公开(公告)号：US3719928A

公开(公告)日：1973-03-06

申请号：US3719928D

申请日：1971-02-10

申请人： HITACHI LTD ,  TOKYO ELECTRIC POWER CO

发明人： OISHI H ,  KUDO Y ,  KOBAYASHI H ,  AOKI F ,  KAWANNO S ,  HYODO T

IPC分类号： H04M11/06 ,  G08C15/00 ,  H04M11/00 ,  H04Q9/08 ,  H04Q9/10 ,  H04Q9/00

CPC分类号： H04Q9/08

摘要： An information detection method and system for carrying out the automatic reading of meters disposed in domestic users houses. A series resonance circuit having a peculiar resonance frequency is connected in parallel to each meter and on-off controlled by the meter at certain quantity of consumption. A sweep oscillator generates a sweep signal and supplied it through hybrid circuits to the resonance circuit, the hybrid circuits mixing the sweep signal and the reflected signal to provide a detection signal with no noise. Such a detection signal is allowed to pass through a gate which is controlled by the sweep signal and reference resonance circuits.

摘要翻译： 一种信息检测方法和系统，用于对家用电器中的电表进行自动阅读。 具有特殊谐振频率的串联谐振电路并联连接到每个电表并以一定的消耗量由电表控制开关。 扫频振荡器产生扫频信号并通过混合电路将其提供给谐振电路，混合电路混合扫频信号和反射信号，以提供无噪声的检测信号。 这样的检测信号被允许通过由扫描信号和参考谐振电路控制的栅极。

公开(公告)号：US3710373A

公开(公告)日：1973-01-09

申请号：US3710373D

申请日：1970-05-11

申请人： MATSUSHITA COMMUNICATION IND ,  TOKYO ELECTRIC POWER CO

发明人： WATANABE S ,  OZAKI K ,  OISHI H ,  AOKI F ,  KAWANO S

IPC分类号： H02J13/00 ,  G08C15/10

CPC分类号： H02J13/0041

摘要： An improvement in a signal discriminating system used in a monitoring and control system for a low voltage commercial power distribution line, in which a high frequency signal is superimposed on the power current of 50 or 60 Hz, as a communication medium between a monitoring spot and consumers connected to the distribution line; the improvement resides in that in the centralized reading of the meters of respective consumers, the monitoring channel is time-divided or frequencydivided in order to provide a reference signal level peculiar to each consumer.

摘要翻译： 在用于低压商用配电线路的监视和控制系统中使用的信号鉴别系统的改进，其中高频信号叠加在50或60Hz的功率电流上，作为监控点和 消费者连接到配电线; 改进在于，在对各个消费者的米的集中读取中，监视信道被分时或分频，以便提供每个消费者所特有的参考信号电平。

公开(公告)号：US3721830A

公开(公告)日：1973-03-20

申请号：US3721830D

申请日：1971-06-18

申请人： TOKYO ELECTRIC POWER CO ,  OSAKI ELECTRIC CO LTD

发明人： KAWANO S ,  KIKUTA S ,  OISHI H ,  AOKI F ,  SHIRAKAWA M

IPC分类号： H02J13/00 ,  G08C19/24

CPC分类号： H02J13/0051 ,  Y02B90/263 ,  Y04S40/123

摘要： A pulse dip carrier system comprises a series circuit having an electronic switch and a capacitor and being connected in parallel to an AC distribution line, and a phase shifter circuit for controlling the electronic switch by the phase shifter output. The electronic switch closes under the control of the phase shifter circuit when the phase of the line voltage of AC distribution line to a point of the zero instantaneous value thereof comes to a predetermined angle, a charging current flows in the capacitor when the electronic switch is closed whereby steep pulse dip is generated on the wave of the line voltage.

摘要翻译： 脉冲放大载波系统包括具有电子开关和电容器并且与AC配电线并联连接的串联电路和用于通过移相器输出来控制电子开关的移相器电路。 当AC分配线的线电压相对于其零瞬时值的相位达到预定角度时，电子开关在移相器电路的控制下闭合，当电子开关为电子开关时，充电电流流过电容器 闭合，由此在线电压的波上产生陡峭的脉冲下降。