Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 6. Отображено 6.
27-04-2011 дата публикации

Method for inverting and demodulating temperature field by fiber Bragg grating fast spectrum

Номер: CN0102032954A
Автор: Chen Nuo, Ding Yuetong, Chen Zhenyi, Chen Shaofeng, Ding Ding, Wang Tingyun
Принадлежит:

The invention relates to a method for inverting and demodulating a temperature field by a fiber Bragg grating fast spectrum. By combining an inverting algorithm with a matrix transmission method and a relevant single particle algorithm, the inverted fiber grating spectrum approaches to the actual spectrum by multiple iterations and thereby the optimum solution is found out and the corresponding temperature field is the actual temperature field distribution. According to the search method of the temperature field, the temperature of each section in the temperature field has larger relevance with the optimum solution obtained by front several iterations and has a certain relevancy with adjacent sections. The method solves the problem that the traditional grating inverting algorithm consumes longer time, can be used for quickly demodulating the axial nonuniform temperature field applied on the grating, is simple and practical and can be used for quickly monitoring the nonuniform temperature ...

Подробнее
Номер записи: 1
01-06-2011 дата публикации

Real-time distributed temperature control system during laser-induced interstitial thermotherapy

Номер: CN0102081415A
Автор: NA CHEN, YUETONG DING, DING DING, SHAOFENG CHEN, ZHENYI CHEN, TINGYUN WANG, CHEN NA, DING YUETONG, CHEN SHAOFENG, CHEN ZHENYI, WANG TINGYUN
Принадлежит:

The invention relates to a real-time distributed temperature control system during laser-induced interstitial thermotherapy. The system comprises a treatment laser light source, a light guide optical fiber, a sensing fiber grating, a broadband light source, a circulator, a spectrometer, a computer and a treatment laser light source control circuit, wherein treatment laser is injected into tissues to be treated through the light guide optical fiber to form a temperature distribution field, so that the reflection spectrum of the sensing fiber grating is correspondingly changed, and is acquired by the spectrometer through the circulator; and the computer acquires the reflection spectrum from the spectrometer and calculates the temperature distribution condition of a treatment area in real time according to a demodulation algorithm, and the output power of the laser light source is subjected to real-time feedback control by the control circuit through the temperature distribution field, so ...

Подробнее
Номер записи: 2
11-07-2012 дата публикации

Method for inverting and demodulating temperature field by fiber Bragg grating fast spectrum

Номер: CN0102032954B
Автор: CHEN NA, DING YUETONG, CHEN ZHENYI, CHEN SHAOFENG, DING DING, WANG TINGYUN, NA CHEN, YUETONG DING, ZHENYI CHEN, SHAOFENG CHEN, TINGYUN WANG
Принадлежит:

The invention relates to a method for inverting and demodulating a temperature field by a fiber Bragg grating fast spectrum. By combining an inverting algorithm with a matrix transmission method and a relevant single particle algorithm, the inverted fiber grating spectrum approaches to the actual spectrum by multiple iterations and thereby the optimum solution is found out and the corresponding temperature field is the actual temperature field distribution. According to the search method of the temperature field, the temperature of each section in the temperature field has larger relevance with the optimum solution obtained by front several iterations and has a certain relevancy with adjacent sections. The method solves the problem that the traditional grating inverting algorithm consumeslonger time, can be used for quickly demodulating the axial nonuniform temperature field applied on the grating, is simple and practical and can be used for quickly monitoring the nonuniform temperature ...

Подробнее
Номер записи: 3
23-05-2012 дата публикации

Optical fiber extrinsic Fabry-Perot interference ultrasonic sensing and detection device

Номер: CN0101762318B
Автор: CHEN NA, CHEN ZHENYI, DING YUETONG, PANG FUFEI, SUN QINGGUO, WANG TINGYUN, ZHANG CHAO, NA CHEN, ZHENYI CHEN, YUETONG DING, FUFEI PANG, QINGGUO SUN, TINGYUN WANG, CHAO ZHANG
Принадлежит:

The invention discloses an optical fiber extrinsic Fabry-Perot interference ultrasonic sensing and detection device, comprising a 1550nm light source, a 1550nm optical circulator, an optical fiber Fabry-Perot ultrasonic sensor, a photoelectric transition module, a signal amplification module, an oscillograph, a piezoelectric transducer and a signal generator. The basic structure of the optical fiber Fabry-Perot ultrasonic sensor is composed of a single mode optical fiber, a quartz vibrating membrane, an outer ceramic bushing, an inner ceramic bushing and a metal base. The light emitted by the1550nm light source reaches the optical fiber Fabry-Perot ultrasonic sensor through the optical circulator, when ultrasonic wave acts on the ultrasonic sensor, as the light reflected by the optical fiber Fabry-Perot ultrasonic sensor is modulated by the ultrasonic signal, the reflected light reaches the photoelectric conversion module by the circulator and then is converted into an electric signal, ...

Подробнее
Номер записи: 4
30-06-2010 дата публикации

Optical fiber extrinsic Fabry-Perot interference ultrasonic sensing and detection device

Номер: CN0101762318A
Автор: CHEN NA, CHEN ZHENYI, DING YUETONG, PANG FUFEI, SUN QINGGUO, WANG TINGYUN, ZHANG CHAO, NA CHEN, ZHENYI CHEN, YUETONG DING, FUFEI PANG, QINGGUO SUN, TINGYUN WANG, CHAO ZHANG
Принадлежит:

The invention discloses an optical fiber extrinsic Fabry-Perot interference ultrasonic sensing and detection device, comprising a 1550nm light source, a 1550nm optical circulator, an optical fiber Fabry-Perot ultrasonic sensor, a photoelectric transition module, a signal amplification module, an oscillograph, a piezoelectric transducer and a signal generator. The basic structure of the optical fiber Fabry-Perot ultrasonic sensor is composed of a single mode optical fiber, a quartz vibrating membrane, an outer ceramic bushing, an inner ceramic bushing and a metal base. The light emitted by the 1550nm light source reaches the optical fiber Fabry-Perot ultrasonic sensor through the optical circulator, when ultrasonic wave acts on the ultrasonic sensor, as the light reflected by the optical fiber Fabry-Perot ultrasonic sensor is modulated by the ultrasonic signal, the reflected light reaches the photoelectric conversion module by the circulator and then is converted into an electric signal, ...

Подробнее
Номер записи: 5
30-06-2010 дата публикации

Local discharging on-line detecting and positioning system for electric transformer

Номер: CN0101762777A
Автор: CHEN NA, CHEN ZHENYI, DING YUETONG, PANG FUFEI, SUN QINGGUO, WANG JING, WANG TINGYUN, NA CHEN, ZHENYI CHEN, YUETONG DING, FUFEI PANG, QINGGUO SUN, JING WANG, TINGYUN WANG
Принадлежит:

The invention relates to a local discharging on-line detecting and positioning system for an electric transformer, which comprises an ARM processor. The ARM processor is connected with a multi-way signal detecting channel, a LCD (Liquid Crystal Display) screen, a keyboard, a SD (Secure Digital) card seat and a serial port. The multi-way signal detecting channel is formed by an optical fiber ultrasonic sensor sequentially connected with an photoelectric diode, an I/V converter, an amplifier, a filter and a threshold judger. The optical fiber ultrasonic sensor in the multi-way signal detecting channel detects an acoustic transmission signal generated during local discharging, and the acoustic transmission signal is output by the threshold judger after photoelectric conversion, I/V conversion, amplification and filtration. The ARM processor is used for analyzing and processing the multi-way detecting signal, displaying the position of the discharging source on the LCD screen, storing data ...

Подробнее
Номер записи: 6