System and method for monitoring integrity of steel rails of cloud platforms on basis of guide wave technologies
A cloud platform and monitoring system technology, which is applied in the direction of railway vehicle shape measuring devices, railway car body parts, railway auxiliary equipment, etc., can solve complex, difficult to meet timeliness, cloud online reliability, and strict requirements across a wide range of regions , manual detection and monitoring technology is difficult to meet the detection and monitoring needs and other issues
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Embodiment 1
[0097] Such as Figure 3 to Figure 7 , the cloud platform performs monitoring, processing and analysis based on the guided wave data obtained from the monitoring front-end monitoring.
[0098] Here, a large amount of guided wave monitoring data, that is, guided wave big data, is further mined and analyzed through cross-processing. Here, two sets of rail waist monitoring data Y with an interval of E are taken. i and Y j Carry out monitoring analysis, wherein i=22, j=22 monitoring data, carry out standardization process according to step S1.3, after processing according to step S1.4.1 in claim 5 to step S1.4.3, the coefficient matrix W* that obtains The dimension is 44×23, for the guided wave signal of 44 dimensions, after step S1.4.4 process in claim 5, a total of 23 characteristic sound source information are obtained, after programming in MATLAB, each of the characteristic signal Group coefficient data are visualized, a total of 23 groups.
[0099] In order to get θ i =|1...
Embodiment 2
[0106] Figure 11 Shown is the actual rail waist monitoring signal, the signal-to-noise ratio is low, and it is difficult to distinguish damage.
[0107] The present invention can also monitor, evaluate and locate multiple damages. Here, for example, the actual situation of rails containing 4 damages and growing into 5 damages is compared based on the detection and analysis of the present invention and the traditional reference library method, that is, the damage growth The process was monitored by cross-treatment analysis. In actual monitoring, the guided wave acquisition mode is set to the transducer at one end of the rail to stimulate the emission, and the transducer at the other end receives the rail guided wave signal to obtain the collected data, which is transmitted from the front-end monitoring module to the cloud monitoring server.
[0108] The specific implementation of the present invention adopts the cross processing method, and four damaged guided wave signals an...
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