According to one embodiment, a fixing device includes a fixing member, a temperature sensor unit, a heater unit, and a controller. The fixing member has a surface that contacts a sheet. The temperature sensor unit is configured to measure a temperature of the surface of the fixing member. The heater unit is configured to heat the member when turned ON. The controller is configured to output a notification indicating an abnormality in the temperature measurement by the temperature sensor unit if an ON time of the heater unit during an operation period for controlling the fixing member to be at a target temperature, as measured by the temperature sensor unit, is longer than a predetermined threshold time.

A light source comprises at least one light-emitting component, in particular a component emitting ultraviolet light and/or a semiconductor component, and a line system, through which a cooling fluid can flow in a flow direction, for controlling the temperature of the at least one light-emitting component, and also a first and a second cooling-fluid pressure sensor, which are arranged one after the other in the line system in the flow direction, and an electronics unit which is connected to the first and second cooling-fluid pressure sensors and configured to determine at least one diagnostic, control and/or regulating value on the basis of pressures captured by the first cooling-fluid pressure sensor and by the second cooling-fluid pressure sensor.

A light source comprises at least one light-emitting component, in particular a component emitting ultraviolet light and/or a semiconductor component, and a line system, through which a cooling fluid can flow in a flow direction, for controlling the temperature of the at least one light-emitting component, and also a first and a second cooling-fluid pressure sensor, which are arranged one after the other in the line system in the flow direction, and an electronics unit which is connected to the first and second cooling-fluid pressure sensors and configured to determine at least one diagnostic, control and/or regulating value on the basis of pressures captured by the first cooling-fluid pressure sensor and by the second cooling-fluid pressure sensor.

A system, method, and assembly for controlling a power supply for at least one ultraviolet lamp where at least one ultraviolet lamp uses input received from at least one sensor of at least one ultraviolet lamp to measure a characteristic of the at least one ultraviolet lamp and, if based on that at least one sensor, the at least one ultraviolet lamp determines that at least one characteristic of a power supply operatively coupled to the at least one ultraviolet lamp should be changed, generates a command for that power supply to modify that at least one characteristic either by modulating its output or adjusting an output level.

Systems, methods, apparatus, and machine-readable media are provided to facilitate lighting device health management. Conditions of at least a portion of an electric light assembly may be monitored with a monitor adapted to be disposed in the electric light assembly. The electric light assembly may include an electric light source and a receptacle adapted to receive the electric light source. Based on the monitoring, data recordings corresponding to operations of the electric light assembly over a period of time may be stored. Reporting data may be created based on the stored data recordings. A communication may be wirelessly transmitted with the monitor toward a system controller that is remote from the electric light assembly. The communication may include the reporting data. The monitor may correspond to the electric light source or a receptacle adapted to receive the electric light source.

Systems, methods, apparatus, and machine-readable media are provided to facilitate lighting device health management. Conditions of at least a portion of an electric light assembly may be monitored with a monitor adapted to be disposed in the electric light assembly. The electric light assembly may include an electric light source and a receptacle adapted to receive the electric light source. Based on the monitoring, data recordings corresponding to operations of the electric light assembly over a period of time may be stored. Reporting data may be created based on the stored data recordings. A communication may be wirelessly transmitted with the monitor toward a system controller that is remote from the electric light assembly. The communication may include the reporting data. The monitor may correspond to the electric light source or a receptacle adapted to receive the electric light source.

Provided are an open-mode protection device and an electronic device having the same. An open-mode protection device according to an embodiment of the present invention is connected in parallel to each of a constant current source and a load configured with a light emitting diode (LED). The open-mode protection device comprises a first external electrode connected to one sides of the constant current source and the load; a second external electrode connected to the other sides of the constant current source and the load, and a ground; a protection unit configured to bypass, to the ground through the second external electrode, an overvoltage or an overcurrent flowing into the first external electrode; and a current suppressing unit connected in series to the protection unit and configured to sense a temperature or current of the protection unit and reduce the current of the protection unit as the temperature or current increases.

A lighting system (100; 120) comprises at least one lamp (10) and a processing unit (20) for estimating an end-of-life of the at least one lamp (10). The processing unit (20) is configured to receive a lamp burning time during which the at least one lamp is turned on and a forecasted temperature over a selected period of time at a location of the at least one lamp. The processing unit (20) is configured to estimate the end of life of the at least one lamp based on the lamp burning time and the forecasted temperature. By using the forecasted temperature, use of dedicated lamp sensors measuring internal parameters of the lamp usable for the end-of-life estimate may be avoided and the estimate may be simplified.

A technology advantageous for observing an observation target in a state where the observation target is irradiated with light emitted under an appropriate temperature condition in a light source device is provided. A control device includes a temperature information acquisition unit that acquires light source temperature information that is information regarding a temperature of a light source device that emits light with which biological tissues are to be irradiated, and a control unit that controls a notification on the basis of the light source temperature information.

A technology advantageous for observing an observation target in a state where the observation target is irradiated with light emitted under an appropriate temperature condition in a light source device is provided. A control device includes a temperature information acquisition unit that acquires light source temperature information that is information regarding a temperature of a light source device that emits light with which biological tissues are to be irradiated, and a control unit that controls a notification on the basis of the light source temperature information.