CN103332074A - Voiceprint automobile tire pressure monitoring device - Google Patents
Voiceprint automobile tire pressure monitoring device Download PDFInfo
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- CN103332074A CN103332074A CN2013103144217A CN201310314421A CN103332074A CN 103332074 A CN103332074 A CN 103332074A CN 2013103144217 A CN2013103144217 A CN 2013103144217A CN 201310314421 A CN201310314421 A CN 201310314421A CN 103332074 A CN103332074 A CN 103332074A
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Abstract
The invention relates to a voiceprint automobile tire pressure monitoring device, which belongs to the field of automobile tire pressure safety monitoring technologies. Aiming at being capable of monitoring the inner pressure of an automobile tire outside the automobile tire at any time, the following measures are utilized: an ultrasonic generator and an ultrasonic receiver are arranged on the side of the automobile tire, the ultrasonic receiver is connected with an amplifier, the amplifier is connected with an A/D (analog to digital) conversion circuit, and the A/D conversion circuit is connected with an MCU (micro control unit). The MCU stores original voiceprint signals from the ultrasonic generator and data of echo voiceprint or voiceprint characteristics of the automobile tire under different inner pressure; and therefore the inner pressure of the automobile tire can be sensed outside the automobile tire at any time on the premise of not changing any structure of the automobile tire, and the traffic safety is facilitated.
Description
Technical field
The invention belongs to a field of air pressure of automobile tire safety monitoring technology.
Background technology
Usually see when seeing TV that automobile causes the news of traffic accident because blowing out, in reality, such accident is also of common occurrence in driving procedure.These tragedies are avoidable fully in fact, but for various reasons, it but we repeat showing at one's side one act of another curtain, very painful! It is many-sided tracing it to its cause, and it is reasons such as the poor quality of tire manufactures in a rough and slipshod way, tire aging that a lot of people only lay the blame on it, and but the few know to also have a very important reason in fact, and that is exactly the air pressure deficiency of motor tire.A lot of people have mistaken ideas in this respect, think motor tire the air pressure height blow out easily.In fact, true on the contrary, low easier the blowing out of air pressure height than tire of the air pressure of motor tire.Reason is very simple, and when the insufficient pressure of tire, tire is pressed flatly.At this moment the deflection of inside and outside tire is all very big.The moving circle of wheel revolution, each position of tire all significantly distortion once, the pressure of tire is more low, the deflection of tire and cause that cal val is also more big because of distortion, friction.This situation time has been grown, and therefore the rubber of tire can produce tired, and then blast.So the tire pressure step-down is the significant threat of traffic safety, particularly lorry.The reason of tire pressure step-down is many-sided, and some are arranged is long-standing " chronic diseases ", as valve blow-by, tire sand holes etc. is arranged.If the untimely discovery of these situations and processing meeting serious harm traffic safety.Be difficult to find also intractable if also have a situation not monitor.That is exactly that automobile is rolled tire by the sharp thing on the road surface in the process of moving, by after being rolled tire, if can not in time find just to be easy to cause the accident, and some trucks particularly.And in fact the tire on the automobile is the vitals of automobile, and it is bearing the weight of full automobile, also bears the burdensome task that drives and prevent automobile to advance, and whether its quality and interior pressure be normal, is directly connected to the safety of driving.So the dynamic monitoring of the air pressure in the motor tire is an important ring of guarantee driving safety.
For monitoring the interior pressure of motor tire at any time, wireless dynamic tyre pressure monitoring system is arranged in the prior art, the design of system is good.But this system exists some technical matterss not resolve.For example, the battery of this system, baroceptor and radio transmitter all are contained in the wheel inner face, and such structure is given and install, uses and maintenance has brought great difficulty.Devices such as radio transmitter are wanted consumed power, because the inconvenience management, this system have to start shooting in 24 hours, and the very fast consumption of battery is intact like this.Changing battery " goes to war " again.So the practicality of this system is not strong, be difficult to popularize.
Summary of the invention
In order to monitor the air pressure in the motor tire in the outside of motor tire at any time, that the present invention has used is very ripe, the failure-free ultrasonic technology is dirt cheap, and taked following measure: on the motor tire next door ultrasonic generator and ultrasonic receiver are installed, ultrasonic receiver connects amplifier, amplifier connects modulus (A/D) change-over circuit, and modulus (A/D) change-over circuit connects single board computer (SBC) (MCU).
The benefit of doing like this is can be in the motor tire outside, do not contact motor tire, do not change under the prerequisite of motor tire any structure, at any time the barometric information in " perception " motor tire, for traffic safety provides help, also made things convenient for simultaneously monitoring device installation, use and keep in repair.
Description of drawings
Fig. 1. ultrasonic generator and receptor scheme drawing are installed in the tire next door.
Among the figure: 1 ultrasonic generator and receptor, 2 tires.
The specific embodiment
Be to help the principle of work of reader understanding's this programme, the applicant thinks to be necessary to do in this respect that some are briefly bright.The principle of work of this programme is different from the ultrasonic imaging principle, and ultrasonic imaging mainly is to realize according to the time of backward wave.The present invention then mainly is based on the acoustics physical property of tire.The people who played musical instrument knows, the degree of tightness of the string in the stringed musical instrument has very big influence to tone, the tone color of this musical instrument.What the tuner was main is exactly tone and the tone color of adjusting musical instrument by the degree of tightness of adjusting string, has namely changed the instrumental acoustics characteristic.Tone is fundamental frequency, and tone color is harmonic wave; When people impacted string with dynamics in a like fashion, the different degrees of tightness of string had different tones and tone color.This programme designs with reference to this physical phenomenon just.
Its concrete principle of work is: send acoustic energy pulses with ultrasonic generator to motor tire, receive the echo of tire then by ultrasonic receiver.Tire resembles the string on the piano, and the high low energy of tire internal gas pressure changes the degree of tightness of tyre sidewall, has also namely changed the acoustics physical property of tire, as the degree of tightness that has changed string.When the acoustic energy pulses of sending when ultrasonic generator ran into surface of tyre, the surface of tire was partly reflected it, formed echo.Because the acoustic energy pulses that ultrasonic generator sends is not sinusoidal waveform, so this pulse has comprised very abundant high order harmonic group.Through the frequency spectrum analyzer checking, tire has different acoustics physical propertys under different air pressure situations.To each frequency among these high order harmonics group, in various degree absorptivity and rate reflectivity are arranged.In other words be exactly tire under different air pressure situations, this ultrasonic echo has distortion in various degree, and its distortion can reflect the degree of tightness of tyre sidewall, the just height of tire internal gas pressure truly.Through the experiment, its sensitivity volume at hypracoustic than low-frequency range.Therefore, as long as we compare, analyze, handle the vocal print of echo, just can obtain the information of tire internal air pressure.This principle resembles experienced master worker, only impacts tire with rod, just the interior pressure situation that can just know tire with sound whether normally principle be similar.
In Eltec highly developed today, with single board computer (SBC) (MCU) echo of tire reflection is analyzed, compared and judges, be one and be very easy to and a piece of cake.And, can satisfy technical requirements and the combination of the circuit form of the single board computer (SBC) that produces a desired effect and other circuit very many; This programme does not have specific (special) requirements to single board computer (SBC), all is fit to this programme use as long as possess the single board computer (SBC) of functions such as data storage, data and logic analysis, arithmetic capability.To analyze, handle than equity the echo of tire reflection with single board computer (SBC) (MCU), at first will obtain the vocal print electric signal of this echo.Technology, device and the combination of circuits that can obtain ultrasonic echo vocal print electric signal are diversified.For example be example with the ultrasonic generator, it can be divided into electric and mechanical two big classes, and each class is divided into multiple different form, for example monocrystalline and twin crystal etc. again.This programme does not have specific (special) requirements to ultrasonic generator, as long as ultrasonic generator existing or that can launch ultrasonic pulse in the future in the technology all is fit to this programme use.Ultrasonic receiver has different types, structure and form equally, this programme does not have specific (special) requirements equally to ultrasonic receiver, existing or in the future in the technology, as long as can receive the ultrasonic pulse echo, and can all be fit to this programme use to the ultrasonic receiver that it becomes electric signal.
The working process of this programme is: the ultrasonic generator coupled system need send ultrasonic pulsative signal to motor tire, a part of energy of this signal is reflected by tire.When the super sonic that is reflected by tire arrived ultrasonic receiver, its sound mechanical energy was converted into electric energy.So since this electric signal very faint it be sent to amplifier and amplify.Ultrasonic electrical signal after amplifying is analog signal, and sort signal is not easy to computing machine identification and handles, and for ease of computing machine identification and processing, must be this signal transition digitized vocal print electric signal.So just this signal is delivered to modulus (A/D) change-over circuit, output is exactly the digitalisation vocal print electric signal of this ultrasonic echo after the analog to digital conversion circuit conversion.This digital signal is delivered to single board computer (SBC).Single board computer (SBC) can be divided into digital and analog to the processing means of vocal print electric signal.Digital Application on Voiceprint Recognition circuit and analog Application on Voiceprint Recognition both circuits have multiple version separately again.For example digital Application on Voiceprint Recognition circuit can be undertaken by digital filter the processing of vocal print.Digital filter can realize catching the vocal print signal characteristic by software or hardware again, by single board computer (SBC) these vocal print features is analysed and compared.Or the data of the echo vocal print of this kind motor tire of storage in this digital voice print electric signal and the single board computer (SBC) (MCU) being depressed in different by single board computer (SBC) or the vocal print feature exclusive disjunction of directly comparing, the exclusive disjunction of the original vocal print signal of storing in the digitalisation vocal print electric signal of this ultrasonic echo and the single board computer (SBC) (MCU) from ultrasonic generator can also being compared.This several method can be learnt the air pressure situation in the tire equally.After obtaining comparison result, single board computer (SBC) sends prompting by the form of sound or literal to the driver, and for example air pressure is too high, air pressure is moderate, air pressure is low slightly, air pressure is on the low side, air pressure is low excessively, air pressure is crossed low danger etc.
Claims (1)
1. vocal print air pressure of automobile tire monitoring device, mainly comprise ultrasonic generator, ultrasonic receiver, amplifier, D/A converting circuit and single board computer (SBC), it is characterized in that: on the motor tire next door ultrasonic generator and ultrasonic receiver are installed, ultrasonic receiver connects amplifier, amplifier connects modulus (A/D) change-over circuit, and modulus (A/D) change-over circuit connects single board computer (SBC) (MCU).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310314421.7A CN103332074B (en) | 2013-07-24 | 2013-07-24 | Vocal print pressure monitoring device for tyre of vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310314421.7A CN103332074B (en) | 2013-07-24 | 2013-07-24 | Vocal print pressure monitoring device for tyre of vehicle |
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| Publication Number | Publication Date |
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| CN103332074A true CN103332074A (en) | 2013-10-02 |
| CN103332074B CN103332074B (en) | 2016-05-11 |
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| CN201310314421.7A Expired - Fee Related CN103332074B (en) | 2013-07-24 | 2013-07-24 | Vocal print pressure monitoring device for tyre of vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105459740A (en) * | 2015-12-31 | 2016-04-06 | 清华大学苏州汽车研究院（吴江） | Intelligent tire auxiliary diagnosis system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001138722A (en) * | 1999-11-18 | 2001-05-22 | Yoichi Ito | Monitoring device for state of vehicle wheel part |
| US20030201880A1 (en) * | 2002-04-10 | 2003-10-30 | Chun-Ming Lu | Automobile flat tires/blowout alert system |
| KR20080006511U (en) * | 2007-06-20 | 2008-12-24 | 정석훈 | Tire abrasion alarm |
| CN201366912Y (en) * | 2009-03-13 | 2009-12-23 | 陕西科技大学 | Tyre air leakage detection device based on no-load ultrasonic |
| CN203391575U (en) * | 2013-07-24 | 2014-01-15 | 胡达广 | Air pressure monitoring device for voiceprint car tyre |
-
2013
- 2013-07-24 CN CN201310314421.7A patent/CN103332074B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001138722A (en) * | 1999-11-18 | 2001-05-22 | Yoichi Ito | Monitoring device for state of vehicle wheel part |
| US20030201880A1 (en) * | 2002-04-10 | 2003-10-30 | Chun-Ming Lu | Automobile flat tires/blowout alert system |
| KR20080006511U (en) * | 2007-06-20 | 2008-12-24 | 정석훈 | Tire abrasion alarm |
| CN201366912Y (en) * | 2009-03-13 | 2009-12-23 | 陕西科技大学 | Tyre air leakage detection device based on no-load ultrasonic |
| CN203391575U (en) * | 2013-07-24 | 2014-01-15 | 胡达广 | Air pressure monitoring device for voiceprint car tyre |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105459740A (en) * | 2015-12-31 | 2016-04-06 | 清华大学苏州汽车研究院（吴江） | Intelligent tire auxiliary diagnosis system |
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| CN103332074B (en) | 2016-05-11 |
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Inventor after: Hao Lianghuan Inventor after: Hu Daguang Inventor before: Hu Daguang |
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Effective date of registration: 20160413 Address after: 523051 Guangdong city of Dongguan province Dongcheng District District No. 42 West Haruki Zhang Fang Applicant after: Lu Bixian Address before: Guangdong province Dongguan City Wanjiang 523051 liuyongwei Fen Xi Lu Nan Yi Xiang No. 6 three Applicant before: Hu Daguang |
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Inventor after: Li Qinqin Inventor before: Hao Lianghuan Inventor before: Hu Daguang |
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Effective date of registration: 20161222 Address after: 510665 Guangdong city of Guangzhou province Tianhe District Software Park Building No. 59 Middle East block, Grand Building Room 501 Patentee after: Guangdong million cattle Intellectual Property Operation Co., Ltd. Address before: 523051 Guangdong city of Dongguan province Dongcheng District District No. 42 West Haruki Zhang Fang Patentee before: Lu Bixian |
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Effective date of registration: 20170526 Address after: 510000 Guangdong city of Guangzhou Province Huang Yuan Lu Ma Wu and Baiyun District Industrial Zone No. 301 by D7 Patentee after: Guangzhou Zhenye CaMon automotive products Co. Address before: 510665 Guangdong city of Guangzhou province Tianhe District Software Park Building No. 59 Middle East block, Grand Building Room 501 Patentee before: Guangdong million cattle Intellectual Property Operation Co., Ltd. |
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