CN102923164B - High-speed rail health monitoring system based on ultrasonic guide wave and wireless network - Google Patents

Abstract

The invention discloses a high-speed rail track health monitoring system based on ultrasonic guided waves and wireless network, wherein: the vehicle-mounted central processing and decision-making module sends detection instructions to the ultrasonic guided wave excitation module through the wireless network transmission module, and the ultrasonic guided wave excitation module generates excitation waves , generate ultrasonic guided waves in the track and transmit them to the ultrasonic guided wave signal receiving and storage module, the receiving and storage module digitizes the ultrasonic guided wave signal, stores it and transmits it to the on-board center processing and decision-making module, and filters the ultrasonic guided wave signal Summing envelope processing, extracting the wave packet characteristics of the ultrasonic guided wave, judging the properties of the wave packet in the waveform signal and the actual wave velocity, comparing with the non-destructive information in the database, extracting the damage characteristics in the waveform signal, and judging the damage characteristics of the high-speed rail track The presence, extent, and location of damage are assessed. The invention improves the detection speed and the detection ability of the slight damage to the track, and reduces the time occupied by the high-speed rail line.

Description

High-speed rail track health monitoring system based on ultrasonic guided wave and wireless network

technical field

The invention relates to a system in the technical field of railway safety monitoring and protection, in particular to a high-speed rail track health monitoring system based on ultrasonic guided waves and wireless networks.

Background technique

The rapid development of my country's high-speed rail technology has greatly facilitated the travel of passengers, promoted economic development, and eased the pressure of passenger flow in my country. The increasing train speed and passenger flow have posed new challenges to the health status monitoring and maintenance of high-speed rail tracks. The high-speed railway track is one of the large key structures in the high-speed railway project. The mechanical properties of the track will have a direct impact on the running quality of the train. Damages such as corrosion and fatigue due to manufacturing, installation, wear, fatigue, impact, damage, etc. will destroy the integrity of the track, and even have catastrophic consequences. In recent years, high-speed rail accidents at home and abroad have occurred frequently, and safety monitoring has become a major issue in high-speed rail construction. During the service process of high-speed railway tracks, timely detection of internal or surface damage (such as fatigue cracks, etc.) of the track can greatly improve and ensure the safety of the track and high-speed trains during operation. Therefore, the study and application of new high-speed railway track damage detection technology has important social significance and economic value for my country, where high-speed railways are developing rapidly.

At present, my country's rail flaw detection mainly relies on rail flaw detection vehicles with a relatively slow detection speed (less than 100 km/h) and some manual inspections. Rail flaw detection vehicles at home and abroad all use ultrasonic flaw detection technology. For the detection of high-speed rail (250-350 km/h) tracks, this flaw detection vehicle has the following two disadvantages: 1) It cannot reliably detect small-sized cracks on the surface of the rail (less than 4mm), especially early fatigue cracks cannot be detected; 2) The occupation of the high-speed rail track by the low-speed flaw detection vehicle seriously affects the operating efficiency of the train. Therefore, this detection method has been unable to meet the detection requirements of high-speed rail tracks.

The damage detection technology based on ultrasonic guided wave is a real-time and online non-destructive detection technology. Ultrasonic guided wave can propagate in the detected structure with low attenuation, long distance and is sensitive to the micro damage and initial damage of the structure. Due to the characteristics of ultrasonic propagation in the track, it has the advantages of high sensitivity, fast detection speed, and accurate positioning for detecting track fatigue cracks and other internal defects. In addition, the damage detection technology based on guided waves can be monitored in real time and online The health status of the high-speed rail track and give real-time effective feedback, effectively reducing the maintenance cost of the track and improving the reliability of the high-speed rail. Therefore, the damage detection technology based on guided waves has a good application prospect in the structural health monitoring of high-speed rail tracks. On the other hand, seamless tracks are used in high-speed rail, which also provides the possibility for the application of guided wave-based damage detection technology in high-speed rail.

Contents of the invention

Aiming at the deficiencies in the existing detection technology, the present invention proposes a high-speed rail track health monitoring system based on ultrasonic guided waves and wireless networks. The safety of driving and the ability to detect small damage to high-speed rail tracks.

The present invention is realized through the following technical solutions, and the present invention includes: a wireless network transmission module, an ultrasonic guided wave excitation module, an ultrasonic guided wave signal receiving and storing module, and a vehicle-mounted center processing and decision-making module. Among them: the wireless network transmission module is responsible for sending the detection instructions issued by the vehicle center processing and decision-making module to the ultrasonic guided wave excitation module, and feeding back the guided wave signal received by the ultrasonic guided wave signal receiving and storage module to the vehicle center for processing and decision-making module; the ultrasonic guided wave excitation module excites the ultrasonic guided wave in the high-speed rail track after receiving the detection instruction, and the ultrasonic guided wave transmits the guided wave signal to the ultrasonic guided wave signal receiving and storage module through the waveguide medium (high-speed rail track); The guided wave signal receiving and storage module receives the ultrasonic guided wave in the waveguide medium, digitizes the analog signal of the ultrasonic guided wave, stores the digitized ultrasonic guided wave, and then transmits the ultrasonic guided wave signal to the vehicle center for processing through the wireless network transmission module and decision-making module; on the one hand, the vehicle center processing and decision-making module sends detection instructions to the ultrasonic guided wave excitation module through the wireless transmission module; on the other hand, it filters and Hilbert transforms the ultrasonic guided wave signal fed back by the ultrasonic guided wave signal receiving and storage module, Extract the wave packet characteristics of the ultrasonic guided wave, judge the properties of the wave packet, and compare it with the waveform without damage in the internal database of the on-board central processing and decision-making module to judge whether there is damage and the severity of the damage in the high-speed rail track. And display the track damage report on the train terminal, prompting the high-speed train driver to take corresponding driving measures.

Further, the ultrasonic guided wave excitation module includes a voice command receiver, a digital/analog converter, a signal amplifier and a piezoelectric wafer exciter, wherein: the voice command receiver receives the information transmitted by the wireless network transmission module. The on-vehicle center processes the language instructions issued by the decision-making module, and transmits the received voice instructions to the digital/analog converter; the digital excitation wave signal with a fixed frequency is pre-stored in the digital/analog converter, and when the digital/analog converter After receiving the voice command from the voice command receiver, it performs digital/analog conversion on the digital excitation wave signal stored inside it, and transmits the analog excitation wave signal to the signal amplifier; the signal amplifier is responsible for transmitting the digital/analog converter The analog excitation wave signal is amplified to meet the requirements of the voltage amplitude of the excitation signal, and the amplified excitation wave analog voltage is applied to the piezoelectric wafer actuator; the piezoelectric wafer actuator is pasted on the non-working surface of the high-speed rail track, It is responsible for exciting the ultrasonic guided wave in the high-speed rail track.

Furthermore, the digital excitation wave signal is a window function and excitation waveform optimized and selected according to influencing factors such as the structure of the track, material properties, and dispersion characteristics of the guided wave, and its frequency is 10 kHz to 200 kHz.

Further, the ultrasonic guided wave signal receiving and storage module includes a piezoelectric chip receiver, a single-channel data collector and a data buffer, wherein: the piezoelectric chip receiver is pasted on the non-working surface of the high-speed rail track, and the piezoelectric chip receiver is The chip exciter has a certain distance, which is within the attenuation range of the ultrasonic guided wave signal, and is responsible for receiving the ultrasonic guided wave transmitted from the high-speed rail track, and transmitting the ultrasonic guided wave to the single-channel data collector; the single-channel data collector is responsible for Digitize the ultrasonic guided wave signal transmitted by the piezoelectric chip receiver, and transmit the digitized ultrasonic guided wave to the data buffer; the data buffer is responsible for storing the ultrasonic guided wave digital signal transmitted by the single-channel data collector, and transmit it using the wireless network The module feeds the ultrasonic guided wave signal back to the on-board center processing and decision-making module.

Further, the on-vehicle center processing and decision-making module includes a detection instruction generation module, a digital signal processing module and a high-speed rail track damage degree decision-making module, wherein: the detection instruction generation module is used to generate instruction information for corresponding detection sections, and the instruction information includes information related to Detect the number of the ultrasonic guided wave excitation module and ultrasonic guided wave signal receiving and storage module corresponding to the road section, the waveform information of the excited ultrasonic guided wave and the sampling information of data acquisition, etc.; the digital signal processing module receives the ultrasonic guided wave from the data buffer signal, using the filtering and Hilbert envelope algorithm stored in the digital signal processing module, the ultrasonic guided wave signal is filtered and enveloped, the wave packet characteristics of the ultrasonic guided wave are extracted, and the properties of the wave packet in the waveform signal are judged; Obtain the arrival time of the first wave packet in the received ultrasonic guided wave signal, and divide the actual distance between the ultrasonic guided wave excitation module and the ultrasonic guided wave signal receiving and storage module by the arrival time to obtain the guided wave in the high-speed rail track The actual propagation speed; compared with the waveform information stored in the internal database of the on-board central processing and decision-making module under the condition of no damage, the damage characteristics in the received waveform signal are extracted, and the high-speed rail track damage degree decision-making module is used to judge the damage of the high-speed rail track. Whether there is damage and the severity of the damage, the actual velocity of the guided wave mode is multiplied by the arrival time of the damaged wave packet, and the location of the damage is evaluated, and the formed track damage report is displayed on the train terminal monitor, prompting the high-speed train The driver takes corresponding driving measures and stores the report information in the database of the on-board central processing and decision-making module to provide theoretical support for subsequent track maintenance and early warning work.

Further, in the detection instruction generating module, the numbers of the ultrasonic guided wave excitation module and the ultrasonic guided wave signal receiving and storing module receive and store the guided wave exciting module and ultrasonic guided wave signal in the route through the set coding method The modules are numbered and stored in the database of the on-vehicle center processing and decision-making module. This information is in one-to-one correspondence with the road section information in the line, and the specific positions of the guided wave excitation module and the ultrasonic guided wave signal receiving and storage module can be located.

Compared with prior art, the beneficial effect of the present invention is:

1) Since the ultrasonic guided wave can propagate in the track structure with low attenuation and long distance, it can quickly detect the safety of the track structure; the propagation speed of the ultrasonic guided wave monitoring mode is generally 5000m/s, which is much higher at the speed of high-speed rail;

2) Since the ultrasonic guided wave is sensitive to small damage, it can detect the small damage in the high-speed rail track structure;

3) The present invention adopts the patch type piezoelectric chip sensor as the piezoelectric chip exciter and the piezoelectric chip receiver of the ultrasonic guided wave respectively. Therefore, it is only necessary to paste the piezoelectric chip exciter and the piezoelectric chip receiver on the high-speed rail The hardware installation can be realized on the corresponding non-working surface, without structural changes to the high-speed rail tracks in use;

4) In the present invention, the excitation wave of the guided wave signal can be sent at any time as needed, so the damage of the track on the road ahead can be detected in real time, so that the driver of the high-speed train can understand the road conditions ahead in real time, and feedback the damage information to the damaged road section. Timely maintenance;

5) The high-speed rail track damage monitoring and identification system based on ultrasonic guided wave and wireless network of the present invention has the function of real-time detection of high-speed rail damage, so it can detect damage such as cracks hidden inside the high-speed rail track at the initial stage of damage to the high-speed rail track, and avoid high-speed rail damage. The track suddenly breaks due to the accumulation of damage, thereby improving the safety of high-speed rail driving;

6) The present invention adopts mature wireless network technology, which facilitates the assembly of sensors and information transmission networks.

Description of drawings

Fig. 1 is the schematic diagram of the system of the present invention;

Fig. 2 is a schematic diagram of the implementation process of the system of the present invention;

Fig. 3 is a system implementation flowchart of the present invention;

Fig. 4 is the structural block diagram of the ultrasonic guided wave excitation module of the present invention;

Fig. 5 is the structural block diagram of ultrasonic guided wave signal receiving and storage module of the present invention;

Fig. 6 is the structural block diagram of vehicle-mounted center processing and decision-making module of the present invention;

Fig. 7 is a comparison of piezoelectric wafer sensor signals with and without damage in the track of the present invention.

Detailed ways

The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the invention, and detailed implementation methods and processes are provided, but the protection scope of the present invention is not limited to the following embodiments.

As shown in Figures 1, 2, and 3, this embodiment includes: a wireless network transmission module, an ultrasonic guided wave excitation module, an ultrasonic guided wave signal receiving and storage module, and a vehicle center processing and decision-making module, wherein: the wireless network transmission module is responsible for sending The ultrasonic guided wave excitation module transmits the detection instructions issued by the on-board central processing and decision-making module; the ultrasonic guided wave excitation module generates an excitation wave after receiving the voice instruction from the on-board central processing and decision-making module, and sends the excitation wave to the high-speed rail track. The elastic wave is generated in the high-speed rail track and the ultrasonic guided wave is transmitted to the ultrasonic guided wave signal receiving and storage module; the ultrasonic guided wave signal receiving and storage module receives the ultrasonic guided wave signal generated in the high-speed rail track, and the ultrasonic guided wave Store after digitization, and then use the wireless network transmission module to feed back the ultrasonic guided wave signal to the on-board center processing and decision-making module; the on-board center processing and decision-making module filters and packs the ultrasonic guided wave signal received and transmitted by the storage module Network, extract the characteristics of the wave packet of the ultrasonic guided wave, judge the properties of the wave packet in the waveform signal, obtain the actual propagation speed of the guided wave in the high-speed rail track, and use the data stored in the on-board central processing and decision-making module database under the condition of no damage The waveform information is compared, and the damage characteristics in the received waveform signal are extracted. Through the high-speed rail track damage degree decision-making module, the damage is identified, located and evaluated. The track damage report is displayed on the train terminal display to prompt the high-speed train driver. Take corresponding driving measures and store the report information in the database of the on-board central processing and decision-making module to facilitate subsequent track maintenance and early warning work.

As shown in Figure 4, the ultrasonic guided wave excitation module includes a voice command receiver, a digital/analog converter, a signal amplifier and a piezoelectric chip exciter, and the voice command receives the language command sent by the vehicle-mounted center processing and decision-making module , and transmit the received voice command to the digital/analog converter, the digital excitation wave signal with a fixed frequency is pre-stored in the digital/analog converter, when the digital/analog converter receives the voice from the voice command receiver After the instruction, digital/analog conversion is performed on the digital excitation wave signal stored in it, and the analog excitation wave signal is transmitted to the signal amplifier; the signal amplifier is responsible for amplifying the analog excitation wave signal transmitted by the digital/analog converter to meet the The requirements for the voltage amplitude of the excitation signal, and the amplified excitation wave analog voltage is applied to the piezoelectric wafer actuator; the piezoelectric wafer actuator is pasted on the non-working surface of the high-speed rail track, and the piezoelectric wafer actuator is used to Ultrasonic guided waves are excited in the structure.

As shown in Figure 5, the ultrasonic guided wave signal receiving and storage module includes a piezoelectric chip receiver, a single-channel data collector and a data buffer, and the piezoelectric chip receiver is installed on the non-working surface of the selected high-speed rail track , a certain distance from the piezoelectric chip actuator (this distance is within the attenuation range of the ultrasonic guided wave signal), responsible for receiving the ultrasonic guided wave transmitted from the high-speed rail track, and transmitting the ultrasonic guided wave to the single-channel data collector; The channel data collector is responsible for digitizing the ultrasonic guided wave signal transmitted by the piezoelectric chip receiver, and transmitting the digitized ultrasonic guided wave to the data buffer; the data buffer is responsible for storing the ultrasonic guided wave digital signal transmitted by the single-channel data collector, And use the wireless network transmission module to feed back the ultrasonic guided wave signal back to the vehicle center processing and decision-making module.

As shown in Figure 6, the on-vehicle center processing and decision-making module includes a detection instruction generation module, a digital signal processing module and a high-speed rail track damage degree decision-making module, wherein the detection instruction generation module is used to generate the instruction information of the corresponding detection section, and the instruction information includes and Detect the number of the ultrasonic guided wave excitation module and ultrasonic guided wave signal receiving and storage module corresponding to the road section, the waveform information of the excited ultrasonic guided wave and the sampling information of data acquisition, etc.; the digital signal processing module receives the ultrasonic guided wave from the data buffer Signal, use the filtering and Hilbert envelope algorithm stored in the digital signal processing module to filter and envelope the ultrasonic guided wave signal, extract the wave packet characteristics of the ultrasonic guided wave, and judge the properties of the wave packet in the waveform signal. Obtain the actual propagation speed of the ultrasonic guided wave in the high-speed rail track. When there is damage in the high-speed rail track, the damage features will appear in the form of wave packets in the ultrasonic guided wave signal acquired by the ultrasonic guided wave signal receiving and storage module. Therefore, using the waveform information stored in the internal database of the on-board center processing and decision-making module for comparison without damage, the damage characteristics in the received waveform signal are extracted, and the high-speed rail track damage degree decision-making module is used to judge whether there is damage in the high-speed rail track and The severity of the damage is evaluated by multiplying the actual velocity of the guided wave mode by the arrival time of the damage wave packet and evaluating the damage location. Display the track damage report on the train terminal monitor, prompt the high-speed train driver to take corresponding driving measures, and store the report information in the database of the on-board center processing and decision-making module, providing theoretical support for subsequent track maintenance and early warning work .

When this embodiment is working, the on-vehicle center processing and decision-making module sends voice instructions to the ultrasonic guided wave excitation module through the wireless network transmission module, requesting to obtain a report on the damage of the high-speed rail track, and the voice instruction receiver in the ultrasonic guided wave excitation module receives from After the on-vehicle center processes and decides the voice command of the module, it transmits the command to the digital/analog converter. The digital quantity of the 100kHz excitation wave signal is pre-embedded in the digital/analog converter. After the instruction, the digital/analog converter will digitalize the pre-embedded excitation wave signal and convert it into a 100kHz ultrasonic guided wave excitation signal. The excitation signal is input to the signal amplifier. After being amplified by the signal amplifier, the excitation wave signal becomes into an excitation voltage that can be applied to the piezoelectric wafer actuator, and the piezoelectric wafer actuator injects the excitation wave signal into the high-speed rail track, as shown in Figure 1; due to the excitation of the excitation wave, the ultrasonic guided wave in the high-speed rail It is excited and propagates in the high-speed rail track. When the ultrasonic guided wave in the high-speed rail track propagates to the piezoelectric wafer receiver, the piezoelectric wafer receiver produces a deformation synchronous with the high-speed rail track, and converts the ultrasonic guided wave into an analog signal. The signal is input to a single-channel data collector, so that these elastic wave analog signals are digitized and sent to the data buffer, as shown in Figure 5; after the ultrasonic guided wave signal is collected, the digitized ultrasonic guided wave signal is stored in the data buffer The device is fed back to the on-board center processing and decision-making module through the wireless network transmission module. The on-board center processing and decision-making module receives the ultrasonic guided wave digital signal from the data buffer, and uses wavelet transform to denoise and filter the signal before processing. The processed signal is transformed by Hilbert to obtain the envelope of the signal, and then obtain the propagation time of the wave from the exciter to the receiver, and then use the distance between the piezoelectric wafer exciter and the piezoelectric wafer receiver to calculate the elastic wave in the friction The actual propagation speed of the film under the current conditions (for the high-speed rail track structure, the propagation speed of the ultrasonic guided wave is about 5000m/s). When there is damage in the high-speed rail track, as shown in Figure 1, in the ultrasonic guided wave signal acquired by the ultrasonic guided wave signal receiving and storage module, the damage feature will appear in the form of wave packets, as shown in Figure 7. By comparing the waveform information without damage in the internal database of the on-board center processing and decision-making module, the damage characteristics in the waveform signal can be extracted, such as the 1, 2, and 3 wave packets in Figure 7. Through these damage characteristics, the type, relative size and approximate location of the damage can be obtained. The damage information in Figure 1 is stored in the on-board center processing and decision-making module, and the damage assessment information is displayed on the train terminal monitor to prompt the high-speed train driver to take corresponding driving measures.

This example uses the propagation characteristics of elastic waves in the high-speed rail track and the influence on the propagation characteristics of ultrasonic guided waves when there is damage in the structure, and timely feedbacks the damage of the high-speed rail track to the high-speed rail driver using wireless network technology to achieve real-time monitoring of high-speed rail lines The purpose of road conditions is to improve the safety of high-speed rail driving, increase the convenience of high-speed rail track maintenance, increase the detection speed, and reduce the time occupied by high-speed rail tracks due to detection. In addition, the small damage in the high-speed rail track can be obtained and warned in time, which will greatly improve the real-time monitoring of the high-speed rail track, as well as the smoothness and safety of the high-speed rail operation.

Although the content of the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as limiting the present invention. Various modifications and alterations to the present invention will become apparent to those skilled in the art upon reading the above disclosure. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims (6)

1. the high-speed railway rail health monitoring systems based on supersonic guide-wave and wireless network, it is characterized in that comprising: wireless network transmission module, supersonic guide-wave stimulating module, ultrasonic guided wave signals receive and memory module, vehicle-mounted center processing and decision-making module, wherein:

Wireless network transmission module is responsible for sending to supersonic guide-wave stimulating module the detection instruction sent by vehicle-mounted center processing and decision-making module, and feeds back to vehicle-mounted center processing and decision-making module by coming from the guided wave signals that ultrasonic guided wave signals receives and memory module receives;

Supersonic guide-wave stimulating module, after receiving detection instruction, motivates supersonic guide-wave in high-speed railway rail, and guided wave signals is transferred to ultrasonic guided wave signals by waveguide medium and receives and memory module by supersonic guide-wave;

Ultrasonic guided wave signals reception and memory module receive the supersonic guide-wave in waveguide medium, by supersonic guide-wave analog signal figure, and digitized supersonic guide-wave is stored, then ultrasonic guided wave signals is transferred to vehicle-mounted center processing and decision-making module by wireless network transmission module;

Vehicle-mounted center processing and decision-making module to be sent supersonic guide-wave stimulating module by wireless transport module on the one hand and detect instruction; On the other hand filtering and Hilbert conversion are carried out to the ultrasonic guided wave signals that ultrasonic guided wave signals receives and memory module is fed back, extract the ripple bag feature that supersonic guide-wave arrives, judge the attribute of ripple bag, and compare with the waveform situation in zero damage situation in vehicle-mounted center processing and decision-making module internal database, judge the order of severity that whether there is damage and damage in high-speed railway rail, and the report of track degree of impairment is shown in train terminal, prompting high ferro train driver is taked to travel behave accordingly.

2. the high-speed railway rail health monitoring systems based on supersonic guide-wave and wireless network according to claim 1, it is characterized in that, described vehicle-mounted center processing and decision-making module comprise and detect instruction generation module, digital signal processing module and high-speed railway rail degree of injury decision-making module; Wherein:

Detect instruction generation module for generating the command information in corresponding detection section, command information comprises the supersonic guide-wave stimulating module corresponding with detecting section and ultrasonic guided wave signals receives and the numbering of memory module, the excitation shape information of supersonic guide-wave and the sample information of data acquisition;

Digital signal processing module receives the ultrasonic guided wave signals coming from data buffer, filtering is carried out to ultrasonic guided wave signals and asks envelope processing, extract the ripple bag feature that supersonic guide-wave arrives, judge the attribute of waveform signal medium wave bag, obtain the actual propagation speed of supersonic guide-wave in high-speed railway rail simultaneously, utilize the shape information be stored in vehicle-mounted center processing and decision-making module internal database in zero damage situation to compare, extract the damage characteristic in the waveform signal received;

High-speed railway rail degree of injury decision-making module judges whether there is damage, degree of injury in high-speed railway rail according to damage characteristic, utilize the actual speed of guided wave modal to be multiplied with the time of advent of damage ripple bag to assess the position damaged, the track degree of impairment report formed is shown in train terminal telltale, prompting high ferro train driver is taked to travel behave accordingly, and report information is stored in the data bank in vehicle-mounted center processing and decision-making module, for follow-up orbital maintenance and early warning work provide convenient.

3. the high-speed railway rail health monitoring systems based on supersonic guide-wave and wireless network according to claim 2, it is characterized in that, described detection instruction generation module, the wherein numbering of supersonic guide-wave stimulating module and ultrasonic guided wave signals reception and memory module, by the coded system of setting the guided wave stimulating module in route and ultrasonic guided wave signals to be received and memory module is numbered, be stored in the data bank of vehicle-mounted center processing and decision-making module, road section information one_to_one corresponding in this information and circuit, the particular location of guided wave stimulating module and ultrasonic guided wave signals reception and memory module can be located.

4. the high-speed railway rail health monitoring systems based on supersonic guide-wave and wireless network according to any one of claim 1-3, it is characterized in that, described supersonic guide-wave stimulating module comprises phonetic order receptor, D/A converter, signal amplifier and piezoelectric chip exiter; Wherein:

Phonetic order receptor receives the phonetic order coming from vehicle-mounted center processing and decision-making module, and is transferred in D/A converter by the phonetic order received;

The digital actuation waveform information with fixed frequency is prestored in D/A converter, after D/A converter receives the phonetic order coming from phonetic order receptor, the digital actuation shape information stored therein is converted to simulation ultrasonic guided wave signals, and simulation ultrasonic guided wave signals is transferred to signal amplifier;

The simulation ultrasonic guided wave signals that signal amplifier is responsible for D/A converter to transmit amplifies, and is transferred to piezoelectric chip exiter;

Piezoelectric chip exiter is pasted onto on high-speed railway rail inactive face, is responsible for motivating supersonic guide-wave in high-speed railway rail.

5. the high-speed railway rail health monitoring systems based on supersonic guide-wave and wireless network according to claim 4, it is characterized in that, it is characterized in that, described digital actuation waveform information, its frequency is 10kHz ~ 200kHz.

6. the high-speed railway rail health monitoring systems based on supersonic guide-wave and wireless network according to any one of claim 1-3, it is characterized in that, described ultrasonic guided wave signals receives and memory module, comprises piezoelectric chip receptor, single-channel data collector and data buffer, wherein:

Piezoelectric chip receptor is pasted onto on high-speed railway rail non-working surface, distance piezoelectric chip exiter certain distance, this distance, in the scope that ultrasonic guided wave signals is decayed, is responsible for receiving the supersonic guide-wave transmitted by high-speed railway rail, and supersonic guide-wave is passed to single-channel data collector;

The ultrasonic guided wave signals digitalisation transmitted by piezoelectric chip receptor is responsible for by single-channel data collector, and digitized supersonic guide-wave is transferred to data buffer;

Data buffer is responsible for the supersonic guide-wave digital signal storing the transmission of single-channel data collector, and utilizes wireless network transmission module that ultrasonic guided wave signals is fed back to vehicle-mounted center processing and decision-making module.