WO2017133505A1

WO2017133505A1 - Electronic tag having status input contact

Info

Publication number: WO2017133505A1
Application number: PCT/CN2017/072004
Authority: WO
Inventors: 江峰
Original assignee: 江峰
Priority date: 2016-02-05
Filing date: 2017-01-22
Publication date: 2017-08-10

Abstract

The present invention provides an electronic tag having a status input contact, comprising an RFID chip with an interactive switch input port and a radio frequency antenna that are packaged in the electronic tag. The RFID chip with an interactive switch input port at least comprises a radio frequency interface circuit unit, a computation control unit, and an input interface circuit unit; the computation control unit reads, when an RFID reader/writer reads the RFID chip, status information generated by the input interface circuit unit; a particular joint surface is provided on the outer surface of the electronic tag; the particular joint surface comprises several conductive contacts which are separately connected to the input interface circuit unit or grounded; by means of a change in an electrical connection relation of the conductive contacts, the status information generated by the input interface circuit unit can be changed.

Description

Electronic tag with status input contact

Technical field

The invention relates to an RFID chip and an RFID tag, in particular to the field of random coding of RFID tags for different products in different surviving states.

Background technique

When some special products or important products leave the factory, we often need to give them some special random code to represent that they are in a special state. When this product enters another use state, we hope that the outside world This code cannot be easily obtained to avoid misleading the product in its original state of existence. For example, in the field of commodity anti-counterfeiting, we hope that there is such a random coding scheme that we can generate a completely random state code before the commodity is opened for consumption, and when the commodity is enabled for consumption, this state is encoded in the outside world ( Outside the factory database, it no longer exists or is difficult to recover. As a means of anti-counterfeiting for some high value-added or high-priced goods, it is of great significance to prevent the use of old packaging or used electronic labels. .

Summary of the invention

The object of the present invention is to solve the problem of random coding of goods under different states to prevent the circulation of counterfeit goods.

The technical solutions adopted for achieving the object of the present invention are as follows:

An electronic tag having a status input contact, comprising an RFID chip with an interactive switch input port and an RF antenna packaged within the electronic tag.

The RFID chip with an interactive switch input port includes at least a radio frequency interface circuit unit, a calculation control unit, and an input interface circuit unit. When the RFID reader reads the RFID chip, the calculation control unit reads status information generated by the input interface circuit unit.

The outer surface of the electronic tag has a specific bonding surface. The specific bonding surface includes a plurality of electrically conductive contacts that are respectively connected to the input interface circuit unit or to ground.

The state information generated by the input interface circuit unit is changed by changing the electrical connection relationship of the electrically conductive contacts.

Further, after the computing control unit reads the status information, the status information is sent out by the radio frequency interface circuit unit through the radio frequency antenna.

Alternatively, when the storage unit included in the RFID chip has stored information, the calculation After the control unit reads the status information, the stored information is processed according to the status information, and the processed information is sent out by the radio frequency interface circuit unit through the radio frequency antenna.

Further, the conductive geometry formed by the plurality of conductive contacts on the specific bonding surface is a plurality of arcuate contacts distributed on i concentric circles.

The i concentric circles are in order of the first concentric circle, the second concentric circle, ..., the i-th concentric circle according to the radius from large to small. A number of arcuate contacts are distributed on each concentric circle, and the contacts on adjacent concentric circles are not in contact.

All of the electrically conductive contacts on the first concentric circle are connected to the K ₁ terminal of the input interface circuit unit, and all of the electrically conductive contacts on the second concentric circle are connected to the K ₂ terminal, ..., on the i-th concentric circle All K _i may be connected to the conductive terminal contacts. The K ₁ , K ₂ , . . . , K _n terminals are the interactive switch input port bits of the RFID chip, and i and n are natural numbers, i≤n.

Further, the specific bonding surface is a circular surface or a circular surface. The specific joint surface is divided into m ₁ sector regions, and the center angle corresponding to each sector region is 360°/m ₁ , and each sector region is divided into t ₁ sub-regions. Wherein m _{_1,} t ₁ is a natural number, t ₁ = 2 ^i, t ₁ which sub-regions, each of the conductive contacts may be randomly distributed or distributed according to concentric circles corresponding to the i-bit binary code, in which m ₁ and th In the region, the conductive contacts on each concentric circle are distributed in the same way.

Further, the conductive geometry formed by the plurality of conductive contacts on the specific bonding surface is a plurality of arcuate contacts distributed on two concentric circles.

The specific bonding surface is a circular or annular surface. One of the concentric circles has m ₂ × j segment arc contacts, these arc contacts are divided into m ₂ groups, forming m ₂ sectors of the same shape, each sector having j arc contacts, The layout and arrangement of the arc contacts of each sector are the same, and the arc contacts of each sector are respectively connected to the bits K ₁ , K ₂ , ..., K _j terminals of the interactive switch input port of the RFID chip. Connected. The K ₁ , K ₂ , . . . , K _n terminals are interactive switch input port bits of the RFID chip, and j and n are natural numbers, j≤n.

All the contacts on the other concentric circle are connected to the ground.

Further, the two concentric circles where the conductive contacts on the specific bonding surface are located are respectively recorded as concentric circles A and concentric circles B. The specific bonding surface is a circular surface or an annular surface, which is divided into m ₂ sectoral regions, and m ₂ is a natural number. The central angle corresponding to each sector is 360°/m ₂ .

Wherein all of the electrically conductive contacts on the concentric circle A are permanently grounded, and all of the electrically conductive contacts on the concentric circle B are not permanently grounded.

Alternatively, all of the electrically conductive contacts on the concentric circle B are permanently grounded, and all of the electrically conductive contacts on the concentric circle A are not permanently grounded.

Further, the electrical connection relationship is an on-off relationship between the conductive contact and the ground point.

Further, a plurality of electrically conductive contacts on the particular bonding surface are arranged in a regular conductive geometry with at least one permanent ground contact thereon.

All conductive contacts are not directly connected to the permanent ground contacts. Electrically connecting all or a portion of the conductive contacts to the permanent ground contacts by external components randomly attached to the specific bonding surface, such that the electrical connection relationship of the conductive contacts changes, thereby The status information generated by the input interface circuit unit changes.

Further, when the specific bonding surface is circular, the permanent ground contact is a circular contact at a center of a concentric circle, or the permanent ground contact has a radius different from that of all the circuit elements connected to the input interface. A concentric circle of conductive contacts and a concentric annular contact or a plurality of arcuate contacts concentric with all concentric circles.

When the specific bonding surface is annular, the permanent grounding contact is a circular ring contact or segments having a radius different from all concentric circles of the electrically conductive contacts connected to the input interface circuit unit and concentric with all concentric circles Arc contact.

Further, when the external component and the specific bonding surface are randomly attached together, the conductive geometric patterns on the specific bonding surface are randomly matched, and the interactive switch input port collects a set of initial status bits. information.

When the external component is reattached after being separated from the specific bonding surface, the conductive geometry on the specific bonding surface is again randomly matched, and the interactive switch input port reacquires a set of status bit information.

After the initial status bit information is formed as described above, if the application system reads that the status bit information of the electronic tag is not the initial status bit information, the application system will recognize the external component as described above and the specific combination. The face has been separated.

Further, the RFID electronic tag is an NFC electronic tag having a frequency of 13.56 MHz. Or an 800/900MHz UHF frequency electronic tag. Or it is a 2.45GHz microwave segment electronic tag.

The present invention also discloses a double-sided electronic tag having a status input contact, comprising an RFID chip with an interactive switch input port and an RF antenna packaged within the electronic tag.

The outer surface of the electronic tag has two specific bonding faces. The specific bonding surface includes a plurality of electrically conductive contacts that are respectively connected to the input interface circuit unit or to ground.

Alternatively, when the storage unit included in the RFID chip has stored information, the calculation control unit reads the status information, processes the stored information according to the status information, and processes the processed information by the radio frequency interface circuit unit through the radio frequency antenna. Send out.

Further, the plurality of electrically conductive contacts on the specific bonding surface are arranged to have a regular conductive geometry, and the electrical connection of the conductive geometric patterns on the specific bonding surface is changed by externally bonding the electrical conductors or the conductive geometric figures. The relationship causes the state information generated by the input interface circuit unit to change.

Further, the two specific bonding faces of the electronic tag are randomly combined by two specific bonding faces, that is, the two specific bonding faces are specific bonding faces I, or the two specific bonding faces are specific bonding faces II, or One face is a specific joint face I and the other face is a specific joint face II.

The conductive geometry of the plurality of electrically conductive contacts on the particular bonding surface I is a plurality of arcuate contacts distributed over i concentric circles. The i concentric circles are first concentric circles, second concentric circles, ..., i-th concentric circles according to a radius from large to small. A number of arcuate contacts are distributed on each concentric circle, and the contacts on adjacent concentric circles are not in contact.

The conductive geometry formed by the plurality of conductive contacts on the specific bonding surface II is distributed on two concentric circles, which are respectively recorded as concentric circles A and concentric circles B.

The specific bonding surface I is a circular or annular surface. It is divided into m ₁ sector-shaped areas with the same layout, and each sector area is divided into t ₁ sub-areas. Where m ₁ and t ₁ are natural numbers, t ₁ = 2 ⁱ , and in each of the t ₁ sub-regions, the conductive contacts on each concentric circle are randomly distributed or distributed according to the corresponding i-bit binary code. The particular bonding surface I has at least one permanent ground contact. The permanent ground contact is a circular contact at the center of a concentric circle, or i concentric circles having a radius different from that of all electrically conductive contacts connected to the input interface circuit unit and concentric with all i concentric circles Ring contact.

The specific bonding surface II is a circular surface or a circular surface. Divided into m ₂ sectors with the same layout, the conductive contacts on the specific joint surface II are m ₂ × j arc contacts distributed on the concentric circle A. The contacts on the concentric circle B are grounded.

Wherein, the i concentric circles on the specific bonding surface I are sequentially recorded as a first concentric circle, a second concentric circle, ..., an i-th concentric circle according to a radius from large to small. The j arc contacts on each sector area of the concentric circle A on the specific bonding surface II are sequentially recorded as a first arc contact, a second arc contact, ..., a jth arc contact.

All of the electrically conductive contacts on the first concentric circle are connected to the K ₁ terminal of the input interface circuit unit, and all of the electrically conductive contacts on the second concentric circle are connected to the K ₂ terminal, ..., all on the i-th concentric circle The conductive contact is connected to the K _i terminal, and all the conductive contacts on the first arc contact are connected to the K _i+1 terminal, ..., all the conductive contacts on the jth arc contact are connected to the K _i+j terminal . The K ₁ , K ₂ , . . . , K _n terminals are the interactive switch input port bits of the RFID chip, and i, j, and n are natural numbers, and i+j≤n.

Further, m ₁ ≥ 1 and m ₂ ≥ 1. t ₁ ≥ 2, t ₂ ≥ 2.

i=2, j=2, or i=3, j=3, or i=2, j=3, or i=3, j=2.

Further, when the external components are randomly attached to the specific bonding surface, the conductive geometric patterns on the specific bonding surface are randomly matched, and the interactive switch input port collects a set of initial state bit information.

Further, the electronic tag is in the form of a circular sheet or an annular sheet, and the two specific bonding faces thereof are respectively upper and lower surfaces of the electronic tag.

The technical effect of the present invention is undoubtedly, through the change of state bit information, the authenticity can be accurately distinguished, and the fake and inferior products can be prevented from being false and true, which is of great significance for maintaining social fair order and value. The solution of the invention has strong stability, high reliability, and is easy to implement, and can be widely applied to the field of anti-counterfeiting.

DRAWINGS

FIG. 1 is a schematic structural view of a plastic electronic tag.

Figure 2 is a cross-sectional view taken along line A-A of Figure 1.

Figure 3 is an embodiment of a particular bonding surface.

Figure 4 is an embodiment of a particular bonding surface.

Figure 5 is an embodiment of a particular bonding surface.

Figure 6 is an embodiment of a particular bonding surface.

FIG. 7 is a schematic view of a metal branch that can be bonded to a specific bonding surface of FIGS. 3 and 4.

FIG. 8 is a schematic view of a metal branch that can be bonded to a specific bonding surface of FIGS. 5 and 6.

Figure 9 is an embodiment of a particular bonding surface.

Figure 10 is a schematic illustration of a metal contact that can be bonded to the particular bonding surface of Figure 9.

In the embodiment, any one of Figs. 3, 4, 5, 6, and 9 may be selected, provided that the specific bonding surface is a wafer. When the specific bonding surface is a ring shape, any one of Figs. 5, 6, and 9 can be selected.

Figure 11 is a functional diagram of an RFID chip with an interactive switch input port.

Figure 12 is a schematic diagram of the connection of the input interface circuit.

In the figure: contact-1, RF antenna-2, RFID chip-3 on a specific bonding surface.

Figure 13 is a schematic view showing the structure of a double-sided plastic electronic tag.

Figure 14 is a cross-sectional view taken along line A-A of Figure 13;

Figure 15 is an embodiment of a particular bonding surface.

Figure 16 is an embodiment of a particular bonding surface.

Figure 17 is an embodiment of a particular bonding surface.

Figure 18 is an embodiment of a particular bonding surface.

Fig. 19 is a schematic view showing a metal branch which can be bonded to a specific joint surface of Figs. 15 and 16;

Fig. 20 is a schematic view showing a metal branch which can be bonded to a specific joint surface of Figs. 17 and 18.

Figure 21 is an embodiment of a particular bonding surface.

Figure 22 is a schematic illustration of a metal contact that can be attached to the particular bonding surface of Figure 21.

In the embodiment, any one of Figs. 15, 16, 17, 18, 21 may be selected, provided that the specific bonding surface is a wafer. When the specific bonding surface is a ring shape, any one of Figs. 17, 18, and 21 can be selected.

Figure 23 is a functional diagram of an RFID chip with an interactive switch input port.

Figure 24 is a schematic diagram of the connection of the input interface circuit.

In the figure: contact-21 on a specific bonding surface I/II, RF antenna-22, RFID chip-23, contact-24 on a specific bonding surface I/II.

detailed description

The invention is further illustrated by the following figures and embodiments, but it should not be understood that the scope of the present invention is limited to the following embodiments. Various changes and modifications may be made without departing from the spirit and scope of the invention.

Example 1:

This embodiment discloses an electronic tag having a state input contact. Referring to FIG. 1, the electronic tag is a one-piece body, and an RFID chip with an interactive switch input port and an RF antenna are packaged therein.

12 and 13, the RFID chip with an interactive switch input port includes at least a radio frequency interface circuit unit, a calculation control unit, and an input interface circuit unit. When the RFID reader reads the RFID chip, the calculation control unit reads status information generated by the input interface circuit unit.

The upper surface of the electronic tag shown in Fig. 1 is a specific bonding surface. The specific bonding surface includes a plurality of electrically conductive contacts (black dots in the figure) that are respectively connected to the input interface circuit unit. In an embodiment, the electrically conductive contacts are respectively connected to the K1 to K6 terminals of the input interface circuit unit.

Regardless of how the electrical connection relationship of the electrically conductive contacts is changed, it is easily read by the computational control unit of the RFID chip to form a set of status bit information. In this way, one or more of a to e can be executed when the RFID reader sends an appointment special instruction to the RFID chip:

a) The reader/writer reads status bit information generated by the input interface through the calculation control unit.

b) The information generated by the calculation control unit is affected by the status bit information generated by the input interface unit, and the information generated by the calculation control unit is obtained by the reader/writer.

c) The calculation control unit selectively transmits one or more pieces of information stored in the storage unit according to status bit information generated by the input interface unit.

d) The calculation control unit calculates or determines the information to be sent out according to the calculation control strategy, using the status bit information generated by the input interface unit and the stored information in the storage unit as parameters. The calculation control unit calculates or determines that the information sent out is obtained by the reader.

e) The calculation control unit automatically locks the storage unit according to the calculation control strategy, using the status bit information generated by the input interface unit and the stored information in the storage unit as parameters, and sends out information of abnormal state changes.

Example 2:

Referring to Figures 11 and 12, the RFID chip with an interactive switch input port includes at least a radio frequency interface circuit unit, a calculation control unit, and an input interface circuit unit. When the RFID reader reads the RFID chip, the calculation control unit reads status information generated by the input interface circuit unit.

The outer surface of the electronic tag has a specific bonding surface. The specific bonding surface includes a plurality of electrically conductive contacts that are respectively connected to the input interface circuit unit.

The state information generated by the input interface circuit unit is changed by changing the electrical connection relationship of the electrically conductive contacts. Regardless of how the electrical connection relationship of the electrically conductive contacts is changed, it is easily read by the computational control unit of the RFID chip to form a set of status bit information. In this way, one or more of a to e can be executed when the RFID reader sends an appointment special instruction to the RFID chip:

In this embodiment, one side of the RFID chip is a circular or annular specific joint surface, which can be divided into the cases of FIG. 3, FIG. 4, FIG. 5 and FIG.

For example Figure 4:

The plurality of electrically conductive contacts on the particular bonding surface are distributed in a plurality of arcuate contacts on two concentric circles.

The two concentric circles are in order of the first concentric circle and the second concentric circle according to the radius from large to small. Three concentric arc contacts are distributed on each concentric circle, and the contacts on adjacent concentric circles are not in contact and are not grounded. All of the conductive contacts on a first concentric circle is connected to the interface circuit input terminal K ₁ cells, all of the conductive contacts may be connected to the second concentric circle K ₂ terminals. The K ₁ , K ₂ terminals are interactive switch input port bits of the RFID chip.

The circular area enclosed by all the contacts of the specific bonding surface is equally divided into three areas, and the corresponding central angle of each area is 120°, and each area is equally divided into four sub-areas, that is, there are twelve sub-areas The area, each sub-area corresponds to a central angle of 30°. In the first sub-area, there are no contacts on the first and second concentric circles. In the second sub-area, there is no arc contact on the first concentric circle and a contact on the second concentric circle. In the third sub-area, the first and second concentric circles have arc-shaped contacts. In the fourth sub-area, the first concentric circle has a circular arc contact, and the second concentric circle has no contact. In the fifth sub-area, there are no contacts on the first and second concentric circles. In the sixth sub-area, there is no contact on the first concentric circle and a circular arc contact on the second concentric circle. In the seventh sub-area, the first and second concentric circles have arc-shaped contacts. In the eighth sub-area, the first concentric circle has a circular arc contact, and the second concentric circle has no contact. In the ninth sub-area, there are no contacts on the first and second concentric circles. In the tenth sub-area, there is no contact on the first concentric circle and a circular arc contact on the second concentric circle. In the eleventh sub-area, the first and second concentric circles have arc-shaped contacts. In the twelfth sub-area, the first concentric circle has a circular arc contact, and the second concentric circle has no contact. The angle of the center of each arc contact on a particular joint surface is 30°. The center of the particular bond face has a circular contact that can be used for grounding.

Referring to Figure 7, in combination with a particular bonding surface is a wafer. Three radially extending metal branches radiating from the center of the disc. Of these three metal branches, the angle between adjacent branches is 120°. These metal branches are grounded (it may also be a metal point of the center of a specific bonding surface, and the metal branch is grounded when a specific bonding surface is bonded to the center of the metal branch). Regardless of the manner in which the metal is grounded in contact with the electrically conductive contacts on a particular bonding surface, the electrical connection of the electrically conductive contacts is altered.

Example 3:

In this embodiment, the RFID chip has a specific joint surface that is annular. This particular bonding surface can be as shown in Figure 5 or Figure 6.

For example, Figure 5:

The three concentric circles on the specific bonding surface are first concentric circles, second concentric circles and third concentric circles according to the law of the radius from large to small. A number of arcuate contacts are distributed on each concentric circle, and the contacts on adjacent concentric circles are not in contact. All contacts on the first concentric circle are connected to the K ₁ terminal, all contacts on the second concentric circle are connected to the K ₂ terminal, and all contacts on the third concentric circle are connected to the K ₃ terminal. The K ₁ , K ₂ , and K ₃ terminals are interactive switch input port bits of the RFID chip. The circular area enclosed by all the contacts is divided into three sector-shaped areas, each of which corresponds to a central angle of 120°, and each sector is divided into eight sub-areas, that is, there are twenty-four sub-areas The center angle corresponding to each sub-area is 15°. Each area is routed in accordance with the three-digit binary code. In the first sub-area, there are no contacts on the first, second and third concentric circles. In the second sub-area, the first concentric circle has a circular arc contact, and the second and third concentric circles have no contact. In the third sub-area, there are no contacts on the first and second concentric circles, and circular arc contacts on the third concentric circle. In the fourth sub-area, the first and third concentric circles have arc-shaped contacts, and the second concentric circles have no contacts. In the fifth sub-area, the first, second, and third concentric circles have arc contacts. In the sixth sub-area, the first and second concentric circles have arc-shaped contacts, and the third concentric circles have no contacts. In the seventh sub-area, there are no contacts on the first and third concentric circles, and circular arc contacts on the second concentric circle. In the eighth sub-area, there is no contact on the first concentric circle, and a circular arc contact on the second and third concentric circles. In the ninth sub-area, there are no contacts on the first, second and third concentric circles. In the tenth sub-area, the first concentric circle has a circular arc contact, and the second and third concentric circles have no contact. In the eleventh sub-area, there are no contacts on the first and second concentric circles, and circular arc contacts on the third concentric circle. In the twelfth sub-area, the first and third concentric circles have arc-shaped contacts, and the second concentric circles have no contacts. In the thirteenth sub-area, the first, second, and third concentric circles have arc-shaped contacts. In the fourteenth sub-area, the first and second concentric circles have arc-shaped contacts, and the third concentric circles have no contacts. In the fifteenth sub-area, there are no contacts on the first and third concentric circles, and circular arc contacts on the second concentric circle. In the sixteenth sub-area, there is no contact on the first concentric circle, and a circular arc contact on the second and third concentric circles. In the seventeenth sub-area, there are no contacts on the first, second and third concentric circles. In the eighteenth sub-area, the first concentric circle has a circular arc contact, and the second and third concentric circles have no contact. In the nineteenth sub-area, there are no contacts on the first and second concentric circles, and circular arc contacts on the third concentric circle. In the twentieth sub-area, the first and third concentric circles have arc-shaped contacts, and the second concentric circles have no contacts. In the twenty-first sub-area, the first, second, and third concentric circles have arc-shaped contacts. In the twenty-second sub-area, the first and second concentric circles have arc-shaped contacts, and the third concentric circles have no contacts. In the twenty-third sub-area, there are no contacts on the first and third concentric circles, and circular arc contacts on the second concentric circle. In the twenty-fourth sub-area, there is no contact on the first concentric circle, and a circular arc contact on the second and third concentric circles. The center angle corresponding to each arc contact is 15°. There are also annular contacts on the periphery of the three concentric circles that can be used for grounding.

Referring to Figure 8, in combination with a particular bonding surface is a wafer. The wafer has three metal branches extending radially that are sufficient to intersect one another in a ring metal. Of these three metal branches, the angle between adjacent branches is 120°. These metal branches are grounded (it may also be the grounding contact of the outer ring of the specific bonding surface, which grounds the metal branch when the specific bonding surface is bonded to the wafer having the metal branch).

Regardless of the manner in which the metal is grounded in contact with the electrically conductive contacts on a particular bonding surface, the electrical connection of the electrically conductive contacts is altered.

When the wafers are separated from the respective specific bonding faces, the arc contacts are not connected to V _SS (both are not grounded), and all of the K _i terminals are high, which is denoted as "1". When the specific bonding surface is in contact with the wafer, the K _i terminal corresponding to some arc contacts is low, and is recorded as “0”. When the bonding, the arc contacts on some concentric circles on the specific bonding surface do not touch the metal branches, and the terminals corresponding to the arc contacts are high potential, and are recorded as "1".

According to the situation shown in Figure 5, the probability of occurrence of each status bit is the same when the metal branch is attached, and the potential signal that appears randomly is "111, 011, 110, 010, 000, 001, 101 or 100" .

The conductive geometry on a particular bonding surface is equally divided into three identical regions at an angle of 120°, which greatly increases the reliability of the electrical contact of the corresponding contacts when the opposing specific bonding faces are attached.

Example 4:

The main part of this embodiment is the same as any one of the

embodiments

2 or 3, and a specific input interface circuit unit as shown in FIG. 12 is additionally provided. The input interface circuit unit comprises a first resistor R1, second resistor R2, the unidirectional control switch and a switching control bits C _1. The first resistor R1 and the second resistor R2 form a voltage dividing circuit. One end of the first resistor R1 is connected to the power source V _DD , and the other end is divided into two paths. One of the two resistors is connected in series with the second resistor R2 and then passes through the external switch of the chip. _{After C1} , grounding V _SS , and the other connected one-way control switch is controlled by the control unit C _{1 of the} control unit and then connected to the input interface of the calculation control unit. The two ends of the one-way control switch are respectively K ₁ ' and K ₁ ' terminals. One end of the external switch K _C1 and the second resistor R2 is a K ₁ terminal.

When the external switch K _C1 is closed by the external control, the K ₁ terminal is connected to V _SS , and the voltage dividing circuit composed of the first resistor R1 and the second resistor R2 is divided, and K ₁ ' is low, and K ₁ ' is passed. After the one-way control switch is input to the input interface K ₁ " of the calculation control unit, K ₁ " and K ₁ ' are also low, and the calculation control unit considers that the corresponding switch bit of the external switch circuit unit is "0".

When the external switch K _C1 is turned off by the external control, the K ₁ terminal is disconnected from V _SS , and the voltage dividing circuit composed of the first resistor R1 and the second resistor R2 is divided, and K ₁ ' is high, K ₁ 'The input interface K ₁ " is input to the calculation control unit after the one-way control switch. At this time, K ₁ " and K ₁ ' are also high, and the calculation control unit considers that the corresponding switch bit of the external switch circuit unit is "1".

Example 5:

Referring to FIG. 9, a plurality of conductive contacts on a specific bonding surface in the embodiment are distributed on two concentric circles, and the two concentric circles are respectively recorded as concentric circles A and concentric circles B. .

The specific bonding surface may be a circular surface or a toroidal surface, which is divided into three sector-shaped regions, and each of the sector-shaped regions corresponds to a central angle of 120°. Preferably, the electrically conductive contacts (four, black) on the concentric circle A are connected to Vss. Conductive contacts (4, gray) on a concentric circle B interact with the RFID chip switch input port _{_{_{K 1, K 2, K 3}}} , is connected to K _4. Regardless of the manner in which the metal is grounded in contact with the electrically conductive contact (gray) on the concentric circle B on a particular bonding surface, the electrical connection of the electrically conductive contact (gray) is altered.

Preferably, referring to Fig. 10, a combination of a specific bonding surface (Fig. 9) may be a wafer. The disc is divided into three fan-shaped areas, each of which corresponds to a central angle of 120°, and each sector-shaped area is randomly distributed with four conductive contacts, and these conductive contacts are simultaneously attached to the contract center A and concentric circles. The electrically conductive contacts on B, such that the concentric circles A and the electrically conductive contacts on the concentric circles B are randomly connected, that is, the electrically conductive contacts (gray) of the concentric circles B are randomly grounded, thus changing the electrically conductive The contact (gray) electrical connection relationship, the interactive switch input port generates status bit information that can be read by the RFID chip. Preferably, the electrically conductive contacts on the wafer (Fig. 10) are distributed on a concentric circle, and when combined with a particular bonding surface, the concentric circle covers a first concentric circle and a second concentricity on a particular bonding surface. The area where the circle is located. The potential signal appearing at this time is "0, 1, 2, 3, or 4".

Example 6

In particular, the RFID electronic tags described in the above embodiments 1-5 are all NFC electronic tags of 13.56 MHz frequency. Or an 800/900MHz UHF frequency electronic tag. Or it is a 2.45GHz microwave segment electronic tag.

Example 7

This embodiment discloses a double-sided electronic tag having a state input contact. Referring to FIG. 13, the electronic tag is a one-piece body, and an RFID chip with an interactive switch input port and an RF antenna are packaged therein.

Referring to Figures 23 and 24, the RFID chip with an interactive switch input port includes at least a radio frequency interface circuit unit, a calculation control unit, and an input interface circuit unit. When the RFID reader reads the RFID chip, the calculation control unit reads status information generated by the input interface circuit unit.

The upper and lower surfaces of the electronic tag shown in Fig. 13 are two specific bonding faces. The two specific bonding faces include a plurality of electrically conductive contacts (black dots in the figure) that are respectively connected to the input interface circuit unit. In an embodiment, the electrically conductive contacts are respectively connected to the K1 to K6 terminals of the input interface circuit unit.

Example 8

The outer surface of the electronic tag has two specific bonding faces. The specific bonding surface includes a plurality of electrically conductive contacts that are respectively connected to the input interface circuit unit.

In this embodiment, the two sides of the RFID chip are circular specific joint surfaces, and the two sides of the RFID chip may also be a specific joint surface of the ring shape. The two specific bonding faces can be as shown in FIG. 3, FIG. 4, FIG. 17, or FIG. The two specific bonding faces may be the same or different.

For example, Figures 15 and 16, respectively, are two specific joint faces of an electronic tag. Both of these specific joint faces adopt a scheme of a specific joint plane I, where i=2 and i=3.

A plurality of conductive contacts on one of the specific bonding faces are distributed in a plurality of arcuate contacts on two concentric circles. The two concentric circles are in order of the first concentric circle and the second concentric circle according to the radius from large to small. Three concentric arc contacts are distributed on each concentric circle, and the contacts on adjacent concentric circles are not in contact and are not grounded. All of the electrically conductive contacts on the first concentric circle are connected to the K ₁ terminal of the input interface circuit unit, and all of the electrically conductive contacts on the second concentric circle are connected to the K ₂ terminal. The K ₁ , K ₂ terminals are interactive switch input port bits of the RFID chip. On this particular joint surface, the circular area enclosed by all the contacts is divided into three areas, each of which corresponds to a central angle of 120°, and each area is equally divided into four sub-areas, that is, ten Two sub-areas, each corresponding to a central angle of 30°. In the first sub-area, there are no contacts on the first and second concentric circles. In the second sub-area, there is no arc contact on the first concentric circle and a contact on the second concentric circle. In the third sub-area, the first and second concentric circles have arc-shaped contacts. In the fourth sub-area, the first concentric circle has a circular arc contact, and the second concentric circle has no contact. In the fifth sub-area, there are no contacts on the first and second concentric circles. In the sixth sub-area, there is no contact on the first concentric circle and a circular arc contact on the second concentric circle. In the seventh sub-area, the first and second concentric circles have arc-shaped contacts. In the eighth sub-area, the first concentric circle has a circular arc contact, and the second concentric circle has no contact. In the ninth sub-area, there are no contacts on the first and second concentric circles. In the tenth sub-area, there is no contact on the first concentric circle and a circular arc contact on the second concentric circle. In the eleventh sub-area, the first and second concentric circles have arc-shaped contacts. In the twelfth sub-area, the first concentric circle has a circular arc contact, and the second concentric circle has no contact. The arc angle corresponding to each arcuate contact on it is 30°.

On the other specific bonding surface, the three concentric circles are in order of the third concentric circle, the fourth concentric circle and the fifth concentric circle according to the radius from large to small. Each segment of the concentric circle is distributed with a plurality of arcuate contacts, the contacts on adjacent concentric circles are not in contact, and the arcuate contacts on the concentric circles are not electrically conductive with the circular center of the specific bonding surface where they are located. Point contact. All of the contacts on the terminal K ₃ connected to a third concentric circle, all connection contacts on the concentric circle K ₄ of the fourth terminal, a fifth concentric contacts on all connected terminals K _5. The K ₃ , K ₄ , K ₅ terminals are interactive switch input port bits of the RFID chip. The circular area enclosed by all the contacts is divided into three sector-shaped areas, each of which corresponds to a central angle of 120°, and each sector is divided into eight sub-areas, that is, there are twenty-four sub-areas The center angle corresponding to each sub-area is 15°. Each area is routed in accordance with the three-digit binary code. In the first sub-area, there are no contacts on the third, fourth, and fifth concentric circles. In the second sub-area, the third concentric circle has a circular arc contact, and the fourth and fifth concentric circles have no contact. In the third sub-area, there are no contacts on the third and fourth concentric circles, and circular arc contacts on the fifth concentric circle. In the fourth sub-area, the third and fifth concentric circles have arc-shaped contacts, and the fourth concentric circles have no contacts. In the fifth sub-area, the third, fourth, and fifth concentric circles have arc-shaped contacts. In the sixth sub-area, the third and fourth concentric circles have circular arc contacts, and the fifth concentric circles have no contacts. In the seventh sub-area, there are no contacts on the third and fifth concentric circles, and circular arc contacts on the fourth concentric circle. In the eighth sub-area, there is no contact on the third concentric circle, and a circular arc contact on the fourth and fifth concentric circles. In the ninth sub-area, there are no contacts on the third, fourth, and fifth concentric circles. In the tenth sub-area, the third concentric circle has a circular arc contact, and the fourth and fifth concentric circles have no contact. In the eleventh sub-area, there are no contacts on the third and fourth concentric circles, and circular arc contacts on the fifth concentric circle. In the twelfth sub-area, the third and fifth concentric circles have arc-shaped contacts, and the fourth concentric circles have no contacts. In the thirteenth sub-area, the third, fourth, and fifth concentric circles have arc-shaped contacts. In the fourteenth sub-area, the third and fourth concentric circles have arc-shaped contacts, and the fifth concentric circles have no contacts. In the fifteenth sub-area, there are no contacts on the third and fifth concentric circles, and circular arc contacts on the fourth concentric circle. In the sixteenth sub-area, there is no contact on the third concentric circle, and a circular arc contact on the fourth and fifth concentric circles. In the seventeenth sub-area, there are no contacts on the third, fourth and fifth concentric circles. In the eighteenth sub-area, the third concentric circle has a circular arc contact, and the fourth and fifth concentric circles have no contact. In the nineteenth sub-area, there are no contacts on the third and fourth concentric circles, and circular arc contacts on the fifth concentric circle. In the twentieth sub-area, the third and fifth concentric circles have arc-shaped contacts, and the fourth concentric circles have no contacts. In the twenty-first sub-area, the third, fourth, and fifth concentric circles have arc-shaped contacts. In the twenty-second sub-area, the third and fourth concentric circles have arc-shaped contacts, and the fifth concentric circles have no contacts. In the twenty-third sub-area, there are no contacts on the third and fifth concentric circles, and circular arc contacts on the fourth concentric circle. In the twenty-fourth sub-area, there is no contact on the third concentric circle, and a circular arc contact on the fourth and fifth concentric circles. The arc angle corresponding to each arcuate contact on it is 15°.

Referring to Figure 19, each of the two specific bonding faces of the electronic tag is combined with a single wafer. Three radially extending metal branches radiating from the center of the disc. Of these three metal branches, the angle between adjacent branches is 120°. These metal branches are grounded (it may also be a metal point of the center of a specific bonding surface, and the metal branch is grounded when a specific bonding surface is bonded to the center of the metal branch).

According to the situation shown in Figures 15 and 16, when the metal branch is attached, the probability of occurrence of each status bit is the same, and the potential signal appearing is "11, 10, 00 or 01 (one of which is produced by a specific joint surface). And "", 111, 011, 110, 010, 000, 001, 101 or 100 (produced by another specific joint)" are randomly combined.

Example 9

In this embodiment, the two sides of the RFID chip are circular specific joint surfaces, and the two sides of the RFID chip may also be a specific joint surface of the ring shape. The two specific bonding faces are different, wherein one specific bonding face adopts a specific bonding surface I scheme, and the other specific bonding surface adopts a specific bonding surface II scheme.

One of the specific bonding faces can be as shown in FIG. 15, FIG. 16, FIG. 17, or FIG. Another specific bonding surface can be Figure 21.

For example, FIG. 16 is one of the specific bonding faces, and the plurality of conductive contacts on the specific bonding surface are distributed in a plurality of arcuate contacts on two concentric circles. The two concentric circles are in order of the first concentric circle and the second concentric circle according to the radius from large to small. Three concentric arc contacts are distributed on each concentric circle, and the contacts on adjacent concentric circles are not in contact and are not grounded. All of the electrically conductive contacts on the first concentric circle are connected to the K ₁ terminal of the input interface circuit unit, and all of the electrically conductive contacts on the second concentric circle are connected to the K ₂ terminal. The K ₁ , K ₂ terminals are interactive switch input port bits of the RFID chip. The circular area enclosed by all the contacts on this particular bonding surface is divided into three areas, each of which corresponds to a central angle of 120°, and each area is divided into four sub-areas, that is, there are twelve sub-areas The area, each sub-area corresponds to a central angle of 30°. In the first sub-area, there are no contacts on the first and second concentric circles. In the second sub-area, there is no arc contact on the first concentric circle and a contact on the second concentric circle. In the third sub-area, the first and second concentric circles have arc-shaped contacts. In the fourth sub-area, the first concentric circle has a circular arc contact, and the second concentric circle has no contact. In the fifth sub-area, there are no contacts on the first and second concentric circles. In the sixth sub-area, there is no contact on the first concentric circle and a circular arc contact on the second concentric circle. In the seventh sub-area, the first and second concentric circles have arc-shaped contacts. In the eighth sub-area, the first concentric circle has a circular arc contact, and the second concentric circle has no contact. In the ninth sub-area, there are no contacts on the first and second concentric circles. In the tenth sub-area, there is no contact on the first concentric circle and a circular arc contact on the second concentric circle. In the eleventh sub-area, the first and second concentric circles have arc-shaped contacts. In the twelfth sub-area, the first concentric circle has a circular arc contact, and the second concentric circle has no contact. The arc angle corresponding to each arcuate contact on it is 30°.

Referring to Fig. 19, a combination of the above specific bonding faces is a wafer. Three radially extending metal branches radiating from the center of the disc. Of these three metal branches, the angle between adjacent branches is 120°. These metal branches are grounded (it may also be a metal point of the center of a specific bonding surface, and the metal branch is grounded when a specific bonding surface is bonded to the center of the metal branch).

When the wafers are separated from the respective specific bonding faces, the arc contacts are not connected to V _SS (both are not grounded), and all of the K _i terminals are high, which is denoted as "1". When the specific bonding surface I (the same is true for the specific bonding surface II), when the wafer is in contact with the wafer, the K _i terminal corresponding to some of the circular arc contacts is low, and is denoted as "0". When the bonding, the arc contacts on some concentric circles on the specific bonding surface I do not contact the metal branches, and the terminals corresponding to the arc contacts are high, and are recorded as "1".

Referring to Fig. 23, a plurality of electrically conductive contacts on another specific bonding surface are a plurality of arcuate contacts distributed on two concentric circles, which are respectively recorded as concentric circles A and concentric circles B. The specific joint surface is a circular surface which is divided into three sector-shaped regions, and each of the sector-shaped regions corresponds to a central angle of 120°. Preferably, the electrically conductive contacts (four, black) on the concentric circle A are connected to Vss. B can be concentric conductive contacts (4, gray) to interact with the RFID chip switch input port _{_{_{K 1, K 2, K 3}}} , is connected to K _4.

Regardless of the manner in which the metal is grounded in contact with the electrically conductive contact (gray) of the concentric circle B on a particular bonding surface, the electrical connection of the electrically conductive contact (gray) is altered.

Preferably, referring to Fig. 22, in combination with another specific bonding surface (Fig. 21) may be a wafer. The disc is divided into three fan-shaped areas, each of which corresponds to a central angle of 120°, and each sector-shaped area is randomly distributed with four conductive contacts, and these conductive contacts are simultaneously attached to the contract center A and concentric circles. The electrically conductive contacts on B, such that the concentric circles A and the electrically conductive contacts on the concentric circles B are randomly connected, that is, the electrically conductive contacts (gray) of the concentric circles B are randomly grounded, thus changing the electrically conductive The contact (gray) electrical connection relationship, the interactive switch input port generates status bit information that can be read by the RFID chip. Preferably, the electrically conductive contacts on the wafer (Fig. 22) are distributed on a concentric circle. When combined with a specific bonding surface, the concentric circle covers the concentric circle A and the concentric circle B on the specific bonding surface. Area.

According to the above situation, when two specific bonding faces of the electronic tag are randomly attached, the potential signal appearing is "11, 10, 00 or 01 (one of which is produced by a specific bonding face)" and "0, 1" , 2, 3, 4 (produced by another specific joint) "random combination.

Example 10:

The main part of this embodiment is the same as any one of the

embodiments

2 or 3, and a specific input interface circuit unit as shown in FIG. 24 is additionally provided. The input interface circuit unit comprises a first resistor R1, second resistor R2, the unidirectional control switch and a switching control bits C _1. The first resistor R1 and the second resistor R2 form a voltage dividing circuit. One end of the first resistor R1 is connected to the power source V _DD , and the other end is divided into two paths. One of the two resistors is connected in series with the second resistor R2 and then passes through the external switch of the chip. _{After C1} , grounding V _SS , and the other connected one-way control switch is controlled by the control unit C _{1 of the} control unit and then connected to the input interface of the calculation control unit. The two ends of the one-way control switch are respectively K ₁ ' and K ₁ ' terminals. One end of the external switch K _C1 and the second resistor R2 is a K ₁ terminal.

Example 11

In particular, the RFID electronic tags described in the above embodiments 7-10 are all NFC electronic tags of 13.56 MHz frequency. Or an 800/900MHz UHF frequency electronic tag. Or it is a 2.45GHz microwave segment electronic tag.

Claims

An electronic tag having a state input contact, comprising: an RFID chip and an RF antenna with an interactive switch input port enclosed in the electronic tag;

The RFID chip with an interactive switch input port includes at least a radio frequency interface circuit unit, a calculation control unit, and an input interface circuit unit; when the RFID reader reads the RFID chip, the calculation control unit reads the input interface circuit Status information generated by the unit;

The outer surface of the electronic tag has a specific bonding surface; the specific bonding surface includes a plurality of electrically conductive contacts, and the electrically conductive contacts are respectively connected to the input interface circuit unit or ground;

The state information generated by the input interface circuit unit is changed by changing the electrical connection relationship of the electrically conductive contacts.
The electronic tag with a status input contact according to claim 1, wherein the computing control unit reads the status information and transmits the status information by the radio frequency interface circuit unit through the radio frequency antenna;

Alternatively, when the storage unit included in the RFID chip has stored information, the calculation control unit reads the status information, processes the stored information according to the status information, and processes the processed information by the radio frequency interface circuit unit through the radio frequency antenna. Send out.
The electronic tag with a state input contact according to claim 1, wherein the conductive geometrical pattern of the plurality of electrically conductive contacts on the specific bonding surface is distributed over a plurality of concentric circles Arc contact

The i concentric circles are first concentric circles, second concentric circles, ..., i-th concentric circles according to the radius from large to small; each segment of the concentric circles is distributed with a plurality of arc-shaped contacts on adjacent concentric circles. The contacts are not in contact;

All of the electrically conductive contacts on the first concentric circle are connected to the K 1 terminal of the input interface circuit unit, and all of the electrically conductive contacts on the second concentric circle are connected to the K 2 terminal, ..., on the i-th concentric circle All of the conductive contacts are connected to the K i terminal; the K 1 , K 2 , ..., K n terminals are the interactive switch input port bits of the RFID chip, i and n are natural numbers, i ≤ n.
The electronic tag with a state input contact according to claim 3, wherein the specific bonding surface is a circular surface or a circular surface; the specific bonding surface is divided into m 1 sector regions, each sector region The corresponding central angle is 360°/m 1 , and each sector is divided into t 1 sub-regions; where m 1 and t 1 are natural numbers, t 1 = 2 i , where t 1 sub-regions are on each concentric circle The conductive contacts are randomly distributed or distributed in a corresponding i-bit binary code, and in the m 1 regions, the conductive contacts on each concentric circle are distributed in the same manner.
An electronic tag having a state input contact according to claim 1, wherein the conductive geometrical pattern of the plurality of electrically conductive contacts on the specific bonding surface is distributed over two concentric circles Arc contact

The specific bonding surface is a circular surface or a circular surface; one of the concentric circles has m 2 × j segment arc contacts, and the arc contacts are divided into m 2 groups to form m 2 sectors of the same shape, each Each sector has j arc contacts, and the layout and arrangement of the arc contacts are the same in each sector, and the arc contacts of each sector are respectively associated with the interactive switch input port of the RFID chip. Bits K 1 , K 2 , . . . , K j are connected; the K 1 , K 2 , . . . , K n terminals are interactive switch input port bits of the RFID chip, and j and n are natural numbers, j≤n.

All the contacts on the other concentric circle are connected to the ground.
The electronic tag with a state input contact according to claim 5, wherein two concentric circles of the conductive contact on the specific bonding surface are respectively recorded as concentric circles A and concentric circles B; The specific bonding surface is a circular surface or a circular surface, which is divided into m 2 fan-shaped regions, and m 2 is a natural number; a central angle corresponding to each sector region is 360°/m 2 ;

Wherein all of the electrically conductive contacts on the concentric circle A are permanently grounded, and all of the electrically conductive contacts on the concentric circle B are not permanently grounded;

Alternatively, all of the electrically conductive contacts on the concentric circle B are permanently grounded, and all of the electrically conductive contacts on the concentric circle A are not permanently grounded.
The electronic tag with a state input contact according to any one of claims 1 to 6, wherein the electrical connection relationship is an on-off relationship between the conductive contact and the ground point.
The electronic tag with a state input contact according to any one of claims 1 to 6, wherein a plurality of electrically conductive contacts on the specific bonding surface are arranged to be regularly electrically conductive. a geometry having at least one permanent ground contact thereon;

All conductive contacts are not directly connected to the permanent ground contact; The external component randomly attached to the specific bonding surface randomly changes the electrical connection relationship between all or a part of the conductive contact and the permanent ground contact, that is, the electrical connection relationship of the conductive contact is changed, thereby making the input interface circuit unit The resulting status information changes.
The electronic tag with a state input contact according to claim 8, wherein when the specific bonding surface is circular, the permanent ground contact is a circular contact at a center of a concentric circle, Or the permanent ground contact is a circular ring contact or a plurality of arcuate contacts having a radius different from all concentric circles of the electrically conductive contacts connected to the input interface circuit unit and concentric with all concentric circles;

When the specific bonding surface is annular, the permanent grounding contact is a circular ring contact or segments having a radius different from all concentric circles of the electrically conductive contacts connected to the input interface circuit unit and concentric with all concentric circles Arc contact.
The electronic tag with a state input contact according to any one of claims 1 to 6, wherein when the external component and the specific bonding surface are randomly attached together, the specific bonding surface is made The conductive geometry is randomly matched, and the interactive switch input port collects a set of initial status bit information;

When the external component is separated from the specific bonding surface and re-adhered, the conductive geometry on the specific bonding surface is again randomly matched, and the interactive switch input port re-collects a set of status bit information;

After the initial status bit information is formed as described above, if the application system reads that the status bit information of the electronic tag is not the initial status bit information, the application system will recognize the external component as described above and the specific combination. The face has been separated.
A double-sided electronic tag having a state input contact, comprising: an RFID chip and an RF antenna with an interactive switch input port enclosed in the electronic tag;

The RFID chip with an interactive switch input port includes at least a radio frequency interface circuit unit, a calculation control unit, and an input interface circuit unit; when the RFID reader reads the RFID chip, the calculation control unit reads the input interface circuit Status information generated by the unit;

The outer surface of the electronic tag has two specific bonding faces; the specific bonding surface includes a plurality of conductive contacts, and the conductive contacts are respectively connected to the input interface circuit unit or ground;

The state information generated by the input interface circuit unit is changed by changing the electrical connection relationship of the electrically conductive contacts.
The double-sided electronic tag with a state input contact according to claim 11, wherein the reading control unit reads the state information, and then sends the state information to the outside through the radio frequency antenna by the radio frequency interface circuit unit;

Alternatively, when the storage unit included in the RFID chip has stored information, the calculation control unit reads the status information, processes the stored information according to the status information, and processes the processed information by the radio frequency interface circuit unit through the radio frequency antenna. Send out.
A double-sided electronic tag with a state input contact according to claim 11, wherein a plurality of electrically conductive contacts on said specific bonding surface are arranged in a regular conductive geometry, and are externally attached. The electrical conductor or conductive geometry is used to change the electrical connection relationship of the conductive geometry on the particular bonding surface such that the state information generated by the input interface circuit unit changes.
A double-sided electronic tag with a state input contact according to claim 11, wherein two specific bonding faces of the electronic tag are randomly combined by two specific bonding faces, that is, two specific bonding faces are a specific bonding surface I, or two specific bonding surfaces are specific bonding surfaces II, or one of the surfaces is a specific bonding surface I, the other surface is a specific bonding surface II;

The conductive geometrical pattern formed by the plurality of conductive contacts on the specific bonding surface I is a plurality of circular arc contacts distributed on i concentric circles; the i concentric circles are sequentially according to the radius from large to small a first concentric circle, a second concentric circle, ..., an i-th concentric circle; each of the concentric circles is distributed with a plurality of arcuate contacts, and contacts on adjacent concentric circles are not in contact;

The conductive geometry formed by the plurality of conductive contacts on the specific bonding surface II is distributed on two concentric circles, which are respectively recorded as concentric circles A and concentric circles B.
A double-sided electronic tag with a state input contact according to claim 14, wherein the specific bonding surface I is a circular or annular surface; and is divided into m 1 sectors having the same layout, each The sector area is divided into t 1 sub-regions; wherein m 1 and t 1 are natural numbers, t 1 = 2 i , in which t 1 sub-regions, the conductive contacts on each concentric circle are randomly distributed or according to the corresponding i-bit a binary coded distribution; the specific bonding surface I has at least one permanent grounding contact; the permanent grounding contact is a circular contact at a center of a concentric circle, or a radius different from all of the wiring devices having a connection input interface i concentric circles of electrically conductive contacts and annular contacts concentric with all i concentric circles;

The specific joint surface II is a circular surface or a circular surface; it is divided into m 2 sectors having the same layout, and the conductive contacts on the specific joint surface II are m 2 × j arc contacts distributed on the concentric circle A; The contact on the concentric circle B is grounded;

Wherein, the i concentric circles on the specific bonding surface I are sequentially recorded as a first concentric circle, a second concentric circle, ..., an i-th concentric circle according to a radius from large to small; the specific bonding surface II is concentric The j arc contacts on each sector of the circle A are sequentially recorded as the first arc contact, the second arc contact, ..., the jth arc contact;

All of the electrically conductive contacts on the first concentric circle are connected to the K 1 terminal of the input interface circuit unit, and all of the electrically conductive contacts on the second concentric circle are connected to the K 2 terminal, ..., all on the i-th concentric circle The conductive contact is connected to the K i terminal, and all the conductive contacts on the first arc contact are connected to the K i+1 terminal, ..., all the conductive contacts on the jth arc contact are connected to the K i+j terminal The K 1 , K 2 , . . . , K n terminals are the interactive switch input port bits of the RFID chip, and i, j, and n are natural numbers, and i+j≤n.
A double-sided electronic label having a state input contact according to claim 15 wherein:

m 1 ≥1, m 2 ≥1;

t 1 ≥ 2, t 2 ≥ 2;

i=2, j=2, or i=3, j=3, or i=2, j=3, or i=3, j=2.
The double-sided electronic tag with a state input contact according to any one of claims 11 to 15, wherein the electrical connection relationship is an on-off relationship between the conductive contact and the grounding point.
A double-sided electronic label having a state input contact according to any one of claims 11 to 15, wherein when the external component is randomly attached to the specific bonding surface, a specific combination is made The conductive geometry on the surface is randomly attached, and the interactive switch input port collects a set of initial status bit information;

When the external component is separated from the specific bonding surface and re-adhered, the conductive geometry on the specific bonding surface is again randomly matched, and the interactive switch input port re-collects a set of status bit information;

After the initial status bit information is formed as described above, if the application system reads that the status bit information of the electronic tag is not the initial status bit information, the application system will recognize the external component as described above and the specific combination. The face has been separated.
A double-sided electronic label having a state input contact according to any one of claims 11 to 15, wherein the electronic label is a circular sheet or a ring sheet, and its two specific The bonding faces are the upper and lower surfaces of the electronic tag, respectively.
A double-sided electronic tag having a state input contact according to any one of claims 1 to 6, 11 to 15, wherein the RFID electronic tag is an NFC electronic tag having a frequency of 13.56 MHz; or It is an 800/900MHz ultra-high frequency electronic tag; or a 2.45GHz microwave segment electronic tag.