| 摘要 |
The invention relates to a device for detecting flames by means of detectors, with subsequent evaluation devices for evaluation of the detector signals, in which at least two identical detectors (1, 2, 3) are disposed next to one another, and each detector (1, 2, 3) is provided with an identical signal processing (amplifier, A/D converter) and a symmetrical and similar layout (conductor track placement), whereby each of the detectors (1, 2, 3) covers a different wavelength range (16, 17, 18), by way of a preceding filter, and the signal detection takes place at the same time and synchronously, so that a precise analysis of the received radiation (12) is made possible by means of simple algorithms, independent of disruptive influence variables, and a method for detecting flames. By means of the use of the same detectors and the same signal processing systems, as well as the symmetrical and similar configuration of the conductor track placement, the layout, as well as by means of the synchronous control of the signal recording, it is ensured that interference variables such as electromagnetic radiation, for example, occur uniformly on all optical reception channels. This uniform interference can be compensated very quickly and efficiently, without complicated algorithms, so that the result of the detection is not distorted by influence variables such as ambient temperature, interference radiation and viewing angle being distorted, and a simple and energy-saving signal evaluation takes place and short reaction times for flame detection can be achieved.
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