CN112285212A - System and method for detecting concrete strength based on ultrasonic rebound method - Google Patents
System and method for detecting concrete strength based on ultrasonic rebound method Download PDFInfo
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Abstract
The invention provides a system and a method for detecting concrete strength based on an ultrasonic rebound method, which comprises a calibration instrument and a measuring instrument, wherein the calibration instrument is used for calibrating detection points in a concrete target measurement area; the measuring instrument is used for collecting corresponding ultrasonic detection data and rebound detection data in the detection point, and calculating the concrete strength according to the obtained detection data. The invention can help to accurately and conveniently mark the detection point in the ultrasonic rebound method, effectively reduce the labor cost and improve the reliability.
Description
Technical Field
The invention relates to the technical field of concrete measurement, in particular to a system and a method for detecting concrete strength based on an ultrasonic rebound method.
Background
At present, the strength detection of a concrete structure mainly adopts a rebound method and an ultrasonic-rebound comprehensive method, wherein the latter method is added with a plurality of pairs of ultrasonic measuring points on the basis of the former method, the compactness inside the concrete is judged by collecting ultrasonic data, and the strength of the concrete is comprehensively evaluated by combining the rebound data. Because of the comprehensive and representative characteristics of the ultrasonic-rebound comprehensive method, the method is gradually replacing the rebound method to become a main use method for nondestructive testing of the strength of concrete structures in highways and water transportation projects.
In the prior art, for the detection of the ultrasonic-rebound comprehensive method, some modern ultrasonic detectors and concrete rebound testers can intelligently acquire data and perform operation to obtain a detection result, but in the measurement process, measurement points still need to be manually arranged.
In the ultrasound-springback integration method, certain rules need to be met for the arrangement of the ultrasound measuring points and the arrangement of the springback measuring points, and at present, the arrangement of the ultrasound measuring points and the arrangement of the springback measuring points are usually carried out in an artificial calibration mode, and calibration personnel calibrate the measuring points by experience. However, the requirement on technical personnel is too high through a manual calibration setting mode, the efficiency is low, and the requirement on modern concrete strength detection cannot be met.
Disclosure of Invention
The invention aims to provide a system and a method for detecting concrete strength based on an ultrasonic rebound method, aiming at the technical problem of low calibration efficiency of detection points in the ultrasonic-rebound comprehensive method.
The purpose of the invention is realized by adopting the following technical scheme:
the invention discloses a system for detecting concrete strength based on an ultrasonic rebound method, which comprises the following steps: calibrating an instrument and a measuring instrument;
the calibration instrument comprises a square chassis, the square chassis is a square frame formed by splicing four side materials, at least two first semicircular notches are arranged on the outer edges of the four sides of the square frame, the at least two first semicircular notches are distributed at equal intervals, and the first semicircular notches on the two opposite sides of the square frame are correspondingly arranged; the first semicircular gap is used for calibrating a rebound detection area;
splicing upright posts are respectively arranged on one group of opposite corners of the square frame, holding rods are arranged on the splicing upright posts, the holding rods cross the pair of opposite corners of the square frame, and two ends of the holding rods respectively extend out of the square frame; the two ends of the holding rod are respectively connected with the calibration sheets through connecting rods, and the calibration sheets at the two ends of the holding rod are parallel to each other and are vertical to the projection of the holding rod on the horizontal plane; the square frame is positioned at the inner sides of the two calibration sheets, and the horizontal height of the calibration sheets is consistent with that of the square frame; at least two second semicircular gaps are formed in the outer side of each calibration sheet, the at least two second semicircular gaps are distributed at equal intervals, and the second semicircular gaps in the two calibration sheets are correspondingly arranged; the second semicircular gap is used for calibrating an ultrasonic detection area;
the measuring instrument comprises an ultrasonic measuring instrument, a concrete resiliometer and a calculating instrument, wherein the ultrasonic measuring instrument is used for measuring ultrasonic data of a target concrete area, and the concrete resiliometer is used for measuring a rebound value of the target concrete area; and the calculating instrument is used for calculating an ultrasonic sound velocity value according to the acquired ultrasonic data and calculating the concrete strength of the target area according to the acquired ultrasonic sound velocity value and the rebound value.
Further, the ultrasonic detector comprises an ultrasonic sensor, wherein the ultrasonic sensor is used for acquiring ultrasonic data of a target concrete area and sending the acquired ultrasonic data to the computing instrument;
the concrete resiliometer includes the resilience sensor, and the resilience sensor is used for acquireing resilience value data to the resilience value that will gather sends the computational instrument.
Further, in the calibration instrument, the side length L1 of the square frame is 200mm, the distance L2 between the first semicircular notches on each side of the square frame is 50mm, wherein the first semicircular notches on each side are symmetrically distributed along the center of the side, and the diameter L8 of each first semicircular notch is 10 mm; the length L3 of the holding rod is 400mm, and the projection of the center of the holding rod and the center point of the square frame on the horizontal plane are superposed; the length L4 of concatenation riser is 40mm, and the length L5 of calibration piece is 200mm, and the interval L6 between the semicircular notch of second on the calibration piece is 40mm, and the diameter L7 of the semicircular notch of second is 10mm, and each semicircular notch of second on the calibration piece is along the long limit central symmetry distribution of calibration piece.
Further, the calibration instrument is made of steel.
The invention also discloses a method of a system for detecting concrete strength based on an ultrasonic rebound method, which uses the system for detecting concrete strength based on the ultrasonic rebound method provided by the first aspect, and the method comprises the following steps:
placing a calibration instrument on a target concrete area to be detected, and keeping the calibration instrument stable through a holding rod;
drawing a circle of calibrated springback detection area on a target concrete area along four sides of a square frame by using chalk, wherein due to the existence of a first semicircular gap on the square frame, the chalk forms a dividing point of the springback detection area when passing through the first semicircular gap;
respectively drawing lines on the target concrete area along the outer sides of the two calibration sheets by using chalk, and calibrating the ultrasonic detection point when the chalk passes through the second semicircular gap due to the existence of the second semicircular gap on the calibration sheet;
taking the calibration instrument away, and respectively connecting the division points of each rebound detection area, wherein the intersection positions of the connecting lines form rebound detection points;
measuring ultrasonic data of each ultrasonic detection point by using an ultrasonic detector and transmitting the ultrasonic data to a computing instrument;
measuring the resilience value of each resilience detection point by using a concrete resilience meter and transmitting the resilience value to a calculating instrument;
and calculating an ultrasonic sound velocity value according to the acquired ultrasonic data by using a calculating instrument, and calculating the concrete strength of the target area according to the acquired ultrasonic sound velocity value and the rebound value.
Further, the method also comprises the steps that ultrasonic sensors are respectively arranged in the ultrasonic detection points to realize the acquisition of ultrasonic data and the transmission of the ultrasonic data to a computing instrument through a wireless network;
and a rebound sensor is arranged in each rebound detection point to realize the collection of rebound value data and send the data to a computing instrument through a wireless network.
Further, the method also includes: in the wireless sensor network, each acquisition node sends the data acquired by itself to the sink node, and the sink node sends the data acquired by itself and the data transmitted by other acquisition nodes to a computing instrument.
The invention has the beneficial effects that:
1) the utility model provides a calibration instrument to detection point setting in supersound resilience method, this calibration instrument is favorable to realizing arranging when resilience detection zone and ultrasonic wave check point, has reduced the manual operation cost simultaneously at the in-process that arranges to a great extent, has also reduced manual operation's quality requirement simultaneously, helps improving the degree of consistency set effect that the check point was arranged simultaneously, utilizes the concrete intensity monitoring of the detection system realization supersound resilience method of this application, easy operation.
2) According to the detection system provided by the application, the detection point arrangement method that the ultrasonic detection point and the rebound monitoring area form an angle of 45 degrees is further provided, and the method can be helpful for improving the effect and reliability of strength detection of the target concrete area.
3) Meanwhile, a data transmission technical scheme for acquiring the detection data of the target detection area by adopting the wireless sensor network is also provided, the detection data of the target detection area can be automatically acquired through the acquisition nodes and sent to a computing instrument for computing the concrete strength, and the intelligent level is high.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.
FIG. 1 is a block diagram of the framework of the system of the present invention;
FIG. 2 is a schematic diagram of a calibration apparatus according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view A-A of the calibration apparatus of FIG. 2 in accordance with the present invention;
fig. 4 is a view of the calibration apparatus shown in fig. 2 according to the present invention in the direction B.
Detailed Description
The invention is further described in connection with the following application scenarios.
Referring to fig. 1 to 4, there is shown a system for detecting concrete strength based on an ultrasonic rebound method, comprising: calibrating an instrument and a measuring instrument;
the calibration instrument comprises a square chassis, the square chassis is a square frame 1 formed by splicing four side materials, at least two first semicircular notches 2 are arranged on the outer edges of the four sides of the square frame 1, the at least two first semicircular notches 2 are distributed at equal intervals, and the first semicircular notches 2 on the two opposite sides of the square frame 1 are correspondingly arranged; the first semicircular gap 2 is used for calibrating a rebound detection area;
splicing upright posts 4 are respectively arranged on a group of opposite corners of the square frame 1, holding rods 3 are arranged on the splicing upright posts 4, the holding rods 3 cross the group of opposite corners of the square frame 1, and two ends of the holding rods 3 respectively extend out of the area of the square frame 1; the two ends of the holding rod 3 are respectively connected with the calibration sheets 6 through the connecting rods 5, and the calibration sheets 6 at the two ends of the holding rod 3 are parallel to each other and vertical to the horizontal projection of the long edge of the holding rod 3; the square frame 1 is positioned at the inner sides of the two calibration sheets 6, and the horizontal height of the calibration sheets 6 is consistent with that of the square frame 1; at least two second semicircular gaps 7 are formed in the outer side of each calibration sheet 6, the at least two second semicircular gaps 7 are distributed at equal intervals, and the second semicircular gaps 7 in the two calibration sheets 6 are correspondingly arranged; the second semicircular gap 7 is used for calibrating an ultrasonic detection area;
the measuring instrument comprises an ultrasonic measuring instrument, a concrete resiliometer and a calculating instrument, wherein the ultrasonic measuring instrument is used for measuring ultrasonic data of a target concrete area, and the concrete resiliometer is used for measuring a rebound value of the target concrete area; and the calculating instrument is used for calculating an ultrasonic sound velocity value according to the acquired ultrasonic data and calculating the concrete strength of the target area according to the acquired ultrasonic sound velocity value and the rebound value.
The system for detecting the strength of the concrete based on the ultrasonic rebound method comprises a calibration instrument and a measuring instrument, wherein the calibration instrument is used for calibrating a detection point in a concrete target measurement area; the measuring instrument is used for collecting corresponding ultrasonic detection data and rebound detection data in the set detection points and calculating the length of the concrete according to the obtained detection data. The invention can help to accurately and conveniently mark the detection point in the ultrasonic rebound method, effectively reduce the labor cost and improve the reliability.
In one embodiment, the ultrasonic testing apparatus comprises an ultrasonic sensor for acquiring ultrasonic data of a target concrete area and transmitting the acquired ultrasonic data to a computing instrument;
the concrete resiliometer includes the resilience sensor, and the resilience sensor is used for acquireing resilience value data to the resilience value that will gather sends the computational instrument.
In one embodiment, in the calibration instrument, the side length L1 of the square frame 1 is 200mm, the distance L2 between the first semicircular notches 2 on each side of the square frame 1 is 50mm, wherein each first semicircular notch 2 on each side is symmetrically distributed along the center of the side, and the diameter L8 of each first semicircular notch 2 is 10 mm; the length L3 of the holding rod 3 is 400mm, and the center of the holding rod 3 is superposed with the projection of the central point of the square frame 1 on the horizontal plane; the length L4 of concatenation pole setting 4 is 40mm, and the length L5 of calibration piece 6 is 200mm, and the interval L6 between the second semicircular notch 7 on the calibration piece 6 is 40mm, and the diameter L7 of second semicircular notch 7 is 10mm, and each second semicircular notch 7 on the calibration piece 6 is along the long limit central symmetry distribution of calibration piece 6.
In one embodiment, the material of each component in the calibration instrument is steel.
Aiming at the technical problems that at present, when a detection area is calibrated, square frames 1 of a rebound detection area are required to be drawn by a straight steel ruler one by one, then ultrasonic measurement points are respectively determined, technicians familiar with standard requirements need to confirm the sizes for multiple times in the drawing process, the operation is complex, the working efficiency is low, the requirements on the quality of personnel are high, the distribution of the measurement areas is difficult to keep uniform, and the appearance is poor, the system for detecting the concrete strength based on the ultrasonic rebound method is provided, wherein a calibration instrument contained in the system is beneficial to realizing the simultaneous arrangement of the rebound detection area and the ultrasonic measurement points, meanwhile, the manual operation cost is greatly reduced in the arrangement process, the quality requirement of manual operation is also reduced, the collection uniformity effect of the arrangement of the measurement points is also beneficial to improving, and the detection system of the application is utilized to realize the concrete strength monitoring of the ultrasonic rebound method, the operation is simple.
During operation, a calibration instrument is placed on the surface of a concrete structure, the holding rod 3 is held by one hand to keep stable, the other hand adopts chalk to draw a circle along the four edges of the square chassis, due to the existence of the semicircular gap, the position and the dividing point of a rebound method measuring area are formed when the chalk passes through the gap, and then the chalk is used for drawing lines along the two steel sheets of the frame to obtain the position of an ultrasonic measuring point; and then taking the product away from the surface of the concrete, and finally respectively connecting the division points of the rebound testing area by chalk to finally finish the arrangement of the ultrasonic-rebound comprehensive testing area. And then, the detection instrument is placed in a corresponding detection point for detection, detection data are obtained, and the concrete strength is calculated, so that the effect and the convenience degree of concrete strength detection are improved.
Simultaneously, this application still provides a system's method based on ultrasonic rebound method detects concrete strength based on the above-mentioned system that provides of this application, still provides a system's based on ultrasonic rebound method detects concrete strength, includes:
placing the calibration instrument on a target concrete area to be detected, and keeping the calibration instrument stable through the holding rod 3;
the method comprises the following steps that a circle of chalk is drawn on a target concrete area along four sides of a square frame 1 to form a rebound detection area, and due to the existence of a first semicircular gap 2 on a square first frame, the chalk forms a dividing point of the rebound detection area when passing through the first semicircular gap 2;
drawing a line on the target concrete area along the outer sides of the two calibration sheets 6 by using chalk, wherein due to the existence of the second semicircular gap 7 on the calibration sheets 6, the chalk forms an ultrasonic detection point when passing through the second semicircular gap 7;
taking the calibration instrument away, and respectively connecting the division points of each rebound detection area, wherein the intersection positions of the connecting lines form rebound detection points;
measuring ultrasonic data of each ultrasonic detection point by using an ultrasonic detector and transmitting the ultrasonic data to a computing instrument;
measuring the resilience value of each resilience detection point by using a concrete resilience meter and transmitting the resilience value to a calculating instrument;
and calculating an ultrasonic sound velocity value according to the acquired ultrasonic data by using a calculating instrument, and calculating the concrete strength of the target area according to the acquired ultrasonic sound velocity value and the rebound value.
When the calibration instrument provided by the application is used for calibrating the detection point, the calibrated ultrasonic detection point forms an angle of 45 degrees with the rebound detection area, and the rebound detection area (rebound detection point) is arranged on the inner side of the ultrasonic detection point; by adopting the arrangement mode of the detection points, the accuracy and the reliability of detecting the target area by adopting an ultrasonic-rebound method can be effectively improved, and the mutual influence among the detection points is avoided.
In one embodiment, the method further comprises respectively arranging an ultrasonic sensor in each ultrasonic detection point to acquire ultrasonic data and transmit the ultrasonic data to the computing instrument through a wireless network;
and a rebound sensor is arranged in each rebound detection point to collect rebound value data and send the data to a computing instrument through a wireless network.
In one embodiment, the method further comprises: each ultrasonic sensor and each rebound sensor form a wireless sensor network, each ultrasonic sensor and each rebound sensor are respectively represented as a collection node in the sensor network, each collection node comprises a sink node, in the sensor network, each collection node sends the data collected by itself to the sink node, and the sink node sends the data collected by itself and the data transmitted by other collection nodes to a computing instrument.
Meanwhile, a data transmission technical scheme for acquiring the detection data of the target detection area by adopting the sensor network is also provided, the detection data of the target detection area can be automatically acquired by the acquisition nodes and sent to a computing instrument for computing the concrete strength, and the intelligent level is high.
In one embodiment, the method further comprises: after each ultrasonic sensor and each resilience sensor are arranged at the corresponding ultrasonic detection point and resilience detection point, controlling the acquisition nodes in the wireless sensor network to select the sink nodes;
wherein the electing the sink node comprises:
after each acquisition node is arranged at the corresponding detection point, the acquisition node broadcasts own node state information to the neighborhood node of the acquisition node; receiving node state information of the neighborhood nodes sent by the neighborhood nodes; the node state information comprises residual energy information of the acquisition node and information sending timestamp information;
the collecting node calculates the self aggregation scoring value according to the received node state information of the neighborhood node, wherein the adopted aggregation scoring value calculation function is as follows:
wherein P represents the aggregate score value of the collection node, E0Representing the remaining energy percentage of the acquisition node,
the residual energy percentage mean value of the neighborhood nodes representing the sink node is obtained by counting according to the received state information of the neighborhood nodes;
representing an average value of communication delay between the collection node and a neighborhood node thereof, wherein the communication delay is calculated by a time difference between the sending time of the node state information of the neighborhood node and the receiving time of the collection node;
representing a second maximum in communication delay between the collection node and its neighbor nodes; t is tyIndicating a set communication delay standard value; n is a radical of0Representing the number of state information of the adjacent nodes received by the acquisition node; a. the0Representing a node type parameter, wherein A is when the acquisition node is an ultrasonic sensor0A, when the collection node is a rebound sensor, a0B; a. b is a set numerical value, wherein a is less than or equal to b; omegaE、ωt、ωN、ωARespectively expressing specific gravity adjusting factors of energy, time delay, quantity and type parameters, and normalizing and balancing the specific gravity of each parameter;
the collection nodes broadcast the self aggregated value information to other collection nodes in the wireless sensor network, and the collection node with the largest aggregated value is selected as the aggregation node.
In the above embodiment, a technical scheme is provided for adaptively selecting aggregation nodes by each acquisition node of a wireless sensor network, where the acquisition nodes can estimate aggregation scores indicating whether the acquisition node itself is superior as an aggregation node according to state information of other acquisition nodes received by the acquisition nodes by mutually transmitting state information between the acquisition nodes, and an optimized aggregation score calculation function is provided, where the function can accurately estimate the performance of the acquisition node as an aggregation node according to the energy, transmission performance, location, and type of the node, and is helpful for selecting the acquisition node with the highest aggregation score among the nodes as the aggregation node, and the aggregation node receives detection data acquired by other acquisition nodes and uniformly transmits the detection data to a calculation instrument. The method is beneficial to improving the transmission performance of the acquisition node and reducing the transmission energy consumption.
In one embodiment, the method further comprises: when the collection node receives the aggregated value scoring information of other collection nodes broadcasted by other collection nodes, the collection node compares the aggregated value scoring of the collection node with the aggregated value scoring of other collection nodes, and when the aggregated value scoring of the collection node is smaller than the following judgment conditions, the collection node sends out alarm information;
wherein the determination conditions are:
P0＜0.7×(0.6×Pδ-m+0.4×Pδ-s2)
in the formula, P0Representing the collection node's own aggregate score value, Pδ-mRepresenting the average value of the aggregation scores of other acquisition nodes; pδ-s2Representing a second minimum value of the aggregate score values of the other collection nodes.
Aiming at the fact that the acquisition nodes possibly have abnormal conditions, the technical scheme of transversely comparing the conditions of the acquisition nodes is added in the process of electing the aggregation nodes in the embodiment, the aggregation scoring values are used as evaluation parameters, the acquisition nodes with abnormal performance (such as abnormal data receiving and transmitting or serious energy shortage) can be accurately found, the abnormal nodes can be timely replaced and processed by a calculator in the measurement process, and the performance of detecting the regional strength of the target concrete is improved.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be analyzed by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. A system for detecting concrete strength based on an ultrasonic rebound method is characterized by comprising: calibrating an instrument and a measuring instrument;
the calibration instrument comprises a square chassis, the square chassis is a square frame formed by splicing four side materials, at least two first semicircular notches are arranged on the outer edges of the four sides of the square frame, and the at least two first semicircular notches are distributed at equal intervals; wherein the first semicircular gaps on two opposite sides of the square frame are correspondingly arranged; the first semicircular gap is used for calibrating a rebound detection area;
splicing upright posts are respectively arranged on one group of opposite corners of the square frame, holding rods are arranged on the splicing upright posts, the holding rods cross the pair of opposite corners of the square frame, and two ends of the holding rods respectively extend out of the square frame; the two ends of the holding rod are respectively connected with the calibration sheets through the connecting rods, and the calibration sheets at the two ends of the holding rod are parallel to each other and are vertical to the projection of the holding rod on the horizontal plane; the square frame is positioned at the inner sides of the two calibration sheets, and the horizontal height of the calibration sheets is consistent with that of the square frame; at least two second semicircular gaps are formed in the outer side of each calibration sheet, the at least two second semicircular gaps are distributed at equal intervals, and the second semicircular gaps in the two calibration sheets are correspondingly arranged; the second semicircular gap is used for calibrating an ultrasonic detection area;
the measuring instrument comprises an ultrasonic measuring instrument, a concrete resiliometer and a calculating instrument, wherein the ultrasonic measuring instrument is used for measuring ultrasonic data of a target concrete area, and the concrete resiliometer is used for measuring a rebound value of the target concrete area; and the calculating instrument is used for calculating an ultrasonic sound velocity value according to the acquired ultrasonic data and calculating the concrete strength of the target area according to the acquired ultrasonic sound velocity value and the rebound value.
2. The system for detecting the strength of the concrete based on the ultrasonic rebound method as recited in claim 1, wherein the ultrasonic detector comprises an ultrasonic sensor, the ultrasonic sensor is used for acquiring ultrasonic data of a target concrete area and sending the acquired ultrasonic data to the computing instrument;
the concrete resiliometer comprises a rebound sensor, the rebound sensor is used for acquiring rebound value data and sending the acquired rebound value to the calculating instrument.
3. The system for detecting the strength of the concrete based on the ultrasonic rebound method as claimed in claim 2, wherein in the calibration instrument, the side length L1 of the square frame is 200mm, the distance L2 between the first semicircular notches on each side of the square frame is 50mm, wherein the first semicircular notches on each side are symmetrically distributed along the center of the side, the diameter L8 of the first semicircular notch is 10mm, the length L3 of the holding rod is 400mm, and the center of the holding rod coincides with the projection of the center point of the square frame on the horizontal plane; the length L4 of concatenation riser is 40mm, the length L5 of calibration piece is 200mm, on the calibration piece interval L6 between the semi-circular breach of second is 40mm, the diameter L7 of the semi-circular breach of second is 10mm, and the central symmetry who marks the long limit of piece is followed to each semi-circular breach of second on the calibration piece distributes.
4. The system for detecting the strength of the concrete based on the ultrasonic rebound method as claimed in claim 3, wherein the calibration instrument is made of steel. .
5. A method of a system for detecting concrete strength based on an ultrasonic rebound method, which is characterized in that the system for detecting concrete strength based on the ultrasonic rebound method is used as claimed in any one of claims 2 to 4, and the method comprises the following steps:
placing the calibration instrument on the target concrete area to be detected, and keeping the calibration instrument stable through the holding rod;
drawing a circle of calibrated springback detection area on the target concrete area along four sides of the square frame by using chalk, wherein due to the existence of the first semicircular gap on the square frame, the chalk forms a dividing point of the springback detection area when passing through the first semicircular gap;
drawing lines on the target concrete area along the outer sides of the two calibration sheets respectively by using chalk, and calibrating the ultrasonic detection point when the chalk passes through the second semicircular notch due to the existence of the second semicircular notch on the calibration sheet;
taking the calibration instrument away, and respectively connecting the division points of each rebound detection area, wherein the intersection positions of the connecting lines form rebound detection points;
measuring ultrasonic data of each ultrasonic detection point by using the ultrasonic detector and transmitting the ultrasonic data to the computing instrument;
measuring the rebound value of each rebound detection point by using the concrete rebound instrument and transmitting the rebound value to the calculating instrument;
and calculating an ultrasonic sound velocity value according to the acquired ultrasonic data by using a calculating instrument, and calculating the concrete strength of the target area according to the acquired ultrasonic sound velocity value and the rebound value.
6. The method of the system for detecting the strength of the concrete based on the ultrasonic rebound method according to claim 5, further comprising: the ultrasonic sensors are respectively arranged in the ultrasonic detection points to realize the acquisition of ultrasonic data and the transmission of the ultrasonic data to the computing instrument through a wireless network;
and the rebound sensors are arranged in the rebound detection points to acquire rebound value data and send the data to the computing instrument through a wireless network.
7. The method of the system for detecting concrete strength based on the ultrasonic rebound method as set forth in claim 6, wherein the method further comprises: each ultrasonic sensor and each rebound sensor form a wireless sensor network, each ultrasonic sensor and each rebound sensor are respectively represented as a collection node in the wireless sensor network, wherein the collection node comprises a sink node, in the wireless sensor network, each collection node sends the data collected by itself to the sink node, and the sink node sends the data collected by itself and the data transmitted by other collection nodes to the computing instrument.
8. The method of claim 7, wherein the method further comprises: after each ultrasonic sensor and each rebound sensor are arranged at the corresponding ultrasonic detection point and the corresponding rebound detection point, controlling a collection node in a wireless sensor network to select a sink node;
wherein the electing the sink node comprises:
after each acquisition node is arranged at the corresponding detection point, the acquisition node broadcasts own node state information to the neighborhood node of the acquisition node; receiving node state information of the neighborhood nodes sent by the neighborhood nodes; the node state information comprises residual energy information of the acquisition node and information sending timestamp information;
the collecting node calculates the self aggregation scoring value according to the received node state information of the neighborhood node, wherein the adopted aggregation scoring value calculation function is as follows:
wherein P represents the aggregate score value of the collection node, E0Representing the remaining energy percentage of the acquisition node,
the residual energy percentage mean value of the neighborhood nodes representing the sink node is obtained by counting according to the received state information of the neighborhood nodes;
representing an average value of communication delay between the collection node and a neighborhood node thereof, wherein the communication delay is calculated by a time difference between the sending time of the node state information of the neighborhood node and the receiving time of the collection node;
representing a second maximum in communication delay between the collection node and its neighbor nodes; t is tyIndicating a set communication delay standard value; n is a radical of0Representing the number of state information of the adjacent nodes received by the acquisition node; a. the0Representing a node type parameter, wherein A is when the acquisition node is an ultrasonic sensor0A, when the collection node is a rebound sensor, a0B; a. b is a set numerical value, wherein a is less than or equal to b; omegaE、ωt、ωN、ωARespectively expressing specific gravity adjusting factors of energy, time delay, quantity and type parameters, and normalizing and balancing the specific gravity of each parameter;
the collection nodes broadcast the self aggregated value information to other collection nodes in the wireless sensor network, and the collection node with the largest aggregated value is selected as the aggregation node.
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