A kind of vehicle discharge capacity detection device and methodTechnical field
The invention belongs to field of vehicle detection, especially relate to a kind of vehicle discharge capacity detection device and method.
Background technology
In-use automotive discharge detection method mainly has emission test method based on concentration and emission test method based on quality.BaseIn the method for testing of pollutant mass discharge, such as Light-Duty Gasoline Vehicle simple transient behavior pollutant emission detection method (is called for shortVMAS), by the actual operating mode of simulating vehicle more accurately, directly obtain total discharge quality of Automobile emission, fromAnd can more objectively judge the emission status of vehicle.By obtaining the discharge quality of vehicle, it is possible to obtain in unit travelsThe discharge quality of vehicle under journey, thus extrapolate vehicle discharge gross mass in given travel mileage.These data are for monitoringThe emission status of vehicle is particularly significant.In order to be accurately obtained above-mentioned information, need VMT Vehicle-Miles of Travel data accurately.
In actually detected, need the current driving mileage information of the detected vehicle of input.Current method is, detection personManual read picks up the car a mileometer information, is input in inspection software.Now there is following two problem:
(1) car owner's illegal modifications of detected vehicle mileage information of vehicle so that detection person reads the letter of mistakeBreath.
(2) detection person does not inputs mileage information according to mileometer data.
The two problem all makes follow-up testing result mistake.Additionally, by the speed of detection person's manual entry mileageDegree is relatively slow, reduces detection efficiency.
In view of this, the special proposition present invention.
Summary of the invention
The present invention provides a kind of efficiency height, VMT Vehicle-Miles of Travel data vehicle discharge capacity accurately detection device and method.
For solving above-mentioned technical problem, the present invention uses the basic conception of technical scheme to be: a kind of vehicle discharge capacity detectionSystem, described system includes tested vehicle, positions at the device of tested vehicle location, vehicle mileage data harvester, informationReason center and vehicle discharge capacity detection equipment；
Described vehicle mileage data harvester is connected with tested vehicle；
The device of the tested vehicle location in described location is connected with described tested vehicle communication；
The device of the tested vehicle location in described location communicates to connect with described vehicle mileage data harvester；
Described vehicle mileage data harvester and the wireless connections of described information processing centre；
Described information processing centre is connected with described vehicle discharge capacity detection equipment.
Further, described vehicle mileage data harvester is connected with the cigar lighter socket of tested vehicle.
Further, the device of the tested vehicle location in described location is HA Global Positioning Satellite.
Further, described vehicle mileage data harvester includes acceleration transducer, and described acceleration transducer is usedIn correcting the error during position location satellite is measured.
Further, described vehicle mileage data harvester is connected with the OBD interface of tested vehicle.
Further, the device of the tested vehicle location in described location is vehicle-mounted odometer sensor.
Further, described information processing centre includes local storage.
Further, described local storage is onboard FLASH memory.
Further, described vehicle mileage data harvester is additionally provided with power-down protection apparatus.
A kind of method detecting vehicle discharge capacity, comprises the steps:
(1) use position location satellite or vehicle-mounted odometer sensor that tested vehicle is travelled distance and be tracked location；
(2) with vehicle mileage data harvester, the mileage of tested vehicle to run is acquired；
(3) send the mileage collected to information processing centre to store；
(4) inquire mileage from information processing centre, mileage is downloaded to vehicle discharge capacity detection equipment；
(5) tested vehicle is detected.
After using technique scheme, it is fixed that the present invention compared with prior art has the advantages that the present invention usesThe position device of tested vehicle location and vehicle mileage data harvester be by the mileage accuracy of tested vehicle, it is to avoid quiltCar owner's illegal modifications mileage information of vehicle of detection vehicle, and detection person do not inputs mileage information according to mileometer dataEtc. hidden danger, it is ensured that mileage accurate, further ensure that the accuracy that vehicle condition is assessed；Avoid artificial hands simultaneouslyWork input mileage, saves the time, improves work efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1；
Fig. 2 is the structural representation of embodiment 2；
Fig. 3 is the structural representation of embodiment 3.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the present invention is further explained explanation.
Embodiment 1:
A kind of vehicle discharge capacity detecting system, as it is shown in figure 1, described system includes tested vehicle 1, positions tested vehicle positionDevice 3, vehicle mileage data harvester 4, information processing centre 5 and the vehicle discharge capacity detection equipment 2 put.
Equipped with OBD on described tested vehicle 1, the device 3 of the tested vehicle location in described location is vehicle-mounted odometer sensor, instituteStating vehicle mileage data harvester 4 to be connected with the OBD interface of tested vehicle 1, vehicle-mounted odometer sensor follows the tracks of the quilt obtainedThe mileage of inspection vehicle 1 is transferred to vehicle mileage data harvester 4 by OBD interface, if vehicle launch, vehicle mileageData acquisition unit 4 just automatically begins to obtain mileage and preserve data, and vehicle mileage data harvester 4 is by specificCordless communication network connects with the information processing centre 5 in Internet network, and information is saved in information processing simultaneouslyIn the heart 5 local storage, this cordless communication network can be GPRS/3G/4G, and this external memory is onboard FLASH, it is impossible to connectTo information processing centre 5 or when cannot write local storage, provide fault cues by trouble light.
Vehicle-mounted odometer sensor itself is carried, it is not necessary to rely on signal to tested vehicle 1 on the tested vehicle of the present embodiment 1Driving information carries out record, and the error in data that record obtains is less, can be uploaded directly into information processing centre 5.
Embodiment 2:
A kind of vehicle discharge capacity detecting system, as in figure 2 it is shown, described system includes tested vehicle 1, positions tested vehicle positionDevice 3, vehicle mileage data harvester 4, information processing centre 5 and the vehicle discharge capacity detection equipment 2 put.
OBD is not filled, so vehicle mileage data harvester 4 can only be with the point of tested vehicle 1 on described tested vehicle 1Cigarette device interface connects, as long as vehicle launch, vehicle mileage data harvester 4 just automatically begins to obtain mileage and preserve numberAccording to.
The device 3 of the tested vehicle location in described location communicates to connect with described tested vehicle 1, positions tested car in the present inventionThe device 3 of position is HA Global Positioning Satellite, utilizes general HA Global Positioning Satellite data to obtain the position letter of tested vehicle 1Breath, calculates mileage accordingly, typically has GPS, the Big Dipper in HA Global Positioning Satellite；Described HA Global Positioning Satellite and described carMileage harvester 4 wireless connections, the vehicle traveling information traced into is passed to vehicle mileage by HA Global Positioning SatelliteAccording to harvester 4；Vehicle mileage data harvester 4 by specific cordless communication network with the information in Internet networkProcessing center 5 connects, and information is saved in information processing centre 5 local storage simultaneously, and this cordless communication network is permissibleFor GPRS/3G/4G, this external memory is onboard FLASH, it is impossible to is connected to information processing centre 5 or cannot write this locality and depositDuring reservoir, provide fault cues by trouble light.
But HA Global Positioning Satellite is relatively big by effect of signals, the place remote in geographical position or do not have the ground of signalSide, the such as place such as tunnel, cavern, it is impossible to the mileage of actual travel is uploaded, then or, even not by the shadow of signalRinging, the one-stroke of GPS own there is also the error of more than ten meter, and long-term accumulation continues, and repeatedly stroke gets off, the traveling of tested vehicle 1Mileage is the most inaccurate, and the assessment to vehicle condition brings greater impact, therefore, in order to ensure tested vehicle 1 as far as possibleDriving mileage data is accurate, also adds acceleration transducer 6, accordingly even when be GPS in vehicle mileage data harvester 4Unwritten data, acceleration transducer 6 can also will have acceleration transducer 6 and GPS record by Kalman filteringA mileage accurately is obtained after Data Synthesis.
When needing the vehicle condition detecting tested vehicle 1, from information processing centre 5, inquire the mileage number of tested vehicle 1According to, this mileage is automatically downloaded to vehicle discharge capacity detection equipment 2, vehicle condition is carried out by vehicle discharge capacity detection equipment 2 againCheck.
This system avoids the car owner of tested vehicle 1 and revises mileage without authorization, causes detection person to misread, and causes vehicle condition to be commentedEstimate result mistake, it is ensured that the vehicle condition assessment information obtained is accurately；In going manually to read and input also without detection personNumber of passes evidence, improves efficiency, saves the time.
Embodiment 3:
The present embodiment is substantially the same manner as Example 2, as it is shown on figure 3, the most described vehicle mileage data harvester 4In be additionally provided with power-down protection apparatus 7, in order to prevent in vehicle travel process, artificial close vehicle mileage data harvester 4,Make VMT Vehicle-Miles of Travel misregister, in described vehicle mileage data harvester 4, be additionally provided with power-down protection apparatus 7.
Certainly, the device 3 positioning tested vehicle location herein can also be the vehicle-mounted odometer sensor in embodiment 1.
In order to ensure the reasonability of data, need to operate according to certain flow process:
(1) if being fitted without vehicle mileage data harvester 4 on vehicle, then detection is stopped.
(2) if vehicle mileage data harvester 4 exists fault, then detection is stopped.
(3) computer of vehicle discharge capacity detection equipment 2 connects with information processing centre 5, according to the vehicle of detection person's inputKey message, inquires about the mileage information of associated vehicle in the data base of server, and the detection being automatically downloaded to detect field setsIn standby computer.Need not detection person's manual entry mileage information, improve detection efficiency, prevent the mileage of input error.
(4) if network data base does not has the mileage information of tested vehicle 1, then detection is stopped.
(5) if the mileage downloaded needs to demarcate, perform to demarcate flow process.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the artFor Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also shouldIt is considered as protection scope of the present invention.