PARTICULATE MATTER SENSOR

专利名称：PARTICULATE MATTER SENSOR发明人：Harald Etschmaier,Bassam Hallal,Elisa

Parola,Georg Roehrer

申请号：US17269889申请日：20181213

公开号：US20210318220A1公开日：20211014

专利附图：

摘要：A particulate matter sensor module includes a light source and a light detectormounted on a substrate. A housing is attached to the substrate and includes first andsecond sections attached to one another in a stack over the substrate such that the first

section is disposed between the substrate and the second section. The first and secondsections, in combination, define a light reflection chamber, a fluid flow conduit, a particle-light interaction chamber, and a light trap chamber. The first section has a first aperturethrough which light emitted by the light source can pass to a reflective surface within thelight reflection chamber. The reflective surface is configured to reflect the light towardthe particle-light interaction chamber where the light can interact with particles in a fluidflowing in the fluid flow conduit. The first section has a second aperture through whichlight scattered in the particle-light interaction chamber as a result of interaction with oneor more of the particles can pass for sensing by the detector. The fluid flow conduitincludes a fluid inlet portion having an end coupled directly to the particle-lightinteraction chamber.

申请人：ams AG

地址：Premstaetten AT

国籍：AT

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