公开(公告)号：US06663353B2

公开(公告)日：2003-12-16

申请号：US10214158

申请日：2002-08-08

申请人： James H. Lipscomb ,  Larry Jurik ,  Bernard Katz ,  Michael J. Keating ,  Stone Klengler ,  John J. Kotlarik ,  Mieczyslaw Wroblewski

发明人： James H. Lipscomb ,  Larry Jurik ,  Bernard Katz ,  Michael J. Keating ,  Stone Klengler ,  John J. Kotlarik ,  Mieczyslaw Wroblewski

IPC分类号： G01F2202

CPC分类号： G01N35/1009 ,  G01N35/1016 ,  G01N2035/1025 ,  Y10T137/8326

摘要： A sensor for detecting contact of a fluid delivery probe with a fluid surface and for detecting fluid flow through the probe includes a first electrode disposed along a fluid flow path of the probe upstream from a distal tip of the probe and a second electrode longitudinally spaced and electrically isolated from the first electrode and disposed at the distal tip of the probe. An oscillating signal is transmitted through the first electrode, and at least a portion of the signal is received through the second electrode. Through changes in the received signal due to the distal tip of the probe coming into contact with a fluid surface or due to fluid flow through the conduit between the first and second electrodes, fluid surface contact and fluid flow can be detected. A pressure sensor can be employed to monitor internal fluid pressure within the fluid conduit of the fluid delivery probe as a secondary, redundant mechanism for detecting fluid flow through the conduit.

摘要翻译： 用于检测流体传送探针与流体表面的接触并用于检测通过探针的流体流动的传感器包括沿着探针的远侧末端上游的探针的流体流动路径设置的第一电极和纵向间隔开的第二电极， 与第一电极电隔离并设置在探针的远端。 振荡信号通过第一电极传输，信号的至少一部分通过第二电极被接收。 通过由于探针的远端与流体表面接触或由于流体流过第一和第二电极之间的导管而导致的接收信号的变化，可以检测流体表面接触和流体流动。 可以使用压力传感器来监测流体输送探针的流体导管内的内部流体压力，作为用于检测通过导管的流体流动的次要冗余机构。

公开(公告)号：US06658946B2

公开(公告)日：2003-12-09

申请号：US10214161

申请日：2002-08-08

申请人： James H. Lipscomb ,  Larry Jurik ,  Bernard Katz ,  Michael J. Keating ,  Stone Klengler ,  John J. Kotlarik ,  Mieczyslaw Wroblewski

发明人： James H. Lipscomb ,  Larry Jurik ,  Bernard Katz ,  Michael J. Keating ,  Stone Klengler ,  John J. Kotlarik ,  Mieczyslaw Wroblewski

IPC分类号： G01F2202

CPC分类号： G01N35/1009 ,  G01N35/1016 ,  G01N2035/1025 ,  Y10T137/8326

摘要： A sensor for detecting contact of a fluid delivery probe with a fluid surface and for detecting fluid flow through the probe includes a first electrode disposed along a fluid flow path of the probe upstream from a distal tip of the probe and a second electrode longitudinally spaced and electrically isolated from the first electrode and disposed at the distal tip of the probe. An oscillating signal is transmitted through the first electrode, and at least a portion of the signal is received through the second electrode. Through changes in the received signal due to the distal tip of the probe coming into contact with a fluid surface or due to fluid flow through the conduit between the first and second electrodes, fluid surface contact and fluid flow can be detected. A pressure sensor can be employed to monitor internal fluid pressure within the fluid conduit of the fluid delivery probe as a secondary, redundant device for detecting fluid flow through the conduit.

摘要翻译： 用于检测流体传送探针与流体表面的接触并用于检测通过探针的流体流动的传感器包括沿着探针的远侧末端上游的探针的流体流动路径设置的第一电极和纵向间隔开的第二电极， 与第一电极电隔离并设置在探针的远端。 振荡信号通过第一电极传输，信号的至少一部分通过第二电极被接收。 通过由于探针的远端与流体表面接触或由于流体流过第一和第二电极之间的导管而导致的接收信号的变化，可以检测流体表面接触和流体流动。 可以使用压力传感器来监测流体输送探针的流体导管内的内部流体压力，作为用于检测通过导管的流体流动的辅助冗余装置。