CN107941237A - A kind of vehicle mileage computational methods - Google Patents
A kind of vehicle mileage computational methods Download PDFInfo
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- CN107941237A CN107941237A CN201711341439.0A CN201711341439A CN107941237A CN 107941237 A CN107941237 A CN 107941237A CN 201711341439 A CN201711341439 A CN 201711341439A CN 107941237 A CN107941237 A CN 107941237A
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- change rate
- mileage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C22/00—Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
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- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a kind of vehicle mileage computational methods.The vehicle mileage computational methods of the present invention, after vehicle launch, torque sensor that system is additionally provided with the tyre pressure sensor being arranged in tire and is arranged on steering wheel drive link, and the tire pressure signal of collection and steering wheel rotary angle signal are delivered to controller.Method for Calculate Mileage：After vehicle launch, mileage calculation device starts to calculate mileage, and tyre pressure sensor starts that tire pressure signal will be gathered；Vehicle travels, and the VMT Vehicle-Miles of Travel signal of collection is delivered to controller by mileage calculation device, while the tire pressure signal of collection is also delivered to controller by tyre pressure sensor.A kind of vehicle mileage computational methods based on vehicle mileage computing system provided by the invention, can quickly calculate car VMT Vehicle-Miles of Travel.
Description
Technical field
The present invention relates to vehicle mileage computing technique field, more particularly to a kind of vehicle mileage computational methods.
Background technology
Traditional mileage instrument mileage, in counting pulse calculating mileage or being calculated according to speed and time
Journey, but all there are larger counting error for both approaches；Because count time to rotate a circle that umber of pulse is automotive hub
Number, but if when bend is more in some pressure of tire deficiency or conduct way, vehicle pulse number is multiplied by wheel hub girth and obtains more
The mileage gone out can not react the mileage number of the traveling of vehicle reality well；And the mileage calculated according to speed and time
It is accumulative because the error of speed and time in itself larger to also result in mileage deviation larger.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of vehicle mileage computational methods, improve the calculating of vehicle mileage
Efficiency.
To achieve the above object, the present invention provides following technical solution：
A kind of vehicle mileage computational methods, include the following steps：
(21) vehicle launch, mileage calculation device start to calculate mileage, and tyre pressure sensor starts to gather tire pressure signal；
(22) in vehicle traveling, the VMT Vehicle-Miles of Travel signal of collection is delivered to controller by mileage calculation device, at the same time
The tire pressure signal of collection is also delivered to controller by tyre pressure sensor；
(23) whether the signal data gathered according to tyre pressure sensor, controller check tire pressure in threshold interval：
If tire pressure is in threshold interval, by the driving of the mileage calculation device received in two-way mileage amount signal
Mileage amount signal is delivered to mileage instrument through bus and shows,
As the further optimization of such scheme, include the following steps：Velocity pick-up on velocity sensor tire
Device, for gathering the velocity information of corresponding tire；The calculation formula of the VMT Vehicle-Miles of Travel signal is S=Vt, wherein, V
For in the velocity sensor on four tires, the average value for the velocity information that at least two velocity sensors are collected.
As the further optimization of such scheme, the calculating process of the average value V of the velocity information of tire is：
Judge in current period, the rotating speed of four tires is compared to the change rate of the rotating speed difference of upper a cycle, difference
For the first change rate, the second change rate, the 3rd change rate, the 4th change rate；First change rate, the second change rate, the 3rd are become
Rate, the 4th change rate are ranked up from high to low；
(a), judge whether the first change rate, the second change rate, the 3rd change rate, the 4th change rate are more than default become respectively
Rate threshold value, if it is not, then the average value V of velocity information is being averaged for the velocity amplitude acquired in 4 velocity sensors
Value；
If it is, it is pre- to judge that first change rate, the second change rate, the 3rd change rate, the 4th change rate are more than
If whether the number of change rate threshold value is not more than 2；
If (b), it is not more than two, by less than the velocity sensor institute corresponding to the change rate of default change rate threshold value
Average value V of the average value of the velocity amplitude of acquisition as velocity information in the cycle；
(c), if greater than two and less than four, then only one change rate is less than corresponding to default change rate threshold value
Velocity sensor acquired in average value V of the velocity amplitude as velocity information in the cycle；
If (d), first change rate, the second change rate, the 3rd change rate, the 4th change rate are all higher than default change
Rate threshold value, then believe within the cycle using the average value of the velocity information on described in a cycle as the speed of current period
The average value V of breath.
As the further optimization of such scheme, the cycle is 0.5-1s.
A kind of vehicle mileage computing system and vehicle mileage computational methods obtained based on change rate provided by the invention, tool
Have the advantages that：
(1), a kind of vehicle mileage computational methods provided by the invention, built-in vehicle mileage computational methods, pass through tire pressure
Sensor starts that tire pressure signal will be gathered；And the VMT Vehicle-Miles of Travel signal of collection is delivered to by control by mileage calculation device
Device, while the tire pressure signal of collection is also delivered to controller by tyre pressure sensor；By controller according to tyre pressure sensor inspection
Whether tire pressure normal, if tire pressure normally if by the mileage of the mileage calculation device received in two-way mileage amount signal
Amount signal is delivered to mileage instrument through bus and shows.A kind of vehicle mileage based on vehicle mileage computing system provided by the invention
Computational methods, can quickly calculate car VMT Vehicle-Miles of Travel.
Brief description of the drawings
Fig. 1 is the flow diagram of the vehicle mileage computational methods of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of invention of greater clarity, below by attached drawing and embodiment, to this
Inventive technique scheme is further elaborated.However, it should be understood that specific embodiment described herein is only solving
Technical solution of the present invention is released, is not intended to limit the invention the scope of technical solution.
A kind of vehicle mileage computing system includes mileage calculation device, controller and the speed biography being arranged on four tires
Sensor；Through bus output, wherein mileage amount signal to mileage instrument is shown the controller all the way；Further include and be arranged on
Tyre pressure sensor in tire and the torque sensor being arranged on steering wheel drive link, the tyre pressure sensor is by the tire of collection
Pressure signal is delivered to controller；The steering wheel rotary angle signal of collection is delivered to controller by the torque sensor.
Based on a kind of above-mentioned vehicle mileage computational methods of vehicle mileage computing system, include the following steps：
(21) vehicle launch, mileage calculation device start to calculate mileage, and tyre pressure sensor starts to gather tire pressure signal；
(22) in vehicle traveling, the VMT Vehicle-Miles of Travel signal of collection is delivered to controller by mileage calculation device, at the same time
The tire pressure signal of collection is also delivered to controller by tyre pressure sensor；
(23) whether the signal data gathered according to tyre pressure sensor, controller check tire pressure in threshold interval：
If tire pressure is in threshold interval, by the driving of the mileage calculation device received in two-way mileage amount signal
Mileage amount signal is delivered to mileage instrument through bus and shows,
Velocity sensor on velocity sensor tire, for gathering the velocity information of corresponding tire；The car
The calculation formula of travel distance signal is S=Vt, wherein, V is at least two speed in the velocity sensor on four tires
The average value for the velocity information that sensor is collected.
Wherein, the calculating process of the average value V of the velocity information of tire is：
Judge in current period, the rotating speed of four tires is compared to the change rate of the rotating speed difference of upper a cycle, difference
For the first change rate, the second change rate, the 3rd change rate, the 4th change rate；First change rate, the second change rate, the 3rd are become
Rate, the 4th change rate are ranked up from high to low；
(a), judge whether the first change rate, the second change rate, the 3rd change rate, the 4th change rate are more than default become respectively
Rate threshold value, if it is not, then the average value V of velocity information is being averaged for the velocity amplitude acquired in 4 velocity sensors
Value；
If it is, it is pre- to judge that first change rate, the second change rate, the 3rd change rate, the 4th change rate are more than
If whether the number of change rate threshold value is not more than 2；
If (b), it is not more than two, by less than the velocity sensor institute corresponding to the change rate of default change rate threshold value
Average value V of the average value of the velocity amplitude of acquisition as velocity information in the cycle；
(c), if greater than two and less than four, then only one change rate is less than corresponding to default change rate threshold value
Velocity sensor acquired in average value V of the velocity amplitude as velocity information in the cycle；
If (d), first change rate, the second change rate, the 3rd change rate, the 4th change rate are all higher than default change
Rate threshold value, then believe within the cycle using the average value of the velocity information on described in a cycle as the speed of current period
The average value V of breath.
One kind provided by the invention is based on vehicle mileage computational methods, starts to believe collection tire pressure by tyre pressure sensor
Number；And the VMT Vehicle-Miles of Travel signal of collection is delivered to by controller by mileage calculation device, while tyre pressure sensor also will
The tire pressure signal of collection is delivered to controller；Check whether tire pressure is normal according to tyre pressure sensor by controller, if tire pressure is just
In the mileage amount signal of the mileage calculation device received in two-way mileage amount signal is delivered to by Chang Ze through bus
Gift of money for a friend going on a journey table is shown, can quickly calculate car VMT Vehicle-Miles of Travel
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical solution, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (4)
- A kind of 1. vehicle mileage computational methods, it is characterised in that：Include the following steps：(21) vehicle launch, mileage calculation device start to calculate mileage, and tyre pressure sensor starts to gather tire pressure signal；(22) in vehicle traveling, the VMT Vehicle-Miles of Travel signal of collection is delivered to controller, while tire pressure by mileage calculation device The tire pressure signal of collection is also delivered to controller by sensor；(23) whether the signal data gathered according to tyre pressure sensor, controller check tire pressure in threshold interval：If tire pressure is in threshold interval, by the mileage of the mileage calculation device received in two-way mileage amount signal Amount signal is delivered to mileage instrument through bus and shows.
- A kind of 2. vehicle mileage computational methods according to claim 1, it is characterised in that：Include the following steps：Arranged on speed The velocity sensor on sensor tire is spent, for gathering the velocity information of corresponding tire；The VMT Vehicle-Miles of Travel signal Calculation formula be S=Vt, wherein, V is that at least two velocity sensors are collected in the velocity sensor on four tires Velocity information average value.
- A kind of 3. vehicle mileage computational methods according to claim 2, it is characterised in that：The average value of the velocity information of tire The calculating process of V is：Judge in current period, the rotating speeds of four tires is respectively the compared to the change rate of the rotating speed difference of upper a cycle One change rate, the second change rate, the 3rd change rate, the 4th change rate；By the first change rate, the second change rate, the 3rd change rate, 4th change rate is ranked up from high to low；(a), judge whether the first change rate, the second change rate, the 3rd change rate, the 4th change rate are more than default change rate respectively Threshold value, if it is not, then the average value V of velocity information is the average value of the velocity amplitude acquired in 4 velocity sensors；If it is, judge that first change rate, the second change rate, the 3rd change rate, the 4th change rate are more than default become Whether the number of rate threshold value is not more than 2；If (b), it is not more than two, by less than acquired in the velocity sensor corresponding to the change rate of default change rate threshold value Velocity amplitude average value V of the average value as velocity information in the cycle；(c), if greater than two and less than four, then only one change rate is less than to the speed corresponding to default change rate threshold value Spend average value V of the velocity amplitude acquired in sensor as velocity information in the cycle；If (d), first change rate, the second change rate, the 3rd change rate, the 4th change rate are all higher than default change rate Threshold value, then be used as the velocity information of current period within the cycle using the average value of the velocity information on described in a cycle Average value V.
- A kind of 4. vehicle mileage computational methods according to claim 3, it is characterised in that：The cycle is 0.5-1s.
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| CN201711341439.0A CN107941237A (en) | 2017-12-14 | 2017-12-14 | A kind of vehicle mileage computational methods |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238300A (en) * | 2018-09-07 | 2019-01-18 | 青岛迈金智能科技有限公司 | A kind of meter circle method and apparatus |
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| JP2928560B2 (en) * | 1989-10-17 | 1999-08-03 | パイオニア株式会社 | Travel distance calculation device for vehicles |
| EP2000776A2 (en) * | 2007-06-08 | 2008-12-10 | Bridgestone Corporation | Tire revolution detecting system |
| CN103047996A (en) * | 2012-12-20 | 2013-04-17 | 埃泰克汽车电子(芜湖)有限公司 | Vehicle mileage calculation system and method |
| CN104535076A (en) * | 2014-11-18 | 2015-04-22 | 青岛雷尔威机械制造有限公司 | Antiskid device mileage accumulation method |
| CN104999865A (en) * | 2015-07-13 | 2015-10-28 | 杭州联云汽车科技有限公司 | Indirect tire pressure monitoring method based on OBD interface |
| CN108106632A (en) * | 2017-12-14 | 2018-06-01 | 黄晓丽 | A kind of vehicle mileage computing system obtained based on change rate |
-
2017
- 2017-12-14 CN CN201711341439.0A patent/CN107941237A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2928560B2 (en) * | 1989-10-17 | 1999-08-03 | パイオニア株式会社 | Travel distance calculation device for vehicles |
| EP2000776A2 (en) * | 2007-06-08 | 2008-12-10 | Bridgestone Corporation | Tire revolution detecting system |
| CN103047996A (en) * | 2012-12-20 | 2013-04-17 | 埃泰克汽车电子(芜湖)有限公司 | Vehicle mileage calculation system and method |
| CN104535076A (en) * | 2014-11-18 | 2015-04-22 | 青岛雷尔威机械制造有限公司 | Antiskid device mileage accumulation method |
| CN104999865A (en) * | 2015-07-13 | 2015-10-28 | 杭州联云汽车科技有限公司 | Indirect tire pressure monitoring method based on OBD interface |
| CN108106632A (en) * | 2017-12-14 | 2018-06-01 | 黄晓丽 | A kind of vehicle mileage computing system obtained based on change rate |
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| CN109238300A (en) * | 2018-09-07 | 2019-01-18 | 青岛迈金智能科技有限公司 | A kind of meter circle method and apparatus |
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Application publication date: 20180420 |