Afterloading logistics vehicle ADAS system based on multiple sensors

Abstract

The invention discloses an after-loading logistics vehicle ADAS system based on multiple sensors. The after-loading logistics vehicle ADAS system comprises an ADAS controller, a proportional air valve, an air pressure sensor and an electric control normally-closed valve. The ADAS controller is connected with the proportional air valve and the electric control normally-closed valve; the proportional air valve and the air pressure sensor are connected with a vehicle body relay valve; and the electric control normally-closed valve is connected with a tractor braking main valve of the vehicle body. The proportional air valve and the air pressure sensor are additionally arranged on the braking air path of the rear-loading logistics vehicle, so that accurate control and closed-loop adjustment of the braking air pressure are realized, and the purposes of improving the stability of a braking system and improving the driving safety of the logistics vehicle are achieved.

Description

Technical Field

[0001] The present invention relates to an auxiliary driving system for a post-loading logistics vehicle, and in particular to an ADAS system for a post-loading logistics vehicle based on multiple sensors. Background Art

[0002] With the rapid development of the logistics industry, the safety and intelligence level of logistics vehicles have become the focus of the industry. ADAS (Advanced Driver Assistance System), as an advanced vehicle safety system, can perceive the vehicle's surrounding environment in real time through a variety of sensors to improve driving safety.

[0003] However, the application of existing aftermarket ADAS systems on logistics vehicles still has certain limitations. Traditional aftermarket logistics vehicle ADAS systems only provide warning information such as lane departure and vehicle distance being too close, and have no emergency braking function. In traditional processes, the brake control modification of aftermarket ADAS systems with some emergency braking functions is also achieved by modifying the brake pedal. By installing a motor near the brake pedal in the cab, the motor is rigidly connected to the brake pedal with a physical hard wire or connecting rod. The controller controls the start of the motor to drive the brake pedal to achieve vehicle braking. The overall detection accuracy is not high and the reliability is poor.

[0004] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0005] In order to solve the above technical problems, the present invention proposes a multi-sensor based ADAS system for a rear-loading logistics vehicle, so as to achieve the purpose of improving the stability of the braking system and improving the driving safety of the logistics vehicle.

[0006] To achieve the above object, the technical solution of the present invention is as follows:

[0007] A multi-sensor based ADAS system for a post-loading logistics vehicle, comprising an ADAS controller, a proportional air valve, an air pressure sensor and an electronically controlled normally closed valve;

[0008] The ADAS controller is connected to the proportional gas valve and the electrically controlled normally closed valve;

[0009] The proportional air valve and the air pressure sensor are connected to the vehicle body relay valve;

[0010] The electrically controlled normally closed valve is connected to the tractor brake master valve of the vehicle body.

[0011] The present invention realizes accurate control and closed-loop regulation of the brake air pressure by adding a proportional air valve and an air pressure sensor to the brake air circuit of the rear-loading logistics vehicle, thereby improving the stability of the brake system and the driving safety of the logistics vehicle.

[0012] Further preferably, the air pressure sensor detects the air pressure of the proportional air valve and sends the detection result to the ADAS controller.

[0013] Preferably, the vehicle body posture is further detected by a gyro sensor, and the gyro sensor is connected to the ADAS controller. By installing a gyro sensor, the vehicle body posture can be accurately determined, which provides strong support for automatic emergency braking and further improves driving safety performance.

[0014] Further preferably, the proportional air valve and the air pressure sensor are installed on the original vehicle brake pipeline of the after-loading logistics vehicle.

[0015] Further preferably, the electrically controlled normally closed valve can control the braking sequence of the trailer and the tractor.

[0016] The present invention has the following advantages:

[0017] 1. The present invention realizes precise control and closed-loop regulation of the brake air pressure by adding a proportional air valve and an air pressure sensor to the brake air circuit of the rear-loading logistics vehicle, thereby improving the stability of the brake system and the driving safety of the logistics vehicle.

[0018] 2. The present invention realizes accurate judgment of vehicle body posture by adding a gyro sensor, provides strong support for automatic emergency braking, and further improves driving safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0020] Figure 1 It is a schematic diagram of the assembly of a multi-sensor-based post-loading logistics vehicle ADAS system disclosed in an embodiment of the present invention;

[0021] Figure 2 A system schematic diagram of a multi-sensor based post-loading logistics vehicle ADAS system disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] The present invention provides an ADAS system for a rear-loading logistics vehicle based on multiple sensors. The working principle of the system is to achieve precise control and closed-loop regulation of the brake air pressure by adding a proportional air valve and an air pressure sensor to the brake air circuit of the rear-loading logistics vehicle, thereby improving the stability of the brake system and the driving safety of the logistics vehicle.

[0024] The present invention is further described in detail below with reference to examples and specific implementation modes.

[0025] like Figure 1 and Figure 2 As shown, a multi-sensor based ADAS system for a post-loading logistics vehicle includes an ADAS controller, a proportional air valve, an air pressure sensor, an electronically controlled normally closed valve and a gyroscope sensor;

[0026] The ADAS controller is connected to the proportional gas valve and the electrically controlled normally closed valve;

[0027] The proportional air valve and air pressure sensor are connected to the vehicle body relay valve; the proportional air valve and air pressure sensor are installed on the original vehicle brake pipeline of the after-loading logistics vehicle. The air pressure sensor detects the air pressure of the proportional air valve and sends the detection result to the ADAS controller. By adding the proportional air valve and air pressure sensor, the precise control and closed-loop regulation of the brake air pressure are achieved, which improves the stability and reliability of the braking system.

[0028] The electronically controlled normally closed valve is connected to the main brake valve of the tractor on the vehicle body. By installing an electronically controlled normally closed valve and controlling the opening time of the normally closed valve, the braking sequence of the trailer and the tractor can be controlled to avoid the problem of vehicle loss of control caused by the trailer pushing the front in emergency braking.

[0029] The gyro sensor is connected to the ADAS controller. The gyro sensor can accurately judge the posture of the vehicle body, providing strong support for automatic emergency braking.

[0030] By adding different sensors to the brake lines [adding different sensors can directly brake the original brake lines without affecting the original brake system], in conjunction with air pressure sensors and gyroscope sensors as well as cameras and millimeter-wave radars installed on the vehicle, precise control of the vehicle's braking system and accurate judgment of the vehicle's posture can be achieved, thereby improving the driving safety and intelligence level of logistics vehicles.

[0031] The deceleration closed-loop control strategy ensures stability and safety during emergency braking, effectively avoiding safety accidents caused by improper braking.

[0032] Specifically, when the target in front of the vehicle meets the emergency braking conditions, the ADAS controller will determine whether the vehicle meets the emergency braking conditions based on the body posture data fed back by the current gyroscope; when the emergency braking conditions are met, the ADAS controller sends a corresponding opening request to the proportional air valve to make it reach the target air pressure, and uses the air pressure sensor to determine the opening of the proportional air valve in real time to achieve a closed-loop air pressure control. At the same time, based on the vehicle speed and gyroscope acceleration information, it determines in real time whether the current vehicle deceleration meets expectations, and dynamically adjusts the proportional valve opening based on the real-time status of the vehicle and the target to achieve closed-loop deceleration control. In order to ensure driving safety, the electronically controlled normally closed valve will open several milliseconds later, and the trailer brake master valve and the tractor brake master valve will receive the brake signal in succession, open the air outlet valve, and the high-pressure gas will enter each brake cylinder through the pipeline for braking. This improves driving safety.

[0033] Through the above method, the ADAS system based on multi-sensor for rear-loading logistics vehicles provided by the present invention realizes precise control and closed-loop adjustment of the brake air pressure by adding a proportional air valve and an air pressure sensor to the brake air circuit of the rear-loading logistics vehicle, thereby achieving the purpose of improving the stability of the braking system and improving the driving safety of the logistics vehicle.

[0034] The above is only a preferred implementation of a multi-sensor based post-loading logistics vehicle ADAS system disclosed in the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all fall within the scope of protection of the present invention.

Claims

1. A multi-sensor based ADAS system for post-loading logistics vehicles, characterized in that: Contains ADAS controller, proportional air valve, air pressure sensor and electronically controlled normally closed valve; The ADAS controller is connected to the proportional gas valve and the electrically controlled normally closed valve; The proportional air valve and the air pressure sensor are connected to the vehicle body relay valve; The electrically controlled normally closed valve is connected to the tractor brake master valve of the vehicle body.

2. The multi-sensor based post-loading logistics vehicle ADAS system according to claim 1, characterized in that: The air pressure sensor detects the air pressure of the proportional air valve and sends the detection result to the ADAS controller.

3. The multi-sensor based post-loading logistics vehicle ADAS system according to claim 1, characterized in that: It also includes a gyro sensor for detecting the posture of the vehicle body, and the gyro sensor is connected to the ADAS controller.

4. The multi-sensor based post-loading logistics vehicle ADAS system according to claim 1, characterized in that: The proportional air valve and the air pressure sensor are installed on the original vehicle brake pipeline of the after-loading logistics vehicle.

5. The multi-sensor based post-loading logistics vehicle ADAS system according to claim 1, characterized in that: The electronically controlled normally closed valve can control the braking sequence of the trailer and the tractor.

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