CN103822641A

CN103822641A - Vehicle mileage counting method

Info

Publication number: CN103822641A
Application number: CN201210467630.0A
Authority: CN
Inventors: 刘燚华; 陈茹涛; 杨峰; 林志强
Original assignee: Xiamen Yaxon Networks Co Ltd
Current assignee: Xiamen Yaxun Zhilian Technology Co ltd
Priority date: 2012-11-19
Filing date: 2012-11-19
Publication date: 2014-05-28
Anticipated expiration: 2032-11-19
Also published as: CN103822641B

Abstract

The invention provides a vehicle mileage counting method. The method comprises the following steps: analyzing and judging the actual state of a vehicle according to speed information obtained by the positioning of a GPS (global positioning system), wherein the state of the vehicle comprises a running state and an idle state, and short processes of ACC (adaptive cruise control) ignition, starting and stopping belong to the idle state; filtering vehicle speed pulses acquired in the idle state, only accumulating vehicle speed pulses acquired in the running state to obtain effective total mileage pulses, and performing conversion on the effective total mileage pulses to obtain the mileage of the vehicle. According to the method, a GPS positioning technology is combined with a vehicle speed sensor pulse acquisition mode, so that the complexity in interference pulse filtering in a process of counting the mileage only by utilizing vehicle speed sensor pulses is lowered, a complex method for counting the mileage only by utilizing the GPS positioning technology is also avoided, and meanwhile, the mileage counting accuracy is improved.

Description

A kind of vehicle mileage statistical method

Technical field

The present invention relates to a kind of method of vehicle mileage statistics.

Background technology

Vehicle maintenance and newness degree are often using distance travelled as judgement, more and more important to the statistics of Vehicle-Miles of Travel.Traditional mileage statistical method is directly to gather vehicle speed sensor pulse on car, add up cumulative, be converted into mileage value by corresponding vehicle characteristics coefficient again, calculate mileage than the variation of calculating traveling-position by GPS location technology, this method more can reflect actual distance travelled number really, and error is also less.

But vehicle is lighted a fire at ACC, starting is travelled, stop travelling etc. in of short duration process, due to the transition work of electrical system in car, in the output pulse of vehicle speed sensor, tend to be mingled with many burrs, and some burrs have larger time width and voltage amplitude, in the pulse detection collecting unit of mileage statistic device, just can seal in the disturbing pulse of these somes, if it is bad that the circuit filtering of pulse collection filter element is processed, the processing unit of rear end also can be added up these disturbing pulses as effective vehicle speed pulse, thereby the result on mileage pulse statistics causes larger impact, produce larger deviation.

Summary of the invention

The technical problem to be solved in the present invention, is to provide a kind of vehicle mileage statistical method, and the vehicle speed pulse collecting in vehicle stationary state is carried out to filtering processing, is not added in whole mileage pulse, thereby makes vehicle mileage pulse statistics more accurate.

The present invention is achieved in that a kind of vehicle mileage statistical method, locate the velocity information obtaining by GPS, judged the state of vehicle reality by this velocity information analysis, be divided into transport condition and stationary state, ACC lights a fire, starting is travelled and these of short duration processes that stop travelling are all classified as stationary state, and the vehicle speed pulse collecting in stationary state is carried out to filtering processing, and the vehicle speed pulse of the transport condition that only adds up, obtain effective total kilometrage pulse, finally convert and obtain the mileage of vehicle by this effective total kilometrage pulse.

Further, describedly judge that by this velocity information analysis the state concrete steps of vehicle reality are: per secondly get 1 velocity amplitude from GPS locating module, if the speed of forward and backward time point T per second and T+1 is VT and VT+1, judge whether VT and VT+1 are all greater than the threshold speed of setting, if, judge that vehicle is in transport condition, if not, judge that vehicle remains static.

Further, described threshold speed is 1m/s.

Tool of the present invention has the following advantages: the inventive method is by the two combination of mode of GPS location technology and the pulse of collection vehicle speed sensor, both reduced and carried out the complexity to disturbing pulse filtering processing in mileage statistic processes with vehicle speed sensor pulse merely, also the complicated mileage statistical method of having avoided simple dependence GPS location technology to carry out, the accuracy that has simultaneously improved mileage statistics.

Accompanying drawing explanation

The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.

Fig. 1 is the system principle diagram that realizes the inventive method.

Fig. 2 is the main process flow diagram of the inventive method.

Embodiment

Vehicle mileage statistical method of the present invention, by gathering on the basis of vehicle speed sensor pulse on car, adds GPS locating module original.As shown in Figure 1, the implement device of the inventive method mainly comprises pulse detection collecting unit, GPS locating module, data processing storage unit.

Described pulse detection collecting unit: for the pulse of vehicle speed sensor output is gathered, be converted to the input pulse of the voltage amplitude of data processing storage unit permission;

Described GPS locating module: for receiving gps signal and processing, export corresponding gps data.Itself and data processing storage unit communicate by UART mouth;

Described data processing storage unit: for gps data and input pulse being carried out to analyzing and processing, statistical computation distance travelled.

As shown in Figure 2, based on said apparatus, the inventive method is located the velocity information obtaining by GPS, judged the state of vehicle reality by this velocity information analysis, be divided into transport condition and stationary state, ACC lights a fire, starting is travelled and these of short duration processes that stop travelling are all classified as stationary state, and the vehicle speed pulse collecting in stationary state is carried out to filtering processing, and the vehicle speed pulse of the transport condition that only adds up, obtain effective total kilometrage pulse, finally convert and obtain the mileage of vehicle by this effective total kilometrage pulse.

Describedly judge that by this velocity information analysis the state concrete steps of vehicle reality are: per secondly get 1 velocity amplitude from GPS locating module, if the speed of forward and backward time point T per second and T+1 is VT and VT+1, judge whether VT and VT+1 are all greater than the threshold speed of setting, if, judge that vehicle is in transport condition, the vehicle speed pulse collecting is added in total kilometrage pulse, if not, judge that vehicle remains static, the vehicle speed pulse collecting is carried out to filtering processing, then carry out the processing of next 1 second.Wherein, preferably, described threshold speed can be set to 1m/s.

In sum, the inventive method is by the two combination of mode of GPS location technology and the pulse of collection vehicle speed sensor, both reduced and carried out the complexity to disturbing pulse filtering processing in mileage statistic processes with vehicle speed sensor pulse merely, also the complicated mileage statistical method of having avoided simple dependence GPS location technology to carry out, the accuracy that has simultaneously improved mileage statistics.

Although more than described the specific embodiment of the present invention; but being familiar with those skilled in the art is to be understood that; our described specific embodiment is illustrative; rather than for the restriction to scope of the present invention; those of ordinary skill in the art are in equivalent modification and the variation done according to spirit of the present invention, all should be encompassed in the scope that claim of the present invention protects.

Claims

1. a vehicle mileage statistical method, it is characterized in that: locate the velocity information obtaining by GPS, judged the state of vehicle reality by this velocity information analysis, be divided into transport condition and stationary state, ACC lights a fire, starting is travelled and these of short duration processes that stop travelling are all classified as stationary state, and the vehicle speed pulse collecting in stationary state is carried out to filtering processing, and the vehicle speed pulse of the transport condition that only adds up, obtain effective total kilometrage pulse, finally convert and obtain the mileage of vehicle by this effective total kilometrage pulse.

2. a kind of vehicle mileage statistical method according to claim 1, it is characterized in that: describedly judge that by this velocity information analysis the state concrete steps of vehicle reality are: per secondly get 1 velocity amplitude from GPS locating module, if the speed of forward and backward time point T per second and T+1 is VT and VT+1, judge whether VT and VT+1 are all greater than the threshold speed of setting, if, judge that vehicle is in transport condition, if not, judge that vehicle remains static.

3. a kind of vehicle mileage statistical method according to claim 2, is characterized in that: described threshold speed is 1m/s.