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Vibration signal analysis-based vehicle operation condition monitoring module and method

A vibration signal, vehicle running technology, applied in the direction of vehicle testing, machine/structural component testing, measuring devices, etc., can solve problems such as inconvenient installation and use

Active Publication Date: 2016-04-20
HARBIN INST OF TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of using performance parameter monitoring and oil analysis and monitoring methods to monitor the running state of vehicles. Different monitoring parameters need to be selected for different vehicles, and there is a problem of inconvenient installation and use. A vibration-based Vehicle operating condition monitoring module and method for signal analysis

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  • Vibration signal analysis-based vehicle operation condition monitoring module and method
  • Vibration signal analysis-based vehicle operation condition monitoring module and method
  • Vibration signal analysis-based vehicle operation condition monitoring module and method

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specific Embodiment approach 1

[0024] Specific implementation mode one: the following combination Figure 1 to Figure 3 Describe the present embodiment, the vehicle running condition monitoring module based on vibration signal analysis described in the present embodiment, it comprises main controller 1, signal acquisition conditioning unit 2 and TF card 3;

[0025] The acceleration sensor 4 arranged on the vehicle collects the vibration signal of the vehicle; and sends it to the main controller 1 through the signal collection and conditioning unit 2;

[0026] The main controller 1 communicates with the upper computer 5 through a serial port; the upper computer 5 uses the working condition monitoring data in the previous experiment stage as a vehicle vibration signal sample, builds a model based on the sample, and downloads it to the main controller 1;

[0027] After the signal acquisition and conditioning unit 2 conditions the vehicle vibration signal, it is received and processed by the main controller 1, ...

specific Embodiment approach 2

[0040] Specific implementation mode two: the following combination Figure 4 to Figure 6 Describe this embodiment, the vehicle operating condition monitoring method based on vibration signal analysis described in this embodiment is implemented based on the module of Embodiment 1, and the method includes the following steps:

[0041]Step 1, the upper computer 5 constructs a model according to the vehicle vibration signal samples provided by the vehicle operating condition monitoring module, and the model constructs the corresponding relationship between the characteristic value of the vehicle vibration signal and the type of operating condition; the model is downloaded to the main controller and waits to be called ;

[0042] Step 2, using the acceleration sensor 4 to collect the vibration signal of the vehicle at a set sampling frequency;

[0043] Step 3, the signal acquisition and conditioning unit 2 amplifies and filters the vehicle vibration signal to filter out the interfe...

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Abstract

The invention relates to a vibration signal analysis-based vehicle operation condition monitoring module and method and belongs to the vehicle performance monitoring field. When performance parameter monitoring and oil monitoring analysis methods are adopted to realize the operation condition monitoring of vehicles, different monitoring parameters are required to be selected for different vehicles, while, with the monitoring module and method of the invention adopted, the above situation can be avoided. The vibration signal analysis-based vehicle operation condition monitoring module of the invention includes a main controller, a signal acquisition and conditioning unit and a TF Card; an upper computer construct a model according to vehicle vibration signal samples provided by the vehicle operation condition monitoring module, wherein the model constructs corresponding relationships between the feature values of vehicle vibration signals and condition types and is downloaded into the main controller to wait for calling; an acceleration sensors arranged on a vehicle acquires the vibration signals of the vehicle; after the signals are processed, time domain analysis, frequency domain analysis and transform domain analysis are performed on the signals, so that the feature values of the vehicle vibration signals can be obtained; and the model is called to judge a condition type corresponding to current vehicle vibration signals, so that the online monitoring of vehicle operation conditions can be realized.

Description

technical field [0001] The invention relates to a technology for monitoring vehicle operating conditions, and belongs to the field of vehicle performance monitoring. Background technique [0002] Vehicle operating conditions, that is, the process operating status of the vehicle. With the complex and changeable operating conditions of the vehicle, its running time under different operating conditions will affect its health status. In order to obtain the operating status of the vehicle, it is necessary to monitor its operating conditions. At present, the status monitoring of the vehicle mainly collects the running status data of the vehicle and adopts the offline processing method to evaluate the running status of the vehicle. There is a lack of effective online monitoring means for the operating conditions of the vehicle. In order to realize the online monitoring of the operating conditions of the vehicle, it is necessary to design and implement a state monitoring module wit...

Claims

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Application Information

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IPC IPC(8): G01M17/007
CPCG01M17/007
Inventor 刘大同牛广行唐奕刘旺彭宇彭喜元
Owner HARBIN INST OF TECH
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