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Method for controlling serviceability of a keyboard. RU patent 2269815.

FIELD: electric engineering, in particular, technology for controlling serviceability of controlling and commutating elements of electric circuits, possible use for controlling state of panels for controlling electro-mechanical devices in form of separate keys or switches, and also key-based information input devices in form of keyboards.

SUBSTANCE: method includes forming a series of testing pulses of current with given amplitude and length, sent to each piezoelectric element of key, value of resulting voltage component variable in stabilized state is measured, result of measurement is compared to given maximal and minimal boundary values.

EFFECT: possible detection in real time scale of breakdowns in form of dents or destruction of piezoelectric element crystal, violation of integrity of contact connections and conductors, both before and during process of information accumulation; increased reliability of keyboard.

IPC classes for russian patent Method for controlling serviceability of a keyboard. RU patent 2269815. (RU 2269815):

G06F3/023 -

G06F11/30 - Monitoring

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