CN114326668A - Auxiliary diagnosis and analysis device for automobile vibration noise fault - Google Patents
Auxiliary diagnosis and analysis device for automobile vibration noise fault Download PDFInfo
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- CN114326668A CN114326668A CN202111593126.0A CN202111593126A CN114326668A CN 114326668 A CN114326668 A CN 114326668A CN 202111593126 A CN202111593126 A CN 202111593126A CN 114326668 A CN114326668 A CN 114326668A
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Abstract
The invention discloses an auxiliary diagnosis and analysis device for automobile vibration noise faults, which comprises a microprocessor system, one or more sound capture systems of a sound catcher, a vibration induction system of one or more vibration sensors, an OBD (on-board diagnostics) online diagnosis system, a mobile phone APP real-time operating system and an expert database system, wherein the sound capture systems of one or more sound catchers are respectively connected with the microprocessor system, the microprocessor system is bidirectionally connected with the mobile phone APP real-time operating system through a Bluetooth module, the microprocessor system is bidirectionally connected with the expert database system through a network module, the OBD online diagnosis system is unidirectionally connected with the microprocessor system, the vibration induction system of one or more vibration sensors is connected with the microprocessor system through a connecting line, the device can accurately analyze and measure the fault reasons of the noise and the vibration of a vehicle and can accurately and quickly feed back an analysis result, and a diagnosis basis is provided for engineering technicians, and the misjudgment probability is reduced.
Description
Technical Field
The invention relates to the technical field of new energy automobiles and electric automobile diagnosis equipment, in particular to an auxiliary diagnosis and analysis device for automobile vibration noise faults.
Background
When the automobile works, each system can generate vibration with certain amplitude due to the movement, and the vibration can generate sound when reaching certain frequency, so that the sound is called as automobile sound, and can also be called as abnormal sound or noise. Some of these sounds are certain to occur during system operation and are called normal sounds; some of them are generated when the system is abnormal or failed, which is called abnormal sound or abnormal sound. Many faults of the automobile can be represented to the outside through abnormal sound, and the abnormal sound is only a surface phenomenon, but the faults are essential.
Because an internal combustion engine is not carried, abnormal noise and vibration of the electric automobile are much smaller than those of a fuel oil automobile, especially at medium and low speed. Under the condition of low background noise, abnormal noise or vibration of parts can be particularly obvious and can be easily identified, and customer complaints can be easily caused.
The method for judging the working condition of the vehicle through the abnormal sound and the vibration of the vehicle is always one of important means for diagnosing the fault of the vehicle, and trained maintenance personnel can preliminarily judge the fault reason of the vehicle by a simple auscultation tool or even without any tool, but the requirements on the experience of the maintenance personnel are very strict, and long-time experience accumulation or professional skill training is required.
The existing auxiliary diagnosis and analysis device for the vibration noise fault of the automobile has the following defects;
1. due to the fact that background noise is low, abnormal sound and vibration of the electric automobile can seriously affect the driving experience of a user, and the electric automobile is required to be more severe in control of the abnormal sound and the vibration.
2. The fundamental reasons of abnormal sound and vibration of the automobile are sometimes various, deviation and even errors are easy to occur when engineering technicians conduct investigation, the requirements on experience of the workers are high, and the efficiency is low.
Disclosure of Invention
The invention aims to provide an auxiliary diagnosis and analysis device for automobile vibration noise faults, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an automobile vibration noise fault auxiliary diagnosis analytical equipment which characterized in that: vibration induction system, OBD online diagnosis system, cell-phone APP real-time operating system and expert database system including the sound entrapment system of microprocessor system, one or more sound catcher, one or more vibration sensor, microprocessor system is connected respectively to the sound entrapment system of one or more sound catcher, microprocessor system passes through bluetooth module both way junction cell-phone APP real-time operating system, microprocessor system passes through network module both way junction expert database system, OBD online diagnosis system one-way connection microprocessor system, microprocessor system is connected through the connecting wire to the vibration induction system of one or more vibration sensor.
In a preferred embodiment of the present invention, the vibration noise analysis device has a sound capture function, a vehicle vibration collection function, an OBD online diagnosis function, a network communication function (such as CAN communication), a bluetooth communication function, a vehicle design information input function, an expert system access function, a working condition self-learning function, a memory storage function, a fault characteristic spectrum analysis and comparison function, a diagnosis result display function, and the like.
As a preferred embodiment of the present invention, the bluetooth module is connected to the voice editing circuit, the single chip microcomputer, the display circuit and the front end sensor circuit through a connection line, the bluetooth module is bidirectionally connected to the single chip microcomputer, and the single chip microcomputer is bidirectionally connected to the display circuit and the front end sensor circuit.
As a preferred embodiment of the present invention, the sound catcher includes a microphone, a noise reduction module, a connection module, a recording module, and a transmission module, and the sound catcher includes a microphone, a noise reduction module, a connection module, a recording module, and a transmission module, which are all connected in series from front to back in sequence.
Compared with the prior art, the invention has the beneficial effects that:
the local vibration noise analysis device can accurately analyze and measure the fault reasons of the vehicle noise and vibration, can accurately and quickly feed back the analysis result, provides diagnosis basis for engineering technicians, saves manpower and material resources, can greatly reduce the requirement on the professional of the practitioners and reduces the misjudgment probability.
Drawings
FIG. 1 is a block diagram of a vibration noise analysis apparatus according to the present invention;
FIG. 2 is a flow chart of the diagnostic operation of the vibration noise analysis apparatus according to the present invention
FIG. 3 is a flowchart illustrating the operation of the Bluetooth module of the present invention;
fig. 4 is a flow chart of the operation of the transmission module of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution:
the utility model provides an automobile vibration noise fault auxiliary diagnosis analytical equipment which characterized in that: the system comprises a microprocessor system, a sound trapping system of one or more sound traps, a vibration induction system of one or more vibration sensors, an OBD (on-board diagnostics) online diagnosis system, a mobile phone APP real-time operation system and an expert database system, wherein the sound trapping system of one or more sound traps is respectively connected with the microprocessor system, the microprocessor system is bidirectionally connected with the mobile phone APP real-time operation system through a Bluetooth module, the microprocessor system is bidirectionally connected with the expert database system through a network module, the OBD online diagnosis system is unidirectionally connected with the microprocessor system, the vibration induction system of one or more vibration sensors is connected with the microprocessor system through a connecting line, through the combination of the modules, the fault reasons of vehicle noise and vibration can be accurately analyzed and measured, the analysis result can be accurately and rapidly fed back, and the diagnosis basis is provided for engineering technical personnel, manpower and material resources are saved, the requirement on the professional of the practitioner can be greatly reduced, and the misjudgment probability is reduced.
As a preferred embodiment of the present invention, the vibration noise analysis device has a sound capture function, a vehicle vibration collection function, an OBD online diagnosis function, a network communication function (such as CAN communication), a bluetooth communication function, a vehicle design information input function, an expert system access function, a working condition self-learning function, a memory function, a fault characteristic spectrum analysis and comparison function, a diagnosis result display function, and the like, and is used to replace or assist a professional in performing fault diagnosis and analysis on abnormal sound and vibration of an automobile.
As a preferred embodiment of the present invention, the bluetooth module is connected to the voice editing circuit, the single chip microcomputer, the display circuit and the front end sensor circuit through a connection line, the bluetooth module is bidirectionally connected to the single chip microcomputer, the single chip microcomputer is bidirectionally connected to the display circuit and the front end sensor circuit, and the bluetooth module can effectively transmit information wirelessly, so that a mobile phone of a user can receive information.
As a preferred embodiment of the present invention, the sound catcher includes a microphone, a noise reduction module, a connection block, a recording module, and a transmission module, which are all connected in series from front to back, and the sound catcher can catch noise, so that sound information inside and outside the automobile is used for analysis and comparison.
Introduction to function
The main functions of the sound capture function are: and collecting sound information inside and outside the automobile for analysis and comparison.
The main functions of the vehicle vibration acquisition function are as follows: and collecting vibration information of each key part of the vehicle for analysis and comparison.
The main functions of the OBD online diagnosis function are as follows: and establishing communication with the whole vehicle communication network so as to acquire vehicle operation information and diagnosis data.
The main functions of the network communication function are as follows: a connection is established with the vehicle and the public network for data exchange with the vehicle or an online network resource, such as an expert database.
The main functions of the bluetooth communication function are: and establishing connection with the handheld terminal or the OBD device.
The main functions of the vehicle design information input function are: and presetting vehicle design parameter information in advance for analyzing vibration and noise data.
The main roles of the expert system access functions are: and accessing and modifying the benchmark data and the preset information, and establishing and calling expert database information.
The main functions of the working condition self-learning function are as follows: the data acquisition of the benchmarking vehicle or the standard vehicle can be uploaded to an expert database system for storage, so that the comparison and analysis of the fault vehicle are facilitated.
The main functions of the memory storage function are: the test result and the diagnosis result are locally stored, so that the test result and the diagnosis result are convenient to access, call and compare.
The main functions of the fault characteristic spectrum analysis comparison function are as follows: and analyzing the noise and vibration information acquired by the fault vehicle, comparing and analyzing the noise and vibration information with the benchmarking vehicle data or the expert database information, and positioning the fault reason to form a diagnosis conclusion.
The main functions of the diagnostic result display function and the like are: and summarizing and displaying the diagnosis conclusion and performing man-machine interaction to assist the diagnosis process.
Sound capture
The vibration noise analysis device is characterized in that one or more sound traps are arranged inside or outside the test vehicle to collect sound or noise information of the vehicle during working, and a sound acquisition circuit is arranged inside the vibration noise analysis device to convert noise signals into electric signals to be recorded and stored, so that original data support is provided for diagnosis and analysis.
Vehicle vibration acquisition
The vibration noise analysis device is characterized in that one or more vibration acquisition sensors are arranged at different positions of a test vehicle, vibration information of the vehicle during working is collected and sensed, a vibration sensor driving circuit is arranged in the vibration noise analysis device, vibration signals of the vehicle or parts are converted into electric signals to be recorded and stored, and original data support is provided for diagnosis and analysis.
OBD on-line diagnostics
The vehicle-mounted system is interconnected with a vehicle-mounted network in an OBD Bluetooth device or a mode of directly connecting an OBD interface of the vehicle, and real-time data of the vehicle, such as vehicle speed, motor rotating speed, current, voltage and the like, are acquired, collected and stored and serve as important basis for fault diagnosis and analysis.
Network communication
The vibration noise analysis device can be linked with an online system through a public network (such as satellite communication, GPRS, wireless WiFi and the like), such as an expert system and the like, so as to obtain necessary external support and necessary information communication.
Bluetooth communication
The vibration noise analysis device has a Bluetooth communication function, so that the link capacity of the vibration noise analysis device and a mobile phone APP or other necessary external equipment can be acquired, Bluetooth communication is an important data interaction means of the vibration noise analysis device and other external equipment, and issuing of an operation instruction of the mobile phone APP, inputting of vehicle design information, linking of an OBD diagnosis interface and feedback of a final diagnosis result of a vehicle can be completed through Bluetooth communication.
Vehicle design information input
The mobile phone or other handheld devices are linked with the vibration noise analysis device through Bluetooth or other communication modes, vehicle design information parameters (such as motor types, motor structure parameters, transmission system types, reduction ratios, gear tooth numbers, spline parameters and the like) are input into the vibration noise analysis device on an APP operation interface of the handheld device, and the parameters participate in analysis and calculation of the fault characteristic spectrum, so that the accuracy of a fault analysis result is influenced.
Expert system access
The vibration noise analysis device can upload the collected benchmarking vehicle or standard working condition data to an expert system, can also call corresponding data from an expert system database to participate in comparative analysis, and can adopt a characteristic sound retrieval and/or classification retrieval mode to improve the accuracy of an analysis conclusion.
Working condition self-learning
The working condition self-learning function is actually a data acquisition process of the marker post vehicle, and the fault frequency band can be quickly and accurately extracted by acquiring noise and vibration data of a normal vehicle (the marker post vehicle) during working and comparing the noise and vibration data with data of a fault vehicle. Meanwhile, the difficulty of analysis is reduced and the operation speed is increased.
Fault characteristic spectrum analysis and comparison
The analysis and comparison of the fault characteristic spectrum are the core functions of the vibration noise analysis device, the vibration noise analysis device collects vehicle information through various ways, and a diagnosis final conclusion is obtained after a series of processing such as calculation, comparison, analysis and the like is carried out on the information.
Display of diagnostic results
The vibration noise analysis device displays the result of the analyzed and calculated diagnosis conclusion on the handheld terminal equipment through Bluetooth or other communication means, and provides diagnosis reference for engineering technicians.
The working principle is as follows: connecting the handheld device with a vibration noise analysis device through a handheld device APP operation interface in a Bluetooth mode, and inputting design parameters and information of a vehicle to be tested; connecting a public network and logging in an expert database support system; selecting the marker post vehicle information acquisition or the fault vehicle information acquisition, installing and arranging each sound catcher and each vibration sensor to a corresponding acquisition point when the marker post vehicle information is acquired, connecting a vehicle-mounted CAN communication network or an OBD diagnosis network through a mobile phone APP, finishing the vehicle prepared above to start working condition road test, locally storing the information and data collected by the road test, simultaneously uploading an expert database support system, when the fault vehicle information is acquired, calling corresponding marker post vehicle data or relevant data of the expert database by a vibration noise analysis device, installing various sensors, connecting the vehicle-mounted CAN communication network or the OBD diagnosis network, carrying out the working condition road test, calculating, comparing and analyzing the information and data collected by the road test, the marker post vehicle data, the expert system data, the vehicle design parameter information and the like, finishing fault characteristic spectrum analysis, and forming a diagnosis result, and finally, displaying the diagnosis result on the handheld equipment to finish a diagnosis process.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides an automobile vibration noise fault auxiliary diagnosis analytical equipment which characterized in that: vibration induction system, OBD online diagnosis system, cell-phone APP real-time operating system and expert database system including the sound entrapment system of microprocessor system, one or more sound catcher, one or more vibration sensor, microprocessor system is connected respectively to the sound entrapment system of one or more sound catcher, microprocessor system passes through bluetooth module both way junction cell-phone APP real-time operating system, microprocessor system passes through network module both way junction expert database system, OBD online diagnosis system one-way connection microprocessor system, microprocessor system is connected through the connecting wire to the vibration induction system of one or more vibration sensor.
2. The auxiliary diagnosis and analysis device for the automobile vibration noise fault according to claim 1 is characterized in that: the vibration noise analysis device has a sound capture function, a vehicle vibration acquisition function, an OBD online diagnosis function, a network communication function (such as CAN communication and the like), a Bluetooth communication function, a vehicle design information input function, an expert system access function, a working condition self-learning function, a memory storage function, a fault characteristic spectrum analysis comparison function, a diagnosis result display function and the like.
3. The auxiliary diagnosis and analysis device for the automobile vibration noise fault according to claim 1 is characterized in that: the Bluetooth module is connected with a voice editing circuit, a single chip microcomputer, a display circuit and a front end sensor circuit through connecting wires, the Bluetooth module is in bidirectional connection with the single chip microcomputer, and the single chip microcomputer is in bidirectional connection with the display circuit and the front end sensor circuit.
4. The auxiliary diagnosis and analysis device for the automobile vibration noise fault according to claim 1 is characterized in that: the sound catcher comprises a microphone, a noise reduction module, a connecting block, a recording module and a transmission module, wherein the sound catcher comprises the microphone, the noise reduction module, the connecting block, the recording module and the transmission module which are sequentially connected in series in sequence from front to back.
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| CN202111593126.0A CN114326668A (en) | 2021-12-23 | 2021-12-23 | Auxiliary diagnosis and analysis device for automobile vibration noise fault |
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