CN209401053U - RFID chip, RFID electronic label, commodity - Google Patents

Abstract

Translated fromChinese

本实用新型揭示了一种RFID芯片、RFID电子标签、商品，所述RFID芯片包括：检测电路、存储单元、第一连接点、第二连接点及改写电路；所述检测电路分别连接第一连接点、第二连接点，检测第一连接点、第二连接点两端的电压或电流，并生成反馈信号；所述检测电路连接改写电路，所述检测电路用以将生成的反馈信号输送至改写电路；所述改写电路连接存储单元，所述改写电路用以在检测电路输送的反馈信号符合设定条件时，向存储单元进行写操作，写入开启记录信息。本实用新型可监测商品是否被开启过，能有效避免RFID电子标签被回收利用。

The utility model discloses an RFID chip, an RFID electronic label and a commodity. The RFID chip comprises: a detection circuit, a storage unit, a first connection point, a second connection point and a rewriting circuit; the detection circuit is respectively connected to the first connection point and the second connection point, detect the voltage or current at both ends of the first connection point and the second connection point, and generate a feedback signal; the detection circuit is connected to the rewriting circuit, and the detection circuit is used to transmit the generated feedback signal to the rewriting a circuit; the rewriting circuit is connected to the storage unit, and the rewriting circuit is used to perform a write operation to the storage unit when the feedback signal sent by the detection circuit meets the set condition, and write the opening recording information. The utility model can monitor whether the commodity has been opened, and can effectively prevent the RFID electronic label from being recycled.

Description

Translated fromChinese

RFID芯片、RFID电子标签、商品RFID chip, RFID electronic label, commodity

技术领域technical field

本实用新型属于RFID电子标签技术领域，涉及一种RFID电子标签，尤其涉及一种RFID电子标签及其RFID芯片，本实用新型还涉及一种包括上述RFID电子标签的商品。The utility model belongs to the technical field of RFID electronic labels, relates to an RFID electronic label, in particular to an RFID electronic label and an RFID chip thereof, and also relates to a commodity comprising the above RFID electronic label.

背景技术Background technique

无线射频识别(简称RFID)技术通过射频信号自动识别目标对象并获取相关数据，识别工作无需人工干扰，可工作于各种环境，同时可识别多个标签，操作快捷方便。2004年后，RFID技术得到蓬勃的发展，在仓储物流、产品防伪、产品流通及产品维护追踪等领域有着广泛的应用潜力。在产品防伪的应用上，RFID以其安全、高效、快捷、储存容量大、储存信息更改自如等特点被称为新一代的“电子守护神”。Radio frequency identification (RFID for short) technology automatically identifies target objects and obtains relevant data through radio frequency signals. The identification work does not require manual interference, and can work in various environments. It can identify multiple tags at the same time, and the operation is fast and convenient. After 2004, RFID technology has developed vigorously and has wide application potential in the fields of warehousing and logistics, product anti-counterfeiting, product circulation and product maintenance and tracking. In the application of product anti-counterfeiting, RFID is known as a new generation of "electronic patron saint" due to its safety, efficiency, speed, large storage capacity, and freedom to change stored information.

同时，无线射频识别技术由于其芯片的UID码全球唯一,信息稳定，仿制成本极高，可存储大量信息,并可简单的进行读写,可使消费者通过商家提供的专用识别装置方便的识别商品的身份，并可以用来实现商品流通中的全程跟踪。At the same time, because the UID code of the RFID chip is unique in the world, the information is stable, and the cost of imitation is extremely high, it can store a large amount of information, and can be easily read and written, allowing consumers to easily identify through the special identification device provided by the merchant. The identity of the commodity can be used to track the whole process of commodity circulation.

目前RFID电子标签已广泛应用于各类商品的信息溯源及防伪保真等，一方面，RFID芯片内保存有唯一的真实的产品信息，对不法分子而言具有回收利用价值；另一方面商品的物流、销售环节，都可能存在非授权主体擅自开启包装的情况，其动机可能多样化，例如盗窃信息或财物、盗窃标签、置换内容等；现有的RFID标签无法进行很好地识别并记录。At present, RFID electronic tags have been widely used in the information traceability and anti-counterfeiting fidelity of various commodities. On the one hand, the RFID chip stores the only real product information, which has recycling value for criminals; In logistics and sales, there may be situations in which unauthorized subjects open the packaging without authorization, and the motives may be diverse, such as theft of information or property, theft of labels, replacement of content, etc. The existing RFID tags cannot be well identified and recorded.

有鉴于此，如今迫切需要设计一种新的RFID标签，以便克服现有RFID标签存在的上述缺陷。In view of this, there is an urgent need to design a new RFID tag in order to overcome the above-mentioned shortcomings of the existing RFID tags.

实用新型内容Utility model content

本实用新型提供一种RFID芯片、RFID电子标签，可监测商品是否被开启过，能有效避免RFID电子标签被回收利用。The utility model provides an RFID chip and an RFID electronic label, which can monitor whether a commodity has been opened, and can effectively prevent the RFID electronic label from being recycled.

本实用新型还提供一种利用上述RFID电子标签的商品，可以监测商品是否被开启过，能有效避免商品的RFID电子标签被回收利用。The utility model also provides a commodity using the above-mentioned RFID electronic label, which can monitor whether the commodity has been opened, and can effectively avoid the RFID electronic label of the commodity from being recycled.

为解决上述技术问题，根据本实用新型的一个方面，采用如下技术方案：In order to solve the above-mentioned technical problems, according to one aspect of the present utility model, the following technical solutions are adopted:

一种RFID芯片，所述RFID芯片包括：检测电路、存储单元、第一连接点、第二连接点及改写电路；所述检测电路连接改写电路，所述改写电路连接存储单元；An RFID chip comprising: a detection circuit, a storage unit, a first connection point, a second connection point and a rewriting circuit; the detection circuit is connected to a rewriting circuit, and the rewriting circuit is connected to the storage unit;

所述检测电路分别连接第一连接点、第二连接点，检测第一连接点、第二连接点两端的电压或电流，生成反馈信号，并将生成的反馈信号发送至改写电路；The detection circuit is respectively connected to the first connection point and the second connection point, detects the voltage or current at both ends of the first connection point and the second connection point, generates a feedback signal, and sends the generated feedback signal to the rewriting circuit;

所述改写电路用以在检测电路输送设定反馈信号时向存储单元进行写操作，写入开启记录信息。The rewriting circuit is used to perform a writing operation to the storage unit when the detection circuit transmits the setting feedback signal, and write the opening recording information.

作为本实用新型的一种实施方式，所述检测电路包括第一比较器；所述第一比较器的反相输入端连接电压VL；在第一连接点、第二连接点之间为通路的状态下，第一比较器的正相输入端能接收到电压VH信号，第一比较器的输出端输送电压VH信号至改写电路；在第一连接点、第二连接点之间断开的状态下，第一比较器的正相输入端无法接收到电压VH信号，在该状态下，第一比较器的输出端输送电压VL信号至改写电路。As an embodiment of the present invention, the detection circuit includes a first comparator; an inverting input terminal of the first comparator is connected to a voltage VL; a channel is connected between the first connection point and the second connection point. In the state, the non-inverting input terminal of the first comparator can receive the voltage VH signal, and the output terminal of the first comparator sends the voltage VH signal to the rewriting circuit; in the state of disconnection between the first connection point and the second connection point , the non-inverting input terminal of the first comparator cannot receive the voltage VH signal, and in this state, the output terminal of the first comparator sends the voltage VL signal to the rewriting circuit.

作为本实用新型的一种实施方式，所述改写电路包括第二比较器；所述第二比较器的正相输入端连接电压VH，第二比较器的反相输入端连接第一比较器的输出信号；As an embodiment of the present invention, the rewriting circuit includes a second comparator; the non-inverting input terminal of the second comparator is connected to the voltage VH, and the inverting input terminal of the second comparator is connected to the voltage VH of the first comparator. output signal;

在第一比较器的输出信号为电压VH信号的状态下，第二比较器的输出端输出正常信号；When the output signal of the first comparator is the voltage VH signal, the output end of the second comparator outputs a normal signal;

在第一比较器的输出信号为电压VL信号的状态下，第二比较器的输出端输出开启记录信息写入信号，向存储单元写入商品被开启记录信息。When the output signal of the first comparator is the voltage VL signal, the output end of the second comparator outputs the write-on recording information signal to write the record-on-commodity information into the storage unit.

作为本实用新型的一种实施方式，所述检测电路连接第二连接点，改写电路连接第一连接点；在第一连接点连接第二连接点的状态下，检测电路、改写电路、第一连接点、第二连接点形成回路。As an embodiment of the present invention, the detection circuit is connected to the second connection point, and the rewriting circuit is connected to the first connection point; in the state where the first connection point is connected to the second connection point, the detection circuit, the rewriting circuit, the first connection point The connection point and the second connection point form a loop.

作为本实用新型的一种实施方式，所述RFID芯片还包括射频模拟前端、数字逻辑单元；所述射频模拟前端用以完成电磁场的能量转换；所述数字逻辑单元用以完成既定工作逻辑；As an embodiment of the present invention, the RFID chip further includes a radio frequency analog front end and a digital logic unit; the radio frequency analog front end is used to complete the energy conversion of the electromagnetic field; the digital logic unit is used to complete a predetermined work logic;

所述射频模拟前端包括整流电路、稳压电路、时钟电路、解调电路、上电复位电路、调整电路、调谐电容、随机数发生器。The RF analog front end includes a rectifier circuit, a voltage regulator circuit, a clock circuit, a demodulation circuit, a power-on reset circuit, an adjustment circuit, a tuning capacitor, and a random number generator.

一种RFID电子标签，包括上述的RFID芯片、记录线圈、射频天线；RFID芯片连接射频天线，所述记录线圈分别连接所述第一连接点、第二连接点。An RFID electronic label includes the above-mentioned RFID chip, a recording coil, and a radio frequency antenna; the RFID chip is connected to the radio frequency antenna, and the recording coil is respectively connected to the first connection point and the second connection point.

作为本实用新型的一种实施方式，所述防开启RFID芯片的射频模拟前端包括第一焊点、第二焊点，所述射频天线连接所述RFID芯片的第一焊点、第二焊点。As an embodiment of the present invention, the radio frequency analog front end of the anti-opening RFID chip includes a first solder joint and a second solder joint, and the radio frequency antenna is connected to the first solder joint and the second solder joint of the RFID chip. .

作为本实用新型的一种实施方式，所述记录线圈外侧具有易断刀口。As an embodiment of the present invention, the outer side of the recording coil is provided with a frangible knife edge.

一种商品，包括上述RFID电子标签；所述RFID电子标签的记录线圈设置于商品的包装封口处，记录线圈能在包装封口被打开后断开。A commodity includes the above-mentioned RFID electronic label; the recording coil of the RFID electronic label is arranged at the packaging seal of the commodity, and the recording coil can be disconnected after the packaging seal is opened.

作为本实用新型的一种实施方式，所述第一连接点、第二连接点分别设置于包装封口的两侧，第一连接点、第二连接点之间的连接线在包装封口被破坏后断开。As an embodiment of the present invention, the first connection point and the second connection point are respectively arranged on both sides of the package seal, and the connection line between the first connection point and the second connection point is damaged after the package seal is damaged. disconnect.

一种RFID芯片的检测方法，所述检测方法包括：A detection method for an RFID chip, the detection method comprises:

利用检测电路检测第一连接点、第二连接点两端的电压或电流，生成反馈信号；并将生成的反馈信号输送至改写电路；Use the detection circuit to detect the voltage or current at both ends of the first connection point and the second connection point to generate a feedback signal; and send the generated feedback signal to the rewriting circuit;

在检测电路输送的反馈信号符合设定条件时，利用改写电路向存储单元进行写操作，写入开启记录信息。When the feedback signal sent by the detection circuit meets the set condition, the rewriting circuit is used to perform a write operation to the storage unit to write the open recording information.

作为本实用新型的一种实施方式，所述改写电路根据检测电路输送的反馈信号工作；As an embodiment of the present invention, the rewriting circuit works according to the feedback signal sent by the detection circuit;

若检测电路检测到第一连接点、第二连接点之间的电压是设定正常值，则表明状态正常，改写电路不做动作；If the detection circuit detects that the voltage between the first connection point and the second connection point is a set normal value, it indicates that the state is normal, and the rewriting circuit does not act;

若检测电路检测到第一连接点、第二连接点两端电压为设定异常值，则表明外延电路部分状态异常，改写电路向存储单元进行写操作，写入被开启记录信息。If the detection circuit detects that the voltages at both ends of the first connection point and the second connection point are set abnormal values, it indicates that the epitaxial circuit is in an abnormal state, and the rewriting circuit writes the memory cell to write the opened record information.

本实用新型的有益效果在于：本实用新型提出的RFID芯片、RFID电子标签、商品，RFID电子标签在使用时将记录天线置于商品包装封口处，而读写天线及功能芯片位于封口以外区域，当商品包装被开启时，标签的记录天线回路被破坏断开，而读写天线及芯片不被破坏且功能完整。The beneficial effects of the present utility model are as follows: the RFID chip, the RFID electronic label, and the commodity proposed by the present utility model, when the RFID electronic label is used, the recording antenna is placed at the seal of the commodity package, and the read-write antenna and the function chip are located outside the seal. When the product package is opened, the recording antenna loop of the tag is broken and disconnected, while the read-write antenna and the chip are not damaged and have complete functions.

由于本实用新型所述RFID电子标签的功能芯片内具有判断记录天线是否连通的逻辑电路，且记录天线导通回路断开记录不可更改，当所述RFID电子标签被用于与商品包装后，在芯片工作时，如记录天线、读写天线及芯片均完整时，电子标签正常工作；当商品包装被开启后，所述记录天线导通回路断开，而读写天线及芯片仍旧完整，电子标签的读写功能仍然正常，但会被记录其记录天线断开了且记录不可再次更改，这样即使该枚RFID电子标签或带有该枚RFID电子标签的商品包装再次被不法分子回收利用，消费者也可通过读写器及相应软件识别出该标签所对应的商品包装已经被开启或使用过，以利于保护消费者合法权益。Since the functional chip of the RFID electronic label of the present invention has a logic circuit for judging whether the recording antenna is connected, and the record of the disconnection of the recording antenna conduction loop cannot be changed, when the RFID electronic label is used for packaging with commodities, the When the chip is working, if the recording antenna, the read-write antenna and the chip are all complete, the electronic label works normally; when the product package is opened, the recording antenna conduction circuit is disconnected, but the read-write antenna and the chip are still intact, and the electronic label The reading and writing function of the RFID tag is still normal, but it will be recorded that the recording antenna is disconnected and the record cannot be changed again, so that even if the RFID electronic tag or the product package with the RFID electronic tag is recycled by criminals again, consumers It can also be recognized through the reader and corresponding software that the product package corresponding to the label has been opened or used, so as to protect the legitimate rights and interests of consumers.

本实用新型的RFID电子标签具备防开启的特性，基于信息记录和反馈功能，记录非授权开启行为，以实现防止非授权的开启的功能。The RFID electronic label of the utility model has the characteristic of preventing opening, and based on the information recording and feedback functions, the unauthorized opening behavior is recorded, so as to realize the function of preventing unauthorized opening.

附图说明Description of drawings

图1为本实用新型一实施例中RFID芯片的组成示意图(连接点连接状态)。FIG. 1 is a schematic diagram of the composition of an RFID chip in an embodiment of the present invention (connection point connection state).

图2为本实用新型一实施例中RFID芯片的组成示意图(连接点断开状态)。2 is a schematic diagram of the composition of an RFID chip in an embodiment of the present invention (connection point disconnected state).

图3为本实用新型一实施例中RFID芯片射频模拟前端的组成示意图。FIG. 3 is a schematic diagram of the composition of a radio frequency analog front end of an RFID chip in an embodiment of the present invention.

图4为本实用新型一实施例中RFID芯片检测过程的流程图。FIG. 4 is a flowchart of an RFID chip detection process in an embodiment of the present invention.

图5为本实用新型一实施例中RFID电子标签的结构示意图。5 is a schematic structural diagram of an RFID electronic tag in an embodiment of the present invention.

图6为本实用新型一实施例中RFID电子标签的结构示意图。6 is a schematic structural diagram of an RFID electronic tag in an embodiment of the present invention.

图7为本实用新型一实施例中RFID电子标签设置于一商品的示意图。7 is a schematic diagram of an RFID electronic tag disposed on a commodity according to an embodiment of the present invention.

图8为本实用新型一实施例中RFID电子标签设置于一商品的示意图(商品封口被打开状态)。FIG. 8 is a schematic diagram of an RFID electronic tag disposed on a commodity in an embodiment of the present invention (the state of the commodity seal being opened).

图9为本实用新型一实施例中RFID电子标签设置于一商品的示意图。9 is a schematic diagram of an RFID electronic tag disposed on a commodity according to an embodiment of the present invention.

图10为本实用新型一实施例中RFID电子标签设置于一商品的示意图(商品封口被打开状态)。FIG. 10 is a schematic diagram of an RFID electronic tag disposed on a commodity in an embodiment of the present invention (the state of the commodity seal being opened).

图11为本实用新型一实施例中RFID芯片的组成示意图(连接点连接状态)。11 is a schematic diagram of the composition of an RFID chip in an embodiment of the present invention (connection point connection state).

图12为本实用新型一实施例中RFID芯片的检测电路的示意图(外延电路断开)。12 is a schematic diagram of a detection circuit of an RFID chip in an embodiment of the present invention (the epitaxial circuit is disconnected).

图13为本实用新型一实施例中RFID芯片的检测电路的示意图(电路导通)。FIG. 13 is a schematic diagram of a detection circuit of an RFID chip in an embodiment of the present invention (circuit is on).

图14为本实用新型一实施例中RFID芯片的改写电路的示意图。14 is a schematic diagram of a rewriting circuit of an RFID chip in an embodiment of the present invention.

具体实施方式Detailed ways

下面结合附图详细说明本实用新型的优选实施例。The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

为了进一步理解本实用新型，下面结合实施例对本实用新型优选实施方案进行描述，但是应当理解，这些描述只是为进一步说明本实用新型的特征和优点，而不是对本实用新型权利要求的限制。In order to further understand the present utility model, the preferred embodiments of the present utility model are described below in conjunction with the examples, but it should be understood that these descriptions are only to further illustrate the features and advantages of the present utility model, rather than limit the claims of the present utility model.

该部分的描述只针对几个典型的实施例，本实用新型并不仅局限于实施例描述的范围。相同或相近的现有技术手段与实施例中的一些技术特征进行相互替换也在本实用新型描述和保护的范围内。The description in this section is only for several typical embodiments, and the present invention is not limited to the scope of the description of the embodiments. It is also within the scope of the description and protection of the present invention that the same or similar prior art means and some technical features in the embodiments are replaced with each other.

本实用新型揭示了一种RFID芯片，所述RFID芯片包括检测电路、存储单元、第一连接点、第二连接点及改写电路；所述检测电路连接改写电路，所述改写电路连接存储单元。所述检测电路分别连接第一连接点、第二连接点，检测第一连接点、第二连接点两端的电压或电流，生成反馈信号，并将生成的反馈信号发送至改写电路；所述改写电路用以在检测电路输送设定反馈信号时向存储单元进行写操作，写入开启记录信息。The utility model discloses an RFID chip, which comprises a detection circuit, a storage unit, a first connection point, a second connection point and a rewriting circuit; the detection circuit is connected with the rewriting circuit, and the rewriting circuit is connected with the storage unit. The detection circuit is respectively connected to the first connection point and the second connection point, detects the voltage or current at both ends of the first connection point and the second connection point, generates a feedback signal, and sends the generated feedback signal to the rewriting circuit; the rewriting The circuit is used to perform a write operation to the storage unit when the detection circuit transmits the setting feedback signal, and write the opening recording information.

图1为本实用新型一实施例中RFID芯片的组成示意图(连接点连接状态)，图2为本实用新型一实施例中RFID芯片的组成示意图(连接点断开状态)；请参阅图1、图2，所述RFID芯片包括：检测电路6、存储单元(可以为存储器3)、第一连接点4、第二连接点5及改写电路7。1 is a schematic diagram of the composition of an RFID chip in an embodiment of the present utility model (connection point connected state), FIG. 2 is a schematic composition diagram of an RFID chip in an embodiment of the present utility model (connection point disconnected state); please refer to FIG. 1, 2 , the RFID chip includes: a detection circuit 6 , a storage unit (which may be a memory 3 ), a first connection point 4 , a second connection point 5 and a rewrite circuit 7 .

在本实用新型的一实施例中，第一连接点4可以为第一外置连接点，第二连接点5可以为第二外置连接点。第一连接点4、第二连接点5的连接构成上述芯片的外延电路部分。In an embodiment of the present invention, the first connection point 4 may be a first external connection point, and the second connection point 5 may be a second external connection point. The connection between the first connection point 4 and the second connection point 5 constitutes the epitaxial circuit part of the chip.

所述检测电路6分别连接第一连接点4、第二连接点5，检测第一连接点4、第二连接点5两端的电压或电流，并生成反馈信号。所述检测电路6连接改写电路7，所述检测电路6用以将生成的反馈信号输送至改写电路7。所述改写电路7连接存储单元，所述改写电路7用以在检测电路6输送的反馈信号符合设定条件时，向存储单元进行写操作，写入开启记录信息。The detection circuit 6 is respectively connected to the first connection point 4 and the second connection point 5 , detects the voltage or current across the first connection point 4 and the second connection point 5 , and generates a feedback signal. The detection circuit 6 is connected to the rewriting circuit 7 , and the detection circuit 6 is used for sending the generated feedback signal to the rewriting circuit 7 . The rewriting circuit 7 is connected to the storage unit, and the rewriting circuit 7 is used to perform a write operation to the storage unit when the feedback signal sent by the detection circuit 6 meets the set condition, and write the opening recording information.

在本实用新型的一个实施例中，所述改写电路7根据检测电路6输送的反馈信号工作；若检测电路6检测到第一连接点4、第二连接点5之间的电压是设定正常值，则表明状态正常，改写电路7不做动作；若检测电路6检测到第一连接点4、第二连接点5两端电压为设定异常值，则表明外延电路部分状态异常，改写电路7向存储单元进行写操作，写入商品被开启记录信息。In an embodiment of the present invention, the rewriting circuit 7 works according to the feedback signal sent by the detection circuit 6; if the detection circuit 6 detects that the voltage between the first connection point 4 and the second connection point 5 is set normally If the detection circuit 6 detects that the voltages at both ends of the first connection point 4 and the second connection point 5 are set abnormal values, it indicates that the state of the epitaxial circuit is abnormal, and the rewrite circuit 7. Perform a write operation to the storage unit, and write the record information that the commodity is opened.

图12为本实用新型一实施例中RFID芯片的检测电路的示意图(外延电路断开)，图13为本实用新型一实施例中RFID芯片的检测电路的示意图(电路导通)；请参阅图12、图13，在本实用新型的一实施例中，检测电路6包括第一比较器61。第一比较器61的反相输入端连接电压VL，第一比较器61的正相输入端在第一连接点4、第二连接点5之间为通路的状态下能接收到电压VH信号(如图13所示)，此时第一比较器61的输出端输送电压VH信号至改写电路7。第一比较器61的正相输入端在第一连接点4、第二连接点5之间断开的状态下无法接收到电压VH信号(如图12所示)，此时第一比较器61的输出端输送电压VL信号至改写电路7。12 is a schematic diagram of a detection circuit of an RFID chip in an embodiment of the present invention (the epitaxial circuit is disconnected), and FIG. 13 is a schematic diagram of a detection circuit of an RFID chip in an embodiment of the present invention (the circuit is turned on); please refer to FIG. 12 . In FIG. 13 , in an embodiment of the present invention, the detection circuit 6 includes a first comparator 61 . The inverting input terminal of the first comparator 61 is connected to the voltage VL, and the non-inverting input terminal of the first comparator 61 can receive the voltage VH signal ( As shown in FIG. 13 ), at this time, the output terminal of the first comparator 61 sends the voltage VH signal to the rewriting circuit 7 . When the non-inverting input terminal of the first comparator 61 is disconnected between the first connection point 4 and the second connection point 5, it cannot receive the voltage VH signal (as shown in FIG. 12 ). The output terminal supplies the voltage VL signal to the rewriting circuit 7 .

图14为本实用新型一实施例中RFID芯片的改写电路的示意图；请参阅图14，在本实用新型的一实施例中，改写电路7通过一第二比较器71实现改写工作。第二比较器71的正相输入端连接电压VH，第二比较器71的反相输入端连接第一比较器61的输出信号。若第一比较器61的输出信号为电压VH信号，第二比较器71的输出端输出正常信号(不对存储器3输入改写信号)；若第一比较器61的输出信号为电压VL信号，第二比较器71的输出端输出开启记录信息写入信号(向存储器3写入商品被开启记录信息)。14 is a schematic diagram of a rewriting circuit of an RFID chip in an embodiment of the present invention; please refer to FIG. 14 , in an embodiment of the present invention, the rewriting circuit 7 realizes the rewriting operation through a second comparator 71 . The non-inverting input terminal of the second comparator 71 is connected to the voltage VH, and the inverting input terminal of the second comparator 71 is connected to the output signal of the first comparator 61 . If the output signal of the first comparator 61 is the voltage VH signal, the output terminal of the second comparator 71 outputs a normal signal (the rewriting signal is not input to the memory 3); if the output signal of the first comparator 61 is the voltage VL signal, the second The output terminal of the comparator 71 outputs the record-on-record write signal (to write the record-on-commodity information into the memory 3).

在本实用新型的一个实施例中，如图1、图2所示，所述检测电路6连接第二连接点5，改写电路7连接第一连接点4；在第一连接点4连接第二连接点5的状态下，检测电路6、改写电路7、第一连接点4、第二连接点5形成回路。其中，VDD是器件内部工作电压，Din/Dout是数字输入输出，W/R是读写操作，ADDR是地址信号，DAT是数据信号，LA/LB是RFID射频天线旳两个接线端，PAD是RFID芯片上的焊盘。In an embodiment of the present invention, as shown in FIG. 1 and FIG. 2 , the detection circuit 6 is connected to the second connection point 5 , the rewriting circuit 7 is connected to the first connection point 4 ; the first connection point 4 is connected to the second connection point 4 . In the state of the connection point 5 , the detection circuit 6 , the rewriting circuit 7 , the first connection point 4 , and the second connection point 5 form a loop. Among them, VDD is the internal working voltage of the device, Din/Dout is the digital input and output, W/R is the read and write operation, ADDR is the address signal, DAT is the data signal, LA/LB is the two terminals of the RFID radio frequency antenna, and PAD is the Pads on RFID chips.

图11为本实用新型一实施例中RFID芯片的组成示意图(连接点连接状态)；请参阅图11，在本实用新型的另一实施例中，检测电路6可以直接连接第一连接点4、第二连接点5，改写电路7连接检测电路6即可。11 is a schematic diagram of the composition of an RFID chip in an embodiment of the present invention (connection point connection state); please refer to FIG. 11, in another embodiment of the present invention, the detection circuit 6 can be directly connected to the first connection point 4, For the second connection point 5 , the rewriting circuit 7 can be connected to the detection circuit 6 .

在本实用新型的一实施例中，所述RFID芯片包括射频模拟前端1、数字逻辑单元2，检测电路6作为数字逻辑单元2的一部分。In an embodiment of the present invention, the RFID chip includes a radio frequency analog front end 1 , a digital logic unit 2 , and a detection circuit 6 as a part of the digital logic unit 2 .

所述射频模拟前端1用以完成电磁场的能量转换；所述数字逻辑单元2用以完成既定工作逻辑；所述存储器3用以存储通信数据信息。射频模拟前端1在接收无线电波后，会把其中一部分转化成驱动电路的电能，为RFID芯片及RFID电子标签提供工作所需的电能。The radio frequency analog front end 1 is used to complete the energy conversion of the electromagnetic field; the digital logic unit 2 is used to complete the predetermined work logic; the memory 3 is used to store the communication data information. After the radio frequency analog front end 1 receives radio waves, it will convert a part of it into electric power of the driving circuit, so as to provide the electric power required for the work of the RFID chip and the RFID electronic tag.

图3为本实用新型一实施例中RFID芯片射频模拟前端的组成示意图；请参阅图3，在本实用新型的一实施例中，所述射频模拟前端包括整流电路、稳压电路、时钟电路、解调电路、上电复位电路、调整电路、调谐电容、随机数发生器。射频模拟前端的技术已经非常成熟，可以使用现有的射频模拟前端，或者后期新研发的射频模拟前端；射频模拟前端并非本申请的核心改进，这里不做赘述。3 is a schematic diagram of the composition of an RFID chip radio frequency analog front end in an embodiment of the present invention; please refer to FIG. 3, in an embodiment of the present invention, the radio frequency analog front end includes a rectifier circuit, a voltage regulator circuit, a clock circuit, Demodulation circuit, power-on reset circuit, adjustment circuit, tuning capacitor, random number generator. The technology of the RF analog front end is very mature, and the existing RF analog front end or the RF analog front end newly developed in the later stage can be used; the RF analog front end is not the core improvement of this application, and will not be repeated here.

本实用新型揭示一种RFID芯片的检测方法，图4为本实用新型一实施例中RFID芯片检测过程的流程图；请参阅图4，在本实用新型的一实施例中，所述检测方法包括：利用检测电路6检测第一连接点4、第二连接点5两端的电压或电流，生成反馈信号；并将生成的反馈信号输送至改写电路7；在检测电路6输送的反馈信号符合设定条件时，利用改写电路7向存储单元进行写操作，写入开启记录信息。The present invention discloses a method for detecting an RFID chip. FIG. 4 is a flowchart of an RFID chip detecting process in an embodiment of the present invention; please refer to FIG. 4 , in an embodiment of the present invention, the detecting method includes: : use the detection circuit 6 to detect the voltage or current at both ends of the first connection point 4 and the second connection point 5 to generate a feedback signal; and transmit the generated feedback signal to the rewriting circuit 7; the feedback signal transmitted in the detection circuit 6 conforms to the setting When conditions are met, the rewriting circuit 7 is used to perform a write operation to the memory cell to write the start recording information.

在本实用新型的一实施例中，所述改写电路7根据检测电路6输送的反馈信号工作；若检测电路6检测到第一连接点4、第二连接点5之间的电压是设定正常值，则表明状态正常，改写电路7不做动作；若检测电路6检测到第一连接点4、第二连接点5两端电压为设定异常值，则表明外延电路部分状态异常，改写电路7向存储单元进行写操作，写入被开启记录信息。In an embodiment of the present invention, the rewriting circuit 7 works according to the feedback signal sent by the detection circuit 6; if the detection circuit 6 detects that the voltage between the first connection point 4 and the second connection point 5 is set normally If the detection circuit 6 detects that the voltages at both ends of the first connection point 4 and the second connection point 5 are set abnormal values, it indicates that the state of the epitaxial circuit is abnormal, and the rewrite circuit 7. Perform a write operation to the storage unit, and write the opened record information.

在本实用新型的一实施例中，当外界有电磁波驱动所述芯片工作时，芯片内部的检测电路6检测第一连接点4、第二连接点5上的电压，若第一连接点4、第二连接点5正常连接，电压是正常值VH，则表明状态正常；若检测电路6检测到第一连接点4、第二连接点5两端电压为异常值VL，则表明外延电路部分状态异常，改写电路7向存储器3进行写操作，写入开启记录信息；如图2所示。VH、VL作为电压值，在具体实施中受限于实际的设备和使用环境，因此只能根据实际的例子给出区间，在本实用新型的一实施例中，VH＝1.6V～3V，VL＝0V～1.5V。In an embodiment of the present invention, when the chip is driven by an electromagnetic wave from the outside, the detection circuit 6 inside the chip detects the voltage on the first connection point 4 and the second connection point 5. If the first connection point 4, The second connection point 5 is normally connected, and the voltage is the normal value VH, which indicates that the state is normal; if the detection circuit 6 detects that the voltages at both ends of the first connection point 4 and the second connection point 5 are abnormal values VL, it indicates that the state of the epitaxial circuit is partially If abnormal, the rewriting circuit 7 performs a write operation to the memory 3, and writes the opening record information; as shown in FIG. 2 . As voltage values, VH and VL are limited by the actual equipment and use environment in the specific implementation, so the interval can only be given according to actual examples. In an embodiment of the present invention, VH=1.6V～3V, VL =0V～1.5V.

在本实用新型的一实施例中，基于芯片电路功能检测上述“外延电路部分状态异常”的过程，也可通过检测电流实现，原理与检测电压类似。In an embodiment of the present invention, the process of detecting the above-mentioned "abnormal state of the epitaxial circuit part" based on the function of the chip circuit can also be realized by detecting the current, and the principle is similar to that of detecting the voltage.

图4为本实用新型一实施例中RFID芯片检测过程的流程图；请参阅图4，在本实用新型的一实施例中，所述RFID芯片的检测方法具体包括如下步骤：FIG. 4 is a flowchart of an RFID chip detection process in an embodiment of the present invention; please refer to FIG. 4 , in an embodiment of the present invention, the method for detecting an RFID chip specifically includes the following steps:

步骤S1、当外界有电磁波驱动RFID芯片工作时，上电开始；Step S1, when there is an external electromagnetic wave driving the RFID chip to work, the power-on starts;

步骤S2、射频模拟前端1、数字逻辑单元2开始工作(包括对信号进行稳压、整流、调制解调处理)；Step S2, the radio frequency analog front end 1 and the digital logic unit 2 start to work (including stabilizing, rectifying, and modulating and demodulating the signal);

步骤S3、读取存储器3中的数据；Step S3, read the data in the memory 3;

步骤S4、判断存储器中是否有开启记录信息；若没有，转至步骤S6；若有，转至步骤S5；Step S4, determine whether there is open record information in the memory; if not, go to step S6; if so, go to step S5;

步骤S5、检测第一连接点4、第二连接点5之间的电压；Step S5, detecting the voltage between the first connection point 4 and the second connection point 5;

若检测电路6检测到第一连接点4、第二连接点5之间的电压是设定正常值VH，则表明状态正常，转至步骤S6；If the detection circuit 6 detects that the voltage between the first connection point 4 and the second connection point 5 is the set normal value VH, it indicates that the state is normal, and then goes to step S6;

若检测电路6检测到第一连接点4、第二连接点5两端电压为设定异常值VL，则表明外延电路部分状态异常，转至步骤S7；If the detection circuit 6 detects that the voltages at both ends of the first connection point 4 and the second connection point 5 are the set abnormal value VL, it indicates that the state of the epitaxial circuit is abnormal, and the process goes to step S7;

步骤S6、改写电路7无操作；转至步骤S8；Step S6, the rewriting circuit 7 has no operation; go to step S8;

步骤S7、改写电路7向存储单元进行写操作，写入被开启记录信息；转至步骤S8；Step S7, the rewriting circuit 7 performs a write operation to the storage unit, and writes the opened record information; go to step S8;

步骤S8、芯片主体继续完成通讯程序。Step S8, the main body of the chip continues to complete the communication procedure.

本实用新型揭示一种RFID电子标签，图5、图6分别为本实用新型一实施例中RFID电子标签的结构示意图；请参阅图5、图6，在本实用新型的一实施例中，RFID电子标签包括上述的RFID芯片、记录线圈9、射频天线10。RFID芯片连接射频天线10，所述记录线圈9分别连接所述第一连接点4、第二连接点5。The present invention discloses an RFID electronic label, and FIGS. 5 and 6 are respectively a schematic structural diagram of an RFID electronic label in an embodiment of the present invention; please refer to FIGS. 5 and 6 , in an embodiment of the present invention, the RFID The electronic tag includes the above-mentioned RFID chip, recording coil 9 , and radio frequency antenna 10 . The RFID chip is connected to the radio frequency antenna 10 , and the recording coil 9 is connected to the first connection point 4 and the second connection point 5 respectively.

在本实用新型的一实施例中，所述防开启RFID芯片的射频模拟前端包括第一焊点、第二焊点，所述射频天线10连接所述RFID芯片的第一焊点、第二焊点。In an embodiment of the present invention, the RF analog front end of the anti-opening RFID chip includes a first solder joint and a second solder joint, and the RF antenna 10 is connected to the first solder joint and the second solder joint of the RFID chip. point.

在本实用新型的一实施例中，所述记录线圈9外侧具有易断刀口。In an embodiment of the present invention, the outside of the recording coil 9 has a frangible knife edge.

在本实用新型的一实施例中，所述RFID电子标签包括防开启RFID芯片、记录线圈9、射频天线10；所述RFID芯片包括：射频模拟前端1、数字逻辑单元2、存储器3、第一连接点4、第二连接点5及改写电路7；所述记录线圈9分别连接所述第一连接点4、第二连接点5。In an embodiment of the present invention, the RFID electronic label includes an anti-opening RFID chip, a recording coil 9, and a radio frequency antenna 10; the RFID chip includes: a radio frequency analog front end 1, a digital logic unit 2, a memory 3, a first The connection point 4 , the second connection point 5 and the rewriting circuit 7 ; the recording coil 9 is connected to the first connection point 4 and the second connection point 5 respectively.

所述数字逻辑单元2包括检测电路6，检测电路6连接改写电路7，所述改写电路7连接存储器3。The digital logic unit 2 includes a detection circuit 6 , the detection circuit 6 is connected to a rewriting circuit 7 , and the rewriting circuit 7 is connected to the memory 3 .

所述检测电路6连接第二连接点5，改写电路7连接第一连接点4；在第一连接点4连接第二连接点5的状态下，检测电路6、改写电路7、第一连接点4、第二连接点5形成回路。The detection circuit 6 is connected to the second connection point 5, and the rewriting circuit 7 is connected to the first connection point 4; when the first connection point 4 is connected to the second connection point 5, the detection circuit 6, the rewriting circuit 7, the first connection point 4. The second connection point 5 forms a loop.

所述检测电路6用以根据检测到第一连接点4、第二连接点5两端电压或电流生成反馈信号至改写电路7。所述改写电路7用以根据所述检测电路6的反馈信号向存储器3进行写操作，写入开启记录信息。The detection circuit 6 is used for generating a feedback signal to the rewriting circuit 7 according to the detected voltage or current across the first connection point 4 and the second connection point 5 . The rewriting circuit 7 is used to perform a writing operation to the memory 3 according to the feedback signal of the detecting circuit 6 to write the record-opening information.

所述检测电路6检测第一连接点4、第二连接点5之间的电压或电流；若检测电路6检测到第一连接点4、第二连接点5之间的电压是正常值VH，则表明状态正常；若检测电路6检测到第一连接点4、第二连接点5两端电压为异常值VL，则表明外延电路部分状态异常，改写电路7向存储器3进行写操作，写入开启记录信息。The detection circuit 6 detects the voltage or current between the first connection point 4 and the second connection point 5; if the detection circuit 6 detects that the voltage between the first connection point 4 and the second connection point 5 is the normal value VH, Then it shows that the state is normal; if the detection circuit 6 detects that the voltage at both ends of the first connection point 4 and the second connection point 5 is an abnormal value VL, it indicates that the state of the epitaxial circuit is abnormal, and the rewriting circuit 7 writes to the memory 3. Turn on logging information.

所述射频天线10连接所述防开启RFID芯片的第一焊点、第二焊点，射频天线10为高频或超高频天线；所述记录线圈9外侧具有易断刀口，使之记录天线易于被破坏，导通回路断开。The radio frequency antenna 10 is connected to the first solder joint and the second solder joint of the anti-opening RFID chip, and the radio frequency antenna 10 is a high-frequency or ultra-high-frequency antenna; the outside of the recording coil 9 has a fragile knife edge, so that it can record the antenna It is easy to be damaged, and the conduction loop is disconnected.

在本实用新型的一实施例中，RFID电子标签至少包括所述防开启RFID芯片8、记录线圈9、射频天线10和基体11。所述射频天线10连接所述防开启RFID芯片的LA和LB端点(即RFID射频天线旳两个接线端)，射频天线10为高频或超高频天线。所述基体11采用纸质基材、CN102982364A公开的防转移基材；或使用传统PET膜质基材制备天线。In an embodiment of the present invention, the RFID electronic tag at least includes the anti-opening RFID chip 8 , a recording coil 9 , a radio frequency antenna 10 and a base body 11 . The radio frequency antenna 10 is connected to the LA and LB terminals of the anti-opening RFID chip (ie, the two terminals of the RFID radio frequency antenna), and the radio frequency antenna 10 is a high frequency or ultra-high frequency antenna. The base 11 is made of paper base material, anti-transfer base material disclosed in CN102982364A; or traditional PET film base material is used to prepare the antenna.

本实用新型还揭示了一种设置了RFID电子标签的商品，包括上述RFID电子标签；所述RFID电子标签的记录线圈9设置于商品的包装封口处，记录线圈9能在包装封口被打开后断开。The utility model also discloses a commodity provided with an RFID electronic label, including the above-mentioned RFID electronic label; the recording coil 9 of the RFID electronic label is arranged at the packaging seal of the commodity, and the recording coil 9 can be broken after the packaging seal is opened. open.

在本实用新型的一实施例中，所述第一连接点4、第二连接点5分别设置于包装封口13的两侧，第一连接点4、第二连接点5之间的连接线在包装封口13被破坏后断开。In an embodiment of the present invention, the first connection point 4 and the second connection point 5 are respectively disposed on both sides of the packaging seal 13 , and the connection line between the first connection point 4 and the second connection point 5 is at The package seal 13 is broken and broken.

图7、图8为本实用新型一实施例中RFID电子标签设置于一商品的示意图；请参阅图7、图8，在本实用新型的一实施例中，商品为瓶体。记录线圈9的两端分别设置于瓶体包装封口13的两侧，记录线圈9能在包装封口被打开后断开。FIG. 7 and FIG. 8 are schematic diagrams showing that the RFID electronic label is arranged on a commodity in an embodiment of the present invention; please refer to FIG. 7 and FIG. 8 , in an embodiment of the present invention, the commodity is a bottle body. Both ends of the recording coil 9 are respectively arranged on both sides of the bottle body packaging seal 13, and the recording coil 9 can be disconnected after the packaging seal is opened.

在本实用新型的一实施例中，按照说明书的结构，设计电路并经流片制备防开启RFID芯片8。经过Bonding流程，以PET薄膜为基材制备RFID电子标签，该RFID标签由防开启RFID芯片8、记录线圈9和高频射频天线10组成，该RFID功能芯片8上具有连接点4和5，连接记录线圈9。即该RFID功能芯片上具有两组导通引脚12，一组与记录线圈连通，另一组与超高频射频天线相连通。此芯片搭配小型手持设备使用，根据设备的灵敏度和功率，调整外延电路与芯片检测电路的参数，设定VH＝3V，VL＝1.5V。另外为了达到记录天线易于被破坏的目的，在记录天线外侧切有易断刀口。In an embodiment of the present invention, according to the structure of the specification, the circuit is designed and the anti-opening RFID chip 8 is prepared by tape-out. After the Bonding process, an RFID electronic tag is prepared with PET film as the base material. The RFID tag is composed of an anti-opening RFID chip 8, a recording coil 9 and a high-frequency radio frequency antenna 10. The RFID functional chip 8 has connection points 4 and 5. Record coil 9. That is, the RFID functional chip has two groups of conducting pins 12, one group is connected with the recording coil, and the other group is connected with the ultra-high frequency radio frequency antenna. This chip is used with a small handheld device. According to the sensitivity and power of the device, adjust the parameters of the epitaxial circuit and the chip detection circuit, and set VH=3V, VL=1.5V. In addition, in order to achieve the purpose that the recording antenna is easy to be damaged, a frangible knife edge is cut on the outside of the recording antenna.

在使用时，将该RFID电子标签的记录天线贴于商品包装封口13处，其余部分位于封口以外区域(如图7、图8所示)；当商品包装被开启时，旋转动作使电子标签中的记录线圈断开，其余部分仍保持完整，RFID信息读写功能正常，但功能芯片中的检测电路将判断该枚RFID电子标签的记录线圈已断开并启动改写电路记录，该记录不可更改；这时该枚RFID电子标签仍可正常读写，消费者仍旧可以通过RFID读写器及相应软件查验其产品溯源信息，同时即使该商品包装或RFID电子标签被不法分子回收利用，由于其芯片中已经具有了不可更改的记录信息，消费者可通过RFID读写器及相应软件识别出该标签所对应的商品包装已经被开启或使用过，以警示消费者，确保其合法权益不受损失。When in use, the recording antenna of the RFID electronic label is attached to the seal 13 of the product package, and the rest is located outside the seal (as shown in Figures 7 and 8); when the product package is opened, the rotating action makes the electronic label in the The recording coil of the RFID tag is disconnected, the rest remains intact, and the RFID information reading and writing function is normal, but the detection circuit in the function chip will judge that the recording coil of the RFID electronic tag has been disconnected and start to rewrite the circuit record, the record cannot be changed; At this time, the RFID electronic tag can still be read and written normally, and consumers can still check their product traceability information through the RFID reader and corresponding software. With the unchangeable record information, consumers can identify through the RFID reader and corresponding software that the product packaging corresponding to the label has been opened or used to warn consumers and ensure that their legitimate rights and interests are not lost.

图9、图10为本实用新型一实施例中RFID电子标签设置于一商品的示意图；请参阅图9、图10，在本实用新型的一实施例中，商品为盒体。记录线圈9的两端分别设置于瓶体包装封口13的两侧，记录线圈9能在包装封口被打开后断开。9 and 10 are schematic diagrams of RFID electronic tags disposed on a commodity in an embodiment of the present invention; please refer to FIGS. 9 and 10 , in an embodiment of the present invention, the commodity is a box body. Both ends of the recording coil 9 are respectively arranged on both sides of the bottle body packaging seal 13, and the recording coil 9 can be disconnected after the packaging seal is opened.

在本实用新型的一实施例中，按照说明书的结构，设计电路并经流片制备防开启RFID芯片8。经过Bonding流程，以CN102982364A公开的防转移基材制备RFID电子标签，该RFID标签由防开启RFID芯片8、记录线圈9和超高频射频天线10组成，该RFID功能芯片8上具有连接点4和5，连接记录线圈9。即该RFID功能芯片上具有两组导通引脚12，一组与记录线圈连通，另一组与超高频射频天线相连通。此芯片搭配较大功率的手持设备或固定扫描设备使用，根据设备的灵敏度和功率，调整外延电路与芯片检测电路的参数，设定VH＝1.6V，VL＝0V。In an embodiment of the present invention, according to the structure of the specification, the circuit is designed and the anti-opening RFID chip 8 is prepared by tape-out. After the Bonding process, an RFID electronic tag is prepared with the anti-transfer substrate disclosed in CN102982364A. The RFID tag is composed of an anti-opening RFID chip 8, a recording coil 9 and an ultra-high frequency radio frequency antenna 10. The RFID functional chip 8 has connection points 4 and 5. Connect the recording coil 9. That is, the RFID functional chip has two groups of conducting pins 12, one group is connected with the recording coil, and the other group is connected with the ultra-high frequency radio frequency antenna. This chip is used with high-power handheld equipment or fixed scanning equipment. According to the sensitivity and power of the equipment, adjust the parameters of the epitaxial circuit and chip detection circuit, and set VH=1.6V, VL=0V.

在使用时，将该RFID电子标签的记录线圈贴于商品包装封口处(如图9、图10所示)，其余部分位于封口以外区域；当商品包装被开启时，开启的拉扯力将电子标签中的记录线圈撕扯断开，其余部分仍保持完整，RFID信息读写功能正常，但RFID芯片中的检测电路将判断该枚RFID电子标签的记录线圈已断开并启动改写电路记录，该记录不可更改；这时该枚RFID电子标签仍可正常读写，消费者仍旧可以通过RFID读写器及相应软件查验其产品溯源信息，同时即使该商品包装或RFID电子标签被不法分子回收利用，由于其芯片中已经具有了不可更改的记录信息，消费者可通过RFID读写器及相应软件识别出该标签所对应的商品包装已经被开启或使用过，以警示消费者，确保其合法权益不受损失。When in use, the recording coil of the RFID electronic label is attached to the seal of the product package (as shown in Figure 9 and Figure 10), and the rest is located outside the seal; when the product package is opened, the pulling force of the opening will remove the electronic label. The recording coil in the RFID tag is torn and disconnected, and the rest remains intact. The RFID information read and write function is normal, but the detection circuit in the RFID chip will judge that the recording coil of the RFID electronic tag has been disconnected and start to rewrite the circuit record, which cannot be recorded. Change; at this time, the RFID electronic tag can still be read and written normally, and consumers can still check the traceability information of their products through the RFID reader and corresponding software. The chip already has unchangeable record information, and consumers can identify through the RFID reader and corresponding software that the packaging of the product corresponding to the label has been opened or used, to warn consumers and ensure that their legitimate rights and interests are not damaged. .

综上所述，本实用新型提出的RFID芯片、RFID电子标签、商品，RFID电子标签在使用时将记录天线置于商品包装封口处，而读写天线及功能芯片位于封口以外区域，当商品包装被开启时，标签的记录天线回路被破坏断开，而读写天线及芯片不被破坏且功能完整。To sum up, the RFID chip, RFID electronic label, commodity and RFID electronic label proposed by the present invention place the recording antenna at the seal of the product package when in use, while the read-write antenna and the function chip are located outside the seal. When turned on, the recording antenna loop of the tag is broken and disconnected, while the read-write antenna and the chip are not damaged and have complete functions.

由于本实用新型所述RFID电子标签的功能芯片内具有判断记录天线是否连通的逻辑电路，且记录天线导通回路断开记录不可更改，当所述RFID电子标签被用于与商品包装后，在芯片工作时，如记录天线、读写天线及芯片均完整时，电子标签正常工作；当商品包装被开启后，所述记录天线导通回路断开，而读写天线及芯片仍旧完整，电子标签的读写功能仍然正常，但会被记录其记录天线断开了且记录不可再次更改，这样即使该枚RFID电子标签或带有该枚RFID电子标签的商品包装再次被不法分子回收利用，消费者也可通过读写器及相应软件识别出该标签所对应的商品包装已经被开启或使用过，以利于保护消费者合法权益。Since the functional chip of the RFID electronic label of the present invention has a logic circuit for judging whether the recording antenna is connected, and the record of the disconnection of the recording antenna conduction loop cannot be changed, when the RFID electronic label is used for packaging with commodities, the When the chip is working, if the recording antenna, the read-write antenna and the chip are all complete, the electronic label works normally; when the product package is opened, the recording antenna conduction circuit is disconnected, but the read-write antenna and the chip are still intact, and the electronic label The reading and writing function of the RFID tag is still normal, but it will be recorded that the recording antenna is disconnected and the record cannot be changed again, so that even if the RFID electronic tag or the product package with the RFID electronic tag is recycled by criminals again, consumers It can also be recognized through the reader and corresponding software that the product package corresponding to the label has been opened or used, so as to protect the legitimate rights and interests of consumers.

本实用新型的RFID电子标签具备防开启的特性，基于信息记录和反馈功能，记录非授权开启行为，以实现防止非授权的开启的功能。The RFID electronic label of the utility model has the characteristic of preventing opening, and based on the information recording and feedback functions, the unauthorized opening behavior is recorded, so as to realize the function of preventing unauthorized opening.

这里本实用新型的描述和应用是说明性的，并非想将本实用新型的范围限制在上述实施例中。这里所披露的实施例的变形和改变是可能的，对于那些本领域的普通技术人员来说实施例的替换和等效的各种部件是公知的。本领域技术人员应该清楚的是，在不脱离本实用新型的精神或本质特征的情况下，本实用新型可以以其它形式、结构、布置、比例，以及用其它组件、材料和部件来实现。在不脱离本实用新型范围和精神的情况下，可以对这里所披露的实施例进行其它变形和改变。The description and application of the present invention here are illustrative, and are not intended to limit the scope of the present invention to the above-described embodiments. Variations and variations of the embodiments disclosed herein are possible, and alternative and equivalent various components of the embodiments are known to those of ordinary skill in the art. It should be apparent to those skilled in the art that the present invention may be implemented in other forms, structures, arrangements, proportions, and with other components, materials and components without departing from the spirit or essential characteristics of the present invention. Other modifications and changes to the embodiments disclosed herein may be made without departing from the scope and spirit of the invention.

Claims (10)

1. a kind of RFID chip, which is characterized in that the RFID chip includes: detection circuit (6), storage unit, the first connectionPoint (4), the second tie point (5) and rewriting circuit (7)；Circuit (7) are rewritten in detection circuit (6) connection, the rewriting circuit(7) storage unit is connected；

The detection circuit (6) is separately connected the first tie point (4), the second tie point (5), detects the first tie point (4), secondThe voltage or electric current at tie point (5) both ends generate feedback signal, and the feedback signal of generation are sent to rewriting circuit；

The rewriting circuit (7) is write to carry out write operation to storage unit when detection circuit (6) convey setting feedback signalEnter open record information.

2. RFID chip according to claim 1, it is characterised in that:

The detection circuit (6) includes first comparator (61)；The inverting input terminal of the first comparator (61) connects voltageVL；In the state of being access between the first tie point (4), the second tie point (5), the normal phase input end of first comparator (61)Voltage VH signal can be received, the output end of first comparator (61) conveys voltage VH signal to rewriting circuit (7)；Connect firstContact (4), the second tie point (5) it is separated in the state of, the normal phase input end of first comparator (61) can not receive electricityVH signal is pressed, in this state, the output end of first comparator (61) conveys voltage VL signal to rewriting circuit (7).

3. RFID chip according to claim 1, it is characterised in that:

The rewriting circuit (7) includes the second comparator (71)；The normal phase input end of second comparator (71) connects voltageVH, the output signal of inverting input terminal connection first comparator (61) of the second comparator (71)；

In the state that the output signal of first comparator (61) is voltage VH signal, the output end output of the second comparator (71)Normal signal；

In the state that the output signal of first comparator (61) is voltage VL signal, the output end output of the second comparator (71)Signal is written in open record information, is turned on record information to storage unit write-in commodity.

4. RFID chip according to claim 1, it is characterised in that:

The detection circuit (6) connects the second tie point (5), rewrites circuit (7) connection the first tie point (4)；In the first connectionIn the state that point (4) connects the second tie point (5), detection circuit (6) rewrites circuit (7), the first tie point (4), the second connectionPoint (5) forming circuit.

5. RFID chip according to claim 1, it is characterised in that:

The RFID chip further includes rf analog front-end (1), digital logic unit (2)；

The rf analog front-end (1) is converted to complete the energy of electromagnetic field；The digital logic unit (2) is to complete bothDetermine work-based logic；

The rf analog front-end includes rectification circuit, voltage regulator circuit, clock circuit, demodulator circuit, electrification reset circuit, adjustmentCircuit, tuning capacitance, randomizer.

6. a kind of RFID electronic label, it is characterised in that: including RFID chip described in one of claim 1 to 5, record coil(9), radio-frequency antenna (10)；RFID chip connects radio-frequency antenna (10), and the record coil (9) is separately connected first connectionPoint (4), the second tie point (5).

7. RFID electronic label according to claim 6, it is characterised in that:

The rf analog front-end of the RFID chip includes the first solder joint, the second solder joint, described in the radio-frequency antenna (10) connectionThe first solder joint, the second solder joint of RFID chip.

8. RFID electronic label according to claim 6, it is characterised in that:

There is the easily broken edge of a knife on the outside of the record coil (9).

9. a kind of commodity, it is characterised in that: including RFID electronic label described in one of claim 6 to 8；

The record coil (9) of the RFID electronic label is set at the packaging seal of commodity, and record coil (9) can be sealed in packagingMouth disconnects after being opened.

10. commodity according to claim 9, it is characterised in that:

First tie point (4), the second tie point (5) are respectively arranged at the two sides of packaging seal, the first tie point (4),Connecting line between two tie points (5) disconnects after packaging seal is destroyed.