CN115865720B - Construction acceptance management method and system based on block chain cross-chain network - Google Patents
Construction acceptance management method and system based on block chain cross-chain network Download PDFInfo
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Abstract
The invention discloses a construction acceptance management system and method based on a block chain cross-chain network, wherein the management method comprises the following steps: storing the positioning information and quality acceptance information of acceptance personnel in a construction site into an out-of-chain server; the positioning authentication chain and the quality authentication chain respectively acquire positioning information and quality acceptance information and carry out Hash operation to obtain a positioning Hash value and a quality Hash value, and the management chain encrypts the quality Hash value by taking the positioning Hash value as a secret key to obtain a quality ciphertext; the positioning authentication chain judges whether the positioning information is in compliance or not through an intelligent contract for checking and accepting the responsibility specification of personnel; when the quality ciphertext is in compliance, the management chain backtracks the corresponding positioning hash value to decrypt the quality ciphertext; the quality certification chain determines corresponding quality acceptance information based on the decrypted quality hash value, and judges whether the quality acceptance information is in compliance or not through an engineering quality acceptance standard intelligent contract; when compliant, the examination passes. By building a block chain cross-chain network and introducing an encryption and decryption algorithm, the reliability of project quality acceptance is improved.
Description
Technical Field
The invention belongs to the technical field of quality management of constructional engineering, and particularly relates to a construction acceptance management method and a construction acceptance management system based on a block chain cross-chain network.
Background
The method is important for guaranteeing the life and property safety of people by standardizing the responsibility of acceptance personnel and strengthening the supervision of the construction quality of the project. At present, the construction quality acceptance work is usually realized by filling in forms of acceptance forms, signatures and the like, the quality acceptance information is very easy to be falsified, and real traceability and accountability are difficult once engineering accidents occur. The block chain technology is characterized in that a credible technical system is constructed in a decentralized and trust-removing mode, personnel information and key process information related to construction acceptance work are linked, the reality and transparency of acceptance personnel management and work quality management can be guaranteed, and trust among all participants can be built.
However, the existing engineering projects are often provided with more participants, the data volume of the engineering quality acceptance information is large, and a single blockchain is difficult to meet the requirements. Meanwhile, when the engineering quality is accepted, the only compliance examination of the quality information is unreliable, and the situation that the acceptance personnel does not actually arrive at the site for acceptance or the acceptance time is too short exists. Therefore, a construction acceptance management method which is more reliable and can meet multi-party cooperative management and control needs to be provided.
Disclosure of Invention
Aiming at the defects or the improvement requirements in the prior art, the invention provides a construction acceptance management method based on a block chain cross-chain network and a management system thereof, aiming at performing compliance examination of various types based on the block chain cross-chain network and improving the reliability of acceptance examination in a multi-party cooperative mode.
To achieve the above object, according to one aspect of the present invention, there is provided a construction acceptance management method based on a blockchain inter-chain network, the blockchain inter-chain network including a positioning certification chain, a quality certification chain and a management chain, the positioning certification chain including an acceptance staff responsibility specification intelligent contract, the quality certification chain including an engineering quality acceptance standard intelligent contract, the construction acceptance management method including compliance review,
the compliance review includes:
respectively storing the positioning information of the acceptance personnel on the construction site and the collected quality acceptance information into an out-of-chain server;
the positioning authentication chain acquires positioning information, performs Hash operation to obtain a positioning Hash value, and then shares the positioning Hash value to the management chain, the quality authentication chain acquires quality acceptance information matched with the positioning information, performs Hash operation to obtain a quality Hash value, and then shares the quality Hash value to the management chain, and the management chain encrypts the matched quality Hash value by taking the positioning Hash value as a secret key to obtain a quality ciphertext;
the positioning authentication chain judges whether the positioning information is in compliance or not through the acceptance staff responsibility specification intelligent contract and shares the judgment result to the management chain;
when the positioning information is judged to be in compliance, the positioning hash value corresponding to the backtracking of the management chain is used as a key to decrypt the quality ciphertext to obtain a matched quality hash value and the matched quality hash value is shared to the quality authentication chain;
the quality authentication chain determines corresponding quality acceptance information based on the decrypted quality hash value, judges whether the quality acceptance information is in compliance or not through the engineering quality acceptance standard intelligent contract, and shares the judgment result to the management chain;
and when the quality acceptance information is judged to be in compliance, the management chain determines that the compliance of the current participant passes.
In one embodiment, when the positioning information is determined not to be in compliance or when the quality acceptance information is determined not to be in compliance, the management chain corresponding to the management node prompts rework and re-acceptance.
In one embodiment, the construction acceptance management method comprises compliance examination of self-inspection of a construction party and compliance examination of inspection of a supervisor party, when the compliance examination of the self-inspection of the construction party passes, the compliance examination of the inspection of the supervisor party is continuously executed, and when the compliance examination of the inspection of the supervisor party passes, a quality acceptance qualified report is sent to the construction party.
In one embodiment, before quality acceptance work is carried out, a UWB acceptance person positioning system is established, the UWB acceptance person positioning system comprises a UWB positioning base station, a UWB positioning tag, a UWB communication base station and a personnel positioning engine which are deployed on a construction site, and the personnel positioning engine is integrated with position information, quality acceptance standards and quality acceptance tables of all acceptance sites;
the quality acceptance information of the personnel of will accepting in the job site's locating information and collection is accepted and is deposited in the outer server of chain respectively, includes:
an acceptance person carries a mobile terminal provided with a UWB positioning tag to go to an acceptance place, and when a UWB positioning base station on a construction site detects the UWB positioning tag, a timestamp data frame is transmitted to a person positioning engine through a UWB communication base station;
the personnel positioning engine calculates the positioning information of the checking and accepting personnel and stores the positioning information into the out-of-link server, and automatically sends the quality checking and accepting standard and the quality checking and accepting form of the checking and accepting place where the checking and accepting personnel are located to the mobile terminal according to the positioning information;
and (4) the quality acceptance form on the mobile terminal is filled and submitted by an acceptance staff, and the quality acceptance information in the quality acceptance form is collected and stored in the out-of-chain server.
In one embodiment, the out-of-chain server comprises a positioning system server and each participant server, wherein the positioning information is stored in the positioning system server, and the quality acceptance information is stored in the participant server actually performing acceptance work.
In one embodiment, the management chain is respectively communicated with the positioning authentication chain and the quality authentication chain through a cross-chain cooperative service, the cross-chain cooperative service comprises a cross-chain agent service and a sub-chain agent service, one cross-chain agent service is uniquely matched with one sub-chain agent service, and the positioning authentication chain and the quality authentication chain are respectively communicated and shared with the management chain through a pair of independent cross-chain agent service and sub-chain agent service.
In one embodiment, the acceptance staff responsibility specification comprises whether acceptance staff check the engineering quality on site on time, whether the stay time of the acceptance staff at the engineering quality acceptance site meets the specified minimum time limit requirement, and whether the acceptance staff perform regular quality spot check and routing inspection.
In one embodiment, the positioning authentication chain acquires the positioning information through a server outside a decentralized predictive engine access chain of the positioning authentication chain, and the quality authentication chain acquires the quality acceptance information through a server outside the decentralized predictive engine access chain of the quality authentication chain.
According to another aspect of the invention, a construction acceptance management system based on a block chain cross-chain network is provided, which comprises the block chain cross-chain network, an off-chain server and an acceptance staff positioning system, wherein the block chain cross-chain network comprises a positioning certification chain, a quality certification chain and a management chain, the positioning certification chain comprises an acceptance staff responsibility specification intelligent contract, and the quality certification chain comprises an engineering quality acceptance standard intelligent contract; wherein, the first and the second end of the pipe are connected with each other,
the inspection and acceptance personnel positioning system is used for acquiring positioning information of inspection and acceptance personnel on a construction site;
the off-chain server is used for storing positioning information acquired by the checking and accepting personnel positioning system and quality checking and accepting information collected by checking and accepting personnel at a checking and accepting place;
the positioning authentication chain is used for acquiring positioning information, carrying out Hash operation to obtain a positioning Hash value, sharing the positioning Hash value to the management chain, judging whether the positioning information meets the compliance through the acceptance personnel responsibility specification intelligent contract, and sharing the judgment result to the management chain;
the quality certification chain is used for acquiring quality acceptance information matched with the positioning information, carrying out Hash operation to obtain a quality Hash value, sharing the quality Hash value to the management chain, determining the corresponding matched quality acceptance information based on the quality Hash value decrypted by the management chain, judging whether the quality acceptance information is in compliance or not according to the intelligent contract of the engineering quality acceptance standard, and sharing the judgment result to the management chain;
the management chain is used for cross-chain cooperation full-flow management and control and multi-party information sharing among the authentication chains, meanwhile, the positioning hash value is used as a key to encrypt the matched quality hash value to obtain a quality ciphertext, and when the positioning information is judged to be in compliance, the corresponding positioning hash value is backtracked to be used as the key to decrypt the quality ciphertext to obtain the matched quality hash value and the matched quality hash value is shared to the quality authentication chain.
In one embodiment, the acceptance personnel positioning system is a UWB acceptance personnel positioning system, the UWB acceptance personnel positioning system comprises a UWB positioning base station deployed in a construction site, a UWB positioning tag, a UWB communication base station and a personnel positioning engine, and the personnel positioning engine is integrated with position information of each acceptance site, quality acceptance criteria and a quality acceptance table; wherein, the first and the second end of the pipe are connected with each other,
when the check-up personnel carry the mobile terminal with the UWB positioning tag to go to the check-up place, the UWB positioning base station of the construction site detects the UWB positioning tag, and transmits the time stamp data frame to the personnel positioning engine through the UWB communication base station, the personnel positioning engine is used for calculating the positioning information of the check-up personnel and storing the positioning information into the off-chain server, and automatically sends the quality check-up standard and the quality check-up form corresponding to the check-up place to the mobile terminal for the check-up personnel to look up and fill up according to the positioning information.
In general, compared with the prior art, the above technical solutions contemplated by the present invention can achieve the following beneficial effects:
1. the construction quality acceptance is carried out based on the block chain technology, so that the problems of difficult source tracing and easy tampering of the engineering quality acceptance information are solved, and the reliability, traceability and transparency of the engineering quality acceptance work are improved;
2. the invention respectively carries out compliance examination on the personnel positioning information and the quality acceptance information at the same acceptance point, and only when both the personnel positioning information and the quality acceptance information are in compliance, the personnel positioning information and the quality acceptance information pass the examination, thereby standardizing the responsibility of the acceptance personnel;
3. in addition, because the block chain has more data, quality acceptance information of the same acceptance site and positioning information of an acceptance person when filling the quality acceptance information are paired by introducing an encryption and decryption algorithm, so that data disorder of compliance examination and calling is avoided, and the privacy of the data can be improved.
Drawings
Fig. 1 is a schematic structural diagram of a constructed blockchain inter-chain network according to an embodiment.
FIG. 2 is a flowchart illustrating the steps of compliance review, in accordance with one embodiment.
Fig. 3 is a schematic structural diagram of a UWB acceptance person positioning system according to an embodiment.
FIG. 4 is a diagram of an encryption pair and a decryption pair, according to one embodiment.
Fig. 5 is a flowchart of construction acceptance management based on a block chain inter-chain network according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention. In addition, the technical features involved in the respective embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
To facilitate understanding of the present invention, a construction acceptance management system of a block chain inter-chain network is described first. The construction acceptance management system comprises a block chain cross-chain network, an off-chain server and an acceptance personnel positioning system. Fig. 1 shows a block chain cross-chain network constructed in an embodiment, which mainly includes a positioning authentication chain, a quality authentication chain, and a management chain, where the management chain performs information interaction with the positioning authentication chain and the quality authentication chain through a cross-chain cooperative service, the positioning authentication chain is provided with an acceptance staff responsibility specification intelligent contract, and the quality authentication chain includes an engineering quality acceptance standard intelligent contract.
In one embodiment, the cross-chain collaboration service includes a cross-chain proxy service and a sub-chain proxy service, which are main service hubs for accepting cross-chain business processing. One cross-link agent service is uniquely matched with one sub-chain agent service, and the positioning authentication chain and the quality authentication chain are respectively communicated and shared with the management chain through a pair of independent cross-link agent service and sub-chain agent service, so that the safety and the credibility of data interaction between the management chain and the authentication chain are ensured. The cross-link proxy service is used for monitoring and synchronizing data on the management chain, and the sub-link proxy service is responsible for communicating with the positioning authentication chain and the quality authentication chain and performing trusted data interaction with the cross-link proxy service. The management chain records the standing book transaction data of all the authentication chains, and can provide opinion feedback for related data information, thereby realizing problem tracing and collaborative control. The management chain is composed of a main node and a plurality of management nodes and is used for cross-chain cooperation full-process management and control and multi-party information sharing among the authentication chains, the main node can be determined to be held by a government party or a construction party according to the enterprise property, and the management nodes are held by other participants except the main node. In the node information sharing process, different participant nodes have different authorities in a block chain cross-chain network, for example, a government node has the authority of information inquiry, a construction party has the authority of information inquiry and construction information uploading, a supervisor node has the authority of information inquiry and acceptance information uploading, and a construction party node has the authority of information inquiry and information audit.
The intelligent contract is a rule written by certain business logic and can automatically execute the protocol meeting the requirement of the rule. The construction acceptance management method mainly comprises compliance examination executed by one or more parties.
FIG. 2 is a flowchart illustrating the steps of the compliance review in one embodiment, which includes the following steps.
Step S100: and respectively storing the positioning information of the acceptance personnel on the construction site and the collected quality acceptance information into the out-of-chain server.
When the inspection and acceptance personnel go to the inspection and acceptance site to execute quality inspection and acceptance work, the positioning information of the inspection and acceptance personnel on the construction site and the collected quality inspection and acceptance information are respectively stored in the off-chain server. The positioning information can be acquired through a positioning system, the quality acceptance information can be acquired through a filled and submitted quality acceptance form, and the selection of the positioning system and the acquisition mode of the quality acceptance form can be flexibly selected.
In this embodiment, specifically, the UWB acceptance personnel positioning system integrated with the engineering BIM model parameters is used to simultaneously implement the positioning and transmission quality acceptance criteria and tables. The BIM model parameters refer to coordinates of each acceptance site in a UWB system, acceptance standard parameters, design parameters of components, parameter requirements of material equipment and the like in a BIM model designed according to national standards, local standards, industrial standards and enterprise standards of construction engineering quality acceptance specifications, such as the size and strength grade of a concrete column, the service performance and the installation quality of an elevator. The UWB acceptance personnel positioning system can generate a quality acceptance table corresponding to an acceptance point after integrating engineering design BIM model parameters. The UWB technology has the advantages of high positioning precision, strong penetrating power, high resolution and the like, can work indoors and outdoors, is suitable for complex environments of construction sites, can record the historical acceptance activity track and the residence time of acceptance sites of acceptance personnel in real time by positioning the engineering quality acceptance personnel.
It will be appreciated that UWB acceptance officer positioning systems need to be deployed prior to compliance review. In this embodiment, as shown in fig. 3, the UWB acceptance personnel positioning system includes a UWB positioning base station, a UWB positioning tag, a UWB communication base station and a personnel positioning engine deployed on a construction site, and the personnel positioning engine is integrated with position information of each acceptance site, quality acceptance criteria and a quality acceptance table corresponding to each acceptance site formed according to BIM model parameters. Specifically, UWB positioning base stations are installed at necessary coverage positions of signals in a construction site, the UWB positioning base stations adopt remote UWB base station VDU2506, all UWB base stations are deployed on the same horizontal plane, the transverse deployment interval is 200-400 meters, when the height of a building is higher than 50 meters, a group of UWB base station horizontal planes are additionally arranged, the longitudinal deployment interval is not larger than 50 meters, UWB communication base stations and personnel positioning engines are arranged and debugged, and therefore a UWB acceptance personnel positioning system is established in the construction site.
At this time, step S100 specifically includes the following steps:
step S110: the checking and accepting personnel carry the mobile terminal provided with the UWB positioning tag to go to a checking and accepting place, and when the UWB positioning base station of a construction site detects the UWB positioning tag, the time stamp data frame is transmitted to the personnel positioning engine through the UWB communication base station.
The checking and accepting personnel firstly input checking and accepting personnel information on the mobile terminal provided with the UWB positioning tag, then the mobile terminal can be carried to go to a checking and accepting place, the UWB positioning base station and the positioning tag carried by the checking and accepting personnel carry out wireless positioning communication by adopting UWB signals, the difference of the propagation time of the signals between the positioning tag and the base station is obtained, and the signals are transmitted back to the UWB communication base station. The UWB positioning tag is powered by a battery and is borne on a mobile terminal carried by an acceptance person, and the position and the movement track of the acceptance person are determined in real time by transmitting UWB signals to a peripheral UWB positioning base station. The UWB communication base station covers the positioning areas of all the UWB positioning base stations and is used for wirelessly receiving the timestamp data frames returned by all the UWB positioning base stations in the coverage area.
Step S120: the personnel positioning engine calculates the positioning information of the checking and accepting personnel and stores the positioning information into the out-link server, and the quality checking and accepting form of the corresponding checking and accepting place is automatically sent to the mobile terminal according to the positioning information.
The personnel positioning engine is connected with the UWB communication base stations and used for receiving the propagation time difference returned by all the UWB positioning base stations, resolving by using a TDOA positioning algorithm, and calculating the three-dimensional position information of the acceptance personnel carrying the positioning labels by using the time difference of signals received by the UWB base stations. That is to say, the positioning information of the acceptance personnel is obtained and stored in the out-of-link server by the acceptance personnel carrying the UWB positioning tag through detection and identification of the UWB positioning base station, acquisition of the UWB communication base station and calculation of the personnel positioning engine.
Meanwhile, because the UWB positioning system is integrated with the BIM model, the UWB coordinates of each acceptance place and the key component or material equipment can be determined, when the distance between an acceptance person and an acceptance place inspection lot is less than 2 meters, the personnel positioning engine automatically sends the relevant quality acceptance standard and the quality acceptance table to the mobile terminal through the wireless network, and the mobile terminal provides a visual operation interface and displays the acceptance requirements of the acceptance lot or the parameter standard of the key component equipment.
Step S130: and (4) the quality acceptance form on the mobile terminal is filled and submitted by an acceptance staff, and the quality acceptance information in the quality acceptance form is collected and stored in the out-of-chain server.
And the quality inspection of the inspection lot is carried out by the inspection personnel according to the inspection standard displayed by the mobile terminal, the quality inspection form is filled on line through the visual operation interface of the mobile terminal, and the information of the inspection personnel and the form information are submitted in the form of a packed file and stored in an out-of-chain server.
Specifically, the quality acceptance information includes a construction log, a construction organization information table and a project quality acceptance table which are filled on line by the mobile terminal. The construction log comprises information of constructors, engineering project responsible persons, log recorders, construction dates and meteorology, engineering project names, quality safety technical indexes, production activity contents, completed work and the like. The construction organization information table comprises information such as project names, places, quantity, unit or subsection project information, principal persons of total packages and subcontracting units, construction team leaders, construction unit quality inspectors, supervision engineers, quality supervision and acceptance responsible persons and the like. The quality acceptance table comprises information of materials, sizes, impression quality, acceptance parameter values, material in-out field data conditions, quality control data conditions, safety and main use function conditions, comprehensive acceptance conclusions and the like of the unit inspection batch components or equipment and the like.
Therefore, the collection and storage of the positioning information and the quality acceptance information are completed.
In one embodiment, the out-of-chain server comprises a positioning system server and each participant server, wherein the positioning information is stored in the positioning system server and the quality acceptance information is stored in the participant server actually performing the acceptance work.
Step S200: the positioning authentication chain acquires positioning information, carries out Hash operation to obtain a positioning Hash value, shares the positioning Hash value to the management chain, acquires quality acceptance information matched with the positioning information, carries out Hash operation to obtain a quality Hash value, shares the quality Hash value to the management chain, and encrypts the matched quality Hash value by taking the positioning Hash value as a key to obtain a quality ciphertext.
Specifically, a centralized prediction machine is arranged on each of the positioning certification chain and the quality certification chain. The decentralized prediction machine is a unidirectional digital agent, realizes that a block chain actively acquires data outside the chain, links and feeds back information data to an intelligent contract, and realizes interaction between the data outside the chain and the block chain. The decentralized prediction machine adopts a Trusted Execution Environment (TEE) technology, and multiple nodes execute and verify results together, so that fault points such as node damage or offline are prevented. The positioning authentication chain accesses the server outside the chain through the decentralized prediction machine of the positioning authentication chain to obtain the positioning information, and the quality authentication chain accesses the server outside the chain through the decentralized prediction machine of the quality authentication chain to obtain the quality acceptance information. And the two authentication chains respectively obtain a positioning hash value and a quality hash value corresponding to the file through hash operation, and share the two matched hash values to the management chain. And encrypting the quality hash value by using the positioning hash value as a symmetric encryption key through an AES encryption method to obtain a quality ciphertext and storing the quality ciphertext in a management chain. Through the mechanism of the decentralized oracle, the decentralized oracle can upload the information file to the authentication chain and feed back the information file to the intelligent contract of the authentication chain, and meanwhile, the original information data acquired by the oracle and the examination result of the intelligent contract are both reserved on the block chain.
Step S300: the positioning authentication chain judges whether the positioning information meets the compliance through the intelligent contract of the acceptance staff responsibility specification and shares the judgment result to the management chain.
The intelligent contract of the responsibility specification of the acceptance staff is compiled in advance according to the responsibility specification of the acceptance staff, and comprises whether the acceptance staff checks the project quality on site on time, whether the stay time of the acceptance staff at the project quality acceptance site meets the specified minimum time limit requirement, and whether the acceptance staff performs regular quality spot check and routing inspection. Specifically, the method can be used for judging whether the coordinates of the checking and accepting personnel arrive within 10 m of the coordinates of the checking and accepting place on time, whether the checking and accepting personnel stay within 10 m of the coordinates of the checking and accepting place for more than 15 minutes, and whether the checking and accepting personnel regularly carry out quality spot check and routing inspection according to the contract requirements. And (4) automatically executing information compliance examination by the intelligent contract according to the acceptance staff responsibility specification, and if at least one item in the examination does not meet the preset value of the intelligent contract, failing to pass the examination. And finally, sending a positioning examination result to a management node linked with the authentication chain in the management chain through the cross-chain cooperative service.
Step S400: and when the positioning information is judged to be in compliance, the management chain backtracks the corresponding positioning hash value as a key to decrypt the quality ciphertext to obtain a matched quality hash value and shares the matched quality hash value to the quality authentication chain.
When the management node on the management chain receives the positioning examination result and is in compliance, the traceability acceptance staff positioning information file and the positioning hash value thereof are reported through the examination result, the positioning hash value is used as a secret key, the quality ciphertext on the management chain is decrypted through an AES decryption method, and the matched quality hash value is obtained and shared to the quality authentication chain. FIG. 4 is a diagram illustrating an encryption pairing and a decryption pairing, in one embodiment. Through the encryption pairing and the decryption pairing of the cross-link information, the information on different authentication links is paired one by one.
In one embodiment, step S400 further includes;
and when the positioning information is judged to be not compliant, the positioning authentication chain sends warning information to a management node which is linked with the authentication chain in the management chain through the chain-crossing cooperative service, and after the construction side node checks and sees the warning information, the construction side and the supervision side are informed to perform rework and rework in time and then perform acceptance again.
Step S500: and the quality authentication chain determines corresponding quality acceptance information based on the decrypted quality hash value, judges whether the quality acceptance information is in compliance or not through an intelligent contract of an engineering quality acceptance standard, and shares a judgment result to the management chain.
And the quality authentication chain performs pairing verification on the decrypted quality hash value and the hash value on the quality authentication chain to obtain quality acceptance information matched with the current positioning information. And feeding back the corresponding quality acceptance information obtained by decryption pairing to an intelligent contract of the engineering quality acceptance standard on the quality identification chain, and automatically executing information compliance examination. And if at least one item in the examination does not meet the preset value of the intelligent contract, the examination and acceptance are not passed. And finally, sending a quality examination result to a management node linked with the authentication chain in the management chain through the cross-chain cooperative service. The intelligent contract of the engineering quality acceptance standard is written in advance according to the parameters of the BIM model.
Step S600: and when the quality acceptance information is judged to be in compliance, the management chain judges that the compliance of the current participant passes.
In an embodiment, step S600 further includes:
and when the quality acceptance information is judged to be not compliant, the quality certification chain sends warning information to a management node connected with the quality certification chain in the management chain through the cross-chain cooperative service, and after the construction party node checks and sees the warning information, the construction party and the supervision party are informed to rework and then accept again in time.
Therefore, through the steps S100 to S600, the quality acceptance work of the current execution acceptance party is completed. Specifically, the actual engineering project is jointly accepted by multiple parties. In the embodiment, the construction acceptance management method comprises compliance examination of self-inspection of a construction side and compliance examination of inspection of a supervisor side, when the compliance examination of the self-inspection of the construction side passes, the management chain informs the supervisor side of performing the compliance examination, and when the compliance examination of the inspection of the supervisor side passes, a quality acceptance qualified report is sent.
Fig. 5 is a flowchart illustrating steps of the constructor and the proctorial side participating in compliance review, which specifically includes the following steps.
(a) The deployment construction acceptance management system comprises the block chain cross-chain network, the UWB acceptance personnel positioning system and the out-of-chain server.
(b) After finishing all construction processes, the constructor self-checking personnel can carry the mobile terminal provided with the UWB positioning tag to go to check and accept, and store the collected positioning information and quality check and accept information in the UWB positioning system server and the constructor server respectively.
(c) The positioning authentication chain and the quality authentication chain respectively access a UWB positioning system server and a construction side server through a prediction machine, a positioning hash value and a quality hash value corresponding to the self-checking personnel positioning information file and the quality acceptance information file are obtained through hash operation, the hash values are shared to a management chain, the positioning hash value is used as a symmetric encryption key, the quality hash value is encrypted through an AES encryption method, and a quality ciphertext is obtained and stored in the management chain.
(d) And feeding back the acquired UWB positioning coordinate information to an acceptance staff responsibility standard intelligent contract on the positioning authentication chain, and automatically executing information compliance examination. If at least one item in the examination does not meet the intelligent contract preset value, the examination does not pass, warning information is sent to the management node connected with the authentication chain in the management chain through the chain-crossing cooperative service, and after the construction side node checks the warning information, the construction side is informed to perform rework and secondary inspection in time. And if the acquired information meets all preset values in the intelligent contract, the information is checked to pass, the self-checking personnel positioning information file and the positioning hash value thereof are traced back through the checking result report, the positioning hash value is used as a key, the quality ciphertext on the management chain is decrypted by an AES decryption method to obtain a quality hash value, and finally the quality hash value is matched with the hash value on the quality authentication chain for verification, so that the original quality acceptance information file is obtained.
(e) And feeding back the corresponding quality acceptance information obtained by decryption pairing to an intelligent contract of the engineering quality acceptance standard on the quality confirmation chain, and automatically executing information compliance examination. If at least one item in the examination does not meet the intelligent contract preset value, the examination and acceptance do not pass, warning information is sent to the management node connected with the authentication chain in the management chain through the chain-crossing cooperative service, and after the construction party node examines the warning information, the construction party is timely notified to carry out rework and secondary inspection; if the acquired information meets all preset values in the intelligent contract, the acceptance is passed, and the construction party can send a quality acceptance request to the supervision party.
(f) And after the proctoring party receives the quality acceptance request of the construction party, entrusting a professional proctoring engineer to carry a mobile terminal provided with the UWB positioning tag to go to acceptance, and storing the collected positioning information and the collected quality acceptance information in a UWB positioning system server and a proctoring party server respectively.
(g) The quality authentication chain and the positioning authentication chain respectively access the supervisor server and the UWB positioning system server again through the prediction machine, the obtained supervisor positioning information file and the quality acceptance information file are subjected to Hash operation to obtain a positioning Hash value and a quality Hash value corresponding to the files, the Hash values are shared to the management chain, the positioning Hash value is used as a symmetric encryption key, the quality Hash value is encrypted through an AES encryption method, and a quality ciphertext is obtained and stored in the management chain.
(h) And feeding back the acquired UWB positioning coordinate information to an acceptance staff responsibility standard intelligent contract on a positioning authentication chain, and automatically executing information compliance examination. If at least one item in the audit does not meet the preset value of the intelligent contract, the audit does not pass, warning information is sent to a management node connected with the authentication chain in the management chain through the cross-chain cooperative service, and after the construction side node checks and sees the warning information, the construction side and the supervision side are informed to do rework and repair and carry out secondary inspection in time; and if the acquired information meets all preset values in the intelligent contract, the examination is passed, the traceability manager positioning information file and the positioning hash value thereof are reported through the examination result, the positioning hash value is used as a key, the quality ciphertext on the management chain is decrypted by an AES decryption method to obtain a quality hash value, and finally the quality hash value is matched with the hash value on the quality authentication chain for verification to obtain the original quality acceptance information file.
(i) And feeding back the corresponding quality acceptance information obtained by decryption pairing to an intelligent contract of the engineering quality acceptance standard on the quality identification chain, and automatically executing information compliance examination. If at least one item in the examination does not meet the preset value of the intelligent contract, the examination and acceptance do not pass, warning information is sent to a management node connected with the authentication chain in the management chain through the chain-crossing cooperative service, and after the construction party node checks and sees the warning information, the construction party and the supervision party are timely notified to carry out rework and repair and secondary inspection; and if the acquired information meets all preset values in the intelligent contract, the acceptance is passed, and the supervisor can send a quality acceptance qualification report to the construction side management node through the cross-chain cooperative service.
(j) And after the quality acceptance qualified report is received and audited by the management node of the construction party, adding feedback opinions to the report document to generate a new file, uploading the new file to the management chain, digitally signing the file by an uploader of the file, recording feedback affairs on a management chain account book, and ending the quality acceptance work of the engineering project.
Correspondingly, the application also relates to a construction acceptance management system based on the block chain cross-chain network, which comprises the block chain cross-chain network, an off-chain server and an acceptance staff positioning system, wherein the block chain cross-chain network comprises a positioning authentication chain, a quality authentication chain and a management chain, the authentication chain comprises an acceptance staff responsibility standard intelligent contract, and the quality authentication chain comprises an engineering quality acceptance standard intelligent contract; wherein the content of the first and second substances,
the checking and accepting personnel positioning system is used for acquiring the positioning information of the checking and accepting personnel at the checking place;
the off-chain server is used for storing the positioning information acquired by the acceptance checking personnel positioning system and the quality acceptance checking information collected by the acceptance checking personnel at an acceptance checking place;
the positioning authentication chain is used for acquiring positioning information, performing hash operation to obtain a positioning hash value, sharing the positioning hash value to the management chain, judging whether the positioning information meets the compliance through an intelligent contract of an acceptance inspection personnel responsibility specification, and sharing a judgment result to the management chain;
the quality certification chain is used for acquiring quality acceptance information matched with the positioning information, carrying out Hash operation to obtain a quality Hash value, sharing the quality Hash value to the management chain, determining corresponding quality acceptance information based on the quality Hash value decrypted by the management chain, judging whether the quality acceptance information is in compliance or not through an engineering quality acceptance standard intelligent contract, and sharing a judgment result to the management chain;
and the management chain is used for encrypting the matched quality hash value by taking the positioning hash value as a key to obtain a quality ciphertext, and when the positioning information is judged to be in compliance, backtracking the corresponding positioning hash value as the key to decrypt the quality ciphertext to obtain the matched quality hash value and sharing the matched quality hash value to the quality authentication chain.
Furthermore, the checking and accepting person positioning system is a UWB checking and accepting person positioning system, the UWB checking and accepting person positioning system comprises a UWB positioning base station, a UWB positioning tag, a UWB communication base station and a person positioning engine which are deployed on a construction site, and position information, quality checking and accepting standards and quality checking and accepting tables of all checking and accepting places are integrated on the person positioning engine; when the check-up personnel carry the mobile terminal with the UWB positioning tag to go to the check-up place, the UWB positioning base station of the construction site detects the UWB positioning tag, the time stamp data frame is transmitted to the personnel positioning engine through the UWB communication base station, the personnel positioning engine is used for calculating the positioning information of the check-up personnel and storing the positioning information into the off-chain server, and the quality check-up standard and the quality check-up form corresponding to the check-up place are automatically sent to the mobile terminal according to the positioning information to be consulted and filled in by the check-up personnel.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (10)
1. A construction acceptance management method based on a block chain cross-chain network is characterized in that the block chain cross-chain network comprises a positioning certification chain, a quality certification chain and a management chain, wherein the positioning certification chain comprises an acceptance staff responsibility specification intelligent contract, the quality certification chain comprises an engineering quality acceptance standard intelligent contract, the construction acceptance management method comprises compliance review,
the compliance review includes:
respectively storing the positioning information of the acceptance personnel on the construction site and the collected quality acceptance information into an out-of-chain server;
the positioning authentication chain acquires positioning information, performs Hash operation to obtain a positioning Hash value, and then shares the positioning Hash value to the management chain, the quality authentication chain acquires quality acceptance information matched with the positioning information, performs Hash operation to obtain a quality Hash value, and then shares the quality Hash value to the management chain, and the management chain encrypts the matched quality Hash value by taking the positioning Hash value as a secret key to obtain a quality ciphertext;
the positioning authentication chain judges whether the positioning information is in compliance or not through the acceptance staff responsibility specification intelligent contract and shares the judgment result to the management chain;
when the positioning information is judged to be in compliance, the positioning hash value corresponding to the backtracking of the management chain is used as a key to decrypt the quality ciphertext to obtain a matched quality hash value and the matched quality hash value is shared to the quality authentication chain;
the quality certification chain determines corresponding quality acceptance information based on the decrypted quality hash value, judges whether the quality acceptance information is in compliance or not through the intelligent contract of the engineering quality acceptance standard and shares the judgment result to the management chain;
and when the quality acceptance information is judged to be in compliance, the management chain determines that the compliance of the current participant passes.
2. The block chain inter-chain network-based construction acceptance management method according to claim 1,
and when the positioning information is judged to be not in compliance or when the quality acceptance information is judged to be not in compliance, the corresponding management node of the management chain prompts rework and re-acceptance.
3. The block chain inter-chain network-based construction acceptance management method according to claim 1, wherein the construction acceptance management method comprises compliance review of self-inspection by a construction party and compliance review of inspection by an inspection party, when the compliance review of the self-inspection by the construction party passes, the compliance review of the inspection by the inspection party is continuously executed, and when the compliance review of the inspection by the inspection party passes, a quality acceptance qualification report is sent to the construction party.
4. The construction acceptance management method based on the block chain cross-chain network as claimed in claim 1, characterized in that before the quality acceptance work is performed, a UWB acceptance staff positioning system is established, the UWB acceptance staff positioning system comprises a UWB positioning base station deployed at a construction site, a UWB positioning tag, a UWB communication base station and a staff positioning engine, and position information, quality acceptance criteria and a quality acceptance table of each acceptance location are integrated on the staff positioning engine;
the quality acceptance information of the personnel of will accepting in the job site's locating information and collection is accepted and is deposited in the outer server of chain respectively, includes:
an acceptance person carries a mobile terminal provided with a UWB positioning tag to go to an acceptance place, and when a UWB positioning base station on a construction site detects the UWB positioning tag, a timestamp data frame is transmitted to a person positioning engine through a UWB communication base station;
the personnel positioning engine calculates the positioning information of the acceptance personnel and stores the positioning information into the out-of-chain server, and automatically sends the quality acceptance standard and the quality acceptance table of the acceptance site where the acceptance personnel are located to the mobile terminal according to the positioning information;
and (4) the quality acceptance form on the mobile terminal is filled and submitted by an acceptance staff, and the quality acceptance information in the quality acceptance form is collected and stored in the out-of-chain server.
5. The method as claimed in claim 1, wherein the off-link servers include a positioning system server and participant servers, wherein the positioning information is stored in the positioning system server, and wherein the quality acceptance information is stored in the participant servers that actually perform acceptance work.
6. The construction acceptance management method based on the blockchain cross-chain network as claimed in claim 1, wherein the management chain implements information interaction with the positioning authentication chain and the quality authentication chain through a cross-chain cooperative service, the cross-chain cooperative service includes a cross-chain agent service and a sub-chain agent service, one cross-chain agent service uniquely matches one sub-chain agent service, and the positioning authentication chain and the quality authentication chain are respectively communicated and shared with the management chain by a pair of independent cross-chain agent service and sub-chain agent service.
7. The construction acceptance management method based on the block chain cross-chain network, as claimed in claim 1, wherein the acceptance staff responsibility specifications include whether the acceptance staff check the project quality on time, whether the stay time of the acceptance staff at the project quality acceptance site meets the specified minimum time limit requirement, and whether the acceptance staff perform regular quality spot check and patrol.
8. The construction acceptance management method based on the block chain cross-chain network, as claimed in claim 1, wherein the positioning certification chain obtains the positioning information through a decentralized talkspurt access chain external server of the positioning certification chain, and the quality certification chain obtains the quality acceptance information through the decentralized talkspurt access chain external server of the quality certification chain.
9. A construction acceptance management system based on a block chain cross-chain network is characterized by comprising the block chain cross-chain network, an off-chain server and an acceptance personnel positioning system, wherein the block chain cross-chain network comprises a positioning certification chain, a quality certification chain and a management chain, the positioning certification chain comprises an acceptance personnel responsibility specification intelligent contract, and the quality certification chain comprises an engineering quality acceptance standard intelligent contract; wherein, the first and the second end of the pipe are connected with each other,
the inspection and acceptance personnel positioning system is used for acquiring positioning information of inspection and acceptance personnel on a construction site;
the off-chain server is used for storing positioning information acquired by the checking and accepting personnel positioning system and quality checking and accepting information collected by checking and accepting personnel at a checking and accepting place;
the positioning authentication chain is used for acquiring positioning information, carrying out Hash operation to obtain a positioning Hash value, sharing the positioning Hash value to the management chain, judging whether the positioning information meets the compliance through the acceptance personnel responsibility specification intelligent contract, and sharing the judgment result to the management chain;
the quality certification chain is used for acquiring quality acceptance information matched with the positioning information, carrying out Hash operation to obtain a quality Hash value, sharing the quality Hash value to the management chain, determining the corresponding matched quality acceptance information based on the quality Hash value decrypted by the management chain, judging whether the quality acceptance information is in compliance or not according to the intelligent contract of the engineering quality acceptance standard, and sharing the judgment result to the management chain;
the management chain is used for cross-chain cooperation full-flow management and control and multi-party information sharing among the authentication chains, meanwhile, the positioning hash value is used as a key to encrypt the matched quality hash value to obtain a quality ciphertext, and when the positioning information is judged to be in compliance, the corresponding positioning hash value is backtracked to be used as the key to decrypt the quality ciphertext to obtain the matched quality hash value and the matched quality hash value is shared to the quality authentication chain.
10. The blockchain inter-chain network based construction acceptance management system of claim 9, wherein the acceptance personnel positioning system is a UWB acceptance personnel positioning system, the UWB acceptance personnel positioning system comprising a UWB positioning base station, a UWB positioning tag, a UWB communication base station and a personnel positioning engine deployed at a construction site, the personnel positioning engine having integrated thereon position information of each acceptance site, quality acceptance criteria and quality acceptance tables; wherein the content of the first and second substances,
when the check-up personnel carry the mobile terminal with the UWB positioning tag to go to the check-up place, the UWB positioning base station of the construction site detects the UWB positioning tag, and transmits the time stamp data frame to the personnel positioning engine through the UWB communication base station, the personnel positioning engine is used for calculating the positioning information of the check-up personnel and storing the positioning information into the off-chain server, and automatically sends the quality check-up standard and the quality check-up form corresponding to the check-up place to the mobile terminal for the check-up personnel to look up and fill up according to the positioning information.
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