Abstract:
A transparent ceramic rod for viewing combustion flame carries a ceramic tube at its inner end having higher fire resistance than that of the ceramic rod with the end of the rod recessed therein. The flame is observed from the other end of the rod by the observer.
Abstract:
A black body cavity radiometer is provided by a radiation receiving isothermal body having a short hollow cylinder with a hollow cone at one end. The cylinder is spun down at the other end to a smaller hollow cylinder of short length to form a radiation cavity having an aperture. A thermal guard surrounds the cavity, except over the aperture. The annular wall of the guard around the short cylindrical extension of the cavity is provided with an internally blackened groove which functions as an annular radiation trap for radiation from the internal surface of the guard and the external surface of the cavity. Glass rods or fibers maintain a thin annular space between the guard and the cylindrical extension of the cavity. A guard temperature sensing coil is provided on a hollow cylinder disposed in space between the guard and the cavity. The hollow cylinder is thermally connected to the guard by a flange. A heating and temperature sensing coil is wound directly on the main cylindrical portion of the cavity. A voltage is applied across the latter coil in sufficient amplitude to maintain the temperature of the latter coil equal to the temperature of the guard sensing coil. The magnitude of that voltage is a measure of radiation into the cavity through the aperture thereof.
Abstract:
A method for determining the temperature of a strand comprises disposing the strand along a background radiator of known temperature. Receiving the strand using a spatially resolving thermal imaging sensor in front of the background radiator while the strand is being disposed along its longitudinal axis. Forming an integral across a measuring value area, the integral configured to detect a complete strand portion located in front of the background radiator of the thermal imaging sensor. deducing the temperature of the strand by comparing the formed integral with a reference value
Abstract:
Devices, systems, and techniques for monitoring the temperature of a device used to charge a rechargeable power source are disclosed. Implantable medical devices may include a rechargeable power source that can be transcutaneously charged. The temperature of an external charging device and/or an implantable medical device may be monitored to control the temperature exposure to patient tissue. In one example, a temperature sensor may sense a temperature of a portion of a device, wherein the portion is non-thermally coupled to the temperature sensor. A processor may then control charging of the rechargeable power source based on the sensed temperature.
Abstract:
A temperature measurement system includes a plurality of filaments. The plurality of filaments are configured to emit thermal radiation in a relatively broad and substantially continuous wavelength band at least partially representative of a temperature of the plurality of filaments. A first and second portion of the filaments has a differing first and a second diameter and/or emissivity, respectively. The system also includes a detector array configured to generate electrical signals at least partially representative of the thermal radiation received from the filaments. The system further includes a controller communicatively coupled to the detector array configured to transform the first electrical signals to a first temperature indication at least partially as a function of the first diameter and/or first emissivity and transform the second electrical signals to a second temperature indication at least partially as a function of the second diameter and/or emissivity.
Abstract:
The system may include a photonic optical sensor including a photonic crystal and an incident light source arranged so as to project light onto the photonic optical sensor, and such that the photonic optical sensor returns a portion of the light projected onto the photonic optical sensor as returned light. The system may further include a detector positioned with respect to the photonic optical sensor so as to detect the returned light. The detector produces a data output based on the returned light. Additionally, a processing unit receives and processes the data output.
Abstract:
A danger detector configured as a point detector includes an alarm housing with an alarm cover, a non-contact heat radiation sensor that is sensitive to heat radiation in the infrared range, and a treatment unit configured to determine and emit a temperature value derived from the detected heat radiation for the ambient temperature in the surroundings of the danger detector and/or an alarm, in the event that the currently determined temperature value exceeds a predetermined temperature comparison value. The heat radiation sensor is arranged in the alarm housing and is configured to optically detect the ambient temperature on the inner side of the alarm cover. The heat radiation sensor may be a thermopile designed as an SMD component.
Abstract:
A method for contactlessly determining the temperature of a moving object having an unknown degree of emission, especially a metal wire conveyed along its longitudinal axis, is described: The object is guided through at least one radiation source emitting thermal radiation, wherein the object is mostly or completely surrounded by the at least one radiation source. With at least one radiation detector, a spatially-resolved thermal radiation measurement is performed in a region through which the object passes when it is guided through the radiation source. The temperature of the moving object is determined on the basis of the spatially-resolved thermal radiation measurement. A corresponding device is also described.