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The key to the resistance of three-beam active infrared detector
In general, ordinary detectors have a wired connection to be installed indoors, but how do you make many TV, lighting and other routes do not affect the normal work of the three-beam active infrared detectors? At this point, we have to make comparisons. Ordinary detectors are generally four-wire. According to the relevant requirements of the project and the results of strong and weak currents, we do not share the same results during installation. Strong electric equipment or electric appliances that generate magnetic fields are installed together. With the development of the security industry, an open business model is being expanded. Therefore, a self-preserving three-beam active infrared detector can better protect others.
The three-beam active infrared detector is not particularly advantageous because infrared technology is not particularly advantageous. Therefore, when the three-beam active infrared detector performs perimeter defense, there will be a certain amount of error between the measured distance and the nominal distance. The standard of general manufacturers is the most The working distance under good weather conditions is generally very difficult to meet such requirements. In actual use requirements, we must install 50 to 70 percent of the manufacturer's nominal distance. The actual measurement of the three-beam active infrared detector is the most critical.
The last point to mention is how to adjust the relative sensitivity of the three-beam active infrared detector so that the false alarm rate and false negative rate achieve the most ideal results? Three-beam active infrared detectors are generally designed to respond to harsh environments, we must set the low-sensitivity file, and three-beam active infrared detectors need to select the appropriate response time to adjust, usually to 10m / s speed to adjust the correlation.
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