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CN101470791B - Radio frequency signal recognition and response method and system, label and reading device - Google Patents

Radio frequency signal recognition and response method and system, label and reading device Download PDF

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CN101470791B
CN101470791B CN 200710125732 CN200710125732A CN101470791B CN 101470791 B CN101470791 B CN 101470791B CN 200710125732 CN200710125732 CN 200710125732 CN 200710125732 A CN200710125732 A CN 200710125732A CN 101470791 B CN101470791 B CN 101470791B
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system
frequency
device
signal
reading
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CN101470791A (en )
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张兴炜
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华为技术有限公司
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Abstract

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 identification signal, method and system response, the tags and readers, to reduce energy consumption during the tag response. 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 transmits to the tag within the jurisdiction of the activation command, the tag receives the activation command identification information in accordance with label reply, according to the pitch and generates a response activation command, or command the machine subsequent tag triggered reply identification information, both by the transponder reply pitch; identification tag reader in accordance with the tag identity information reply within the jurisdiction of the case, if not the correct identification tag within a certain time or polling times, the re-transmission activation command, the recognition process is controlled; in the present invention is an example, each of the activation command for a tag is randomly generating a response are generated randomly response after a pitch spacing, not every postback flag tag information, saving random answer produce energy spacing brought.

Description

射频信号的识别、应答方法及系统,标签和阅读器 A radio frequency identification signal, method and system response, and the tag reader

技术领域 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 communication technologies, and particularly relates to the identification, the transponder method, system and label A radio frequency signals.

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) widely applied. 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 can not only replace the current common bar codes can also be used in warehouses in logistics and warehousing management, identification, transportation, food, medical, animal management, access control security and military industry and other application scenarios, and, RFID can be applied to the environment conditions are particularly bad scenario, so bring more convenience to people's lives.

[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, i.e., the label (tag) and a reader (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 tag, a data carrier system, each tag having a tag that is unique identification information ID. 标签可以附着在目标对象上,以标识目标对象。 Tag may be attached on 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 a read command signal to the tag, receives a response returned from the label, and decoded identification information is then transmitted back to the host decoded, background host for 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。 A method wherein [0004] the prior art is the use of non-terminated unslotted ALOHA multiple tag reading method of anti-collision identification tag identification. 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 sends an activation (wake-up) command to the tag within its jurisdiction, all tags receiving the wake-up command is activated, the reader sends back its own tag ID reader Upon receiving the I a tag ID, the identification of the tag; if not received the tag ID, the description of the identification tag no jurisdiction, identifying the end; if a plurality of received tag ID, the identification continues. 下面介绍在阅读器识别过程中,标签的应答流程: Here recognition process in the reader, the tag 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] 1, tag tagl, tag2 and tag3 after receiving the reader's wake-up command (hatched block shown in FIG. 1), sent back to the reader to the tag ID, tag ID tag postback process, when the length of the tag ID transmitted from the figure the width of the black box represented in a tag identification application scenario, the length of the transmission is generally the same tag ID. 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 FIG. 1, at stage 1, there are three tag wake-up command is received after a postback ID tag, thereafter, each tag generates a random number, the random number generator to obtain a random time interval (response pitch, represented by the length of blank space between each label in FIG. 1 corresponds to black box), the reply wait pitch postback tag ID again; regardless of whether the tag is recognized, after each subsequent postback, Tabs have randomly generated a reply pitch after pitch the answer, once again sent back to the tag ID, and so forth, until the reader sends a termination command so far.

[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 the tags, each tag when the tag ID postback collide, the identification tag reader is not a collision, if the postback tag ID tag does not collide with other tags, the tag 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 Described below in conjunction with FIG 1 the collision tag identification process and the case is identified in stage 1, since each tag ID tags are sent back according to wake-up command, the tag ID of each tag postback communication period coincide completely when full collision (when two tag communication tag ID postback fully overlap period, i.e., when the starting times of the two labels is equal to the response (tsl = ts2) tagl, tag2 and tag3 place in stage I, called two tag collision occurs at the full-time postback; if only the ID portion overlaps, i.e. when the starting time of the condition of two labels reply tsl-tID <t s2 <tsl + tID, and ts2 # t sl ( duration when the tag ID transmitted tID), called colliding two tags occurs at the time postback.), tagl, tag2 and tag3 after completion of transmission its own tag ID, both randomly generates a response spacing, in FIG. in. 1, the shortest distance tag3 response, tag2 the longest response time, response time TAGL centrally formed responsiveness to stage 2: in stage 2, the back tag2 postback tag ID and the communication time period TAGL of tag3 ID tag communication period issued no 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。 Any overlap, when tag2 can be successfully identified, and TAGL and tag3 postback ID tag communication period partially overlap, i.e. TAGL tag3 occurred and the collision portion postback, and tag3 TAGL in the postback It 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。 From the above description, in connection with Figure 1 that, 3, tagl, tag2 and tag3 twenty-two collision portion stage; 4, tagl tag2 and tag3 collide with each portion of the stage, tag2 and tag3 full collision occurs.

[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 the prior art practice and study based, the inventor found the following problems in 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] In the prior art, each time when the tag reader to the tag ID sent back, needs to trigger a random number generator generates random numbers according to the time after reading the random number generated randomly generated pitch response, waits for a reply pitch is the number of times the tag ID postback operation, this time in turn triggers the random number generator generates a random number, and only when all of the tags are being identified, the tag transmits the tag ID to the stopped reader, the tag generates a random number is more , and each module calls a random number generator generates a random number will consume some energy label, for which no use to termination of unslotted ALOHA multi anti-collision identification tag reader in a passive tag, the energy consumption of the tag high.

发明内容 SUMMARY

[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 provides a radio frequency identification signal, method and system response, the tags and readers, to reduce energy consumption during transponder tag of the present invention.

[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 a radio frequency response signal, comprising:

[0011] 接收激活命令; [0011] receiving an 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] The back send the activation command tag identification information, and tag identification information to generate a random response to postback pitch;

[0013] 根据所述应答间距进行标签标识信息回发。 [0013] The tag identification information for the reply sent back spacing.

[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 further provides a method for identifying a radio frequency signal, 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] transmitted to the tag within the jurisdiction of the activation command, is used to trigger the activation command is received the command tag postback tag identification information, and randomly generates a response pitch postback tag identification information, the transponder according to the pitch tag identification 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] received within the scope of the jurisdiction of the tab postback tag identification information, 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 identification satisfied, then sends an activation command to re-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] pitch response generating unit, a receiving unit for receiving the activation command, generating a random 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] transmitting unit for activating the unit receives a command based on the received flag information postback tag; for tag identification information based on the response sent back spacing.

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

[0023] 发送单元,用于发送控制命令; [0023] transmitting means for transmitting the control command;

[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 is activated postback tag, and the tag identification of the received tag identification information; and the tag is activated to receive the activation command sent by the transmission unit s Mark;

[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 case where the identification unit the identification reset condition is satisfied, the control unit re-transmits the activation command transmission.

[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 used to send the activation command to the range of jurisdiction tag, the identification tag of the jurisdiction under the label reply tag ID, in the case when the reset condition is satisfied in the case of identification, it is within the jurisdiction of the re the tag transmits 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] label, an activation command according to the received tag ID is sent back, and randomly generate activation command response according to the pitch, a tag ID based on the response sent back spacing.

[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] It can be seen above technical solutions, embodiments of the present invention for generating a label reply and send back pitch tag identification information based on the reader's activation command, an activation command for each randomly generated only once for a tag response is spacing, spacing are randomly generated a response, saving energy randomly generated responses pitch brought back not every postback label flag information.

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 transponder schematic process;

[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 of a method embodiment of a radio frequency 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 present invention carrying a radio frequency tag schematic embodiment of a crash signal in response procedure;

[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 of a radio frequency signal recognition method embodiment 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 an example embodiment of the present invention is not intended to provide a tag;

[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;

[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 a radio frequency signal identification system provided by the invention.

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。 Embodiment [0037] The present invention provides a method of radio frequency response signal, it is possible to reduce the energy consumption during the tag response.

[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 procedure in an embodiment of the present invention, the tag generates a random number according to the trigger wake-up command, i.e., a random number is generated only once, using the random number generated in response pitch command received a wake-up, after each postback after the tag ID, waits for the response are pitch for 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] Please refer to FIG. 2, the RF signal is a flowchart of a method embodiment of the present invention, the response, 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, receiving an activation command tag reader; step 202, based on the command tag identification information sent back to the activation, and randomly generate a response according to the activation command pitch;

[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] Refer to FIG. 3 Stage 1, the tag reader receiver wake-up command, the tag sends back to the reader ID, at this stage, after the rake-up tag receives command transmits its tag ID, may be considered receiving the wake-up command while the tag transmits its tag ID, tag ID when the transfer of each label looks the same time, the case of phase I 3 as the response as shown in FIG.

[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 length is equal transmission embodiment of the present invention is not limited to the tag ID by reading this article, it should be understood that length is equal not affect the technical problem embodiments of the present invention is provided to solve when the tag ID transmitted , i.e. in an embodiment of the present invention, it is assumed that the tag ID of each transmission looks like without loss of generality the 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] For ease of description, hereinafter looks like the label to each tag ID is transmitted as an 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, while each tag transmits the tag ID, tag ID, and send back a communication period completely overlaps stage, at this stage, tagl, tag2 and tag3 full collision occurs. 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, postback each tag ID tag are accompanied by a random number generation, the pitch response tag according to the generated random number is determined, while in the embodiment of the present invention, each tag based on the received wake-up command generates a random number, generates a corresponding response pitch random number, and storing the prepared reply to invoke pitch until receiving a new wake-up command to re-generate a new response refresh until the original pitch and the pitch response. 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 random number according to the response pitch wake-up command is generated corresponding to Tl; tag2 response pitch random number generated according to wake-up command corresponding to T2; tag3 random number generated according to wake-up command response corresponding pitch T3.

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

[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 ID in a subsequent postback tag, each tag ID sent back to complete, waiting for a response in accordance with the pitch of the label producing wake-up command, a tag ID and then sent back again. 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 is sent back to tag ID, respectively, again after waiting for a randomly generated response pitch Tl, T2 and T3 sent back to tag ID, thereafter, each time back TAGL a tag ID is issued after the postback tag ID, Tl are waiting for responses pitch. tag2和tag3的情况类似。 A 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] As shown in FIG, 2, tagl, tag2 and tag3 twenty-two colliding occurs at stage 3, not be identified; 3, TAGL and tag2 and tag3 are colliding, not be identified at the stage; stage 4 , TAGL generating portion and tag3 collision can not be identified, at this stage Tag2 response (i.e. postback tag ID) process, no collision with other tags, the reader may 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。 As long as the response can be seen that the pitch is not exactly the same randomly generated (full collision), because the response to each label spacing between each cumulative difference after a period of time can be identified individually.

[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 a random number is generated within the passive tag is triggered by a wake-up command instead of the ID tag on each postback be accompanied by a random number generation, it is possible to largely reduce energy consumption label.

[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 the anti-collision ALOHA slot identification method is not without termination, the state of the tag is a passive transponder, the reader receives the tag command, and then responds in accordance with the operation command of the reader, the operation simple tag, the reader and communication between the simple, identification tag reader depends on command, this in mind, the present invention is effective to control the radio frequency signal response of the proposed method of Example tag responds embodiment, an embodiment of the present invention, a radio frequency identification signal the method, as shown in FIG 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] Step 401, the reader activation command to the tag within the 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 to identify the start, the first activation command within the jurisdiction of the tag, the tag according to the jurisdiction activation command, the tag ID sent back to the reader, and randomly generate activation command response according to the pitch, thereafter, are spacing the transponder responds by randomly generated, until it receives new commands 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] Upon receiving a tag ID postback tag, a tag ID that is sent back to the process does not, the tag reader identifies the collision with other postback tag ID; when a plurality of tags received postback ID tag, i.e., when a collision occurs in the plurality of tags postback tag ID, 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, when the reader fails to correctly identify the tag within a predetermined time or a predetermined number of polls, then sends an activation command to re-label the jurisdiction;

[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 tag, the minimum time length is an integral multiple of the unit time t and the random response tag ID transmitted, the predetermined time may be determined that the long distance and response transmission in accordance with the tag ID, tag are analyzed as two a, where B is the response to the selection of the predetermined time as 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 transmission of a tag ID of length k X t (k is a natural number), and two labels A, B first generates a random after the first ID tag transponder reply time spacing occurs (k-1) Xt time overlap, the distance a is assumed response NXt (N is a natural number), response to the pitch B (N + l) X t, from the frequency response considerations, a and B, respectively, and then through the secondary response is not k-Ι collision; from the viewpoint of time, reader sends an activation command [(k-1) Xk + kXN] after Xt, can be correctly identified A, sending an 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] A and B in the first tag ID is generated for the first time the reply RRT spacing in time overlap occurs if less than (k-1) Xt, only require less tag ID number and replies less time can be no collision, be correctly identified, so that the reader can be selected after sending an activation command [(k-1) Xk + kXN] Xt, if not correctly recognize the tag, then the jurisdiction to re tag transmits an activation command; Similarly, if within a predetermined period of time after a proper identification tags, did not recognize the tag, the reader may resend the command to activate the tag within its jurisdiction, to adjust the spacing of the 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 may select a predetermined time by the above rules custom, may also be by default, the predetermined time is set to reflect the desired label recognition errors in the control level, i.e. no right identification tag within a predetermined time, is considered according to the label producing inappropriate activation command response pitch (pitch error response), re-send the activation command, so that the label pitch regenerate response to adjust the response procedure according to a preset time, the control level of errors.

[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] Alternatively, the retransmission may be controlled according to the wake-up command to a predetermined number of polls. 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 is polling times reader definition, the length of time for each polling is dynamic, and can change the size with the increase or decrease of the number of tags, and sufficient 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 polling, in four stages, the tag reader receives a tag ID sent back continuously. 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 the number of polls within a tag is not identified correctly, a retransmission can activation command, a 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。 Therefore, a predetermined number of times may be set to control retransmission of the polling command, a response to the adjustment process, in order to facilitate the identification tag.

[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] Also, the predetermined number of polls 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] The radio frequency signal recognition method provided by the embodiments of the present invention, the use of the activation command triggers tag within the jurisdiction of the random interval tag ID response, and adjust the identification tag by activating the command, because the passive tag generates a random response pitch when the need to call a random number generator, which will cost some energy, but in the present embodiment the method proposed in the embodiment, the range of the tag reader jurisdiction are not necessarily performed each time after the random spacing transponder reply tag ID, tag saving 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 FIG. 5, the tag comprising:

[0063] 接收单元501,用于接收控制命令; [0063] The receiving unit 501 for receiving a 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] The receiving unit 501 receives a control command of the reader, the control command comprises an active command, termination 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] pitch response generating unit 502, for activation command received by the receiving unit 501 according to the random spacing an Acknowledge;

[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] Each receiving unit receives the time tag activation command, a response to the pitch generation unit 502 randomly generates a response pitch.

[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] The transmitting unit 503, according to an activation command received by the receiving unit, the tag ID postback; for tag identification information based on the response sent back spacing.

[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] The transmission unit 503 receives an activation command to the reader unit 501 according to the received transmission, the transmission unit 10 postback label, i.e. the label 503 is started by the activation command sent back to the reader the tag ID, and each tag after postback end ID, waits for the reply pitch generation unit 502 according to the pitch response randomly generated activation command, a tag ID back to be issued.

[0069] 进一步地,上述的发送单元503可包括: [0069] Further, the transmitting 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] The triggering unit for receiving an activation command to receiving unit 501 according to the trigger unit performs the postback ID tag, and after completion of the execution unit postback tag ID, waits for the response generating unit 502 pitch pitch response generated, triggering the execution unit tag ID sent back again.

[0072] 更进一步,上述的触发单元可包括: [0072] Further, the above-described trigger unit may comprise:

[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] The enabling unit configured to, after the receiving unit 501 receives the activation command, an enable signal is active, after the receiving unit receives the termination command, 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] The timing unit for in case of the active enable signal, the timing function is turned on, in a case where the enable signal is inactive, the closing timing function, a timer function is: in the execution unit back after the hair tag ID, 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] The instruction unit, for activation command received by the receiving unit 501, the instruction execution unit when the tag ID back or in response to the timekeeping unit pitch the response generating unit 502 generates the pitch , the instruction 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 tag wake-up command is triggered by generating random numbers, rather than each time the tag ID to be sent back along a random number generation, it is possible to reduce energy consumption largely tag .

[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 FIG. 6, the reader comprising:

[0078] 发送单元601,用于发送控制命令; [0078] The transmitting unit 601 for transmitting control command;

[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。 The tag ID back to the process according to an embodiment of the present invention [0079] In the tag identification process, the transmission unit 601 transmits rake-up command to the tag within its jurisdiction, to activate the received tag wake-up command is performed foregoing; the jurisdiction tags within range 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 activated tag postback ID tag, and the tag identification tag according to the received ID; the label is activated to receive a transmission unit 601 to the wake- transmitted tags up orders;

[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, a recognition in the case where the reset condition 602 satisfies the identification unit controls the transmission unit 601 transmits an activation command again.

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

[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] The setting unit 604 for determining the predetermined time based on the time tag identification information transmission gap length and tag response, 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] determination means for determining whether a predetermined time within the label is correctly identified;

[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 judging unit judges in the case where the tag is not recognized correctly, the command transmitting unit transmits the activation command again within said predetermined time.

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

[0088] 设定单元604,用于设定预定的轮询次数; [0088] The 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 includes:

[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] determination means for determining a predetermined number of times within the polling whether a label is correctly identified;

[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] The reset unit, for the case where the determining unit determines that the tag is not recognized correctly, the command transmitting unit transmits the activation command again 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] The embodiment of the present invention, the reader provided, the use of the activation command triggers tag within the jurisdiction of the random interval tag ID response, and adjust the identification tag by activating the command, because the passive tag generates required random response pitch consume some energy, but in the present embodiment the method proposed in the embodiment, the range of the tag reader jurisdiction are not necessarily performed each time after the random spacing transponder reply tag ID, tag saves energy.

[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 an identification system for radio frequency signals, 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] The reader 70 is configured to send an activate command to the range of jurisdiction tag, the identification tag of the jurisdiction under the label reply tag ID, in the case when the reset condition is satisfied in the case of identification, the re jurisdiction tags within the transmission 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] The tab 71, according to the received activation command, send back a tag ID, and randomly generate activation command response according to the pitch, a tag ID based on the response sent back spacing.

[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 according to an embodiment of the present invention, the tag reader 71 in accordance with an activation command 70 generates a response tag ID postback pitch after each tag ID are sent back to wait for this response postback pitch for , rather than randomly generated each time the tag ID to send an acknowledgment back to the pitch, to avoid activation command triggers a response in the process, the tag 71 repeatedly problem of random numbers, thereby reducing the energy consumption of the tag 71.

[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。 Described in detail, a radio frequency signal identification, the response method and system tags and readers embodiment provided [0097] The above embodiments of the present invention to those of ordinary skill in the art, according to the invention The idea of ​​an embodiment, in a specific embodiment the manner and application scope of the change, Therefore, the specification shall not be construed as limiting the present invention.

Claims (5)

  1. 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。 1. A radio frequency response signal, characterized in that, the method comprising: receiving an activation command; postback according to the activation command tag identification information, and generates a random number, generate tag identification information based on the random number postback response spacing, pitch and storing the answer any invocation; postback tag identification information based on the response of the pitch, the finished back after the label identification information, the response wait pitch, then sent back again to the tag identification information until receiving the termination command or another active command.
  2. 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。 A label, wherein said label comprises: receiving means for receiving a control command; pitch response generation unit for receiving an activation command when the received unit, pitch randomly generated response, and storing the response to prepare a pitch call; transmitting means for initiating postback identification tag according to the activation command, and after the end of each tag identifying postback, the response wait pitch for the next tag ID postback.
  3. 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, wherein said transmitting unit comprises: an execution unit configured to send back to the tag identification information; triggering means for activating the means for receiving commands according to the reception of said trigger postback execution unit flag tag information; and send a response back to the end of the spacing element tag identification information, waiting for the response generating unit generates the pitch in the execution triggering the execution unit tag identification information again sent back.
  4. 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, wherein said trigger means comprises: enabling means, configured to, after the receiving unit receives the activation command, an enable signal is valid, the receiving unit receives after the termination command, the enable signal is inactive; timing unit for in case of the active enable signal, the timing function is turned on, in a case where the enable signal is inactive, the closing timing function, the timing function: in the execution unit after postback tag identification information, restarts the timer; instruction unit, according to an activation command received by the receiving unit, tag identification information unit the instruction execution postback or, when the timekeeping unit in response to the pitch of the pitch generation unit generating a response, the instruction execution unit flag label message are sent back.
  5. 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。 A radio frequency signal identification system, characterized in that, the system comprising: a reader, configured to send an activate command to the range of jurisdiction tag, the identification tag of the jurisdiction under the label reply tag ID, if the identification a case where the reset condition satisfied, then sends an activation command to re-label within the jurisdiction; tag, generating a random number according to an activation command, i.e., the first activation command received random number generated only once, using the random number generation response pitch ,, and storing the pitch to prepare a response call, after each tag identification information is sent back, this response are waiting spacing, postback operation before the next tag identification information until receiving the termination command or another active command once.
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