阅读说明：本技术 基于相控矩阵超声的雪车雪橇赛道密实度检测方法 (Method for detecting compactness of ski track of snow vehicle based on phased matrix ultrasound ) 是由 马冰洋 魏金龙 圣长波 原睿 刘晓 杨芸 阳刚 于 2020-07-02 设计创作，主要内容包括：本发明提供一种基于相控矩阵超声的雪车雪橇赛道密实度检测方法,包括步骤：S1：对待检区域赛道的表面采用矩阵的排布方式布置多个相控单晶探头并紧贴待检区域赛道的表面；S2：对相控单晶探头进行相位控制,使各个相控单晶探头产生矩阵合成声束对待检区域赛道进行超声扫描；S3：接收矩阵合成声束在待检区域赛道内部反射回的回波；S4:根据接收到的回波形成检测图像,根据检测图像判断待检区域赛道的喷射是否密实；如判断结果为有缺陷,根据检测图像判断缺陷的深度及大小。本发明的一种基于相控矩阵超声的雪车雪橇赛道密实度检测方法,可对雪车雪橇赛道密实度实施检测,克服传统检测手段的缺陷,确保装赛道内部密实,避免安全隐患。(The invention provides a method for detecting the compactness of a ski track of a snowmobile based on phased matrix ultrasound, which comprises the following steps: s1: arranging a plurality of phase-controlled single crystal probes on the surface of the track of the area to be detected in a matrix arrangement mode and enabling the phase-controlled single crystal probes to be tightly attached to the surface of the track of the area to be detected; s2: carrying out phase control on the phase-controlled single crystal probes to enable each phase-controlled single crystal probe to generate a matrix synthesis sound beam to carry out ultrasonic scanning on the racetrack of the region to be detected; s3: receiving echoes of the matrix synthesis sound beams reflected back in the track of the area to be detected; s4, forming a detection image according to the received echo, and judging whether the jet of the track in the area to be detected is compact or not according to the detection image; if the judgment result is that the defect exists, the depth and the size of the defect are judged according to the detection image. The method for detecting the compactness of the ski track of the snow vehicle based on the phased matrix ultrasound can be used for detecting the compactness of the ski track of the snow vehicle, overcomes the defects of the traditional detection means, ensures the compactness of the inner part of the ski track and avoids potential safety hazards.)

1. A method for detecting compactness of a ski track of a snow vehicle based on phased matrix ultrasound comprises the following steps:

s1: arranging a plurality of phase-controlled single crystal probes on the surface of a track of a region to be detected in a matrix arrangement mode, and enabling the phase-controlled single crystal probes to be tightly attached to the surface of the track of the region to be detected;

s2: carrying out phase control on the phase-controlled single crystal probes, combining and superposing the phase-controlled single crystal probes according to a preset program to generate a matrix synthesis sound beam to carry out ultrasonic scanning on the track of the area to be detected;

s3: receiving echo waves reflected by the matrix synthesis sound beams in the track of the area to be detected according to the frequency of the matrix synthesis sound beams generated by the phase-controlled single crystal probe;

s4, forming a detection image according to the received echo, and judging whether the track in the area to be detected is compact or not according to the detection image; and if the judgment result is that the defect exists, judging the depth and the size of the defect according to the detection image.

2. The phased matrix ultrasound-based snowmobile ski track compactness testing method according to claim 1, characterized in that in the step S1, the phased single crystal probes are arranged in a two-dimensional matrix.

3. The method for detecting the compactness of the ski track of the snowmobile based on the phased matrix ultrasound as claimed in claim 2, wherein in the step S2, the phased delay rule is adopted, the sound beams of the phased single crystal probes in the control matrix are combined and superposed, and the generated matrix synthesis sound beam is used for scanning the inside of the track of the area to be detected.

4. The method for detecting the consistency of the snowmobile ski track according to claim 3, wherein in the step S4, if at least one red area exists in the detection image, the red area is judged as the defect.

5. The method for detecting the consistency of the snowmobile ski-track according to the phased matrix ultrasound-based claim 4, wherein in the step S4, the depth and the size of the defect are obtained according to the coordinate axes of the detection image.

Technical Field

The invention relates to the field of snow car ski-track compactness detection, in particular to a method for detecting the compactness of a snow car ski-track based on phased matrix ultrasound.

Background

The design difficulty of the sleigh track of the snow car is high, and the construction difficulty is large and complex. The spraying construction is adopted, the track is of a thin-layer main structure, a large number of steel bars and refrigerating pipes are densely distributed in the track, the working condition is very complex, and the phenomenon of incompact internal spraying is easily caused in the spraying process.

The situation that the ice making on the surface of the finished track cannot meet the standard due to the fact that the track is not compact in spraying can be caused, the snow sled item is one of the items with the highest speed in the sports meeting, any slight defect can cause very serious consequences, and therefore the requirement for controlling the compactness of the track is extremely strict. Therefore, the compactness of the sprayed racetrack is detected.

At present, core drilling sampling or ultrasonic, ray and other detection means are mostly adopted for detecting the compactness of concrete. However, for the track, the inner refrigeration pipe is broken by the core drilling and sampling due to the refrigeration pipe, and only the sampling place can be detected, so that the track has a great limitation. Ultrasonic testing is easily restricted by a testing interface, and the inside of the track is provided with a steel bar net piece, a stirrup, a refrigeration pipe and the like, so that the structure is complex, the ultrasonic effect is seriously influenced, and the field requires two-side testing, thereby wasting time and energy. The ray detection has the advantages that the detection result is more intuitive, but the radiation safety protection requirement is met on the site, the detection cost is higher, and the comprehensive development is difficult.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the method for detecting the compactness of the ski track of the snow vehicle based on the phased matrix ultrasound, which can detect the compactness of the ski track of the snow vehicle, overcome the defects of the traditional detection means, ensure the compactness of the inner part of the track and avoid potential safety hazards.

In order to achieve the aim, the invention provides a method for detecting the compactness of a ski track of a snowmobile based on phased matrix ultrasound, which comprises the following steps of:

s1: arranging a plurality of phase-controlled single crystal probes on the surface of a track of a region to be detected in a matrix arrangement mode, and enabling the phase-controlled single crystal probes to be tightly attached to the surface of the track of the region to be detected;

s2: carrying out phase control on the phase-controlled single crystal probes, combining and superposing the phase-controlled single crystal probes according to a preset program to generate a matrix synthesis sound beam to carry out ultrasonic scanning on the track of the area to be detected;

s3: receiving echo waves reflected by the matrix synthesis sound beams in the track of the area to be detected according to the frequency of the matrix synthesis sound beams generated by the phase-controlled single crystal probe;

s4, forming a detection image according to the received echo, and judging whether the track in the area to be detected is compact or not according to the detection image; and if the judgment result is that the defect exists, judging the depth and the size of the defect according to the detection image.

Preferably, in the step S1, the phased single crystal probes are arranged in a two-dimensional matrix.

Preferably, in the step S2, the phased delay law is adopted, the sound beams of the phased single crystal probes in the matrix are controlled to be combined and superposed, and the generated matrix synthesized sound beam is used to scan the inside of the racetrack in the area to be detected.

Preferably, in the step S4, if at least one red region exists in the detection image, the red region is determined as the defect.

Preferably, in the step S4, the depth and the size of the defect are obtained according to the coordinate axes of the detection image.

Due to the adoption of the technical scheme, the invention has the following beneficial effects:

the invention adopts a detection scheme of a matrix ultrasonic method. The ultrasonic detector of phase control matrix is pressed close to the ultrasonic transmitter who receives the face of examining according to the matrix arrangement, sends the vibration wave through a plurality of vibration generators, can reflect at the inside hollowing position of concrete, and a plurality of receivers of rethread are received to synthesize size and the degree of depth of confirming the hollowing position. The method is nondestructive detection, avoids damage of core drilling sampling to the track, only needs to operate on one side of the track and does not need to install sensors on two sides, operation is convenient, and the influence of complex reinforcing mesh, refrigeration pipes, reinforcing steel bars and the like in the track on traditional ultrasonic detection is improved due to comprehensive ultrasonic positioning of a plurality of point positions. Compared with the ray method, the method is more convenient, faster and safer, and can also accurately position the defects at the rear parts of the refrigeration pipe and the reinforcing steel bar.

Drawings

Fig. 1 is a flowchart of a method for detecting the compactness of a ski track of a snowmobile based on phased matrix ultrasound according to an embodiment of the present invention.

Detailed Description

The following description of the preferred embodiment of the present invention, in accordance with the accompanying drawings of which 1 is presented to enable a better understanding of the invention as to its functions and features.

Referring to fig. 1, a method for detecting compactness of a ski track of a snowmobile based on phased matrix ultrasound according to an embodiment of the present invention includes:

s1: arranging a plurality of phase-controlled single crystal probes on the surface of a track of a region to be detected in a matrix arrangement mode, and enabling the phase-controlled single crystal probes to be tightly attached to the surface of the track of the region to be detected;

s2: carrying out phase control on the phase-controlled single crystal probes, combining and superposing the phase-controlled single crystal probes according to a preset program to generate a matrix synthesis sound beam for carrying out ultrasonic scanning on the racetrack in the region to be detected;

s3: receiving echo waves reflected by the matrix synthesis sound beams in the track of the area to be detected according to the frequency of the matrix synthesis sound beams generated by the phase control single crystal probe;

s4, forming a detection image according to the received echo, and judging whether the jet of the track in the area to be detected is compact or not according to the detection image; if the judgment result is that the defect exists, the depth and the size of the defect are judged according to the detection image.

In step S1, the phased single crystal probes are arranged in a two-dimensional matrix.

And step S2, combining and superposing the sound beams of each phase-controlled single crystal probe in the control matrix by adopting a phase-controlled delay rule, and scanning the inside of the track in the area to be detected by utilizing the generated matrix synthesis sound beams.

In step S4, if at least one red region exists in the detected image, the red region is determined to be a defect.

In step S4, the depth and size of the defect are obtained from the coordinate axes of the inspection image. The method for detecting the compactness of the sled track of the snowmobile based on the phased matrix ultrasound has the advantages of low detection cost, convenience in operation, intuitive and reliable result judgment, no limitation of the structural shape of the track and the site conditions of a construction site, reliable detection of the concrete spraying compactness of the track, timely judgment of the internal defects of the track, overcoming the defects of the traditional detection means, ensuring that the track can reach the standard and avoiding potential safety hazards.

While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.