CN107144316B - A kind of calculation method that automobile instrument oil mass is shown - Google Patents
A kind of calculation method that automobile instrument oil mass is shown Download PDFInfo
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- CN107144316B CN107144316B CN201710287298.2A CN201710287298A CN107144316B CN 107144316 B CN107144316 B CN 107144316B CN 201710287298 A CN201710287298 A CN 201710287298A CN 107144316 B CN107144316 B CN 107144316B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
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Abstract
The invention discloses a kind of calculation methods that automobile instrument oil mass is shown in automobile instrument field, including following 1) acquisition AD signal；2) judge whether reference point is established, be, then enter in next step, it is no, then it establishes reference point and enters in next step；3) judge that vehicle is to forbid or move；3-1) static, judgement establishes whether reference point is established, and is then to enter in next step, otherwise establishes reference point and enter in next step；It establishes and refers to comparison point；Judge whether to refuel, if so, updating oil mass information, if it is not, then subtracting distributive value with current display oil mass, first-order linear damps algorithm process；It 3-2) moves, removes reference point；Whether oil amount determination is lower than " oil mass is low " threshold values, is, then uses current display oil mass to subtract atomizer distributive value as display oil mass, no, first-order linear damping algorithm process is shown as current oil mass；4) according to 1) -3) it recycles, strong antijamming capability of the present invention can accurately show oil mass, can be applied in automobile oil mass monitoring system.
Description
Technical field
The present invention relates to a kind of automobile oil mass display system, in particular to a kind of automobile oil mass shows calculation method.
Background technique
Turn currently, automobile oil mass table only passes through after microprocessor carries out analog sampling to the resistance signal in fuel sensor
Digital signal is turned to, then digital signal is converted into Fuel Oil Remaining and is shown, but in vehicle travel process, since road surface is run
Winnow with a dustpan, the turn of vehicle and the factors such as bring to a halt can cause the pasta in fuel tank to shake, lead to the output oil mass on fuel sensor
There are biggish deviations with practical fuel tank fuel quantity, or even display is caused to jump, and the judgement of mistake is brought to user.
Summary of the invention
The object of the present invention is to provide a kind of calculation methods that automobile instrument oil mass is shown, can not be put down by external interference
Steady accurate display automobile fuel oil is remaining.
The object of the present invention is achieved like this: a kind of calculation method that automobile instrument oil mass is shown, which is characterized in that packet
Include following steps:
Step 1) instrument powers on, and fuel level sensor acquires AD signal；
Step 2 judges whether reference point is established, if so, into next step, if it is not, then establishing reference point and entering
Next step；
Step 3) judges that vehicle is illegal state or motion state；
Step 3-1) if stationary state:
Step 3-1-1) judge to establish whether reference point is established, if so, into next step, if it is not, then establishing reference
It puts and enters next step；
Step 3-1-2) it establishes with reference to comparison point；
Step 3-1-3) judge whether to refuel, if the oil mass with reference to comparison point is greater than reference point, and it is greater than priming valve
Value, then it is assumed that be oiling processing, update oil mass information immediately, if it is not, then distributive value is subtracted with current display oil mass, by single order
Linear damping algorithm process is shown as current oil mass；
Step 3-2) if motion state；
Step 3-2-1) remove reference point；
Step 3-2-2) whether oil amount determination is lower than " oil mass is low " threshold values, if so, subtracting oil spout with current display oil mass
Mouth distributive value is as display oil mass, if it is not, then showing by first-order linear damping algorithm process as current oil mass；
Step 4) is recycled according to step 1)-step 3).
Compared with prior art, the beneficial effects of the present invention are strong antijamming capability of the present invention can accurately show oil
Amount, while without making change to hardware configuration, it may be directly applied in existing automobile oil mass monitoring system.
In order to further increase precision of the invention, step 3) first-order linear damps algorithm specifically:
Sensor acquisition oil mass SensorVol and current display oil mass FuelVol are compared；
If it is equal, and counter DampCnt is damped greater than 0, damping counter successively decreases, until being 0；
If sensor, which acquires oil mass SensorVol, is greater than current display oil mass FuelVol, and mark of refueling
IncFlag is arranged to 1, then damps counter DampCnt and progressively increase, and when reaching IncLimited, display oil mass increases 1/512L,
And counter DampCnt clear 0 is damped, it is equal to 0 if refueling and indicating other IncFlag, it is 1 that IncFlag, which is arranged, and under entrance
One circulation；
If sensor, which acquires oil mass SensorVol, is less than current display oil mass FuelVol, and subtracts oil ga(u)ge knowledge
DecFlag is arranged to 1, then damps counter DampCnt and progressively increase, and when reaching DecLimited, display oil mass reduces 1/512L,
And counter DampCnt clear 0 is damped, if subtracting oil ga(u)ge shows that other DecFlag is equal to 0, it is 1 that DecFlag, which is arranged, and is entered
Next circulation；
Wherein, damping counter DampCnt initial value be 0, IncLimited, DecLimited can according to actual needs into
Row setting.
In order to further increase the stability of reference point foundation, the specific method that reference point is established in step 2 and step 3)
Are as follows:
Detect whether current state is StateInit state；If so, initialization delay counter DelayCnt is 0, just
Beginningization sample counter AveCnt is 0, and enters StateDelay state；If it is not, then detection is StateDelay
State；If it is StateDelay state, then judge whether upper KL30 electricity for the first time, is if it is directly entered StateBuild
State, if not first time upper KL30 electricity, delay counter DelayCnt cycle count, when DelayCnt reaches Limit, into
Enter StateBuild state；If not StateDelay state, then detection is StateBuild state, if it is
StateBuild state, and sensor acquisition signal is effective, then adds up sampled value summation, reach AveLimit times, calculating is adopted
Sample average value, the average value are reference point, and setting reference point useful signal RefValid is 1, into StateReady state；
If not in StateBuild state, then whether detection is in StateReady state, if it is in StateReady state,
Indicate that reference point is successfully established, reference point foundation terminates；If not in StateReady state, then detection whether
StateReset state then terminates to establish if it is in StateReset state, if not in StateReset state, then examines
It whether surveys in StateErr state, no matter whether all terminates this reference point in StateErr state and establish；
StateInit state is init state.
In order to further increase the stability for referring to comparison point and establishing, the specific side for referring to comparison point is established in step 3)
Method are as follows:
If being currently StateInit state, initialization delay counter DelayCnt is 0, initializes sample counter
AveCnt is 0, into StateBuild state；If not in StateInit state, then whether detection is in StateBuild
State, if in StateBuild state, and sensor acquisition signal is effective, then adds up sampled value summation, reach
AveLimit times, sample mean is calculated, which is to refer to comparison point, into StateReady state；If not
In StateBuild state, then whether in StateReady state, StateInit state is init state for detection.
Detailed description of the invention
Fig. 1 is work flow diagram of the present invention.
Fig. 2 is that first-order linear damps algorithm flow chart in the present invention.
Fig. 3 is reference point method for building up flow chart in the present invention.
Fig. 4 is that comparison point method for building up flow chart is referred in the present invention.
Specific embodiment
A kind of calculation method that automobile instrument oil mass is shown as shown in Figs 1-4, which comprises the following steps:
Step 1) instrument powers on, and fuel level sensor acquires AD signal；
Step 2 judges whether reference point is established, if so, into next step, if it is not, then establishing reference point and entering
Next step, what reference point was established method particularly includes: whether detection current state is StateInit state；If so, initialization
Delay counter DelayCnt is 0, and initialization sample counter AveCnt is 0, and enters StateDelay state；If no
It is that then detection is StateDelay state；If it is StateDelay state, then judge whether upper KL30 electricity for the first time,
If it is it is directly entered StateBuild state, if not first time upper KL30 electricity, delay counter DelayCnt circulation
It counts, when DelayCnt reaches Limit, into StateBuild state；If not StateDelay state, then detection is not
It is StateBuild state, if it is in StateBuild state, and sensor acquisition signal is effective, then adds up sampled value and ask
With, reach AveLimit times, calculate sample mean, which is reference point, be arranged reference point useful signal
RefValid is 1, into StateReady state；If not in StateBuild state, then detection whether
StateReady state indicates that reference point is successfully established if it is in StateReady state, and reference point foundation terminates；If
It is not in StateReady state, then whether detection if it is in StateReset state then ties in StateReset state
Shu Jianli, if not in StateReset state, then whether detection is in StateErr state, no matter whether
StateErr state all terminates the foundation of this reference point；StateInit state is init state；
Step 3) judges that vehicle is illegal state or motion state；
Step 3-1) if stationary state:
Step 3-1-1) judge to establish whether reference point is established, if so, into next step, if it is not, then establishing reference
It puts and enters next step；
Step 3-1-2) it establishes with reference to comparison point, method particularly includes: if being currently StateInit state, initialization is prolonged
Hour counter DelayCnt is 0, and initialization sample counter AveCnt is 0, into StateBuild state；If not
Whether StateInit state then detects in StateBuild state, if in StateBuild state, and sensor is adopted
Collect signal it is effective, then add up sampled value summation, reach AveLimit time, calculate sample mean, the average value be reference than
Compared with point, into StateReady state；If not in StateBuild state, then whether detection is in StateReady shape
State, StateInit state are init state；
Step 3-1-3) judge whether to refuel, if the oil mass with reference to comparison point is greater than reference point, and it is greater than priming valve
Value, then it is assumed that be oiling processing, update oil mass information immediately, if it is not, then distributive value is subtracted with current display oil mass, by single order
Linear damping algorithm process shows that first-order linear damps algorithm specifically: sensor is acquired oil mass as current oil mass
SensorVol and current display oil mass FuelVol compare；If it is equal, and counter DampCnt is damped greater than 0, damping is counted
Number device successively decreases, until being 0；If sensor, which acquires oil mass SensorVol, is greater than current display oil mass FuelVol, and refuels
Mark IncFlag is arranged to 1, then damps counter DampCnt and progressively increase, and when reaching IncLimited, display oil mass increases by 1/
512L, and counter DampCnt clear 0 is damped, it is equal to 0 if refueling and indicating other IncFlag, it is 1 that IncFlag, which is arranged, is gone forward side by side
Enter next circulation；If sensor, which acquires oil mass SensorVol, is less than current display oil mass FuelVol, and subtracts oil ga(u)ge knowledge
DecFlag is arranged to 1, then damps counter DampCnt and progressively increase, and when reaching DecLimited, display oil mass reduces 1/512L,
And counter DampCnt clear 0 is damped, if subtracting oil ga(u)ge shows that other DecFlag is equal to 0, it is 1 that DecFlag, which is arranged, and is entered
Next circulation；Wherein, damping counter DampCnt initial value is 0, and IncLimited, DecLimited can be according to practical need
It is configured；
Step 3-2) if motion state；
Step 3-2-1) remove reference point；
Step 3-2-2) whether oil amount determination is lower than " oil mass is low " threshold values, if so, subtracting oil spout with current display oil mass
Mouth distributive value is as display oil mass, if it is not, then showing by first-order linear damping algorithm process as current oil mass, first-order linear
Damping algorithm is same as above；
Step 4) is recycled according to step 1)-step 3).
The present invention is not limited to the above embodiments, on the basis of technical solution disclosed by the invention, the skill of this field
For art personnel according to disclosed technology contents, one can be made to some of which technical characteristic by not needing creative labor
A little replacements and deformation, these replacements and deformation are within the scope of the invention.
Claims (3)
1. a kind of calculation method that automobile instrument oil mass is shown, which comprises the following steps:
Step 1) instrument powers on, and fuel level sensor acquires AD signal；
Step 2 judges whether reference point is established, if so, into next step, if it is not, then establishing reference point and entering next
Step；
Step 3) judges that vehicle is stationary state or motion state；
Step 3-1) if stationary state:
Step 3-1-1) judge to establish whether reference point is established, if so, into next step, if it is not, then establishing reference point simultaneously
Into next step；
Step 3-1-2) it establishes with reference to comparison point；
Step 3-1-3) judge whether to refuel, if the oil mass with reference to comparison point is greater than reference point, and it is greater than oiling threshold values, then
It is considered that oiling is handled, updates oil mass information immediately, if it is not, then distributive value is subtracted with current display oil mass, by first-order linear
Algorithm process is damped, is shown as current oil mass；The first-order linear damps algorithm specifically:
Sensor acquisition oil mass SensorVol and current display oil mass FuelVol are compared；
If it is equal, and counter DampCnt is damped greater than 0, damping counter successively decreases, until being 0；
If sensor, which acquires oil mass SensorVol, is greater than current display oil mass FuelVol, and refuels and identify IncFlag quilt
It is set as 1, then damps counter DampCnt and progressively increases, when reaching IncLimited, display oil mass increases 1/512L, and damps meter
Number device DampCnt clear 0, if the mark IncFlag that refuels is equal to 0, it is 1 that IncFlag, which is arranged, and enters next circulation；
If sensor, which acquires oil mass SensorVol, is less than current display oil mass FuelVol, and subtracts oil ga(u)ge and know DecFlag quilt
It is set as 1, then damps counter DampCnt and progressively increases, when reaching DecLimited, display oil mass reduces 1/512L, and damps
Counter DampCnt clear 0 is equal to 0 if subtracting oil ga(u)ge and knowing DecFlag, and it is 1 that DecFlag, which is arranged, and enters next circulation；
Wherein, damping counter DampCnt initial value is 0, and IncLimited, DecLimited can be set according to actual needs
It sets
Step 3-2) if motion state；
Step 3-2-1) remove reference point；
Step 3-2-2) whether oil amount determination is lower than " oil mass is low " threshold values, if so, subtracting atomizer spray with current display oil mass
Oil mass is as display oil mass, if it is not, then showing by first-order linear damping algorithm process as current oil mass；
Step 4) is recycled according to step 1)-step 3).
2. a kind of calculation method that automobile instrument oil mass is shown according to claim 1, which is characterized in that step 2 and step
It is rapid 3) in reference point establish method particularly includes:
Detect whether current state is StateInit state；If so, initialization delay counter DelayCnt is 0, initialization
Sample counter AveCnt is 0, and enters StateDelay state；If it is not, then detection is StateDelay state；
If it is StateDelay state, then judge whether upper KL30 electricity for the first time, be if it is directly entered StateBuild state,
If not first time upper KL30 electricity, delay counter DelayCnt cycle count enters when DelayCnt reaches Limit
StateBuild state；If not StateDelay state, then detection is StateBuild state, if it is
StateBuild state, and sensor acquisition signal is effective, then adds up sampled value summation, reach AveLimit times, calculating is adopted
Sample average value, the average value are reference point, and setting reference point useful signal RefValid is 1, into StateReady state；
If not in StateBuild state, then whether detection is in StateReady state, if it is in StateReady state,
Indicate that reference point is successfully established, reference point foundation terminates；If not in StateReady state, then detection whether
StateReset state then terminates to establish if it is in StateReset state, if not in StateReset state, then examines
It whether surveys in StateErr state, no matter whether all terminates this reference point in StateErr state and establish；
StateInit state is init state.
3. a kind of calculation method that automobile instrument oil mass is shown according to claim 1, which is characterized in that built in step 3)
It stands with reference to comparison point method particularly includes:
If being currently StateInit state, initialization delay counter DelayCnt is 0, initializes sample counter
AveCnt is 0, into StateBuild state；If not in StateInit state, then whether detection is in StateBuild
State, if in StateBuild state, and sensor acquisition signal is effective, then adds up sampled value summation, reach
AveLimit times, sample mean is calculated, which is to refer to comparison point, into StateReady state；If not
In StateBuild state, then whether in StateReady state, StateInit state is init state for detection.
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110411527A (en) * | 2019-07-11 | 2019-11-05 | 北京汽车股份有限公司 | Oil consumption display methods, vehicle, cloud server, oil mass display system |
| CN112161663B (en) * | 2020-09-29 | 2024-04-26 | 北京车和家信息技术有限公司 | Vehicle residual oil amount determining method, device, equipment and vehicle |
| CN114739485B (en) * | 2022-03-24 | 2022-12-13 | 润芯微科技(江苏)有限公司 | Automobile fuel calibration method and system |
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| CN101660923A (en) * | 2009-09-08 | 2010-03-03 | 重庆长安汽车股份有限公司 | Remaining driving mileage processing method of automobile combination meter |
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