CN108180967A - A kind of vehicle dynamic weighing system and its cheat detection method based on audio auxiliary - Google Patents
A kind of vehicle dynamic weighing system and its cheat detection method based on audio auxiliary Download PDFInfo
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- CN108180967A CN108180967A CN201711435817.1A CN201711435817A CN108180967A CN 108180967 A CN108180967 A CN 108180967A CN 201711435817 A CN201711435817 A CN 201711435817A CN 108180967 A CN108180967 A CN 108180967A
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- 238000005303 weighing Methods 0.000 title claims abstract description 167
- 238000001514 detection method Methods 0.000 title claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 44
- 238000004458 analytical method Methods 0.000 claims abstract description 27
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 230000005236 sound signal Effects 0.000 claims description 45
- 230000009191 jumping Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 230000001256 tonic effect Effects 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 230000011218 segmentation Effects 0.000 claims description 6
- 230000010354 integration Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 2
- 230000006399 behavior Effects 0.000 description 11
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- 238000012360 testing method Methods 0.000 description 3
- 230000004069 differentiation Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/02—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles
- G01G19/03—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing during motion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
- G10L25/51—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination
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- Acoustics & Sound (AREA)
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Abstract
The present invention provides a kind of vehicle dynamic weighing system based on audio auxiliary, it is provided with Audio feature analysis equipment, weighing platform of weighing, grating and divides vehicle device and weighing controller, Audio feature analysis equipment includes audio collection module, analog-to-digital conversion module, audio processing modules, logic discrimination module；A kind of vehicle dynamic weighing cheat detection method assisted based on audio is also provided, by acquiring and analyzing vehicle by the sound characteristic generated during dynamic weighing platform, realizes the judgement that scale, point brake cheating traveling means are jumped for vehicle.The present invention is realized in the case where being participated in without special messenger, the detection to vehicle dynamic weighing cheating driving behavior, improves the reliability of vehicle dynamic weighing system.
Description
Technical field
The present invention relates to Vehicle weigh-in-motion technology fields, and in particular, to a kind of vehicle dynamic based on audio auxiliary
Weighing system and its cheat detection method.
Background technology
Dynamic automobile scale is the vehicle dynamic weighing system for being now widely used for field of traffic, utilizes weighing sensor
And related weighing algorithm completes the acquisition to information such as the weight, vehicle, spindle-type of the vehicle in traveling.Its information got
Highway administration department will be helped, which to carry out processing, the whole process such as charging, overload and oversize inspection to vehicle, vehicle to be kept to travel
And without parking.For this purpose, dynamic automobile scale needs to install weigh weighing platform, grating vehicle separating device, weighing controller etc. in enforcement place
Equipment.
The accuracy of detection of existing dynamic automobile scale and the transport condition of vehicle are closely related, if vehicle is in uniform rectilinear
During motion state, weighing precision highest；When accelerating (jump scale) suddenly when vehicle is starting to drive into weighing platform or when vehicle is in sight
When slowing down suddenly when will be driven out to weighing platform and (putting and stop), truck scale is all likely to occur partially light knot for the testing result of vehicle weight
Fruit.Therefore, scale is stopped and jumped to point becomes vehicle common fraudulent means when weighing, and affecting the normal of dynamic automobile scale makes
With.
Invention content
The main purpose of the embodiment of the present invention be to provide a kind of vehicle dynamic weighing system assisted based on audio and its
Cheat detection method is stopped with the point for solving existing vehicle dynamic weighing system None- identified vehicle, jumps the fraudulent means such as scale
Defect.
To achieve the above object, the embodiment of the present invention provides a kind of vehicle dynamic weighing system based on audio auxiliary and includes
It weighs weighing platform, Audio feature analysis equipment, Audio feature analysis equipment is provided with audio collection module, analog-to-digital conversion module, sound
Frequency processing module, logic discrimination module；
Audio collection module passes through audio signal during weight scale taiwan area domain for collection vehicle；
Analog-to-digital conversion module is connect with audio collection module, for the audio signal that audio collection module obtains to be converted into
Digital audio and video signals；
Audio processing modules are connect with analog-to-digital conversion module, are filtered for digital audio and video signals to be carried out with noise suppressed with high pass
Wave handles to obtain tonic train；
Logic discrimination module is connect with audio processing modules, for being made energy calculation to tonic train, and according to energy
Height judgement vehicle is travelled with the presence or absence of cheating.
As preference, tonic train is also carried out audio parsing processing by audio processing modules.
As preference, the vehicle dynamic weighing system based on audio auxiliary further includes grating and divides vehicle device, with audio spy
Levy analytical equipment connection, acquisition of the control Audio feature analysis equipment to audio signal.
As preference, the vehicle dynamic weighing system based on audio auxiliary further includes weighing controller, weighing controller
Vehicle device is divided to connect with weighing platform of weighing, grating, receive the vehicle weighing information for vehicle device being divided to obtain with grating from weighing platform of weighing.
As preference, weighing controller is connect with Audio feature analysis equipment, receive from Audio feature analysis equipment
The vehicle audio information of acquisition and cheating running condition information.
As preference, the vehicle dynamic weighing system based on audio auxiliary is by obtaining vehicle weighing information, vehicle sound
It frequency information and practises fraud and running condition information and carries out integration processing, obtain the vehicle dynamic weighing synthesis letter that this system is exported
Breath.
The present invention also provides a kind of vehicle dynamic weighing cheat detection methods based on audio auxiliary, which is characterized in that packet
Include following steps,
S1：Audio during to vehicle by weight scale taiwan area domain is acquired；
S2：Collected audio signal is handled；
S3：To treated, audio signal carries out audio signal segmentation；
S4：Audio power calculating is carried out to segmentation audio signal and judges vehicle with the presence or absence of cheating transport condition.
As preference, step S2 includes：
Noise suppressed processing is carried out to audio signal, retains the sound component that vehicle is generated by weighing platform of weighing；
High-pass filtering processing is carried out to audio signal, obtains the high fdrequency component of audio signal, high fdrequency component, which contains, to be sentenced
Whether other vehicle practises fraud the acoustic information of traveling.
As preference, step S3 is by step S2, treated that audio signal is divided into upper scale section audio and lower scale section audio；
Upper scale section audio includes the period that vehicle has just driven into weighing platform of weighing, this section audio whether there is for detecting vehicle
Jump the behavior of scale；
Lower scale section audio includes the period that vehicle is driven out to from weighing platform of weighing, this section audio whether there is for detecting vehicle
The behavior that point is stopped.
As preference, step S4 makes energy calculation and sentences to scale section audio on step S3 and lower scale section audio
Fixed, determination method is as follows：
If upper scale section audio energy is higher than normal pass audio power, judge that vehicle takes the driving mode for jumping scale；
If lower scale section audio energy is higher than normal pass audio power, judge that vehicle takes the driving mode stopped.
The sound sent out by means of above-mentioned technical proposal, the present invention by acquiring, handling vehicle by dynamic weighing platform
Sound, scale section and the energy of lower scale section audio signal in calculating, to judge vehicle whether in cheating transport condition.Compared to existing
Technology, invention are realized in the case where being participated in without special messenger, and the detection to vehicle dynamic weighing cheating driving behavior improves vehicle
The reliability of dynamic weighing system.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, embodiment will be described below
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the structure diagram of Audio feature analysis equipment provided by the invention；
Fig. 2 is the flow diagram of vehicle dynamic weighing cheat detection method provided by the invention assisted based on audio；
Fig. 3 is the schematic diagram of the vehicle dynamic weighing system provided by the invention assisted based on audio.
Reference numeral：
11st, audio collection module
12nd, analog-to-digital conversion module
13rd, audio processing modules
14th, logic discrimination module
31st, it weighs weighing platform
32nd, grating divides vehicle device
33rd, Audio feature analysis equipment
34th, weighing controller
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
Embodiment one：
As shown in Figure 1, Figure 3, Audio feature analysis equipment 33 includes：Audio collection module 11, for from weighing platform 31 of weighing
Region collection vehicle by when the sound that sends out；Analog-to-digital conversion module 12 is electrically connected with audio collection module 11, for by sound
The audio signal for the simulation that frequency acquisition module 11 obtains is converted to digital audio and video signals；Audio processing modules 13 and analog-to-digital conversion mould
Block 12 is electrically connected, and the digital audio and video signals for being converted to analog-to-digital conversion module 12 carry out noise suppressed processing, and carry out height
Pass filter processing differentiates for subsequent logic；Logic discrimination module 14 is electrically connected with audio processing modules 13, for sound
Whether treated that audio signal makes energy calculation for frequency processing module 13, and judge vehicle in cheating traveling shape according to energy
State.
The major function that audio collection module 11 is realized is converted into the audio signal in ambient enviroment is distortionless
Analog electrical signal, and the maximum input range of audio collection module 11 cannot be below the maximum dynamic range of live sound.Simulation
Electric signal can be voltage signal or current signal, and amplitude and the voice signal amplitude acquired are linearly related.
In specific embodiment, professional recording microphone or the use audio for special designing may be used in audio collection module 11
The audio collection card that sensor and associated support circuitry are formed, audio collection module 11 can be positioned over the vehicle for weighing platform 31 of weighing
Beside road or it is integrated in and weighs in 31 structure of weighing platform.
Analog-to-digital conversion module 12 reads the analog electrical signal that audio collection module 11 generates, and passes through inside modules circuit or core
Analog electrical signal is converted to digital audio and video signals by the conversion of piece, i.e., after a series of quantization encodings in chronological sequence to sort
Sequence of values.In sequence of values, the size of each numerical point is the amplitude for the voice signal for characterizing corresponding time point.Specific
In embodiment, modulus conversion chip (Analog-to-Digital Converter, ADC) can be used in analog-to-digital conversion module 12
And associated support circuitry is built.The sample rate of modulus conversion chip must satisfy nyquist sampling law, i.e. sample rate
It necessarily is greater than twice of the main frequency of collected audio signal.Also, the resolution ratio of modulus conversion chip must reach capture
The minimum requirements of collected audio signal major part feature, i.e. digital audio and video signals can correctly restore to be adopted after digital-to-analogue conversion
The audio signal of collection.
After audio processing modules 13 read digital audio and video signals, noise suppressed processing is carried out to it first, to filter out number
Ambient noise in audio signal passes through the audio component weighed caused by weighing platform so as to obtain in voice signal as vehicle.It
Afterwards, audio processing modules 13 will carry out audio signal high-pass filtering processing, and will treated tonic train in chronological sequence
It is divided into scale section and lower scale section two parts, is respectively used to jump scale with putting the differentiation of brake fraudulent means.
Logic discrimination module 14 reads the upper scale section audio sequence of the transmission of audio processing modules 13 and lower scale section audio respectively
Sequence calculates its signal energy.In a particular embodiment, the height of signal energy can be by the amplitude height of audio signal
It characterizes, reference standard is formulated according to the test data of normal pass vehicle, after tested, 6 axis lorries of conventional 50 tons of gross weight are made
The peak swing of disadvantage signal is usually normal cross vehicle signal peak swing 4-5 times, it is possible to think the signal more than 3-4 times
All it is the signal of cheating vehicle；When the peak swing of scale section audio sequence on 6 axis lorries of conventional 50 tons of gross weight is higher by positive normal open
3-4 times of driving peak swing then judges that vehicle has the cheating traveling behavior for jumping scale；When 6 axis goods of conventional 50 tons of gross weight
The peak swing of scale section audio sequence is higher by 3-4 times of normal pass vehicle under vehicle, then judges that vehicle has the cheating that point is stopped
Traveling behavior provides the differentiation result of vehicle traveling cheating state with this.
In a particular embodiment, audio processing modules 13 can build circuit in fact respectively with logic discrimination module 14
It is existing, it can also be combined into one and be realized using unified digital signal processing platform.Digital signal processing platform includes but unlimited
In based on field programmable gate array (Field-Programmable Gate Array, FPGA) or digital signal processing chip
The hardware platform of (Digital Signal Processing, DSP).
Embodiment two：
As shown in Fig. 2, a kind of flow of the vehicle dynamic weighing cheat detection method based on audio auxiliary includes：
S1：When vehicle is by being acquired audio signal during weight scale taiwan area domain；
S2：Noise suppressed processing is carried out to collected audio signal, only retains vehicle and passes through sound caused by weighing platform
Component；
S3：High-pass filtering processing is carried out to audio signal, obtains the high fdrequency component of voice signal, high fdrequency component contains again
The relevant most of acoustic information of vehicle cheating；
S4：To treated, audio signal carries out audio signal segmentation processing, is divided into upper scale section audio under according to the time
Scale section audio；
S5：Audio power calculating is carried out to upper scale section audio signal and lower scale section audio signal；
S6：Judge vehicle with the presence or absence of cheating traveling behavior according to result of calculation.
Step S2 handles the noise suppressed of audio signal, and main purpose is the digital audio and video signals for generating ADC conversions
In background noise filter out, only retain and sound component caused by weighing platform of weighing passed through as vehicle.In specific embodiment
In, noise suppressed processing is normalized firstly the need of to digital audio and video signals, then use with kayser window filter or
Digital signal processing based on wavelet transformation carries out.Wherein：
It is best with the effect of bandpass filter in processing method based on kaiser window function filter, it can be utmostly
Removal noise and retain useful signal；
Wavelet transformation has multi-resolution characteristics, and more points to signal can be realized by movement, compressed wavelet basic function
Resolution is analyzed.It is preferable by can reach after third time wavelet transform procedure for Daubechies wavelet shapes
Waveform separating effect can extract vehicle by sound caused by weighing platform of weighing on corresponding time point, and can be compared with
Good inhibition ambient noise.
Step S3 carries out audio signal high-pass filtering processing, and main purpose is that extraction vehicle passes through sound produced by weighing platform
High fdrequency component.Due to vehicle by jump scale or point stop when practise fraud driving mode by weigh weighing platform when, produced sound
High fdrequency component energy will be far above the high fdrequency component energy of sound produced by normally travel vehicle, therefore obtain the high frequency division of sound
It measures and analyzes its energy traveling that whether can practise fraud to vehicle and judge.
Step S4 to audio signal segmentation processing, the sound that main purpose generates when being and each car being passed through weighing platform according to when
Between be successively divided into scale section audio and lower two parts of scale section audio.Wherein, upper scale section audio is mainly just sailed including vehicle
Enter the period of weighing platform, this section audio is used to detect vehicle with the presence or absence of the cheating traveling behavior for jumping scale；Lower scale section audio is main
Including the period that vehicle is driven out to from weighing platform, this section audio is used to detect the cheating that vehicle is stopped with the presence or absence of point.
In specific embodiment, upper scale section audio can intercept preceding 1/4 data segment of the whole audio data of each car, lower scale Duan Yin
Frequency can intercept rear 1/3 data segment of the whole audio data of each car.
Step S5 will divide upper scale section audio energy balane, lower scale section audio energy balane in read step S4 respectively
The upper scale section audio and lower scale section audio cut, calculates its audio signal energies, audio signal energies can be by audio signal
Peak swing characterize.
Step S6 carries out jumping scale logic by the upper scale section audio calculated in step S5 and the height of lower scale section audio energy
Judge and put brake logic judgment, make vehicle cheating judgement.In a particular embodiment, it can be passed through with a large amount of normal vehicles
Average audio energy as reference, according to test statistics, 6 axis lorries of conventional 50 tons of gross weight jump scale signal and put brake signal
Peak swing, usually normal cross vehicle signal peak swing 4-5 times, so it is more than that normal vehicle of crossing is believed to think when judgement
3-4 times of audio signal of number peak swing is all the signal of vehicle of practising fraud.As scale Duan Yin on 6 axis lorries of conventional 50 tons of gross weight
Frequency peak swing is higher than 3-4 times of normal pass audio peak swing, then judges that vehicle takes cheating driving mode, that is, jump
Scale；Correspondingly, if scale section audio peak swing is higher than normal pass audio peak swing under 6 axis lorries of conventional 50 tons of gross weight
3-4 times, then judge that vehicle takes cheating driving mode, i.e., point is stopped.
It can also be judged in the present embodiment according to the cheating given by step S6 as a result, taking corresponding alarming processing.
In a particular embodiment, if vehicle there is no cheating traveling behavior, do not take alarming processing, allow vehicle normal through.
If vehicle has the cheating traveling behavior that scale was stopped or jumped to point, cheating alarm letter is sent out to control host (such as weighing controller 34)
Number, to site operation personnel's offer cheating information alert or further, the weighing results of cheating vehicle are corrected to be allowed to restore
Normal weighing results.
Embodiment three：
As shown in Figure 1,3, the present embodiment provides a kind of vehicle dynamic weighing system based on audio auxiliary, including weight scale
Platform 31, for obtaining the weight information that weighing platform is born；Grating divides vehicle device 32, for that will be distinguished by the vehicle for weighing platform 31 of weighing
It opens；Audio feature analysis equipment 33, for acquire, handle vehicle by when the sound that sends out, to judge vehicle whether in making
Disadvantage transport condition；Weighing controller 34 for obtaining the vehicle weight information by weighing platform, and analyzes the weight that weighing platform is born of weighing
Measure information, further according to vehicle cheating whether, decide whether to send out warning information.
Weighing platform 31 of weighing mainly is made of main scale body, weighing sensor, trigger etc., and multiple titles are installed below main scale body
Retransmit sensor and trigger, main scale body is the weight bearing body of weighing platform of entirely weighing, and can allow the vehicle in single track from title
The top of weight weighing platform 31 passes through, when vehicle above weighing platform 31 of weighing by when, the weight of vehicle will be directly to weighing sensor
Pressure is formed, pressure conversion is voltage signal by weighing sensor, and to obtain vehicle weight information, vehicle weight information is mainly wrapped
Include vehicle wheel weight, axis weight, axis group weight, the vehicle information such as again；Trigger be then vehicle by weigh weighing platform 31 when detect vehicle
The sensor of wheel shaft mainly obtains the axle information of vehicle, including axle speed, spindle-type etc., for asessory shaft weight, axis group weight and
The calculating of complete vehicle weight.
Grating divides vehicle device 32, the track arrival end for weighing platform 31 of weighing is positioned over, using the principle of laser detection to passing through
Weigh weighing platform 31 vehicle carry out separating treatment.When vehicle, which drives into, weighs weighing platform 31, car body blocks grating and divides vehicle device 32, light
Grid divide the laser signal that the receiving terminal of vehicle device 32 can not receive transmitting terminal generation.Similar, when vehicle sails out of weighing platform of weighing
When 31, car body no longer blocks grating and divides vehicle device 32, and grating divides the receiving terminal of vehicle device 32 to receive laser signal again, according to
Whether grating divides the vehicle device 32 to receive laser signal, it will be distinguished by each car of weighing platform.
Audio feature analysis equipment 33, for acquire, handle vehicle by when the sound that sends out, to judge whether vehicle is located
In cheating transport condition.Its specific embodiment may refer to the specific reality of the Audio feature analysis equipment of the offer of embodiment one
Mode is applied, concrete operating principle may refer to the vehicle dynamic weighing assisted based on audio the cheating inspection of the offer of embodiment two
Survey method, details are not described herein again.
Weighing controller 34 is the control centre of entire vehicle dynamic weighing system.Its 31 He of comprehensive analysis weighing platform
Grating divides the various information of vehicles given by vehicle device 32, calculate the axis weight of each car for being given by weighing platform, axis group weight and
Complete vehicle weight information.Judge in addition, weighing controller 34 also practises fraud the vehicle that reading Audio feature analysis equipment 33 is provided
Information to decide whether to send out cheating alarm signal, to site operation personnel's offer cheating information alert or further, is repaiied
The weighing results of positive cheating vehicle are normal to be allowed to recovery.
The workflow of vehicle dynamic weighing system based on audio auxiliary is as follows：Vehicle by weigh weighing platform 31 when, it is first
First triggering grating divides vehicle device 32, and grating divides vehicle device 32 that scale status information on vehicle is passed to weighing controller 34, weighs
Controller 34 controls Audio feature analysis equipment 33 to start collecting vehicle road sound.Then, vehicle gradually passes through weighing platform 31 of weighing, and claims
Retransmitting the pressure that sensor is subject to increases, and the voltage signal generated also accordingly increases, and information of voltage is transferred to Weighing control
Device 34, to obtain the load capacity for weighing platform 31 of currently weighing.At the same time, when each axis of vehicle presses through trigger institute in place
When putting, trigger provides corresponding trigger signal, and transfers signals to weighing controller 34, to obtain the wheel shaft of vehicle letter
Breath.When vehicle sails out of weighing platform 31, grating divides vehicle device 32 to finish up, and vehicle completes lower scale, and vehicle does not block grating and divides vehicle
Equipment 32 then judges that vehicle leaves, and scale status information under vehicle is passed to weighing controller 34, weighing controller 34 controls sound
Frequency signature analysis equipment 33 stops collecting vehicle road sound.Under vehicle after scale, Audio feature analysis equipment 33 is according to collected sound
Message ceases, and is determined to whether vehicle practises fraud, and judgement result is passed to weighing controller 34.Weighing controller 34 integrates
Weighing sensor, trigger, grating divide vehicle wheel weight, axis weight, axis group weight, vehicle weight, vehicle, the axis given by vehicle device 32
The vehicle cheating state determination results information that the information such as type, speed and Audio feature analysis equipment 33 provide, finally obtains just
True vehicle weight information and cheating information.
In a particular embodiment, the vehicle dynamic weighing system based on audio auxiliary passes through weighing platform 31, the grating of weighing
Divide vehicle device 32, Audio feature analysis equipment 33 to obtain vehicle weighing information, vehicle audio information and cheating transport condition letter
It ceases and passes through weighing controller 34 and carry out integration processing, different energy can be formulated according to different automobile types in logic discrimination module 14
Reference standard is measured, the vehicle weighing information of integration is then transferred to snoop logic discrimination module 14 by weighing controller 34, and logic is sentenced
Other module 14 transfers the energy reference standard of corresponding vehicle according to vehicle weighing information, and final vehicle dynamic weighing is obtained with this
Integrated information.
In a particular embodiment, weighing controller 34 can be taken corresponding according to vehicle dynamic weighing integrated information
Alarming processing or allow vehicle pass-through, if there is no cheating traveling behaviors for vehicle, do not take alarming processing, allow the positive normal open of vehicle
It crosses；If vehicle has the cheating traveling behavior that scale was stopped or jumped to point, cheating alarm signal is sent out, work is provided to site operation personnel
Disadvantage information alert or further corrects the weighing results of cheating vehicle to be allowed to restore normal weighing results.
In conclusion a kind of vehicle dynamic weighing system and its cheating based on audio auxiliary provided in an embodiment of the present invention
Detection method has the advantages that：
(1) acquired using Audio feature analysis equipment and analyze vehicle by weigh weighing platform when the sound characteristic that generates, it is real
Referring now to the real-time detection for jumping scale, point brake cheating traveling means so that cheating of weighing can timely be found；
(2) entire anti-cheating workflow full utilization automation equipment is completed, without additional artificial participation；
(3) operation principle of the vehicle dynamic weighing cheat detection method based on audio auxiliary is calculated with specific weighing principle
Method is not linked up with, and such cheat detection method can be applied to a variety of automobile dynamically weighing platforms, such as single weighing platform, conjuncted scale, axis
Group scale etc., has higher adaptability.
Particular embodiments described above has carried out the purpose of the present invention, technical solution and advantageous effect further in detail
Describe in detail it is bright, it should be understood that the above is only a specific embodiment of the present invention, the guarantor being not intended to limit the present invention
Range is protected, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in this
Within the protection domain of invention.
Claims (10)
1. a kind of vehicle dynamic weighing system based on audio auxiliary, including weighing platform of weighing, which is characterized in that further included audio
Signature analysis equipment, the Audio feature analysis equipment are provided with audio collection module, analog-to-digital conversion module, audio frequency process mould
Block, logic discrimination module；
The audio collection module passes through the audio signal during weight scale taiwan area domain for collection vehicle；
The analog-to-digital conversion module is connect with the audio collection module, for the sound for obtaining the audio collection module
Frequency signal is converted into digital audio and video signals；
The audio processing modules are connect with the analog-to-digital conversion module, for carrying out noise suppressed to the digital audio and video signals
It handles to obtain tonic train with high-pass filtering；
The logic discrimination module is connect with the audio processing modules, for being made energy calculation to the tonic train, and
According to energy height judgement vehicle with the presence or absence of the state of cheating traveling.
2. the vehicle dynamic weighing system according to claim 1 based on audio auxiliary, which is characterized in that at the audio
It manages module and the tonic train is also subjected to audio parsing processing.
3. the vehicle dynamic weighing system according to claim 1 or 2 based on audio auxiliary, which is characterized in that further include
Grating divides vehicle device, and the grating divides vehicle device to be connect with the Audio feature analysis equipment, controls the Audio feature analysis
Acquisition of the equipment to audio signal.
4. the vehicle dynamic weighing system according to claim 3 based on audio auxiliary, which is characterized in that further include and weigh
Controller, the weighing controller divide vehicle device to connect with the weighing platform of weighing, the grating, receive from the weighing platform of weighing
Divide the vehicle weighing information of vehicle device acquisition with the grating.
5. the vehicle dynamic weighing system according to claim 4 based on audio auxiliary, which is characterized in that the control of weighing
Device processed is connect with the Audio feature analysis equipment, receives the vehicle audio information obtained from the Audio feature analysis equipment
And cheating running condition information.
6. the vehicle dynamic weighing system according to claim 5 based on audio auxiliary, which is characterized in that by obtaining
It states vehicle weighing information, the vehicle audio information, the cheating running condition information and carries out integration processing, obtain the base
In the vehicle dynamic weighing integrated information that the vehicle dynamic weighing system of audio auxiliary is exported.
7. a kind of vehicle dynamic weighing cheat detection method based on audio auxiliary, which is characterized in that include the following steps,
S1：Audio during to vehicle by weight scale taiwan area domain is acquired；
S2：Collected audio signal is handled；
S3：To treated, audio signal carries out audio signal segmentation；
S4：Audio power calculating is carried out to segmentation audio signal and judges vehicle with the presence or absence of cheating transport condition.
8. the vehicle dynamic weighing cheat detection method according to claim 7 based on audio auxiliary, which is characterized in that step
Rapid S2 includes：
Noise suppressed processing is carried out to the audio signal, retains the sound component that vehicle is generated by the weighing platform of weighing；
High-pass filtering processing is carried out to the audio signal, obtains the high fdrequency component of the audio signal, the high fdrequency component packet
Having contained can differentiate whether vehicle practises fraud the acoustic information of traveling.
9. the vehicle dynamic weighing cheat detection method according to claim 8 based on audio auxiliary, which is characterized in that step
Treated that the audio signal is divided into upper scale section audio and lower scale section audio by step S2 by rapid S3；
The upper scale section audio includes the period that vehicle drives into the weighing platform of weighing, this section audio is used to detect whether vehicle is deposited
In the behavior for jumping scale；
The lower scale section audio includes the period that vehicle is driven out to from the weighing platform of weighing, this section audio is used for whether detecting vehicle
In the presence of the behavior stopped.
10. the vehicle dynamic weighing cheat detection method according to claim 9 based on audio auxiliary, which is characterized in that
Step S4 makes energy calculation and judges to upper scale section audio and the lower scale section audio described in step S3, and determination method is such as
Under：
If the upper scale section audio energy is higher than normal pass audio power, judge that vehicle takes the driving mode for jumping scale；
If the lower scale section audio energy is higher than normal pass audio power, judge that vehicle takes the driving mode stopped.
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