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Hot backup method and hot backup device for multi-channel power amplifier

A power amplifier and hot backup technology, applied in the layout of amplifier protection circuit, amplifier combination, etc., can solve the problems of staying, switching work cumbersome, performance impact, etc., to achieve the effect of high accuracy, easy sampling and processing

Active Publication Date: 2011-11-02
GUANGZHOU LEAFUN CULTURE SCI & TECH
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, currently in the sound reinforcement application of professional performances, the power amplifier is a device with a high failure rate, but the backup is still manual backup, that is, it is necessary to reserve a backup power amplifier. When a power amplifier fails, it needs to be operated. Staff manual switching
Using this method, the switching work is cumbersome, a large number of lines need to be connected, and the operation time is long, which will also have a substantial impact on the performance

Method used

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  • Hot backup method and hot backup device for multi-channel power amplifier
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Embodiment Construction

[0039] The present invention will be further elaborated below in conjunction with the accompanying drawings.

[0040] Such as figure 1 Shown, the hot backup method of multichannel power amplifier of the present invention, it comprises:

[0041] 1) Initialization: Define the 1st~mth channel of the channel with n independent power amplifiers as the working channel, and define the m~nth channel as the backup channel, where n is a natural number greater than 1, and m is less than A natural number of n.

[0042] 2) Add a test signal at the input end of each working channel and backup channel, and then detect the output signal of the power amplifier on each working channel in real time. The specific process is: 21) The digital signal on each working channel Add a test signal in the signal processor; 22) Mix the audio input signal and test signal processed by the audio signal processor in each working channel; 23) Mix the audio in each working channel 24) Sampling and processing t...

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Abstract

The invention discloses a hot backup method and a hot backup device for a multi-channel power amplifier with an automatic failure detection function and an automatic failure backup function. A plurality of independent channels of the power amplifier are divided into working channels and backup channels; a test signal is added to the input end of each working channel; signal detection units monitor and sample the output end of the power amplifier on each working channel in real time; if the signal detection unit on each working channel can continuously detect the test signal, the power amplifier on the working channel is proved to work normally; and if the signal detection unit on a certain working channel cannot continuously detect a sampling signal, the power amplifier on the working channel is proved not to work normally, and a signal processing and control unit and a switching management unit correspondingly replaces the power amplifier on the failing working channel by the power amplifier on the backup channel to ensure a loudspeaker on the working channel still can work normally.

Description

technical field [0001] The invention relates to a backup method and backup equipment for a multi-channel audio power amplifier, in particular to a hot backup method and a hot backup device for a multi-channel power amplifier that ensure that a sound reinforcement system can work stably and normally. Background technique [0002] In the sound reinforcement applications of fixed installations in theaters and various mobile theatrical performance sound reinforcement applications, a large number of audio power amplifiers are required to drive various speakers to meet performance needs. Because the power amplifier often works in a high-power state, the power amplifier is seriously heated, and some power amplifiers are prone to damage. If a certain power amplifier fails, the corresponding speaker will stop working. In sound reinforcement applications, often a speaker corresponds to Covering a sound reinforcement area, if any speaker does not work, it will cause one of the sound re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/68H03F1/52
Inventor 李志雄
Owner GUANGZHOU LEAFUN CULTURE SCI & TECH
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