摘要:
A usage time correcting engine, and corresponding method, system, apparatus, and computer product are provided. Over a period of time that an LED lighting fixture is being used to provide light, a usage time correcting engine indirectly measures an internal temperature of a component of the fixture. The indirect measurement is based on a measured external temperature of the component and power output supplied to or provided by the component. The usage time correcting engine determines a multiplier as a function of the indirectly measured internal temperature. The usage time correcting engine multiplies the period of time by the multiplier to provide a corrected measurement of usage of the component. In some examples, the usage time correcting engine determines a remaining lifetime of the LED lighting fixture from the corrected measurement and then reports the remaining lifetime to a user by way of a log, flashing light or other notification/indication.
摘要:
A light emitting diode (LED) lighting unit including power supply housing accommodating a power supply and an LED array housing defining an internal compartment and a lens sealing the internal compartment. An LED array and an LED control circuit are mounted on a printed circuit board, which is accommodated within the compartment. The rear surface of the LED array housing includes a heat transfer element. At least one of the LED array and power supply housings has a chimney extending therethrough from a front to rear surface. The rear surface of the LED array housing is spaced from the front surface of the power supply housing to define and airflow space therebetween. During operation of the LED lighting unit, air flows into the airflow space and toward a central axis of the LED lighting unit before flowing out through the chimney to facilitate removing heat from the LED lighting unit.
摘要:
A system and process for controlling power delivered to an electrical load, such as lighting system, to controllably effect operation of the load (e.g., intensity of illumination). In at least some embodiments, the system and process interpret a user-adjustable setting of a typical electronic low voltage (ELV) dimmer control device that is otherwise isolated from facility AC power. An electrical stimulus, such as a relatively low power AC or DC voltage, is applied at one or more externally accessible terminals of the ELV dimmer control. An electrical response of the dimmer control to the stimulus is measured at one or more externally accessible terminals of the dimmer control. The electrical response varies according to the applied electrical stimulus and a user-adjustable setting of the dimmer control. An indication of the setting of the user-adjustable control is determined from the measured electrical response, and used to correspondingly dim a lighting source.
摘要:
Methods for manufacturing a light source circuit board having one or more light emitting components that include providing at least one circuit component on a light source circuit board, wherein the at least one circuit component has an electrical circuit constant that specifies one or more performance parameters for the light source. The methods also include measuring the electrical circuit constant of the at least one circuit component. The methods also include identifying one or more performance parameters for the light source based on the measured electrical constant.
摘要:
A light emitting diode (LED) lighting unit including power supply housing accommodating a power supply and an LED array housing defining an internal compartment and a lens sealing the internal compartment. A different respective LED array is mounted on at least one of a number of common printed circuit boards accommodated within the internal compartment. The different LED arrays provide different illumination, controlling one or more illumination features such as beamwidth, color and color temperature. Physical isolation is also provided between the LED array housing and the power supply housing to allow for controlled or otherwise restricted access to one or more of the different housings. In at least some embodiments, one or more of the LED array housing and power supply housing are configured with a centrally located chimney, drawing in cooling air from a space provided between the to housings to facilitate cooling of the lighting unit.
摘要:
A device for controlling levels of light output by a solid state lighting load at low dimming levels includes a bleed circuit connected in parallel with the solid state lighting load. The bleed circuit includes a resistor and a transistor connected in series, the transistor being configured to turn on and off in accordance with a duty cycle of a digital control signal when a dimming level set by a dimmer is less than a predetermined first threshold, decreasing an effective resistance of the bleed circuit as the dimming level decreases.
摘要:
A powerline communication control system for controlling a lighting unit, such as an LED lighting unit, including a master controller for receiving lighting unit control inputs from a lighting controller and generating corresponding lighting unit command outputs in a lighting system command format and transmission mode and superimposing the lighting unit command outputs onto the power distribution system and at least one lighting slave unit for receiving the lighting command signal, separating the lighting command signal from the power signal and for providing lighting unit control commands to the at least one lighting unit to control illumination thereof.
摘要:
In some examples, wireless light controller technology includes methods and apparatuses. In other examples, the technology includes one or more lights on a power line. Each light of the one or more lights is individually controllable via power line communication over the power line. The technology further includes a wireless device configured to transmit wireless communication. The wireless communication includes instructions to control the one or more lights. The technology further includes a wireless light controller configured to receive the wireless communication and transmit the instructions to control the one or more lights over the power line communication to the one or more lights.
摘要:
The present invention provides methods of producing animals that have higher than average carcass quality, higher than average feed conversion efficiency, higher than average growth rate, lower than average voluntary feed intake and/or higher than average reproductive capacity.
摘要:
A control for interior environmental energy system comprising a portable thermostat comprising a temperature indicator, an electromagnetic pulse transmitter and means to trigger the pulse transmitter with a coded "on" and a coded "off" pulse in response to the temperature in the room where the thermostat is located, an actuator unit in communication with the energy unit that contains means for receiving said energy pulses and relaying them to the energy system and that is latched into a stabilized on or off position through repeated receipt of the specific codes and a fail safe system that either closes down the control or transfers control to conventional built-in controller upon failure to receive coded pulses over a specific time period.