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Electrically communtated motor with data communication device

  • US 8,598,833 B2
  • Filed: 12/13/2010
  • Issued: 12/03/2013
  • Est. Priority Date: 12/11/2009
  • Status: Expired due to Fees
First Claim
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1. An electronically commutated motor (ECM) comprising:

  • windings;

    a power switch configured to provide pulse width modulated (PWM) power signals to the windings, wherein the power switch is configured to generate substantial electromagnetic noises during its switching operation;

    an infrared transceiver configured to communicate with an external device using infrared signals and configured to convert electrical signals from and to infrared signals that carry data;

    an electromagnetic shield configured to substantially shield the infrared transceiver from the electromagnetic noises from the power switch; and

    a housing enclosing the windings, the power switch, and the infrared transceiver,wherein the electromagnetic shield comprises an electrically conductive case and an optical panel connected to the electrically conductive case, wherein the optical panel comprises an electrically conductive grid allowing transmission of infrared signals therethrough.

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