| 摘要 |
<p>An alarm chip (10) and the use of the alarm chip (10) for giving warning of burglary or undesired entry into buildings, installations or structures, preferably by so-called shell-protection of the buildings, installation or structure, the alarm chip (10) detecting, by means of an associated accelerometer, motions/vibrations in the object to which the alarm chip (10) is fixedly arranged, the object being formed of e.g. a window (2), a door, possibly a frame or casing connected to the window (2) or door, wherein the motions/vibrations are converted by means of the accelerometer into an outgoing flow of acceleration values, which are further processed, by means of a processor in a signal processing circuit, in which, by means of algotithms, the acceleration values are recognised and separated into either output alarm signals or output non-alarm signals, and in which output signals may be coded/encrypted, so that each alarm chip (10) has i.a. a unque address and identity, and in which the signals are possibly also output in the form of signal pulses, preferably in a so-called pseudo-random order, the output signals being transmitted, preferably in a wireless maner, to at least one central and/or external alarm unit/alarm system arranged to the building, installation or structure.</p> |
