CN207082126U - The radio frequency chip with label removal prevention function based on electric circuit inspection - Google Patents
The radio frequency chip with label removal prevention function based on electric circuit inspection Download PDFInfo
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- CN207082126U CN207082126U CN201720514554.2U CN201720514554U CN207082126U CN 207082126 U CN207082126 U CN 207082126U CN 201720514554 U CN201720514554 U CN 201720514554U CN 207082126 U CN207082126 U CN 207082126U
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Abstract
The utility model discloses a kind of radio frequency chip with label removal prevention function based on electric circuit inspection, including electrical parameter detection circuit outside chip, pin 1, pin 2, pin 1 and pin 2 can be connected with the antenna on piece outer package base material, circuit is detected by encapsulation parameter in piece, resistance value on measurable outer package base material antenna, and label chip can record this resistance value by internal digital base band control module, as long as encapsulation parameter detection circuit detects and judges that the outer parameter resistance value of piece is different from original record resistance in upper electrical chip every time, just lower electricity is stopped chip automatically.The utility model can prevent chip from being taken off from initial encapsulating antenna, repeat the purpose of encapsulation, play a part of RF tag product false proof.
Description
Technical field
The utility model belongs to IC design field, and in particular to a kind of having based on chip internal circuits detection
The radio electronic label chip of label removal prevention function.
Background technology
With the rapid development of microelectric technique, CMOS technology can manufacture the chip applied to microwave band, radio frequency electrical
Road can be integrated on the chip of large scale digital circuit.It will be opened more with the low-cost wireless system that CMOS technology manufactures
Broad application field.RFID tag is exactly an extraordinary application field of prospect.
When bar code is pushed out within 1973, its inventor once foretold：After 25 years, there will be a kind of new technology to replace
For bar code.Now, RFID tag has been gone in face of people.It is not only the simple substitute of bar code, more can
The up-to-date information technologies such as comprehensive wireless communication, microelectronics, internet, all national products are carried out from producing, selling and uying very
Whole process supervision management is carried out to recycling, is greatly enhanced the running efficiency of entire society.
The working frequency range of RFID tag includes, and 1：Low frequency tags working frequency is in 30kHz-300kHz, typical work
Working frequency has：125kHz, 133kHz.2：High-frequency label working frequency is in 3MHz-30MHz, typical working frequency
13.56MHz.3：Ultrahigh-frequency tag working frequency is more than 400MHz, typical operating frequency 915MHz, 2.45GHz, 5.8GHz.
RFID tag is divided into passive and active RFID tag according to chip power supply mode.
Anti-counterfeiting technology mainly has chip algorithm encryption in the prior art, antenna material physics tamper-evident, in practical application, adopts
The connection that can be destroyed between chip and antenna with special solvent or acid, after chip is removed, re-works one layer of label antenna,
It is also feasible that chip package is Resealed on antenna material, is not thus avoided that because chip is removed, Reseals
The problem of causing label to be imitated and be used again.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of has label removal prevention function based on electric circuit inspection
Radio frequency chip, for solving the problems, such as that chip can not be re-enclosed use after being pulled down from label antenna.
To realize object above, the utility model is achieved by the following technical programs：One kind is based on chip internal electricity
The radio electronic label chip with label removal prevention function of road detection, including electrical parameter detection circuit, pin 1, pin outside chip
2, outer electrical parameter detection circuit is provided with power supply, and power supply is connected with pin 1 side by side with voltage comparator, and pin 1 and pin 2 are side by side
It is connected with antenna.
Further, can series resistance between the pin 1 and pin 2.
Further, the resistance quantity is at least 1.
Further, the antenna is arranged on outer package base material.
Further, the base material can be PET, PI, FR-4 glass-fiber-plate or art paper.
The utility model beneficial effect：It can prevent chip from being taken off from initial encapsulating antenna, repeat the purpose of encapsulation,
Play a part of RF tag product false proof.
Brief description of the drawings
Fig. 1 is the label chip schematic diagram that can monitor chip outer package parameter；
Fig. 2 is the label chip detection circuit diagram that can monitor chip outer package parameter；
Fig. 3 is that radio frequency tag chip anti-rotation is shifted elsewhere for garrison duty tseudo circuit schematic diagram.
Embodiment
Content of the present utility model is to propose a kind of radio frequency core with label removal prevention function based on electric circuit inspection
Piece such as Fig. 1, by increasing piece outer package electrical parameter detection circuit (10), and package pins 1 inside existing radio frequency tag chip
(11), pin 2 (12).Piece outer package electrical parameter detection circuit (10) including a chip internal current source (13) as shown in Fig. 2 produce
Raw circuit and a voltage comparator (14), current source (13) and voltage comparator (14) are connected on pin 1 (11) jointly.
Content of the present utility model is to propose a kind of radio electronic label based on chip internal circuits detection as schemed
3, generally include the outer matching network (5) of antenna (4), piece, rectification circuit (6), current generating module (7), receive and send (8),
Digital baseband control module (9).Chip in Fig. 1 is packaged into after label with antenna (4), pin 1 (11) and pin 2 (12) meeting
It is connected with the antenna (4) on piece outer package base material, chip can be surveyed once being powered by piece outer package electrical parameter detection circuit (10)
Measure piece outer package base material on antenna (4) off chip resistor (15) parameter value, off chip resistor (15) quantity because antenna (4) material without
Together, at least connect 1 off chip resistor (15).Chip is connected with antenna (4) by matching network outside piece (5), and whole circuit is by electricity
The operation of rectification circuit (6) control circuit detection of source generation module (7).Packaging base material on above-mentioned antenna (4) can be
PET, PI, FR-4 glass-fiber-plate or art paper, the material of one layer of conductive materials can be adhered on glass-fiber-plate or art paper, using print
The modes such as brush, etching, sputtering, the conductive material on base material is formed into antenna pattern on request, antenna (4) loop has one really
Fixed resistance value, and because material deviation and packaging technology error, the resistance number of each antenna (4) connection are different.
When electronic label chip is removed from initial antenna (4), and encapsulation utilizes again, due to antenna (4) material and envelope
The difference of resistance value caused by filling fabrication error, when upper electric again, chip inner sheet outer package electrical parameter detection circuit (10) is as long as inspection
Survey and judge that off chip resistor parameter (15) is different from original record resistance, just lower electricity is stopped chip automatically, and reaching prevents core
Piece takes off the purpose of repetition encapsulation from initial encapsulating antenna (4), plays a part of RF tag product false proof.
It is a kind of specific implementation process of the radio frequency chip with label removal prevention function based on electric circuit inspection below：
S1：Chip package into after label, contact by pin 1 (11), pin 2 (12) and labei sheet off chip resistor (15) encapsulation.
S2：Off chip resistor (15) value is detected by piece outer package electrical parameter detection circuit (10), resistance value is material resistance, envelope
The sums such as contact resistance are filled, and this value is recorded in chip internal.
S3：If label chip occurs in use to peel off from antenna (4) base material, and Reseal, label core
Piece can detect off chip resistor parameter (15) by pin 1 (11), pin 2 (12) and piece outer package electrical parameter detection circuit (10),
And compared with initial value.
S4：Chip slapper outer package electrical parameter detection circuit (10) detects and judges that off chip resistor parameter (15) hinders with original record
Value is different, chip lower power-off work automatically.
The present specification is described in terms of embodiments, but not each embodiment only includes an independent technical side
Case, this narrating mode of specification is only that those skilled in the art should be whole using specification as one for clarity
Body, the technical solutions in the various embodiments may also be suitably combined, formed it will be appreciated by those skilled in the art that other implementation
Mode.
Claims (5)
1. a kind of radio frequency chip with label removal prevention function based on electric circuit inspection, including electrical parameter detection circuit, pipe outside chip
Pin 1, pin 2, it is characterised in that the outer electrical parameter detection circuit is provided with power supply, power supply and voltage comparator side by side with pin 1
It is connected, pin 1 and pin 2 are connected with antenna side by side.
2. a kind of radio frequency chip with label removal prevention function based on electric circuit inspection according to claim 1, its feature
It is, can series resistance between the pin 1 and pin 2.
3. a kind of radio frequency chip with label removal prevention function based on electric circuit inspection according to claim 1, its feature
It is, resistance quantity is at least 1.
4. a kind of radio frequency chip with label removal prevention function based on electric circuit inspection according to claim 1, its feature
It is, the antenna is arranged on outer package base material.
5. a kind of radio frequency chip with label removal prevention function based on electric circuit inspection according to claim 1, its feature
It is, base material can be PET, PI, FR-4 glass-fiber-plate or art paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720514554.2U CN207082126U (en) | 2017-05-10 | 2017-05-10 | The radio frequency chip with label removal prevention function based on electric circuit inspection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720514554.2U CN207082126U (en) | 2017-05-10 | 2017-05-10 | The radio frequency chip with label removal prevention function based on electric circuit inspection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207082126U true CN207082126U (en) | 2018-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201720514554.2U Active CN207082126U (en) | 2017-05-10 | 2017-05-10 | The radio frequency chip with label removal prevention function based on electric circuit inspection |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108596315A (en) * | 2018-05-11 | 2018-09-28 | 上海宜链物联网有限公司 | A kind of RFID label chip circuit for preventing from reusing after tearing to pieces |
| CN109492737A (en) * | 2018-12-27 | 2019-03-19 | 上海天臣防伪技术股份有限公司 | RFID chip, RFID electronic label, commodity |
| CN110263898A (en) * | 2019-07-19 | 2019-09-20 | 云南纳光科技有限公司 | The passive NFC anti-counterfeiting chip of anti-tamper detection is realized by detecting network resistor |
| CN110288072A (en) * | 2019-07-19 | 2019-09-27 | 云南纳光科技有限公司 | By the way that power source can be activated to realize the NFC anti-counterfeiting chip of anti-tamper detection function |
| CN111080934A (en) * | 2019-12-18 | 2020-04-28 | 大唐半导体科技有限公司 | Anti-dismantling circuit for refueling tax control machine and processing method thereof |
| CN112016657A (en) * | 2020-08-31 | 2020-12-01 | 上海天俣可信物联网科技有限公司 | RFID tag chip circuit for preventing secondary utilization and method thereof |
-
2017
- 2017-05-10 CN CN201720514554.2U patent/CN207082126U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108596315A (en) * | 2018-05-11 | 2018-09-28 | 上海宜链物联网有限公司 | A kind of RFID label chip circuit for preventing from reusing after tearing to pieces |
| CN108596315B (en) * | 2018-05-11 | 2021-07-13 | 上海宜链物联网有限公司 | RFID label chip circuit capable of preventing repeated use after tearing |
| CN109492737A (en) * | 2018-12-27 | 2019-03-19 | 上海天臣防伪技术股份有限公司 | RFID chip, RFID electronic label, commodity |
| CN110263898A (en) * | 2019-07-19 | 2019-09-20 | 云南纳光科技有限公司 | The passive NFC anti-counterfeiting chip of anti-tamper detection is realized by detecting network resistor |
| CN110288072A (en) * | 2019-07-19 | 2019-09-27 | 云南纳光科技有限公司 | By the way that power source can be activated to realize the NFC anti-counterfeiting chip of anti-tamper detection function |
| CN111080934A (en) * | 2019-12-18 | 2020-04-28 | 大唐半导体科技有限公司 | Anti-dismantling circuit for refueling tax control machine and processing method thereof |
| CN112016657A (en) * | 2020-08-31 | 2020-12-01 | 上海天俣可信物联网科技有限公司 | RFID tag chip circuit for preventing secondary utilization and method thereof |
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