An adaptive car horn control system

Abstract

This utility model relates to an adaptive car horn control system, which solves many problems caused by the fixed volume of traditional car horns. It includes a car instrument panel, a car horn volume control circuit, a system control switch, and a sound sensor. The car horn volume control circuit processes the sound sensor signal to identify the noise level of the current vehicle environment, and then determines the horn volume level. It also collects vehicle control signals to identify the current on / off state of the control system. CAN communication interacts with the car instrument panel, displaying the ambient noise level, system status, and current horn volume level. The car horn volume control circuit is a DC-DC boost circuit composed of inductors, capacitors, MOSFETs, and diodes. This utility model can improve road traffic safety and effectively reduce noise pollution.

Description

Technical Field

[0001] This utility model relates to a control system, specifically an adaptive car horn control system. Background Technology

[0002] In modern transportation, cars are the primary mode of transport, and their horns are crucial warning devices. However, traditional car horns typically have only a single, fixed volume setting, which cannot adapt to complex and changing driving environments. In noisy city streets and highways, a fixed-volume horn may be too quiet to effectively attract the attention of pedestrians and other vehicles, thus reducing its warning effect and affecting driving safety. Conversely, in relatively quiet places such as residential areas, near schools, and hospitals, excessively loud horn blasts can easily cause noise pollution, disturbing residents' lives and studies, and causing unnecessary disputes.

[0003] For example, when a car is driving in a busy and noisy urban area, the sounds of surrounding vehicles' engines, tires rubbing against the ground, and crowds mingle together, creating a background noise level that can reach 70 decibels or even higher. In such a situation, if the car horn is too quiet, pedestrians or other drivers may not be able to hear it, increasing the risk of traffic accidents. Conversely, in residential areas at night, the ambient noise level is typically around 30 decibels; a loud horn suddenly blaring can disturb sleeping residents.

[0004] With increasing awareness of driving safety and environmental protection, and the rapid development of intelligent transportation technology, the development of a car horn control system that can automatically adjust the volume according to different background sounds is of significant practical importance and market demand. Utility Model Content

[0005] This invention aims to meet the needs of drivers for different car horn volume levels in different environments, solve many problems caused by the fixed volume of traditional car horns, and improve the driving experience and traffic environment quality.

[0006] This utility model is achieved through the following technical solution:

[0007] An adaptive car horn control system includes a car instrument panel, a car horn volume control circuit, a system control switch, and a sound sensor. The car horn volume control circuit processes the sound sensor signal to identify the noise level of the current vehicle environment, and then determines the horn volume level. It identifies the current switch status of the control system by collecting vehicle control signals, and interacts with the car instrument panel via CAN communication. The car instrument panel can display the ambient noise level, system status, and current horn volume level. The car horn volume control circuit is a DC-DC boost circuit composed of inductors, capacitors, MOSFETs, and diodes.

[0008] Furthermore, the capacitors and inductors are divided into multiple groups and controlled separately to achieve multi-level volume control.

[0009] The beneficial effects of this utility model are:

[0010] 1. Improve road traffic safety: By adaptively adjusting the horn volume under different sound backgrounds, the horn sound can convey warning information more clearly and effectively, reduce traffic accidents caused by improper horn volume, improve road traffic safety, and protect the lives of drivers, passengers, and pedestrians.

[0011] 2. Reduce noise pollution: Avoid noise pollution caused by excessive volume from traditional loudspeakers in some scenarios, especially in noise-sensitive areas such as residential areas and schools. This helps to create a quieter and more harmonious living environment and reduce social conflicts caused by noise. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the present invention;

[0013] Figure 2 It is the car horn volume control circuit. Detailed Implementation

[0014] This invention relates to a horn volume control system, the implementation of which is illustrated in Figure 1. The system controller identifies the current on / off state of the system by acquiring vehicle control signals, processes sound sensor signals to determine the ambient noise level, and then determines the appropriate horn volume level, thus achieving adaptive horn adjustment. In this system, CAN communication interacts with the vehicle's instrument panel, displaying the ambient noise level, system status, and current horn volume level.

[0015] Figure 2The main focus is on the control circuit design for the horn volume in the system's controller. The volume of a car horn is related to the current flowing through it and the horn's inherent characteristics. According to Ohm's law, with constant horn resistance, an increase in voltage leads to an increase in current, strengthening the horn's vibration and thus increasing the volume. Vehicle power supplies are typically 12V or 24V, requiring the controller to dynamically adjust the voltage. This system uses a DC-DC boost circuit to increase the supply voltage across the horn. To achieve energy storage in the boost circuit, inductors and capacitors are incorporated. These alternately store energy to power the car horn. To prevent interference between inductor and capacitor energy storage, a diode is added, enabling single-phase output. To automate the energy switching process, a MOSFET is added, allowing the MOSFET's on / off state to be controlled by a microcontroller-modulated PWM waveform. In this way, the voltage received by the car horn is the sum of the car's power supply and the voltage of the inductor or capacitor, thereby achieving the change of the horn voltage. Based on this, several more sets of capacitors or inductors can be added, each controlled by a controller, to achieve multi-level volume control.

[0016] This utility model has the following features:

[0017] 1. Intelligent environmental perception and dynamic volume adjustment: Breaking through the traditional fixed volume mode of car horns, the system integrates a high-precision environmental sound sensor, which can collect ambient sound signals in real time. Through advanced signal processing algorithms, it accurately analyzes the characteristics of environmental noise intensity, frequency and other features, and automatically adjusts the horn volume to ensure that the horn sound can effectively alert people around without causing noise pollution due to excessive volume.

[0018] 2. Multi-scenario Adaptive Strategy: A rich set of scene recognition models has been built, which can match corresponding volume adjustment strategies according to different usage scenarios, such as urban congested roads, highways, and residential areas. In urban congested roads, where vehicles are dense and noise is complex, the system will appropriately increase the horn volume to highlight the warning effect; while in noise-sensitive areas such as residential areas, the volume will be automatically reduced to avoid disturbing residents.

Claims

1. An adaptive car horn control system, characterized in that: The system includes a car instrument panel, a car horn volume control circuit, a system control switch, and a sound sensor. The car horn volume control circuit processes the sound sensor signal to identify the noise level of the current vehicle environment, and then determines the horn volume level. It also collects vehicle control signals to identify the current switch status of the control system. CAN communication is used to interact with the car instrument panel, which displays the ambient noise level, system status, and current horn volume level. The car horn volume control circuit is a DC-DC boost circuit composed of inductors, capacitors, MOSFETs, and diodes.

2. The adaptive car horn control system according to claim 1, characterized in that: The capacitors and inductors are in multiple groups and controlled separately to achieve multi-level volume control.

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