CN104089684A - Automobile fuel gauge calibration method - Google Patents
Automobile fuel gauge calibration method Download PDFInfo
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- CN104089684A CN104089684A CN201410329473.6A CN201410329473A CN104089684A CN 104089684 A CN104089684 A CN 104089684A CN 201410329473 A CN201410329473 A CN 201410329473A CN 104089684 A CN104089684 A CN 104089684A
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Abstract
The invention discloses an automobile fuel gauge calibration method. Initial fuel amount parameters are determined; the whole automobile fuel matching test is carried out, fuel filling is carried out on a whole automobile, the fuel sensor resistance value of a key point is input through calibration software and is written into a stepping motor control program through a CAN device, the stepping motor control program is stored in an instrument control module in advance, searches for the motor microstep value corresponding to a stepping motor based on the fuel sensor resistance value and controls the stepping motor to rotate based on the motor microstep value, a fuel gauge pointer is driven to rotate along with the rotation of the stepping motor, and if the fuel gauge pointer points at the key point, the fuel sensor resistance value is the fuel sensor resistance value calibration amount of the key point, and next filling is carried out; if the fuel gauge pointer does not point at the key point, the fuel sensor resistance value of the key point is modified again through the calibration software until the fuel gauge pointer points at the key point. The automobile fuel gauge calibration method is easy to operate and high in efficiency.
Description
Technical field
The invention belongs to the scaling method of automobile combination meter, be specifically related to a kind of scaling method of automobile fuel gauge.
Background technology
Combination instrument is the interface of man-machine interaction in automobile, and fuel gauge is the important component part of combination instrument, is used to indicate the residue situation of current fuel tank intermediate fuel oil.This table is answered indicating correct, to accurately reflect the situation of current oil tank fuel, guarantee the safety of driving, and the demarcation of fuel gauge is the key that ensures its instruction accuracy.
Therefore, be necessary to develop a kind of scaling method of automobile fuel gauge.
Summary of the invention
The object of this invention is to provide a kind of scaling method of simple to operate, automobile fuel gauge that efficiency is high.
The scaling method of a kind of automobile fuel gauge of the present invention, comprises the following steps:
Step 1, fuel tank is positioned over to surface level, taking AL as unit to filling liquid in fuel tank, wherein, and 1≤A≤2, the height of liquid level is once measured in every filling afterwards, and the corresponding relation of recording liquid volume and liquid level, till being filled into fuel tank always and filling;
Step 2, fixing fuel pump, determine the point of fixity of float connecting link, make float connecting link can be taking this point of fixity as round dot, the length of float connecting link rotates as radius on vertical plane, rotate float connecting link, the float of fuel sensor is moved to extreme higher position from extreme lower position gradually, and measure the change in resistance of fuel sensor with multimeter, in the time that the resistance of multimeter measurement changes, the distance of extreme lower position place surface level is arrived at the now float center of measuring, and records float center to the distance of extreme lower position place surface level and the corresponding relation of resistance;
Step 3, according to described step 2, several fuel pumps are tested;
Step 4, according to the float center of the corresponding relation of the liquid capacity of described step 1 gained and liquid level and described step 2 and step 3 gained to the distance of extreme lower position place surface level and the corresponding relation of resistance, draw the corresponding relation of volume of fuel tank and fuel sensor resistance;
Step 5, in the volume of fuel tank of described step 4 gained and fuel sensor resistance corresponding relation, choose several key points as initial amount of fuel parameter;
Step 6, carry out car load fuel oil match test according to the selected key point of described step 5: by stationary vehicle in horizontal level, computer is electrically connected with CAN equipment, CAN equipment is electrically connected in instrument control module by diagnostics port, use the calibration software of installing on computers, carry out input and the demonstration of amount of fuel parameter by this calibration software, on car load, carry out successively from small to large fuel filling according to the volume of several key points, after fuel oil of every filling, first input the fuel sensor resistance of this key point by calibration software, this fuel sensor resistance is written in pre-stored step motor control program in instrument control module by CAN equipment, Electric Machine Control program is searched the corresponding motor micro-stepping of stepper motor value based on this fuel sensor resistance, and based on this motor micro-stepping value control step electric machine rotation, this motor micro-stepping value is sent to computer shows simultaneously, stepper motor drives fuel gauge pointer to rotate when rotation, if fuel gauge pointer is indicated at this key point place, the i.e. fuel sensor resistance scalar quantity of key point for this reason of this fuel sensor resistance, and annotate next time, if fuel gauge pointer is not indicated at this key point place, revise the fuel sensor resistance of this key point by calibration software, until fuel gauge pointer is indicated at this key point place, the fuel sensor resistance finally writing is the corresponding resistance of sensor scalar quantity of this key point, annotate again, until all key points have been demarcated next time.
Several key points of described step 4 are respectively E point (that is: empty oil level), 1/4 oil level point, 1/2 oil level point, 3/4 oil level point and F point (that is: full oil level).
A=1 in described step 1.
The scaling method of automobile fuel gauge of the present invention has the following advantages:
(1) the present invention only needs a computer, CAN equipment, multimeter, that ruler and a measuring cup can be realized, and this scaling method simply and is easily realized, and the cost dropping into is few.
(2), in car load fuel oil match test, the amount of fuel parameter value of directly revising the step motor control program in instrument control module that is preset at by computer mates with real vehicle; Avoid repeating to revise step motor control program, programming program, test procedure and carrying out car load fuel oil match test, greatly shortened test period and verification experimental verification expense, and operation is very simple.
(3) parameter such as fuel sensor resistance, oil mass and motor micro-stepping value can intuitively show by computer, makes calibration process visualize, high efficiency and precision.
Brief description of the drawings
Fig. 1 is volume of the present invention and liquid level corresponding relation figure;
Fig. 2 is that fuel sensor float of the present invention center is to the distance of extreme lower position place surface level and the corresponding relation of output resistance;
Fig. 3 is volume of fuel tank of the present invention and fuel sensor resistance value corresponding relation;
Fig. 4 is process flow diagram of the present invention;
Fig. 5 is amount of fuel parameter calibration of the present invention interface;
Fig. 6 is the theory diagram of change amount of fuel parameter of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
The scaling method of a kind of automobile fuel gauge as shown in Figures 1 to 4, comprises the following steps:
Step 1, fuel tank is positioned over to surface level, taking 1L(or 2L) as unit to fuel tank in filling liquid, the height of liquid level is once measured in every filling afterwards, and the corresponding relation of recording liquid volume and liquid level, till being filled into fuel tank always and filling.
Step 2, fixing fuel pump, determine the point of fixity of float connecting link, make float connecting link can be taking this point of fixity as round dot, the length of float connecting link rotates as radius on vertical plane, rotate float connecting link, make the float of fuel sensor move to extreme higher position from extreme lower position gradually, and measure the change in resistance of fuel sensor with multimeter, in the time that the resistance of multimeter measurement changes, the distance of extreme lower position place surface level is arrived at the now float center of measuring, and records float center to the distance of extreme lower position place surface level and the corresponding relation of resistance.
Step 3, according to described step 2, three fuel pumps are tested.
Step 4, according to the float center of the corresponding relation of the liquid capacity of described step 1 gained and liquid level and described step 2 and step 3 gained to the distance of extreme lower position place surface level and the corresponding relation of resistance, draw the corresponding relation of volume of fuel tank and fuel sensor resistance.
Step 5, in the volume of fuel tank of described step 4 gained and fuel sensor resistance corresponding relation, choose five key points as initial amount of fuel parameter, five key points are respectively E(hole oil level), 1/4 oil level point, 1/2 oil level point, 3/4 oil level point and the full oil level of F().
Step 6, carry out car load fuel oil match test according to five selected key points of described step 5: by stationary vehicle in horizontal level, computer is electrically connected with CAN equipment, CAN equipment is electrically connected in instrument control module by diagnostics port, use the calibration software of installing on computers, carry out input and the demonstration of amount of fuel parameter by this calibration software, on car load, carry out successively from small to large fuel filling according to the volume of five key points, after fuel oil of every filling, first operating personnel input the fuel sensor resistance of this key point by calibration software, this fuel sensor resistance is written in pre-stored step motor control program in instrument control module by CAN equipment, Electric Machine Control program is searched the corresponding motor micro-stepping of stepper motor value based on this fuel sensor resistance, and based on this motor micro-stepping value control step electric machine rotation, this motor micro-stepping value is sent to computer shows simultaneously, stepper motor drives fuel gauge pointer to rotate when rotation, if fuel gauge pointer is indicated at this key point place, the i.e. fuel sensor resistance scalar quantity of key point for this reason of this fuel sensor resistance, and annotate next time, if fuel gauge pointer is not indicated at this key point place, operating personnel revise the fuel sensor resistance of this key point by calibration software, the fuel sensor resistance of new input is written in the step motor control program in instrument control module by CAN equipment, and the fuel sensor resistance that the last time writes is covered, fuel sensor resistance of every amendment, the fuel sensor resistance based on new input is searched the corresponding motor micro-stepping of stepper motor value by Electric Machine Control program, and based on this motor micro-stepping value control step electric machine rotation, until fuel gauge pointer is indicated at this key point place, the fuel sensor resistance finally writing is the corresponding resistance of sensor scalar quantity of this key point, annotate again next time, until all key points have been demarcated.
As shown in Figure 5 and Figure 6, when computer expert crosses CAN equipment connection to after in instrument control module, use the calibration software on computer, operating personnel send to instrument control module the mode of extension request that enters by calibration software, then send safety certification request to instrument control module, if safety certification is passed through, operating personnel can be by the program interface input fuel sensor resistance of calibration software, the EEPROM(that this fuel sensor resistance is delivered to instrument control module with the form of diagnosis message is: band EEPROM (Electrically Erasable Programmable Read Only Memo)), this diagnosis message comprises the physical address that fuel sensor resistance and this fuel sensor resistance need to write, when instrument control module receives after this diagnosis message, find this physical address and fuel sensor resistance is write in this physical address, finally be mapped to again in the corresponding logical address of this physical address, thereby realize, the data that are preset in the step motor control program in instrument control module are modified.
Describe as 20L fuel oil as example taking 1/2 oil level point below:
First to the fuel oil of car load filling 20L, then observe the pointer of fuel gauge and whether indicate the position at 1/2 oil level point, if fail the position of instruction at 1/2 oil level point, revise fuel sensor resistance by computer, if the pointer of fuel gauge is indicated in the position of 1/2 oil level point, this fuel sensor resistance is key point 1/2 oil level and puts corresponding resistance of sensor scalar quantity.If the pointer of fuel gauge is not indicated yet in the position of 1/2 oil level point, continue amendment fuel sensor resistance until the pointer of fuel gauge is indicated the position at 1/2 oil level point.After this key point has been demarcated, carry out in this way the demarcation of next key point.
Claims (3)
1. a scaling method for automobile fuel gauge, is characterized in that, comprises the following steps:
Step 1, fuel tank is positioned over to surface level, taking AL as unit to filling liquid in fuel tank, wherein, and 1≤A≤2, the height of liquid level is once measured in every filling afterwards, and the corresponding relation of recording liquid volume and liquid level, till being filled into fuel tank always and filling;
Step 2, fixing fuel pump, determine the point of fixity of float connecting link, make float connecting link can be taking this point of fixity as round dot, the length of float connecting link rotates as radius on vertical plane, rotate float connecting link, the float of fuel sensor is moved to extreme higher position from extreme lower position gradually, and measure the change in resistance of fuel sensor with multimeter, in the time that the resistance of multimeter measurement changes, the distance of extreme lower position place surface level is arrived at the now float center of measuring, and records float center to the distance of extreme lower position place surface level and the corresponding relation of resistance;
Step 3, according to described step 2, several fuel pumps are tested;
Step 4, according to the float center of the corresponding relation of the liquid capacity of described step 1 gained and liquid level and described step 2 and step 3 gained to the distance of extreme lower position place surface level and the corresponding relation of resistance, draw the corresponding relation of volume of fuel tank and fuel sensor resistance;
Step 5, in the volume of fuel tank of described step 4 gained and fuel sensor resistance corresponding relation, choose several key points as initial amount of fuel parameter;
Step 6, carry out car load fuel oil match test according to the selected key point of described step 5: by stationary vehicle in horizontal level, computer is electrically connected with CAN equipment, CAN equipment is electrically connected in instrument control module by diagnostics port, use the calibration software of installing on computers, carry out input and the demonstration of amount of fuel parameter by this calibration software, on car load, carry out successively from small to large fuel filling according to the volume of several key points, after fuel oil of every filling, first input the fuel sensor resistance of this key point by calibration software, this fuel sensor resistance is written in pre-stored step motor control program in instrument control module by CAN equipment, Electric Machine Control program is searched the corresponding motor micro-stepping of stepper motor value based on this fuel sensor resistance, and based on this motor micro-stepping value control step electric machine rotation, this motor micro-stepping value is sent to computer shows simultaneously, stepper motor drives fuel gauge pointer to rotate when rotation, if fuel gauge pointer is indicated at this key point place, the i.e. fuel sensor resistance scalar quantity of key point for this reason of this fuel sensor resistance, and annotate next time, if fuel gauge pointer is not indicated at this key point place, revise the fuel sensor resistance of this key point by calibration software, until fuel gauge pointer is indicated at this key point place, the fuel sensor resistance finally writing is the corresponding resistance of sensor scalar quantity of this key point, annotate again, until all key points have been demarcated next time.
2. the scaling method of automobile fuel gauge according to claim 1, is characterized in that: several key points of described step 4 are respectively E point, 1/4 oil level point, 1/2 oil level point, 3/4 oil level point and F point.
3. the scaling method of automobile fuel gauge according to claim 1 and 2, is characterized in that: the A=1 in described step 1.
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104482992A (en) * | 2014-11-27 | 2015-04-01 | 华晨汽车集团控股有限公司 | Control method for automobile fuel gauge |
| CN105181068A (en) * | 2015-06-03 | 2015-12-23 | 伊飚科技(深圳)有限公司 | Liquid volume measuring device based on ultrasonic wave, liquid volume measuring method and monitoring method |
| CN105486373A (en) * | 2016-01-19 | 2016-04-13 | 黄亮 | Liquid storage tank and liquid weight measuring method |
| CN106227197A (en) * | 2016-08-31 | 2016-12-14 | 上海伟世通汽车电子系统有限公司 | The autocontrol method of automobile instrument artifical resistance input |
| CN106404127A (en) * | 2016-08-31 | 2017-02-15 | 芜湖天宇科技开发有限公司 | Fuel sensor resistance ratio detection bench and detection method thereof |
| CN106908115A (en) * | 2017-02-24 | 2017-06-30 | 北京中位科技有限公司 | Vehicle fuel tank fuel quantity scaling method and system |
| CN107063400A (en) * | 2016-11-18 | 2017-08-18 | 安徽江淮汽车集团股份有限公司 | A kind of calibration system of automobile instrument and fuel tank |
| CN108656951A (en) * | 2017-03-31 | 2018-10-16 | 华晨汽车集团控股有限公司 | A kind of control method of automobile fuel gauge |
| CN108917889A (en) * | 2018-07-26 | 2018-11-30 | 安徽江淮汽车集团股份有限公司 | A kind of fuel gauge test macro and method |
| CN109084867A (en) * | 2018-07-11 | 2018-12-25 | 黑龙江天有为电子有限责任公司 | A kind of automobile combination meter fuel oil emulation test system and method |
| CN109579949A (en) * | 2017-09-28 | 2019-04-05 | 惠州市德赛西威汽车电子股份有限公司 | A method of judging that oil float subcard is stagnant |
| CN110553703A (en) * | 2019-10-14 | 2019-12-10 | 广州创锐车用电器有限公司 | Calibration information generation method and system based on oil meter |
| CN110987130A (en) * | 2019-12-26 | 2020-04-10 | 安为机电设备制造(上海)有限公司 | Flowmeter detection system and detection method thereof |
| CN112440740A (en) * | 2020-12-01 | 2021-03-05 | 东风越野车有限公司 | Vehicle power take-off system and power take-off and calibration method thereof |
| CN113532565A (en) * | 2021-06-03 | 2021-10-22 | 惠州市德赛西威汽车电子股份有限公司 | Automobile fuel tank fuel simulation test method and system |
| CN116499544A (en) * | 2023-06-30 | 2023-07-28 | 广东润宇传感器股份有限公司 | Storage tank volume calibration method, system, electronic equipment and storage medium |
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| CN104482992B (en) * | 2014-11-27 | 2018-04-17 | 华晨汽车集团控股有限公司 | A kind of control method of automobile fuel gauge |
| CN104482992A (en) * | 2014-11-27 | 2015-04-01 | 华晨汽车集团控股有限公司 | Control method for automobile fuel gauge |
| CN105181068A (en) * | 2015-06-03 | 2015-12-23 | 伊飚科技(深圳)有限公司 | Liquid volume measuring device based on ultrasonic wave, liquid volume measuring method and monitoring method |
| CN105486373A (en) * | 2016-01-19 | 2016-04-13 | 黄亮 | Liquid storage tank and liquid weight measuring method |
| CN106227197A (en) * | 2016-08-31 | 2016-12-14 | 上海伟世通汽车电子系统有限公司 | The autocontrol method of automobile instrument artifical resistance input |
| CN106404127A (en) * | 2016-08-31 | 2017-02-15 | 芜湖天宇科技开发有限公司 | Fuel sensor resistance ratio detection bench and detection method thereof |
| CN107063400B (en) * | 2016-11-18 | 2019-04-16 | 安徽江淮汽车集团股份有限公司 | A kind of calibration system of automobile instrument and fuel tank |
| CN107063400A (en) * | 2016-11-18 | 2017-08-18 | 安徽江淮汽车集团股份有限公司 | A kind of calibration system of automobile instrument and fuel tank |
| CN106908115A (en) * | 2017-02-24 | 2017-06-30 | 北京中位科技有限公司 | Vehicle fuel tank fuel quantity scaling method and system |
| CN106908115B (en) * | 2017-02-24 | 2019-11-26 | 北京中位科技有限公司 | Vehicle fuel tank fuel quantity scaling method and system |
| CN108656951A (en) * | 2017-03-31 | 2018-10-16 | 华晨汽车集团控股有限公司 | A kind of control method of automobile fuel gauge |
| CN109579949A (en) * | 2017-09-28 | 2019-04-05 | 惠州市德赛西威汽车电子股份有限公司 | A method of judging that oil float subcard is stagnant |
| CN109084867A (en) * | 2018-07-11 | 2018-12-25 | 黑龙江天有为电子有限责任公司 | A kind of automobile combination meter fuel oil emulation test system and method |
| CN108917889A (en) * | 2018-07-26 | 2018-11-30 | 安徽江淮汽车集团股份有限公司 | A kind of fuel gauge test macro and method |
| CN110553703A (en) * | 2019-10-14 | 2019-12-10 | 广州创锐车用电器有限公司 | Calibration information generation method and system based on oil meter |
| CN110553703B (en) * | 2019-10-14 | 2021-04-23 | 广州创锐车用电器有限公司 | Calibration information generation method and system based on oil meter |
| CN110987130A (en) * | 2019-12-26 | 2020-04-10 | 安为机电设备制造(上海)有限公司 | Flowmeter detection system and detection method thereof |
| CN110987130B (en) * | 2019-12-26 | 2020-12-18 | 安为机电设备制造(上海)有限公司 | Flowmeter detection system and detection method thereof |
| CN112440740A (en) * | 2020-12-01 | 2021-03-05 | 东风越野车有限公司 | Vehicle power take-off system and power take-off and calibration method thereof |
| CN113532565A (en) * | 2021-06-03 | 2021-10-22 | 惠州市德赛西威汽车电子股份有限公司 | Automobile fuel tank fuel simulation test method and system |
| CN116499544A (en) * | 2023-06-30 | 2023-07-28 | 广东润宇传感器股份有限公司 | Storage tank volume calibration method, system, electronic equipment and storage medium |
| CN116499544B (en) * | 2023-06-30 | 2023-09-22 | 广东润宇传感器股份有限公司 | Storage tank volume calibration method, system, electronic equipment and storage medium |
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Application publication date: 20141008 Assignee: CHONGQING CHANGAN NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. Assignor: Chongqing Changan Automobile Co.,Ltd. Contract record no.: X2021500000014 Denomination of invention: Calibration method of automobile fuel gauge Granted publication date: 20170215 License type: Common License Record date: 20211014 |
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