CN113155463A

CN113155463A - New energy automobile bearing early failure stethoscope

Info

Publication number: CN113155463A
Application number: CN202110350372.7A
Authority: CN
Inventors: 章力; 王敏敏; 郭帅; 郭玉琳; 李伟; 高旭
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-07-23

Abstract

The invention relates to the technical field of automobile bearing detection, in particular to a new energy automobile bearing early failure stethoscope. The stethoscope comprises a signal acquisition probe, a auscultation system, a display screen, an earphone and a power supply module; the power module is respectively connected with the signal acquisition probe, the auscultation system, the display screen and the earphone. The signal acquisition probe is a resonance acceleration sensor, acquires early fault signals, transmits the acquired signals to the auscultation system at a high speed in real time, and the auscultation system processes and analyzes the acquired signals, receives auscultation sounds by wearing earphones and displays fault report information by using a display screen. The invention can realize early fault diagnosis of the new energy automobile bearing, eliminate early faults of the bearing in time and improve the driving safety of the new energy automobile.

Description

New energy automobile bearing early failure stethoscope

Technical Field

The invention relates to the technical field of automobile bearing detection, in particular to a new energy automobile bearing early failure stethoscope.

Background

The new energy automobile has the outstanding advantages of environmental protection, energy conservation and the like, is greatly developed by governments of various countries, and becomes an important future development direction of the automobile industry. The research on the fault diagnosis technology of the key parts of the new energy electric automobile, particularly the high-speed bearing in the driving system, has an important effect on improving the comfort performance and the safety performance of the new energy electric automobile.

Patent document No. CN206479129U discloses a bearing detector, which includes a detection platform, a column, a meter, a detection device and an end face support device, wherein the detection device includes a detection head and a detection rod. It is not suitable for in-service bearing detection and cannot detect early bearing failure.

In order to solve the defects in the prior art, the invention aims to provide a new energy automobile bearing early failure stethoscope, which can detect the early failure of a new energy automobile bearing by processing a bearing early failure signal acquired by a signal acquisition probe through a auscultation system, output a detection result through an earphone for a detection person to judge, and display a detection report on a display screen, so that the defects in the prior art can be overcome.

The purpose of the invention can be realized by the following technical scheme:

a new energy automobile bearing early failure stethoscope comprises a signal acquisition probe, a auscultation system, a display screen, an earphone and a power supply module; the power supply module is respectively connected with the signal acquisition probe, the auscultation system, the display screen and the earphone.

Preferably, the signal acquisition probe is a resonant acceleration sensor.

Preferably, the auscultation system comprises a signal conditioning module, an analog-to-digital conversion module, a single chip microcomputer controller and a digital-to-analog conversion module; the signal conditioning module is electrically connected with the analog-to-digital conversion module; the analog-to-digital conversion module is used as an input module and is electrically connected with the single chip microcomputer controller; the single chip microcomputer controller is electrically connected with the digital-to-analog conversion module.

Preferably, the signal conditioning module is a signal amplifying circuit and an anti-aliasing filtering circuit; the single chip microcomputer controller is an STM32 single chip microcomputer.

Preferably, the digital-to-analog conversion module is connected with the earphone.

Preferably, the signal acquisition probe is electrically connected with the signal conditioning module.

Preferably, the display screen is electrically connected with the single chip microcomputer controller.

The invention has the beneficial effects that:

compared with the prior art, the invention uses the resonance acceleration transducer as a signal acquisition probe, acquires high-frequency fault signals through the signal acquisition probe, outputs fault sounds through the earphone after being processed by the auscultation system, and displays detection reports on the display screen. An operator judges whether the high-speed bearing of the new energy automobile breaks down or not through the sound generated by the stethoscope, and checks the fault report information on the display screen, so that a complete and accurate fault diagnosis result can be automatically given, and the influence of the early fault of the high-speed bearing on the safety of the automobile can be eliminated.

Meanwhile, the invention also has the advantages of compact structure, reliable work, low equipment cost, simple operation and the like.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of an overall module of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a diagnostic flow chart of the present invention;

wherein the numbers in the figures are as follows:

1. a signal acquisition probe 2, an auscultation system 21, a signal conditioning module 22, an analog-to-digital conversion module 23, a singlechip controller 24, a digital-to-analog conversion module 3, a display screen 4, an earphone 5 and a power supply module,

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.

As shown in fig. 1, the auscultator for early bearing failure of the new energy automobile is characterized by comprising a signal acquisition probe 1, an auscultation system 2, a display screen 3, an earphone 4 and a power supply module 5; the power supply module 5 is respectively connected with the signal acquisition probe 1, the auscultation system 2, the display screen 3 and the earphone 4.

As shown in fig. 1-3, the signal acquisition probe 1 is a resonant acceleration sensor; the signal acquisition probe 1 is electrically connected with the signal conditioning module 21.

The auscultation system 2 comprises a signal conditioning module 21, an analog-to-digital conversion module 22, a single chip microcomputer controller 23 and a digital-to-analog conversion module 24; the signal conditioning module 21 is electrically connected with the analog-to-digital conversion module 22; the analog-to-digital conversion module 22 is used as an input module and is electrically connected with the single chip microcomputer controller 23; the single-chip microcomputer controller 23 is electrically connected with the digital-to-analog conversion module 24.

The signal conditioning module 21 is a signal amplifying circuit and an anti-aliasing filter circuit; the single chip controller 23 is an STM32 single chip.

The digital-to-analog conversion module 24 is connected to the headset 4.

The display screen 3 is electrically connected with the single chip microcomputer controller 23.

When the novel energy automobile bearing early failure stethoscope is used, an operator switches on a switch of the novel energy automobile bearing early failure stethoscope, attaches a signal acquisition probe 1 to a novel energy automobile bearing to be detected, wears an earphone 4 to receive auscultation sound of the detected novel energy automobile bearing, and checks failure report information on a display screen 3, and finally realizes diagnosis of the novel energy automobile bearing.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims

1. The auscultator for early failure of the bearing of the new energy automobile is characterized by comprising a signal acquisition probe (1), an auscultation system (2), a display screen (3), an earphone (4) and a power supply module (5); the power supply module (5) is respectively connected with the signal acquisition probe (1), the auscultation system (2), the display screen (3) and the earphone (4).

2. The auscultator for early bearing failure of the new energy automobile is characterized in that the signal acquisition probe (1) is a resonance acceleration sensor.

3. The stethoscope for the early failure of the bearing of the new energy automobile as claimed in claim 1, wherein the auscultation system (2) comprises a signal conditioning module (21), an analog-to-digital conversion module (22), a single chip microcomputer controller (23) and a digital-to-analog conversion module (24); the signal conditioning module (21) is electrically connected with the analog-to-digital conversion module (22); the analog-digital conversion module (22) is used as an input module and is electrically connected with the single chip microcomputer controller (23); the single chip microcomputer controller (23) is electrically connected with the digital-to-analog conversion module (24).

4. The auscultator for the early bearing fault of the new energy automobile is characterized in that the signal conditioning module (21) is a signal amplifying circuit and an anti-aliasing filter circuit; the single chip microcomputer controller (23) is an STM32 single chip microcomputer.

5. The auscultator for early failures of automobile bearings is characterized in that the digital-to-analog conversion module (22) is connected with the earphone (4).

6. The auscultation instrument for the early bearing failure of the new energy automobile as claimed in claims 2 and 3, wherein the signal acquisition probe (1) is electrically connected with the signal conditioning module (21).

7. The auscultation instrument for the early bearing failure of the new energy automobile as claimed in claims 1 and 3, wherein the display screen (3) is electrically connected with the single chip microcomputer controller (23).