1)ultrasonic ranging超声波测距
1.The author introduces software and hardware composition of an ultrasonic ranging system based on single-chip control as well as its working principle and error analysis .介绍一种基于单片机控制的超声波测距系统的软硬件构成、工作原理和误差分析。
2.The ultrasonic ranging is used to design the plane location system with a high accuracy.将超声波测距技术应用于物体的平面定位中,设计具有精确度较高的平面定位系统。
3.This paper design a new ultrasonic ranging system,which uses P89V51RB2 for the control core of the microcontroller, uses envelope detector circuit structure echo envelope,and through differential zero detection circuit set echo envelope peak time,thereby establishing the dissemination time in the ultrasonic measuring distance.设计了一种新型的超声波测距系统,该系统以单片机P89V51RB2为控制核心,利用包络检波电路构造回波包络,并通过微分过零点检测电路确定回波包络峰值点时间,进而确立超声波在被测距离上的传播时间。
英文短句/例句
1.Design of Close Quarters and High Accuracy Ultrasonic Distance Measure System近距离高精度超声波测距系统的设计
2.Design of Ultrasonic Range Finder Based on AT89C52;基于AT89C52单片机的超声波测距器设计
3.Ultrasontic Range Finding System Based on Microcontroller;超声波测距的电路设计与单片机编程
4.Design of Ultrasonic Range Finder Based on C8051F320基于C8051F320单片机的超声波测距仪
5.Intelligent ultrasonic distance measurement system of CAN bus based on P87C591基于P87C591的CAN总线智能超声波测距系统
6.Ultrasonic Detection Module for Robot Based on ARM基于ARM的机器人超声波测距模块
7.Design of Ultrasonic Tester Based on the AT89S52基于AT89S52超声波测距仪设计
8.Ultrasonic range finder which based on two CPUs基于双CPU处理的超声波测距仪设计
9.Research of Ultrasonic Ranging System with High Anti-interfere Performance Based on DSP基于DSP的高抗干扰性超声波测距系统
10.Study on the Ultrasonic Ranging System in the Blind-guiding Robot导盲机器人中超声波测距系统的研究
11.Design of Distance Measurement System Based on Ultrasonic Sensor基于超声波测距系统的节能装置设计
12.High Precision on Line Ultrasonic Distance Measurement Based on Wavelet Transform基于小波变换高精度在线超声波测距技术研究
13.Applied Research on Ultrasonic Distance Measurement in Height-Measurement of Locomotive Coupler;超声波测距在机车车钩高度检测中的应用研究
14.A Method of Improving Ranging Precision of Mobile Ultrasonic Distance Measurement System一种提高移动式超声波测距系统测距精度的方法
15.The Design of Ultrasonic Rangefinder Controlled by CAN-bus on the Intelligent Vehicle;智能车上CAN总线控制超声波测距仪设计
16.Supersonic Distance Measurement Based on Correlation Approaches of Pseudo Random Binary Sequences;伪随机序列相关的超声波测距系统研究
17.The Vehicle Safety System Based on Ultrasonic Distance Measurement Device;超声波测距仪在汽车安全系统中的应用
18.Use of Time Amplifying Technique for Enhancing Precision of Ultrasonic Ranging;利用时间放大技术提高超声波测距精度
相关短句/例句
ultrasonic distance measurement超声波测距
1.Design of ultrasonic distance measurement system with high precision based on μC/OS-Ⅱ基于μC/OS-Ⅱ的高精度超声波测距系统设计
2.Intelligent ultrasonic distance measurement system of CAN bus based on P87C591基于P87C591的CAN总线智能超声波测距系统
3.An approach of hardware and software for intelligent ultrasonic distance measurement system based on CAN bus with PIC16F877A,stand-alone CAN bus controller MCP2501 and PCA82C250 was introduced.介绍一种以Microchip PIC16F877A微控制器、MCP2510独立CAN总线控制器和PCA82C250收发器为核心组成的CAN总线智能超声波测距系统及其硬件和软件的设计方法。
3)ultrasonic distance measure超声波测距
1.Design of new retinoscope with the ultrasonic distance measure instrument;带超声波测距装置的新型检影镜的研制
2.A liquid-level auto-control system based on ultrasonic distance measure;基于超声波测距的液位自动控制系统
3.This paper analyzed the disadvantage of traditional ultrasonic distance measure system,and for the actual application,designed a subaqueous ultrasonic distance measure system,which used PCI-1714 as the hardware platform,and confirmed the echo time by high speed data acquisition and correlation time-delay estimate.分析了传统超声波测距系统的缺点,结合实际运用,设计了一种基于PCI-1714硬件平台,通过高速采样,运用互相关时延估计的算法来确定回波到达时刻的水下超声波测距系统。
4)Ultrasonic measurement超声波测距
5)ultrasonic telemeter超声波测距
1.The application of a multi-channel ultrasonic telemeter to detecting the deformation of an industrial rotary kiln;多通道超声波测距在工业回转窑变形检测中的应用
2.This paper describes the principle of ultrasonic telemeter and the implement of a multi-wave ultrasonic telemeter.并说明了超声波测距系统的原理,实现了一种多频超声波测距系统。
6)ultrasonic wave echo measuring distance超声波回波测距
延伸阅读
电磁波测距电磁波测距electromagneticdistancemeasurement利用电磁波作为载波，经调制后由测线一端发射出去，由另一端反射或转送回来，测定发射波与回波相隔的时间，以测量距离的方法。大地测量、工程测量中测量距离的主要方法，测量距离简便、迅速。电磁波测距有两种方法：脉冲测距法和相位测距法。电磁波测距仪①脉冲测距法。由测线一端的仪器发射光脉冲，一小部分直接由仪器内部进入接收光电器件，作为参考脉冲，其余部分发射出去，经过测线另一端的反射镜反射回来，也进入接收光电器件，测量参考脉冲同反射脉冲相隔的时间t，可求出距离D：D=ct式中c为光速。这种方法一次测量可单值地求得待测距离。测程为几千米、十几千米，远的可达几十万千米。精度一般为米级或分米级。主要用于短距离低精度或长距离的测量。②相位测距法。用高频电流调制后电磁波从测线一端发射出去，由另一端返回后，用相位显示器测得发射波与回波之间的相位差Φ＝2πN＋j，可间接测得电磁波往返经历的时间t，将t代入到脉冲法测距公式，得D为：式中f为调制频率，λ为已知的调制波波长。相当于测量距离的尺子的长度，N相当于测程上的整尺数，是不足一个测尺长的尾数。为了确定整尺数N，通常采用可变频率法和多级固定频率法。相位测距法测距精度比较高。优于毫米级，测距在几十千米以内。地面上的精密测距，一般采用相位测距法。
