Adaptive electronic horn
An electronic horn, self-adaptive technology, applied in the direction of sound-generating equipment, instruments, etc., can solve the problem of the sound pressure level drop of the horn, and achieve the effect of maximizing the sound pressure level
Active Publication Date: 2013-06-12
BEIJING JINGWEI HIRAIN TECH CO INC
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Problems solved by technology
The mechanical resonance frequency of the diaphragm will change with the change of ambient temperature and air pressure, but the frequency of the horn has been fixed at the factory, so when the ambient temperature or air pressure changes, the horn will not work at the mechanical frequency of its diaphragm , so that the sound pressure level of the speaker will be seriously reduced
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[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0029] The embodiment of the invention discloses an adaptive electronic horn to realize the automatic detection of the mechanical resonance frequency of the diaphragm of the electronic horn, and make the horn work on the mechanical resonance frequency of its diaphragm to realize the sound pressure of the electronic horn in any environment level maximization.
[0030] Such as figure 1 As shown, a self-adaptive electronic horn includes: a single-chip m...
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The invention discloses an adaptive electronic horn. The adaptive electronic horn comprises an SCM (single chip microcomputer), a horn, a sound pressure level acquiring circuit and a driving circuit, wherein the horn is electrically connected with the SCM; the sound pressure level acquiring circuit and the driving circuit are electrically connected with the SCM and the horn respectively; the SCM is used for generating scanning pulse to scan the vibration frequency of a horn diaphragm and acquiring the frequency data of the horn diaphragm; the sound pressure level acquiring circuit is used for acquiring the vibration sound pressure level of the horn diaphragm and transmitting the sound pressure level data to the SCM; the SCM is used for calculating resonant frequency according to the frequency data and the sound pressure level data and outputting the resonant frequency to the driving circuit; and the driving circuit is used for driving the horn diaphragm according to the received resonant frequency to make a sound. Automatic detection on mechanical resonant frequency of the electronic horn diaphragm is realized, the horn works at the mechanical resonant frequency of the diaphragm, and the sound pressure level of the electronic horn is maximized in any environment.
Description
technical field [0001] The invention relates to the technical field of automotive electronic horns, and more specifically relates to an adaptive electronic horn. Background technique [0002] At present, most of the existing automotive electronic speakers use pulse generating circuits, control drive circuits, and control the on-off of electromagnetic coils to realize the attraction and release of the horn diaphragm and emit a fixed-frequency sound. To maximize the sound pressure level, the frequency needs to be adjusted so that the diaphragm works at its mechanical resonance frequency, which is adjusted and fixed at the factory. The mechanical resonance frequency of the diaphragm will change with the change of ambient temperature and air pressure, but the frequency of the horn has been fixed at the factory, so when the ambient temperature or air pressure changes, the horn will not work at the mechanical frequency of its diaphragm , so that the sound pressure level of the sp...
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IPC IPC(8): G10K9/12
Inventor 贾春冬
Owner BEIJING JINGWEI HIRAIN TECH CO INC