KR20140133729A - Method for determining operating location of brake pedal - Google Patents
Method for determining operating location of brake pedal Download PDFInfo
- Publication number
- KR20140133729A KR20140133729A KR1020130053245A KR20130053245A KR20140133729A KR 20140133729 A KR20140133729 A KR 20140133729A KR 1020130053245 A KR1020130053245 A KR 1020130053245A KR 20130053245 A KR20130053245 A KR 20130053245A KR 20140133729 A KR20140133729 A KR 20140133729A
- Authority
- KR
- South Korea
- Prior art keywords
- brake pedal
- signal
- operated
- learning value
- calculating
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/06—Disposition of pedal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/171—Detecting parameters used in the regulation; Measuring values used in the regulation
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
- G05G1/30—Controlling members actuated by foot
- G05G1/38—Controlling members actuated by foot comprising means to continuously detect pedal position
Abstract
The present invention relates to a method for determining a position at which a brake pedal is operated from a signal detected by a brake pedal sensor in each electronic control module provided with a throttle control unit and a lamp control unit, A signal processing step of performing signal processing so as to be able to be operated in each of the electronic control modules; A confirming step of confirming whether a signal-processed signal through the processing step satisfies a condition for calculating a learning value; And if it is confirmed that the signal processed through the processing step in the checking step satisfies the condition for calculating the learning value, the learning value is calculated, and the brake pedal together with the signal- And an arithmetic step of calculating a position to be operated.
Description
The present invention relates to a method for determining an operating position of a brake pedal, and more particularly, to a method for determining the operating position of a brake pedal from a signal detected by a brake pedal sensor in each electronic control module provided in a throttle control unit and a lamp control unit And more particularly, to a method of determining an operating position of a brake pedal.
Generally, when the user presses the brake pedal, the signal detected through the brake pedal sensor is used in two cases as follows.
The first one is used in an electronic control module provided in the throttle control unit to control the operation of an electronic accelerator system (ETC system) or a cruise system. Secondly, And is used in an electronic control module provided in the lamp control unit for flashing a warning light for informing the user of the lamp.
The signal detected through the brake pedal sensor thus used is signal-processed first by one vehicle body control module (BCM) and then transmitted to the electronic control module provided in the throttle control unit via the can communication, (Sometimes referred to as a "single BASS"), but it can be transferred to each electronic control module without going through the body control module, and signal processing (sometimes called "dual BASS") in each electronic control module .
However, unlike the case of the single BASS, in the case of the dual BASS, the learning value is calculated as the learning value of how much the user depresses the brake pedal when the brake pedal is completely released, Since the brake pedal sensor does not consider the inherent noise of the brake pedal sensor or the holding time necessary for securing stability against the brake operation in calculating the learning value, The position at which the brake pedal is operated can not be accurately determined from the detected signal.
That is, the method of determining the operating position of the brake pedal, which can more accurately determine the position at which the brake pedal is operated from the signal detected by the brake pedal sensor in each of the electronic control modules provided in the throttle control unit and the lamp control unit, It is not.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a brake pedal that can accurately determine the position at which a brake pedal is operated from a signal detected by a brake pedal sensor in each of electronic control modules provided in a throttle control unit and a lamp control unit And to provide a method for determining an operating position.
The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to at least partially solve the problems in the conventional arts. It can be understood.
As a means for solving the above problems, a method for determining an operating position of a brake pedal according to the present invention is characterized in that, in each of electronic control modules provided with a throttle control unit and a lamp control unit, a brake pedal is actuated from a signal detected by a brake pedal sensor A signal processing step of processing a signal detected by the brake pedal sensor so as to be calculated by the respective electronic control modules; A confirming step of confirming whether a signal-processed signal through the processing step satisfies a condition for calculating a learning value; And if it is confirmed that the signal processed through the processing step in the checking step satisfies the condition for calculating the learning value, the learning value is calculated, and the brake pedal together with the signal- And an arithmetic step of computing a position to be operated.
Here, the checking step may include determining whether the brake pedal is operated within a predetermined range, whether the brake pedal is operated within a range in which the brake pedal does not deviate from a predetermined deviation by more than a predetermined time, Or whether or not it has been operated within a range capable of detecting the learning value as a condition for calculating the learning value.
At this time, whether or not the brake pedal operates within a predetermined range may include: receiving a signal-processed signal through the processing step; Determining whether the intensity of the received signal is between a maximum intensity and a minimum intensity of a signal detectable through the brake pedal sensor; And determining that the brake pedal is operating within a predetermined range if the received signal strength is between the maximum intensity and the minimum intensity.
In addition, whether or not the brake pedal operates within a range not deviating from a predetermined deviation by more than a predetermined time may include: receiving a signal-processed signal through the processing step; Determining whether the strength of the received signal is less than a tolerable noise intensity of a signal detectable through the brake pedal sensor; If the strength of the received signal is less than the noise intensity, activating a timer; And determining that the brake pedal is operating within a range that does not deviate from a predetermined deviation by more than a predetermined time when the timer operates for a predetermined time or more.
Further, whether or not the brake pedal has operated within a range in which the brake pedal sensor can detect a signal includes: receiving a signal-processed signal through the processing step; Determining whether the intensity of the received signal is greater than a threshold intensity that can determine whether the brake pedal is operating through the brake pedal sensor; If the strength of the received signal is greater than the threshold strength, activating a timer; And determining that the brake pedal is operating within a range in which the brake pedal sensor can detect a signal when the timer operates for a predetermined time or more.
At this time, whether or not the brake pedal has operated within a range in which the brake pedal sensor can detect a signal is determined by determining whether the intensity of another signal received subsequent to the received signal that is determined to be greater than the threshold intensity is greater than the threshold intensity The process of confirmation; And returning to the step of receiving the signal processed through the processing step if the strength of the other signal is greater than the threshold strength.
The calculating step calculates a position of the brake pedal when the brake pedal is stepped on the basis of the position where the brake pedal is completely released from the signal processed through the processing step, By adjusting the ratio through the learning value, the position at which the brake pedal is operated can be calculated.
In the calculating step, if the learning value is not calculated because the condition for calculating the learning value is not satisfied in the confirming step, the ratio is adjusted through the previously stored previous learning value so that the brake pedal operates Can be calculated.
According to the method for determining the operating position of the brake pedal according to the present invention, the brake pedal is operated from the signal detected by the brake pedal sensor in each of the electronic control modules provided in the throttle control unit and the lamp control unit The position where the brake pedal is operated can be more accurately judged in consideration of the inherent noise of the brake pedal sensor and the holding time necessary for securing stability against the brake operation.
1 is a flowchart showing an embodiment of a method for determining an operating position of a brake pedal according to the present invention.
FIG. 2 and FIG. 4 are flowcharts illustrating the steps performed in the checking step in the method of determining the operating position of the brake pedal according to the present invention.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.
1 to 4, an embodiment of a method for determining the operating position of the brake pedal according to the present invention may include a processing step S100, an identifying step S200, and an calculating step S300. have.
2 and 4 are views for explaining a method of determining an operating position of a brake pedal according to an embodiment of the present invention. FIG. 1 is a flow chart showing an embodiment of a method for determining an operating position of a brake pedal according to the present invention. FIG. 4 is a flowchart illustrating a process performed in the step of FIG.
First, the processing step (S100) will be described in detail. In the processing step (S100), signals detected by the brake pedal sensor are subjected to signal processing so that they can be calculated by the respective electronic control modules.
At this time, the type of the signal detected by the brake pedal sensor is not limited. That is, either a current or a voltage may be used, and it may be an analog signal or a digital signal.
Since the types of signals may vary, signal processing is performed so that each electronic control module can be operated through the processing step S100.
For example, in the processing step S100, when the signal detected by the brake pedal sensor is an analog signal, it is converted into a digital signal through an AD converter, or a part of an unnecessary signal And the like.
Meanwhile, the confirming step S200 is a step of confirming whether the signal-processed signal through the processing step S100 satisfies the condition for calculating the learning value.
Here, the learning value is a value necessary for adaptation of the result of the arithmetic operation so that an error does not occur when calculating the position at which the brake pedal is operated in an operation step (S300) to be described later, Is calculated from the processed signal.
Since the learning value needs to be calculated more precisely in terms of adjusting the result of the calculation, the checking step S200 is performed in consideration of the inherent noise of the brake pedal sensor, the holding time required for securing stability against brake operation, Condition is satisfied or not.
First, the confirmation step S200 can confirm whether or not the brake pedal operates within a predetermined range.
Here, whether or not the brake pedal operates within a predetermined range can be confirmed in three steps as shown in FIG. 2 in detail (S210).
First, a process of receiving a signal-processed signal through the process step S100 is performed (S211). At this time, the following process may be directly received from the electronic control module, and the following process may be performed in a separate unit.
Thereafter, the process of determining whether the intensity of the received signal is between the maximum intensity and the minimum intensity of the signal that can be detected through the brake pedal sensor (S212) is performed. In this case, if the maximum intensity of the signal detectable by the brake pedal sensor is the intensity of the signal detected by the brake pedal sensor when the driver steps on the brake pedal, the minimum intensity of the signal detectable through the brake pedal sensor is It will be the strength of the signal detected by the brake pedal sensor when the brake pedal is fully released.
If it is determined in step S212 that the intensity of the received signal does not fall within the range between the maximum intensity and the minimum intensity of the signal that can be detected through the brake pedal sensor, the signal reception process S211 is repeated. If the signal reception process S211 is repeated as described above, the learning value may not be used in the calculation step S300. In this case, a previously stored previous learning value may be used as described later.
If it is determined in step S212 that the intensity of the received signal is between the maximum intensity and the minimum intensity of the signal that can be detected by the brake pedal sensor, then in step S200, the brake pedal is pre- And determines that the condition for calculating the learning value is satisfied (S213).
If it is determined in step S200 that the brake pedal is operated within a predetermined range, it is determined as a condition for calculating a learning value, It is possible to prevent learning of meaningless values because the reference when judging the operating position of the brake pedal is not properly set.
Second, the confirmation step S200 can confirm whether the brake pedal operates within a range that does not deviate from a predetermined deviation for a predetermined time or longer.
Whether or not the brake pedal is operated within a range that does not deviate from a predetermined deviation for a predetermined time or longer can be confirmed through five steps as shown in FIG. 3 in detail (S220).
First, a process of receiving a signal-processed signal through a process step S100 is performed (S221). At this time, the following process can be directly received from the electronic control module, and the following process can be performed by receiving the signal from a separate unit.
Thereafter, the process proceeds to step S222 where it is determined whether the intensity of the received signal is smaller than the allowable noise intensity of the signal that can be detected through the brake pedal sensor. At this time, a range in which the received signal intensity is stable can be determined through a process (S221) of receiving a noise intensity signal that a signal capable of being detected by the brake pedal sensor is acceptable The present invention is not limited to this, and it may be said to include all signals irrelevant to the brake pedal sensor generated during the transmission and reception of signals.
If it is confirmed that the intensity of the received signal is not less than the allowable noise intensity in the confirming process (S222), the signal receiving process (S221) is repeated again. At this time, if the signal reception process (S221) is repeated, the learning value may not be used in the calculation step (S300). In this case, as described later, the previously stored previous learning value can be used as described above.
On the other hand, if it is confirmed in step S222 that the intensity of the received signal is smaller than the allowable noise intensity, the process of step S223 is performed.
Then, it is checked whether the time when the timer has been operated is longer than a predetermined time (S224). If the predetermined time has not elapsed, the signal receiving process (S221) is repeated again. At this time, if the signal reception process (S221) is repeated, if the learning value can not be used in the calculation step (S300), a previously stored previous learning value may be used.
On the other hand, if the timer has been operated for a predetermined time or more, it is determined in step S200 that the brake pedal is operated within a predetermined time interval for a predetermined period of time and that the condition for calculating the learning value is satisfied (S225).
As described above, whether or not the brake pedal operates within a range in which the brake pedal does not deviate from the predetermined deviation in the confirmation step (S200) is determined as a condition for calculating the learning value, so that the signal is set to a value larger than the allowable noise It can be prevented that the signal is not constant due to the noise even though the brake pedal is completely released and learning is not performed and is not adjusted in the calculation step S300.
Third, the confirmation step S200 can check whether the brake pedal has operated within a range in which the brake pedal sensor can detect the signal.
Here, whether or not the brake pedal has operated within a range in which the brake pedal sensor can detect a signal can be identified in six steps as shown in FIG. 4 in detail (S230).
First, a process of receiving a signal-processed signal through the process step S100 is performed (S231). At this time, the following process can be directly received from the electronic control module, and the following process can be performed by receiving the signal from a separate unit.
Thereafter, the process proceeds to step S232 in which it is determined whether the intensity of the received signal is greater than a threshold strength for confirming whether the brake pedal is operating through the brake pedal sensor. At this time, the threshold strength that can be used to check whether the brake pedal is actuated through the brake pedal sensor means the minimum strength that the brake pedal sensor can recognize that the brake pedal is actuated.
If it is determined in step S232 that the intensity of the received signal is not greater than the threshold strength for confirming whether the brake pedal is operated through the brake pedal sensor, the signal receiving process S231 is repeated again. At this time, if the signal reception process (S231) is repeated, the learning value may not be used in the calculation step (S300). In this case, as described later, a previously stored previous learning value can be used as described later.
On the other hand, if it is determined in step S232 that the received signal strength is greater than the threshold strength for confirming whether or not the brake pedal is being operated through the brake pedal sensor, a step S234 of operating the timer proceeds do.
At this time, between the confirmation process (S232) and the timer operation (S234), a process of confirming whether the intensity of another received signal is greater than the threshold intensity is confirmed (S233) .
As a result, if it is ascertained that the strength of another signal received subsequent to the received signal that is greater than the threshold strength is greater than the threshold strength, then the brake pedal is reported to be not operating within the range that the brake pedal sensor can detect the signal The signal reception process (S231) will be repeated. In this case, it is a matter of course that the learning value may not be used in the calculation step S300 if the signal reception step S231 is repeated, and it is needless to say that the previously learned learning value stored beforehand can be used as described later.
If the predetermined time has not elapsed after the timer has been operated (S234) after proceeding to step S233, the brake pedal sensor determines that the brake pedal sensor is not operated within the time period for detecting the signal, The signal reception process (S231) will be repeated. At this time, the detailed explanation that the previously stored previous learning value can be used will not be described any further.
On the other hand, if it is determined that the timer has elapsed (S234), it is determined that the brake pedal has operated within a time period in which the brake pedal sensor can detect the signal, and the condition for calculating the learning value is satisfied (S236).
In this way, in the confirmation step S200, whether or not the brake pedal has operated within a range in which the brake pedal sensor can detect the signal is determined as a condition for calculating the learning value. Thus, even if the brake pedal is stepped on to some extent or more, Can be prevented from being recognized as being applied, and the time interval for adjusting the learning value can be determined in the calculation step S300.
As described above, in order to confirm whether or not the condition for calculating the learning value is satisfied in the confirmation step (S200), it is most advantageous to confirm whether or not all of the above three conditions are satisfied. However, It may be checked whether the condition is satisfied or not, and it is natural that it is also within the scope of the present invention to add or replace other conditions.
The processes for confirming whether or not the condition for calculating the learning value in the confirming step S200 as described in detail with reference to Figs. 2 to 4 are satisfied are exemplary, and thus the scope of the right is not limited to be.
Meanwhile, if it is confirmed that the signal processed through the processing step S100 in the confirming step S200 satisfies the condition for calculating the learning value, the calculating step S300 calculates the learning value, And the position at which the brake pedal is operated together with the signal-processed signal.
The calculation step S300 calculates a ratio of the position where the brake pedal is stepped on the basis of the position when the brake pedal is fully released from the signal-processed signal through the processing step SlOO as a ratio, By adjusting the ratio through the learning value, the position at which the brake pedal is operated can be calculated.
However, as described above, when the learning value is not calculated because the condition for calculating the learning value is not satisfied in the confirmation step (S200), for example, when the intensity of the received signal can be detected through the brake pedal sensor It is possible to calculate the position at which the brake pedal is operated by adjusting the ratio using the previously stored previous learning value if the learning value can not be calculated by repeating the case where the maximum value or the minimum value is not satisfied.
According to one embodiment of the method for determining the operating position of the brake pedal according to the present invention including the processing step S100, the confirming step S200, and the calculating step S300 as described above, the throttle control unit and the lamp control unit The position where the brake pedal is operated is determined in consideration of the inherent noise of the brake pedal sensor and the holding time necessary for securing stability against the brake operation in order to grasp the position where the brake pedal is operated in each of the provided electronic control modules It can be judged more accurately.
Although specific embodiments of the invention have been described and illustrated above, it is to be understood that the invention is not to be limited to the disclosed embodiment, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention, It is self-evident to those who have it. Accordingly, such modifications or variations should not be individually understood from the technical spirit and viewpoint of the present invention, and modified or modified embodiments should be included in the claims of the present invention.
Claims (8)
A signal processing step of processing signals detected by the brake pedal sensor so as to be calculated by the respective electronic control modules;
A confirming step of confirming whether a signal-processed signal through the processing step satisfies a condition for calculating a learning value; And
If it is confirmed that the signal processed through the processing step satisfies the condition for calculating the learning value in the checking step, the learning value is calculated and the brake pedal is operated together with the signal processed through the processing step And a calculation step of calculating a position to be obtained,
How to determine the operating position of the brake pedal.
Wherein,
Whether or not the brake pedal operates within a predetermined range, whether the brake pedal operates within a range not deviating from a predetermined deviation by more than a predetermined time, whether the brake pedal is operated within a range in which the brake pedal sensor can detect a signal Or whether or not at least one of the plurality of learning values has been operated as a condition for calculating the learning value.
How to determine the operating position of the brake pedal.
Whether or not the brake pedal is operated within a predetermined range,
Receiving a signal-processed signal through the processing step;
Determining whether the intensity of the received signal is between a maximum intensity and a minimum intensity of a signal detectable through the brake pedal sensor; And
And determining that the brake pedal is operating within a predetermined range if the received signal strength is between the maximum intensity and the minimum intensity.
How to determine the operating position of the brake pedal.
Whether or not the brake pedal is operated within a range that does not deviate from a predetermined deviation by more than a predetermined time,
Receiving a signal-processed signal through the processing step;
Determining whether the strength of the received signal is less than a tolerable noise intensity of a signal detectable through the brake pedal sensor;
If the strength of the received signal is less than the noise intensity, activating a timer; And
And determining that the brake pedal is operating within a range that does not deviate from a predetermined deviation by more than a predetermined time when the timer operates for a predetermined time or more.
How to determine the operating position of the brake pedal.
Whether or not the brake pedal has operated within a range in which the brake pedal sensor can detect a signal,
Receiving a signal-processed signal through the processing step;
Determining whether the intensity of the received signal is greater than a threshold intensity that can determine whether the brake pedal is operating through the brake pedal sensor;
If the strength of the received signal is greater than the threshold strength, activating a timer; And
And determining that the brake pedal is operating within a range in which the brake pedal sensor can detect a signal when the timer operates for a predetermined time or more.
How to determine the operating position of the brake pedal.
Whether or not the brake pedal has operated within a range in which the brake pedal sensor can detect a signal,
Determining if the strength of another received signal is greater than the threshold strength after the received signal is determined to be greater than the threshold strength; And
And returning to the step of receiving the signal processed through the processing step if the strength of the other signal is greater than the threshold strength.
How to determine the operating position of the brake pedal.
Wherein,
Calculating a position of the brake pedal when the brake pedal is stepped on the basis of a position at which the brake pedal is fully released from the signal processed through the processing step as a ratio, And calculates a position at which the brake pedal is operated,
How to determine the operating position of the brake pedal.
Wherein,
And calculating a position at which the brake pedal is operated by adjusting the ratio through a previously stored previous learning value when the learning value is not calculated because the condition for calculating the learning value is not satisfied in the confirming step As a result,
How to determine the operating position of the brake pedal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020130053245A KR102000768B1 (en) | 2013-05-10 | 2013-05-10 | Method for determining operating location of brake pedal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020130053245A KR102000768B1 (en) | 2013-05-10 | 2013-05-10 | Method for determining operating location of brake pedal |
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| KR20140133729A true KR20140133729A (en) | 2014-11-20 |
| KR102000768B1 KR102000768B1 (en) | 2019-10-02 |
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| KR1020130053245A KR102000768B1 (en) | 2013-05-10 | 2013-05-10 | Method for determining operating location of brake pedal |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05106499A (en) * | 1991-10-18 | 1993-04-27 | Daihatsu Motor Co Ltd | Throttle opening restriction method for rear-end collision prevention system |
| JP2012096633A (en) * | 2010-11-01 | 2012-05-24 | Denso Corp | Brake sensor failure diagnosis device |
| JP2012162192A (en) * | 2011-02-08 | 2012-08-30 | Honda Motor Co Ltd | Power parking brake device |
-
2013
- 2013-05-10 KR KR1020130053245A patent/KR102000768B1/en active IP Right Grant
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05106499A (en) * | 1991-10-18 | 1993-04-27 | Daihatsu Motor Co Ltd | Throttle opening restriction method for rear-end collision prevention system |
| JP2012096633A (en) * | 2010-11-01 | 2012-05-24 | Denso Corp | Brake sensor failure diagnosis device |
| JP2012162192A (en) * | 2011-02-08 | 2012-08-30 | Honda Motor Co Ltd | Power parking brake device |
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| KR102000768B1 (en) | 2019-10-02 |
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