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CN-121977430-A - Double-row double-side chain type self-powered wireless monitoring system device and method based on freight train wheel set

CN121977430ACN 121977430 ACN121977430 ACN 121977430ACN-121977430-A

Abstract

The invention relates to a double-row double-side chain type self-powered wireless monitoring system device and method based on a freight train wheel set, and belongs to the technical field of rail transit wireless monitoring. The invention discloses a double-row double-sided chain type self-powered wireless monitoring system device and method based on a freight train wheel set, wherein the device comprises a flexible strain sensor module and a double-row double-sided chain, wherein the flexible strain sensor module and the double-row double-sided chain are arranged on a rotating axle; the double-row double-sided chain is provided with a turbofan rotor power generation module, a high-efficiency current increasing module and a Bluetooth communication module, wherein power rectification modules are arranged in the high-efficiency current increasing module and the Bluetooth communication module, and alternating current generated by the turbofan rotor power generation module is subjected to alternating current-direct current conversion through the power rectification modules to provide stable voltage for the high-efficiency current increasing module and the Bluetooth communication module. The invention directly monitors the sensing signal of the flexible strain sensor module in real time by using the upper computer, thereby realizing acquisition, storage, real-time and transmission of sensor data and improving the innovation of the generator system.

Inventors

  • OUYANG HUAJIANG
  • ZHOU XIN
  • ZHAO HUAI
  • SONG WEIJIE
  • LI JINJIE

Assignees

  • 西南交通大学

Dates

Publication Date
20260505
Application Date
20260116

Claims (10)

  1. 1. The double-row double-side chain type self-powered wireless monitoring system device based on the freight train wheel set is characterized by comprising a flexible strain sensor module (4) and a pair of double-row double-side chains (17) which are arranged on a rotating axle (10), wherein a turbofan rotor power generation module (2), a high-efficiency current increasing module and a Bluetooth communication module (3) are arranged on the double-row double-side chains (17), a power rectifying module (5) is arranged in the high-efficiency current increasing module and the Bluetooth communication module (3), and alternating current generated by the turbofan rotor power generation module (2) is subjected to alternating current-direct current conversion through the power rectifying module (5) to provide stable voltage for the high-efficiency current increasing module and the Bluetooth communication module (3).
  2. 2. The double-row double-side chain type self-powered wireless monitoring system device based on the freight train wheel set according to claim 1, wherein the rotating axle (10) is processed based on high-quality medium carbon alloy steel materials.
  3. 3. The double-row double-sided chain type self-powered wireless monitoring system device based on the freight train wheel set according to claim 1, wherein the double-row double-sided chain (17) is provided with heterogeneous double-row bent plates (15).
  4. 4. The double-row double-sided chain type self-powered wireless monitoring system device based on the freight train wheel set according to claim 1, wherein the turbofan rotor power generation module (2) comprises blades (20), a generator rotating shaft (21), a coil rotor (22), a stator housing (23) and a generator diversion base (24) mounted on the double-row double-sided chain (17), the stator housing (23) is mounted on the generator diversion base (24), the coil rotor (22) is mounted on the left end of the generator rotating shaft (21), the blades (20) are mounted on the right end of the generator rotating shaft (21), the left end of the generator rotating shaft (21) is mounted in the stator housing (23), and one end of the coil rotor (22) with a permanent magnet assembly is arranged in the stator housing (23).
  5. 5. The double-row bilateral chain type self-powered wireless monitoring system device based on the freight train wheel set according to claim 1, wherein the high-efficiency flow increasing module and the Bluetooth communication module (3) comprise a high-efficiency flow increasing module (30), a communication module cover plate (31), a Bluetooth communication module (32) and a streamline housing (33) arranged on a double-row bilateral chain (17), the high-efficiency flow increasing module (30) and the Bluetooth communication module (32) are arranged in the streamline housing (33), and the communication module cover plate (31) covers the streamline housing (33).
  6. 6. The double-row double-sided chain type self-powered wireless monitoring system device based on the freight train wheel set according to claim 5, wherein the high-efficiency current increasing module (30) consists of a gas discharge tube, an inductor, a capacitor and a control IC, and is connected with a diode rectifier through a lead wire and then connected with a Bluetooth communication module (32).
  7. 7. The double-row double-side chain type self-powered wireless monitoring system device based on the freight train wheel set according to claim 5, wherein the Bluetooth communication module (32) is composed of a voltage acquisition unit and a Bluetooth communication unit, the voltage acquisition unit is composed of an analog circuit, an analog-to-digital converter, a microcontroller and a communication interface, and important components of the Bluetooth communication unit comprise a wireless radio frequency unit, a baseband/link control unit and a link management unit.
  8. 8. The double-row double-side chain type self-powered wireless monitoring system device based on the freight train wheel set according to claim 1, wherein the flexible strain sensor module (4) comprises an outer layer (40), an intermediate layer (41) and an inner layer (42) which are arranged from top to bottom, the outer layer (40) is used as a protection structure of the module, the intermediate layer (41) is a key component for converting a physical signal into an electric signal, the inner layer (42) is a channel for placing the intermediate layer (41), the channel is directly contacted with the intermediate layer (41) above, and the shape and the size of the intermediate layer (41) are changed through controlling the deformation of the channel, so that the resistance is changed.
  9. 9. The double-row double-side chain type self-powered wireless monitoring system device based on the freight train wheel set according to claim 1, wherein the power rectifying module (5) comprises a rectifying diode chip (50), a direct current constant voltage source (51), a bypass capacitor (52) and a magnetic field winding output end (53).
  10. 10. The double-row double-side chain type self-energy wireless monitoring method based on the freight train wheel pair is characterized by comprising the following steps of: Step S1, installing the double-row double-side chain type self-energy-supply wireless monitoring system device based on the freight train wheel pair according to any one of claims 1-9 on a rotating axle (10); S2, when the rotating axle (10) starts to rotate, the double-row double-sided chain (17) on the rotating axle (10) also rotates along with the rotating axle, and further drives the turbofan rotor power generation module (2) to perform circular motion, so that stable voltage is provided for the high-efficiency current increasing module and the Bluetooth communication module (3); S3, a front-end signal collection stage; The flexible sensor module (4) converts the deformation of the outer surface of the rotary axle (10) into the change of resistivity based on the piezoresistance sensing principle so as to output a sensing signal which is linearly proportional to the degree of strain, and the sensing signal is subjected to front-end conditioning and gain amplification by the high-efficiency current increasing module (30) so as to improve the signal-to-noise ratio and be compatible with the requirement of a subsequent communication link; S3, a signal transmission and packaging stage; The analog sensing signal output by the front end is converted into discrete signal by an analog-to-digital conversion circuit in the Bluetooth communication module (32) and then is subjected to data framing to construct a data message which is adapted to a link layer protocol; S4, a signal analysis and algorithm processing stage; After receiving the data packet, the host data analysis platform firstly decodes the frame structure to obtain effective strain waveform time sequence data; s5, fault diagnosis and decision output stages; The characteristic attribute vector processed by the algorithm is loaded to a pre-calibrated fault recognition model, the diagnostic model carries out consistency test according to a threshold value method, a pattern recognition classification algorithm and a reference state database, the service state of the rotating axle (10) is evaluated in real time, the service state classification mainly comprises a standard health state, a fatigue crack initiation stage, an overload state and potential structural damage, an evaluation result is dynamically displayed on a data monitoring panel through a visual interface, and if a perceived signal and the standard signal are different, a hierarchy alarm is triggered according to a preset condition.

Description

Double-row double-side chain type self-powered wireless monitoring system device and method based on freight train wheel set Technical Field The invention relates to a double-row double-side chain type self-powered wireless monitoring system device and method based on a freight train wheel set, and belongs to the technical field of rail transit wireless monitoring. Background The rotating shaft can realize the functions of power transmission, motion support, energy conversion and the like, so that the rotating shaft is widely applied to the scenes of energy, traffic, manufacturing and the like. In particular, there are many wheelset axles on freight trains, and capturing kinetic energy of the relative motion of the air fluid near the outside of the wheelset axles to redrive the generator output power and power low power consumption components is considered to be an operational treatment strategy. The energy collection technology at the present stage mainly comprises piezoelectric, electrostatic and electromagnetic methods, however, when the current energy capture technology is used for collecting the energy of the rotating shaft, a plurality of common constraints exist, such as low energy conversion efficiency, limited output power and the like at low rotating speed. It is worth noting that energy harvesting in a rotating environment also requires solving the problems of strong centrifugal force effects, difficult energy and signal transfer, and space and weight limitations. At present, some new rotational energy collectors are proposed in succession, one of which is to construct the rotational energy collector with a cantilever beam and magnetostrictive/piezoelectric (ME) layered transducer structure, the cantilever beam free end of which is designed with a magnetic circuit, and the ME transducer is developed in the air gap region of the magnetic circuit. When the energy harvester is mounted on a body structure rotating about a horizontal axis, the magnetic circuit causes the cantilever beam to vibrate in its lateral direction due to gravity, and the alternating magnetic field caused by the vibration is further applied to the magnetostrictive/piezoelectric layered transducer, thereby causing the ME transducer to generate electrical energy. However, the energy collector is mounted on the section of the rotating shaft by adopting a screw, and cannot be fixed on the surface of the rotating shaft, so that the application range of the energy collector is limited. Therefore, there is a need for an energy harvester that can be conveniently mounted on the surface of a rotating shaft and that has a high collection efficiency. Disclosure of Invention In order to overcome the defects in the prior art, the invention aims to provide a double-row double-side chain type self-powered wireless monitoring system device and method based on a freight train wheel pair. The technical scheme includes that the double-row double-side chain type self-powered wireless monitoring system device based on the freight train wheel set comprises a flexible strain sensor module and a pair of double-row double-side chains, wherein the flexible strain sensor module and the pair of double-row double-side chains are arranged on a rotating axle, a turbofan rotor power generation module, a high-efficiency current increasing module and a Bluetooth communication module are arranged on the double-row double-side chains, power rectification modules are arranged in the high-efficiency current increasing module and the Bluetooth communication module, and alternating current generated by the turbofan rotor power generation module is subjected to alternating current-direct current conversion through the power rectification modules to provide stable voltage for the high-efficiency current increasing module and the Bluetooth communication module. The further technical scheme is that the rotating axle is formed by processing high-quality medium carbon alloy steel materials. According to a further technical scheme, the double-row double-side chain is provided with heterogeneous double-row bent plates. The turbofan rotor power generation module comprises blades, a generator rotating shaft, a coil rotor, a stator housing and a generator diversion base, wherein the generator diversion base is arranged on a double-row double-sided chain, the stator housing is arranged on the generator diversion base, the coil rotor is arranged at the left end of the generator rotating shaft, the blades are arranged at the right end of the generator rotating shaft, the left end of the generator rotating shaft is arranged in the stator housing, and one end of the coil rotor with a permanent magnet assembly is arranged in the stator housing. The high-efficiency flow increasing module and the Bluetooth communication module comprise a high-efficiency flow increasing module, a communication module cover plate, a Bluetooth communication module and a streamline housing arranged on a dou