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Automatic parking control system and control method for automatic transmission vehicle

A technology of automatic parking and control system, applied in the direction of control device, vehicle components, driver input parameters, etc., can solve problems such as vehicle lockup, and achieve the effect of preventing the car from rolling, improving convenience, and preventing burnout

Inactive Publication Date: 2020-11-13
NANJING HANXIYUE AUTOMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing automatic parking maintenance system, the driver makes the automatic parking maintenance system enter the working state due to misoperation during driving or reversing, causing the vehicle to be locked

Method used

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  • Automatic parking control system and control method for automatic transmission vehicle
  • Automatic parking control system and control method for automatic transmission vehicle
  • Automatic parking control system and control method for automatic transmission vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as Figure 1-3 As shown, the automatic parking control system and control method for an automatic transmission vehicle according to an embodiment of the present invention include a detection module 1, a sensor module 2, an automatic transmission control unit 3, an engine control unit 4 and a judgment module 5. Module 1 is respectively connected to the sensor module 2, the automatic transmission control unit 3, the engine control unit 4 and the judgment module 5 through the CAN bus 6, and the automatic parking maintenance system is divided into an off state 7. Standby state 8, working state 9, release state 10 and takeover state 11;

[0043] Wherein, the detection module 1 is used to detect whether the start-up condition of the automatic parking function is met, and the sensor module 2 includes a brake pedal sensor 12, a steering wheel pressure sensor 13, a seat pressure sensor 14, an accelerator pedal sensor 15 and a body The electronic stability system 16, the ju...

Embodiment 2

[0045] Such as Figure 1-3As shown, the detection module 1 also includes: vehicle speed, brake master cylinder pressure, driving side safety belt status information, cockpit door status information, engine speed, accelerator pedal opening and gear status information. In 9, when it is judged that the vehicle has a slope-slipping tendency, and the braking pressure on the wheels is actively increased, if there is still a slope-sliding tendency, then directly switch to the electronic handbrake system to work, and when the release state 10 condition of automatic parking is met Next, when the system jumps from the working state 9 to the standby state 8, the wheel brake pressure is slowly released. It is not difficult to see from the above design that it effectively avoids the inconvenience caused by the driver's unintentional activation of the automatic parking maintenance system to enter the working state during driving or reversing, and improves user satisfaction.

Embodiment 3

[0047] Such as Figure 1-3 As shown, the automatic transmission control unit 3 checks whether there is a frame loss or a single frame signal bit error in the CAN message of the vehicle; if there is a frame loss or a single frame signal bit error, the CAN message of the automatic parking function is judged If the check is abnormal, keep the current state and do not activate the automatic parking function. It is characterized in that the release state 10 means that the speed of each wheel is zero, the actual torque output by the engine is sufficient to overcome the current gradient resistance, the transmission is not in neutral, and the clutch is not in use. completely trampled down. It is not difficult to see from the above design that the driving experience is improved, and the driver forgets that the automatic parking function is off and releases the brake pedal, which may cause rear-end collisions or easy slippage on slopes.

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Abstract

The invention discloses an automatic parking control system and control method for an automatic transmission vehicle. The system comprises a detection module, a sensor module, an automatic gearbox control unit, an engine control unit and a judgment module. The detection module is connected with the sensor module, the automatic gearbox control unit, the engine control unit and the judgment module through a CAN bus, and the automatic parking keeping system is divided into a closed state, a standby state, a working state, a release state and a take-over state. The control system has the advantages that all conditions conform to operation habits of most drivers, the drivers can clearly understand and adapt to actions of the control system, and good user interactivity and usability are achieved; in automatic parking function opening judgment, the conditions that a driver door is closed and a driver safety belt is fastened are added, and the driver is forbidden to use the automatic parking system under the condition that the safety of the driver is not guaranteed; the pressure maintaining time is monitored in the automatic parking pressure maintaining process so as to prevent system components from being burnt out.

Description

technical field [0001] The invention relates to the technical field of automobile brake control, in particular to an automatic parking control system and control method for an automatic transmission vehicle. Background technique [0002] With the rapid development of automobile intelligence, the application of various new automotive electronic systems in vehicles is becoming more and more abundant. In order to improve the selling point of vehicles, major OEMs have matched a variety of electronic technologies in vehicles to make cars more understandable. smarter. Among them, the application of the automatic parking function (AUTO HOLD) technology enables the driver to avoid unnecessary sliding of the vehicle without the need to brake for a long time and activate the electronic parking brake. [0003] The basic principle of the automatic parking hold system is to actively build pressure through the electronic stability control system unit to keep a certain hydraulic pressure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/18B60W10/06B60W10/18
CPCB60W10/06B60W10/182B60W30/18118B60W2520/10B60W2540/10B60W2540/12B60W2540/16B60W2710/0666B60W2710/186B60W2552/15
Inventor 李定国
Owner NANJING HANXIYUE AUTOMATION TECH CO LTD
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