WO2018113749A1

WO2018113749A1 - Vehicle safety running control system, control device and control method

Info

Publication number: WO2018113749A1
Application number: PCT/CN2017/117797
Authority: WO
Inventors: 朱光海; 彭金雷; 王炜斌; 杨学青; 郭潇然; 苏常军; 范文旭; 李雪莲
Original assignee: 郑州宇通客车股份有限公司
Priority date: 2016-12-23
Filing date: 2017-12-21
Publication date: 2018-06-28
Also published as: CN108237915A

Abstract

A vehicle safety running control system, control device and control method. The control system comprises a control device a vehicle braking system. The control device comprises a control module, a vehicle door state detection module, an accelerator signal generation module, a vehicle speed measurement module. The control module is connected to the vehicle door state detection module, the vehicle speed measurement module, and the accelerator signal generation module for sampling, and is connected to the vehicle braking system for controlling same. When the speed of a vehicle is 0, if the vehicle door state detection module detects that a vehicle door is in an open state, the control module controls the vehicle to brake. In a braking state of the vehicle, even though a driver outputs an accelerator signal due to misoperation, the vehicle is not released from braking, and thus does not travel, so that the running safety of the vehicle is improved, an accident caused by the misoperation of the vehicle is avoided, and personal safety of the driver and passengers is ensured.

Description

Vehicle safety operation control system, control device and control method

Technical field

The invention relates to a vehicle safety operation control system, a control device and a control method, and belongs to the technical field of vehicle safety operation.

Background technique

Pure electric buses are more and more popular in the market because of their advantages of energy saving and environmental noise. As an important part of urban public transportation, buses have long driving time, large passenger capacity and constant stoppage. Stop sign and other features. In this mode of operation, the brake operation occupies a large proportion in the driver's driving operation, and the operation intensity is large. Therefore, an auxiliary brake system that can be applied to the city bus-specific operation mode is needed to optimize the driver's brake or hand brake operation. To reduce the driver's driving intensity and maximize the safety of vehicle operation.

At present, most bus brakes generally adopt two brake methods: brake pedal and hand brake. When the vehicle stops for a short time, such as waiting for traffic lights or passengers at the bus stop to get on and off, the driver often needs to step on the brake pedal or hold it for a long time. Handbrakes are used to ensure the stability of the vehicle, and in some cities, the working conditions are relatively congested. More frequent parking stops make the driver more powerful. And when the vehicle is in the braking state, if the driver misuses and causes the vehicle to drive, it will bring a great safety risk.

Summary of the invention

The object of the present invention is to provide a vehicle safety operation control system, a control device and a control method for solving the problem that a vehicle poses a large safety risk due to misoperation in a braking state.

To achieve the above object, the present invention provides a vehicle safety operation control system including a control module, a door state detection module, a throttle signal generation module, a vehicle speed detection module, and a vehicle brake system, wherein the control module samples and connects the door state detection The module, the vehicle speed detecting module and the throttle signal generating module control the connection to the vehicle brake system.

Further, the control device further includes a parking brake switch, and the control module samples and connects the parking brake switch.

Further, the vehicle brake system includes a wheel brake portion and a drive motor brake portion, the wheel brake portion including a brake controller and a brake device for braking the wheel, the drive motor brake portion To drive the motor controller, the brake controller controls the connection of brakes, and the control module connects the brake controller and the drive motor controller.

Further, the control device further includes a brake function release switch, and the control module samples and connects the brake function release switch.

The invention also provides a vehicle safety operation control device, comprising a control module, a door state detection module, a throttle signal generation module and a vehicle speed detection module, wherein the control module samples and connects the door state detection module, the vehicle speed detection module and the throttle signal generation A module having a control signal output port for controlling a brake system connected to the vehicle.

The present invention also provides a vehicle safety operation control method dedicated to the above vehicle safety operation control system. When the vehicle speed is 0, if the door is in an open state, the vehicle brake is controlled, and even if there is a throttle signal, the control module does not Response; the control module responds to the throttle signal only after the door is closed.

The vehicle speed detecting module is configured to detect the speed of the vehicle. When the speed of the vehicle is 0, if the door detected by the door state detecting module is in an open state, then the control module controls the vehicle braking and no longer responds to the throttle signal generating module, even if At this time, the throttle signal generating module outputs a certain throttle signal, and the control module does not release the brake. During the braking state of the vehicle, even if the driver outputs a certain throttle signal due to misoperation, the vehicle will not release the brake, and will not walk more, which improves the safe operation of the vehicle and avoids the safety accident caused by the malfunction of the vehicle. To ensure the personal safety of drivers and passengers. Moreover, only after the door is closed, the control module responds to the throttle signal output by the accelerator pedal. Through this control mode, the safety of the vehicle operation can be further improved, and the safety of the driver and the passenger is ensured.

Further, the control method further relates to a brake request signal issued by the parking brake switch. When the vehicle speed is 0, if the door is open and/or the parking brake switch is opened, the vehicle brake is controlled; only the door is at When the state is off and the parking brake switch is turned off, the control module responds to the throttle signal;

The parking brake switch is open to indicate that the parking brake switch issues a brake request, and the parking brake switch is closed, that is, the parking brake switch does not issue a brake request.

Further, the throttle signal responded by the control module is a throttle signal that satisfies a certain condition, and the certain condition is that the start time of the throttle signal is sent later than the time when the door is turned off.

DRAWINGS

1 is a schematic structural view of Embodiment 1 of a vehicle safety operation control system;

2 is a schematic structural view of Embodiment 2 of a vehicle safety operation control system;

3 is a flow chart of vehicle safety operation control in Embodiment 2 of the vehicle safety operation control system.

detailed description

The vehicle safety operation control system and the control device provided by the invention are used for controlling the safe operation of the vehicle, and the application occasions are wide. The background technology is only used to introduce the defects of the prior art. Therefore, the control device is not only suitable for pure Electric vehicles can also be used in other types of vehicles, such as hybrid vehicles, and traditional power vehicles, and the types of specific vehicles are not limited. The following is based on pure electric buses, and the present invention is further detailed with reference to the accompanying drawings. instruction of.

Control system embodiment 1

In this embodiment, the vehicle safety operation control system includes a vehicle safety operation control device and a vehicle brake system, wherein the vehicle safety operation control device includes a control module, a door state detection module, a throttle signal generation module, and a vehicle speed detection module.

The control module may be a specially-designed control chip, such as a single-chip microcomputer, or a control device of the vehicle itself, such as a vehicle controller HCU. In this embodiment, the control module takes the vehicle controller HCU as an example; The detecting module is used for detecting the opening or closing state of the door, and can also be a passenger door sensor; the vehicle speed detecting module is used for detecting the speed information of the vehicle, and the detected object can be a driving motor, and the speed of the vehicle can be directly obtained by detecting the rotating speed of the driving motor. In the present embodiment, the vehicle speed detecting module is a driving motor speed detecting module; the throttle signal generating module is a device for generating a throttle signal, and is generally used in a vehicle. The device for generating the throttle signal is the accelerator pedal. Then, the throttle signal generating module in this embodiment is the accelerator pedal, but other devices having similar or identical functions are not excluded.

Since each component in the control device is a conventional device, the components themselves will not be described in detail in this embodiment.

As shown in Figure 1, the vehicle controller HCU samples and connects the passenger door sensor, the accelerator pedal and the drive motor speed detection module to control the connection of the vehicle brake system.

The present embodiment provides a specific embodiment of a vehicle brake system. Since the vehicle is provided with a vehicle brake system, it is a conventional technique, and therefore, the present invention is not limited to the brake system of the embodiment. Specific structure. Due to the popularity of pure electric buses, EBS (Electric Braking System) is also widely used in pure electric vehicles. Therefore, the braking system in the present invention may also be EBS.

As shown in FIG. 1, the vehicle brake system includes a wheel brake portion and a drive motor brake portion, wherein the wheel brake portion includes a brake controller and a brake device for braking the wheel, and the brake controller can be The commonly used control chip, the brake controller controls the connection of the brake device, and the brake device is used to brake the wheel. At present, more pneumatic brakes are used. The brake part of the drive motor is the drive motor controller. Since the brake controller, the brake device and the drive motor controller are also conventional techniques, the three parts will not be described in detail in this embodiment. The vehicle controller HCU is connected to the brake controller and the drive motor controller, and is capable of outputting corresponding control signals to the two controllers.

The passenger door sensor, the accelerator pedal and the driving motor speed detecting module respectively send the collected data information to the vehicle controller HCU, and the vehicle controller HCU processes and analyzes the received data, and the analysis process is as follows:

The vehicle controller HCU judges according to the vehicle speed information transmitted by the driving motor speed detecting module. When the speed of the vehicle is 0, that is, when the vehicle is in the parking state, if the vehicle controller determines that the door is in accordance with the received door state information When the state is turned on, the vehicle controller HCU controls the vehicle to enter the auxiliary braking mode, and outputs a Haltbrake command to the brake controller, and the brake controller controls the brake device according to the Haltbrake command to apply air brake to the wheel; meanwhile, the vehicle The controller HCU sends a standby command to the drive motor controller to cut off the drive torque. The braking of the vehicle is achieved by the above two controls. After that, even if the driver outputs a certain throttle signal (ie, acceleration signal) due to misoperation, such as stepping on the accelerator pedal, the vehicle controller will not respond to the throttle signal, and the vehicle will not release the brake and walk. Only after the door is closed, or after the door brake is closed, the vehicle controller HCU responds to the throttle signal output by the accelerator pedal, and controls the drive motor to resume driving by the drive motor controller. Brake and drive the vehicle according to the throttle signal.

Moreover, considering the driver's risk of closing the passenger door in the unconsciously stepping on the accelerator pedal or immediately recovering the power, the present embodiment provides a functional protection, that is, the condition that the throttle signal of the vehicle controller HCU responds is satisfied. Yes: The accelerator pedal starts to send the throttle signal at a later time than when the door is closed. That is, the vehicle controller HCU only responds to the throttle signal that the accelerator pedal begins to output after the door is closed. Two cases: In the first case, when the door state is changed to the closed state, the accelerator pedal does not output the throttle signal, and after the door is closed, the accelerator pedal outputs the throttle signal, then the vehicle controller HCU responds to the throttle signal; Secondly, the accelerator pedal outputs the throttle signal when the door is open, and continues until the door is closed. Then the vehicle controller HCU does not respond to the throttle signal, and only the driver turns the passenger door, that is, the door changes. After the state is off, the accelerator pedal is released and the accelerator pedal is depressed again, and the vehicle controller HCU responds to the The new accelerator pedal and the throttle signal generated, and releases the auxiliary brake.

In addition, as shown in FIG. 1, the control device is further provided with an auxiliary brake function release switch, which is a hardware switch, and the vehicle controller HCU samples and connects the switch. If the vehicle is always unable to drive due to damage to the passenger door sensor, the brake function can be released by pressing the auxiliary brake function release switch to ensure normal running of the vehicle.

Control System Embodiment 2

The control system provided in this embodiment further includes a parking brake switch based on the control system of the first embodiment. As shown in FIG. 2, the vehicle controller HCU samples and connects the parking brake switch. The parking brake switch is a hardware switch, such as a lever switch, and the driver can send a parking brake request to the vehicle controller HCU by pressing the switch.

Since the other components in the control system have been described in detail in Embodiment 1, they will not be described again here.

The passenger door sensor, the accelerator pedal, the parking brake switch and the driving motor speed detecting module respectively send the collected data information to the vehicle controller HCU, and the vehicle controller HCU processes and analyzes the received data, and the analysis process is specific. as follows:

The vehicle controller HCU judges according to the vehicle speed information transmitted by the driving motor speed detecting module. When the speed of the vehicle is 0, that is, when the vehicle is in the parking state, as shown in FIG. 3, if the vehicle controller receives the parking system The parking brake request sent by the switch and/or the door state is judged to be in an open state according to the received door state information, then the vehicle controller HCU controls the vehicle to enter the auxiliary brake mode, and outputs a Haltbrake command to the brake controller. The motion controller controls the brake device according to the Haltbrake command to apply air brake to the wheel. At the same time, the vehicle controller HCU sends a standby command to the drive motor controller to cut off the drive torque. The braking of the vehicle is achieved by the above two controls. After that, even if the driver outputs a certain throttle signal (ie, acceleration signal) due to misoperation, such as stepping on the accelerator pedal, the vehicle controller will not respond to the throttle signal, and the vehicle will not release the brake and walk. Only when the door is closed and the parking brake switch returns to the original state (ie, the parking brake switch no longer issues a vehicle brake request), the vehicle controller HCU responds to the accelerator signal output from the accelerator pedal and controls the drive through the drive motor controller. The motor resumes driving, the vehicle releases the brake and drives the vehicle according to the throttle signal.

Moreover, in consideration of the driver's risk of closing the passenger door in an unconsciously stepping on the accelerator pedal or immediately recovering the power, the present embodiment provides a functional protection, since the functional protection is already in the above embodiment. To make a statement, we will not repeat them here.

In addition, as shown in FIG. 2, the control device is further provided with an auxiliary brake function release switch, the switch is a hardware switch, and the vehicle controller HCU samples and connects the switch. If the vehicle is always unable to drive due to damage to the passenger door sensor or damage to the parking brake switch, the brake function can be released by pressing the auxiliary brake function release switch to ensure normal running of the vehicle.

In this embodiment, the vehicle controller HCU performs braking determination according to the information sent by the parking brake switch and the passenger door sensor, specifically: whether the passenger door is opened, and whether the parking brake switch is open (the parking brake switch is open) The parking brake switch issues a brake request, and the parking brake switch is closed when the parking brake switch does not issue a brake request). As long as at least one of the two judgment conditions satisfies the condition, the vehicle controller HCU controls the vehicle brake, and the brake reliability is higher with respect to the technical solution of the first embodiment. In addition, the use of the parking brake switch to achieve braking, can reduce the number of steps to step on the brake pedal or pull the hand brake, reduce the driver's driving strength, improve driving comfort.

Control device embodiment 1

Since the control device has been described in detail in the control system embodiment 1, the control device will not be specifically described herein.

Control device embodiment 2

Since the control device has been described in detail in the control system embodiment 2, the control device will not be specifically described herein.

Specific embodiments have been given above, but the invention is not limited to the described embodiments. The basic idea of the present invention lies in the above basic scheme, and it is not necessary for the person skilled in the art to design various modified models, formulas and parameters according to the teachings of the present invention. Variations, modifications, alterations and variations of the embodiments may be made without departing from the spirit and scope of the invention.

Claims

A vehicle safety operation control system, comprising: a control module, a door state detection module, a throttle signal generation module, a vehicle speed detection module and a vehicle brake system, wherein the control module samples and connects the door state detection module and the vehicle speed detection A module and a throttle signal generating module are coupled to the vehicle brake system.
The vehicle safety operation control system according to claim 1, wherein said control device further comprises a parking brake switch, and said control module samples and connects said parking brake switch.
A vehicle safety operation control system according to claim 1, wherein said vehicle brake system includes a wheel brake portion and a drive motor brake portion, said wheel brake portion including a brake controller and A brake device for wheel brakes, the brake portion of the drive motor is a drive motor controller, the brake controller controls a brake device, and the control module connects the brake controller and the drive motor controller.
The vehicle safety operation control system according to any one of claims 1 to 3, characterized in that the control device further comprises a brake function release switch, and the control module samples and connects the brake function release switch.
A vehicle safety operation control device, comprising: a control module, a door state detection module, a throttle signal generation module and a vehicle speed detection module, wherein the control module samples and connects the door state detection module, the vehicle speed detection module and the throttle signal generation A module having a control signal output port for controlling a brake system connected to the vehicle.
The vehicle safety operation control device according to claim 5, wherein the control device further comprises a parking brake switch, and the control module samples and connects the parking brake switch.
The vehicle safety operation control device according to claim 5 or 6, wherein the control device further includes a brake function release switch, and the control module samples and connects the brake function release switch.
A vehicle safety operation control method dedicated to the vehicle safety operation control system according to claim 1, wherein when the vehicle speed is 0, if the door is in an open state, the vehicle brake is controlled, and even if there is an accelerator signal, the control is performed. The module will also not respond; the control module will only respond to the throttle signal after the door is closed.
The vehicle safety operation control method according to claim 8, wherein the control method further relates to a brake request signal issued by the parking brake switch, and when the vehicle speed is 0, if the door is open and/or parked When the brake switch is turned on, the vehicle brake is controlled; when the door is closed and the parking brake switch is closed, the control module responds to the throttle signal;

The parking brake switch is open to indicate that the parking brake switch issues a brake request, and the parking brake switch is closed, that is, the parking brake switch does not issue a brake request.
The vehicle safety operation control method according to claim 8 or 9, wherein the throttle signal responded by the control module is a throttle signal that satisfies a certain condition, and the certain condition is that the start time of the throttle signal is later than the door. The moment when it becomes closed.