CN115936540A - Digital witness sampling and detecting system for building engineering - Google Patents
Digital witness sampling and detecting system for building engineering Download PDFInfo
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Abstract
The invention discloses a digital witness sampling and detecting system for building engineering, which comprises a block chain layer, a sampling sensing layer, a data layer, an application layer and an access layer, wherein the block chain layer is used for encrypted transmission of data and classified storage of the data, and a color comparison algorithm is stored for color comparison between a sampling picture and a test block, the sampling sensing layer is used for scanning information sensing of an anti-counterfeiting two-dimensional code on the surface of the test block, when a detecting mechanism receives a sample, after the appearance of the concrete test block is checked, color comparison is carried out between the concrete test block and a shot picture, information in a chip is read and verified, whether the test block is replaced or not is verified, and after the verification is passed, sample information in the chip is automatically synchronized to the data layer through a sample verifying end, so that the situation that the sampling and sample sealing processes are supervised by an ineffective means in the sample sealing process is effectively avoided, the sample package falling is easily caused, and the authenticity of the test block is ensured.
Description
Technical Field
The invention relates to the field of digital information transmission, in particular to a digital witness sampling and detecting system for constructional engineering.
Background
The quality of construction engineering projects is directly related to city construction and development in China and the vital interests of people, and is an important object for government supervision. The quality of the concrete directly influences the quality and the service life of the construction engineering and the safety of life and property. With the rapid development of science and technology, the ready-mixed concrete industry is also rapidly developed, the competition is more intense, the production party may loose the quality control on the raw materials and the concrete production process for saving the production cost, and part of construction parties may loose the quality control on the field pouring process for purchasing inferior concrete or simplifying the commercial concrete pouring for use in consideration of economic benefit; the detection party is easy to directly cause the detection party, the construction party, the supervision party and other related responsibility main bodies to falsify in the commercial concrete detection link due to disordered competition, and finally the quality of the ready-mixed concrete is greatly fluctuated and even glides. Therefore, the new generation information technology is utilized to reinforce the concrete overall process quality supervision, the overall process quality tracing is realized, and the system has important significance for improving the quality safety management level of the construction engineering, but the existing witness sampling and detecting system mainly realizes the functions of facilitating each detecting unit to upload various collected data and issue an experiment report, and the following main problems are mainly existed in terms of the use condition of a construction department: the method has the advantages that advance reservation or appointed witness can not be realized, the identity of the witness for submission cannot be identified, and the situation of false sampling caused by communication between a construction party and the witness party can easily occur; in the sample sealing process, no effective means is used for monitoring the sampling and sample sealing processes, so that the sample is easy to drop; when the sample is sent to the detection center, witness persons are required to carry out accompanying delivery, but the accompanying delivery process cannot be supervised due to the fact that no relevant means exist; when the detection center receives the sample, the source of the sample cannot be tracked and managed, the sampling and sample sending fields or processes of the sample to be detected cannot be traced, and the authenticity of the source of the received sample cannot be verified; in order to solve the problem, the invention provides a digital witness sampling and detecting system for construction engineering.
Disclosure of Invention
The invention mainly aims to provide a digital witness sampling and detecting system for construction engineering, which can effectively solve the problems in the background technology: the existing witness sampling and detecting system mainly realizes the functions of facilitating each detecting unit to upload various collected data and issue an experiment report, and has the following main problems in terms of the use condition of a construction department: the method has the advantages that advance reservation or appointed witness can not be realized, the identity of the witness for submission cannot be identified, and the situation of false sampling caused by communication between a construction party and the witness party can easily occur; in the sample sealing process, no effective means is used for monitoring the sampling and sample sealing processes, so that the sample is easy to drop; when the sample is sent to the detection center, witness persons are required to carry out accompanying delivery, but the accompanying delivery process cannot be supervised due to no relevant means; when the detection center receives the sample, the source of the sample cannot be tracked and managed, the sampling and sample sending fields or processes of the sample to be detected cannot be traced, and the authenticity of the source of the received sample cannot be verified; once the construction witness sampling is in a problem, the quality of the whole project cannot be guaranteed, so that the serious quality problem and even more serious consequences of the whole project are easily caused.
In order to achieve the purpose, the invention adopts the technical scheme that:
a digital witness sampling and detecting system for building engineering comprises a block chain layer, a sampling sensing layer, a data layer, an application layer and an access layer, wherein the block chain layer is used for encrypted transmission of data and classified storage of the data, and a color comparison algorithm is stored for color comparison between a sampling picture and a test block, the sampling sensing layer is used for scanning and registering anti-counterfeiting two-dimensional codes on the surface of the test block, sensing information of the geographical position and the construction position of the test block and acquiring the picture of the test block, the data layer is used for scanning and registering the information stored by the anti-counterfeiting two-dimensional codes on a platform, associating specific parts, specific pictures and specific construction position information, acquiring data information of the test block, and performing classified storage on the acquired data information, the application layer is used for acquisition and input of the data, the access layer is used for user interaction, and a user can monitor each module of a large-screen access system through a mobile phone APP;
the block chain layer comprises a transmission encryption module, a color comparison algorithm module and a data classified storage module, wherein the transmission encryption module is used for encrypting the transmission of data information to construct a network transmission block chain, the color comparison algorithm module is used for performing color comparison between a sampling picture and a test block to be detected so as to detect the color similarity of the sampling test block and the test block to be detected to avoid the test block from being lost during the process of detection, and the data classified storage module is used for classifying and storing the transmission data in the block chain;
the sampling sensing layer comprises a picture acquisition module, a positioning module and an anti-counterfeiting module, the picture acquisition module is used for acquiring pictures of the test blocks, the positioning module is used for sensing information of geographical positions and construction positions of the test blocks, and the anti-counterfeiting module is used for sensing information stored in the anti-counterfeiting two-dimensional code.
The invention has the further improvement that the data layer comprises a picture database, an anti-counterfeiting database and a field database, wherein the picture database is used for collecting and storing pictures of the test blocks collected by the picture collecting module, the anti-counterfeiting database is used for collecting and storing the storage information of each anti-counterfeiting two-dimensional code, and the field database is used for collecting and storing the field data of the specific construction position.
The invention is further improved in that the application layer comprises a witness sampling module, a position calculating module, an anti-counterfeiting calculating module and a test detecting module, the witness sampling module is used for realizing GPS positioning and photographing in the processes of sample sampling and witness by a mobile phone client, the on-site sampling information and the witness sampling information are uploaded to a block chain system, the position calculating module is used for calculating the distance between the geographic position and the construction position of the test block so as to judge whether the position of the test block corresponds to the construction position, the anti-counterfeiting calculating module is used for scanning an anti-counterfeiting two-dimensional code on the surface of the test block and judging the authenticity of the test block and the anti-counterfeiting information and construction information of the test block, the test detecting module is used for detecting the authenticity of the test block and simultaneously carrying out mechanical detection on the test block, and after the mechanical detection testing machine of a detection unit finishes detection, the data including automatic acquisition of an original record, a force value curve graph, a broken pattern, detection data and a detection report are uploaded to a data layer and the unqualified data are transmitted back to construction personnel and managers through the block chain.
The invention is further improved in that the process framework comprises the following specific steps:
101. the constructor registers the witness note, and acquires the positioning position and checks the data position;
102. when sampling is carried out by a sampling person of a construction unit, after face recognition is passed, scanning a two-dimensional code on a received concrete transportation list to obtain concrete production information, then implanting an RFID chip into a concrete test block, writing the production information of the test block into the chip through a mobile phone NFC or chip implantation client, taking the chip as an identity of the concrete test block, photographing and positioning the concrete test block and the sampling person to finish sampling operation, and simultaneously matching the geographic position of the concrete test block with a construction position;
103. when receiving a sample, the detection mechanism checks the appearance of the concrete test block, then compares the color of the concrete test block with a shot picture, reads information in the chip and verifies the information by matching with the RFID chip card reader through the sample verification client, and automatically synchronizes the sample information in the chip to the data layer through the sample verification end after the verification is passed;
104. after the mechanical detection testing machine of the detection unit finishes detection, data including automatically acquired original records, a force value curve graph, a broken pattern graph, detection data and a detection report are uploaded to a data layer;
105. for the data of the concrete test block which is unqualified in detection, the construction unit processes the unqualified data through the mobile phone client to complete the unqualified closed loop detection, and the supervision department accesses the database to extract and supervise the detection result of the concrete test block.
The invention further improves that in step 103, the specific steps of comparing the appearance of the test block with the color of the shot picture are as follows:
1031. extracting the test block appearance image, acquiring a picture with the same visual angle as the picture image shot before, and smoothing the shot test block image and the picture image shot by constructors before to obtain a smooth image;
1032. segmenting the smooth image into superpixel graphs by using a SLIC superpixel segmentation method, and calculating the average color of each superpixel graph
And an average position->
Wherein the average color->
The calculation formula of (2) is as follows: />
Average ofPosition->
The calculation formula of (2) is as follows: />
Wherein is present>
Indicates the ith super pixel, pixel->
，/>
Is pixel->
Is selected based on the color vector of (4)>
Is pixel->
Is greater than or equal to>
Is->
In all pixels of the color image, based on the average color vector of the pixel in the image>
Is->
The average position vector of all the pixels in the image,
represents->
The number of middle pixels;
1033. calculating a color contrast value for each superpixel in a superpixel map
Obtaining a color contrast map, the color contrast value->
The calculation formula of (2) is as follows: />
Wherein->
Wherein
Represents->
And/or>
Is greater than or equal to>
Is to adjust the spatial weight of the contrast value,
represents->
And/or>
The Euclidean distance of; />
Is such that->
Is normalized by>
The value is 0.5, exp is exponential operation, device for combining or screening>
，/>
Is->
The average color vector of all pixels in->
Is->
The average position vector of all pixels in->
Represents the jth super pixel;
1034. calculating an overall color contrast value in a superpixel map
In said +>
The calculation formula of (c) is:
wherein n is the number of superpixels in the superpixel map, the calculated->
Contrast with the set color by a threshold value->
Making a comparison if->
If yes, the color is matched, the test block is not replaced, the next detection operation is carried out, and if yes, the judgment is made>
If the color is not matched, the test block is replaced, and the replacement information is transmitted to a supervision department.
The further improvement of the present invention is that the concrete steps for matching the geographical position and the construction position of the concrete test block in the step 102 are as follows:
1021. concrete longitude and latitude of measuring concrete test block geographical position and construction position
And (a)
) Calculating a distance value between them>
Enabling the geographical position of the concrete test block to be continuously close to the construction position according to the position relation, and opening a camera to collect a clear image of the construction position when the calculated h value is less than 20 m;
1022. averagely dividing the BIM design drawing of the construction engineering construction site into 8 by 8 small blocks and collecting clear images of construction positions
And all the divided characteristic point sequences of the construction engineering construction site design drawings
Substituting the similarity into a similarity formula one by one to calculate the similarity between the clear image of the construction position and one of the image units in the BIM design drawing of the construction engineering site, wherein the similarity ^ is greater than or equal to>
The calculation formula is as follows:
wherein m, n are the number of terms of the parameter, is based on the value of the parameter>
Is->
Is/is selected, is selected>
Is->
The jth item in the item (b) is to arrange the calculated similarity in a descending order to find one of the image units in the BIM design drawing of the construction engineering site corresponding to the maximum similarity;
1021. the concrete test block geographical position is accurately matched with the construction position through steps 1021 and 1022.
Compared with the prior art, the invention has the following beneficial effects:
1) The method comprises the steps that a worker registers a certificate of sight record sheet, collects a positioning position and checks a data position, when a sampling worker of a construction unit samples, after face recognition is passed, the two-dimensional code on a received concrete transportation sheet is scanned, concrete production information is obtained, an RFID chip is implanted into a concrete test block, the production information of the test block is written into the chip through a mobile phone NFC or a chip implanting client, the chip is used as an identity of the concrete test block, the concrete test block and the sampling worker are photographed and positioned, sampling operation is completed, meanwhile, the geographic position of the concrete test block is matched with a construction position, a detection mechanism checks the appearance of the concrete test block and then compares the color of the concrete test block with the photographed picture, the information in the chip is read and checked through a sample checking client in cooperation with an RFID chip card reader, whether the test block is replaced or not is checked, after the check is passed, the sample information in the chip is automatically synchronized to a data layer through a sample checking end, and therefore the situation that the sample is easy to monitor and fall off of the sample in the sample sealing process is effectively avoided;
2) Through the quick matching of the geographic position and the construction position of the concrete test block, the concrete use position of the concrete test block can be quickly searched, the matching effect of the concrete test block and the construction position can be quickly detected, the system breaks the barriers of information transmission existing in the traditional technology by realizing the information data of a plurality of concrete quality monitoring nodes such as serial basic data, raw material information, mixing ratio information, concrete production data, delivery transportation information, witness sampling information, maintenance data and collection detection data, solves the problem of information isolated island among a plurality of mutually independent subsystems, enables the data quality supervision data of the whole process of the concrete to be traceable, obtains a concrete quality management scheme with higher reliability, and solves the problems of long concrete quality supervision chain and difficult supervision.
Drawings
Fig. 1 is a schematic structural diagram of a digital witness sampling and detecting system for construction engineering.
Fig. 2 is a schematic view of a flow architecture of a digital witness sampling and detecting system for construction engineering.
Detailed Description
In order to make the technical means, the original features, the achieved objects and the effects of the present invention easy to understand, in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "a," "an," "two," and "three" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The present invention will be further described with reference to the following embodiments.
Example 1
In the embodiment, the staff registers the witness note, the acquisition of the positioning position and the checking of the data position are carried out, when the sampling staff of the construction unit takes a sample, after the face recognition passes, the two-dimensional code on the concrete transportation list which finishes receiving goods is scanned to obtain the concrete production information, then the RFID chip is implanted into the concrete test block, the production information of the test block is written into the chip through a mobile phone NFC or a chip implantation client, the chip is used as the identity of the concrete test block, the concrete test block and the sampling staff are photographed and positioned to finish the sampling operation, the matching of the geographical position of the concrete test block and the construction position is carried out simultaneously, when the detection mechanism takes the sample, the color comparison is carried out between the sample and the photographed picture after the appearance of the concrete test block is checked, the information in the chip is read and checked by matching with the RFID chip card reader through the sample checking client, checking whether the test block is replaced, after the check is passed, automatically synchronizing the sample information in the chip to the data layer through the sample checking end, thus effectively avoiding that no effective means is used for monitoring the sampling and sample sealing processes in the sample sealing process, and the condition that the sample falls off the package is easy to appear, and ensuring the authenticity of the test block, the specific scheme is that as shown in figure 1-figure 2, the digital witness sampling and detecting system for the building engineering comprises a block chain layer, a sampling sensing layer, a data layer, an application layer and an access layer, wherein the block chain layer is used for encrypted transmission of data and classified storage of the data, and a color comparison algorithm is stored for performing color comparison between a sampling picture and the test block, the sampling sensing layer is used for scanning information sensing of anti-counterfeiting two-dimensional codes on the surface of the test block, and performing information sensing on the geographic position and the construction position of the test block, meanwhile, a test block picture is collected, a data layer is used for scanning and registering information stored by the anti-counterfeiting two-dimensional code on a platform, associating specific parts, specific pictures and specific construction position information, obtaining test block data information, and storing the collected data information in a classified manner, an application layer is used for collecting and inputting data, an access layer is used for user interaction, and a user accesses each module of the system through a mobile phone APP and a monitoring large screen;
the block chain layer comprises a transmission encryption module, a color comparison algorithm module and a data classified storage module, wherein the transmission encryption module is used for encrypting the transmission of data information to construct a network transmission block chain, the color comparison algorithm module is used for performing color comparison between a sampling picture and a test block to be detected so as to detect the color similarity of the sampling test block and the test block to be detected to avoid the test block from being unpacked in the process of detection, and the data classified storage module is used for performing classified storage on transmission data in the block chain;
the sampling sensing layer comprises a picture acquisition module, a positioning module and an anti-counterfeiting module, the picture acquisition module is used for acquiring pictures of the test blocks, the positioning module is used for sensing information of geographic positions and construction positions of the test blocks, and the anti-counterfeiting module is used for sensing information stored in the anti-counterfeiting two-dimensional code.
In this embodiment, the data layer includes a picture database, an anti-fake database and a field database, the picture database is used for collecting and storing pictures of the test blocks collected by the picture collection module, the anti-fake database is used for collecting and storing storage information of each anti-fake two-dimensional code, and the field database is used for collecting and storing field data of specific construction positions.
In this embodiment, the application layer includes a witness sampling module, a position calculation module, an anti-counterfeiting calculation module and a test detection module, the witness sampling module is used for sampling samples and performing GPS positioning and photographing in the witness process through a mobile phone client, and uploading field sampling information and witness sampling information to the block chain system, the position calculation module is used for calculating the distance between the geographic position of the test block and the construction position to judge whether the position of the test block corresponds to the construction position, the anti-counterfeiting calculation module is used for scanning an anti-counterfeiting two-dimensional code on the surface of the test block to judge the authenticity of the test block and the anti-counterfeiting information and construction information of the test block, the test detection module is used for performing mechanical detection on the test block while detecting the authenticity of the test block, and after the mechanical detection testing machine of the detection unit completes detection, data including automatically collecting original records, force values, broken patterns, detection data and detection reports are uploaded to the data layer, and the unqualified data are returned to constructors and managers through the block chain.
In this embodiment, the process framework includes the following specific steps:
101. the constructor registers the witness notes and checks the acquisition of the positioning position and the data position;
102. when sampling is carried out by a sampling person of a construction unit, after face recognition is passed, scanning a two-dimensional code on a received concrete transportation list to obtain concrete production information, then implanting an RFID chip into a concrete test block, writing the production information of the test block into the chip through a mobile phone NFC or chip implantation client, taking the chip as an identity of the concrete test block, photographing and positioning the concrete test block and the sampling person to finish sampling operation, and simultaneously matching the geographic position of the concrete test block with a construction position;
103. when a detection mechanism receives a sample, the appearance of the concrete test block is checked, then the color of the concrete test block is compared with that of a shot picture, information in a chip is read and verified through a sample testing client matched with an RFID chip card reader, whether the test block is replaced or not is verified, and after the verification is passed, sample information in the chip is automatically synchronized to a data layer through a sample testing end;
104. after the mechanical detection testing machine of the detection unit finishes detection, data including automatically acquired original records, a force value curve graph, a broken pattern graph, detection data and a detection report are uploaded to a data layer;
105. for the data of the concrete test block which is unqualified in detection, the construction unit processes the unqualified data through the mobile phone client to complete the unqualified closed loop detection, and the supervision department accesses the database to extract and supervise the detection result of the concrete test block.
In this embodiment, the specific steps of comparing the appearance of the test block with the color of the shot picture in step 103 are:
1031. extracting the test block appearance image, acquiring a picture with the same visual angle as the picture image shot before, and smoothing the shot test block image and the picture image shot by constructors before to obtain a smooth image;
1032. segmenting the smooth image into superpixel graphs by using a SLIC superpixel segmentation method, and calculating the average color of each superpixel graph
And an average position->
Wherein the average color->
The calculation formula of (2) is as follows: />
Based on the mean position>
The calculation formula of (2) is as follows: />
Wherein is present>
Indicates the ith super pixel, pixel->
，/>
Is pixel->
Is selected based on the color vector of (4)>
Is pixel->
Is greater than or equal to>
Is->
The average color vector of all pixels in->
Is->
The average position vector of all pixels in->
Represents->
The number of middle pixels; />
1033. Calculating a color contrast value for each superpixel in a superpixel map
Obtaining a color contrast map and a color contrast value
The calculation formula of (2) is as follows: />
Wherein->
Wherein
Represents->
And/or>
Is greater than or equal to>
Is to adjust the spatial weight of the contrast value,
represents->
And/or>
The Euclidean distance of; />
Is such that->
In a normalization factor of (c), in>
A value of 0.5, exp is an exponential operation, is evaluated>
，/>
Is->
The average color vector of all pixels in->
Is->
The average position vector of all pixels in->
Represents the jth super pixel;
1034. calculating an overall color contrast value in a superpixel map
，/>
The calculation formula of (c) is: />
Wherein n is the number of superpixels in the superpixel map, the calculated->
Contrast with the set color by a threshold value->
For comparison, if
If yes, the color is matched, the test block is not replaced, the next detection operation is carried out, and if yes, the judgment is made>
If the color is not matched, the test block is replaced, and the replacement information is transmitted to the supervision department.
The embodiment can realize that: the method comprises the steps that a staff registers a witness note, acquisition of a positioning position and checking of a data position are carried out, a construction unit sampling staff scans a two-dimensional code on a received concrete transportation note after face recognition passes, concrete production information is obtained, an RFID chip is implanted into a concrete test block, production information of the test block is written into the chip through a mobile phone NFC or a chip implantation client, the chip serves as an identity of the concrete test block, photographing and positioning are carried out on the concrete test block and the sampling staff, sampling operation is completed, matching of the geographic position of the concrete test block and the construction position is carried out, a detection mechanism inspects the appearance of the concrete test block and carries out color comparison with a photographed picture when the concrete test block is received, the information in the chip is read and checked through a sample checking client in cooperation with an RFID chip card reader, whether the test block is replaced or not is checked, after the checking passes, sample information in the chip is automatically synchronized to a data layer through a sample checking end, and therefore the situation that sampling and sample sealing processes are not effectively prevented from being carried out by effective means, the sample sealing process, the sample easily occurs, and the sample package is easily monitored, and the authenticity of the sample is guaranteed.
Example 2
Embodiment 2 is based on embodiment 1, and adds fast matching to geographical position and construction position of concrete test block, which is beneficial to fast search concrete using position of concrete test block, and fast detecting matching effect of concrete test block and construction position, the system breaks the barrier of information transmission in the traditional technology by realizing information data of multiple concrete quality monitoring nodes such as serial basic data, raw material information, mixing ratio information, concrete production data, factory transportation information, witness sampling information, maintenance data, sample collection detection data, and the like, solves the problem of isolated island of information between multiple independent subsystems, makes the data quality supervision data of the whole process of concrete traceable, obtains a concrete quality management scheme with more refinement and stronger reliability, solves the problems of long concrete quality supervision chain and difficult supervision, the concrete scheme is that as shown in fig. 1-fig. 2, a digital witness sampling and detecting system for building engineering comprises a block chain layer, a sampling sensing layer, a data layer, an application layer and an access layer, wherein the block chain layer is used for encrypting and transmitting data and classifying and storing the data, and a color comparison algorithm is stored for comparing the color of a sampling picture and a test block, the sampling sensing layer is used for scanning and sensing anti-counterfeiting two-dimensional codes on the surface of the test block, sensing the information of the geographic position and the construction position of the test block and collecting the picture of the test block, the data layer is used for scanning and registering the information stored by the anti-counterfeiting two-dimensional codes on a platform, associating the information of specific parts, specific pictures and specific construction positions, obtaining the data information of the test block and storing the collected data information in a classified manner, the application layer is used for collecting and inputting data, the access layer is used for user interaction, and a user accesses each module of the system through the mobile phone APP and the monitoring large screen;
the block chain layer comprises a transmission encryption module, a color comparison algorithm module and a data classified storage module, wherein the transmission encryption module is used for encrypting the transmission of data information and constructing a network transmission block chain, the color comparison algorithm module is used for performing color comparison between a sampling picture and a test block to be checked so as to detect the color similarity of the sampling test block and the test block to be checked and avoid the test block from being lost during the process of being checked, and the data classified storage module is used for performing classified storage on transmission data in the block chain;
the sampling sensing layer comprises a picture acquisition module, a positioning module and an anti-counterfeiting module, the picture acquisition module is used for acquiring pictures of the test blocks, the positioning module is used for sensing information of geographic positions and construction positions of the test blocks, and the anti-counterfeiting module is used for sensing information stored in the anti-counterfeiting two-dimensional code.
In this embodiment, the data layer includes a picture database, an anti-fake database and a field database, the picture database is used for collecting and storing pictures of the test blocks collected by the picture collection module, the anti-fake database is used for collecting and storing storage information of each anti-fake two-dimensional code, and the field database is used for collecting and storing field data of specific construction positions.
In this embodiment, the application layer includes a witness sampling module, a position calculation module, an anti-counterfeiting calculation module and a test detection module, the witness sampling module is used for sampling samples and performing GPS positioning and photographing in the witness process through a mobile phone client, and uploading field sampling information and witness sampling information to the block chain system, the position calculation module is used for calculating the distance between the geographic position of the test block and the construction position to judge whether the position of the test block corresponds to the construction position, the anti-counterfeiting calculation module is used for scanning an anti-counterfeiting two-dimensional code on the surface of the test block to judge the authenticity of the test block and the anti-counterfeiting information and construction information of the test block, the test detection module is used for performing mechanical detection on the test block while detecting the authenticity of the test block, and after the mechanical detection testing machine of the detection unit completes detection, data including automatically collecting original records, force values, broken patterns, detection data and detection reports are uploaded to the data layer, and the unqualified data are returned to constructors and managers through the block chain.
In this embodiment, the process framework includes the following specific steps:
101. the constructor registers the witness note, and acquires the positioning position and checks the data position;
102. when sampling is carried out by a sampling person of a construction unit, after face recognition is passed, scanning a two-dimensional code on a received concrete transportation list to obtain concrete production information, then implanting an RFID chip into a concrete test block, writing the production information of the test block into the chip through a mobile phone NFC or a chip implantation client, taking the chip as an identity of the concrete test block, taking pictures of the concrete test block and the sampling person, positioning, completing sampling operation, and simultaneously matching the geographical position of the concrete test block with a construction position;
103. when receiving a sample, the detection mechanism checks the appearance of the concrete test block, then compares the color of the concrete test block with a shot picture, reads information in the chip and verifies the information by matching with the RFID chip card reader through the sample verification client, and automatically synchronizes the sample information in the chip to the data layer through the sample verification end after the verification is passed;
104. after the mechanical detection testing machine of the detection unit finishes detection, data including automatically acquired original records, a force value curve graph, a broken pattern graph, detection data and a detection report are uploaded to a data layer;
105. for the data of the concrete test block which is unqualified in detection, the construction unit processes the unqualified data through the mobile phone client to complete the unqualified closed loop detection, and the supervision department accesses the database to extract and supervise the detection result of the concrete test block.
In this embodiment, the specific steps of comparing the appearance of the test block with the color of the shot picture in step 103 are as follows:
1031. extracting the appearance image of the test block, acquiring a picture with the same visual angle as the picture image shot before, and smoothing the shot test block image and the shot picture image shot by constructors before to obtain a smooth image;
1032. segmenting the smooth image into superpixel graphs by using a SLIC superpixel segmentation method, and calculating the average color of each superpixel graph
And an average position->
In which the mean color->
The calculation formula of (2) is as follows: />
Based on the mean position>
The calculation formula of (2) is as follows: />
Wherein is present>
Indicates the ith super pixel, pixel->
，/>
Is pixel->
Is selected based on the color vector of (4)>
Is pixel->
Is greater than or equal to>
Is->
The average color vector of all pixels in->
Is->
The average position vector of all pixels in->
Represents->
The number of middle pixels;
1033. calculating a color contrast value for each superpixel in a superpixel map
Obtaining a color contrast map and a color contrast value
The calculation formula of (2) is as follows: />
Wherein->
Wherein
Represents->
And/or>
Is greater than or equal to>
Is to adjust the spatial weight of the contrast value,
represents->
And/or>
The Euclidean distance of (c); />
Is such that->
In a normalization factor of (c), in>
The value is 0.5, exp is exponential operation, device for combining or screening>
，/>
Is->
The average color vector of all pixels in->
Is->
The average position vector of all pixels in->
Represents the jth super pixel;
1034. meter for measuringCalculating the overall color contrast value in a superpixel map
，/>
The calculation formula of (2) is as follows: />
Wherein n is the number of superpixels in the superpixel map, the calculated->
Contrast with the set color by a threshold value->
Making a comparison if>
If yes, the color is matched, the test block is not replaced, the next detection operation is carried out, and if yes, the judgment is made>
If the color is not matched, the test block is replaced, and the replacement information is transmitted to the supervision department.
In this embodiment, the concrete step of matching the geographic position and the construction position of the concrete test block in step 102 is as follows:
1021. measuring concrete longitude and latitude of concrete test block geographical position and construction position
) And (a)
) Calculating a distance value between them>
Enabling the geographical position of the concrete test block to be continuously close to the construction position according to the position relation, and opening a camera to collect a clear image of the construction position when the calculated h value is less than 20 m;
1022. averagely dividing the BIM design drawing of the construction engineering construction site into 8 by 8 small blocks and collecting clear images of construction positions
And the completely divided characteristic point sequence of the construction engineering construction site design drawing
Substituting the similarity into a similarity formula one by one to calculate the similarity between the clear image of the construction position and one of the image units in the BIM design drawing of the construction engineering site, wherein the similarity ^ is greater than or equal to>
The calculation formula is as follows:
wherein m, n are the number of terms of the parameter, is based on the value of the parameter>
Is->
I term in (iv), is combined with a signal from a signal processing unit>
Is->
The jth item in the item (b) is to arrange the calculated similarity in a descending order to find one of the image units in the BIM design drawing of the construction engineering site corresponding to the maximum similarity;
1023. the concrete test block geographical position is accurately matched with the construction position through steps 1021 and 1022.
The embodiment can realize that: through the quick matching of the geographic position and the construction position of the concrete test block, the concrete use position of the concrete test block can be quickly searched, the matching effect of the concrete test block and the construction position can be quickly detected, the system breaks the barriers of information transmission existing in the traditional technology by realizing the information data of a plurality of concrete quality monitoring nodes such as serial basic data, raw material information, mixing ratio information, concrete production data, delivery transportation information, witness sampling information, maintenance data and collection detection data, solves the problem of information isolated island among a plurality of mutually independent subsystems, enables the data quality supervision data of the whole process of the concrete to be traceable, obtains a concrete quality management scheme with higher reliability, and solves the problems of long concrete quality supervision chain and difficult supervision.
Claims (8)
1. A digital witness sampling and detecting system for building engineering is characterized in that: its frame includes block chain layer, sample perception layer, data layer, application layer and access layer, block chain layer is used for the classified storage of the encryption transmission of data and data to it carries out the colour contrast to store colour contrast algorithm and be used for carrying out the colour contrast between sample picture and the test block, sample perception layer is used for carrying out the scanning information perception to the anti-fake two-dimensional code on test block surface, carries out the information perception to test block geographical position and construction position, gathers the test block picture simultaneously, the data layer is used for carrying out the scanning registration to the information of anti-fake two-dimensional code storage at the platform, and concrete position, concrete picture and concrete construction position information of relevance acquire test block data information, carry out classified storage to the data information who gathers, the application layer is used for the collection and the type-in of data, the access layer is used for user interaction, and the user passes through cell-phone APP and each module of control large-size screen access system.
2. The digital witness sampling and testing system for construction engineering as claimed in claim 1, wherein: the sampling sensing layer comprises a picture acquisition module, a positioning module and an anti-counterfeiting module, the picture acquisition module is used for acquiring pictures of the test blocks, the positioning module is used for sensing information of geographic positions and construction positions of the test blocks, and the anti-counterfeiting module is used for sensing information stored in the anti-counterfeiting two-dimensional code.
3. The digital witness sampling and testing system for construction engineering as claimed in claim 2, wherein: the data layer comprises a picture database, an anti-counterfeiting database and a field database, the picture database is used for collecting and storing pictures of the test blocks collected by the picture collecting module, the anti-counterfeiting database is used for collecting and storing storage information of each anti-counterfeiting two-dimensional code, and the field database is used for collecting and storing field data of specific construction positions.
4. The digital witness sampling and testing system for construction engineering as claimed in claim 3, wherein: the application layer comprises a witness sampling module, a position calculation module, an anti-counterfeiting calculation module and a test detection module, wherein the witness sampling module is used for realizing GPS positioning and photographing in the processes of sample sampling and witness finding through a mobile phone client, uploading field sampling information and witness sampling information to a block chain system, the position calculation module is used for calculating the distance between the geographic position and the construction position of the test block so as to judge whether the position of the test block corresponds to the construction position, the anti-counterfeiting calculation module is used for scanning an anti-counterfeiting two-dimensional code on the surface of the test block and judging the authenticity of the test block and the anti-counterfeiting information and construction information of the test block, the test detection module is used for carrying out mechanical detection on the test block while detecting the authenticity of the test block, and after the mechanical detection testing machine of a detection unit finishes detection, uploading data including automatic acquisition of original records, force value curve graphs, broken graphs, detection data and detection reports to the data layer, and returning the unmatched data to constructors and managers through the block chain.
5. The digital witness sampling and testing system for construction engineering as claimed in claim 4, wherein the usage flow framework of the witness sampling and testing system comprises the following steps:
101. the constructor registers the witness note, and acquires the positioning position and checks the data position;
102. when sampling is carried out by a sampling person of a construction unit, after face recognition is passed, scanning a two-dimensional code on a received concrete transportation list to obtain concrete production information, then implanting an RFID chip into a concrete test block, writing the production information of the test block into the chip through a mobile phone NFC or chip implantation client, taking the chip as an identity of the concrete test block, photographing and positioning the concrete test block and the sampling person to finish sampling operation, and simultaneously matching the geographic position of the concrete test block with a construction position;
103. when a detection mechanism receives a sample, the appearance of the concrete test block is checked, then the color of the concrete test block is compared with that of a shot picture, information in a chip is read and verified through a sample testing client matched with an RFID chip card reader, whether the test block is replaced or not is verified, and after the verification is passed, sample information in the chip is automatically synchronized to a data layer through a sample testing end;
104. after the mechanical detection testing machine of the detection unit finishes detection, data including automatically acquired original records, a force value curve graph, a broken pattern graph, detection data and a detection report are uploaded to a data layer;
105. for the data of the concrete test block which is unqualified in detection, the construction unit processes the unqualified data through the mobile phone client to complete the unqualified closed loop detection, and the supervision department accesses the database to extract and supervise the detection result of the concrete test block.
6. The digital witness sampling and testing system for construction engineering as claimed in claim 5, wherein: the specific steps of comparing the appearance of the test block with the color of the shot picture in step 103 are as follows:
1031. extracting the test block appearance image, acquiring a picture with the same visual angle as the picture image shot before, and smoothing the shot test block image and the picture image shot by constructors before to obtain a smooth image;
1032. segmenting the smooth image into superpixel graphs by using a SLIC superpixel segmentation method, and calculating the average color of each superpixel graph
And an average position->
In which the mean color->
The calculation formula of (2) is as follows: />
Based on the mean position>
The calculation formula of (2) is as follows: />
Wherein is present>
Indicates the ith super pixel, pixel->
，/>
Is pixel->
In a color vector of +>
Is pixel->
Is greater than or equal to>
Is->
The average color vector of all pixels in->
Is->
The average position vector of all the pixels in the image,
represents->
The number of middle pixels;
1033. calculating a color contrast value for each superpixel in a superpixel map
Obtaining a color contrast map, a color contrast value->
The calculation formula of (2) is as follows: />
In which>
In which
Represents->
And &>
In a Euclidean distance of->
Is to adjust the spatial weight of the contrast value,
represents->
And &>
The Euclidean distance of; />
Is made to->
Is normalized by>
A value of 0.5, exp is an exponential operation, is evaluated>
，/>
Is->
The average color vector of all pixels in->
Is->
The average position vector of all pixels in->
Represents the jth super pixel;
1034. calculating an overall color contrast value in a superpixel map
Said->
The calculation formula of (2) is as follows:
wherein n is the number of superpixels in the superpixel map, and the calculated->
Contrast with the set color by a threshold value->
Making a comparison if->
If yes, the color is matched, the test block is not replaced, the next detection operation is carried out, and if yes, the judgment is made>
If the color is not matched, the test block is replaced, and the replacement information is transmitted to a supervision department.
7. The digital witness sampling and testing system for construction engineering as claimed in claim 6, wherein: the concrete steps of matching the geographical position and the construction position of the concrete test block in the step 102 are as follows:
1021. concrete longitude and latitude of measuring concrete test block geographical position and construction position
And (a)
) Calculating the distance value between the two>
Enabling the geographical position of the concrete test block to be continuously close to the construction position according to the position relation, and opening a camera to collect a clear image of the construction position when the calculated h value is less than 20 m;
1022. averagely dividing the BIM design drawing of the construction engineering building site into 8-by-8 small blocks, and collecting clear images of construction positions
And the completely divided characteristic point sequence of the construction engineering construction site design drawing
Substituting the similarity into a similarity formula one by one to calculate the similarity between the clear image of the construction position and one of the image units in the BIM design drawing of the construction engineering site, wherein the similarity ^ is greater than or equal to>
The calculation formula is as follows:
wherein m, n are the number of terms of the parameter, is based on the value of the parameter>
Is->
Is/is selected, is selected>
Is->
The j item in the item (b) is to arrange the calculated similarity in a descending order to find one image unit in the BIM design drawing of the construction engineering building site corresponding to the maximum similarity;
1023. the concrete test block geographical position is accurately matched with the construction position through steps 1021 and 1022.
8. The digital witness sampling and testing system for construction engineering as claimed in claim 7, wherein: the block chain layer comprises a transmission encryption module, a color comparison algorithm module and a data classification storage module, the transmission encryption module is used for encrypting the transmission of data information to construct a network transmission block chain, the color comparison algorithm module is used for comparing colors between a sampling picture and a test block to be checked so as to detect the color similarity of the sampling test block and the test block to be checked to avoid the test block from being lost in the process of being checked, and the data classification storage module is used for classifying and storing the transmission data in the block chain.
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