Automatically adjust sensor sample rates and modes based on sensor feedback and system state
First Claim
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1. A device for control of path light illumination and motion detection systems, comprising:
- an ambient light sensor configured to detect an ambient light level in a first area monitored by the device;
a path light source; and
a processor communicatively coupled to the ambient light sensor and the path light source, the processor configured to;
determine an ambient light sensor sampling mode based on the ambient light level, the ambient light sensor sampling mode comprising a sampling integration time,determine an ambient light sensor sampling period based on the ambient light level and detected motion in a second area monitored by the device, andcontrol the path light source based on sensor data obtained at the ambient light sensor sampling mode and the ambient light sensor sampling period.
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Abstract
A path light control device that can include a processor and light source, and any combination of ambient light sensors (ALS), passive infrared (PIR) sensors, accelerometers and compass sensors, where the sensor sampling mode and sampling period may be dynamically determined to permit the ALS to accurately measure an ambient light without excessive operation. The accelerometer and compass sensor may be provided to determine device movement and orientation to avoid sensor operation when movement or orientation of the device indicates that the data of the sensor is not applicable for proper device control.
27 Citations
25 Claims
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1. A device for control of path light illumination and motion detection systems, comprising:
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an ambient light sensor configured to detect an ambient light level in a first area monitored by the device; a path light source; and a processor communicatively coupled to the ambient light sensor and the path light source, the processor configured to; determine an ambient light sensor sampling mode based on the ambient light level, the ambient light sensor sampling mode comprising a sampling integration time, determine an ambient light sensor sampling period based on the ambient light level and detected motion in a second area monitored by the device, and control the path light source based on sensor data obtained at the ambient light sensor sampling mode and the ambient light sensor sampling period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device for control of path light illumination and motion detection systems, comprising:
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an ambient light sensor configured to detect an ambient light level in a first area monitored by the device; and a processor configured to; determine, for the ambient light sensor, a sensor sampling mode based on the ambient light level, the sensor sampling mode comprising a sampling integration time, determine, for the ambient light sensor, a sensor sampling period based on the ambient light level and detected motion in a second area monitored by the device, control the ambient light sensor using the sensor sampling mode and the sensor sampling period, and control at least one path light source based on sensor data obtained at the sensor sampling mode and the sensor sampling period. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method for control of path light illumination and motion detection systems, comprising:
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detecting, by a sensor comprising an ambient light sensor, an ambient light level in a first area monitored by a device comprising the sensor; determining, for the ambient light sensor, a sensor sampling mode based on the ambient light level, the sensor sampling mode comprising a sampling integration time; determining, for the ambient light sensor, a sensor sampling period based on the ambient light level and detected motion in a second area monitored by the device; and controlling a path light source based on sensor data obtained at the sensor sampling mode and the sensor sampling period. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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Specification