公开(公告)号：WO2015165534A1

公开(公告)日：2015-11-05

申请号：PCT/EP2014/058881

申请日：2014-04-30

Applicant: GALVANIC LIMITED

Inventor： MCDONNELL, Daragh

IPC: A61B5/053 ,  A61B5/0408 ,  H01L21/3213 ,  H01L21/28

CPC classification number: A61B5/0531 ,  A61B5/0408 ,  A61B2562/0215 ,  A61B2562/029 ,  A61B2562/125 ,  C23C18/38 ,  C23F1/18 ,  C25D3/38 ,  C25D5/06 ,  C25D5/34 ,  C25D17/16

Abstract: The present invention is directed towards a method of manufacturing a sensor disc for use as a dry electrode in a skin conductance measuring device, the sensor disc comprising a plurality of layers of different materials and the method of manufacturing comprising the steps of etching a copper base layer; electroplating the copper base layer with an intermediate bright copper layer; plating the intermediate bright copper layer with an intermediate palladium plated layer; and, plating the intermediate palladium plated layer with a gold plated surface layer. The advantage of a method of manufacturing a sensor disc in accordance with the present invention is that a roughened surface is created by the etching. This increased roughness corresponds to an increase in surface area of skin in contact with the sensor disc. The larger contact area implies a larger sweat layer between skin and metal, resulting in reduced electrical impedance and hence an improvement in the signal-to-noise ratio of the skin conductance signal detected by the sensor disc. Furthermore, the surface roughness assists in trapping the sweat, also leading to reduced impedance and an improvement in the signal-to-noise ratio of the detected signals. Moreover, in addition to the high performance of the sensor discs manufactured by this process, the sensor discs produced also meet the ergonomic and aesthetic expectations of a contemporary mass market and may be advantageously utilised in a consumer electronics product.

Abstract translation: 本发明涉及一种制造用于皮肤电导测量装置中的干电极的传感器盘的方法，该传感盘包括多层不同材料，并且该制造方法包括以下步骤：蚀刻铜基底 层; 用中间明亮的铜层电镀铜基层; 用中间镀钯层电镀中间亮铜层; 并用镀金表面层电镀中间钯镀层。 根据本发明的制造传感器盘的方法的优点是通过蚀刻产生粗糙表面。 这种增加的粗糙度对应于与传感器盘接触的皮肤表面积的增加。 较大的接触面积意味着皮肤和金属之间的较大的汗液层，导致降低的电阻抗，并因此提高由传感器盘检测到的皮肤电导信号的信噪比。 此外，表面粗糙度有助于捕获汗液，同时也导致阻抗的降低和检测信号的信噪比的改善。 此外，除了通过该方法制造的传感器盘的高性能之外，所生产的传感器盘也符合当代大众市场的人机工程学和美学期望，并且可以有利地用于消费电子产品中。