Four-wheel electric vehicle control system

Abstract

The invention discloses a four-wheel electric vehicle control system, and belongs to the technical field of electric vehicle control. The system comprises a controller module and a VCU module, the controller module adopts double motors and double controllers, combines a power-assisted steering sensor and a gyroscope, dynamically adjusts the power of the double motors, realizes stable control of a steering posture that a rear wheel does not leave the ground during 10m-diameter turning, and enters a protective speed limit when a vehicle body inclines; the VCU module integrates various peripherals and an IoT module, and remote authorization door opening, vehicle operation data real-time monitoring and overload and overspeed background linkage alarm are achieved. Through combination of an innovative hardware architecture and a control algorithm, the vehicle driving stability and safety are remarkably improved, intelligent remote management is achieved, the problems that a traditional electric vehicle is prone to rollover during steering and monitoring lags behind are effectively solved, and the method has wide application prospects in the fields of logistics transportation and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle control, and in particular to a four-wheel electric vehicle control system. Background Art

[0002] With the widespread use of electric vehicles in logistics, short-distance transportation, and other fields, the demand for vehicle stability, safety, and intelligent control is increasing. Conventional electric vehicles are prone to rollover risks due to insufficient body posture control during steering, especially on narrow roads or around sharp bends, where the rear wheels frequently lift off the ground. Furthermore, real-time monitoring and remote management of vehicle operating conditions are limited, making it impossible to effectively intervene in abnormal conditions such as overloads and speeding. Therefore, there is an urgent need for a vehicle control system that integrates steering posture stability control, body tilt protection, and remote intelligent monitoring to improve vehicle safety and intelligence.

[0003] Therefore, how to provide a four-wheel electric vehicle control system to solve the problems existing in the prior art is of great significance to its application. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a four-wheel electric vehicle control system to solve the problem.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A four-wheel electric vehicle control system includes a controller module and a VCU module. The controller module uses dual motors and dual controllers, with a superimposed steering power sensor to achieve vehicle steering posture stability. The test standard is that the rear wheels do not leave the ground during a 10m diameter turn. The controller module detects vehicle posture via a gyroscope. When a tilt is detected, the controller module activates protective speed limiting to ensure vehicle driving safety. The VCU module integrates peripherals and an IoT module to control the vehicle system of three-wheeled / four-wheeled cargo vehicles. It can remotely authorize door opening and monitor the vehicle's dynamic operation in real time. When the vehicle is overloaded or speeding, a background alarm is triggered.

[0007] Preferably, the dual-motor dual-controller is connected to the two motors respectively for independently controlling the operation of the two motors. The steering assist sensor is installed in the vehicle's steering system for detecting the vehicle's steering angle and steering force, and transmitting the detection signal to the controller module. The controller module adjusts the output power of the dual motors according to the detection signal and the vehicle body posture signal detected by the gyroscope to achieve stability in the vehicle body steering posture.

[0008] Preferably, the gyroscope is installed near the center of gravity of the vehicle and is used to detect the vehicle's body tilt angle, tilt angular velocity and other posture parameters in real time, and transmit the detected posture parameters to the controller in real time. The controller determines whether the vehicle body is tilted based on a preset tilt threshold and the detected posture parameters. If tilt occurs, the controller enters a protective speed limit mode.

[0009] Preferably, the protective speed limit is that the controller limits the maximum speed of the vehicle according to the degree of vehicle body inclination and the preset speed limit rules, so that the vehicle speed is reduced to a safe speed range to ensure vehicle body stability.

[0010] Preferably, the peripherals integrated in the VCU module include but are not limited to a sensor group, a display screen, and an input device. The sensor group is used to collect the vehicle's operating parameters, including vehicle speed, load, battery power, etc.; the IoT module includes a wireless communication unit for realizing wireless communication between the VCU module and the background server to receive remote authorization instructions and send vehicle dynamic operation data.

[0011] Preferably, the remote authorized door opening is achieved through communication between the VCU module and the background server, receiving the authorized door opening instruction sent by the background server, and controlling the vehicle's door lock system to perform the door opening operation; the real-time monitoring of the vehicle's dynamic operation includes the VCU collecting the vehicle's operating data in real time, and sending the data to the background server through the IoT module. The background server processes and analyzes the data to display the vehicle's position, speed, load and other operating status in real time.

[0012] Preferably, the background linkage alarm is when the background server receives the vehicle overload and speeding data sent by the VCU, and compares it with the preset overload and speeding thresholds. If the threshold is exceeded, the alarm mechanism is triggered, including but not limited to issuing a sound alarm, sending an alarm message to a designated person, etc.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. Improved stability: Dual-motor independent control combined with sensor fusion algorithms ensures vehicle body stability during steering, eliminating the risk of rear wheel lift-off.

[0015] 2. Safety protection: Real-time vehicle tilt detection and graded speed limit mechanism effectively reduce the risk of rollover and improve driving safety.

[0016] 3. Intelligent monitoring: Remote authorization to open the door and real-time data monitoring enable real-time management of vehicle status and rapid response to abnormal conditions, meeting the intelligent needs of logistics, transportation and other scenarios.

[0017] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application so that it can be implemented in accordance with the contents of the specification, and to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following is a detailed description of the preferred embodiment of the present application in conjunction with the accompanying drawings.

[0018] Based on the detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without inventive work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0020] Figure 1 is an overall system block diagram of the present invention;

[0021] Figure 2 This is a system block diagram of the VCU module in the present invention;

[0022] Figure 3 This is a system block diagram of the controller module in the present invention.

[0023] In the figure: 001, VCU module; 002, controller module; 101, load sensor; 102, battery level sensor; 103, vehicle speed sensor; 104, VCU; 105, IOT module; 1051, wireless communication unit; 106, backend server; 201, gyroscope; 202, power steering sensor; 203, controller 1; 204, controller 2; 205, motor 2; 206, motor 1. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. In the following description, specific details such as specific configurations and components are provided only to help fully understand the embodiments of the present application. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, for clarity and brevity, the description of known functions and structures has been omitted in the embodiments.

[0025] In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0026] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0027] It should also be noted that, in this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprises," or any other variations thereof are intended to cover non-exclusive inclusion.

[0028] See also Figure 1-3 , the present invention provides a technical solution for a four-wheel electric vehicle control system:

[0029] Controller module 002: It uses dual-motor dual-controller controller 1 203 and controller 2 204, and superimposes a steering assist sensor 202 installed in the vehicle steering system. By detecting the steering angle and steering force signals, combined with the attitude parameters such as the vehicle body tilt angle and angular velocity detected by the gyroscope 201 installed near the center of gravity of the vehicle, the output power of motor 1 206 and motor 2 205 is dynamically adjusted to achieve stable steering attitude control without the rear wheels leaving the ground during a 10m diameter turn; when the gyroscope 201 detects that the vehicle body tilt angle is ≥ the preset threshold, the controller module 002 enters the protective speed limit mode, limiting the maximum vehicle speed to a safe range according to the degree of vehicle body tilt.

[0030] VCU module 001: integrates a sensor group including a load sensor 101, a battery level sensor 102, and a vehicle speed sensor 103, a display screen, an input device and other peripherals, and wirelessly communicates with the backend server 106 through the wireless communication unit 1051 of the IoT module 105 to realize remote authorization to open the door (receive backend door opening instructions → control the door lock system) and real-time monitoring (collect vehicle speed, load and other data → backend processing and analysis → display of operating status); when the backend server 106 determines that the vehicle is overloaded (load > rated value 110%) or speeding (vehicle speed > 60km / h), it triggers linkage alarm mechanisms such as sound alarm and information push.

[0031] The four-wheel electric vehicle control system achieves stable and safe operation and intelligent management of the vehicle through the collaborative work of the controller module and the VCU module. Its working principle is as follows:

[0032] Steering Stability Control: During steering, the steering assist sensor detects steering angle and force, while the gyroscope monitors attitude parameters such as vehicle tilt angle. Both transmit signals to the controller module. Based on these signals, the controller module uses a PID algorithm to calculate the target output power of the dual motors. By adjusting the motor torque difference, the module balances the vehicle's roll moment, ensuring that the rear wheels remain on the ground during a 10-meter-diameter turn.

[0033] Body posture protection: The gyroscope continuously monitors the vehicle's posture in real time. When it detects that the vehicle's tilt angle reaches or exceeds a preset threshold (e.g., 15°), the controller module applies a preset speed limit based on the degree of tilt. The greater the tilt angle, the higher the speed limit, reducing the risk of rollover and ensuring vehicle safety.

[0034] Intelligent Control of the Vehicle Computer System: The VCU module integrates various peripherals to collect real-time vehicle operating data, such as speed, load, and battery charge, and transmits this data to the backend server via the IoT module's wireless communication unit. The VCU module also receives remote authorization to unlock the door from the backend server and controls the vehicle's door locking system to unlock the door. The backend server analyzes and processes this data, monitoring the vehicle's operating status in real time. If overload or speeding is detected, it triggers a series of alarm mechanisms, including audible alarms and notifications to designated personnel.

[0035] The foregoing description is merely a preferred embodiment of the present invention and does not limit the scope of protection of the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any variation, modification, replacement, integration, or parameter change to these embodiments, which is within the spirit and principles of the present invention and which achieves the same functionality through conventional substitutions, without departing from the principles and spirit of the present invention, falls within the scope of protection of the present invention.

Claims

1. A four-wheel electric vehicle control system, characterized in that: It includes a controller module and a VCU module; the controller module adopts dual motors and dual controllers, and superimposes a steering power sensor to achieve vehicle steering posture stability, and the test standard is that the rear wheels do not leave the ground during a 10m diameter turn; the controller module detects the vehicle posture through a gyroscope. When the vehicle posture is detected to be tilted, the controller module enters a protective speed limit to ensure vehicle driving safety; the VCU module realizes vehicle system control of three-wheeled / four-wheeled cargo by integrating peripherals and IoT modules, and can complete remote authorization to open doors and real-time monitoring of vehicle dynamic operation. When the vehicle is overloaded or speeding, the background linkage alarm is triggered.

2. A four-wheel electric vehicle control system according to claim 1, characterized in that: The dual-motor dual controller is connected to the two motors respectively and is used to independently control the operation of the two motors. The steering assist sensor is installed in the vehicle's steering system and is used to detect the vehicle's steering angle and steering force, and transmit the detection signal to the controller module. The controller module adjusts the output power of the dual motors based on the detection signal and the vehicle body posture signal detected by the gyroscope to achieve a stable steering posture of the vehicle body.

3. A four-wheel electric vehicle control system according to claim 1, characterized in that: The gyroscope is installed near the center of gravity of the vehicle and is used to detect the vehicle's body tilt angle, tilt angular velocity and other posture parameters in real time, and transmit the detected posture parameters to the controller in real time. The controller determines whether the vehicle body is tilted based on a preset tilt threshold and the detected posture parameters. If tilt occurs, the controller enters the protective speed limit mode.

4. A four-wheel electric vehicle control system according to claim 1, characterized in that: The protective speed limit is a controller that limits the maximum speed of the vehicle according to the degree of vehicle body inclination and the preset speed limit rules, so that the vehicle speed is reduced to a safe speed range to ensure vehicle body stability.

5. A four-wheel electric vehicle control system according to claim 1, characterized in that: The peripherals integrated in the VCU module include but are not limited to a sensor group, a display screen, and an input device. The sensor group is used to collect vehicle operating parameters, including vehicle speed, load, battery power, etc.; the IoT module includes a wireless communication unit for realizing wireless communication between the VCU module and the background server to receive remote authorization instructions and send vehicle dynamic operation data.

6. A four-wheel electric vehicle control system according to claim 1, characterized in that: The remote authorized door opening is achieved through communication between the VCU module and the background server, receiving the authorized door opening command sent by the background server, and controlling the vehicle's door lock system to perform the door opening operation; the real-time monitoring of the vehicle's dynamic operation includes the VCU collecting the vehicle's operating data in real time, and sending the data to the background server through the IoT module. The background server processes and analyzes the data to display the vehicle's location, speed, load and other operating status in real time.

7. A four-wheel electric vehicle control system according to claim 1, characterized in that: The background linkage alarm is when the background server receives the vehicle overload and speeding data sent by the VCU, and compares it with the preset overload and speeding thresholds. If the threshold is exceeded, the alarm mechanism is triggered, including but not limited to issuing a sound alarm, sending an alarm message to a designated person, etc.

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