CN205483568U - Engine acoustical signal sampling device and because automobile engine fault detection system of acoustical signal - Google Patents
Engine acoustical signal sampling device and because automobile engine fault detection system of acoustical signal Download PDFInfo
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- CN205483568U CN205483568U CN201620143987.7U CN201620143987U CN205483568U CN 205483568 U CN205483568 U CN 205483568U CN 201620143987 U CN201620143987 U CN 201620143987U CN 205483568 U CN205483568 U CN 205483568U
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- acoustical signal
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Abstract
The utility model discloses an engine acoustical signal sampling device and because automobile engine fault detection system of acoustical signal, including acoustical signal sampling device, data processing unit with locate the display element of auttombilism room, data processing unit and display element signal connection are connected with the data processing unit is electric to the acoustical signal sampling device, wherein: sound signal sampling unit include sound sensor, preamplifier, gain control ware, back mixing fold the wave filter and D the converter, the vocal print signal of engine is gathered to the sound sensor of locating the engine, the vocal print signal of collection in proper order through preamplifier, gain control ware, back mixing fold the wave filter, D behind converter input data processing unit. The utility model discloses need not to dismantle the car and can the anytime and anywhere accuracy monitor the automobile engine state, compare in the engine failure detection device based on the signal of telecommunication, the utility model discloses it is simpler, and it is convenient.
Description
Technical field
This utility model belongs to engine failure detection technique field, is specifically related to a kind of electromotor acoustical signal sampling apparatus and automobile engine fault detection system based on acoustical signal.
Background technology
Along with highway construction development is rapid, highway communication has become the indispensable tie of economic development, and automobile becomes instrument most basic in highway communication.In the last few years, the automobile usage amount in China or even the world rapidly increased, it may be said that automobile becomes requisite instrument in people's life, but the thing followed is the failure problems of automobile.Showing according to investigations, in diversified vehicle failure, engine failure accounting is maximum, and the consequence caused that has an accident is the most serious.If automobile engine fault can be detected in time and takes appropriate measures, the person and property safety will there be is huge help.
Abroad, engine research mechanism and factory commercial city are attached great importance to development and improve various Engine Block Test technology, whether provide high accuracy and diversified analysis means in the further investigation that fundamental research is still all Engine Block Test technology on applied research.Along with the development of artificial intelligence technology, Foreign Engine fault diagnosis technology enters the intelligent stage, and the accuracy of diagnosis greatly improves.
Relative to abroad, Domestic Automotive Industry is relatively backward, and the theoretical research of automotive engineering state-detection and fault diagnosis technology is started late, bigger with external gap on dependable with function especially.At present, the engine diagnosis means at domestic scene are also little, to operating electromotor, often after driver or maintenance personnel note abnormalities, listened by ear, observe, method that hands is touched, and the experience relying on technical staff is fixed a breakdown.Home products at present, as Jinan radio one factory takes the lead in developing QFC Engine Series performance synthesis detector, it is impossible to meeting the needs of auto repair, detection industry, external product occupies main status the most in the market.For catching up with and surpass the international high standards, saving fund, meet domestic automobile maintenance, the demand of detection industry, be badly in need of developing a kind of energy be suitable for the multiparameter of China's national situation, multi-vehicle-type, in high precision, digitized and intelligent engine synthesis analyzer easy to use.
From the point of view of current various countries present situation, the development of National Industrial is inseparable with the development of automobile industry, if a national automobile industry is the most flourishing, then its industry inevitable development is rapid, so that economic swift and violent growth.At present, domestic motor vehicles for civilian use market expands rapidly, and the automobile usage amount of China is stood out in the world.Meanwhile, the situation that automobile engine breaks down is the most of common occurrence, and automobile once breaks down not only affects the normal operation of vehicle, also can be direct or indirect cause huge economic loss, even jeopardize personal safety.In numerous signals, quantity of information that motor acoustical signal comprises is maximum, and just can collect acoustical signal and detect fault without dismantling automobile through the judgement of science, studies discovery through inventor, uses voice recognition technology can effectively find engine failure.The automobile engine fault detection system of market is all based on the signal of telecommunication at present.
Utility model content
The purpose of this utility model is to provide a kind of electromotor acoustical signal sampling apparatus and automobile engine fault detection system based on acoustical signal, and this system can accurately judge electromotor whether fault without dismantling automobile.
For solving above-mentioned technical problem, this utility model adopts the following technical scheme that:
One, a kind of electromotor acoustical signal sampling apparatus, including:
Sound transducer, preamplifier, gain controller, anti-aliasing filter, sampling holder and A D changer, the sound transducer being located at electromotor gathers the vocal print signal of electromotor, and the vocal print signal of collection is successively through preamplifier, gain controller, anti-aliasing filter, sampling holder, A D changer.
Two, a kind of automobile engine fault detection system based on acoustical signal, including:
Acoustical signal sampling apparatus, data processing unit and be located at the display unit of automobile cab, acoustical signal sampling apparatus electrically connects with data processing unit, and data processing unit is connected with display unit signal；Wherein:
Acoustical signal sampling apparatus include sound transducer, preamplifier, gain controller, anti-aliasing filter, sampling holder and A D changer, the sound transducer being located at electromotor gathers the vocal print signal of electromotor, and the vocal print signal of collection is successively through preamplifier, gain controller, anti-aliasing filter, sampling holder, A D changer.
As preferably, use 4 sound transducers to be arranged at electromotor surrounding, so can the vocal print signal of electromotor in the motion of comprehensive collection vehicle, by multiple vocal print signals being averaged process to obtain audio signal more accurately.
Tut sensor is mike.
Above-mentioned data processing unit is microprocessor, preferably MSP430F149 processor.
In this utility model, acoustical signal sampling unit is used for gathering the vocal print signal of electromotor.When engine failure, the characteristic parameter of its vocal print signal can change；When electromotor is in different faults, the characteristic parameter of its vocal print signal also can be different.Based on this, data processing unit uses the characteristic parameter of existing algorithm extract real-time vocal print signal, such as extract linear prediction residue error LPCC and MFCC cepstrum MFCC, by the characteristic parameter that extracted and the characteristic parameter comparison under current versions electromotor fault-free and different faults, to judge electromotor whether fault and fault type.Display device is used for showing engine failure judged result.
Comparing with existing automobile engine fault detection technique, this utility model has a characteristic that
(1) use the sound transducer being located at motor to gather electric moter noise, the impact of non-engine noise can be reduced, thus increase the reliability of sampling.
(2) use four acoustical signal sampling units to gather, can accurate acquisition engine noise signal, thus increase the accuracy of sampling.
(3) can monitor car engine state whenever and wherever possible without dismantling automobile, detect device compared to engine failure based on the signal of telecommunication, this utility model is simpler and convenient.
(4) use the microprocessor of super low-power consumption, system power dissipation can be substantially reduced, it is ensured that the real-time of system and long-term work.
Accompanying drawing explanation
Fig. 1 is concrete structure schematic diagram of the present utility model；
Fig. 2 is the concrete structure schematic diagram of this utility model sampling unit.
Detailed description of the invention
Seeing Fig. 1～2, in this detailed description of the invention, arrange four sample points in electromotor surrounding, each sample point is respectively provided with a mike, is used for gathering the vocal print signal of electromotor.The vocal print signal gathered inputs data processing unit successively after preamplifier, gain controller, anti-aliasing filter, sampling holder, A D changer.Data processing unit processes to judge electromotor whether fault to the vocal print signal received, and will determine that result feeds back to receive terminal.Data processing unit can use the characteristic parameter of existing Algorithm Analysis vocal print signal of the prior art, and feature based signal characteristic parameter judges engine failure state.
In this detailed description of the invention, data processing unit uses the MSP430F149 processor of TI company, and this processor can enter the low-power consumption mode of 3.3V.In view of low-power consumption requirement, timing sampling scheme can be used, carry out periodic samples.In the non-sampled period, data processing unit enters low-power consumption mode, reduces system power with this；Sampling periods enters mode of operation, so the low-power of safeguards system can either also not interfere with the real-time of system.
Claims (7)
1. an electromotor acoustical signal sampling apparatus, is characterized in that, including:
Sound transducer, preamplifier, gain controller, anti-aliasing filter, sampling holder and A D
Changer, the sound transducer being located at electromotor gathers the vocal print signal of electromotor, and the vocal print signal of collection is successively
Through preamplifier, gain controller, anti-aliasing filter, sampling holder, A D changer.
2. electromotor acoustical signal sampling apparatus as claimed in claim 1, is characterized in that:
Described sound transducer has 4, is arranged at electromotor surrounding.
3. electromotor acoustical signal sampling apparatus as claimed in claim 1, is characterized in that:
Described sound transducer is mike.
4. an automobile engine fault detection system based on acoustical signal, is characterized in that, including:
Acoustical signal sampling apparatus, data processing unit and be located at the display unit of automobile cab, acoustical signal is sampled
Device electrically connects with data processing unit, and data processing unit is connected with display unit signal；Wherein:
Acoustical signal sampling apparatus include sound transducer, preamplifier, gain controller, anti-aliasing filter,
Sampling holder and A D changer, the sound transducer being located at electromotor gathers the vocal print signal of electromotor,
Gather vocal print signal successively through preamplifier, gain controller, anti-aliasing filter, sampling holder,
A D changer.
5. automobile engine fault detection system based on acoustical signal as claimed in claim 4, is characterized in that:
Described sound transducer has 4, is arranged at electromotor surrounding.
6. automobile engine fault detection system based on acoustical signal as claimed in claim 4, is characterized in that:
Described sound transducer is mike.
7. automobile engine fault detection system based on acoustical signal as claimed in claim 4, is characterized in that:
Described data processing unit is MSP430F149 processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620143987.7U CN205483568U (en) | 2016-02-25 | 2016-02-25 | Engine acoustical signal sampling device and because automobile engine fault detection system of acoustical signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620143987.7U CN205483568U (en) | 2016-02-25 | 2016-02-25 | Engine acoustical signal sampling device and because automobile engine fault detection system of acoustical signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205483568U true CN205483568U (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620143987.7U Expired - Fee Related CN205483568U (en) | 2016-02-25 | 2016-02-25 | Engine acoustical signal sampling device and because automobile engine fault detection system of acoustical signal |
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| CN (1) | CN205483568U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109991003A (en) * | 2019-03-21 | 2019-07-09 | 北京宇航系统工程研究所 | Engine state monitor and diagnostic system and implementation method based on acoustic monitoring |
| CN112397088A (en) * | 2019-08-12 | 2021-02-23 | 美光科技公司 | Predictive maintenance of automotive engines |
| CN112992179A (en) * | 2021-02-05 | 2021-06-18 | 安徽绿舟科技有限公司 | Recognition method for detecting faults of gas turbine based on voiceprint signals |
| US11830296B2 (en) | 2019-12-18 | 2023-11-28 | Lodestar Licensing Group Llc | Predictive maintenance of automotive transmission |
| US11853863B2 (en) | 2019-08-12 | 2023-12-26 | Micron Technology, Inc. | Predictive maintenance of automotive tires |
-
2016
- 2016-02-25 CN CN201620143987.7U patent/CN205483568U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109991003A (en) * | 2019-03-21 | 2019-07-09 | 北京宇航系统工程研究所 | Engine state monitor and diagnostic system and implementation method based on acoustic monitoring |
| CN109991003B (en) * | 2019-03-21 | 2021-06-11 | 北京宇航系统工程研究所 | Engine state monitoring and diagnosing system based on acoustic monitoring and implementation method |
| CN112397088A (en) * | 2019-08-12 | 2021-02-23 | 美光科技公司 | Predictive maintenance of automotive engines |
| US11853863B2 (en) | 2019-08-12 | 2023-12-26 | Micron Technology, Inc. | Predictive maintenance of automotive tires |
| US11830296B2 (en) | 2019-12-18 | 2023-11-28 | Lodestar Licensing Group Llc | Predictive maintenance of automotive transmission |
| CN112992179A (en) * | 2021-02-05 | 2021-06-18 | 安徽绿舟科技有限公司 | Recognition method for detecting faults of gas turbine based on voiceprint signals |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20170225 |
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| CF01 | Termination of patent right due to non-payment of annual fee |