sequence number that can will send is as index; The location tasks essential information is generated hashed value; Put into the sequence Hash table; And be put in the data task server end; In sending Location Request, comprise this sequence number Msg-Sequence; After location response was accomplished, this sequence number can be passed back, responds the key of corresponding location tasks as this; From Hash table, retrieve the essential information of corresponding task, send Location Request thereby accomplish; Receive the process of location response.
Embodiment
Like Fig. 4; This positioning system is deployed in the laboratory of a 17.7m * 5.85m; The reader (being numbered R1-R4) of 4 RFID is set in locating area; And in 12 reference label 7 of fixed position arrangement (being numbered RT1-RT12); So that raising system accuracy; Great amount of calculation machine, rack (being numbered T1-T16) etc. have been arranged in the laboratory; Also have obstacles such as body of wall, door, window near the equipment; These indoor affiliated facilities have increased the complexity of environment, and the environmental facies during with practical application seemingly.
In the positioning experiment of present embodiment; Adopt above-mentioned equipment disposition mode; With the reference label coverage with the interior central area that is designated as; Zone location zone boundary part is designated as outer peripheral areas; Select 16 assignment test points at random; Wherein select 8 assignment test points in the central area; 8 test points are in outer peripheral areas; Carry out 300 position findings at each anchor point respectively; Then the location MEE statistics of central area and outer peripheral areas is represented with bar chart; Like Fig. 5; Shown in Figure 6, the positioning error of central area is between 0.31m-1.65m, and bearing accuracy is very high; In outer peripheral areas, the MEE of location is between 1.48m-3.72m, and positioning error increases.If arrange some reference label again in outer peripheral areas, bearing accuracy still has the potentiality of further lifting.
The present invention is based on the indoor locating system of RFID technology; Employing is support based on the location algorithm of virtual label; Through at locating area deployed reference label and reader; And introducing virtual label technique construction is used for the low-cost positioning system of indoor environment; Effectively overcome the radiofrequency signal interference problem that a large amount of high density reference label of actual deployment are brought, deployment reference label layout is flexible, has expanded the locating area scope simultaneously; Improve indoor position accuracy, reduced cost of development.
Claims (5)
1. indoor locating system based on the RFID technology is characterized in that: comprise that The equipment management subsystem, complicated event processing subsystem, real-time positioning subsystem, trace review subsystem, move service subsystem, the function of each sub-systems is respectively:
RFID equipment control in the described The equipment management subsystem is used for management service that reader, reference label, mobile device are carried out basic increase, deletion, modification; And be responsible for safeguarding the facility information storehouse in the real-time positioning subsystem; Also the current device duty is monitored in real time, alarm prompt is provided faulty equipment;
Described complicated event processing subsystem function comprises from reader carries out data acquisition; Carry out the processing of data filter, incident reduction, event filtering, composition of matter, event matches and incident distribution again; Result is divided into that real-time event is handled and two types of non real-time event handlings; This complicated event processing subsystem with the full texture of total system service logic with link together; The complicated event processing subsystem has improved the data-handling efficiency of whole positioning system, has improved the reliability of system;
The real-time positioning subsystem is the core of the system, in which the device information library, enter a device management provides information on working status of each device, positioning strategy library stores a plurality of positioning algorithms, real-time positioning subsystem based on complex event processing subsystem to deliver real-time event processing flow of events, the basic data flow, according to different service requirements and positioning strategy library, select the appropriate algorithm for real-time event processing, and the calculation result information into deeds repository and positioning tracking, location tracking line trace analysis recycling targets real-time location, in order to achieve real-time monitoring of targets, to provide users with location-based services; positioning tracking results and then locate the incoming mobile services subsystem location dependent services;
Described trace is reviewed in the subsystem, and on the one hand the trace information bank provides the inquiry of historical locating information to the trace analysis, and the trace analysis is the process that incident takes place with the trace information reverting; On the other hand; The rule of conduct storehouse provides corresponding rule request to the behavior event handling; The behavior event handling utilizes the non real-time event handling to transmit the non real-time flow of event of coming simultaneously; According to essential informations such as different time, spaces; The trace analysis draws the user behavior state; The information via trace of this two aspect is analyzed, with the result import trace review in and be shown to the user through GIS;
Described mobile service subsystem is used for positioning result is sent to mobile device.
2. the indoor locating system based on the RFID technology according to claim 1 is characterized in that:
Described real-time positioning subsystem and trace are reviewed subsystem and are all depended on following network struction, and the structure of this network struction is,
Comprise tracking server (1); Tracking server (1) is connected with some groups of positioning units (2); Described each positioning unit (2) comprises location-server (3); Location-server (3) is connected with data acquisition client (4); Data acquisition client (4) is connected with several positioning honeycombs (5); Be provided with reader (6) and several reference label (7) of a RFID in each positioning honeycomb (5); With positioning label be arranged on the moving target that will locate; Respectively be arranged on indoorly everywhere by group reference label, a plurality of positioning honeycombs (5) coverage has the overlapped zone of part.
3. the indoor locating system based on the RFID technology according to claim 1 and 2 is characterized in that: the necessary condition that the quantity of reader (6) should satisfy in described each positioning honeycomb is | Γ | >=Min (| R|).
4. the indoor locating system based on the RFID technology according to claim 1 and 2 is characterized in that: through the connection that RFID devices communicating agreement communicates, concrete function realize be,
The reader of RFID is connected with the data acquisition client through the RS232 serial ports, and reads the order that reference label is read in data that reader uploads or transmission through the data acquisition client as signal procedure,
During devices communicating, serial data reads baud rate and is set to 38400bps, and data bit is 8, and position of rest is 1, the no parity check position,
The data of sending, receiving through serial ports are that RFID devices communicating agreement is a Content of Communication, are passing through the RS232 serial ports when reader sends order, as: when positioning command, reading tag data order, this order will meet the agreement of RFID devices communicating agreement; Likewise, when the response that the RFID reader is passed back, also will be according to the required data division of this protocol analysis,
RDCP is a kind of devices communicating agreement of variable length, comprises reading and writing data, Equipment Inspection, positioning function according to the function difference, and wherein the agreement of positioning function adopts following formalization definition:
RDCP＝CTRL-Segment?Dest-Addr?Src-Addr?Relay-Seg?Tag-Addr?Body?CRC-Segment
Wherein, CTRL-Segment representes control section, and length is 8 bytes, is beginning with the user code of 2 bytes, and ensuing byte indicates the function of this frame; Dest-Addr and Src-Addr length are 3 bytes; All represent the address information of reader; If it is the localization message response that is transferred to host computer from reader that Dest-Addr=000000 then represents this message; Dest-Addr is target reader address; If it is the positioning command from the data acquisition client transmissions to reader that Src-Addr=000000 then represents this message, Src-Addr is reader address, source; The positioning label address is wanted in the Tag-Addr representative; CRC-Segment length is 2 bytes, adopts the CRC-16 mode that the whole frame before the verification section is carried out verification, no matter is positioning command message, or response message, and this frame can be abandoned automatically if verification is failed; Body has partly indicated the details of order or data; If positioning command, this part can be specified the number of times of each power shelves transmission localization message, if response message; Then have the message of 11 bytes in the frame, the corresponding respectively 1-8 shelves of last 8 bytes are received the bag number of localization message.
5. the indoor locating system based on the RFID technology according to claim 1 and 2 is characterized in that: also carry out the management of equipment through the RFID device management protocol, concrete function realize be,
The RFID device management protocol is called for short RDMP; Similar other procotols are the same in RDMP; Specific definition grammer, semanteme and sequential; Wherein grammer partly uses BNF to describe; The time preamble section adopt the UML sequential chart to describe; Through RDMP the reciprocal process of data acquisition, server and the equipment room of positioning system there is understanding clearly
Divide from data structure, RDMP is divided into function numbering, message body and end mark and forms, like hereinafter BNF definition,
RDMP＝Function-ID?Message-Content?End-Segment；
Divide from function, RDMP comprises basic session, location, server authentication, four basic functions of equipment control, adopts the following formula definition:
RDMP＝TALK/Positioning/Data-Server-Authentification/Device-List；
Server authentication, equipment control, the three kinds of functions in location are introduced respectively as follows:
1) server authentication
Server authentication be that data task server role is carried out authentication; Wherein DataServerReq-ID representes the function coding of verify data task server; Authentification-Msg representes authentication content, comprises the authentication check sign indicating number of data task server
Data-Server-Authentification＝Function-ID?Message-Content?End-Segment＝DataServerReq-ID?Authentification-Msg?End-Segment
The verification process of data acquisition client is similar;
2) equipment control
Reader and reference label that all data acquisition clients that equipment control is responsible for that partly the current data communication server is managed down connect are carried out basic state-detection; Comprise facility information request, list of devices response two parts; Send respectively from data task server and data acquisition client
Device-List＝Device-List-Request/Device-List-Response，
The list of devices request is sent by the data task server, and data communication server can be numbered DeviceListReq-ID according to function and directly transmitted, and comprises the numbering of the reader of appointment, the reference label information that need detect in the request,
Device-List-Request＝DeviceListReq-ID?List-Req-Content?End-Segment，
After the data acquisition client receives the equipment control request, can judge that whether comprising notebook data among the RFID-Reader-List among the List-Resp-Content gathers the reader that client connects, if do not comprise, then directly abandons; If comprise the reader that the our station client connects, then the reference label information with request generates tabulation RFID-Tags-List, and the syntax format with Device-List-Response sends to the data acquisition client again,
Device-List-Response＝DeviceList-ID?List-Resp-Content?End-Segment，
List-Resp-Content＝RFID-Reader-List?Device-Segment?RFID-Tags-List；
3) location
Positioning function is responsible for sending localization message, and likewise, positioning command comprises two kinds of forms of request and response, and Location Request has been specified to the reader transmission needs the positioning label list information, and concrete protocol format is stipulated as follows:
Positioning＝Positioning-Request/Positioning-Response，
Positioning-Request＝Function-ID?Message-Content，
End-Segment＝PositioningReq-ID?Msg-Sequence?RFID-Positioning-Req?End-Segment，
Positioning-Response＝Function-ID?Message-Content?End-Segment＝Positioning-ID?Msg-Sequence?RFID-Positioning-RespEnd-Segment，
Be provided with a Hash table at the data task server end; Be used for depositing Location Request sequence numbering (Msg-Sequence) and location tasks information; The data task server is before sending Location Request; The sequence number that can will send is as index; The location tasks essential information is generated hashed value; Put into the sequence Hash table; And be put in the data task server end; In sending Location Request, comprise this sequence number Msg-Sequence; After location response was accomplished, this sequence number can be passed back, responds the key of corresponding location tasks as this; From Hash table, retrieve the essential information of corresponding task, send Location Request thereby accomplish; Receive the process of location response.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110147718A CN102306264A (en) | 2011-06-02 | 2011-06-02 | Radio frequency identification (RFID)-technology-based indoor positioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110147718A CN102306264A (en) | 2011-06-02 | 2011-06-02 | Radio frequency identification (RFID)-technology-based indoor positioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102306264A true CN102306264A (en) | 2012-01-04 |
Family
ID=45380124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110147718A Pending CN102306264A (en) | 2011-06-02 | 2011-06-02 | Radio frequency identification (RFID)-technology-based indoor positioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102306264A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692618A (en) * | 2012-05-23 | 2012-09-26 | 浙江工业大学 | RFID (radio frequency identification) positioning method based on RSSI (received signal strength indicator) weight fusion |
| CN102724287A (en) * | 2012-05-18 | 2012-10-10 | 南京大学 | Mobile space four dimensional information service system and terminals thereof and location method |
| CN102879776A (en) * | 2012-09-19 | 2013-01-16 | 中国科学院微电子研究所 | Radio frequency identification ranging or positioning system and method thereof |
| CN102938083A (en) * | 2012-10-19 | 2013-02-20 | 江苏香江科技股份有限公司 | Data machine room behavior tracking method and system based on RFID (Radio Frequency Identification) |
| CN104834313A (en) * | 2015-05-15 | 2015-08-12 | 济南大学 | RFID-based greenhouse intelligent medicine spraying robot and method |
| WO2015168765A1 (en) * | 2014-05-05 | 2015-11-12 | União Brasileira De Educação E Assistência, Mantenedora Da Pontifícia Universidade Católica Do Rio Grande Do Sul (Pucrs) | System and method for locating spatial co-ordinates of objects and use of said system for locating objects located in indoor spaces |
| CN105657821A (en) * | 2014-11-19 | 2016-06-08 | 北京航天长峰科技工业集团有限公司 | Indoor UWB signal positioning optimization method |
| CN106682546A (en) * | 2016-12-21 | 2017-05-17 | 武汉市龙腾创科技有限公司 | Search and rescue system based on RFID tag and method thereof |
| US10849205B2 (en) | 2015-10-14 | 2020-11-24 | Current Lighting Solutions, Llc | Luminaire having a beacon and a directional antenna |
| CN116058830A (en) * | 2022-12-26 | 2023-05-05 | 上海电气智能康复医疗科技有限公司 | Walking capacity measuring system |
| CN116095152A (en) * | 2023-03-08 | 2023-05-09 | 杭州半云科技有限公司 | Multi-terminal-based multi-screen communication collaboration method |
| US12079892B2 (en) | 2022-01-27 | 2024-09-03 | FreeLiveNet Technology Corp. | Methods and systems for facilitating locating an individual based on UHF RFID tags |
-
2011
- 2011-06-02 CN CN201110147718A patent/CN102306264A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102724287A (en) * | 2012-05-18 | 2012-10-10 | 南京大学 | Mobile space four dimensional information service system and terminals thereof and location method |
| CN102692618B (en) * | 2012-05-23 | 2014-01-29 | 浙江工业大学 | RFID (radio frequency identification) positioning method based on RSSI (received signal strength indicator) weight fusion |
| CN102692618A (en) * | 2012-05-23 | 2012-09-26 | 浙江工业大学 | RFID (radio frequency identification) positioning method based on RSSI (received signal strength indicator) weight fusion |
| CN102879776A (en) * | 2012-09-19 | 2013-01-16 | 中国科学院微电子研究所 | Radio frequency identification ranging or positioning system and method thereof |
| CN102879776B (en) * | 2012-09-19 | 2014-04-02 | 中国科学院微电子研究所 | Radio frequency identification ranging or positioning system and method thereof |
| CN102938083A (en) * | 2012-10-19 | 2013-02-20 | 江苏香江科技股份有限公司 | Data machine room behavior tracking method and system based on RFID (Radio Frequency Identification) |
| WO2015168765A1 (en) * | 2014-05-05 | 2015-11-12 | União Brasileira De Educação E Assistência, Mantenedora Da Pontifícia Universidade Católica Do Rio Grande Do Sul (Pucrs) | System and method for locating spatial co-ordinates of objects and use of said system for locating objects located in indoor spaces |
| CN105657821A (en) * | 2014-11-19 | 2016-06-08 | 北京航天长峰科技工业集团有限公司 | Indoor UWB signal positioning optimization method |
| CN104834313A (en) * | 2015-05-15 | 2015-08-12 | 济南大学 | RFID-based greenhouse intelligent medicine spraying robot and method |
| US10849205B2 (en) | 2015-10-14 | 2020-11-24 | Current Lighting Solutions, Llc | Luminaire having a beacon and a directional antenna |
| CN106682546A (en) * | 2016-12-21 | 2017-05-17 | 武汉市龙腾创科技有限公司 | Search and rescue system based on RFID tag and method thereof |
| US12079892B2 (en) | 2022-01-27 | 2024-09-03 | FreeLiveNet Technology Corp. | Methods and systems for facilitating locating an individual based on UHF RFID tags |
| CN116058830A (en) * | 2022-12-26 | 2023-05-05 | 上海电气智能康复医疗科技有限公司 | Walking capacity measuring system |
| CN116095152A (en) * | 2023-03-08 | 2023-05-09 | 杭州半云科技有限公司 | Multi-terminal-based multi-screen communication collaboration method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102306264A (en) | Radio frequency identification (RFID)-technology-based indoor positioning system | |
| CN101940055B (en) | Location tracking based on proximity-based ad hoc network | |
| CN102946616B (en) | Internet of things middleware performance testing system and testing method | |
| CN102395200B (en) | Node positioning method in wireless sensor network and apparatus thereof | |
| RU2331096C1 (en) | Method to simulate control over hardware and simulation system | |
| CN102752237B (en) | A kind of general-purpose gateway devices and Internet of things system | |
| CN103546960B (en) | Localization method and system | |
| US11513245B2 (en) | Artificial intelligence calculation method and apparatus for monitoring earthquake in real time based on edge cloud cooperation, and storage medium | |
| CN103197625A (en) | Remote temperature and humidity monitoring system based on cloud storage | |
| CN105527604A (en) | Indoor positioning method and device using same | |
| CN103068038A (en) | Indoor bidirectional positioning method based on Zigbee network | |
| CN104219067A (en) | Method, user terminal and system for achieving quick configuration for terminal of Internet of Things | |
| CN103826301A (en) | Node positioning method and device | |
| CN102711245B (en) | Two-stage matching and positioning method in WLAN (Wireless Local Area Network) area in indoor environment | |
| CN105554702A (en) | Cross network positioning system and method, positioning server and mobile terminal | |
| RU2487386C2 (en) | Method of simulating processes for centralised control of equipment and system for realising said method (versions) | |
| CN116866834A (en) | Positioning method, positioning device and storage medium | |
| CN113743547B (en) | Asset supervision method and platform based on RFID tag and storage medium | |
| CN104734918A (en) | Lightweight webpage performance testing architecture and method | |
| CN105681088B (en) | Reliability and performance comprehensive evaluation method for Internet of things | |
| CN102752850B (en) | Range-free based device and method for screening network anchor nodes | |
| CN105657825A (en) | Positioning method, mobile terminal, cloud server and positioning system | |
| Haghani et al. | Automated low-cost and real-time truck parking information system. | |
| CN112182132A (en) | Subway user identification method, system, equipment and storage medium | |
| CN112910699A (en) | Intelligent fault detection method and device for power internet of things |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120104 |