Patent ID: 7315002

Claim:
A device for detecting the position and the weight of a person, comprising: at least one transceiver for electromagnetic signals; at least one sensor reflector disposed to enable detection of a presence and a position of the person, said sensor reflector having an antenna for reflecting a transmitting signal from said transceiver as a sensor reflector signal; a weight-dependent changeable electrical load device associated with said sensor reflector and disposed to detect weight information about the person; said antenna of said sensor reflector being linked to said electrical load device and configured to superimpose on the sensor reflector signal of said sensor reflector weight information about the person detected by said load device; an evaluation unit connected to said transceiver and being configured to evaluate the weight information of the person; and said at least one sensor reflector having an oscillator configured to oscillate at a weight-dependent oscillating frequency, thereby changing the load depending on the weight acting thereon.