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    • 6. 发明申请
    • PRESENCE DETECTION SYSTEM, PRESENCE DETECTION METHOD, AND PROGRAM
    • 存在检测系统,存在检测方法和程序
    • US20140015706A1
    • 2014-01-16
    • US14009343
    • 2011-04-04
    • Masahiro IshiharaYoshiaki Koizumi
    • Masahiro IshiharaYoshiaki Koizumi
    • G01S13/04
    • G01S13/04G01S13/003G01V8/20G08B21/22
    • A presence detection system is equipped with a transmitter that transmits a multipath wireless signal and a receiver that detects the presence of a person by receiving the transmitted wireless signal, within a prescribed space. On the basis of the reception level for a wireless signal received intermittently at the beginning of a first interval, the receiver determines whether there has been a change in the present/absent state of a person. When it is determined that there has been a change in the present/absent state of a person, the receiver determines whether a person is present/absent on the basis of variation in the reception level for a wireless signal received at the beginning of a second interval, which is shorter than the first interval.
    • 存在检测系统配备有通过在规定空间内接收所发送的无线信号来发送多径无线信号的发射机和检测人的存在的接收机。 基于在第一间隔开始时间歇地接收的无线信号的接收电平,接收机确定人的当前/不存在状态是否发生变化。 当确定人的当前/不存在状态发生变化时,接收机基于在第二个开始时接收到的无线信号的接收电平的变化来确定一个人是否存在 间隔,比第一个间隔短。
    • 9. 发明申请
    • POWER SUPPLY UNIT
    • 供电单元
    • US20090212851A1
    • 2009-08-27
    • US12342710
    • 2008-12-23
    • Osamu YAMASHITAYasuhiko KokamiMasahiro IshiharaToshiyuki Tsunoda
    • Osamu YAMASHITAYasuhiko KokamiMasahiro IshiharaToshiyuki Tsunoda
    • G05F1/10
    • H02M1/32H02M3/158H02M2001/0009H02M2001/0025
    • High-accuracy overcurrent detection is performed, while a loss resulting from the current detection is significantly reduced. A switch section outputs the voltage between the both terminals of a current detection resistor using an AND signal between an output signal from a hysteresis comparator and an output signal from a pre-driver. The voltage is filtered by an electrostatic capacitor element and a resistor, and inputted to a comparator. The comparator makes a comparison between the signals inputted to the two input terminals thereof, and outputs the result of the comparison to a digital filter. When an overcurrent begins to flow in a power supply unit, the levels of the voltages inputted to the two input terminals of the comparator are inverted so that the comparator outputs an inversion signal to the digital filter. The digital filter outputs a detection signal to an overcurrent detection circuit when an arbitrary time has elapsed.
    • 执行高精度过电流检测,而由电流检测导致的损耗显着降低。 开关部分使用来自迟滞比较器的输出信号和来自预驱动器的输出信号之间的AND信号来输出电流检测电阻器的两端之间的电压。 电压由静电电容器元件和电阻器滤波,并输入到比较器。 比较器对输入到其两个输入端的信号进行比较,并将比较结果输出到数字滤波器。 当过电流在电源单元中流动时,输入到比较器的两个输入端的电压的电平被反相,使得比较器向数字滤波器输出反相信号。 当任意时间过去时,数字滤波器将检测信号输出到过电流检测电路。