基于蓝牙技术的车载免提系统的研究与设计
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摘要
据专家调查分析,驾车使用手机极易引发交通事故,如今业已构成危害公众交通安全的一项重要隐患。考虑到开车接打手机的潜在危险及其对公共交通的影响,我国《交通法》严令禁止驾车时接听手机,其他国家也不乏这样的立法例,如日本、德国的相关法律均禁止司机开车时使用手机。因此未来车载免提电话有希望成为汽车的标准配件。
蓝牙是一种支持设备短距离通信(一般是10M之内)的无线电技术,可以近距离内用最廉价的方式将几台数字化设备呈网状链接起来,而且现在蓝牙技术已非常成熟,它有着低功耗,低成本,使用安全,可靠性高,标准统一的特点,基于蓝牙技术的车载免提系统应运而生。蓝牙车载免提系统用于实践,可以大大提高驾车的安全性。
本文通过对蓝牙技术的研究,介绍整个蓝牙协议的体系结构,进一步研究蓝牙免提协议,给出了车载免提系统的设计与实现方案。在该系统的实现方案中比较困难的问题在于如何进行回音消除和噪音抑制,本文着重在这两个问题上进行了探讨与实践。
业界观察家称,在今后五年内,基于蓝牙的汽车技术呈爆炸性增长态势,车载免提电话因为其良好的实用性和性价比,将具有巨大的市场潜力。
According to researches, using a cellphone is dangerous for a driver when his is driving. It has become a major cause of traffic accidents and imperils the public traffic safety. With respect to the potential danger mentioned above, a regulation in Chinese Traffic Law forbids the using of cellphone in the course of driving. Such regulation is also very common in other countries, including Japan and Germany. Therefore, a hand-free phone in cars is very probable to become a standard part of cars in the near future.
Bluetooth is a wireless technique that supports short-range communication (generally within 10 meters). This means within the mentioned range, it can connect several digital devices into a net in the cheapest way. Furthermore, the Bluetooth technique is very mature now, character by its low-power consumption, low-cost, high-security, high-reliability and unified standards. Therefore, Bluetooth technique based hand-free system in cars is sure to emerge. The application of Bluetooth technique based hand-free system in cars will greatly improve the security in driving.
This paper introduces the systematic construction of Hand Free Profile (HFP) and furthers the research on it by studying the Bluetooth technique. It also offers the design of a hand-free system in cars and the way to implement it. Since the main difficulties in the practice is the echo cancellation and the noise reduction, this paper will expound the concerning problems in detail.
According to some observers, in the following 5 years, the Bluetooth technique based hand-free system in cars will have an dramatic growth. Because of its high practicality and price-performance ratio, the hand-free phone for car will promise great market potential.
蓝牙是一种支持设备短距离通信(一般是10M之内)的无线电技术,可以近距离内用最廉价的方式将几台数字化设备呈网状链接起来,而且现在蓝牙技术已非常成熟,它有着低功耗,低成本,使用安全,可靠性高,标准统一的特点,基于蓝牙技术的车载免提系统应运而生。蓝牙车载免提系统用于实践,可以大大提高驾车的安全性。
本文通过对蓝牙技术的研究,介绍整个蓝牙协议的体系结构,进一步研究蓝牙免提协议,给出了车载免提系统的设计与实现方案。在该系统的实现方案中比较困难的问题在于如何进行回音消除和噪音抑制,本文着重在这两个问题上进行了探讨与实践。
业界观察家称,在今后五年内,基于蓝牙的汽车技术呈爆炸性增长态势,车载免提电话因为其良好的实用性和性价比,将具有巨大的市场潜力。
According to researches, using a cellphone is dangerous for a driver when his is driving. It has become a major cause of traffic accidents and imperils the public traffic safety. With respect to the potential danger mentioned above, a regulation in Chinese Traffic Law forbids the using of cellphone in the course of driving. Such regulation is also very common in other countries, including Japan and Germany. Therefore, a hand-free phone in cars is very probable to become a standard part of cars in the near future.
Bluetooth is a wireless technique that supports short-range communication (generally within 10 meters). This means within the mentioned range, it can connect several digital devices into a net in the cheapest way. Furthermore, the Bluetooth technique is very mature now, character by its low-power consumption, low-cost, high-security, high-reliability and unified standards. Therefore, Bluetooth technique based hand-free system in cars is sure to emerge. The application of Bluetooth technique based hand-free system in cars will greatly improve the security in driving.
This paper introduces the systematic construction of Hand Free Profile (HFP) and furthers the research on it by studying the Bluetooth technique. It also offers the design of a hand-free system in cars and the way to implement it. Since the main difficulties in the practice is the echo cancellation and the noise reduction, this paper will expound the concerning problems in detail.
According to some observers, in the following 5 years, the Bluetooth technique based hand-free system in cars will have an dramatic growth. Because of its high practicality and price-performance ratio, the hand-free phone for car will promise great market potential.
引文
铩颷1]胡新华,杨继隆,姜伟,等.蓝牙技术综述[J].现代电子技术,2002,5:93-96
[2]张洪,窦文华.基于蓝牙和GSM技术的车载免提系统设计[J].2006,11:45-47
[3]栾颖,夏玮玮,叶芝慧,等.蓝牙技术在车载免提电话中的应用及实现[J].2006,32(6):20-23
[4]法规出版中心.中华人民共和国道路交通安全法[M].北京:法律出版社,2004.[5]新华网,美国每年开车打手机引发车祸死亡2600名[EB/OL].(2002-12-05)[2006-10-5].http://auto.tom.com/Archive/1440/1443/2002/12/5-65860.html
[6]魏彦军.蓝牙技术在车载免提系统中的应用[J].汽车电器.2006,7:1-4
[7]上海科技成果转化促进会.车载蓝牙免提系统[EB/OL].[2006-10-8].http://www.spcsc.sh.cn/renda/node276/node288/node289/node290/userobjectlai3602.html
[8]刘继州.蓝牙技术分析及应用前景预测[J].科技咨询导报.2007,3:20
[9]邹俊,马家志,胡明.蓝牙协议的体系结构及其应用[J].移动通信.2002,4:40-43
[10]金纯.蓝牙技术[M].北京:电子工业出版社,2001.
[11]黄智伟.蓝牙硬件电路[M].北京:北京航空航天大学出版社,2005.
[12]喻宗泉.蓝牙技术基础[M].北京:机械工业出版社,2006.
[13]Bluetooth Core Specification,Version2.0.Bluetooth SIG,November2004
[14]马建仓,罗亚军,赵玉亭.蓝牙核心技术及应用[M].北京:科学出版社,2003:1-14,322-341.
[15]Hands free profile v1.0[Z].Bluetooth SIG,2003.
[16]KAMMER D,MCNU TT G,SENESE B,等.蓝牙应用开发指南[M].李静,等译.北京:科学出版社,2003:161-193.
铩颷17]牛欣欣,张陆勇,周正.具有隐秘通话功能的蓝牙车载系统设计[J].无线电工程,2005,35(1):3-5.
[18]Cambridge Silicon Radio Limited.BlueCore2-external product datasheet[EB/OL].2001-10.http://www.chenxin.org/soft.htm.
[19]Cambridge Silicon Radio Limited.Bluelab27\docs[EB/OL].2003-03-51.http://www.csr.com.
[20]童力。蓝牙车载系统的组成结构和应用规范分析.[EB/OL].www.eetchina.com.2003
[21]和恩科技股份有限公司.车载免提蓝牙耳机项目可行性报告[Z].2004.
[22]蔡胜辉.蓝牙立体声耳机的设计理论与实践研究[D].天津:天津大学,2006.
[23]付贤辉.蓝牙耳机剖面协议的研究及其实现[D].天津:天津大学,2005.
[24]BlueCore2 -external production information data book[Z].CSR 2003.
[25]Specification of the Bluetooth system v1.1[Z].Bluetooth SIG,2001.
[26]Bluehab v3.3/v3.4 ParamMgr User Guide[Z].CSR.January 2006.
[27]Thomas WEI.基于CSR CVC-HF系统的汽车蓝牙免提解决方案[J].科技评论.67-69
[28]李建辉.嵌入式蓝牙语音通信设备的设计[D].天津:天津大学,2005.
[2]张洪,窦文华.基于蓝牙和GSM技术的车载免提系统设计[J].2006,11:45-47
[3]栾颖,夏玮玮,叶芝慧,等.蓝牙技术在车载免提电话中的应用及实现[J].2006,32(6):20-23
[4]法规出版中心.中华人民共和国道路交通安全法[M].北京:法律出版社,2004.[5]新华网,美国每年开车打手机引发车祸死亡2600名[EB/OL].(2002-12-05)[2006-10-5].http://auto.tom.com/Archive/1440/1443/2002/12/5-65860.html
[6]魏彦军.蓝牙技术在车载免提系统中的应用[J].汽车电器.2006,7:1-4
[7]上海科技成果转化促进会.车载蓝牙免提系统[EB/OL].[2006-10-8].http://www.spcsc.sh.cn/renda/node276/node288/node289/node290/userobjectlai3602.html
[8]刘继州.蓝牙技术分析及应用前景预测[J].科技咨询导报.2007,3:20
[9]邹俊,马家志,胡明.蓝牙协议的体系结构及其应用[J].移动通信.2002,4:40-43
[10]金纯.蓝牙技术[M].北京:电子工业出版社,2001.
[11]黄智伟.蓝牙硬件电路[M].北京:北京航空航天大学出版社,2005.
[12]喻宗泉.蓝牙技术基础[M].北京:机械工业出版社,2006.
[13]Bluetooth Core Specification,Version2.0.Bluetooth SIG,November2004
[14]马建仓,罗亚军,赵玉亭.蓝牙核心技术及应用[M].北京:科学出版社,2003:1-14,322-341.
[15]Hands free profile v1.0[Z].Bluetooth SIG,2003.
[16]KAMMER D,MCNU TT G,SENESE B,等.蓝牙应用开发指南[M].李静,等译.北京:科学出版社,2003:161-193.
铩颷17]牛欣欣,张陆勇,周正.具有隐秘通话功能的蓝牙车载系统设计[J].无线电工程,2005,35(1):3-5.
[18]Cambridge Silicon Radio Limited.BlueCore2-external product datasheet[EB/OL].2001-10.http://www.chenxin.org/soft.htm.
[19]Cambridge Silicon Radio Limited.Bluelab27\docs[EB/OL].2003-03-51.http://www.csr.com.
[20]童力。蓝牙车载系统的组成结构和应用规范分析.[EB/OL].www.eetchina.com.2003
[21]和恩科技股份有限公司.车载免提蓝牙耳机项目可行性报告[Z].2004.
[22]蔡胜辉.蓝牙立体声耳机的设计理论与实践研究[D].天津:天津大学,2006.
[23]付贤辉.蓝牙耳机剖面协议的研究及其实现[D].天津:天津大学,2005.
[24]BlueCore2 -external production information data book[Z].CSR 2003.
[25]Specification of the Bluetooth system v1.1[Z].Bluetooth SIG,2001.
[26]Bluehab v3.3/v3.4 ParamMgr User Guide[Z].CSR.January 2006.
[27]Thomas WEI.基于CSR CVC-HF系统的汽车蓝牙免提解决方案[J].科技评论.67-69
[28]李建辉.嵌入式蓝牙语音通信设备的设计[D].天津:天津大学,2005.