NDLI: Design of digital broadcast telephone system of coal mine

Content Provider	IEEE Xplore Digital Library
Author	Zhenghua Ma Liujun Yao Jiongru Zhou Dan Kong
Copyright Year	2011
Description	Author affiliation: Department of Information Science and Engineering, Changzhou University, Changzhou, China (Zhenghua Ma; Liujun Yao; Jiongru Zhou; Dan Kong)
Abstract	This paper analyzes the existing drawbacks of broadcast telephone system of coal mine, and introduces a design scheme of digital broadcast telephone system of coal mine based on TCP/IP protocol and Texas Instruments (TI) TMS320DM642 digital processor. The system makes use of audio codec chip TLV320AIC23B to achieve audio codec and adaptive anti-noise algorithm so that the output audio's quality could be good to meet requirements of the voice in the mine, and then takes advantage of seamlessly connectivity between EMAC and physical layer chip Intel LXT971 to complete digital audio signal transmission based on embedded-based TCP/IP protocol stack. In the System software portion, the system integrates audio collection task, audio processing task, network transmission and other tasks by RF5 in the DSP/BIOS. And this paper analyzes the development process of network transmission using the network development kit (NDK). In the telephone terminal audio signal can be output through speakers or headphones to achieve high-quality voice communications under mine.
Starting Page	1412
Ending Page	1415
File Size	256616
Page Count	4
File Format	PDF
ISBN	9781457703201
e-ISBN	9781457703218
DOI	10.1109/ICECC.2011.6066391
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-09-09
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	RF5 Codecs Protocols NDK Process control Digital signal processing TCP/IP Hardware Coal mining TMS320DM642 IP networks
Content Type	Text
Resource Type	Article

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