现代电子技术
現代電子技術
현대전자기술
Modern Electronics Technique
2015年
22期
94-98
,共5页
物联网%汽车测距%防撞系统%系统设计
物聯網%汽車測距%防撞繫統%繫統設計
물련망%기차측거%방당계통%계통설계
Internet of Things%automobile range-finding%collision avoidance system%system design
基于物联网进行汽车智能测距,可以实现汽车车距的准确控制,对汽车安全设计和智能防撞控制具有重要意义.传统的汽车测距系统设计方法采用多处理器接口测距方法,随着物联网中汽车节点数据增加而测距效果不好.提出基于传感节点数据融合和分布式程序控制的汽车智能测距系统设计方法.首先构建汽车智能测距系统设计的总体模型,给出基于宽带自模糊度特征提取的车辆测距算法.基于物联网的汽车智能测距系统包括了超声波雷达信号的声学基阵、测距雷达信号收发转换和功率放大器以及模拟信号预处理机这三大部分.系统具有测距数据的测量、智能测距的回波模拟、多车道数据记录分析、上位机通信、多通道可编程信号处理等功能.采用TI5000 系列DSP进行测距核心编程,实现系统硬件模块设计和软件编程设计.实验结果表明,采用该系统,具有较好的测距精度,稳定性和可靠性较好.
基于物聯網進行汽車智能測距,可以實現汽車車距的準確控製,對汽車安全設計和智能防撞控製具有重要意義.傳統的汽車測距繫統設計方法採用多處理器接口測距方法,隨著物聯網中汽車節點數據增加而測距效果不好.提齣基于傳感節點數據融閤和分佈式程序控製的汽車智能測距繫統設計方法.首先構建汽車智能測距繫統設計的總體模型,給齣基于寬帶自模糊度特徵提取的車輛測距算法.基于物聯網的汽車智能測距繫統包括瞭超聲波雷達信號的聲學基陣、測距雷達信號收髮轉換和功率放大器以及模擬信號預處理機這三大部分.繫統具有測距數據的測量、智能測距的迴波模擬、多車道數據記錄分析、上位機通信、多通道可編程信號處理等功能.採用TI5000 繫列DSP進行測距覈心編程,實現繫統硬件模塊設計和軟件編程設計.實驗結果錶明,採用該繫統,具有較好的測距精度,穩定性和可靠性較好.
기우물련망진행기차지능측거,가이실현기차차거적준학공제,대기차안전설계화지능방당공제구유중요의의.전통적기차측거계통설계방법채용다처리기접구측거방법,수착물련망중기차절점수거증가이측거효과불호.제출기우전감절점수거융합화분포식정서공제적기차지능측거계통설계방법.수선구건기차지능측거계통설계적총체모형,급출기우관대자모호도특정제취적차량측거산법.기우물련망적기차지능측거계통포괄료초성파뢰체신호적성학기진、측거뢰체신호수발전환화공솔방대기이급모의신호예처리궤저삼대부분.계통구유측거수거적측량、지능측거적회파모의、다차도수거기록분석、상위궤통신、다통도가편정신호처리등공능.채용TI5000 계렬DSP진행측거핵심편정,실현계통경건모괴설계화연건편정설계.실험결과표명,채용해계통,구유교호적측거정도,은정성화가고성교호.
The automobile intelligent range-finding based on the Internet of Things can realize the accuracy control of the distance between automobiles. It is significant for the safety design and the intelligent collision avoidance control of automobiles. The traditional design method of the automobile range-finding system adopts the range-finding method of multi-processor inter-face,and the range-finding effect is getting bad with the increasing of the automobile's node data in the Internet of Things. The design method of the automobile intelligent range-finding system based on sensor node data fusion and distributed program con-trol is proposed. The overall design model of the automobile range-finding system is constructed,and the automobile range-finding algorithm based on the feature extraction of the broadband self-ambiguity is provided. The automobile intelligent range-finding system based on the Internet of Things is composed of three parts(acoustic array of ultrasonic radar signal,transmitting-receiv-ing conversion of the range-finding radar signal and power amplifier,and analog signal preprocessor). The system has the func-tions of the measurement of the range-finding data,echo simulation of intelligent range-finding,recording and analysis of multi-lane data,communication of host computer,and processing of the multi-channel programmable signal. The range-finding core programming is carried on by adopting TI 5000 Series DSP to realize the design of hardware module and software programming in the system. The experimental results show that the system has high range-finding accuracy,great stability and high reliability.
