公开(公告)号：US20170019966A1

公开(公告)日：2017-01-19

申请号：US15124655

申请日：2015-03-05

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yoshifumi SUEHIRO ,  Masanori HAYASHI ,  Kiyoshi GOTO

IPC: H05B33/08 ,  H05B39/04

CPC classification number: H05B33/0815 ,  H05B33/0845 ,  H05B39/041 ,  Y02B20/346

Abstract: A determiner determines whether an illumination load is an LED illumination device or an incandescent lamp, based on a voltage of a rectifier within a time period from start of supply of the AC voltage to the rectifier to a time a predetermined time elapses. A control circuit controls a driver under a condition where values of a conduction angle of a switch corresponding to magnitudes of the first DC voltages except a maximum and a minimum thereof in a case where the determiner determines that the illumination load is the LED illumination device are smaller than values of the conduction angles of the switch of a case where the determiner determines that the illumination load is the incandescent lamp.

Abstract translation: 确定器基于在从开始供应AC电压到整流器的时间段内的整流器的电压到经过预定时间的时间，确定照明负载是LED照明装置还是白炽灯。 在确定器确定照明负载是LED照明装置的情况下，控制电路在对应于除了最大值和最小值之外的第一DC电压的大小的开关的导通角的值的条件下控制驱动器是 小于确定器确定照明负载是白炽灯的情况的开关的导通角的值。

公开(公告)号：US20200182782A1

公开(公告)日：2020-06-11

申请号：US16641449

申请日：2018-07-20

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Masanori HAYASHI ,  Yoshifumi WATABE ,  Hirotaka MATSUNAMI

IPC: G01N21/3554 ,  D06F34/18

Abstract: A moisture amount detection device includes: a light source that projects light that flickers at a predetermined frequency toward an object; a light receiver that receives the light reflected by the object and outputs a detection signal; an amplifier that outputs an amplified signal obtained by amplifying the detection signal by a predetermined amplification factor; a lock-in amplifier that outputs an extracted signal obtained by extracting a signal of a predetermined frequency from the amplified signal; an A/D converter that performs A/D conversion on the extracted signal, and outputs a digital signal; a second low-pass filter whose passband is changeable, and that allows a signal of a frequency in the passband in the digital signal to pass therethrough; and a controller that performs first control to change the passband according to a signal intensity indicated by the digital signal.

公开(公告)号：US20170150569A1

公开(公告)日：2017-05-25

申请号：US15300089

申请日：2015-03-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masanori HAYASHI ,  Yoshifumi SUEHIRO ,  Kiyoshi GOTO

IPC: H05B33/08

CPC classification number: H05B33/0851 ,  H05B33/0809 ,  H05B33/0815 ,  H05B33/0818 ,  H05B33/0845 ,  H05B39/041 ,  H05B39/048 ,  Y02B20/148

Abstract: A light-dimming device includes a switch including a switching device, a controller, and a power supply module. The power supply module includes a capacitor to be charged by a constant voltage circuit. The controller includes a driver circuit, a zero-cross detection circuit, a detecting circuit, and a control circuit, and receive electric power from the capacitor. The driver circuit drives the switching device in accordance with a PWM signal. The control circuit starts generation of a pulse, to be contained in the PWM signal, for turning on the switching device after the zero-cross detection circuit detects zero-cross and also a voltage across the capacitor is threshold or more.