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An overvoltage detection and reminder system and method for a vehicle-mounted speaker

A technology of overvoltage detection and loudspeaker, which is applied in the direction of instruments, measuring devices, and measuring electrical variables, etc. It can solve problems such as fatigue and disconnection of the lead wire of the loudspeaker, influence on the impedance of the voice coil, and increase in output current, so as to achieve a simple and reliable reminder method. The effect of normal use and prolonging the service life

Active Publication Date: 2021-11-09
HUIZHOU DESAY SV AUTOMOTIVE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The content of the invention is to provide an overvoltage detection and reminder system and method for a vehicle-mounted speaker, which mainly solves the problem that in the existing vehicle-mounted liquid crystal instrument sound drive scheme, changes in the use environment will affect the impedance of the voice coil, making the impedance smaller and the output The current increases, resulting in long-term operation, the lead wire of the speaker is broken due to fatigue, that is, the service life is reduced

Method used

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  • An overvoltage detection and reminder system and method for a vehicle-mounted speaker
  • An overvoltage detection and reminder system and method for a vehicle-mounted speaker
  • An overvoltage detection and reminder system and method for a vehicle-mounted speaker

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Embodiment 1

[0047] Such as Figure 1 to Figure 4 As shown, in order to solve the above problems, this embodiment proposes an overvoltage detection and reminder system for a vehicle-mounted speaker, including a controller 10, and a power amplifier 20 and a power supply module 30 electrically connected to the output end of the controller 10; The other end of the power supply module 30 is connected to the input end of the power amplifier 20, and further includes a voltage detection module 40 respectively connected to the input end of the controller 10 and the output end of the power amplifier 20; the output end of the power amplifier 20 is connected to a speaker.

[0048] In this embodiment, the controller 10 is used to turn on the power amplifier 20 and the power supply module 30 respectively; the power supply module 30 is used to turn on the power amplifier 20; The size of the voltage; it is also used to receive the input current of the controller 10 when it is judged that the voltage of the...

Embodiment 2

[0073] Such as Figure 6 As shown, this embodiment also proposes an overvoltage detection and reminder method for a vehicle-mounted speaker, which mainly includes the following steps:

[0074] S1, power on and start the overvoltage detection system of the car speaker;

[0075] S2, detecting whether the input voltage of the loudspeaker is greater than a first preset value, and if so, sending an early warning signal to the controller;

[0076] S3, the controller receives the warning signal, and calculates whether the number of received warning signals reaches a second preset value, and if so, switches the first power supply to the second power supply.

[0077] Wherein, the first power supply is equal to the power conversion module in Embodiment 1, the second power supply is equal to the power supply module in Embodiment 1, and it must be defined that the output voltage of the second power supply is lower than the output voltage of the first power supply.

[0078] More specific...

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Abstract

The present invention relates to the technical field of vehicle-mounted speaker detection circuits, and in particular to an overvoltage detection and reminder system and method for vehicle-mounted speakers. An amplifier and a power supply module; the other end of the power supply module is connected to the power amplifier; a voltage detection module connected to the input end of the controller and the output end of the power amplifier is also included; the output end of the power amplifier is connected to a speaker. The proposal of the present invention mainly solves the problem that in the existing vehicle-mounted liquid crystal instrument sound drive scheme, the change of the use environment will affect the impedance of the voice coil, making the impedance smaller and the output current larger, resulting in long-term operation. The lead wire of the speaker is broken due to fatigue. line, that is, the problem of reduced service life.

Description

technical field [0001] The invention relates to the technical field of vehicle-mounted loudspeaker detection circuits, in particular to an overvoltage detection and alert system and method for a vehicle-mounted loudspeaker. Background technique [0002] Open-loop control refers to the system control mode without feedback information. When the operator activates the system and puts it into the running state, the system will send the operator's Dezhilin to the controlled object at one time. After that, the operator cannot further control the changes of the controlled object. For the man-machine system designed with open-loop control, the design of operation instructions is very important. Once a mistake is made, irreparable losses will occur. [0003] Most of the existing vehicle-mounted liquid crystal instrument sound drive solutions or navigation, most of the open-loop control, will output different voltages and frequencies to the speakers according to different sound sour...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R29/00G01R19/165
CPCG01R19/16576H04R29/001
Inventor 梁展鸿张铁占周小东
Owner HUIZHOU DESAY SV AUTOMOTIVE
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