Vehicle horn warning system and method
A vehicle and standard prompt sound technology, which is applied in vehicle components, sound signal devices, signal devices, etc., can solve the problems of drivers not hearing external whistle sound and traffic accidents, so as to improve driving safety and reduce the occurrence of accidents. The effect of the possibility of danger
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Embodiment 1
[0032] The structure of the vehicle whistle warning system provided by this embodiment is as follows: figure 1 shown in . There are multiple standard whistle sounds stored in the memory 104, and the multiple standard whistle sounds are obtained by pre-collecting whistle sounds from various vehicle types. Furthermore, the various standard whistle sounds may be classified and stored in the memory 104 according to spectrum characteristics.
[0033] The external sound collector 101 collects external sound of the vehicle in a predetermined frequency band. The predetermined frequency band is set to at least include the frequency bands of all standard whistle sounds, so that all possible whistle sounds outside the vehicle can be collected, and the predetermined frequency band range setting will not be much larger than the frequency bands of all standard whistle sounds, so as to avoid Excessive non-honking noise from outside the vehicle is picked up.
[0034] The sound power tester...
Embodiment 2
[0039] Such as figure 2 As shown in , the vehicle horn warning system provided in this embodiment is based on the first embodiment with the addition of a light sensor 107 . The light sensor 107 is installed at the rear of the vehicle and is used to detect light changes behind the vehicle, and when it detects two consecutive strong changes in light, it sends out an alarm signal.
[0040] The controller 103 receives the alarm signal, and when the sound power value is greater than a predetermined value and the alarm signal is received, controls the car horn 105 to output a second prompt tone. The second prompt tone may be, for example, a voice such as "Please pay attention to the vehicles behind".
[0041] The rear vehicle often reminds the front vehicle to pay attention by flashing high beams and / or honking the horn. Therefore, combining the detected whistle and two consecutive strong light changes at the rear, it can be determined that the rear vehicle wants to obtain the att...
Embodiment 3
[0043] The process flow of the vehicle whistle prompt method provided in this embodiment is as follows: image 3 shown in , including:
[0044] Step 201, collecting external sounds of the vehicle within a predetermined frequency band;
[0045] Step 202, test the sound power of the sound outside the vehicle, when the sound power value is greater than a predetermined value, continue to step 203, otherwise return to step 201;
[0046] Step 203, performing frequency spectrum analysis and comparison on the external sound of the vehicle and various pre-stored standard whistle sounds to obtain corresponding similarity values, and using the standard whistle sound with the highest similarity value as the standard prompt sound;
[0047] Step 205, controlling the speaker in the car to output the standard prompt tone.
[0048] The whistle sounds from various car models are pre-collected as standard whistle sounds. When collecting the external sound of the vehicle, the sound within the ...
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