One-to-one master-slave cooperative line control system and sightseeing bus composed of same

Abstract

The utility model belongs to vehicle braking technical field discloses a one -tow one master -slave collaborative line control brake system, including main vehicle and trailer, be provided with main vehicle brake pedal, pedal sensor, main vehicle controller, at least one main vehicle tire sensor and main vehicle brake actuating mechanism on main vehicle, be provided with trailer controller, at least one trailer tire sensor and trailer brake actuating mechanism on trailer, data transmission is carried out between main vehicle controller and trailer controller. Main vehicle controller controls main vehicle brake according to pedal signal and main vehicle tire parameter, and sends brake command or information to trailer controller, and trailer controller combines received command or information and trailer tire parameter control trailer collaborative brake. The utility model realizes main trailer collaborative brake and tire state real -time monitoring, improves brake response speed and effect, shortens brake distance, enhances vehicle controllability and safety, and is applicable to sightseeing car etc.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle braking technology, specifically relating to a one-to-one master-slave coordinated wire control braking system and a sightseeing vehicle composed of it. Background Technology

[0002] Currently, in traditional one-to-one vehicle braking systems (e.g., a combination of a tractor and trailer), the braking coordination between the tractor and trailer is often poor. When the driver applies the brakes to the tractor, the trailer, lacking an effective coordination mechanism, often fails to respond to the tractor's braking intentions in a timely and accurate manner. This can lead to a series of problems: First, the braking distance increases significantly because the trailer's braking force fails to be applied synchronously with the tractor, and may even exert a pushing effect on the tractor; second, the overall handling performance of the vehicle decreases, especially under emergency braking or slippery road conditions, making it prone to dangerous situations such as fishtailing and instability, thus seriously affecting driving safety.

[0003] Furthermore, existing technologies generally lack the capability for real-time and comprehensive monitoring of the tire status of both the tractor and trailer. Tires are the only components of a vehicle in contact with the road surface, and their status (such as tire pressure, temperature, and engine speed) is crucial to braking performance and driving safety. Without this real-time data, the braking system struggles to perform precise and adaptive braking control based on actual road conditions and the vehicle's own dynamic state (such as whether the tires are about to lock up, overheat, or have insufficient tire pressure).

[0004] Therefore, there is an urgent need in this field for a new type of braking system that can not only achieve efficient coordinated braking between the tractor and trailer to shorten braking distance and improve handling and safety, but also has the function of real-time monitoring of the tire status of the tractor and trailer, so as to provide data support for achieving more intelligent and precise braking control. Summary of the Invention

[0005] Purpose of the invention: The purpose of this utility model is to address the shortcomings of the existing technology by providing a one-to-one master-slave coordinated brake-by-wire system, which aims to achieve efficient coordinated braking between the master vehicle and the trailer, and has a real-time tire status monitoring function, thereby improving braking response speed, shortening braking distance, enhancing vehicle handling and safety, and improving the system's intelligence level.

[0006] Technical solution: The one-to-one master-slave cooperative linear control braking system of this utility model includes a master vehicle and a trailer, which are connected by a connecting device. The key feature of this system is that it also includes:

[0007] A master vehicle brake pedal is installed on the master vehicle, and a pedal sensor is connected to the master vehicle brake pedal. The pedal sensor is used to detect the operation signal of the master vehicle brake pedal. A master vehicle controller is electrically connected to the pedal sensor and is used to receive the operation signal. At least one master vehicle tire sensor is installed on the tire of the master vehicle and is used to detect the parameters of the master vehicle tire and send them to the master vehicle controller.

[0008] The system includes a main vehicle brake actuator electrically connected to the main vehicle controller for performing main vehicle braking according to the instructions of the main vehicle controller; a trailer controller mounted on the trailer; at least one trailer tire sensor mounted on the trailer tire for detecting trailer tire parameters and sending them to the trailer controller; a trailer brake actuator electrically connected to the trailer controller for performing trailer braking according to the instructions of the trailer controller; and a wireless communication module for enabling data transmission between the main vehicle controller and the trailer controller.

[0009] The main vehicle controller controls the main vehicle braking actuator to brake based on the received operation signal and the main vehicle tire parameters, and sends the braking command or related information to the trailer controller through the wireless communication module; the trailer controller controls the trailer braking actuator to perform coordinated braking based on the received braking command or related information and the trailer tire parameters.

[0010] To further improve the above technical solution, both the main vehicle tire sensor and the trailer tire sensor include a pressure sensor, a temperature sensor, and a speed sensor.

[0011] Furthermore, each of the four tires of the main vehicle is equipped with a tire sensor.

[0012] Furthermore, the trailer braking actuator is an electro-hydraulic braking system.

[0013] Furthermore, the main vehicle braking actuator is an electronic parking brake integrated system assembly or a brake motor that includes electronic control.

[0014] The present invention also provides a sightseeing vehicle including the above-described one-to-one master-slave cooperative linear control braking system.

[0015] Beneficial effects: Compared with the prior art, the advantages of this utility model are as follows: By setting a pedal sensor on the brake pedal of the main vehicle and transmitting the braking intention of the main vehicle controller to the trailer controller through a wireless communication module, rapid coordinated braking between the main vehicle and the trailer is achieved. The trailer can respond promptly according to the braking needs of the main vehicle and its own tire condition, improving the braking response speed and overall braking effect, effectively shortening the braking distance, and thus significantly improving vehicle handling and driving safety.

[0016] By installing tire sensors on both the tractor and trailer tires, key parameters of each tire, such as pressure, temperature, and speed, can be monitored in real time. This real-time data provides accurate vehicle status information to the tractor and trailer controllers, enabling the system to perform more precise and intelligent braking control based on actual road conditions and vehicle dynamics, such as preventing wheel lock-up and optimizing braking force distribution.

[0017] The tractor controller and trailer controller communicate via a wireless communication module, enabling data transmission and command exchange between them. This achieves information sharing and closed-loop collaborative control between the tractor and trailer. This design not only improves control flexibility and reliability but also enhances the overall intelligence of the braking system, laying the foundation for more advanced driver assistance functions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall architecture of the one-to-one master-slave collaborative linear control braking system of this utility model;

[0019] Figure 2 This is the control principle diagram of the one-to-one master-slave collaborative linear control braking system in this utility model. Detailed Implementation

[0020] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings, but the protection scope of this utility model is not limited to the described embodiments.

[0021] Example 1: Refer to Figure 1 This diagram schematically illustrates the overall architecture of an embodiment of the one-to-one master-slave cooperative wire-controlled braking system of this utility model. This system is mainly applied to systems consisting of a master vehicle (…). Figure 1 (as shown on the left) and trailer ( Figure 1 The vehicle system (shown on the right) consists of components such as a sightseeing vehicle. The main vehicle and trailer are connected by a conventional coupling device.

[0022] Reference Figure 1 Left side and Figure 2 The main vehicle section shown includes:

[0023] Driver's brake pedal: The driver uses this pedal to signal the intention to brake.

[0024] The pedal sensor 101 serves as a driver operation input. The sensor is installed on or linked to the main vehicle brake pedal and is used to detect the driver's operation signals on the brake pedal in real time, such as pedal travel, depressing force, or opening, and convert these operation signals into electrical signals.

[0025] Main vehicle controller VCU: In Figure 2In the middle, the main vehicle controller (VCU) is electrically connected to the pedal sensor and receives the operation signal from the pedal sensor as the main input for the driver's braking needs. The EPBI assembly receives signals from the "VCU" (Vehicle Control Unit).

[0026] Main vehicle tire sensor 102: such as Figure 1 As shown, a master vehicle tire sensor 102 is installed on each of the four tires of the master vehicle. Each master vehicle tire sensor 102 is used to detect the parameters of that tire and send these parameter signals to the master vehicle controller VCU. These parameters include tire pressure, tire temperature, and tire speed. Therefore, each master vehicle tire sensor can integrate a pressure sensor, a temperature sensor, and a speed sensor.

[0027] Main vehicle braking actuator: In this embodiment, the main vehicle braking actuator adopts the following... Figure 2 The EPBI (Electronic Parking Brake Integrated) assembly shown is electrically connected to the vehicle control unit (VCU) via CAN bus such as CANH and CANL, and discrete signal lines such as D00-D03. The EPBI assembly integrates a control unit and a brake motor (e.g., Figure 2 The "M left rear wheel motor" and "M right rear wheel motor" are indicated on the label. The vehicle control unit (VCU) calculates braking commands based on received pedal operation signals and parameters from the vehicle's tire sensors, and sends these commands to the EPBI assembly via signal lines or the CAN bus. The EPBI assembly then drives its internal brake motors to apply precise braking force to the vehicle's wheels. The EPBI assembly can also receive signals from the brake fluid level sensor and respond to the EFB switch's self-reset operation.

[0028] Reference Figure 1 The trailer shown on the right includes:

[0029] Trailer controller: It is integrated into the trailer brake actuator (such as EHB) or is a separate ECU module installed on the trailer.

[0030] Trailer tire sensors: such as Figure 1 The trailer tire sensors 202, located on each wheel of the right-side trailer and similar to the driver's tire sensors 102, are installed on the trailer tires to detect tire parameters (such as pressure, temperature, and speed) and send these parameter signals to the trailer controller. Similarly, each trailer tire sensor can integrate a pressure sensor, a temperature sensor, and a speed sensor.

[0031] Trailer brake actuator: such as Figure 1As shown on the right, the trailer brake actuator adopts an electro-hydraulic braking system 201 (EHB), which is electrically connected to the trailer controller. According to the braking command issued by the trailer controller, the EHB applies braking force to the trailer wheels by controlling the hydraulic unit. Figure 1 The document also shows that a 12V battery 204 powers the EHB and other electronic devices on the trailer, and a DC module 203 ensures that the trailer's electronic control system receives a stable power supply.

[0032] Cooperative Control Section: Wireless Communication Module: This module is integrated into or connected to both the vehicle controller (VCU) and the trailer controller (or the control unit of the EHB). This wireless communication module is used to establish a reliable data communication link between the vehicle controller and the trailer controller.

[0033] System workflow: When the driver presses the brake pedal, the pedal sensor 101 detects the operation signal and sends it to the vehicle controller VCU. Simultaneously, the vehicle controller VCU obtains the real-time status parameters of each tire from the tire sensors 102 on each wheel of the vehicle.

[0034] Based on the driver's braking intention (from the pedal sensor) and the real-time tire status of the vehicle, the vehicle controller (VCU) calculates the target braking force or deceleration required by the vehicle and transmits it to the vehicle's braking actuators (such as...) via the CAN bus or discrete signal lines. Figure 2 The EPBI assembly shown issues a control command. The EPBI assembly then drives its internal brake motor (such as...). Figure 2 The left rear wheel motor M and the right rear wheel motor M shown in the figure cause the main vehicle to brake.

[0035] At the same time, the vehicle controller (VCU) sends the current braking command (e.g., target deceleration, target braking pressure level) or key information related to the braking intention (e.g., vehicle pedal opening, vehicle current wheel speed, etc.) to the trailer controller (or the integrated controller of the EHB) located on the trailer via the wireless communication module.

[0036] After receiving braking commands or related information from the tractor controller, the trailer controller combines this information with the real-time status parameters of each trailer tire obtained from the trailer tire sensors 102 on each wheel to make coordinated braking decisions. For example, the trailer controller ensures that the braking force of the trailer matches the braking demand of the tractor, while also taking into account the adhesion conditions of the trailer tires (such as judging whether they are about to lock up based on wheel speed) to optimize the braking force.

[0037] Finally, the trailer controller sends a control command to the trailer brake actuator 101 (EHB), and the EHB applies corresponding braking force to the trailer wheels, thereby achieving smooth and efficient coordinated braking between the tractor and the trailer.

[0038] pass Figure 1 and Figure 2 As shown in the structure and working method, this utility model can effectively integrate the braking resources of the tractor and trailer, and significantly improve the braking performance, handling and safety of the one-to-one vehicle through precise drive-by-wire technology and real-time tire condition monitoring.

[0039] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and detail may be made to the present invention without departing from the spirit and scope of the appended claims.

Claims

1. A one-to-one master-slave cooperative linear braking system, comprising a master vehicle and a trailer, wherein the master vehicle and the trailer are connected by a connecting device, characterized in that, The system also includes: A master vehicle brake pedal is installed on the master vehicle, and a pedal sensor is connected to the master vehicle brake pedal. The pedal sensor is used to detect the operation signal of the master vehicle brake pedal. The main vehicle controller is electrically connected to the pedal sensor and is used to receive the operation signal; At least one master vehicle tire sensor is installed on the tire of the master vehicle to detect the parameters of the master vehicle tire and send them to the master vehicle controller; The main vehicle braking actuator is electrically connected to the main vehicle controller and is used to execute the main vehicle braking according to the instructions of the main vehicle controller; A trailer controller is installed on the trailer; At least one trailer tire sensor is installed on the tire of the trailer to detect the parameters of the trailer tire and send them to the trailer controller; The trailer brake actuator is electrically connected to the trailer controller and is used to execute trailer braking according to the instructions of the trailer controller; And a wireless communication module, used to realize data transmission between the main vehicle controller and the trailer controller; The main vehicle controller controls the main vehicle braking actuator to brake based on the received operation signal and the main vehicle tire parameters, and sends the braking command or related information to the trailer controller through the wireless communication module; the trailer controller controls the trailer braking actuator to perform coordinated braking based on the received braking command or related information and the trailer tire parameters.

2. The master-slave cooperative linear control braking system according to claim 1, characterized in that, Both the main vehicle tire sensor and the trailer tire sensor include a pressure sensor, a temperature sensor, and a speed sensor.

3. The one-to-one master-slave cooperative linear control braking system according to claim 1 or 2, characterized in that, The main vehicle is equipped with a tire sensor on each of its four tires.

4. The one-to-one master-slave cooperative linear control braking system according to claim 1, characterized in that, The trailer braking actuator is an electro-hydraulic braking system.

5. The one-to-one master-slave cooperative linear control braking system according to claim 1, characterized in that, The main vehicle braking actuator is an electronic parking brake integrated system assembly or a brake motor that includes electronic control.

6. A sightseeing vehicle comprising the one-to-one master-slave cooperative linear control braking system according to claim 1.

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