CN109211327A - Non-contact vehicle state aware device and method thereof - Google Patents
Non-contact vehicle state aware device and method thereof Download PDFInfo
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Abstract
The technical issues of present invention provides a kind of non-contact vehicle state aware device and method thereof, which solve the acquisition equipment installations of existing vehicle-state inconvenient, information processing high efficiency and poor accuracy；Equipped with signal acquisition module, core processor module, wireless communication module and power module, wireless communication module, signal acquisition module, input module, display module and power module are connect with core processor module respectively, and power module is connect with vehicle power supply module；Signal acquisition module is equipped with vibration signals collecting module, sound signal collecting module and integrated navigation module；Core processor module, data for uploading signal acquisition module carry out information storage, analysis, fusion and diagnosis, and be packaged by wireless communication module transfer to cloud；Vehicle-state is alerted simultaneously, reminds driver vehicle that there are failures；The present invention is widely used in signals of vehicles acquisition, processing and analysis field.
Description
Technical field
The present invention relates to a kind of vehicle-state awareness apparatus, more particularly to a kind of non-contact vehicle state aware equipment
And its method.
Background technique
The prior art judges vehicle-state by acquisition mobile unit electric signal, needs electrically to be connect with vehicle arrangement
Touching.If equipment has reserved device signal acquisition port that can directly acquire signal, such as need to carry out without reserved device signal acquisition port
Doubling acquisition or switching, can impact vehicle arrangement.And the type and quantity of different vehicle equipment acquisition signal are not yet
Together, therefore substantially a kind of vehicle corresponds to a kind of acquisition equipment, is unable to General design, increases the difficulty of acquisition equipment modification.
Under new war form, accuracy and high efficiency of the ground mobile forces to the monitoring of weapon vehicle, scheduling, management
More stringent requirements are proposed.But that there is also automatization levels is low, information is imperfect, not firm to the acquisition for ensureing information for existing vehicle
When, inaccuracy the problems such as.Data are unable to on-line real time monitoring, cannot achieve real-time, the transparent and digital management of vehicle guarantee,
It may be unexpected by the vehicle requirements of support, thus the lasting fighting efficiency of support vehicles.
The two generation vehicles now largely used are without bus acquisition interface, in addition to power supply interface, it is also necessary to 4 to 5 acquisition instruments
The interface of disk signal, upper dress signal；When installation in addition to considering equipment installation position, also need to consider that cable wiring, interface core wire are fixed
Justice and signal spy card, and different model vehicle above-mentioned requirements are all different, need to carry out plus reequip to vehicle when acquiring vehicle data.But by
Cause each vehicle that need to formulate a set of plus refiting scheme in the difference of vehicle, army there are several hundred kinds of vehicles, therefore adds repacking difficult
It spends very big.There is an urgent need to a kind of general plus refiting schemes, can not only acquire car status information in real time, but also easy for installation.
Summary of the invention
The present invention inconvenient, the high efficiency of information processing and accuracy difference skill for the acquisition equipment installation of existing vehicle-state
Art problem provides a kind of easy for installation, information processing high efficiency and the good non-contact vehicle state aware equipment of accuracy
And its method.
For this purpose, the technical scheme is that, it is equipped with signal acquisition module, core processor module, wireless communication module
And power module, wireless communication module, signal acquisition module, input module, display module and power module are respectively and at core
The connection of device module is managed, power module is connect with vehicle power supply module；Signal acquisition module is equipped with vibration signals collecting module, sound
Signal acquisition module and integrated navigation module；
Core processor module, the data for uploading signal acquisition module carry out information storage, analysis, merge and examine
It is disconnected, and be packaged by wireless communication module transfer to cloud；Vehicle-state is alerted simultaneously, driver vehicle is reminded to exist
Failure；
Power module for power supply needed for input power is converted to each module, and then supplies whole equipment.
Preferably, integrated navigation module is equipped with Beidou, gyroscope and acceleration transducer.
Preferably, signal acquisition module is additionally provided with temperature-humidity signal acquisition module.
Preferably, it is additionally provided with input module, input module is for carrying out user's login, equipment record and log query.
Preferably, it is additionally provided with display module, display module is for showing equipment real-time status and checking maintenance log, note
Record.
The present invention also provides a kind of non-contact vehicle state aware method, step includes:
Step 1, vibration signal, voice signal, temperature-humidity signal and the operating state signal of vehicle are acquired；Operating status letter
Number include position, acceleration and posture information；
Step 2, the signal of acquisition is classified: slow varying signal, fast changed signal, and signal processing is carried out, it extracts effective
Information；
Vibration signal, temperature-humidity signal and operating state signal are slow varying signal, and voice signal is fast changed signal；
It step 3, will be through step 2 treated vibration, voice signal and operating state signal as input vector, with letter
Breath fusion judges vehicle-state；Using temperature-humidity signal, longitude and latitude signal as input vector, judge that vehicle is worked as with information fusion
Ground climate characteristic；Information fusion includes pixel-based fusion, feature-based fusion and decision level fusion.
Preferably for slow varying signal, pretreatment is taken to filter, filters out part interference signal, then supervise using radar signal
MN detection method in survey determines valid data.
Preferably for the vibration signal in fast changed signal and slow varying signal, using time-domain analysis, frequency-domain analysis and small echo
The feature of signal is extracted in analysis, establishes feature database, carries out classification using neural network and state judges.
Preferably, in step 3, vehicle-state includes travel condition of vehicle, and the judgement of travel condition of vehicle is specifically: passing through
Pixel-based fusion is used to vibration signal, position and attitude signal, feature-based fusion is used to voice signal, acceleration signal.
Preferably, in step 3, vehicle-state further includes whether vehicle is in the state of bombarding, and whether vehicle, which is in, is bombarded shape
The judgement of state is specifically: by using feature-based fusion to voice signal, vibration signal, then using the pattra leaves of decision level fusion
This estimation and fuzzy theory.
Beneficial effects of the present invention, equipment do not need to carry out electrical contact with vehicle, and undesired signal acquisition interface only needs
Power supply interface is installed on equipment on vehicle, easy for installation.By built-in sensors acquire the sound of vehicle, vibration, acceleration,
Posture, position signals accurately measure slow varying signal by the way of pretreatment filtering plus MN detection；For fast changed signal
The feature that signal is extracted using time-domain analysis, frequency-domain analysis, wavelet transformation mode is carried out classification using neural network and state is sentenced
It is disconnected.Using travel condition of vehicle signal, vibration, voice signal as input vector, is handled with Theory of Information Fusion and judge vehicle
State ensure that the accuracy and high efficiency of information processing.
Detailed description of the invention
Fig. 1 is the connection schematic diagram of present device；
Fig. 2 is signal processing flow figure of the invention；
Fig. 3 is Function of Information Fusion illustraton of model of the present invention.
Symbol description in figure
1. core processor module；2. wireless communication module；3. power module；4. vibration signals collecting module；5. combination
Navigation module；6.FPGA；7. acceleration transducer；8. Mike；9. Temperature Humidity Sensor；10. touch screen input module；11. pressing
Key input module；12. liquid crystal display display module.
Specific embodiment
The present invention is described further below with reference to embodiment.
As shown in Figure 1, the present invention is equipped with signal acquisition module, core processor module 1, wireless communication module 2, input mould
Block, display module and power module 3, wireless communication module 2, signal acquisition module, input module, display module and power module
3 connect with core processor module respectively, and power module 3 is connect with vehicle power supply module.
Signal acquisition module includes vibration signals collecting module 4, sound signal collecting module, integrated navigation module 5, warm and humid
Spend signal acquisition module.
Vibration signals collecting module 4 for acquiring the vibration signal of vehicle, and is exported to core processor module 1；Sound
Signal acquisition module for acquiring the voice signal of vehicle, and is exported to core processor module 1；Integrated navigation module 5 is used
In the operating state signal of acquisition vehicle, and export to core processor module 1；Temperature-humidity signal acquisition module, for acquiring
Temperature, the humidity information of vehicle, and export to core processor module 1.
Core processor module 1, for the data received to be carried out information storage, fusion, processing and analyzing and diagnosing, and
It is packaged module 2 by wireless communication and is transferred to cloud.Vehicle-state can be alerted simultaneously, driver vehicle is reminded to there is event
Hinder and on-call maintenance, driver oneself can repair or receive the maintenance direction that cloud issues, carries out equipment according to guidance
Maintenance work.
Power module 3 for power supply needed for the input power of 12-36V is converted to each module, and then is supplied and is entirely set
It is standby.
Vibration signals collecting module 4 includes the acceleration transducer 7 of FPGA6, two vertical arrangements, sound signal collecting mould
Block is equipped with Mike 8 and MIC circuit, and integrated navigation module 5 includes Beidou, gyroscope and acceleration transducer, and temperature-humidity signal is adopted
Integrate module as Temperature Humidity Sensor 9.
Input module is for carrying out user's login, equipment record and log query etc., including touch screen input module 10, presses
Key input module 11, touch screen input module 10, keyboard input module 11 are connected by USB interface.
Display module is used to the display of equipment real-time status and checks repair log, record etc., and display module is liquid crystal display
Display module 12.Liquid crystal display display module 12 is connected by LVDS interface with core processor module 1.
Core processor module 1 carries data memory module.
The present invention uses the principle of General design, and acquisition channel parameter and attribute can be arranged by software, including adopt
Collect range of signal, signal attribute, alarm threshold, conversion coefficient etc..It is directed to different vehicles, can configure different parameters.
As Figure 2-3, the cognitive method of this equipment, comprises the concrete steps that:
Step 1, vibration signal, voice signal, temperature-humidity signal and the operating state signal of vehicle are acquired, wherein operation
Status signal includes position, acceleration and posture information；
Step 2, the signal of acquisition is divided into two classes, voice signal is fast changed signal, vibration signal, temperature-humidity signal and fortune
Row status signal is slow varying signal；
A. for slow varying signal, pretreatment is taken to filter, filters out part interference signal, then using in radar signal monitoring
MN detection method determines valid data；
For example, for acceleration signal, extracts and be applied to vehicle since vehicle accelerates, slows down, turns left, turns right and bombards etc.
Acceleration, get rid of interference.
B. for the vibration signal in fast changed signal and slow varying signal, using time-domain analysis, frequency-domain analysis and wavelet analysis
The feature for extracting signal, establishes feature database, carries out classification using neural network and state judges；It is rejected and is interfered according to judging result
Signal.Wavelet analysis can combine the time domain and frequency domain characteristic of whole circulation fast changed signal, and can therefrom extract diagnostic sign million, from
And obtain the status information in complete job circulation；
For example, for voice signal, extract engine, bombard, the sound such as abnormal sound, weed out sound of the wind, voice and its
Its noise and interference.
Step 3, it using travel condition of vehicle signal, vibration and voice signal as input vector, merges and judges with information
Vehicle-state；Using temperature-humidity signal, longitude and latitude signal as input vector, judge that vehicle local climate is special with information fusion
Sign；
Information fusion includes pixel-based fusion, feature-based fusion and decision level fusion；Three kinds of amalgamation modes are not individually to make
With, but comprehensive progress.
Combining information blending theory and vehicle data feature, the vehicle-state monitoring method based on Multi-source Information Fusion, build
Vertical vehicle monitoring information fusion system structure.It forms multisensor syste by n sensor (or different diagnostic methods), mentions
For object and environmental information, m aggregators are set up in system, these information are merged.Sensor one, sensor two
Output information S1And S2New information S is fused into aggregators one12, then with the information of sensor three letter is fused into node two
Cease S123；So go down, the information obtained from n sensing system can finally be fused into result information S, and be sent into and melt
It closes in results repository, the information of vehicles fusion function model of foundation.
Vehicle-state includes whether travel condition of vehicle, vehicle are in the state of bombarding.
By sound, vibration, running state information come the state of comprehensive descision vehicle, pixel-based fusion (vibration is used
With Some vehicles running state information, Some vehicles operating state signal includes position, posture, and posture includes roll angle, pitching
Angle information) and feature-based fusion (extracting engine sound and effective acceleration information).It can be with by the fusions of these information
Judge that vehicle-state includes: that stationary vehicle does not start (no engine sound, without friction, without running state information), stationary vehicle
Starting (have engine sound, have vibration, without running state information) accelerates (have engine sound, have positive vibration, have operation
Status information), slow down (have engine sound, have reversal of vibrations, have running state information), climbing (have engine sound, have vibration
Move, have wide-angle forward direction posture information), descending (have engine sound, have vibration, have the reversed posture information of wide-angle) etc..
Judge whether vehicle is in the state of bombarding by sound, acceleration signal, uses feature-based fusion and decision
Grade fusion.It has any different when sound and acceleration are run with vehicle when due to bombarding, it is therefore desirable to which being extracted by feature-based fusion needs
The sound and vibration performance information wanted, then decision level fusion is judged using Bayesian Estimation with fuzzy theory；Because having
May be side vehicle bombarded or together bombard that sound is caused to be overlapped, need to identify, in this way it is possible to prevente effectively from
It judges by accident and fails to judge.Simultaneously with when actually bombarding sound characteristic and acceleration signature be compared, it can be determined that go out whether carry out
Bombard the type with shell.
Present device does not need to carry out electrical contact with vehicle, and undesired signal acquisition interface only needs power supply interface,
Equipment is installed on vehicle, easy for installation.Sound, vibration, acceleration, posture, the position etc. of vehicle are acquired by built-in sensors
Signal is accurately measured slow varying signal, for fast changed signal using time domain point by the way of pretreatment filtering plus MN detection
The feature of signal is extracted in analysis, frequency-domain analysis, wavelet transformation mode, carries out classification using neural network and state judges.By vehicle
Operating state signal, vibration, voice signal handle with Theory of Information Fusion as input vector and judge vehicle-state, guarantee
The accuracy and high efficiency of information processing.
The only above person, only specific embodiments of the present invention, when cannot be limited the scope of implementation of the present invention with this, therefore
The displacement of its equivalent assemblies, or according to equivalent changes and modifications made by the invention patent protection scope, should still belong to power of the present invention
The scope that sharp claim is covered.
Claims (10)
1. a kind of non-contact vehicle state aware equipment, characterized in that be equipped with signal acquisition module, core processor module,
Wireless communication module and power module, the wireless communication module, signal acquisition module, input module, display module and power supply
Module is connect with the core processor module respectively, and the power module is connect with vehicle power supply module；The signal acquisition
Module is equipped with vibration signals collecting module, sound signal collecting module and integrated navigation module；
The core processor module, the data for uploading the signal acquisition module carry out information storage, analysis, fusion
And diagnosis, and be packaged and cloud is transferred to by the wireless communication module；Vehicle-state is alerted simultaneously, reminds driver
There are failures for vehicle；
The power module for power supply needed for input power is converted to each module, and then supplies whole equipment.
2. non-contact vehicle state aware equipment according to claim 1, which is characterized in that the integrated navigation module
Equipped with Beidou, gyroscope and acceleration transducer.
3. non-contact vehicle state aware equipment according to claim 1 or 2, which is characterized in that the signal acquisition
Module is additionally provided with temperature-humidity signal acquisition module.
4. non-contact vehicle state aware equipment according to claim 3, which is characterized in that it is additionally provided with input module,
The input module is for carrying out user's login, equipment record and log query.
5. non-contact vehicle state aware equipment according to claim 4, which is characterized in that it is additionally provided with display module,
The display module is for showing equipment real-time status and checking maintenance log, record.
6. a kind of non-contact vehicle state aware method, characterized in that include the following steps:
Step 1, vibration signal, voice signal, temperature-humidity signal and the operating state signal of vehicle are acquired；The operating status letter
Number include position, acceleration and posture information；
Step 2, the signal of acquisition is classified: slow varying signal, fast changed signal, and signal processing is carried out, extract effective information；
Vibration signal, temperature-humidity signal and operating state signal are the slow varying signal, and voice signal is the fast changed signal；
Step 3, will melt through step 2 treated vibration, voice signal and operating state signal as input vector with information
Conjunction judges vehicle-state；Using temperature-humidity signal, longitude and latitude signal as input vector, judge that vehicle works as ground vapour with information fusion
Wait feature；The information fusion includes pixel-based fusion, feature-based fusion and decision level fusion.
7. non-contact vehicle state aware method according to claim 6, which is characterized in that the slow change is believed
Number, it takes pretreatment to filter, filters out part interference signal, then significant figure is determined using the MN detection method in radar signal monitoring
According to.
8. non-contact vehicle state aware method according to claim 7, which is characterized in that for the fast changed signal
With the vibration signal in the slow varying signal, the feature of signal is extracted using time-domain analysis, frequency-domain analysis and wavelet analysis, is established
Feature database carries out classification using neural network and state judges.
9. non-contact vehicle state aware method according to claim 8, which is characterized in that described in the step 3
Vehicle-state includes travel condition of vehicle, and the judgement of the travel condition of vehicle is specifically: by vibration signal, position and appearance
State signal uses pixel-based fusion, uses feature-based fusion to voice signal, acceleration signal.
10. non-contact vehicle state aware method according to claim 8 or claim 9, which is characterized in that in the step 3,
The vehicle-state further includes whether vehicle is in the state of bombarding, and the judgement whether vehicle is in the state of bombarding is specifically:
By using feature-based fusion to voice signal, vibration signal, then using the Bayesian Estimation of decision level fusion and fuzzy reason
By.
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| WO2022007330A1 (en) * | 2020-07-08 | 2022-01-13 | 深圳技术大学 | Battery electric vehicle state monitoring method and system |
| CN114608837A (en) * | 2022-03-03 | 2022-06-10 | 深圳市赛格导航科技股份有限公司 | Device and method for detecting vehicle starting |
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