TURNTABLE WITH ONLINE MONITORED DYNAMIC POWER, AND RAIL VEHICLE

Abstract

A bogie with online-monitored dynamic power and a rail vehicle are provided. The bogie with online-monitored dynamic power comprises wheels (1), a wireless transmission force measurement assembly (4), a wireless telemetry receiver assembly (5), and a controller. The wireless transmission force measurement assembly (4) measures load changes in the X, Y, and Z directions on the inside of a spoke plate (11) in each wheel (1) and converts load change information into a magnetic signal. The wireless telemetry receiver assembly (5) is wirelessly connected to the wireless transmission force measurement assembly (4) and receives the magnetic signal transmitted by the wireless transmission force measurement assembly (4) and transmits the magnetic signal to the controller.In the bogie with online monitored dynamic power, the wireless telemetry receiver assembly (5) is wirelessly connected to the wireless transmission force measurement assembly (4), so that the effect on the line connection during the vehicle forward movement process can be avoided and the safety and comfort of a vehicle can be monitored in real time during the vehicle forward movement process.

Description

The present application claims priority over Chinese patent application No. 202310984098.8 entitled “BOGIE FOR ONLINE MONITORING OF DYNAMIC PERFORMANCE, AND RAILWAY VEHICLE”, which was filed with the Chinese National Administration of Intellectual Property on August 7, 2023, and is incorporated herein by reference in its entirety. AREA The present disclosure relates to the technical field of railway vehicles and, in particular, to a bogie for online monitoring of dynamic performance. The present disclosure further relates to a railway vehicle with the aforementioned bogie. BACKGROUND Dynamic indices such as safety, stability, and comfort are all essential performance parameters during the operation of a rail vehicle and must be recorded during a vehicle test. Performance parameters of both the vehicle and the track can change during the operation of the rail vehicle. In related technologies, data regarding the vehicle's safety and comfort cannot be collected throughout the vehicle's entire service life. Therefore, there is a need to create a bogie for online monitoring of dynamic performance to monitor the safety and comfort of the vehicle in real time, which is a topic that needs to be addressed by a professional. SUMMARY In light of the foregoing, one objective of the present disclosure is to provide a bogie for the online monitoring of dynamic performance, wherein the bogie can acquire a parameter of the dynamic performance of a vehicle in real time. The safety and comfort of the vehicle can thus be monitored in real time. Another objective of the present disclosure is to create a rail vehicle comprising the aforementioned bogie. Embodiments of the present disclosure provide the following technical solutions that address the above-mentioned issues. According to embodiments of the present disclosure, a bogie is provided for online monitoring of dynamic power. The bogie comprises the following: a wheel, a wireless force measurement assembly, a wireless telemetry assembly, and a controller. The wireless force measurement assembly is designed to detect changes in load along three directions X, Y, and Z on an inner surface of a web plate of the wheel and convert these changes into a magnetic signal. The three directions X, Y, and Z are perpendicular to each other. The wireless telemetry assembly is wirelessly coupled to the wireless force measurement assembly and is configured to: receive the signal transmitted by the wireless force measurement assembly and forward the signal to the controller. The control system is set up to calculate a parameter based on the signal, which represents a dynamic performance of the bogie. In one embodiment, the wireless force measuring assembly comprises one or more strain gauges, a power supply induction coil, and a signal excitation coil. The one or more strain gauges are arranged on the web plate of the wheel and are designed to detect the change in load along the three directions X, Y and Z on the inner surface of the web plate of the wheel in order to output an electrical signal. The signal excitation coil is designed to: receive the electrical signal output by the strain gauge, convert the electrical signal into the signal in magnetic form, and transmit the magnetic signal to the wireless telemetry assembly. The power supply induction coil is designed to supply current to the signal excitation coil. In one embodiment, several strain gauges from the one or the multiple strain gauges are designed to detect the change in load along one of the three directions X, Y and Z, and the multiple strain gauges are arranged at different positions. In one embodiment, the bogie further comprises an axle connected to the wheel, the power supply induction coil and the signal excitation coil are both arranged on the axle, and the strain gauge, the power supply induction coil and the signal excitation coil are each connected to each other by two cables arranged on an outer surface of the axle. In one embodiment, the power supply induction coil and the signal excitation coil are both arranged on the outer surface of the axis and rotate synchronously with the axis. In one embodiment, the wireless telemetry assembly comprises a wireless signal acquisition probe and a wireless power supply probe, and the wireless power supply probe is coupled to a power source to provide an alternating magnetic field. The power supply induction coil is configured to generate a current from the alternating magnetic field, and the wireless signal acquisition probe is configured to receive the signal transmitted by the signal excitation coil and forward the signal to the controller. In one embodiment, the bogie further comprises a bogie frame and a mounting bracket that is rigidly connected to the bogie frame, and the wireless signal acquisition probe and the wireless power supply probe are both attached to the mounting bracket. In one embodiment, the bogie further comprises a first acceleration sensor which is attached to the bogie frame, and the first acceleration sensor is configured to detect an acceleration of the bogie frame and to transmit the detected acceleration to the control system. In one embodiment, the bogie further comprises a second acceleration sensor attached to a wheelset, and the second acceleration sensor is configured to detect an acceleration of the wheelset and transmit the detected acceleration to the control system. According to embodiments of the present disclosure, a rail vehicle is provided. The rail vehicle comprises the bogie according to any of the foregoing embodiments. When the bogie described herein is used, the wireless force measurement unit detects the change in load along three directions (X, Y, and Z) of the wheel, and this change in load is converted into a magnetic signal transmitted to the wireless telemetry unit. The wireless telemetry unit then forwards the signal to the control system. The control system is configured to calculate the dynamic performance parameters of the bogie based on the received signal. This allows the load change along the three directions (X, Y, and Z) of the wheel to be combined with known information about the bogie to obtain parameters such as a derailment coefficient, a wheel load reduction rate, and the lateral wheel-rail force of the vehicle. This enables real-time monitoring of the vehicle's safety and comfort. Furthermore, the wireless telemetry module and the wireless force measurement module are wirelessly coupled in the bogie created here, meaning that the operation of the vehicle does not affect the bogie's wiring. Therefore, real-time monitoring of the vehicle's safety and comfort can be carried out during operation. Furthermore, the rail vehicle comprising the aforementioned bogie is also provided according to embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS The following briefly describes drawings intended for use in embodiments of the present disclosure or in conventional technology, in order to illustrate the representation of technical solutions according to embodiments of the present disclosure or in conventional technology. It is understood that the drawings in the following descriptions represent only some embodiments of the present disclosure and that, from the drawings provided, a person skilled in the art can obtain further drawings without creative effort. Fig. 1 is a schematic structural diagram of a bogie for online monitoring of dynamic power according to an embodiment of the present disclosure. Fig. 2 is a schematic diagram showing a position where a wireless force measurement assembly is mounted in a bogie for online monitoring of dynamic power, as shown in Fig. 1.Figure 3 is a schematic diagram showing a position where a wireless telemetry assembly is mounted in a bogie for online monitoring of dynamic power, as shown in Figure 1. Figure 4 is a top view of a bogie for online monitoring of dynamic power according to an embodiment of the present disclosure. The reference symbols are as follows: 1: Wheel, 11: Web plate, 2: Bogie frame, 21: Mounting bracket, 3: Axle, 4: Wireless force measuring assembly, 41: Strain gauge, 42: Power supply induction coil, 43: Signal excitation coil, 5: Wireless telemetry assembly, 51: Wireless signal acquisition probe, 52: Wireless power supply probe, 6: First accelerometer, 7: Second accelerometer. DETAILED DESCRIPTION OF EXECUTION FORMS The technical solutions in embodiments of the present disclosure are clearly and completely described below in conjunction with the drawings in those embodiments. It is evident that the described embodiments are only some of the embodiments of the present disclosure and not all of them. All other embodiments that a person skilled in the art can obtain from the embodiments in the present disclosure without inventive effort are within the scope of protection of the present disclosure. A key aspect of the present disclosure is the provision of a bogie for the online monitoring of dynamic performance. The bogie can capture a dynamic performance parameter of a vehicle in real time and can thus monitor the vehicle's safety and comfort in real time. Another key aspect of the present disclosure is to provide a rail vehicle that includes the aforementioned bogie for online monitoring of dynamic performance. Reference is made to Fig. 1, Fig. 2, Fig. 3 to Fig. 4. According to one embodiment of the present disclosure, a bogie is provided for online monitoring of dynamic power. The bogie comprises: a wheel 1, a wireless force sensor assembly 4, a wireless telemetry assembly 5, and a controller. The wireless force sensor assembly 4 is configured to: detect a change in load along three directions X, Y, and Z on an inner surface of a web plate 11 of the wheel 1 and convert the change in load into a signal in magnetic form. Any two directions from the three directions X, Y, and Z are perpendicular to each other. The wireless telemetry assembly 5 is wirelessly coupled to the wireless force sensor assembly 4 and configured to: receive the signal transmitted by the wireless force sensor assembly 4 and transmit the signal to the controller.The control system is set up to calculate a parameter based on the received signal, which represents a dynamic performance of the bogie. When the bogie created herein is deployed, the wireless force measurement unit 4 detects the change in load along three directions X, Y, and Z of the wheel, and this change in load is converted into a magnetic signal transmitted to the wireless telemetry unit 5. The wireless telemetry unit 5 forwards the signal to the controller. The controller is configured to calculate the dynamic performance parameter of the bogie based on the received signal. This allows the load change in the three directions X, Y, and Z of the wheel 1 to be combined with known information about the bogie to obtain parameters such as a derailment coefficient, a wheel load reduction rate, and a lateral wheel-rail force of the vehicle. Thus, the safety and comfort of the vehicle can be monitored in real time. As far as the calculation is concerned, the way in which parameters such as the derailment coefficient, the wheel load reduction rate and the lateral wheel-rail force of the vehicle can be obtained according to the change in the stress on wheel 1 along the three directions X, Y and Z, as well as related information about the bogie, such as the weight and friction of the bogie, can be found in conventional techniques and is therefore not explained in detail here. The three directions mentioned, X, Y, and Z, can refer to a vertical direction, a horizontal direction, and a direction perpendicular to a plane parallel to both the vertical and horizontal directions. Furthermore, depending on the actual situation, any three other mutually perpendicular directions can be used, although the details of these are not described here. In the bogie provided herein, the wireless telemetry module 5 and the wireless force measurement module 4 are wirelessly coupled, and thus the operation of the vehicle has no influence on the bogie's wiring. Therefore, real-time monitoring of the vehicle's safety and comfort can be carried out during operation. In one embodiment, the wireless force measurement assembly 4 comprises a strain gauge 41, a power supply induction coil 42, and a signal excitation coil 43. The strain gauge 41 is arranged on the web plate 11 of the wheel 1. The strain gauge 41 is configured to detect changes in load along the three directions X, Y, and Z on the inner surface of the web plate 11 of the wheel 1 and output an electrical signal accordingly. The signal excitation coil 43 is configured to receive the electrical signal output by the strain gauge 41, convert the electrical signal into a signal in magnetic form, and transmit the signal to the wireless telemetry assembly 5. The power supply induction coil 42 is configured to supply energy to the signal excitation coil 43. One mounting position of the strain gauge 41 can be as shown in Fig. 2. In one embodiment, there are several strain gauges 41 for detecting the change in load along one of the three directions X, Y, and Z, such that the measurement is more accurate. The multiple strain gauges 41 are arranged at different positions. In practice, maximum and / or minimum values ​​from the measurements of several strain gauges 41 can be excluded, and the remaining measurements are averaged. Thus, the influence of inaccurate individual measurements can be avoided. In practice, cables are connected between the strain gauge 41 and the power supply induction coil 42, between the power supply induction coil 42 and the signal excitation coil 43, and between the signal excitation coil 43 and the strain gauge 41. Furthermore, the bogie can also include an axle 3 connected to the wheel 1, and the power supply induction coil 42 and the signal excitation coil 43 are both arranged on the axle 3. Two of each strain gauge 41, power supply induction coil 42, and signal excitation coil 43 can be connected to each other via a cable arranged on an outer surface of the axle 3. As shown in Fig. 2, the strain gauge 41 is arranged on the inner surface of the web plate 11 of the wheel 1, and the power supply induction coil 42 and the signal excitation coil 43 are both arranged on the axle 3 and can be rotated together with the axle 3. The strain gauge 41, the power supply induction coil 42, and the signal excitation coil 43 can each be connected in pairs via a cable located on an outer surface of the axle 3. In this case, the cable is prevented from passing through the web plate 11 of the wheel 1 and the axle 3, thus eliminating the need for through-holes, which facilitates the operation of the bogie. The power supply induction coil 42 and the signal excitation coil 43 can both be located on the outer surface of the axle 3 and rotate synchronously with the axle 3. As shown in Fig. 3, the wireless telemetry assembly 5 can comprise a wireless signal acquisition probe 51 and a wireless power supply probe 52. The wireless induction probe is connected to a power source to provide an alternating magnetic field. The power supply induction coil 42 is configured to generate a current from the alternating magnetic field. The wireless signal acquisition probe 51 is configured to receive the signal in magnetic form from the signal excitation coil 43 and transmit the signal to the controller. As shown in Fig. 1, the bogie for online monitoring of dynamic power can further comprise a bogie frame 2 and a mounting bracket 21, which is rigidly connected to the bogie frame 2. The wireless signal acquisition probe 51 and the wireless power supply probe 52 are both attached to the mounting bracket 21. To generate the alternating magnetic field, the wireless power supply probe 52 can be connected to a 110 V power supply on a rail vehicle. Regardless of whether the axle 3 is rotating or not, the magnetic field penetrating the power supply induction coil 42 located on the axle 3 changes because the magnetic field is alternating. Therefore, current is generated in the power supply induction coil 42 and transferred to the signal excitation coil 43, thus energizing the signal excitation coil 43. In contrast to conventional technology, no cable connection is required between the wireless power supply probe 52 and the power supply induction coil 42, thus eliminating the need to consider the influence of the axis 3's rotation on the wiring during vehicle operation. Furthermore, regardless of whether the axis 3 is rotating or not, a current can be generated in the power supply induction coil 42 as long as the wireless power supply probe 52 is connected to the power supply and generating the alternating magnetic field. This enables real-time online monitoring of the vehicle's dynamic performance, both in driving and stationary states. In practice, the strain gauge 41 is designed to detect changes in load in the three directions X, Y, and Z on the inner surface of the web plate 11 of the wheel 1 and outputs the electrical signal to the signal excitation coil 43. The power supply induction coil 42 supplies current to the signal excitation coil 43. The signal excitation coil 43 converts the electrical signal into a magnetic signal and transmits the magnetic signal to the wireless signal acquisition probe 51. The signal excitation coil 43 and the wireless signal acquisition probe 51 are wirelessly coupled, enabling monitoring during vehicle operation. In one embodiment, the bogie for online monitoring of dynamic performance further comprises a first acceleration sensor 6, which is attached to the bogie frame 2. The first acceleration sensor 6 is configured to detect an acceleration of the bogie frame 2 and transmit the detected acceleration to the control system. In another embodiment, the bogie further comprises a second acceleration sensor 7, which is attached to a wheelset, and the second acceleration sensor 7 is configured to detect an acceleration of the wheelset and transmit the detected acceleration to the control system. In practice, the acceleration of the bogie frame 2 is detected by the first acceleration sensor 6, and the acceleration of the wheelset is detected by the second acceleration sensor 7.This allows the wheel-rail excitation to be detected, and any irregularity in the vibration acceleration can reflect an irregularity in the rail or wheel 1. In addition to the aforementioned bogie for online monitoring of dynamic performance, embodiments of the present disclosure also provide a rail vehicle comprising the aforementioned bogie. The structure of other parts of the rail vehicle may involve conventional techniques and is not illustrated herein. The embodiments of the present disclosure are described progressively, and for each embodiment the emphasis is on the difference from other embodiments. Therefore, one embodiment may refer to other embodiments with respect to the same or similar parts. Every combination of the embodiments provided herein falls within the scope of protection of the present disclosure and is not listed individually here. The foregoing details the bogie for online monitoring of dynamic performance and the rail vehicle according to embodiments of the present disclosure. The principle and implementation of the present disclosure are described herein with reference to specific embodiments, and the description of the above embodiments is intended only to facilitate understanding of the method and the core idea of ​​the present disclosure. A person skilled in the art may make several improvements and modifications to the embodiments of the present disclosure without departing from the principle of the present disclosure, and these improvements and modifications also fall within the scope of protection of the claims of the present disclosure. QUOTES INCLUDED IN THE DESCRIPTION This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature CN 202310984098.8

[0001]

Claims

A bogie for online monitoring of dynamic performance, comprising: a wheel (1), a wireless force sensing assembly (4), a wireless telemetry assembly (5), and a controller, wherein: the wireless force sensing assembly (4) is configured to: detect a change in load along three directions X, Y, and Z on an inner surface of a web plate (11) of the wheel (1) and convert the change in load into a signal in magnetic form, and the three directions X, Y, and Z are perpendicular to each other; the wireless telemetry assembly (5) is wirelessly coupled to the wireless force sensing assembly (4) and is configured to: receive the signal transmitted by the wireless force sensing assembly (4) and forward the signal to the controller; and the controller is configured to calculate a parameter, in accordance with the signal, that represents a dynamic performance of the bogie. Bogie according to claim 1, wherein: the wireless force measurement assembly (4) comprises one or more strain gauges (41), a power supply induction coil (42) and a signal excitation coil (43), the one or more strain gauges (41) are arranged on the web plate (11) of the wheel (1) and are configured to detect the change in load along the three directions X, Y and Z on the inner surface of the web plate (11) of the wheel (1) in order to output an electrical signal, the signal excitation coil (43) is configured to: receive the electrical signal output by the strain gauge (41), convert the electrical signal into the signal in magnetic form and transmit the signal to the wireless telemetry assembly (5), and the power supply induction coil (42) is configured to supply current to the signal excitation coil (43). Bogie according to claim 2, wherein several strain gauges (41) are formed from the one or the several strain gauges (41) such that they detect the change in load along one of the three directions X, Y and Z, and the several strain gauges (41) are arranged at different positions. Bogie according to claim 2, further comprising an axle (3) which is connected to the wheel (1), wherein: the power supply induction coil (42) and the signal excitation coil (43) are both arranged on the axle (3) and two cables each are connected to each other from the strain gauge (41), the power supply induction coil (42) and the signal excitation coil (43) via a cable arranged on an outer surface of the axle (3). Bogie according to claim 4, wherein the power supply induction coil (42) and the signal excitation coil (43) are both arranged on the outer surface of the axle (3) and rotate synchronously with the axle (3). Bogie according to claim 2, wherein: the wireless telemetry assembly (5) comprises a wireless signal acquisition probe (51) and a wireless power supply probe (52), and the wireless induction probe is coupled to a power source to provide an alternating magnetic field, and the power supply induction coil (42) is configured to generate a current from the alternating magnetic field, and the wireless signal acquisition probe (51) is configured to receive the signal transmitted by the signal excitation coil (43) and forward the signal to the control system. Bogie according to claim 6, further comprising: a bogie frame (2) and a mounting bracket (21) which is fixedly connected to the bogie frame (2), wherein the wireless signal acquisition probe (51) and the wireless power supply probe (52) are both attached to the mounting bracket (21). Bogie according to claim 7, further comprising a first acceleration sensor (6) which is attached to the bogie frame (2), wherein: the first acceleration sensor (6) is configured to detect an acceleration of the bogie frame (2) and transmits the detected acceleration of the bogie frame (2) to the control system. Bogie according to one of claims 1 to 8, further comprising a second acceleration sensor (7) attached to a wheelset, wherein: the second acceleration sensor (7) is configured to detect an acceleration of the wheelset and transmit the detected acceleration of the wheelset to the control system. Rail vehicle comprising: the bogie according to one of claims 1 to 9.

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