Pioneer Corporation

Pioneer Electronic Corporation

Nikkiso Company Limited

Air Water Biodesign Inc.

Pioneer Electric Corporation

Pioneer Micro Technology Corporation

Pioneer Coorperation

501 Pioneer Electronic Corporation

Kiyoshi Tateishi

Junichi Furukawa

Kazuo Takahashi

Mitsuru Sato

Michikazu Hashimoto

Takanori Maeda

Tomoya Murakami

Akari Agata

Genki Adachi

Noriaki Murao

Wataru Onodera

Haruyasu Sakata

Atsuya Ito

Masakazu Ogasawara

Hideki Kobayashi

Yuji Tawaragi

Masanori Suzuki

Hajime Koyanagi

Sakashi Ohtaki

Masaki Kobayashi

Ichiro Sugai

Tomotaka Yabe

Tadashi Kondo

Jun Suzuki

Kaoru Yamamoto

Hideki Hayashi

Atsushi Onoe

Ikuya Kikuchi

Yoshitsugu Araki

Yoshinori Kimura

Tsutomu Takahashi

Hirokazu Takahashi

Koichi Ishitoya

Masaru Umezawa

Sakashi Ootaki

Toshimasa Hangai

Yoshihiro Hanada

Hiroaki Abe

Takayuki Ohie

Michiaki Nakamura

An optical measurement device is provided with: a light source that irradiates, with light, a measurement object which has a fluid flowing thereinside; a light receiving unit which, upon receipt of scattered light from the measurement object irradiated with light, outputs a light reception signal according to the intensity of the scattered light; a disturbance generation unit which generates a disturbance signal for causing oscillation of a drive current to be supplied to the light source; and an adjustment unit which adjust the drive current on the basis of the result of a comparison between the disturbance signal and a signal generated on the basis of the light reception signal.

Optical measurement apparatus, optical measurement method, computer program, and recording medium

This fluid evaluation device is provided with an irradiation unit for irradiating a fluid with light, a light reception unit for receiving scattered light from the fluid and outputting a light reception signal, and an estimation unit for estimating at least one from among flow rate and density by mapping input points, which are on a first plane defined by flow rate and frequency and are expressed by light amount information indicating the amount of scattered light included in the light reception signal and frequency information indicating a frequency for a beat signal resulting from the Doppler shifting of the light included in the light reception signal, onto a second plane defined by fluid flow rate and fluid density.

Fluid evaluation apparatus and method, computer program, and recording medium

This fluid measuring device is provided with: an irradiation unit that irradiates a fluid with light; a light receiving unit that receives light scattered by the fluid; a detecting unit that detects a backflow of the fluid on the basis of a light reception signal from the light receiving unit; and a calculating unit that calculates, on the basis of the detection result by the detection unit and the light reception signal from the light receiving unit, estimated fluid information indicating the flow rate or flow speed of the fluid. Accordingly, even when a backflow of the fluid temporarily occurs, the flow speed of the fluid can be precisely measured.

Fluid measuring device

This temperature control device is provided with: an endothermic/exothermic unit that heats or cools a subject to be subjected to temperature control; a temperature detection unit that detects the first temperature of the periphery of the subject; a control unit that controls the endothermic/exothermic unit on the basis of a variable target temperature; and a variable target temperature setter that sets the variable target temperature to a first variable target temperature on the basis of the first temperature and target temperature information indicating the target temperature. With such temperature control device, since the target temperature changes to a suitable value as needed, a time needed until the temperature of the subject reaches the target temperature can be shortened.

Temperature control apparatus, temperature control method, computer program, and recording medium

A fluid measuring apparatus is provided with: an irradiating device configured to irradiate a fluid with light; a light receiving device configured to receive light scattered by the fluid; a detecting device configured to detect a backflow of the fluid on the basis of a received light signal of the light receiving device; and a calculating device configured to calculate estimated concentration information indicating a concentration of the fluid, on the basis of a detection result of the detecting device and the received light signal of the light receiving device. By this, even if the backflow temporarily occurs in the fluid, the fluid concentration can be accurately measured.

Fluid measuring apparatus

These measurement devices are each provided with: irradiation unit that irradiate a fluid with light; a light-receiving unit that receives light scattered by the fluid; an acquiring unit that acquires fluid information which indicates the flow rate or the flow velocity of the fluid; and a control unit that controls the irradiation unit on the basis of the fluid information.

Measuring apparatus

A measuring apparatus () is an optical measuring apparatus provided with a probe portion () and a main body portion (), which are electrically connected to each other. The probe portion has: a light source (); a reference voltage generating device () configured to apply predetermined reference voltage to the main body portion; and a storing device () configured to store therein in advance current adjustment information, which is information for adjusting a drive current to be supplied to the light source. The main body portion has: a drive current supplying device () configured to supply the drive current to the light source, due to the applied reference voltage; and a controlling device () configured to control the drive current supplying device on the basis of the stored current adjustment information.

Measuring apparatus, probe portion, and connecting cable

A light detecting apparatus includes: a first photoelectric conversion element unit () and a second photoelectric conversion element unit () each of which converts input light to an electric current and output it; an optical current transducer unit () for outputting, as a detected current, a differential current between an electric current outputted by the first photoelectric conversion element unit and an electric current outputted by the second photoelectric conversion element unit; and a first current/voltage converting unit () for amplifying the detected current outputted from the optical current transducer unit, converting it to a voltage signal, and outputting the voltage signal.

Light detecting apparatus and fluid measuring apparatus

A light amount detecting apparatus includes: a photoelectric converting element converting quantity of light inputted to current; a current/voltage converting device having a positive input terminal connected to a first terminal of the photoelectric converting element, a negative input terminal connected to a second terminal of the photoelectric converting element, a negative output terminal for reversing polarity of a current inputted to the positive input terminal and outputting it as a voltage, a positive output terminal for reversing polarity of a current inputted to the negative input terminal and outputting it as a voltage, a first negative feedback resistor connecting the positive and negative output terminals, and a second negative feedback resistor connected between the negative and positive output terminals, the current/voltage converting device setting the photoelectric converting element in zero bias and converting the converted current to the voltage; and an amplifying device for amplifying the converted voltage.

Light amount detecting apparatus, and light amount information processing apparatus

A capaciatance detector is provided, which outputs an electric signal dependent on the capacitance present on an object to be measured. The capaciatance detector includes a measurement terminal to be disposed in contact with or in proximity to the object being measured; an impedance conversion circuit connected to the measurement terminal to form a resonant circuit; a reference phase oscillator for supplying a reference phase signal at a constant frequency to the resonant circuit; phase comparison means for outputting, as a capacitance detected signal, a phase difference signal indicative of the phase difference between a resonant signal, which is extracted from the resonant circuit in response to the reference phase signal being applied to the resonant circuit, and the reference phase signal; and resonance frequency regulation means for regulating the resonance frequency of the resonant circuit based on the phase difference signal.

Capacitance detector

A capacitance detecting apparatus which can detect the change in minute capacitance of a measuring object with high sensitivity comprises a signal generator, a differential amplifying circuit, and a detecting unit. The signal generator generates a probe signal w(t) to be applied to one end of the measuring object. The differential amplifying circuit amplifies differentially a response signal v() developed at the other end of the measuring object in response to the application of the probe signal w(t) and the probe signal w(t). The detecting unit detects capacitance change of the measuring object based on the amplified signal v(t) from the differential amplifying circuit.

Capacitance detecting apparatus

A physical properties detection device comprising a probe to be placed near or touching a surface of a ferroelectric; an oscillation loop including the probe and capacitance within the ferroelectric; and detection means for detecting a physical properties of the ferroelectric on the basis of a frequency variation of a measurement signal generated in the oscillation loop, the frequency variation accompanying application of an alternating electric field to the ferroelectric; and the physical properties detection device is further comprising frequency conversion means for converting the frequency of the measurement signal to a low frequency and outputting the resulting signal as a converted measurement signal; frequency control means for controlling the frequency of the converted measurement signal so as to match a target frequency; frequency detection means for generating a frequency detection signal that has a signal level corresponding to the frequency of the converted measurement signal; and synchronous detection means for synchronously detecting the frequency detection signal on the basis of a synchronization signal.

Physical properties detection device and physical properties detection method

A device for detecting polarization direction of a ferroelectric is provided. From a measurement signal provided through a probe disposed in contact with or near the surface of a ferroelectric, a demodulation means generates a detection signal having a signal level corresponding to a capacitance change of the ferroelectric due to application of an alternating electric field to a capacitor component formed in the ferroelectric directly below the probe. A synchronous detection means performs synchronous detection of the detection signal based on a synchronous signal and generates a polarization direction detection signal corresponding to the polarization direction of the ferroelectric. A pseudo-noise signal generation means generates a pseudo-noise signal with the same frequency as that of the electric field signal and a different phase and amplitude therefrom. The demodulation means includes a noise component removal means that removes noise components in the measurement signal through signal arithmetic processing with the pseudo-noise signal.

Device and method for detecting direction of polarization of ferroelectric material

A marker selection method includes: a marker generation step for generating a marker defining a position reference when recording data according to the modulation rule of the hologram recording/reproduction; a calculation step for calculating a correlation value indicating the correlation between a template image indicating a maker and each of a first verification image containing the marker shifted by a predetermined pixel and a second verification image containing data; and a selection step for selecting such a marker that the peak of the correlation value in the first verification image becomes greater than the peak of the correlation value in the second verification image. The selected marker is used as marker data in a marker generator in a recording processing circuit during recoding and as template data of the template matching processing circuit in the reproduction processing circuit during reproduction.

Marker selection method for hologram recording device

A template matching processing device includes: first calculation means for calculating a plurality of correlation values indicating the correlation between an inputted detection image and a predetermined template image for each pixel unit while shifting the template image with respect to the detection image in pixel unit; and second calculation means for calculation coordinate position of the detection image according to the coordinate position of the center of gravity of the correlation values.

Template matching processing apparatus and method, hologram reproducing apparatus and method, and computer program

Growing community of inventors

Tsurugashima, Japan

Kiyoshi Tateishi