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从分析全自动胶囊充填机发生胶囊分离不畅等故障原因入手,提出了解决方法,通过改进后设备的实际运行达到了改进的预期目标。 相似文献
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间歇工作图像胶囊内窥镜的设计与实验 总被引:1,自引:0,他引:1
针对图像胶囊内窥镜受到能量限制而工作时间较短的问题,基于图像胶囊在人体肠道蠕动的速度设计了一种间歇工作模式的微型化、低功耗图像胶囊内窥镜。采用霍尔开关代替干簧管作为电源总开关,进一步降低了图像胶囊的体积。通过对电池电源模块、模拟开关电路和软件进行设计研究,实现了无线发射和照明电路的间歇供电和图像传感器的间歇休眠。动物实验验证了整个系统的工作时间和可行性。结果表明,整个系统的尺寸仅为Φ12mm×25mm,1s间隔工作模式下系统的工作时间超过9h。 相似文献
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胶囊微机电系统在体内所采集到的信号是利用无线信号进行传输的。无线信号有可能无法穿透胶囊外壳和在人体组织内造成剧烈衰减。本文首先从理论上分析了无线信号的频率、天线形状、胶囊外壳材料和人体组织等方面对系统无线信号传输性能的影响,然后计算了2.4 GHz的天线参数,最后对胶囊采用不同形状的天线、外壳材料和在不同的外围人体组织中进行了传输距离的实验研究。 相似文献
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介绍了气动式硬胶囊双联播囊器的设计方案和工作原理,解决了研制过程中一些关键结构的设计问题。 相似文献
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为了满足家庭保健的需求,设计了便携式高压软体舱.介绍了软体舱的总体结构,根据便携式高压软体舱的功能需求,设计了增、减压控制系统.论述了舱体恒压功能的具体实现方法,并对其工作原理进行了阐述.通过安装调试,表明该系统安全、稳定,控制压力平稳,达到了预期设计要求. 相似文献
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The information on the frictional resistance of a self-propelled robotic capsule endoscope moving inside the body is very important for the design and the performance enhancement of such parameters of the capsule endoscope as power consumption, motion control and positioning accuracy. Based on this motivation, the ultimate goal of this research was to develop an analytical model that can predict the frictional resistance of the capsule endoscope moving inside the living body. In this work, experimental investigations of the fundamental frictional characteristics and the viscoelastic behaviors of the small intestine were performed by using custom-built testers and various capsule dummies. The small intestine of a pig was used for the experiments. Experimental results showed that the average frictional force was 10–50 mN and higher moving speed of the capsule dummy resulted in larger frictional resistance of the capsule. In addition, the friction coefficient did not change significantly with respect to the apparent area of contact between the capsule dummy and the intestine, and also the friction coefficients decreased with an increase in the normal load and varied from 0.08 to 0.2. Such frictional behaviors could be explained by the lubrication characteristics of the intestine surface and typical viscoelastic characteristics of the small intestine material. Also, based on the experimental results, a viscoelasticity model for the stress relaxation of the small intestine could be derived. 相似文献
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