Audio power amplifier capable of automatically detecting fault and provided with backup output

A self-detection, audio power technology, applied in transducer circuits, sensors, signal processing, etc., can solve the problem of no clear solution for detection methods, and achieve the effect of business continuity, cost and time reduction, and easy connection

Active Publication Date: 2017-09-26
江苏华腾智能科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

", and this invention has no clear solution to the detection method

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  • Audio power amplifier capable of automatically detecting fault and provided with backup output
  • Audio power amplifier capable of automatically detecting fault and provided with backup output
  • Audio power amplifier capable of automatically detecting fault and provided with backup output

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Embodiment Construction

[0107] Such as figure 1 , is a working diagram of the audio power amplifier, which includes the following parts: two power input modules (main power input module 1 and backup power input module 5), two output power modules (main output power module 9 and backup output power module 15), Two audio power amplification modules (main audio power amplification module 21 and backup audio power amplification module 31), two power load feedback modules (main power load feedback module 41 and backup power load feedback module 42), an audio processing module 43, A central processing module 46, a data communication module 56, a display module 59 and a power output selection module 60;

[0108] Wherein the main power input module 1, the main power output module 9 and the main audio power amplification module 21 are defined as the main audio power amplifier system, and the backup power input module 5, the backup power output module 15 and the backup audio power amplification module 31 are d...

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Abstract

The invention provides an audio power amplifier provided with a double-power amplifying module. The audio power amplifier is characterized in that a backup module can be directly switched in case of fault occurring in some module inside, so that the continuity and the safety of a broadcasting system can be ensured. The condition of no fault can be fed back or the fault information can be directly displayed during the detection of each module, the startup self-inspection and the full-load detection, and the logging is carried out for inquiring or further treatment. A detection signal can be automatically sent through the audio power amplifier and used for quickly detecting the power amplifying module; the automatically-sent detection signal is sine wave of which the frequency ranges from 20Hz-20kHz, and the sine wave is generated through a sine wave signal generation unit 45; the sine wave of the frequency is 1kHz is treated as a detection signal optimum scheme. According to the audio power amplifier, the signal is subjected to grain adjustment through a digital pre-amplification unit 44 before being input to the audio power amplifying module, so that the signal attenuation which influences the detection can be prevented; in addition, the grain adjustment of the digital pre-amplification unit 44 to the detection signal is variable, and the grain value is determined according to the power amplification output value.

Description

technical field [0001] The invention relates to the field of public broadcasting and sound reinforcement, in particular to an audio power amplifier with self-detection fault and backup output. Background technique [0002] The power amplifier is prone to failure and affects the normal operation of the broadcasting system [0003] Audio power amplifier, commonly known as "amplifier", or "audio power amplifier" for short, is the basic equipment in the public address system and hall public address system, and plays a very important role. Its main function is to amplify the weak signal from the signal source , to drive the speaker to produce sound. Once the power amplifier fails, the speaker will not be able to produce sound, and the transmitted content will not reach the speaker, and the entire public address and hall public address system will be paralyzed and unable to work normally. It cannot guarantee the continuity of the system business, and may cause security incidents....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00
CPCH04R3/00H04R2430/00
Inventor 不公告发明人
Owner 江苏华腾智能科技有限公司
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