阅读说明：本技术 一种车辆驾驶辅助方法及系统 (Vehicle driving assisting method and system ) 是由 张振华 郑召启 郝传新 刘剑锋 于 2021-07-21 设计创作，主要内容包括：本发明属于车辆技术领域,具体涉及一种车辆驾驶辅助方法及系统,包括以下步骤：获取车辆的当前位置路谱信息和车辆位置信息；判断车辆位置信息是否准确；根据车辆位置信息准确的结果,提取车辆行驶中多个位置的当前位置路谱信息；根据多个位置的当前位置路谱信息提取道路路谱信息,根据车辆工况参数计算车辆载荷信息；根据道路路谱信息和车辆载荷信息,切换预存车辆电子托管数据。该方法通过电子托管路谱数据库、GPS、载荷计算模型与标定模型,结合车辆载荷,进行科学的比对监测,保证了监测手段有效准确,根据判定结果匹配最合理的油门MAP,从而实现车辆经济性和动力性最优。(The invention belongs to the technical field of vehicles, and particularly relates to a vehicle driving assistance method and system, which comprises the following steps: acquiring road spectrum information of the current position of the vehicle and vehicle position information; judging whether the vehicle position information is accurate or not; extracting current position road spectrum information of a plurality of positions in the running process of the vehicle according to the accurate result of the vehicle position information; extracting road spectrum information according to the road spectrum information of the current positions of the plurality of positions, and calculating vehicle load information according to vehicle working condition parameters; and switching and pre-storing vehicle electronic hosting data according to the road spectrum information and the vehicle load information. The method carries out scientific comparison monitoring by combining the electronic pipeline spectrum database, the GPS, the load calculation model and the calibration model and the vehicle load, ensures that the monitoring means is effective and accurate, and matches the most reasonable accelerator MAP according to the judgment result, thereby realizing the optimal economy and dynamic performance of the vehicle.)

1. A vehicle driving assist method characterized by comprising the steps of:

acquiring road spectrum information of the current position of the vehicle and vehicle position information;

judging whether the vehicle position information is accurate or not;

extracting current position road spectrum information of a plurality of positions in the running process of the vehicle according to the accuracy of the position information of the vehicle;

extracting road spectrum information according to the road spectrum information of the current positions of the plurality of positions, acquiring working condition parameters of the vehicle and calculating vehicle load information;

and switching and pre-storing vehicle electronic hosting data according to the road spectrum information and the vehicle load information.

2. The vehicle driving assist method recited in claim 1, wherein the current location road spectrum information includes an altitude, a longitude, a latitude, a gradient, and a traffic flow of an electronic road spectrum database, and the vehicle location information includes an altitude, a longitude, and a latitude of an onboard GPS.

3. The vehicular drive assist method according to claim 2, characterized in that the determining whether the vehicle position information is accurate includes:

calculating a quotient value of the road spectrum information of the current position and the vehicle position information;

acquiring a preset quotient value;

and judging that the vehicle position information is accurate according to the condition that the quotient value is less than or equal to the preset quotient value.

4. The vehicle driving assist method according to claim 1, wherein the extracting current-position road spectrum information of a plurality of positions in which the vehicle is traveling, accurate in accordance with the vehicle position information, includes:

acquiring the real-time speed and the preset speed of the vehicle according to the accuracy of the position information of the vehicle;

and extracting the road spectrum information of the current position for multiple times according to a preset time interval according to the condition that the real-time speed is greater than the preset speed.

5. The vehicle driving assist method of claim 1, wherein the vehicle operating condition parameters include an engine torque value, a rotational speed value, a vehicle speed value, and a grade value.

6. The vehicle driving assist method of claim 1, wherein the pre-stored vehicle electronic escrow data includes throttle MAP, engine performance data, emissions data, and shift logic.

7. The vehicle driving assist method according to claim 1, wherein the switching pre-stored vehicle electronic hosting data according to the road spectrum information and the vehicle load information includes:

judging whether pre-stored vehicle electronic hosting data needs to be switched or not according to the road spectrum information and the vehicle load information;

and switching the pre-stored electronic hosting data according to the requirement, and switching the pre-stored vehicle electronic hosting data.

8. A vehicle driving assist system for executing the vehicle driving assist method according to any one of claims 1 to 7, characterized by comprising:

an accelerator pedal;

the road spectrum module is used for storing road spectrum information;

the GPS module is used for collecting vehicle position information;

the control module is respectively electrically connected with the road spectrum module, the GPS module and the accelerator pedal, and is used for receiving or extracting data of the road spectrum module and the GPS module, analyzing the data and controlling the accelerator pedal according to an analysis result.

9. The vehicle assistant driving system according to claim 8, further comprising an engine parameter sensor group, an accelerator pedal sensor and a vehicle speed sensor, wherein the engine parameter sensor group, the accelerator pedal sensor and the vehicle speed sensor are respectively connected with the control module, the engine parameter sensor group is used for engine parameter signals, the accelerator pedal sensor is used for collecting accelerator pedal position signals, and the vehicle speed sensor is used for collecting vehicle running speed signals.

10. The vehicle assisted driving system of claim 8, further comprising an ECU, the control module being integrated in the ECU.

Technical Field

The invention belongs to the technical field of vehicles, and particularly relates to a vehicle driving assistance method and system.

Background

This section provides background information related to the present disclosure only and is not necessarily prior art.

The existing vehicle engine cannot automatically identify a vehicle running road spectrum and adjust an accelerator MAP strategy, and the calibration of the vehicle accelerator is not matched with the actual using working condition, so that the vehicle cannot give consideration to both economy and dynamic property under the specific working condition.

Disclosure of Invention

The invention aims to at least solve the problem that the vehicle in the prior art cannot give consideration to both economy and dynamic property, and the aim is realized by the following technical scheme:

a first aspect of the invention provides a vehicle driving assist method including the steps of:

acquiring road spectrum information of the current position of the vehicle and vehicle position information;

judging whether the vehicle position information is accurate or not;

extracting current position road spectrum information of a plurality of positions in the running process of the vehicle according to the accuracy of the position information of the vehicle;

extracting road spectrum information according to the road spectrum information of the current positions of the plurality of positions, acquiring working condition parameters of the vehicle and calculating vehicle load information;

and switching and pre-storing vehicle electronic hosting data according to the road spectrum information and the vehicle load information.

The vehicle driving assisting method provided by the invention monitors the vehicle driving in real time and confirms an accurate driving route by connecting the road spectrum database and the GPS, extracts road spectrum information according to the driving route, combines vehicle load information calculated by a load calculation model and a calibration model, and then matches the most reasonable electronic hosting data such as an accelerator MAP, engine performance data, emission data, gear shifting logic and the like according to preset logic to assist the vehicle driving, thereby realizing the optimal vehicle economy and dynamic performance.

In addition, according to the driving assistance method for a vehicle of the present invention, there may be additional technical features as follows:

in some embodiments of the invention, the current location road spectrum information comprises altitude, longitude, latitude, grade and traffic flow of an electronically hosted road spectrum database, and the vehicle location information comprises altitude, longitude and latitude of an onboard GPS.

In some embodiments of the present invention, the determining whether the vehicle position information is accurate includes:

calculating a quotient value of the road spectrum information of the current position and the vehicle position information;

acquiring a preset quotient value;

and judging that the vehicle position information is accurate according to the condition that the quotient value is less than or equal to the preset quotient value.

In some embodiments of the present invention, the extracting current position road spectrum information of a plurality of positions in the vehicle driving process according to the accuracy of the vehicle position information includes:

acquiring the real-time speed and the preset speed of the vehicle according to the accuracy of the position information of the vehicle;

and extracting the road spectrum information of the current position for multiple times according to a preset time interval according to the condition that the real-time vehicle speed is greater than the preset vehicle speed.

In some embodiments of the invention, the vehicle operating condition parameters include an engine torque value, a rotational speed value, a vehicle speed value, and a grade value.

In some embodiments of the invention, the pre-stored vehicle electronic escrow data includes throttle MAP, engine performance data, emissions data, and shift logic.

In some embodiments of the present invention, the switching pre-stored vehicle electronic hosting data according to the road spectrum information and the vehicle load information comprises:

judging whether pre-stored vehicle electronic hosting data needs to be switched or not according to the road spectrum information and the vehicle load information;

and switching the pre-stored electronic hosting data according to the requirement, and switching the pre-stored vehicle electronic hosting data.

A second aspect of the invention proposes a vehicle driving assistance system for executing the vehicle driving assistance method proposed by the first aspect of the invention, including:

an accelerator pedal;

the road spectrum module is used for storing road spectrum information;

the GPS module is used for collecting vehicle position information;

the control module is respectively electrically connected with the road spectrum module, the GPS module and the accelerator pedal, and is used for receiving or extracting data of the road spectrum module and the GPS module, analyzing the data and controlling the accelerator pedal according to an analysis result.

The vehicle driving assistance system according to the second aspect of the present invention has the same advantageous effects as the vehicle driving assistance method according to the first aspect of the present invention, and details thereof are not described herein.

In some embodiments of the present invention, the vehicle driving assistance system further includes an engine parameter sensor group, an accelerator pedal sensor and a vehicle speed sensor, the engine parameter sensor group, the accelerator pedal sensor and the vehicle speed sensor are respectively electrically connected to the control module, the engine parameter sensor group is used for engine parameter signals, the accelerator pedal sensor is used for collecting accelerator pedal position signals, and the vehicle speed sensor is used for collecting vehicle driving speed signals.

In some embodiments of the invention, the vehicle assisted driving system further comprises an ECU, the control module being integrated in the ECU.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:

fig. 1 schematically shows a flowchart of a driving assistance method for vehicle according to an embodiment of the present invention.

Fig. 2 schematically shows a structural schematic diagram of a driving assistance system for vehicle according to an embodiment of the present invention.

The reference symbols in the drawings denote the following:

10: control module, 11: road spectrum module, 12: GPS module, 13: accelerator pedal, 101-105: steps of a vehicle driving assistance method.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, 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 is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, an element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "inner", "side", "lower", "below", "upper", "over", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1 to 2, a first aspect of the present invention proposes a vehicle driving assist method including the steps of:

step 101: acquiring road spectrum information of the current position of the vehicle and vehicle position information;

step 102: judging whether the vehicle position information is accurate or not;

step 103: extracting the road spectrum information of the current positions of a plurality of positions in the running process of the vehicle according to the accuracy of the position information of the vehicle;

step 104: extracting road spectrum information according to the road spectrum information of the current positions of the plurality of positions, acquiring working condition parameters of the vehicle and calculating vehicle load information;

step 105: and switching and pre-storing vehicle electronic hosting data according to the road spectrum information and the vehicle load information.

It should be noted that the method may be executed by an on-board ECU (Electronic Control Unit). The current road spectrum information may be provided by a vehicle-mounted road spectrum database or a remote road spectrum database, and the vehicle position information is preferably provided by a vehicle-mounted GPS (Global Positioning System). And combining the current position road spectrum information groups of the plurality of positions, matching the current position road spectrum information groups with the road spectrum information in the database, and extracting the road spectrum information with the highest correlation degree in the database. A vehicle-mounted control system such as an ECU is generally provided with a real-time vehicle weight measuring system, and vehicle load is calculated according to the real-time working condition of an engine, the vehicle speed gradient and the like. In addition, a plurality of electronic hosting data such as accelerator MAP, engine performance data, emission data and gear shifting logic are stored in the ECU, and the ECU selects the optimal electronic hosting data such as the accelerator MAP according to road spectrum information and vehicle load information, thereby considering both economy and power performance and assisting vehicle driving.

The vehicle driving assisting method provided by the invention monitors the vehicle driving in real time and confirms an accurate driving route by connecting the road spectrum database and the GPS, extracts road spectrum information according to the driving route, combines vehicle load information calculated by a load calculation model and a calibration model, and then matches the most reasonable electronic hosting data such as an accelerator MAP, engine performance data, emission data, gear shifting logic and the like according to preset logic to assist the vehicle driving, thereby realizing the optimal vehicle economy and dynamic performance.

In some embodiments of the present invention, the current location road spectrum information includes an altitude, a longitude, a latitude, a gradient, and a traffic flow of the electronic toweling-road spectrum database, and the vehicle location information includes an altitude, a longitude, and a latitude of the onboard GPS.

In some embodiments of the present invention, determining whether the vehicle position information is accurate comprises:

calculating a quotient value of the road spectrum information of the current position and the vehicle position information;

acquiring a preset quotient value;

and judging that the vehicle position information is accurate according to the result that the quotient value is less than or equal to the preset quotient value.

It can be understood that a preset quotient value can be preset, and when the quotient obtained by dividing the current position road spectrum information by the vehicle position information is smaller than the preset quotient value, it indicates that the deviation between the vehicle position information and the actual deviation is small, and it can be determined that the vehicle position information is accurate.

In some embodiments of the present invention, extracting the current position road spectrum information of a plurality of positions in the driving of the vehicle according to the accuracy of the vehicle position information comprises:

acquiring the real-time speed and the preset speed of the vehicle according to the accuracy of the position information of the vehicle;

and extracting the road spectrum information of the current position for multiple times according to a preset time interval according to the condition that the real-time vehicle speed is greater than the preset vehicle speed.

For example, in the case of a vehicle speed > 10km/h at time intervals of 10s, d1, d2, d3, d4 and d5 … d20 are sequentially taken for 20 points.

In some embodiments of the invention, the vehicle condition parameters include an engine torque value, a rotational speed value, a vehicle speed value and a grade value, and the vehicle-mounted real-time vehicle weight measurement system calculates the vehicle load according to the vehicle condition parameters.

In some embodiments of the invention, the pre-stored vehicle electronic hosting data comprises an accelerator MAP, engine performance data, emission data and a gear shifting logic, the pre-stored vehicle electronic hosting data is preset and stored in the ECU, and the vehicle selects a proper MAP according to road spectrum information and vehicle load information, so that economy and dynamics are considered when the vehicle runs.

In some embodiments of the present invention, switching the pre-stored vehicle electronic hosting data according to the road spectrum information and the vehicle load information comprises:

judging whether pre-stored vehicle electronic hosting data needs to be switched or not according to the road spectrum information and the vehicle load information;

and switching the result of pre-stored electronic hosting data according to the requirement, and switching the pre-stored vehicle electronic hosting data.

A second aspect of the invention proposes a vehicle driving assistance system for executing the vehicle driving assistance method proposed by the first aspect of the invention, including:

an accelerator pedal 13;

the road spectrum module 12, the road spectrum module 12 is used for storing the road spectrum information;

the GPS module 11, the GPS module 11 is used for collecting the vehicle position information;

the control module 10 is electrically connected with the road spectrum module 12, the GPS module 11 and the accelerator pedal 13 respectively, and the control module 10 is used for receiving or extracting data of the road spectrum module 12 and the GPS module 11, analyzing the data and controlling the accelerator pedal 13 according to an analysis result.

The vehicle driving assistance system according to the second aspect of the present invention has the same advantageous effects as the vehicle driving assistance method according to the first aspect of the present invention, and details thereof are not described herein.

In some embodiments of the present invention, the vehicle driving assistance system further includes an engine parameter sensor group, an accelerator pedal sensor and a vehicle speed sensor, the engine parameter sensor group, the accelerator pedal sensor and the vehicle speed sensor are respectively electrically connected to the control unit, the engine parameter sensor group is used for engine parameter signals, the accelerator pedal sensor is used for acquiring position signals of the accelerator pedal 13, and the vehicle speed sensor is used for acquiring vehicle driving speed signals. The running parameters of the vehicle are collected through a plurality of sensors, so that the ECU can analyze the running state of the vehicle conveniently.

In some embodiments of the invention, the vehicle assisted driving system further comprises an ECU in which the control module 10 is integrated, making the arrangement more compact.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.