PULSED-LASER BEAM DETECTOR WITH IMPROVED SUN AND TEMPERATURE COMPENSATION

摘要

The invention discloses the pulsed-laser beam detector with the improved sun and temperature compensation. The detector consists of plurality of the photo detectors 101, the ambient temperature sensor 105, the sun exposure filter and mirroring circuit 103, microcontroller unit 104 that comprises pre- stored values in the database and the algorithm - decision logic, the time base circuit 106 that feed microcontroller 104, the amplifier 102 with the adjustable gain, the threshold setting circuit 107, the peak detector circuit 108, the comparator circuit 109, and the noise cancellation circuit 110. The core of invention is the amplifier 102 with the gain adjustable in real time to predetermined values, and where said gain depends of the measured values from the detectors 101, and temperature sensor 105, that are pre-processed if necessary, and compared with the values already stored in the microcontroller unit 104 and subjected to the program logic stored in said microcontroller 104 that finally decide about the gain of the said amplifier 102. The invention prevents false triggering of the device and provides the gain of the signal that is close to the maximum possible gain and optimally separated from the noise induced by the optical and temperature sources.