AN4038 datasheet(31/39 Pages) STMICROELECTRONICS

поискавой системы для электроныых деталей

AN4038 датащи(PDF) 31 Page - STMicroelectronics

номер детали	AN4038

подробное описание детали	Guidelines to optimize proximity detection with STM8TL5xxx capacitive sensors

PDF	39 Pages

Scroll/Zoom	100%

производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

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31 / 39 page

AN4038

Front Panel

Doc ID 022686 Rev 1

31/39

Figure 30 shows a comparison of the distance between a hand and the sensor and a hand

and the front panel. This test was performed with an acrylic front panel material.

Figure 30.

Detection distance versus front panel thickness

Note:

Measurements performed with sensor board #3 (see Figure 1).

The thicker the front panel is, the greater the total detection distance is between the hand

and the electrode, but the distance between the hand and the front panel decreases.

An electrode with a thin front panel glued onto it compared to an electrode without a front

panel does not significantly influence detection range. The front panel only increases the

projected capacitance.

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