CN108985125A - 一种超高频rfid标签的读取方法 - Google Patents

一种超高频rfid标签的读取方法 Download PDF

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CN108985125A
CN108985125A CN201810867413.8A CN201810867413A CN108985125A CN 108985125 A CN108985125 A CN 108985125A CN 201810867413 A CN201810867413 A CN 201810867413A CN 108985125 A CN108985125 A CN 108985125A
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rfid
scanning
read
scanned object
ultrahigh frequency
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CN108985125B (zh
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俞立群
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Wuxi Hengye Software Technology Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10366—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications
    • G06K7/10415—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being fixed in its position, such as an access control device for reading wireless access cards, or a wireless ATM
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
    • G06K7/10346—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers the antenna being of the far field type, e.g. HF types or dipoles
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10118—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the sensing being preceded by at least one preliminary step
    • G06K7/10128—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the sensing being preceded by at least one preliminary step the step consisting of detection of the presence of one or more record carriers in the vicinity of the interrogation device
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
    • G06K7/10356—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers using a plurality of antennas, e.g. configurations including means to resolve interference between the plurality of antennas
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10366—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications
    • G06K7/10415—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being fixed in its position, such as an access control device for reading wireless access cards, or a wireless ATM
    • G06K7/10425—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being fixed in its position, such as an access control device for reading wireless access cards, or a wireless ATM the interrogation device being arranged for interrogation of record carriers passing by the interrogation device
    • G06K7/10435—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being fixed in its position, such as an access control device for reading wireless access cards, or a wireless ATM the interrogation device being arranged for interrogation of record carriers passing by the interrogation device the interrogation device being positioned close to a conveyor belt or the like on which moving record carriers are passing
    • G06K7/10445—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being fixed in its position, such as an access control device for reading wireless access cards, or a wireless ATM the interrogation device being arranged for interrogation of record carriers passing by the interrogation device the interrogation device being positioned close to a conveyor belt or the like on which moving record carriers are passing the record carriers being fixed to further objects, e.g. RFIDs fixed to packages, luggage, mail-pieces or work-pieces transported on a conveyor belt

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Abstract

一种超高频RFID标签的读取方法，其特征在于超高频RFID扫描系统包括超高频RFID读写器1和天线组，天线2分布在被扫描物体4的四周，被扫描物体4内有RFID标签，超高频RFID扫描系统对被扫描物体4进行连续扫描，直至没有新增数据添加到扫描集合A内，则开始计数，如果连续N个扫描周期没有新增数据添加到扫描集合A内，则认为该超高频RFID扫描系统已经读全了被扫描物体4内的RFID标签。优点：本读取方法克服了设定“读取时间”和设定“读取次数”都不能确定超高频RFID扫描系统是否确实读全了所有RFID标签的数量，且读取时间和读取次数随着RFID标签的数量多少和RFID标签读取的难易程度进行动态调整，既保证了读取数量的准确性，又提高了读取效率。

Description

一种超高频RFID标签的读取方法
技术领域
本发明涉及的是一种超高频RFID标签的读取方法，属于射频识别技术领域。
背景技术
超高频RFID标签读取在供应链和流通领域使用频繁，例如需要对一个包装箱内的RFID标签进行扫描，以确定包装箱内有哪些产品。读取结果的多少、以及读取效率极其重要。
现有判读超高频RFID标签是否读取完全的方法有两种，分别是设定读取时间和设定读取次数。
对于设定读取时间，例如设定读取时间为3秒、5秒或10秒，天线不停地读取RFID标签，时间一到就算读全了标签。该方案的弊端是每个包装箱内的RFID标签数量有多有少，标签多，读取的时间就长，标签少，读取的时间就短。如果设置成同一时间，则标签多的包装箱读取时间不足，就可能读不全，标签少的包装箱却浪费读取时间。
对于设定读取次数，系统设定循环读取次数的算法后，就算读全了所有标签。但是标签数量多的情况下，在设定读取次数的情况下，仍然不能确定是否读全了全部标签。例如，专利申请号为201610604749.6的专利文献，详见该文献的权利要求13。
发明内容
本发明创造解决的是如何确定RFID标签确实已经读完全的技术问题。
本发明创造的技术方案：一种超高频RFID标签的读取方法，其特征在于超高频RFID扫描系统包括超高频RFID读写器1和天线组，天线组包括至少两个天线2，天线2分布在被扫描物体4的四周，被扫描物体4内有RFID标签，天线2分别与超高频RFID读写器1通过馈线连接，设置被扫描物体4内RFID标签数量的扫描集合A，将每个扫描周期新增数据添加到扫描集合A内，超高频RFID扫描系统对被扫描物体4进行连续扫描，直至没有新增数据添加到扫描集合A内，则开始计数，如果连续N个扫描周期没有新增数据添加到扫描集合A内，则认为该超高频RFID扫描系统已经读全了被扫描物体4内的RFID标签；如果在连续的N个扫描周期内的任何一次有新增数据添加到扫描集合A内，则重新开始计数，直到连续N个扫描周期没有新增数据添加到扫描集合A内，则认为该超高频RFID扫描系统已经读全了被扫描物体4内的RFID标签。
优选地，所述连续扫描周期的数量N根据被扫描物体4内RFID标签数量或者标签读取的难易程度进行调整。
优选地，所述超高频RFID扫描系统在进行扫描前，对连续扫描周期的数量N进行预设，连续扫描周期的数量N取值范围为3至20的自然数。
优选地，所述天线2安装在通道机3内，被扫描物体4安装在输送线5上，输送线5穿过通道机3，该超高频RFID标签的读取方法嵌入在所述超高频RFID扫描系统内。
优选地，所述输送线5上安装有检测装置，检测装置对被扫描物体4内RFID标签的数量进行预估，并将预估结果反馈给超高频RFID读写器1，超高频RFID读写器1根据预估结果选择合适的连续扫描周期的数量N。
本发明创造的优点：本读取方法克服了设定“读取时间”和设定“读取次数”都不能确定超高频RFID扫描系统是否确实读全了所有RFID标签的数量，本读取方法的读取时间和读取次数随着RFID标签的数量多少和RFID标签读取的难易程度进行动态调整，既保证了读取数量的准确性，又提高了读取效率。
附图说明
图1是实施例1的示意图。
图中，1是超高频RFID读写器，2是天线，3是通道机，4是被扫描物体，5是输送线。
具体实施方式
一种超高频RFID标签的读取方法，其特征在于超高频RFID扫描系统包括超高频RFID读写器1和天线组，天线组包括至少两个天线2，天线2分布在被扫描物体4的四周，被扫描物体4内有RFID标签，天线2分别与超高频RFID读写器1通过馈线连接，设置被扫描物体4内RFID标签数量的扫描集合A，将每个扫描周期新增数据添加到扫描集合A内，超高频RFID扫描系统对被扫描物体4进行连续扫描，直至没有新增数据添加到扫描集合A内，则开始计数，如果连续N个扫描周期没有新增数据添加到扫描集合A内，则认为该超高频RFID扫描系统已经读全了被扫描物体4内的RFID标签；如果在连续的N个扫描周期内的任何一次有新增数据添加到扫描集合A内，则重新开始计数，直到连续N个扫描周期没有新增数据添加到扫描集合A内，则认为该超高频RFID扫描系统已经读全了被扫描物体4内的RFID标签。
优选地，所述连续扫描周期的数量N根据被扫描物体4内RFID标签数量或者标签读取的难易程度进行调整。
优选地，所述超高频RFID扫描系统在进行扫描前，对连续扫描周期的数量N进行预设，连续扫描周期的数量N取值范围为3至20的自然数。
优选地，所述天线2安装在通道机3内，被扫描物体4安装在输送线5上，输送线5穿过通道机3，该超高频RFID标签的读取方法嵌入在所述超高频RFID扫描系统内。
优选地，所述输送线5上安装有检测装置，检测装置对被扫描物体4内RFID标签的数量进行预估，并将预估结果反馈给超高频RFID读写器1，超高频RFID读写器1根据预估结果选择合适的连续扫描周期的数量N。
实施例1
下面以通道机对输送线上的物品进行扫描为例进行说明。
如图1所示，通道机3安装在输送线5上，通道机3内安装有超高频RFID扫描系统，超高频RFID扫描系统包括超高频RFID读写器1和天线组，超高频RFID读写器1安装在通道机3上，天线2分别与超高频RFID读写器1馈线连接，被扫描物体4为纸盒，每个纸盒内放置数量不一的产品（例如服装，每个服装上安装有RFID标签）。
设天线组轮巡读取一次RFID标签为一个超高频RFID读写器扫描周期（简称：扫描周期）。
纸盒在通过通道机3前，超高频RFID扫描系统对连续扫描周期N的数值进行预设，也可以根据检测装置（如称重装置）预先对纸盒内RFID标签的数量进行预估，选择合适的连续扫描周期N。
纸盒在通过通道机3时，纸盒做短暂的停留。
设置纸盒内RFID标签数量的扫描集合A，将每个扫描周期新增数据添加到扫描集合A内，超高频RFID扫描系统对纸盒进行连续扫描，直至没有新增数据添加到扫描集合A内，则开始计数，如果连续N个扫描周期没有新增数据添加到扫描集合A内，则认为该超高频RFID扫描系统已经读全了纸盒内的RFID标签；如果在连续的N个扫描周期内的任何一次有新增数据添加到扫描集合A内，则重新开始计数，直到连续N个扫描周期没有新增数据添加到扫描集合A内，则认为该超高频RFID扫描系统已经读全了纸盒内的RFID标签。
其中连续扫描周期的数量N根据被扫描物体4内RFID标签数量或者标签读取的难易程度进行调整。
完成扫描后，输送线将纸盒运走。

Claims (5)

1.一种超高频RFID标签的读取方法，其特征在于超高频RFID扫描系统包括超高频RFID读写器（1）和天线组，天线组包括至少两个天线（2），天线（2）分布在被扫描物体（4）的四周，被扫描物体（4）内有RFID标签，天线（2）分别与超高频RFID读写器（1）通过馈线连接，设置被扫描物体（4）内RFID标签数量的扫描集合A，将每个扫描周期新增数据添加到扫描集合A内，超高频RFID扫描系统对被扫描物体（4）进行连续扫描，直至没有新增数据添加到扫描集合A内，则开始计数，如果连续N个扫描周期没有新增数据添加到扫描集合A内，则认为该超高频RFID扫描系统已经读全了被扫描物体（4）内的RFID标签；如果在连续的N个扫描周期内的任何一次有新增数据添加到扫描集合A内，则重新开始计数，直到连续N个扫描周期没有新增数据添加到扫描集合A内，则认为该超高频RFID扫描系统已经读全了被扫描物体（4）内的RFID标签。
2.根据权利要求1所述的一种超高频RFID标签的读取方法，其特征在于所述连续扫描周期的数量N根据被扫描物体（4）内RFID标签数量或者标签读取的难易程度进行调整。
3.根据权利要求1所述的一种超高频RFID标签的读取方法，其特征在于所述超高频RFID扫描系统在进行扫描前，对连续扫描周期的数量N进行预设，连续扫描周期的数量N取值范围为3至20的自然数。
4.根据权利要求1所述的一种超高频RFID标签的读取方法，其特征在于所述天线（2）安装在通道机（3）内，被扫描物体（4）安装在输送线（5）上，输送线（5）穿过通道机（3），该超高频RFID标签的读取方法嵌入在所述超高频RFID扫描系统内。
5.根据权利要求4所述的一种超高频RFID标签的读取方法，其特征在于所述输送线（5）上安装有检测装置，检测装置对被扫描物体（4）内RFID标签的数量进行预估，并将预估结果反馈给超高频RFID读写器（1），超高频RFID读写器（1）根据预估结果选择合适的连续扫描周期的数量N。
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Application Number Priority Date Filing Date Title
CN201810867413.8A CN108985125B (zh) 2018-08-02 2018-08-02 一种超高频rfid标签的读取方法
JP2021529503A JP7164905B2 (ja) 2018-08-02 2019-07-22 走査対象内の超高周波ｒｆｉｄタブの読み取り方法
EP19844212.1A EP3832522B1 (en) 2018-08-02 2019-07-22 Method for reading ultra high frequency rfid tag
PCT/CN2019/097001 WO2020024823A1 (zh) 2018-08-02 2019-07-22 一种超高频rfid标签的读取方法
PL19844212.1T PL3832522T3 (pl) 2018-08-02 2019-07-22 Sposób odczytywania etykiety rfid o ultrawysokiej częstotliwości
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