Non-contact operator presence sensor
First Claim
1. A skid steer loader, comprising:
- a frame;
a plurality of power actuators operably coupled to the frame;
a power circuit coupled to the power actuators and providing power to the power actuators;
a cab operably coupled to the frame and defining an operator compartment, the cab including a seat supported in the operator compartment;
a non-contact operator presence sensor coupled proximate the cab and configured to sense presence of an occupant in a predefined volume proximate the seat and to provide a first sensor output signal indicative of operator presence, the operator presence sensor including a radiation source and a plurality of detectors, each detector arranged to detect radiation from one of a plurality of detected volumes proximate the seat and to provide a detector output signal indicative of whether an object is in a corresponding detected volume based on the radiation detected, the plurality of detectors configured such that at least two of the plurality of detected volumes overlap proximate the predefined volume; and
a controller coupled to the operator presence sensor and configured to control operation of at least one of the plurality of power actuators based on the first sensor output signal.
3 Assignments
0 Petitions
Accused Products
Abstract
A power machine includes a frame and a plurality of power actuators operable coupled to the frame. A power circuit is coupled to the power actuators and provides power to the power actuators. A cab is operably coupled to the frame and defines an operator compartment. The cab includes a seat supported in the operator compartment. A non-contact operator presence sensor is coupled proximate the cab and is configured to sense presence of an occupant in a predefined volume proximate the seat. The operator presence sensor provides a sensor output signal indicative of operator presence. A controller is coupled to the operator presence sensor and is configured to control operation of at least one of the plurality of power actuators based on the sensor output signal.
108 Citations
19 Claims
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1. A skid steer loader, comprising:
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a frame; a plurality of power actuators operably coupled to the frame; a power circuit coupled to the power actuators and providing power to the power actuators; a cab operably coupled to the frame and defining an operator compartment, the cab including a seat supported in the operator compartment; a non-contact operator presence sensor coupled proximate the cab and configured to sense presence of an occupant in a predefined volume proximate the seat and to provide a first sensor output signal indicative of operator presence, the operator presence sensor including a radiation source and a plurality of detectors, each detector arranged to detect radiation from one of a plurality of detected volumes proximate the seat and to provide a detector output signal indicative of whether an object is in a corresponding detected volume based on the radiation detected, the plurality of detectors configured such that at least two of the plurality of detected volumes overlap proximate the predefined volume; and a controller coupled to the operator presence sensor and configured to control operation of at least one of the plurality of power actuators based on the first sensor output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A power machine, comprising:
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a frame; a plurality of power actuators operably coupled to the frame; a power circuit coupled to the power actuators and providing power to the power actuators; a cab operably coupled to the frame and defining an operator compartment, the cab including a seat supported in the operator compartment; a non-contact operator presence sensor coupled proximate the cab and configured to sense presence of an occupant in a predefined volume proximate the seat and to provide a first sensor output signal indicative of operator presence, the operator presence sensor including a radiation source and a plurality of detectors, each detector arranged to detect radiation from one of a plurality of detected volumes proximate the seat and to provide a detector output signal indicative of whether an object is in a corresponding detected volume based on the radiation detected, the plurality of detectors configured such that at least two of the plurality of detected volumes overlap proximate the predefined volume; and a controller coupled to the operator presence sensor and configured to control operation of at least one of the plurality of power actuators based on the first sensor output signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification