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Vehicle-mounted sound system and loudspeaker open circuit detection method thereof

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: 2021-08-10
SUZHOU SONAVOX ELECTRONICS
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  • Summary
  • 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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  • Vehicle-mounted sound system and loudspeaker open circuit detection method thereof
  • Vehicle-mounted sound system and loudspeaker open circuit detection method thereof
  • Vehicle-mounted sound system and loudspeaker open circuit detection method thereof

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Embodiment Construction

[0035] The preferred embodiments of the present invention will be described in detail below in conjunction with 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 understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0036] As shown in this specification and claims, the terms "comprising" and "comprising" only suggest the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements. As used herein, the term "and / or" includes any combinati...

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PUM

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Abstract

The invention discloses a vehicle-mounted sound system and a loudspeaker open circuit detection method thereof. The vehicle-mounted sound system comprises a power amplifier used for driving a loudspeaker electrically connected with the power amplifier; a control module which is used for controlling the power amplifier and is provided with an output port and an input port; an open circuit detection circuit which is provided with a first connecting end and a second connecting end which are electrically connected with two groups of leads of the loudspeaker respectively, wherein the open circuit detection circuit further comprises a switching circuit, and the switching circuit is connected between the output port of the control module and the first connecting end so as to be controlled by a control signal from the output port to connect or disconnect the output port and the first connecting end. The input port and the second connecting end of the control module are electrically connected to a node, and voltage is connected to the node; and the control module is used for enabling the open circuit detection circuit through the output port to judge whether the loudspeaker is open according to the signal received by the input port. According to the invention, loudspeaker open circuit detection can be realized with low cost.

Description

technical field [0001] The invention relates to an audio system, in particular to a vehicle audio system and a loudspeaker open circuit detection method 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. This type of power amplifier chip is expensive and expensive. 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. Contents of the invention [0003] In view of the above problems, an object of the present invention is to provide a car audio system, which can realize the speaker open circuit detection of the car audio system at a lower cost. [0004] Another object of the present invention is to provide a loudspeaker open circuit detection method of a car audio system, which can realize the speaker open circuit detection of a car ...

Claims

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Application Information

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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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