公开(公告)号：US06587047B2

公开(公告)日：2003-07-01

申请号：US09683657

申请日：2002-01-30

申请人： Stefan Nilsson ,  Göran Svedoff

发明人： Stefan Nilsson ,  Göran Svedoff

IPC分类号： G08B1318

CPC分类号： G01S7/527 ,  B60R25/1009 ,  G01S7/524 ,  G01S15/523

摘要： An intrusion detector having a transmitter, receiver, detector, signal processor, and control unit is disclosed. The transmitter is able to transmit waves into a defined space and has a variable output power. The receiver is able to receive those waves after reflection. The detector is connected to the receiver and able to detect a signal based on a change in the waves after reflection, where the detected signal is representative of any motion in the defined space. The signal processor is able to process the detected signal in order to determine if an intrusion has occurred. The control unit is able to determine any change in the detected signal, and to increase the output power of the transmitter in response to such change. A method for performing such intrusion detection is also disclosed.

公开(公告)号：US07907082B2

公开(公告)日：2011-03-15

申请号：US12253494

申请日：2008-10-17

申请人： Anders Antonsson ,  Göran Svedoff

发明人： Anders Antonsson ,  Göran Svedoff

IPC分类号： G01S13/00

CPC分类号： G01S7/285 ,  G01S7/282 ,  G01S7/2921 ,  G01S13/14 ,  G01S13/18 ,  G01S13/56

摘要： A method and system for presence detection within a detection volume delimited by an inner radius and an outer radius using microwave radiation. The outer radius of the detection volume is controlled by selecting the length of a first pulse controlling the transmit interval of a microwave transmitter and by selecting the length of a third pulse controlling the receive interval of a microwave receiver. The inner radius of the detection volume is controlled through selecting the length of a second pulse defining a predetermined time period between the first pulse and the third pulse.

摘要翻译： 用于使用微波辐射由内半径和外半径界定的检测体内存在检测的方法和系统。 通过选择控制微波发射器的发射间隔的第一脉冲的长度并通过选择控制微波接收器的接收间隔的第三脉冲的长度来控制检测音量的外半径。 通过选择限定第一脉冲和第三脉冲之间的预定时间段的第二脉冲的长度来控制检测体积的内半径。