阅读说明：本技术 一种基于单稳态旋钮式档位的控制方法及系统 (Control method and system based on monostable knob type gear ) 是由 刘永 李立闯 魏广杰 游道亮 于 2021-05-26 设计创作，主要内容包括：本发明提供一种基于单稳态旋钮式档位的控制方法及系统,该方法包括判断出当前车辆的实际档位,实际档位为当前车辆在当前状态下的档位；当当前车辆的挡位发生变化时,接收SCU发送的实时档位位置信号,实时档位位置信号包括当前车辆的目标档位；根据当前车辆的车况信息判断当前车辆是否能够由实际挡位切换至目标档位,车况信息包括当前车速、油门踏板位置信息以及刹车踏板位置信息；若是,则将实际档位切换为目标档位。通过上述方式能够快速的分析出当前车辆的挡位信息以及快速的将当前车辆的实际挡位切换至需要的目标挡位,其挡位判断逻辑简单、便捷,消除了车辆的安全隐患。(The invention provides a control method and a system based on a monostable knob type gear, wherein the method comprises the steps of judging the actual gear of the current vehicle, wherein the actual gear is the gear of the current vehicle in the current state; when the gear of the current vehicle changes, receiving a real-time gear position signal sent by an SCU, wherein the real-time gear position signal comprises a target gear of the current vehicle; judging whether the current vehicle can be switched to a target gear from an actual gear according to the vehicle condition information of the current vehicle, wherein the vehicle condition information comprises the current vehicle speed, the position information of an accelerator pedal and the position information of a brake pedal; and if so, switching the actual gear to the target gear. Through the above mode, the gear information of the current vehicle can be quickly analyzed, the actual gear of the current vehicle can be quickly switched to the required target gear, the gear judgment logic is simple and convenient, and the potential safety hazard of the vehicle is eliminated.)

1. A control method based on monostable knob gears, the method comprising:

judging an actual gear of a current vehicle, wherein the actual gear is a gear of the current vehicle in a current state;

when the gear of the current vehicle changes, receiving a real-time gear position signal sent by an SCU, wherein the real-time gear position signal comprises a target gear of the current vehicle;

judging whether the current vehicle can be switched to the target gear from the actual gear according to the vehicle condition information of the current vehicle, wherein the vehicle condition information comprises the current vehicle speed, the position information of an accelerator pedal and the position information of a brake pedal;

and if so, switching the actual gear to the target gear.

2. The control method based on monostable knob-type gears according to claim 1, characterized in that: the step of judging the actual gear of the current vehicle comprises the following steps:

when the vehicle is in an un-started state, determining that the actual gear of the current vehicle is an N gear;

and when the vehicle is in a starting state, determining that the actual gear of the current vehicle is one of an N gear, an R gear and a D gear.

3. The control method based on monostable knob-type gears according to claim 1, characterized in that: when the gear of the current vehicle changes, the step of receiving the real-time gear position signal sent by the SCU comprises the following steps:

when the gears of the monostable knob type gear shifter are switched, triggering the SCU and detecting a position change signal of a gear origin of the monostable knob type gear shifter in real time through the SCU;

and when the position change of the gear origin is finished, receiving a real-time gear position signal of the gear origin through the SCU.

4. The control method based on monostable knob-type gears according to claim 1, characterized in that: the step of judging whether the current vehicle can be switched from the actual gear to the target gear according to the vehicle condition information of the current vehicle comprises the following steps:

judging whether the vehicle condition information of the current vehicle meets the gear shifting requirement or not;

and if so, switching the actual gear of the current vehicle to the target gear.

5. The control method based on monostable knob-type gears according to claim 1, characterized in that: after the step of switching the actual gear to the target gear, the method further includes:

and updating the target gear in an instrument panel in real time so that a driver can obtain gear information of the current vehicle.

6. A control system based on monostable knob gears, the system comprising:

the first judgment module is used for judging the actual gear of the current vehicle, wherein the actual gear is the gear of the current vehicle in the current state;

the receiving module is used for receiving a real-time gear position signal sent by the SCU when the gear of the current vehicle changes, wherein the real-time gear position signal comprises a target gear of the current vehicle;

the second judgment module is used for judging whether the current vehicle can be switched to the target gear from the actual gear according to the vehicle condition information of the current vehicle, wherein the vehicle condition information comprises the current vehicle speed, the position information of an accelerator pedal and the position information of a brake pedal;

and the execution module is used for switching the actual gear to the target gear.

7. The monostable knob-based shift control system according to claim 6, wherein: the first judging module is specifically configured to:

when the vehicle is in an un-started state, determining that the actual gear of the current vehicle is an N gear;

and when the vehicle is in a starting state, determining that the actual gear of the current vehicle is one of an N gear, an R gear and a D gear.

8. The monostable knob-based shift control system according to claim 6, wherein: the receiving module is specifically configured to:

when the gears of the monostable knob type gear shifter are switched, triggering the SCU and detecting a position change signal of a gear origin of the monostable knob type gear shifter in real time through the SCU;

and when the position change of the gear origin is finished, receiving a real-time gear position signal of the gear origin through the SCU.

9. The monostable knob-based shift control system according to claim 6, wherein: the second judgment module is specifically configured to:

judging whether the vehicle condition information of the current vehicle meets the gear shifting requirement or not;

and if so, switching the actual gear of the current vehicle to the target gear.

10. The control method based on monostable knob-type gears according to claim 1, characterized in that: the system further comprises:

and updating the target gear in an instrument panel in real time so that a driver can obtain gear information of the current vehicle.

Technical Field

The invention relates to the technical field of electric automobiles, in particular to a control method and a control system based on monostable knob type gears.

Background

With the progress of science and technology and the rapid development of productivity, new energy electric vehicles have been gradually recognized by people and become popular in daily life.

The existing pure electric automobile generally has no gearbox and a gearbox control unit TCU, the electric automobile is realized by the torque output and the torque direction of a motor when going forward or backward, and the torque of the motor is judged by the actual gear R, N and D of the current automobile, so the current actual gear logic calculation of the electric automobile is very important.

The gear shifting position of the monostable knob type gear shifter used on the existing electric automobile is only fixed at a gear origin, and the driver can return to the position of the gear origin after shifting at each time.

Disclosure of Invention

Based on the above, the invention aims to provide a control method and system based on a monostable knob type gear, so as to solve the problems that the gear judgment logic of a monostable knob type gear shifter in the prior art is complex, and the gear shifting switching is wrong.

A control method based on monostable knob gears, the method comprising:

judging an actual gear of a current vehicle, wherein the actual gear is a gear of the current vehicle in a current state;

when the gear of the current vehicle changes, receiving a real-time gear position signal sent by an SCU, wherein the real-time gear position signal comprises a target gear of the current vehicle;

judging whether the current vehicle can be switched to the target gear from the actual gear according to the vehicle condition information of the current vehicle, wherein the vehicle condition information comprises the current vehicle speed, the position information of an accelerator pedal and the position information of a brake pedal;

and if so, switching the actual gear to the target gear.

The invention has the beneficial effects that: the actual gear of the current vehicle is judged, then a real-time gear position signal sent by the SCU is received, and finally whether the current vehicle can be switched to the target gear from the actual gear is judged according to the vehicle condition information of the current vehicle, wherein if yes, the actual gear is switched to the target gear. Through the above mode, the gear information of the current vehicle can be quickly analyzed, the actual gear of the current vehicle can be quickly switched to the required target gear, the gear judgment logic is simple and convenient, the phenomenon of gear shifting and switching errors is effectively avoided, and the potential safety hazard of the vehicle is eliminated.

Preferably, the step of determining the actual gear of the current vehicle includes:

when the vehicle is in an un-started state, determining that the actual gear of the current vehicle is an N gear;

and when the vehicle is in a starting state, determining that the actual gear of the current vehicle is one of an N gear, an R gear and a D gear.

Preferably, when the gear of the current vehicle changes, the step of receiving the real-time gear position signal sent by the SCU includes:

when the gears of the monostable knob type gear shifter are switched, triggering the SCU and detecting a position change signal of a gear origin of the monostable knob type gear shifter in real time through the SCU;

and when the position change of the gear origin is finished, receiving a real-time gear position signal of the gear origin through the SCU.

Preferably, the step of determining whether the current vehicle can be switched from the actual gear to the target gear according to the vehicle condition information of the current vehicle includes:

judging whether the vehicle condition information of the current vehicle meets the gear shifting requirement or not;

and if so, switching the actual gear of the current vehicle to the target gear.

Preferably, after the step of switching the actual gear to the target gear, the method further includes:

and updating the target gear in an instrument panel in real time so that a driver can obtain gear information of the current vehicle.

Another object of the present invention is to propose a control system based on monostable knob gears, characterized in that it comprises:

the first judgment module is used for judging the actual gear of the current vehicle, wherein the actual gear is the gear of the current vehicle in the current state;

the receiving module is used for receiving a real-time gear position signal sent by the SCU when the gear of the current vehicle changes, wherein the real-time gear position signal comprises a target gear of the current vehicle;

the second judgment module is used for judging whether the current vehicle can be switched to the target gear from the actual gear according to the vehicle condition information of the current vehicle, wherein the vehicle condition information comprises the current vehicle speed, the position information of an accelerator pedal and the position information of a brake pedal;

and the execution module is used for switching the actual gear to the target gear.

In the control system based on the monostable knob type gear, the first determination module is specifically configured to:

when the vehicle is in an un-started state, determining that the actual gear of the current vehicle is an N gear;

and when the vehicle is in a starting state, determining that the actual gear of the current vehicle is one of an N gear, an R gear and a D gear.

In the control system based on the monostable knob type gear, the receiving module is specifically configured to:

when the gears of the monostable knob type gear shifter are switched, triggering the SCU and detecting a position change signal of a gear origin of the monostable knob type gear shifter in real time through the SCU;

and when the position change of the gear origin is finished, receiving a real-time gear position signal of the gear origin through the SCU.

In the control system based on the monostable knob type gear, the second determination module is specifically configured to:

judging whether the vehicle condition information of the current vehicle meets the gear shifting requirement or not;

and if so, switching the actual gear of the current vehicle to the target gear.

The system further comprises:

and updating the target gear in an instrument panel in real time so that a driver can obtain gear information of the current vehicle.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a flowchart of a control method based on monostable knob-type shift according to a first embodiment of the present invention;

FIG. 2 is a flowchart of a control method based on monostable knob-type shift according to a second embodiment of the present invention;

fig. 3 is a block diagram of a control system based on a monostable knob type shift according to a third embodiment of the present invention.

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The gear shifting position of the monostable knob type gear shifter used on the existing electric automobile is only fixed at a gear origin, and the driver can return to the position of the gear origin after shifting at each time.

Referring to fig. 1, a control method based on monostable knob type gear position according to a first embodiment of the present invention is shown, the method is applied to an electric vehicle equipped with a monostable knob type gear shifter, and the method is specifically applied between a vehicle control unit VCU, a gear position controller SCU and the monostable knob type gear shifter, wherein the method specifically includes the following steps:

specifically, the control method based on the monostable knob type gear according to the first embodiment of the present invention specifically includes the following steps:

step S10, judging the actual gear of the current vehicle, wherein the actual gear is the gear of the current vehicle in the current state;

in this embodiment, it can be understood that the existing vehicles are all provided with the gear shifters, wherein the monostable knob type gear shifter is widely applied to the pure electric vehicles, and the common gears of the existing gear shifters are the D gear, the N gear and the R gear.

Further, when the moving states of the vehicle are different, the gears of the vehicle are also different, and therefore, in this embodiment, the actual gear of the current vehicle is determined by the vehicle control unit VCU, and the actual gear is the gear of the current vehicle in the current state.

Step S20, when the gear of the current vehicle changes, receiving a real-time gear position signal sent by an SCU, wherein the real-time gear position signal comprises a target gear of the current vehicle;

it can be understood that, in the process of driving the automobile, the driver needs to correspondingly switch different gears according to different road conditions, for example, the driver needs to switch the D gear when the driver needs to move forward, and switch the R gear when the driver moves backward. Therefore, when the driver shifts the gear of the monostable knob type gear shifter to change the gear of the current vehicle, the vehicle control unit can immediately receive the real-time gear position signal sent by the gear controller SCU, the real-time gear position signal includes the target gear of the current vehicle, and the target gear can be the D gear, the N gear and the R gear.

Step S30, judging whether the current vehicle can be switched to the target gear from the actual gear according to the vehicle condition information of the current vehicle, wherein the vehicle condition information comprises the current vehicle speed, the position information of an accelerator pedal and the position information of a brake pedal;

specifically, in the present embodiment, it can be understood by those skilled in the art that the monostable knob type gear shifter has a gear origin, and returns to the position of the gear origin each time the gear is shifted.

In this embodiment, when the vehicle control unit receives a real-time gear position signal sent by the SCU, it is immediately determined whether the current vehicle can be switched from the actual gear to the target gear according to the current vehicle speed, the accelerator pedal position information, the brake pedal position information, and the like. When the shift request is satisfied, step S40 is executed.

And step S40, if yes, switching the actual gear to the target gear so as to quickly complete gear switching of the current vehicle.

When the gear shifting device is used, the actual gear of the current vehicle is judged, then a real-time gear position signal sent by the SCU is received, and finally whether the current vehicle can be switched to the target gear from the actual gear is judged according to the vehicle condition information of the current vehicle, wherein if yes, the actual gear is switched to the target gear. Through the above mode, the gear information of the current vehicle can be quickly analyzed, the actual gear of the current vehicle can be quickly switched to the required target gear, the gear judgment logic is simple and convenient, the phenomenon of gear shifting and switching errors is effectively avoided, and the potential safety hazard of the vehicle is eliminated.

It should be noted that the above implementation procedure is only for illustrating the applicability of the present application, but this does not represent that the control method based on the monostable knob type shift of the present application has only the above implementation procedure, and on the contrary, the control method based on the monostable knob type shift of the present application can be incorporated into the feasible embodiments of the present application as long as the control method based on the monostable knob type shift of the present application can be implemented.

In summary, the control method based on the monostable knob type gear in the above embodiments of the present invention can quickly analyze the gear information of the current vehicle and quickly switch the actual gear of the current vehicle to the required target gear, and the gear determination logic is simple and convenient, thereby effectively avoiding the occurrence of a gear shift switching error and eliminating the potential safety hazard of the vehicle.

Referring to fig. 2, a control method based on a monostable knob type shift according to a second embodiment of the present invention includes the following steps:

step S11, when the vehicle is in the non-starting state, the actual gear of the current vehicle is judged to be N gear; and when the vehicle is in a starting state, determining that the actual gear of the current vehicle is one of an N gear, an R gear and a D gear.

In this embodiment, it can be understood that when the vehicle is started, that is, in a stationary state, the vehicle at this time is switched to the N gear to keep the vehicle in the stationary state, and therefore, when the vehicle is in an unactuated state, it can be determined that the current actual gear of the vehicle is the N gear.

In addition, when the vehicle is in a starting state, the driver can correspondingly adjust a proper gear according to the real-time road condition, so that the current actual gear of the vehicle is one of the N gear, the R gear and the D gear. When the vehicle advances, the D gear is determined; when the vehicle moves backwards, the gear R is determined.

Step S21, when the gear of the monostable knob type gear shifter is switched, the SCU is triggered and a position change signal of the gear origin of the monostable knob type gear shifter is detected in real time through the SCU; and when the position change of the gear origin is finished, receiving a real-time gear position signal of the gear origin through the SCU.

Specifically, in the present embodiment, it can be understood by those skilled in the art that the monostable knob type gear shifter has a gear origin, and returns to the position of the gear origin each time the gear is shifted.

Specifically, in this embodiment, when the driver shifts the gear of the monostable knob type shift, the SCU can be triggered immediately and the position change signal of the gear origin of the monostable knob type shift can be detected in real time by the SCU.

In addition, when the position change of the gear origin is completed, the SCU receives a real-time gear position signal of the gear origin and sends the real-time gear position signal to the whole vehicle controller through the CAN bus.

Step S31, judging whether the vehicle condition information of the current vehicle meets the gear shifting requirement;

if yes, in step S41, the actual gear of the current vehicle is switched to the target gear.

Specifically, in the embodiment, for example, when the actual gear is the D gear and the target gear is the N gear, whether the current vehicle speed is less than 3km/h and whether the gear shifter is in failure are determined by the VCU;

if the current vehicle speed is less than 3km/h and no fault occurs in the gear shifter, the current vehicle can be immediately switched from the D gear to the N gear;

and if the speed of the current vehicle is not less than 3km/h or the shifter fails, the current vehicle cannot be switched from the D gear to the N gear.

Therefore, according to the same principle, in a specific implementation, the actual gear may be one of the D gear, the N gear, and the R gear, the target gear may also be one of the D gear, the N gear, and the R gear, and the process of switching from the actual gear to the target gear can be quickly implemented by using the similar principle, which is not described herein again.

And step S51, updating the target gear in an instrument panel in real time so that a driver can obtain the gear information of the current vehicle.

When gear switching is completed, the VCU can update the target gear in the instrument panel in real time, so that a driver can obtain gear information of the current vehicle.

It should be noted that, the method provided by the second embodiment of the present invention, which implements the same principle and produces some technical effects as the first embodiment, can refer to the corresponding contents in the first embodiment for the sake of brief description, where this embodiment is not mentioned.

In summary, the control method based on the monostable knob type gear in the above embodiments of the present invention can quickly analyze the gear information of the current vehicle and quickly switch the actual gear of the current vehicle to the required target gear, and the gear determination logic is simple and convenient, thereby effectively avoiding the occurrence of a gear shift switching error and eliminating the potential safety hazard of the vehicle.

Referring to fig. 3, a control system based on monostable knob type gears according to a third embodiment of the present invention is shown, the system specifically includes:

the first judging module 12 is configured to judge an actual gear of a current vehicle, where the actual gear is a gear of the current vehicle in a current state;

the receiving module 22 is configured to receive a real-time gear position signal sent by the SCU when the gear of the current vehicle changes, where the real-time gear position signal includes a target gear of the current vehicle;

the second judging module 32 is configured to judge whether the current vehicle can be switched from the actual gear to the target gear according to vehicle condition information of the current vehicle, where the vehicle condition information includes a current vehicle speed, accelerator pedal position information, and brake pedal position information;

and the execution module 42 is configured to switch the actual gear to the target gear.

In the control system based on the monostable knob type gear, the first determination module is specifically configured to:

when the vehicle is in an un-started state, determining that the actual gear of the current vehicle is an N gear;

and when the vehicle is in a starting state, determining that the actual gear of the current vehicle is one of an N gear, an R gear and a D gear.

In the control system based on the monostable knob type gear, the receiving module is specifically configured to:

when the gears of the monostable knob type gear shifter are switched, triggering the SCU and detecting a position change signal of a gear origin of the monostable knob type gear shifter in real time through the SCU;

and when the position change of the gear origin is finished, receiving a real-time gear position signal of the gear origin through the SCU.

In the control system based on the monostable knob type gear, the second determination module is specifically configured to:

judging whether the vehicle condition information of the current vehicle meets the gear shifting requirement or not;

and if so, switching the actual gear of the current vehicle to the target gear.

The system further comprises:

and updating the target gear in an instrument panel in real time so that a driver can obtain gear information of the current vehicle.

In summary, the control method and system based on the monostable knob type gear provided by the embodiments of the present invention can quickly analyze the gear information of the current vehicle and quickly switch the actual gear of the current vehicle to the required target gear, and the gear determination logic is simple and convenient, thereby effectively avoiding the occurrence of a gear shift switching error and eliminating the potential safety hazard of the vehicle.

The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.

More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.

It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.