CN209757071U - automatic hold system based on electric braking - Google Patents
automatic hold system based on electric braking Download PDFInfo
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- CN209757071U CN209757071U CN201920297701.4U CN201920297701U CN209757071U CN 209757071 U CN209757071 U CN 209757071U CN 201920297701 U CN201920297701 U CN 201920297701U CN 209757071 U CN209757071 U CN 209757071U
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Abstract
the utility model relates to an automatically controlled technical field provides an Autohold system based on electric braking, include: a brake stroke sensor, an accelerator opening sensor and an automatic switch; the whole vehicle controller is connected with the braking stroke sensor, the accelerator opening sensor and the automatic switch; and the motor controller is connected with the motor. When the automatic switch is turned on, the vehicle control unit generates a parking instruction based on a braking signal only when the motor operates at a low speed, so that the vehicle control unit is prevented from directly entering a parking state when the motor operates at a high speed, and the driving safety is improved.
Description
Technical Field
The utility model relates to an automatically controlled technical field provides an Autohold system based on electric braking.
Background
as the amount of vehicles kept increases, the environment for driving becomes relatively complex. In the process of driving, a user often encounters the condition that the user needs to stop when driving in a congestion environment. The driver needs to step on the brake system for a long time often in the driving process, and the fatigue of the driver is easily caused. The automatic hold (automatic parking) system can help a driver to stop a vehicle in place when the vehicle needs to be stopped, and the driver does not need to step on a brake system for a long time, so that the fatigue of the driver can be effectively relieved. The brake-assisted AutoHold system is used as a practical driving assistance system, avoids accidents for drivers, relieves driving fatigue, ensures driving safety and has great significance.
when an AutoHold switch of an existing brake auxiliary AutoHold system is in an on state, the existing brake auxiliary AutoHold system directly enters a parking state based on a brake signal, and the existing brake auxiliary AutoHold system may enter the parking state when a motor runs at a high speed, so that potential safety hazards of driving exist.
SUMMERY OF THE UTILITY MODEL
The utility model provides an Autohold system based on electric braking, when the Autohold switch is in the open mode, only just can get into the parking state based on braking signal when the motor low-speed operation, improved the security of driving.
In order to achieve the above object, the present invention provides an Autohold system based on electric braking, the system includes:
A brake stroke sensor, an accelerator opening sensor and an automatic switch;
The whole vehicle controller is connected with the braking stroke sensor, the accelerator opening sensor and the automatic switch;
And the motor controller is connected with the motor.
Further, when the automatic switch is in an on state, the vehicle control unit detects the current rotating speed of the motor based on the braking signal, if the current rotating speed of the motor is greater than or equal to a rotating speed threshold value, a braking instruction is generated, otherwise, a parking instruction is generated, the vehicle control unit sends the braking instruction or the parking instruction to the motor controller, the motor controller reduces the rotating speed of the motor based on the braking instruction until the rotating speed of the motor is lower than the rotating speed threshold value, the parking instruction is generated, the motor controller applies torque opposite to the rotating trend to the motor based on the parking instruction, and the motor is controlled to stop rotating, namely, the vehicle is in a parking state.
further, the system further comprises:
And the MMI multimedia is connected with the whole vehicle controller and used for displaying whether the vehicle is in a parking state at present.
Further, the system further comprises:
And when the motor controller or the motor fails, the vehicle control unit drives the EPB mechanical parking system to park based on a braking instruction.
When the automatic switch is turned on, the vehicle control unit generates a parking instruction based on a braking signal only when the motor operates at a low speed, so that the vehicle control unit is prevented from directly entering a parking state when the motor operates at a high speed, and the driving safety is improved.
drawings
Fig. 1 is a schematic structural diagram of an automatic system based on electric braking according to an embodiment of the present invention;
1. the system comprises a brake stroke sensor, a 2-accelerator opening sensor, a 3-automatic switch, a 4-vehicle controller, a 5-motor controller, a 6-motor, a 7-MMI multimedia and an 8-EPB mechanical parking system.
Detailed Description
The following description of the preferred embodiments of the present invention will be made in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an automatic hold system based on electric braking according to an embodiment of the present invention, and for convenience of description, only relevant portions of the present invention are shown.
The Autohold system comprises:
A brake stroke sensor 1 for detecting a brake stroke of a brake pedal;
an accelerator opening sensor 2 for detecting the opening of an accelerator pedal;
The automatic switch 3 is used for controlling the automatic parking function to be turned on and off;
The whole vehicle controller 4 is connected with the braking stroke sensor 1, the accelerator opening sensor 2 and the automatic switch 3;
And the motor controller 5 is connected with the vehicle control unit 4, and the motor controller 5 is connected with the motor 6.
When the automatic switch 3 is in the on state, the vehicle control unit 4 detects the current rotating speed of the motor 6 based on the braking signal, and if the current rotating speed of the motor 6 is greater than or equal to the rotating speed threshold, generating a braking instruction, if the current rotating speed of the motor 6 is less than the rotating speed threshold value, generating a parking instruction, sending the braking instruction or the parking instruction to the motor controller 5 by the vehicle control unit 4, reducing the rotating speed of the motor 6 by the motor controller 5 based on the braking instruction until the rotating speed of the motor 6 is lower than the rotating speed threshold value, a parking instruction is generated, the motor controller 5 applies a torque opposite to the rotation tendency to the motor 6 based on the parking instruction, controls the motor 6 to stop, entering a parking state, generating a brake signal based on the brake stroke of the brake pedal detected by the brake stroke sensor 1, and generating the brake signal if the detected brake stroke of the brake pedal is greater than a stroke threshold value;
The utility model discloses in, after getting into the parking state, vehicle control unit withdraws from the parking state based on start instruction, and start instruction is based on the throttle aperture that throttle aperture sensor detected and generates, if the throttle aperture that detects is greater than the aperture threshold value, then generates start instruction.
When the automatic switch 3 is turned on, the vehicle control unit 4 generates a parking instruction based on the braking signal only when the motor operates at a low speed, so that the vehicle control unit is prevented from directly entering a parking state when the motor 6 operates at a high speed, and the driving safety is improved.
The utility model discloses in, this Autohold system still includes:
and the MMI multimedia 7 is connected with the whole vehicle controller 4 and is used for displaying whether the vehicle is in a parking state currently.
The utility model discloses in, this Autohold system still includes:
And the EPB mechanical parking system 8 drives the EPB mechanical parking system 8 to park based on a braking instruction by the vehicle control unit 4 when the motor controller 5 or the motor 6 fails.
Obviously the specific implementation of the present invention is not limited by the above-mentioned manner, and various insubstantial improvements made by the method concept and technical solution of the present invention are all within the protection scope of the present invention.
Claims (4)
1. An electric brake based Autohold system, the system comprising:
A brake stroke sensor, an accelerator opening sensor and an automatic switch;
The whole vehicle controller is connected with the braking stroke sensor, the accelerator opening sensor and the automatic switch;
And the motor controller is connected with the motor.
2. The automatic brake-based system according to claim 1, wherein when the automatic switch is in an on state, the vehicle control unit detects a current rotation speed of the motor based on the brake signal, if the current rotation speed of the motor is greater than or equal to a rotation speed threshold, a brake instruction is generated, otherwise, a parking instruction is generated, the vehicle control unit sends the brake instruction or the parking instruction to the motor controller, the motor controller reduces the rotation speed of the motor based on the brake instruction until the rotation speed of the motor is lower than the rotation speed threshold, a parking instruction is generated, the motor controller applies a torque opposite to a rotation trend to the motor based on the parking instruction, and the motor is controlled to stop, i.e., enter a parking state.
3. An electric brake based automation system as claimed in claim 1, characterised in that the system further comprises:
And the MMI multimedia is connected with the whole vehicle controller and used for displaying whether the vehicle is in a parking state at present.
4. an electric brake based automation system as claimed in claim 1, characterised in that the system further comprises:
And when the motor controller or the motor fails, the vehicle control unit drives the EPB mechanical parking system to park based on a braking instruction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920297701.4U CN209757071U (en) | 2019-03-07 | 2019-03-07 | automatic hold system based on electric braking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920297701.4U CN209757071U (en) | 2019-03-07 | 2019-03-07 | automatic hold system based on electric braking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209757071U true CN209757071U (en) | 2019-12-10 |
Family
ID=68754240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920297701.4U Active CN209757071U (en) | 2019-03-07 | 2019-03-07 | automatic hold system based on electric braking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209757071U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114619893A (en) * | 2022-04-26 | 2022-06-14 | 奇瑞新能源汽车股份有限公司 | Parking method and system |
| CN115139998A (en) * | 2022-07-13 | 2022-10-04 | 东风汽车集团股份有限公司 | Automatic parking control method, device and equipment and readable storage medium |
-
2019
- 2019-03-07 CN CN201920297701.4U patent/CN209757071U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114619893A (en) * | 2022-04-26 | 2022-06-14 | 奇瑞新能源汽车股份有限公司 | Parking method and system |
| CN114619893B (en) * | 2022-04-26 | 2024-05-10 | 奇瑞新能源汽车股份有限公司 | Parking method and system |
| CN115139998A (en) * | 2022-07-13 | 2022-10-04 | 东风汽车集团股份有限公司 | Automatic parking control method, device and equipment and readable storage medium |
| CN115139998B (en) * | 2022-07-13 | 2024-04-26 | 东风汽车集团股份有限公司 | Automatic parking control method, device, equipment and readable storage medium |
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