In one implementation, a system for controlling defrost of a chilled environment includes a camera configured to capture images of one or more objects located in the chilled environment and a defrost control unit. The defrost control unit is configured to: receive an image of the one or more objects from the camera, analyze the image of the one or more objects to quantify an amount of frost formation on the one or more objects, determine when to initiate a defrost cycle in the chilled environment based on the amount of frost formation on the one or more objects, and in response to determining to initiate the defrost cycle, initiating the defrost cycle by sending a defrost control signal to a defroster. The defroster is configured to perform the defrost cycle within the chilled environment in response to receiving the defrost control signal.

In one implementation, a system for controlling defrost of a chilled environment includes a camera configured to capture images of one or more objects located in the chilled environment and a defrost control unit. The defrost control unit is configured to: receive an image of the one or more objects from the camera, analyze the image of the one or more objects to quantify an amount of frost formation on the one or more objects, determine when to initiate a defrost cycle in the chilled environment based on the amount of frost formation on the one or more objects, and in response to determining to initiate the defrost cycle, initiating the defrost cycle by sending a defrost control signal to a defroster. The defroster is configured to perform the defrost cycle within the chilled environment in response to receiving the defrost control signal.

An optical pyrometer having a coaxial light guide delivers laser radiation through optics to heat a localized area on a sample, and simultaneously collects optical radiation from the sample to perform temperature measurement of the heated area. Inner and outer light guides can comprise the core and inner cladding, respectively, of a double-clad fiber (DCF), or can be formed using a combination of optical fibers in one or more coaxial bundles. Coaxial construction and shared optics facilitate alignment of the centers of the heated and observed areas on the sample. The heated area can be on the order of micrometers when using a single-mode optical fiber core as the inner light guide. The system can be configured to heat small samples within a vacuum system of charged-particle beam microscopes such as electron microscopes. A method for using the invention in a microscope is also provided.

A temperature measuring system is disclosed herein. The temperature measuring system includes an optical assembly and a spectral data receiver. The temperature measuring system views passing gas and measures the radiant response of a selected gas. The measurement includes radiant intensities with respect to wavelengths in the infrared region.

Described herein are a spectrometer system and a spectrometer device, which are suited for investigation or monitoring purposes, in particular, in the infrared (IR) spectral region, and for a detection of heat, flames, fire, or smoke. The spectrometer device allows capturing incident light from object and transferring the incident light to a length variable filter with a particularly high concentration efficiency. Apart from the spectrometer device, the spectrometer system further includes an evaluation unit designated for determining information related to a spectrum of an object by evaluating the detector signals provided by the spectrometer device.

The present disclosure relates to a circuit breaker opening/closing assistance apparatus for correcting a thermal image of a circuit breaker on the basis of a visible image of the circuit breaker, and assisting an opening/closing operation of the relevant circuit breaker on the basis of a temperature identified through the corrected thermal image. Further, the present disclosure relates to a circuit breaker opening/closing assistance apparatus for identifying a temperature of a circuit breaker in which a failure has occurred, on the basis of a thermal image of the circuit breaker, and assisting an opening/closing operation of the relevant circuit breaker on the basis of the identified temperature.

A photonic device has a substrate with one or more optical resonators having a first resonant frequency response relative to temperature and a different second resonant frequency response relative to temperature. A first waveguide optically couples a first light beam having a first frequency to a first optical resonator and a second waveguide optically couples a second light beam having a second frequency to a second optical resonator. An optical shifter may shift an optical characteristic of the second light beam. A detector converts output light from the photonic device into an electric signal having a characteristic indicative of a physical condition, such as temperature, of the photonic device. In some cases, output light from the one or more optical resonators is combined and a temperature of the photonic device is determined from a beat frequency in the combined light. One or more multimode optical resonators may be used.

A photonic device has a substrate with one or more optical resonators having a first resonant frequency response relative to temperature and a different second resonant frequency response relative to temperature. A first waveguide optically couples a first light beam having a first frequency to a first optical resonator and a second waveguide optically couples a second light beam having a second frequency to a second optical resonator. An optical shifter may shift an optical characteristic of the second light beam. A detector converts output light from the photonic device into an electric signal having a characteristic indicative of a physical condition, such as temperature, of the photonic device. In some cases, output light from the one or more optical resonators is combined and a temperature of the photonic device is determined from a beat frequency in the combined light. One or more multimode optical resonators may be used.

A system simulates hyperspectral imaging data or multispectral imaging data for a simulated sensor. Blackbody radiance of real-world thermal imagery data is computed using a Planck function, which generates a simulated spectral hypercube. Spectral emissivity data for background materials are multiplied by a per-pixel weighting function, which generates weighted spectral emissivity data. The simulated spectral hypercube is multiplied by the weighted spectral emissivity data, which generates background data in the simulated spectral hypercube. Simulated targets are inserted the background data using the Planck function. The simulated spectral hypercube is modified, and then it is used to estimate a mission measure of effectiveness of the simulated sensor.

A system for monitoring brick in a rotary kiln includes an infrared sensor and a computing system configured to: obtain a digital model of a brick layer of a rotary kiln having a plurality of bricks, wherein the digital model of the brick layer is based on a measured brick thickness correlated with a measured infrared temperature for each brick; obtain infrared data of the rotary kiln with the at least one infrared imaging sensor; determine the measured infrared temperature for each brick; determine a brick thickness of a first brick in the brick layer of the rotary kiln based on the measured infrared temperature assigned to the first brick with the digital model of the brick layer; and provide the brick thickness of the first brick in a brick thickness report.