CN112990407A - Tracing system and method suitable for PCB - Google Patents
Tracing system and method suitable for PCB Download PDFInfo
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- CN112990407A CN112990407A CN202110416032.XA CN202110416032A CN112990407A CN 112990407 A CN112990407 A CN 112990407A CN 202110416032 A CN202110416032 A CN 202110416032A CN 112990407 A CN112990407 A CN 112990407A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
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- G—PHYSICS
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- G06Q30/01—Customer relationship services
- G06Q30/014—Providing recall services for goods or products
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q30/00—Commerce
- G06Q30/018—Certifying business or products
- G06Q30/0185—Product, service or business identity fraud
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Abstract
The invention discloses a tracing method and a tracing system suitable for a PCB (printed Circuit Board), which are applied to the technical field of commodity tracing and specifically comprise the following steps: each layer of core board is distributed with a unique identification code, and a reflecting layer is arranged in a fixed area; laminating the multiple layers of core boards, and obtaining a unique tracing code by each layer of core board under the identification of the identification light; the unique tracing code continuously updates tracing information in circulation; and verifying the source and the content of the unique tracing code of the updated tracing information by using the public key of the superior node. The invention provides a tracing system and a tracing method suitable for a PCB, which do not need a user to register and add any encryption/identity authentication equipment, can be flexibly added and conveniently used by any user, have complete and reliable data, can support production and marketing enterprises to participate in the management of tracing data, ensure that the tracing data cannot be falsified and fundamentally put an end to the possibility of dispute generation.
Description
Technical Field
The invention relates to the technical field of commodity tracing, in particular to a tracing system and method suitable for a PCB.
Background
When the quality or safety of the commodity is in question, the commodity can be recalled and disposed in time, which has great significance for maintaining the benefit of the consumer and the social stability.
In the prior art, a tracing system mainly aims at the field of food and medicine, a complete tracing system is not provided for the type of goods such as a PCB (printed Circuit Board), and the problem caused by quality control such as spot check and the like for ex-factory control and transportation cannot be directly determined for a responsible person;
therefore, how to provide a tracing system and method suitable for PCB is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a tracing system and method suitable for a PCB, which do not require a user to register and add any encryption/identity authentication device, any user can be added flexibly and used conveniently, the data is completely reliable, production and marketing enterprises can be supported to participate in the management of tracing data, the tracing data cannot be tampered, and the possibility of disputes is fundamentally avoided.
In order to achieve the above purpose, the invention provides the following technical scheme:
a tracing method suitable for a PCB comprises the following specific steps:
each layer of core board is distributed with a unique identification code, and a reflecting layer is arranged in a fixed area;
laminating the multiple layers of core boards, and obtaining a unique tracing code by each layer of core board under the identification of the identification light;
the unique tracing code continuously updates tracing information in circulation;
and verifying the source and the content of the unique tracing code of the updated tracing information by using the public key of the superior node.
Preferably, in the above tracing method for PCB, the unique identification code assigned to each layer of core board includes information: any one or any combination of factory name, process name, production material number, production batch number, operator name, production line identity, commissioning time, raw material name or supplier or batch number, inspection data, production parameters.
Preferably, in the above tracing method for a PCB, the reflective layer is selected from: according to the copper-clad circuit in each layer of core board.
Preferably, in the tracing method for the PCB, the specific steps of verifying the source and content of the unique tracing code for updating the tracing information include: the production enterprises, dealers and retailers of the PCB operate a digital node, apply for obtaining a pair of public key and private key pairs from a traceability service provider, and the digital node is used for signing and verifying the transaction process of the unique traceability code; the tracing service provider operates a plurality of digital nodes distributed at different places, and the digital nodes are mutually communicated through the Internet to establish a channel for transmitting transaction information of the PCB tracing code.
Preferably, in the above tracing method for a PCB, the method further includes: a consensus mechanism is operated among a plurality of user nodes, and synchronization and voting are carried out periodically to determine that legal transactions are recorded to the user nodes on the block chain.
A traceability system suitable for use with a PCB, comprising:
the service platform is used for recording the detailed process of commodity tracing code circulation as block data;
the user nodes, namely the production enterprises, distributors at all levels and retailers at different categories are connected to the service platform to acquire and store the tracing code data related to the user nodes and perform related business operations;
the unique tracing code is generated by a tracing code generation module; each PCB is endowed with a unique tracing code, and when the PCB is transferred among all dealers, the data of the unique tracing code is also transferred among the user nodes of all dealers; updating the circulation process of the unique tracing code;
verifying the source credibility of the unique tracing code of the public key of the superior node in different user nodes; the contents of the commodity tracing codes related to the transaction are verified, and the input and output of the transaction are ensured to be consistent.
Preferably, in the above tracing system for PCB, the tracing code generating module includes: the device comprises an identification code identification module, an identification code combination module, a tracing code acquisition module and a tracing code updating module;
the identification code identification module is used for identifying that each layer of core board is distributed with a unique identification code, and the unique identification code comprises a reflecting layer;
the identification code combination module is used for combining the unique identification codes on each layer of core board;
the tracing code obtaining module is used for obtaining the unique tracing code of the multilayer core board obtained by combining the identification code combining modules;
and the tracing code updating module is used for continuously adding verification information when the unique tracing code circulates on the user node.
Preferably, in the above tracing method for a PCB, the identification code combining module includes: an emission source and a detector; the emission source emits electromagnetic waves, and the unique traceability code obtained by combining the multilayer identification codes is obtained through the detector according to the attenuation of the electromagnetic waves.
Preferably, in the tracing method for the PCB, a consensus mechanism module is further included, where a consensus mechanism is operated among a plurality of user nodes, and synchronization and voting are performed periodically to determine that a legal transaction is recorded in a user node on the blockchain.
According to the technical scheme, compared with the prior art, the tracing system and the tracing method suitable for the PCB are provided, users do not need to register, any encryption/identity authentication equipment does not need to be added, any user can flexibly join and use conveniently, data are complete and reliable, production and marketing enterprises can be supported to participate in management of tracing data, the tracing data cannot be tampered, and the possibility of disputes is fundamentally avoided. When the PCB leaves a factory, the unique tracing code is obtained through scanning and verified, the outgoing quality of the PCB is guaranteed, all levels of sellers can add a service platform in the circulation process, the previous level of sellers can be traced, and tracing data cannot be tampered.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart of the process of the present invention;
FIG. 2 is a block diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A tracing method suitable for a PCB board, as shown in fig. 1, includes the following steps:
each layer of core board is distributed with a unique identification code, and a reflecting layer is arranged in a fixed area;
laminating the multiple layers of core boards, and obtaining a unique tracing code by each layer of core board under the identification of the identification light;
continuously updating the tracing information by the unique tracing code in circulation;
and verifying the source and the content of the unique tracing code of the updated tracing information by using the public key of the superior node.
Further, the unique identification code distributed on each layer of core board and the reflecting layer in the unique identification codes on the multiple layers of core boards can obtain the unique tracing code under the action of identification light, the unique tracing code is obtained through scanning when the PCB leaves a factory and is verified, the factory leaving quality of the PCB is guaranteed, all levels of sellers can add a service platform in the circulation process, the sellers can trace the previous level, and the tracing data cannot be falsified.
In order to further optimize the above technical solution, the unique identification code assigned to each layer of core board includes information: any one or any combination of factory name, process name, production material number, production batch number, operator name, production line identity, commissioning time, raw material name or supplier or batch number, inspection data, production parameters.
Further, the production information is determined by scanning the unique identification code of each layer of core board.
In order to further optimize the technical scheme, the reflecting layer is selected as follows: according to the copper-clad circuit in each layer of core board.
The reflecting layer can be communicated with the copper-clad circuit, the reflecting layer is clad with copper in the copper-clad process, and when identification light rays are irradiated, the identification light rays with different attenuation degrees can be displayed due to the existence of the copper clad, so that the unique tracing code can be obtained.
In order to further optimize the technical scheme, the specific steps of verifying the source and the content of the unique tracing code for updating the tracing information are as follows: a production enterprise, a distributor and a retailer of the PCB operate a digital node, apply for obtaining a pair of public key and private key pair from a tracing service provider, and the digital node is used for signing and verifying the transaction process of the unique tracing code; the tracing service provider operates a plurality of digital nodes distributed at different places, and the digital nodes are mutually communicated through the Internet to establish a channel for transmitting the transaction information of the PCB tracing code.
Further, a production enterprise determines an initial unique tracing code, wherein the initial unique tracing code comprises quality information of the PCB, the production enterprise and a master distributor circulate when circulating in the first stage, the production enterprise applies to a tracing service provider to obtain a key pair, the master distributor masters a private key in the key pair, and the initial unique tracing code is verified through the private key; during second-level circulation, circulation is carried out between a main distributor and a distributor, wherein the main distributor updates the initial unique traceability code, and quality information of the current PCB mastered by the main distributor is added; and analogizing in sequence, verifying layer by layer, and as long as the next-level user node is verified, the quality information of the current PCB of the previous-level user node does not exist, which indicates that the quality problem occurs in the previous-level user node, thereby determining the problem.
In order to further optimize the above technical solution, the method further comprises: a consensus mechanism is operated among a plurality of user nodes, and synchronization and voting are carried out periodically to determine that legal transactions are recorded to the user nodes on the block chain.
Further, the consensus mechanism can identify whether illegal operations, such as tampering, are performed on the traceable data in the upper and lower user nodes, and the tampering consensus mechanism can identify tampering operations when tampering occurs, so that the quality problem of the upper user node is determined.
A traceability system for a PCB, as shown in fig. 2, comprising:
the service platform is used for recording the detailed process of commodity tracing code circulation as block data;
the user nodes, namely the production enterprises, distributors at all levels and retailers at different categories are connected to the service platform to acquire and store the tracing code data related to the user nodes and perform related business operations;
the unique tracing code is generated by a tracing code generation module; each PCB is endowed with a unique tracing code, and when the PCB is transferred among all dealers, the data of the unique tracing code is also transferred among the user nodes of all dealers; updating the circulation process of the unique tracing code;
verifying the source credibility of the unique tracing code of the public key of the superior node in different user nodes; the contents of the commodity tracing codes related to the transaction are verified, and the input and output of the transaction are ensured to be consistent.
In order to further optimize the above technical solution, the trace back code generating module includes: the device comprises an identification code identification module, an identification code combination module, a tracing code acquisition module and a tracing code updating module;
the identification code identification module is used for identifying that each layer of core board is distributed with a unique identification code, and the unique identification code comprises a reflecting layer;
the identification code combination module is used for combining the unique identification codes on each layer of the core board;
the tracing code acquisition module is used for acquiring the unique tracing code of the multilayer core board obtained by combining the identification code combination modules;
and the tracing code updating module is used for continuously adding verification information when the unique tracing code is circulated on the user node.
In order to further optimize the above technical solution, the identification code combining module includes: an emission source and a detector; the emission source emits electromagnetic waves, and the unique traceability code obtained by combining the multilayer identification codes is obtained through the detector according to the attenuation of the electromagnetic waves.
In order to further optimize the technical scheme, the block chaining system further comprises a consensus mechanism module, wherein a consensus mechanism is operated among a plurality of user nodes and is periodically synchronized and voted to determine that legal transactions are recorded in the user nodes on the block chaining.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A tracing method suitable for a PCB is characterized by comprising the following specific steps:
each layer of core board is distributed with a unique identification code, and a reflecting layer is arranged in a fixed area;
laminating the multiple layers of core boards, and obtaining a unique tracing code by each layer of core board under the identification of the identification light;
the unique tracing code continuously updates tracing information in circulation;
and verifying the source and the content of the unique tracing code of the updated tracing information by using the public key of the superior node.
2. A tracing method suitable for PCB board according to claim 1, wherein the unique identification code assigned to each layer of core board contains information: any one or any combination of factory name, process name, production material number, production batch number, operator name, production line identity, commissioning time, raw material name or supplier or batch number, inspection data, production parameters.
3. A tracing method suitable for PCB board according to claim 1, wherein said reflective layer is selected from: according to the copper-clad circuit in each layer of core board.
4. A tracing method suitable for a PCB board according to claim 1, wherein the specific steps of verifying the source and content of the unique tracing code for updating the tracing information are as follows: the production enterprises, dealers and retailers of the PCB operate a digital node, apply for obtaining a pair of public key and private key pairs from a traceability service provider, and the digital node is used for signing and verifying the transaction process of the unique traceability code; the tracing service provider operates a plurality of digital nodes distributed at different places, and the digital nodes are mutually communicated through the Internet to establish a channel for transmitting transaction information of the PCB tracing code.
5. A tracing method for PCB board according to claim 1, further comprising: a consensus mechanism is operated among a plurality of user nodes, and synchronization and voting are carried out periodically to determine that legal transactions are recorded to the user nodes on the block chain.
6. A traceability system for a PCB, comprising:
the service platform is used for recording the detailed process of commodity tracing code circulation as block data;
the user nodes, namely the production enterprises, distributors at all levels and retailers at different categories are connected to the service platform to acquire and store the tracing code data related to the user nodes and perform related business operations;
the unique tracing code is generated by a tracing code generation module; each PCB is endowed with a unique tracing code, and when the PCB is transferred among all dealers, the data of the unique tracing code is also transferred among the user nodes of all dealers; updating the circulation process of the unique tracing code;
verifying the source credibility of the unique tracing code of the public key of the superior node in different user nodes; the contents of the commodity tracing codes related to the transaction are verified, and the input and output of the transaction are ensured to be consistent.
7. A tracing system suitable for PCB board as claimed in claim 6, wherein said tracing code generating module comprises: the device comprises an identification code identification module, an identification code combination module, a tracing code acquisition module and a tracing code updating module;
the identification code identification module is used for identifying that each layer of core board is distributed with a unique identification code, and the unique identification code comprises a reflecting layer;
the identification code combination module is used for combining the unique identification codes on each layer of core board;
the tracing code obtaining module is used for obtaining the unique tracing code of the multilayer core board obtained by combining the identification code combining modules;
and the tracing code updating module is used for continuously adding verification information when the unique tracing code circulates on the user node.
8. A traceability system, as claimed in claim 7, wherein said identification code combining module comprises: an emission source and a detector; the emission source emits electromagnetic waves, and the unique traceability code obtained by combining the multilayer identification codes is obtained through the detector according to the attenuation of the electromagnetic waves.
9. A traceability system suitable for use on a PCB as claimed in claim 6, further comprising a consensus mechanism module, wherein a consensus mechanism is run between a plurality of user nodes, and wherein the consensus mechanism is synchronized and voted periodically to determine if a valid transaction is recorded to a user node on the blockchain.
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| CN202110416032.XA CN112990407A (en) | 2021-04-16 | 2021-04-16 | Tracing system and method suitable for PCB |
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| CN111587066A (en) * | 2020-05-27 | 2020-08-25 | 南京泰治自动化技术有限公司 | Method for tracing information of each layer of core board after PCB manufacturing and laminating |
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2021
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| CN101007471A (en) * | 2006-01-27 | 2007-08-01 | 昶驎科技股份有限公司 | Automatic spray printing and synchronous detection and tracking device and its method |
| CN102271464A (en) * | 2010-06-07 | 2011-12-07 | 宏恒胜电子科技（淮安）有限公司 | Method for tracing quality of circuit board |
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