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<p style="-webkit-tap-highlight-color: transparent;box-sizing: border-box;margin-top: 16px;margin-bottom: 16px;color: rgb(34, 34, 34);font-family: " ingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif;font-size: 16px;font-variant-numeric: normal;font-variant-east-asian: normal;line-height: 28px;white-space: normal;widows: 1;background-color: rgb(255, 255, 255);"><span style="-webkit-tap-highlight-color: transparent;box-sizing: border-box;font-weight: 700;">1故障现象</span></p><p style="-webkit-tap-highlight-color: transparent;box-sizing: border-box;margin-top: 16px;margin-bottom: 16px;color: rgb(34, 34, 34);font-family: "ingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif;font-size: 16px;font-variant-numeric: normal;font-variant-east-asian: normal;line-height: 28px;white-space: normal;widows: 1;background-color: rgb(255, 255, 255);">CT机开机正常，扫描框架在0度或负角度均可以正常扫描，角度为20度左右时，扫描中断，需重新制定扫描计划多次，或减少框架倾斜正角度。但机器未报任何错误信息。之后上述故障越来越频繁出现，以致影响扫描工作。</p><p style="-webkit-tap-highlight-color: transparent;box-sizing: border-box;margin-top: 16px;margin-bottom: 16px;color: rgb(34, 34, 34);font-family: "ingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif;font-size: 16px;font-variant-numeric: normal;font-variant-east-asian: normal;line-height: 28px;white-space: normal;widows: 1;background-color: rgb(255, 255, 255);"><span style="-webkit-tap-highlight-color: transparent;box-sizing: border-box;font-weight: 700;">2故障分析</span></p><p style="-webkit-tap-highlight-color: transparent;box-sizing: border-box;margin-top: 16px;margin-bottom: 16px;color: rgb(34, 34, 34);font-family: "ingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif;font-size: 16px;font-variant-numeric: normal;font-variant-east-asian: normal;line-height: 28px;white-space: normal;widows: 1;background-color: rgb(255, 255, 255);">（1）扫描中断一般是CT机电源、滑环、X线部分出现故障。</p><p style="-webkit-tap-highlight-color: transparent;box-sizing: border-box;margin-top: 16px;margin-bottom: 16px;color: rgb(34, 34, 34);font-family: "ingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif;font-size: 16px;font-variant-numeric: normal;font-variant-east-asian: normal;line-height: 28px;white-space: normal;widows: 1;background-color: rgb(255, 255, 255);">（2）扫描架旋转部分，包括电源、旋转控制部分、皮带轮、变频电机、部件松动摩擦等。</p><p style="-webkit-tap-highlight-color: transparent;box-sizing: border-box;margin-top: 16px;margin-bottom: 16px;color: rgb(34, 34, 34);font-family: "ingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif;font-size: 16px;font-variant-numeric: normal;font-variant-east-asian: normal;line-height: 28px;white-space: normal;widows: 1;background-color: rgb(255, 255, 255);">（3）信号传输中断、计算机故障等。以上任何部分出现故障，均可引起扫描中断。</p><p style="-webkit-tap-highlight-color: transparent;box-sizing: border-box;margin-top: 16px;margin-bottom: 16px;color: rgb(34, 34, 34);font-family: "ingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif;font-size: 16px;font-variant-numeric: normal;font-variant-east-asian: normal;line-height: 28px;white-space: normal;widows: 1;background-color: rgb(255, 255, 255);"><span style="-webkit-tap-highlight-color: transparent;box-sizing: border-box;font-weight: 700;">3故障排除</span></p><p style="-webkit-tap-highlight-color: transparent;box-sizing: border-box;margin-top: 16px;margin-bottom: 16px;color: rgb(34, 34, 34);font-family: "ingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif;font-size: 16px;font-variant-numeric: normal;font-variant-east-asian: normal;line-height: 28px;white-space: normal;widows: 1;background-color: rgb(255, 255, 255);">首先排除电源，滑环，X线发生部分和计算机部分。因在0度或者负角度时可以正常扫描，重点检查扫描架旋转部分，有无部件松动摩擦或者信号转输中断。</p><p style="-webkit-tap-highlight-color: transparent;box-sizing: border-box;margin-top: 16px;margin-bottom: 16px;color: rgb(34, 34, 34);font-family: "ingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif;font-size: 16px;font-variant-numeric: normal;font-variant-east-asian: normal;line-height: 28px;white-space: normal;widows: 1;background-color: rgb(255, 255, 255);">关机，打开扫描架后盖，检查滑环、碳刷，检查球管、高压发生器固定良好，未见有松动迹象。用手顺时针旋转框架，未发现异常。</p><p style="-webkit-tap-highlight-color: transparent;box-sizing: border-box;margin-top: 16px;margin-bottom: 16px;color: rgb(34, 34, 34);font-family: "ingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif;font-size: 16px;font-variant-numeric: normal;font-variant-east-asian: normal;line-height: 28px;white-space: normal;widows: 1;background-color: rgb(255, 255, 255);">检查风冷、油冷、低压电源板、准直器、控制器、通道板，均固定良好，未见有松动。维修进入困境。重点检查信号传输部分。</p><p style="-webkit-tap-highlight-color: transparent;box-sizing: border-box;margin-top: 16px;margin-bottom: 16px;color: rgb(34, 34, 34);font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif;font-size: 16px;font-variant-numeric: normal;font-variant-east-asian: normal;line-height: 28px;white-space: normal;widows: 1;background-color: rgb(255, 255, 255);">本机采用先进的雷达射频传输技术来传递数据。</p><p style="-webkit-tap-highlight-color: transparent;box-sizing: border-box;margin-top: 16px;margin-bottom: 16px;color: rgb(34, 34, 34);font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif;font-size: 16px;font-variant-numeric: normal;font-variant-east-asian: normal;line-height: 28px;white-space: normal;widows: 1;background-color: rgb(255, 255, 255);">由探测器、通道板、D522板把光信号转变电信号，再由电信号转变成数字信号，经光导纤维电缆传递到发射板，在发射板中进行数字——模拟信号转换，把原数字信号转变成高频电信号，经发射装置无线向外发射。接收板接收到电信号，在接收板内由高频电信号转变成数字信号。</p><p style="-webkit-tap-highlight-color: transparent;box-sizing: border-box;margin-top: 16px;margin-bottom: 16px;color: rgb(34, 34, 34);font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif;font-size: 16px;font-variant-numeric: normal;font-variant-east-asian: normal;line-height: 28px;white-space: normal;widows: 1;background-color: rgb(255, 255, 255);">经光电纤维电缆送到计算机进行图像处理后，再送到显示器，就是我们看到的人体断面图像。无线发射装置天线在扫描架旋转部分的外周，接收部分安装在扫描架后左下角，和低压滑环碳刷安装在一个支架上。</p><p style="-webkit-tap-highlight-color: transparent;box-sizing: border-box;margin-top: 16px;margin-bottom: 16px;color: rgb(34, 34, 34);font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif;font-size: 16px;font-variant-numeric: normal;font-variant-east-asian: normal;line-height: 28px;white-space: normal;widows: 1;background-color: rgb(255, 255, 255);">打开电源，把扫描架打到+20度时，关闭扫描架电源，用手顺时针旋转，发现无线发射装置天线和接收偶有摩擦。无线发射装置天线和接收器之间的距离一般是1.5MM。实测是1.1MM左右。在垂直或者负角度时，由于离心力的作用，无线发射装置天线和接收器之间不摩擦，能正常使用。</p><p style="-webkit-tap-highlight-color: transparent;box-sizing: border-box;margin-top: 16px;margin-bottom: 16px;color: rgb(34, 34, 34);font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif;font-size: 16px;font-variant-numeric: normal;font-variant-east-asian: normal;line-height: 28px;white-space: normal;widows: 1;background-color: rgb(255, 255, 255);">当打正角度时，由于离心力的作用，使间隙变窄，就容易发生摩擦。一旦发生摩擦，机器立即保护，使X线停止发射，扫描中断。重新调整无线发射装置天线和接收器之间的间隙在1.5MM左右。我们采用胶片增加或减少的办法来调整间隙，使之在1.5MM左右即可。</p><p style="-webkit-tap-highlight-color: transparent;box-sizing: border-box;margin-top: 16px;margin-bottom: 16px;color: rgb(34, 34, 34);font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif;font-size: 16px;font-variant-numeric: normal;font-variant-east-asian: normal;line-height: 28px;white-space: normal;widows: 1;background-color: rgb(255, 255, 255);">开机，框架在+20度左右，进行CT扫描，一切工作正常。关机，盖上机壳。开机，进行水模校正，无论框架打到任何角度，CT机均工作正常。故障彻底排除。<img src="http://mmbiz.qpic.cn/mmbiz_png/A1DicCH9Vl6MK5Q8sxibcIbgTPECicmaSpkdc8Z9sZ08Rp4HCzAicktdjPgic7Q7trLRwDf6Z3zz8icJhxWHoCn4iaN0w/640?wx_fmt=png" data-type="png" class="" data-ratio="0.6100178890876565" data-w="559" /></p><p style="margin-top: 10px;max-width: 100%;min-height: 1em;color: rgb(51, 51, 51);font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 17px;letter-spacing: 0.544px;white-space: normal;background-color: rgb(255, 255, 255);text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;font-size: 14px;line-height: 21px;color: rgb(255, 255, 255);font-family: arial, helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;"><span class="" style="margin-right: 8px;padding: 4px 10px;max-width: 100%;border-radius: 5px;background-color: rgb(191, 0, 0);box-sizing: border-box !important;word-wrap: break-word !important;"></span></strong><br data-filtered="filtered" 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(51, 51, 51);font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 17px;letter-spacing: 0.544px;white-space: normal;background-color: rgb(255, 255, 255);text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;line-height: 2em;color: rgb(255, 0, 0);box-sizing: border-box !important;word-wrap: break-word !important;">ID: </span></strong></p><p style="max-width: 100%;min-height: 1em;color: rgb(51, 51, 51);font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 17px;letter-spacing: 0.544px;white-space: normal;background-color: rgb(255, 255, 255);text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">最具人气的医疗器械维修新媒体平台</span></p><p style="max-width: 100%;min-height: 1em;color: rgb(51, 51, 51);font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 17px;letter-spacing: 0.544px;white-space: 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src="http://mmbiz.qpic.cn/mmbiz/A1DicCH9Vl6MoypciaNOibiaxmVLk8eA6ibKL14uWjKsZwrWboQYKTfXqPicXycwL1icfia1pAG0VzlTX3MRR4FPV0ZtZA/640?" style="box-sizing: border-box !important;word-wrap: break-word !important;visibility: visible !important;width: auto !important;" /></span></span></strong></p>
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发表于 2020-10-21 12:24:37