Ultrasonic Detector for Wall Rock Crack and Its Application

超声波围岩裂隙 探测仪及其应用

Such aspects as the selection of the ultrasonic probe the measuring method for the incident point and the refraction angle and some key points for the probe during the operation of the ultrasonic detector are all described .

介绍了超声波斜探头的选择，入射点和折射角的测定方法及在 超声波 探伤过程中使用探头应注意的问题。

Acquisition and Processing of Information for Embedded Ultrasonic Detector

嵌入式 超声 探伤 仪的信息采集及处理

Site Corrosion Detection by Ultrasonic Detector

超声波管道腐蚀 检测器现场检测

The main achievements include : ( 1 ) Based on the technique of A-type ultrasonic pulse echo flaw testing instrument the DSP & CPLD-centered digital rail ultrasonic detector including its software part and hardware part is designed .

本文主要完成的工作：（1）以脉冲反射式超声波 探伤仪通用技术为基础，自行设计开发了以DSP&CPLD为核心的数字式钢轨 超声 探伤 仪，包括软件部分和硬件部分。

Grinding and Repairing of Transducer of Ultrasonic Detector

超声波 探伤 仪斜探头的磨制与修复

During the operation of the ultrasonic detector the oblique probe is subject to wear which consequently leads to the change of the incident point and the refraction angle and thus to produce some negative influence on the detection accuracy .

在 超声波 探伤过程中，斜探头会受到磨损，由此会使其入射点、折射角发生改变，影响 超声波探伤的准确性。

Application of High-speed DSP Technology in Rail Ultrasonic Detector

高速数字信号技术在钢轨 超声 探伤 仪中的应用

The Design of Transmit Circuit for Underwater Close Range Ultrasonic Detector

水中近距 超声波 探测器发射信号电路的设计

Design and Development of Control System of the Nonmetal Ultrasonic Detector Calibration Regulation

非金属 超声 检测 仪检定装置控制系统的设计与开发

Locating adjustment of digital ultrasonic detector and immersion testing

数字式 超声 探伤 仪的定位调节及液浸探伤 应用

We have been using the pulsed ultrasonic detector ( A-mode ) in the study of pathologically proved fatty liver cases .

我们对经肝活检病理证实为脂肪肝患者应用A型脉冲反射式 超声 诊断 仪进行探查。

This paper mainly studies the following aspects : 1 . The test methods of non-metallic ultrasonic detector are studied by the principles of non-metallic ultrasonic detector and the Ministry of Industry requirements of Industry test procedures .

本文主要研究了以下几个方面的内容：1、根据非金属超声检测仪原理及交通部行业检定规程的要求，对非金属 超声 检测 仪的检定方法进行研究。

An Experiment on Early Diagnosis of Pregnancy in Cows with Doppler Ultrasonic Detector

应用 超声多普勒 检测 仪对黄牛早期怀孕诊断试验

The signal control plan of imitation bats ultrasonic detector were put forward designed two control signals of power on-board and echo signal controlling in logical sequence .

提出了仿蝙蝠 超声 探测器的发射信号控制方案，设计on-board电源输出电压、回波信号为两个控制信号，执行逻辑顺序控制。

An appraisal of applying new types of ultrasonic detector to seismic model

新型 超声 探头地震模型应用评价

A manual ultrasonic detector is development to meet the demand of outfield using .

针对 超声外场检测中的要求，开发手持式 检测器。

Design of Data Recording System for Rail Ultrasonic Detector

钢轨 超声 探伤数据记录系统的设计

Real-time acquisition and processing of information are realized by utilizing embedded ultrasonic detector .

本文利用嵌入式系统实现 超声 探伤 仪来实现信息的实时采集与处理。

An ultrasonic detector for wall rock crack is introduced which is able to detect coal mine underground wall rock looseness range and cracks .

介绍了一种 超声波围岩裂隙 探测仪，可用于探测煤矿井下围岩松动范围及裂隙情况。

In order to meet the needs of high-speed track inspection cars the electro-hydraulic servo system is designed for the ultrasonic detector heads to resist sinusoidal movement and vertical vibration maintain invariable relative positions between detector heads and rails and provide reliable guarantee for real-time detection .

根据高速探伤需要，为 超声波 探头设计了抗蛇行运动和垂向振动的电液伺服系统来保证探头与钢轨相对位置保持不变，为实时探伤提供了可靠的保障。

Application of Digital Ultrasonic Detector in UT Detection

数字化 超声 探伤 仪在UT探伤中的应用

Design of Digital System in Ultrasonic Detector

超声 检测 仪数字化系统设计

However the existed ultrasonic detector judge the invasion by detecting the Doppler frequency of moving objects basically it is not suitable for the application field described in this paper .

现有的 超声波 探测器基本上是通过探测移动物体产生的多普勒频 移来判断是否有入侵，不适合本文的应用领域。

With the cooling system inside the wheel detector the ultrasonic detector can work stably at high speed .

探轮内依靠冷却系统保证 超声 探头高速走行时能正常工作。

Implementation of Narrowband Powering Pulse in Digital Ultrasonic Detector Based on CPLD

数字 超声 检测 仪中窄带激励脉冲的CPLD实现

Objective To evaluate the value the type-B ultrasonic detector model for health check-up .

目的探讨 B超影像学检查是否适合作为常规健康体检项目。

Echo judge the effectiveness of ultrasonic detector circuit need to achieve through the threshold of detection of ultrasound in a clear medium of communication time .

判断 超声波回波是否有效需要 检波电路来实现，通过阈值检波明确超声波在介质中传播的时间。