Streetlight monitoring and control
First Claim
1. A controller for a streetlight comprising:
- a microcontroller;
a first sensor coupled with said microcontroller and operative to sense a light level from a lamp within said streetlight;
a second sensor coupled with said microcontroller and operative to sense a voltage level on a power line supplying power to said streetlight from an electrical distribution system;
a switching network coupled with said microcontroller and operative to adjust said light level of said lamp;
wherein said microcontroller is operative to facilitate an estimate of power consumption for said streetlight based on said light level and said voltage level.
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Accused Products
Abstract
Methods and apparatus associated with monitoring and controlling streetlights include monitoring light levels and voltage levels at corresponding streetlights and controlling the streetlights to set or maintain a particular light output at the respective streetlights or providing power consumption estimates for respective streetlights (streetlight specific metering) based on the voltage levels and light levels. A streetlight controller for a streetlight includes a microcontroller; a first sensor to sense a light level from a lamp within the streetlight; a second sensor operative to sense a voltage level on a power supply for the streetlight; and a switching network coupled with the microcontroller and operative to adjust the light level of the lamp. Methods includes monitoring a light level and voltage level and adjusting a light level, estimating power consumption, or facilitating maintenance in accordance with the light level and voltage level. The methods may be performed all or in part at a streetlight, a local gateway or a central controller and database.
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Citations
31 Claims
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1. A controller for a streetlight comprising:
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a microcontroller; a first sensor coupled with said microcontroller and operative to sense a light level from a lamp within said streetlight; a second sensor coupled with said microcontroller and operative to sense a voltage level on a power line supplying power to said streetlight from an electrical distribution system; a switching network coupled with said microcontroller and operative to adjust said light level of said lamp; wherein said microcontroller is operative to facilitate an estimate of power consumption for said streetlight based on said light level and said voltage level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A controller for a streetlight comprising:
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a microcontroller; a first sensor coupled with said microcontroller and operative to sense a light level from a lamp within said streetlight; a second sensor coupled with said microcontroller and operative to sense a voltage level on a power line supplying power to said streetlight from an electrical distribution system; a switching network coupled with said microcontroller and a streetlight ballast;
said switching network operative to adjust said light level of said lamp;wherein said microcontroller is operative to set said light level to a desired level based on an output of said first sensor and said second sensor by selectively adjusting said switching network; wherein the microcontroller maintains a data-log for the streetlight, the data-log comprising ON times and voltage levels sensed during the ON times, the data-log for facilitating an estimate of power consumption for the streetlight based on said light level and said voltage level. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method of monitoring a streetlight comprising:
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monitoring, in a system, a light level from a lamp within said streetlight with a light sensor; monitoring a voltage level of a power supply supplying said streetlight from an electrical distribution system; estimating the power consumption of said streetlight using a known nominal power consumption of said streetlight, said light level and said voltage level. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
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27. A method of monitoring a plurality of streetlights comprising:
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communicating with each of the plurality of streetlight, including; receiving a data-log from each streetlight, the data-log for each streetlight comprising one or more light levels and corresponding electrical distribution system voltage levels, and estimating a power consumption for each streetlight based on the one or more light levels and corresponding voltage levels. - View Dependent Claims (28, 29, 30, 31)
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Specification