CN112224194B - Vehicle environment parameter determination method - Google Patents
Vehicle environment parameter determination method Download PDFInfo
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- CN112224194B CN112224194B CN202010962541.8A CN202010962541A CN112224194B CN 112224194 B CN112224194 B CN 112224194B CN 202010962541 A CN202010962541 A CN 202010962541A CN 112224194 B CN112224194 B CN 112224194B
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- vacuum degree
- vacuum
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- atmospheric environment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0237—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems circuits concerning the atmospheric environment
Abstract
The invention discloses a vehicle environmental parameter determination method, which is applied to the field of vehicle operation control, wherein when a vehicle is in a non-braking state, an actual vacuum degree value of a vacuum booster is detected through a vacuum degree sensor; the electric control unit acquires specific information of the current vacuum degree according to the actual vacuum degree value of the vacuum booster detected by the vacuum degree sensor; and the electric control unit determines the actual atmospheric environment parameter corresponding to the current vacuum degree specific information according to the pre-calibration relation between the vacuum degree specific information and the atmospheric environment parameter. Thus eliminating the need to rely on an atmospheric pressure sensor to detect the ambient atmospheric pressure in which the vehicle is located.
Description
Technical Field
The invention belongs to the field of vehicle operation control, and particularly relates to a vehicle environment parameter determination method.
Background
The ambient air pressure changes after the vehicle travels to the plateau. Since the change of the ambient air pressure can affect the change of the performance of the automobile, the ambient air pressure of the vehicle needs to be detected to judge whether the vehicle enters the plateau area. In order to monitor the ambient pressure and enable the automobile to obtain better performance related to the environment, the prior art needs to separately add an ambient atmospheric pressure value sensor on the automobile, thereby increasing the manufacturing cost of the automobile.
Disclosure of Invention
In view of the above technical problems in the prior art, embodiments of the present invention provide a method for determining an environmental parameter of a vehicle, so as to determine an environmental pressure of the vehicle without additionally adding an atmospheric pressure sensor.
The vehicle comprises a vacuum degree sensor, a vacuum booster, a vacuum source and an electric control unit, wherein the vacuum degree sensor is connected with the vacuum booster, the vacuum degree sensor and the vacuum source are respectively connected with the electric control unit, and the method comprises the following steps: detecting an actual vacuum value of the vacuum booster by the vacuum degree sensor when the vehicle is in a non-braking state; the electric control unit acquires specific information of the current vacuum degree according to the actual vacuum degree value of the vacuum booster detected by the vacuum degree sensor; and the electric control unit determines the actual atmospheric environment parameter corresponding to the current vacuum degree specific information according to the pre-calibration relation between the vacuum degree specific information and the atmospheric environment parameter.
Optionally, the acquiring, by the electronic control unit, specific information of the current vacuum degree according to the actual vacuum degree value of the vacuum booster detected by the vacuum degree sensor includes:
and the electric control unit acquires the vacuum degree change information of the vacuum booster under the current atmospheric environment according to the actual vacuum degree value of the vacuum booster.
Optionally, the determining, according to a pre-calibration relationship between the vacuum degree specific information and the atmospheric environment parameter, an actual atmospheric environment parameter corresponding to the current vacuum degree specific information includes:
and the electric control unit determines the actual atmospheric environment parameters of the current atmospheric environment of the vehicle according to the pre-calibration relation and the vacuum degree change information, wherein the pre-calibration relation calibrates a relation curve of the vacuum degree of the vacuum booster changing along with time under different atmospheric environment parameters.
Optionally, the vacuum degree change information is actual change time of the vacuum degree of the vacuum booster changing in a target vacuum degree interval;
the electric control unit determines the actual atmospheric environment parameters of the current atmospheric environment of the vehicle according to the pre-calibration relation and the vacuum degree change information, and the method comprises the following steps:
and comparing the actual change time with a relation curve of the vacuum degree of the vacuum booster changing along with time under different atmospheric environment parameters to obtain an atmospheric environment parameter calibrated by the relation curve of the change time of the target vacuum degree interval and the actual change time, and taking the atmospheric environment parameter as the actual atmospheric environment parameter of the current atmospheric environment of the vehicle.
Optionally, the acquiring, by the electronic control unit, specific information of the current vacuum degree according to the actual vacuum degree value of the vacuum booster detected by the vacuum degree sensor includes:
and the electronic control unit acquires an actual vacuum degree maximum relative value which is reached by the vacuum degree of the vacuum booster along with time change under the current atmospheric environment according to the actual vacuum degree value of the vacuum booster detected by the vacuum degree sensor.
Optionally, the determining, by the electronic control unit, an actual atmospheric environment parameter corresponding to the current vacuum degree specific information according to a pre-calibrated relationship between the vacuum degree specific information and the atmospheric environment parameter includes:
and the electronic control unit determines the actual atmospheric environment parameter of the current atmospheric environment of the vehicle according to the pre-calibration relation and the actual maximum relative vacuum degree value, wherein the pre-calibration relation calibrates the maximum relative vacuum degree value which can be reached by the vacuum degree of the vacuum booster along with the time change under different atmospheric environment parameters.
Optionally, before the electronic control unit obtains the current vacuum degree specific information according to the actual vacuum degree value of the vacuum booster detected by the vacuum degree sensor, the method further includes:
the electronic control unit acquires the brake state identification information of the vehicle and judges whether the vehicle is in a non-brake state according to the brake state identification information;
wherein, the electronic control unit acquires the brake state identification information of the vehicle, including:
the electric control unit collects the on-off state of a brake switch of the vehicle and judges whether the vehicle is in a non-braking state or not according to the on-off state
The electronic control unit collects oil pressure of a brake system pipeline of the vehicle and judges whether the vehicle is in a non-braking state or not according to the oil pressure of the brake system pipeline.
Optionally, the acquiring, by the electronic control unit, specific information of the current vacuum degree according to the actual vacuum degree value of the vacuum booster detected by the vacuum degree sensor includes:
the electronic control unit identifies whether a vacuum source of the vehicle is in an on state;
if the vacuum source is in the on state, the electronic control unit executes the steps of: and acquiring specific information of the current vacuum degree according to the actual vacuum degree value of the vacuum booster detected by the vacuum degree sensor.
Optionally, the actual atmospheric environmental parameter includes: the altitude information and/or the ambient atmospheric pressure value of the vehicle at present.
Optionally, the method further comprises:
outputting the altitude information and/or the ambient barometric pressure value; and/or
Judging whether the vehicle is in a specific atmospheric environment or not according to the altitude information and/or the environmental atmospheric pressure value;
if so, adjusting the relevant parameters of the vehicle to be matched with the altitude information and/or the ambient atmospheric pressure value.
One or more technical solutions provided by the embodiments of the present invention at least achieve the following technical effects or advantages:
according to the embodiment of the invention, when a vehicle is in a non-braking state, the electric control unit acquires specific information of the current vacuum degree according to the actual vacuum degree value of the vacuum booster detected by the vacuum degree sensor; and the electric control unit determines the actual atmospheric environment parameter corresponding to the current vacuum degree specific information according to the pre-calibration relation between the vacuum degree specific information and the atmospheric environment parameter. Therefore, the atmospheric pressure sensor is not required to be relied on to detect the atmospheric pressure of the environment where the vehicle is located, so that the atmospheric pressure sensor used on the vehicle can be eliminated, and the manufacturing cost of the automobile is further reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of a vehicle environment parameter determining apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a vehicle environment parameter determination method according to an embodiment of the invention;
FIG. 3 shows the vacuum degree specific information under different atmospheric pressures and different altitudes.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a method for determining a vehicle environmental parameter, and referring to fig. 1, fig. 1 is a schematic diagram of a vehicle environmental parameter determining apparatus in an embodiment of the present invention, and the vehicle environmental parameter determining apparatus may be applied to a vehicle including at least a vacuum sensor 1, a vacuum booster 2, a vacuum source 3, and an electronic control unit 4. Wherein, vacuum degree sensor 1 is connected with vacuum booster 2, and vacuum degree sensor 1 and vacuum source 3 are connected with electric control unit 4 respectively. The vacuum source 3 is an electric vacuum pump or a mechanical pump.
Referring to fig. 1 and fig. 2, a method for determining environmental parameters of a vehicle according to an embodiment of the present invention includes the following steps:
s201, detecting an actual vacuum degree value of the vacuum booster through a vacuum degree sensor when the vehicle is in a non-braking state.
It should be noted that if the vehicle is in a braking state, the vacuum level sensor detects a vacuum level of the vacuum booster that is invalid and cannot be used as a data source for determining the atmospheric environment parameter. Therefore, the embodiment of the invention requires the actual vacuum degree value of the vacuum booster detected by the vacuum degree sensor when the vehicle is in a non-braking state. It should be noted that, what is detected by the vacuum degree sensor is a series of actual vacuum degree values that gradually change in the vacuum booster during one-time vacuum pumping process of the vacuum source.
S202, the electronic control unit acquires specific information of the current vacuum degree according to the actual vacuum degree value of the vacuum booster detected by the vacuum degree sensor.
If the vehicle is in a non-braking state, the vacuum source of the vehicle braking system has specificity in completing the vacuumizing process under different atmospheric environment pressures. Referring to fig. 3, the process of the vacuum level of the vacuum booster varying with time varies according to the ambient atmospheric pressure at different altitudes. Such as: the maximum relative value of the finally reached vacuum degrees is different, and the curve speed change rate of the vacuum degrees is also different.
The vacuum source is an electric vacuum pump or a mechanical pump, and the types of the required vacuum degree specific information are different. Specifically, the method comprises the following steps:
if the vacuum source is an electric vacuum pump, the obtained specific information of the current vacuum degree is specifically as follows: the vacuum booster vacuum degree change information under the current atmospheric environment, and step S202 specifically includes: and the electric control unit acquires the vacuum degree change information of the vacuum booster in the current atmospheric environment according to the actual vacuum degree value of the vacuum booster detected by the vacuum degree sensor. Wherein, vacuum booster vacuum degree change information under current atmospheric environment specifically indicates: and the relation curve of the change of the vacuum degree of the vacuum booster along with time in the process of finishing one-time vacuum pumping under the current atmospheric environment by the electric vacuum pump.
If the vacuum source is a mechanical pump, the maximum relative value of the vacuum degree finally reached by the vacuum degree of the vacuum booster along with the time change has specificity, and at the moment, the specific information of the current vacuum degree is as follows: the mechanical pump finishes one-time vacuum pumping process under the current atmospheric environment, and the vacuum degree of the vacuum booster finally reaches the maximum relative value of the vacuum degree along with the time change. The maximum relative value of the vacuum degree refers to the section P3 shown in fig. 3. Step S202 specifically is: and acquiring the maximum relative value of the actual vacuum degree finally reached by the vacuum booster along with the time change under the current atmospheric environment according to the actual vacuum degree value detected by the vacuum degree sensor.
Further, before the electronic control unit acquires the specific information of the current vacuum degree, the method for determining the vehicle environment parameters according to the embodiment of the present invention further includes: the electronic control unit acquires the brake state identification information of the vehicle, and judges whether the vehicle is in a non-brake state according to the brake state identification information.
Specifically, the braking state identification information may be an on-off state of a brake switch of the vehicle or a brake system line oil pressure of the vehicle. Based on this, there are two embodiments for determining whether the vehicle is in the non-braking state:
one embodiment is:
the electronic control unit collects the on-off state of a brake switch of the vehicle and judges whether the vehicle is in a non-braking state according to the collected on-off state, wherein the brake switch can be specifically a signal of a brake lamp switch arranged on a brake pedal, and the on-off state of the brake switch can be manually controlled by a user. In this embodiment, the brake switch 5 of the vehicle needs to be connected to the electronic control unit 4.
When a brake pedal is stepped on for braking, the oil pressure p of a brake pipeline of a vehicle brake system is more than 0; when the brake pedal is not stepped on currently, the brake line oil pressure p is equal to 0. Therefore, another embodiment of determining whether the vehicle is in a non-braking state may be: the electric control unit collects oil pressure of a brake system pipeline of the vehicle and judges whether the vehicle is in a non-braking state or not according to the oil pressure of the brake system pipeline. When the oil pressure signal of the brake system pipeline is greater than 0, the vehicle is judged to be in a braking state; and when the oil pressure signal of the brake system pipeline is 0, judging that the vehicle is in a non-braking state.
Further, after the vehicle is judged to be in a non-braking state, the electronic control unit identifies whether a vacuum source of the vehicle is in an opening state; and if the vacuum source is in an open state, the electronic control unit acquires the specific information of the current vacuum degree according to the actual vacuum degree value acquired by the vacuum degree sensor. Specifically, the electronic control unit collects working signals of the vacuum source and judges whether the working state of the vacuum source is an open state or not according to the collected working signals of the vacuum source.
S203, the electric control unit determines the actual atmospheric environment parameter corresponding to the current vacuum degree specific information according to the pre-calibration relation between the vacuum degree specific information and the atmospheric environment parameter.
Specifically, step S203 may specifically be: and determining the atmospheric environment parameters of the vacuum degree specific information matched with the current vacuum degree from the pre-calibration relation, and taking the atmospheric environment parameters as the actual atmospheric environment parameters of the atmospheric environment in which the vehicle is currently located.
If in step S202, the current vacuum degree specific information is vacuum degree change information corresponding to a vacuum process performed by the electric vacuum pump in the current atmospheric environment, and the vacuum degree of the vacuum booster changes with time, corresponding to: the pre-calibration relation is calibrated by a relation curve of the vacuum degree of the vacuum booster changing along with time under different atmospheric environment parameters. For example, referring to FIG. 3, the pre-calibrated relationship may be, but is not limited to, calibrating: a curve of the vacuum degree of the vacuum booster as a function of time at an altitude of 3000m, a curve of the vacuum degree of the vacuum booster as a function of time at an altitude of 4000m, and a curve of the vacuum degree of the vacuum booster as a function of time in plain areas. The relation curve of the vacuum degree corresponding to any altitude along with the change of time has uniqueness, and therefore, the vacuum degree has specificity.
Therefore, step S203 specifically includes, in response to the vacuum being originally an electric vacuum pump: and the electric control unit determines the actual atmospheric environment parameters of the vehicle in the current atmospheric environment according to the pre-calibration relation and the vacuum degree change information.
Specifically, the vacuum degree change information is compared with each relation curve in the pre-calibration relation, and the atmospheric environment parameter calibrated by the relation curve corresponding to the vacuum degree change information is determined and used as the actual atmospheric environment parameter of the current atmospheric environment of the vehicle.
In a specific implementation process, the vacuum degree change information may be relationship data of the change of the vacuum degree of the vacuum booster with time in the current atmospheric environment. Or in order to reduce the comparison complexity, the vacuum degree change information may be an actual change time during which the vacuum degree of the vacuum booster changes in the target vacuum degree interval. The specific implementation process of step 203 is as follows:
the electric control unit acquires the actual change time of the vacuum value of the vacuum booster in a target vacuum degree interval according to the actual vacuum value of the vacuum booster; and comparing the actual change time with a relation curve of the vacuum degree of the vacuum booster changing along with time under different atmospheric environment parameters to obtain an atmospheric environment parameter corresponding to the relation curve of the change time of the target vacuum degree interval and the actual change time, and taking the atmospheric environment parameter as the actual atmospheric environment parameter of the current atmospheric environment of the vehicle.
The target vacuum degree interval may be set according to actual requirements, and is not further limited for this reason.
For example, referring to the different atmospheric environment parameters illustrated in fig. 3, the variation time of the target vacuum degree interval P1-P2 is: the plain area is t2-t1, the altitude of 3000m is t5-t3, and the altitude of 4000m is t6-t 4. For example, in an area with an altitude of 3000m, the electronic control unit obtains the actual change time of the vacuum degree value of the vacuum booster in a target vacuum degree interval P1-P2 as delta t according to the actual vacuum degree value of the vacuum booster, compares the delta t with the relationship curve of the vacuum degree of the vacuum booster changing along with the time under different atmospheric environment parameters of the altitude of 3000m, the altitude of 4000m and a plain area respectively to obtain the change time t5-t3 of the relationship curve calibrated to the altitude of 3000m in the target vacuum degree interval, and matches the actual change time delta t, so that the atmospheric environment parameter calibrated to the altitude of 3000m is used as the actual atmospheric environment parameter of the atmospheric environment where the vehicle is currently located.
If the current vacuum degree specific information in step S202 is: the mechanical pump finishes one-time vacuum pumping process under the current atmospheric environment, and the vacuum degree of the vacuum booster reaches the actual maximum relative value of the vacuum degree along with the time change. Correspondingly, the following steps are carried out: the pre-calibration relation is the maximum relative value of the vacuum degree which can be reached by the calibrated vacuum booster when the vacuum degree under different atmospheric environmental parameters changes along with time. Step S203 specifically includes: and the electric control unit determines the actual atmospheric environment parameters of the current atmospheric environment of the vehicle according to the pre-calibrated relation and the maximum relative value of the actual vacuum degree.
Specifically, the actual maximum relative vacuum degree value is compared with each maximum relative vacuum degree value in a pre-calibration relation, and the atmospheric environment parameter corresponding to the maximum relative vacuum degree value which is the same as or has the minimum difference with the actual maximum relative vacuum degree value is obtained and serves as the actual atmospheric environment parameter of the current atmospheric environment of the vehicle.
In the implementation process, the actual atmospheric environment parameters include: altitude information and/or ambient barometric pressure values at which the vehicle is currently located.
Further, after determining the altitude information and/or the ambient atmospheric pressure value at which the vehicle is currently located, the altitude information and/or the ambient atmospheric pressure value are output.
Further, whether the vehicle is in a specific atmospheric environment or not can be judged according to the altitude information and/or the ambient atmospheric pressure value; if so, the relevant parameters for the vehicle are adjusted to match the altitude information and/or the ambient barometric pressure value.
Specifically, in an automobile brake system using an electric vacuum pump as a vacuum source, for example, after an automobile enters a plateau, an operating threshold value of the electric vacuum pump is adaptively adjusted with reference to an ambient atmospheric pressure value. For example: the automobile engine system can control the engine to correct the current inflation efficiency according to the ambient atmospheric pressure value, and control the engine to inject oil according to the corrected inflation efficiency.
The technical scheme is adopted to detect the ambient atmospheric pressure of the vehicle, so that the ambient atmospheric pressure of the vehicle does not need to be detected by an atmospheric pressure sensor, the atmospheric pressure sensor used on the vehicle can be cancelled, and the manufacturing cost of the vehicle is reduced.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A vehicle environmental parameter determination method, characterized in that the vehicle comprises a vacuum degree sensor, a vacuum booster, a vacuum source and an electronic control unit, wherein the vacuum degree sensor is connected with the vacuum booster, and the vacuum degree sensor and the vacuum source are respectively connected with the electronic control unit, the method comprises:
detecting an actual vacuum value of the vacuum booster by the vacuum degree sensor when the vehicle is in a non-braking state;
the electric control unit acquires specific information of the current vacuum degree according to the actual vacuum degree value of the vacuum booster detected by the vacuum degree sensor; the electric control unit acquires specific information of the current vacuum degree according to the actual vacuum degree value of the vacuum booster detected by the vacuum degree sensor, and the specific information comprises the following steps: the electronic control unit acquires vacuum degree change information of the vacuum booster in the current atmospheric environment according to the actual vacuum degree value of the vacuum booster; the vacuum degree change information is actual change time of the vacuum degree of the vacuum booster changing in a target vacuum degree interval;
the electric control unit determines actual atmospheric environment parameters corresponding to the current vacuum degree specific information according to a pre-calibration relation between the vacuum degree specific information and the atmospheric environment parameters; the determining the actual atmospheric environment parameter corresponding to the current vacuum degree specific information according to the pre-calibration relation between the vacuum degree specific information and the atmospheric environment parameter includes: the electric control unit determines actual atmospheric environment parameters of the current atmospheric environment of the vehicle according to the pre-calibration relation and the vacuum degree change information, wherein the pre-calibration relation calibrates a relation curve of the vacuum degree of the vacuum booster changing along with time under different atmospheric environment parameters; comparing the actual change time with a relation curve of the vacuum degree of the vacuum booster changing along with time under different atmospheric environment parameters to obtain an atmospheric environment parameter calibrated by the relation curve of the change time of a target vacuum degree interval conforming to the actual change time, and taking the atmospheric environment parameter as the actual atmospheric environment parameter of the current atmospheric environment of the vehicle;
the electric control unit acquires specific information of the current vacuum degree according to the actual vacuum degree value of the vacuum booster detected by the vacuum degree sensor, and the specific information comprises the following steps:
and the electronic control unit acquires an actual vacuum degree maximum relative value which is reached by the vacuum degree of the vacuum booster along with time change under the current atmospheric environment according to the actual vacuum degree value of the vacuum booster detected by the vacuum degree sensor.
2. The method of claim 1, wherein the determining, by the electronic control unit, the actual atmospheric environment parameter corresponding to the current vacuum degree specific information according to the pre-calibrated relationship between the vacuum degree specific information and the atmospheric environment parameter comprises:
and the electronic control unit determines the actual atmospheric environment parameter of the current atmospheric environment of the vehicle according to the pre-calibration relation and the actual maximum relative vacuum degree value, wherein the pre-calibration relation calibrates the maximum relative vacuum degree value which can be reached by the vacuum degree of the vacuum booster along with the time change under different atmospheric environment parameters.
3. The method of claim 1,
before the electric control unit acquires the specific information of the current vacuum degree according to the actual vacuum degree value of the vacuum booster detected by the vacuum degree sensor, the method further comprises the following steps:
the electronic control unit acquires the brake state identification information of the vehicle and judges whether the vehicle is in a non-brake state according to the brake state identification information;
wherein, the electronic control unit acquires the brake state identification information of the vehicle, including:
the electric control unit collects the on-off state of a brake switch of the vehicle and judges whether the vehicle is in a non-braking state or not according to the on-off state
The electronic control unit collects oil pressure of a brake system pipeline of the vehicle and judges whether the vehicle is in a non-braking state or not according to the oil pressure of the brake system pipeline.
4. The method according to claim 1 or 3, wherein the electronic control unit obtains current vacuum level specific information based on the actual vacuum level of the vacuum booster detected by the vacuum level sensor, comprising:
the electronic control unit identifies whether a vacuum source of the vehicle is in an on state;
if the vacuum source is in the open state, the electronic control unit executes the following steps: and acquiring specific information of the current vacuum degree according to the actual vacuum degree value of the vacuum booster detected by the vacuum degree sensor.
5. The method of claim 1, wherein the actual atmospheric environmental parameters comprise: the altitude information and/or the ambient atmospheric pressure value of the vehicle at present.
6. The method of claim 5, wherein the method further comprises:
outputting the altitude information and/or the ambient barometric pressure value; and/or
Judging whether the vehicle is in a specific atmospheric environment or not according to the altitude information and/or the environmental atmospheric pressure value;
if so, adjusting the relevant parameters of the vehicle to be matched with the altitude information and/or the ambient atmospheric pressure value.
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| GB2445447A (en) * | 2007-01-08 | 2008-07-09 | Ford Global Tech Llc | A method and system for providing brake boost in a hybrid moto vehicle |
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| GB2445447A (en) * | 2007-01-08 | 2008-07-09 | Ford Global Tech Llc | A method and system for providing brake boost in a hybrid moto vehicle |
| CN101767581A (en) * | 2008-12-30 | 2010-07-07 | 比亚迪股份有限公司 | Vacuum assisted brake system, control method thereof, and vehicle comprising vacuum assisted brake system |
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