Siemens Aktiengesellschaft

Siemens Aktiengellschaft

Arnd Stielow

Klaus Hofbeck

Birgit Rösel

Thomas Klement

Mario Haselsteiner

Roland Wagner

Michael Stippler

Lorenz Pfau

A single high-frequency transmitter emits radiation in a vehicle () comprising several seats (), said high-frequency radiation being reflected depending on whether a seat is occupied, transmitted to a receiver and evaluated with regard to the radiation intensity. In addition, the reliability of the identification is increased, even when the occupant is out of position, by the provision of at least one reflector () per seat in or on an allocated seat-belt ().

System and method for identifying seat occupancy in a vehicle

A classifying seat occupancy detection device is used to classify whether a particular seat is occupied by an adult, an infant or not at all. Depending on the classification the door lock assigned to the seat is automatically switched either to a childproof mode or to a non-childproof mode, without the vehicle driver having to do anything.

Locking system for a motor vehicle and method for controlling such a locking system

Disclosed is a device comprising a transceiver () which transmits HF signals that are reflected back by means of reflectors () located in the seats. Diagnostic reflectors () are disposed at the edge of the seats in order to diagnose the reflectors (). Said diagnostic reflectors () are disposed such that the diagnostic reflectors are normally not covered up by a person () sitting on a seat (). The diagnosis is carried out at the same time as the person is identified.

Device and method for detecting the position of a person on a seat of a motor vehicle

In a method for self-diagnosis of a system for seat occupancy detection, in particular for self-diagnosis of a HOBBIT system, a self-diagnosis signal that has been modulated in a predetermined manner is transmitted by the transmit unit to the receive unit of the base station and analyzed, preferably with the reflectors deactivated. From the analysis it is possible to make deductions about the operational integrity of the base station.

Method for self-diagnosis of a system

The position and the weight of a person, in particular a person on a motor vehicle seat, is determined. Reflectors are used to reflect electromagnetic radiation from a transceiver. The attenuation of the sensor reflector radiation enables a report on the seat position of a person in the radiation path. An antenna of each sensor reflector is connected to an electrical load assigned thereto, which is dependent on the weight of the person acting upon it. Depending on this weight, weight information about the person is superimposed by the load onto the reflected sensor reflector signal. The reflected sensor reflector signal is received by the transceiver and fed to the evaluation unit after a signal pre-processing, which enables the weight information of the person to be evaluated.

Devices and method for detecting the position and the weight of a person

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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Wuppertal, Germany

Arnd Stielow