CN110749453B - Method for detecting accelerator pedal - Google Patents
Method for detecting accelerator pedal Download PDFInfo
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- CN110749453B CN110749453B CN201910874988.7A CN201910874988A CN110749453B CN 110749453 B CN110749453 B CN 110749453B CN 201910874988 A CN201910874988 A CN 201910874988A CN 110749453 B CN110749453 B CN 110749453B
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- accelerator pedal
- opening degree
- pedal
- accelerator
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 230000003247 decreasing effect Effects 0.000 claims description 6
- 210000004556 brain Anatomy 0.000 claims description 3
- 238000012795 verification Methods 0.000 abstract description 4
- 238000007689 inspection Methods 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked 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
- B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
- B60K26/02—Arrangements or mounting of propulsion unit control devices in vehicles of initiating means or elements
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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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- Engineering & Computer Science (AREA)
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- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
The invention discloses a method for detecting an accelerator pedal, which comprises the steps of adding two paths of accelerator pedal signals to three paths of signals; the VCU receives actual voltage signals of three paths of accelerator pedals; the VCU judges the voltage range of the three signals; if the voltage range is detected to have no fault, the VCU converts a voltage value into a pedal opening according to the maximum value and the minimum value corresponding to each path of signal; checking the accelerator pedals pairwise; comparing the current opening degree of the accelerator pedal with the previous state to judge that the current opening degree is in the incremental direction, and if the current opening degree is different from the previous state, judging that the current opening degree is in the fault; summarizing all faults, and if two paths have problems, the opening degree of the accelerator pedal is the opening degree of the normal path; the system detection is carried out according to the voltage range, the pedal signal pair verification and the pedal variation, the accelerator pedal is detected, and the safety of the accelerator pedal is improved; the intention of the driver is ensured to the maximum extent by a multiple redundancy and detection strategy.
Description
Technical Field
The invention relates to the technical field of accelerator pedal detection, in particular to an accelerator pedal detection method.
Background
Nowadays, new energy sources are increasingly popularized, people pay more attention to the safety of automobiles, wherein an accelerator pedal is taken as a device for important performance of the intention of a driver, and the safety of the accelerator pedal is more worthy of attention. However, only two-way pedal inspection is considered in the current patent, however, two-way inspection can judge that the accelerator pedal has a fault when a certain way has a fault, so that the vehicle can only enter a Limp-home mode or drive according to the accelerator pedal with a small opening degree, but the driver cannot specifically identify which way has a fault, the intention of the driver cannot be reflected normally, and the driver experience is seriously influenced.
Disclosure of Invention
The method for detecting the accelerator pedal can detect which accelerator pedal signal fault can be detected, meanwhile, the accelerator pedal can be ensured to normally reflect the intention of a driver, meanwhile, the safety of the accelerator pedal is also improved, and the problems that when a certain path of the accelerator pedal is in fault, although the accelerator pedal can be judged to be in fault through two-path verification, the accelerator pedal can only enter a Limp-home mode or can only run according to the accelerator pedal with small opening degree, but the failure of the path cannot be specifically identified, the intention of the driver cannot be normally reflected, and the experience of the driver is seriously influenced are solved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for detecting an accelerator pedal specifically comprises the following steps:
s1, adding the two paths of accelerator pedal signals to three paths of signals;
s2, the VCU receives actual voltage signals of three paths of accelerator pedals;
s3, VCU will judge the voltage range of three-way signal, if it is larger than the corresponding maximum value or smaller than the corresponding minimum value, it will be considered that the signal is fault, and will not make the following judgment;
s4, if the voltage range is detected without faults, the VCU converts the voltage value into the pedal opening according to the maximum value and the minimum value corresponding to each path of signal, and the utilized formula is as follows:
acc_pct＝(Vact-Vmin)/(Vmax-Vmin)×100％；
s5, checking the accelerator pedals pairwise, if two of the two algorithms are not satisfied, considering the common pedal in the two equations to be a fault, and checking the accelerator pedals pairwise according to the following equations:
|acc1-acc2|<Thr
|acc1-acc3|<Thr
|acc2-acc3|<Thr；
s6, comparing the current opening degree of the accelerator pedal with the previous state to judge that the current opening degree of the accelerator pedal is in an increment direction, increasing the current opening degree of the accelerator pedal to + decreasing the current opening degree of the accelerator pedal to-and then mutually checking the increment direction, and if the current opening degree of the accelerator pedal is different from the previous opening degree of the accelerator pedal, judging that the current opening degree of the accelerator pedal is in the increment direction, increasing the current opening degree of the accelerator pedal to + decreasing the current opening degree of the accelerator pedal to-and then mutually checking the increment direction, and judging that the current opening degree of the accelerator pedal is in the increment direction;
and S7, summarizing all faults, wherein if no faults exist, the opening degree of the accelerator pedal is the average value of three opening degrees, if one path has problems, the opening degree of the accelerator pedal is the average value of two normal path opening degrees, if two paths have problems, the opening degree of the accelerator pedal is the opening degree of one normal path, and if both paths have problems, the opening degree of the accelerator pedal is the minimum opening degree of three pedals.
Preferably, the principle of the accelerator pedal detection method is that the accelerator pedal signal is a voltage value generated by an accelerator pedal sensor according to a pedal stroke; the VCU is a vehicle control unit, the VCU is a brain of the electric vehicle and is used for collecting, processing and making corresponding decisions of various signals, and the VCU mainly processes and judges the signals and determines the final opening degree of an accelerator pedal.
Compared with the prior art, the method for detecting the accelerator pedal provided by the invention comprises the following steps:
1. the invention adds two paths of accelerator pedal signals to three paths of signals; the system detection is carried out according to the voltage range, the pedal signal pair verification and the pedal variation, the accelerator pedal is detected, and the safety of the accelerator pedal is improved; the intention of a driver is ensured to the greatest extent through multiple redundancy and detection strategies;
the VCU judges the voltage ranges of the three signals, if the voltage ranges of the three signals are larger than the corresponding maximum value or smaller than the corresponding minimum value, the VCU considers the three signals as faults, and the voltage ranges of the three signals are judged to facilitate detection of the faults;
3. if no fault exists in the voltage range detection, the VCU converts the voltage value into the pedal opening according to the maximum value and the minimum value corresponding to each path of signal, and the pedal opening is conveniently detected;
4. checking the accelerator pedals pairwise, and if two of the accelerator pedals are not satisfied, considering the common pedal in the two formulas as a fault, so that the detection precision is improved;
5. the current opening degree of the accelerator pedal and the previous state are compared and judged to be the increment direction, the increment direction is increased to + reduced to-and then the increment directions are mutually verified, if the current opening degree of the accelerator pedal and the previous state are different from each other, the detection precision is further improved, and the safety of the accelerator pedal is improved;
6. all faults are collected, if no faults exist, the opening degree of an accelerator pedal is the average value of three opening degrees, if one way has a problem, the opening degree of the accelerator pedal is the average value of two normal way opening degrees, if two ways have a problem, the opening degree of the accelerator pedal is the opening degree of one way, if two ways have problems, the opening degree of the accelerator pedal is the opening degree of one way, and if the two ways have problems, the opening degree of the accelerator pedal is the minimum opening degree of the three pedals, so that the intention of a driver can be guaranteed to the maximum extent.
Drawings
FIG. 1 is a flow chart of a method of accelerator pedal detection of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following detailed description and the accompanying drawing 1 of the specification. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Examples
A method for detecting an accelerator pedal specifically comprises the following steps:
s1, adding the two paths of accelerator pedal signals to three paths of signals;
s2, the VCU receives actual voltage signals of three paths of accelerator pedals;
s3, VCU will judge the voltage range of three-way signal, if it is larger than the corresponding maximum value or smaller than the corresponding minimum value, it will be considered that the signal is fault, and will not make the following judgment;
s4, if the voltage range is detected without faults, the VCU converts the voltage value into the pedal opening according to the maximum value and the minimum value corresponding to each path of signal, and the utilized formula is as follows:
acc_pct＝(Vact-Vmin)/(Vmax-Vmin)×100％；
s5, checking the accelerator pedals pairwise, if two of the two algorithms are not satisfied, considering the common pedal in the two equations to be a fault, and checking the accelerator pedals pairwise according to the following equations:
|acc1-acc2|<Thr
|acc1-acc3|<Thr
|acc2-acc3|<Thr；
s6, comparing the current opening degree of the accelerator pedal with the previous state to judge that the current opening degree of the accelerator pedal is in an increment direction, increasing the current opening degree of the accelerator pedal to + decreasing the current opening degree of the accelerator pedal to-and then mutually checking the increment direction, and if the current opening degree of the accelerator pedal is different from the previous opening degree of the accelerator pedal, judging that the current opening degree of the accelerator pedal is in the increment direction, increasing the current opening degree of the accelerator pedal to + decreasing the current opening degree of the accelerator pedal to-and then mutually checking the increment direction, and judging that the current opening degree of the accelerator pedal is in the increment direction;
and S7, summarizing all faults, wherein if no faults exist, the opening degree of the accelerator pedal is the average value of three opening degrees, if one path has problems, the opening degree of the accelerator pedal is the average value of two normal path opening degrees, if two paths have problems, the opening degree of the accelerator pedal is the opening degree of one normal path, and if both paths have problems, the opening degree of the accelerator pedal is the minimum opening degree of three pedals.
Further, the principle of the accelerator pedal detection method is that an accelerator pedal signal is a voltage value generated by an accelerator pedal sensor according to a pedal stroke; the VCU is a vehicle control unit, the VCU is a brain of the electric vehicle and is used for collecting, processing and making corresponding decisions of various signals, and the VCU mainly processes and judges the signals and determines the final opening degree of an accelerator pedal.
In summary, the following steps: the invention adds two paths of accelerator pedal signals to three paths of signals; the system detection is carried out according to the voltage range, the pedal signal pair verification and the pedal variation, the accelerator pedal is detected, and the safety of the accelerator pedal is improved; the intention of a driver is ensured to the greatest extent through multiple redundancy and detection strategies;
the VCU judges the voltage ranges of the three signals, if the voltage ranges of the three signals are larger than the corresponding maximum value or smaller than the corresponding minimum value, the VCU is considered to be a fault, and the voltage ranges of the three signals are judged, so that the fault can be conveniently detected;
if no fault exists in the voltage range detection, the VCU converts the voltage value into the pedal opening according to the maximum value and the minimum value corresponding to each path of signal, and the pedal opening is conveniently detected;
checking the accelerator pedals pairwise, and if two of the accelerator pedals are not satisfied, considering the common pedal in the two formulas as a fault, so that the detection precision is improved;
the current opening degree of the accelerator pedal and the previous state are compared and judged to be the increment direction, the increment direction is increased to + reduced to-and then the increment directions are mutually verified, if the current opening degree of the accelerator pedal and the previous state are different from each other, the detection precision is further improved, and the safety of the accelerator pedal is improved;
all faults are collected, if no faults exist, the opening degree of an accelerator pedal is the average value of three opening degrees, if one way has a problem, the opening degree of the accelerator pedal is the average value of two normal way opening degrees, if two ways have a problem, the opening degree of the accelerator pedal is the opening degree of one way, if two ways have problems, the opening degree of the accelerator pedal is the opening degree of one way, and if the two ways have problems, the opening degree of the accelerator pedal is the minimum opening degree of the three pedals, so that the intention of a driver can be guaranteed to the maximum extent.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (2)
1. A method for detecting an accelerator pedal is characterized by comprising the following steps:
s1, adding the two paths of accelerator pedal signals to three paths of signals;
s2, the VCU receives actual voltage signals of three paths of accelerator pedals;
s3, VCU will judge the voltage range of three-way signal, if it is larger than the corresponding maximum value or smaller than the corresponding minimum value, it will be considered that the signal is fault, and will not make the following judgment;
s4, if the voltage range is detected without faults, the VCU converts the voltage value into the pedal opening according to the maximum value and the minimum value corresponding to each path of signal, and the utilized formula is as follows:
acc_pct＝(Vact-Vmin)/(Vmax-Vmin)×100％；
s5, checking the accelerator pedals pairwise, if two of the two algorithms are not satisfied, considering the common pedal in the two equations to be a fault, and checking the accelerator pedals pairwise according to the following equations:
|acc1-acc2|<Thr
|acc1-acc3|<Thr
|acc2-acc3|<Thr；
s6, comparing the current opening degree of the accelerator pedal with the previous state to judge that the current opening degree of the accelerator pedal is in an increment direction, increasing the current opening degree of the accelerator pedal to + decreasing the current opening degree of the accelerator pedal to-and then mutually checking the increment direction, and if the current opening degree of the accelerator pedal is different from the previous opening degree of the accelerator pedal, judging that the current opening degree of the accelerator pedal is in the increment direction, increasing the current opening degree of the accelerator pedal to + decreasing the current opening degree of the accelerator pedal to-and then mutually checking the increment direction, and judging that the current opening degree of the accelerator pedal is in the increment direction;
and S7, summarizing all faults, wherein if no faults exist, the opening degree of the accelerator pedal is the average value of three opening degrees, if one path has problems, the opening degree of the accelerator pedal is the average value of two normal path opening degrees, if two paths have problems, the opening degree of the accelerator pedal is the opening degree of one normal path, and if both paths have problems, the opening degree of the accelerator pedal is the minimum opening degree of three pedals.
2. The method of claim 1, wherein the principle of the accelerator pedal detection method is that an accelerator pedal signal is a voltage value generated by an accelerator pedal sensor according to a pedal stroke; the VCU is a vehicle control unit, the VCU is a brain of the electric vehicle and is used for collecting, processing and making corresponding decisions of various signals, and the VCU mainly processes and judges the signals and determines the final opening degree of an accelerator pedal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910874988.7A CN110749453B (en) | 2019-09-19 | 2019-09-19 | Method for detecting accelerator pedal |
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| CN201910874988.7A CN110749453B (en) | 2019-09-19 | 2019-09-19 | Method for detecting accelerator pedal |
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| CN110749453B true CN110749453B (en) | 2021-09-24 |
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| CN112109648B (en) * | 2020-09-30 | 2022-04-22 | 北京车和家信息技术有限公司 | Method for detecting clamping stagnation of accelerator pedal and vehicle control unit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19958248A1 (en) * | 1998-12-09 | 2000-07-06 | Suzuki Motor Co | Choke flap controller starts a fuel cut-off for the engine at lower speed than defined cut-off speed if failure of dual detection device is detected |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102007016618B4 (en) * | 2006-04-07 | 2017-07-13 | Fuji Jukogyo K.K. | Driving force control unit for a vehicle |
| CN105857073B (en) * | 2016-05-11 | 2018-10-23 | 郑州宇通客车股份有限公司 | A kind of gas pedal and accelerator pedal signal control method |
| CN106364365B (en) * | 2016-09-12 | 2018-10-16 | 北京新能源汽车股份有限公司 | Method and device for processing double-path accelerator pedal signals |
| CN207488776U (en) * | 2017-10-27 | 2018-06-12 | 宝沃汽车（中国）有限公司 | Pedal position detection device, pedal position sensor and vehicle |
| CN109164312B (en) * | 2018-07-25 | 2021-07-16 | 江苏敏安电动汽车有限公司 | Electric automobile accelerator pedal checking algorithm |
| CN108944440B (en) * | 2018-07-27 | 2020-09-01 | 北京新能源汽车股份有限公司 | Control method and device of accelerator pedal, vehicle and computing equipment |
| CN109334448B (en) * | 2018-09-29 | 2020-07-28 | 潍柴动力股份有限公司 | Accelerator pedal opening degree adjusting method and system |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19958248A1 (en) * | 1998-12-09 | 2000-07-06 | Suzuki Motor Co | Choke flap controller starts a fuel cut-off for the engine at lower speed than defined cut-off speed if failure of dual detection device is detected |
Non-Patent Citations (1)
| Title |
|---|
| 履带车辆HMCVT测试技术研究及应用;程广伟;《中国博士学位论文全文数据库 工程科技Ⅱ辑》;20081215;1-2 * |
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