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Aperture assembly for use with a photosensor system and a securing mechanism for the aperture assembly

A photoelectric sensor, sensor technology, used in electric components, electrical components, semiconductor devices, etc.

Active Publication Date: 2010-08-18
SHOP VAC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The radiation is thus blocked by the encoder for a short time interval

Method used

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  • Aperture assembly for use with a photosensor system and a securing mechanism for the aperture assembly
  • Aperture assembly for use with a photosensor system and a securing mechanism for the aperture assembly
  • Aperture assembly for use with a photosensor system and a securing mechanism for the aperture assembly

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Embodiment Construction

[0023] While the following text gives a detailed description of various embodiments, it should be understood that the legal scope of this invention is defined by the words of the claims at the end of this disclosure. This detailed description is by way of example only, and not all possible embodiments are described since describing them would be impractical, if not impossible. Numerous alternative embodiments could be implemented, using either current technology or technology developed after the filing date of this patent, which would still fall within the scope of the claims.

[0024] It should be understood that no clarity is intended unless a term is clearly defined in this patent using the sentence "When used herein, the term '__' is defined herein to mean..." or a similar sentence limit the meaning of the term beyond its plain or ordinary meaning, either expressly or implicitly, and such term should not be construed as limiting the scope based on any statement in any part...

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Abstract

A cost-effective photosensor system for rotor position detection includes securing an aperture assembly to an off-the-shelf infrared radiation-emitting component and / or an off-the shelf infrared radiation-detecting component. The application discloses an aperture assembly that may be stamped from a thin, opaque, elongated piece of plastic having an aperture window through which a radiation beam may pass and be focused. The aperture assembly also has a locking system for securing the assembly to the off-the-shelf photosensor system component, and an alignment system to direct the infrared radiation beam. A replaceable stamped aperture assembly for use in a rotor-sensing system and a method of providing a replaceable aperture assembly and securing it to an infrared component of a photosensor system are also disclosed.

Description

technical field [0001] The present disclosure generally relates to an aperture assembly for a photoelectric sensor system used in a rotor sensing system of a switched reluctance motor and a fixture for the aperture assembly. Background technique [0002] A switched reluctance or brushless motor is an electric motor that includes a rotor and a stator. Torque in a reluctance motor is produced by the tendency of the rotor to move relative to the stator to a position where the reluctance of the magnetic circuit is minimized (ie, where the reluctance of the excited stator windings is maximized). In a switched reluctance motor, a circuit senses the angular position of the rotor, thereby energizing the phases of the stator windings according to the position of the rotor. [0003] Common circuit devices for rotor orientation / position detection are photoelectric sensors or transmissive sensor systems. The photosensor system includes an infrared radiation (IR) emitting component ali...

Claims

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Application Information

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IPC IPC(8): H01L31/0203
CPCH01L31/0203H02K5/15H02K2203/03H02K11/22
Inventor 尼尔·N·诺雷尔
Owner SHOP VAC
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