CN113879122A - Method for detecting information of using fuel tank in double-fuel-tank vehicle - Google Patents
Method for detecting information of using fuel tank in double-fuel-tank vehicle Download PDFInfo
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- CN113879122A CN113879122A CN202111216194.5A CN202111216194A CN113879122A CN 113879122 A CN113879122 A CN 113879122A CN 202111216194 A CN202111216194 A CN 202111216194A CN 113879122 A CN113879122 A CN 113879122A
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- 239000002828 fuel tank Substances 0.000 title claims abstract description 105
- 238000000034 method Methods 0.000 title claims abstract description 63
- 239000000446 fuel Substances 0.000 claims abstract description 70
- 239000003921 oil Substances 0.000 claims description 130
- 238000001914 filtration Methods 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 13
- 238000012544 monitoring process Methods 0.000 claims description 11
- 239000010763 heavy fuel oil Substances 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 3
- 239000010913 used oil Substances 0.000 abstract description 4
- 239000000295 fuel oil Substances 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 108010084233 deltaran Proteins 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000105 evaporative light scattering detection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
- B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
- B60K35/28—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
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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
- G01F23/22—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 by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—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 by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
- B60K2360/16—Type of output information
- B60K2360/171—Vehicle or relevant part thereof displayed
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention provides a method for detecting information of an oil tank in use in a double-oil-tank vehicle type, which comprises a method for identifying the oil tank in use in the double-oil-tank vehicle type, wherein the method for identifying the oil tank in use in the double-oil-tank vehicle type comprises the following steps: s1, in the running process of the vehicle, the vehicle controller collects signal resistance values R of the oil mass sensors of the first oil tank and the second oil tank, S2, and the vehicle controller calculates an average value delta R of the resistance values of the oil mass sensors; s3, the vehicle controller stores the signal resistance values R of the fuel quantity sensors of the first fuel tank and the second fuel tank, draws an average resistance change curve, and judges the state of the fuel tank in use according to the slope of the average resistance change curve of the fuel tank, S4, the vehicle controller sends the judgment result in the step S3 to the instrument, and the instrument displays that the first fuel tank or the second fuel tank is in use. Compared with the prior art, the invention can realize the function of synchronously displaying the used oil tank to the instrument.
Description
Technical Field
The invention relates to the technical field of oil mass detection, in particular to a method for detecting information of an oil tank in use in a double-oil-tank vehicle type.
Background
At present, more and more multiple commercial tractors are equipped with two fuel tanks in a standard way, and the two fuel tanks comprise a first fuel tank and a second fuel tank, wherein the first fuel tank is generally used for adding high-grade diesel oil, the environment with the temperature higher than 0 ℃ is normally used, the second fuel tank is added with low-grade diesel oil, the cost is high, the two fuel tanks are used for starting vehicles in the environment with the temperature lower than 0 ℃, and after the starting of an engine is finished, the second fuel tank needs to be manually switched to the first fuel tank in order to save the use cost.
In the prior art, a switching device is divided into two parts, one is a manual fuel switching valve which is used for switching an oil tank; the other is a manual cab selector switch which is used for switching the oil quantity display of the instrument, the two parts exist independently, and the driver needs to switch independently and synchronously and needs to operate respectively.
The disadvantage of the prior art is that the following problems are easy to occur in the actual switching process by adopting the switching device in the prior art:
a driver manually switches the second oil tank to the first oil tank, but forgets to switch the instrument display switch, and the fuel switching valve and the instrument display switch are not synchronous, so that the residual oil quantity of the oil tank in use cannot be synchronously displayed to the instrument; the fuel quantity display of the instrument is inconsistent with the residual fuel quantity in the used fuel tank, so that customer complaints are caused, and the more serious result is that the instrument displays the residual fuel quantity, the fuel of the actual fuel tank is not filled in time, and the condition of fuel shortage and flameout of an engine occurs in the driving process. And the driver cannot judge that the meter indicates that the amount of fuel remaining in the tank is not in use.
Disclosure of Invention
The invention provides a method for detecting information of an oil tank in use in a double-oil-tank vehicle type, which is used for solving the defect that the residual oil quantity of the oil tank in use can not be synchronously displayed on an instrument easily in the mode of manually switching to the oil tank in the prior art.
The invention provides a method for detecting information of an oil tank in use in a double-oil-tank vehicle type, which comprises a method for identifying the oil tank in use in the double-oil-tank vehicle type, wherein the method for identifying the oil tank in use in the double-oil-tank vehicle type comprises the following steps:
s1, in the running process of the vehicle, the vehicle controller collects signal resistance values R of the fuel quantity sensors of the first fuel tank and the second fuel tank, wherein resistance signals collected by the fuel quantity sensor of the first fuel tank are Ra1 and Ra2.. Ran, and resistance signals collected by the fuel quantity sensor of the second fuel tank are Rb1 and Rb2.. Rbn;
s2, the vehicle controller calculates the resistance average value delta R of the oil sensor;
s3, the vehicle control unit stores the signal resistance values R of the fuel quantity sensors of the first fuel tank and the second fuel tank, draws an average resistance change curve, and judges the state of the fuel tank in use according to the slope of the average resistance change curve of the fuel tank, wherein the state of the fuel tank in use comprises: the first oil tank is used, or the vehicle uses the second oil tank, or the first oil tank and the second oil tank are not used by the vehicle;
and S4, the vehicle control unit sends the judgment result in the step S3 to the meter, and the meter displays that the first oil tank or the second oil tank is used.
According to the method for detecting the information of the fuel tank in use in the double-fuel-tank vehicle, in step S1, a filtering algorithm is adopted to filter the abrupt change value in the signal resistance value R of the fuel quantity sensor.
According to the method for detecting the in-use fuel tank information in the dual-fuel-tank vehicle, in step S1, the filtering algorithm is as follows: when the resistance value Rm of a certain fuel is not in the range of [ Rm-1, Rm +1], and the | Rm-Rm-1| ≧ Rm +1-Rm-1| & | Rm +1-Rm | > Rm +1-Rm-1|, judging that Rm is invalid, filtering Rm by adopting a filtering algorithm, and collecting the next resistance value Rm +1 to replace Rm.
According to the method for detecting the currently used oil tank information in the double-oil-tank vehicle type, the slope of the average resistance change curve of the oil tank in the step S3 comprises a slope value K1 of the resistance change curve of the remaining fuel oil amount of the first oil tank and a slope value K2 of the resistance change curve of the remaining fuel oil amount of the second oil tank, and the calculation formula is as follows:
K1＝(δRan-δRan-1)/1；
K2＝(δRbn-δRbn-1)/1。
according to the method for detecting the information of the fuel tank in use in the double-fuel-tank vehicle, in the step S3, the use condition of the fuel tank is judged according to the following method:
when K1 is greater than 0 and K2 is less than or equal to 0, the vehicle is judged to be using the first oil tank;
when K1 is less than or equal to 0 and K2 is greater than 0, the vehicle is judged to be using the second oil tank;
when the vehicle is stationary when K1 is 0 or K2 is 0, it is determined that the vehicle is not using the first tank or the second tank, and the vehicle is in a stopped state.
According to the method for detecting the information of the fuel tank in use in the double-fuel-tank vehicle type, in step S1, the vehicle controller collects the signal resistance values R of the fuel quantity sensors of the first fuel tank and the second fuel tank once every 1 millisecond.
According to the method for detecting the information of the fuel tank in use in the double-fuel-tank vehicle type, the method for detecting the information of the fuel tank in use in the double-fuel-tank vehicle type further comprises a method for calculating the fuel quantity of the fuel tank, and the method for calculating the fuel quantity of the fuel tank comprises the following steps: the vehicle control unit collects signals of the fuel level monitoring sensor in real time, judges the condition of a running road of the vehicle, selects different algorithms according to the condition of the running road to obtain the resistance value of the processed fuel level sensor, sends the resistance value of the processed fuel level sensor to the instrument, and the instrument displays the residual fuel level resistance value of the fuel tank.
According to the method for detecting the information of the oil tank in use in the double-oil-tank vehicle type, the vehicle control unit sends the processed oil quantity sensor resistance value of the oil tank in use to the meter according to the judgment result in the step S3, and the meter displays the remaining fuel oil level resistance value of the oil tank in use.
According to the method for detecting the fuel tank information being used in the dual-fuel-tank vehicle type, the method for calculating the fuel amount of the fuel tank comprises the following steps: bumpy road surfaces, turning road surfaces, flat road surfaces, uphill road surfaces and downhill road surfaces.
According to the method for detecting the information of the fuel tank in use in the double-fuel-tank vehicle type, the method for calculating the fuel quantity of the fuel tank comprises the following steps:
if the vehicle is judged to be an uphill road surface and a downhill road surface, the vehicle control unit adopts a compensation algorithm: carrying out difference compensation on the resistance value of the oil quantity sensor according to the signal value alpha of the actual oil tank liquid level monitoring sensor;
if the vehicle is judged to be a bumpy road surface or a turning road surface, the vehicle control unit adopts a filtering algorithm: the peak value and the trough value of the signal of the oil mass sensor are removed, and then the acquired value is calculated, so that sudden change of the oil mass sensor caused by bumpy roads, sharp turns and the like is avoided;
if the vehicle is judged to be a flat road surface, the vehicle control unit averages the signals of the oil quantity sensor.
According to the invention, signals of the first oil tank and the second oil tank are switched into the vehicle control unit from the previous meter display change-over switch device, the oil tank in use is identified through an algorithm, the meter receives information of the vehicle control unit, and a display frame pops up on a central interface to remind a customer of using the first oil tank or the second oil tank, so that the oil tank in use is synchronously displayed on the meter.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for detecting the information of the fuel tank in use in a dual fuel tank vehicle type according to the present invention;
fig. 2 is a schematic structural diagram of an apparatus in the method for detecting the in-use tank information in the dual-tank vehicle type according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The method for detecting the in-use tank information in the two-tank vehicle type of the present invention will be described below with reference to fig. 1 to 2.
The invention provides a method for detecting information of an oil tank in use in a double-oil-tank vehicle type, which comprises a method for identifying the oil tank in use in the double-oil-tank vehicle type, wherein the method for identifying the oil tank in use in the double-oil-tank vehicle type comprises the following steps:
s1, in the running process of the vehicle, the vehicle controller collects signal resistance values R of the fuel quantity sensors of the first fuel tank and the second fuel tank, wherein resistance signals collected by the fuel quantity sensor of the first fuel tank are Ra1 and Ra2.. Ran, and resistance signals collected by the fuel quantity sensor of the second fuel tank are Rb1 and Rb2.. Rbn;
s2, the vehicle controller calculates the resistance average value delta R of the oil sensor;
the average value of the resistances of the first oil tank oil quantity sensor is delta Ra1 and delta Ra2 … delta Ran;
the average value of the resistance of the second oil tank oil quantity sensor is delta Rb1 and delta Rb2 … delta Rbn;
δRa1＝(Ra1+Ra2+…Ra1000)/1000；
δRa2＝(Ra1001+Ra1002+…Ra2000)/1000；
…
and so on;
δRb1＝(Rb1+Rb2+…Rb1000)/1000；
δRb2＝(Rb1001+Rb1002+…Rb2000)/1000；
…
and so on.
S3, the vehicle control unit stores the signal resistance values R of the fuel quantity sensors of the first fuel tank and the second fuel tank, draws an average resistance change curve, and judges the state of the fuel tank in use according to the slope of the average resistance change curve of the fuel tank, wherein the state of the fuel tank in use comprises: the first oil tank is used, or the vehicle uses the second oil tank, or the first oil tank and the second oil tank are not used by the vehicle;
and S4, the vehicle control unit sends the judgment result in the step S3 to the meter, and the meter displays that the first oil tank or the second oil tank is used.
In the above embodiment, in step S1, the vehicle controller collects the fuel quantity sensor signal resistance values R of the first fuel tank and the second fuel tank once every 1 millisecond.
In the above embodiment, in step S1, the abrupt change value in the fuel level sensor signal resistance value R is filtered by a filter algorithm.
In the above embodiment, in step S1, the filtering algorithm is: when the resistance value Rm of a certain fuel is not in the range of [ Rm-1, Rm +1], and the | Rm-Rm-1| ≧ Rm +1-Rm-1| & | Rm +1-Rm | > Rm +1-Rm-1|, judging that Rm is invalid, filtering Rm by adopting a filtering algorithm, and collecting the next resistance value Rm +1 to replace Rm.
In the above embodiment, the slope of the average tank resistance curve in step S3 includes the slope value K1 of the resistance curve of the remaining fuel in the first tank and the slope value K2 of the resistance curve of the remaining fuel in the second tank, and the calculation formula is as follows:
K1＝(δRan-δRan-1)/1；
K2＝(δRbn-δRbn-1)/1。
in the above embodiment, in step S3, the usage of the fuel tank is determined according to the following method:
when K1 is greater than 0 and K2 is less than or equal to 0, the vehicle is judged to be using the first oil tank;
when K1 is less than or equal to 0 and K2 is greater than 0, the vehicle is judged to be using the second oil tank;
when the vehicle is static when K1 is equal to K2 is equal to 0, the vehicle is judged not to use the first oil tank or the second oil tank, and the vehicle is in a stop state;
according to an embodiment of the present invention, the method for detecting the fuel tank information being used in the dual fuel tank vehicle further includes a method for calculating a fuel tank amount, and the method for calculating the fuel tank amount includes the following steps: the vehicle control unit collects signals of the fuel level monitoring sensor in real time, judges the condition of a running road of the vehicle, selects different algorithms according to the condition of the running road to obtain the resistance value of the processed fuel level sensor, sends the resistance value of the processed fuel level sensor to the instrument, and the instrument displays the residual fuel level resistance value of the fuel tank.
In the above embodiment, the vehicle controller sends the processed fuel amount sensor resistance value of the fuel tank in use to the meter according to the determination result in step S3, and the meter displays the remaining fuel level resistance value of the fuel tank in use.
In the above embodiment, the method for calculating the tank fuel amount may include: bumpy road surfaces, turning road surfaces, flat road surfaces, uphill road surfaces and downhill road surfaces.
In the above embodiment, the method for calculating the tank fuel amount includes:
if the vehicle is judged to be an uphill road surface and a downhill road surface, the vehicle control unit adopts a compensation algorithm: carrying out difference compensation on the resistance value of the oil quantity sensor according to the signal value alpha of the actual oil tank liquid level monitoring sensor;
if the vehicle is judged to be a bumpy road surface or a turning road surface, the vehicle control unit adopts a filtering algorithm: the peak value and the trough value of the signal of the oil mass sensor are removed, and then the acquired value is calculated, so that sudden change of the oil mass sensor caused by bumpy roads, sharp turns and the like is avoided;
if the vehicle is judged to be a flat road surface, the vehicle control unit averages the signals of the oil quantity sensor.
According to the invention, signals of the first oil tank and the second oil tank are switched into the vehicle control unit from the previous meter display change-over switch device, the oil tank in use is identified through an algorithm, the meter receives information of the vehicle control unit, and a display frame pops up on a central interface to remind a customer of using the first oil tank or the second oil tank, so that the oil tank in use is synchronously displayed on the meter.
In the above embodiment, the vehicle controller collects the signal value α of the fuel tank liquid level monitoring sensor, where different α represent the state change of the actual liquid level, and determines the conditions of the vehicle liquid level such as uphill, turning, downhill, bumpy road and the like according to the state of the α value, and then the controller compensates the difference caused by the fluctuation of the fuel liquid level to the residual fuel quantity resistance value of the fuel tank in use.
The information finally sent to the instrument by the vehicle control unit comprises: the first oil tank or the second oil tank is in use; the remaining fuel level resistance of the tank is being used.
Referring to fig. 2, the present invention provides a device for detecting the using-tank information in a dual-tank vehicle, including: the fuel level monitoring system comprises a vehicle control unit, a fuel level monitoring sensor, an instrument, a first fuel tank, a second fuel tank, a first fuel tank fuel quantity sensor, a second fuel tank fuel quantity sensor, a first fuel tank fuel pipe, a second fuel tank fuel pipe and a manual fuel tank switching device. Wherein:
the first oil tank and the second oil tank are independent tanks and are not connected in series through channels. The fuel oil switching device is respectively and independently connected with the first fuel tank and the second fuel tank through oil pipes.
The working principle of the oil tank liquid level detection sensor is as follows: the sensor sends out ultrasonic wave pulse, the sound wave pulse is reflected by the fuel level and converted into electric signal by the ultrasonic receiver, the state of the fuel level is calculated by the time between the emission and the reception of the sound wave, and the fluctuation change of the fuel level is judged.
The oil tank liquid level monitoring sensor is electrically connected with a finished automobile controller, an oil tank liquid level information electric signal is sent to the finished automobile controller, the running state of the automobile is judged through liquid level change, and finally, the liquid level signal of the compensation oil tank is convenient to correct in real time.
The first oil tank and the second oil tank transmit resistance signals of the oil quantity sensor to the whole vehicle controller in real time; the whole vehicle control is electrically connected with the instrument, and the result calculated by the whole vehicle controller is sent to the instrument for display; the larger the resistance of the oil amount sensor, the less the amount of remaining oil.
In the method for detecting the information of the currently used oil tank in the double-oil-tank vehicle type, signals of oil quantity sensors of a first oil tank and a second oil tank are switched into a whole vehicle controller from a previous meter display change-over switch device, and the whole vehicle controller collects and calculates the oil quantity signals of the remaining oil tanks of the first oil tank and the second oil tank in real time; the meter receives the information of the whole vehicle controller, pops up a display frame on the central interface to remind a customer of using a first oil tank or a second oil tank, and displays the oil quantity of the remaining oil tank using the oil tank; and the synchronous display of the residual oil quantity of the used oil tank to the meter is realized.
In the method for detecting the information of the oil tank in use in the double-oil-tank vehicle type, the vehicle control unit collects the signal of the oil quantity sensor in real time and judges the oil tank in use through an internal filtering algorithm and a resistance value change curve slope comparison algorithm; the vehicle control unit calculates an oil mass sensor signal, collects a fuel liquid level monitoring sensor signal and compensates a resistance signal of the oil mass sensor; namely: the vehicle control unit collects and calculates a residual oil quantity signal of the oil tank in real time, sends the signal to the instrument, and the instrument displays that the residual oil quantity signal is always synchronous with the residual oil quantity of the oil tank in use. The invention cancels an instrument display change-over switch device, and the whole vehicle controller judges the residual oil quantity of the oil tank in use and sends the residual oil quantity to the instrument; the vehicle control unit synchronously acquires position fuel level signals, and the resistance value of the fuel quantity sensor of the fuel tank is compensated in advance, so that errors caused by road condition changes such as bumping and turning of the vehicle fuel tank are avoided.
Compared with the prior art, the detection method for using the oil tank information in the double-oil-tank vehicle type can realize the following technical effects:
(1) the instrument display is automatically switched along with the switching of the oil tank, and the synchronization is kept.
(2) The meter displays in real time the amount of fuel remaining in the fuel tank being used.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for detecting information of an oil tank in use in a double-oil-tank vehicle type is characterized by comprising a method for identifying the oil tank in use in the double-oil-tank vehicle type, wherein the method for identifying the oil tank in use in the double-oil-tank vehicle type comprises the following steps:
s1, in the running process of the vehicle, the vehicle controller collects signal resistance values R of the fuel quantity sensors of the first fuel tank and the second fuel tank, wherein resistance signals collected by the fuel quantity sensor of the first fuel tank are Ra1 and Ra2.. Ran, and resistance signals collected by the fuel quantity sensor of the second fuel tank are Rb1 and Rb2.. Rbn;
s2, the vehicle controller calculates the resistance average value delta R of the oil sensor;
s3, the vehicle control unit stores the signal resistance values R of the fuel quantity sensors of the first fuel tank and the second fuel tank, draws an average resistance change curve, and judges the state of the fuel tank in use according to the slope of the average resistance change curve of the fuel tank, wherein the state of the fuel tank in use comprises: the first oil tank is used, or the vehicle uses the second oil tank, or the first oil tank and the second oil tank are not used by the vehicle;
and S4, the vehicle control unit sends the judgment result in the step S3 to the meter, and the meter displays that the first oil tank or the second oil tank is used.
2. The method for detecting the in-use tank information in a two-tank vehicle according to claim 1, wherein in step S1, a filtering algorithm is used to filter the abrupt change value in the fuel level sensor signal resistance value R.
3. The method for detecting the in-use tank information in a two-tank vehicle according to claim 2, wherein in step S1, the filtering algorithm is: when the resistance value Rm of a certain fuel is not in the range of [ Rm-1, Rm +1], and the | Rm-Rm-1| ≧ Rm +1-Rm-1| & | Rm +1-Rm | > Rm +1-Rm-1|, judging that Rm is invalid, filtering Rm by adopting a filtering algorithm, and collecting the next resistance value Rm +1 to replace Rm.
4. The method as claimed in claim 3, wherein the slope of the average curve of the fuel tank resistances in step S3 includes a slope value K1 of the curve of the remaining fuel amount in the first fuel tank and a slope value K2 of the curve of the remaining fuel amount in the second fuel tank, and the calculation formula is as follows:
K1＝(δRan-δRan-1)/1；
K2＝(δRbn-δRbn-1)/1。
5. the method for detecting the use of the fuel tank in the two-tank vehicle according to claim 4, wherein in step S3, the use condition of the fuel tank is judged according to the following method:
when K1 is greater than 0 and K2 is less than or equal to 0, the vehicle is judged to be using the first oil tank;
when K1 is less than or equal to 0 and K2 is greater than 0, the vehicle is judged to be using the second oil tank;
when the vehicle is stationary when K1 is 0 or K2 is 0, it is determined that the vehicle is not using the first tank or the second tank, and the vehicle is in a stopped state.
6. The method for detecting the in-use tank information in the two-tank vehicle according to claim 1, wherein in step S1, the vehicle control unit collects the fuel quantity sensor signal resistance values R of the first and second fuel tanks once every 1 ms.
7. The method for detecting the in-use tank information in a two-tank vehicle type according to any one of claims 1 to 6, wherein the method for detecting the in-use tank information in a two-tank vehicle type further comprises a method for calculating a tank fuel amount, the method for calculating the tank fuel amount comprising the steps of: the vehicle control unit collects signals of the fuel level monitoring sensor in real time, judges the condition of a running road of the vehicle, selects different algorithms according to the condition of the running road to obtain the resistance value of the processed fuel level sensor, sends the resistance value of the processed fuel level sensor to the instrument, and the instrument displays the residual fuel level resistance value of the fuel tank.
8. The method for detecting the in-use tank information in a two-tank vehicle type according to claim 7, wherein the vehicle control unit sends the processed fuel quantity sensor resistance value of the in-use tank to the meter according to the determination result in the step S3, and the meter displays the remaining fuel level resistance value of the in-use tank.
9. The method for detecting usage of tank information in a two-tank vehicle according to claim 8, wherein the method for calculating the amount of tank fuel includes: bumpy road surfaces, turning road surfaces, flat road surfaces, uphill road surfaces and downhill road surfaces.
10. The method for detecting the use of the tank information in the two-tank vehicle type according to claim 9, wherein the method for calculating the tank fuel amount includes:
if the vehicle is judged to be an uphill road surface and a downhill road surface, the vehicle control unit adopts a compensation algorithm: carrying out difference compensation on the resistance value of the oil quantity sensor according to the signal value alpha of the actual oil tank liquid level monitoring sensor;
if the vehicle is judged to be a bumpy road surface or a turning road surface, the vehicle control unit adopts a filtering algorithm: the peak value and the trough value of the signal of the oil mass sensor are removed, and then the acquired value is calculated, so that sudden change of the oil mass sensor caused by bumpy roads, sharp turns and the like is avoided;
if the vehicle is judged to be a flat road surface, the vehicle control unit averages the signals of the oil quantity sensor.
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