CN112990416B - High-frequency RFID chip and label with antenna detection port - Google Patents

High-frequency RFID chip and label with antenna detection port Download PDF

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CN112990416B
CN112990416B CN202110434654.5A CN202110434654A CN112990416B CN 112990416 B CN112990416 B CN 112990416B CN 202110434654 A CN202110434654 A CN 202110434654A CN 112990416 B CN112990416 B CN 112990416B
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antenna
detection
contact
rfid chip
contacts
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CN112990416A (en
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江峰
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Sichuan Qiantairen Investment Management 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
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07745—Mounting details of integrated circuit chips
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/0772—Physical layout of the record carrier
    • G06K19/07726—Physical layout of the record carrier the record comprising means for indicating first use, e.g. a frangible layer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G06Q30/018—Certifying business or products
    • G06Q30/0185—Product, service or business identity fraud

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Abstract

The invention discloses a high-frequency RFID chip and a label with an antenna detection port, wherein the RFID chip at least comprises a radio frequency interface circuit unit, a detection unit, a calculation control unit and a storage unit; the label comprises an RFID chip and a plurality of circles of antennas; the invention improves the structures of the existing RFID chip and the tag, constructs a physical binding means between the RFID chip and the commodity while keeping the simple structure of the RFID chip to the maximum extent, and effectively prevents the authentic RFID tag from being repeatedly used for counterfeit commodity.

Description

High-frequency RFID chip and label with antenna detection port
Technical Field
The invention relates to the field of RFID chip architecture, in particular to a high-frequency RFID chip with an antenna detection port and a tag.
Background
With the development of the internet of things and the mobile internet, the applications of the RFID electronic tag and various IC cards become more and more extensive, especially with the overall popularization of smart phones, the radio frequency identification function and the NFC function of the mobile phones are also becoming more and more popular, and the multifunctional integrated application of the RFID electronic tag and the IC card is rapidly increasing. Among them, one of the most widely used fields of RFID tags is merchandise anti-counterfeiting verification.
However, the technical level of counterfeit production is also improved correspondingly at present, and a counterfeiter illegally obtains and copies the encrypted authentication data in the electronic tag through various means such as decryption of the RFID electronic tag, so that the counterfeit electronic tag is counterfeited to achieve the purpose of counterfeit production.
In the RFID anti-counterfeiting application, an important counterfeiting method is that the label is abnormally reused, because the traditional RFID label only has one antenna for exchanging energy and information with the outside, and the RFID chip and the object commodity lack a binding means, which causes a counterfeiting leak that the RFID label is repeatedly applied to the counterfeit commodity after leaving the object, even if the label antenna of the genuine commodity is damaged in the abnormal reusing process, the counterfeiter can conveniently connect the antenna to be used on the counterfeit commodity for counterfeiting.
Therefore, the existing RFID electronic tag needs to be improved to meet the requirement of anti-counterfeiting of the goods.
Disclosure of Invention
The invention aims to provide a high-frequency RFID chip with an antenna detection port, which at least comprises a radio frequency interface circuit unit, a detection unit, a calculation control unit and a storage unit;
the radio frequency interface circuit unit is provided with two antenna end contacts connected with an external antenna; the detection unit has at least one external detection contact; during packaging, the external detection contact is randomly connected with one or more external signal sources, the calculation control unit obtains an electric signal of the detection contact after being processed by the detection unit through reading an instruction, and the electric signal is related to the external signal source connected with the detection contact.
Each external detection contact of the detection unit corresponds to a detection signal processing channel; two input ends of the detection signal processing channel are respectively connected with the detection contact and the potential reference point; and the potential difference between the detection contact of the detection signal processing channel and the potential reference point passes through the signal value of the detection signal processing channel, and is read by the chip calculation control unit through an instruction.
Preferably, the detection signal processing channel at least comprises a rectifying module and an operational amplifying module.
Preferably, the detection signal processing channel at least comprises a rectifying module and a multi-path quantization coding module.
A rectification module of the radio frequency interface circuit unit is marked as an Nth rectification circuit module; the rectification modules of all the detection signal processing channels are respectively marked as a 1 st rectification circuit module … … nth rectification circuit module;
the two radio frequency interface circuits are connected with end contacts of an external antenna and are connected with an Nth rectifying circuit module; the ith external detection contact and one end contact are connected into an ith rectifying circuit module in a plurality of detection contacts numbered from 1 to n, wherein i is 1 and 2 … … n; the output voltage of the ith rectifying circuit module is recorded as a random-machine voltage variable V'ji(ii) a The random machine voltage variable V'jiCorresponding to the potential between the ith detection point and the electric shock of any antenna terminal; the Nth rectification circuit module outputs a relatively constant voltage VDD。
The operational amplification modules of all the detection signal processing channels are respectively recorded as the 1 st operational amplification module … … nth operational amplification module; the output voltage of the N rectifier circuit module is respectively equal to the output voltage V 'of the 1 st and 2 … … N rectifier circuit modules'jiAfter pairing, inputting n operational amplification modules; the n operational amplification modules respectively output the proportion of the random voltage variable corresponding to the random connection of the n external detection points to the relatively constant voltage; n proportional parameters are random signal variables V 'of the RFID chip'jiThe calculation control unit acquires V 'of the channel through an instruction'ji。
The multi-path quantization coding module is represented by VDDThe counter control means turns on the i-th detection point signal V 'by a command with Vss as a common ground for a reference potential'jiTo the multi-path quantization coding module, after A/D quantization coding of the multi-path quantization coding module, V is obtainedDDIs a digitized V 'of a reference potential'jiThe calculation control unit acquires a random voltage variable V 'corresponding to random connection of the external detection point of the channel by an instruction'ji。
The n operational amplification modules are operational amplifiers; one input end of the ith operational amplifier is connected with Vss output by the Nth rectifying circuit module, the other input end of the ith operational amplifier is connected with Vss output by the ith rectifying circuit module, and the ground end of the ith operational amplifier is connected with GND of all the rectifying circuit modules in common.
The detection unit is a high impedance input.
The radio frequency interface circuit unit is connected with an external antenna; the external antenna is a spiral loop antenna; the loop antenna is a component that provides the external signal source;
the external antenna is provided with two end contacts and a plurality of middle contacts; these intermediate contacts are located between the two end contacts;
the potential reference point of the detection signal processing channel in the chip is connected with the middle contact or one of the two end contacts and is used as the potential of the potential reference point of the detection signal processing channel; and during packaging, the detection contact is randomly connected with any middle contact or end contact, so that the signal value of the potential difference between the detection contact and the potential reference point after passing through the detection signal processing channel is read by a chip calculation control unit through an instruction to become a random signal variable of the RFID chip.
The radio frequency interface circuit unit is connected with an external antenna; the external antenna is a spiral loop antenna; the loop antenna is a component that provides the external signal source;
the antenna is provided with two end contacts and a plurality of middle contacts; these intermediate contacts are located between the two end contacts;
the potential reference point of the detection signal processing channel in the chip is respectively connected with one of the two end contacts and used as the potential of the potential reference point of the detection signal processing channel; and during packaging, the detection contact is randomly connected with any middle contact or end contact, so that the signal value of the potential difference between the detection contact and the potential reference point after passing through the detection signal processing channel is read by a chip calculation control unit through an instruction to become a random signal variable of the RFID chip.
The electric signal variable is a potential signal or a voltage signal.
The high-frequency RFID chip also comprises a plurality of electric conductors positioned in the RFID chip;
one antenna end contact and part of the middle contact are positioned on one side in the RFID chip, and the other antenna end contact and the other part of the middle contact are positioned on the other side in the RFID chip;
two contacts positioned on different sides of the RFID chip are externally connected with a circle of antenna;
one conductor is connected with any two middle contacts or end contacts positioned on different sides of the RFID chip, so that the multi-turn antenna positioned outside the chip is communicated inside the RFID chip, and the spiral loop antenna is formed.
The detection contacts are connected to external pins of the high-frequency RFID chip;
when the chip is packaged into a label, the chip detection contact pin is randomly connected with a middle contact or an antenna end contact of an external spiral antenna through a conductor, so that a detection potential is formed between the detection contact and the contact of any antenna end; the value of the sense potential is related to the number of antenna turns between the sense contact and the antenna end contact.
When the chip is packaged into a label, the chip detection contact pin is randomly connected with a middle contact or an antenna end contact of an external spiral antenna through a conductor, so that a detection potential I is formed between the detection contact and one antenna end contact, and a detection potential II is formed between the detection contact and the other antenna end contact.
The number of turns of the spiral loop antenna is recorded as m, two end points of the spiral loop antenna are antenna end contacts, and the value range of the detection potential is [0, V ]DD]；
Wherein, when the detection contact is randomly connected with one antenna end contact as the potential reference point, the detection potential value between the antenna end contact and the detection contact is 0, and the detection potential value between the antenna end contact and the other antenna end contact is VDD；
Value V 'of the detection potential formed when the detection contact is randomly connected with one of the intermediate contacts or the antenna terminal contact'jiAnd VDDIs recorded as a random signal variable V'jiOf random signal variable V'jiEqual to the relative ratio of the number r of turns of the antenna between the middle contact and the antenna end contact as the potential reference point to the total number m of turns of the antenna; 0 is less than or equal to V'ji≤1，V''ji=V'ji/VDD=r/m。
The ratio parameter is binary coded and can be identified by the calculation control unit.
The RFID chip is a high frequency RFID chip. The operating frequency was 13.56 MHz.
Adopt a label of high frequency RFID chip with antenna detection port, its characterized in that: the RFID tag comprises a tag of a high-frequency RFID chip with an antenna detection port and a plurality of circles of antennas;
the RFID chip and the antenna are packaged and distributed in the electronic tag;
the RFID chip is provided with 2 antenna end contacts and a plurality of intermediate contacts;
two ends of each circle of antenna are connected with the antenna end contact or the middle contact; each middle contact and each antenna end contact are only connected with one end of one circle of antenna;
the multiple circles of antennas are connected into an integral spiral annular antenna, and two ends of the spiral annular antenna are respectively connected to 2 antenna end contacts; during packaging, the test contacts are randomly connected to an intermediate contact or antenna end contact.
After the RFID chip is packaged into an RFID label, when the commodity leaves a factory, scanning the RFID chip and recording a random signal variable or a random digital signal variable in an external database; when the commodity is started, the connection line of the detection point is damaged, and when the anti-counterfeiting verification is carried out, if the random signal variable or the random digital signal variable of the scanned RFID label is different from that of the scanned RFID label when the commodity leaves a factory, the commodity is judged to be forged.
The technical effect of the invention is undoubtedly that the invention improves the structure of the existing RFID chip and label, and effectively prevents the repeated use of the genuine RFID chip and label for counterfeit goods while keeping the simple structure of the RFID chip to the maximum extent.
Drawings
FIG. 1 is a high frequency RFID chip package structure with antenna detection port
FIG. 2 is a schematic diagram of a high frequency RFID chip package with an antenna detection port.
FIG. 3 is a schematic diagram of a high frequency RFID chip detection unit with an operational amplifier module and a radio frequency interface circuit unit;
FIG. 4 is a schematic diagram of a high frequency RFID chip detection unit with a multi-way quantization encoding module and a radio frequency interface circuit unit;
FIG. 5 is a schematic view of a detection contact connection I;
fig. 6 is a detection contact connection diagram II.
Detailed Description
The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the technical idea of the invention, and the technical knowledge and the conventional means in the field are at least included in the protection scope of the invention.
Example 1:
referring to fig. 1 to 6, a high frequency RFID chip with an antenna detection port at least includes a radio frequency interface circuit unit, a detection unit, a calculation control unit, and a storage unit;
the radio frequency interface circuit unit is provided with two antenna end contacts connected with an external antenna; the detection unit has at least one external detection contact; during packaging, the external detection contact is randomly connected with one or more external signal sources, the calculation control unit obtains an electric signal of the detection contact after being processed by the detection unit through reading an instruction, and the electric signal is related to the external signal source connected with the detection contact.
Each external detection contact of the detection unit corresponds to a detection signal processing channel; two input ends of the detection signal processing channel are respectively connected with the detection contact and the potential reference point; and the potential difference between the detection contact of the detection signal processing channel and the potential reference point passes through the signal value of the detection signal processing channel, and is read by the chip calculation control unit through an instruction.
The detection signal processing channel at least comprises a rectifying module and an operational amplifying module.
A rectification module of the radio frequency interface circuit unit is marked as an Nth rectification circuit module; the rectification modules of all the detection signal processing channels are respectively marked as a 1 st rectification circuit module … … nth rectification circuit module;
the two radio frequency interface circuits are connected with end contacts of an external antenna and are connected with an Nth rectifying circuit module; the ith external detection contact and one end contact are connected into an ith rectifying circuit module in a plurality of detection contacts numbered from 1 to n, wherein i is 1 and 2 … … n; the output voltage of the ith rectifying circuit module is recorded as a random-machine voltage variable V'ji(ii) a The random machine voltage variable V'jiCorresponding to the potential between the ith detection point and the electric shock of any antenna terminal; the Nth rectification circuit module outputs a relatively constant voltage VDD。
The operational amplification modules of all the detection signal processing channels are respectively recorded as the 1 st operational amplification module … … nth operational amplification module; the output voltage of the N rectifier circuit module is respectively equal to the output voltage V 'of the 1 st and 2 … … N rectifier circuit modules'jiAfter pairing, inputting n operational amplification modules; the n operational amplification modules respectively output the proportion of the random voltage variable corresponding to the random connection of the n external detection points to the relatively constant voltage; n proportional parameters are random signal variables V 'of the RFID chip'jiThe calculation control unit acquires V 'of the channel through an instruction'ji。
The multi-path quantization coding module is represented by VDDIs used as a reference potential toVss is common ground, and the calculation control unit instructs to turn on the i-th detection point signal V'jiTo the multi-path quantization coding module, after A/D quantization coding of the multi-path quantization coding module, V is obtainedDDIs a digitized V 'of a reference potential'jiThe calculation control unit acquires a random voltage variable V 'corresponding to random connection of the external detection point of the channel by an instruction'ji。
The n operational amplification modules are operational amplifiers; one input end of the ith operational amplifier is connected with Vss output by the Nth rectifying circuit module, the other input end of the ith operational amplifier is connected with Vss output by the ith rectifying circuit module, and the ground end of the ith operational amplifier is connected with GND of all the rectifying circuit modules in common.
The detection unit is a high impedance input.
The radio frequency interface circuit unit is connected with an external antenna; the external antenna is a spiral loop antenna; the loop antenna is a component that provides the external signal source;
the external antenna is provided with two end contacts and a plurality of middle contacts; these intermediate contacts are located between the two end contacts;
the potential reference point of the detection signal processing channel in the chip is connected with the middle contact or one of the two end contacts and is used as the potential of the potential reference point of the detection signal processing channel; and during packaging, the detection contact is randomly connected with any middle contact or end contact, so that the signal value of the potential difference between the detection contact and the potential reference point after passing through the detection signal processing channel is read by a chip calculation control unit through an instruction to become a random signal variable of the RFID chip.
The electric signal variable is a potential signal or a voltage signal.
The high-frequency RFID chip also comprises a plurality of electric conductors positioned in the RFID chip;
one antenna end contact and part of the middle contact are positioned on one side in the RFID chip, and the other antenna end contact and the other part of the middle contact are positioned on the other side in the RFID chip;
two contacts positioned on different sides of the RFID chip are externally connected with a circle of antenna;
one conductor is connected with any two middle contacts or end contacts positioned on different sides of the RFID chip, so that the multi-turn antenna positioned outside the chip is communicated inside the RFID chip, and the spiral loop antenna is formed.
The detection contacts are connected to external pins of the high-frequency RFID chip;
when the chip is packaged into a label, the chip detection contact pin is randomly connected with a middle contact or an antenna end contact of an external spiral antenna through a conductor, so that a detection potential is formed between the detection contact and the contact of any antenna end; the value of the sense potential is related to the number of antenna turns between the sense contact and the antenna end contact.
When the chip is packaged into a label, the chip detection contact pin is randomly connected with a middle contact or an antenna end contact of an external spiral antenna through a conductor, so that a detection potential I is formed between the detection contact and one antenna end contact, and a detection potential II is formed between the detection contact and the other antenna end contact. The sensed potential value I, II is related to the number of antenna turns between the sense contact and the antenna end contact.
The number of turns of the spiral loop antenna is recorded as m, two end points of the spiral loop antenna are antenna end contacts, and the value range of the detection potential is [0, V ]DD](ii) a The detection potential is a continuous signal.
Wherein, when the detection contact is randomly connected with one antenna end contact as the potential reference point, the detection potential value between the antenna end contact and the detection contact is 0, and the detection potential value between the antenna end contact and the other antenna end contact is VDD；
Value V 'of the detection potential formed when the detection contact is randomly connected with one of the intermediate contacts or the antenna terminal contact'jiAnd VDDIs recorded as a random signal variable V'jiOf random signal variable V'jiEqual to the relative ratio of the number r of turns of the antenna between the middle contact and the antenna end contact as the potential reference point to the total number m of turns of the antenna; 0 is less than or equal to V'ji≤1，V''ji=V'ji/VDDAnd (d) = r/m. Ratio ofAn example parameter is a discrete signal.
The proportion parameters are subjected to binary coding and can be identified by a calculation control unit and a scanning device. The accuracy of the proportional parameters is set according to actual requirements.
The RFID chip is a high frequency RFID chip. The operating frequency was 13.56 MHz.
After the RFID chip is packaged into an RFID label, when the commodity leaves a factory, scanning the RFID chip and recording a random electric signal variable or a random digital signal variable in an external database; when the commodity is started, the connection line of the detection point is damaged, and when the anti-counterfeiting verification is carried out, if the random electric signal variable or the random digital signal variable of the scanned RFID label is different from that of the scanned RFID label when the commodity leaves a factory, the commodity is judged to be forged.
Example 2:
referring to fig. 1, 2 and 4, a high frequency RFID chip with an antenna detection port at least includes a radio frequency interface circuit unit, a detection unit, a calculation control unit and a storage unit;
the radio frequency interface circuit unit is provided with two antenna end contacts connected with an external antenna; the detection unit has at least one external detection contact; during packaging, the external detection contact is randomly connected with one or more external signal sources, the calculation control unit obtains an electric signal of the detection contact after being processed by the detection unit through reading an instruction, and the electric signal is related to the external signal source connected with the detection contact.
Each external detection contact of the detection unit corresponds to a detection signal processing channel; two input ends of the detection signal processing channel are respectively connected with the detection contact and the potential reference point; and the potential difference between the detection contact of the detection signal processing channel and the potential reference point passes through the signal value of the detection signal processing channel, and is read by the chip calculation control unit through an instruction.
The detection signal processing channel at least comprises a rectifying module and a multi-path quantization coding module.
A rectification module of the radio frequency interface circuit unit is marked as an Nth rectification circuit module; integration of all detection signal processing channelsThe flow modules are respectively marked as a 1 st rectifier circuit module … … nth rectifier circuit module; the Nth rectification circuit module outputs a relatively constant voltage VDD。
The operational amplification modules of all the detection signal processing channels are respectively recorded as the 1 st operational amplification module … … nth operational amplification module; the output voltage of the N rectifier circuit module is respectively equal to the output voltage V 'of the 1 st and 2 … … N rectifier circuit modules'jiAfter pairing, inputting n operational amplification modules; the n operational amplification modules respectively output the proportion of the random voltage variable corresponding to the random connection of the n external detection points to the relatively constant voltage; n proportional parameters are random signal variables V 'of the RFID chip'jiThe calculation control unit acquires V 'of the channel through an instruction'ji。
The multi-path quantization coding module is represented by VDDThe counter control means turns on the i-th detection point signal V 'by a command with Vss as a common ground for a reference potential'jiTo the multi-path quantization coding module, after A/D quantization coding of the multi-path quantization coding module, V is obtainedDDIs a digitized V 'of a reference potential'jiThe calculation control unit acquires a random voltage variable V 'corresponding to random connection of the external detection point of the channel by an instruction'ji。
The detection unit is a high impedance input.
The radio frequency interface circuit unit is connected with an external antenna; the external antenna is a spiral loop antenna; the loop antenna is a component that provides the external signal source;
the antenna is provided with two end contacts and a plurality of middle contacts; these intermediate contacts are located between the two end contacts;
the potential reference point of the detection signal processing channel in the chip is respectively connected with one of the two end contacts and used as the potential of the potential reference point of the detection signal processing channel; and during packaging, the detection contact is randomly connected with any middle contact or end contact, so that the signal value of the potential difference between the detection contact and the potential reference point after passing through the detection signal processing channel is read by a chip calculation control unit through an instruction to become a random signal variable of the RFID chip.
The electric signal variable is a potential signal or a voltage signal.
The high-frequency RFID chip also comprises a plurality of electric conductors positioned in the RFID chip;
one antenna end contact and part of the middle contact are positioned on one side in the RFID chip, and the other antenna end contact and the other part of the middle contact are positioned on the other side in the RFID chip;
two contacts positioned on different sides of the RFID chip are externally connected with a circle of antenna;
one conductor is connected with any two middle contacts or end contacts positioned on different sides of the RFID chip, so that the multi-turn antenna positioned outside the chip is communicated inside the RFID chip, and the spiral loop antenna is formed.
The RFID chip is a high frequency RFID chip. The operating frequency was 13.56 MHz.
After the RFID chip is packaged into an RFID label, when the commodity leaves a factory, scanning the RFID chip and recording a random electric signal variable or a random digital signal variable in an external database; when the commodity is started, the connection line of the detection point is damaged, and when the anti-counterfeiting verification is carried out, if the random electric signal variable or the random digital signal variable of the scanned RFID label is different from that of the scanned RFID label when the commodity leaves a factory, the commodity is judged to be forged.
Example 3:
a high-frequency RFID chip with an antenna detection port at least comprises a radio frequency interface circuit unit, a detection unit, a calculation control unit and a storage unit;
the radio frequency interface circuit unit is provided with two antenna end contacts connected with an external antenna; the detection unit has at least one external detection contact; when packaging, the external detection contact is randomly connected with one or more external signal sources, and the calculation control unit obtains the electric signals of the detection contact through reading instructions, wherein the electric signals are related to the external signal sources connected with the detection contact.
Example 4:
the main structure of the high-frequency RFID chip with the antenna detection port is shown in embodiment 3, wherein the calculation control unit reads an electric signal of the detection contact after being processed by the detection unit through an instruction. The detection unit is a high impedance input, and has little influence on the external detected contact.
Example 5:
a high frequency RFID chip with antenna detection port, the main structure is seen in embodiment 3, wherein, the radio frequency interface circuit unit connects with the external antenna; the antenna is a spiral annular antenna; the loop antenna is a component that provides the external signal source;
the external antenna is provided with two end contacts and a plurality of middle contacts; these intermediate contacts are located between the two end contacts;
the potential reference point of the detection signal processing channel in the chip is connected with the middle contact or one of the two end contacts and is used as the potential of the potential reference point of the detection signal processing channel; the potential reference point potential is the potential between the two end contacts. And during packaging, the detection contact is randomly connected with any middle contact or end contact, so that the signal value of the potential difference between the detection contact and the potential reference point after passing through the detection signal processing channel is read by a chip calculation control unit through an instruction to become a random signal variable of the RFID chip.
The electric signal variable is a potential signal or a voltage signal.
Example 6:
a high-frequency RFID chip with an antenna detection port has a main structure shown in an embodiment 3, wherein a radio frequency interface circuit unit is connected with an external antenna; the external antenna is a spiral loop antenna; the loop antenna is a component that provides the external signal source;
the antenna is provided with two end contacts and a plurality of middle contacts; these intermediate contacts are located between the two end contacts;
the potential reference point of the detection signal processing channel in the chip is respectively connected with one of the two end contacts and used as the potential of the potential reference point of the detection signal processing channel; the potential reference point potential is the potential between the two end contacts.
And during packaging, the detection contact is randomly connected with any middle contact or end contact, so that the signal value of the potential difference between the detection contact and the potential reference point after passing through the detection signal processing channel is read by a chip calculation control unit through an instruction to become a random signal variable of the RFID chip.
Example 7:
a high-frequency RFID chip with an antenna detection port has a main structure shown in an embodiment 3, and a detection signal processing channel at least comprises a rectifying module and an operational amplification module.
The operational amplification modules of all the detection signal processing channels are respectively recorded as the 1 st operational amplification module … … nth operational amplification module; the output voltage of the N rectifier circuit module is respectively equal to the output voltage V 'of the 1 st and 2 … … N rectifier circuit modules'jiAfter pairing, inputting n operational amplification modules; the n operational amplification modules respectively output the proportion of the random voltage variable corresponding to the random connection of the n external detection points to the relatively constant voltage; n proportional parameters are random signal variables V 'of the RFID chip'jiThe calculation control unit acquires V 'of the channel through an instruction'ji。
Example 8:
a high-frequency RFID chip with an antenna detection port has the main structure shown in embodiment 3,
the detection signal processing channel at least comprises a rectifying module and a multi-path quantization coding module.
A rectification module of the radio frequency interface circuit unit is marked as an Nth rectification circuit module; the rectification modules of all the detection signal processing channels are respectively marked as a 1 st rectification circuit module … … nth rectification circuit module;
the two radio frequency interface circuits are connected with end contacts of an external antenna and are connected with an Nth rectifying circuit module; the ith external detection contact and one end contact are connected into an ith rectifying circuit module in a plurality of detection contacts numbered from 1 to n, wherein i is 1 and 2 … … n; the output voltage of the ith rectifying circuit module is recorded as a random-machine voltage variable V'ji(ii) a The above-mentionedSlave motor voltage variable V'jiCorresponding to the potential between the ith detection point and the electric shock of any antenna terminal; the Nth rectification circuit module outputs a relatively constant voltage VDD。
The multi-path quantization coding module is represented by VDDThe counter control means turns on the i-th detection point signal V 'by a command with Vss as a common ground for a reference potential'jiTo the multi-path quantization coding module, after A/D quantization coding of the multi-path quantization coding module, V is obtainedDDIs a digitized V 'of a reference potential'jiThe calculation control unit acquires a random voltage variable V 'corresponding to random connection of the external detection point of the channel by an instruction'ji。
Example 9:
the main structure of a high-frequency RFID chip with an antenna detection port is shown in an embodiment 3, wherein the RFID chip is a high-frequency RFID chip. The operating frequency was 13.56 MHz.
Example 10:
a high-frequency RFID chip with an antenna detection port has a main structure shown in an embodiment 3, wherein all rectification modules are respectively marked as an Nth rectification circuit module and a 1 st rectification circuit module … … nth rectification circuit module;
two end contacts are connected into an Nth rectifying circuit module, and among a plurality of detection contacts numbered from 1 to N, an ith external detection contact and one end contact are connected into an ith rectifying circuit module, wherein i is 1 and 2 … … N; the output voltage of the 1 st and 2 … … n rectifier circuit modules is n random voltage variables; the Nth rectification circuit module outputs a relatively constant voltage.
Example 11:
a high-frequency RFID chip with an antenna detection port has the main structure shown in embodiment 3, wherein all operational amplification modules are respectively marked as a No. 1 operational amplification module … … No. n operational amplification module; the output voltage of the N rectifier circuit module is respectively equal to the output voltage V 'of the 1 st and 2 … … N rectifier circuit modules'jiAfter pairing, inputting n operational amplification modules; the n operational amplification modules respectively output the proportion of the n random electromechanical voltage variables to the relatively constant voltage; n isThe proportional parameter is a random signal variable V 'of the RFID chip'jiThe calculation control unit acquires V 'of the channel through an instruction'ji。
Example 12:
a high-frequency RFID chip with an antenna detection port has a main structure shown in an embodiment 3, wherein two end contacts are two end heads of an antenna; two end contacts are connected with a capacitor in parallel to form an oscillating circuit; the nth rectifier circuit module and the 1 st rectifier circuit module … … have high impedance.
Example 13:
a high-frequency RFID chip with an antenna detection port has a main structure shown in an embodiment 3, wherein the n operational amplification modules are operational amplifiers; one input end of the ith operational amplifier is connected with Vss output by the Nth rectifying circuit module, the other input end of the ith operational amplifier is connected with Vss output by the ith rectifying circuit module, and the ground end of the ith operational amplifier is connected with GND of all the rectifying circuit modules in common.
Example 14:
a high-frequency RFID chip with an antenna detection port has a main structure shown in an embodiment 3, wherein after the RFID chip is packaged into an RFID label, when a commodity leaves a factory, the RFID chip is scanned and random electric signal variables or random digital signal variables are recorded in an external database; when the commodity is started, the connection line of the detection point is damaged, and when the anti-counterfeiting verification is carried out, if the random electric signal variable or the random digital signal variable of the scanned RFID label is different from that of the scanned RFID label when the commodity leaves a factory, the commodity is judged to be forged.
Example 15:
a high frequency RFID chip with antenna detection port, the main structure is seen in embodiment 3, wherein, several detection contacts are connected to the external pin of the high frequency RFID chip;
when the chip is packaged into a label, the chip detection contact pin is randomly connected with a middle contact or an antenna end contact of an external spiral antenna through a conductor, so that a detection potential is formed between the detection contact and the contact of any antenna end; the value of the sense potential is related to the number of antenna turns between the sense contact and the antenna end contact.
The number of turns of the spiral loop antenna is recorded as m, two end points of the spiral loop antenna are antenna end contacts, and the value range of the detection potential is [0, V ]DD]；
Wherein, when the detection contact is randomly connected with one antenna end contact as the potential reference point, the detection potential value between the antenna end contact and the detection contact is 0, and the detection potential value between the antenna end contact and the other antenna end contact is VDD；
Value V 'of the detection potential formed when the detection contact is randomly connected with one of the intermediate contacts or the antenna terminal contact'jiAnd VDDIs recorded as a proportional parameter V'jiThe proportional parameter is equal to the relative ratio of the number r of turns of the antenna between the middle contact and the antenna end contact serving as the potential reference point to the total number m of turns of the antenna; 0 is less than or equal to V'ji≤1，V''ji=V'ji/VDD=r/m。
The ratio parameter is binary coded and can be identified by the calculation control unit.
Example 16:
a high frequency RFID chip with antenna detection port, the main structure is seen in embodiment 3, wherein, several detection contacts are connected to the external pin of the high frequency RFID chip;
when the chip is packaged into a label, the chip detection contact pin is randomly connected with a middle contact or an antenna end contact of an external spiral antenna through a conductor, so that a detection potential I is formed between the detection contact and one antenna end contact, and a detection potential II is formed between the detection contact and the other antenna end contact.
The number of turns of the spiral loop antenna is recorded as m, two end points of the spiral loop antenna are antenna end contacts, and the value range of the detection potential is [0, V ]DD]；
Wherein, when the detection contact is randomly connected with one antenna end contact as the potential reference point, the detection potential value between the antenna end contact and the detection contact is 0, and the detection potential value between the antenna end contact and the other antenna end contact is VDD；
Detecting contact randomnessValue of detected potential V 'formed when connected to an intermediate or antenna end contact'jiAnd VDDIs recorded as a proportional parameter V'jiThe proportional parameter is equal to the relative ratio of the number r of turns of the antenna between the middle contact and the antenna end contact serving as the potential reference point to the total number m of turns of the antenna; 0 is less than or equal to V'ji≤1，V''ji=V'ji/VDD=r/m。
The ratio parameter is binary coded and can be identified by the calculation control unit.
Example 17:
a high-frequency RFID chip with an antenna detection port at least comprises a radio frequency interface circuit unit, a detection unit, a calculation control unit and a storage unit;
the radio frequency interface circuit unit is provided with 2 antenna end contacts and k transfer connecting contacts.
Wherein, the antenna end contacts are respectively marked as antenna end contact T0 and antenna end contact T1; the transit contacts are marked as contacts L1, … … and Lk; k is an even number.
When packaging, the RFID chip and the spiral annular antenna are arranged in the electronic tag;
the circles of the antenna are distributed from outside to inside in sequence and are not intersected outside the RFID chip.
The contact L1, the contacts L3, … …, and the contact Lk-1 are located on the same side as the antenna end contact T1, and the contact L2, the contacts L4, … …, and the contact Lk are located on the same side as the antenna end contact T0.
Each transfer connecting contact and each antenna end contact are only connected with one end of any circle of antenna;
specifically, one end of the 1 st turn of the antenna is connected with the antenna end contact T0, and the other end is connected with the relay connection contact L1;
one end of the 2 nd turn of the antenna is connected with a relay connection contact L2, and the other end is connected with a relay connection contact L3.
……
The first of the antennauOne end of the ring is connected with a transfer connecting contact L2（u-1）The other end is connected with a transfer connecting contact L2u-1。2≤u＜ k。
One end of the kth circle of the antenna is connected with a transfer connecting contact Lk, and the other end of the kth circle of the antenna is connected with an antenna end contact T1;
two transit connection contacts positioned at different sides are connected through a conductor, so that the antenna is connected into a continuous integral spiral annular integral antenna which is marked as a spiral annular antenna; and two ends of the spiral annular antenna are respectively connected with the 2 antenna end contacts. The spiral annular antenna is an external signal source and is provided with two end contacts and a plurality of middle contacts; these intermediate contacts are located between two end contacts, which are contacts that connect 2 antenna end contacts. The two end contacts are two end heads of the antenna; two end contacts are connected with a capacitor in parallel to form an oscillating circuit;
wherein, the potentials of the antenna terminal contact T0 and the antenna terminal contact T1 are inputted into the Nth rectification circuit module. The rectifier circuit modules in this embodiment are all full-wave rectifier circuits, and each full-wave rectifier circuit at least includes a rectifier bridge composed of four diodes and a capacitor connected in parallel with the rectifier bridge. The rectifier circuit module has a high impedance.
The detection unit is provided with M external detection contacts, which are respectively marked as J1, J2, … and JM; the electric potential of one of the external detection contact and the end contact and the middle contact of the spiral annular antenna is input into a rectifier circuit module, and the number of the external detection contacts connected with the rectifier circuit module is n (n is more than or equal to 1 and less than or equal to M).
The rectifier circuit modules connected with the external detection contact are respectively marked as a 1 st rectifier circuit module … … nth rectifier circuit module;
the RFID chip also at least comprises n operational amplification modules. The n operational amplification modules are operational amplifiers; one input end of the ith operational amplifier is connected with the output of the Nth rectifying circuit module, the other input end of the ith operational amplifier is connected with the output of the ith rectifying circuit module, and the grounding end of the ith operational amplifier is connected with GND (ground) of all the rectifying circuit modules.
And the ith operational amplifier compares the output of the Nth rectifying circuit module with the output of the ith rectifying circuit module and outputs a random signal variable. The random signal variable is the ratio of the sums.
The calculation control unit reads the random signal variable output by each operational amplifier and stores the random signal variable in the information set of the storage unit.
After the RFID chip is packaged into an RFID label; when the RFID reader-writer and the RFID chip carry out reading and writing operations, the information generated by the calculation control unit is transmitted and exchanged with the RFID reader through the external antenna of the radio frequency interface circuit unit.
The RFID chip is a high frequency RFID chip. The operating frequency was 13.56 MHz.
After the RFID chip is packaged into an RFID label, scanning the RFID chip and recording the random signal variable in an external database when the commodity leaves a factory; and when the anti-counterfeiting verification is carried out, if the random signal variable of the scanned RFID label is different from the random signal variable of the scanned RFID label when the scanned RFID label leaves the factory, the commodity is judged to be counterfeited.
Example 18:
referring to fig. 3, a high frequency RFID chip with an antenna detection port, the main structure is shown in embodiment 14, wherein, the potential Vj1 of the external detection contact J1 is inputted into the 1 st rectifier circuit module, and the potential of the terminal contact T0 is inputted into the 1 st rectifier circuit module with reference to the point potential Vc 0.
The 1 st rectifier circuit module outputs an electric signal to be input into the 1 st operational amplifier.
The 1 st operational amplifier compares the voltage signal output by the 1 st rectifier circuit module with the voltage signal output by the N rectifier circuit module and outputs a random signal variable V'j1。
The potential Vjn of the external detection contact Jn is input to the n-th rectifier circuit module, and the potential reference point potential Vc1 of the terminal contact T1 is input to the n-th rectifier circuit module.
The output electric signal of the nth rectifying circuit module is input into the nth operational amplifier.
The nth operational amplifier compares the voltage signal output by the nth rectification circuit module with the voltage signal output by the nth rectification circuit module and outputs a random signal variable V'jn。
The calculation control unit reads the random signal variableV'j1And V'jnAnd stored in the memory unit. Random signal variable V'j1And V'jnFor information transmission and exchange with the RFID reader.
Example 19:
a high frequency RFID chip with antenna test port, the main structure is shown in example 14, wherein the external test contacts are randomly connected to the terminal contacts in the following manner: the external detection contact is electrically connected with the antenna end contact T1 and the antenna end contact T0 randomly inside the high-frequency RFID chip, so that the connection with the end contacts is realized.
The mode that the external detection contact is randomly connected with the middle contact is as follows: the external detection contact is electrically connected with the transfer connecting contact randomly in the high-frequency RFID chip, so that the connection with the intermediate contact is realized.
Example 20:
the main structure of a high-frequency RFID chip with an antenna detection port is shown in an embodiment 15, wherein the external detection contact is electrically connected with an antenna end contact T1, an antenna end contact T0 and a transfer connecting contact randomly in the following ways: the external detection contact, the antenna end contact T1, the antenna end contact T0 and the transit connection contact are all located on the outer surface of the high-frequency RFID chip and are called specific joint surfaces.
When the specific joint surface is randomly attached to an external member located on a commercial product, all or part of the external detection contacts are randomly connected with the antenna end contact T1, the antenna end contact T0 and the relay connection contact. At this time, the calculation control unit reads the random signal variable output from the operational amplifier and stores it in the information set of the storage unit.
When the external part is attached again after being separated from the specific joint surface, all or part of the external detection contacts are randomly reconnected with the antenna end contact T1, the antenna end contact T0 and the relay connection contact, and the calculation control unit reads the random signal variable output by the operational amplifier again and stores the random signal variable in the information set of the storage unit.
After the random signal variation is formed as described above, if the application system reads that the random signal variation of the electronic tag is not the random signal variation, the application system will assume that the external component and the specific bonding surface have been separated as described above.
Example 21:
the main structure of a high-frequency RFID chip with an antenna detection port is shown in an embodiment 15, wherein the external detection contact is electrically connected with an antenna end contact T1, an antenna end contact T0 and a transfer connecting contact randomly in the following ways: when the high-frequency RFID chip is packaged, the external detection contact is randomly connected with the antenna end contact T1, the antenna end contact T0 and the relay connection contact through the conductive wires. At this time, the calculation control unit reads the random signal variable output from the operational amplifier and stores it in the information set of the storage unit.
The conductive wires are strongly adhered with the commodities. When the high-frequency RFID label is torn off from the commodity, the conductive wire is torn off, so that the external detection contact is disconnected from the antenna end contact T1, the antenna end contact T0 and the transfer connecting contact randomly through the conductive wire, the random signal variable output by the operational amplifier is read again by the computing control unit, and the random signal variable is stored in the information set of the storage unit.
After the random signal variation is formed as described above, if the application system reads that the random signal variation of the electronic tag is not the random signal variation, the application system will assume that the external component and the specific bonding surface have been separated as described above.
Example 22:
a high-frequency RFID chip with an antenna detection port at least comprises a radio frequency interface circuit unit, a detection unit, a calculation control unit and a storage unit;
the radio frequency interface circuit unit is provided with 2 antenna end contacts and 6 transfer connecting contacts.
Wherein, the antenna end contacts are respectively marked as antenna end contact T1 and antenna end contact T0; the transit connection contacts are marked as a contact L1, a contact L2, a contact L3, a contact L4, a contact L5 and a contact L6;
when packaging, the RFID chip and the antenna are arranged in the electronic tag;
the circles of the antenna are distributed from outside to inside in sequence and are not intersected outside the RFID chip;
the contact L1, the contact L3, the contact L5, and the antenna end contact T1 are on the same side. The contact L2, the contact L4, the contact L5, and the antenna end contact T0 are on the same side.
One end of the 1 st circle of the antenna is connected with an antenna end contact T0, and the other end of the antenna is connected with a contact L1; the 2 nd turn of the antenna is connected at one end to contact L2 and at the other end to contact L3. One end of the 3 rd turn of the antenna is connected with a contact L4, and the other end of the antenna is connected with a contact L5; the 4 th turn of the antenna has one end connected to contact L6 and the other end connected to antenna end contact T1.
The contact L1 is connected with the contact L2 through an electric conductor;
the contact L3 is connected with the contact L4 through an electric conductor;
the contact L5 is connected with the contact L6 through an electric conductor;
through the connection, the 4-turn antenna is connected into a continuous integral spiral annular integral antenna which is marked as a spiral annular antenna; and two ends of the spiral annular antenna are respectively connected with the 2 antenna end contacts. The spiral loop antenna is an external signal source and is provided with two end contacts and 6 middle contacts; these intermediate contacts are located between two end contacts, which are contacts that connect 2 antenna end contacts. The two end contacts are two end heads of the antenna; two end contacts are connected with a capacitor in parallel to form an oscillating circuit;
wherein, the potentials of the antenna terminal contact T0 and the antenna terminal contact T1 are inputted into the Nth rectification circuit module. The rectifier circuit modules in this embodiment are all full-wave rectifier circuits, and each full-wave rectifier circuit at least includes a rectifier bridge composed of four diodes and a capacitor connected in parallel with the rectifier bridge. The rectifier circuit module has a high impedance.
The detection unit has 2 external detection contacts, which are respectively marked as J1 and J2; the external detection contact J1 is randomly connected to the middle contact L3 of the helical loop antenna, so that the external detection contact J1 generates a potential Vj 1. The external detection contact J1 inputs the potential Vj1 into the 1 st rectifier circuit model.
The RFID chip also comprises at least one operational amplification moduleAnd (5) blocking. The operational amplification module is an operational amplifier; one input end of the operational amplifier is connected with Vss output by the Nth rectifying circuit moduleNThe other input end is connected with Vss output by the rectifier circuit module 11And the grounding end is grounded with GND of all the rectifier circuit modules.
And the operational amplifier compares the electric signal output by the Nth rectifying circuit module with the electric signal output by the 1 st rectifying circuit module and outputs a random signal variable. The value standard of the random signal variable is as follows: when the electrical signal output by the Nth rectifying circuit module is greater than the electrical signal output by the 1 st rectifying circuit module, the random signal variable =1, otherwise, the random signal variable = 0. In this embodiment, since the external detection contact J1 is connected to the relay connection contact L3, the random signal variable = 0.
The calculation control unit reads the random signal variable output by the operational amplifier and stores the random signal variable in the information set of the storage unit.
The RFID chip is a high frequency RFID chip. The operating frequency was 13.56 MHz.
After the RFID chip is packaged into an RFID label, when the commodity leaves a factory, scanning the RFID chip and recording a random electric signal variable or a random digital signal variable in an external database; when the commodity is started, the connection line of the detection point is damaged, and when the anti-counterfeiting verification is carried out, if the random electric signal variable or the random digital signal variable of the scanned RFID label is different from that of the scanned RFID label when the commodity leaves a factory, the commodity is judged to be forged.
Example 23:
a high-frequency RFID chip with an antenna detection port comprises a radio frequency interface circuit unit, a detection unit, a calculation control unit and a storage unit;
the radio frequency interface circuit unit is provided with 2 antenna end contacts and k transfer connecting contacts.
Wherein, the antenna end contacts are respectively marked as antenna end contact T0 and antenna end contact T1; the transit contacts are marked as contacts L1, … … and Lk; k is an even number.
When packaging, the RFID chip and the spiral annular antenna are arranged in the electronic tag;
the circles of the antenna are distributed from outside to inside in sequence and are not intersected outside the RFID chip.
The contact L1, the contacts L3, … …, and the contact Lk-1 are located on the same side as the antenna end contact T1, and the contact L2, the contacts L4, … …, and the contact Lk are located on the same side as the antenna end contact T0.
Each transfer connecting contact and each antenna end contact are only connected with one end of any circle of antenna;
specifically, one end of the 1 st turn of the antenna is connected with the antenna end contact T0, and the other end is connected with the relay connection contact L1;
one end of the 2 nd turn of the antenna is connected with a relay connection contact L2, and the other end is connected with a relay connection contact L3.
……
The first of the antennauOne end of the ring is connected with a transfer connecting contact L2（u-1）The other end is connected with a transfer connecting contact L2u-1。2≤u＜ k。
One end of the k/2 th circle of the antenna is connected with a transfer connecting contact Lk, and the other end of the k/2 th circle of the antenna is connected with an antenna end contact T1;
two transit connection contacts positioned at different sides are connected through a conductor, so that the antenna is connected into a continuous integral spiral annular integral antenna which is marked as a spiral annular antenna; and two ends of the spiral annular antenna are respectively connected with the 2 antenna end contacts. The spiral annular antenna is an external signal source and is provided with two end contacts and a plurality of middle contacts; these intermediate contacts are located between two end contacts, which are contacts that connect 2 antenna end contacts. The two end contacts are two end heads of the antenna; two end contacts are connected with a capacitor in parallel to form an oscillating circuit;
an Nth rectifying circuit module is connected between the antenna end contact T0 and the antenna end contact T1. The rectifier circuit modules of the present embodiment are all full-wave rectifier circuits, and each full-wave rectifier circuit comprises a rectifier bridge composed of four diodes and a capacitor connected in parallel with the rectifier bridge, and two poles at the outlet of the capacitor are respectively Vss and GND. The rectifier circuit module has a high impedance. And the miniature voltage measuring device in the Nth rectifying circuit module is marked as the Nth miniature voltage measuring device.
The detection unit is provided with n external detection contacts, which are respectively marked as J1, J2, … and Jn; and part or all of the external detection contacts are electrically connected with one of the end contact and the middle contact of the spiral loop antenna randomly through a rectifier circuit module. The rectifier circuit modules connected with the external detection contact are respectively marked as a 1 st rectifier circuit module … … nth rectifier circuit module;
the RFID chip also comprises n operation modules. The n operational modules are operational amplifiers; one input end of the ith operational amplifier is connected with the electric signal output by the Nth rectifying circuit module, and the other input end of the ith operational amplifier is connected with the electric signal output by the ith rectifying circuit module.
And the ith operational amplifier processes the electric signal output by the Nth rectifying circuit module and the electric signal output by the ith rectifying circuit module and outputs a random signal variable.
The calculation control unit reads the random proportional variable output by each operational amplifier and stores the random proportional variable in the information set of the storage unit.
The RFID chip is a high frequency RFID chip. The operating frequency was 13.56 MHz.
After the RFID chip is packaged into an RFID label, when the commodity leaves a factory, scanning the RFID chip and recording a random electric signal variable or a random digital signal variable in an external database; when the commodity is started, the connection line of the detection point is damaged, and when the anti-counterfeiting verification is carried out, if the random electric signal variable or the random digital signal variable of the scanned RFID label is different from that of the scanned RFID label when the commodity leaves a factory, the commodity is judged to be forged.
Example 24:
a high-frequency RFID chip with an antenna detection port comprises a radio frequency interface circuit unit, a detection unit, a calculation control unit and a storage unit;
the radio frequency interface circuit unit is provided with 2 antenna end contacts and 6 transfer connecting contacts.
Wherein, the antenna end contacts are respectively marked as antenna end contact T1 and antenna end contact T0; the transit connection contacts are marked as a contact L1, a contact L2, a contact L3, a contact L4, a contact L5 and a contact L6;
when packaging, the RFID chip and the antenna are arranged in the electronic tag;
the circles of the antenna are distributed from outside to inside in sequence and are not intersected outside the RFID chip;
the contact L1, the contact L3, the contact L5, and the antenna end contact T1 are on the same side. The contact L2, the contact L4, the contact L5, and the antenna end contact T0 are on the same side.
One end of the 1 st circle of the antenna is connected with an antenna end contact T0, and the other end of the antenna is connected with a contact L1; the 2 nd turn of the antenna is connected at one end to contact L2 and at the other end to contact L3. One end of the 3 rd turn of the antenna is connected with a contact L4, and the other end of the antenna is connected with a contact L5; the 4 th turn of the antenna has one end connected to contact L6 and the other end connected to antenna end contact T1.
The contact L1 is connected with the contact L2 through an electric conductor;
the contact L3 is connected with the contact L4 through an electric conductor;
the contact L5 is connected with the contact L6 through an electric conductor;
through the connection, the 4-turn antenna is connected into a continuous integral spiral annular integral antenna which is marked as a spiral annular antenna; and two ends of the spiral annular antenna are respectively connected with the 2 antenna end contacts. The spiral loop antenna is an external signal source and is provided with two end contacts and 6 middle contacts; these intermediate contacts are located between two end contacts, which are contacts that connect 2 antenna end contacts. The two end contacts are two end heads of the antenna;
an Nth rectifying circuit module is connected between the antenna end contact T0 and the antenna end contact T1. The rectifier circuit modules of the present embodiment are all full-wave rectifier circuits, and each full-wave rectifier circuit comprises a rectifier bridge composed of four diodes and a capacitor connected in parallel with the rectifier bridge, and two poles at the output of the full-wave rectifier circuit are Vss and GND respectively. The rectifier circuit module has a high impedance. And the miniature voltage measuring device in the Nth rectifying circuit module is marked as the Nth miniature voltage measuring device.
The detection unit has 2 external detection contacts, which are respectively marked as J1 and J2; the external detection contact J1 is randomly connected with the middle contact L3 of the spiral loop antenna through the 1 st rectifying circuit module.
The RFID chip also comprises an operation module. The operation module is an operational amplifier; one input end of the operational amplifier is connected with the electric signal output by the Nth rectifying circuit module, the other input end of the operational amplifier is connected with the electric signal output by the 1 st rectifying circuit module, and the grounding end of the operational amplifier is connected with GND (ground) of all the rectifying circuit modules.
And the operational amplifier compares the electric signal output by the Nth rectifying circuit module with the electric signal output by the 1 st rectifying circuit module and outputs a random signal variable. The value standard of the random signal variable is as follows: when the electrical signal output by the Nth rectifying circuit module is greater than the electrical signal output by the 1 st rectifying circuit module, the random signal variable =1, otherwise, the random signal variable = 0. In this embodiment, since the external detection contact J1 is connected to the relay connection contact L2, the random signal variable = 0.
The calculation control unit reads a random proportional variable k output by the operational amplifier1And stored in the information set of the storage unit.
The RFID chip is a high frequency RFID chip. The operating frequency was 13.56 MHz.
After the RFID chip is packaged into an RFID label, when the commodity leaves a factory, scanning the RFID chip and recording a random electric signal variable or a random digital signal variable in an external database; when the commodity is started, the connection line of the detection point is damaged, and when the anti-counterfeiting verification is carried out, if the random electric signal variable or the random digital signal variable of the scanned RFID label is different from that of the scanned RFID label when the commodity leaves a factory, the commodity is judged to be forged.
Example 25:
a high-frequency RFID chip with an antenna detection port at least comprises a radio frequency interface circuit unit, a detection unit, a calculation control unit and a storage unit;
the radio frequency interface circuit unit is provided with 2 antenna end contacts and k transfer connecting contacts.
Wherein, the antenna end contacts are respectively marked as antenna end contact T0 and antenna end contact T1; the transit connection contacts are marked as contacts L1, … … and L2 k-2; k is an even number. k is more than or equal to 4.
When packaging, the RFID chip and the spiral annular antenna are arranged in the electronic tag;
the circles of the antenna are distributed from outside to inside in sequence and are not intersected outside the RFID chip.
The contact L1, the contacts L3 and … … and the contact Lk-1 are located on the same side as the antenna end contact T1, and the contact L2, the contacts L4 and … … and the contact L2k-2 are located on the same side as the antenna end contact T0.
Each transfer connecting contact and each antenna end contact are only connected with one end of any circle of antenna;
specifically, one end of the 1 st turn of the antenna is connected with the antenna end contact T0, and the other end is connected with the relay connection contact L1;
one end of the 2 nd turn of the antenna is connected with a relay connection contact L2, and the other end is connected with a relay connection contact L3.
……
The first of the antennauOne end of the ring is connected with a transfer connecting contact L2（u-1）The other end is connected with a transfer connecting contact L2u-1。2≤u＜ k。
One end of the kth circle of the antenna is connected with a transfer connecting contact L2k-2, and the other end of the kth circle of the antenna is connected with an antenna end contact T1;
two middle contacts or antenna end contacts positioned on different sides are connected through a conductor, so that the antenna is connected into a continuous integral spiral annular integral antenna which is marked as a spiral annular antenna; two ends, namely end contacts, of the spiral loop antenna are respectively connected with 2 antenna end contacts. The spiral loop antenna is an external signal source. The transfer connecting contact is the middle contact of the spiral annular antenna.
Wherein, the potentials of the antenna terminal contact T0 and the antenna terminal contact T1 are inputted into the Nth rectification circuit module. The rectifier circuit modules in this embodiment are all full-wave rectifier circuits, and each full-wave rectifier circuit at least includes a rectifier bridge composed of four diodes and a capacitor connected in parallel with the rectifier bridge. The rectifier circuit module has a high impedance.
The detection unit is provided with M external detection contacts, which are respectively marked as J1, J2, … and JM; the electric potential of one of the external detection contact and the end contact and the middle contact of the spiral annular antenna is input into a rectifier circuit module, and the number of the external detection contacts connected with the rectifier circuit module is n (n is more than or equal to 1 and less than or equal to M).
The rectifier circuit modules connected with the external detection contact are respectively marked as a 1 st rectifier circuit module … … nth rectifier circuit module;
the RFID chip also at least comprises n operational amplification modules. The n operational amplification modules are operational amplifiers; one input end of the ith operational amplifier is connected with the output of the Nth rectifying circuit module, the other input end of the ith operational amplifier is connected with the output of the ith rectifying circuit module, and the grounding end of the ith operational amplifier is connected with GND (ground) of all the rectifying circuit modules.
And the ith operational amplifier compares the output of the Nth rectifying circuit module with the output of the ith rectifying circuit module and outputs a random signal variable. And the random signal variable is the ratio of the output of the Nth rectifying circuit module and the output of the ith rectifying circuit module.
The calculation control unit reads the random signal variable output by each operational amplifier and stores the random signal variable in the information set of the storage unit.
The RFID chip is a high frequency RFID chip. The operating frequency was 13.56 MHz.
After the RFID chip is packaged into an RFID label, when the commodity leaves a factory, scanning the RFID chip and recording a random electric signal variable or a random digital signal variable in an external database; when the commodity is started, the connection line of the detection point is damaged, and when the anti-counterfeiting verification is carried out, if the random electric signal variable or the random digital signal variable of the scanned RFID label is different from that of the scanned RFID label when the commodity leaves a factory, the commodity is judged to be forged.
Example 26:
a high-frequency RFID chip with an antenna detection port comprises a radio frequency interface circuit unit, a detection unit, a calculation control unit and a storage unit;
the radio frequency interface circuit unit is provided with two antenna end contacts connected with an external antenna; the detection unit has at least one external detection contact; during packaging, the external detection contact is randomly connected with one or more external signal sources, the calculation control unit obtains an electric signal of the detection contact after being processed by the detection unit through reading an instruction, and the electric signal is related to the external signal source connected with the detection contact.
Two antenna end contacts, a plurality of middle contacts and a plurality of detection contacts are arranged inside the high-frequency RFID chip, the antenna end contacts are respectively marked as T0 and T1, and the middle contacts are respectively marked as L1, L2, … and L2 (k-1). k is more than or equal to 4.
The antenna end contact T0 and the k-1 intermediate contacts are on the same side, and the antenna end contact T1 and the k-1 intermediate contacts are on the same side.
The antenna end contact T0 is connected to an opposite intermediate contact by a loop of antenna on the outside of the chip.
The two middle contacts on the opposite sides are connected outside the chip through a circle of antenna.
The antenna end contact and the middle contact are both only connected with one end of any circle of antenna;
the antenna end contact T1 is connected to an opposite intermediate contact by a loop of antenna on the outside of the chip.
Two middle contacts or antenna end contacts positioned on different sides are connected through a conductor, so that the antenna is connected into a continuous integral spiral annular integral antenna which is marked as a spiral annular antenna, and the number of turns of the spiral antenna is k; two ends, namely end contacts, of the spiral loop antenna are respectively connected with 2 antenna end contacts. The two middle contacts on the opposite sides are connected outside the chip through a circle of antenna.
And a plurality of detection contacts are connected to external pins of the high-frequency RFID chip, and the positions of the detection contacts are not overlapped with the positions of the antenna end contact and the middle contact.
When the chip is packaged into a label, the chip detection contact pin is randomly connected with a middle contact or an antenna end contact of an external spiral antenna through a conductor, so that a detection potential is formed between the detection contact and the contact of any antenna end; the value of the sense potential is related to the number of antenna turns between the sense contact and the antenna end contact.
When the chip is packaged into a label, the chip detection contact pin is randomly connected with a middle contact or an antenna end contact of an external spiral antenna through a conductor, so that a detection potential I is formed between the detection contact and one antenna end contact, and a detection potential II is formed between the detection contact and the other antenna end contact.
The number of turns of the spiral loop antenna is recorded as m, two end points of the spiral loop antenna are antenna end contacts, and the value range of the detection potential is [0, V ]DD]；
Wherein, when the detection contact is randomly connected with one antenna end contact as the potential reference point, the detection potential value between the antenna end contact and the detection contact is 0, and the detection potential value between the antenna end contact and the other antenna end contact is VDD；
Value V 'of the detection potential formed when the detection contact is randomly connected with one of the intermediate contacts or the antenna terminal contact'jiAnd VDDIs recorded as a proportional parameter V'jiThe proportional parameter is equal to the relative ratio of the number r of turns of the antenna between the middle contact and the antenna end contact serving as the potential reference point to the total number m of turns of the antenna; 0 is less than or equal to V'ji≤1，V''ji=V'ji/VDD=r/m。
The proportion parameters are subjected to binary coding and can be identified by a calculation control unit and a scanning device.
When connecting, one or more same contacts can exist in the middle contact or the antenna end contact connected with all the detection contacts, and the middle contact or the antenna end contact can also be completely different.
Example 27:
a high frequency RFID chip with antenna test port, the main structure is shown in embodiment 25, wherein, the number of test contacts is f = x + y, wherein, x test contacts are located on the same side of the antenna terminal contact T0, and y test contacts are located on the same side of the antenna terminal contact T1.
The detection contact is randomly connected with the antenna end contact or the middle contact on the same side or different sides.
Example 28:
a high frequency RFID chip with antenna test port, the main structure is shown in embodiment 25, wherein, the number of test contacts is f = x + y, wherein, x test contacts are located on the same side of the antenna terminal contact T0, and y test contacts are located on the same side of the antenna terminal contact T1.
The detection contacts are randomly connected with the antenna end contacts or the middle contacts on the same side.
Example 29:
a high frequency RFID chip with antenna test port, the main structure is shown in embodiment 25, wherein, the number of test contacts is f = x + y, wherein, x test contacts are located on the same side of the antenna terminal contact T0, and y test contacts are located on the same side of the antenna terminal contact T1.
The detection contact is randomly connected with the antenna end contact or the middle contact on the opposite side.
Example 30:
a high-frequency RFID chip with an antenna detection port comprises a radio frequency interface circuit unit, a detection unit, a calculation control unit and a storage unit;
the radio frequency interface circuit unit is provided with two antenna end contacts connected with an external antenna; the detection unit has at least one external detection contact; during packaging, the external detection contact is randomly connected with one or more external signal sources, the calculation control unit obtains an electric signal of the detection contact after being processed by the detection unit through reading an instruction, and the electric signal is related to the external signal source connected with the detection contact.
Two antenna end contacts, 6 middle contacts and 2 detection contacts are arranged inside the high-frequency RFID chip, the antenna end contacts are respectively marked as T0 and T1, the middle contacts are respectively marked as L1, L2, L3, L4, L5 and L6, and the detection contacts are respectively marked as J1 and J2.
The detection contact J1 is connected to the antenna end contact T0, and the antenna end contact T0 forms a detection potential with itself, and the detection potential value is 0.
The value of the reference potential between the antenna terminal contact T0 and the antenna terminal contact T1 is 4.
The detection signal processing channel receives the detection potential and the reference potential value, calculates the ratio of the detection potential and the reference potential value, and records the ratio as a ratio parameter, wherein the ratio parameter corresponding to the detection contact J1 is 0.
The test contact J2 is connected to the intermediate contact L5, and the intermediate contact L5 forms a test potential with the antenna terminal contact T1, the potential value being 1.
And the detection signal processing channel receives the detection potential and the reference potential value, calculates the proportion of the detection potential and the reference potential value, and records the proportion as a proportion parameter, wherein the proportion parameter corresponding to the detection contact J2 is 1/4.
The scale parameter is binary coded and can be read by the calculation detection unit and an external scanning device.
Example 31:
a high-frequency RFID chip with an antenna detection port comprises a radio frequency interface circuit unit, a detection unit, a calculation control unit and a storage unit;
the radio frequency interface circuit unit is provided with two antenna end contacts connected with an external antenna; the detection unit has at least one external detection contact; during packaging, the external detection contact is randomly connected with one or more external signal sources, the calculation control unit obtains an electric signal of the detection contact after being processed by the detection unit through reading an instruction, and the electric signal is related to the external signal source connected with the detection contact.
Two antenna end contacts, 6 middle contacts and 2 detection contacts are arranged inside the high-frequency RFID chip, the antenna end contacts are respectively marked as T0 and T1, the middle contacts are respectively marked as L1, L2, L3, L4, L5 and L6, and the detection contacts are respectively marked as J1 and J2.
The value of the reference potential between the antenna terminal contact T0 and the antenna terminal contact T1 is 4.
The test contact J1 is connected to the intermediate contact L6, and the intermediate contact L6 forms a test potential with the antenna terminal contact T0, the potential value being 3.
And the detection signal processing channel receives the detection potential and the reference potential value, calculates the proportion of the detection potential and the reference potential value, and records the proportion as a proportion parameter, wherein the proportion parameter corresponding to the detection contact J1 is 3/4.
The detection contact J2 is connected to the antenna terminal contact T0, and the antenna terminal contact T0 forms a detection potential with the antenna terminal contact T1, and the potential value is 4.
The detection signal processing channel receives the detection potential and the reference potential value, calculates the ratio of the detection potential and the reference potential value, and records the ratio as a ratio parameter, wherein the ratio parameter corresponding to the detection contact J2 is 1.
The scale parameter is subjected to a binary encoding process, and after the binary encoding process, the scale parameter can be read by the calculation detection unit.
The storage unit stores the ratio parameter.
Example 32:
the label for packaging the high-frequency RFID chip with the antenna detection port comprises the RFID chip and a plurality of circles of antennas;
the RFID chip and the antenna are packaged and distributed in the electronic tag;
the RFID chip is provided with 2 antenna end contacts and a plurality of intermediate contacts;
two ends of each circle of antenna are connected with the antenna end contact or the middle contact; each middle contact and each antenna end contact are only connected with one end of one circle of antenna;
the spiral annular antenna is connected into a whole by the plurality of circles of antennas, and two ends of the spiral annular antenna are respectively connected with the 2 antenna end contacts. During packaging, the test contacts are randomly connected to an intermediate contact or antenna end contact. I.e. such that the sensing contacts are randomly connected to one or more external signal sources (which may be antennas in this embodiment).
After the RFID chip is packaged into an RFID label, when the commodity leaves a factory, scanning the RFID chip and recording a random signal variable or a random digital signal variable in an external database; when the commodity is started, the connection line of the detection point is damaged, and when the anti-counterfeiting verification is carried out, if the random signal variable or the random digital signal variable of the scanned RFID label is different from that of the scanned RFID label when the commodity leaves a factory, the commodity is judged to be forged.

Claims (20)

1. The utility model provides a high frequency RFID chip with antenna detection port which characterized in that: the device at least comprises a radio frequency interface circuit unit, a detection unit, a calculation control unit and a storage unit;
the radio frequency interface circuit unit is provided with two antenna end contacts connected with an external antenna; the detection unit has at least one external detection contact; the antenna is a component that provides an external signal source; the external antenna is provided with two end contacts and a plurality of middle contacts; these intermediate contacts are located between the two end contacts; the potential reference point of the detection signal processing channel in the chip is connected with the middle contact or one of the two end contacts and is used as the potential of the potential reference point of the detection signal processing channel; during packaging, the external detection contact is randomly connected with one or more external signal sources, the calculation control unit obtains an electric signal of the detection contact after being processed by the detection unit through reading an instruction, and the electric signal is related to the external signal source connected with the detection contact.
2. The high-frequency RFID chip with the antenna detection port according to claim 1, wherein: each external detection contact of the detection unit corresponds to a detection signal processing channel; two input ends of the detection signal processing channel are respectively connected with the detection contact and the potential reference point; and the potential difference between the detection contact of the detection signal processing channel and the potential reference point passes through the signal value of the detection signal processing channel, and is read by the chip calculation control unit through an instruction.
3. The high-frequency RFID chip with the antenna detection port according to claim 2, wherein: the detection signal processing channel at least comprises a rectifying module and an operational amplifying module.
4. The high-frequency RFID chip with the antenna detection port according to claim 2, wherein: the detection signal processing channel at least comprises a rectifying module and a multi-path quantization coding module.
5. The high-frequency RFID chip with the antenna detection port according to claim 3, wherein: a rectification module of the radio frequency interface circuit unit is marked as an Nth rectification circuit module; the rectification modules of all the detection signal processing channels are respectively marked as a 1 st rectification circuit module … … nth rectification circuit module;
wherein, two radio frequency interface circuits are connected with the end contact of the external antennaThe point is connected to the Nth rectifying circuit module; the ith external detection contact and one end contact are connected into an ith rectifying circuit module in a plurality of detection contacts numbered from 1 to n, wherein i is 1 and 2 … … n; the output voltage of the ith rectifying circuit module is recorded as a random-machine voltage variable V'ji(ii) a The random machine voltage variable V'jiCorresponding to the potential between the ith detection point and the electric shock of any antenna terminal; the Nth rectification circuit module outputs a relatively constant voltage VDD。
6. The high-frequency RFID chip with the antenna detection port according to claim 4, wherein: a rectification module of the radio frequency interface circuit unit is marked as an Nth rectification circuit module; the rectification modules of all the detection signal processing channels are respectively marked as a 1 st rectification circuit module … … nth rectification circuit module;
the two radio frequency interface circuits are connected with end contacts of an external antenna and are connected with an Nth rectifying circuit module; the ith external detection contact and one end contact are connected into an ith rectifying circuit module in a plurality of detection contacts numbered from 1 to n, wherein i is 1 and 2 … … n; the output voltage of the ith rectifying circuit module is recorded as a random-machine voltage variable V'ji(ii) a The random machine voltage variable V'jiCorresponding to the potential between the ith detection point and the electric shock of any antenna terminal; the Nth rectification circuit module outputs a relatively constant voltage VDD。
7. The high-frequency RFID chip with the antenna detection port according to claim 5, wherein: the operational amplification modules of all the detection signal processing channels are respectively recorded as the 1 st operational amplification module … … nth operational amplification module; the output voltage of the N rectifier circuit module is respectively equal to the output voltage V 'of the 1 st and 2 … … N rectifier circuit modules'jiAfter pairing, inputting n operational amplification modules; the n operational amplification modules respectively output the n proportional parameters of random voltage variables and relatively constant voltage corresponding to random connection of the external detection points; n proportional parameters are random signal variables V of the RFID chip "jiThe calculation control unit obtains V of the channel by an instruction "ji。
8. The high-frequency RFID chip with the antenna detection port according to claim 6, wherein: the multi-path quantization coding module is represented by VDDThe counter control means turns on the i-th detection point signal V 'by a command with Vss as a common ground for a reference potential'jiTo the multi-path quantization coding module, after A/D quantization coding of the multi-path quantization coding module, V is obtainedDDFor reference, the reference potential being a digitised V "jiThe calculation control unit obtains a random signal variable V corresponding to the random connection of the external detection points of the channel through an instruction "ji。
9. The high-frequency RFID chip with the antenna detection port as claimed in any one of claims 1 and 2, wherein: the detection unit is a high impedance input.
10. The high-frequency RFID chip with the antenna detection port as claimed in any one of claims 1 and 2, wherein: the radio frequency interface circuit unit is connected with an external antenna; the external antenna is a spiral loop antenna; the loop antenna is a component that provides the external signal source;
and during packaging, the detection contact is randomly connected with any middle contact or end contact, so that the signal value of the potential difference between the detection contact and the potential reference point after passing through the detection signal processing channel is read by a chip calculation control unit through an instruction to become a random signal variable of the RFID chip.
11. The high-frequency RFID chip with the antenna detection port as claimed in any one of claims 1 and 2, wherein: the radio frequency interface circuit unit is connected with an external antenna; the external antenna is a spiral loop antenna; the loop antenna is a component that provides the external signal source;
the antenna is provided with two end contacts and a plurality of middle contacts; these intermediate contacts are located between the two end contacts;
the potential reference point of the detection signal processing channel in the chip is respectively connected with one of the two end contacts and used as the potential of the potential reference point of the detection signal processing channel; and during packaging, the detection contact is randomly connected with any middle contact or end contact, so that the signal value of the potential difference between the detection contact and the potential reference point after passing through the detection signal processing channel is read by a chip calculation control unit through an instruction to become a random signal variable of the RFID chip.
12. The high-frequency RFID chip with the antenna detection port according to claim 7 or 8, wherein: the signal variable is a potential signal or a voltage signal.
13. The high-frequency RFID chip with the antenna detection port as claimed in any one of claims 1 and 2, wherein: the RFID chip also comprises a plurality of electric conductors positioned in the RFID chip;
one antenna end contact and part of the middle contact are positioned on one side in the RFID chip, and the other antenna end contact and the other part of the middle contact are positioned on the other side in the RFID chip;
two contacts positioned on different sides of the RFID chip are externally connected with a circle of antenna;
one conductor is connected with any two middle contacts or end contacts positioned on different sides of the RFID chip, so that the multi-turn antenna positioned outside the chip is communicated inside the RFID chip, and the spiral loop antenna is formed.
14. A high frequency RFID chip with antenna detection port according to claim 1 or 2, characterized in that: the detection contacts are connected to external pins of the high-frequency RFID chip;
when the chip is packaged into a label, the chip detection contact pin is randomly connected with a middle contact or an antenna end contact of an external spiral antenna through a conductor, so that a detection potential is formed between the detection contact and the contact of any antenna end; the value of the sense potential is related to the number of antenna turns between the sense contact and the antenna end contact.
15. The high frequency RFID chip with antenna detection port of claim 14, wherein: when the chip is packaged into a label, the chip detection contact pin is randomly connected with a middle contact or an antenna end contact of an external spiral antenna through a conductor, so that a detection potential I is formed between the detection contact and one antenna end contact, and a detection potential II is formed between the detection contact and the other antenna end contact.
16. The high frequency RFID chip with antenna detection port of claim 15, wherein: the number of turns of the spiral loop antenna is recorded as m, two end points of the spiral loop antenna are antenna end contacts, and the value range of the detection potential is [0, V ]DD]；
Wherein, when the detection contact is randomly connected with one antenna end contact as the potential reference point, the detection potential value between the antenna end contact and the detection contact is 0, and the detection potential value between the antenna end contact and the other antenna end contact is VDD；
Value V 'of the detection potential formed when the detection contact is randomly connected with one of the intermediate contacts or the antenna terminal contact'jiAnd VDDIs marked as a random signal variable V "jiRandom signal variable V "jiEqual to the relative ratio of the number r of turns of the antenna between the middle contact and the antenna end contact as the potential reference point to the total number m of turns of the antenna; v is not more than 0 "ji≤1，V”ji＝V'ji/VDD＝r/m。
17. The high frequency RFID chip with antenna detection port of claim 16, wherein: the ratio parameter is binary coded and can be identified by the calculation control unit.
18. The high-frequency RFID chip with the antenna detection port according to claim 1, wherein: the RFID chip is a high frequency RFID chip.
19. The tag adopting the high-frequency RFID chip with the antenna detection port of any one of claims 1 to 18, characterized in that: the RFID tag comprises a tag of a high-frequency RFID chip with an antenna detection port and a plurality of circles of antennas;
the RFID chip and the antenna are packaged and distributed in the electronic tag;
the RFID chip is provided with 2 antenna end contacts and a plurality of intermediate contacts;
two ends of each circle of antenna are connected with the antenna end contact or the middle contact; each middle contact and each antenna end contact are only connected with one end of one circle of antenna;
the multiple circles of antennas are connected into an integral spiral annular antenna, and two ends of the spiral annular antenna are respectively connected to 2 antenna end contacts; during packaging, the test contacts are randomly connected to an intermediate contact or antenna end contact.
20. The tag of claim 19, wherein the tag comprises a high frequency RFID chip with an antenna detection port, and the tag comprises: after the RFID chip is packaged into an RFID label, when the commodity leaves a factory, scanning the RFID chip and recording a random signal variable or a random digital signal variable in an external database; when the commodity is started, the connection line of the detection point is damaged, and when the anti-counterfeiting verification is carried out, if the random signal variable or the random digital signal variable of the scanned RFID label is different from that of the scanned RFID label when the commodity leaves a factory, the commodity is judged to be forged.
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