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Numéro de publicationCN101470791 B
Type de publicationOctroi
Numéro de demandeCN 200710125732
Date de publication27 mai 2015
Date de dépôt29 déc. 2007
Date de priorité29 déc. 2007
Autre référence de publicationCN101470791A
Numéro de publication200710125732.3, CN 101470791 B, CN 101470791B, CN 200710125732, CN-B-101470791, CN101470791 B, CN101470791B, CN200710125732, CN200710125732.3
Inventeurs张兴炜
Déposant华为技术有限公司
Exporter la citationBiBTeX, EndNote, RefMan
Liens externes:  SIPO, Espacenet
Radio frequency signal recognition and response method and system, label and reading device
CN 101470791 B
Résumé  Langue du texte original : Chinois
本发明公开了一种射频信号识别、应答方法及系统,标签和阅读器,以降低应答过程中标签的能耗。 The present invention discloses a radio frequency signal recognition, response methods and systems, tags and readers, in order to reduce energy consumption during Answer tags. 在本发明的实施例中,阅读器向管辖范围内的标签发送激活命令,接收到激活命令的标签根据进行标签标识信息回复,并根据激活命令产生应答间距,在该机或命令触发的后续标签标识信息的回复中,都按该应答间距进行回复;阅读器根据管辖范围内的标签标识信息回复情况对标签进行识别,若在一定的时间或轮询次数内未能正确识别标签,则重新发送激活命令,对识别过程进行控制;在本发明是实例中,每一个激活命令对于一个标签来说只随机产生一次应答间距,不用每次回发标签标志信息后都随机产生一个应答间距,节省了随机产生应答间距而带来的能耗。 In an embodiment of the present invention, the reader to the tag within the jurisdiction of sending an activation command received activate command tag identification information according to label reply and acknowledged the pitch according to the activation order in order to trigger subsequent aircraft or label Reply identification information, and are spaced according to the reply to reply; reader under the label of identity information within the jurisdiction of the responses to the tag identification, if within a certain period of time or number of polls failed to correctly identify the tag, then re-send activation commands, for recognition process control; in the present invention is an example, each of the activation command for a label is randomly generated only after a reply pitch, not every postback label flag information randomly generates a response spacing saves random Answer produce energy pitch brought.
Revendications(5)  Langue du texte original : Chinois
1.一种射频信号应答方法,其特征在于,所述方法包括: 接收激活命令; 根据所述激活命令回发标签标识信息,并产生随机数,根据所述随机数产生标签标识信息回发的应答间距,并储存该应答间距以备调用; 根据所述应答间距进行标签识别信息的回发,回发完所述标签识别信息后,等待所述应答间距,然后重新回发所述标签识别信息,直到接收到终止命令或另一次激活命令。 A radio frequency signal response method, wherein the method comprises: receiving the activation command; according to the activation command postback tag identification information, and generates a random number, tag identification information generated based on the random number postback response pitch, and storing the pitch to prepare for call answering; postback tag identification information according to the response spacing, back after finished the tag identification information, wait for the response spacing, and then re-send the tag identification information back until a termination command or another activation command.
2.一种标签,其特征在于,所述标签包括: 接收单元,用于接收控制命令; 应答间距产生单元,用于在接收单元接收到的激活命令时,随机产生应答间距,并储存该应答间距以备调用; 发送单元,用于根据所述激活命令启动回发标签标识,且在每次标签标识回发结束后,等待所述应答间距,进行下一次的标签ID回发。 2. A label, wherein said label comprises: receiving means for receiving a control command; response pitch generating means for, when the receiving unit receives the activation command, the response generated randomly spaced, and storing the response pitch to prepare for calls; sending unit, for initiating postback based on the activation command tag identification, and after the end of each Labeling postback, waiting the response spacing, the next tag ID postback.
3.如权利要求2所述的标签,其特征在于,所述发送单元包括: 执行单元,用于回发标签标识信息; 触发单元,用于根据所述接收单元接收到的激活命令触发所述执行单元回发标签标志信息;并且在所述执行单元回发标签标识信息结束后,等待所述应答间距产生单元产生的应答间距,触发所述执行单元再次进行标签标识信息回发。 3. The label according to claim 2, characterized in that said transmitting means comprises: an execution unit for postback tag identification information; triggering unit, the unit received based on the received activation command for triggering the unit postback label flag information execution; and unit postback after the tag identification information, wait for the response generated by the response generating unit spacing pitch in the execution, triggering the execution unit tag identification information again postback.
4.如权利要求3所述的标签,其特征在于,所述触发单元包括: 使能单元,用于在所述接收单元接收到激活命令后,使使能信号有效,在所述接收单元接收到终止命令后,使所述使能信号无效; 计时单元,用于在所述使能信号有效的情况下,开启计时功能,在所述使能信号无效的情况下,关闭所述计时功能,所述计时功能为:在所述执行单元回发标签标识信息结束后,开始重新计时; 指令单元,用于根据所述接收单元接收到的激活命令,指令所述执行单元进行标签标识信息回发,或者,在所述计时单元计时到所述应答间距产生单元产生的应答间距时,指令所述执行单元进行标签标志信息回发。 4. The label according to claim 3, characterized in that said trigger means comprises: enabling means for after said receiving means receives the activation command, so that the enable signal is valid, the receiving unit receives After termination of commands to make the enable signal is inactive; timing unit, for at the enable signal is valid, the open timing functions, under the enable signal is invalid, turn off the timer function, The chronograph functions: the execution unit after the postback tag identification information, restarts the timer; instructing unit, according to the activation command unit receives the reception, the instruction execution unit tag identification information postback or in the timing unit timed to the response generated by the response generating unit spacing distance, the instruction said execution unit label mark message are sent back.
5.一种射频信号识别系统,其特征在于,所述系统包括: 阅读器,用于向管辖范围的标签发送激活命令,根据管辖范围内的标签回复的标签ID对标签进行识别,若在识别情况满足重置条件的情况下,则重新向管辖范围内的标签发送激活命令; 标签,根据激活命令产生随机数,即在收到一次激活命令只产生一次随机数,利用此随机数产生应答间距,,并储存该应答间距以备调用,在每次回发标签标识信息后,均等待该应答间距,才进行下一次标签标识信息的回发操作,直到接收到终止命令或另一次激活命令。 5. A radio frequency signal recognition system, characterized in that the system comprising: a reader for sending an activation command to the jurisdiction of the label, according to the label reply within the jurisdiction of the tag ID of the tag identification, if the identification Reset the case to meet the conditions, then re-send the activation command to the label within its jurisdiction; tag generates a random number based on the activation command, that once the activation command is received only generate a random number, use this random number generator response spacing ,, and storing the pitch to prepare for call answering, after each postback tag identification information, are waiting for the reply pitch before postback operation next tag identification information until receiving the termination command or another activation command.
Description  Langue du texte original : Chinois
射频信号的识别、应答方法及系统,标签和阅读器 Identification of the RF signal, the response method and system, tags and readers

技术领域 TECHNICAL FIELD

[0001] 本发明涉及通信技术领域,具体涉及一种射频信号的识别、应答方法,系统及标签。 [0001] The present invention relates to the field of communications technology, in particular to identify, answering method, system and label a radio frequency signal.

背景技术 Background technique

[0002] 近年来,RFID (射频识别)应用越来越广泛。 [0002] In recent years, RFID (radio frequency identification) applications more widely. RFID不但可以替换目前通用的条形码,还可以应用于物流仓储中的仓库管理、身份识别、交通运输、食品医疗、动物管理、门禁防盗以及工业军事等多种应用场景,而且,RFID可以适用于环境条件特别恶劣的应用场景,所以给人们的生活带来更多的便利。 RFID not only can replace the current common bar codes, can also be applied in warehouse logistics and warehousing management, identification, transportation, food and medical care, animal management, access control and other security and military industrial application scenarios, and, RFID can be applied to the environment conditions are particularly bad scenarios, so to people's life more convenient.

[0003] 典型的RFID系统一般由两部分组成,即标签(tag)和阅读器(reader)。 [0003] A typical RFID system generally consists of two parts, namely, the label (tag) and readers (reader). 标签是RFID系统的数据载体,每个标签具有唯一的标识信息即标签ID。 RFID tags are data carrier system, each tag having a unique tag identification information, i.e. ID. 标签可以附着在目标对象上,以标识目标对象。 Tags can be attached to the target object to identify the target object. 阅读器的主要任务是向标签发射读取命令信号、接收标签返回的应答,并解码识别,然后,将解码后的信息传输至后台主机,以供后台主机进行处理。 The main task of the reader is to transmit to the tag read command signal, the received tag response is returned, and decoding recognition, and then, the decoded information is transferred to the background host, the host for the background processing.

[0004] 现有技术的其中一种方法是采用无时隙无终止多标签阅读的ALOHA防碰撞识别方法进行标签识别。 One method [0004] The prior art is the use of non-slots with no termination ALOHA anti-collision multi-tag reader identification tag identification method. 该方法中,阅读器向管辖范围内的标签发送激活(wake-up)命令,接收到该wake-up命令的所有标签被激活,向阅读器回发自身的标签ID,阅读器若接收到I个标签ID,则识别该标签;若未接收到标签ID,则说明管辖范围内无可识别的标签,结束识别;若接收到多个标签ID,则继续识别。 In this method, the reader to the tag within its jurisdiction to send activation (wake-up) command, receiving the wake-up command of all tags are activated, sent back to the reader's own tag ID, the reader if I received a tag ID, the identification of the label; if not receiving the tag ID, then the jurisdiction of no identification tag, end recognition; if received more tags ID, continue to be recognized. 下面介绍在阅读器识别过程中,标签的应答流程: Here the reader in the identification process, the label of the response process:

[0005] 如图1所示,标签tagl,tag2和tag3在接收到阅读器的wake-up命令(图1中斜线框所示)后,向阅读器回发标签ID,标签回发标签ID过程中,标签ID传输时长由图中黑框的宽度表示,在一次标签识别的应用场景中,标签ID的传输时长一般相同。 [0005] Figure 1, label tagl, tag2 and tag3 receiving the reader wake-up command (hatched box shown in Figure 1), the label sent back to the reader ID, tag ID tag postback process, when the tag ID transmission length is represented by the figure of the width of the black box, in a tag identification application scenarios, the transmission tag ID is generally the same length of time. 图1所示的情况下,在阶段1,有3个标签接收到wake-up命令后回发了标签ID,此后,每个标签产生一个随机数,根据产生的随机数,得到一个随机时间间隔(应答间距,由图1中每个标签对应的黑框之间的空白间隔长度表示),等待该应答间距后,再次进行标签ID的回发;不论标签是否被识别,以后每次回发后,各标签都随机产生一个应答间距,经过该应答间距后,又再次回发标签ID,如此反复,直到阅读器发送终止命令为止。 In the case shown in Figure 1, in stage 1, there are three tags received wake-up command after postback the tag ID, thereafter, each tag generates a random number, according to the generated random number to obtain a random time interval (Answer pitch, is represented by a blank space length of each label in Figure 1 between the corresponding black box), after waiting for the reply pitch again postback tag ID; regardless of whether the label is identified, after each subsequent postback, Tags are randomly generated each pitch an answer, after the reply pitch, and back hair again tag ID, and so forth, until the reader sends termination command.

[0006] 在标签的识别过程中,若各标签的标签ID回发发生碰撞,则阅读器不可识别发生碰撞的标签,若有标签的标签ID的回发不与其它标签发生碰撞,则该标签可被成功识别。 [0006] In the identification process tag, if the tag ID of each tag postback collision, the reader can not identify collision tags, if postback label Label ID does not collide with other labels, the label It can be successfully identified. 下面结合图1介绍该识别流程中的标签的碰撞以及被识别情况,在阶段1,由于各标签都是根据wake-up命令回发标签ID,所以各个标签回发标签ID的通信时间段完全重合,tagl,tag2和tag3在阶段I发生全碰撞(若两个标签回发标签ID的通信时间段完全重叠,即当两个标签应答的起始时间相等(tsl= ts2)时,则称这两个标签在该次回发过程中发生全碰撞;而如果只有ID中的一部分重叠,即当两个标签应答的起始时间满足条件tsl-tID< t s2< tsl+tID,且ts2# t sl (tID为标签ID传输时长)时,则称这两个标签在该次回发过程中发生部分碰撞。),tagl,tag2和tag3在传送完自身的标签ID后,均随机产生一个应答间距,在图1中,tag3的应答间距最短,tag2的应答时间最长,tagl的应答时间居中,形成阶段2的应答情况:在阶段2中,tag2的回发标签ID的通信时间段与tagl和tag3的回发标签ID通信时间段没有任何重叠,此时tag2可被成功识别,而tagl和tag3的回发标签ID通信时间段有部分重叠,即tagl和tag3在此次回发过程中发生了部分碰撞,tagl和tag3在此次回发过程中,不能被识别。 Figure 1 below with the identification process described in collisions labels, and is recognized case, in phase 1, since the tags are sent back to the tag ID based wake-up command, so completely overlap each tag ID tag postback communication period , tagl, tag2 and tag3 full collision occurred in Phase I (if two labels postback tag ID of communication completely overlap period, namely when the starting time of the response of the two labels are equal (tsl = ts2), the claimed two tags Full collision occurred in the second postback process; and if only part of the overlapping ID, that is, when the start time to meet the conditions of the two labels reply tsl-tID <t s2 <tsl + tID, and ts2 # t sl ( tID long as the tag ID transmission), the part called the collision of these two labels occur in the second postback.), tagl, tag2 and tag3 after the transfer completed its tag ID, are randomly generate a response spacing, in FIG. 1, tag3 response shortest distance, the longest response time tag2, tagl centered response time, form response situation Phase 2: In phase 2, tag2 postback tag ID of the communication period of back and tagl and tag3 Hair tag ID communication time period without any overlap, then tag2 can be successfully identified and postback tag ID communication period tagl and tag3 have some overlap, that part tagl and tag3 collision took place at the postback process, tagl and tag3 in the postback process, can not be identified. 根据上面的描述,结合图1可知,在阶段3,tagl,tag2和tag3两两部分碰撞;在阶段4,tagl分别与tag2和tag3部分碰撞,而tag2和tag3发生全碰撞。 According to the above description, in conjunction with Figure 1 shows, in stage 3, tagl, tag2 and tag3 two collision of two parts; 4, tagl respectively tag2 and tag3 part collision stage, tag2 and tag3 full collision occurred.

[0007] 在对现有技术的研宄和实践过程中,发明人发现现有技术存在以下问题: [0007] In a study based on existing technology and practice, the inventors have found the following problems of the prior art:

[0008] 现有技术中,标签每次向阅读器回发标签ID时,都需要触发随机数发生器产生随机数,根据产生的随机数随机产生应答间距,等待应答间距后进行下一次向阅读器回发标签ID的操作,此时又触发随机数发生器产生随机数,而只有在所有标签被均被识别时,标签才停止向阅读器发送标签ID,所以标签产生随机数的次数比较多,而每次调用随机数发生器模块产生随机数均会消耗一定的标签能源,这对于采用无时隙无终止多标签阅读的ALOHA防碰撞识别方法中的无源标签而言,标签的能耗很高。 [0008] The prior art, when the label each time to send the reader back to the tag ID, are required to trigger the random number generator generates a random number, according to the generated random number after answering random spacing, waiting for a response to reading the next pitch frequency ID tag is postback operation, in which case they trigger the random number generator generates a random number, but only when all tags are are identified before they stop sending the tag ID tag to the reader, so the label producing random numbers more , and each module calls a random number generator generates a random number will consume some energy label, which no-no termination slot ALOHA anti-collision multi-tag identification method in the passive tag reading, the energy label high.

发明内容 SUMMARY OF THE INVENTION

[0009] 本发明实施例提供了一种射频信号识别、应答方法及系统,标签和阅读器,以降低应答过程中标签的能耗。 [0009] The embodiment of the invention there is provided a radio frequency signal recognition, response methods and systems, tags and readers, in order to reduce energy consumption during Answer tags.

[0010] 本发明实施例提供了一种射频信号应答方法,包括: [0010] The present invention provides an RF signal response method, comprising:

[0011] 接收激活命令; [0011] receiving the activation command;

[0012] 根据所述激活命令回发标签标识信息,并随机产生标签标识信息回发的应答间距; [0012] According to the activation command postback tag identification information, and randomly generated tag identification information postback response spacing;

[0013] 根据所述应答间距进行标签标识信息回发。 [0013] The label identification information based on the response spacing postback.

[0014] 本发明实施例还提供了一种射频信号识别方法,包括: [0014] Embodiments of the present invention also provides a radio frequency signal recognition method, comprising:

[0015]向管辖范围内的标签发送激活命令,所述激活命令用于触发接收到该命令的标签回发标签标识信息,并随机产生标签标识信息回发的应答间距,根据所述应答间距进行标签标识信息回发; [0015] sends the tag within the jurisdiction of the activation command, the activation command is used to trigger the command received label postback tag identification information, and randomly generate responses pitch postback tag identification information, according to the response spacing Labeling information back hair;

[0016] 接收管辖范围内的标签回发的标签标识信息,对标签进行识别; [0016] Labeling Information tab within the scope of the jurisdiction of the receiving postback, identification tag;

[0017] 若识别情况满足重置条件,则重新向管辖范围内的标签发送激活命令。 [0017] If the reset condition to identify conditions is satisfied, then re-send the activation command to the label within its jurisdiction.

[0018] 本发明实施例还提供了一种标签,包括: [0018] Embodiments of the present invention further provides a label comprising:

[0019] 接收单元,用于接收控制命令; [0019] a receiving unit for receiving a control command;

[0020] 应答间距产生单元,用于接收单元接收到的激活命令,随机产生应答间距; [0020] answering pitch generating means, means for receiving the activation command received, randomly generated response spacing;

[0021] 发送单元,用于根据所述接收单元接收到的激活命令,回发标签标志信息;根据所述应答间距进行标签标识信息回发。 [0021] The transmitting unit for unit received based on the received activation command, postback tag identification information; label identification information based on the response spacing postback.

[0022] 本发明实施例还提供了一种阅读器,包括: [0022] The present invention further provides a reader, comprising:

[0023] 发送单元,用于发送控制命令; [0023] The transmitting unit for transmitting control commands;

[0024] 识别单元,用于接收被激活的标签回发的标签标识信息,并根据接收到的标签标识信息对标签进行识别;所述被激活的标签为接收到所述发送单元发送的激活命令的标签; [0024] identification unit for receiving tag identification information of the label is activated postback, and based on the received tag identification information identifying label; the label is activated to receive a transmission unit transmitting to the active command tags;

[0025] 控制单元,用于在所述识别单元的识别情况满足重置条件的情况下,控制所述发送单元重新发送激活命令。 [0025] a control unit for the next case in the recognition unit identification reset condition is satisfied, the transmission control unit to re-send the activation command.

[0026] 本发明实施例还提供了一种射频信号识别系统,包括: [0026] Embodiments of the present invention further provides a radio frequency signal recognition system, comprising:

[0027]阅读器,用于向管辖范围的标签发送激活命令,根据管辖范围内的标签回复的标签ID对标签进行识别,若在识别情况满足重置条件的情况下,则重新向管辖范围内的标签发送激活命令; [0027] The reader for sending an activation command to the jurisdiction of the label, according to the label reply within the jurisdiction of the tag ID tag to identify, under the circumstances if the recognition reset condition is satisfied, then again within the jurisdiction The tag sends an activation command;

[0028] 标签,用于根据接收到的激活命令,回发标签ID,并根据激活命令随机产生应答间距,根据所述应答间距进行标签ID回发。 [0028] The label for the activation according to the received command, postback tag ID, and randomly generated answer spacing according to the activation command label ID postback based on the response distance.

[0029] 以上技术方案可以看出,本发明实施例中的标签根据阅读器的激活命令进行标签标识信息的回发以及应答间距的产生,每一个激活命令对于一个标签来说只随机产生一次应答间距,不用每次回发标签标志信息后都随机产生一个应答间距,节省了随机产生应答间距而带来的能耗。 [0029] The above technical solution can be seen that the present embodiment of the invention the tag and send back responses pitch Labeling information generated according to the activation command reader, each active command randomly generate a label for a reply to pitch after postback The labels do not always have randomly generates a reply message spacing, randomly generated energy savings brought responses pitch.

附图说明 Brief Description

[0030] 图1是现有技术射频识别过程中的标签应答示意图; [0030] FIG. 1 is a prior art radio frequency identification tag response during the schematic;

[0031]图2是本发明实施例射频信号应答方法的流程图; [0031] FIG. 2 is a flowchart illustrating the method of RF signal response of the present invention;

[0032]图3是本发明实施例标签在进行射频信号应答过程中的碰撞情况示意图; [0032] FIG. 3 is an embodiment of the RF signal carrying the tag of the present invention, the collision response process schematic;

[0033] 图4是本发明实施例射频信号识别方法的流程图; [0033] FIG. 4 is a flowchart illustrating a radio frequency signal recognition method of the present invention;

[0034]图5是本发明提供的标签的一个实施例不意图; [0034] FIG. 5 is a label of the present invention provides examples are not intended;

[0035] 图6是本发明提供的阅读器的一个实施例的示意图; [0035] FIG. 6 is a schematic diagram of one embodiment of the present invention provides a reader of;

[0036]图7是本发明提供的射频信号识别系统的一个实施例的示意图。 [0036] FIG. 7 is a schematic diagram of an embodiment of the present invention to provide a radio frequency signal recognition system.

具体实施方式 DETAILED DESCRIPTION

[0037] 本发明实施例提供一种射频信号应答方法,能够降低应答过程中标签的能耗。 [0037] The embodiment of the invention provides a method of radio frequency signal response, can reduce energy consumption during Answer tags.

[0038] 本发明实施例的应答过程中,标签根据wake-up命令触发产生随机数,即在收到一次wake-up命令只产生一次随机数,利用此随机数产生应答间距,此后每次回发标签ID后,均等待该应答间距,进行下一次标签ID回发操作,直到接收到终止命令或另一次wake-up 命令。 [0038] response process embodiment of the present invention, the tag is triggered to generate random numbers based on wake-up command, that is, in receipt of a wake-up command only generates a random number, use this random number generator response spacing, and thereafter every postback After the tag ID, are waiting for the reply pitch, the next tag ID postback operation until receiving the termination command or another wake-up command.

[0039] 请参阅图2,是本发明实施例射频信号应答方法的流程图,包括步骤: [0039] See Figure 2 is a flow diagram of the RF signal answering method embodiment of the present invention, comprising the steps of:

[0040] 步骤201、标签接收阅读器的激活命令;步骤202、根据所述激活命令回发标签的标识信息,并根据所述激活命令随机产生应答间距; [0040] Step 201, the tag reader receives an activation command; step 202, according to the activation command postback tag identification information, and randomly generated answer spacing according to the activation command;

[0041] 参阅图3的阶段1,标签接收阅读器的wake-up命令后,向阅读器回发标签ID,在此阶段,标签接收到rake-up命令后就发送自身的标签ID,可认为接收到wake-up命令的标签同时发送自身的标签ID,当各标签的标签ID传输时长相同时,则如应答情况如图3的阶段I所示。 [0041] FIG. 3, see Phase 1, the tag receives the reader's wake-up command to send the reader back to the tag ID, at this stage, the label received rake-up command after transmits its tag ID, can be considered wake-up command is received while the tag transmits its tag ID, tag ID when the transmission time of each tag looks the same time, the transponder as the case shown in FIG. Phase I 3.

[0042] 需要指出的是,本发明实施例并不限定标签ID的传输时长是否相等,通过阅读本文,应当理解,标签ID传输时长是否相等并不影响对本发明提供的实施例要解决的技术问题,即在本发明的实施例中,假定各标签ID的传输时长相等并不失本发明实施例的一般性。 [0042] It should be noted that the transmission embodiment of the present invention is not limited to the tag ID when the length is equal, by reading this article, it should be understood that when the tag ID transmission length is equal to not affect the technical problem embodiment of the present invention provides to solve that in the embodiment of the present invention, it is assumed the transmission of each tag ID looks like are not lost when the general embodiment of the present invention.

[0043] 为描述方便,下文以各标签的标签ID传输时长相等为例进行说明。 [0043] To facilitate the description, below, to the tag ID transmitted when each tag looks, etc. example.

[0044] 在阶段1,各标签同时发送标签ID,且回发标签ID的通信时间段完全重叠,在此阶段,tagl,tag2和tag3发生全碰撞。 [0044] 1, each tag and sends the tag ID, tag ID and postback communication period completely overlap in phase, at this stage, tagl, tag2 and tag3 full collision occurred. 在现有技术中,标签的每一次标签ID的回发都伴随着一次随机数的产生,标签的应答间距根据产生的随机数确定,而在在本发明实施例中,各标签根据接收到的wake-up命令产生随机数,根据随机数产生相应的应答间距,并储存该应答间距以备调用,直到接收到新的wake-up命令重新产生新的应答间距并刷新原有应答间距为止。 In the prior art, the label tag ID every postback are accompanied by a random number generation, response spacing label is determined according to the generated random number, while in the embodiment of the invention, each label based on the received wake-up command generates a random number to produce a corresponding response spacing based on random numbers, and storing the pitch to prepare for call answering, until receiving a new wake-up command to re-generate new responses and refresh the original pitch spacing reply so far. 如图3所示,tagl根据wake-up命令产生的随机数对应的应答间距为Tl ;tag2根据wake-up命令产生的随机数对应的应答间距为T2 ;tag3根据wake-up命令产生的随机数对应的应答间距为T3。 3, tagl based on random numbers generated by wake-up command response corresponding to a pitch of Tl; tag2 random number generated based on wake-up command corresponding to the pitch of the response T2; tag3 random number generated according to the wake-up command response pitch corresponding to T3.

[0045] 步骤203、按所述应答间距进行应答; [0045] Step 203, according to the response spacing answer;

[0046] 各标签在后续的标签ID回发过程中,每次回发完标签ID后,等待该标签根据wake-up命令产生的应答间距,然后重新回发标签ID。 [0046] Each tag in a subsequent postback process ID tag, back after each finished label ID, wait for an answer label produced according to the pitch of the wake-up command, and then re-postback tag ID. 如图3所示,tagl, tag2和tag3在接收到wake-up命令回发标签ID后,分别等待随机产生的应答间距Tl,T2和T3之后再次进行标签ID回发,此后,tagl在每次回发标签ID之后,均等待Tl的应答间距进行下一次标签ID回发。 3, tagl, tag2 and tag3 after receiving the wake-up command postback tag ID, are waiting for a response after random spacing Tl, T2 and T3 label ID again back hair, and thereafter, tagl each return a tag ID tag ID after postback hair are waiting for the next pitch Tl response. tag2和tag3的情况类似。 Similar situation tag2 and tag3 of. 重复步骤202和203直到接收到终止命令或新的wake-up 命令。 Repeat steps 202 and 203 until a termination command or a new wake-up command.

[0047] 如图3所示,在阶段2,tagl, tag2和tag3两两发生部分碰撞,均不能被识别;在阶段3,tagl分别和tag2和tag3部分碰撞,均不能被识别;在阶段4,tagl和tag3发生部分碰撞,不能被识别,tag2在此阶段的应答(即回发标签ID)过程中,无其它标签与之发生碰撞,可被阅读器识别。 [0047] FIG. 3, in stage 2, tagl, tag2 and tag3 twenty-two partial collision, are not to be identified; in phase 3, tagl respectively tag2 and tag3 part collision, are not to be identified; in stage 4 , tagl and tag3 partial collision can not be identified, tag2 at this stage of the response (ie a postback tag ID) process, no other label with a collision, the reader can be identified. 可以看到只要随机产生的应答间距不是完全一样(完全碰撞),经过一段时间之后各个标签即可因为相互之间应答间距差的累积而能够被单独识别。 We can see the answer as long as the pitch is not exactly the same as randomly generated (full collision), after a period of time of each tag can answer the spacing between each other because of poor accumulation can be identified separately.

[0048] 在本发明的实施例中,由于无源标签内随机数的产生由wake-up命令触发,而不是每次回发标签ID都要伴随一次随机数的产生,所以可在很大程度上减少标签的能耗。 [0048] In an embodiment of the present invention, since the inner passive tags random number generation triggered by wake-up command, rather than on each postback tag ID must be accompanied by a random number generation, it is possible to a large extent reduce energy labels.

[0049] 在无时隙无终止的ALOHA防碰撞识别方法中,标签处于被动的应答状态,标签接收阅读器的命令,然后按照阅读器的命令进行响应的动作,标签的动作简单,与阅读器之间的通信也简单,标签的识别有赖于阅读器命令,有鉴于此,为有效控制以本发明实施例提出的射频信号应答方法进行应答的标签,本发明实施例提出了一种射频信号识别的方法,如图4所示,包括 [0049] In unslotted ALOHA anti-collision terminated without identification method, the label in a passive state response, the tag reader receives the command, and then follow the reader response command action, action tags is simple, and the reader Communication between the simple, identification tag reader command depends view of this, for the effective control of the response of the tag response RF signals embodiment the method proposed in the present invention, the embodiment proposes a radio frequency identification signal of the present invention The method, as shown in Figure 4, comprising

[0050] 步骤401、阅读器向管辖范围内的标签发出激活命令; [0050] In step 401, the reader activation command is given to the tag within its jurisdiction;

[0051]阅读器开始识别时,首先向管辖范围内的标签发出激活命令,管辖范围内的标签根据激活命令,将标签ID回发给阅读器,并且根据激活命令随机产生应答间距,此后,均按该随机产生的应答间距进行应答,直至接收到新的激活命令或终止命令。 [0051] When the reader begin to identify, first issue the command to activate the tag within the jurisdiction of the label within its jurisdiction according to the active command, the tag ID sent back to the reader, and randomly generated response spacing according to the active command, after all Press Answer pitch of the randomly generated respond until it receives a new command or terminate the activation command.

[0052] 步骤402、阅读器接收管辖范围内的标签回发的标签ID,对标签进行识别; [0052] Step 402, the reader receives the tag within the jurisdiction of the postback tag ID, tag identification;

[0053] 当接收到一个标签回发的标签ID,即某个标签ID的回发过程中未与其他标签ID的回发发生碰撞时,阅读器识别该标签;当接收到多个标签回发的标签ID,即这多个标签在标签ID的回发过程中发生碰撞时,阅读器不能识别这些标签。 [0053] When receiving a label postback tag ID, a label that is sent back to the process ID tag ID is not with other postback event of a collision, the reader identifies the tag; when receiving multiple labels postback The tag ID, namely when the collision occurred in the plurality of label postback process ID tag, the reader does not recognize these tags.

[0054] 步骤403、若阅读器在预定时间或预定的轮询次数内未能正确识别标签,则重新向管辖范围内的标签发送激活命令; [0054] Step 403, if the reader within a predetermined time or a predetermined number of polls failed to identify the correct label, the label will re-send the activation within the jurisdiction of command;

[0055] 在标签的回发过程中,随机应答时间和标签ID传输时长都是最小时间单位t的整数倍,所述的预定时间可根据标签ID传输时长和应答间距确定,现分析两个标签A,B的应答情况,以作为所述预定时间的选取参考: [0055] In the postback process tags, the smallest unit of time length is an integer multiple of t random response time and tag ID transmission, the predetermined time may vary according to the length and spacing of the response tag ID transmitted, are analyzed as two labels A, B's response situations, as the selection of the predetermined time reference:

[0056] 考虑标签ID传输时长为k X t (k为自然数),且两个标签A,B在第一次产生随机应答间距后的第一次标签ID回复中,发生(k-1) Xt的时间重叠,假设A的应答间距为NXt (N为自然数),B的应答间距为(N+l) X t,则从应答次数上考虑,A和B分别再经过k-Ι次应答则不发生碰撞;从时间上考虑,阅读器在发送激活命令[(k-1) Xk+kXN] Xt后,可正确识别A,在发送激活命令[(k-1) Xk+kX (N+l)] Xt后,可正确识别B。 [0056] When considering the tag ID transmission length k X t (k is a natural number), and two labels A, B at the first pitch generating random response after the first tag ID reply, the occurrence of (k-1) Xt Time overlap, assuming the pitch A response is NXt (N is a natural number), the response spacing B is (N + l) X t, consider the response from the frequency, A and B, respectively, and then after k-Ι times not answer collision; from the viewpoint of the time, the reader sends an activation order in [(k-1) Xk + kXN] after Xt, can correctly identify A, sending the activation command [(k-1) Xk + kX (N + l) After] Xt, can correctly identify B.

[0057] 而在A和B在第一次产生随机应答间距后的第一次标签ID回复中,若发生的时间重叠小于(k-1) Xt,则只需要更少的标签ID回复次数和更少的时间就可不发生碰撞,被正确识别,所以阅读器可选取在发送激活命令[(k-1) Xk+kXN] Xt后,若仍未能正确识别标签,则重新向管辖范围内的标签发送激活命令;同理,如果在上一次正确识别标签后的一段预定时间内,未能正确识别标签,阅读器也可重新向管辖范围内的标签发送激活命令,以调整各标签的应答间距,以利于标签的识别。 [0057] In the A and B at the first pitch generating random response after the first tag ID reply, overlapping time the event is less than (k-1) Xt, only need less tag ID number and reply less time possible without collisions, it is correctly identified, so the reader can be selected after sending the activation command [(k-1) Xk + kXN] Xt, if not been able to correctly identify the tag, then re-apply to the jurisdiction of Tag sending an activation command; Similarly, if a predetermined time after a correct identification label, failure identification tag correctly, the reader can also resend the activation command to the label within its jurisdiction, in order to adjust the pitch of each transponder tag , in order to facilitate the identification tag.

[0058] 当然,预定时间的选取可由用户按上述规则自定义,也可由系统预设,该预定时间的设定反映了标签识别中所期望的错误控制等级,即预定时间内没有正确识别标签,就认为标签根据激活命令产生的应答间距不合适(应答间距产生错误),重新发送激活命令,使标签重新产生应答间距,从而根据预设时间对应答过程进行调整,控制错误等级。 [0058] Of course, the user can select a predetermined time according to the above rule custom, but also by the system default, this setting predetermined time reflects the tag identification in the desired level of error control, ie without proper identification tag within a predetermined time, considered in accordance with the label producing spacing inappropriate activation command response (Response pitch error), re-send the activation command, the label re-generate responses spacing, thus according to a preset time to adjust to the response process, control error levels.

[0059] 另外,也可根据预定的轮询次数来控制wake-up命令的重发。 [0059] In addition, according to a predetermined number of polls to control the retransmission wake-up command. 轮询次数为阅读器定义的轮询的次数,每一个轮询的时间长度是动态变化的,可以随着标签数的增加或减少改变大小,而且足够剩余标签传输其标签ID。 The number of polling polling times defined for the reader, the length of time for each polling is dynamic, you can tag along with the increase or decrease in the number of changes in size and enough remaining tag transmits its tag ID. 如图3所示,每个阶段分别对应一次轮询,在这四个阶段中,阅读器连续地收到标签回发的标签ID。 3, each stage corresponding to a poll in four phases, the reader is continuously receiving the label back label issued ID. 阅读器可以知道每一个轮询的长度,因而可以统计轮询的次数。 The reader can know the length of each poll, so you can count the number of polling. 若在一定的轮询次数内都没有标签被正确识别,则可重发激活命令,对应答过程进行调整。 If a certain number of polls have no labels are correctly recognized, you can resend the activation command, the response to the adjustment process. 故,可设定一个预定的轮询次数来控命令的重发,对应答过程进行调整,以利于标签的识别。 It can be set to a predetermined number of times to control the retransmission polling command, the response to the adjustment process, in order to facilitate the identification tags.

[0060] 同样,该预定的轮询次数也可由用户根据需要自定义或由系统预先设定。 [0060] Similarly, the predetermined number of polls can also be user-defined or pre-set by the system as needed.

[0061] 本发明实施例提出的射频信号识别方法,利用激活命令触发管辖范围内的标签随机产生标签ID回复的间隔时间,通过激活命令对标签的识别进行调整,由于被动标签在产生随机应答间距时需要调用随机数发生器,这将耗费一定的能量,而在本实施例所提出的方法中,阅读器管辖范围内的标签不必每次进行标签ID回复之后都随机产生应答间距,节省了标签能耗。 [0061] Examples presented RF signal recognition method of the present invention, the use of an active command trigger tag within the jurisdiction of random intervals tag ID reply by activating the command identification tag to be adjusted due to the passive transponder tag generates a random spacing When you need to call a random number generator, which will cost some energy, but in this embodiment the proposed method, the label within the scope of the jurisdiction of the reader does not have to respond each time after the tag ID are randomly generated response spacing, saving tag energy consumption.

[0062] 本发明实施例还提供了一种标签,如图5所示,该标签包括: [0062] Embodiments of the present invention further provides a label, as shown in Figure 5, the label comprising:

[0063] 接收单元501,用于接收控制命令; [0063] a receiving unit 501 for receiving the control command;

[0064] 接收单元501接收阅读器的控制命令,控制命令包括激活命令,终止命令等。 [0064] receiving unit 501 receives a control command the reader, the control command including activation command, terminate commands.

[0065] 应答间距产生单元502,用于根据接收单元501接收到的激活命令,随机产生应答间距; [0065] answering pitch generation unit 502, based on the received activation command receiving unit 501 for generating a random response spacing;

[0066] 标签的接收单元每接收到一次激活命令,应答间距产生单元502就随机产生一次应答间距。 [0066] tag receiving unit every time activation command is received, the response on the pitch generation unit 502 randomly generates an answer spacing.

[0067] 发送单元503,用于根据所述接收单元接收到的激活命令,回发标签ID ;根据所述应答间距进行标签标识信息回发。 [0067] transmitting unit 503, according to the receiving unit for receiving the activation command, postback tag ID; label identification information based on the response spacing postback.

[0068] 发送单元503根据接收单元501接收到的阅读器发送的激活命令,回发标签10,即标签的发送单元503是由阅读器的激活命令启动回发标签ID的,且在每次标签ID回发结束后,等待所述应答间距产生单元502根据激活命令随机产生的应答间距,进行下一次的标签ID回发。 [0068] transmitting unit 503 receives an activation command to the receiving unit 501 according to the reader to send, send the unit back to the hair tag 10, that label 503 is initiated by the activation command postback tag reader ID, and each tag ID after postback end, waiting for the reply pitch spacing unit 502 generates answer randomly generated according to the activation command, the next tag ID postback.

[0069] 进一步地,上述的发送单元503可包括: [0069] Further, the above-described transmission unit 503 may include:

[0070] 执行单元,用于回发标签ID ; [0070] execution unit for postback tag ID;

[0071] 触发单元,用于根据所述接收单元501接收到的激活命令触发所述执行单元回发标签ID,并且在所述执行单元回发标签ID结束后,等待所述应答间距产生单元502产生的应答间距,触发所述执行单元再次进行标签ID回发。 [0071] triggering unit, for receiving the activation command to the receiving unit 501 according to the trigger unit postback tag ID of the execution, and the execution unit after postback tag ID, wait for the response generating unit 502 pitch response pitch generated to trigger the execution unit tag ID again postback.

[0072] 更进一步,上述的触发单元可包括: [0072] Furthermore, the above-mentioned triggering unit may include:

[0073] 使能单元,用于在所述接收单元501接收到激活命令后,使使能信号有效,在所述接收单元接收到终止命令后,使所述使能信号无效; [0073] enabling unit, the receiving unit 501 for receiving the activation command, so that the enable signal is valid, after the receiving unit receives the termination command, so that the enable signal is inactive;

[0074] 计时单元,用于在所述使能信号有效的情况下,开启计时功能,在所述使能信号无效的情况下,关闭计时功能,所述计时功能为:在所述执行单元回发标签ID结束后,开始重新计时; [0074] timing unit, for at the enable signal is valid, the open timing functions, under the enable signal is invalid, turn off the timer function, the chronograph functions: the execution unit back latecomer tag ID end, restarts the timer;

[0075] 指令单元,用于根据所述接收单元501接收到的激活命令,指令所述执行单元进行标签ID回发或在所述计时单元计时到所述应答间距产生单元502产生的应答间距时,指令所述执行单元进行标签ID回发。 [0075] instruction unit, based on the received activation command to receiving unit 501, the instruction execution unit performs the tag ID postback timing unit or in the timing of the response to the pitch generation unit 502 generates a response spacing , instructing the execution unit tag ID postback.

[0076] 在本发明的实施例中,标签由wake-up命令触发产生随机数,而不是每次回发标签ID都要伴随一次随机数的产生,所以可在很大程度上减少标签的能耗。 [0076] In an embodiment of the present invention, the label is triggered by the wake-up command generates a random number, instead of every postback tag ID must be accompanied by a random number generation, energy consumption can be reduced to a great extent the label .

[0077] 本发明实施例还提供了一种阅读器,如图6所示,该阅读器包括: [0077] Embodiments of the present invention further provides a reader, as shown in Figure 6, the reader includes:

[0078] 发送单元601,用于发送控制命令; [0078] a transmission unit 601 for transmitting control commands;

[0079] 在标签识别过程中,发送单元601向管辖范围内的标签发送rake-up命令,以激活接收到wake-up命令的标签进行前述的本发明实施例的标签ID回发过程;向管辖范围内的标签发送终止命令,以终止识别。 Tag ID postback embodiment [0079] In the tag identification process, the sending unit 601 sends rake-up commands to the tag within its jurisdiction, in order to activate the received tag wake-up command was foregoing the present invention; to jurisdiction tags within the scope of the transmission termination command to terminate recognition.

[0080] 识别单元602,用于接收被激活的标签回发的标签ID,并根据接收到的标签ID对标签进行识别;所述被激活的标签为接收到所述发送单元601发送的wake-up命令的标签; [0080] identification unit 602 for receiving the active tab postback tag ID, and based on the received tag ID of the tag identification; the label is activated to receive the wake- sent by the sending unit 601 tag up order;

[0081] 控制单元603,用于在所述识别单元602的识别情况满足重置条件的情况下,控制所述发送单元601重新发送激活命令。 [0081] The control unit 603, the case 602 is used in the identification of the reset conditions are satisfied the recognition unit, the control unit 601 transmits the re-send the activation command.

[0082] 所述阅读器还可包括: [0082] The reader may further comprise:

[0083] 设定单元604,用于根据标签标识信息传输时长及标签的应答间距确定预定时间,或预先设定所述预定时间; [0083] setting unit 604 for long distance and tag response is determined according to a predetermined time when the transmission tag identification information, or the predetermined time set in advance;

[0084] 对应地,所述控制单元603包括: [0084] Correspondingly, the control unit 603 comprises:

[0085] 判断单元,用于判断在所述预定时间内是否有标签被正确识别; [0085] judgment means for judging within a predetermined time whether the identification tag is correct;

[0086] 重置单元,用于在所述判断单元判断在所述预定时间内无标签被正确识别的情况下,指令所述发送单元重新发送激活命令。 [0086] reset means for said determination means determines that no next label is properly recognized, the instruction transmitting unit resend the activation command within the predetermined time.

[0087] 或者,所述阅读器还可包括: [0087] Alternatively, the reader may further comprise:

[0088] 设定单元604,用于设定预定的轮询次数; [0088] setting unit 604 for setting a predetermined number of polls;

[0089] 对应地,所述控制单元603包括: [0089] Correspondingly, the control unit 603 comprises:

[0090] 判断单元,用于判断在所述预定的轮询次数内是否有标签被正确识别; [0090] judgment means for determining within said predetermined number of times if there is a polling tag to be identified correctly;

[0091] 重置单元,用于在所述判断单元判断在所述预定的轮询次数内无标签被正确识别的情况下,指令所述发送单元重新发送激活命令。 [0091] reset means for said determination means determines that no next label is properly recognized, the instruction transmitting unit resend the activation command within said predetermined number of polls.

[0092] 本发明实施例提供的阅读器,利用激活命令触发管辖范围内的标签随机产生标签ID回复的间隔时间,通过激活命令对标签的识别进行调整,由于被动标签在产生随机应答间距时需要耗费一定的能量,而在本实施例所提出的方法中,阅读器管辖范围内的标签不必每次进行标签ID回复之后都随机产生应答间距,节省了标签能耗。 [0092] Since the passive transponder tag generates random spacing need embodiment of the invention provides a reader with the activation command triggers the tag within the jurisdiction of random intervals tag ID reply by activating the command identification tag to be adjusted spend some energy, but in this embodiment the proposed method, the label within the scope of the jurisdiction of the reader does not have to respond each time after the tag ID are randomly generated responses pitch, energy saving label.

[0093] 本发明实施例还提供了一种射频信号的识别系统,如图7所示,该系统包括: [0093] Embodiments of the present invention further provides a radio frequency signal recognition system, shown in Figure 7, the system comprising:

[0094]阅读器70,用于向管辖范围的标签发送激活命令,根据管辖范围内的标签回复的标签ID对标签进行识别,若在识别情况满足重置条件的情况下,则重新向管辖范围内的标签发送激活命令; [0094] reader 70 for sending an activation command to the jurisdiction of the label, according to the label reply within the jurisdiction of the tag ID tag to identify, under the circumstances if the recognition reset condition is satisfied, then re-apply to the jurisdiction tags transmit activation command;

[0095] 标签71,用于根据接收到的激活命令,回发标签ID,并根据激活命令随机产生应答间距,根据所述应答间距进行标签ID回发。 [0095] tag 71 for activation according to the received command, postback tag ID, and randomly generated answer spacing according to the activation command label ID postback based on the response distance.

[0096] 本发明实施例提供的射频信号识别系统中,标签71根据阅读器70的激活命令产生标签ID回发的应答间距,以后每次标签ID回发都等待该应答间距进行下一次回发,而不是每次标签ID回发后都随机产生应答间距,避免了在一次激活命令触发应答过程中,标签71多次产生随机数的问题,从而降低了标签71的能耗。 [0096] RF signal recognition system embodiment of the invention provided, the tag reader 71 according to 70 active command generating tag ID postback response spacing after each tag ID postback are waiting for the reply the next pitch postback rather than after each tag ID postback are randomly generated responses pitch, avoiding the activation command triggers a response process, the label 71 times a problem of random numbers, thereby reducing the energy consumption of 71 tags.

[0097] 以上对本发明实施例所提供的一种射频信号识别、应答方法及系统、标签和阅读器进行了详细介绍,对于本领域的一般技术人员,依据本发明实施例的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本发明的限制。 [0097] Although the present invention there is provided a radio frequency signal recognition, response methods and systems, tags and readers embodiment will be described in detail, for ordinary skill in the art, according to an embodiment of the present invention is thinking, in particular embodiments the manner and scope of application are subject to change place, summary, contents of this manual should not be construed as limiting the present invention.

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Classifications
Classification internationaleG06K7/00, G06K19/07
Événements juridiques
DateCodeÉvénementDescription
1 juil. 2009C06Publication
26 août 2009C10Entry into substantive examination
27 mai 2015C14Grant of patent or utility model
8 sept. 2017TR01