Sensor apparatus and self-propelled floor cleaning appliance having a sensor apparatus
First Claim
1. Sensor apparatus for enabling a self-propelled floor cleaning appliance to detect a down step, comprising:
- first and second transmission units and a reception unit for infrared radiation; and
evaluation electronics for evaluating an intensity of radiation received by the reception unit from the transmission units,wherein;
the second transmission unit is disposed at a distance from a connecting straight line running through the reception unit and the first transmission unit, andthe first and second transmission units focus the infrared radiation into a common focal point.
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Accused Products
Abstract
The invention relates to a 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. To develop the sensor apparatus in such a manner that a down step or a steep downslope of the floor surface can be determined more reliably, while the sensor apparatus can be produced at low cost, according to the invention it is proposed that the sensor apparatus has the 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. The invention also proposes a floor cleaning appliance having a sensor apparatus of this type.
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Citations
12 Claims
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1. Sensor apparatus for enabling a self-propelled floor cleaning appliance to detect a down step, comprising:
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first and second transmission units and a reception unit for infrared radiation; and evaluation electronics for evaluating an intensity of radiation received by the reception unit from the transmission units, wherein; the second transmission unit is disposed at a distance from a connecting straight line running through the reception unit and the first transmission unit, and the first and second transmission units focus the infrared radiation into a common focal point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9)
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8. Sensor apparatus, for enabling a self-propelled floor cleaning appliance to detect a down step, comprising:
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first and second transmission units and a reception unit for infrared radiation; and evaluation electronics for evaluating an intensity of radiation received by the reception unit from the transmission units, wherein; the second transmission unit is disposed at a distance from a connecting straight line running through the reception unit and the first transmission unit, and an optical element for blocking out background radiation is associated with the reception unit.
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10. Self-propelled and self-steering floor cleaning appliance having a chassis and an electrical drive unit with electrical control electronics and two drive wheels mounted on the chassis, wherein the floor cleaning appliance comprises a sensor apparatus being disposed in front of and behind each drive wheel, based on a main direction of movement of the floor cleaning appliance, and coupled to the control electronics for enabling the appliance to detect a down step, the sensor apparatus comprising:
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first and second transmission units and a reception unit for infrared radiation; and evaluation electronics for evaluating an intensity of radiation received by the reception unit from the transmission units, the second transmission unit being disposed at a distance from a connecting straight line running through the reception unit and the first transmission unit, wherein infrared radiation which is emitted from the transmission units is directed onto a floor surface that is to be cleaned. - View Dependent Claims (11, 12)
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Specification