Automobile contact horn modulation method and equipment
A modulation method and speaker technology, which is applied in the direction of sound-generating devices, electrical components, instruments, etc., can solve the problems of fuzzy life statistics, different speaker life, and large difference in speaker life, so as to improve life and overcome large dispersion of air gap Effect
Active Publication Date: 2014-05-07
湖北三环汽车电器有限公司
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Problems solved by technology
The problem is precisely here. When the current, sound level, frequency and sound quality all meet the speaker factory standards, the life span of each speaker after leaving the factory is quite different.
Especially at present, the quality assurance standards for the life of the horns in various automobile factories all adopt the full life claim index (for example: if the life of the horn is 100,000 times, the claim will be made if it is less than 100,000 times), and the vague life span Statistics (that is, because it is difficult to count the real number of beeps of the horn, the number of beeps per kilometer is drawn up, and then the mileage is converted according to the life span, and the time required for driving according to this mileage), if the driver actually uses the horn per kilometer If the number of beeps is higher than the planned number of times, even the horns with the same life span will actually have different life spans.
What's more, the existing technology is not related to the life index in the production and factory modulation of the automobile contact horn, resulting in the horn not being in the best life state, and the difference is more than 10,000 times, leaving avoidable problems for the horn manufacturer. claim risk
Method used
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[0023] Referring to the accompanying drawings, the specific embodiments of the present invention will be described below.
[0024] figure 1 It is a schematic diagram of the structure of the present invention. First place the horn that has adjusted the air gap 1 on the fixture 16 for positioning; then connect the horn with the horn power supply 11 and the tester 12; connect the horn power supply 11, the horn sounds, and the sampling resistor in the tester 12 obtains a signal , through amplification and A / D conversion to the MCU, the MCU then calculates the duty cycle of the speaker; then compares the measured duty cycle with the pre-input value, if there is a difference, it is fed back to the driver 13 and controls the stepping motor 14 is rotated accordingly, and the adjusting rod 17 connected to the stepping motor is adjusted to the screw 2, so as to realize the change of the duty ratio of the horn. Repeat the above modulation steps until the duty cycle of the speaker can b...
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The invention relates to manufacturing of contact electric horns for motor vehicles, in particular to an automobile contact horn modulation method and equipment. The invention has a purpose of seeking a novel horn modulation method on the basis of finding that duty ratio is associated with the service life of the horn so that the horn reaches the service life state, which the horn should reach, so as to reduce the claim risk. While the horn is compared with the prior art, index control is provided for the service life of the horn while the horn is finished in the factory; and the service life of the horn can be integrally prolonged so that the after-sale claim is reduced by at least 500 PPM while being compared with the current after-sale claim; moreover, the performance requirement of the horn can be also assured without too high air gap precision so that the difficulty of large air gap discreteness of the horn is overcome.
Description
technical field [0001] The invention relates to the manufacture of a contact electric horn for a motor vehicle, in particular to a modulation method and equipment for an automobile contact horn. Background technique [0002] A traditional automotive horn with contacts (hereinafter referred to as the horn) is provided with a screw on the contact path to adjust the on-off of the horn contacts, and then control the electrification state of the horn coil. The modulation of the speaker in the traditional technology is the adjustment of the screw. The modulation standard is: as long as the "buzzing point" does not appear when the upper limit of the operating voltage of the speaker is adjusted, and the current shown does not exceed the standard, the speaker is qualified. Although the modulation of this horn is simple, its working life is not long, so electronic horns with longer lifespans that can adjust the frequency of the horn and the duty cycle emerge as the times require, such...
Claims
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Inventor翁泽忠高章建
Owner湖北三环汽车电器有限公司