CN110861623A - Pneumatic braking vehicle power safety control method and device - Google Patents
Pneumatic braking vehicle power safety control method and device Download PDFInfo
- Publication number
- CN110861623A CN110861623A CN201810982016.5A CN201810982016A CN110861623A CN 110861623 A CN110861623 A CN 110861623A CN 201810982016 A CN201810982016 A CN 201810982016A CN 110861623 A CN110861623 A CN 110861623A
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- vehicle
- brake
- pressure value
- air pressure
- lower limit
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Classifications
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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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
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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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
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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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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention relates to the technical field of vehicle braking, in particular to a power safety control method and device for a pneumatic braking vehicle. The device comprises a controller and a pressure sensor used for detecting the brake air pressure of a vehicle brake system, wherein the input end of the controller is connected with the pressure sensor, when the vehicle is started, the controller acquires the brake air pressure value of the vehicle brake system, when the brake air pressure value is judged to be smaller than the lower limit of a starting air pressure value, the vehicle brake system is controlled to be inflated, and the whole vehicle is controlled not to respond to a whole vehicle accelerator signal and/or a vehicle gear signal until the brake air pressure value is not smaller than the lower limit of the starting air pressure value, so that the power safety control of the air pressure brake vehicle is realized, and the problem that the brake lining is seriously abraded due to the fact that the power is still output to control the vehicle to.
Description
Technical Field
The invention relates to the technical field of vehicle braking, in particular to a power safety control method and device for a pneumatic braking vehicle.
Background
When the existing air brake vehicle is started, an instrument air pressure signal is lower than the highest air pressure set by a pressure sensor, an inflating pump starts to work, a driver observes the air pressure value of the instrument, an air pressure pointer reaches the starting air pressure of 0.6Mpa after 1min, an air brake valve can be released, and a gear is engaged to step on an accelerator for starting, so that the vehicle is started normally. However, when the air pressure value does not reach the starting air pressure of 0.6Mpa, namely the accelerator pedal is stepped on by starting to shift, the power output can cause the wheel to generate torque to wear a brake lining, and the service life of the brake is influenced.
Disclosure of Invention
The invention aims to provide a power safety control method and a power safety control device for a pneumatic braking vehicle, which are used for solving the problem that a brake lining is seriously abraded due to the fact that power is still output to control the vehicle to run when the braking air pressure of the vehicle is low.
In order to realize the power safety control of a pneumatic braking vehicle, the problem that the brake lining is seriously abraded because the power is still output to control the vehicle to run when the braking air pressure of the vehicle is low is solved. The invention provides a power safety control method for a pneumatic braking vehicle, which comprises a starting control strategy, wherein the starting control strategy comprises the following steps:
1) when the vehicle is started, obtaining a brake air pressure value of a vehicle brake system, and judging whether the brake air pressure value is smaller than a starting air pressure value lower limit or not;
2) and if so, controlling to inflate the vehicle brake system, and controlling not to respond to the whole vehicle accelerator signal and/or the vehicle gear signal until the brake air pressure value is not less than the lower limit of the starting air pressure value.
The control method has the advantages that the vehicle is controlled not to respond to starting control when the air pressure of the braking system is low, and the abrasion of the brake lining is effectively prevented.
Further, in order to ensure the safety of power output during the running of the vehicle and protect the brake lining from serious abrasion, the method also comprises a running control strategy, wherein the running control strategy comprises the following steps:
1) the method comprises the steps of acquiring a brake air pressure value of a vehicle brake system in real time during vehicle running, and judging whether the brake air pressure value is smaller than the lower limit of the running air pressure value or not in real time;
2) if yes, controlling the output of the whole vehicle limit power.
Further, in order to guarantee the braking safety of the air braking vehicle, the starting control strategy also acquires the state information of an inflating pump in a vehicle braking system, and when the inflating pump fails, the control does not respond to the whole vehicle accelerator signal and/or the vehicle gear signal.
Further, in order to prompt the driver to pay attention to the safety of vehicle starting, when the brake air pressure value is smaller than the lower limit of the starting air pressure value and/or the inflating pump is in fault, a brake fault alarm signal is output.
Further, in order to prompt the driver to pay attention to driving safety, when the brake air pressure value is smaller than the lower limit of the running air pressure value, a brake fault alarm signal is output.
The invention also provides a power safety control device of the air brake vehicle, which comprises a controller and a pressure sensor for detecting the brake air pressure of a vehicle brake system, wherein the input end of the controller is connected with the pressure sensor, when the vehicle is started, the controller acquires the brake air pressure value of the vehicle brake system, when the brake air pressure value is judged to be smaller than the lower limit of the starting air pressure value, the vehicle brake system is controlled to be inflated, and the whole vehicle is controlled not to respond to a whole vehicle accelerator signal and/or a vehicle gear signal until the brake air pressure value is not smaller than the lower limit of the starting air pressure value, so that the control of the vehicle not to respond to the starting control when the air pressure of the brake system is lower is effectively realized, and the abrasion of a brake.
Further, in order to ensure the safety of power output during the running of the vehicle and protect the brake lining from being seriously abraded, the controller acquires the brake air pressure value of a vehicle brake system in real time during the running of the vehicle, and controls the output of the whole vehicle limit power when the brake air pressure value is judged to be smaller than the lower limit of the running air pressure value in real time.
Further, in order to guarantee the braking safety of the air-pressure braking vehicle, when the vehicle is started, the controller also acquires the state information of an inflating pump in the vehicle braking system, and when the inflating pump breaks down, the whole vehicle power system is controlled not to respond to a whole vehicle accelerator signal and/or a vehicle gear signal.
Further, in order to prompt the driver to pay attention to the safety of vehicle starting, the output end of the controller is also used for being connected with a central control instrument, and when the brake air pressure value is smaller than the lower limit of the starting air pressure value and/or the inflation pump is in fault, the controller outputs a brake fault alarm signal to the central control instrument.
Further, in order to prompt the driver to pay attention to driving safety, the output end of the controller is also used for being connected with a central control instrument, and when the brake air pressure value is smaller than the lower limit of the driving air pressure value, the controller outputs a brake failure alarm signal to the central control instrument.
Drawings
FIG. 1 is a flow chart of a method of power safety control for a pneumatically braked vehicle.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The invention provides a power safety control method for a pneumatic braking vehicle, which comprises a starting control strategy and a driving control strategy as shown in figure 1, wherein the starting control strategy comprises the following steps:
1) and when the vehicle is started, obtaining the brake air pressure value of a vehicle brake system, and judging whether the brake air pressure value is smaller than the lower limit of the starting air pressure value.
The control method can be realized by a pneumatic braking vehicle power safety control device which comprises a controller and a pressure sensor for detecting the braking air pressure of a vehicle braking system, wherein the input end of the controller is connected with the pressure sensor, and the pressure sensor can be an existing air pressure sensor in the vehicle braking system. When the vehicle is started, the pressure sensor CAN be used for collecting the braking air pressure value in real time, and the braking air pressure value is communicated with the controller through a communication wire harness such as a CAN (controller area network) and the like, preferably, the controller is a whole vehicle controller, and the controller compares the braking air pressure value with the lower limit of the starting air pressure value.
2) And if so, controlling to inflate the vehicle brake system, and controlling not to respond to the whole vehicle accelerator signal and/or the vehicle gear signal until the brake air pressure value is not less than the lower limit of the starting air pressure value.
The brake system in the general air-pressure brake vehicle can be provided with a corresponding air-inflating device, the air-inflating device is an air-inflating pump, when the brake air pressure value is smaller than the lower limit of the starting air pressure value, the vehicle is not suitable to start at the moment, the vehicle brake system is inflated until the brake air pressure value is not smaller than the lower limit of the starting air pressure value, and meanwhile, in order to enable the vehicle not to start in the state, the whole vehicle is controlled not to respond to the whole vehicle throttle signal or the vehicle gear signal or not to respond to the whole vehicle throttle signal and the vehicle gear signal until the brake air pressure value is not smaller than the lower limit of the starting air pressure value.
The driving control strategy comprises the following steps:
1) and acquiring the brake air pressure value of a vehicle brake system in real time during the running of the vehicle, and judging whether the brake air pressure value is smaller than the lower limit of the running air pressure value or not in real time.
2) If yes, controlling the output of the whole vehicle limit power.
When the real-time brake air pressure value is smaller than the lower limit of the running air pressure value, the air brake of the vehicle starts to work, the friction lining starts to work to decelerate the vehicle, and the brake lining is seriously abraded if the vehicle is still controlled to run at the moment, so that the controller outputs a signal to control the whole vehicle to carry out power limiting output at the moment; and when the braking air pressure value is smaller than the lower limit of the running air pressure value, the controller outputs a braking fault alarm signal to the central control instrument to correspondingly prompt a driver. If the vehicle is a pure electric vehicle, the output power of the motor controller is controlled to be a set value, and the set value can be 0, so that the motor of the vehicle is prevented from continuously working, and the motor of the vehicle is prevented from continuously driving the vehicle to move forwards under the condition of braking. If the vehicle is a fuel vehicle, the controller can control the engine to reduce power output or control the clutch to separate and cut off the power of the whole vehicle. Meanwhile, in the process, the driver still does not know the information and continues to output the accelerator and shift the gear of the vehicle, and the controller receives the signals, but takes the signals as invalid signals and does not control corresponding actuating mechanisms to respond.
In addition, when the vehicle is started, the controller also acquires the state information of an inflating pump in a vehicle braking system, when the inflating pump fails, the failure of the braking system of the whole vehicle is indicated, and for driving safety, the power system of the whole vehicle is controlled not to respond to a throttle signal and/or a gear signal of the vehicle. When the brake air pressure value is smaller than the lower limit of the starting air pressure value or the inflation pump is in fault or the brake air pressure value is smaller than the lower limit of the starting air pressure value and the inflation pump is in fault simultaneously, the controller also outputs a brake fault alarm and prompts a driver through the instrument device.
The lower limit of the starting air pressure value can be 0.6MPa, and the lower limit of the driving air pressure value can be 0.4 MPa.
In addition, when the inflating pump is in failure and the running air pressure value is smaller than the lower limit of the running air pressure value, if the vehicle is a pure electric vehicle, the current vehicle speed of the vehicle is acquired through the existing vehicle speed signal acquisition unit of the vehicle, and when the vehicle speed is reduced to the set vehicle speed, the high-voltage power-down is controlled, and the vehicle is controlled not to start.
The present invention has been described in relation to particular embodiments thereof, but the invention is not limited to the described embodiments. In the thought given by the present invention, the technical means in the above embodiments are changed, replaced, modified in a manner that is easily imaginable to those skilled in the art, and the functions are basically the same as the corresponding technical means in the present invention, and the purpose of the invention is basically the same, so that the technical scheme formed by fine tuning the above embodiments still falls into the protection scope of the present invention.
Claims (10)
1. A method of pneumatically braking vehicle power safety control, comprising a launch control strategy, the launch control strategy comprising the steps of:
1) when the vehicle is started, obtaining a brake air pressure value of a vehicle brake system, and judging whether the brake air pressure value is smaller than a starting air pressure value lower limit or not;
2) and if so, controlling to inflate the vehicle brake system, and controlling not to respond to the whole vehicle accelerator signal and/or the vehicle gear signal until the brake air pressure value is not less than the lower limit of the starting air pressure value.
2. The pneumatic brake vehicle power safety control method of claim 1, further comprising a travel control strategy, the travel control strategy comprising the steps of:
1) the method comprises the steps of acquiring a brake air pressure value of a vehicle brake system in real time during vehicle running, and judging whether the brake air pressure value is smaller than the lower limit of the running air pressure value or not in real time;
2) if yes, controlling the output of the whole vehicle limit power.
3. The power safety control method for the air brake vehicle according to claim 1 or 2, characterized in that the start control strategy also acquires the state information of an inflating pump in the vehicle brake system, and when the inflating pump fails, the control does not respond to the throttle signal and/or the vehicle gear signal of the whole vehicle.
4. The power safety control method for air brake vehicles according to claim 3, characterized in that when the brake air pressure value is less than the lower limit of the starting air pressure value and/or the air pump is failed, a brake failure alarm signal is also output.
5. The power safety control method of a pneumatic brake vehicle according to claim 2, characterized in that a brake failure warning signal is also output when the brake air pressure value is less than the lower limit of the running air pressure value.
6. The utility model provides a pneumatic braking vehicle power safety control device, its characterized in that, includes the controller and is used for detecting the pressure sensor of vehicle braking system braking atmospheric pressure, the input of controller is connected pressure sensor, when the vehicle starts, the controller acquires vehicle braking system's braking atmospheric pressure value, judges when this braking atmospheric pressure value is less than the lower limit of starting atmospheric pressure value, and control is aerifyd vehicle braking system, and controls whole car and not respond whole car throttle signal and/or vehicle gear signal until the braking atmospheric pressure value is not less than the lower limit of starting atmospheric pressure value.
7. The power safety control device of a pneumatic brake vehicle as claimed in claim 6, wherein the controller obtains the brake air pressure value of the vehicle brake system in real time during the running of the vehicle, and controls the output of the vehicle limit power when the brake air pressure value is smaller than the lower limit of the running air pressure value.
8. The power safety control device for the air brake vehicle according to claim 6 or 7, characterized in that when the vehicle starts, the controller further obtains the state information of an inflating pump in the vehicle brake system, and when the inflating pump fails, the power system of the whole vehicle is controlled not to respond to a throttle signal and/or a gear signal of the vehicle.
9. The power safety control device of a pneumatic brake vehicle as claimed in claim 8, wherein the output end of the controller is further used for connecting a central control instrument, and when the brake air pressure value is smaller than the lower limit of the starting air pressure value and/or the inflation pump is in fault, the controller outputs a brake fault alarm signal to the central control instrument.
10. The power safety control device of a pneumatic brake vehicle as claimed in claim 7, wherein the output end of the controller is further used for connecting a central control instrument, and when the brake air pressure value is smaller than the lower limit of the running air pressure value, the controller outputs a brake failure alarm signal to the central control instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810982016.5A CN110861623A (en) | 2018-08-27 | 2018-08-27 | Pneumatic braking vehicle power safety control method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810982016.5A CN110861623A (en) | 2018-08-27 | 2018-08-27 | Pneumatic braking vehicle power safety control method and device |
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| Publication Number | Publication Date |
|---|---|
| CN110861623A true CN110861623A (en) | 2020-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810982016.5A Pending CN110861623A (en) | 2018-08-27 | 2018-08-27 | Pneumatic braking vehicle power safety control method and device |
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| CN (1) | CN110861623A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113771823A (en) * | 2021-09-02 | 2021-12-10 | 东风华神汽车有限公司 | Automobile brake monitoring system and application method thereof |
| CN114458586A (en) * | 2020-11-10 | 2022-05-10 | 陕西汽车集团有限责任公司 | Inflating pump control method |
| CN116461529A (en) * | 2023-06-19 | 2023-07-21 | 盛瑞传动股份有限公司 | Vermicular starting control method, device, equipment and computer readable storage medium |
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| DE4438017C2 (en) * | 1994-10-25 | 1996-10-31 | Bosch Gmbh Robert | Method and device for the electrical control or regulation of the brake system of a vehicle |
| GB2313746A (en) * | 1996-05-31 | 1997-12-03 | Bosch Gmbh Robert | System for overlaying information |
| DE10101178C1 (en) * | 2001-01-12 | 2002-08-08 | Audi Ag | Bremsenprüfstand |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458586A (en) * | 2020-11-10 | 2022-05-10 | 陕西汽车集团有限责任公司 | Inflating pump control method |
| CN113771823A (en) * | 2021-09-02 | 2021-12-10 | 东风华神汽车有限公司 | Automobile brake monitoring system and application method thereof |
| CN116461529A (en) * | 2023-06-19 | 2023-07-21 | 盛瑞传动股份有限公司 | Vermicular starting control method, device, equipment and computer readable storage medium |
| CN116461529B (en) * | 2023-06-19 | 2023-10-03 | 盛瑞传动股份有限公司 | Vermicular starting control method, device, equipment and computer readable storage medium |
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