CN113484721B - Wireless product design production testing device and method for anti-copying plate - Google Patents
Wireless product design production testing device and method for anti-copying plate Download PDFInfo
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- CN113484721B CN113484721B CN202110761121.8A CN202110761121A CN113484721B CN 113484721 B CN113484721 B CN 113484721B CN 202110761121 A CN202110761121 A CN 202110761121A CN 113484721 B CN113484721 B CN 113484721B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 238000012360 testing method Methods 0.000 title claims abstract description 31
- 238000013461 design Methods 0.000 title claims description 12
- 238000000034 method Methods 0.000 title abstract description 10
- RVCKCEDKBVEEHL-UHFFFAOYSA-N 2,3,4,5,6-pentachlorobenzyl alcohol Chemical compound OCC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl RVCKCEDKBVEEHL-UHFFFAOYSA-N 0.000 claims abstract description 45
- 230000005855 radiation Effects 0.000 claims abstract description 12
- 239000000565 sealant Substances 0.000 claims description 5
- 230000011664 signaling Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000010998 test method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/281—Specific types of tests or tests for a specific type of fault, e.g. thermal mapping, shorts testing
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- Engineering & Computer Science (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
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- General Physics & Mathematics (AREA)
- Transceivers (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The invention discloses a device and a method for designing, producing and testing a wireless product of an anti-copying plate, which belong to the technical field of testing and comprise a body PCBA, an antenna module, an equivalent impedance network and a production module, wherein the antenna module comprises an impedance encryption module, a wireless radio frequency port and a radiation module, two ends of the impedance encryption module are respectively connected with the wireless radio frequency port and the radiation module, the body PCBA comprises a chip and a radio frequency port, the body PCBA is connected with the wireless radio frequency port of the antenna module through the radio frequency port, and is also connected with the production module through the equivalent impedance network.
Description
Technical Field
The invention relates to the technical field of testing, in particular to a device and a method for testing the design and production of a wireless product of an anti-copying plate.
Background
Wireless network communication devices are widely used in the current generation, and sales are also getting up. However, electronic products, including wireless products, are more or less at risk of being shoveled. The circuit board machine generally copies the electronic product with excellent hardware performance through the steps of PCBA component separation measurement, PCB layer-by-layer analysis photographing, PCB restoration and the like. The behavior of the shoveling plate is difficult to prevent under the current technical conditions, and causes great disadvantages for excellent hardware design companies.
Generally, the hardware anti-copying board needs to be implanted with a hardware key and an encryption chip.
The traditional anti-copying method is realized by implanting a hardware key and an encryption chip, and without exception, the hardware cost is increased. This results in a decrease in the competitiveness of the product.
Disclosure of Invention
The invention aims to provide a device and a method for designing, producing and testing a wireless product of an anti-copying plate, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The utility model provides a wireless product design production testing arrangement of anti-copying board, includes body PCBA, antenna module, equivalent impedance network and produces and survey the module, antenna module includes impedance encryption module and radiation module, and wireless radio frequency port and radiation module are connected respectively at impedance encryption module both ends, and body PCBA includes chip and radio frequency port, and body PCBA passes through the radio frequency port of radio frequency port connection antenna module's wireless radio frequency port, and body PCBA still produces through equivalent impedance network connection and surveys the module, and body PCBA still passes through the control line connection and produces and survey the module.
As a further aspect of the present invention, the RF port of the body PCBA is designed with an offset characteristic impedance 50R.
As a further aspect of the present invention, the input impedance of the radiation module is 50R.
As a further technical scheme of the invention, the impedance encryption module adopts discrete radio frequency components and adds a switching tube to realize programmable impedance change or RF tunner with an I 2 C control interface.
As a further technical scheme of the invention, the equivalent impedance network is also connected with a programmable control interface, and the impedance of the impedance encryption module can be changed through programming.
As a further technical scheme of the invention, the impedance encryption module is sealed by fixed sealant.
By adopting the device, the radio frequency port of the PCBA is connected to the non-50R end of the equivalent network, and the 50R port of the equivalent impedance network is connected to the production testing module. The production testing module is connected to the PCBA through a control line and controls the PCBA to send and receive packets in a signaling mode, and the production testing module judges whether the index is qualified.
Compared with the prior art, the invention has the beneficial effects that: 1. low cost: the impedance encryption module is only needed without a separate hardware encryption chip, and the simplest design of the impedance encryption module is realized by adopting discrete components and a switching tube, so that the cost is much lower than that of the hardware encryption chip; 2. the encryption is reliable: on the one hand, the sealant or the antenna module control software ensures that the impedance encryption module is not reproducible, so that the antenna is not reproducible, and the performance after the board is copied is very poor (PCBA can only play the hardware performance if being matched with the antenna designed by the system). On the other hand, the port impedance of the PCBA is not 50R, and when an equivalent impedance network is not added, the radio frequency quality is poor, the radio frequency index test cannot be carried out, and the mass production cannot be carried out. After the PCBA is directly turned over by the plate reader, the feasibility of mass production is lost. 3. The production and measurement are simple: the production test topology is only added with one equivalent impedance network, the change is small, and the service life of the production test topology is not affected. 4. Can be mutually encrypted in combination with software: when the programmable impedance encryption module is selected, the software control encryption can be realized, and at the moment, the product using the scheme is to be decrypted, the software and the hardware are required to be decrypted simultaneously, and the difficulty is much higher than that of the software or the hardware which are decrypted independently.
Drawings
Fig. 1 is a structural diagram of a body PCBA.
Fig. 2 is a schematic diagram of connection between the body PCBA and the antenna module.
Fig. 3 is a schematic diagram of product detection.
In the figure: 1-radio frequency link, 2-radio frequency port, 3-body PCBA, 4-chip, 5-antenna module, 6-impedance encryption module, 7-radiation module, 8-equivalent impedance network, 9-production test module, 10-programmable control interface, 11-control line.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-3, embodiment 1: the utility model provides a wireless product design production testing arrangement of anti-copying board, includes body PCBA3, antenna module 5, equivalent impedance network 8 and produces and survey module 9, antenna module 5 includes impedance encryption module 6 and radiation module 7, and wireless radio frequency port and radiation module 7 are connected respectively at impedance encryption module 6 both ends, and body PCBA3 includes chip 4 and radio frequency port 2, and body PCBA3 passes through the wireless radio frequency port that radio frequency port 2 connects antenna module 5, and body PCBA3 still passes through equivalent impedance network 8 and connects and produce and survey module 9, and body PCBA3 still passes through control line 11 and connects and produce and survey module 9.
The radio frequency port (port connected with the antenna) of the body PCBA3 adopts a design deviating from characteristic impedance 50R, and the discrete components on the PCBA are debugged, so that the radio frequency index EVM parameter (under target power) measured by a 50R radio frequency test system at the radio frequency port is compared with a protocol standard deviation 5db, and the impedance seen by a chip is set as x+yj.
Antenna module 5: the two ends of the impedance encryption module 6 are respectively connected with a wireless radio frequency port and the radiation module 7, wherein the input impedance of the radiation module 7 is 50R. The impedance encryption module 6 adjusts the design to achieve the following criteria: when the antenna module 5 is connected to the body PCBA3, the impedance seen from the interface of the impedance encryption module 6-radiation module 7 toward the chip 4 is 50R.
The impedance encryption module 6 can be composed of discrete radio frequency components, can also be added with a switch tube and the like to realize programmable impedance change, and can also be RF tunner with I2C and other control interfaces. The impedance encryption module 6 is sealed by a fixed sealant, so that the internal element structure is necessarily damaged during disassembly.
Equivalent impedance network 8: the adjustment to the rf impedance characteristics corresponds to the impedance encryption module in the antenna module 5.
Antenna module control software (optional): the impedance setting device can be connected with the impedance encryption module 6 and the equivalent impedance network 8 in a butt joint mode, after a series of established characters A are input, the impedance of the impedance encryption module 6 and the equivalent impedance network 8 is stabilized in the setting standards of 1 and 2, and otherwise, the attenuation between the input and the output of the impedance encryption module 6 and the equivalent impedance network 8 is 10dB or more.
When the radio frequency index conduction test of the product is carried out, the test is completed through the following special topology: the radio frequency port of the PCBA is connected to the non-50R end of the equivalent network, and the 50R port of the equivalent impedance network is connected to the production module. The production testing module is connected to the PCBA through a control line and controls the PCBA to send and receive packets in a signaling mode, and the production testing module judges whether the index is qualified.
After the production test, the PCBA is assembled, and the connection between the PCBA and an equivalent impedance network and the production test control line are disconnected; mounting the antenna module and PCBA and other components into the housing; and the radio frequency port is connected with the antenna module and the PCBA.
The invention has the advantages of low cost, reliable encryption, simple production and test and capability of mutually encrypting in combination with software.
1. Low cost: the impedance encryption module is only needed without a separate hardware encryption chip, and the simplest design of the impedance encryption module is realized by adopting discrete components and a switching tube, so that the cost is much lower than that of the hardware encryption chip;
2. The encryption is reliable: on the one hand, the sealant or the antenna module control software ensures that the impedance encryption module is not reproducible, so that the antenna is not reproducible, and the performance after the board is copied is very poor (PCBA can only play the hardware performance if being matched with the antenna designed by the system). On the other hand, the port impedance of the PCBA is not 50R, and when an equivalent impedance network is not added, the radio frequency quality is poor, the radio frequency index test cannot be carried out, and the mass production cannot be carried out. After the PCBA is directly turned over by the plate reader, the feasibility of mass production is lost.
3. The production and measurement are simple: the production test topology is only added with one equivalent impedance network, the change is small, and the service life of the production test topology is not affected.
4. Can be mutually encrypted in combination with software: when the programmable impedance encryption module is selected, the software control encryption can be realized, and at the moment, the product using the scheme is to be decrypted, the software and the hardware are required to be decrypted simultaneously, and the difficulty is much higher than that of the software or the hardware which are decrypted independently.
In embodiment 2, as shown in fig. 3, optionally, the equivalent impedance network is programmable, the programmable control interface is connected to a corresponding interface of the PCBA, and the antenna module control software is implanted in the chip, and the antenna module control software controls the equivalent impedance network, so that when the equivalent impedance network is produced, the impedance characteristic is equal to the impedance characteristic of the impedance encryption module when the impedance encryption module is in normal operation.
The invention also discloses a device and a method for designing and producing the wireless product of the anti-shoveling plate, which are characterized in that a plurality of batteries are connected in parallel to form a parallel battery pack, then the plurality of parallel battery packs are connected in parallel to form a battery string, the plurality of battery strings are connected in series to form the device and the method for designing and producing the wireless product of the anti-shoveling plate, and finally one end of the device and the method for designing and producing the wireless product of the anti-shoveling plate is connected with a total negative interface, and the other end of the device and the method for designing and producing the wireless product of the anti-shoveling plate are connected with a total positive interface.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (2)
1. The utility model provides a wireless product design production testing arrangement of anti-copying board, includes body PCBA (3), antenna module (5), equivalent impedance network (8) and produces and survey module (9), a serial communication port, antenna module (5) include impedance encryption module (6) and radiation module (7), wireless radio frequency port and radiation module (7) are connected respectively at impedance encryption module (6) both ends, body PCBA (3) include chip (4) and radio frequency port (2), body PCBA (3) are through the wireless radio frequency port of radio frequency port (2) connection antenna module (5), body PCBA (3) are still through equivalent impedance network (8) connection produce and survey module (9), body PCBA (3) are still through control line (11) connection produce and survey module (9);
the radio frequency port of the body PCBA (3) is designed by adopting a deviation characteristic impedance 50R;
the input impedance of the radiation module (7) is 50R;
The impedance encryption module (6) adopts discrete radio frequency components and adds a switching tube to realize programmable impedance change or RF tunner with an I 2 C control interface;
the equivalent impedance network (8) is also connected with a programmable control interface (10), and the impedance of the impedance encryption module (6) can be changed through programming;
The impedance encryption module (6) is sealed through fixed sealant.
2. The wireless product design production test method of the anti-copying board is characterized in that the device of claim 1 is adopted, the radio frequency port of the PCBA is connected to the non-50R end of the equivalent network, and the 50R port of the equivalent impedance network is connected to the production test module; the production testing module is connected to the PCBA through a control line and controls the PCBA to send and receive packets in a signaling mode, and the production testing module judges whether the index is qualified.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110761121.8A CN113484721B (en) | 2021-07-06 | 2021-07-06 | Wireless product design production testing device and method for anti-copying plate |
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| CN202110761121.8A CN113484721B (en) | 2021-07-06 | 2021-07-06 | Wireless product design production testing device and method for anti-copying plate |
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| CN113484721A CN113484721A (en) | 2021-10-08 |
| CN113484721B true CN113484721B (en) | 2024-05-03 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1222275A (en) * | 1996-06-17 | 1999-07-07 | 艾利森公司 | Appts. and method for secure communication based on channel characteristics |
| CN202548885U (en) * | 2011-12-19 | 2012-11-21 | 君毅工业股份有限公司 | Long-distance radio frequency identification metal product structure |
| CN103945039A (en) * | 2014-04-28 | 2014-07-23 | 焦海宁 | External information source encryption and anti-eavesdrop interference device for voice communication device |
| CN106303372A (en) * | 2015-05-16 | 2017-01-04 | 叶明芬 | Useful video recognition system |
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| WO2020230791A1 (en) * | 2019-05-15 | 2020-11-19 | 株式会社村田製作所 | Side channel attack prevention device, and encryption processing device |
| WO2021094287A1 (en) * | 2019-11-11 | 2021-05-20 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Devices, method and computer program for hardware-based data encryption with an impedance switch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9851386B2 (en) * | 2012-03-02 | 2017-12-26 | Nokomis, Inc. | Method and apparatus for detection and identification of counterfeit and substandard electronics |
-
2021
- 2021-07-06 CN CN202110761121.8A patent/CN113484721B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1222275A (en) * | 1996-06-17 | 1999-07-07 | 艾利森公司 | Appts. and method for secure communication based on channel characteristics |
| CN202548885U (en) * | 2011-12-19 | 2012-11-21 | 君毅工业股份有限公司 | Long-distance radio frequency identification metal product structure |
| CN103945039A (en) * | 2014-04-28 | 2014-07-23 | 焦海宁 | External information source encryption and anti-eavesdrop interference device for voice communication device |
| CN106303372A (en) * | 2015-05-16 | 2017-01-04 | 叶明芬 | Useful video recognition system |
| CN206505415U (en) * | 2016-12-30 | 2017-09-19 | 北京安天网络安全技术有限公司 | A kind of encryption authentication device based on PCIE |
| WO2020230791A1 (en) * | 2019-05-15 | 2020-11-19 | 株式会社村田製作所 | Side channel attack prevention device, and encryption processing device |
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| CN113484721A (en) | 2021-10-08 |
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