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Information × Registration Number 0217U002912, 0117U001611 , R & D reports Title Radiation resistivity of the magnetic field sensors based on the graphene in neutron fluxes popup.stage_title Head Bolshakova Inessa, Доктор технічних наук Registration Date 20-12-2017 Organization Lviv Polytechnic National University popup.description2 At the 2nd stage, the work was carried out in accordance with the schedule: the control electronics were designed and manufactured for conducting experiments on irradiation, the installation of graphene sensors and coils of the test magnetic field was made into a fixture, the calibration of the fixture heads was made. The probe head of the fixture is an assembly in a metal case of a ceramic header with a ceramic coil of a test magnetic field, inside of which there are ceramic boards with graphene sensors. The wiring of all leads (sensors, coil winding and fixture cable) was performed on the contacts of the ceramic header. The probe head of the fixture is planned to locate in the channel of a nuclear reactor for on-line research of parameters of graphene sensors under environment of neutron irradiation. The assembled heads of the fixtures have been calibrated, i.e.: signals of the sensors and magnetic field coils were measured at different temperature values, the temperature dependences of these signals were constructed, the corresponding coefficients, which are entered in the bookmarks of the developed software of the computer which is connected to the control electronics unit, were calculated. The developed control electronics unit includes: a processing node of sensor signals and a control node of the induction coil. The scheme of the signal processing node consists of two main blocks: multiplex and processor. The circuit of the control node of the induction coil is made on the principle of "voltage-current" based on the operational amplifier. Before the start of the on-line measuring system, the developed computer software is configured to the appropriate mode and, in addition to temperature coefficients, the currents values and gain factors for the sensors are set, as well as the time intervals of the synchronous detector for correct operation of the system. Product Description popup.authors Большакова Інеса Антонівна Васильєв Олександр Васильович Гумен Степанія Степанівна Дюжков Дмитро Сергійович Когут Інна Володимирівна Михащук Юрій Сергійович Мороз Анатолій Петрович Пристопюк Олександр Васильович Фітель Оксана Василівна Шпак Денис Олександрович Шуригін Федір Михайлович popup.nrat_date 2020-04-02 Close