A method and system for automatically determining a utility light malfunction is provided. The method includes receiving, from a first hardware device, luminance data specifying current luminance levels associated with utility light apparatuses. Location data specifying a geographical location for each utility light apparatus is retrieved and the luminance data and location data are analyzed with respect to historical luminance data and historical location data associated with the utility light apparatuses. The analysis results in determining that a group of utility light apparatuses include first current luminance levels differing from previous luminance levels of the group. A list and associated map specifying a group of geographical locations associated with the group is generated. A control signal enabling control of a vehicle is transmitted to the vehicle and associated video data is retrieved via the vehicle during travel in accordance with the map.

A system of monitoring and/or maintaining remotely located autonomously powered lights, security systems, parking meters, and the like is operable to receive data signals from a number of the devices, and provide a comparison with other similar devices in the same geographic region to detect a default condition of a particular device, and/or assess whether the defect is environmental or particular to the specific device itself. The system includes memory for storing operating parameters and data, and outputs modified control commands to the devices in response to sensed performance, past performance and/or self-learning algorithms. The system operates to provide for the monitoring and/or control of individual device operating parameters on an individual or regional basis, over preset periods.

A device and a method for driving the supply of power to a plurality of light sources that is made up of a first group of light sources comprising at least one light source, which first group of light sources is connected in series with at least one second group of light sources comprising at least one light source. The device comprises a supply circuit to which the plurality of light sources is connected as a load. According to the inventive measures, it becomes possible to short at least one of the groups of light sources without causing high intensity transient current peaks in the light sources that are not shorted.

A street light management method includes: receiving from a server at predetermined intervals and updating at least one of information about a node that is at least one street light, information about a gateway that communicates with the node and the server, and information about a communication channel between the node and the gateway; displaying the node in a corresponding position on a digital map displayed on a screen using position information included in the information about the node and displaying the gateway in a corresponding position on the digital map using position information included in the information about the gateway; and displaying corresponding information in at least one of information display windows on the screen according to the received information or a user operation.

The present invention discloses a system and method for active power factor correction and current regulation in led circuit. The system (100) used in the LED driver circuit performs active PFC and current regulation through the dynamic input current wave shaping by limiting peak currents. The dynamic wave 5 shaping scheme is realized through hardware and firmware and is used to strike an optimal balance between current accuracy, Power factor, THD and peak inductor currents. The system (100) is versatile enough to improve PF and current accuracy in LED circuits and indimmers circuits.

A control system includes: a first human detector that detects the presence or absence of a human within a first detection range; a second human detector that has a second detection range that overlaps with the first detection range, and detects the presence or absence of a human within the second detection range; a determiner that has a plurality of determination modes for determining the presence or absence of a human; a transmitter that transmits a control signal to a control target based on a result of determination made by the determiner; and a load that receives the control signal and serves as the control target whose operation mode is switched according to the control signal. The determiner performs operation in a first determination mode for determining the presence or absence of a human based on at least a result of detection performed by the first human detector when the load is in a first operation mode, and performs operation in a second determination mode for determining the presence or absence of a human based on a result of detection performed by the second human detector when the load is in a second operation mode that is different from the first operation mode.

The present invention provides a system and method for automatic billing, managing, scheduling and power consumption controlling of charging process of electronic vehicle. The system is comprised of: street light poles which include: an electronic node, unique communication adapter and electronic socket for vehicles charging, a feeder pillar in the street comprising a concentrator for controlling and scheduling the power consumption of each street light pole in relation to charging process and a operation control center (OCC) for controlling and billing the power consumption of each street pole.

A backlight unit includes: a light source configured to emit light based on a driving current; and a backlight controller receiving a digital dimming signal that defines a length of an output period of the driving current from a pulse width modulator and configured to, when a duty ratio of the driving current is less than a reference duty ratio, modulates the duty ratio of the driving current so that the duty ratio of the driving current is equal to or greater than the reference duty ratio and decrease a duty ratio of the digital dimming signal.

A vehicle computer is disclosed that includes one or more processors and memory that stores instructions executable by the one or more processors. The computer may be programmed to: receive a light input from an array of photovoltaic cells carried by a vehicle; based on the light input, determine that an infrastructure lamp is in a degraded state or a failure state; and transmit a report to a backend system based on the determination.

A chained flashlight system includes: plural flashlights; plural lighting control devices that control lighting of the plural flashlights, respectively; a communication wire; and a traffic control device. The plural lighting control devices include receiving units, controlling units, activating units, and power supply units, respectively and are coupled to the traffic control device by the same communication wire. The traffic control device simultaneously sends an activating signal to the plural lighting control devices via the communication wire. The receiving units receive the activating signal. The controlling units activate the activating units on the basis of the time condition from the reception of the activating signal to the activation of the activating units, set for the flashlights, respectively. When the power supply units are turned ON in an activated state of the activating units, respectively, the flashlights are lit by a lighting signal from the traffic control device, respectively.