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B超设备的结构、原理以及常用的维修方法

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发表于 2020-10-19 23:18:22 | 显示全部楼层 |阅读模式

                    

                    

                    
                    
                    <p><img data-type="gif" src="http://mmbiz.qpic.cn/mmbiz_gif/dx3KibwtDhvc6YBndBzrYvfAVPCGNAlsqB9f7SjRnXkibcO3P2CSjz7TnOO8RAArOGOjobic1D5DCTCzzAoxv9jfw/0?wx_fmt=gif" data-ratio="0.1703125" data-w="640"  /></p><p style="list-style-type: none; font-size: 12px; font-family: 宋体, Arial, Helvetica, sans-serif; color: rgb(102, 102, 102); line-height: 24px; white-space: normal; background-color: rgb(226, 237, 255);"><strong style="list-style-type: none; font-size: 12px;"><span style="color: rgb(102, 102, 102); font-family: 宋体, Arial, Helvetica, sans-serif; font-size: 12px; line-height: 24px;  background-color: rgb(226, 237, 255);">  时代在不断地发展,医疗技术也在不断地进步,B超机的出现,可以方便的检查身体健康问题,对于是否怀孕也可以做出明确地判断,下面为大家简单地介绍</span>B超设备<span style="color: rgb(102, 102, 102); font-family: 宋体, Arial, Helvetica, sans-serif; font-size: 12px; line-height: 24px;  background-color: rgb(226, 237, 255);">的结构、原理以及常用的维修方法。</span></strong></p><p style="list-style-type: none; font-size: 12px; font-family: 宋体, Arial, Helvetica, sans-serif; color: rgb(102, 102, 102); line-height: 24px; white-space: normal; background-color: rgb(226, 237, 255);"><strong style="list-style-type: none; font-size: 12px;">&nbsp; &nbsp;B超设备的结构以及基本原理</strong></p><p style="list-style-type: none; font-size: 12px; font-family: 宋体, Arial, Helvetica, sans-serif; color: rgb(102, 102, 102); line-height: 24px; white-space: normal; background-color: rgb(226, 237, 255);">  </p><p style="list-style-type: none; font-size: 12px; font-family: 宋体, Arial, Helvetica, sans-serif; color: rgb(102, 102, 102); line-height: 24px; white-space: normal; background-color: rgb(226, 237, 255);">&nbsp; &nbsp;<strong> 1、B超</strong><strong>设备的基本结构</strong></p><p style="list-style-type: none; font-size: 12px; font-family: 宋体, Arial, Helvetica, sans-serif; color: rgb(102, 102, 102); line-height: 24px; white-space: normal; background-color: rgb(226, 237, 255);">  B超设备的基本结构可以分为两大部分,即主机以及探头,其组成部分包括发射、扫查、接收、信号处理和显示这五个部分。一个主机上可以具有一个、两个甚至是多个探头,一个探头内又可以安装1个或者数十个甚至是上千个压电晶片,晶片的作用主要是将电与声或者声与电进行能量的转换。在工作的时候,B超设备的前端电路中先发射出超声脉冲,经过探头的接口电路之后再加载到探头之上,这时候探头将接收到的回波信号再通过探头的接口电路回到接受放大电路。</p><p style="list-style-type: none; font-size: 12px; font-family: 宋体, Arial, Helvetica, sans-serif; color: rgb(102, 102, 102); line-height: 24px; white-space: normal; background-color: rgb(226, 237, 255);">  </p><p style="list-style-type: none; font-size: 12px; font-family: 宋体, Arial, Helvetica, sans-serif; color: rgb(102, 102, 102); line-height: 24px; white-space: normal; background-color: rgb(226, 237, 255);"><strong>&nbsp; &nbsp;2、B超设备的基本原理</strong></p><p style="list-style-type: none; font-size: 12px; font-family: 宋体, Arial, Helvetica, sans-serif; color: rgb(102, 102, 102); line-height: 24px; white-space: normal; background-color: rgb(226, 237, 255);">  B超设备是利用超声波的物理特性经过医学上的分析而判断患者的病理的一种医疗仪器。由于超声波在人体内传播的过程中会发生反射、折射、散射等一系列的物理特性,因此,医院工作者就根据超声波发生的这些变化,再结合临床医学以及病理学进行相关的分析与检测,对病变的部位、病变的程度等作出相对准确地判断。</p><p style="list-style-type: none; font-size: 12px; font-family: 宋体, Arial, Helvetica, sans-serif; color: rgb(102, 102, 102); line-height: 24px; white-space: normal; background-color: rgb(226, 237, 255);"><br  /></p><p style="list-style-type: none; font-size: 12px; font-family: 宋体, Arial, Helvetica, sans-serif; color: rgb(102, 102, 102); line-height: 24px; white-space: normal; background-color: rgb(226, 237, 255);">  <strong style="list-style-type: none; font-size: 12px;">二、B超设备常用的维修方法</strong></p><p style="list-style-type: none; font-size: 12px; font-family: 宋体, Arial, Helvetica, sans-serif; color: rgb(102, 102, 102); line-height: 24px; white-space: normal; background-color: rgb(226, 237, 255);">  1、主观检查B超设备维修法</p><p style="list-style-type: none; font-size: 12px; font-family: 宋体, Arial, Helvetica, sans-serif; color: rgb(102, 102, 102); line-height: 24px; white-space: normal; background-color: rgb(226, 237, 255);">  主观检查B超设备维修法是根据维修人员的主观来检查设备是否发生故障,通过视觉、感觉、嗅觉以及听觉对设备进行检查,当然,这种主观检查的方法只能简单地检查出比较明显的设备故障。</p><p style="list-style-type: none; font-size: 12px; font-family: 宋体, Arial, Helvetica, sans-serif; color: rgb(102, 102, 102); line-height: 24px; white-space: normal; background-color: rgb(226, 237, 255);">  电源由变压、整流、滤波、稳压等部分组成。它给整机提供了随电网电压变化的稳定电压,多数电源部分的工作电流较大,由于大电流导致一些元件在正常工作时就要发热,如整流桥、稳压块等,当负载过重(即电流过大),电网电压过高和温度过高(如散热不良)时,都可能造成这些元件的损坏。所以要加装交流稳压器来稳定电源电压;安装空调机来降低室内温度和定期清除机器内部的灰尘等等。采取这些措施是完全可以减少电源部分损坏的可能的,同时亦可大大减少机器的故障率,即使对于一些电源部分损坏的机器我们用国产元件代替也收到了比较理想的效果。</p><p style="list-style-type: none; font-size: 12px; font-family: 宋体, Arial, Helvetica, sans-serif; color: rgb(102, 102, 102); line-height: 24px; white-space: normal; background-color: rgb(226, 237, 255);">  2、信号追踪维修法</p><p style="list-style-type: none; font-size: 12px; font-family: 宋体, Arial, Helvetica, sans-serif; color: rgb(102, 102, 102); line-height: 24px; white-space: normal; background-color: rgb(226, 237, 255);">  信号追踪维修法是要借助示波器来检查设备的放大电路,然后检查信号的波形以及幅度是否正常,在检查设备的逻辑电路时,要检测逻辑关系以及设备的输入输出电平是否正确。这种信号追踪维修法避免了由于无法通过主观判断进行故障检查,同时也是比较准确地一种B超设备检查的一种方法。</p><p style="list-style-type: none; font-size: 12px; font-family: 宋体, Arial, Helvetica, sans-serif; color: rgb(102, 102, 102); line-height: 24px; white-space: normal; background-color: rgb(226, 237, 255);">  3、原理分析测量法</p><p style="list-style-type: none; font-size: 12px; font-family: 宋体, Arial, Helvetica, sans-serif; color: rgb(102, 102, 102); line-height: 24px; white-space: normal; background-color: rgb(226, 237, 255);">  原理分析测量法的前提是设备检修人员要对设备极其的了解,通过对设备工作原理的分析,根据设备的基本结构以及结构之间的相互联系来找出发生故障的部位,然后借助示波器或者万能表等测量仪器来测量电压、电流、电阻、波形以及频率等是否正常,进而找出故障发生的原因。这种方法的优势是能够判断设备元件的优劣。</p><p style="list-style-type: none; font-size: 12px; font-family: 宋体, Arial, Helvetica, sans-serif; color: rgb(102, 102, 102); line-height: 24px; white-space: normal; background-color: rgb(226, 237, 255);">  在B超设备检修的过程中,要了解每一种设备的工作原理以及设备的基本结构,在检修的时候,必要情况下可以借助示波器、万能表等仪器进行测量。B超设备的存放要保证设备的环境干净清洁,并且设备检修员要定期的对设备进行除尘以及内部零件润滑等保护措施,这样才能够保证设备的正常运行,使设备能够更好地对患者进行病患的检验。</p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-size: 16px; white-space: normal; line-height: 25.6px; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; font-size: 14px; text-indent: 0em; font-family: Arial, Verdana, sans-serif; line-height: 1.75em; box-sizing: border-box !important; word-wrap: break-word !important;"><br  /></span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-size: 16px; white-space: normal; line-height: 25.6px; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; 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min-height: 1em; color: rgb(62, 62, 62); font-size: 16px; white-space: normal; line-height: 24.381px; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; line-height: 1.75em; text-indent: 0em; font-size: 14px; font-family: Arial, Verdana, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">微信公众帐号:</span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-size: 17.1429px; line-height: 36.5714px; white-space: normal; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><img class="" data-ratio="1" data-s="300,640" src="http://mmbiz.qpic.cn/mmbiz_jpg/dx3KibwtDhvfh2wVX4NftfnfjcZWIKK6EQDWtTTsYwjfQBnsqkThAZP5OlDmg5S3g22gSqMWhAxr2O4MydSJHnQ/640?wx_fmt=jpeg" data-type="jpeg" data-w="258" style="box-sizing: border-box !important; word-wrap: break-word !important; width: auto !important; visibility: visible !important;"  /></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-size: 12px; text-indent: 0em; white-space: normal; font-family: Arial, Verdana, sans-serif; line-height: 1.75em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;">维修咨询:QQ: &nbsp;712638 404</span><br style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-size: 12px; text-indent: 0em; white-space: normal; font-family: Arial, Verdana, sans-serif; line-height: 1.75em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;">设备咨询: &nbsp; QQ: &nbsp;712638 405</span></p><p style="max-width: 100%; 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