Drive-by-wire chassis for electric vehicle
By using a wire-controlled chassis system on electric vehicles, using multiple sensors to collect data and conduct real-time analysis, the problem of difficulty in achieving accurate braking control on easily slippery or dark ice roads is solved, real-time monitoring and precise control of vehicle status is achieved, and safe driving is ensured.
Patent Information
- Application Number
- CN202421477224.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-26
AI Technical Summary
Existing electric vehicles are difficult to achieve precise braking control on slippery or dark ice roads, resulting in unstable driving of the vehicle.
The wire-controlled chassis system is adopted, including vehicle controllers, wheel speed sensors, multi-axis acceleration sensors, brake pressure sensors, steering angle sensors, steering angular speed sensors and CCD cameras. Data is collected through multiple sensors and conducted real-time analysis to achieve accurate vehicle status monitoring and control.
It effectively avoids the risk of unstable vehicle driving caused by slippery or dark ice roads, and ensures the safe driving and precise braking control of electric vehicles.
Smart Images
Figure CN222793262U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric vehicles, in particular to a wire-controlled chassis for electric vehicles. Background Art
[0002] As society's demand for cars continues to escalate, the core goal of research on electric vehicles, especially intelligent electric vehicles based on driverless technology, is to improve traffic safety performance, optimize road traffic efficiency, and enhance operational capabilities in complex environments. In various application scenarios, intelligent vehicles may face complex working conditions such as high-speed turns, emergency obstacle avoidance, and driving on roads with poor adhesion conditions (such as ice). These working conditions can easily lead to dangerous conditions such as vehicle skidding and loss of driving stability. Therefore, real-time monitoring of vehicle driving status is particularly important.
[0003] When driving a conventional electric vehicle, the driver can rely on his or her own feelings to judge the speed of the vehicle and whether there is a slipping phenomenon; however, for unmanned vehicles, it is necessary to rely on sensors to accurately monitor the vehicle status. Traditional electric vehicles usually use simple wheel speed sensors to monitor wheel speed, but on slippery roads or icy or dark ice roads, slipping is prone to occur when the vehicle speed is too high. At this time, although the wheel speed of the vehicle decreases rapidly after braking, the actual speed of the vehicle does not decrease rapidly, which is not conducive to the accurate and rapid braking control of unmanned vehicles. Utility Model Content
[0004] In order to solve the technical problem that the existing vehicle braking cannot achieve precise control over speed, which is not conducive to accurate and rapid braking control of unmanned vehicles, the present application provides a wire-controlled chassis for electric vehicles.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] A wire-controlled chassis for an electric vehicle comprises a vehicle controller, a wheel speed sensor, a multi-axis acceleration sensor, a brake pressure sensor, a steering angle sensor, a steering angular velocity sensor and a CCD camera, wherein the wheel speed sensor, the multi-axis acceleration sensor, the brake pressure sensor, the steering angle sensor, the steering angular velocity sensor and the CCD camera are all connected to the vehicle controller by signal, the wheel speed sensor is used to measure the wheel speed of the electric vehicle wheel, and the multi-axis acceleration sensor is used to measure the acceleration of the electric vehicle; the vehicle controller is used to receive signals including the wheel speed sensor, the multi-axis acceleration sensor, the brake pressure sensor, the steering angle sensor, the steering angular velocity sensor and the CCD camera, and perform vehicle status analysis and / or control according to the received signals.
[0007] As one of the optimized implementation schemes of the present utility model, the electric vehicle is an automatic driving vehicle.
[0008] As one of the optimized implementation schemes of the utility model, the CCD camera is used to collect road information and transmit the road information to the vehicle controller. The vehicle controller cooperates with the wheel speed sensor, multi-axis acceleration sensor, brake pressure sensor, steering angle sensor, and steering angular velocity sensor to control the vehicle's driving status.
[0009] Compared with the prior art, the advantages of the present invention are: the present invention has multiple sensor functions, and can accurately measure the wheel speed data of the electric vehicle wheels by means of wheel speed sensors, and effectively capture the acceleration changes of the electric vehicle through multi-axis acceleration sensors. Especially for unmanned (automatic driving) electric vehicles, the vehicle controller can receive and process signals from the wheel speed sensors and multi-axis acceleration sensors, and then deeply analyze the vehicle status and implement precise control. This setting cleverly avoids the risks that may be caused by the reduction of wheel speed due to dark ice or slippery areas on the road while the acceleration of the electric vehicle is still large, ensuring real-time monitoring and precise control of the driving status of the electric vehicle, and providing strong protection for the safe driving of the electric vehicle. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.
[0011] Figure 1 This is a structural block diagram of a wire-controlled chassis for an electric vehicle provided by the first embodiment of the utility model.
[0012] Among them: 1. Wheel speed sensor; 2. Multi-axis acceleration sensor; 3. Vehicle controller; 4. Brake pressure sensor; 5. Steering angle sensor; 6. Steering angular velocity sensor; 7. CCD camera. DETAILED DESCRIPTION
[0013] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution 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 the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0014] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0015] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0016] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0017] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0018] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0019] Example:
[0020] See also Figure 1A wire-controlled chassis for an electric vehicle provided in a first embodiment of the utility model comprises a vehicle controller 3, a wheel speed sensor 1, a multi-axis acceleration sensor 2, a brake pressure sensor 4, a steering angle sensor 5, a steering angular velocity sensor 6 and a CCD camera 7. The wheel speed sensor 1, the multi-axis acceleration sensor 2, the brake pressure sensor 4, the steering angle sensor 5, the steering angular velocity sensor 6 and the CCD camera 7 are all connected to the vehicle controller 3 by signal. The wheel speed sensor 1 is used to measure the wheel speed of the wheel of the electric vehicle, and the multi-axis acceleration sensor 2 is used to measure the acceleration of the electric vehicle. The vehicle controller 3 is used to receive signals including the wheel speed sensor 1, the multi-axis acceleration sensor 2, the brake pressure sensor 4, the steering angle sensor 5, the steering angular velocity sensor 6 and the CCD camera 7, and perform vehicle state analysis and / or control according to the received signals.
[0021] Furthermore, the electric vehicle is an autonomous driving vehicle.
[0022] To explain, in this embodiment, through the wheel speed sensor 1, we can accurately measure the wheel speed information of the electric vehicle's wheels; at the same time, with the help of the multi-axis acceleration sensor 2, the acceleration data of the electric vehicle can be effectively measured; for unmanned (automatic driving) electric vehicles, its vehicle controller 3 is responsible for receiving signals from the wheel speed sensor 1 and the multi-axis acceleration sensor 2; based on these real-time transmitted signals, the vehicle controller 3 can accurately analyze and control the vehicle status.
[0023] In addition, specifically, when there is hidden ice or slippery areas on the road, the wheel speed may be affected and reduced. However, through the monitoring of the multi-axis acceleration sensor 2, it can be found that the acceleration of the electric vehicle may still remain at a high level. At this time, the vehicle controller 3 can respond quickly and avoid potential risks caused by changes in road conditions by adjusting the control strategy.
[0024] Furthermore, the CCD camera 7 is used to collect road information and transmit the road information to the vehicle controller 3. The vehicle controller 3 cooperates with the wheel speed sensor 1, the multi-axis acceleration sensor 2, the brake pressure sensor 4, the steering angle sensor 5, and the steering angular velocity sensor 6 to control the vehicle driving state.
[0025] It can be understood that the utility model has multiple sensor functions, and can accurately measure the wheel speed data of the electric vehicle wheel by means of the wheel speed sensor 1, and effectively capture the acceleration changes of the electric vehicle through the multi-axis acceleration sensor 2. Especially for unmanned (automatic driving) electric vehicles, the vehicle controller 3 can receive and process the signals from the wheel speed sensor 1 and the multi-axis acceleration sensor 2, and then deeply analyze the vehicle status and implement precise control. This setting cleverly avoids the risks that may be caused by the reduction of wheel speed due to hidden ice or slippery areas on the road while the acceleration of the electric vehicle is still large, ensuring real-time monitoring and precise control of the driving status of the electric vehicle, and providing strong protection for the safe driving of the electric vehicle.
[0026] Specific examples are used in this article to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the method of the utility model and its core idea. At the same time, for those skilled in the art, according to the idea of the utility model, there will be changes in the specific implementation methods and application scope. Changes and improvements to the utility model will be possible without exceeding the concept and scope specified in the attached claims. In summary, the content of this specification should not be understood as a limitation on the utility model.
Claims
1. A wire-controlled chassis for an electric vehicle, characterized in that: The vehicle comprises a vehicle controller, a wheel speed sensor, a multi-axis acceleration sensor, a brake pressure sensor, a steering angle sensor, a steering angular velocity sensor and a CCD camera. The wheel speed sensor, the multi-axis acceleration sensor, the brake pressure sensor, the steering angle sensor, the steering angular velocity sensor and the CCD camera are all connected to the vehicle controller signal. The wheel speed sensor is used to measure the wheel speed of the electric vehicle wheel, and the multi-axis acceleration sensor is used to measure the acceleration of the electric vehicle. The vehicle controller is used to receive signals including the wheel speed sensor, the multi-axis acceleration sensor, the brake pressure sensor, the steering angle sensor, the steering angular velocity sensor and the CCD camera, and perform vehicle status analysis and / or control according to the received signals.
2. A wire-controlled chassis for an electric vehicle according to claim 1, characterized in that: The electric vehicle is an automatic driving vehicle.
3. A wire-controlled chassis for an electric vehicle according to claim 2, characterized in that: The CCD camera is used to collect road information and transmit the road information to the vehicle controller. The vehicle controller cooperates with the wheel speed sensor, multi-axis acceleration sensor, brake pressure sensor, steering angle sensor, and steering angular velocity sensor to control the vehicle's driving status.