CN206231380U - A kind of intelligence may be selected the safe backing device of constant speed - Google Patents

Abstract

The utility model proposes an intelligent selectable constant-speed safe reversing device, which is a mode in the field of automobile active safety that can select and independently identify road conditions and intelligently control reversing at a constant low speed. Including reversing light switch, safe reversing selector switch, safe reversing intelligent control unit, voice prompt unit. When reversing, if the safe constant speed reversing mode is selected, the relay switch action will connect the safe reversing intelligent control unit to the circuit, accompanied by voice prompts. In this mode, the intelligent reversing safety control unit integrates human-vehicle-road information, optimizes and controls the output torque of the corresponding drive motor within an appropriate size, reduces the impact of the accelerator pedal on reversing, and ensures that the vehicle is reversing at a constant low speed. If not selected, reverse according to the original habits and methods, without any influence on normal operation and driving. The devices are all conventional devices, easy to select, low in cost, and small in modification. While actively preventing reversing accidents, it can greatly improve the stability and safety of the driver reversing.

Description

An intelligent selectable constant-speed safe reversing device

technical field

The present application relates to a safety reversing protection device in the field of automobile active safety, specifically an optional device that independently recognizes road conditions and intelligently controls the reversing vehicle at a low and constant speed according to different road conditions.

Background technique

With the development of society, automobiles are increasingly popular as a means of transportation, coupled with the increasingly busy traffic, traffic safety issues are becoming more and more prominent, the safety requirements for driving are becoming more and more stringent, and the number of casualties and property losses caused by the increase in automobile accidents , has become a social problem that cannot be ignored. The traditional concept of automobile safety is also gradually changing. While constantly improving the passive safety system, the active safety system is gradually developed and applied to avoid accidents as much as possible. Especially when the car is reversing, due to emergency or misoperation, the driver mistakenly presses the accelerator pedal as the brake, or the depth of the accelerator pedal is too fast and too fast when the reversing needs to be added, or the road conditions are different and the reversing method is different, resulting in accidents. . At present, common automobile accelerator and brake control systems cannot actively avoid the occurrence of such accidents when reversing.

Utility model content

In order to overcome the above problems existing in the prior art, the utility model provides an optional device that independently recognizes road conditions and intelligently controls the low and constant speed of the reversing vehicle according to different road conditions, so as to actively avoid the above accidents when reversing. A type of security.

The technical solution adopted by the utility model to solve the technical problems is: an intelligent selectable constant-speed safe reversing device, including a reversing light sensor, a safe reversing selection switch, a relay switching switch, a safe reversing intelligent control unit, a voice prompt unit, Drive the motor accordingly. The safe reversing intelligent control unit is composed of a safe reversing intelligent processor, a road condition detection and identification sensor group and a memory storage module.

The original on-board electronic control unit ECU is connected to one contact of the relay switch, and the other contact of the relay switch is connected to the safe reverse intelligent control unit. The safe reversing intelligent control unit is connected with the corresponding drive motor, and the voice prompt unit is connected with the safe reversing intelligent control unit.

The reversing light sensor is a reversing light switch, which is used to detect whether the vehicle enters the reverse gear, as a signal for judging the driver's reversing.

The safe reversing selector switch is for the driver to independently choose whether to enter the constant-speed safe reversing mode, which is input to the safe reversing intelligent control unit after logical operation with the reversing light sensor signal. If it is not selected, the driver will drive and reverse according to the original habit, which will not have any impact on the normal driving of the vehicle.

The corresponding drive motors, including fuel vehicle throttle drive motors, and pure electric vehicle drive motors, enable the vehicle to maintain a constant low-speed reversing (such as setting 5-8km/h for reversing), and can ensure the required speed during reversing under different road conditions. sufficient reverse torque and driving force.

The safe reversing intelligent control unit will automatically detect and identify sensor group signals and memory storage according to the driver's intention (person)—mainly referring to the accelerator pedal position sensor signal, current engine load (vehicle), current reversing road condition (road)—mainly referring to road condition detection The reference value of the module integrates the three kinds of information of people-vehicle-road, continuously optimizes and calculates the output torque of the drive motor, controls the reversing speed to be in a low-speed constant state, and stores this parameter in the memory storage module for future safety in similar situations Reversing intelligent processor test call.

The road condition detection and identification sensor group is used to autonomously detect and identify the current road conditions for reversing, including muddy, wading, gravel, snow, slopes, icing, obstacles (bricks, speed bumps), and the identification results Send it into the safe reversing intelligent processor.

The beneficial effect of the utility model is that after the driver chooses to enter the constant-speed safe reversing mode, the influence of the accelerator pedal on the reversing speed can be reduced, the current reversing road condition can be independently identified, and the data of the memory storage unit is continuously called, optimized and stored again. Regardless of where the driver steps on the accelerator pedal, the car maintains a calculated constant low-speed reversing under different road conditions, and can ensure sufficient reversing torque and driving force required during the reversing process. At the same time, there will be no sudden backward acceleration and excessive acceleration due to the driver stepping on the accelerator pedal. When reversing and crossing obstacles, the vehicle speed will not be too fast because the accelerator pedal is not released in time or the brake pedal is stepped on in time. To a large extent, it actively avoids reversing accidents, effectively guarantees the stability and safety of reversing, and ensures the safety of the vehicle and people inside and outside the vehicle.

The device has little modification to the original vehicle, the device occupies a small space, and the devices are all conventional devices with low cost and easy selection. It is an optional method, which can adapt to the operating habits of different groups of people, adapt to the reversing mode of different road conditions, and meet different requirements. Operational requirements, and the safety of reversing is greatly improved, and it can actively avoid accidents.

The above description is only an overview of the technical solution of the utility model, in order to be able to understand the technical means, objectives and other advantages of the utility model more clearly and to realize and obtain it according to the contents of the specification.

Description of drawings

Figure 1 Schematic diagram of intelligent selectable constant speed safety reversing device for fuel vehicles

Fig. 2 Schematic diagram of intelligent selectable constant speed safety reversing device for pure electric vehicles

Fig. 3 Schematic diagram of vehicle (universal) intelligent selectable constant speed safety reversing device

detailed description

When the driver needs to reverse the car, pressing the safety reverse selection switch (2) is the first trigger signal; the reverse gear is entered, the reverse light is turned on, the light is on, and the reverse light sensor (1) is the second trigger signal, and the two signals are carried out. After AND logic operation, input to the safe backing intelligent control unit (4), as a trigger signal for selecting to enter the constant speed safe backing mode, control the action of the relay switching switch (5), and connect the safe backing intelligent control unit (4) to the original vehicle Between the electric control unit ECU (3) and the circuit of the corresponding drive motor (7), enter the constant speed safe reversing mode, and there is a voice prompt.

Driving in the normal forward direction—there is no signal from the reversing light sensor, or the driver does not press the safe reversing selection switch (2) when reversing—that is, the constant speed safe reversing mode is not selected, and the relay switch (5) will not act , the safe reversing intelligent control unit (4) is not connected in the circuit, then the driver drives and reverses according to the original habit, and the normal running of the vehicle does not have any influence.

Refer to Figure 1 for a schematic diagram of an intelligent selectable constant-speed safe reversing device for fuel vehicles. When the fuel car is reversing, after the driver chooses to enter the constant-speed safe reversing mode, the data of the original on-board electronic control unit ECU (3) enters the safe reversing intelligent control unit (4) through the CAN bus, and after analysis and processing, the control commands are sent to into the throttle drive motor (7A), keep the throttle opening within the calculated range, and reduce the influence of the accelerator pedal on the reverse speed. No matter where the driver steps on the accelerator pedal, the car will maintain a constant low-speed reverse (for example, set the reverse 5-8km/h), and can ensure sufficient reverse torque and driving force required for the reverse process under different road conditions. At the same time, there will be no sudden backward acceleration and excessive acceleration due to the driver stepping on the accelerator pedal, and there will be no phenomenon of excessive speed due to the failure to release the accelerator pedal or step on the brake pedal in time when reversing over obstacles. It can actively avoid reversing accidents to a large extent, effectively ensure the stability and safety of reversing, and ensure the safety of the vehicle and people inside and outside the vehicle.

Refer to Fig. 2 for a schematic diagram of an intelligent selectable constant-speed safe reversing device for a pure electric vehicle. When the pure electric vehicle is reversing, after the driver chooses to enter the constant speed safe reversing mode, the data of the original vehicle electronic control unit ECU (3) enters the safe reversing intelligent control unit (4) through the CAN bus, and after analysis and processing, the control command Send it to the speed control device of the electric vehicle drive motor (7B), adjust the pulse width and time, to control the torque and speed of the drive motor within a suitable limited range, and reduce the impact of the accelerator pedal on the reverse speed. Regardless of where the driver steps on the accelerator pedal, the car maintains a constant low-speed reverse (for example, set the reverse 5-8km/h), and can ensure sufficient reverse torque and driving force required for the reverse process under different road conditions. At the same time, there will be no sudden backward acceleration and excessive acceleration due to the driver stepping on the accelerator pedal. When reversing and crossing obstacles, the vehicle speed will not be too fast because the accelerator pedal is not released in time or the brake pedal is stepped on in time. To a large extent, it actively avoids reversing accidents, effectively guarantees the stability and safety of reversing, and ensures the safety of the vehicle and people inside and outside the vehicle.

After entering the constant-speed safe reversing mode, the analysis and processing process of the safe reversing intelligent control unit (4) is as follows: the original vehicle-mounted electronic control unit ECU (3) sends the current engine load (vehicle) and accelerator pedal position sensor signal (driver's intention); The road condition detection and identification sensor group (42) autonomously detects and identifies the road conditions where the current reversing vehicle is located, including muddy, wading, gravel, snow, slopes, icing, obstacles (bricks, speed bumps), etc.; memory storage module ( 43) in the control data reference value under the same road conditions; the above data is sent to the safe reversing intelligent processor (41), and the three factors of people, vehicles and roads are unified. After processing and analysis, the optimized reversing parameters under different road conditions are obtained. This control command is sent into the corresponding drive motor (7) to perform follow-up operations. And the current calculation result is sent to the memory storage module (43) for storage, which can be called for reference in the next similar situation, and the control result is continuously optimized.

After the reversing is finished, the reversing gear is withdrawn, the reversing lights are turned off, the relay switch is restored, the safe reversing intelligent control unit (4) is not connected to the circuit, and the original driving state is restored.

The above description is only one of the embodiments of the utility model, and is not intended to limit the utility model itself, and the utility model involves modification and optimization (such as embedding the reversing safety control unit in the vehicle-mounted electronic control unit, etc.). Any modifications, equivalent replacements, improvements, etc. made within the scope of the present utility model shall be included in the protection scope of the present utility model.

Claims (6)

1. An intelligent optional constant-speed safe reversing device is characterized in that: it comprises a reversing light sensor (1), a safe reversing selector switch (2), an original vehicle-mounted electronic control unit ECU (3) relay changeover switch (5), Safe reversing intelligent control unit (4), voice prompt unit (6), corresponding drive motor (7); The original on-board electronic control unit ECU (3) is connected to one contact of the relay switch (5), the other contact of the relay switch (5) is connected to the safe reverse intelligent control unit (4), and the reverse light sensor (1) The signal from the safe reversing selection switch (2) is input to the safe reversing intelligent control unit (4), as the trigger signal for the action of the relay changeover switch (5), the control signal of the safe reversing intelligent control unit (4) is input to the corresponding drive motor (7 ), the voice prompt unit (6) is connected with the safe reversing intelligent control unit (4). 2. The intelligent selectable constant-speed safe reversing device according to claim 1, characterized in that: the reversing light sensor (1) is a reversing light on and off switch, which is used to detect whether the vehicle enters the reversing gear, as a judgment driving signal to back up. 3. The intelligent selectable constant-speed safe reversing device according to claim 1, characterized in that: the safe reversing selector switch (2), the driver independently selects whether to enter the constant-speed safe reversing mode, and the reversing light sensor The signal is input to the safe reversing intelligent control unit (4) after AND logic operation. 4. The intelligent optional constant-speed safe reversing device according to claim 1, characterized in that: the safe reversing intelligent control unit (4) is composed of a safe reversing intelligent processor (41), road condition detection and recognition sensor group (42 ) and a memory storage module (43), connected by a CAN signal bus, and packaged together. 5. The intelligent optional constant-speed safe reversing device according to claim 3 is characterized in that: the safe reversing intelligent processor (41) receives and processes the original vehicle-mounted electronic control unit ECU (3), road condition detection sensor group (42) Signal and the reference value of the memory storage module (43), continuously optimize the output torque of the calculation drive motor, control the reversing vehicle speed to be in a low-speed constant state, and store this parameter in the memory storage module (43), for future similar situations Lower safe reversing intelligent processor (41) reference calls. 6. The intelligent selectable constant-speed safe reversing device according to claim 4, characterized in that: the road condition detection and identification sensor group (42) independently detects and identifies the current road conditions of the reversing vehicle, including muddy, wading, gravel , snow, slopes, icing, obstacles, and the recognition results are sent to the safe reversing intelligent processor (41).