阅读说明：本技术 驾驶员换挡意图识别方法 (Driver gear-shifting intention identification method ) 是由 季明微 常耀红 赖燕斌 王涛 杨标 温敏 徐洪伟 侯金 于 2021-09-24 设计创作，主要内容包括：本发明公开了一种驾驶员换挡意图识别方法,包括：获取第一旋钮角度变化信号；换挡器根据第一旋钮角度变化信号的持续时间,发送第一一阶信号；根据持续时间,判断旋钮是否回到初始位置；若未获取到第二旋钮角度变化信号,则根据第一一阶信号确定换挡意图；若获取到第二旋钮角度变化信号,且旋钮回到初始位置,则换挡器发送第二一阶信号,并根据第一一阶信号和第二一阶信号确定换挡意图；若获取到第二旋钮角度变化信号,且旋钮未回到初始位置,则换挡器发送二阶信号,并根据第一一阶信号和二阶信号确定换挡意图。本发明的驾驶员换挡意图识别方法,根据驾驶员的操作及在某个挡位槽的不同停留时间而输出不同波形,能够准确识别驾驶员的换挡意图。(The invention discloses a method for identifying a driver gear shifting intention, which comprises the following steps: acquiring a first knob angle change signal; the gear shifter sends a first primary signal according to the duration time of the first knob angle change signal; judging whether the knob returns to the initial position or not according to the duration; if the second knob angle change signal is not acquired, determining a gear shifting intention according to the first primary-order signal; if a second knob angle change signal is acquired and the knob returns to the initial position, the gear shifter sends a second-order signal and determines a gear shifting intention according to the first-order signal and the second-order signal; and if the second knob angle change signal is acquired and the knob does not return to the initial position, the gear shifter sends a second-order signal and determines the gear shifting intention according to the first-order signal and the second-order signal. The method for identifying the gear shifting intention of the driver can accurately identify the gear shifting intention of the driver by outputting different waveforms according to the operation of the driver and different stay time of a certain gear groove.)

1. A driver shift intention identification method, characterized by comprising:

acquiring a first knob angle change signal;

the gear shifter sends a first primary signal according to the duration time of the first knob angle change signal;

judging whether the knob position signal returns to the initial position or not according to the duration of the first knob angle change signal;

judging whether a second knob angle change signal is acquired or not;

if the second knob angle change signal is not acquired, determining a gear shifting intention according to the first primary signal;

if the second knob angle change signal is acquired and the knob position signal returns to the initial position, the gear shifter sends a second-order signal and determines a gear shifting intention according to the first-order signal and the second-order signal;

and if the second knob angle change signal is acquired and the knob position signal does not return to the initial position, the gear shifter sends a second-order signal and determines the gear shifting intention according to the first-order signal and the second-order signal.

2. The method for identifying the shifting intention of the driver as claimed in claim 1, wherein the acquiring the first knob angle change signal specifically comprises:

detecting the angle variation corresponding to the fact that a driver rotates a one-grid gear shifting knob through an angle Hall sensor to obtain a first knob angle variation signal;

the angle hall sensor sends the first primary signal to the shifter.

3. The method for identifying the shifting intention of the driver as claimed in claim 1, wherein the shifter transmits a first primary signal according to the duration of the first knob angle change signal, and specifically comprises:

judging whether the duration time of the first knob angle change signal exceeds a preset period or not;

if the duration time of the first knob angle change signal exceeds a preset period, the gear shifter sends a first primary signal, and the duration time of the first primary signal is the preset period;

if the duration time of the first knob angle change signal does not exceed a preset period, the gear shifter sends a first primary signal, and the duration time of the first primary signal is the duration time of the first knob angle change signal.

4. The method for identifying the shifting intention of the driver as claimed in claim 3, wherein the determining whether the knob position signal returns to the initial position according to the duration of the first knob angle change signal specifically comprises:

if the duration time of the first knob angle change signal exceeds a preset period, determining that the knob position signal returns to the initial position;

and if the duration time of the first knob angle change signal does not exceed a preset period, determining that the knob position signal does not return to the initial position.

5. The method for identifying the shifting intention of the driver as claimed in claim 2, wherein the determining whether the second knob angle change signal is acquired specifically comprises:

if the angle Hall sensor detects the angle variation corresponding to the second grid gear shifting knob rotated by the driver, determining to acquire a second knob angle variation signal;

the angle hall sensor sends the second first order signal or the second order signal to the shifter.

6. The method for identifying the shifting intention of the driver as claimed in claim 1, wherein in a case where the second knob angle change signal is not acquired, the determining the shifting intention according to the first primary signal specifically comprises:

and the actual gear jumps to the neutral gear from the gear before the first primary step signal by one single jump.

7. The method for identifying a shifting intention of a driver as claimed in claim 1, wherein when the second knob angle change signal is obtained and the knob position signal returns to an initial position, the shifter transmits a second-order signal and determines the shifting intention according to the first-order signal and the second-order signal, and specifically comprises:

and the actual gear is subjected to two single jumps, the actual gear jumps to the neutral gear from the gear before the first-order signal, and then jumps to the gear corresponding to the second-order signal.

8. The method for identifying a shifting intention of a driver as claimed in claim 1, wherein when the second knob angle change signal is obtained and the knob position signal does not return to an initial position, the shifter transmits a second order signal and determines the shifting intention according to the first and second order signals, specifically comprising:

and the actual gear is continuously hopped once, and the gear before the first primary-order signal is hopped to the gear corresponding to the second-order signal.

9. The driver shift intention recognition method according to claim 1, characterized in that the driver shift intention recognition method further comprises:

the duration of the initial position signal is optimized so that the actual response gear of the transmission control unit corresponds to the gear change intention.

10. The driver shift intention identification method according to claim 9, characterized in that the optimizing of the duration of the initial position signal so that the actual response gear of the transmission control unit coincides with the shift intention comprises in particular:

after the shifter detects an initial position signal, if the duration of the initial position signal is less than the filtering time of the transmission control unit, the duration of the initial position signal is complemented to the filtering time of the transmission control unit by using the time of a first-order signal after the initial position signal, and the time of the first-order signal after the initial position signal is shortened by corresponding time.

Technical Field

The invention relates to the technical field of automobile gear shifting, in particular to a method for identifying a gear shifting intention of a driver.

Background

The knob selector that present car adopted is mostly monostable structure, and the selector has only the position that a steady state can stop promptly, and this position is provided with from return mechanism, and the driver is when shifting gears, rotates the knob once right or left, and the hand loosens the automatic initial position that returns of back knob. The structure is easy to identify the gear shifting intention of a driver, and position data sensed by the angle Hall sensor in the knob gear shifter are all the same angle value every time the knob is rotated, so that the gear calculation of the transmission can be finally realized only by sending a position signal detected by the sensor in real time to a Transmission Control Unit (TCU). However, the knob shifter with the monostable structure has poor gear shifting hand feeling, and a driver cannot switch to any gear to be switched through one operation, for example, the current gear of a vehicle is in a D gear (a forward gear), if the driver wants to enter an R gear (a reverse gear), the driver needs to rotate left to enter an N gear (a neutral gear) and then rotate left to enter the R gear, so that the operation is inconvenient.

Therefore, a need exists for a driver shift intent identification method.

Disclosure of Invention

The invention aims to provide a method for identifying a shifting intention of a driver, which aims to solve the problems in the prior art, can output different waveforms according to the operation of the driver and different stay time in a certain gear groove, and can accurately identify the shifting intention of the driver.

The invention provides a method for identifying a shifting intention of a driver, which comprises the following steps:

acquiring a first knob angle change signal;

the gear shifter sends a first primary signal according to the duration time of the first knob angle change signal;

judging whether the knob position signal returns to the initial position or not according to the duration of the first knob angle change signal;

judging whether a second knob angle change signal is acquired or not;

if the second knob angle change signal is not acquired, determining a gear shifting intention according to the first primary signal;

if the second knob angle change signal is acquired and the knob position signal returns to the initial position, the gear shifter sends a second-order signal and determines a gear shifting intention according to the first-order signal and the second-order signal;

and if the second knob angle change signal is acquired and the knob position signal does not return to the initial position, the gear shifter sends a second-order signal and determines the gear shifting intention according to the first-order signal and the second-order signal.

The method for identifying a shifting intention of a driver as described above, wherein preferably, the acquiring a first knob angle change signal specifically includes:

detecting the angle variation corresponding to the fact that a driver rotates a one-grid gear shifting knob through an angle Hall sensor to obtain a first knob angle variation signal;

the angle hall sensor sends the first primary signal to the shifter.

The method for identifying shifting intention of driver as described above, wherein preferably, the step of transmitting the first primary signal by the shifter according to the duration of the first knob angle change signal includes:

judging whether the duration time of the first knob angle change signal exceeds a preset period or not;

if the duration time of the first knob angle change signal exceeds a preset period, the gear shifter sends a first primary signal, and the duration time of the first primary signal is the preset period;

if the duration time of the first knob angle change signal does not exceed a preset period, the gear shifter sends a first primary signal, and the duration time of the first primary signal is the duration time of the first knob angle change signal.

The method for identifying a shifting intention of a driver as described above, wherein preferably, the determining whether the knob position signal returns to the initial position according to the duration of the first knob angle change signal includes:

if the duration time of the first knob angle change signal exceeds a preset period, determining that the knob position signal returns to the initial position;

and if the duration time of the first knob angle change signal does not exceed a preset period, determining that the knob position signal does not return to the initial position.

The method for identifying a shifting intention of a driver as described above, wherein preferably, the determining whether the second knob angle change signal is acquired specifically includes:

if the angle Hall sensor detects the angle variation corresponding to the second grid gear shifting knob rotated by the driver, determining to acquire a second knob angle variation signal;

the angle hall sensor sends the second first order signal or the second order signal to the shifter.

The method for identifying a shifting intention of a driver as described above, wherein preferably, in a case where the second knob angle change signal is not acquired, the determining a shifting intention according to the first primary signal specifically includes:

and the actual gear jumps to the neutral gear from the gear before the first primary step signal by one single jump.

The method for identifying a shifting intention of a driver as described above, wherein preferably, when the second knob angle change signal is acquired and the knob position signal returns to the initial position, the shifter transmits a second-order signal and determines the shifting intention according to the first-order signal and the second-order signal, specifically comprising:

and the actual gear is subjected to two single jumps, the actual gear jumps to the neutral gear from the gear before the first-order signal, and then jumps to the gear corresponding to the second-order signal.

The method for identifying a shifting intention of a driver as described above, wherein preferably, when the second knob angle change signal is acquired and the knob position signal does not return to the initial position, the shifter transmits a second-order signal and determines the shifting intention according to the first-order signal and the second-order signal, specifically comprising:

and the actual gear is continuously hopped once, and the gear before the first primary-order signal is hopped to the gear corresponding to the second-order signal.

The driver gear shift intention identifying method as described above, wherein preferably the driver gear shift intention identifying method further comprises:

the duration of the initial position signal is optimized so that the actual response gear of the transmission control unit corresponds to the gear change intention.

The method for identifying a driver's shift intention as described above, wherein preferably the optimizing the duration of the initial position signal so that the actual response gear of the transmission control unit corresponds to the shift intention, specifically comprises:

after the shifter detects an initial position signal, if the duration of the initial position signal is less than the filtering time of the transmission control unit, the duration of the initial position signal is complemented to the filtering time of the transmission control unit by using the time of a first-order signal after the initial position signal, and the time of the first-order signal after the initial position signal is shortened by corresponding time.

The invention provides a method for identifying a driver gear shifting intention, which is suitable for identifying the driver gear shifting intention of a 360-degree infinite rotation knob type electronic gear shifting system, can output different waveforms according to the operation of a driver and different staying time in a certain gear groove, judges whether a knob position signal returns to an initial position according to the duration time of a first knob angle change signal, and is convenient for a transmission control unit to calculate the gear of a transmission according to an output signal of a gear shifter, so the gear shifting intention of the driver can be accurately identified; the invention also provides a gear shifting intention identification strategy under special working conditions when the one-grid knob is rotated, the two-grid knob is rapidly rotated and the two-grid knob is rotated, which is beneficial to realizing the accurate identification of the gear shifting intention of the driver under different operations and different working conditions of the driver.

Drawings

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings, in which:

FIG. 1 is a flow chart of an embodiment of a driver shift intention identification method provided by the present invention;

FIG. 2 is a flow chart of a method for identifying a driver's shift intention when rotating a shift knob according to the present invention;

FIG. 3 is a first waveform output curve of the method for identifying a driver's shift intention when rotating a shift knob according to the present invention;

FIG. 4 is a flow chart of the method for identifying a driver's shift intention when rotating a two-compartment shift knob according to the present invention;

FIG. 5 is a second waveform output curve of the method for identifying a driver's shift intention when rotating a two-grid shift knob according to the present invention;

FIG. 6 is a third waveform output curve of the method for identifying a driver's shifting intention when rotating the two-grid shift knob according to the present invention;

FIG. 7 is a waveform output curve under a special condition when the two-grid shift knob is rotated according to the method for identifying the shift intention of the driver provided by the invention;

fig. 8 is a waveform output curve optimized when the two-grid shift knob is rotated according to the method for identifying the shift intention of the driver provided by the invention.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.

As used in this disclosure, "first", "second": and the like, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In the present disclosure, when a specific component is described as being located between a first component and a second component, there may or may not be intervening components between the specific component and the first component or the second component. When it is described that a specific component is connected to other components, the specific component may be directly connected to the other components without having an intervening component, or may be directly connected to the other components without having an intervening component.

All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

The gear shifting intention of the existing monostable knob gear shifter is easy to identify, and only a position signal detected by a Hall sensor in the knob gear shifter in real time needs to be sent to a Transmission Control Unit (TCU), so that the gear shifting of the transmission is finally realized. However, this method for identifying the driver's shifting intention is only applicable to monostable knob shifters, and with the development direction of intellectualization and science and technology of the shifters, a knob shifter with 360 ° infinite rotation comes along, the shifter is uniformly provided with 16 shift grooves in the whole circumference range, every 22.5 ° is a shift rotation angle, the knob can stay in the 16 shift grooves, the driver can continuously rotate the knob to switch to the target shift according to the actual requirement, for example, the driver can switch from the D shift to the R shift, and the driver can directly enter the R shift by rotating the knob twice or three times to the left. The shifter is provided with a plurality of gear slots, each gear slot can stay without a self-return mechanism, an initial position on a physical structure does not exist, position data sensed by a sensor is an angle value which is accumulated continuously, and a TCU (train protection gear) cannot calculate an actual PRND (P is a parking gear, R is a reverse gear, N is a neutral gear and D is a forward gear) gear according to the angle values, so that the existing gear shifting intention identification method is not applicable.

In order to solve the defects, the invention provides a method for identifying the shifting intention of a driver, which is suitable for a 360-degree infinite rotation knob type electronic shifting system. As shown in fig. 1, the method for identifying a shifting intention of a driver provided by this embodiment specifically includes the following steps in an actual execution process:

and step S1, acquiring a first knob angle change signal.

In an embodiment of the method for identifying a driver' S shift intention, step S1 may specifically include:

and step S11, detecting the angle variation corresponding to the fact that the driver rotates the one-grid gear shifting knob through the angle Hall sensor to obtain a first knob angle variation signal.

And step S12, the angle Hall sensor sends the first primary signal to the shifter.

Fig. 2 shows a flow chart when the one-grid shift knob is rotated, and fig. 4 shows a flow chart when the two-grid shift knob is rotated, as shown in fig. 2 and fig. 4, firstly, the driver rotates the one-grid knob, and in the process of rotating the knob, the angle hall sensor senses the angle change, and then sends a first primary signal.

And step S2, the gear shifter sends a first primary signal according to the duration time of the first knob angle change signal.

In an embodiment of the method for identifying a driver' S shift intention, step S2 may specifically include:

and step S21, judging whether the duration time of the first knob angle change signal exceeds a preset period.

The preset period is, for example, 200 ms. In the decision block shown in fig. 4, it is detected whether the time taken for the driver to perform the one-turn knob operation exceeds 200 ms.

Step S22, if the duration of the first knob angle change signal exceeds a preset period, the shifter sends a first primary signal, and the duration of the first primary signal is the preset period.

As shown in fig. 2, the shifter detects that the knob keeps the current angle value for more than 200ms, i.e. the duration of the first knob angle change signal exceeds the preset period, and at this time, the shifter continuously sends the 200ms first primary signal. As shown in fig. 4, if it is detected that the time taken for the driver to perform the one-turn knob motion exceeds 200ms, the shifter continues to transmit the 200ms first primary signal.

Step S23, if the duration of the first knob angle change signal does not exceed a preset period, the shifter sends a first primary signal, and the duration of the first primary signal is the duration of the first knob angle change signal.

As shown in fig. 4, if it is detected that the time taken for the driver to perform the one-turn knob operation does not exceed 200ms, the first primary signal is transmitted according to the actual operation time (for example, 120 ms).

And step S3, judging whether the knob position signal returns to the initial position according to the duration time of the first knob angle change signal.

In an embodiment of the method for identifying a driver' S shift intention, step S3 may specifically include:

and step S31, if the duration time of the first knob angle change signal exceeds a preset period, determining that the knob position signal returns to the initial position.

As shown in fig. 2, when the shifter detects that the knob is maintained at the current angle value for more than 200ms, i.e., the duration of the first knob angle change signal exceeds the preset period, it is determined that the knob position signal changes to home (initial position). As shown in fig. 4, if it is detected that the time taken for the driver to perform the one-turn knob operation exceeds 200ms, it is determined that the knob position signal becomes home (initial position).

And step S32, if the duration of the first knob angle change signal does not exceed the preset period, determining that the knob position signal does not return to the initial position.

As shown in fig. 4, if it is detected that the time taken for the driver to perform the one-turn knob operation does not exceed 200ms, it is determined that the knob position signal does not return to the initial position.

And step S4, judging whether a second knob angle change signal is acquired.

In an embodiment of the method for identifying a driver' S shift intention, step S4 may specifically include:

and step S41, if the angle Hall sensor detects the angle variation corresponding to the second-grid gear shifting knob rotated by the driver, determining to acquire a second knob angle variation signal.

And step S42, the angle Hall sensor sends the second first-order signal or the second-order signal to the gear shifter.

The first-order signal represents that the actual gear only jumps once; the second order signal indicates that two jumps have occurred in the actual gear. As shown in fig. 4, after the knob position signal changes to home (initial position), the driver rotates the second knob, the angle hall sensor senses a new angle change, and sends a second first-order signal; as shown in fig. 4, after determining that the knob position signal does not return to the initial position, the driver turns the second knob, the angle hall sensor senses a new angle change, and a second order signal is sent.

And step S5, if the second knob angle change signal is not acquired, determining a gear shifting intention according to the first primary signal.

Specifically, the actual gear is shifted to the neutral gear from the gear before the first primary-order signal by a single jump, and if the current gear of the vehicle is in the D gear, the current gear is shifted to the N gear after receiving the first-order signal. In a particular implementation, the shifter transmits a first primary signal embodying the knob position signal to a Transmission Control Unit (TCU) to cause the transmission control unit to calculate the transmission gear based on the first primary signal. The first waveform output curve corresponding to fig. 2 when the shift knob is rotated one frame is shown in fig. 3, and a first order signal appears in the first waveform output curve. After the driver rotates one knob, the driver can automatically return to the initial position after the driver looses his hands in the prior art, and the transmitted signal can automatically jump from the first-order signal to the original O-position signal. According to the driving intention identification method suitable for the 360-degree infinite rotation gear shifting knob, due to the particularity of the structure of the 360-degree infinite rotation knob, after a driver rotates one knob, the knob stays at the current position and cannot return to the initial position, but the TCU identifies knob signals gradually accumulated from the initial O position every time, so that for the structure of the 360-degree infinite rotation knob, a preset period (for example, a time period of 200 ms) is set, and when the time that the knob stays at one position exceeds 200ms, the signals automatically jump back to the initial O position.

And step S6, if the second knob angle change signal is acquired and the knob position signal returns to the initial position, the shifter sends a second-order signal and determines the gear shifting intention according to the first-order signal and the second-order signal.

As shown in fig. 4, the step of sending the second-order signal by the shifter specifically includes that after the angle hall sensor sends the second-order signal, the shifter detects that the current angle value of the knob is kept for more than 200ms, the shifter continuously sends the 200ms second-order signal, and then the knob position signal changes to home (initial position). Determining the gear shifting intention according to the first-order signal and the second-order signal specifically includes that the actual gear undergoes two single jumps, the actual gear jumps to the neutral gear from the gear before the first-order signal, and then jumps to the gear corresponding to the second-order signal. In a specific implementation, the shifter transmits a first order signal and a second first order signal representing the knob position signal to a Transmission Control Unit (TCU) to cause the transmission control unit to calculate the transmission gear based on the first order signal and the second first order signal. Fig. 5 shows a second waveform output curve when the two-step shift knob is rotated, where two first-order signals appear in the second waveform output curve, and an initial position signal exists between the two first-order signals, which indicates that the driver has slowly rotated the two-step shift knob, i.e., the driver operates the second step after the driver has rotated one step and stays in the position for more than 200ms, and the signal jumps from the first step to the O position to the first step.

And step S7, if the second knob angle change signal is acquired and the knob position signal does not return to the initial position, the shifter sends a second-order signal and determines a gear shifting intention according to the first-order signal and the second-order signal.

As shown in fig. 4, the step of sending the second-order signal by the gear shifter specifically includes: after the angle hall sensor sends a second-order signal, the shifter detects that the current angle value of the knob is kept for more than 200ms, the shifter continuously sends a 200m second-order signal, and then the knob position signal is changed into home (initial position). Specifically, the actual gear is continuously shifted once, and the actual gear is shifted from the gear before the first primary-order signal to the gear corresponding to the second-order signal. In a particular implementation, the shifter sends first and second order signals representing the knob position signal to a Transmission Control Unit (TCU) to cause the transmission control unit to calculate the transmission gear based on the first and second order signals. Fig. 6 shows a third waveform output curve when the two-compartment shift knob is rotated, where a first-order signal and a second-order signal appear in the third waveform output curve, and there is no initial position signal between the first-order signal and the second-order signal, which indicates that the driver has rotated the two-compartment shift knob quickly and continuously, i.e., the driver has stopped at the position for less than 200ms after rotating one compartment and then operates the second compartment, and the signal jumps from the first compartment to the second compartment. The knob sends a first-order signal and then sends a second-order signal, the actual gear can jump twice, if the current vehicle gear is in the D gear, the current vehicle gear can jump to the N gear after receiving the first-order signal, and then jump to the R gear after receiving the second-order signal. The method for identifying the shifting intention of the driver can improve the driving feeling of the driver, and the driver intuitively feels that the gear response speed is high without time delay. Therefore, when the driver rotates the knob with two grids, when the rotation speed of the driver is different from the interval time of the two grids, the output wave curves are different, and the identified gear shifting intention is also different. It should be noted that, by rotating the output waveform of the two or more knobs and the output waveform of the two or more knobs, the shifter does not recognize the driver's operation of the two or more knobs.

Further, in one embodiment of the present invention, the driver shift intention identifying method further includes:

step S8, the duration of the initial position signal is optimized so that the actual response gear of the transmission control unit corresponds to the gear change intention.

Considering that a signal output by a rotary-knob shifter is filtered by a Transmission Control Unit (TCU) for 60ms, when a driver rotates a two-grid knob rapidly and the interval time of two operations is less than 60ms, a home initial position is filtered, the TCU receives a first-order signal which is 400ms long as shown in FIG. 7, the gear actually responded by the TCU does not accord with the shifting intention of the driver, and the driver operates the knob twice, and the TCU only receives one signal change. Therefore, the invention performs special processing on the waveform output curve under special working conditions, specifically, after the shifter detects the initial position signal, if the duration of the initial position signal is less than the filtering time (60ms) of the transmission control unit, the duration of the initial position signal is supplemented to the filtering time of the transmission control unit by using the time of the first order signal after the initial position signal, and the time of the first order signal after the initial position signal is shortened by corresponding time. That is, after the shifter detects that the home initial position signal is sent, if the home signal duration is less than 60ms, the following first-order signal time is used to complement the home signal duration to 60ms, and the following first-order signal duration is correspondingly shortened, so that the time of the first-order signal is 200ms, the time of the second first-order signal is 140-200ms, and the optimized waveform output curve is shown in fig. 8.

The method for identifying the shifting intention of the driver is suitable for identifying the shifting intention of the driver of a 360-degree infinite rotation knob type electronic shifting system, different waveforms can be output according to the operation of the driver and different stay time of the driver in a certain gear groove, whether a knob position signal returns to an initial position or not is judged according to the duration time of a first knob angle change signal, a transmission control unit can conveniently calculate the gear of a transmission according to an output signal of a shifter, and therefore the shifting intention of the driver can be accurately identified; the invention also provides a gear shifting intention identification strategy under special working conditions when the one-grid knob is rotated, the two-grid knob is rapidly rotated and the two-grid knob is rotated, which is beneficial to realizing the accurate identification of the gear shifting intention of the driver under different operations and different working conditions of the driver.

Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.