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Design of Ultrasonic Distance-measuring System Using Temperature Compensation Methods

机译:基于温度补偿方法的超声波测距系统设计

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In this paper, the principle of ultrasonic distance measurement is described, the main error sources of ultrasonic distance measurement are analyzed also.A method of improving precision of ultrasonic distance measurement in air, in which the transmission speed of ultrasonic wave if corrected by measured air temperature and the forward edge of receive wave can be determined accurately by use of the receive wave feedback-time method with the software.Based on the idea,the circuit and software of ultrasonic distance measurement system have been designed to apply DSP technology.Experiment indicates that the measuring precision of ultrasonic distance measurement system is higher and its circuit is simpler.
机译:本文介绍了超声波测距的原理,并分析了超声波测距的主要误差来源。一种提高空气中超声波测距精度的方法,即通过测量的空气校正超声波的传输速度利用软件的接收波反馈时间方法可以准确地确定温度和接收波的前缘。在此基础上,设计了应用DSP技术的超声波测距系统的电路和软件。实验表明超声波测距系统的测量精度较高,电路简单。

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