发明授权
- 专利标题: Force sensing sheet
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申请号: US14341328申请日: 2014-07-25
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公开(公告)号: US09642470B2公开(公告)日: 2017-05-09
- 发明人: Geoffrey L. Taylor
- 申请人: Stryker Corporation
- 申请人地址: unknown Kalamazoo
- 专利权人: Stryker Corporation
- 当前专利权人: Stryker Corporation
- 当前专利权人地址: unknown Kalamazoo
- 代理机构: Warner Norcross & Judd LLP
- 主分类号: G01L1/22
- IPC分类号: G01L1/22 ; G01L3/00 ; G01D7/00 ; A47C27/08 ; G01L1/18 ; G01N3/08 ; H01L29/84 ; G01L1/20 ; G01L5/22 ; A61B5/103 ; A61B5/00 ; G01L1/16
摘要:
A support apparatus includes a force sensing array positioned thereon that includes multiple layers of material that are arranged to define an elastically stretchable sensing sheet. The sensing sheet may be placed underneath a patient to detect interface forces or pressures between the patient and the support structure that the patient is positioned on. The force sensing array includes a plurality of force sensors. The force sensors are defined where a row conductor and a column conductor approach each other on opposite sides of a force sensing material, such as a piezoresistive material. In order to reduce electrical cross talk between the plurality of sensors, a semiconductive material is included adjacent the force sensing material to create a PN junction with the force sensing material. This PN junction acts as a diode, limiting current flow to essentially one direction, which, in turn, reduces cross talk between the multiple sensors.
公开/授权文献
- US20140331412A1 FORCE SENSING SHEET 公开/授权日:2014-11-13