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A car audio system and its speaker open circuit detection method

A car audio, open circuit detection technology, applied in the direction of continuity test, electrical components, etc., can solve the problems of high cost, the car power amplifier chip does not have a speaker open circuit diagnosis, and the power amplifier chip is expensive

Active Publication Date: 2022-07-26
SUZHOU SONAVOX ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the power amplifier chip will have its own diagnosis and protection functions for speaker open circuit and short circuit. This kind of power amplifier chip is expensive and costly.
However, in the car audio system, considering the cost, the car power amplifier chip used in the car audio system does not have the function of speaker open circuit diagnosis

Method used

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  • A car audio system and its speaker open circuit detection method
  • A car audio system and its speaker open circuit detection method
  • A car audio system and its speaker open circuit detection method

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Embodiment Construction

[0035] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted here that the descriptions of these embodiments are used to help the understanding of the present invention, but do not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as there is no conflict with each other.

[0036] As shown in this specification and claims, the terms "comprising" and "comprising" only imply that the clearly identified steps and elements are included, and these steps and elements do not constitute an exclusive list. The method or apparatus may also include other steps or elements. As used herein, the term "and / or" includes any combina...

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Abstract

The invention discloses a vehicle-mounted audio system and a method for detecting open-circuit of a speaker thereof. The car audio system includes: a power amplifier for driving a speaker electrically connected to it; a control module for controlling the power amplifier and having an output port and an input port; an open circuit detection circuit with two sets of lead wires for respectively and the speaker The first connection end and the second connection end are electrically connected; the open circuit detection circuit further includes a switch circuit, and the switch circuit is connected between the output port of the control module and the first connection end, and is controlled by the control signal from the output port. The output port and the first connection end are turned on or off; the input port and the second connection end of the control module are respectively electrically connected to a node, and the node is connected to a voltage; the control module is used to enable the open circuit detection circuit through the output port according to the The signal received by the input port determines whether the speaker is open. The present invention can realize open-circuit detection of loudspeaker at low cost.

Description

technical field [0001] The invention relates to an audio system, in particular to a vehicle audio system and a method for detecting open-circuit of a speaker thereof. Background technique [0002] At present, the power amplifier chip will have its own diagnostic and protection functions for speaker open circuit and short circuit, and this type of power amplifier chip is expensive and expensive. However, in the car audio system, considering the cost reasons, the car power amplifier chip used in the car audio system does not have the function of speaker open circuit diagnosis. SUMMARY OF THE INVENTION [0003] In view of the above problems, one object of the present invention is to provide an in-vehicle audio system, which can realize open-circuit detection of speakers of the in-vehicle audio system at a lower cost. [0004] Another object of the present invention is to provide a method for detecting an open-circuit speaker of an in-vehicle audio system, which can realize t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R29/00G01R31/54
CPCH04R29/001G01R31/54H04R3/12H04R2201/028H04R2420/03H04R2420/05H04R2499/13H04R3/00
Inventor 丁洪兵吴渝蓉毛君丽瞿成名
Owner SUZHOU SONAVOX ELECTRONICS
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