CN110988142A - Track aging fault detection system and method - Google Patents
Track aging fault detection system and method Download PDFInfo
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- CN110988142A CN110988142A CN201911311554.2A CN201911311554A CN110988142A CN 110988142 A CN110988142 A CN 110988142A CN 201911311554 A CN201911311554 A CN 201911311554A CN 110988142 A CN110988142 A CN 110988142A
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- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
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- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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Abstract
The embodiment of the invention provides a system and a method for detecting track aging faults, wherein the system comprises: the system comprises a plurality of trackside equipment, vehicle-mounted equipment and an upper computer, wherein the trackside equipment is sequentially arranged along a track; each trackside device periodically broadcasts positioning information; the vehicle-mounted equipment is arranged at the bottom of the train and comprises a wireless communication module, a three-axis vibration sensor, a memory and an MCU (microprogrammed control unit); the upper computer is used for positioning the train according to the positioning information stored in the memory, judging whether the track has an aging fault according to the vibration signal of the train and determining the position of the track with the aging fault. According to the track aging fault detection system and method provided by the embodiment of the invention, manual inspection is replaced by the trackside equipment and the vehicle-mounted three-axis vibration sensor, so that the high-efficiency detection of the track aging fault can be realized, the detection cost is reduced, and the safety and reliability of a train are improved.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a rail aging fault detection system and a rail aging fault detection method.
Background
In urban rail transit, the rail safety maintenance work is the most important. However, due to the limitation of the cost of the track detection equipment and the limitation of multiple factors such as installation and power supply, the track detection equipment cannot be inspected and maintained in good time. Thus, rail aging has become an unstable factor that threatens train safety over time and environmental factors.
In the prior art, a detection means for rail aging is relatively original, a completely feasible equipment type system for detecting the rail aging problem in real time does not exist, and manual inspection is basically relied on.
However, the manual inspection has huge labor cost, and the inspection cannot be effectively monitored, so that the detection efficiency is low.
Disclosure of Invention
The embodiment of the invention provides a track aging fault detection system and method, which are used for solving the technical problems in the prior art.
In order to solve the foregoing technical problem, in one aspect, an embodiment of the present invention provides a track aging fault detection system, including: the system comprises a plurality of trackside equipment, vehicle-mounted equipment and an upper computer;
a plurality of trackside equipment are sequentially arranged along the track; each trackside device periodically broadcasts positioning information;
the vehicle-mounted equipment is arranged at the bottom of the train and comprises a wireless communication module, a three-axis vibration sensor, a memory and an MCU (microprogrammed control unit), wherein the wireless communication module, the three-axis vibration sensor and the memory are respectively connected with the MCU;
the wireless communication module is used for receiving positioning information broadcasted by the trackside equipment and sending the signal intensity of the positioning information and the identification of the trackside equipment reporting the positioning information to the MCU;
the three-axis vibration sensor is used for acquiring a vibration signal of the train and sending the vibration signal to the MCU;
the MCU is used for storing the signal intensity of the received positioning information and the identification of the trackside equipment reporting the positioning information into the memory, and storing the vibration signal of the train received from the triaxial vibration sensor into the memory when the signal intensity of the positioning information is received;
the upper computer is used for positioning the train according to the signal strength of the positioning information stored in the memory and the identification of the trackside equipment reporting the positioning information, judging whether the track has an aging fault according to the vibration signal of the train, and determining the position of the track with the aging fault.
Further, the wireless communication module is a bluetooth module.
Further, the positioning information at least comprises a Bluetooth name and an identification of the trackside device.
Further, the positioning information also comprises the residual capacity of a battery in the trackside equipment.
Further, a plurality of trackside equipment are sequentially installed along the track at preset intervals;
the preset distance is larger than the diameter of the signal coverage range of the trackside equipment.
Further, the vibration signal is a vibration intensity.
Further, the model of the three-axis vibration sensor is LIS 331.
On the other hand, an embodiment of the present invention provides a rail aging fault detection method based on the rail aging fault detection system, including:
when the train runs into the signal coverage range of the trackside equipment, the wireless communication module periodically receives the positioning information broadcast by the trackside equipment and sends the signal intensity of the positioning information and the identification of the trackside equipment reporting the positioning information to the MCU;
when receiving the signal intensity of the positioning information, the MCU triggers the storage of the vibration signal of the train, which is acquired by the triaxial vibration sensor, in the memory, and simultaneously stores the received signal intensity of the positioning information and the identification of the trackside equipment reporting the positioning information in the memory;
after the train finishes a trip task, the upper computer acquires the signal intensity of the positioning information from the memory and the identification of the trackside equipment reporting the positioning information to position the train, judges whether the track has an aging fault or not according to the vibration signal of the train, and determines the position of the track with the aging fault.
Further, whether the track has an aging fault is judged according to the vibration signal of the train, and the method specifically comprises the following steps:
calculating the vibration frequency according to the vibration intensity of the vibration signal;
calculating the change rate of the vibration frequency according to the vibration frequency;
and if the change rate of the vibration frequency is greater than a preset threshold value, determining that the track has an aging fault.
Furthermore, the positioning information broadcast by the trackside equipment also comprises the residual capacity of a battery in the trackside equipment;
correspondingly, the MCU stores the signal strength of the received positioning information and the identification of the trackside equipment reporting the positioning information into the memory, and simultaneously stores the residual electric quantity of the battery in the trackside equipment in the positioning information into the memory;
after the train finishes the trip task, the upper computer also carries out low-power reminding according to the residual power of the battery in each trackside device.
According to the track aging fault detection system and method provided by the embodiment of the invention, manual inspection is replaced by the trackside equipment and the vehicle-mounted three-axis vibration sensor, so that the high-efficiency detection of the track aging fault can be realized, the detection cost is reduced, and the safety and reliability of a train are improved.
Drawings
FIG. 1 is a schematic diagram of a rail aging fault detection system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a track aging fault detection method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The arrival of thing networking era is fine provides the scheme of feasibility for track traffic intelligence fortune dimension, and thing networking equipment has had low-cost concurrently, and small, the characteristics of low-power consumption can use the battery power supply under the condition that does not influence train safety to whole line is laid, carries out real-time supervision to the track through the sensor, accomplishes putting up of whole fortune dimension network.
Bluetooth technology was created in the last 90 s and later, technical standards were defined by the bluetooth special interest group. It was originally intended to enable connection between a wireless telephone and a personal PC, headset and desktop device through a short-range wireless connection, thereby forming a small-range personal area network. With the development of wireless technology, the transmission rate and the load capacity of bluetooth are continuously enhanced, and the applicable scenes are more and more diversified, especially after 4.0 bluetooth, the power consumption and the transmission distance of the bluetooth technology are remarkably improved, and the bluetooth positioning technology is continuously applied to various internet of things directions, and meanwhile, the bluetooth positioning technology also becomes a subject of controversial research of various large wireless application schemes.
The embodiment of the invention provides a track aging fault detection system which can realize the acquisition of track vibration conditions and the monitoring of trackside environment and trackside equipment battery power based on wireless positioning and networking technologies.
Fig. 1 is a schematic diagram of a track aging fault detection system according to an embodiment of the present invention, and as shown in fig. 1, the track aging fault detection system according to the embodiment of the present invention includes: a plurality of trackside devices (only one trackside device is shown in fig. 1 as an example), an on-board device, and an upper computer;
a plurality of trackside equipment are sequentially arranged along the track; each trackside device periodically broadcasts positioning information;
the vehicle-mounted equipment is arranged at the bottom of the train and comprises a wireless communication module, a three-axis vibration sensor, a memory and an MCU (microprogrammed control unit), wherein the wireless communication module, the three-axis vibration sensor and the memory are respectively connected with the MCU;
the wireless communication module is used for receiving positioning information broadcasted by the trackside equipment and sending the signal intensity of the positioning information and the identification of the trackside equipment reporting the positioning information to the MCU;
the three-axis vibration sensor is used for acquiring a vibration signal of the train and sending the vibration signal to the MCU;
the MCU is used for storing the signal intensity of the received positioning information and the identification of the trackside equipment reporting the positioning information into the memory, and storing the vibration signal of the train received from the triaxial vibration sensor into the memory when the signal intensity of the positioning information is received;
the upper computer is used for positioning the train according to the signal strength of the positioning information stored in the memory and the identification of the trackside equipment reporting the positioning information, judging whether the track has an aging fault according to the vibration signal of the train, and determining the position of the track with the aging fault.
Specifically, a plurality of trackside equipment are sequentially installed along the track; each trackside device periodically broadcasts positioning information.
The deployment of the trackside equipment is flexible, the trackside equipment can be deployed on the whole track along the track, and the trackside equipment can be distributed along the whole track railway at fixed intervals or not. Because of small size, the trackside equipment can be directly fixed on various structures close to the track by using the binding bands, and for a curve, because the installation position of the trackside equipment is close to the ground, the signal coverage range of the trackside equipment is limited, and the trackside equipment can be used as a straight line.
The trackside equipment comprises a wireless communication module which is used for periodically broadcasting the positioning information. The period for which the trackside devices broadcast the positioning information may be set as practical, for example, 20 milliseconds.
When the trackside equipment is installed at fixed intervals, the spacing distance is greater than 2 times of the limit positioning distance, so that the condition that the broadcasting information of two trackside equipment simultaneously triggers the vehicle-mounted equipment to acquire the vibration signals and the calculation result is influenced is avoided. Wherein the limit positioning distance of the trackside equipment is the radius of the signal coverage range of the trackside equipment.
The mobile unit is installed in the train bottom, for example, can install on the beam type structure below the train skirtboard, adopts glue to add the mode of bandage fixed, each train only need install one can, just so accomplish whole thing networking and deploy the flow.
The vehicle-mounted equipment comprises a wireless communication module, a three-axis vibration sensor, a storage and an MCU (microprogrammed control unit), wherein the wireless communication module, the three-axis vibration sensor and the storage are respectively connected with the MCU.
The wireless communication module is used for scanning and receiving the positioning information broadcasted by the trackside equipment, calculating the signal intensity according to the positioning information, and sending the signal intensity of the positioning information and the identification of the trackside equipment reporting the positioning information to the MCU.
The three-axis vibration sensor is used for acquiring vibration signals of the train and sending the vibration signals to the MCU.
And after receiving the positioning information broadcast by the trackside equipment, the MCU starts to read the vibration signals of the train acquired by the three-axis vibration sensor. And storing the vibration signal in a memory, and storing the signal strength of the received positioning information and the identification of the trackside equipment reporting the positioning information in the memory.
The upper computer is used for positioning the train according to the signal strength of the positioning information stored in the memory and the identification of the trackside equipment reporting the positioning information, judging whether the track has an aging fault according to the vibration signal of the train, and determining the position of the track with the aging fault.
According to the rail aging fault detection system provided by the embodiment of the invention, manual inspection is replaced by the trackside equipment and the vehicle-mounted three-axis vibration sensor, so that the high-efficiency detection of the rail aging fault can be realized, the detection cost is reduced, and the safety and the reliability of a train are improved.
Based on any of the above embodiments, further, the wireless communication module is a bluetooth module.
Specifically, the track aging fault detection system provided by the embodiment of the invention is based on the bluetooth 5.0 technology, and realizes the dynamic connection between the vehicle-mounted equipment and the trackside equipment in the advancing process and the continuous data interaction process by using the characteristics of high throughput, low power consumption, long transmission distance, low cost and the like in a point-to-point manner.
The wireless communication module in the trackside equipment and the wireless communication module in the vehicle-mounted equipment both adopt Bluetooth modules, so that the power consumption is reduced, and the cost is reduced.
According to the rail aging fault detection system provided by the embodiment of the invention, manual inspection is replaced by the trackside equipment and the vehicle-mounted three-axis vibration sensor, so that the high-efficiency detection of the rail aging fault can be realized, the detection cost is reduced, and the safety and the reliability of a train are improved.
Based on any one of the above embodiments, further, the positioning information at least includes a bluetooth name and an identifier of the trackside device.
Particularly, unified Bluetooth names are adopted when the trackside equipment broadcasts positioning information, and scanning of the vehicle-mounted equipment is facilitated. The location information broadcast by the trackside device contains at least a bluetooth name and an identification of the trackside device. In the deployment process of the trackside equipment, the identification IDs of the trackside equipment deployed along the line can be deployed according to the ascending sequence of ID numbers.
According to the rail aging fault detection system provided by the embodiment of the invention, manual inspection is replaced by the trackside equipment and the vehicle-mounted three-axis vibration sensor, so that the high-efficiency detection of the rail aging fault can be realized, the detection cost is reduced, and the safety and the reliability of a train are improved.
Based on any one of the above embodiments, further, the positioning information further includes a remaining power of a battery in the trackside equipment.
Specifically, the trackside equipment is used as a positioning tag and simple data acquisition, the trackside equipment is powered by a battery, and the trackside equipment further comprises a voltage comparator, and the residual capacity of the battery is determined through the voltage comparator.
In order to avoid the battery power in the trackside equipment from being exhausted, the detection effect is influenced. In the embodiment of the invention, the positioning information broadcast by the trackside equipment also comprises the residual electric quantity of the battery in the trackside equipment.
And the trackside equipment reads the voltage attenuation state of the battery through the voltage comparator to judge the electric quantity, and finally packages the electric quantity in the positioning information and continuously broadcasts the electric quantity.
After the upper computer acquires the residual electric quantity of the battery in each trackside device, the trackside device with the electric quantity lower than the preset threshold value can be reminded of the low electric quantity, so that the working personnel can replace the battery in time.
According to the rail aging fault detection system provided by the embodiment of the invention, manual inspection is replaced by the trackside equipment and the vehicle-mounted three-axis vibration sensor, so that the high-efficiency detection of the rail aging fault can be realized, the detection cost is reduced, and the safety and the reliability of a train are improved.
Based on any one of the above embodiments, further, a plurality of trackside devices are sequentially installed along the track at preset intervals;
the preset distance is larger than the diameter of the signal coverage range of the trackside equipment.
Specifically, the trackside equipment can be deployed on the whole track along the track, and the trackside equipment can be distributed along the whole track railway at fixed intervals, so that the deployment is flexible, and the trackside equipment can also be deployed at non-fixed intervals.
According to the embodiment of the invention, when the fixed-interval installation is carried out, the interval distance is more than 2 times of the limit positioning distance, so that the condition that the vehicle-mounted equipment is triggered to acquire the vibration signal by the broadcast information of two pieces of trackside equipment at the same time to influence the calculation result is avoided. Wherein the limit positioning distance of the trackside equipment is the radius of the signal coverage range of the trackside equipment.
According to the rail aging fault detection system provided by the embodiment of the invention, manual inspection is replaced by the trackside equipment and the vehicle-mounted three-axis vibration sensor, so that the high-efficiency detection of the rail aging fault can be realized, the detection cost is reduced, and the safety and the reliability of a train are improved.
Based on any one of the above embodiments, further, the model of the three-axis vibration sensor is LIS 331.
Based on any one of the above embodiments, further, the vibration signal is a vibration intensity.
Specifically, the model of the triaxial vibration sensor adopted in the embodiment of the present invention is LIS331, and the acceleration data of the sensor chip LIS331 is read, so that the vibration conditions in three spatial directions can be represented.
According to the rail aging fault detection system provided by the embodiment of the invention, manual inspection is replaced by the trackside equipment and the vehicle-mounted three-axis vibration sensor, so that the high-efficiency detection of the rail aging fault can be realized, the detection cost is reduced, and the safety and the reliability of a train are improved.
Fig. 2 is a schematic diagram of a track aging fault detection method according to an embodiment of the present invention, and as shown in fig. 2, the embodiment of the present invention provides a track aging fault detection method based on a track aging fault detection system according to any of the above embodiments, where the method includes:
step S201, when the train runs into the signal coverage range of the trackside equipment, the wireless communication module periodically receives the positioning information broadcast by the trackside equipment, and sends the signal intensity of the positioning information and the identification of the trackside equipment reporting the positioning information to the MCU.
Specifically, a plurality of low-power trackside devices are deployed on a trackside, each trackside device periodically broadcasts positioning information, for example, data broadcast is continuously performed at 20ms intervals, and identification IDs of trackside devices deployed along a track can be deployed in an order of increasing ID numbers.
If the Bluetooth technology is adopted, the Bluetooth names in the broadcasted positioning information are all set as fixed names so as to be convenient for the vehicle-mounted equipment to scan and identify. Meanwhile, the trackside equipment needs to acquire the electric quantity state of the battery at regular time through the voltage comparator and package the residual electric quantity data of the battery in a broadcast positioning information data packet.
During the process of train moving, the vehicle-mounted device can continuously scan the fixed Bluetooth name, when the train runs to the signal coverage range of the trackside device, the vehicle-mounted device scans the positioning information broadcasted by the trackside device, the vehicle-mounted device periodically receives the positioning information broadcasted by the trackside device through the Bluetooth module, extracts the battery electric quantity state data encapsulated in the broadcasted positioning information data packet and the data such as trackside device ID, extracts the signal intensity RSSI of the positioning information by reading the internal calculation result of the Bluetooth module, and transmits the data to the vehicle-mounted end MCU after data integration.
Step S202, when the MCU receives the signal intensity of the positioning information, the vibration signal of the train collected by the triaxial vibration sensor is triggered to be stored in the memory, and meanwhile, the received signal intensity of the positioning information and the identification of the trackside equipment reporting the positioning information are also stored in the memory.
Specifically, after receiving a data packet transmitted by the bluetooth module, the MCU extracts the battery power, the signal strength value RSSI and the ID of the trackside device, collects the triaxial vibration data by using the data packet as a trigger condition, and continuously packages and stores the vibration data in the external flash memory for subsequent analysis by reading the vibration signal of the train collected by the triaxial vibration sensor to indicate the vibration conditions in three spatial directions. The triaxial vibration sensor may employ a LIS331 type sensor.
Step S203, after the train finishes the trip task, the upper computer acquires the signal intensity of the positioning information and the identification of the trackside equipment reporting the positioning information from the memory to position the train, judges whether the track has the aging fault according to the vibration signal of the train, and determines the position of the track with the aging fault.
Specifically, after the train finishes a trip task, all data are exported from the memory to the upper computer software, and the software analyzes the data and draws a triaxial vibration data curve and a signal intensity curve of the positioning information. The Bluetooth positioning technology is based on signal strength, in a certain distance range, the vehicle-mounted equipment can scan the signal strength value of positioning information broadcasted by the trackside equipment through Bluetooth, the signal strength value is stably fluctuated up and down on a horizontal line, and the signal strength value can be used as the basis for distance determination through filtering calculation.
Because the train travels on the rail and can produce the vibration certainly, but because the rail changes along with time and environment, can produce certain ageing phenomenon, the vibration frequency and the vibration intensity that produce in the train course of traveling all can change so, can demonstrate index such as track vibration frequency and vibration intensity through the vibration curve, alright accomplish the monitoring and the prejudgement to track ageing problem, reduce the safety risk.
According to the rail aging fault detection method provided by the embodiment of the invention, manual inspection is replaced by the trackside equipment and the vehicle-mounted three-axis vibration sensor, so that the high-efficiency detection of the rail aging fault can be realized, the detection cost is reduced, and the safety and the reliability of a train are improved.
Based on any one of the above embodiments, further, judging whether the track has an aging fault according to the vibration signal of the train specifically includes:
calculating the vibration frequency according to the vibration intensity of the vibration signal;
calculating the change rate of the vibration frequency according to the vibration frequency;
and if the change rate of the vibration frequency is greater than a preset threshold value, determining that the track has an aging fault.
Specifically, after the upper computer acquires the vibration signal of the train, the vibration intensity of the vibration signal of the train is compared with a preset threshold value, when the vibration intensity is larger than the preset threshold value, the effective vibration is determined to be one-time, and the vibration smaller than the preset threshold value is determined to be noise.
Then, according to the time interval between the effective vibration signals, the vibration frequency is calculated, and then the change rate of the vibration frequency is calculated according to the vibration frequency.
And if the change rate of the vibration frequency is larger than a preset threshold value, determining that the track has the aging fault.
According to the rail aging fault detection method provided by the embodiment of the invention, manual inspection is replaced by the trackside equipment and the vehicle-mounted three-axis vibration sensor, so that the high-efficiency detection of the rail aging fault can be realized, the detection cost is reduced, and the safety and the reliability of a train are improved.
Based on any of the above embodiments, further, the positioning information broadcast by the trackside device further includes a remaining power of a battery in the trackside device;
correspondingly, the MCU stores the signal strength of the received positioning information and the identification of the trackside equipment reporting the positioning information into the memory, and simultaneously stores the residual electric quantity of the battery in the trackside equipment in the positioning information into the memory;
after the train finishes the trip task, the upper computer also carries out low-power reminding according to the residual power of the battery in each trackside device.
Specifically, the embodiment of the invention can also monitor the residual capacity of the battery in the trackside equipment.
The location information broadcast by the trackside device also contains the remaining power of the battery in the trackside device.
The MCU stores the signal strength of the received positioning information and the identification of the trackside equipment reporting the positioning information to the memory, and simultaneously stores the residual electric quantity of the battery in the trackside equipment in the positioning information to the memory.
After the train finishes a trip task, the upper computer acquires the residual electric quantity of the battery in each trackside device from the memory, compares the residual electric quantity of the battery in each trackside device with a preset threshold value, and the battery with the residual electric quantity lower than the preset threshold value is considered to need to be replaced with the battery in time, and sends out a low-power prompt to remind a worker to replace the battery in time.
According to the rail aging fault detection method provided by the embodiment of the invention, manual inspection is replaced by the trackside equipment and the vehicle-mounted three-axis vibration sensor, so that the high-efficiency detection of the rail aging fault can be realized, the detection cost is reduced, and the safety and the reliability of a train are improved.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A rail degradation fault detection system, comprising: the system comprises a plurality of trackside equipment, vehicle-mounted equipment and an upper computer;
a plurality of trackside equipment are sequentially arranged along the track; each trackside device periodically broadcasts positioning information;
the vehicle-mounted equipment is arranged at the bottom of the train and comprises a wireless communication module, a three-axis vibration sensor, a memory and an MCU (microprogrammed control unit), wherein the wireless communication module, the three-axis vibration sensor and the memory are respectively connected with the MCU;
the wireless communication module is used for receiving positioning information broadcasted by the trackside equipment and sending the signal intensity of the positioning information and the identification of the trackside equipment reporting the positioning information to the MCU;
the three-axis vibration sensor is used for acquiring a vibration signal of the train and sending the vibration signal to the MCU;
the MCU is used for storing the signal intensity of the received positioning information and the identification of the trackside equipment reporting the positioning information into the memory, and storing the vibration signal of the train received from the triaxial vibration sensor into the memory when the signal intensity of the positioning information is received;
the upper computer is used for positioning the train according to the signal strength of the positioning information stored in the memory and the identification of the trackside equipment reporting the positioning information, judging whether the track has an aging fault according to the vibration signal of the train, and determining the position of the track with the aging fault.
2. The rail degradation fault detection system of claim 1, wherein the wireless communication module is a bluetooth module.
3. The track aging fault detection system of claim 2, wherein the location information includes at least a bluetooth name and an identification of a trackside device.
4. The rail degradation fault detection system of claim 1, wherein the location information further comprises a remaining power of a battery in the trackside equipment.
5. The track degradation fault detection system of claim 1, wherein a plurality of trackside devices are sequentially installed along the track at a preset pitch;
the preset distance is larger than the diameter of the signal coverage range of the trackside equipment.
6. The rail degradation fault detection system of claim 1, wherein the vibration signal is a vibration intensity.
7. The rail degradation fault detection system of claim 1 wherein the three-axis vibration sensor is model number LIS 331.
8. A rail aging fault detection method based on the rail aging fault detection system according to any one of claims 1 to 7, comprising:
when the train runs into the signal coverage range of the trackside equipment, the wireless communication module periodically receives the positioning information broadcast by the trackside equipment and sends the signal intensity of the positioning information and the identification of the trackside equipment reporting the positioning information to the MCU;
when receiving the signal intensity of the positioning information, the MCU triggers the storage of the vibration signal of the train, which is acquired by the triaxial vibration sensor, in the memory, and simultaneously stores the received signal intensity of the positioning information and the identification of the trackside equipment reporting the positioning information in the memory;
after the train finishes a trip task, the upper computer acquires the signal intensity of the positioning information from the memory and the identification of the trackside equipment reporting the positioning information to position the train, judges whether the track has an aging fault or not according to the vibration signal of the train, and determines the position of the track with the aging fault.
9. The rail aging fault detection method according to claim 8, wherein judging whether the rail has the aging fault according to the vibration signal of the train specifically includes:
calculating the vibration frequency according to the vibration intensity of the vibration signal;
calculating the change rate of the vibration frequency according to the vibration frequency;
and if the change rate of the vibration frequency is greater than a preset threshold value, determining that the track has an aging fault.
10. The track aging fault detection method according to claim 8, wherein the positioning information broadcast by the trackside device further includes a remaining power of a battery in the trackside device;
correspondingly, the MCU stores the signal strength of the received positioning information and the identification of the trackside equipment reporting the positioning information into the memory, and simultaneously stores the residual electric quantity of the battery in the trackside equipment in the positioning information into the memory;
after the train finishes the trip task, the upper computer also carries out low-power reminding according to the residual power of the battery in each trackside device.
Priority Applications (1)
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