Control device for mistakenly stepping on accelerator during reversing of pure electric logistics vehicle

Abstract

The utility model discloses a control device for mistakenly stepping on an accelerator during reversing of a pure electric logistics vehicle, and belongs to the field of driving motor torque control of pure electric vehicles. The control device comprises a vehicle control unit (VCU), a motor control unit (MCU), an accelerator pedal assembly, a reversing radar assembly and a vehicle instrument panel. The reversing radar assembly comprises a reversing radar host, a first reversing radar, a second reversing radar, a third reversing radar and a fourth reversing radar, and the first reversing radar, the second reversing radar, the third reversing radar and the fourth reversing radar are installed at the tail of a vehicle and electrically connected with the reversing radar host. By accurately judging a mistaken stepping scene, quickly responding, judging a mistaken stepping behavior by combining a reversing radar obstacle signal and the opening degree of the accelerator pedal, cutting off motor torque output in time and alarming, the collision risk caused by mistaken stepping of the accelerator during reversing is effectively reduced, the driving safety is improved, and the accident consequence is relieved; and safety accidents during reversing of the pure electric logistics vehicle are effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of drive motor torque control for pure electric vehicles, specifically a control device for accidental accelerator pedal press when a pure electric logistics vehicle is reversing. Background Technology

[0002] Pure electric logistics vehicles are driven by electric motors, which have significantly different power characteristics compared to the engine-driven systems of gasoline vehicles: pure electric vehicles can instantly output maximum torque upon starting, while the torque of a gasoline engine increases slowly with engine speed. Therefore, pure electric logistics vehicles typically accelerate faster than comparable gasoline vehicles. When the driver engages reverse gear, if they mistakenly press the accelerator pedal instead of the brake pedal, the vehicle will reverse rapidly due to the instantaneous high torque output from the motor. Although the maximum reverse speed of electric logistics vehicles is limited, the high torque during the initial acceleration phase can still cause a violent collision with obstacles behind the vehicle, resulting in significant damage. Therefore, those skilled in the art have provided a control device for preventing accidental accelerator pedal depressing when a pure electric logistics vehicle is reversing, to address the problems mentioned in the background section. Utility Model Content

[0003] The purpose of this utility model is to provide a control device for accidental accelerator pedal press when a pure electric logistics vehicle is reversing, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A control device for accidental accelerator pedal depressing when a pure electric logistics vehicle is reversing includes a vehicle controller (VCU), a motor controller (MCU), an accelerator pedal assembly, a reversing radar assembly, and a vehicle instrument panel;

[0006] The reversing radar assembly includes a reversing radar main unit, reversing radar one, reversing radar two, reversing radar three, and reversing radar four. The reversing radar one, reversing radar two, reversing radar three, and reversing radar four are installed at the rear of the vehicle and are electrically connected to the reversing radar main unit.

[0007] The gear shift assembly is electrically connected to the reversing radar host and the vehicle controller (VCU). The vehicle controller (VCU) collects the gear position status of the gear shift assembly in real time.

[0008] The reversing radar host is electrically connected to the vehicle dashboard and the vehicle control unit (VCU) respectively, and is used to convert obstacle detection information into alarm signals and send them to the vehicle control unit (VCU) and the vehicle dashboard.

[0009] The accelerator pedal assembly is electrically connected to the vehicle control unit (VCU), and the VCU collects the accelerator pedal opening percentage in real time.

[0010] The vehicle controller (VCU) is electrically connected to the motor controller (MCU) and is used to send torque control commands to the motor controller (MCU) based on the reversing radar signal and the accelerator pedal opening.

[0011] As a further embodiment of this utility model: the reversing radar 1, reversing radar 2, reversing radar 3 and reversing radar 4 are evenly distributed and installed at the rear of the vehicle.

[0012] As a further improvement of this utility model: when the gear shifter is set to reverse gear, the reversing radar host is activated and controls the reversing radar 1, reversing radar 2, reversing radar 3 and reversing radar 4 to start detecting the distance to obstacles at the rear of the vehicle and send the distance information to the reversing radar host.

[0013] As a further improvement of this utility model: the opening percentage range of the accelerator pedal is 0% to 100%, and when the accelerator pedal is fully depressed, the opening is 97% to 100%.

[0014] As a further solution of this utility model: when the vehicle controller (VCU) simultaneously receives the alarm signal from the reversing radar host and detects that the accelerator pedal opening is ≥97%, it sends a command to the motor controller (MCU) to prohibit torque output and sends an alarm prompt command to the vehicle instrument panel.

[0015] As a further improvement of this utility model, the warning message on the vehicle's dashboard is "Obstacles behind, please do not accelerate suddenly".

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention accurately judges the scenario of accidental accelerator pedal use and responds quickly. By combining the obstacle signal from the reversing radar and the accelerator pedal opening, it judges the accidental pedal use behavior, cuts off the motor torque output in time and issues an alarm, effectively reducing the risk of collision caused by accidental accelerator pedal use when reversing, improving driving safety, mitigating the consequences of accidents, and effectively avoiding safety accidents when pure electric logistics vehicles are reversing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a flowchart illustrating the process of this utility model.

[0020] In the diagram: 1. Vehicle dashboard; 2. Vehicle control unit (VCU); 3. Motor control unit (MCU); 4. Reversing radar main unit; 5. Accelerator pedal assembly; 6. Reversing radar one; 7. Reversing radar two; 8. Reversing radar three; 9. Reversing radar four; 10. Gear shifter assembly. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-2 In this embodiment of the utility model, a control device for accidental accelerator pedal press when a pure electric logistics vehicle is reversing includes a vehicle controller VCU2, a motor controller MCU3, an accelerator pedal assembly 5, a reversing radar assembly, and a vehicle instrument panel 1.

[0023] The reversing radar assembly includes a reversing radar main unit 4, reversing radar one 6, reversing radar two 7, reversing radar three 8 and reversing radar four 9. Reversing radar one 6, reversing radar two 7, reversing radar three 8 and reversing radar four 9 are installed at the rear of the vehicle and are electrically connected to the reversing radar main unit 4.

[0024] The gear shift assembly 10 is electrically connected to the reversing radar host 4 and the vehicle controller VCU2 respectively. The vehicle controller VCU2 collects the gear position status of the gear shift assembly 10 in real time.

[0025] The reversing radar host 4 is electrically connected to the vehicle instrument panel 1 and the vehicle controller VCU2 respectively, and is used to convert obstacle detection information into alarm signals and send them to the vehicle controller VCU2 and the vehicle instrument panel 1.

[0026] The accelerator pedal assembly 5 is electrically connected to the vehicle controller VCU2, and the vehicle controller VCU2 collects the accelerator pedal opening percentage in real time.

[0027] The vehicle controller VCU2 is electrically connected to the motor controller MCU3 and is used to send torque control commands to the motor controller MCU3 based on the reversing radar signal and the accelerator pedal opening.

[0028] Among them, reversing radar 16, reversing radar 27, reversing radar 38 and reversing radar 49 are evenly distributed and installed at the rear of the vehicle; when the gear shift assembly 10 is in reverse gear, the reversing radar host 4 is activated and controls reversing radar 16, reversing radar 27, reversing radar 38 and reversing radar 49 to start detecting the distance of obstacles at the rear of the vehicle and send the distance information to the reversing radar host 4.

[0029] The accelerator pedal opening percentage ranges from 0% to 100%, and when the accelerator pedal is fully depressed, the opening is 97% to 100%. When the vehicle controller VCU2 simultaneously receives the alarm signal from the reversing radar host 4 and detects that the accelerator pedal opening is ≥97%, it sends a command to the motor controller MCU3 to prohibit torque output and sends a warning command to the vehicle instrument panel 1. The warning message on the vehicle instrument panel 1 is "There is an obstacle behind you, do not accelerate suddenly".

[0030] The working principle of this utility model is as follows: when the driver engages reverse gear and presses the accelerator pedal, the gear shift assembly 10 sends a reversing signal to the reversing radar host 4 and the vehicle controller VCU2. The reversing radar host 44 activates reversing radar 1 6, reversing radar 2 7, reversing radar 3 8 and reversing radar 4 9 to start detecting obstacles behind the vehicle.

[0031] If no obstacle is detected, the reversing radar host 4 will not send an alarm message. The vehicle controller VCU2 will send the corresponding torque command to the motor controller MCU3 according to the opening of the accelerator pedal assembly 5, and the vehicle will reverse normally.

[0032] If the reversing radar detects a nearby obstacle, the reversing radar host 4 immediately sends an alarm message to the vehicle controller VCU2 and the vehicle instrument panel 1. After receiving the alarm, the vehicle controller VCU2 monitors the accelerator pedal opening in real time.

[0033] If the opening degree is less than 97%, it is considered normal operation and the torque output is not interfered with.

[0034] If the opening degree is ≥97%, it is determined that the accelerator has been pressed accidentally. The MCU3 is immediately sent with a torque of 0 to prohibit the motor from outputting power. At the same time, the vehicle instrument panel 1 is controlled to display "There is an obstacle behind you. Do not press the accelerator suddenly" to remind the driver to correct the operation.

[0035] This implementation method accurately identifies and quickly responds to accidental acceleration scenarios. By combining the obstacle signal from the reversing radar and the accelerator pedal opening, it judges the accidental acceleration behavior, promptly cuts off the motor torque output, and issues an alarm. This effectively reduces the risk of collisions caused by accidental acceleration while reversing, improves driving safety, mitigates accident consequences, and effectively avoids safety accidents when pure electric logistics vehicles are reversing.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A control device for accidental accelerator pedal press when a pure electric logistics vehicle is reversing, characterized in that: It includes the vehicle control unit (VCU) (2), the motor control unit (MCU) (3), the accelerator pedal assembly (5), the reversing radar assembly and the vehicle instrument panel (1); The reversing radar assembly includes a reversing radar host (4), reversing radar one (6), reversing radar two (7), reversing radar three (8) and reversing radar four (9). The reversing radar one (6), reversing radar two (7), reversing radar three (8) and reversing radar four (9) are installed at the rear of the vehicle and electrically connected to the reversing radar host (4). The gear shift assembly (10) is electrically connected to the reversing radar host (4) and the vehicle controller VCU (2) respectively. The vehicle controller VCU (2) collects the gear position status of the gear shift assembly (10) in real time. The reversing radar host (4) is electrically connected to the vehicle instrument panel (1) and the vehicle controller VCU (2) respectively. The accelerator pedal assembly (5) is electrically connected to the vehicle controller VCU (2). The vehicle controller VCU (2) collects the opening percentage of the accelerator pedal in real time. The vehicle controller VCU (2) is electrically connected to the motor controller MCU (3).

2. The control device for accidental accelerator pedal depressing when a pure electric logistics vehicle is reversing, as described in claim 1, is characterized in that: The reversing radar 1 (6), reversing radar 2 (7), reversing radar 3 (8) and reversing radar 4 (9) are evenly distributed and installed at the rear of the vehicle.

3. The control device for accidental accelerator pedal depressing when a pure electric logistics vehicle is reversing, as described in claim 1, is characterized in that: The accelerator pedal opening percentage ranges from 0% to 100%, and when the accelerator pedal is fully depressed, the opening is 97% to 100%.

4. The control device for accidental accelerator pedal depressing when a pure electric logistics vehicle is reversing, as described in claim 1, is characterized in that: The warning message on the vehicle's dashboard (1) reads "There is an obstacle behind you. Do not accelerate suddenly."

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