| 摘要 |
This system has three sensors for IR and uses a comparator and AND gate. Three infrared detectors are arranged to respectively detect radiation at three wavelengths. Two comparators are operatively connected to the detectors. The first provides an output when the first detector output is greater than that of the second detector. The second comparator outputs when the third detector output is greater than the second. An AND gate, connected to the comparator outputs, provides an ouptut when the comparators provide an output.
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