CN111027826B - Block chain-based fabricated building construction quality tracing method, system and device - Google Patents

Block chain-based fabricated building construction quality tracing method, system and device Download PDF

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CN111027826B
CN111027826B CN201911178358.2A CN201911178358A CN111027826B CN 111027826 B CN111027826 B CN 111027826B CN 201911178358 A CN201911178358 A CN 201911178358A CN 111027826 B CN111027826 B CN 111027826B
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information
building
bill
alliance chain
authentication server
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CN111027826A (en
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刘景矿
闫乐美
王东
王学通
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Guangzhou University
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Guangzhou University
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
    • G06Q10/063—Operations research, analysis or management
    • G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
    • G06Q10/06395—Quality analysis or management
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/08—Construction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3236—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using cryptographic hash functions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3297—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving time stamps, e.g. generation of time stamps
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/50—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using hash chains, e.g. blockchains or hash trees
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/30—Computing systems specially adapted for manufacturing

Abstract

The invention discloses an assembly type building construction quality tracing method, system and device based on a block chain. The method comprises the steps of obtaining component supply information of an assembled building and design information of the assembled building, and generating a first bill; generating a second bill according to node information of each preset quality tracking node in the assembly type building construction process; acquiring acceptance record information of a proctor in the building construction process, and generating a third bill; establishing an assembly type building construction project alliance chain for interconnection and intercommunication of traceable information, and carrying out distributed accounting on the bill; and according to the distributed accounting result, monitoring and tracking the construction quality problem of the fabricated building through the unified traceability interface. By using the method of the invention, the quality responsibility problems in the front, middle and later stages of the fabricated building construction can be effectively recorded and traced, a good trust mechanism is established, and the responsibility tracing efficiency is improved. The invention can be widely applied to the technical field of construction.

Description

Block chain-based fabricated building construction quality tracing method, system and device
Technical Field
The invention relates to the technical field of buildings, in particular to an assembled building construction quality tracing method, system and device based on block chains.
Background
The assembly type construction technology is an emerging construction mode, a large amount of field operation work in the traditional construction mode is transferred to a factory, building components and accessories (such as floors, wallboards, stairs, balconies and the like) are manufactured in the factory, the building components and accessories are transported to a construction site, and the building is assembled and installed on site through a reliable connection mode. The technology not only can solve the quality problems of wall cracks, leakage and the like, but also can improve the integrity, safety, fire resistance and durability of the building; the prefabricated components are subjected to industrial production and field assembly type construction, so that the construction period is shortened, the cost is saved, the quality of a building is improved, the construction period is shortened, the energy is saved, and the cost is reduced. In the last decade, development has been rapid.
However, since the prefabricated members are of a large variety, the purchase and transportation process is complicated, and the participation Fang Jiaoduo of the entire assembly type construction project often makes it unclear whether the main body such as production, transportation, design, construction, supervision (agency of the constructor) is responsible when the quality of the construction is problematic. The responsibility of the construction item at the middle and later stages at present belongs to the contract division between partial responsibility main bodies, and a good trust mechanism is lacked. And due to the large time span of engineering, the occurrence of certain uncertain factors and the like can lead to the asymmetry of quality information and the mutual withholding of responsibilities. These problems in the prior art are to be solved.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art to a certain extent. Therefore, the embodiment of the invention provides the block chain-based method, system and device for tracing the construction quality of the assembled building, which can effectively record and trace the quality responsibility problems before, during and after the construction of the assembled building.
The technical scheme adopted by the embodiment of the invention is as follows:
in a first aspect, an embodiment of the present invention provides a block chain-based fabricated building construction quality tracing method, including the following steps:
acquiring component supply information of an assembled building and design information of the assembled building, and generating a first bill;
generating a second bill according to node information of each preset quality tracking node in the assembly type building construction process;
acquiring acceptance record information of a proctor in the building construction process, and generating a third bill;
establishing an assembly type building construction project alliance chain for interconnection and intercommunication of traceability information;
performing distributed billing on the first bill, the second bill and the third bill;
and according to the distributed accounting result, monitoring and tracking the construction quality problem of the fabricated building through the unified traceability interface.
Further, the component part supply information of the fabricated building specifically includes factory supply information and transportation supply information of the component part.
Further, the step of generating the second bill according to the node information of each preset quality tracking node in the assembly building construction process specifically includes:
building model information of each preset time and preset key position is collected through a BIM model;
acquiring inspection record information of an assembled building construction site;
and generating a second bill based on the building model information and the patrol record information.
Further, the method further comprises an internet of things initializing step, and the internet of things initializing step specifically comprises the following steps:
acquiring a constructional element of the assembled building, and uniformly coding the constructional element;
installing a perception layer tag facility carrying independent identity information in the component and fitting, and importing the identity information into an information database of a BIM model;
and acquiring the position information of the perception layer tag facility through the identification device, and importing the position information into an information database of the BIM model.
Further, the step of performing distributed billing on the first bill, the second bill and the third bill specifically includes:
carrying out identity authentication on each participant in the assembled building construction project, and generating a key pair comprising a private key and a public key for each participant after the authentication is passed, wherein the participants are accounting nodes; the participants comprise a production party, a transportation party, a design party, a construction party and a supervision party;
when delivering the component parts to the transport party in the production direction, generating a digital signature according to the factory supply information of the component parts and the private key of the production party; then the digital signature is sent to an authentication server together with the public key of the producer; the authentication server verifies whether the factory supply information of the component parts is legal or not by utilizing the public key, if so, the authentication server generates a digital fingerprint from the factory supply information of the component parts and writes the digital fingerprint into the block alliance chain together with the corresponding timestamp; finally broadcasting the time stamp to other participants in the alliance chain;
after the transporter acquires information broadcast by the producer through the alliance chain, calculating a hash value of the factory supply information, comparing the hash value with a digital fingerprint of the factory supply information acquired through the alliance chain, and extracting the factory supply information if the comparison is successful; generating a digital signature according to the transportation supply information and the private key of the transportation party, and transmitting the digital signature and the public key of the transportation party to an authentication server; after receiving the transportation supply information, the authentication server verifies whether the transportation supply information is legal, if so, the authentication server generates a digital fingerprint from the transportation supply information and writes the digital fingerprint into the block alliance chain together with a corresponding timestamp; finally broadcasting the time stamp to other participants in the alliance chain;
when the design direction constructor delivers the design scheme of the fabricated building, a digital signature is generated according to the design information of the fabricated building and the private key of the constructor; then the digital signature is sent to an authentication server together with the public key of the designer; after receiving the design information, the authentication server verifies whether the design information is legal, if so, the authentication server writes the design information into the block alliance chain together with the corresponding time stamp; finally broadcasting the time stamp to other participants in the alliance chain;
after obtaining the broadcasted information through the alliance chain, the constructor calculates the hash value of the information and compares the hash value with the digital fingerprint of the information obtained through the alliance chain, and if the comparison is successful, the information is extracted; generating a digital signature according to the building model information, the inspection record information and the private key of the constructor; then the digital signature and the public key of the constructor are sent to an authentication server; after receiving the building model information and the patrol record information of the constructor, the authentication server verifies whether the building model information and the patrol record information are legal or not, if the building model information and the patrol record information are legal, the authentication server writes the building model information and the patrol record information into a block alliance chain together with corresponding time stamps; finally broadcasting the time stamp to other participants in the alliance chain;
after the proctor acquires the information broadcast by the constructor through the alliance chain, the proctor calculates the hash value of the information broadcast by the constructor, compares the hash value with the digital fingerprint of the information acquired through the alliance chain, and extracts the information if the comparison is successful; generating a digital signature according to the acceptance record information and the private key of the proctoring party, and then transmitting the digital signature and the public key of the proctoring party to an authentication server; after receiving the acceptance record information of the proctor, the authentication server verifies whether the acceptance record information is legal, if so, the authentication server writes the acceptance record information into the block alliance chain together with the corresponding time stamp, and finally broadcasts the digital signature and the corresponding time stamp to other participants in the block alliance chain.
Further, the method comprises the following steps: and dividing responsibility of each responsibility main body in the construction process of the fabricated building according to the distributed accounting result, and generating an intelligent contract.
In a second aspect, an embodiment of the present invention provides a block chain-based fabricated building construction quality traceability system, including:
the acquisition module is used for acquiring various event information in the tracing process of the construction quality of the fabricated building;
the storage module is used for billing information in the tracing process of the construction quality of the fabricated building based on the blockchain technology;
the tracing module is used for monitoring and tracking the construction quality problem of the fabricated building through the unified tracing interface;
and the generation module is used for dividing responsibility of each responsibility main body in the assembly type building construction process according to the distributed accounting result to generate an intelligent contract.
In a third aspect, an embodiment of the present invention provides a block chain-based fabricated building construction quality tracing apparatus, including:
at least one processor;
at least one memory for storing at least one program;
the at least one program, when executed by the at least one processor, causes the at least one processor to implement the blockchain-based fabricated building construction quality traceability method.
The advantages and benefits of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
The embodiment of the invention can effectively record and trace the quality responsibility problems before, during and after the construction of the fabricated building, and account related information and responsibility events through a blockchain technology, thereby realizing the decentralization and non-falsification of event tracing information storage of key nodes and participants, ensuring the efficient and transparent problem tracing of the construction quality of the related fabricated building, and establishing a good trust mechanism.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description is made with reference to the accompanying drawings of the embodiments of the present invention or the related technical solutions in the prior art, and it should be understood that the drawings in the following description are only for convenience and clarity of describing some embodiments in the technical solutions of the present invention, and other drawings may be obtained according to these drawings without the need of inventive labor for those skilled in the art.
FIG. 1 is a schematic flow chart of an embodiment of a block chain based fabricated building construction quality traceability method of the present invention;
FIG. 2 is a schematic diagram of participants in an embodiment of a block chain-based fabricated building construction quality traceability method according to the present invention;
FIG. 3 is a schematic block diagram of an embodiment of a block chain based fabricated building construction quality traceability system according to the present invention;
fig. 4 is a schematic block diagram of an embodiment of an assembled building construction quality tracing device based on a blockchain.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention. The step numbers in the following embodiments are set for convenience of illustration only, and the order between the steps is not limited in any way, and the execution order of the steps in the embodiments may be adaptively adjusted according to the understanding of those skilled in the art.
The embodiment of the invention provides a block chain-based fabricated building construction quality tracing method, which is used for effectively recording and tracing quality responsibility problems before, during and after fabricated building construction, and related information and responsibility events are counted through a block chain technology, so that event tracing information of key nodes and participants is stored for decentralization and is not tamperable, and a good trust mechanism is established.
Referring to fig. 1, in an embodiment of the present invention, there is provided an assembled building construction quality tracing method based on a blockchain, including the steps of:
s1: acquiring component supply information of an assembled building and design information of the assembled building, and generating a first bill;
s2: generating a second bill according to node information of each preset quality tracking node in the assembly type building construction process;
s3: acquiring acceptance record information of a proctor in the building construction process, and generating a third bill;
s4: establishing an assembly type building construction project alliance chain for interconnection and intercommunication of traceability information;
s5: performing distributed billing on the first bill, the second bill and the third bill;
s6: and according to the distributed accounting result, monitoring and tracking the construction quality problem of the fabricated building through the unified traceability interface.
Further as a preferred embodiment, the component part supply information of the fabricated building specifically includes factory supply information and transportation supply information of the component part.
A lot of preparation work is required before the fabricated building actually starts to be constructed. In the embodiment of the invention, the traceability target of the stage is mainly divided into two types, wherein the first type is related responsibility main bodies related to the supply process of various constructional elements of the fabricated building, and the second type is related responsibility main bodies related to engineering design work of the fabricated building project.
First, the construction project of the fabricated building is not separated from the prefabricated building components, and the quality of the building components has a very close relationship with the construction quality of the fabricated building. The components and parts arrive at the construction site from the production, the main responsibility involved is the producer and the transporter, for the producer, the production quality of the components and parts is guaranteed, and for the components and parts which do not meet the requirements, self-checking and re-checking should be given, so that the components and parts with unqualified quality are prevented from flowing into the market. When delivering the component products to the conveyor in the production direction, the conveyor (or other responsible main body) should check and confirm the quantity and quality of the delivered components, and store the final authentication result as the supply information record of the producer, if the components are detected to have production flaws, the producer should re-provide qualified products and be responsible for deferring the construction project. Similarly, since components may be destroyed during transportation due to collision or the like due to improper stacking of components, improper handling or no due transportation protection, it is necessary to check and confirm the number and quality of components transported to a construction site when the components are received by a construction side of an engineering, specific detection items and standards are the same as those described above, and the result of the check is also stored as a supply information record of the transportation side. Through the implementation mode, the total supply information of the assembly parts in the delivery and transportation process can be summarized and recorded in the preparation work before the assembly type building construction. The method is very favorable for defining the responsibility main body when the supply quality of the constructional elements is wrong, and is convenient for carrying out responsibility tracing on the quality problems caused by the constructional elements in the tracing of the construction quality of the assembled building. Meanwhile, factory supply information and transportation supply information of the constructional elements are effectively collected and stored and uploaded to an assembled building construction project alliance chain for information interconnection and intercommunication for distributed accounting, so that the information can be effectively prevented from being tampered, and the responsibility tracing safety and the information symmetry are enhanced. It should be noted that the division of responsibility described in the embodiments of the present invention is only an alternative implementation, which merely represents that quality traceability can be performed according to the above-described method, and the actual division of responsibility is performed according to a specific multiparty protocol or related specification. Also, the fabricated design information provided by the constructor of the design direction, such as drawing files, quality planning, data measurement and calculation support, etc., should be effectively accounted for as information for tracing responsibility of the constructor.
Further as a preferred embodiment, the step S2 of generating the second bill according to the node information of each preset quality tracking node in the fabricated building construction process specifically includes:
s21: building model information of each preset time and preset key position is collected through a BIM model;
s22: acquiring inspection record information of an assembled building construction site;
s23: and generating a second bill based on the building model information and the patrol record information.
Further as a preferred embodiment, the method further includes an internet of things initializing step S7, where the internet of things initializing step S7 specifically includes:
s71: acquiring a constructional element of the assembled building, and uniformly coding the constructional element;
s72: installing a perception layer tag facility carrying independent identity information in the component and fitting, and importing the identity information into an information database of a BIM model;
s73: and acquiring the position information of the perception layer tag facility through the identification device, and importing the position information into an information database of the BIM model.
In the embodiment of the invention, the building quality in the construction process is tracked from two aspects, on the one hand, based on a Building Information Model (BIM) technology and an Internet of things technology, the relevant information data and the position information of components in the assembly type building construction process are taken as the basis of a model, the building model is built, and then the exact information contained in the building is simulated by using digital information. Through BIM technology, each single component information as basic building element can be synthesized into a database, and the data in the database always keeps consistency and is globally shared. By uniformly coding the constructional elements and installing the perception layer tag facility carrying independent identity information, a constructional element information database corresponding to the building project can be effectively established. The sensing layer tag facility can be implemented in any mode including two-dimensional code tags, RFID tags, cameras, GPS, sensors, M2M terminals, sensor gateways and the like. The position information of the sensing layer label facility is acquired through the identification device corresponding to the sensing layer label facility, and is imported into the information database of the BIM model, so that the geometric figure information sets of the constructional elements can be combined together to form a databased building primitive containing extremely rich building project information. And BIM model information is interrelated and dynamically changed, so long as the model information is changed, all the associated objects can be quickly updated, and corresponding graphics, documents and the like can be automatically generated.
Building models of all preset time nodes, such as certain preset deadlines of engineering, are acquired through a BIM model; or some key positions, such as important parts of the building and detailed model information of interfaces, can be used as an index for quality monitoring in the assembly type building construction process. On the other hand, the construction quality of the assembled building is closely related to the on-site operation condition, the operation of a constructor on the machine does not reach the standard, the key parts of the assembled building are lack of necessary attention, and the quality problem can be caused by unskilled technology, so that the inspection record information of the construction site is used as an index of quality monitoring in the construction process of the assembled building. The patrol personnel of the patrol record information can be assigned by the relevant responsible body.
Referring to fig. 2, further as a preferred embodiment, the step S5 of performing distributed billing on the first bill, the second bill and the third bill specifically includes:
s51: carrying out identity authentication on each participant in the assembled building construction project, and generating a key pair comprising a private key and a public key for each participant after the authentication is passed, wherein the participants are accounting nodes; the participants comprise a production party, a transportation party, a design party, a construction party and a supervision party;
s52: when delivering the component parts to the transport party in the production direction, generating a digital signature according to the factory supply information of the component parts and the private key of the production party; then the digital signature is sent to an authentication server together with the public key of the producer; the authentication server verifies whether the factory supply information of the component parts is legal or not by utilizing the public key, if so, the authentication server generates a digital fingerprint from the factory supply information of the component parts and writes the digital fingerprint into the block alliance chain together with the corresponding timestamp; finally broadcasting the time stamp to other participants in the alliance chain;
s53: after the transporter acquires information broadcast by the producer through the alliance chain, calculating a hash value of the factory supply information, comparing the hash value with a digital fingerprint of the factory supply information acquired through the alliance chain, and extracting the factory supply information if the comparison is successful; generating a digital signature according to the transportation supply information and the private key of the transportation party, and transmitting the digital signature and the public key of the transportation party to an authentication server; after receiving the transportation supply information, the authentication server verifies whether the transportation supply information is legal, if so, the authentication server generates a digital fingerprint from the transportation supply information and writes the digital fingerprint into the block alliance chain together with a corresponding timestamp; finally broadcasting the time stamp to other participants in the alliance chain;
s54: when the design direction constructor delivers the design scheme of the fabricated building, a digital signature is generated according to the design information of the fabricated building and the private key of the constructor; then the digital signature is sent to an authentication server together with the public key of the designer; after receiving the design information, the authentication server verifies whether the design information is legal, if so, the authentication server writes the design information into the block alliance chain together with the corresponding time stamp; finally broadcasting the time stamp to other participants in the alliance chain;
s55: after obtaining the broadcasted information through the alliance chain, the constructor calculates the hash value of the information and compares the hash value with the digital fingerprint of the information obtained through the alliance chain, and if the comparison is successful, the information is extracted; generating a digital signature according to the building model information, the inspection record information and the private key of the constructor; then the digital signature and the public key of the constructor are sent to an authentication server; after receiving the building model information and the patrol record information of the constructor, the authentication server verifies whether the building model information and the patrol record information are legal or not, if the building model information and the patrol record information are legal, the authentication server writes the building model information and the patrol record information into a block alliance chain together with corresponding time stamps; finally broadcasting the time stamp to other participants in the alliance chain;
s56: after the proctor acquires the information broadcast by the constructor through the alliance chain, the proctor calculates the hash value of the information broadcast by the constructor, compares the hash value with the digital fingerprint of the information acquired through the alliance chain, and extracts the information if the comparison is successful; generating a digital signature according to the acceptance record information and the private key of the proctoring party, and then transmitting the digital signature and the public key of the proctoring party to an authentication server; after receiving the acceptance record information of the proctor, the authentication server verifies whether the acceptance record information is legal, if so, the authentication server writes the acceptance record information into the block alliance chain together with the corresponding time stamp, and finally broadcasts the digital signature and the corresponding time stamp to other participants in the block alliance chain.
Further as a preferred embodiment, the method further comprises the steps of: and dividing responsibility of each responsibility main body in the construction process of the fabricated building according to the distributed accounting result, and generating an intelligent contract.
The embodiment of the invention further combines the characteristics of intelligent contracts in the blockchain technology, divides the responsibilities of each main body in advance according to the distributed accounting result, and can automatically execute the related clauses according to the intelligent contracts when the related quality events occur, thereby saving the tracing time and avoiding the condition that the quality problems are difficult to solve due to mutual pushing of each responsibilities.
Referring to fig. 3, an embodiment of the present invention provides an assembled building construction quality tracing system based on a blockchain, including:
the acquisition module 101 is used for acquiring various event information in the tracing process of the construction quality of the fabricated building;
the storage module 102 is used for billing information in the tracing process of the construction quality of the fabricated building based on the blockchain technology;
the tracing module 103 is used for monitoring and tracking the construction quality problem of the fabricated building through the unified tracing interface;
and the generating module 104 is used for dividing responsibility of each responsibility main body in the assembly type building construction process according to the distributed accounting result to generate an intelligent contract.
Referring to fig. 4, an embodiment of the present invention provides an assembled building construction quality tracing device based on a blockchain, including:
at least one processor 201;
at least one memory 202 for storing at least one program;
the at least one program, when executed by the at least one processor 201, causes the at least one processor 201 to implement the blockchain-based fabricated building construction quality traceability method.
It can be seen that the content in the above method embodiment is applicable to the embodiment of the present device, and the functions specifically implemented by the embodiment of the present device are the same as those of the embodiment of the above method, and the beneficial effects achieved by the embodiment of the above method are the same as those achieved by the embodiment of the above method.
The embodiment of the invention also provides a storage medium, in which instructions executable by the processor 201 are stored, the instructions executable by the processor 201 are used for executing the block chain based fabricated building construction quality tracing method when being executed by the processor 201.
Similarly, the content in the above method embodiment is applicable to the present storage medium embodiment, and the specific functions of the present storage medium embodiment are the same as those of the above method embodiment, and the achieved beneficial effects are the same as those of the above method embodiment.
In some alternative embodiments, the functions/acts noted in the block diagrams may occur out of the order noted in the operational illustrations. For example, two blocks shown in succession may in fact be executed substantially concurrently or the blocks may sometimes be executed in the reverse order, depending upon the functionality/acts involved. Furthermore, the embodiments presented and described in the flowcharts of the present invention are provided by way of example in order to provide a more thorough understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed, and in which sub-operations described as part of a larger operation are performed independently.
Furthermore, while the invention is described in the context of functional modules, it should be appreciated that, unless otherwise indicated, one or more of the described functions and/or features may be integrated in a single physical device and/or software module or one or more functions and/or features may be implemented in separate physical devices or software modules. It will also be appreciated that a detailed discussion of the actual implementation of each module is not necessary to an understanding of the present invention. Rather, the actual implementation of the various functional modules in the apparatus disclosed herein will be apparent to those skilled in the art from consideration of their attributes, functions and internal relationships. Accordingly, one of ordinary skill in the art can implement the invention as set forth in the claims without undue experimentation. It is also to be understood that the specific concepts disclosed are merely illustrative and are not intended to be limiting upon the scope of the invention, which is to be defined in the appended claims and their full scope of equivalents.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
In the description of the present specification, reference to the term "one embodiment," "another embodiment," or "certain embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the embodiments described above, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the present invention, and these equivalent modifications and substitutions are intended to be included in the scope of the present invention as defined in the appended claims.

Claims (5)

1. The block chain-based fabricated building construction quality tracing method is characterized by comprising the following steps of:
acquiring component supply information of an assembled building and design information of the assembled building, and generating a first bill;
generating a second bill according to node information of each preset quality tracking node in the assembly type building construction process;
acquiring acceptance record information of a proctor in the building construction process, and generating a third bill;
establishing an assembly type building construction project alliance chain for interconnection and intercommunication of traceability information;
performing distributed billing on the first bill, the second bill and the third bill;
according to the distributed accounting result, monitoring and tracking the construction quality problem of the fabricated building through the unified traceability interface;
the step of generating a second bill according to node information of each preset quality tracking node in the assembly type building construction process specifically comprises the following steps:
building model information of each preset time and preset key position is collected through a BIM model;
acquiring inspection record information of an assembled building construction site;
generating a second bill based on the building model information and the patrol record information;
the step of performing distributed billing on the first bill, the second bill and the third bill specifically comprises the following steps:
carrying out identity authentication on each participant in the assembled building construction project, and generating a key pair comprising a private key and a public key for each participant after the authentication is passed, wherein the participants are accounting nodes; the participants comprise a production party, a transportation party, a design party, a construction party and a supervision party;
when delivering the component parts to the transport party in the production direction, generating a digital signature according to the factory supply information of the component parts and the private key of the production party; then the digital signature is sent to an authentication server together with the public key of the producer; the authentication server verifies whether the factory supply information of the component parts is legal or not by utilizing the public key, if so, the authentication server generates a digital fingerprint from the factory supply information of the component parts and writes the digital fingerprint into the block alliance chain together with the corresponding timestamp; finally broadcasting the time stamp to other participants in the alliance chain;
after the transporter acquires information broadcast by the producer through the alliance chain, calculating a hash value of the factory supply information, comparing the hash value with a digital fingerprint of the factory supply information acquired through the alliance chain, and extracting the factory supply information if the comparison is successful; generating a digital signature according to the transportation supply information and the private key of the transportation party, and transmitting the digital signature and the public key of the transportation party to an authentication server; after receiving the transportation supply information, the authentication server verifies whether the transportation supply information is legal, if so, the authentication server generates a digital fingerprint from the transportation supply information and writes the digital fingerprint into the block alliance chain together with a corresponding timestamp; finally broadcasting the time stamp to other participants in the alliance chain;
when the design direction constructor delivers the design scheme of the fabricated building, a digital signature is generated according to the design information of the fabricated building and the private key of the constructor; then the digital signature is sent to an authentication server together with the public key of the designer; after receiving the design information, the authentication server verifies whether the design information is legal, if so, the authentication server writes the design information into the block alliance chain together with the corresponding time stamp; finally broadcasting the time stamp to other participants in the alliance chain;
after obtaining the broadcasted information through the alliance chain, the constructor calculates the hash value of the information and compares the hash value with the digital fingerprint of the information obtained through the alliance chain, and if the comparison is successful, the information is extracted; generating a digital signature according to the building model information, the inspection record information and the private key of the constructor; then the digital signature and the public key of the constructor are sent to an authentication server; after receiving the building model information and the patrol record information of the constructor, the authentication server verifies whether the building model information and the patrol record information are legal or not, if the building model information and the patrol record information are legal, the authentication server writes the building model information and the patrol record information into a block alliance chain together with corresponding time stamps; finally broadcasting the time stamp to other participants in the alliance chain;
after the proctor acquires the information broadcast by the constructor through the alliance chain, the proctor calculates the hash value of the information broadcast by the constructor, compares the hash value with the digital fingerprint of the information acquired through the alliance chain, and extracts the information if the comparison is successful; generating a digital signature according to the acceptance record information and the private key of the proctoring party, and then transmitting the digital signature and the public key of the proctoring party to an authentication server; after receiving the acceptance record information of the proctor, the authentication server verifies whether the acceptance record information is legal, if so, the authentication server writes the acceptance record information into the block alliance chain together with the corresponding time stamp, and finally broadcasts the digital signature and the corresponding time stamp to other participants in the block alliance chain.
2. The blockchain-based fabricated building construction quality traceability method of claim 1, wherein the method comprises the steps of: the building component supply information of the fabricated building specifically comprises factory supply information and transportation supply information of the building component.
3. The block chain based fabricated building construction quality tracing method of claim 1, further comprising an internet of things initialization step, wherein the internet of things initialization step specifically comprises:
acquiring a constructional element of the assembled building, and uniformly coding the constructional element;
installing a perception layer tag facility carrying independent identity information in the component and fitting, and importing the identity information into an information database of a BIM model;
and acquiring the position information of the perception layer tag facility through the identification device, and importing the position information into an information database of the BIM model.
4. The blockchain-based fabricated building construction quality traceability method of claim 1, further comprising the steps of: and dividing responsibility of each responsibility main body in the construction process of the fabricated building according to the distributed accounting result, and generating an intelligent contract.
5. Assembly type building construction quality traceback device based on block chain, its characterized in that includes:
at least one processor;
at least one memory for storing at least one program;
the at least one program, when executed by the at least one processor, causes the at least one processor to implement the blockchain-based fabricated building construction quality traceability method of any of claims 1-4.
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