Design of ultrasonic distance-measuring system using temperature compensation methods
نویسندگان
چکیده
This document presents 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 digital signal processing technology. Experiment indicates that the measuring precision of ultrasonic distance measurement system is higher and its circuit is simpler.
منابع مشابه
Software Design of Ultrasonic Ranging System in Agricultural Robot
–The software system of ultrasonic ranging system in agricultural robot was designed. This ultrasonic ranging system has two most components including the transmitter and the receiver. The ultrasonic ranging method was concluded, and ultrasonic ranging system generally calculates distance using the time-of-flight method, and the sound velocity must adjust by temperature compensation method when...
متن کاملUltrasonic Flow Measurement with Integrated Temperature Measurement Compensation
Compensation for ultrasonic flow measurement has increasingly become the trend for applications that call for higher accuracy and tighter repeatability. Temperature is a variable that tends to have a significant impact on performance. Geometric dimension changes due to thermal expansion and contraction, as well as fluid dynamics, are impacted by temperature and thus have an influence on overall...
متن کاملLow-Cost Ultrasonic Distance Sensor Arrays with Networked Error Correction
Distance has been one of the basic factors in manufacturing and control fields, and ultrasonic distance sensors have been widely used as a low-cost measuring tool. However, the propagation of ultrasonic waves is greatly affected by environmental factors such as temperature, humidity and atmospheric pressure. In order to solve the problem of inaccurate measurement, which is significant within in...
متن کاملHigh Precision UTDR Measurements by Sonic Velocity Compensation with Reference Transducer
An ultrasonic sensor design with sonic velocity compensation is developed to improve the accuracy of distance measurement in membrane modules. High accuracy real-time distance measurements are needed in membrane fouling and compaction studies. The benefits of the sonic velocity compensation with a reference transducer are compared to the sonic velocity calculated with the measured temperature a...
متن کاملTemperature compensation of ultrasonic velocity during the malolactic fermentation process
Ultrasonic properties of materials present a strong dependence on temperature and in turn the ultrasonic velocity of propagation in the material under test. It is precisely for this reason that most ultrasonic measurements are often carried out with thermostated samples by using either water tanks or climate chambers. This approach is viable in a laboratory and when the measured or characterize...
متن کامل