CN117604708A - 一体成型针织及缝绣集成的缓压型压力监测传感器 - Google Patents
一体成型针织及缝绣集成的缓压型压力监测传感器 Download PDFInfo
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Abstract
本发明公开了一体成型针织及缝绣集成的缓压型压力监测传感器。本发明提供了一种一体成型针织及缝绣集成的缓压型压力监测传感器,在针织提花单层及双层不连接空气层结构一体的方式基础上,局部利用纱嘴局部提花带入导电纱线,面部采用平针夹浮线的单面局部提花结构,中间加入一定比例的导电纱线及膨体纱线,从而编织形成传感器区域。本发明将双面及衬纬组织复合在一起织造,使用导电纱局部形成双层的压电层以获得更多的弹力及更大电阻变化量程。利用集成缝结构为附加传感区,使传感器在剧烈运动下的稳定性提升,尤其加入膨体纱及双层处的弹性发泡硅胶或TPU的缓压垫片使得弹性程度及压力接触面得以缓冲及接触程度得以强化。
Description
技术领域
本发明涉及一体成型柔性针织压力传感器技术领域,尤其涉及是一种用于运动压力碰撞及骨骼凹陷处压力检测的舒适型可穿戴传感器。
背景技术
柔性压力传感器是一种将压力转化为电信号的传感器,广泛用于可穿戴电子设备和人机交互。传感机制分为压阻式、电容式、压电式,其中压阻式结构简单、制备方便、成本低廉、性能优越。
基于复合材料的柔性压力传感器的功能材料由柔性基体和导电填料构成。柔性基底选择包括PDMS、PET、PI、PU、Epoxy、SR;导电填料包括CNT、石墨烯等。调整材料比例可以调控传感性能,混合使用多种导电填料可提高性能。柔性传感器越来越多地使用复合材料实现协同导电网络,提高性能。制备简便、成本低廉、性能优越的柔性传感器在可穿戴设备、人机交互等领域有广阔应用前景。
虽然现在基于薄膜式电阻传感器如PVDF柔性压电薄膜等可应用于智能穿戴领域,柔性压力传感器一般被用于测量人体运动信号、生理信号等。但是现有的柔性压力传感器并不适用于日常穿着,脆性较强,表面易滑动,且手工的粘贴、单一的缝纫等方式影响其稳定性和牢固性。同时现有的柔性压力传感器尤其在一些运动场景中也较难舒适地使用,尤其是如要有缓压保护时的状态下影响对动态测量结果及效果的真实再现。
在行走、奔跑以及跳跃时,足部作为人体结构中重要的支撑点和负重关节,在人体的功能或脊椎生长发育过程中起着至关重要的作用。同时,足部也是较易出现各种问题的一个身体部位,比如儿童和青少年为扁平足的高发人群,长期不正确的运动、走路姿态容易导致足部结构发生病变。运动状态下的压力分布检测往往需要特定的舒适的传感部件,人们在剧烈运动受压中难以做到即时了解压力状况。现有可穿戴的柔性缓压传感器技术还有待于改进和发展。
发明内容
本发明针对现有技术的不足,提供了一体成型针织及缝绣集成的缓压型压力监测传感器、一种缓压鞋垫以及其应用。
为实现上述目的,本发明所采用的技术方案是:
第一方面,本发明提供了一种一体成型针织及缝绣集成的缓压型压力监测传感器,在针织提花单层及双层不连接空气层结构一体的方式基础上,局部利用纱嘴局部提花带入导电纱线,面部采用平针夹浮线的单面局部提花结构,中间加入一定比例的导电纱线及膨体纱线,从而编织形成传感器区域。
第二方面,本发明提供了一种缓压鞋垫,带有上述压力监测传感器。
第三方面,本发明提供了一种所述的缓压鞋垫在足部疾病检测中的应用。
本发明的有益效果是:本发明利用电脑横机将双面及衬纬组织复合在一起织造,使用100-1000欧姆/cm的导电纱局部形成双层的压电层以获得更多的弹力及更大电阻变化量程。
利用集成缝结构为附加传感区,使传感器在剧烈运动下的稳定性提升,尤其加入膨体纱及双层处的弹性发泡硅胶或TPU的缓压垫片使得弹性程度及压力接触面得以缓冲及接触程度得以强化,是一种适合规模化、智能化生产的,尤其适合用于运动压力碰撞及骨骼凹陷处压力检测的缓压型可穿戴传感器。
附图说明
图1是本申请实施例的单双层织造一体成型示意图。
图2是本申请实施例的单双层织造一体成型剖面示意图。
图3是本申请实施例的面层压电传感区平针夹浮线单面局部提花结构示意图。
图4是应用例的结构示意。
图5是鞋垫传感器a-e的内部线路图。
具体实施方式
下面结合附图和实施例对本发明作进一步说明。
本申请实施例提供了一体成型针织及缝绣集成的缓压型压力监测传感器:
如图1和图2所示,本实施例利用电脑横机将双面及衬纬组织复合在一起织造,局部形成单层区1及双层不连接空气层区2的一体成型方式;在织物表面的局部提花区3及中间分别加入100-1000欧姆/cm的导电纱线4,利用的结构特性,同步织入膨体纱线5,使面料有弹性和缓压作用。具体是局部利用局部提花纱嘴带入导电纱线,面部采用特殊的两类平针夹浮线的单面局部提花结构,中间加入一定比例的导电纱线及膨体纱线,从而编织形成传感器区域。
在这些区域也可添加弹性海绵等材料,施压导致导电纱线的电阻发生变化。传感区域通过电路与中央处理器相连接,并将处理后的信号数据传输到显示器上,通过各个传感器的电压大小及变化来实现压力监测功能,同时具备舒适性。在夹层中间衬入膨体纱线,使得这部分区域厚度高于其它区域,具有一定弹性以及缓冲作用。
在某一实施例中,所述双层不连接空气层区2后期分别可以填充2-5mm的发泡硅胶或TPU的缓压垫片6,使上面的压电层获得更多的弹力及更大电阻变化量程。其它部分材料采用普通不导电纱线7,用单层结构连接。
进一步,为增强柔性针织压力传感器的牢固性及稳定性,在平包缝绣区域8增加一组采用导电线为面线的平包针为附加传感区。
进一步,局部提花区放大示意9中,见图3,导电纱线(粗线)与普通不导电纱线(细线)采用全平针局部提花结构10或平针1隔1夹浮线单面局部提花结构11进行织造,以获得不同的电阻变化量程,两端将两侧露出的导电纱浮线引接至双层区的两侧,并将其与两侧低电阻导电绣花线电路相连接,分别接入后面的信号处理电路中。
当施加压力到复合的压阻传感区域时,电阻值发生变化,使相应连接的电桥电路中的电压变化。利用信号放大器将此电压变化放大,模数转换器(ADC)将其转化为数字信号,并通过输出接口将数据传输到压力测量设备中。主要用于检测被压到的位置、受力大小和次数,以及一些骨头凹陷处如足弓处的受力范畴。此传感器可以放至于足底的鞋跟或手套的臂套中,使此柔性传感器穿着缓压度极大提高。
在某一实施例中,尤其涉及在需要预防碰撞受压的区域织出较大双层结构,如用于脚部时,就在第一跖骨处、第五跖骨处、足弓区、以及脚后跟区域进行织造。此较大双层结构处,利用局部提花的结构,将用混纺导电纱编织的压阻式压力传感的结构分布于相应受压区域,编织形成1*1cm,1.5*1.5cm,或2*2cm传感器区域。
以上传感区域的周边需要留出再大一些的双层不连接空气层区,在骨头凹陷的一些检测地带,如足弓双层区域处,后期分别在膨体纱下面再填充2-5MM的发泡硅胶或TPU的缓压垫片,使上面的压电层避免接触不到、获得更多的碰撞或压力弹力,及更大电阻变化量程。
进一步,其中的膨体纱线及硅胶或TPU的缓压垫片,分别在前脚掌、足弓和后脚跟三处特定区域形成比其他区域更厚的效果,在运动时起到保护前脚掌,为足跟提供软支撑,减小足跟受力的作用。并且充分支撑足弓,防止足弓塌陷。可以在运动健身时达到需要保护部位的压力监测、步态矫正以及监测预防受伤的目的
如图4所示,本申请实施例还提供了一种缓压鞋垫。由鞋垫传感器区域12,鞋垫正面凸起区域13及单层织造区域14组成。在鞋垫传感器区域12的中间足弓区,不同的足弓人群可以选择不同高度填充弹性体。通过电阻的变化,传感器可用于检针织鞋垫在人体各种不同运动状态下的压力。
如图5所示,本申请实施例还提供了一种缓压鞋垫在足部疾病检测中的应用。
如扁平足人群站立时,足底受力向脚掌中部、前部内侧及后跟内侧转移,且第一跖骨压力升高,因此扁平足人群使用该款鞋垫时,导电纱线16电阻发生变化,传感器a压力示数变大,且传感器e示数比传感器d的压力示数大,传感器b的示数比传感器a的示数大。传感区域通过中央处理器接口15连接中央处理器,将处理后的信号数据传输到显示器上。
当足底发生溃疡时,跖骨区压力峰值异常增大,并且步行时足底与地面接触的时间明显大于常人,步态周期也随之延长,该群体使用此鞋垫时,传感器a和传感器b的压力示数都增大,且传感器压力示数变化周期也增大。
因此可以通过鞋底四个传感器点的压力变化及分布来判定是否患有足部疾病,并且可以及时调整步态。
以上结合附图对本发明的具体实施方式作了说明,但这些说明不能被理解为限制了本发明的范围,本发明的保护范围由随附的权利要求书限定,任何在本发明权利要求基础上的改动都是本发明的保护范围。
Claims (9)
1.一体成型针织及缝绣集成的缓压型压力监测传感器,其特征在于:在针织提花单层及双层不连接空气层结构一体的方式基础上,局部利用纱嘴局部提花带入导电纱线,面部采用平针夹浮线的单面局部提花结构,中间加入一定比例的导电纱线及膨体纱线,从而编织形成传感器区域。
2.根据权利要求1所述的一体成型针织及缝绣集成的缓压型压力监测传感器,其特征在于:导电纱线与不导电纱线采用全平针局部提花结构或平针1隔1夹浮线单面局部提花结构进行织造,以获得不同的电阻变化量程。
3.根据权利要求1或2所述的一体成型针织及缝绣集成的缓压型压力监测传感器,其特征在于:双层不连接空气层区填充有缓冲结构,从而使上面的压电层获得更多的弹力及更大电阻变化量程。
4.根据权利要求3所述的一体成型针织及缝绣集成的缓压型压力监测传感器,其特征在于:所述的缓冲结构采用2-5毫米的发泡硅胶或TPU的缓压垫片。
5.根据权利要求1所述的一体成型针织及缝绣集成的缓压型压力监测传感器,其特征在于:在平包缝绣区域增加一组采用导电线为面线的平包针为附加传感区。
6.根据权利要求2所述的一体成型针织及缝绣集成的缓压型压力监测传感器,其特征在于:通过浮线结构设计,将两侧露出的导电纱浮线引接至双层不连接空气层区的两侧,并将其与低电阻导电绣花线电连接,分别接入后续的信号处理电路。
7.一种缓压鞋垫,带有权利要求1至6中任一项所述的压力监测传感器。
8.根据权利要求7所述的一种缓压鞋垫,其特征在于:所述的压力监测传感器设置于第一跖骨处、第五跖骨处、足弓区、以及脚后跟区域。
9.一种权利要求7或8所述的缓压鞋垫在足部疾病检测中的应用。
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