An arc-flash sensor may provide flexibilities for supporting both surface mounting and peek-through mounting on a panel (e.g., a wall panel or an electrical panel). The arc-flash sensor includes a translucent optical lens, a fiber-optic cable, and a skirt around the back side of the optical lens. The translucent optical lens diffuses the light produced in an arc flash to enhance the detectability of light signals picked by the fiber-optic cable. The fiber-optic cable enters parallel to the panel and perpendicular to principal axis of the optical lens. The parallel fiber-optic cable configuration reduces sensor installation space occupied and potential damage to the sensor. The skirt is used to prevent false tripping caused by unexpected events on the fiber-optic cable side such as camera flashes, lightning, sunlight, or the like.

An arc-flash sensor may provide flexibilities for supporting both surface mounting and peek-through mounting on a panel (e.g., a wall panel or an electrical panel). The arc-flash sensor includes a translucent optical lens, a fiber-optic cable, and a skirt around the back side of the optical lens. The translucent optical lens diffuses the light produced in an arc flash to enhance the detectability of light signals picked by the fiber-optic cable. The fiber-optic cable enters parallel to the panel and perpendicular to principal axis of the optical lens. The parallel fiber-optic cable configuration reduces sensor installation space occupied and potential damage to the sensor. The skirt is used to prevent false tripping caused by unexpected events on the fiber-optic cable side such as camera flashes, lightning, sunlight, or the like.

The present application discloses a monitoring device, an electrostatic chuck and a monitoring method. the monitoring device includes a box body, a monitoring circuit, and a signal processing circuit. A view window is provided on the box body. The signal processing circuit is configured to process a signal transmitted by the monitoring circuit.

Disclosed is a device for recognizing an arcing fault in incident light that includes a sensor for detecting absorption lines of the incident light, and an evaluation unit which generates an evaluation signal when characteristic absorption lines are detected.

An optical detector for a high-voltage cable accessory includes an optical fiber transmitting a radiation generated by an electrical discharge of the high-voltage cable accessory at a wavelength of the radiation generated by the electrical discharge. The optical detector detects the radiation at the wavelength of the radiation generated by the electrical discharge.

The present application discloses a monitoring device, an electrostatic chuck and a monitoring method. the monitoring device includes a box body, a monitoring circuit, and a signal processing circuit. A view window is provided on the box body. The signal processing circuit is configured to process a signal transmitted by the monitoring circuit.

Systems and methods are provided for measuring, assessing, predicting, improving and presenting the state of physical object and human core temperatures, using imaging devices, e.g., a thermal infrared camera, and/or intruders in a region of interest to an operator, such that little or no operator effort is required to install, use or receive reports from the system. The invention also includes, for example, means and methods for exploiting autonomous operation and configuration, placement at remote sites, enhancement of image resolution and estimation of range such that accuracy of results and autonomy of operation is enhanced.

The present disclosure relates to an optical fiber detection device for detecting a discharge fault of a high-voltage bushing, which includes an optical fiber sensing unit, an optical fiber delay unit, a photoelectric conversion unit, and a signal collecting and processing unit. The optical fiber sensing unit includes sensing optical fibers; the optical fiber delay unit includes delay optical fibers, a light source, and couplers; the photoelectric conversion unit includes a photodetector; the signal collecting and processing unit includes a high-pass filter. The delay optical fibers are connected to the couplers; an output end of the light source is connected to the light-splitting coupler; an input end of the photodetector is connected to the light-splitting coupler, and an output end of the photodetector is connected to the signal collecting and processing unit; and the light-combining coupler is connected to the sensing optical fibers.

A fault detection system for use with wire includes an outer housing and a detection component positioned within the housing. The detection component includes a plurality of emitters and a plurality of detectors positioned around an examination area through which a wire is traversed. Each adjacent pair of emitters is spaced no more than 30 degrees apart, and each of the plurality of detectors is positioned across the examination area from a corresponding emitter. Each of the emitters is configured to emit a signal that is measured by a corresponding detector, and the detection component is configured to detect one or more defects on a surface of the wire based upon changes in the signals measured by one or more of the plurality of detectors.

A method and a corresponding assembly for detecting corona discharges of a system of equipment includes a sensor assembly that is guided along the system by a vehicle, a first camera for detecting UV radiation is used with a daylight filter for blocking daylight for the sensor assembly, and images of the system are captured by the sensor assembly. The captured images of the camera are provided with a three-dimensional position using an analysis device. Possible corona discharges are detected in each individual image using the analysis device and are transferred into a single three-dimensional space using the respective three-dimensional position. A spatial statistic regarding the frequency of possible current discharges is generated using the analysis device, and the spatial statistic is used to detect actual corona discharges as occurring frequently and at a fixed location in contrast to random noise.