发明名称 |
Sicherungssystem |
摘要 |
A measuring or security system (1) for detecting the distance between an object (2) or a person (2) from a given point of reference, comprising a first transmitter/receiver device (10) enabling production of and wireless transmission of a control signal to a separate second transmitter/receiver device (30) and reception of an acknowledgement signal transmitted by the second transmitter/receiver device (30) on receiving control signal. Both transmitter/receiver devices (10,30) have a signal source (24,24,25,26) producing pulses as a control signal or an acknowledgement signal. Said pulses have a monotonously decreasing or increasing frequency during pulse duration or are made of overlapping pairs of like pulses. The other transmitter/receiver (10,30) has at least one dispersion filter (11) with a given frequency dependent signal transit time on its receive side so that received pulses can be time-compressed. Transit time is adapted to the modulation on transmit side in such a way that spectral signal components of the control or acknowledgement signal coincide substantially at dispersion filter output (11) as a result of varying frequency-dependent signal transit-times through said filter and appear thus with slight temporal imprecision.
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申请公布号 |
DE19646748(A1) |
申请公布日期 |
1998.05.20 |
申请号 |
DE19961046748 |
申请日期 |
1996.11.01 |
申请人 |
NANOTRON GESELLSCHAFT FUER MIKROTECHNIK MBH, 10589 BERLIN, DE |
发明人 |
KOSLAR, MANFRED, 10629 BERLIN, DE |
分类号 |
H04B1/69;G01S13/28;G01S13/76;G08B13/14;(IPC1-7):G08B13/22;G07C11/00 |
主分类号 |
H04B1/69 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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