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ultrasonic transmission time
相关语句
  声传播时间
     Precise Measurement of Ultrasonic Transmission Time Using the Integral-oddment Separate Measuring Technology
     用整零分测技术精确检测声传播时间
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  “ultrasonic transmission time”译为未确定词的双语例句
     It describes in particular the MCU’s remote communication, analyses and offer the transforming circuit of RS232 voltage and TTL voltage, and transmits the ultrasonic transmission time and conditional temperature to the computer.
     对下位机的远程通信进行了详细的描述,分析并给出了RS232电平与TTL电平的转换电路,并结合本系统将超声波传播时间和环境温度传送到上位机中;
短句来源
  相似匹配句对
     TRANSMISSION MECHANISM OF ULTRASONIC MICROMOTORS
     超声微电机传动机理的研究
短句来源
     Study on the Ultrasonic Transmission and Ultrasonic Senors
     超声传输特性和超声传感系统研究
短句来源
     Ultrasonic Sensors
     超声波传感器
短句来源
     Ultrasonic Flowmeters
     超声流量计
短句来源
     TRANSMISSION PRICING
     输电电价的计算
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The characteristics of two traditional methods-direct time difference and phase difference-for ultrasonic transmission time measurement are analyzed,brings forward a new measuring technology,the integral-oddment separate measuring technology(IOSMT),which has the superiorities and gets over the disadvantages of the two traditional methods.By using this technology,broad measuring range and high precision are reached simultaneously.Finally the hardware and software design of the measurement system based on...

The characteristics of two traditional methods-direct time difference and phase difference-for ultrasonic transmission time measurement are analyzed,brings forward a new measuring technology,the integral-oddment separate measuring technology(IOSMT),which has the superiorities and gets over the disadvantages of the two traditional methods.By using this technology,broad measuring range and high precision are reached simultaneously.Finally the hardware and software design of the measurement system based on this technology are given.In practice,the designed system based on this IOSMT has the precision of 0.5 ns.By increasing the frequency of ultrasonic and bit number of the ADC,the precision on the stage of ps can also be reached.

分析了传统声传播时间检测方法──直接时间差法和相位差法的特点,在此基础上提出了既有二者优点、又克服了二者缺点的声传播时间整零分测技术,实现了对声传播时间宽范围、高精度的检测,同时对基于该技术的声传播时间检测系统的硬件软件进行了设计;实际证明,利用该技术所设计的系统对声传播时间的检测精度可达到0.5 ns,通过提高超声波频率和ADC位数,ps级的检测精度也可以达到。

 
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