CN105865565A - A method and a device for displaying the residual fuel quantity of an automobile - Google Patents
A method and a device for displaying the residual fuel quantity of an automobile Download PDFInfo
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- CN105865565A CN105865565A CN201510032172.1A CN201510032172A CN105865565A CN 105865565 A CN105865565 A CN 105865565A CN 201510032172 A CN201510032172 A CN 201510032172A CN 105865565 A CN105865565 A CN 105865565A
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Abstract
The invention provides a method for displaying the residual fuel quantity of an automobile. The method comprises the steps of powering on and igniting an automobile; obtaining the value of fuel in a fuel tank; retrieving a fuel value obtained and a fuel value displayed by a display instrument before last-time stop and power outage from a storage area and obtaining the absolute value of a first difference value of the two; judging whether the absolute value of the first difference value is less than a first preset value; if it is judged that the absolute value of the first difference value is less than the first preset value, obtaining the absolute value of the second difference value between the fuel value obtained this time and the fuel value obtained before last-time stop and power outage; judging whether the absolute value of the second difference value is less than or equal to a second preset value; if it is judged that the absolute value of the second difference value is less than or equal to the second preset value, regarding the fuel value obtained this time as the true fuel value; displaying the fuel value obtained this time. The invention also provides a device for displaying the residual fuel quantity of an automobile.
Description
Technical field
The present invention relates to a kind of display packing and device, particularly to the method and device of a kind of display automobile Fuel Remained.
Background technology
The instrumental panel of automobile has the function of display automobile Fuel Remained, conventional technology is to be located in fuel tank by a sensor, make the Fuel Remained amount gathered in automotive oil tank of sensor timing, then by display instrument, this Fuel Remained amount is shown in face of driver.This mode, the fuel oil situation in automobile can not be reflected really, such as running into either large or small road surface of jolting, fuel oil in fuel tank will necessarily be of flowing rhythm along with jolting of automobile, so, the fuel oil that now collects or real fuel oil can be substantially lower than, or can greatly be higher than real fuel oil；The most such as or steep or gentle slope pavement, in fuel tank, fuel oil will necessarily be in a gradient corresponding with described slope pavement or little rocking can be played, then the fuel oil now collected can not embody the actual value in fuel tank too.Therefore, existing means can not make real fuel oil that display instrument is shown in fuel tank or more real fuel oil.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the technical problem to be solved is: provide a kind of can the method and device of fuel oil in the fuel tank of truly or the most truly display automobile.
For solving above-mentioned technical problem, the technical scheme that the present invention uses is: a kind of method providing display automobile Fuel Remained, comprises the following steps:
Automobile powers on IGN；
Obtain the fuel value in fuel tank；
The fuel value that the fuel value that gets before recalling power-off of stopping last time in memory block and display instrument show, and take the absolute value of the first difference between them；
Judge that whether the absolute value of described first difference is less than one first preset value；
If judge the absolute value obtaining described first difference less than described first preset value, then the absolute value of the second difference of the fuel value got before taking the fuel value this time got and power-off of stopping described last time；
Judge that whether the absolute value of described second difference is less than or equal to one second preset value；
If judging, the fuel value that this gets less than or equal to the second preset value, is then considered as real fuel value by the absolute value obtaining described second difference；
The fuel value that display this time gets.
Wherein, whether it is less than in the step of the first preset value at the absolute value judging described first difference, also includes:
If judge the absolute value obtaining described first difference more than or equal to described first preset value, then the fuel value that this gets is considered as false fuel value；
Show, before showing power-off of stopping last time, the fuel value that instrument shows.
Wherein, whether it is less than or equal in the step of described second preset value at the absolute value judging described second difference, also includes:
If judging, the fuel value that this gets more than described second preset value, is then considered as the fuel value got after automobile fuel filler by the absolute value obtaining described second difference；
Fuel value after the oiling that display this time gets.
Further, the method for described display automobile Fuel Remained also includes:
Judge whether automobile is in drive mode；
If judging, obtaining described automobile is in drive mode, then obtain the fuel value of fuel tank；
The fuel value this got compares with the front fuel value once shown；
If the fuel value this time got is less than the front fuel value once shown, and when the absolute value of their the 3rd difference is less than three preset value, then the real fuel value fuel value now got being considered as under drive mode；
Show the fuel value that this time gets.
Wherein, in the step that the fuel value this got and the front fuel value once shown compare, also include:
If the absolute value of the 3rd difference of the fuel value this time got and the front fuel value once shown is more than or equal to described three preset value, then the fuel value that this gets is considered as false fuel value；
Do not show the fuel value this time got.
Wherein, judging whether automobile is in the step of drive mode, also including:
If judging, obtaining described automobile is in non-drive mode, then judge whether described automobile is in idling mode；
If judge that obtaining described automobile is in idling mode, then calculate a Fuel Remained value every a scheduled time；
The Fuel Remained value that display calculates each time.
Wherein, if when judging that obtaining described automobile is in idling mode, then calculate in the step of a Fuel Remained value every a scheduled time, including:
At the above-mentioned pulse signal gathering the expression oil consumption that Engine ECU per a period of time sends in a predetermined amount of time；
The pulse signal sent according to ECU per a period of time, analyzed within this period, in this pulse signal, and the number of individual pulse, the distributive value of each pulse；
Number according to the pulse analyzed, the distributive value of each pulse number obtain accumulative oil consumption, and wherein, the distributive value of unit pulse is multiplied by accumulative oil consumption equal to the total pulse number collected in the above-mentioned scheduled time；
Obtaining Fuel Remained value according to accumulative oil consumption, wherein, described Fuel Remained value deducts accumulative oil consumption equal to the front fuel value once shown.
Wherein, judging whether described automobile is in the step of idling mode, also including: obtaining described automobile is in non-idle mode, then judging whether automobile is in car-parking model if judging；
If judging, obtaining described automobile is in car-parking model, then the fuel value and the last fuel value gathered that are in the display of car-parking model the last time from automobile are stored.
For solving above-mentioned technical problem, another technical solution used in the present invention is: provide the device of a kind of display automobile Fuel Remained, including:
Automobile powers on module, is used for making automobile to power on IGN；
First acquisition module, for after described automobile powers on ING, obtains the fuel value in fuel tank；
The fuel value that first value module, the fuel value got before recall power-off of stopping last time in memory block and display instrument show, and take the absolute value of the first difference between them；
First judge module, for judging that whether the absolute value of described first difference is less than one first preset value；
Second value module, is used for when described first judge module judges the absolute value obtaining described first difference less than described first preset value, then the absolute value of the second difference of the fuel value got before taking the fuel value this time got and power-off of stopping described last time；
Second judge module, or for judging that whether the absolute value of described second difference is less than equal to one second preset value；
True fuel value determines module, for judging that the fuel value that this gets less than or equal to the second preset value, is then considered as real fuel value by the absolute value obtaining described second difference at described second judge module；
Display module, for showing the fuel value this time got.
Further, described true fuel value determines module, is additionally operable to when the absolute value that described first judge module judges to obtain described first difference is more than and is equal to described first preset value, then the fuel value that this gets is considered as false fuel value；
Described display module, is additionally operable to show stopped last time before power-off and shows the fuel value that instrument shows；
Described true fuel value determines module, is additionally operable to when described second judge module judges that the fuel value that this gets more than the second preset value, is then the fuel value got after automobile fuel filler by the absolute value obtaining described second difference；
Described display module, is additionally operable to show the fuel value after the oiling this time got.
The method and device of display automobile Fuel Remained of the present invention, compared with prior art, the present invention can make automobile stop, idling, travel and all can show truly under oiling pattern or more real fuel value, it provides the benefit that: facilitate truly or the more real fuel oil in the real-time fuel tank understanding its automobile driven of car owner, it is easy to car owner judge whether to need immediately to increase fuel oil, avoid in traditional display packing, owing to the fuel value of display is inaccurate, the saltus step causing oil meter to show causes car owner's false judgment to the fr in fuel tank, the method and device of this display automobile Fuel Remained makes shown fuel oil closer to the real fuel oil in fuel tank.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of the method first embodiment of display automobile Fuel Remained of the present invention.
Fig. 2 is the flow chart of method second embodiment of display automobile Fuel Remained of the present invention.
Fig. 3 be display automobile Fuel Remained of the present invention method the second embodiment in calculate Fuel Remained value flow chart.
Fig. 4 be display automobile Fuel Remained of the present invention method the second embodiment in the structural representation of pulse signal.
Fig. 5 is the block diagram of device one embodiment of display automobile Fuel Remained of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
First, before embodiment is described, it is necessary to some herein presented terms are explained.Such as:
If occurring herein using the term such as " first ", " second " to describe various element, but these elements should not limited by these terms.These terms are only used for distinguishing an element and another element.Therefore, " first " element can also be referred to as " second " element without departing from the teachings of the present invention.
In addition, it is to be understood that when mentioning that an element " connects " or during " coupled " to another element, it can be directly connected or be directly coupled to another element or can also there is intermediary element.On the contrary, when mentioning that an element " is directly connected " or " directly coupling " arrives another element, the most there is not intermediary element.
The various terms occurred in this article are used only for describing the purpose of specific embodiment and being not intended as limitation of the invention.Unless context clearly dictates otherwise, then singulative is intended to also include plural form.
When using term " to include " in this manual and/or time " including ", these terms specify the existence of described feature, entirety, step, operation, element and/or parts, but be also not excluded for more than one other feature, entirety, step, operation, element, parts and
/ or the existence of its group and/or additional.
About embodiment:
Refer to the flow chart that Fig. 1, Fig. 1 are the method first embodiments of display automobile Fuel Remained of the present invention.The method of the display automobile Fuel Remained of the present embodiment, comprises the following steps:
S101, automobile power on IGN；
S102, the fuel value obtained in fuel tank；
In this step, gather the value in fuel tank by the fuel sensor being located in the fuel tank of automobile, and obtain described fuel value after treatment.
S103, in memory block, recall power-off of stopping last time before the fuel value that shows of the fuel value that gets and display instrument, and take the absolute value of the first difference between them；
In the present embodiment, described memory block may refer to the memory of the fuel value that last display instrument show in the internal memory of automobile, and sensor acquisition to but the most also have not enough time to the fuel value of display or collected but the fuel value not being shown owing to being not belonging to real fuel value.
In this step, the fuel value L1 got before showing fuel value L2-power-off last time that instrument shows described in described first difference DELTA L=；Or show, described in the fuel value L1-got before described first difference DELTA L=power-off last time, the fuel value L2 that instrument shows.
S104, judge that the absolute value of described first difference is whether less than one first preset value；If judge the absolute value obtaining described first difference less than described first preset value, then enter S105 step；If judge the absolute value obtaining described first difference more than or equal to described first preset value, then proceed to S109 step；
Described first preset value refers to the P% of fuel oil total measurement (volume) L.In the present embodiment, using fuel tank total measurement (volume) L*8% as described first preset value.In this step, it is judged that whether described Δ L is less than described fuel tank total measurement (volume) L*8%；
S105, take the fuel value that this time gets and power-off of stopping described last time before the absolute value of the second difference of fuel value that gets；
In this step, the fuel value L3 that the fuel value L1-got before the fuel value L1 got before fuel value L3-power-off last time that described second difference DELTA L1=this time gets, or described second difference DELTA L1=power-off last time this time gets.
S106, judge that the absolute value of described second difference is whether less than or equal to one second preset value；If judge to obtain described second difference less than or equal to described second preset value, then enter S107 step；If judge to obtain described second difference more than described second preset value, then proceed to S111 step；
In the present embodiment, described second preset value and described first preset value can take same value.The most all take the 8% of described fuel tank total measurement (volume) L；
In this step, it is judged that whether described Δ L1 is less than or equal to fuel tank total measurement (volume) L*8%.
If S107 judges that the fuel value that this gets less than or equal to the second preset value, is then considered as real fuel value by the absolute value obtaining described second difference；
When the described i.e. automobile of real fuel value is positioned at level road or levels off on level road, the fuel value that fuel sensor collects.
The fuel value that S108, display this time get；
In this step, when showing the fuel value L2 that instrument shows and when the differing less of fuel value L1 collected before power-off last time before power-off last time, then it is assumed that the fuel value collected last time automobile be in horizontal plane or level off to horizontal plane time collected；In this case, the fuel value L1 collected before the fuel value L3 collected afterwards by this being powered on again and power-off last time compares, when differ less time, then it is assumed that the fuel value L3 that this collects after powering on also automobile be in horizontal plane or level off to horizontal plane time collected；So all meet above-mentioned under the conditions of, then it is assumed that the fuel value L3 that this collects after powering on is real fuel value, by display instrument show the real fuel value this time got.
S109, the fuel value this got are considered as false fuel value；
In this step, when before showing fuel value L2 that instrument shows and power-off last time before power-off last time, the absolute value of first difference of the fuel value L1 that fuel sensor collects is more than or equal to fuel tank total measurement (volume) * 8%, then being considered as when stopping last time, automobile is in slope pavement；So, the first time after powering on gathers and is also considered as being on slope pavement collection at automobile, and therefore, then the fuel value that the first time after this being powered on collects is considered as false fuel value.
S110, display were stopped and show the fuel value that instrument shows before power-off last time；
When the first time after powering on gathers as false fuel value, the most do not show the fuel value this time collected, show, before continuing display power-off last time, the fuel value that instrument shows.
S111, the fuel value this got are considered as the fuel value got after automobile fuel filler；
In this step, before the fuel value L2 shown by display instrument before last time stops power-off and power-off last time, the absolute value of first difference DELTA L of the fuel value L1 that fuel sensor is collected is less than the fuel tank total measurement (volume) L*8% of automobile, and after meeting under the conditions of this, when second difference DELTA L1 of the fuel value L1 collected before this fuel value L3 and power-off last time collected afterwards that power on is more than the fuel tank total measurement (volume) L*8% of automobile, then think when stopping power-off last time, automobile is positioned at level road or the level road that levels off to, and after power-up, the fuel oil of the fuel tank of automobile adds, the most then think and stopped last time after power-off, powering on after automobile fuel filler, so, this fuel value got then is considered the fuel value after refueling, it is considered as more real fuel value.
Fuel value after the oiling that S112, display this time get.
Embodiment of the present invention, by the fuel value L1 collected before last time parking power-off, show the fuel value L2 shown by instrument and power on afterwards when the secondary fuel value L3 collected calculates and judges, can judge to stop last time power-off time, automobile is to stop at level road or the level road that levels off to, or stop in steep road surface on slope, if when level road stops, when the secondary more real fuel value collected after then display powers on, if stop in steep road surface on slope, then show the fuel value shown by instrument after continuing to show power-off of stopping last time；The power-off that also can determine whether out to stop last time is real car-parking model, or temporarily flame-out stops to refuel, if in order to refuel a car and temporary transient oiling is stopped working, then the fuel oil after the oiling this got is shown by display instrument.By above-mentioned steps, automobile can show truly or fuel value in more real automotive oil tank, if convenient automobile enters the fuel oil in the different mode intermediate fuel oil case such as idling mode or drive mode after the power-up and carries out truly or the most really showing；The car owner that is so more convenient for judges accurately, facilitates the subsequent action of car owner.
Refer to the flow chart that Fig. 2, Fig. 2 are method second embodiments of display automobile Fuel Remained of the present invention.The method of the display automobile Fuel Remained of the present embodiment is in addition to including that the institute in first embodiment is in steps, further comprising the steps of:
S201, judge whether automobile is in drive mode；If judge that obtaining described automobile is in drive mode, then enter S201 step；If judging, obtaining described automobile is not in drive mode, then proceed to S208 step；
In this step, described drive mode refers to that automobile is in transport condition, and i.e. automobile power source is ING, speed is more than zero and rotating speed is more than zero.In the present embodiment, it is under this state determining automobile, i.e. starts to obtain oil tank fuel value.
S202, the fuel value of acquisition fuel tank；
S203, the fuel value this got compare with the front fuel value once shown；If comparing the fuel value this time got to be less than the front fuel value once shown, and when the absolute value of the 3rd difference between them is less than three preset value, then enter S204 step；If the absolute value comparing the 3rd difference of fuel value and the front fuel value once shown this time got is more than or equal to described three preset value, then proceed to S206 step；
In this step, described before the fuel value that once shows, refer at fuel sensor before this gathers oil tank fuel value, the last true fuel value shown by display instrument, and using this fuel value as a standard judged.Described true fuel value, is when automobile is exercised in plane or when leveling off to plane section, the fuel value that described fuel sensor collects；When automobile in the process of moving, be in when jolting road surface or be in slope pavement, the fuel oil in automotive oil tank is in a non-level state, then, the fuel oil that fuel sensor collects on above-mentioned road surface, then it is assumed that be false fuel value.
Described 3rd preset value can take same value with above-mentioned first preset value and the second preset value, i.e. the total measurement (volume) L*8% of automotive oil tank.It is to be appreciated that in various embodiments, according to different vehicles, urban pavement situation or other situations, the first preset value, the second preset value and the 3rd preset value can make different conversion.In this step, when the fuel value that this fuel value got shows less than display instrument, and when their difference is less than the 8% of fuel tank total measurement (volume) L, then think that the road surface of running car is normal road surface, i.e. level road or level off to the road surface of level, so, then it is assumed that this fuel value got is real fuel value.
S204, the truly or more real fuel value that the fuel value now got is considered as under drive mode；
S205, show the fuel value that this time gets.
If S206 compares the absolute value of the 3rd difference of fuel value and the front fuel value once shown this time got more than or equal to described three preset value, then the fuel value that this gets is considered as false fuel value；
In this step, when the fuel value that this fuel value got shows more than or equal to described display instrument, and when the absolute value of their the 3rd difference is more than or equal to the 8% of fuel tank total measurement (volume) L, then think that the road surface of running car is improper road surface, it is jolt road surface or tilted road surface, when running car is when jolting road surface or the bigger road surface of gradient, fuel oil in fuel tank is also for and then jolting or tilting, if and the fuel oil now got and the last fuel value shown compare, if the absolute value of the 3rd difference between them is more than or equal to the 8% of the total measurement (volume) L of this fuel tank, the fuel oil being then considered as in fuel tank is jolting or is being in heeling condition, and then the fuel value this got is considered as false fuel value.
S207, do not show the fuel value this time got；
S208, judge whether described automobile is in idling mode；If judge that obtaining described automobile is in idling mode, then enter S209 step；If judge that obtaining described automobile is not in idling mode, then proceed to S211 step；
In this step, described idling mode refer to automobile power source be IGN, speed be zero and a kind of state of being not zero of rotating speed.
S209, then every one the scheduled time calculate a Fuel Remained value；
Described every a scheduled time, can be configured when automobile dispatches from the factory, it is also possible to be configured according to preference by driver.Such as, could be arranged to calculate a Fuel Remained value every 60s every a scheduled time, specifically, refer to Fig. 3 in this example, this step includes following sub-step:
S2091, above-mentioned in a predetermined amount of time gather ECU per a period of time send represent oil consumption pulse signal；
In this step, described ECU per a period of time refers to that ECU sends the frequency of pulse signal, such as in this step, it is every 100ms by this frequency configuration, the every 100ms of the most described ECU sends the pulse signal once representing oil consumption, so within the time period of above-mentioned 60s, ECU then to send the pulse signal representing oil consumption 36 times.
S2092, the pulse signal sent according to ECU per a period of time, analyzed within this period, in this pulse signal, and the number of individual pulse, the distributive value of each pulse；
Refer to Fig. 4, such as: in the pulse signal that ECU sent within the time period of first time 100ms, the individual pulse cycle is 2ms, dutycycle is 50%, 4 umber of pulses, each pulse represents the distributive value of 36uL, then within the time period of first time 100ms, and the distributive value of first pulse signal is: 36*4=144uL；
In the pulse signal that ECU sent within the time period of second time 100ms, the individual pulse cycle is 2ms, 6 umber of pulses, then, within the time period of second time 100ms, the distributive value of second pulse signal is 36*6=216uL；
By that analogy, until within the time period of above-mentioned 60s, add up 36 ECU distributive value within the 100ms time period.
The number of pulse, the distributive value of each pulse number that S2093, basis analyze obtain accumulative oil consumption, and wherein, the distributive value of unit pulse is multiplied by accumulative oil consumption equal to the total pulse number collected in the above-mentioned scheduled time；
In this step, when within the above-mentioned 60s time period, after completing 36 ECU oil spout statistics of variables within the 100ms time period, and total accumulative oil consumption that 36 ECU added up are within the 100ms time period:
Distributive value in the 100ms of distributive value in the 100ms of described accumulative oil consumption (uL)=for the first time+for the second time+... the distributive value in+the 36 100ms=(pulse number of+the second 2s of pulse number of first 2s+... the pulse number of+n-th 2s) * 36uL.
The accumulative oil consumption of S2094, basis obtains Fuel Remained value, and wherein, described Fuel Remained value deducts accumulative oil consumption equal to the front fuel value once shown；
Fuel value-described accumulative oil consumption that described Fuel Remained value (L)=front display instrument table shows.
So, the Fuel Remained value in the fuel oil consumed in the time period of every 60s can be calculated and fuel tank.
S210, show the above-mentioned Fuel Remained value calculated each time；
S211, judge whether automobile is in car-parking model；If judge that obtaining described automobile is in car-parking model, then enter S212 step；If judge that obtaining described automobile is not in car-parking model, then proceed to S201 step；
Described car-parking model refers to that vehicle stationary, automobile power source are OFF or for ACC, automobile rotational speed is zero and speed is zero a kind of state.
S212, the fuel value and the last fuel value gathered that are in the display of car-parking model the last time from automobile are stored.
The described fuel value collected from car-parking model the last time, refer to that fuel sensor has collected this fuel value, but this fuel value has not enough time to the fuel value shown through display instrument, or refer to that described fuel sensor has collected fuel value, but the fuel value that this time collects is false fuel value.This fuel value collected is stored in memory, it it is the fuel value that automobile calls this access when powering on next time for convenience, after facilitating power on next time, the fuel value that instrument shows is shown before being in car-parking model with automobile, and after next time powers on, sensor contrasts when the secondary fuel value collected, to judge that the fuel value collected after powering on next time is whether in predetermined scope, if in predetermined scope, then judge that automobile automobile last time is to be parked in level road or the level road that levels off to, if not in predetermined scope, then judge that automobile is parked in non-horizontal road surface, the fuel value collected after then powering on next time is considered as fict fuel oil, it is not used in display.
Embodiment of the present invention, when judging to obtain automobile when travelling under mode state, the fuel value in the fuel tank of automobile is obtained by fuel sensor, compare further according to the fuel value shown when the secondary fuel value got and display instrument, if in default scope, think that the fuel value this time got gets on more normal road surface, do not get when jolting or tilt, then then make display instrument show when the secondary fuel value got；If not in default scope, then it is assumed that this fuel value got gets on improper road surface, i.e. gets when jolting or tilt, then the most do not show the fuel value this time got.When judge obtain automobile under idling mode state time, then show residue fuel consumption values according to the mode under idling mode state in the present embodiment, when automobile be i.e. not in idling mode state be also not in driving mode state time, then think that automobile is in car-parking model state, enter further according to different states and fuel consumption values is processed accordingly.The display automobile fuel oil of present embodiment, can under the different mode state of automobile the fuel oil in the fuel tank of more real display automobile, facilitating car owner under automobile is in different patterns, the real-time true fuel oil grasping automobile, more convenient car owner carries out follow-up action.
Refer to the block diagram that Fig. 5, Fig. 5 are device one embodiments of display automobile Fuel Remained of the present invention.The device of the display automobile Fuel Remained of the present embodiment includes:
Automobile powers on module 101, is used for making automobile to power on IGN；
First acquisition module 102, for after described automobile powers on ING, obtains the fuel value in fuel tank；
The fuel value that first value module 103, the fuel value got before recall power-off of stopping last time in memory block and display instrument show, and take the absolute value of the first difference between them；
First judge module 104, for judging that whether the absolute value of described first difference is less than one first preset value；
Second value module 105, for when described first judge module 104 judges to obtain the absolute value of described first difference less than described first preset value, then the absolute value of the second difference of the fuel value got before taking the fuel value this time got and power-off of stopping described last time；
Second judge module 106, or for judging that whether the absolute value of described second difference is less than equal to one second preset value；
True fuel value determines module 107, for judging that the fuel value that this gets less than or equal to the second preset value, is then considered as real fuel value by the absolute value obtaining described second difference at described second judge module 106；
Display module 108, for when described true fuel oil determines that module 107 determines that the fuel value this time got is real fuel value, shows the fuel value this time got.
In the present embodiment, described true fuel value determines module 107, is additionally operable to when the absolute value that described first judge module 104 judges to obtain described first difference is more than and is equal to described first preset value, then the fuel value that this gets is considered as false fuel value；
Described display module 108, is additionally operable to show stopped last time before power-off and shows the fuel value that instrument shows；
Described true fuel value determines module 107, is additionally operable to when described second judge module 106 judges that the fuel value that this gets more than the second preset value, is then the fuel value got after automobile fuel filler by the absolute value obtaining described second difference；
Described display module 108, is additionally operable to show the fuel value after the oiling this time got.
Embodiment of the present invention, by each functional module above-mentioned can make fuel tank that car owner understands automobile very easily truly or more real Fuel Remained, the car owner that is more convenient for judges whether to need to make next step action according to the true fuel oil of display.
These are only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the invention and accompanying drawing content to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in the scope of patent protection of the present invention.
Claims (10)
1. a method for display automobile Fuel Remained, comprises the following steps:
Automobile powers on IGN；
Obtain the fuel value in fuel tank；
The fuel value that the fuel value that gets before recalling power-off of stopping last time in memory block and display instrument show, and take the absolute value of the first difference between them；
Judge that whether the absolute value of described first difference is less than one first preset value；
If judge the absolute value obtaining described first difference less than described first preset value, then the absolute value of the second difference of the fuel value got before taking the fuel value this time got and power-off of stopping described last time；
Judge that whether the absolute value of described second difference is less than or equal to one second preset value；
If judging, the fuel value that this gets less than or equal to the second preset value, is then considered as real fuel value by the absolute value obtaining described second difference；
The fuel value that display this time gets.
2. the method for display automobile Fuel Remained as claimed in claim 1, it is characterised in that whether be less than in the step of the first preset value at the absolute value judging described first difference, also include:
If judge the absolute value obtaining described first difference more than or equal to described first preset value, then the fuel value that this gets is considered as false fuel value；
Show, before showing power-off of stopping last time, the fuel value that instrument shows.
3. the method for display automobile Fuel Remained as claimed in claim 2, it is characterised in that whether be less than or equal in the step of described second preset value at the absolute value judging described second difference, also include:
If judging, the fuel value that this gets more than described second preset value, is then considered as the fuel value got after automobile fuel filler by the absolute value obtaining described second difference；
Fuel value after the oiling that display this time gets.
4. the method for the display automobile Fuel Remained as described in claim any one of claims 1 to 3, it is characterised in that also include:
Judge whether automobile is in drive mode；
If judging, obtaining described automobile is in drive mode, then obtain the fuel value of fuel tank；
The fuel value this got compares with the front fuel value once shown；
If the fuel value this time got is less than the front fuel value once shown, and when the absolute value of their the 3rd difference is less than three preset value, then the real fuel value fuel value now got being considered as under drive mode；
Show the fuel value that this time gets.
5. the method for display automobile Fuel Remained as claimed in claim 4, it is characterised in that in the step that the fuel value this got and the front fuel value once shown compare, also include:
If the absolute value of the 3rd difference of the fuel value this time got and the front fuel value once shown is more than or equal to described three preset value, then the fuel value that this gets is considered as false fuel value；
Do not show the fuel value this time got.
6. the method for display automobile Fuel Remained as claimed in claim 5, it is characterised in that judging whether automobile is in the step of drive mode, also including:
If judging, obtaining described automobile is in non-drive mode, then judge whether described automobile is in idling mode；
If judge that obtaining described automobile is in idling mode, then calculate a Fuel Remained value every a scheduled time；
The Fuel Remained value that display calculates each time.
7. the method for display automobile Fuel Remained as claimed in claim 6, it is characterised in that if when judging that obtaining described automobile is in idling mode, then calculate in the step of a Fuel Remained value every a scheduled time, including:
At the above-mentioned pulse signal gathering the expression oil consumption that Engine ECU per a period of time sends in a predetermined amount of time；
The pulse signal sent according to ECU per a period of time, analyzed within this period, in this pulse signal, and the number of individual pulse, the distributive value of each pulse；
Number according to the pulse analyzed, the distributive value of each pulse number obtain accumulative oil consumption, and wherein, the distributive value of unit pulse is multiplied by accumulative oil consumption equal to the total pulse number collected in the above-mentioned scheduled time；
Obtaining Fuel Remained value according to accumulative oil consumption, wherein, described Fuel Remained value deducts accumulative oil consumption equal to the front fuel value once shown.
8. the method for display automobile Fuel Remained as claimed in claim 7, it is characterised in that judging whether described automobile is in the step of idling mode, also including: obtaining described automobile is in non-idle mode, then judge whether automobile is in car-parking model if judging；
If judging, obtaining described automobile is in car-parking model, then the fuel value and the last fuel value gathered that are in the display of car-parking model the last time from automobile are stored.
9. a device for display automobile Fuel Remained, including:
Automobile powers on module, is used for making automobile to power on IGN；
First acquisition module, for after described automobile powers on ING, obtains the fuel value in fuel tank；
The fuel value that first value module, the fuel value got before recall power-off of stopping last time in memory block and display instrument show, and take the absolute value of the first difference between them；
First judge module, for judging that whether the absolute value of described first difference is less than one first preset value；
Second value module, is used for when described first judge module judges the absolute value obtaining described first difference less than described first preset value, then the absolute value of the second difference of the fuel value got before taking the fuel value this time got and power-off of stopping described last time；
Second judge module, or for judging that whether the absolute value of described second difference is less than equal to one second preset value；
True fuel value determines module, for judging that the fuel value that this gets less than or equal to the second preset value, is then considered as real fuel value by the absolute value obtaining described second difference at described second judge module；
Display module, for showing the fuel value this time got.
10. the device of display automobile Fuel Remained as claimed in claim 9, it is characterised in that:
Described true fuel value determines module, is additionally operable to when the absolute value that described first judge module judges to obtain described first difference is more than and is equal to described first preset value, then the fuel value that this gets is considered as false fuel value；
Described display module, is additionally operable to show stopped last time before power-off and shows the fuel value that instrument shows；
Described true fuel value determines module, is additionally operable to when described second judge module judges that the fuel value that this gets more than the second preset value, is then the fuel value got after automobile fuel filler by the absolute value obtaining described second difference；
Described display module, is additionally operable to show the fuel value after the oiling this time got.
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| CN201510032172.1A CN105865565B (en) | 2015-01-22 | 2015-01-22 | Method and device for displaying automobile residual fuel |
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| CN201510032172.1A CN105865565B (en) | 2015-01-22 | 2015-01-22 | Method and device for displaying automobile residual fuel |
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| CN105865565B CN105865565B (en) | 2020-08-21 |
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