TWI667161B - Separate electronic brake system - Google Patents

Abstract

A separate electronic brake system is adapted to control a brake of a vehicle, the vehicle includes a main motor, and an onboard network that outputs a vehicle status information, the separate electronic brake system includes a pedal unit, a drive unit, and a a brake unit and a control unit, the pedal unit including a pedal sensor capable of generating a pedal signal, the drive unit including a brake motor for receiving and operating according to an electronic brake signal, and a linkage of the brake motor The brake unit includes a brake master cylinder connected to the vehicle and the speed reduction module and coupled by the speed reduction module, the control unit is electrically connected to the pedal sensor, the brake motor, the main motor and The in-vehicle network can output the electronic brake signal to drive the brake motor to brake in response to the rotation speed of the pedal signal. Since the brake master cylinder is linked by the brake motor, the installation space can be saved.

Description

Separate electronic brake system

The present invention relates to a brake system, and more particularly to a separate electronic brake system.

An existing brake system, as shown in Chinese Patent Publication No. CN 202006785U, is applied to a vehicle. The existing brake system includes a pedal, a linkage module that interlocks the pedal, and a change by the linkage module. The brake master cylinder that brakes the vehicle with the hydraulic pressure of the brake can brake the vehicle when the pedal is stepped on and the linkage module and the master cylinder are interlocked.

However, the setting of the interlocking module must be limited by the appearance of the vehicle, and when it is installed in a small space, it is also inconvenient to apply, so it is necessary to improve it.

Accordingly, it is an object of the present invention to provide a separate electronic brake system that overcomes the disadvantages of the prior art.

Thus, the split electronic brake system of the present invention is adapted to control the braking of a vehicle, the vehicle comprising a main motor, and an in-vehicle network for receiving vehicle body signals and outputting a pair of vehicle status information corresponding to the body signal, the separation The electronic brake system comprises a pedal unit, a driving unit, a braking unit, and a control unit.

The pedal unit includes a pedal, and a pedal sensor disposed on the pedal and generating a pedal signal according to the stepped depth of the pedal, the driving unit including a brake for receiving and operating according to an electronic brake signal a motor, and a deceleration module coupled to and coupled by the brake motor, the brake motor is self-detecting to generate a motor inspection signal, the brake unit includes a connection to the vehicle and the deceleration module and is coupled by the deceleration module And changing a hydraulic pressure for braking to brake the master cylinder of the vehicle, the control unit electrically connecting the pedal sensor, the brake motor, the main motor and the vehicle network, and receiving the vehicle status information The control unit may determine, according to the vehicle status information, the pedal signal and the motor check signal, when at least one of the abnormalities drives the main motor to prohibit operation to stop the vehicle, the control unit may be in the vehicle When the status information, the pedal signal, and the motor check signal are all abnormal, the electronic brake signal is output to drive the brake motor to The pedal rotational speed signal is operated, the interlocked brake master cylinder hydraulic pressure of the vehicle changes.

The utility model has the following advantages: when the vehicle state information, the pedal signal and the motor inspection signal are abnormal, the electronic brake signal is output to drive the brake motor to operate corresponding to the rotation speed of the pedal signal, so as to interlock The brake master cylinder brakes the vehicle by changing the oil pressure. Since the brake master cylinder is interlocked with the brake motor, the arrangement space can be saved and the operation can be facilitated.

Referring to Figures 1 and 2, an embodiment of the split electronic brake system of the present invention is adapted to control the braking of a vehicle 9, the vehicle 9 including a main motor 91, a body signal for receiving and outputting a pair of body signals. An in-vehicle network 92 for vehicle status information, a hand brake 93, and an electrical connection to the in-vehicle network 92 can be used to control the vehicle controller 94 that causes the main motor 91 to operate to interlock the movement of the vehicle 9. In the present embodiment, the reference vehicle body signals are, for example, a key activation condition, a vehicle speed, a tire pressure, a brake condition, a driving direction, and the like, and a common sensing signal disposed in the vehicle 9 and the data of the vehicle status information. The type is stored on the in-vehicle network 92 for instant access.

The vehicle state information has a pair of start parameters for which the vehicle 9 is just started, a pair of vehicle speed parameters for the vehicle speed of the pair of vehicles 9, a pair of flameout parameters for which the vehicle 9 is just extinguished, and the hand brake of the pair of vehicles 9. Whether the hand brake parameters are pulled up. It should be noted that the startup parameter and the flameout parameter may be used separately as two parameters, but may be based on the condition that the vehicle key is activated as a basis for determining whether the vehicle is started or turned off.

The split electronic brake system comprises a pedal unit 2, a driving unit 3, a braking unit 4, and a control unit 5.

The pedal unit 2 includes a pedal 21, and a pedal sensor 22 disposed on the pedal 21 and capable of generating a pedal signal according to the stepped depth of the pedal 21.

The driving unit 3 includes a brake motor 31 for receiving and operating according to an electronic brake signal, and a deceleration module 32 coupled to and coupled by the brake motor 31. The brake motor 31 can self-detect to generate a motor inspection. signal. In the embodiment, the speed reduction module 32 is a speed reducer.

The brake unit 4 includes a brake master cylinder 41 that connects the vehicle 9 and the speed reduction module 32 and can be interlocked by the speed reduction module 32 to change the oil pressure for braking to brake the vehicle 9 .

The control unit 5 is electrically connected to the pedal sensor 22, the brake motor 31, the main motor 91, the vehicle network 92 and the vehicle controller 94, and can receive the vehicle status information, and the control unit 5 can Determining the vehicle status information, the pedal signal, and the motor check signal, and causing the main motor 91 to prohibit operation to stop the vehicle 9 when at least one of the abnormalities is abnormal, the control unit 5 and the vehicle status information, When there is no abnormality in the pedal signal and the motor check signal, the electronic brake signal is output to drive the brake motor 31 to operate at a rotational speed corresponding to the pedal signal, and the brake master cylinder 41 is interlocked to change the hydraulic pressure to brake the vehicle 9.

Further, the control unit 5 can switch between a startup check mode, a brake operation mode, and a brake end mode, and when the control unit 5 determines that the vehicle 9 is just starting according to the startup parameter of the vehicle state information. Switching to the startup check mode, when the control unit 5 moves after the start of the startup check mode and the vehicle 9 is driven, switching to the brake operation mode, when the control unit 5 is turned off according to the vehicle state information When the parameter determines that the vehicle 9 is just off, it switches to the brake end mode.

Referring to FIGS. 1, 2, and 3, in the startup check mode, the control unit 5 sequentially determines the vehicle state information, the pedal signal, and the motor check signal to determine whether the vehicle state information is a valid signal. The vehicle status information is an invalid signal, and the main motor 91 is driven to prohibit operation to stop the vehicle 9 from running. If the vehicle status information is a valid signal, it is then determined whether the pedal signal is a valid signal.

If the pedal signal is an invalid signal, the main motor 91 is driven to prohibit operation to stop the vehicle 9 from running. If the pedal signal is a valid signal, it is then determined whether the motor check signal corresponds to the brake motor 31 being abnormal.

If the brake motor 31 is in an abnormal state, the main motor 91 is driven to prohibit operation to stop the vehicle 9, and if the brake motor 31 is in a normal state, the start-up inspection mode is ended.

It should be noted that the valid signal referred to in this specification means that the corresponding information value falls within the preset range, and the invalid signal means that the corresponding information value falls outside the preset range.

Referring to FIGS. 1, 2, and 4, in the brake operation mode, the control unit 5 sequentially determines the vehicle state information, the pedal signal, and the motor check signal, and first determines whether the pedal signal is received, if not received. When the pedal signal is reached, a detection procedure is executed, and if the pedal signal is received, it is then determined whether the vehicle status information is a valid signal.

If the vehicle status information is an invalid signal, driving the main motor 91 to decelerate to make the vehicle 9 stationary, then driving the main motor 91 to prohibit operation to stop the vehicle 9 to drive, if the vehicle status information is a valid signal, then determining Whether the pedal signal is a valid signal.

If the pedal signal is an invalid signal, the main motor 91 is driven to decelerate to make the vehicle 9 stationary, and then the main motor 91 is driven to prohibit the vehicle 9 from stopping. If the pedal signal is a valid signal, then the motor is judged. It is checked whether the signal corresponds to the brake motor 31 being abnormal.

If the brake motor 31 is in an abnormal state, the main motor 91 is driven to decelerate until the vehicle 9 is at rest, and then the main motor 91 is driven to prohibit the operation of the vehicle 9 to stop traveling. If the brake motor 31 is in a normal condition, the motor is output. The electronic brake signal is driven to drive the brake motor 31 to operate at a rotational speed corresponding to the pedal signal to interlock the brake master cylinder 41 to change the oil pressure to brake the vehicle 9.

Then, it is determined whether the vehicle speed parameter of the vehicle state information corresponds to the vehicle 9 being in a stationary state. If the vehicle 9 is in a non-stationary state, the braking operation mode is repeatedly executed, and if the vehicle is in a stationary state, the braking operation mode is ended. .

In the detection program, the control unit 5 determines whether the vehicle 9 needs to perform braking according to the vehicle state information, and if the brake is not required, the brake operation mode is ended, and if braking is required, then it is determined that the brake is received. The steps after the pedal signal. In the present embodiment, the condition in which the brake is not required may be a condition in which the vehicle 9 is in the automatic driving mode, but is not limited thereto.

Referring to FIGS. 1 and 2, in the braking end mode, the control unit 5 sequentially determines the vehicle state information, the pedal signal, and the motor inspection signal, and first determines the vehicle speed information according to the vehicle speed information. Whether the vehicle speed of the vehicle 9 is zero or not, if the vehicle speed of the vehicle 9 is not zero, the main motor 91 is driven to decelerate, and the brake end mode is repeatedly executed.

If the vehicle speed of the vehicle 9 is zero, it is determined whether the hand brake 93 of the vehicle 9 is pulled up according to the hand brake parameter of the vehicle state information, and if the hand brake 93 of the vehicle 9 is not pulled up, the main motor is driven. 91 is prohibited from operating to stop the vehicle 9 from running. If the hand brake 93 of the vehicle 9 is pulled up, it is then determined whether the vehicle state information is a valid signal.

If the vehicle status information is an invalid signal, the main motor 91 is driven to prohibit operation to stop the vehicle 9 to run. If the vehicle status information is a valid signal, then it is determined whether the pedal signal is a valid signal.

If the pedal signal is an invalid signal, the main motor 91 is driven to prohibit operation to stop the vehicle, and if the pedal signal is a valid signal, it is then determined whether the motor check signal corresponds to the brake motor 31 being abnormal.

If the brake motor 31 is in an abnormal condition, the main motor 91 is driven to prohibit the operation to stop the vehicle 9 from running. If the brake motor 31 is in a normal condition, then the vehicle controller 94 determines whether the vehicle controller 94 enters based on the signal of the vehicle controller 94. Sleep mode.

If the vehicle controller 94 does not enter the sleep mode, the main motor 91 is driven to prohibit operation to stop the vehicle 9, and if the vehicle controller 94 enters the sleep mode, the brake end mode is ended.

When the control unit 5 switches to the brake end mode, and determines that the hand brake 93 of the vehicle 9 is pulled up, when it is determined that the vehicle state information is an invalid signal, the pedal signal is an invalid signal, and the brake motor 31 is abnormal. When the condition or the vehicle controller 94 does not enter the sleep mode, these conditions are further stored as fault information for subsequent reading.

It is worth mentioning that, in the foregoing modes, the control unit 5 can also record and transmit the abnormal condition to the in-vehicle network 92 for driving the main motor 91 to prohibit operation due to abnormal conditions. Follow-up use.

In summary, when the control unit 5 outputs no abnormality in the vehicle state information, the pedal signal, and the motor check signal, the electronic brake signal is output to drive the brake motor 31 to operate at a speed corresponding to the pedal signal. The master cylinder 41 is interlocked to change the oil pressure to brake the vehicle 9, and since the brake master motor 41 is interlocked with the brake motor 31, it is not necessary to provide the pedal 21 and the master cylinder 41 as in the prior art. By interlocking the modules, the arrangement space can be saved and the installation is facilitated, so that the object of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

2‧‧‧ pedal unit

21‧‧‧ pedal

22‧‧‧ pedal sensor

3‧‧‧Drive unit

31‧‧‧Brake motor

32‧‧‧Deceleration Module

4‧‧‧ brake unit

41‧‧‧ brake master cylinder

5‧‧‧Control unit

9‧‧‧ Vehicles

91‧‧‧Main motor

92‧‧‧Car network

93‧‧‧Hand brakes

94‧‧‧ Vehicle Controller

Other features and advantages of the present invention will be apparent from the embodiments of the present invention, wherein: FIG. 1 is an embodiment of a separate electronic brake system of the present invention and a system architecture diagram of a vehicle; FIG. 3 is a flowchart of a startup check mode performed by a control unit of the embodiment; FIG. 4 is a flowchart of the brake operation mode performed by the control unit of the embodiment; and FIG. It is a flowchart of the control unit of this embodiment executing a brake end mode.

Claims (5)

A separate electronic brake system for controlling the braking of a vehicle, the vehicle comprising a main motor, and an onboard network for receiving vehicle body signals and outputting a pair of vehicle status information corresponding to the body signal, the separate electronic brake The system comprises: a pedal unit including a pedal, and a pedal sensor disposed on the pedal and capable of generating a pedal signal according to the stepped depth of the pedal; a driving unit including a receiving and receiving according to an electronic brake a signal-operated brake motor, and a deceleration module coupled to and coupled by the brake motor, the brake motor being self-detectable to generate a motor inspection signal; a brake unit including a connection to the vehicle and the deceleration module a brake master cylinder that changes the oil pressure for the brake to brake the vehicle by the linkage of the speed reduction module; and a control unit electrically connects the pedal sensor, the brake motor, the main motor, and the vehicle network Receiving the vehicle status information, the control unit may perform the vehicle status information, the pedal signal, and the motor check signal. Determining that when at least one of the abnormalities drives the main motor to prohibit operation to stop the vehicle, the control unit may output the electronic brake signal when the vehicle status information, the pedal signal, and the motor check signal are not abnormal. The brake motor is driven to operate at a rotational speed corresponding to the pedal signal to interlock the brake master cylinder to change the oil pressure to brake the vehicle. The separate electronic brake system of claim 1, wherein the vehicle status information has a pair of starting parameters that should be just started, and the control unit determines that the vehicle is just starting according to the starting parameter of the vehicle status information. Switching to a startup check mode, in which the control unit sequentially determines the vehicle state information, the pedal signal, and the motor check signal, and first determines whether the vehicle state information is a valid signal, if The vehicle status information is an invalid signal, driving the main motor to prohibit operation to stop the vehicle, if the vehicle status information is a valid signal, then determining whether the pedal signal is a valid signal, and if the pedal signal is an invalid signal, driving the main The motor is prohibited from running to stop the vehicle from running. If the pedal signal is a valid signal, then it is determined whether the motor check signal corresponds to an abnormal condition of the brake motor. If the brake motor is in an abnormal condition, the main motor is driven to prohibit operation. The vehicle stops driving, and if the brake motor is in a normal condition, the end is ended. Start the check mode. The separate electronic brake system of claim 2, wherein the vehicle status information further has a pair of vehicle speed parameters that should be the vehicle speed of the vehicle, the control unit after the start of the startup check mode and the vehicle is driven to move, Switching to a brake operation mode, in the brake operation mode, the control unit sequentially determines the vehicle state information, the pedal signal, and the motor inspection signal, and first determines whether the pedal signal is received, if the pedal signal is not received The pedal signal performs a detection procedure. If the pedal signal is received, then it is determined whether the vehicle status information is a valid signal. If the vehicle status information is an invalid signal, the main motor is driven to prohibit operation to stop the vehicle. If the vehicle status information is a valid signal, then determining whether the pedal signal is a valid signal, if the pedal signal is an invalid signal, driving the main motor to prohibit operation to stop the vehicle, if the pedal signal is a valid signal, then determining The motor checks whether the signal corresponds to the abnormal condition of the brake motor, if the brake horse Reaching an abnormal condition, driving the main motor to prohibit operation to stop the vehicle, if the brake motor is in a normal condition, outputting the electronic brake signal to drive the brake motor to operate at a speed corresponding to the pedal signal to interlock the brake total The pump changes the oil pressure to brake the vehicle, and then determines whether the vehicle speed parameter of the vehicle status information corresponds to the vehicle has been in a stationary state, and if the vehicle is in a non-stationary state, repeating the braking operation mode, if the vehicle is stationary In the state, the braking operation mode is ended. In the detecting process, the control unit determines whether the vehicle needs to perform braking according to the vehicle state information, and if the braking is not required, the braking operation mode is ended, and if braking is required, Next, it is determined that the step after receiving the pedal signal is performed. The separate electronic brake system of claim 3, wherein the vehicle further comprises a hand brake, and a vehicle controller electrically connected to the vehicle network and the control unit, the vehicle status information further having a pair of vehicles a flameout parameter that has just been turned off, and a pair of hand brake parameters that should be pulled up by the hand brake of the vehicle, the control unit determines that the vehicle is just turned off according to the flameout parameter of the vehicle state information, and switches to a brake end mode In the braking end mode, the control unit sequentially determines the vehicle state information, the pedal signal, and the motor inspection signal, and first determines whether the vehicle speed of the vehicle is zero according to the vehicle speed parameter of the vehicle state information. When the vehicle speed of the vehicle is not zero, the main motor is driven to decelerate, and the braking end mode is repeatedly executed. If the vehicle speed of the vehicle is zero, the hand brake parameter of the vehicle state information is used to determine whether the hand brake of the vehicle is pulled. Starting, if the hand brake of the vehicle is not pulled up, driving the main motor to prohibit operation to stop the vehicle, if the vehicle When the hand brake is pulled up, it is then determined whether the vehicle status information is a valid signal. If the vehicle status information is an invalid signal, the main motor is driven to prohibit operation to stop the vehicle, and if the vehicle status information is a valid signal, Then determining whether the pedal signal is a valid signal, if the pedal signal is an invalid signal, driving the main motor to prohibit operation to stop the vehicle, if the pedal signal is a valid signal, then determining whether the motor check signal corresponds to the brake motor If the brake motor is in an abnormal condition, the main motor is driven to be disabled to stop the vehicle, and if the brake motor is in a normal condition, then the vehicle controller determines whether the vehicle controller enters the sleep mode according to the signal of the vehicle controller. If the vehicle controller does not enter the sleep mode, the main motor is driven to prohibit operation to stop the vehicle, and if the vehicle controller enters the sleep mode, the brake end mode is ended. The separate electronic brake system of claim 4, wherein when the control unit switches to the brake end mode and determines that the hand brake of the vehicle is pulled up, when it is determined that the vehicle state information is an invalid signal, When the pedal signal is an invalid signal, the brake motor is in an abnormal condition, or the vehicle controller does not enter the sleep mode, these conditions are further stored as fault information for subsequent reading.