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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AN4038 датащи(PDF) 37 Page - STMicroelectronics |
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AN4038 датащи(HTML) 37 Page - STMicroelectronics |
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37 / 39 page  AN4038 Conclusion Doc ID 022686 Rev 1 37/39 7.2 Influential parameters summary Table 9 summarizes the main parameters influencing detection distance and noise. In conclusion, many considerations need to be take into account including application constraints, environmental change, board design constraints, and power supply. Generally, the best thing to do is to develop a prototyping proximity board to fine-tune the different parameters of the application and come to a reliable solution in terms of sensitivity and stability. Table 9. influential parameters summary Parameter Detection distance Noise Minimum interval recommended Increasing CS capacitor -- ++ Increasing target reference +++ -- ≥300 Decreasing detection threshold ++ 0 ≥4 ∗ noise standard deviation Spacing between Tx and Rx electrode +++ -- ≥2 mm Increasing Tx/Rx length ++ ++ Increasing Tx/Rx width ++ ≥1.5 mm Decreasing distance between ground plane and sensor --- - Decreasing distance between ground surrounding and sensor --- - ≥2 mm(with air as dielectric) |
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