公开(公告)号：WO1995031924A1

公开(公告)日：1995-11-30

申请号：PCT/US1995006203

申请日：1995-05-19

Applicant: HONEYWELL INC.

Inventor： HONEYWELL INC. ,  BOYER, Jeffrey, E. ,  BRASHAW, Mark, J. ,  CUMMINS, Brad, L. ,  ERICKSON, Timothy, K. ,  O'BRIEN, Gary, R., Jr. ,  SIES, Duane, J.

IPC: A47L15/46

CPC classification number: A47L15/4287 ,  A47L15/4297 ,  D06F39/004

Abstract: A plurality of fluid condition sensors are combined together to provide a sensor cluster that senses turbidity, temperature, conductivity and the movement of a ferromagnetic object. The plurality of sensors are attached to a substrate and encapsulated, by an overmolding process, with a light transmissive and fluid impermeable material. The sensor cluster can be disposed at numerous different locations within a body of fluid and does not require a conduit to direct the fluid to a particular location proximate the sensor. In a preferred embodiment of the present invention, a circuit is provided which monitors the signal strength of first and second light sensitive components to determine turbidity and, in addition, those signal strengths are also used to advantageously determine the most efficient magnitude of current necessary to drive a light source, such as a light emitting diode. By controlling the current to a light emitting diode as a function of the strength of light signal received by first and second light sensitive components, the turbidity sensor can be operated at a more efficient and effect level.

Abstract translation: 多个流体状态传感器组合在一起以提供感测浑浊度，温度，导电性和铁磁性物体移动的传感器簇。 多个传感器附接到基底，并通过包覆成型工艺用透光和流体不可渗透的材料进行封装。 传感器簇可以设置在流体体内的许多不同位置处，并且不需要导管将流体引导到靠近传感器的特定位置。 在本发明的优选实施例中，提供一种电路，其监测第一和第二光敏部件的信号强度以确定浊度，并且另外，这些信号强度也用于有利地确定最有效的电流幅度 驱动光源，例如发光二极管。 通过根据由第一和第二光敏部件接收的光信号的强度来控制发光二极管的电流，可以以更有效和效果的水平操作浊度传感器。