Abnormality monitoring system, method, device and equipment for brake valve, medium and product

Abstract

The invention relates to the technical field of heavy load locomotives, in particular to an abnormity monitoring system, method, device and equipment of a brake valve, a medium and a product, and the system comprises an acquisition module which is arranged on a top cover of the brake valve and is used for acquiring vibration data of the brake valve; the storage module is connected with the acquisition module and is used for storing the vibration data of the brake valve; the control module is respectively connected with the acquisition module and the storage module and is used for monitoring the vibration data and outputting an alarm signal when the vibration data is abnormal; the device can give an alarm in time when the brake valve vibrates abnormally to remind related personnel to take measures, so that the service safety of the heavy-load locomotive is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of heavy-load locomotives, and in particular to an abnormality monitoring system, method, device, equipment, medium and product for a brake valve. Background Art

[0002] Heavy-load locomotives are widely used in my country's railway freight transportation. The large axle weight design of heavy-load locomotives greatly increases the dynamic impact of the central locomotive, significantly increases the risk of derailment of heavy-load trains, and reduces the riding comfort of drivers. In order to achieve real-time monitoring of train operation safety, scholars at home and abroad have used pressure sensors to monitor and evaluate the pressure of the air brake system, but this method is relatively expensive. There are technical problems in this field that make it difficult to safely and reliably monitor the operating performance of the air brake system of heavy-load trains. Summary of the invention

[0003] The present invention provides a brake valve abnormality monitoring system, method, device, equipment, medium and product, which solves the technical problem that it is difficult to safely and reliably monitor the operating performance of the air brake system of a heavy-load train.

[0004] In a first aspect, the present invention provides an abnormality monitoring system for a brake valve, the system comprising: an acquisition module, arranged on the top cover of the brake valve, for acquiring vibration data of the brake valve; a storage module, connected to the acquisition module, for storing the vibration data of the brake valve; a control module, respectively connected to the acquisition module and the storage module, for monitoring the vibration data, and outputting an alarm signal when the vibration data is abnormal.

[0005] In some embodiments, the acquisition module includes: an acceleration sensor, a waterproof connector, and a protective shell; the acceleration sensor is disposed in the protective shell, and the waterproof connector connects the acceleration sensor to the control module and / or the storage module.

[0006] In some embodiments, the acceleration sensor includes: a first acceleration sensor, which is disposed on a first brake valve top cover of the vehicle; and a second acceleration sensor, which is disposed on a second brake valve top cover of the vehicle.

[0007] In a second aspect, the present invention provides a method for monitoring an abnormality of a brake valve based on an abnormality monitoring system of a brake valve according to any of the above aspects, the method comprising: acquiring vibration data of the brake valve collected by an acquisition module; when at least two vibration data change, determining whether the vibration data exceeds an alarm threshold; if the vibration data exceeds the alarm threshold, outputting an alarm signal.

[0008] In some embodiments, before the step of determining whether the vibration data exceeds the alarm threshold, the alarm threshold corresponding to the top cover of the brake valve is preset, including: collecting normal vibration data of the top cover of the brake valve; and taking the maximum value in the normal vibration data as the alarm threshold corresponding to the top cover of the brake valve.

[0009] In some embodiments, the step of acquiring the vibration data of the brake valve collected by the collection module includes: performing smoothing filtering on the collected raw acceleration data to obtain the vibration data of the brake valve.

[0010] In the third aspect, the present invention provides an abnormality monitoring device for a brake valve based on the abnormality monitoring system for a brake valve according to any of the above aspects, the device comprising: an acquisition module for acquiring vibration data of the brake valve collected by the acquisition module; a judgment module for judging whether the vibration data exceeds an alarm threshold when at least two vibration data change; and an output module for outputting an alarm signal if the vibration data exceeds the alarm threshold.

[0011] In a fourth aspect, the present invention provides a computer device, comprising a memory, a processor and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps of any of the above-mentioned methods for monitoring abnormalities of brake valves.

[0012] In a fifth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the above-mentioned methods for monitoring abnormalities of brake valves.

[0013] In a sixth aspect, the present invention provides a computer program product, comprising a computer program, which, when executed by a processor, implements the steps of any of the above-mentioned methods for monitoring abnormalities of brake valves.

[0014] The present invention provides a brake valve abnormality monitoring system, method, device, equipment, medium and product, wherein the system comprises: an acquisition module, arranged on the top cover of the brake valve, for acquiring vibration data of the brake valve; a storage module, connected to the acquisition module, for storing the vibration data of the brake valve; a control module, respectively connected to the acquisition module and the storage module, for monitoring the vibration data, and outputting an alarm signal when the vibration data is abnormal; and the system can promptly issue an alarm when abnormal vibration occurs in the brake valve, reminding relevant personnel to take measures to ensure the service safety of heavy-load locomotives. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings:

[0016] Figure 1 It is a structural schematic diagram of a brake valve abnormality monitoring system provided in an embodiment of the present application;

[0017] Figure 2 It is a flow chart of a method for monitoring abnormality of a brake valve provided in an embodiment of the present application;

[0018] Figure 3 It is a structural schematic diagram of a brake valve abnormality monitoring device provided in an embodiment of the present application;

[0019] Figure 4 It is a schematic diagram of an abnormal embodiment of a brake valve provided in an embodiment of the present application.

[0020] In the drawings, the same reference numerals are used for the same components, and the drawings are not drawn to scale. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the scheme of the present invention, and to fully understand and implement how the present invention applies technical means to solve technical problems and achieve the corresponding technical effects, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only an embodiment of a part of the present invention, not all of the embodiments. The embodiments of the present invention and the various features in the embodiments can be combined with each other without conflict, and the technical schemes formed are all within the scope of protection of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0022] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0023] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0024] Heavy-load locomotives are widely used in my country's railway freight transportation. The large axle weight design of heavy-load locomotives greatly increases the dynamic impact of the central locomotive, significantly increases the risk of derailment of heavy-load trains, and reduces the riding comfort of drivers. In order to achieve real-time monitoring of train operation safety, scholars at home and abroad have used pressure sensors to monitor and evaluate the pressure of the air brake system, but this method is relatively expensive. There are technical problems in this field that make it difficult to safely and reliably monitor the operating performance of the air brake system of heavy-load trains.

[0025] Hereinafter, the technical solution of the present application will be described in conjunction with specific embodiments.

[0026] Embodiment 1

[0027] Figure 1 Schematic diagram of a brake valve abnormality monitoring system provided in an embodiment of the present application. Figure 1 As shown, in the technical solution of this embodiment, a brake valve abnormality monitoring system is provided, and the system includes: an acquisition module, which is arranged on the top cover of the brake valve, and is used to collect the vibration data of the brake valve; a storage module, which is connected to the acquisition module, and is used to store the vibration data of the brake valve; a control module, which is respectively connected to the acquisition module and the storage module, and is used to monitor the vibration data, and output an alarm signal when the vibration data is abnormal.

[0028] There are many difficulties in the performance monitoring of the air brake system of heavy-duty trains. On the one hand, the heavy-duty locomotive large axle weight design scheme developed to achieve higher economic benefits increases the dynamic impact of the central locomotive, increases the risk of derailment of heavy-duty trains, and reduces the riding comfort of drivers. However, there is still a lack of evaluation methods and monitoring technologies for the vibration characteristics of brake valves for heavy-duty vehicles. On the other hand, traditional acceleration sensors have defects such as small installation space at the brake valve and harsh working environment, complex installation, high cost, and inability to directly observe the vibration state of the brake valve, making it difficult to meet the real-time safety detection requirements of train service. In addition, the method used by domestic and foreign scholars to monitor and evaluate the pressure of the air brake system using pressure sensors is costly, difficult to route, and easy to damage, making it difficult to safely and reliably monitor the operating performance of the air brake system of heavy-duty trains.

[0029] This embodiment solves the technical problem in the following ways. First, an acquisition module is set on the brake valve top cover. The acquisition module can accurately collect the vibration data of the brake valve. For example, it is installed above the 120-type brake valve top cover at one end of the C80-type vehicle. This position can accurately reflect the abnormal vibration characteristics of the brake valve. Secondly, the storage module is connected to the acquisition module to store the monitoring data of the brake valve when the train is running in real time. It has a built-in 1TB solid-state hard drive, and the high-speed write bandwidth can meet the storage and record requirements of 4 vehicles at the same time at a frequency of 512Hz for more than 2 months, ensuring the complete preservation of the data. Finally, the control module is connected to the acquisition module and the storage module respectively. On the one hand, it evaluates and analyzes the working status of the brake valve, and at the same time controls multiple acceleration sensors to collect data; on the other hand, when abnormal vibration data is detected, an alarm signal is output to realize real-time monitoring of the operating performance of the air brake system of heavy-load trains.

[0030] The technical solution of this embodiment has achieved many technical effects. First, by setting the acquisition module on the top cover of the brake valve, the vibration data of the brake valve can be accurately collected, providing a reliable data source for monitoring. Second, the large capacity and high write bandwidth of the storage module ensure long-term data storage, which is convenient for subsequent analysis and query. For example, the stored data can be tracked and analyzed for a long time to understand the vibration law of the brake valve and the performance changes of the air brake system. Third, the real-time monitoring and alarm function of the control module can issue an alarm in time when the brake valve vibrates abnormally, reminding relevant personnel to take measures to ensure the safety of heavy-loaded locomotives in service. For example, when the vibration acceleration of the brake valve exceeds the safety boundary, the control module outputs an alarm signal, and the locomotive can receive the corresponding alarm signal, so that it can be inspected and maintained in time to reduce the risk of accidents.

[0031] Embodiment 2

[0032] On the basis of the above embodiment, the acquisition module includes: an acceleration sensor, a waterproof connector, and a protective shell; the acceleration sensor is arranged in the protective shell, and the waterproof connector connects the acceleration sensor to the control module and / or the storage module.

[0033] The working environment of heavy-load trains is usually very harsh, such as severe weather conditions such as wind, sand, rain, snow, gravel, and vibration during train operation. These factors will have a serious impact on the monitoring equipment installed at the brake valve. Traditional acceleration sensors are easily damaged in such harsh environments and cannot guarantee long-term stable monitoring work, thus affecting the reliability of monitoring the operating performance of the air brake system of heavy-load trains.

[0034] In order to solve the above technical problems, this embodiment integrates a high-precision three-axis acceleration sensor, a waterproof connector and a protective shell into an integrated package design. Among them, the high-precision three-axis acceleration sensor can avoid the problem of insufficient acceleration signal accuracy caused by severe shaking during normal driving of the vehicle; the waterproof connector has a built-in waterproof and dustproof circuit, which can effectively isolate the harsh environment and prevent moisture and dust from entering the sensor and affecting its normal operation; the integrated packaging design can protect the high-precision acceleration sensor from being damaged by wind, sand, rain, snow and gravel, and extend the service life of the sensor. Through this integrated packaging design, the acquisition module can operate stably in harsh working environments, ensuring the accurate acquisition of brake valve vibration data.

[0035] The technical solution of this embodiment brings significant technical effects. First, the integrated packaging design improves the durability and reliability of the acquisition module. During the operation of heavy-load trains, even in the face of harsh environmental conditions such as wind, sand, rain and snow, the acceleration sensor can work normally and will not be damaged or have a decrease in accuracy due to the influence of external factors. Secondly, the use of waterproof connectors ensures that the connection between the sensor and the control module and the storage module is stable and reliable, and the signal transmission will not be interrupted or fail due to the intrusion of moisture and dust. For example, in rainy seasons or when passing through muddy sections, the waterproof connector can effectively protect the connection between the sensor and other modules and ensure stable data transmission. Finally, the service life of the sensor is extended and the equipment maintenance cost is reduced. Since the acquisition module can work stably for a long time in harsh environments, the frequent replacement of sensors due to damage is reduced, maintenance costs are saved, and the continuity and stability of the monitoring of the operating performance of the air brake system of heavy-load trains are also improved.

[0036] Embodiment 3

[0037] On the basis of the above embodiment, the acceleration sensor includes: a first acceleration sensor, which is arranged on a first brake valve top cover of the vehicle; and a second acceleration sensor, which is arranged on a second brake valve top cover of the vehicle.

[0038] In the vibration monitoring of heavy-load trains, each carriage has two brake valves. How to comprehensively and accurately monitor the vibration of the entire train and how to reduce the monitoring error is a key issue. If only one acceleration sensor is used, it cannot fully reflect the vibration of the entire train, and the data of a single sensor has errors, which affects the accurate evaluation of the working status of the brake valve and the performance of the air brake system.

[0039] This embodiment achieves comprehensive monitoring of the vibration of the entire vehicle by setting a first acceleration sensor on the top cover of the first brake valve of the vehicle and a second acceleration sensor on the top cover of the second brake valve of the vehicle. The two acceleration sensors respectively collect vibration data of different brake valves, which can more comprehensively reflect the vibration of the vehicle. At the same time, the monitoring error can be reduced by comprehensively analyzing the data collected by the two sensors. For example, when abnormal data appears in one sensor, it can be verified and corrected through the data of another sensor to improve the accuracy of monitoring. In addition, the on-board control module can simultaneously control at least two acceleration sensors to record synchronously, and record the collected data in real time to the storage device, further ensuring the accuracy and synchronization of the data.

[0040] The technical solution of this embodiment has achieved good technical effects. First, through the setting of two acceleration sensors, comprehensive monitoring of the vibration of the whole vehicle is achieved. During the operation of heavy-load trains, brake valves at different positions may be affected by vibrations to varying degrees. The two sensors can respectively collect vibration data at different positions, providing more comprehensive information for accurately evaluating the performance of the air brake system. Secondly, the monitoring error is reduced. By comprehensively analyzing the data collected by the two sensors, abnormal data that may appear in a single sensor can be effectively eliminated, thereby improving the accuracy of monitoring. For example, when the train passes through a bumpy section, the data of the two sensors can be verified with each other to ensure accurate judgment of the working status of the brake valve. Finally, the synchronous recording function improves the reliability of the data. The on-board control module simultaneously controls the two acceleration sensors for synchronous recording, ensuring the temporal consistency of the data, facilitating subsequent data analysis and processing, and providing reliable data support for accurately evaluating the performance of the air brake system.

[0041] Embodiment 4

[0042] Figure 2 is a flow chart of a brake valve abnormality monitoring method provided in an embodiment of the present application, such as Figure 2 As shown, in the technical solution of this embodiment, a method for monitoring an abnormality of a brake valve based on an abnormality monitoring system of a brake valve according to any of the above embodiments is provided, the method comprising: acquiring vibration data of the brake valve collected by an acquisition module; when at least two vibration data change, determining whether the vibration data exceeds an alarm threshold; if the vibration data exceeds the alarm threshold, outputting an alarm signal.

[0043] During the operation of heavy-load trains, abnormal vibration of the brake valve needs to be detected in time to ensure the safe operation of the train. However, how to accurately alarm based on the collected vibration data is a key technical issue. If the alarm is not timely or accurate, it may cause serious safety accidents; if false alarms occur frequently or even false alarms, it will also affect the normal operation and maintenance efficiency of the train.

[0044] This embodiment solves the technical problem through the following steps. First, the vibration data of the brake valve collected by the acquisition module is obtained. The acquisition module includes equipment such as an acceleration sensor arranged on the brake valve top cover, which can accurately collect the vibration data of the brake valve. Then, when at least two vibration data change, it is determined whether any vibration data exceeds the alarm threshold. The at least two vibration data here can come from the acceleration sensors of the two brake valve top covers of the same car, or from multiple sensors in different cars. By comprehensively judging multiple data, the accuracy of the alarm can be improved. Finally, if any vibration data exceeds the alarm threshold, an alarm signal is output. The alarm signal can be transmitted to the locomotive control system to remind the driver and relevant personnel to take measures.

[0045] The technical solution of this embodiment realizes an effective alarm function and achieves good technical effects. First, through the comprehensive judgment of multiple vibration data, the accuracy of the alarm is improved and the occurrence of false alarms is reduced. During the operation of heavy-load trains, brake valves at different positions may be affected by different vibrations. Considering multiple data at the same time can more comprehensively reflect the operating status of the train and avoid the misjudgment of single data. For example, when the vibration data of a brake valve fluctuates abnormally, it can be judged in combination with the data of other brake valves to determine whether it is a real abnormal situation and reduce the occurrence of false alarms. Secondly, the timely output of the alarm signal helps to ensure the safe operation of the train. Once the abnormal vibration phenomenon of the brake valve is found, the system can quickly issue an alarm, so that the driver and relevant personnel can take timely measures, such as deceleration, parking inspection, etc., to avoid accidents. Finally, the alarm method is combined with the entire brake valve abnormality monitoring system to form a complete safety monitoring system, which provides reliable protection for the operation of heavy-load trains.

[0046] Embodiment 5

[0047] On the basis of the above embodiment, before the step of determining whether the vibration data exceeds the alarm threshold, the alarm threshold corresponding to the top cover of the brake valve is preset, including: collecting normal vibration data of the top cover of the brake valve; and taking the maximum value in the normal vibration data as the alarm threshold corresponding to the top cover of the brake valve.

[0048] When monitoring the abnormal vibration of the brake valve, a reasonable alarm threshold needs to be determined so that an alarm can be issued in time when the vibration data exceeds the threshold. However, how to preset the alarm threshold is a key issue. If the alarm threshold is set too high, some abnormal situations may not be discovered in time; if the alarm threshold is set too low, false alarms may occur frequently, affecting the normal operation of the train.

[0049] This embodiment presets the alarm threshold in the following way. First, collect the normal vibration data of the top cover of the brake valve. During the normal operation of the train, the vibration data of the top cover of the brake valve is collected by means of equipment such as acceleration sensors. These data reflect the vibration of the brake valve under normal working conditions. Then, the maximum value in the normal vibration data is used as the alarm threshold corresponding to the top cover of the brake valve. The alarm threshold set in this way not only takes into account the normal vibration range of the brake valve, but also can issue an alarm in time when abnormal vibration occurs. For example, when the train passes through different road conditions, the vibration of the brake valve will change, but as long as the vibration data does not exceed the maximum value in the normal vibration data, it can be considered normal. When the vibration data exceeds this maximum value, the system will judge it as an abnormal situation and issue an alarm signal.

[0050] The technical solution of this embodiment achieves the following technical effects. First, the reasonable setting of the alarm threshold improves the accuracy of monitoring. By collecting normal vibration data and taking the maximum value as the alarm threshold, it can be ensured that an alarm can be issued in time when abnormal vibration occurs in the brake valve, while avoiding the occurrence of false alarms. For example, when the train is running smoothly, the vibration data generally does not exceed the alarm threshold; when the train passes through a bumpy section or a fault occurs, the vibration data may exceed the alarm threshold, and the system can issue an alarm in time to remind relevant personnel to check and deal with it. Secondly, the method has a certain degree of adaptability. With the operation and use of the train, the vibration of the brake valve may change. By regularly collecting normal vibration data and updating the alarm threshold, the monitoring system can always maintain sensitive and accurate monitoring of abnormal vibration of the brake valve. Finally, the method of presetting the alarm threshold is simple and easy to implement. Combined with the entire brake valve abnormality monitoring system, it can effectively improve the operation safety and reliability of heavy-load trains.

[0051] Embodiment 6

[0052] On the basis of the above embodiment, the step of acquiring the vibration data of the brake valve collected by the collection module includes: performing smoothing filtering on the collected original acceleration data to obtain the vibration data of the brake valve.

[0053] When collecting the vibration data of the brake valve, due to the influence of various factors, there is often noise in the original acceleration data, which will interfere with the accurate judgment of the vibration condition of the brake valve.

[0054] This embodiment solves the technical problem by smoothing and filtering the collected raw acceleration data. The raw data is processed by a filtering algorithm to remove the noise components therein, thereby obtaining smoother and more accurate brake valve vibration data. For example, the raw data can be processed point by point using methods such as moving average filtering and median filtering to remove high-frequency noise and random interference. Through smooth filtering, the quality of vibration data can be effectively improved, making subsequent analysis and judgment more accurate and reliable.

[0055] The technical solution of this embodiment brings about significant technical effects. First, the accuracy of vibration data is improved. After removing the noise from the original data, the vibration data obtained is closer to the actual vibration of the brake valve, and can provide more accurate information for the monitoring system. For example, when analyzing the vibration characteristics of the brake valve, accurate vibration data can help determine whether the brake valve has abnormal vibration, as well as the degree and frequency of abnormal vibration. Secondly, the stability and reliability of the monitoring system are enhanced. Reducing noise interference can reduce the probability of false alarms and improve the stability of the monitoring system. At the same time, accurate vibration data also helps to promptly discover potential problems with the brake valve and improve the reliability of the system. Finally, the vibration data after smoothing and filtering is easier to analyze and process. The data after noise removal is smoother, which is convenient for subsequent statistical analysis, feature extraction and other operations, and provides strong support for accurately evaluating the working status of the brake valve and the performance of the air brake system.

[0056] Embodiment 7

[0057] Figure 3 is a schematic diagram of the structure of a brake valve abnormality monitoring device provided in an embodiment of the present application, such as Figure 3 As shown, in the technical solution of this embodiment, a brake valve abnormality monitoring device based on the brake valve abnormality monitoring system of any one of the above embodiments is provided, and the device includes: an acquisition module, used to acquire the vibration data of the brake valve collected by the acquisition module; a judgment module, used to judge whether the vibration data exceeds the alarm threshold when at least two vibration data change; an output module, used to output an alarm signal if the vibration data exceeds the alarm threshold.

[0058] During the operation of heavy-load trains, abnormal vibration of the brake valve needs to be detected in time to ensure the safe operation of the train. However, how to accurately alarm based on the collected vibration data is a key technical issue. If the alarm is not timely or accurate, it may cause serious safety accidents; if false alarms occur frequently or even false alarms, it will also affect the normal operation and maintenance efficiency of the train.

[0059] This embodiment solves the technical problem through the following steps. First, the vibration data of the brake valve collected by the acquisition module is obtained. The acquisition module includes equipment such as an acceleration sensor arranged on the brake valve top cover, which can accurately collect the vibration data of the brake valve. Then, when at least two vibration data change, it is determined whether any vibration data exceeds the alarm threshold. The at least two vibration data here can come from the acceleration sensors of the two brake valve top covers of the same car, or from multiple sensors in different cars. By comprehensively judging multiple data, the accuracy of the alarm can be improved. Finally, if any vibration data exceeds the alarm threshold, an alarm signal is output. The alarm signal can be transmitted to the locomotive control system to remind the driver and relevant personnel to take measures.

[0060] The technical solution of this embodiment realizes an effective alarm function and achieves good technical effects. First, through the comprehensive judgment of multiple vibration data, the accuracy of the alarm is improved and the occurrence of false alarms is reduced. During the operation of heavy-load trains, brake valves at different positions may be affected by different vibrations. Considering multiple data at the same time can more comprehensively reflect the operating status of the train and avoid the misjudgment of single data. For example, when the vibration data of a brake valve fluctuates abnormally, it can be judged in combination with the data of other brake valves to determine whether it is a real abnormal situation and reduce the occurrence of false alarms. Secondly, the timely output of the alarm signal helps to ensure the safe operation of the train. Once the abnormal vibration phenomenon of the brake valve is found, the system can quickly issue an alarm, so that the driver and relevant personnel can take timely measures, such as deceleration, parking inspection, etc., to avoid accidents. Finally, the alarm method is combined with the entire brake valve abnormality monitoring system to form a complete safety monitoring system, which provides reliable protection for the operation of heavy-load trains.

[0061] Other technical features and beneficial effects of this embodiment correspond to those of the above embodiment and will not be repeated here.

[0062] Embodiment 8

[0063] In the technical solution of this embodiment, a computer device is provided, including a memory, a processor and a computer program stored in the memory, and the processor executes the computer program to implement the steps of any of the brake valve abnormality monitoring methods of the above embodiments.

[0064] In the technical solution of this embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the abnormality monitoring method of the brake valve in any of the above embodiments are implemented.

[0065] In the technical solution of this embodiment, a computer program product is provided, including a computer program, which, when executed by a processor, implements the steps of any of the methods for monitoring abnormalities of brake valves in the above-mentioned embodiments.

[0066] The processor may include, but is not limited to, for example, one or more processors or microprocessors. Each processor may be an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a controller, a microcontroller, a microprocessor or other electronic components to implement the method in the above embodiment. The computer readable storage medium may be implemented by any type of volatile or non-volatile storage device or a combination thereof, and the computer readable storage medium may include, but is not limited to, for example, a random access memory (RAM), a read-only memory (ROM), a flash memory, an EPROM memory, an EEPROM memory, a register, a computer storage medium (such as a hard disk, a floppy disk, a solid state drive, a removable disk, a CDROM, a DVDROM, a Blu-ray disc, etc.).

[0067] The computer-readable storage medium may also store at least one computer executable program / instruction, which may be, for example, a computer-readable instruction. The computer-readable storage medium includes, but is not limited to, for example, a volatile memory and / or a non-volatile memory. The volatile memory may include, for example, a random access memory (RAM) and / or a cache memory (cache), etc. The computer-readable storage medium may include, for example, a read-only memory (ROM), a hard disk, a flash memory, etc. For example, a non-transitory computer-readable storage medium may be connected to a computing device such as a computer, and then, when the computing device runs the computer-readable instructions stored on the computer-readable storage medium, the various methods described above may be performed.

[0068] In addition, the computer device may also include (but not limited to) a data bus, an input / output (I / O) bus, a display, and an input / output device (e.g., a keyboard, a mouse, a speaker, etc.). The processor may communicate with external devices via the I / O bus via a wired or wireless network. In one embodiment, the at least one computer executable instruction may also be compiled into or constitute a software product / computer program product, wherein one or more computer executable instructions are executed by the processor to perform the various functions and / or steps of the method in the embodiments described in the present technology.

[0069] Embodiment 9

[0070] Based on the above embodiments, this embodiment provides an application example.

[0071] The present invention belongs to the field of rail transit technology, and specifically relates to a method for effectively monitoring the vibration of a type 120 brake valve during the operation of a heavy-load vehicle, which can evaluate the performance of an air brake system of a heavy-load locomotive in real time and issue an early warning when the safety boundary is exceeded.

[0072] Heavy-load locomotives are widely used in my country's railway freight transportation due to their significant advantages of large transport capacity and low cost. At present, the large axle weight design scheme for heavy-load locomotives carried out to achieve higher economic benefits has greatly increased the dynamic impact of the central locomotive, which has significantly increased the risk of derailment of heavy-load trains and reduced the riding comfort of drivers. However, there is still a certain gap in the evaluation method and monitoring technology of brake valve vibration characteristics for heavy-load vehicles.

[0073] The small installation space at the brake valve and the harsh working environment are not conducive to the installation of traditional acceleration sensors. The installation method is complex and costly, and the vibration state of the brake valve cannot be directly observed. It is difficult to meet the requirements of real-time safety detection of train service. In addition, there is still a blank in the evaluation criteria for the vibration characteristics of the brake valve of heavy-duty vehicles, and no unified standard has been explored. The abnormal vibration phenomenon of the brake valve is strongly related to the performance of the air brake system.

[0074] In order to achieve the goal of real-time monitoring of train operation safety, domestic and foreign scholars have used pressure sensors to monitor and evaluate the pressure of the air brake system. However, this method is costly, difficult to route and easy to damage during actual use. There are technical problems in this field that make it difficult to safely and reliably monitor the operating performance of the air brake system of heavy-load trains.

[0075] Aiming at the demand for real-time monitoring of the service safety of heavy-loaded trains, the present invention uses accurate and reliable acceleration sensors and evaluation algorithms to simultaneously monitor the vibration characteristics of multiple brake valves of heavy-loaded train vehicles, analyzes and evaluates the mapping relationship between the vibration acceleration and the performance of the air brake system, and outputs the filtered value of the brake valve vibration acceleration in real time. When the safety boundary is exceeded, an early warning is issued to ensure the service safety of heavy-loaded locomotives.

[0076] The purpose of the present invention is to monitor abnormal vibration of a brake valve module in real time when a heavy-load vehicle is running.

[0077] This embodiment provides a 120-type brake valve abnormal vibration phenomenon monitoring system and method, the monitoring system includes an acceleration data acquisition module, a data storage module and a vehicle control module, characterized in that:

[0078] The acceleration data acquisition module including the acceleration sensor is installed above the top cover of the 120-type brake valve at one end of the heavy-duty vehicle. Installing it at this position can accurately reflect the abnormal vibration characteristics of the brake valve. This embodiment takes the C80-type vehicle as an example to collect the stable vibration acceleration data of the 120-type brake valve;

[0079] The data storage module is used to store the monitoring data of the brake valve when the train is running in real time. It has a built-in 1TB solid-state hard drive and a high-speed write bandwidth that can store records for more than 2 months at a 512Hz acquisition frequency for 4 vehicles at the same time;

[0080] The on-board control module is used to evaluate and analyze the working status of the brake valve and control multiple acceleration sensors to collect data;

[0081] The main idea of ​​this monitoring method is to realize the abnormal vibration monitoring function of the brake valve through data filtering algorithm and statistical analysis of the working status of the brake valve, so as to achieve the purpose of safe tracking and monitoring of heavy-load locomotive operation.

[0082] On the basis of the above implementation, a 120-type brake valve abnormal vibration monitoring system and method are also provided. The acceleration data acquisition module integrates a high-precision three-way acceleration sensor, a waterproof connector, and a protective shell into an integrated package design to achieve the technical effects of waterproofing, shockproofing, and wind and sandproofing. The functions of each component are as follows:

[0083] High-precision three-axis acceleration sensor to avoid the problem of insufficient acceleration signal accuracy caused by severe vibration during normal vehicle driving;

[0084] Waterproof connector with built-in waterproof and dustproof circuit to isolate from harsh environment;

[0085] The integrated packaging design protects high-precision acceleration sensors from damage by wind, sand, rain, snow and gravel, thus extending the service life of the sensors.

[0086] Based on the above implementation, a system and method for monitoring abnormal vibration of a type 120 brake valve is also provided, wherein the on-board control module is used to store acceleration signals in real time and transmit key characteristic data to the locomotive, while controlling at least two acceleration sensors to record synchronously, and recording the collected data in real time to a storage device, and the two acceleration sensors are respectively arranged at the top covers of two type 120 brake valves of a heavy-loaded vehicle.

[0087] The vehicle control module supports the threshold monitoring function, which triggers the acceleration sensor to start collecting data when it detects changes in the vibration acceleration signal;

[0088] The vehicle control module can export data in TXT, DAT and other formats;

[0089] The vehicle control module can add a time stamp to the data column to determine the specific time when the abnormal vibration of the brake valve occurs.

[0090] On the basis of the above-mentioned implementation manner, a system and method for monitoring abnormal vibration of a type 120 brake valve are also provided. The data monitoring algorithm collects vibration data of the position before installation, highlights the vibration characteristics of the parking brake valve, and facilitates the subsequent setting of alarm thresholds.

[0091] On the basis of the above-mentioned implementation manner, a 120-type brake valve abnormal vibration monitoring system and method are also provided, which performs smoothing filtering / 0.1s on the collected original acceleration data, and obtains a processed brake valve acceleration signal through the filtering algorithm.

[0092] On the basis of the above-mentioned implementation manner, a system and method for monitoring abnormal vibration of a type 120 brake valve are also provided, which can realize dynamic tracking and positioning of the secondary stop area based on a target tracking algorithm.

[0093] On the basis of the above implementation, a monitoring system and method for abnormal vibration of a 120-type brake valve is also provided. Based on the acceleration signal collected by the acceleration sensor installed on the top cover of the brake valve of a heavy-duty vehicle, the monitoring method is as follows:

[0094] During installation, the integrated packaged acceleration sensor is installed at a specific position of the brake valve, which can accurately collect vibration acceleration signals.

[0095] The installed acceleration sensor is used to collect operating data for a period of time for analysis and evaluation. The alarm threshold is obtained by filtering the collected data. Generally, the maximum vibration acceleration generated during normal operation is sufficient.

[0096] After the vehicle operation is completed, the driver's evaluation of the abnormal vibration of the vehicle is obtained. When the driver's evaluation of the abnormal vibration of the vehicle is a false alarm, the maximum vibration acceleration of the sensor corresponding to the brake valve that generates the false alarm signal during this operation is set as the alarm threshold of the sensor. In this way, the alarm threshold of the sensor of the false alarm can be automatically updated.

[0097] Beneficial effects of the present invention:

[0098] 1. The 120-type brake valve abnormal vibration monitoring system adopted by the present invention integrates the high-precision acceleration sensor, waterproof connector and protective shell into a solid integrated packaging design, which is waterproof and sandproof, suitable for use in harsh environments, and meets the requirements of long-term tracking and monitoring.

[0099] 2. The present invention uses a monitoring method based on vibration acceleration signals to track and analyze the operating performance of the air brake system of a heavy-duty vehicle. Compared with the traditional air brake system performance obtained by further analysis based on air pressure signals, it is a more direct method to observe the working status of the air brake system.

[0100] 3. Aiming at the requirements for safety monitoring of air brake performance of heavy-loaded locomotives, the present invention adopts two acceleration sensors respectively installed on the top covers of two brake valves of a heavy-loaded vehicle to monitor the working status of multiple brake valves in real time so as to comprehensively consider the safety of vehicle operation.

[0101] 4. The video data storage module of the present invention supports data compression storage in .dat mode, ensuring long-term storage without data loss, and can adapt to the storage problem of excessive data volume.

[0102] like Figure 4 The flow chart of the monitoring method of the present invention is shown in FIG. 1 , and the specific steps of the method are now demonstrated through practical application in engineering:

[0103] The first step is to integrate the high-precision acceleration sensor, waterproof connector and protective shell into a package, and then fix it to the brake valve top cover with bolts through a special tooling. This method has been proven to be safe and reliable through tests.

[0104] The second step is to install the data acquisition and processing module and let the data acquisition and processing module run normally with the vehicle for a period of time, perform an operation test on the data acquisition and processing module and obtain a small amount of preliminary acceleration data.

[0105] The third step is to perform preliminary extraction on the collected data, determine the maximum brake valve vibration acceleration matching the vehicle at that location, and set it as the alarm threshold.

[0106] The fourth step is to input the obtained alarm threshold into the monitoring system. When the effective value of the data collected by the acceleration sensor and processed by the data processing module is greater than the threshold, the module will sound an alarm and the locomotive will receive the corresponding alarm signal. Long-term tracking experiments have proved that this monitoring method can effectively monitor the abnormal vibration of the brake valve.

[0107] In the embodiments provided by the present invention, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the above-mentioned module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0108] It should be noted that, in the present invention, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element limited by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0109] Although the embodiments disclosed in the present invention are as above, the above contents are only embodiments adopted for facilitating the understanding of the present invention and are not intended to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the present invention, but the patent protection scope of the present invention shall still be subject to the scope defined in the attached claims.

Claims

1. A brake valve abnormality monitoring system, characterized in that: The system comprises: A collection module, arranged on the top cover of the brake valve, for collecting vibration data of the brake valve; A storage module, connected to the acquisition module, and used to store the vibration data of the brake valve; The control module is connected to the acquisition module and the storage module respectively, and is used to monitor the vibration data and output an alarm signal when the vibration data is abnormal.

2. The abnormality monitoring system for brake valve according to claim 1, characterized in that: The acquisition module includes: an acceleration sensor, a waterproof connector, and a protective shell; The acceleration sensor is arranged in the protective shell, and the waterproof connector connects the acceleration sensor to the control module and / or the storage module.

3. The abnormality monitoring system for brake valve according to claim 1, characterized in that: The acceleration sensor comprises: A first acceleration sensor is disposed on a first brake valve top cover of the vehicle; The second acceleration sensor is arranged on a second brake valve top cover of the vehicle.

4. A method for monitoring an abnormality of a brake valve based on the abnormality monitoring system of a brake valve according to any one of claims 1 to 3, characterized in that: The method comprises: Acquiring vibration data of the brake valve collected by the collection module; When at least two vibration data change, determining whether the vibration data exceeds an alarm threshold; If the vibration data exceeds the alarm threshold, an alarm signal is output.

5. The method for monitoring abnormality of a brake valve according to claim 4, characterized in that: Before the step of determining whether the vibration data exceeds the alarm threshold, the alarm threshold corresponding to the top cover of the brake valve is preset, including: Collect normal vibration data of the top cover of the brake valve; The maximum value in the normal vibration data is used as the alarm threshold corresponding to the top cover of the brake valve.

6. The method for monitoring abnormality of a brake valve according to claim 4, characterized in that: The step of acquiring the vibration data of the brake valve collected by the collection module comprises: The collected raw acceleration data is smoothed and filtered to obtain the vibration data of the brake valve.

7. An abnormality monitoring device for a brake valve based on the abnormality monitoring system for a brake valve according to any one of claims 1 to 3, characterized in that: The device comprises: An acquisition module, used for acquiring the vibration data of the brake valve collected by the acquisition module; A judging module, used for judging whether the vibration data exceeds an alarm threshold when at least two vibration data change; The output module is used to output an alarm signal if the vibration data exceeds an alarm threshold.

8. A computer device comprising a memory, a processor and a computer program stored in the memory, characterized in that: The processor executes the computer program to implement the steps of the brake valve abnormality monitoring method according to any one of claims 4 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the abnormality monitoring method for a brake valve described in any one of claims 4 to 6 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the abnormality monitoring method for a brake valve described in any one of claims 4 to 6 are implemented.

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