Intelligent control method and device for electric horn

Abstract

The invention relates to an intelligent control method and an intelligent control device for an electric horn. The dynamic frequency stabilization control method for the electric horn comprises the following steps of: driving the electric horn to work after square wave signals output by a singlechip are subjected to power amplification, then adjusting the frequency of the square wave signals in amode of gradual increasing or gradual reducing with adjusting quantity of 0.005 to 5.0Hz, and meanwhile, detecting the vibration strength of a vibrating diaphragm of the electric horn through the singlechip so as to find the natural vibration frequency of the electric horn. The control device of the electric horn comprises a bowl-shaped bottom shell, a static iron core, a dynamic iron core, a coil, the vibrating diaphragm and a control circuit, wherein the control circuit comprises a micro processing module, a power supply module, a coil driving module, a key input module and a vibrating diaphragm vibration signal detecting module. The invention provides the intelligent control method and the intelligent control device for the electric horn, which can automatically adjust the driving frequency in real time and automatically stabilize the sound pressure level, wherein the device has environment-friendly sound production function and is convenient to connect keys.

Description

technical field [0001] The invention relates to a horn control method and device, in particular to an electric horn intelligent control method and device. Background technique [0002] At present, the driving frequency of electric horns of motor vehicles is fixed before leaving the factory, and the natural frequency of electric horns will change due to changes in environmental conditions during use (for example: changes in temperature between winter and summer, air pressure between plains and plateaus) Changes, etc.) and changes in the mechanical properties of the electric horn can cause its change. Since the resonant peak of the electric horn diaphragm is very sharp, if the driving frequency cannot be adjusted in time, it may cause a sharp drop in the sound pressure level of the electric horn , or even be scrapped, which will affect the prompting effect and increase the energy consumption. For example: Patent No. 98807769.8 The method and device for frequency stabilization...

AI Technical Summary

Problems solved by technology

[0004] Electric horn is a necessary safety signal device on motor vehicles. With the rapid increase of the number of motor vehicles, the sound of electric horns has become one of the main sources of traffic noise. In order to reduce this noise, major and medium cities across the country , especially the bustling roads have implemented banning, although this can reduce noise, but it has brought a lot of inconvenience to drivers and pedestrians, and traffic accidents occur from time to time

At present, special devices are usually used to change the sound pressure level of electric horns. For example, the sound pressure level adjustment device for low-noise motor vehicle electric horns with patent No. 85204415 adjusts the sound pressure level by adjusting the size of the resonance cavity with screws. The adjustment process is complicated. Inconvenient to use

[0005] At present, some key units of electronic horns are triggered by the positive pole of the power supply, and some are triggered by the negative pole of the power supply. Although there are also technical solutions that can be connected to the positive pole of the power supply and the negative pole of the power supply, the circuit is complicated.

For example: the car multi-tone horn of the patent No. 200720176711.X, the key input module has many circuit components and the cost is high

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