CN103456068A - Roll calling counting system - Google Patents
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- CN103456068A CN103456068A CN201310390824XA CN201310390824A CN103456068A CN 103456068 A CN103456068 A CN 103456068A CN 201310390824X A CN201310390824X A CN 201310390824XA CN 201310390824 A CN201310390824 A CN 201310390824A CN 103456068 A CN103456068 A CN 103456068A
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Abstract
The invention provides a roll calling counting system. The roll calling counting system comprises movable RFID (Radio Frequency Identification) electronic tags, a plurality of boundary card readers, at least one central card reading unit and a background server, wherein each movable RFID electronic tag has a wireless communication function and carries ID (Identity) information; the boundary card readers are arranged at the periphery of a specific field at intervals and are used for reading the ID information in each movable RFID electronic tag entering and exiting the specific place; each central card reading unit is located in the central region of the specific field, is in communication connection with each boundary card reader and is used for reading data of each boundary card reader in a communication range; the background server is in the communication connection with each boundary card reader and each central card reading unit and is used for checking roll calling information of each boundary card reader and/or each central card reading unit and dispatching each boundary card reader and/or each central card reading unit to carry out roll calling operation. Compared with the prior art, the roll calling counting system is simple in structure, convenient to mount and low in cost, can be applicable to various fields, is flexible to use and is rapid and accurate in roll calling operation.
Description
Technical field
The present invention relates to the roll-call technology, particularly relate to a kind of roll-call statistical system based on the RFID technology.
Background technology
In a lot of industries, people information can provide crucial foundation for people's flow management, resource management, management decision.For example, at subway station, can understand in real time stream of people's size of each website by people counting, flexible dispatching subway train density, implement people's current control, the crowded regional information of real-time release, be conducive to strengthen crowd's conevying efficiency, guarantees that metro operation is steadily effective.In market, flow of the people is the important evidence that embodies its commercial value, and the accurate calculating to flow of the people, be conducive to grasp guest's shopping preferences, thereby realize better logistics arrangement, can also, according to the crowd is dense in each zone degree, effectively allocate the attendant.On square, the marketplaces such as stadium, park, flow of the people also is related to the safety problem in crowded place, effective crowd's quantity in controlling filed can in emergency circumstances be dredged rapidly the crowd in fire alarm etc., the situation such as avoids trampling, push and occurs.In addition, the qualification certain for needs just can enter the situation of corresponding places, just inevitably needs the statistics of calling the roll.
Original roll-call statistical can be the hand-held corresponding papery voucher of admission person or admission ticket (can be also predetermined information), transfer to ticket collector or the person of checking checking in entrance, record this admission person on list, leak source or wrong point not only easily appear in this kind of mode, also can in the roll-call process, expend too much time and efforts.Further, other roll-call statistical technique also can rely on mechanical means to realize.A kind of roll-call statistical technique commonly used is to utilize mechanical motion to carry out stream of people's statistics, for example: promote mechanical rotation when the pedestrian passes by gate by the electronic signature of hand-held papery voucher, admission ticket or tool RFID function, so, the number of times by the statistics mechanical rotation can complete roll-call and statistics people information.This mode construction cost is high, and the equipment investment expense is huge, and equipment volume is larger, generally to be fixed on the place, gateway, use underaction, also convenient not for the management of people information, also having the shortcoming of a maximum is exactly the gait of march that has hindered the stream of people.Another kind of roll-call statistical commonly used is to use photoelectric sensor, by the pedestrian, triggers photoelectric sensor, thereby realizes roll-call and counting to the pedestrian.This roll-call statistical is to need the roll-call statistics of carrying out on the basis of ticket checking at subway, although accuracy rate is high, fringe cost is low, and this roll-call statistical is only suitable for for needing the place of ticket checking, and generally being deployed in indoor environment, the scope of application has certain limitation.
Summary of the invention
The object of the present invention is to provide a kind of roll-call statistical system, the problems such as prior art roll-call statistics is loaded down with trivial details for solving, impact counting accuracy rate.
For addressing the above problem and other problems, the invention provides a kind of roll-call statistical system, comprising: as the mobile RFID electronic tag of mobile node, there is radio communication function and with id information; Boundary's card reader pattern is enclosed in employing, comprise a plurality of boundary's card reader of enclosing, a plurality of described enclose periphery that card reader compartment of terrain, boundary is laid in particular place each read a little, for the id information of each described mobile RFID electronic tag in the roll-call zone of reading the described particular place of turnover in communication range; Adopt central card reading unit pattern, comprise at least one central card reading unit, described central card reading unit is located at the central area of described particular place and the roll-call zone that its communication range covers described particular place, for read the id information of mobile RFID electronic tag in the described zone of calling the roll in communication range; Background server, establish a communications link with described a plurality of described described central card reading unit of enclosing in boundary's card reader or described central card reading unit pattern of enclosing in boundary's card reader pattern, for checking each, describedly enclose the roll-call information of boundary's card reader and/or described central card reading unit and dispatch each and describedly enclose the operation of calling the roll of boundary's card reader and/or described central card reading unit.
Alternatively, described, enclose boundary's card reader pattern, adjacent two described communication radius that enclose boundary's card reader are identical with their spacing distance; The described boundary's card reader of enclosing comprises invasion-detecting sensor.
Alternatively, described mobile RFID electronic tag is provided with a plurality of communication channels, comprising: channel is intercepted in broadcast, for receiving from described broadcast message of enclosing boundary's card reader or described background server; The RFID transmitting channel, for sending the id information of self; Receive ID and intercept channel, for intercepting broadcast message to determine whether the id information of self; Omit feedback channel, for intercepting at described reception ID after channel determines that the broadcast message of intercepting does not have the id information of self, resend the id information of self; The described boundary's card reader of enclosing is provided with a plurality of communication channels, comprising: the broadcast signaling transmitting channel, for sending the current broadcast signaling to activate described mobile RFID electronic tag; RFID intercepts channel, the id information sent by described RFID transmitting channel for receiving described mobile RFID electronic tag; Receive ID issue channel, for issue, by described RFID, intercept the id information that channel receives; Omit feedback and intercept channel, the id information sent by described omission feedback channel for receiving described mobile RFID electronic tag.
Alternatively, described background server obtains id information and comprises the time-frequency diversity point of impingement name mode of falling power points name mode and Background control.
Alternatively, the described power points name mode of falling comprises, the described boundary's card reader of enclosing is detecting the mobile RFID electronic tag while entering in described particular place, extremely described mobile RFID electronic tag is to make be proofreaded and cut the low power transmissions state its time according to broadcast channel to send activation instruction by broadcast channel, and described mobile RFID electronic tag reports to the id information included the described boundary's card reader of enclosing established a communications link, after described mobile RFID electronic tag sends id information, incision receives ID and intercepts channel, describedly enclose the id information that boundary's card reader will receive in broadcast distribution, if described mobile RFID electronic tag listens to the id information of oneself, proceed to broadcast and intercept channel, enter the state of intercepting, if described mobile RFID electronic tag does not listen to the id information of oneself, proceed to the omission feedback channel, again report self ID, feed back and intercept channel and receive the id information that described mobile RFID electronic tag sends by described omission feedback channel by omission for the described boundary's card reader of enclosing, the described boundary's card reader of enclosing is not received the omission feedback information from described mobile RFID electronic tag after the issue id information, stops issuing described id information, and described id information is reported to described background server, described background server collects each and describedly encloses the id information that boundary's card reader reports.
Alternatively, described roll-call statistical system also comprises: described background server describedly encloses each id information that boundary's card reader reports according to each, gets rid of the id information of repeated and redundant.
Alternatively, the time-frequency diversity point of impingement name mode of described Background control comprises: background server is according to the id information be pooled to and total id information comparison, divide the ID zone and carry out the roll-call of time-frequency diversity, be controlled at the quantity of the mobile RFID electronic tag in each time-frequency domain, the mobile RFID electronic tag in same time-frequency domain reports id information by csma CSMA collision mode.
Alternatively, the time-frequency diversity point of impingement name mode of described Background control: described background server is controlled described central card reading unit and is announced the roll-call frame, in described roll-call frame, the frame frame head that includes but not limited to call the roll, initial ID section, end the ID section, report the time period and report frequency range; Described central card reading unit, under the control of background server, is taked unorderedly to report or report in order; In described unordered reporting, the id information be missed all adopts the CSMA mode to report simultaneously; Report in order described, for the id information of omitting, according to id information, divide the different time and frequency range reported.
Alternatively, described central card reading unit and describedly enclose that boundary's card reader works alone respectively or both cooperatings includes but not limited to: describedly enclose the id information do not occurred that boundary's card reader snoops in broadcast frame, report to described background server; Described enclosing after boundary's card reader reads in advance to id information, described background server is no longer called the roll to already present ID.
Alternatively, the quantity of described central card reading unit is according to the size of the communication range of described central card reading unit and described particular place and fixed.
As mentioned above, a kind of roll-call statistical system of the present invention, comprise with id information mobile RFID electronic tag, compartment of terrain is laid in a plurality of boundary's card reader of enclosing of the periphery of particular place, be positioned at least one central card reading unit of the central area of described particular place, and background server, in application, each disposes a mobile RFID electronic tag per capita, when calling the roll, by enclosing boundary's card reader or enclosing coordinating of boundary's card reader and central card reading unit, read the id information of the mobile RFID electronic tag that enters particular place, the id information read is reported to background server to be collected by background server, thereby realize personnel's roll-call statistics, with respect to prior art, described roll-call statistical system is simple in structure, facility and cost are installed lower, applicable to multiple place, use flexibly, call the roll operation fast and accurately.In addition, background server can regularly or be upgraded the id information collected in real time, and, according to the variation of id information, can learn the situation of marching into the arena and publishing of registration of personnel, makes people's flow management more scientific and provide real-time foundation for follow-up control measure.
The accompanying drawing explanation
Fig. 1 is the present invention's statistical system system architecture schematic diagram in one embodiment of calling the roll.
Fig. 2 be the present invention call the roll statistical system mobile RFID electronic tag in falling power points name mode communication channel and enclose the schematic diagram of the communication channel of boundary's card reader.
Fig. 3 is that the present invention calls the roll in statistical system and encloses the schematic diagram that boundary's card reader reads the mobile RFID electronic tag in communication range.
Fig. 4 is the call the roll workflow diagram of statistical system mobile RFID electronic tag in falling power points name mode of the present invention.
Fig. 5 is that the present invention's statistical system of calling the roll is enclosed the workflow diagram of boundary's card reader in falling power points name mode.
Fig. 6 be the present invention call the roll statistical system mobile RFID electronic tag in the time-frequency diversity point of impingement name mode of Background control communication channel and enclose the schematic diagram of the communication channel of boundary's card reader.
Fig. 7 is the call the roll workflow diagram of statistical system mobile RFID electronic tag in the time-frequency diversity point of impingement name mode at Background control of the present invention.
Embodiment
The present inventor finds: tradition adopts the demographics technology of mechanical means, have that applicable scene is limited, construction cost is high, it is dumb to use and it is inaccurate to count, can not Real-time Obtaining stream of people turnover situation etc. problem.Therefore, the present inventor improves prior art, has proposed a kind of novel roll-call statistical system based on the RFID technology, overcomes the generation of the problems referred to above, enlarges the scene applicability and improves the counting accuracy rate.
Below, by specific instantiation explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this instructions.The present invention can also be implemented or be applied by other different embodiment, and the every details in this instructions also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present invention.
It should be noted that, the diagram provided in the present embodiment only illustrates basic conception of the present invention in a schematic way, satisfy in graphic and only show with assembly relevant in the present invention but not component count, shape and size drafting while implementing according to reality, during its actual enforcement, kenel, quantity and the ratio of each assembly can be a kind of random change, and its assembly layout kenel also may be more complicated.
Fig. 1 has shown the present invention's statistical system system architecture schematic diagram in one embodiment of calling the roll.In actual applications, in all kinds of particular places (such as station, exhibition center, subway station, airport or square etc.) of roll-call statistical system of the present invention applicable to indoor or outdoors, for the personnel to entering this particular place call the roll registration and can be in real time and the real-time quantity and the personnel that obtain exactly this scene number login the situation of publishing.As shown in Figure 1, in roll-call statistical system of the present invention, comprise: mobile RFID electronic tag 11, include a plurality of enclose boundary's card reader 12 enclose boundary's card reader pattern, include the central card reading unit pattern of at least one central card reading unit 13, and background server 14, wherein, described enclose that a plurality of in boundary's card reader pattern enclose periphery that card reader compartment of terrain, boundary is laid in particular place each read a little, central card reading unit 13 in described central card reading unit pattern is located at the central area of described particular place and the roll-call zone that its communication range covers described particular place, thereby realize simultaneous mobile RFID electronic tag 11 is carried out to reading of id information.
Below above-mentioned each device is described in detail.
Mobile RFID electronic tag 11 is as mobile node.In the present invention, we have adopted mobile RFID electronic tag 11 as mobile node, and mobile RFID electronic tag 11 has radio communication function.RFID(Radio Frequency IDentifi cation) technology, it is REID, be a kind of communication technology, can identify specific objective and read and write related data by radio signal, and without setting up machinery between recognition system and specific objective or optics contacts.In the present embodiment, in mobile RFID electronic tag 11 in order burning id information is arranged, so, when carrying burning, the related personnel have this mobile RFID electronic tag of mobile RFID electronic tag 11(of id information configurable on corresponding destination object, such as admission ticket, invitation card or mobile terminal etc.) while passing in and out described particular place, can be nowed forming, and when described id information and after relatively personnel are mated, can confirm corresponding personal information by the id information obtained in mobile RFID electronic tag 11, the function that the personnel of realization call the roll and add up.
In order to make, mobile RFID electronic tag 11 can with enclosing boundary's card reader 12, to carry out active data mutual, in actual applications, mobile RFID electronic tag 11 is provided with a plurality of communication channels, comprising: channel is intercepted in broadcast, for receiving from the broadcast message of enclosing boundary's card reader 12 or background server 14; The RFID transmitting channel, for sending the id information of self; Receive ID and intercept channel, for intercepting broadcast message to determine whether the id information of self; Omit feedback channel, for intercepting at described reception ID after channel determines that the broadcast message of intercepting does not have the id information of self, resend the id information of self.
Enclose boundary's card reader 12 and set up communication connection is arranged with central card reading unit 13 and background server 14, for read the id information of each the described mobile RFID electronic tag 11 that passes in and out described particular place in communication range.As mentioned above, enclose boundary's card reader 12 and can each the described RFID electronic tag 11 that pass in and out described particular place effectively be read for making, in the present embodiment, preferably, on each that encloses periphery that card reader 12 compartment of terrains in boundary's are laid in described particular place reads a little.As shown in Figure 1, suppose that described particular place is a rectangular square, each encloses boundary's card reader 12 and is laid on four borders on described rectangle square, wherein according to certain spacing distance, preferably, be laid with one on four angles on described rectangle square and enclose boundary's card reader 12.In addition, the adjacent spacing distance that encloses boundary's card reader 12 is roughly 3 meters to 8 meters (preferably, described spacing distance can be 5 meters), but not as limit, mainly to be determined for the requirement of the counting of calling the roll by single communication coverage and whole roll-call statistical system of enclosing boundary's card reader 12, and, adjacent enclose the spacing distance of boundary's card reader 12 and do not require all obtain identical, such as: be unsuitable for personnel turnover or the zone such as barrier is being arranged, enclosing boundary's card reader 12 can lay more sparsely, that is, the adjacent spacing distance that encloses boundary's card reader 12 can suitably arrange largerly; So and to zones such as main thoroughfare mouths, enclose boundary's card reader 12 can lay denselyr, the adjacent interval region that encloses boundary's card reader 12 can suitably arrange smallerly.Therefore, in described particular place required lay enclose boundary's card reader 12 quantity be by the size of described particular place, spacing distance etc. is set determines.Have, enclose during boundary encloses boundary's card reader pattern described, we have carried out following setting: the adjacent described communication radius that encloses boundary's card reader 12 is identical with their spacing distance.Preferably, enclosing boundary encloses boundary's card reader 12 and can comprise invasion-detecting sensor.Summarize it, enclose boundary's card reader 12 in communication range, read the turnover described particular place each mobile RFID electronic tag 11 in id information mainly comprise: enclose boundary's card reader 12 broadcast singal in its communication range, activated when the mobile RFID electronic tag 11 as mobile node enters in the communication range that encloses boundary's card reader 12 and after receiving described broadcast singal, to the boundary's card reader 12 of enclosing of correspondence, reported id information.Follow-up, enclose boundary's card reader 12 and the id information read can be reported to central card reading unit 13 and/or background server 14.
Enclose for making that boundary's card reader 12 can to carry out active data mutual with mobile RFID electronic tag 11, enclose boundary's card reader 12 and be provided with a plurality of communication channels, comprise: the broadcast signaling transmitting channel, for sending the current broadcast signaling to activate described mobile RFID electronic tag; RFID intercepts channel, the id information sent by described RFID transmitting channel for receiving described mobile RFID electronic tag; Receive ID issue channel, for issue, by described RFID, intercept the id information that channel receives; Omit feedback and intercept channel, the id information sent by described omission feedback channel for receiving described mobile RFID electronic tag.
Central authorities' card reading unit 13 encloses boundary's card reader 12 with each and background server 14 establishes a communications link, for read the data that each encloses boundary's card reader 12 in communication range.In the present embodiment, central authorities' card reading unit 13 is positioned at the central area of described particular place and the roll-call zone that its communication range covers described particular place, therefore, as the communication range of central card reading unit 13 can not cover fully as described in the roll-call zone of particular place, need to take to adjust accordingly measure, such as: increase the quantity of central card reading unit 13 or adjust installation position of central card reading unit 13 etc.In addition, with enclosing boundary's card reader 12, compare, generally: the installation position that encloses boundary's card reader 12 is lower, and central card reading unit is positioned at the central area, square, and it is laid in higher position.Have, central card reading unit 13 and enclose between boundary's card reader 12 while establishing a communications link and at first need to carry out the system adjustment, can read all data of enclosing boundary's card reader 12 to guarantee central card reading unit 13 again.
Below the practical application of the invention described above roll-call statistical system is described in detail further.
In the present invention calls the roll statistical system, background server obtains id information and comprises the time-frequency diversity point of impingement name mode of falling power points name mode and Background control.
The power that falls of being combined with sensory perceptual system is called the roll
Enclose boundary's card reader 12 and possess perceptional function, after the personnel with mobile RFID electronic tag 11 of detecting enter the roll-call zone on square, starter node information read functions, now adopt less emissive power, only read the signal in sensing range, and it is mutual to carry out data, the id information that will read from mobile RFID electronic tag 11 is sent to background server 14.
Refer to Fig. 2, it has shown the communication channel in mobile RFID electronic tag 11 and has enclosed the communication channel in boundary's card reader 12.As shown in Figure 2, all mobile RFID electronic tags 11 are in dormant state under normal circumstances, (for example every 1 second only at set intervals, expectation is less than or equal to 5 meter per seconds with the personnel's of mobile RFID electronic tag 11 the speed of travel) once activate, intercept the reception state of channel to enter broadcast.
When enclosing after boundary's card reader 12 detects personnel with mobile RFID electronic tag 11 and enter in described particular place, enclose boundary's card reader 12 by broadcast signaling transmitting channel broadcast transmission activation instruction, the signal of communication coverage is for example 5 meters.
Mobile RFID electronic tag 11 is intercepted channel by broadcast and is received from the laggard line activating of the activation instruction that encloses boundary's card reader 12, and while according to the time of the broadcast signaling transmitting channel that encloses boundary's card reader 12, carrying out school, and incision low power transmissions state, signal cover is also 10 meters.In this case, only near 2 mobile RFID electronic tag 11～3 enclose boundary's card reader 12 and can receive this signal.Generally, only adjacent two are enclosed boundary's card reader 12 and can receive signal, around the corner, see a-quadrant in Fig. 3, will have 3 to enclose boundary's card reader 12 and can receive this signal.
According to wiping one after another the density Estimation of shoulder, the density of personnel of 5 rice grain pattern letter scopes is about 350, but, according to personnel's walking speed in 1 second, receives approximately 70 mobile RFID electronic tags 11 that the broadcast channel activation instruction activates within 1 second time.70 mobile RFID electronic tags 11 are switched on the RFID transmitting channel and carry out reporting of id information, suppose that it is 32bit that id information reports frame length, and transfer rate is 250kbps, and calling time on is about 2 milliseconds (ms).Can receive reporting of 500 id informations in principle within 1 second.But, owing to there being collision probability, substantially can receive approximately reporting of 70 id informations.Due to being uniformly distributed of time frequency deviation, the collision probability of 70 mobile RFID electronic tags 11 will be less than the collision probability simultaneously activated.
(specifically can refer to Fig. 4) for mobile RFID electronic tag 11: mobile RFID electronic tag 11 sends the id information of self to report to the one or more boundary's card reader 12 of enclosing that establish a communications link by the RFID transmitting channel.In the present embodiment, for minimizing reports missing rate, more preferably, after mobile RFID electronic tag 11 has reported the id information of self, i.e. incision reception ID intercepts channel and is intercepted, enter the state of intercepting of waking up in 1 second once, enclose boundary's card reader 12 and will intercept by described RFID the id information that channel receives by receiving the issue of ID issue channel; If mobile RFID electronic tag 11 listens to the id information that issue has oneself, proceed to broadcast and intercept channel, enter the state of intercepting; If mobile RFID electronic tag 11 for example, does not listen to the id information of oneself in a period of time (: 2 seconds), proceed to the omission feedback channel, again report self ID, for enclosing boundary's card reader 12, by omission, feed back and intercept the id information that channel reception mobile RFID electronic tag 11 sends by described omission feedback channel; Follow-up, after mobile RFID electronic tag 11 has reported the id information of self by the omission feedback channel, incision reception ID intercepts channel and is intercepted, and enters the state of intercepting of waking up in 1 second once, determine whether again the id information that listens to oneself, and, after listening to the id information of oneself, proceed to broadcast and intercept channel, enter the state of intercepting, otherwise, if do not listen to yet the id information of oneself, proceed to the omission feedback channel, again report self ID.
(specifically can refer to Fig. 5) for enclosing boundary's card reader: two transmitting channels (broadcast signaling transmitting channel and reception ID issue channel) and two receive channels (RFID intercepts channel and omits feedback and intercept channel) that enclose boundary's card reader 12 are in running order all the time, continue to send the current broadcast frame by described broadcast signaling transmitting channel, intercept channel by described RFID and receive the id information that mobile RFID electronic tag 11 reports by described RFID transmitting channel, intercept channel by described omission feedback and receive the id information that mobile RFID electronic tag 11 reports by described omission feedback channel, by the current id information received of described reception ID issue channel issue (comprise from RFID and intercept channel and omit feedback and intercept the id information that channel obtains).In the present embodiment, enclose boundary's card reader 12 and be after 100 milliseconds of time delays and rigidly connect by the issue of described reception ID issue channel the id information of receiving, as after the id information issue, do not received the omission feedback information from mobile RFID electronic tag 11, stop announcing described id information, and described id information is sent to background server 14.
Finally, adopt this kind to fall power points name mode, each encloses after id information that boundary's card reader 12 will receive separately reports to background server 14 and is collected by background server 14, owing to may having a plurality of id informations that boundary's card reader 12 receives that same mobile RFID electronic tag 11 reports that enclose, so, may there be redundancy in the id information that background server 14 receives, and background server also needs to get rid of the id information of redundancy, with this, completes and calls the roll and statistical operation.
In addition, background server can regularly or be upgraded the id information collected in real time, and, according to the variation of id information, can learn the situation of marching into the arena and publishing of registration of personnel.
Have again, adopt this kind to fall power points name mode, can be in the situation that the stream of people be less, can tell entering of the unauthorized personnel that do not carry mobile RFID electronic tag 11, so, can be adopted remedial measures by it to background server 14 these information of report, for example report to the police.
The time-frequency diversity collision of Background control is called the roll
Background server is according to the id information be pooled to and total id information comparison, divide the ID zone and carry out the roll-call of time-frequency diversity, be controlled at the quantity of the mobile RFID electronic tag 11 in each time-frequency domain, and the mobile RFID electronic tag in same time-frequency domain 11 reports id information by csma (Carrier Sense Multiple Access, CSMA) collision mode.
Under the time-frequency diversity point of impingement name pattern of this Background control, generally by central card reading unit 13, to be carried out, central card reading unit 13 is all carried out the signal emission with peak power with mobile RFID electronic tag 11.
Background server is controlled described central card reading unit and is announced the roll-call frame, and the frame structure of described roll-call frame is as shown in table 1 below:
As shown in Table 1, in described roll-call frame, the frame frame head that includes but not limited to call the roll, initial ID section, end the ID section, report the time period and report frequency range.
Central authorities' card reading unit 13, under the control of background server 14, both can be taked unordered reporting, and also can take to report in order.
In described unordered reporting, described initial ID section and described termination ID section all are set to 0, the id information be missed all reports simultaneously.
Report in order described, for the id information of omitting, according to id information, divide the different time and frequency range reported.For the ID reported, in this stage, do not make a speech.Generally speaking, the ID of omission is with 10 groupings, and the data between every 1 second are collided and reported.Particularly, mobile RFID electronic tag 11 tentatively judges according to self-ID information the time that self sends, and the precedence in the id information interval of announcing at background server 14 is carried out time delay slightly.Suppose worst situation, be that id information all is missed, the data of 10000 nodes report needs 17 minutes, and background server 14 can increase as required and reports frequency range, and the pattern that can adopt multiband simultaneously to work realizes in the short time all roll-calls.If need a minute multiband, the frame of calling the roll need to repeatedly be sent, as the id information of mobile RFID electronic tag 11 initial ID with end between ID, be switched on the frequency of roll-call frame formulation and carry out the id information transmission.
The id information of mobile RFID electronic tag 11 with the corresponding relation above called time is: (id information of this mobile RFID electronic tag 11/termination ID) * above call time-node frame transmitting time.
Can consult Fig. 6, the mode of operation that the collision of the time-frequency diversity of Background control is called the roll is substantially with to fall power points name pattern identical,, mobile RFID electronic tag 11 in RFID transmitting channel and the omission of RFID additional channel, jump to the omission feedback channel and carry out work, do not delay the working time of subsequent node.
Especially, at central card reading unit 13 working stages, enclose boundary's card reader 12 also in accepting state, intercept RFID transmitting channel and broadcast signaling transmitting channel simultaneously, as the RFID transmitted signal of enclosing 12 receptions of boundary's card reader is broadcasted in broadcast signaling, enclose boundary's card reader 12 and send this id information to background server and carry out standby processing, the id information situation that background server 14 can receive according to it is confirmed whether to receive this id information (as shown in Figure 7).
It should be noted that, the id information of omission is random value substantially, but can be added up in background server 14.Generally, the time-frequency diversity point of impingement name pattern of this Background control can be carried out falling after power points name pattern is finished substantially, it is longer to fall the power points name pattern execution time, the id information of the mobile RFID electronic tag 11 be recorded is more, and the workload of the time-frequency diversity point of impingement name pattern of this Background control is less.But the time-frequency diversity point of impingement name pattern of this Background control also can be carried out separately, all node datas all report by the time-frequency diversity point of impingement name pattern of this Background control, but the execution time can be relatively long.
Call the roll the semireal time that the time-frequency diversity point of impingement name pattern of this Background control also is applicable in described particular place, i.e. every renewal after a while is the current id information existed once, and can filter out the id information changed by background server 14, the marching into the arena and leaving the theatre of registration of personnel.
Especially, central authorities' card reading unit 13 and enclose boundary's card reader 12 and can adopt the mode worked alone respectively also can adopt the mode of both cooperatings, include but not limited to: enclose the id information do not occurred that boundary's card reader 12 snoops in broadcast frame, report to background server 14, and, after enclosing 12 pairs of id informations of boundary's card reader and reading in advance, 14 couples of already present ID of background server are no longer called the roll.
As mentioned above, a kind of roll-call statistical system of the present invention, comprise with id information mobile RFID electronic tag, compartment of terrain is laid in a plurality of boundary's card reader of enclosing of the periphery of particular place, be positioned at least one central card reading unit of the central area of described particular place, and background server, in application, each disposes a mobile RFID electronic tag per capita, when calling the roll, by enclosing boundary's card reader or enclosing coordinating of boundary's card reader and central card reading unit, read the id information of the mobile RFID electronic tag that enters particular place, the id information read is reported to background server to be collected by background server, thereby realize personnel's roll-call statistics, with respect to prior art, described roll-call statistical system is simple in structure, facility and cost are installed lower, applicable to multiple place, use flexibly, call the roll operation fast and accurately.In addition, background server can regularly or be upgraded the id information collected in real time, and, according to the variation of id information, can learn the situation of marching into the arena and publishing of registration of personnel, makes people's flow management more scientific and provide real-time foundation for follow-up control measure.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, be modified or be changed above-described embodiment.Therefore, such as in affiliated technical field, have and usually know that the knowledgeable, not breaking away from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.
Claims (10)
1. a roll-call statistical system, is characterized in that, comprising:
As the mobile RFID electronic tag of mobile node, there is radio communication function and with id information;
Boundary's card reader pattern is enclosed in employing, comprise a plurality of boundary's card reader of enclosing, a plurality of described enclose periphery that card reader compartment of terrain, boundary is laid in particular place each read a little, for the id information of each described mobile RFID electronic tag in the roll-call zone of reading the described particular place of turnover in communication range;
Adopt central card reading unit pattern, comprise at least one central card reading unit, described central card reading unit is located at the central area of described particular place and the roll-call zone that its communication range covers described particular place, for read the id information of mobile RFID electronic tag in the described zone of calling the roll in communication range;
Background server, establish a communications link with described a plurality of described described central card reading unit of enclosing in boundary's card reader or described central card reading unit pattern of enclosing in boundary's card reader pattern, for checking each, describedly enclose the roll-call information of boundary's card reader and/or described central card reading unit and dispatch each and describedly enclose the operation of calling the roll of boundary's card reader and/or described central card reading unit.
2. roll-call statistical system according to claim 1, is characterized in that, described, encloses boundary's card reader pattern, and adjacent two described communication radius that enclose boundary's card reader are identical with their spacing distance; The described boundary's card reader of enclosing comprises invasion-detecting sensor.
3. roll-call statistical system according to claim 1, is characterized in that,
Described mobile RFID electronic tag is provided with a plurality of communication channels, comprising:
Channel is intercepted in broadcast, for receiving from described broadcast message of enclosing boundary's card reader or described background server;
The RFID transmitting channel, for sending the id information of self;
Receive ID and intercept channel, for intercepting broadcast message to determine whether the id information of self;
Omit feedback channel, for intercepting at described reception ID after channel determines that the broadcast message of intercepting does not have the id information of self, resend the id information of self;
The described boundary's card reader of enclosing is provided with a plurality of communication channels, comprising:
The broadcast signaling transmitting channel, for sending the current broadcast signaling to activate described mobile RFID electronic tag;
RFID intercepts channel, the id information sent by described RFID transmitting channel for receiving described mobile RFID electronic tag;
Receive ID issue channel, for issue, by described RFID, intercept the id information that channel receives;
Omit feedback and intercept channel, the id information sent by described omission feedback channel for receiving described mobile RFID electronic tag.
4. roll-call statistical system according to claim 3, is characterized in that, described background server obtains id information and comprises the time-frequency diversity point of impingement name mode of falling power points name mode and Background control.
5. roll-call statistical system according to claim 4, is characterized in that, the described power points name mode of falling comprises;
The described boundary's card reader of enclosing is detecting the mobile RFID electronic tag while entering in described particular place, extremely described mobile RFID electronic tag is to make be proofreaded and cut the low power transmissions state its time according to broadcast channel to send activation instruction by broadcast channel, and described mobile RFID electronic tag reports to the id information included the described boundary's card reader of enclosing established a communications link;
After described mobile RFID electronic tag sends id information, incision receives ID and intercepts channel, describedly enclose the id information that boundary's card reader will receive in broadcast distribution, if described mobile RFID electronic tag listens to the id information of oneself, proceed to broadcast and intercept channel, enter the state of intercepting, if described mobile RFID electronic tag does not listen to the id information of oneself, proceed to the omission feedback channel, again report self ID, feed back and intercept channel and receive the id information that described mobile RFID electronic tag sends by described omission feedback channel by omission for the described boundary's card reader of enclosing, the described boundary's card reader of enclosing is not received the omission feedback information from described mobile RFID electronic tag after the issue id information, stops issuing described id information, and described id information is reported to described background server,
Described background server collects each and describedly encloses the id information that boundary's card reader reports.
6. roll-call statistical system according to claim 5, is characterized in that, also comprises: described background server describedly encloses each id information that boundary's card reader reports according to each, gets rid of the id information of repeated and redundant.
7. roll-call statistical system according to claim 4, is characterized in that, the time-frequency diversity point of impingement name mode of described Background control comprises:
Background server is according to the id information be pooled to and total id information comparison, divide the ID zone and carry out the roll-call of time-frequency diversity, be controlled at the quantity of the mobile RFID electronic tag in each time-frequency domain, the mobile RFID electronic tag in same time-frequency domain reports id information by csma CSMA collision mode.
8. roll-call statistical system according to claim 7, is characterized in that, the time-frequency diversity point of impingement name mode of described Background control:
Described background server is controlled described central card reading unit and is announced the roll-call frame, in described roll-call frame, the frame frame head that includes but not limited to call the roll, initial ID section, ends the ID section, reports the time period and report frequency range; Described central card reading unit, under the control of background server, is taked unorderedly to report or report in order;
In described unordered reporting, the id information be missed all adopts the CSMA mode to report simultaneously;
Report in order described, for the id information of omitting, according to id information, divide the different time and frequency range reported.
9. roll-call statistical system as claimed in claim 4, is characterized in that, described central card reading unit and describedly enclose that boundary's card reader works alone respectively or both cooperatings includes but not limited to:
Describedly enclose the id information do not occurred that boundary's card reader snoops in broadcast frame, report to described background server;
Described enclosing after boundary's card reader reads in advance to id information, described background server is no longer called the roll to already present ID.
10. roll-call statistical system according to claim 1, is characterized in that, the quantity of described central card reading unit is according to the size of the communication range of described central card reading unit and described particular place and fixed.
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