CN103714504A - RFID-based city complex event tracking method - Google Patents

Abstract

An RFID-based city complex event tracking method introduces an interface method and tracking and positioning technology to realize tracking and positioning of complex events affecting the safety of the city. The method is characterized by, to begin with, performing analysis and design on a basic RFID system; next, establishing an RFID positioning and tracking management service platform; then, layering the structure of the RFID positioning and tracking management platform and designing specific functions which are realized by each layer; and at last, designing and applying the interface technology to realize the city complex event tracking and positioning. The RFID-based city complex event tracking method provided in the invention is capable of effectively realizing tracking and positioning of the complex events and is good in practicality.

Description

A kind of city complicated event method for tracing based on RFID

Technical field

The present invention relates to track and localization technical field, especially a kind of city complicated event method for tracing, is specially adapted to the problem of the tracing management aspect of city complicated event.

Background technology

How on affecting the complicated event of urban safety, to position with following the tracks of be that the matter of utmost importance that digital management need to solve is carried out in city, consider that RFID location technology is more ripe than location technologies such as Wi-Fi, GPS, and the department of correlative study abroad is successfully applied to this technology among the personnel management system of hospital and school, has fully proved feasibility and the application advantage of RFID positioning system.But at present the system of exploitation all exists very flexible, portability is low, positional information utilization factor is low and the problem such as function singleness.In order to improve the utilization factor of RFID data, according to information such as the attribute of rfid interrogator and deployed position, infer the complicated event with senior semanteme, must introduce and realize context-sensitive RFID location tracing management platform.The implementation model of at present typical context service comprises Context Toolkit, Context Shadow, Context Fabric etc., yet various context models respectively have its relative merits, be difficult to meet the requirement of obtaining and utilizing to city complicated event data.

Summary of the invention

For overcome in the complicated event management of existing city cannot location tracking, the poor deficiency of practicality, the invention provides a kind of good city complicated event method for tracing based on RFID of location tracking, practicality of effectively realizing complicated event.

The technical solution adopted for the present invention to solve the technical problems is:

A city complicated event method for tracing based on RFID, described method for tracing comprises the following steps:

1) set up basic rfid system: rfid system comprises RFID label, rfid interrogator and and RFID application module, read write line is outwards launched radio carrier signal through emitting antenna, region generates an electromagnetic field, when electronic tag enters the perform region of emitting antenna, receive the radiofrequency signal that reader sends, the energy activated label that relies on induction current to obtain, the product information being stored in chip is sent, the receiving antenna of system receives the carrier signal that electronic tag sends, regulator through antenna is transferred to read write line, read write line carries out demodulating and decoding to the received signal, then be sent to the computer controller on backstage,

Computer controller judges the legitimacy of this label according to logical operation, for different settings, make corresponding processing and control, sends the action that command signal is controlled topworks, and topworks is just according to the instruction action of computer; By computer network, each control point is coupled together, form overhead control information platform;

2) build RFID location tracing management service platform: introduce RFID event rules engine and Context query inference mechanism for RFID event feature, wherein RFID event feature and context application characteristic fully find expression in RFID event description language, RFID technology and context-aware technology are merged, not only encapsulate the detailed process of RFID obtaining information, also encapsulated the detailed process of contextual information inquiry reasoning;

3) design RFID functional module: Device Domain layer comprises all modules that multidate information can be provided, and the obtain manner of multidate information is that the RFID obtaining by rfid interrogator reports, and RFID report is obtained by SJTU RFID middleware; Rule Base is a service processes, and it manages, monitors and trigger the RFID event rules of all application registrations; When RFID event rules is monitored and processed, according to the needs of different event rules, by contextual access interface, dynamically contextual information is inquired about and reasoning; Application Domain layer comprises the various services relevant to positional information, need to subscribe to corresponding event rules to the rule base in Rule Base, and obtain the infrastructure service that Rule Base provides; User Domain comprises the personnel that use the application in Application Domain, is supvr or the user of application;

4) design interface: three interfaces are ALE Event Interface, Knowledge Interface and RFID Event Subscribe Interface, the RFID Report data of reality when wherein ALE Event Interface provides to Rule Base; RFID middleware has encapsulated the details to the configuration of RFID equipment and management, has encapsulated the details of obtaining original RFID data from RFID equipment simultaneously; Knowledge Interface provides the management to the Context Knowledge in Rule Base; Context Knowledge is that the deviser by service platform provides in advance; RFID Event Subscribe Interface is identical with the context events subscribing mechanism in context Fabric; Application is submitted a subscribe request and a readjustment handle by this interface to Rule Base; Subscribe request has been described own interested specific RFID event; Whenever Rule Base service monitoring occurs RFID event or a series of RFID event in environment, the application of the handle providing by application readjustment is Event triggered;

Realizing city complicated event follows the trail of and location.

Technical conceive of the present invention is: typical RFID (Radio Frequency Identification) technology is that application wireless radiofrequency electric wave is from the general name of the technology of the single object of moving identification.Use the method for RFID identifying object to have multiple, but the most generally store a stringly for identifying the number (also may comprise out of Memory) of this object a microchip (being attached on antenna) is inner, chip and antenna combine and are called RFID transponder or RFID label.Antenna makes chip identifying information can be sent to rfid interrogator.Read write line changes the radiowave returning from RFID label into the form that can be sent to computing machine and be used.Have and solve the function that city complicated event is followed the tracks of and located.

Based on this, the present invention is tracked as research object with city complicated event, introduces interface method, track and localization technology, takes into full account urban safety affair character, proposes a kind of city complicated event tracer technique based on RFID.By the method, helping government department to realize follows the tracks of and location affecting the complicated event of urban safety.

Introduce interface method, the realization of track and localization technology to affecting the complicated event tracking and location of urban safety, first basic RIFD system is analyzed and designed; Next builds RFID location tracing management service platform; Again RFID location tracing management platform structure is carried out to layering, design has realized the concrete function that each level is realized, and finally design and application interface technology realizes city complicated event and follow the trail of and location.

Beneficial effect of the present invention is: the present invention has effectively overcome complicated event and followed the trail of and the difficulty of locating, and government department can be followed the trail of and location affecting the complicated event of urban safety, has good using value.

Accompanying drawing explanation

Fig. 1 is rfid system fundamental diagram.

Fig. 2 is the schematic diagram of RFID location tracing management service platform structure.

Embodiment

Below in conjunction with accompanying drawing, the invention will be further described.

See figures.1.and.2, a kind of city complicated event method for tracing based on RFID, described method for tracing comprises the following steps:

1) set up basic rfid system: basic rfid system is comprised of 3 parts conventionally: RFID label, rfid interrogator, and RFID application software.Inductor or claim RFID label wherein, according to the difference of tag-powered mode, electronic tag can be divided into active electronic label (Active tag) and passive electronic label (Passive tag).Passive label (Passive Tag) itself can independently not send data electric wave, by read write line (Reader), send electric wave and produce signal, the antenna reception of RFID label, to the generation induction current in magnetic field, is then sent the information being stored in wafer (Chip) and is received interpretation to read write line (Reader).The groundwork flow process of RFID technology is that read write line is outwards launched radio carrier signal through emitting antenna, region generates an electromagnetic field, when electronic tag enters the perform region of emitting antenna, receive the radiofrequency signal that reader sends, the energy activated label that relies on induction current to obtain, the product information being stored in chip is sent, passive label or passive label, or initiatively send the signal of a certain frequency, active label or active tag, the receiving antenna of system receives the carrier signal that electronic tag sends, regulator through antenna is transferred to read write line, read write line carries out demodulating and decoding to the received signal, then be sent to the computer controller on backstage.Computer controller judges the legitimacy of this label according to logical operation, for different settings, make corresponding processing and control, sends the action that command signal is controlled topworks, and topworks is just according to the instruction action of computer.By computer network, each control point is coupled together, form overhead control information platform, software that can be different according to different Project design completes the function that will realize.Principle of work as shown in Figure 1.；

2) build RFID location tracing management service platform: although RFID location technology is tending towards maturation, lack thering is the research of the RFID location tracing management platform of versatility.By platform, we can, according to the demand of different application, carry out application deployment easily and fast.Here introduce RFID event rules engine and Context query inference mechanism for RFID event feature.Wherein RFID event feature and context application characteristic fully find expression in RFID event description language, and its concrete platform framework as shown in Figure 2.This structure merges RFID technology and context-aware technology, has not only encapsulated the detailed process of RFID obtaining information, has also encapsulated the detailed process of contextual information inquiry reasoning, has also solved the issues for translation of RFID event rules simultaneously;

3) design RFID functional module: Device Domain layer mainly comprises all modules that multidate information can be provided, in this system, the main obtain manner of multidate information is that the RFID obtaining by rfid interrogator reports, and RFID report is obtained by SJTU RFID middleware; Rule Base is a service processes, and it manages, monitors and trigger the RFID event rules of all application registrations.When RFID event rules is monitored and processed, according to the needs of different event rules, by contextual access interface, dynamically contextual information is inquired about and reasoning; Application Domain layer mainly comprises the various services relevant to positional information, and they need to subscribe to corresponding event rules to the rule base in Rule Base conventionally, and obtain the infrastructure service that Rule Base provides; User Domain mainly comprises the personnel that use the application in Application Domain, is supvr or the user of application;

4) design interface: relate generally to three interfaces in Fig. 2, i.e. ALE Event Interface, Knowledge Interface and RFID Event Subscribe Interface.The RFID Report data of reality when wherein ALE Event Interface provides to Rule Base.RFID middleware has encapsulated the details to the configuration of RFID equipment and management, has encapsulated the details of obtaining original RFID data from RFID equipment simultaneously; Knowledge Interface provides the management to the Context Knowledge in Rule Base, as increased knowledge, delete knowledge and refresh one's knowledge etc.Context Knowledge can be that the deviser by service platform provides in advance, and these knowledge are Context Knowledges that great majority application all can need, such as entity information, read write line information and read write line are related to decision rule etc.; Other can be that the developer by concrete application provides and submitted to dynamically in the time of running by application program, these knowledge correspondences each apply the demand of special contextual information, be generally the context of the ratio higher level directly related with application function; Context events subscribing mechanism in RFID Event Subscribe Interface and context Fabric is similar.Application can be submitted a subscribe request and a readjustment handle to Rule Base by this interface.Subscribe request has been described own interested specific RFID event (RFID event that can be described as satisfying condition or a sequence RFID event).Whenever Rule Base service monitoring occurs such RFID event or a series of RFID event in environment, the application of the handle providing by application readjustment, we call Event triggered this process.The main services providing due to RFID location tracing management platform is that regulation engine passes through regular management and triggering by application person's registered events rule, for application provides service.This interface unique channel that to be concrete application intercom mutually with RuleBase.

Claims (1)

1. the city complicated event method for tracing based on RFID, is characterized in that: described method for tracing comprises the following steps:

1) set up basic rfid system: rfid system comprises RFID label, rfid interrogator and and RFID application module, read write line is outwards launched radio carrier signal through emitting antenna, region generates an electromagnetic field, when electronic tag enters the perform region of emitting antenna, receive the radiofrequency signal that reader sends, the energy activated label that relies on induction current to obtain, the product information being stored in chip is sent, the receiving antenna of system receives the carrier signal that electronic tag sends, regulator through antenna is transferred to read write line, read write line carries out demodulating and decoding to the received signal, then be sent to the computer controller on backstage,

Computer controller judges the legitimacy of this label according to logical operation, for different settings, make corresponding processing and control, sends the action that command signal is controlled topworks, and topworks is just according to the instruction action of computer; By computer network, each control point is coupled together, form overhead control information platform;

2) build RFID location tracing management service platform: introduce RFID event rules engine and Context query inference mechanism for RFID event feature, wherein RFID event feature and context application characteristic fully find expression in RFID event description language, RFID technology and context-aware technology are merged, not only encapsulate the detailed process of RFID obtaining information, also encapsulated the detailed process of contextual information inquiry reasoning;

3) design RFID functional module: Device Domain layer comprises all modules that multidate information can be provided, and the obtain manner of multidate information is that the RFID obtaining by rfid interrogator reports, and RFID report is obtained by SJTU RFID middleware; Rule Base is a service processes, and it manages, monitors and trigger the RFID event rules of all application registrations; When RFID event rules is monitored and processed, according to the needs of different event rules, by contextual access interface, dynamically contextual information is inquired about and reasoning; Application Domain layer comprises the various services relevant to positional information, need to subscribe to corresponding event rules to the rule base in Rule Base, and obtain the infrastructure service that Rule Base provides; User Domain comprises the personnel that use the application in Application Domain, is supvr or the user of application;

4) design interface: three interfaces are ALE Event Interface, Knowledge Interface and RFID Event Subscribe Interface, the RFID Report data of reality when wherein ALE Event Interface provides to Rule Base; RFID middleware has encapsulated the details to the configuration of RFID equipment and management, has encapsulated the details of obtaining original RFID data from RFID equipment simultaneously; Knowledge Interface provides the management to the Context Knowledge in Rule Base; Context Knowledge is that the deviser by service platform provides in advance; RFID Event Subscribe Interface is identical with the context events subscribing mechanism in context Fabric; Application is submitted a subscribe request and a readjustment handle by this interface to Rule Base; Subscribe request has been described own interested specific RFID event; Whenever Rule Base service monitoring occurs RFID event or a series of RFID event in environment, the application of the handle providing by application readjustment is Event triggered;

Realizing city complicated event follows the trail of and location.

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