Canon Kabushiki Kaisha

Kabushiki Kaisha Toshiba

Sony Corporation

Takeshi Ide

Norimitsu Abe

Seiichi Murayama

Shinji Kobayashi

Akihiko Shirota

Takahiro Soma

Kenji Takeuchi

Hiroyuki Suzuki

Yasuhiro Ueda

Takeshi Matsushiro

Daishiro Sekijima

Shojiro Tamaki

Akira Morikawa

Kie Kubo

Ryoichi Arimura

Masao Kaneko

Naoto Yoshizawa

Masumi Nakadate

Naato Yoshizawa

A control system includes a switch circuit configured to switch an alternating-current voltage, a power transmission antenna configured to wirelessly transmit power based on the alternating-current voltage determined by switching of the switch circuit, a power reception antenna configured to wirelessly receive the power wirelessly transmitted from the power transmission antenna, a rectification circuit configured to rectify a voltage output from the power reception antenna to apply the alternating-current voltage to a load unit, a current detection unit configured to detect an alternating current flowing through the switch circuit, and a control unit configured to control a value of the alternating-current voltage applied to the switch circuit based on a value of the alternating current detected by the current detection unit.

Control system and method of controlling control system

A control system is provided that includes a power transmitting coil for wirelessly transmitting power supplied from a power source, a power receiving coil for wirelessly receiving power by electromagnetic coupling between the power transmitting coil and the power receiving coil, a driving circuit configured to drive a load portion using the power received via the power receiving coil, a transmitting coupler for wirelessly transmitting a transmission signal for controlling driving of the load portion, a receiving coupler for wirelessly receiving the transmission signal by electromagnetic coupling between the transmitting coupler and the receiving coupler, and a generation circuit configured to generate a driving signal for controlling the driving circuit from the transmission signal received via the receiving coupler.

Control system and control method

A power transmission unit includes a switching unit configured to switch alternating-current (AC) power at a timing based on a first clock signal and wirelessly transmit the switched AC power, and a clock transmission unit configured to wirelessly transmit the first clock signal. A power reception unit includes a clock reception unit configured to receive the first clock signal, a detection unit configured to detect an amount of electric power and a switching timing of the AC power, a clock generation unit configured to generate a second clock signal based on the switching timing, a clock selection unit configured to select the first or second clock signal in accordance with the amount of electric power, and a rectifying unit configured to switch the AC power wirelessly transmitted by the switching unit at a timing based on the clock signal selected.

Control system and method for controlling the same

A control system includes a phase shift unit configured to provide a phase difference between a first switching clock signal and a second switching clock signal, a power transmission coil, a switching circuit configured to switch an input voltage based on the first switching clock signal and apply the switched voltage to the power transmission coil, a power reception coil configured to receive electric power output from the power transmission coil by electromagnetic field coupling, a wireless transmission unit configured to wirelessly transmit the second switching clock signal and output a third switching clock signal, and a rectifier circuit configured to rectify a voltage input from the power reception coil by switching the voltage based on the third switching clock signal and apply the rectified voltage to a load. A voltage input from the power reception coil to the rectifier circuit and the third switching clock signal have different phases.

Control system

A wireless transmission system includes a first substrate and a second substrate. A first coil used for wireless power transmission, a first light emitting element that is arranged inside the first coil and that is used for wireless communication, and a first light receiving element arranged on the same circumference as that of the first light emitting element are arranged on the first substrate. The first substrate and the second substrate are arranged so as to be opposed to each other so that a second light emitting element and a second light receiving element, which are arranged on the second substrate, are opposed to the first light emitting element and the first light receiving element.

Wireless transmission system, control method, and storage medium

When performing contactless communication, occurrence of error in data determined on the receiving side due to attenuation of a wireless signal is prevented on both receiving sides by using a simple configuration. Provided is a wireless communication device including: a transmitting unit provided on a first member and a receiving unit provided on a second member and located at a varying relative distance to the transmitting unit, the transmitting unit generates a first electric signal obtained by superimposing a pilot signal on a digital signal to be transmitted and transmits a wireless signal having an intensity in accordance with the first electric signal, the receiving unit generates a second electric signal in accordance with the intensity of the received wireless signal and detects a pilot signal component from the second electric signal, and the second electric signal is amplified in accordance with an attenuation amount of the pilot signal component.

Wireless communication device and apparatus

An UV-irradiation apparatus of an embodiment is provided with an irradiation unit, a measuring unit, a detecting unit, a calculator and a display. The irradiation unit irradiates treatment water as a treatment target with treating ultraviolet rays. The measuring unit measures ultraviolet ray intensity of ultraviolet rays transmitted through the treatment water. The detecting unit detects a deterioration of the irradiation unit in accordance with the ultraviolet ray intensity measured by the measuring unit. The calculator calculates the ultraviolet ray permeability of the treatment water, on the basis of the ultraviolet ray intensity of ultraviolet rays emitted from the irradiation unit depending on a preset setting value and the ultraviolet ray intensity measured by the measuring unit. The display displays the detection result of the deterioration of the irradiation unit by the detecting unit, and the ultraviolet ray permeability calculated by the calculator.

UV-irradiation apparatus

According to one embodiment, an apparatus for measuring hydroxyl radicals that measures hydroxyl radicals produced by irradiating a liquid to be treated flowing through a channel in which an ultraviolet lamp is arranged with ultraviolet rays, the apparatus includes a diverting unit, a reagent adding unit, and a measuring unit. The diverting unit has a diverting channel that diverts the liquid to be treated before being irradiated with the ultraviolet rays from the channel and part of which is arranged at a position enabling the liquid to be treated within the channel to be irradiated with the ultraviolet rays. The reagent adding unit adds a hydroxyl radical measuring reagent to the diverted liquid to be treated. The measuring unit irradiates the diverted liquid to be treated with the ultraviolet rays and measures the amount of hydroxyl radicals produced based on a change in the hydroxyl radical measuring reagent between before and after the irradiation with the ultraviolet rays.

Apparatus for measuring hydroxyl radicals and liquid treatment apparatus

An ultraviolet irradiation apparatus according to an embodiment includes a reaction tank including an inlet port for introducing to-be-treated water, and a discharge port for discharging to-be-treated water after treatment, a first ultraviolet lamp, and an ultraviolet monitor including an ultraviolet sensor. The first ultraviolet lamp is accommodated in a first protection tube including both end portions fixed in the reaction tank. The ultraviolet monitor is accommodated in a second protection tube, the second protection tube is disposed in parallel to the first protection tube, and both end portions of the second protection tube are fixed in the reaction tank.

Ultraviolet irradiation apparatus

According to an embodiment, an ultraviolet (UV) irradiation apparatus includes a treatment tank, a UV irradiation member, a UV sensor, and an air outlet unit. The air outlet unit is connected to an air outlet hole provided at a position higher than a horizontal plane that passes through the UV sensor, and is provided to release, to the outside of the treatment tank, through the air outlet hole, air that accumulates inside the treatment tank when the treated waterlasses through the inside of the treatment tank.

A first resistor group and second resistor group are respectively made up of at least three resistive elements connected in series and are adapted to shift respectively direct-current voltage levels of a first signal and second signal to voltage levels obtained by dividing a direct-current voltage between a power source line and ground line. A common mode choke coil is installed between the power source line and the first and second resistor groups. The common mode choke coil includes a first coil unit adapted to connect the power source line with one end of the first resistor group, and a second coil unit adapted to connect the power source line with one end of the second resistor group and magnetically coupled to the first coil unit. This suppresses propagation of power source noises of the same phase to the resistor groups.

Differential transmission circuit and electronic apparatus

A power source circuit includes a switching circuitthat converts a direct current voltage obtained by converting an alternating voltage from an alternating power source input through a pair of power supply linesandinto a predetermined direct current voltage by a switching operation. A fuseis provided on one power supply line. A series circuitincluding a first line bypass capacitorand a resistor elementis connected between one power supply lineand a ground. A second line bypass capacitoris connected between the other power supply lineand the ground. Imbalance of the circuit by an excess current protection element is prevented to reduce common mode noise.

Printed circuit board

In a power source circuit including a switching circuitas a power conversion circuit for converting by a switching operation at least one of a frequency and a voltage of an alternating voltage from an alternating power sourcevia a pair of supply linesand, one supply lineincludes a fuseas an excess current protection element, and between a ground lineand one supply line, a first line bypass capacitoris connected. Between the ground lineand another supply line, a second line bypass capacitoris connected, and another supply lineincludes an inductor. With this configuration, an unbalanced state of the circuit due to the excess current protection element is reduced so as to restrain the common mode noise.

Power source circuit

According to one embodiment, an ultraviolet water treatment apparatus includes an ultraviolet lamp unit provided with a first plumbing flange coupling on each of both ends thereof, and further provided therein with an ultraviolet irradiation tube including an ultraviolet lamp and a lamp protective tube configured to protect the ultraviolet lamp, and a cleaning device drive unit provided with a second plumbing flange coupling on each of both ends thereof and configured to drive a cleaning device configured to clean a surface of the lamp protective tube. The ultraviolet lamp unit and the cleaning device drive unit are coupled with each other on the first and second plumbing flange couplings.

Growing community of inventors

Kamakura, Japan

Takeshi Ide