| 摘要 |
The present invention relates to a procedure and a device for determination of the temperature of an object by measurement of electromagnetic radiation emitted by this object. A portion of the radiation emitted by the object of measurement is transmitted by a transmission device to a wavelength dividing device. The wavelength dividing device causes a portion of the spectrum of the radiation corresponding to the spectral sensitivity range of the detector or pair of detectors to be distributed across the radiation-sensitive surface of the detector or pair of detectors. The detector senses the position of the center of gravity of the illuminated spectrum which is converted by the signal processing unit to temperature information, and displayed by an output device. Using a sole position-sensitive detector, the relative magnitude of two currents I1 and I2 indicates the position of the center of gravity. When two detectors are used, it is practicable to allow the detector which senses the short-wave portion of the spectrum to be a silicon detector whereas the second detector should be a germanium detector which gives a decreasing sensitivity through the use of a larger portion of the spectrum. By sensing the position of the center of gravity of the spectrum which corresponds to the temperature instead of its peak value, the risk of sensing of false peaks is eliminated. |
