CAN bus-based voice communication system

A CAN bus and voice communication technology, applied in the field of voice communication system, can solve the problem of data transmission only, and achieve the effect of low cost, simple circuit and low power consumption

Inactive Publication Date: 2010-02-10
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current fieldbus is distributed in every corner of automation applications, which brings...

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  • CAN bus-based voice communication system
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  • CAN bus-based voice communication system

Examples

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Embodiment 1

[0021] Embodiment 1: the method of this system is the speech communication system based on CAN bus, speech data is input by microphone, is amplified by speech amplifier, then carries out A / D conversion, after speech data is compressed and packed by speech compression and decompressor Send to the PIC microcontroller, the PIC microcontroller transmits the data to the bus through the CAN transceiver; the information on the bus is received by the CAN transceiver, and then sent to the PIC microcontroller, and then transmitted to the voice compression and decompressor through the PIC microcontroller, and decompressed by it , and then perform D / A conversion, and finally the speaker is driven by the voice amplifier to output the voice signal.

[0022] The device of this system includes PIC microcontroller controller, CAN transceiver, A / D-D / A converter, voice compression and decompression and voice amplifier, voice amplifier is connected with A / D-D / A converter, A / D-D / A conversion The v...

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PUM

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Abstract

The invention relates to a CAN bus-based voice communication system, which belongs to voice communication systems. A method for the CAN bus-based voice communication system comprises the following steps that: voice data is input by a microphone and amplified by a voice amplifier, the amplified voice data is processed by A/D conversion and then is transmitted to a PIC single-chip after being compressed and packed by a voice compressing and decompressing device, and the data is transmitted to the bus through a CAN transceiver; and the voice amplifier of the system is connected with an A/D-D/A converter, the A/D-D/A converter is connected with the voice compressing and decompressing device, the voice compressing and decompressing device is connected with a controller of the PIC single-chip, the controller of the PIC single-chip is connected with the CAN transceiver, and the CAN transceiver is connected to the bus. The CAN bus-based voice communication system has the following advantages that: the CAN bus can monitor monitoring information and system information while performing voice communication, the good voice communication quality can be kept when one CAN bus is shared to performtransmission, the circuit is simple, the power consumption is low, the cost is low, and the method is a novel transmission method in the field of voice communication.

Description

technical field [0001] The invention relates to a voice communication system, in particular to a CAN bus-based voice communication system. Background technique [0002] At present, the field bus has developed into a field bus control system FCS (Field-bus Control System) integrating computer network, field control and production management. The current field bus is distributed in every corner of automation applications, which brings great convenience to designers and users, but these applications are limited to data transmission. [0003] CAN bus, as one of the seven field bus standards passed by IEC, is the most widely used bus technology today. Due to its good operating characteristics, high reliability and unique design, CAN bus has simple structure, convenient connection, high data reliability, strong real-time communication, unlimited node settings, no special requirements for communication media, and easy access. Realizing the characteristics of multi-master structur...

Claims

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Application Information

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IPC IPC(8): H04M9/02
Inventor 丁恩杰张申赵正芳
Owner CHINA UNIV OF MINING & TECH
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