阅读说明：本技术 一种单踏板控制系统及其控制方法 (Single-pedal control system and control method thereof ) 是由 陶晶晶 于 2020-12-18 设计创作，主要内容包括：本发明提供了一种单踏板控制系统及其控制方法,系统包括环境采集单元、踏板操控单元、计算单元以及执行单元；其中,环境采集单元用于获取车辆行驶参数以及周围环境和驾驶员的物理信息；踏板操控单元用于获取踏板工作状态,所述踏板工作状态包括踏板工况以及当前踏板工况下的踏板开度；计算单元用于分析所述车辆行驶参数、物理信息以及踏板工作状态并发出驾驶动作指令；执行单元用于接收驾驶动作指令并控制车辆行驶,所述执行单元包括转向系统、动力系统以及制动系统。本发明简化了驾驶员的操作,无需在加速踏板与制动踏板间频繁切换,只需要一个踏板,是真正意义上的单踏板。本发明能够防止误操作,更加节能,并能够减少摩擦制动。(The invention provides a single-pedal control system and a control method thereof, wherein the system comprises an environment acquisition unit, a pedal control unit, a calculation unit and an execution unit; the environment acquisition unit is used for acquiring vehicle running parameters, the surrounding environment and physical information of a driver; the pedal control unit is used for acquiring a pedal working state, wherein the pedal working state comprises a pedal working condition and a pedal opening degree under the current pedal working condition; the calculation unit is used for analyzing the vehicle running parameters, the physical information and the pedal working state and sending out a driving action instruction; the execution unit is used for receiving the driving action command and controlling the vehicle to run, and comprises a steering system, a power system and a braking system. The invention simplifies the operation of the driver, does not need to switch between an accelerator pedal and a brake pedal frequently, only needs one pedal, and is a single pedal in the true sense. The invention can prevent misoperation, save more energy and reduce friction braking.)

1. A single pedal control system, comprising:

the environment acquisition unit is used for acquiring vehicle running parameters, the surrounding environment and physical information of a driver;

the pedal control unit is used for acquiring a pedal working state, wherein the pedal working state comprises a pedal working condition and a pedal opening degree under the current pedal working condition;

the calculation unit is used for analyzing the vehicle running parameters, the physical information and the pedal working state and sending out a driving action instruction;

and the execution unit is used for receiving the driving action command and controlling the vehicle to run and comprises a steering system, a power system and a braking system.

2. The single pedal control system of claim 1 wherein: the environment acquisition unit comprises a sensor, a camera, a radar and a GPS.

3. The single pedal control system of claim 2 wherein the sensor includes:

an angle sensor for sensing a rotation angle of a vehicle steering wheel;

the speed sensor is used for acquiring the real-time running speed of the vehicle;

and the temperature sensor is used for measuring the real-time temperature of each part of the vehicle.

4. The single pedal control system of claim 1 wherein: the vehicle running parameters comprise energy information, vehicle speed, steering, real-time position and distance from a target place of the vehicle; the physical information of the surrounding environment includes roads, traffic signs, pedestrians, animals, motor vehicles, non-motor vehicles, trees, and buildings; the physical information of the driver includes a posture, a state, and an action of the driver.

5. The single pedal control system of claim 1 wherein: the pedal working conditions comprise a pedal treading working condition, a pedal releasing working condition and a pedal maintaining working condition, wherein the pedal treading working condition represents that the pedal opening at the current moment is smaller than the pedal opening at the last moment, the pedal releasing working condition represents that the pedal opening at the current moment is larger than the pedal opening at the last moment, and the pedal maintaining working condition represents that the pedal opening at the current moment is equal to the pedal opening at the last moment.

6. The single pedal control system of claim 1 wherein: the driving action command comprises a steering operation command, a power operation command, a braking operation command and an energy recovery operation command.

7. The single pedal control system of claim 1 wherein: the steering system comprises a steering wheel and a steering controller; the power system comprises an accelerator and an accelerator controller; the brake system includes a brake plate and a brake plate controller.

8. A single-pedal control method, comprising the steps of:

acquiring vehicle running parameters, the surrounding environment, physical information of a driver and a pedal working state;

generating a first vehicle control instruction according to vehicle driving parameters, wherein the vehicle driving parameters comprise one or more of energy information, vehicle speed, steering, real-time position and distance to a target place of a vehicle; generating a second vehicle control instruction according to a surrounding environment and physical information of the driver, the physical information of the surrounding environment including one or more of roads, traffic signs, pedestrians, animals, motor vehicles, non-motor vehicles, trees, and buildings, the physical information of the driver including one or more of a posture, a state, and an action of the driver; generating a third vehicle control instruction according to a pedal working state, wherein the pedal working state comprises a pedal working condition and a pedal opening under the current pedal working condition;

analyzing execution weights of the first vehicle control instruction, the second vehicle control instruction and the third vehicle control instruction;

sending out a driving action instruction according to the execution weight;

and controlling the vehicle to run according to the driving action command.

9. The single-pedal control method according to claim 8, wherein: the execution weight is obtained according to the contact ratio of the driving action commands sent when the first vehicle control command, the second vehicle control command and the third vehicle control command are respectively executed.

Technical Field

The invention relates to an automatic control technology of passenger vehicle components, in particular to a single-pedal control system and a control method thereof.

Background

The conventional ePidal/one pedal can finish the operations of starting, accelerating, decelerating, braking and the like of the vehicle by analyzing the force of stepping on an accelerator pedal by a driver. Once the accelerator is completely released, the functions of regenerative braking and friction braking are automatically started, and the vehicle can realize smooth braking.

However, in the current ePadal/one pedal, the acceleration, deceleration, braking and other operations are simultaneously carried out by using one pedal, the foot is always held, different forces are required to be mastered to control the vehicle, the ergonomics is not met, the learning cost of a user is high, and accidents are easily caused. Meanwhile, a brake pedal still needs to be added, and when emergency braking is needed, emergency braking is performed by stepping down. And is not a true single pedal.

Disclosure of Invention

In order to solve the problems, the invention provides a single-pedal control system and a control method thereof.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a single pedal control system comprising:

the environment acquisition unit is used for acquiring vehicle running parameters, the surrounding environment and physical information of a driver;

the pedal control unit is used for acquiring a pedal working state, wherein the pedal working state comprises a pedal working condition and a pedal opening degree under the current pedal working condition;

the calculation unit is used for analyzing the vehicle running parameters, the physical information and the pedal working state and sending out a driving action instruction;

and the execution unit is used for receiving the driving action command and controlling the vehicle to run and comprises a steering system, a power system and a braking system.

Further, the environment acquisition unit comprises a sensor, a camera, a radar and a GPS.

Further, the sensor includes:

an angle sensor for sensing a rotation angle of a vehicle steering wheel;

the speed sensor is used for acquiring the real-time running speed of the vehicle;

and the temperature sensor is used for measuring the real-time temperature of each part of the vehicle.

Further, the vehicle running parameters comprise energy information, vehicle speed, steering, real-time position and distance to a target place of the vehicle; the physical information of the surrounding environment includes roads, traffic signs, pedestrians, animals, motor vehicles, non-motor vehicles, trees, and buildings; the physical information of the driver includes a posture, a state, and an action of the driver.

Further, the pedal working conditions include a pedal stepping working condition, a pedal releasing working condition and a pedal maintaining working condition, the pedal stepping working condition indicates that the pedal opening at the current moment is smaller than the pedal opening at the previous moment, the pedal releasing working condition indicates that the pedal opening at the current moment is larger than the pedal opening at the previous moment, and the pedal maintaining working condition indicates that the pedal opening at the current moment is equal to the pedal opening at the previous moment.

Further, the driving action command comprises a steering operation command, a power operation command, a braking operation command and an energy recovery operation command.

Further, the steering system includes a steering wheel and a steering controller; the power system comprises an accelerator and an accelerator controller; the brake system includes a brake plate and a brake plate controller.

A single pedal control method comprising the steps of:

acquiring vehicle running parameters, the surrounding environment, physical information of a driver and a pedal working state;

generating a first vehicle control instruction according to vehicle driving parameters, wherein the vehicle driving parameters comprise one or more of energy information, vehicle speed, steering, real-time position and distance to a target place of a vehicle; generating a second vehicle control instruction according to a surrounding environment and physical information of the driver, the physical information of the surrounding environment including one or more of roads, traffic signs, pedestrians, animals, motor vehicles, non-motor vehicles, trees, and buildings, the physical information of the driver including one or more of a posture, a state, and an action of the driver; generating a third vehicle control instruction according to a pedal working state, wherein the pedal working state comprises a pedal working condition and a pedal opening under the current pedal working condition;

analyzing execution weights of the first vehicle control instruction, the second vehicle control instruction and the third vehicle control instruction;

sending out a driving action instruction according to the execution weight;

and controlling the vehicle to run according to the driving action command.

Furthermore, the execution weight is obtained according to the coincidence degree of the driving action commands sent when the first vehicle control command, the second vehicle control command and the third vehicle control command are respectively executed.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention simplifies the operation of the driver, does not need to switch between an accelerator pedal and a brake pedal frequently, only needs one pedal, and is a single pedal in the true sense.

2. The invention can prevent misoperation, for many drivers who practice, the frequently made mistake is to use the accelerator as the brake, finally the accident is caused, and the problem can be perfectly solved by a single pedal.

3. The invention is more energy-saving, and through energy recovery, the more the energy returned to the battery pack is, the less the friction braking loss is, and the lower the energy consumption of the automobile is.

Drawings

FIG. 1 is a schematic structural diagram of a single pedal control system according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an environment acquisition unit according to an embodiment of the present invention;

FIG. 3 is a diagram illustrating an exemplary embodiment of an execution unit;

FIG. 4 is a flowchart of a single pedal control method according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments are further described in detail.

In one aspect, embodiments of the present invention provide a single pedal control system, as shown in fig. 1-3, including: the device comprises an environment acquisition unit, a pedal control unit, a calculation unit and an execution unit; the environment acquisition unit is used for acquiring vehicle running parameters, the surrounding environment and physical information of a driver; the pedal control unit is used for acquiring a pedal working state, wherein the pedal working state comprises a pedal working condition and a pedal opening degree under the current pedal working condition; the calculation unit is used for analyzing the vehicle running parameters, the physical information and the pedal working state and sending out a driving action instruction; the execution unit is used for receiving the driving action command and controlling the vehicle to run, and comprises a steering system, a power system and a braking system.

The environment acquisition unit comprises a sensor, a camera, a radar and a GPS.

The sensor includes: an angle sensor for sensing a rotation angle of a vehicle steering wheel; the speed sensor is used for acquiring the real-time running speed of the vehicle; and the temperature sensor is used for measuring the real-time temperature of each part of the vehicle.

The vehicle running parameters comprise energy information, vehicle speed, steering, real-time position and distance from a target place of the vehicle; the physical information of the surrounding environment includes roads, traffic signs, pedestrians, animals, motor vehicles, non-motor vehicles, trees, and buildings; the physical information of the driver includes a posture, a state, and an action of the driver.

The pedal working conditions comprise a pedal treading working condition, a pedal releasing working condition and a pedal maintaining working condition, wherein the pedal treading working condition represents that the pedal opening at the current moment is smaller than the pedal opening at the last moment, the pedal releasing working condition represents that the pedal opening at the current moment is larger than the pedal opening at the last moment, and the pedal maintaining working condition represents that the pedal opening at the current moment is equal to the pedal opening at the last moment.

The driving action command comprises a steering operation command, a power operation command, a braking operation command and an energy recovery operation command.

The steering system comprises a steering wheel and a steering controller; the power system comprises an accelerator and an accelerator controller; the brake system includes a brake plate and a brake plate controller.

In another aspect, a single pedal control method, as shown in fig. 4, includes the steps of:

acquiring vehicle running parameters, the surrounding environment, physical information of a driver and a pedal working state;

generating a first vehicle control instruction according to vehicle driving parameters, wherein the vehicle driving parameters comprise one or more of energy information, vehicle speed, steering, real-time position and distance to a target place of a vehicle; generating a second vehicle control instruction according to a surrounding environment and physical information of the driver, the physical information of the surrounding environment including one or more of roads, traffic signs, pedestrians, animals, motor vehicles, non-motor vehicles, trees, and buildings, the physical information of the driver including one or more of a posture, a state, and an action of the driver; generating a third vehicle control instruction according to a pedal working state, wherein the pedal working state comprises a pedal working condition and a pedal opening under the current pedal working condition;

analyzing execution weights of the first vehicle control instruction, the second vehicle control instruction and the third vehicle control instruction;

sending out a driving action instruction according to the execution weight;

and controlling the vehicle to run according to the driving action command.

The execution weight is obtained according to the contact ratio of the driving action commands sent when the first vehicle control command, the second vehicle control command and the third vehicle control command are respectively executed.