| 1. | Ultrasonic measurement system based on microprocessor
基于单片机的超声波测距系统 |
| 2. | Ultrasonic measurement of seafloor sediment cores
海底柱状沉积物超声测量 |
| 3. | Application of virtual instrument technology in ultrasonic measurement
虚拟仪器技术及其在超声测量中的应用 |
| 4. | Research on ultrasonic measurement of pipeline thickness based on power spectral estimation
基于功率谱估计的管道超声测厚研究 |
| 5. | Birth weight prediction for ultrasonic measurement of fetal thigh soft tissue thickness
超声测量胎儿股骨皮下组织厚度预测胎儿体重的临床应用 |
| 6. | Birth weight prediction by ultrasonic measurement of fetal thigh soft tissue thickness
超声测量胎儿股骨皮下组织厚度与预测出生体重的相关性探讨 |
| 7. | This oil measurement ultrasonic instrument takes the smallest system of the chip computer at89c52 as the core and takes the theory of ultrasonic measurement as the basis . it uses ultrasonic to measure the oil automatically and also deals with data in order to decrease artificial interfere and provides a person - computer screen with a show and a keyboard , which is convenient for the operators carrying out the measurement control . the operators can print and keep some data using micro - printers or communicating with pc in order to manage the store of oil amount very well
超声波油量测量仪以单片机at89c52最小系统为核心，以超声波测距原理为理论依据，利用超声波作为控制信号对油量进行自动检测和数据处理，减少了测量过程中的人工干预，提供了一个带有显示、键盘的人机对话界面，方便了操作人员对油量的实时监控，通过微型打印机或与pc机进行通信等方式打印、保存有关数据，能够更好地对油量的存储情况进行管理。 |
| 8. | Therefore , it is necessary for guaranteeing the quality of steel plate to detect and repair the roll profile timely and exactly . this paper presents the sonic circulation and multi - pulse echo principle and designs roll profile ultrasonic measurement system based on the analysis of 3d surface measurement technology and roll profile measurement methods
本文在分析了三维面型检测的发展现状及目前辊型的检测方法的基础上，提出了声循环多次脉冲反射测量原理，并以此为基础设计了上位机化的超声波辊型测量系统。 |
| 9. | A new fluid level measurement method , based on ultrasonic measurement , for calculating the velocity of sound and the fluid level is presented . this method points out that a low - power acoustic signal generator under control can be used to emit spread spectrum signals and the fluid level can be worked out by detecting the correlation - peak output of the matching filter whose input is the echo signal received by a microphone
本文提出了一种新的基于扩频通信原理的液位测量方法，使用可控声源，发射较低功率的频谱扩展信号，在接收端对回波信号进行匹配滤波处理，通过检测相关峰来确定特征回波的位置，从而计算出液位。 |
| 10. | The method , utilizing computer technique , removes the influence of artificial reading & calculating , makes the measurement accurate , easy , direct and safe . this thesis firstly introduces the method of ultrasonic measurement and analyzes the properties of the acoustic channel
此外，本方法在传统测量方法的基础上，结合了计算机技术，整个过程可靠迅速，克服了常规方法由于人工判读所带来的误差和操作不便等缺点，可极大地提高液位测量的自动化程度和结果的测量精度。 |
