CN111332338A - Track disease detection system - Google Patents
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- CN111332338A CN111332338A CN202010214322.1A CN202010214322A CN111332338A CN 111332338 A CN111332338 A CN 111332338A CN 202010214322 A CN202010214322 A CN 202010214322A CN 111332338 A CN111332338 A CN 111332338A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or vehicle trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or vehicle trains
- B61L25/021—Measuring and recording of train speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or vehicle train for signalling purposes ; On-board control or communication systems
- B61L15/0018—Communication with or on the vehicle or vehicle train
- B61L15/0027—Radio-based, e.g. using GSM-R
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or vehicle train for signalling purposes ; On-board control or communication systems
- B61L15/0081—On-board diagnosis or maintenance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or vehicle trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or vehicle trains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or vehicle trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or vehicle trains
- B61L25/026—Relative localisation, e.g. using odometer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/40—Handling position reports or trackside vehicle data
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/50—Trackside diagnosis or maintenance, e.g. software upgrades
- B61L27/53—Trackside diagnosis or maintenance, e.g. software upgrades for trackside elements or systems, e.g. trackside supervision of trackside control system conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/70—Details of trackside communication
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention provides a track disease detection system. The method comprises the following steps: the system comprises a vehicle-mounted sensor, vehicle-mounted wireless transmission equipment, ground data wireless receiving equipment and a ground data processing system; the vehicle-mounted sensor transmits the measured vibration data, running speed, mileage information and station information of the vehicle to the vehicle-mounted wireless transmission equipment, and then transmits the vibration data, the running speed, the mileage information and the station information to the ground data processing system through the ground data wireless receiving equipment. And the ground data processing system is used for analyzing and processing the received vibration data, the running speed, the mileage information and the station information of the vehicle, comparing the analysis result with the characteristics of the known track diseases and acquiring the detection result of the track diseases according to the comparison result. The method of the invention can not only truly reflect the track service state of the vehicle in the main line operation when in operation, but also identify the rail diseases based on the processing and analyzing result of the vehicle vibration data, and provide a targeted rail grinding or maintenance suggestion for the maintenance department.
Description
Technical Field
The invention relates to the technical field of rail disease detection, in particular to a rail disease detection system.
Background
The rapid development of urban rail transit puts higher requirements on the service state of the steel rail supporting the safe operation of the subway vehicle. The steel rail is used as an important component of a rail structure and is one of important links for directly reflecting the service state of a rail traffic line, and whether the service state of the steel rail is good or not can directly influence the safe operation of a subway vehicle. The existence of track diseases increases the impact power of the steel rail when a train passes through, can not only cause the vibration of various vehicle structures and key components and accelerate the vibration abrasion of the key components of the vehicle, but also accelerate the deterioration and deformation of the track structures and a track bed, possibly cause the climbing and derailment of the vehicle, and form great safety hazard to vehicle equipment and driving safety. Therefore, the method has great significance for timely detecting the track diseases and realizing the regular detection of the track diseases.
In the main line operation of the current subway vehicle, the influence of the existence of the rail damage on the safe operation of the subway vehicle is serious. The rail damage can cause severe vibration of vehicles, bogies and wheel sets, so that damage to the vehicles and parts of the rails is accelerated, and safety and stability of driving are seriously affected. Therefore, subway operation companies need to obtain an online detection method and an online detection system for rail diseases, so that the rail grinding or maintenance with the basis is performed, and the operation safety and reliability are improved.
The rail disease detection method based on the subway operation vehicle draws attention from domestic and foreign researchers in recent years. At present, a rail defect detection method in the prior art is as follows: the vibration acceleration of a locomotive body is measured based on a vehicle-mounted track dynamic detection system (car shaking instrument), so that the real-time monitoring of a steel rail line is realized, and the research on the detection of the service state of the steel rail line is realized.
Another rail disease detection method in the prior art is as follows: based on the rotary laser scanning distance measuring sensor, the distance measuring sensor is directly installed on a locomotive running on a main line, and the purpose of detecting the state of a steel rail line is achieved by calculating the distance between the distance measuring sensor and an obstacle.
The two rail disease detection methods in the prior art have the following defects: the equipment structure system required by the methods is complex, and the method is mostly focused on the detection of the rail line obstacle, so that a rail disease detection system with simplicity and feasibility under the actual operation condition of the subway is not formed.
Disclosure of Invention
The embodiment of the invention provides a track disease detection system, which aims to overcome the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme.
A track disease detection system, comprising: the system comprises a vehicle-mounted sensor, vehicle-mounted wireless transmission equipment, ground data wireless receiving equipment and a ground data processing system;
the vehicle-mounted sensor is used for being mounted on a vehicle, is electrically connected with the vehicle-mounted wireless transmission equipment, measures vibration data, running speed, mileage information and station information of the vehicle, and transmits the vibration data, the running speed, the mileage information and the station information of the vehicle to the vehicle-mounted wireless transmission equipment;
the vehicle-mounted wireless transmission equipment is used for being installed on a vehicle, is in wireless network connection with the ground data wireless receiving equipment, and transmits the received vibration data, running speed, mileage information and station information of the vehicle to the ground data wireless receiving equipment through a wireless network;
the ground data wireless receiving equipment is used for receiving the vibration data, the running speed, the mileage information and the station information of the vehicle transmitted by the vehicle-mounted wireless transmission equipment and transmitting the vibration data, the running speed, the mileage information and the station information to the ground data processing system;
the ground data processing system is used for analyzing and processing the received vibration data, the running speed, the mileage information and the station information of the vehicle, comparing the analysis result with the characteristics of the known track diseases and obtaining the detection result of the track diseases according to the comparison result.
Preferably, the vehicle-mounted sensors comprise vehicle-mounted acceleration sensors, 4 vertical acceleration sensors are mounted at four corners of a bogie of the vehicle, and the acceleration sensors on the same side respectively and independently detect vibration data of the bogie on the same side;
the axle boxes of the vehicle are also provided with vertical acceleration sensors, and the four axle boxes of one vehicle are provided with four vertical acceleration sensors in total for detecting vibration data of the axle boxes.
Preferably, the vehicle-mounted sensor further comprises a radio frequency tag module, the radio frequency tag module is mounted at the bottom of the vehicle and comprises a radio frequency tag, a reader and an antenna, the radio frequency tag is mounted at the entrance and the exit, the antenna and the reader are mounted at the bottom of the vehicle, when a train with the antenna exits and enters the exit, the antenna finishes the action of scanning the radio frequency tag along with the movement of the train, and the reader identifies the information of the exit frequency tag and records the current station information.
Preferably, the vehicle-mounted sensor further comprises a radar speed measuring sensor, and the radar speed measuring sensor is mounted at the bottom of the vehicle and used for measuring the running distance and speed of the vehicle.
Preferably, the acceleration sensor is used for converting the measured vehicle vibration data into an electric signal and transmitting the electric signal to the vehicle-mounted wireless transmission equipment;
the radar speed measurement sensor is used for transmitting the measured running speed and mileage information of the vehicle to the vehicle-mounted wireless transmission equipment;
the radio frequency tag module is used for transmitting the identified station information to the vehicle-mounted wireless transmission equipment;
the vehicle-mounted wireless transmission equipment is used for converting an electric signal transmitted by the acceleration sensor into a corresponding vibration acceleration signal according to the parameter standard of the sensor, and transmitting the vibration acceleration signal, the vehicle running speed, the mileage information and the station information to ground data wireless receiving equipment by virtue of a vehicle-ground communication system;
the ground data wireless receiving equipment is used for analyzing and processing received vibration data, running speed, mileage information and station information of a vehicle as original data, performing Fourier transform, continuous wavelet transform and Hilbert-Huang transform on vibration acceleration in the original data to obtain frequency domain characteristics of an original vibration signal, extracting characteristic frequency and characteristic waveform data aiming at corrugation, collapse and track joint diseases, comparing the extracted characteristic frequency and characteristic waveform data of the track diseases with the characteristic vibration frequency and characteristic vibration waveform of known track diseases, and judging and obtaining a detection result of the track diseases on a track line through data fusion according to a comparison result.
According to the technical scheme provided by the embodiment of the invention, the method not only can truly reflect the service state of the track when the vehicle in the main line operation runs, but also can identify the rail diseases based on the processing and analyzing result of the vehicle vibration data, and provides a targeted rail grinding or maintenance suggestion for a maintenance department.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a structural diagram of a track disease detection system according to an embodiment of the present invention;
FIG. 2 is a schematic view of an embodiment of the present invention, illustrating a radio frequency tag module mounted on a bottom of a vehicle body;
FIG. 3 is a schematic diagram of a radar speed measurement sensor mounted at the bottom of a vehicle body according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating an operating principle of a radio frequency tag module according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a vehicle-mounted wireless transmission device according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a software structure of a track disease detection system according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
For the convenience of understanding the embodiments of the present invention, the following description will be further explained by taking several specific embodiments as examples in conjunction with the drawings, and the embodiments are not to be construed as limiting the embodiments of the present invention.
The invention provides a track disease detection system based on an operating vehicle, which mainly achieves the purpose of detecting track diseases based on the vibration of a bogie by arranging acceleration sensors on the bogie and an axle box of the operating vehicle, determining the position information of the operating vehicle by means of a radio frequency tag module, a speed measuring radar module and the like. The track disease detection system provided by the invention has detailed description on the composition of the detection system, the type selection and the arrangement position of the sensor, hardware equipment for detecting data acquisition, a data processing software system and the like, and provides a design idea for online detection of track diseases.
The general structure of the track disease detection system provided by the embodiment of the invention is shown in figure 1. The system comprises a vehicle-mounted sensor, vehicle-mounted wireless transmission equipment, ground data wireless receiving equipment and a ground data processing system. The system simultaneously measures vibration acceleration data of an axle box and a bogie of a vehicle by using a vehicle-mounted sensor, acquires position information of the vehicle by using a radio frequency tag module and a speed measuring radar, transmits the vibration acceleration data and the vehicle position data to ground data wireless receiving equipment by using vehicle-mounted wireless transmission equipment, and finally performs special processing on detection data by using a track disease detection algorithm in a ground data processing system, extracts a vibration characteristic value and performs track disease detection.
The hardware part of the track disease detection system comprises a vehicle-mounted sensor part, a high-speed data acquisition device, a vehicle-ground communication system and a ground data processing system containing various data processing algorithms. The vehicle-mounted sensor comprises an acceleration sensor, and the acceleration sensor is used for collecting vibration acceleration data of an axle box and a bogie of a vehicle, so that many problems need to be considered for selecting the acceleration sensor, including the detection direction, sensitivity, measuring range, resolution, frequency range and the like of acceleration.
The track disease detection system can be used for operations such as awakening, searching, parameter setting, data acquisition, real-time display, data downloading, dormancy control and the like of the wireless sensor node, and has a friendly man-machine interaction interface.
In the above-described track damage detection system, 4 vertical acceleration sensors are mounted at four corners of a bogie of a vehicle, and the acceleration sensors on the same side detect vibration data of the bogie on that side individually. The axle boxes of the vehicle are also provided with vertical acceleration sensors, and the four axle boxes of one vehicle are provided with four vertical acceleration sensors in total for detecting vibration data of the axle boxes. In addition, as shown in fig. 2, a radio frequency tag module is installed at the bottom of the vehicle body, as shown in fig. 3, a radar speed measurement sensor is installed at the bottom of the vehicle body, and a tag card reader in the radio frequency tag module is used for reading an absolute address of a line; the radar speed measurement sensor is used for measuring the distance traveled and the speed of the train.
The acceleration sensor converts measured vehicle vibration data into an electric signal, the electric signal is transmitted to the vehicle-mounted wireless transmission equipment through the transmission line, and the vehicle-mounted wireless transmission equipment converts the electric signal into a corresponding vibration acceleration signal according to the parameter standard of the sensor. And the vehicle running speed and mileage information measured by the radar speed measurement sensor and the station information obtained by the tag card reader are also transmitted to the vehicle-mounted wireless transmission equipment. And the vehicle-mounted wireless transmission equipment transmits the vibration acceleration signal, the vehicle running speed, the mileage information and the station information to ground data wireless receiving equipment by virtue of a vehicle-ground communication system, and finally, the data is processed by a ground data processing system to obtain a detection result of the track disease.
(1) Radio frequency tag module
Fig. 4 shows a schematic diagram of a working principle of a radio frequency tag module according to an embodiment of the present invention. As a non-contact automatic Identification technology, the Radio Frequency Identification (RFID) Radio Frequency technology can work in various severe environments. The device is composed of a tag, a reader and an antenna, wherein the radio frequency tag is mainly installed on the entrance and exit, the antenna is installed on the bottom of a train, when the train with the antenna exits and enters the exit, the antenna finishes the action of scanning the radio frequency tag along with the advance of the train, identifies the current station information and matches with the detection data. And transmitting the identified station information to the vehicle-mounted wireless transmission equipment.
(2) Radar speed measurement sensor
The radar speed measurement sensor is arranged at the bottom of a vehicle, measures the running speed of the vehicle in real time and calculates the running mileage information of the vehicle in the moving process of the vehicle, the radar combines the Doppler technology, adopts a parameterized frequency spectrum analysis method and a signal processing technology combining time domain signals and estimation, can quickly and accurately detect the running speed and direction of the electric bus under various road conditions, adopts an advanced double-antenna four-channel microwave design technology and an adaptive correction algorithm, is not influenced by wheel idling, slipping and roadbed flatness, and is accurate in speed measurement.
The radar speed measuring sensor has the working principle that the moving state of a moving object can be changed differently at different time, an antenna is arranged in the radar speed measuring sensor, the antenna is used for transmitting and receiving signals, the speed detection through the radar adopts a microwave detection technology of Doppler effect, the frequency of the generated transmitted wave and the amplitude of the microwave can be correspondingly changed, and based on the change, the traveling speed of the moving object in the opposite direction can be measured through the speed data captured by the radar, and the traveling speed of the moving object in the opposite direction can be measured, and the moving speed can be measuredTo measure the value of the Doppler frequency between the transmitted and received waves generated by the antenna during operation, using fdAnd (4) showing.
In the formula (f)cIs the radar operating frequency, v is the vehicle speed, c is the speed of light, and α is the antenna radiation angle.
F can be obtained by performing accurate spectrum analysis on echo signals generated in the whole running line of the vehicledThe value is substituted for the formula (1), and the travel distance D of the vehicle is obtained.
In the formula, T is a velocity measurement period;
the average speed of the locomotive is the time (i-1). T; v. ofiIs the locomotive speed at time i.T.
The rail defect detection system of the invention installs the acceleration sensors with high precision of double coordinates at four corners of a bogie, and installs the acceleration sensors of double coordinate axle boxes on four axle boxes. Table 1 selects several important sensor parameters, such as the detection direction, sensitivity, measurement range, and resolution of the acceleration, as the criteria for selecting the sensor. The main technical parameters of the radio frequency tag module and the speed measuring radar module are respectively detailed in table 2 and table 3.
TABLE 1
TABLE 2
| Parameter name | Content of parameters |
| Frequency range | 902～928MHz |
| Maximum power | 6W |
| Input impedance | 50Ω |
| Strength of wind resistance | 216Km/h |
| Joint | TNC |
TABLE 3
| Parameter name | Content of parameters |
| Frequency of operation | 24.15GHz |
| Range of velocity measurement | 2～400km/h |
| Accuracy of speed measurement | 1km/h |
| Operating temperature | -40℃～70℃ |
The LCO757 built-in IC strain acceleration sensor has three-direction vibration measurement, low noise and measuring range: +/-2 g to +/-200 g, single power supply (+9V to +24V), strong overload resistance up to 6000g, wide temperature range up to-40 to +125 ℃ and the like, and the main technical indexes are detailed in table 4.
TABLE 4
Fig. 5 shows a schematic diagram of a vehicle-mounted wireless transmission device according to an embodiment of the present invention, and main performance parameters of the vehicle-mounted wireless transmission device include:
(1) the number of channels: three channels
(2) Linearity: 0.1 percent of
(3) Inputting: voltage IEPE
(4) Temperature drift: 0.3. mu. epsilon/. degree.C
(5) Working time: 30 hours
(6) Range of measurement: 5V
(7) And (3) synchronization precision: 20 mu s, is at the leading level of the industry
(8) Storage capacity: 512MB (million)
(9) Communication distance: apparent distance of 500m
(10) Packet loss rate: the packet loss rate in the visual range of 500m is less than 0.01 percent
(11) The working frequency is as follows: 2.4GHz
(12) An antenna: the internal antenna and the external antenna are selectable
(13) Volume 70mm × 50mm × 25mm
2) The technical indexes of the ICP-W3 wireless ICP acquisition node are as follows
(1) The number of channels: three channels
(2) Measurable type: ICP type acceleration sensor
(3) Sampling frequency: 10 Hz-5 kHz, and the software can be set
(4) And (3) synchronization precision: 10 mu s, is at the leading level in the industry
(5) Communication distance: visual range 100m (capable of being increased to 1km)
(6) Working time: 40 hours
(7) The working frequency is as follows: 2.4GHz
(8) An antenna: built-in antenna
(9) Volume 84mm × 59mm × 33mm
The main technical indexes of the ground data wireless receiving equipment are shown in table 5.
TABLE 5
The ground data wireless receiving equipment can be a wireless base station which plays a role of 'starting and stopping' in a wireless acquisition system, controls various types of wireless sensors in an area and transmits acquired data to a computer. Each wireless base station can control a maximum of 100 sensor nodes (300 channels). The main performance parameters of the radio receiver module in the system are shown in table 5.
The software structure of the track disease detection system provided by the embodiment of the invention is shown in fig. 6. And the data analysis software of the ground data processing system analyzes and processes the received vibration data, the running speed, the mileage information and the station information of the vehicle as original data. The method comprises the steps of carrying out Fourier transform, continuous wavelet transform and Hilbert-Huang transform (EMD decomposition) on vibration acceleration in original data to obtain frequency domain characteristics of original vibration signals, extracting characteristic frequency and characteristic waveform data aiming at rail defects such as corrugation, collapse and rail joints, taking the characteristic vibration frequency and the characteristic vibration waveform of the known rail defects as defect identification standards, comparing the extracted characteristic frequency and the characteristic waveform data of the rail defects with the characteristic vibration frequency and the characteristic vibration waveform of the known rail defects, and judging and obtaining a detection result of the rail defects on a rail line through data fusion according to a comparison result. In addition, the position of the disease can be judged based on the original data such as the vehicle running speed, the mileage information, the station information and the like, so that the fixed-point maintenance can be performed more timely and rapidly.
In summary, the track disease detection system based on the operating vehicle provided by the embodiment of the invention is characterized in that the acceleration sensors are mounted on the bogie and the axle box of the operating vehicle, and the vibration acceleration data of the bogie is processed by the detection data acquisition device and the data processing device, so that the time-frequency characteristics of the track disease are extracted, and finally the real-time detection of the track disease is realized. The rail damage detection system not only can truly reflect the rail service state of the vehicle in the main line operation during the operation, but also can identify the rail damage based on the processing and analyzing result of the vehicle vibration data, and provides a targeted rail grinding or maintenance suggestion for a maintenance department, thereby reducing the time and economic cost, and further improving the service life and the safety of the subway vehicle during the operation. Therefore, the invention has certain economic benefit and social benefit.
The rail disease detection system based on the operating vehicle provided by the embodiment of the invention is a non-contact detection mode for indirectly detecting the rail disease by a method for detecting train vibration by arranging a sensor. The system is installed on a train operated on a main line, the required equipment structure is simple, the detection cost is far lower than that of a rail inspection vehicle, and the real-time performance of rail disease detection is fully realized, so that reference is provided for the use of a steel rail and the establishment of a maintenance strategy.
Those of ordinary skill in the art will understand that: the figures are merely schematic representations of one embodiment, and the blocks or flow diagrams in the figures are not necessarily required to practice the present invention.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for apparatus or system embodiments, since they are substantially similar to method embodiments, they are described in relative terms, as long as they are described in partial descriptions of method embodiments. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A track disease detection system, comprising: the system comprises a vehicle-mounted sensor, vehicle-mounted wireless transmission equipment, ground data wireless receiving equipment and a ground data processing system;
the vehicle-mounted sensor is used for being mounted on a vehicle, is electrically connected with the vehicle-mounted wireless transmission equipment, measures vibration data, running speed, mileage information and station information of the vehicle, and transmits the vibration data, the running speed, the mileage information and the station information of the vehicle to the vehicle-mounted wireless transmission equipment;
the vehicle-mounted wireless transmission equipment is used for being installed on a vehicle, is in wireless network connection with the ground data wireless receiving equipment, and transmits the received vibration data, running speed, mileage information and station information of the vehicle to the ground data wireless receiving equipment through a wireless network;
the ground data wireless receiving equipment is used for receiving the vibration data, the running speed, the mileage information and the station information of the vehicle transmitted by the vehicle-mounted wireless transmission equipment and transmitting the vibration data, the running speed, the mileage information and the station information to the ground data processing system;
the ground data processing system is used for analyzing and processing the received vibration data, the running speed, the mileage information and the station information of the vehicle, comparing the analysis result with the characteristics of the known track diseases and obtaining the detection result of the track diseases according to the comparison result.
2. The system of claim 1, wherein the vehicle-mounted sensors comprise vehicle-mounted acceleration sensors, 4 vertical acceleration sensors are mounted at four corners of a bogie of the vehicle, and the acceleration sensors on the same side respectively and independently detect vibration data of the bogie on the same side;
the axle boxes of the vehicle are also provided with vertical acceleration sensors, and the four axle boxes of one vehicle are provided with four vertical acceleration sensors in total for detecting vibration data of the axle boxes.
3. The system of claim 2, wherein the vehicle-mounted sensor further comprises a radio frequency tag module, the radio frequency tag module is mounted at the bottom of the vehicle and comprises a radio frequency tag, a reader and an antenna, the radio frequency tag is mounted at the entrance and the exit, the antenna and the reader are mounted at the bottom of the vehicle, when a train equipped with the antenna exits and enters the exit, the antenna completes the action of scanning the radio frequency tag along with the travel of the train, and the reader identifies the information of the exit frequency tag and records the current station information.
4. The system of claim 3, wherein the vehicle-mounted sensor further comprises a radar speed sensor mounted on the bottom of the vehicle for measuring the distance traveled and the speed of the vehicle.
5. The system of claim 4, wherein:
the acceleration sensor is used for converting the measured vehicle vibration data into an electric signal and transmitting the electric signal to the vehicle-mounted wireless transmission equipment;
the radar speed measurement sensor is used for transmitting the measured running speed and mileage information of the vehicle to the vehicle-mounted wireless transmission equipment;
the radio frequency tag module is used for transmitting the identified station information to the vehicle-mounted wireless transmission equipment;
the vehicle-mounted wireless transmission equipment is used for converting an electric signal transmitted by the acceleration sensor into a corresponding vibration acceleration signal according to the parameter standard of the sensor, and transmitting the vibration acceleration signal, the vehicle running speed, the mileage information and the station information to ground data wireless receiving equipment by virtue of a vehicle-ground communication system;
the ground data wireless receiving equipment is used for analyzing and processing received vibration data, running speed, mileage information and station information of a vehicle as original data, performing Fourier transform, continuous wavelet transform and Hilbert-Huang transform on vibration acceleration in the original data to obtain frequency domain characteristics of an original vibration signal, extracting characteristic frequency and characteristic waveform data aiming at corrugation, collapse and track joint diseases, comparing the extracted characteristic frequency and characteristic waveform data of the track diseases with the characteristic vibration frequency and characteristic vibration waveform of known track diseases, and judging and obtaining a detection result of the track diseases on a track line through data fusion according to a comparison result.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN112141175A (en) * | 2020-09-24 | 2020-12-29 | 广西交控智维科技发展有限公司 | Rail transit operation and maintenance system and method |
| CN112249093A (en) * | 2020-09-24 | 2021-01-22 | 广西交控智维科技发展有限公司 | Rail transit operation and maintenance system and method |
| CN112556627A (en) * | 2020-11-20 | 2021-03-26 | 中国铁道科学研究院集团有限公司 | Rail corrugation detection system and method |
| CN114413759A (en) * | 2022-02-08 | 2022-04-29 | 北京城建设计发展集团股份有限公司 | Track operation and maintenance system and method and electronic equipment |
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