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CN110887523A - Rail vehicle axle box monitoring system based on LabVIEW - Google Patents

Rail vehicle axle box monitoring system based on LabVIEW Download PDF

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Publication number
CN110887523A
CN110887523A CN201911144106.8A CN201911144106A CN110887523A CN 110887523 A CN110887523 A CN 110887523A CN 201911144106 A CN201911144106 A CN 201911144106A CN 110887523 A CN110887523 A CN 110887523A
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signal
rail vehicle
module
axle box
standard signal
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刘若晨
王益民
刘舒沁
张焱
李广军
冀雯宇
杨艺
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Jiangsu University of Technology
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Abstract

本发明提供了一种基于LabVIEW的轨道车辆轴箱监测系统,包括:轨道车辆轴箱、静电传感器、振动传感器、温度传感器、信号调理单元、数据采集卡和计算机,用于对轨道车辆轴箱静电信号、振动信号、温度信号进行实时测量与分析,以完成对轨道车辆轴箱性能的状态监测评估,本发明提供的基于LabVIEW的轨道车辆轴箱监测系统,具有综合处理分析信号的能力,可实时准确的监测轨道车辆轴箱状态。

Figure 201911144106

The invention provides a rail vehicle axle box monitoring system based on LabVIEW, comprising: rail vehicle axle box, electrostatic sensor, vibration sensor, temperature sensor, signal conditioning unit, data acquisition card and computer, which are used for static electricity monitoring of rail vehicle axle box. Signal, vibration signal and temperature signal are measured and analyzed in real time, so as to complete the state monitoring and evaluation of the axle box performance of the rail vehicle. The LabVIEW-based rail vehicle axle box monitoring system provided by the present invention has the ability to comprehensively process and analyze the signal, and can realize real-time monitoring and evaluation of the rail vehicle axle box. Accurately monitor the status of rail vehicle axle boxes.

Figure 201911144106

Description

一种基于LabVIEW的轨道车辆轴箱监测系统A LabVIEW-based Axlebox Monitoring System for Rail Vehicles

技术领域technical field

本发明涉及轨道车辆状态监测技术领域,尤其涉及一种基于LabVIEW的轨道车辆轴箱监测系统。The invention relates to the technical field of rail vehicle state monitoring, in particular to a LabVIEW-based rail vehicle axle box monitoring system.

背景技术Background technique

21世纪我国大规模建设高速铁路,大规模运营高速列车标志着我国进入了高铁时代,随着高铁、动车等轨道列车的不断提速,轨道车辆运行安全问题成为我国高铁时代面临的首要问题。轴箱作为轨道车辆重要的零部件之一,其状态稳定性决定了轨道车辆运行的安全性。In the 21st century, my country's large-scale construction of high-speed railways and large-scale operation of high-speed trains marks my country's entry into the era of high-speed railways. As one of the important parts of rail vehicle, axle box, its state stability determines the safety of rail vehicle operation.

轨道车辆轴箱状态监测困难,为保障其运行安全性,相关工作人员要定期对其进行检修,导致不必要地浪费人力物力,且不能及时发现轴箱故障。而传感器技术的发展推动了轨道车辆轴箱状态监测技术的进步,但迫切需要能够对轴箱状态进行在线实时监测,因此,提供一种可以在线实时监测轨道车辆轴箱的方案成为亟待解决的问题。It is difficult to monitor the status of the axle box of rail vehicles. In order to ensure the safety of its operation, the relevant staff must regularly overhaul it, resulting in unnecessary waste of manpower and material resources, and failure to detect the fault of the axle box in time. The development of sensor technology has promoted the progress of the state monitoring technology of rail vehicle axle box, but there is an urgent need to be able to monitor the status of the axle box online in real time. Therefore, it is an urgent problem to provide a solution that can monitor the rail vehicle axle box in real time online. .

发明内容SUMMARY OF THE INVENTION

本发明旨在提供一种克服上述问题之一或者至少部分地解决上述任一问题的基于LabVIEW的轨道车辆轴箱监测系统。The present invention aims to provide a LabVIEW-based rail vehicle axle box monitoring system that overcomes one of the above problems or at least partially solves any of the above problems.

为达到上述目的,本发明的技术方案具体是这样实现的:In order to achieve the above object, the technical scheme of the present invention is specifically realized in this way:

本发明提供了一种基于LabVIEW的轨道车辆轴箱监测系统,包括:轨道车辆轴箱、静电传感器、振动传感器、温度传感器、信号调理单元、数据采集卡和计算机;其中:静电传感器、振动传感器和温度传感器安装于轨道车辆轴箱底部;静电传感器的输出端、振动传感器的输出端和温度传感器的输出端分别与信号调理单元的输入端连接;信号调理单元的输出端与数据采集卡的输入端连接;数据采集卡的输出端与计算机连接;静电传感器检测轨道车辆轴箱轴承磨损产生的静电水平,并将第一检测信号发送至信号调理单元;振动传感器检测轨道车辆轴箱振动信号的大小,并将第二检测信号发送至信号调理单元;温度传感器检测轨道车辆轴箱内轴与轴承摩擦产生的温度高低,并将第三检测信号发送至信号调理单元;信号调理单元接收第一检测信号、第二检测信号和第三检测信号,将第一检测信号、第二检测信号和第三检测信号进行放大和滤波处理转换为第一标准信号、第二标准信号和第三标准信号,并将第一标准信号、第二标准信号和第三标准信号发送至数据采集卡;数据采集卡采集第一标准信号、第二标准信号和第三标准信号,将第一标准信号、第二标准信号和第三标准信号发送至计算机;计算机设置LabVIEW监控软件,对第一标准信号、第二标准信号和第三标准信号进行监控,在第一标准信号、第二标准信号和/或第三标准信号不符合预设规则的情况下,进行提示。The invention provides a rail vehicle axle box monitoring system based on LabVIEW, comprising: rail vehicle axle box, electrostatic sensor, vibration sensor, temperature sensor, signal conditioning unit, data acquisition card and computer; wherein: electrostatic sensor, vibration sensor and The temperature sensor is installed at the bottom of the axle box of the rail vehicle; the output end of the electrostatic sensor, the output end of the vibration sensor and the output end of the temperature sensor are respectively connected with the input end of the signal conditioning unit; the output end of the signal conditioning unit is connected with the input end of the data acquisition card The output end of the data acquisition card is connected to the computer; the electrostatic sensor detects the static electricity level generated by the wear of the axle box bearing of the rail vehicle, and sends the first detection signal to the signal conditioning unit; the vibration sensor detects the magnitude of the vibration signal of the axle box of the rail vehicle, and send the second detection signal to the signal conditioning unit; the temperature sensor detects the temperature generated by the friction between the axle and the bearing in the axle box of the rail vehicle, and sends the third detection signal to the signal conditioning unit; the signal conditioning unit receives the first detection signal, For the second detection signal and the third detection signal, the first detection signal, the second detection signal and the third detection signal are amplified and filtered into the first standard signal, the second standard signal and the third standard signal, and the first standard signal, the second standard signal and the third standard signal are converted into A standard signal, a second standard signal and a third standard signal are sent to the data acquisition card; the data acquisition card collects the first standard signal, the second standard signal and the third standard signal, and converts the first standard signal, the second standard signal and the third standard signal The three standard signals are sent to the computer; the computer sets the LabVIEW monitoring software to monitor the first standard signal, the second standard signal and the third standard signal, if the first standard signal, the second standard signal and/or the third standard signal do not meet the In the case of preset rules, prompts are given.

其中,轨道车辆轴箱底部开设三个孔,静电传感器、振动传感器和温度传感器的感应探头分别从孔进入轨道车辆轴箱且接近轴承。Among them, three holes are provided at the bottom of the axle box of the rail vehicle, and the sensing probes of the electrostatic sensor, the vibration sensor and the temperature sensor respectively enter the axle box of the rail vehicle through the holes and approach the bearing.

其中,静电传感器、振动传感器和温度传感器平行安装。Among them, the electrostatic sensor, vibration sensor and temperature sensor are installed in parallel.

其中,计算机包括:前面板和程序模块;其中:前面板用于进行信息显示;程序模块用于进行数据处理和分析。The computer includes: a front panel and a program module; wherein: the front panel is used for information display; the program module is used for data processing and analysis.

其中,前面板包括:数据显示模块、性能显示模块和超阈值报警模块;程序模块包括:数据存储模块、信号分析模块和性能评估模块;其中:数据显示模块、性能显示模块、超阈值报警模块、数据存储模块、信号分析模块和性能评估模块;其中:数据存储模块,用于存储第一标准信号所携带的数据、第二标准信号所携带的数据和第三标准信号所携带的数据;信号分析模块,用于对数据存储模块存储的数据进行分析,得到分析结果;性能评估模块,用于根据信号分析模块得到的分析结果对轨道车辆轴箱性能进行评估;数据显示模块,用于显示数据存储模块存储的数据;性能显示模块,用于显示性能评估模块评估的轨道车辆轴箱性能状况;超阈值报警模块,用于在信号分析模块得到的分析结果超过预设阈值时,进行报警。The front panel includes: a data display module, a performance display module and an over-threshold alarm module; the program module includes: a data storage module, a signal analysis module and a performance evaluation module; wherein: a data display module, a performance display module, an over-threshold alarm module, A data storage module, a signal analysis module and a performance evaluation module; wherein: a data storage module for storing the data carried by the first standard signal, the data carried by the second standard signal and the data carried by the third standard signal; signal analysis The module is used to analyze the data stored in the data storage module to obtain the analysis results; the performance evaluation module is used to evaluate the performance of the rail vehicle axle box according to the analysis results obtained by the signal analysis module; the data display module is used to display the data storage The data stored in the module; the performance display module, which is used to display the performance status of the rail vehicle axle box evaluated by the performance evaluation module; the over-threshold alarm module is used to alarm when the analysis result obtained by the signal analysis module exceeds the preset threshold.

由此可见,本发明实施例提供的基于LabVIEW的轨道车辆轴箱监测系统,通过传感器技术与LabVIEW软件开发平台结合设计得到,该系统可在线实时监测轴箱性能状态,相关工作人员可根据在线监测的信息反馈及时对轨道车辆轴箱进行实情维修,避免故障的发生,对轨道车辆运行安全性具有重要意义。It can be seen that the LabVIEW-based rail vehicle axle box monitoring system provided by the embodiment of the present invention is designed through the combination of sensor technology and the LabVIEW software development platform. The system can monitor the performance status of the axle box online in real time, and relevant staff can The timely maintenance of the rail vehicle axle box to avoid the occurrence of failure is of great significance to the safety of rail vehicle operation.

附图说明Description of drawings

为了更清楚地说明本发明实施例的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,下面描述中的附图仅是本发明的一些实施例,对于本领域的普通技术人员来讲,在不付出创造性劳动的前提下,可以根据这些附图获得其他附图。In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. The drawings in the following description are only some For those of ordinary skill, other drawings can be obtained from these drawings without any creative effort.

图1为本发明实施例提供的基于LabVIEW的轨道车辆轴箱监测系统结构示意图;1 is a schematic structural diagram of a LabVIEW-based rail vehicle axlebox monitoring system provided by an embodiment of the present invention;

图2为本发明实施例提供的轨道车辆轮对轴箱结构示意图;2 is a schematic structural diagram of a rail vehicle wheelset axle box provided by an embodiment of the present invention;

图3为本发明实施例提供传感器安装位置示意图;3 is a schematic diagram of a sensor installation position according to an embodiment of the present invention;

图4为本发明实施例提供的基于LabVIEW的轨道车辆轴箱监测系统的计算机结构示意图。FIG. 4 is a schematic diagram of a computer structure of a LabVIEW-based rail vehicle axle box monitoring system provided by an embodiment of the present invention.

具体实施方式Detailed ways

下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例,然而应当理解,可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反,提供这些实施例是为了能够更透彻地理解本公开,并且能够将本公开的范围完整的传达给本领域的技术人员。Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be more thoroughly understood, and will fully convey the scope of the present disclosure to those skilled in the art.

图1示出了本发明实施例提供的基于LabVIEW的轨道车辆轴箱监测系统结构示意图,参见图1,本发明实施例提供的基于LabVIEW的轨道车辆轴箱监测系统,包括:1 shows a schematic structural diagram of a LabVIEW-based rail vehicle axlebox monitoring system provided by an embodiment of the present invention. Referring to FIG. 1, the LabVIEW-based rail vehicle axlebox monitoring system provided by an embodiment of the present invention includes:

轨道车辆轴箱、静电传感器、振动传感器、温度传感器、信号调理单元、数据采集卡和计算机;其中:Rail vehicle axle boxes, electrostatic sensors, vibration sensors, temperature sensors, signal conditioning units, data acquisition cards and computers; of which:

静电传感器、振动传感器和温度传感器安装于轨道车辆轴箱底部;The electrostatic sensor, vibration sensor and temperature sensor are installed at the bottom of the axle box of the rail vehicle;

静电传感器的输出端、振动传感器的输出端和温度传感器的输出端分别与信号调理单元的输入端连接;The output end of the electrostatic sensor, the output end of the vibration sensor and the output end of the temperature sensor are respectively connected with the input end of the signal conditioning unit;

信号调理单元的输出端与数据采集卡的输入端连接;The output end of the signal conditioning unit is connected with the input end of the data acquisition card;

数据采集卡的输出端与计算机连接;The output end of the data acquisition card is connected with the computer;

静电传感器检测轨道车辆轴箱轴承磨损产生的静电水平,并将第一检测信号发送至信号调理单元;The electrostatic sensor detects the static level generated by the wear of the axle box bearing of the rail vehicle, and sends the first detection signal to the signal conditioning unit;

振动传感器检测轨道车辆轴箱振动信号的大小,并将第二检测信号发送至信号调理单元;The vibration sensor detects the magnitude of the vibration signal of the axle box of the rail vehicle, and sends the second detection signal to the signal conditioning unit;

温度传感器检测轨道车辆轴箱内轴与轴承摩擦产生的温度高低,并将第三检测信号发送至信号调理单元;The temperature sensor detects the temperature generated by the friction between the axle and the bearing in the axle box of the rail vehicle, and sends a third detection signal to the signal conditioning unit;

信号调理单元接收第一检测信号、第二检测信号和第三检测信号,将第一检测信号、第二检测信号和第三检测信号进行放大和滤波处理转换为第一标准信号、第二标准信号和第三标准信号,并将第一标准信号、第二标准信号和第三标准信号发送至数据采集卡;The signal conditioning unit receives the first detection signal, the second detection signal and the third detection signal, and converts the first detection signal, the second detection signal and the third detection signal into the first standard signal and the second standard signal by amplifying and filtering processing. and the third standard signal, and send the first standard signal, the second standard signal and the third standard signal to the data acquisition card;

数据采集卡采集第一标准信号、第二标准信号和第三标准信号,将第一标准信号、第二标准信号和第三标准信号发送至计算机;The data acquisition card collects the first standard signal, the second standard signal and the third standard signal, and sends the first standard signal, the second standard signal and the third standard signal to the computer;

计算机设置LabVIEW监控软件,对第一标准信号、第二标准信号和第三标准信号进行监控,在第一标准信号、第二标准信号和/或第三标准信号不符合预设规则的情况下,进行提示。The computer sets LabVIEW monitoring software to monitor the first standard signal, the second standard signal and the third standard signal. prompt.

其中,参见图2,本发明实施例提供的轨道车辆轮对轴箱包括轴箱1、轮对2和轴3。本发明实施例提供的基于LabVIEW的轨道车辆轴箱监测系统是对轴箱1进行的监测,监测轴箱1中的轴承状态。Wherein, referring to FIG. 2 , the rail vehicle wheelset axle box provided by the embodiment of the present invention includes an axle box 1 , a wheel set 2 and an axle 3 . The LabVIEW-based rail vehicle axle box monitoring system provided by the embodiment of the present invention monitors the axle box 1 and monitors the state of the bearings in the axle box 1 .

参见图3,本发明实施例提供的LabVIEW的轨道车辆轴箱监测系统中包含的三个传感器,分别为振动传感器11,静电传感器12,温度传感器13,利用该三个传感器对轴箱进行综合状态监测。Referring to FIG. 3, the three sensors included in the LabVIEW rail vehicle axle box monitoring system provided by the embodiment of the present invention are respectively a vibration sensor 11, an electrostatic sensor 12, and a temperature sensor 13, and the three sensors are used to comprehensively state the axle box. monitor.

作为本发明实施例的一个可选实施方式,轨道车辆轴箱底部开设三个孔,静电传感器、振动传感器和温度传感器的感应探头分别从孔进入轨道车辆轴箱且接近轴承。由于对轴箱的监测主要是针对其内部的轴承进行监测,且由于轴承安装于轴箱内部,传感器不方便直接安装,因此,综合分析后,在不影响轴箱基本功能及寿命的前提下,在轴箱底部开三个孔,将三个传感器的感应探头分别安装于轴承附近,提高检测信号的准确度。优选的,静电传感器、振动传感器和温度传感器平行安装。As an optional implementation of the embodiment of the present invention, three holes are provided at the bottom of the rail vehicle axle box, and the sensing probes of the electrostatic sensor, the vibration sensor and the temperature sensor respectively enter the rail vehicle axle box through the holes and approach the bearing. Since the monitoring of the axle box is mainly aimed at monitoring the bearing inside, and since the bearing is installed inside the axle box, it is not convenient to install the sensor directly. Therefore, after comprehensive analysis, under the premise of not affecting the basic function and life of the axle box, Three holes are opened at the bottom of the axle box, and the sensing probes of the three sensors are respectively installed near the bearing to improve the accuracy of the detection signal. Preferably, the electrostatic sensor, the vibration sensor and the temperature sensor are installed in parallel.

安装于轴箱底部的静电传感器、振动传感器和温度传感器分别检测轴箱内部的静电水平、振动幅值和温度高低,并将检测信号发送至信号调理单元;信号调理单元具有将各传感器检测到的信号进行放大和滤波处理并将其转换为标准信号的功能,由数据采集卡对转换过的信号进行采集,之后传输至计算机。The electrostatic sensor, vibration sensor and temperature sensor installed at the bottom of the axle box respectively detect the static level, vibration amplitude and temperature inside the axle box, and send the detection signal to the signal conditioning unit; The function of amplifying and filtering the signal and converting it into a standard signal, the converted signal is collected by the data acquisition card, and then transmitted to the computer.

数据采集卡可以采用美国国家仪器公司的产品,可以根据需要选择不同型号接口的数据采集卡。The data acquisition card can use the products of National Instruments, and you can choose data acquisition cards with different types of interfaces according to your needs.

通过传感器对轨道车辆轴箱静电信号、振动信号、温度信号进行实时测量,将能表征轴箱性能状态的信号传输给计算机,通过计算机对轨道车辆轴箱静电信号、振动信号、温度信号进行实时分析,以完成对轨道车辆轴箱性能的状态监测评估,使得本发明实施例提供的基于LabVIEW的轨道车辆轴箱监测系统具备综合处理分析信号的能力,可实时准确的监测轨道车辆轴箱状态。The sensors are used to measure the static signal, vibration signal and temperature signal of the axle box of the rail vehicle in real time, and the signal that can characterize the performance state of the axle box is transmitted to the computer, and the static signal, vibration signal and temperature signal of the axle box of the rail vehicle are analyzed in real time through the computer. , so as to complete the state monitoring and evaluation of the rail vehicle axle box performance, so that the LabVIEW-based rail vehicle axle box monitoring system provided by the embodiment of the present invention has the capability of comprehensively processing and analyzing signals, and can accurately monitor the rail vehicle axle box status in real time.

作为本发明实施例的一个可选实施方式,参见图4,计算机具有针对静电传感器、振动传感器和温度传感器检测到的不同信号进行监测的LabVIEW软件监测系统。As an optional implementation of the embodiment of the present invention, referring to FIG. 4 , the computer has a LabVIEW software monitoring system for monitoring different signals detected by the electrostatic sensor, the vibration sensor and the temperature sensor.

其中,计算机包括:前面板和程序模块(LabVIEW软件监测系统);其中:前面板用于进行信息显示;程序模块用于进行数据处理和分析。Wherein, the computer includes: a front panel and a program module (LabVIEW software monitoring system); wherein: the front panel is used for information display; the program module is used for data processing and analysis.

优选的,前面板包括:数据显示模块、性能显示模块和超阈值报警模块;程序模块包括:数据存储模块、信号分析模块和性能评估模块;其中:Preferably, the front panel includes: a data display module, a performance display module and an over-threshold alarm module; the program module includes: a data storage module, a signal analysis module and a performance evaluation module; wherein:

数据存储模块,用于存储第一标准信号所携带的数据、第二标准信号所携带的数据和第三标准信号所携带的数据;a data storage module for storing the data carried by the first standard signal, the data carried by the second standard signal and the data carried by the third standard signal;

信号分析模块,用于对数据存储模块存储的数据进行分析,得到分析结果;The signal analysis module is used to analyze the data stored in the data storage module to obtain the analysis result;

性能评估模块,用于根据信号分析模块得到的分析结果对轨道车辆轴箱性能进行评估;The performance evaluation module is used to evaluate the performance of the rail vehicle axle box according to the analysis results obtained by the signal analysis module;

数据显示模块,用于显示数据存储模块存储的数据;The data display module is used to display the data stored in the data storage module;

性能显示模块,用于显示性能评估模块评估的轨道车辆轴箱性能状况;The performance display module is used to display the performance status of the axle box of the rail vehicle evaluated by the performance evaluation module;

超阈值报警模块,用于在信号分析模块得到的分析结果超过预设阈值时,进行报警。The over-threshold alarm module is used for alarming when the analysis result obtained by the signal analysis module exceeds the preset threshold.

具体地,信号采集卡将采集到的信号通过输出端输入给计算机,计算机的LabVIEW轨道车辆轴箱监测系统包括前面板和程序模块,前面板包括数据显示模块、性能显示模块和超阈值报警模块,程序模块包括数据存储模块、信号分析模块和性能评估模块。相关工作人员通过前面板上提供的信息,实时了解轴箱性能状况,若性能提示模块或超阈值报警模块出现异常,工作人员可及时采取措施,避免发生故障。Specifically, the signal acquisition card inputs the collected signals to the computer through the output terminal. The LabVIEW rail vehicle axle box monitoring system of the computer includes a front panel and a program module, and the front panel includes a data display module, a performance display module and an over-threshold alarm module. The program module includes a data storage module, a signal analysis module and a performance evaluation module. Relevant staff can understand the performance status of the axle box in real time through the information provided on the front panel. If the performance prompt module or the over-threshold alarm module is abnormal, the staff can take timely measures to avoid failure.

由此可见,通过传感器技术与LabVIEW软件开发平台结合设计得到本发明实施例提供的基于LabVIEW的轨道车辆轴箱监测系统,可在线实时监测轴箱性能状态,相关工作人员可根据在线监测的信息反馈及时对轨道车辆轴箱进行实情维修,避免故障的发生,对轨道车辆运行安全性具有重要意义。It can be seen that the LabVIEW-based rail vehicle axle box monitoring system provided by the embodiment of the present invention is designed by combining the sensor technology and the LabVIEW software development platform, which can monitor the performance status of the axle box online in real time, and the relevant staff can feedback the information based on the online monitoring. It is of great significance to the safety of rail vehicle operation to carry out actual maintenance on rail vehicle axle box in time to avoid the occurrence of failure.

以上仅为本申请的实施例而已,并不用于限制本申请。对于本领域技术人员来说,本申请可以有各种更改和变化。凡在本申请的精神和原理之内所作的任何修改、等同替换、改进等,均应包含在本申请的权利要求范围之内。The above are merely examples of the present application, and are not intended to limit the present application. Various modifications and variations of this application are possible for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the scope of the claims of this application.

Claims (5)

1. A rail vehicle axle box monitoring system based on LabVIEW, comprising:
the system comprises a rail vehicle axle box, a static sensor, a vibration sensor, a temperature sensor, a signal conditioning unit, a data acquisition card and a computer; wherein:
the static sensor, the vibration sensor and the temperature sensor are mounted at the bottom of the rail vehicle axle box;
the output end of the electrostatic sensor, the output end of the vibration sensor and the output end of the temperature sensor are respectively connected with the input end of the signal conditioning unit;
the output end of the signal conditioning unit is connected with the input end of the data acquisition card;
the output end of the data acquisition card is connected with a computer;
the static sensor detects the static level generated by the abrasion of the bearing of the axle box of the rail vehicle and sends a first detection signal to the signal conditioning unit;
the vibration sensor detects the magnitude of the vibration signal of the axle box of the railway vehicle and sends a second detection signal to the signal conditioning unit;
the temperature sensor detects the temperature generated by friction between the shaft in the axle box of the rail vehicle and the bearing and sends a third detection signal to the signal conditioning unit;
the signal conditioning unit receives the first detection signal, the second detection signal and the third detection signal, amplifies and filters the first detection signal, the second detection signal and the third detection signal to convert the first detection signal, the second detection signal and the third detection signal into a first standard signal, a second standard signal and a third standard signal, and sends the first standard signal, the second standard signal and the third standard signal to the data acquisition card;
the data acquisition card acquires the first standard signal, the second standard signal and the third standard signal and sends the first standard signal, the second standard signal and the third standard signal to the computer;
and setting LabVIEW monitoring software for the computer, monitoring the first standard signal, the second standard signal and the third standard signal, and prompting when the first standard signal, the second standard signal and/or the third standard signal do not accord with a preset rule.
2. The system according to claim 1, wherein the rail vehicle axle housing bottom is provided with three holes, and the inductive probes of the electrostatic sensor, the vibration sensor and the temperature sensor enter the rail vehicle axle housing through the holes and approach the bearings, respectively.
3. The system of claim 2, wherein the electrostatic sensor, the vibration sensor, and the temperature sensor are mounted in parallel.
4. The system of claim 1, wherein the computer comprises: a front panel and a program module;
wherein:
the front panel is used for displaying information;
the program module is used for processing and analyzing data.
5. The system of claim 4, wherein the front panel comprises: the system comprises a data display module, a performance display module and a super-threshold alarm module; the program module includes: the device comprises a data storage module, a signal analysis module and a performance evaluation module; wherein:
the system comprises a data display module, a performance display module, a super-threshold alarm module, a data storage module, a signal analysis module and a performance evaluation module; wherein:
the data storage module is configured to store data carried by the first standard signal, data carried by the second standard signal, and data carried by the third standard signal;
the signal analysis module is used for analyzing the data stored by the data storage module to obtain an analysis result;
the performance evaluation module is used for evaluating the performance of the rail vehicle axle box according to the analysis result obtained by the signal analysis module;
the data display module is used for displaying the data stored by the data storage module;
the performance display module is used for displaying the performance condition of the rail vehicle axle box evaluated by the performance evaluation module;
and the over-threshold alarming module is used for alarming when the analysis result obtained by the signal analysis module exceeds a preset threshold.
CN201911144106.8A 2019-11-20 2019-11-20 Rail vehicle axle box monitoring system based on LabVIEW Pending CN110887523A (en)

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Application publication date: 20200317