Sensor apparatus and self-propelled floor cleaning appliance having a sensor apparatus

  • US 20050172445A1
  • Filed: 01/04/2005
  • Published: 08/11/2005
  • Est. Priority Date: 07/08/2002
  • Status: Active Grant
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First Claim
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1. Sensor apparatus for a self-propelled floor cleaning appliance for detecting a down step, having a transmission unit and a reception unit for infrared radiation and having evaluation electronics for evaluating the intensity of the radiation received, wherein the sensor apparatus has a reception unit and a first and a second transmission unit, the second transmission unit being disposed at a distance from a connecting straight line running through the reception unit and the first transmission unit.

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