CN114210377B - 一种基于电场调控的便携式多功能可视化微流体设备 - Google Patents
一种基于电场调控的便携式多功能可视化微流体设备 Download PDFInfo
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Abstract
本发明公开了一种基于电场调控的便携式多功能可视化微流体设备,所述微流体设备包括可更换式顶盖组件、设备外壳组件和显示传输组件,其中:可更换式顶盖组件由送电板、电场调控PCB和顶盖组成;外壳组件由外壳、送电探针、可拆卸窗板和按钮开关组成;显示传输组件由芯片座、铜柱、移动支架、可调显微镜、调焦螺栓、图像传输PCB、电池和微流控芯片组成。该设备可靠性好,结构紧凑,重量轻,便携性好,具有模块化的特点,可以根据不同的需要替换不同的顶盖组件,对微流体进行电场调控,在实现介电泳、诱导电荷电渗、交流电渗、直流电热、交流电热等基础功能之外,还可实现对粒子或细胞的团聚、分选、偏转及微流体混合等功能。
Description
技术领域
本发明涉及一种微流体操作设备,具体涉及一种基于电场调控的便携式多功能可视化微流体设备。
背景技术
微流控是一项涉及机械、电子、流体、化学、材料和生物等内容的多学科交叉技术,主要以微纳尺度的流体和颗粒样本(包括工程颗粒、生化颗粒和液滴等)为研究和操纵对象。利用微纳加工方法,微流控装置实现了大型的、功能分散的传统生化实验室的微型化和集成化。相比于传统实验室内的生化研究方法,微流控技术具有成本低、试剂消耗少、响应速度快和分析精度高等显著优点,因而受到许多领域内科研人员的青睐和关注。但是目前微流控装置的外部实验设备复杂,无法在复杂室外环境中工作,为野外环境的微流控实验带来了较大困难。
发明内容
为了解决现有的微流体电动操作设备体积庞大、集成度低、操作流程复杂、所需外部设备不易搬运等问题,本发明提供了一种基于电场调控的便携式多功能可视化微流体设备。该设备可靠性好,结构紧凑,重量轻,便携性好,具有模块化的特点,可以根据不同的需要替换不同的顶盖组件,对微流体进行电场调控,在实现介电泳、诱导电荷电渗、交流电渗、直流电热、交流电热等基础功能之外,还可实现对粒子或细胞的团聚、分选、偏转及微流体混合等功能,可在一定程度上替代函数发生器及显微镜等复杂设备,满足微流控芯片操作与观察的使用要求。
本发明的目的是通过以下技术方案实现的:
一种基于电场调控的便携式多功能可视化微流体设备,包括可更换式顶盖组件、设备外壳组件和显示传输组件,其中:
所述可更换式顶盖组件设置在外壳组件的上端,由送电板、电场调控PCB和顶盖组成;
所述外壳组件由外壳、送电探针、可拆卸窗板和按钮开关组成;
所述显示传输组件安装在外壳组件的内部,由芯片座、铜柱、移动支架、可调显微镜、调焦螺栓、图像传输PCB、电池和微流控芯片组成;
所述送电板通过铰链连接在顶盖的一侧;
所述电场调控PCB固定在顶盖的内侧上表面上;
所述外壳的上端设置有凹槽,外侧设置有可拆卸窗板和按钮开关;
所述凹槽内部安装有送电探针,送电探针与电池的正负极连接;
所述送电板上设置有导电触点,送电板插入凹槽内,导电触点与送电探针相接触;
所述按钮开关共有上下两个,下侧开关用于开启可调显微镜的光源,上侧开关用于开启电场调控PCB,向微流控芯片中施加电场信号;
所述可拆卸窗板分为两个相同结构的上侧窗板和下侧窗板,上侧窗板和下侧窗板通过窗板上的卡扣固定在外壳上;
所述铜柱的上端与芯片座相连,铜柱的下端与外壳相连;
所述芯片座上设置有卡槽,微流控芯片位于卡槽内且与电场调控PCB接触;
所述移动支架安装在芯片座的下方,可调显微镜粘接在移动支架的下表面,可沿铜柱上下移动;
所述可调显微镜上设有放大倍数调整旋钮,放大倍数调整旋钮的位置与上侧窗板在同一高度上;
所述可调显微镜的下端设置有调焦螺栓,调焦螺栓的位置与下侧窗板在同一高度上;
所述图像传输PCB安装在外壳的内侧壁上,用于将可调显微镜采集到的图像数据通过wifi传输至接收设备。
相比于现有技术,本发明具有如下优点:
1、本发明的便携式微流控芯片操作设备实现了模块化设计,增强了可操控性和多任务适应性;
2、本发明能够对微流控芯片施加复杂的电场条件,弥补了当前现有便携微流控设备加电难的问题;
3、本发明在实现介电泳、诱导电荷电渗、交流电渗、直流电热、交流电热等基础功能之外,还可实现对粒子或细胞的团聚、分选、偏转及微流体混合等功能;
4、本发明将原有复杂电源设备与显微设备集成在一个装置内,大幅降低了使用成本;
5、本发明将微流控装置体积减小到了手掌尺寸,便携性好,可以在复杂室外条件下工作,对微流控芯片的工程应用具有一定参考价值。
附图说明
图1是本发明便携式微流控芯片操作设备的示意图;
图2是本发明便携式微流控芯片操作设备的剖视图;
图3是本发明便携式微流控芯片操作设备的可更换式顶盖组件的倒置示意图;
图4是本发明便携式微流控芯片操作设备的设备外壳组件示意图;
图5是本发明便携式微流控芯片操作设备的设备外壳组件示意图;
图6是本发明便携式微流控芯片操作设备的显示传输组件示意图;
图7是粒子在没有电场调控时的运动轨迹;
图8是粒子在电场调控的作用下发生偏转的运动轨迹。
具体实施方式
下面结合附图对本发明的技术方案作进一步的说明,但并不局限于此,凡是对本发明技术方案进行修改或者等同替换,而不脱离本发明技术方案的精神和范围,均应涵盖在本发明的保护范围中。
一种基于电场调控的便携式多功能可视化微流体设备,如图1-6所示,所述微流体设备包括可更换式顶盖组件1、设备外壳组件2和显示传输组件3,其中:
所述可更换式顶盖组件1设置在外壳组件的上端,由送电板1-1、电场调控PCB1-2和顶盖1-3组成;
所述外壳组件2主要用于设备整体零部件的安装和固定,由外壳2-1、送电探针2-2、可拆卸窗板2-3和按钮开关2-4组成;
所述显示传输组件3通过螺丝安装在外壳组件的内部,主要进行微流控芯片关键结构的放大观察和图像的无线传输,由芯片座3-1、铜柱3-2、移动支架3-3、可调显微镜3-4、调焦螺栓3-5、图像传输PCB3-6、电池3-7和微流控芯片3-8组成;
所述送电板1-1通过铰链连接在顶盖1-3的一侧,可进行180度旋转;
所述顶盖1-3为开口盒式结构,电场调控PCB1-2主要进行电源信号的转化与输出,通过螺丝固定在顶盖1-3的内侧上表面上;
所述外壳2-1的背部设有与送电板1-1形状匹配的凹槽,送电板1-1插入凹槽内,即可实现顶盖1-3安装;
所述凹槽内部安装有两个送电探针2-2,送电探针2-2分别连在电池3-7的正负极上,用于将电源信号传输给可更换式顶盖组件1;
所述送电板1-1上设置有两个导电触点,将送电板1-1插入外壳2-1背部的凹槽内,送电板1-1的导电触点与送电探针2-2相接触,即可实现电路联通的功能;
所述外壳2-1的背部设有可拆卸窗板2-3,可拆卸窗板2-3分为上下两个相同结构的窗板,可拆卸窗板2-3通过可拆卸窗板2-3上的卡扣固定在外壳2-1上,上侧窗板拆下后可以通过放大倍数调整旋钮对可调显微镜3-4的放大倍数进行调整,下侧窗板拆下后可以通过旋转调焦螺栓3-5对可调显微镜3-4与微流控芯片3-8之间的焦距进行调整,以此满足更多的功能要求;
所述外壳2-1的正面左侧设有按钮开关2-4,按钮开关2-4共有上下两个,下侧开关用于开启可调显微镜3-4的光源,上侧开关用于开启电场调控PCB1-2,向微流控芯片3-8中施加电场信号;
所述铜柱3-2共有四个,上端通过螺丝与芯片座3-1相连,下端通过螺丝与外壳2-1相连,移动支架3-3与可调显微镜3-4粘接在一起,可沿铜柱3-2上下移动;
所述可调显微镜3-4上设有放大倍数调整旋钮,放大倍数调整旋钮的位置与上侧窗板在同一高度上,因此拆下上侧窗板后即可观察到放大倍数调整旋钮,可以改变可调显微镜3-4自身放大倍数;可调显微镜3-4的下端设置有调焦螺栓3-5,调焦螺栓3-5的位置与下侧窗板在同一高度上,因此拆下下侧窗板后即可观察到调焦螺栓3-5,调焦螺栓3-5可以通过旋转来使可调显微镜3-4上下移动,从而改变可调显微镜3-4与微流控芯片3-8之间距离,从而实现调整焦距的功能;
所述图像传输PCB3-6安装在外壳的内侧壁上,可以实现将可调显微镜3-4采集到的图像数据通过wifi传输至接收设备,从而能够实现手机或平板电脑观测图像的功能。
具体操作方法如下:
1、打开装置及放置微流控芯片:首先根据所需功能选择相应的顶盖组件1,并将其安装在设备外壳组件2上,由于送电板1-1和顶盖1-3之间是铰链连接,因此顶盖可以在外力作用下向上开启,开启后即可看到芯片座3-1,此时即可将微流控芯片3-8放在芯片座3-1的卡槽内,合上顶盖1-3,准备工作完成。
2、开启显微设备:放置好芯片后,打开下侧按钮开关2-4,开启可调显微镜3-4的光源,同时使图像传输PCB3-6通电,散发wifi信号,观察到光源亮起后,即可打开手机或平板电脑等智能电子设备,连接显微设备指定的wifi,打开相应的应用程序后即可观察到图像,根所需的放大倍数,拆下上侧窗板,调整可调显微镜3-4放大倍数,随后拆下下侧窗板,调节调焦螺栓3-5,使得观察到的图像清晰,调整完成后安装好两个窗板。
3、微流控芯片操作:打开上侧按钮开关2-4,来自电池3-7的电信号经过外壳2-1上的送电探针2-2,传送到送电板1-1和电场调控PCB1-2上,电场调控PCB1-2与微流控芯片3-8直接接触,从而实现了微流控装置电场的施加,在手机应用程序上即可看到微流控芯片3-8内液体或粒子的动作情况。
4、关闭装置:首先关闭上侧按钮开关2-4,断开微流控芯片3-8上的电场,随后关闭下侧按钮开关,关闭可调显微镜3-4和图像传输PCB3-6,此时手机应用程序上不会再显示图像;打开顶盖1-3,取出微流控芯片3-8,合上顶盖,至此完成了微流控操作装置的关闭操作。
本发明的便携式微流控芯片操作设备具有模块化的特点,可以根据不同的需要替换不同的顶盖组件;具有对微流体施加电场的功能,可以产生直流低压、低/高频低压正弦、高频低压方波等信号;所搭载的显微模块具有调整放大倍数与调整焦距的功能,可用于观察不同的芯片;可靠性好,结构紧凑,重量轻,体积小,便携性好;可在一定程度上替代函数发生器及显微镜等复杂设备,满足微流控芯片操作与观察的使用要求。
实施例:
以利用介电泳实现粒子偏转的功能为例,电场调控PCB1-2可以通过电路产生16Vpp、1MHz的电信号,微流控芯片内原本的粒子如图7所示,粒子从左向右运动,可以看到右边两个出口内都有粒子。按下位于上侧的按钮开关2-4,使顶盖组件电路联通,即可对芯片施加电场信号,粒子偏转后如图8所示。从图8可以看出,粒子在电场作用下都实现了向上偏转。
该装置可以快速的检测不同电压频率对微流控芯片的影响,例如快速观察粒子大小变化,电压频率变化对粒子运动的影响。
Claims (7)
1.一种基于电场调控的便携式多功能可视化微流体设备,其特征在于所述微流体设备包括可更换式顶盖组件、设备外壳组件和显示传输组件,其中:
所述可更换式顶盖组件设置在外壳组件的上端,由送电板、电场调控PCB和顶盖组成;
所述外壳组件由外壳、送电探针、可拆卸窗板和按钮开关组成;
所述显示传输组件安装在外壳组件的内部,由芯片座、铜柱、移动支架、可调显微镜、调焦螺栓、图像传输PCB、电池和微流控芯片组成;
所述送电板通过铰链连接在顶盖的一侧;
所述电场调控PCB固定在顶盖的内侧上表面上;
所述电场调控PCB是可更换组件,可以根据需要产生直流低压、低/高频低压正弦或高频低压方波信号;
所述外壳的上端设置有凹槽,外侧设置有可拆卸窗板和按钮开关,
所述凹槽内部安装有送电探针,送电探针与电池的正负极连接;
所述送电板上设置有导电触点,送电板插入凹槽内,导电触点与送电探针相接触;
所述按钮开关共有上下两个,下侧开关用于开启可调显微镜的光源,上侧开关用于开启电场调控PCB,向微流控芯片中施加电场信号;
所述可拆卸窗板分为两个相同结构的上侧窗板和下侧窗板,上侧窗板和下侧窗板通过窗板上的卡扣固定在外壳上;
所述铜柱的上端与芯片座相连,下端与外壳相连;
所述芯片座上设置有卡槽,微流控芯片位于卡槽内且与电场调控PCB接触;
所述移动支架安装在芯片座的下方,可调显微镜粘接在移动支架的下表面,可沿铜柱上下移动;
所述可调显微镜上设有放大倍数调整旋钮;
所述可调显微镜的下端设置有调焦螺栓;
所述图像传输PCB安装在外壳的内侧壁上,用于将可调显微镜采集到的图像数据通过wifi传输至接收设备。
2.根据权利要求1所述的基于电场调控的便携式多功能可视化微流体设备,其特征在于所述凹槽、可拆卸窗板设置在外壳的背部。
3.根据权利要求1所述的基于电场调控的便携式多功能可视化微流体设备,其特征在于所述按钮开关设置在外壳的正面。
4.根据权利要求1所述的基于电场调控的便携式多功能可视化微流体设备,其特征在于所述顶盖为开口盒式结构。
5.根据权利要求1所述的基于电场调控的便携式多功能可视化微流体设备,其特征在于所述放大倍数调整旋钮的位置与上侧窗板在同一高度上。
6.根据权利要求1所述的基于电场调控的便携式多功能可视化微流体设备,其特征在于所述调焦螺栓的位置与下侧窗板在同一高度上。
7.根据权利要求1所述的基于电场调控的便携式多功能可视化微流体设备,其特征在于所述送电板可进行180度旋转。
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