An intelligent pickup system for audio signal/data single bus multiplexing

Abstract

The invention discloses an audio signal / data unibus multiplexing intelligent pickup system which comprises a master machine and a slave machine. The master machine and the slave machine are connected through three shielding wires, which are the VCC wire, the GND wire and the audio signal / data line respectively. The slave machine comprises an MCU, a first slave machine motor switch, a second slave machine motor switch and a pickup device. The master machine comprises a master machine MCU, a first master machine motor switch, a second master machine motor switch and a third master machine motor switch. The first slave machine motor switch and the second slave machine motor switch are interlocked when working; the second master machine motor switch and the third master machine motor switch are interlocked when working; through the switching on and off of the motor switches, audio signal / data unibus multiplexing is realized; and through signal monitoring and parameter setting of the pickup device, intelligent pickup is realized, thereby realizing the purpose of the audio signal / data unibus multiplexing intelligent pickup system, greatly simplifying complexity of the circuit and reducing fabricating cost.

Description

Technical field [0001] The invention relates to the field of sound pickup equipment, in particular to an intelligent sound pickup system capable of multiplexing and transmitting data and audio signals. Background technique [0002] The existing pickup system uses three-wire wiring (audio signal, power supply, ground) to transmit audio signals. With the development of technology, it is hoped to be able to transmit data on front-end signals, such as silent signals, normal working signals, and sound For signal processing (EQ adjustment, volume adjustment, noise reduction level, etc.), in the prior art, additional wiring harnesses are added for transmission. On the one hand, it is inconvenient to transform, and on the other hand, it increases costs. Therefore, a single bus multiplexing transmission method for data and audio signals is proposed. [0003] Chinese patent CN201010125972.5 discloses a time-division multiplexed single-bus communication system for power supply, data signal, ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is achieved by the following technical solutions: the transmission scheme of the intelligent sound pickup system of audio signal / data single-bus multiplexing of the present invention is to combine two modes of electrical structural characteristics and single-bus data transmission, one mode The audio signal and the data line are directly transmitted on one line at the same time. The disadvantage of this method is that when the single bus transmits data, the frequency with a higher bit rate is generally used to transmit the audio, resulting in the anti-corrosion of the data transmission signal. The interference is poor, and the interference to the high-frequency part of the sound quality is also relatively large; another way is the time-division multiplexing transmission of audio signals and data, so that the front section is data, the middle section is audio, and the back section is data. The effect of sound quality has been greatly improved, but the delay and interference cannot be ignored

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