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    • 6. 发明专利
    • Microwave receiver and microwave sensor system
    • MICROWAVE接收器和微波传感器系统
    • JP2009268074A
    • 2009-11-12
    • JP2009059909
    • 2009-03-12
    • Hitachi Kokusai Denki Engineering:Kk株式会社日立国際電気エンジニアリング
    • NISHISATO YOSHITERU
    • H04B1/16G01S7/03G01S7/285G01S13/56G01V3/12G08B13/16
    • G08B13/2491G01S7/34G01S7/4008G01S13/003G01S13/04
    • PROBLEM TO BE SOLVED: To provide a microwave receiver in which wave detection accuracy is enhanced, by circumventing the influence of the fluctuations of the frequency of an oscillator. SOLUTION: The present invention relates to the microwave receiving apparatus, including: a local oscillator which supplies a local signal, having a frequency according to a supplied voltage; a mixer which combines a received microwave signal with the local signal, to output an intermediate frequency; a filter which the intermediate frequency signal passes through; a phase shifter which shifts the phase of the intermediate frequency signal that has passed through the filter by a predetermined angle; and a phase detection unit which supplies a voltage to the local oscillator, according to the phase difference, between the intermediate frequency signal which has passed through the filter and the output of the phase shifter. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:通过避免振荡器的频率的波动的影响,提供其中提高波检测精度的微波接收机。 微波接收装置技术领域本发明涉及一种微波接收装置,包括:本地振荡器,其提供根据所提供的电压具有频率的本地信号; 混合器,其将接收的微波信号与本地信号组合,以输出中频; 中频信号通过的滤波器; 移相器,其将已经通过滤波器的中频信号的相位偏移预定角度; 以及根据在通过滤波器的中频信号和移相器的输出之间的相位差向本地振荡器提供电压的相位检测单元。 版权所有(C)2010,JPO&INPIT
    • 7. 发明专利
    • Microwave sensor apparatus and microwave sensor system
    • 微波传感器装置和微波传感器系统
    • JP2009266212A
    • 2009-11-12
    • JP2009059910
    • 2009-03-12
    • Hitachi Kokusai Denki Engineering:Kk株式会社日立国際電気エンジニアリング
    • NISHISATO YOSHITERUNARITA SHINYA
    • G08B13/181G01S7/285G01S13/88
    • G01S13/003G01S7/34G01S13/04G08B13/2491G08B29/20
    • PROBLEM TO BE SOLVED: To provide a microwave sensor apparatus ensuring a stable detection operation even if the detection area includes many reflected waves. SOLUTION: The microwave sensor apparatus includes a reception detection circuit 30 for amplifying and detecting a microwave received through a reception antenna and outputting a reception detection signal, a monitoring means 42 to 44 for monitoring the reception detection signal output from the reception detection circuit and outputting an intrusion alarm when detecting a change in the reception detection signal by a predetermined value, a reflected wave detection part 80, 80' for detecting whether there are any reflected waves in the detection area from the reception detection signal output from the reception detection circuit, and an AGC circuit 60 and 70 for controlling a gain of the reception detection circuit at a response rate faster than when no reflected waves are detected, when the reflected wave detection part detects the reflected waves. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:即使检测区域包括许多反射波,​​也提供一种确保稳定的检测操作的微波传感器装置。 解决方案:微波传感器装置包括用于放大和检测通过接收天线接收的微波并输出接收检测信号的接收检测电路30,用于监视从接收检测输出的接收检测信号的监视装置42至44 检测接收检测信号的变化达预定值时输入入侵报警;反射波检测部80,80',用于检测从接收中输出的接收检测信号中检测区域中是否存在反射波 检测电路以及AGC电路60和70,用于当反射波检测部分检测到反射波时,以比未检测到反射波更快的响应速度来控制接收检测电路的增益。 版权所有(C)2010,JPO&INPIT