CN101660934B - Method for controlling fuel meter - Google Patents
Method for controlling fuel meter Download PDFInfo
- Publication number
- CN101660934B CN101660934B CN2009101772198A CN200910177219A CN101660934B CN 101660934 B CN101660934 B CN 101660934B CN 2009101772198 A CN2009101772198 A CN 2009101772198A CN 200910177219 A CN200910177219 A CN 200910177219A CN 101660934 B CN101660934 B CN 101660934B
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- Prior art keywords
- fuel
- pointer
- gauge pointer
- control method
- oil
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- 239000000446 fuel Substances 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000000295 fuel oil Substances 0.000 claims description 30
- 230000005611 electricity Effects 0.000 claims description 23
- 239000003921 oil Substances 0.000 claims description 12
- 230000005662 electromechanics Effects 0.000 claims description 4
- 230000002045 lasting effect Effects 0.000 claims description 3
- 239000002828 fuel tank Substances 0.000 abstract description 3
- 238000011217 control strategy Methods 0.000 abstract description 2
- 238000013016 damping Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The invention discloses a method for controlling a fuel meter, comprising the following steps: inputting resistance value signals to a meter by a fuel sensor; and driving a stepper motor to lead the indicator to reach a corresponding indicating position by a meter processor according to the resistance value signals. The invention can reflect fuel level in a fuel tank accurately and timely through a fuel meter control strategy based on no change of existing sensors and meter hardware, and solves the problems such as indicator jitter of the fuel meter, warning light flicker, fuel meter distortion and the like caused by uneven road.
Description
Technical field
The invention belongs to automotive electronics combination instrument field, particularly relate to a kind of fuel gauge control method.
Background technology
At present, the vehicle fuel table is to adopt fuel sensor to realize the indication of oil mass by resistance signal; But in the vehicle ' process, because vehicle is in a dynamic process, what will cause pasta in the fuel tank like this rocks the special shake up and down that can cause the fuel gauge pointer in the hill path of jolting; When critical alarm set point, also can cause the fuel oil alarm lamp do not stop the flicker.
Summary of the invention
The present invention reaches the oil level of accurate, in good time reaction fuel tank by the fuel gauge control strategy on the basis that does not change existing sensor, instrument hardware, and the fuel gauge pointer shake that causes owing to road bump, problems such as alarm lamp flicker, fuel gauge distortion have been solved.
The present invention specifically discloses a kind of fuel gauge control method, and fuel sensor is input to instrument with the resistance signal, and according to this resistance signal, drive stepping motor makes pointer arrive corresponding indicating positions by the instrument processor.
Under the situation that the accumulator electricity disconnects and generating electromechanics disconnects, the fuel gauge pointer is parked in current location;
Under accumulator electricity closure and the dynamo-electric situation about disconnecting of generating, the fuel gauge pointer returns zero-bit;
Under the situation that the accumulator electricity disconnects and generating electromechanics is closed, fuel gauge pointer operate as normal;
Under accumulator electricity closure and the dynamo-electric closed kind situation of generating, fuel gauge pointer operate as normal.
Further, when ignition switch is under the closed situation, the fuel gauge pointer finishes back 2-3 in the warning self check of fuel oil position and indicates second and to put in place.
Further, disconnect and generate electricity dynamo-electric closure in this case at accumulator electricity, the fuel gauge pointer moved to the time of target location less than 20 seconds from current location.
Further, the motion that the fuel oil pointer moves to the target location from current location motion when waiting is accelerated motion in its 1/3 time of mid-early stage, and movement travel is 1/2, and 2/3 time of later stage is retarded motion, and movement travel is 1/2.
Further, closed and generate electricity dynamo-electric closure in this case at accumulator electricity, the fuel gauge pointer is 60-90 minute from the run duration that empty oil level (E) moves to full oil level (F), and the fuel oil pointer is movement at the uniform velocity.
Further, when instrument does not receive the signal of fuel sensor (3), continue that gauge pointer refers to get back to zero-bit after 20 seconds, and report to the police and take place.
Further, when the fuel oil signal is imported over the ground, continue that gauge pointer refers to get back to zero point after 20 seconds, and report to the police and take place.After the input of fuel oil signal recovered normal lasting 20 seconds, the fuel gauge pointer referred to get back to original position.
Further, when the oil tank fuel amount is lower than a certain amount ofly, the fuel sensor output resistance is during greater than fuel oil alarm set point resistance, and the fuel oil alarm lamp on the instrument lights.
Whether further, increase a threshold value on the basis of critical amount of fuel decides alarm lamp should extinguish or light by extinguishing to become by lighting to become.
Description of drawings
Fig. 1: fuel sensor position view.
Description of reference numerals:
The 1-band; The 2-wire harness; The 3-fuel sensor; 4-float lever assembly;
Embodiment
Below in conjunction with accompanying drawing the present invention is carried out concrete description.
Embodiment mainly is by the pin pin resistance signal to be inputed to instrument by fuel sensor, is realized by the software and hardware of instrument processor MCU (single-chip microcomputer).Instrument MCU is according to this resistance signal, and drive stepping motor makes pointer arrive the position of corresponding indication; MCU carries out following processing according to the speed of a motor vehicle, ignition key position, power supply type signal to fuel gauge:
One, fuel oil hand motion
In this case, the fuel gauge pointer is parked in current location when the accumulator electricity disconnects and generate electricity dynamo-electric closure;
In this case, the fuel gauge pointer returns zero-bit when accumulator electricity closure and the dynamo-electric disconnection of generating;
When accumulator electricity disconnect and generating dynamo-electric when closed in this case, fuel gauge pointer operate as normal;
When accumulator electricity closed and generating dynamo-electric when closed in this case, fuel gauge pointer operate as normal.
Be in as ignition switch Ign under the situation of closure, combination instrument fuel gauge pointer finishes rapid indication back 2-3 second in the warning self check of fuel oil position and puts in place;
Accumulator electricity disconnect and during generating dynamo-electric closed (vehicle velocity V=0) in this case, the fuel oil resistance changes, the fuel gauge pointer moves to the target location from current location, the hand motion time was controlled in 20 seconds, but combination instrument fuel oil pointer moves when current location moves to the target location hand motion for grade; In the hand motion process, be accelerated motion in 1/3 time of early stage, movement travel is 1/2, and 2/3 time of later stage is retarded motion, and movement travel is 1/2.
When and generating dynamo-electric closed (vehicle velocity V＞0) closed when accumulator electricity in this case, the fuel oil resistance changes, the fuel gauge pointer moves to the F position, and (E, F position are the positions of float from the E position, how the words is described good), the hand motion time was controlled in 60-90 minute, but combination instrument fuel oil pointer is movement at the uniform velocity, and the fuel oil hand motion is lighted synchronous to warning groove and fuel oil bell character.The damping of instrument realizes by software, can programme to it and is provided with according to automotive performance and customer requirements.Under general working condition, in order to make the level and smooth rotation of pointer, instrument should have suitable damping and very little step angle, and recommending the stepper motor step angle is 1/12 °.
Two, the fuel oil Signal Fail is handled
When unsettled or instrument does not receive the signal of fuel sensor 3 when wire harness 2, continue that gauge pointer refers to get back to zero-bit after 20 seconds, and report to the police and take place; When wire harness 2 connects or instrument when receiving signal again again, continue that gauge pointer refers to go back to original position after 20 seconds;
When the fuel oil signal is imported over the ground, continue that gauge pointer refers to get back to zero point after 20 seconds, and report to the police and take place; After the input of fuel oil signal recovered normal lasting 20 seconds, the fuel gauge pointer referred to get back to original position.
Three, low report to the police (LFW) in fuel oil position
When the oil tank fuel amount is lower than when a certain amount of, the fuel sensor output resistance is during greater than fuel oil alarm set point resistance, and the fuel oil alarm lamp on the instrument need light.
After refueling again, the fuel sensor output resistance is during less than the alarm set point resistance, and the fuel oil pilot lamp on the instrument need extinguish.
Suddenly light during near critical value or extinguish for fear of amount of fuel, can consider on the basis of critical amount of fuel, to increase a threshold value and decide whether should extinguishing or light of alarm lamp by lighting to become by extinguishing to become.
The function of following explanation of tables LFW.
| Previous LFW | Current TND (current oil mass) reading | Current LFW |
| OFF | TND＜=LFW threshold value | ON |
| ON | TND＜LFW threshold value+hysteresis | ON |
| ON | TND＞=LFW threshold value+hysteresis | OFF |
| OFF | TND＞LFW threshold value | OFF |
After ignition switch was opened, instrument need detect 3 seconds kinds of low oil level alarm lamp, and the low oil level alarm lamp will be lighted.
Claims (9)
1. fuel gauge control method, it is characterized in that: fuel sensor is input to instrument with the resistance signal, and according to this resistance signal and the speed of a motor vehicle, ignition key position, power supply type signal, drive stepping motor makes pointer arrive corresponding indicating positions by the instrument processor, wherein
Under the situation that the accumulator electricity disconnects and generating electromechanics disconnects, the fuel gauge pointer is parked in current location;
Under accumulator electricity closure and the dynamo-electric situation about disconnecting of generating, the fuel gauge pointer returns zero-bit;
Under the situation that the accumulator electricity disconnects and generating electromechanics is closed, fuel gauge pointer operate as normal;
Under accumulator electricity closure and the dynamo-electric closed kind situation of generating, fuel gauge pointer operate as normal;
The motion that the fuel oil pointer moves to the target location from current location motion when waiting is accelerated motion in its 1/3 time of mid-early stage, movement travel is 1/2, and 2/3 time of later stage is retarded motion, and movement travel is 1/2.
2. control method according to claim 1 is characterized in that: when ignition switch is under the closed situation, the fuel gauge pointer finishes back 2-3 in the warning self check of fuel oil position and indicates second and to put in place.
3. control method according to claim 1 and 2 is characterized in that: disconnect and generate electricity dynamo-electric closure in this case at accumulator electricity, the fuel gauge pointer moved to the time of target location less than 20 seconds from current location.
4. control method according to claim 1 and 2, it is characterized in that: closed and generate electricity dynamo-electric closure in this case at accumulator electricity, the fuel gauge pointer is 60-90 minute from the run duration that empty oil level (E) moves to full oil level (F), and the fuel oil pointer is movement at the uniform velocity.
5. control method according to claim 1 and 2 is characterized in that: when instrument does not receive the signal of fuel sensor (3), continue that gauge pointer refers to get back to zero-bit after 20 seconds, and report to the police and take place.
6. control method according to claim 1 and 2 is characterized in that: when the fuel oil signal is imported over the ground, continue that gauge pointer refers to get back to zero point after 20 seconds, and report to the police and take place.
7. control method according to claim 6 is characterized in that: after the input of fuel oil signal recovered normal lasting 20 seconds, the fuel gauge pointer referred to get back to original position.
8. according to claim 1,2,7 each described control methods, it is characterized in that: when the oil tank fuel amount is lower than a certain amount ofly, the fuel sensor output resistance is during greater than fuel oil alarm set point resistance, and the fuel oil alarm lamp on the instrument lights.
9. whether control method according to claim 8 is characterized in that: increase a threshold value and decide alarm lamp should extinguish or light by extinguishing to become by lighting to become on the basis of critical amount of fuel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101772198A CN101660934B (en) | 2009-09-27 | 2009-09-27 | Method for controlling fuel meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101772198A CN101660934B (en) | 2009-09-27 | 2009-09-27 | Method for controlling fuel meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101660934A CN101660934A (en) | 2010-03-03 |
| CN101660934B true CN101660934B (en) | 2011-02-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101772198A Active CN101660934B (en) | 2009-09-27 | 2009-09-27 | Method for controlling fuel meter |
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| Country | Link |
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| CN (1) | CN101660934B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871804B (en) * | 2010-06-13 | 2012-07-11 | 奇瑞汽车股份有限公司 | Method and device for displaying fuel quantity |
| CN102359803A (en) * | 2011-09-22 | 2012-02-22 | 安徽江淮汽车股份有限公司 | Indication control method of automobile fuel gauge |
| CN102879051A (en) * | 2012-08-02 | 2013-01-16 | 长春启利电子科技有限公司 | Vehicle instrument fuel alarm fluctuation processing method |
| CN103335689B (en) * | 2013-06-08 | 2016-05-11 | 三一汽车制造有限公司 | A kind of liquid level abnormality judgment method and device |
| CN106248178A (en) * | 2016-08-30 | 2016-12-21 | 重庆万力联兴实业(集团)有限公司 | Automobile fuel pump oil level electric resistance sensor detection device |
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2009
- 2009-09-27 CN CN2009101772198A patent/CN101660934B/en active Active
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| Publication number | Publication date |
|---|---|
| CN101660934A (en) | 2010-03-03 |
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