CN103487100A - Oil mass monitoring method - Google Patents
Oil mass monitoring method Download PDFInfo
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- CN103487100A CN103487100A CN201310397128.1A CN201310397128A CN103487100A CN 103487100 A CN103487100 A CN 103487100A CN 201310397128 A CN201310397128 A CN 201310397128A CN 103487100 A CN103487100 A CN 103487100A
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Abstract
The invention discloses an oil mass monitoring method. comprising the following steps of a presetting step: presetting at least one special condition; a storing step: collecting the oil mass data of an oil tank as historical oil mass data for storing; a judging step: collecting the current oil mass data of the oil tank and comparing with the historical oil mass data, judging whether the oil mass data accords with the special condition, and executing a special step if yes; the special step: reporting the current oil mass data to a crane computer, and assigning all oil mass data participating the calculation as the current oil mass data. By adopting the scheme, the problems of slow change and sudden change of the data, incapability of measuring the maximum oil mass value and the like are solved in the fueling or fuel stealing process of a vehicle, and the oil mass monitoring method has strong practical value.
Description
Technical field
The present invention relates to the oil mass monitoring, in particular, a kind of fuel quantity monitoring method.
Background technology
Automobile is in the situation that occur to refuel or stolen, report the data of car running computer should change rapidly and there is good continuity, because the oil mass of fuel tank and data thereof are simulating signals, saltus step can not occur, yet the oil mass watch-dog existed in the market refuels or all has problems during the stolen condition meeting, be summed up mainly contain following some.
(1) data that automobile reports car running computer when refueling or steal oil remain unchanged, and finish to occur the data sudden change refueling or steal oil, report the sudden change of running counter to existence general knowledge that the data of car running computer occur;
(2) automobile is when refueling, and the oil mass monitoring module sends to the data variation of car running computer slow, and the data variation that reports car running computer is too slow;
(3) the oil mass monitoring module sends to the data of car running computer, after the oiling condition occurs, even there will be the situation lower than the fuel tank fuel quantity actual value, measures less than the fuel tank fuel quantity maximal value.
For example; for solving automobile, on the road surface of jolting, travel; the a lot of producers of the stability of automobile oil mass measurement data have adopted Mean Filtering Algorithm; but mean filter needs a large amount of historical datas; when refueling or stealing the generation of deep-fried twisted dough sticks part; because average has caused the data variation that reports car running computer extremely slow; if the driver drives immediately to set out on a journey after oiling finishes; vehicle needs to consume oil plant in the process of moving, and this has just caused the oil mass monitoring module to measure less than the maximal value of filling it up with oily rear fuel tank oil mass.If new data more not in refueling process, fill it up with after oil to upgrade immediately and there will be the data sudden change of running counter to existence general knowledge.
Therefore, there is defect in prior art, needs to improve.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of new fuel quantity monitoring method.
Technical scheme of the present invention is as follows: a kind of fuel quantity monitoring method, and it comprises the following steps; Pre-set step: pre-set at least one specific condition; Storing step: the oil mass data that gather fuel tank are stored as historical oil mass data; Determining step: gathering the current oil mass data of fuel tank, make comparisons with described historical oil mass data, judge whether to meet arbitrary described specific condition, is to carry out specific step; Specific step: described current oil mass data are reported to described car running computer, and, by the whole assignment of all oil mass data that participate in calculating, be current oil mass data.
Preferably, in described fuel quantity monitoring method, described specific condition at least comprise Vehicle Speed, Vehicle Speed change threshold, oil mass variation tendency, oil mass change threshold one of them.
Preferably, in described fuel quantity monitoring method, in described determining step, otherwise continue to judge whether current oil mass data are greater than stored historical oil mass data; Described historical oil mass data to be reported to car running computer as current oil mass data; Otherwise more described current oil mass data and described historical oil mass data, judge whether comparative result belongs to the predetermined threshold value scope, be described current oil mass data to be reported to described car running computer, otherwise described historical oil mass data are reported to described car running computer as current oil mass data.
Preferably, in described fuel quantity monitoring method, after described current oil mass data report described car running computer, also carry out following step display: described car running computer shows the oil mass data that it receives.
Preferably, in described fuel quantity monitoring method, the current oil mass data of described collection fuel tank, carry out following steps: the current oil mass data that gather fuel tank by very first time interval.
Preferably, in described fuel quantity monitoring method, before gathering the current oil mass data of fuel tank, also carry out following steps: pre-set described very first time interval.
Preferably, in described fuel quantity monitoring method, the described current oil mass data that gather fuel tank by very first time interval, carry out following steps: adopt timer to start the collection of modulus data from the sample survey, gather the current oil mass data of fuel tank by very first time interval, the current oil mass data of the first quantity of obtaining continuously of take are one group, and averaging, obtain the first average current oil mass data; By the first average current oil mass data of second time interval to the second quantity of continuous acquisition, averaging, obtain the second average current oil mass data, as the described current oil mass data of subsequent step.
Preferably, in described fuel quantity monitoring method, in described determining step, before described current oil mass data and described historical oil mass data are made comparisons, also carry out following steps: judge whether described current oil mass data exceed default zone of reasonableness, to abandon described current oil mass data, the current oil mass data of Resurvey fuel tank.
Preferably, in described fuel quantity monitoring method, by participate in to calculate, be global variable and be initialized as peaked at least 50 times of sensing data with the variable set up of current data for saving historical data.
Preferably, in described fuel quantity monitoring method, by depositing the array define that reports car running computer, be global variable and the maximal value that is initialized as sensing data.
Adopt such scheme, the present invention on the basis that does not change hardware and mounting condition, solved automobile fuel filler or steal in oily process data variation slowly, data sudden change and measuring less than problems such as oil mass maximal values, there is very strong practical value.
The accompanying drawing explanation
The schematic diagram that Fig. 1 is one embodiment of the present of invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
One embodiment of the present of invention are, a kind of fuel quantity monitoring method, and it comprises the following steps.
Pre-set step: pre-set at least one specific condition; For example, described specific condition comprises one or more or whole in Vehicle Speed, Vehicle Speed change threshold, oil mass variation tendency, oil mass change threshold.For example, described specific condition is that Vehicle Speed is 100 kilometers/hour; And for example, described specific condition is that Vehicle Speed changed over 20 kilometers/hour at 5 seconds or 10 seconds; And for example, described specific condition is when Vehicle Speed is greater than zero, and oil mass rises; And for example, described specific condition be oil mass within 10 seconds or 50 seconds, the change over 10 liters or 20 liters; And for example, described specific condition is measured oil mass twice before and after being, change is over 10 liters or 20 liters; And for example, described specific condition be flame-out before with start after, measure oil mass twice, change is over 10 liters or 20 liters; And for example, one of above-mentioned condition or multinomial combination.The flexible setting of these conditions, the effect of can reach sensitive, accurately monitoring oil mass.
It should be noted that; above-mentioned specific embodiment; not as for the additional limits that pre-sets at least one specific condition of the present invention, only need to explain in the present invention pre-set at least one specific condition scope within, be all that the present invention is disclosed and wish the protection domain reached.
Like this, by setting and the design of specific condition, can abandon the impact that a lot of error messages cause, follow-up by described current oil mass data are reported to described car running computer, and, by the whole assignment of all oil mass data that participate in calculating, be current oil mass data; Can effectively solve the data that automobile reports car running computer when refueling or steal oil the sudden change problem appears, while solving automobile fuel filler, often occur measuring less than the fuel tank fuel quantity max problem and solve automobile meet refuel or while stealing the deep-fried twisted dough sticks part oil meter show slow problem, reach very practical effect.
For example, if stolen, before stolen with stolen after twice measurement must differ very large, adopt the inventive method, car running computer can be notified the user on the one hand in time, on the other hand can the true current oil mass information of sensitive reaction.
Storing step: the oil mass data that gather fuel tank are stored as historical oil mass data; For example, carry out described storing step after refueling; And for example, carry out described storing step when vehicle launch; And for example, before determining step starts, carry out described storing step.
Determining step: gathering the current oil mass data of fuel tank, make comparisons with described historical oil mass data, judge whether to meet arbitrary described specific condition, is to carry out specific step; Preferably, judgement does not meet arbitrary described specific condition, continues to judge whether current oil mass data are greater than stored historical oil mass data; Described historical oil mass data to be reported to car running computer as current oil mass data; Otherwise more described current oil mass data and described historical oil mass data, judge whether comparative result belongs to the predetermined threshold value scope, be described current oil mass data to be reported to described car running computer, otherwise described historical oil mass data are reported to described car running computer as current oil mass data.
That is to say, meet arbitrary described specific condition, carry out follow-up specific step; Judgement does not meet arbitrary described specific condition, continues to judge whether current oil mass data are greater than stored historical oil mass data.Judge that current oil mass data are greater than stored historical oil mass data, report car running computer using described historical oil mass data as current oil mass data; Otherwise more described current oil mass data and described historical oil mass data.More described current oil mass data and described historical oil mass data, judge whether comparative result belongs to the predetermined threshold value scope, be described current oil mass data to be reported to described car running computer, otherwise described historical oil mass data are reported to described car running computer as current oil mass data.
Preferably, in described fuel quantity monitoring method, in described determining step, before described current oil mass data and described historical oil mass data are made comparisons, also carry out following steps: judge whether described current oil mass data exceed default zone of reasonableness, to abandon described current oil mass data, the current oil mass data of Resurvey fuel tank.For example, if the numerical value of current oil mass data is obviously unreasonable, for example surpassed the volume of fuel tank, or surpassed the data after refueling, described current oil mass data, the current oil mass data of Resurvey fuel tank.Like this, contribute to obtain oil mass data more accurately, avoid data generation fluctuation, thereby affect measurement result.
Preferably, the current oil mass data of described collection fuel tank, carry out following steps: the current oil mass data that gather fuel tank by very first time interval.For example, gather the current oil mass data of a fuel tank at interval of 0.2 second or 0.5 second.
Preferably, before gathering the current oil mass data of fuel tank, also carry out following steps: pre-set described very first time interval.For example, the default described very first time is spaced apart 0.1 second, 0.2 second, 0.25 second, 0.3 second, 0.5 second, 1 second or 2 seconds etc.For example, the described current oil mass data that gather fuel tank by very first time interval, carry out following steps: adopt timer to start the collection of modulus data from the sample survey, gather the current oil mass data of fuel tank by very first time interval, the current oil mass data of the first quantity of obtaining continuously of take are one group, averaging, obtain the first average current oil mass data; By the first average current oil mass data of second time interval to the second quantity of continuous acquisition, averaging, obtain the second average current oil mass data, as the described current oil mass data of subsequent step.
Specific step: described current oil mass data are reported to described car running computer, and, by the whole assignment of all oil mass data that participate in calculating, be current oil mass data.
Preferably, after described current oil mass data report described car running computer, also carry out following step display: described car running computer shows the oil mass data that it receives.Like this, the user can understand the oil mass data by car running computer easily.
Preferably, in described fuel quantity monitoring method, by participate in to calculate, be global variable and be initialized as peaked at least 50 times of sensing data with the variable set up of current data for saving historical data.For example, be initialized as peaked 60 times, 80 times or 100 times of sensing datas.Preferably, by depositing the array define that reports car running computer, be global variable and the maximal value that is initialized as sensing data.
The present invention has utilized passage technology, and an example as shown in Figure 1, at first judges whether to meet and refuels or steal the deep-fried twisted dough sticks part, is to adopt current AD value (A/D conversion value) to upgrade to participate in the historical data of calculating, and continues to gather the oil mass data; Otherwise adopt median filter method to calculate the oil mass data, offer car running computer.For example, a kind of median filtering method is, gets 10 AD values at every turn, removes maximal value wherein, minimum value and gets the mean value of 8 AD values of residue.And for example, got rid of outside abnormal data, or, after having got rid of the data that exceed default zone of reasonableness, got 5 AD values at every turn, got its mean value, as current oil mass data, offered car running computer.
For example, when automobile when meet refueling or steal the deep-fried twisted dough sticks part, the AD value that microprocessor stops original Mean Filtering Algorithm sensor that current every 200 milliseconds of collections are once obtained is immediately upgraded all historical datas of participation mean filter immediately, be equivalent to open up a specific channel on the basis of original medium filtering, and this value is reported to car running computer.Specific implementation as shown in Figure 1.
For example, the method of mean filter is as follows, at first, start the AD sampling with timer, once fuel tank is sampled every 200 milliseconds of startups, obtain current data, data from the sample survey is placed on array a[5], obtain 5 data p.s., then p.s. is by array a[5] in be placed on array b[5 after data summations] in.Then, every 5 seconds to array b[5] data summations, like this, array b[5] comprised 5 groups of information of 25 data altogether, 5 groups and number, sued for peace with number to these 5 groups, then to its averaging, obtain the average of 25 data, this average be placed on to array c[6], be placed on array d[60 simultaneously] in.
As d[60] array is when empty, data are from d[0] start to deposit, after array is filled with, array first is shifted once, removes historical data d[0], latest data is placed on to d[60 simultaneously] last of array, data in array are every one of 5 second, 60 data totally 5 minutes; For example, adopt the FIFO first-in first-out to carry out the data management of array.
For example, array a[5], b[5], c[6] adopt round-robin queue's mode to deposit, array d[60] in the data common queue deposit, new data is come in, historical data removes, array d[60] in data according to the front and back of time, sorted; Like this, array a[5], b[5], c[6], d[60] between separate hinge mutually layer by layer again, make data there is continuity, be easy to eliminate accidental error, can obtain more true and reliable oil mass data.
Then, every 1 second by array d[60] in data summations, averaging after, the average obtained is reported to car running computer; Preferably, be to guarantee the automobile sparking start after rapidity and the stability of data, at regular intervals, for example, 6 minutes, by array d[60] in data write EEPROM and store away, start is directly read, and has effectively guaranteed rapidity and the flatness of data.
And, the present invention also arranges the self-starting technology of oil plant monitoring module, for guaranteeing that vehicle reports the stability of car running computer data in the process of moving, validity, the present invention has adopted mean filter, median filtering algorithm, for reducing the oil mass monitoring module, automobile fuel filler or the erroneous judgement of stealing the deep-fried twisted dough sticks part have been adopted to Vehicle Speed, the various comprehensive means such as oil mass variation tendency and threshold value, for the accuracy that guarantees automobile measurement data when oiling occurring or steal the deep-fried twisted dough sticks part adopts latest data to upgrade the method for all historical datas, the setting of these threshold values, the employing of passage technology is equivalent to dig a lot of traps on expressway, can cause the system operation exception if deal with improperly.For guaranteeing the smooth startup of oil mass monitoring module, the present invention has adopted following processing to the special variable occurred in computing method.
Participate in that medium filtering saves historical data and the variable set up of current data is global variable and is initialized as 409600, to deposit the array define that reports car running computer be global variable and be initialized as 4096, and sensors A D is 12, and 2 12 powers are 4096.That is, the maximal value that to deposit the array that reports car running computer be sensors A D, participate in that medium filtering saves historical data and the variable set up of current data is to deposit 100 times of the array that reports car running computer.
The various embodiments described above of the present invention, the data sudden change of running counter to existence general knowledge occurred for oil mass monitoring module on Present Domestic market, data variation slowly reaches to be measured less than the peaked problem of fuel tank fuel quantity, and has found effective solution; Solved automobile in the generation oiling or the mistake of running counter to existence general knowledge of the data appearance that reports car running computer occurred in stealing oily process by the employing passage technology; And adopt the self-starting technology of oil plant monitoring module to solve the instability problem that system may occur.
Various embodiments of the present invention, the simple use, do not need to increase extra circuit and solved automobile in the generation oiling or the mistake of running counter to existence general knowledge of the data appearance that reports car running computer occurred in stealing oily process; And solved in the system fluctuation of service problem with causing in passage technology, medium filtering and various Threshold process; Solved automobile reports the data of car running computer the sudden change problem to occur when refueling or steal oil; While having solved automobile fuel filler, often occur measuring less than the fuel tank fuel quantity max problem; Also solve automobile oil meter when meeting oiling or stealing the deep-fried twisted dough sticks part and shown slow problem.And the present invention carried out for a long time on passenger vehicle, installation testing repeatedly, and test data is stable, test error is low, and data smoothing is good, reaches the condition of application fully.
Further, embodiments of the invention can also be, each technical characterictic of the various embodiments described above, the fuel quantity monitoring method mutually be combined to form.
It should be noted that, above-mentioned each technical characterictic continues combination mutually, forms the various embodiment that do not enumerate in the above, all is considered as the scope of instructions record of the present invention; And, for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (10)
1. a fuel quantity monitoring method, is characterized in that, comprises the following steps;
Pre-set step: pre-set at least one specific condition;
Storing step: the oil mass data that gather fuel tank are stored as historical oil mass data;
Determining step: gathering the current oil mass data of fuel tank, make comparisons with described historical oil mass data, judge whether to meet arbitrary described specific condition, is to carry out specific step;
Specific step: described current oil mass data are reported to described car running computer, and, by the whole assignment of all oil mass data that participate in calculating, be current oil mass data.
2. fuel quantity monitoring method according to claim 1, is characterized in that, described specific condition at least comprise Vehicle Speed, Vehicle Speed change threshold, oil mass variation tendency, oil mass change threshold one of them.
3. fuel quantity monitoring method according to claim 2, is characterized in that, in described determining step, otherwise continues to judge whether current oil mass data are greater than stored historical oil mass data;
Described historical oil mass data to be reported to car running computer as current oil mass data;
Otherwise more described current oil mass data and described historical oil mass data, judge whether comparative result belongs to the predetermined threshold value scope, be described current oil mass data to be reported to described car running computer, otherwise described historical oil mass data are reported to described car running computer as current oil mass data.
4. fuel quantity monitoring method according to claim 3, is characterized in that, after described current oil mass data report described car running computer, also carry out following step display: described car running computer shows the oil mass data that it receives.
5. fuel quantity monitoring method according to claim 1, is characterized in that, the current oil mass data of described collection fuel tank are carried out following steps: the current oil mass data that gather fuel tank by very first time interval.
6. fuel quantity monitoring method according to claim 5, is characterized in that, before gathering the current oil mass data of fuel tank, also carries out following steps: pre-set described very first time interval.
7. fuel quantity monitoring method according to claim 6, is characterized in that, the described current oil mass data that gather fuel tank by very first time interval are carried out following steps:
Adopt timer to start the collection of modulus data from the sample survey, gather the current oil mass data of fuel tank by very first time interval, the current oil mass data of the first quantity of obtaining continuously of take are one group, and averaging, obtain the first average current oil mass data;
By the first average current oil mass data of second time interval to the second quantity of continuous acquisition, averaging, obtain the second average current oil mass data, as the described current oil mass data of subsequent step.
8. fuel quantity monitoring method according to claim 7, it is characterized in that, in described determining step, before described current oil mass data and described historical oil mass data are made comparisons, also carry out following steps: judge whether described current oil mass data exceed default zone of reasonableness, to abandon described current oil mass data, the current oil mass data of Resurvey fuel tank.
9. according to the arbitrary described fuel quantity monitoring method of claim 1 to 8, it is characterized in that, by participate in to calculate, be global variable and be initialized as peaked at least 50 times of sensing data with the variable set up of current data for saving historical data.
10. fuel quantity monitoring method according to claim 9, is characterized in that, by depositing the array define that reports car running computer, is global variable and the maximal value that is initialized as sensing data.
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CN105184893A (en) * | 2015-07-20 | 2015-12-23 | 怯肇乾 | Automobile oil consumption, refueling and oil stealing real-time monitoring and oil stealing prevention alarming realization method |
CN106409269A (en) * | 2016-08-18 | 2017-02-15 | 浙江吉利控股集团有限公司 | Fully-automatic adjustment system and method for display effect of automobile multimedia display screen |
CN108020296A (en) * | 2017-11-24 | 2018-05-11 | 吉旗(成都)科技有限公司 | A kind of oil sense event recognition algorithm based on ultrasonic technology |
CN110426101A (en) * | 2019-05-20 | 2019-11-08 | 北京中位科技有限公司 | A kind of fuel tank fuel quantity monitoring optimizing method |
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