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Dual 32-channel audio switching and relay output device

A technology of relay output and channel input, applied in the direction of speaker distribution signal, etc., can solve the problems of low number of audio channels, high cost, incomplete functions, etc., and achieve the effect of improving integration and expansibility

Inactive Publication Date: 2019-01-25
南京擎能自动化设备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects of low number of audio channels, incomplete functions, and high cost of existing furnace tube monitoring and alarm devices, and propose a dual 32-channel audio switching and relay output device that is easy to operate and has recording and relay output functions.

Method used

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  • Dual 32-channel audio switching and relay output device
  • Dual 32-channel audio switching and relay output device

Examples

Experimental program
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Embodiment Construction

[0017] Such as figure 1 As shown, a dual 32-channel audio switching and relay output device, its structure includes a 32-channel channel input module 1, an external control interface 2, a multi-channel selection switching module 3, an address control module 4, an interlock circuit 5, and a preprocessing circuit 6. Power amplifier 7, loudspeaker 8, relay control circuit 9, recording and playback control circuit 10, expansion circuit 11; wherein the output end of expansion circuit 11 is connected to the input end of 32-channel input module 1, and the output end of 32-channel input module 1 is connected to The first input terminal of the demultiplexing switching module 3, the first output terminal of the demultiplexing switching module 3 is connected to the input end of the recording and playback control circuit 10, and the second output terminal of the demultiplexing switching module 3 is connected to the preprocessing circuit 6 The input end, the output end of the preprocessing...

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Abstract

The invention provides a dual 32-channel audio switching and relay output device. A 32-channel input module is connected with an expansion circuit in that structure, a 32-channel input module is connected with a multiplex selection switching module, a multiplex selection switching module is connected with a recording and reproducing control circuit and a preprocessing circuit, and the preprocessing circuit is connected with a power amplifier and a loudspeaker; The external control interface is connected with an address control module and an interlock circuit, and the interlock circuit is connected with a multiplexing switch module and a relay control circuit. The invention has the advantages that 1) the programmable device is adopted to improve the integration and expansibility of the circuit; 2) the number of channels can be multiplied by adding the expansion circuit; 3) the recording and reproducing functions of the sound signal are added, and the reproduction and the original monitoring adopt the same set of power amplifier circuit; 4) the output functions of the relay and the digital signal are added.

Description

technical field [0001] The invention relates to a dual 32-channel audio switching and relay output device, which belongs to the technical field of pipeline system monitoring. Background technique [0002] Boiler tube leakage automatic alarm device adopts sound wave measurement and signal processing technology to realize early alarm for boiler "four tubes" (water wall tube, superheater tube, reheater tube, economizer tube) leakage. At home and abroad in the early 1980s, research on early detection technology for boiler tube leakage was carried out, and products were put into commercial application one after another. Especially after the 1990s, this product was widely used in domestic large-capacity power generation boilers. The technology and performance of the products are also more mature and reliable. [0003] With the development of power generation technology, modern power generation boilers have entered the era of large capacity and high parameters. The number of boile...

Claims

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Application Information

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IPC IPC(8): H04R3/12
CPCH04R3/12
Inventor 陈军
Owner 南京擎能自动化设备有限公司