Siemens Aktiengesellschaft

Mario Haselsteiner

Klaus Hofbeck

Birgit Rösel

Arnd Stielow

Thomas Klement

Taking as a starting point known security apparatuses and their methods for distance-dependent initiation of functions in or at an object, the reliability of distance measurements is essentially increased by carrying out a series of distance measurements, an associated quality value (G) being calculated by a mathematical function in each case for the measuring results (M&#x2013;M, R, R) of said distance measurements. Only those measured values which fall below a certain quality value (Krit) as a threshold value are generally accepted for an analysis in respect of initiating a distance-related function. Developments provide for selecting measured values beforehand with reference to a level measurement, in order to further increase the reliability, or applying methods of statistical analysis subsequently.

Method and security apparatus for validating an authorization for locking and unlocking and/or using an object

An antitheft protection system for a vehicle () comprises at least one transmitting and receiving unit () connected to the vehicle (), at least one code transmitter (), which can communicate with the at least one transmitting and receiving unit (), and at least one base unit (), which wirelessly communicates with the at least one transmitting and receiving unit ().

Antitheft protection system, method for operating an antitheft protection system and components of an antitheft protection system

A method for determining the position of at least one second transmitting and receiving device () in respect of a first transmitting and receiving device in a passive access control system operating in the GHz range, comprising the steps of using a radar method, wherein signals (f, f) are received in the first transmitting and receiving device on the left-hand side and right-hand side of a modulation frequency (f), determining the distance of two signals (f, f) closest to the left-hand side and right-hand side modulation frequency (f) wherein the distance is proportional to the distance between the first transmitting and receiving device and at least one second transmitting and receiving device (), so that multipath propagations are not taken into consideration.

METHOD AND DEVICE FOR DETERMINING THE POSITION OF AT LEAST ONE SECOND TRANSMITTING AND RECEIVING DEVICE IN RESPECT OF A FIRST TRANSMITTING AND RECEIVING DEVICE IN A PASSIVE ACCESS CONTROL SYSTEM OPERATING IN THE GHZ RANGE

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Haibühl, Germany

Mario Haselsteiner