| 具有语音提示功能的超声波倒车雷达系统的设计 |
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| 引用本文： | 张欣,冯雷,姜长坤.具有语音提示功能的超声波倒车雷达系统的设计[J].长春工程学院学报(自然科学版),2014(4):29-32. |
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| 作者姓名： | 张欣 冯雷 姜长坤 |
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| 作者单位： | 长春工程学院电气与信息工程学院,长春,130012 |
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| 基金项目： | 吉林省教育厅“十二五”科学技术研究项目(吉教科合子[2013]第304号)国家级大学生创新创业训练计划项目(1004421110)吉林省教育厅“十二五”科学技术研究项目 |
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| 摘 要： | 为了提高倒车的安全性,出于低成本、高精度、高稳定性的考虑,设计了一种具有语音提示功能的超声波倒车雷达系统。该系统以STC89C52单片机为核心搭建硬件平台,利用超声波测距原理检测车尾与后方障碍物的距离,使用语音芯片ISD1700实时语音提示,并配有温度测量电路对超声波传播速度进行实时补偿。实验测试结果与分析表明,所设计的超声波倒车雷达系统测距范围在0.2~3.4m之间能够保证工作稳定、高抗干扰性及较高的精度,测距的平均绝对误差为0.015m、平均相对误差为1%。
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| 关 键 词： | 超声波测距 倒车雷达 语音提示 温度补偿 |
The design of ultrasonic reversing radar system with voice function |
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| Affiliation: | ZHANG Xin,et al. (School of Electrical ＆ Information Technology, Changchun Institute of Technology, Changchun 130012, China |
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| Abstract: | In order to improve the safety of reversing, for reasons of low cost, high accuracy, high stability, the ultrasonic reversing radar system with voice function is designed in this paper. This system, with STC89C52 microcomputer as the core, uses the ultrasonic ranging principle to detect the distance between the back bumper and obstacles, in order to make voice chip ISD1700 real‐time prompt the distance, and uses temperature measurement circuit to compensate ultrasonic propagation velocity. Test results and analysis show that the ultrasonic reversing radar system can guarantee stability, high anti‐interference and high pre‐cision when the distance measuring range is between 0. 2 m to 3. 4 m. The mean absolute error of the ran‐ging is 0. 015 m, and the mean relative error is 1%. This system has certain practical application value. |
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| Keywords: | ultrasonic ranging reversing radar voice function temperature compensation |
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