Relevant bibliographies by topics / Frequency meter

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
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Academic literature on the topic 'Frequency meter'

Author: Grafiati
Published: 4 June 2021
Last updated: 28 May 2022

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Journal articles on the topic "Frequency meter"

1

Brimicombe, Michael. "Frequency meter." Electronics Education 2000, no. 1 (December 1, 2000): 23–29. http://dx.doi.org/10.1049/ee.2000.0017.

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Elangovan, S. "Digital Frequency Meter." Electric Power Systems Research 21, no. 1 (April 1991): 17–21. http://dx.doi.org/10.1016/0378-7796(91)90033-j.

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Hinchberger, James L. "Billing Frequency and Meter Reading Frequency." Opflow 11, no. 1 (January 1985): 3. http://dx.doi.org/10.1002/j.1551-8701.1985.tb00373.x.

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IBRAHIM, KHALID M., MAHA A. S. JAAFAR, and MAJID A. H. ABDUL-KARIM. "Fast digital frequency meter." International Journal of Electronics 59, no. 2 (August 1985): 193–97. http://dx.doi.org/10.1080/00207218508920692.

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Kosyuk, V. I., and I. A. Pashanin. "Ultralow-frequency phase meter." Measurement Techniques 29, no. 8 (August 1986): 767–70. http://dx.doi.org/10.1007/bf00863967.

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Alampieva, E. M., R. T. Vasil'ev, and A. M. Filin. "Fast-response frequency meter." Measurement Techniques 32, no. 4 (April 1989): 382–85. http://dx.doi.org/10.1007/bf00866642.

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Cheesewright, Robert, Ali Belhadj, and Colin Clark. "Effect of Mechanical Vibrations on Coriolis Mass Flow Meters." Journal of Dynamic Systems, Measurement, and Control 125, no. 1 (March 1, 2003): 103–13. http://dx.doi.org/10.1115/1.1539098.

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An analytical study of the response of a simple Coriolis meter subjected to external mechanical vibrations and corresponding finite element studies of three commercially available meters are presented. These show that vibrations produce additional components in the meter sensor signals but that these components are only at the frequency of the vibrations. The results show that errors reported in vibration experiments, using any frequency except the meter drive frequency, are due to failure of the determination of the phase difference between the sensor signals. The results also show that external vibrations at the meter drive frequency produce a meter error regardless of the phase detection algorithm.
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Yanenko, Oleksii, and A. E. Arustamian. "DIGITAL PHASE FREQUENCY METER DISTANCE." Bulletin of Kyiv Polytechnic Institute. Series Instrument Making, no. 55(1) (June 29, 2018): 49–53. http://dx.doi.org/10.20535/1970.55(1).2018.135892.

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Tereshkov, V. V., and V. M. Avanesov. "Low-frequency digital phase meter." Measurement Techniques 35, no. 4 (April 1992): 477–80. http://dx.doi.org/10.1007/bf00978964.

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Krival’, I. I., A. I. Skripnyuk, A. V. Rudkovskiy, V. A. Protsenko, and O. A. Prisyazhnyuk. "Aspects of modernization of UA Ч3-101 frequency meter." Технология и конструирование в электронной аппаратуре, no. 1-2 (2020): 3–7. http://dx.doi.org/10.15222/tkea2020.1-2.03.

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JSC «Meridian» n. a. S. P. Korolyov at one point developed and mass-produced a wide-range microwave frequency meter of the 8-mm wavelength range UA Ч3-101. Over time, however, the device has become obsolete for a number of reasons, and the question arose of the need to replace it. Since the cost of foreign models of frequency meters with similar parameters available on the market is quite high, the enterprise’s capabilities in solving this issue were considered. The analysis showed that the development of a new similar frequency meter will also be quite expensive, but the modernization of the existing one might be much cheaper, since the enterprise has all the infrastructure for serial production of the upgraded frequency meter. This article describes technical solutions for the replacement of labor-consuming microwave components of the UA Ч3-101 frequency meter, such as microstrip and waveguide input microwave converters, as well as optimization of the frequency measuring process of the input signal, which allowed us to upgrade the device according to the requirements. The use of the developed broadband small-sized frequency converter in the modernized UA Ч3-101A frequency meter made it possible to simplify the circuit and the frequency measurement process as much as possible, to use only one input microwave converter, to significantly reduce the weight and size of the device, to abandon the labor-consuming and expensive waveguide components of the device, and to double the sensitivity upgraded frequency meter. The proposed technical solution allowed simplifying the production process of the frequency meter, making the device more convenient to use. In addition, due to the optimization of circuit and design solutions in the upgraded frequency meter, it was possible to combine the counter and the gate driver on the same board, combine the reference frequency block with a 100 MHz tunable generator, abandon the switch, which allowed reducing power consumption and increasing the reliability of the device.
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Dissertations / Theses on the topic "Frequency meter"

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Ballard, Valerie Jean. "Experiments with a high frequency laser slope meter." Thesis, University of Southampton, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367969.

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Passiopoulos, Georgios. "RF technology design issues for milli-meter wave wireless communications sectored antenna terminals." Thesis, King's College London (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271319.

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Kaubrys, Evaldas. "Dažnio matavimo stendo sudarymas ir tyrimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140616_164417-07979.

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Dažnio matavimo stendo sudarymas ir tyrimas. Magistro baigiamasis darbas elektronikos inžinerijos laipsniui. Vilniaus Gedimino technikos universitetas. Vilnius, 2014, 71 p., 31 iliustr., 3 lent., 36 bibl., 6 priedai. Sukurtas ir ištirtas dažnio matavimo stendas, atskleidžiantis skaitmeninių dažnio ir periodo matavimo būdų ypatumus. Stendas pakeis šiuo metu laboratoriniuose darbuose naudojamus pasenusius prietaisus. Stendą sudaro 3 užduodantys generatoriai, dažnio sintezatorius, dažniamatis ir sąsaja su asmeniniu kompiuteriu, bendrame korpuse. Matavimo rezultatams įvertinti sukurta specializuota programinė įranga. Atlikus stendo tyrimus įsitikinta, kad sukurtas dažniamačio stendas atitinka visus užduoties reikalavimus.
Creation and investigation of frequency counter. Master's thesis in electronics engineering degree. Vilnius Gediminas Technical University. Vilnius , 2014, 71 p., 31 pictures, 3 tables, 36 references, 6 extras. Frequency counter stand have been created and investigated. Stand will allow students to familiarize themselves with particularities of digital measurement methods of frequency and duration of the period. The new stand will replace old measurement devices that are used during laboratory works recently. The stand consists of frequency synthesizer, frequency counter, 3 different reference generators and interface to the computer packed in single case. Specialized software have been created to assess and treat measurements results. Testing results of the bench proved that created frequency counter stand meets all the requirements of the task.
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Підлісний, Ярослав Володимирович, and Yaroslav Yaroslav Pidlisnyi. "Розробка конструкції цифрового частотоміра." Bachelor's thesis, ТНТУ ім. І Пулюя, 2021. http://elartu.tntu.edu.ua/handle/lib/35650.

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Темою кваліфікаційної роботи є розробка конcтрукції цифрового частотоміра, розраховано його основні технічні параметри, проведено якісну та кількісну оцінку технологічності, визначено умови аксплуатації та показники собівартості розкрито призначення, область застосування та технічні вимоги до проектованого радіопристрою, здійснено вибір елементної бази, описано принцип роботи по електричній принциповій схемі, та виконано її аналіз, виконано розрахунок електричних параметрів окремих каскадів та обґрунтування виробу і опис конструкції, розраховано надійність пристрою, здійснено аналіз технологічності конструкції виробу і розроблено маршрутно-операційної технології складання і монтажу друкованого вузла.
The topic of qualification work is the development of the Development of a digital frequency meter, its main technical parameters are calculated, qualitative and quantitative assessment of manufacturability is carried out, operating conditions and cost indicators are determined, purpose, scope and technical requirements to the designed radio device are revealed. according to the electrical schematic diagram, and its analysis is performed, calculation of electrical parameters of individual stages and substantiation of the product and design description, calculated reliability of the device, analysis of manufacturability of the product design and developed route-operational technology of assembly and installation of the printed assembly.
ВCТУП...6 1 ЗАГАЛЬНОТЕХНІЧНА ЧАСТИНА ЧАСТИНА ...8 1.1 Призначення і область застосування виробу...8 1.2 Вибір та пояснення структурної схеми...9 1.3 Пояснення принципу роботи та аналіз електричних схем...10 2 КОНСТРУКТОРСЬКО-ТЕХНОЛОГІЧНА ЧАСТИНА...12 2.1 Опис макета виробу. Причини вибору матеріалів та покриттів... 12 2.2 Обґрунтування вибору конструкції...12 2.3 Вибір елементної бази...13 2.4 Розрахунок електричних параметрів окремих каскадів...27 2.5 Оцінка теплового режиму роботи виробу, обчислення площі радіатора...33 2.6 Розрахунок надійності проектованого виробу ...33 2.7 Розрахунок споживаної потужності ...35 2.8 Загальна інформація про збірку та монтаж розробленого виробу. Вибирання типу технології ...36 2.9 Оцінка технологічності виробництва виробу. Підбір інструментів, приладів та обладнання ...37 2.10 Опис технології виготовлення друкованої плати. Вибір основних та допоміжних матеріалів...42 2.11 Кількісна оцінка технологічності друкованого вузла ...44 2.12 Розробка та проектування експлуатаційної технології маршруту та монтажу виробу ...48 2.13 Розробка технології ремонту та коригування виробу ...49 3 СПЕЦІАЛЬНА ЧАСТИНА...52 3.1 Опис реалізації поставленої задачі в системі автоматизованого проектування. ...52 3.2 Створення електричної схеми...53 3.3 Створення проекту друкованої плати ...57 4 ОХОРОНА ПРАЦІ ТА БЕЗПЕКА В НАДЗВИЧАЙНИХ СИТУАЦІЯХ ...60 4.1 Вимоги техніки безпеки при регулюванні та обслуговуванні виробу...60 4.2 Вибір засобів пожежної сигналізації...62 4.3 Оцінка стійкості роботи підприємства в надзвичайних ситуаціях природного характеру...66 4.4 Підвищення стійкості роботи підприємства, безпечність і можливість інженерного комплекс у протистояти надзвичайним ситуаціям...69 ВИСНОВКИ.... 72 ПЕРЕЛІК ПОСИЛАНЬ ...74
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Varley, Paul C. "An analysis of rhythm systems in the United States their development and frequency of use by teachers, students, and authors; and relation to perceived learning preferences /." Diss., St. Louis, Mo. : University of Missouri--St. Louis, 2005. http://etd.umsl.edu/r881.

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Deshpande, Kshitija Bharat. "A Dedicated Search for Low Frequency Radio Transient Astrophysical Events using ETA." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/35666.

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Astrophysical phenomena such as self-annihilation of primordial black holes (PBHs), gamma ray bursts (GRBs), and supernovae are expected to produce single dispersed pulses detectable in the low end of the radio spectrum. Analysis of these pulses could provide valuable information about the sources, and the surrounding and intervening medium. The Eight-meter-wavelength Transient Array (ETA) is a radio telescope dedicated to the search for these pulses in an 18 MHz bandwidth centered at 38 MHz. ETA consists of 10 dual-polarized active dipoles providing an all-sky field of view. This thesis describes the results of a search campaign using ETA, namely, a Crab giant pulse (CGP) search. CGPs are already known to exist, and thus provide an excellent diagnostic for system performance. We found 11 CGP candidates in 14 hours of data. Although there has not been a single compelling detection (signal-to-noise ratio > 6), our analysis shows that at least a few of these candidates may be CGPs. We also explain the analysis preparation for PBH and GRB searches. Additionally, we describe the instrument and a software "toolchain" developed for the analysis of data that includes calibration, radio frequency interference (RFI) mitigation, and incoherent dedispersion. A dispersed pulse simulation code was developed and used to test the toolchain. Finally, improvements are suggested.
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Томс, Богдан Євгенович, and Bohdan Toms. "Частотомір електронний." Bachelor's thesis, Тернопільський національний технічний університет імені Івана Пулюя, 2021. http://elartu.tntu.edu.ua/handle/lib/35538.

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Проведено аналіз методів та засобів вимірювання частоти. Обґрунтовано вибір інтервального методу вимірювання частоти. Вимірюваний сигнал перетворюється в послідовність імпульсів і вимірюється період їх слідування. На базі проведеного аналізу розроблено схеми електричну структурну частотоміра. Розроблено схему електричну принципову та проведено розрахунок каскадів. Розроблено алгоритм роботи лічильника періоду, відображення інформації та управління частотоміром. Частотомір управляється однією кнопкою. Технічні параметри частотоміра: Максимальна вимірювана частота 30 МГц; Максимальний крок вимірювання частоти 6 Гц; Чутливість по входу 250 мВ; Точність вимірювання частоти 0,01 Гц.
The analysis of methods and means of frequency measurement is carried out. The choice of interval method of frequency measurement is substantiated. The measured signal is converted into a sequence of pulses and the period of their following is measured. On the basis of the conducted analysis schemes of electric structural frequency meter are developed. An electrical circuit diagram has been developed and cascades have been calculated. An algorithm for the operation of the period counter, information display and frequency meter control has been developed. The frequency meter is controlled by one button. Technical parameters of the frequency meter: The maximum measured frequency is 30 MHz; Maximum frequency measurement step 6 Hz; Input sensitivity 250 mV; Frequency measurement accuracy 0.01 Hz.
Перелік умовних позначень, символів, одиниць, скорочень і термінів 7 Вступ 8 1 Основана частина 10 1.1 Аналіз технічного завдання 10 1.2 Обґрунтування методу вимірювання частоти 10 1.3 Схема електрична структурна 14 1.3.2 Розрахунок конденсаторів індивідуальної розв’язки 22 1.3.3 Вибір конденсаторів групової розв’язки живлення 23 1.3.4 Розрахунок елементів вхідного кола 24 1.4 Проектування програмне 32 1.4.1 Розробка алгоритму роботи мікроконтролера 32 1.5 Програма управління семисегментним індикатором 35 1.6 Конструкція друкованого вузла 43 2 Безпека життєдіяльності, основи охорони праці 46 2.1 Планування робіт з охорони праці та контроль за їх безпекою 46 2.2 Проведення аварійно-відновлювальних робіт на лініях і об’єктах зв’язку, радіомовлення і телебачення 49 Висновки 51 Список використаних джерел 52 Додатки 53
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Шелельо, Андрій Андрійович, and Andrii Shelelo. "Розробка автоматизованого акустичного вимірювача переміщень механічних об’єктів." Bachelor's thesis, Тернопільський національний технічний університет ім. І. Пулюя, Факультет прикладних інформаційних технологій та електроінженерії, Кафедра автоматизації технологічних процесів і виробництв, 2021. http://elartu.tntu.edu.ua/handle/lib/35518.

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Робота виконана на кафедрі автоматизації технологічних процесів і виробництв факультету прикладних інформаційних технологій та електроінженерії Тернопільського національного технічного університету імені Івана Пулюя Міністерства освіти і науки України. Захист відбудеться «25» червня 2021 р. о 9.00 год. на засіданні екзаменаційної комісії №21 у Тернопільському національному технічному університеті імені Івана Пулюя
В кваліфікаційній роботі розроблено акустичний вимірювач переміщення механічних об'єктів. Основне завдання розробки полягає в тому, щоб зробити цей пристрій зручним у використанні, дешевим і надійним. Використання цього пристрою надає можливість виміряти відстань або рух механічних об'єктів у важкодоступних місцях. Пристрій значно зменшить трудомісткість в вимірі і отриманні оперативної інформації про рух механічних об'єктів. Введення цього пристрою дозволить значно скоротити час і підвищити точність вимірювань.
The acoustic measuring device of moving of mechanical objects was developed in this diploma project. The basic task of development consists in that, to do this device comfortable in the use, cheap and reliable. The use of this device enables to measure distance or motion of mechanical objects in difficult of access places. A device is given considerably will decrease hand expenses at measuring and receipts of operative information about motion of mechanical objects. Introduction of this device will allow considerably to shorten time, and will promote exactness at measuring.
ПЕРЕЛІК УМОВНИХ ПОЗНАЧЕНЬ І СКОРОЧЕНЬ 6 ВСТУП 7 1 АНАЛІТИЧНА ЧАСТИНА 9 1.1 Загальні теоретичні відомості 9 1.2 Частотний метод вимірювання відстані 10 1.3 Теоретичні відомості про генератори 13 2 ПРОЕКТНА ЧАСТИНА 16 2.1 Вибір та обґрунтування схеми приладу 16 2.2 Вибір частотоміра 27 2.3 Розрахунок елементів пристрою 30 2.4 Опис роботи принципової схеми 44 3 СПЕЦІАЛЬНА ЧАСТИНА 48 3.1 Опис схеми змодельованої в Micro-Cap 7 48 4 БЕЗПЕКА ЖИТТЄДІЯЛЬНОСТІ, ОСНОВИ ОХОРОНИ IIРАЦІ 51 4.1 Значення охорони праці для забезпечення безпечних умов праці 51 4.2 Аналіз потенційних небезпек та шкідливостей виробничої сфери 52 4.3 Електромагнітне й іонізуюче випромінювання 54 4.4 Забезпечення нормальних умов праці 55 4.5 Розрахунок напруги дотику 60 ВИСНОВКИ 63 ПЕРЕЛІК ПОСИЛАНЬ 64
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Єрмаков, М. С. "Біноміальний пристрій для вимірювання частоти." Master's thesis, Сумський державний університет, 2020. https://essuir.sumdu.edu.ua/handle/123456789/81491.

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Пояснювальна записка містить: сторінок 81, рисунка 36, таблиць 21, джерел літератури 12. Об’єктом дослідження роботи є біноміальний пристрій для вимірювання частоти. Мета роботи розробити цифровий частотомір на основі завадостійкого лічильника біноміальних кодів, який здатен працювати в умовах з високим рівнем завад. Вимірювання частоти сигналів дуже часто використовується у виробництві. На результати вимірювання цифрових частотомірів, впливають завади які діють на внутрішні компоненти пристрою, через їх вплив може бути отримане значення яке не відповідає дійсному. Тому актуальним завданням є підвищення завадостійкості компонентів і приладів в цілому. В цифрових частотомірах основним вузлом, що відповідає за точність є лічильник. В більшості випадках в якості лічильника використовують двійкові лічильники, які мають досить прості за будовою, але вони зазвичай не мають пристрою контролю, який здатен виявляти і виправляти помилки, які виникають під впливом електромагнітного випромінювання. Для зменшення впливу завад на результати роботи електронних пристроїв використовують різноманітні методи, серед них: застосування індивідуальних згладжуючих конденсаторів, використання фільтрів, екранування. В даній роботі запропоновано використання лічильника біноміальних кодів, який здатен працювати в умовах з високим рівнем завад. Ключові слова: завадостійкість, біноміальний, лічильники, частота, перешкоди.
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Kukla, Zdeněk. "Vzdálené měřicí systémy a jejich praktické využití." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217602.

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This master’s thesis is dealing with remote measuring systems and their utilization in power engineering. In the first part there are described requirements on an autonomous measuring system and description of AMM and AMR systems. Communicating and data flows working on accurately defined communicating layers are also depicted in this part. The attention is devoted to the possibility of data processing and functions of devices offered by these attributes. In the following part there are described reasons for utilization of remote measuring systems in power engineering and the main advantages of connection of more devices into one unit. After finding of required parametres and functions of systems, a suggestion of terminal device is created in the same way. The suggestion is described in the measuring part with A/D converter, processing in microprocessor, measuring and evaluating alogorithms and attributes of communication of bus used. The last part is devoted to utilization of remote analysis in small power stations in dispersed production. Formation of deformation of voltage, harmonic analysis of signal and its application for data processing are described there. Described analysis was tested on data acquired from a cogeneration unit.
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Books on the topic "Frequency meter"

1

Fulcomer, P. Michael. NBS ambient magnetic field meter for measurement and analysis of low-level power frequency magnetic fields in air. Gaithersburg, MD: U.S. Dept. of Commerce, National Bureau of Standards, 1985.

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Radio frequency & microwave power measurement. London, U.K: P. Peregrinus on behalf of the Institution of Electrical Engineers, 1990.

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Turgel, R. S. NBS phase angle calibration services. Gaithersburg, MD: U.S. Dept. of Commerce, National Bureau of Standards, 1988.

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T͡Syvinskiĭ, V. G. Izmerenie napri͡azheniĭ infrazvukovykh chastot. Moskva: Ėnergoatomizdat, 1985.

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United States. National Bureau of Standards., ed. Time-domain system for identification of the natural resonant frequencies of aircraft relevant to electromagnetic compatibility testing. [Washington, D.C.]: U.S. Dept. of Commerce, National Bureau of Standards, 1988.

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Time-domain system for identificiation of the natural resonant frequencies of aircraft relevant to electromagnetic compatibility testing. [Washington, D.C.]: U.S. Dept. of Commerce, National Bureau of Standards, 1988.

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United States. National Bureau of Standards., ed. Time-domain system for identification of the natural resonant frequencies of aircraft relevant to electromagnetic compatibility testing. [Washington, D.C.]: U.S. Dept. of Commerce, National Bureau of Standards, 1988.

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United States. National Bureau of Standards, ed. Time-domain system for identificiation of the natural resonant frequencies of aircraft relevant to electromagnetic compatibility testing. [Washington, D.C.]: U.S. Dept. of Commerce, National Bureau of Standards, 1988.

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United States. National Bureau of Standards, ed. Time-domain system for identificiation of the natural resonant frequencies of aircraft relevant to electromagnetic compatibility testing. [Washington, D.C.]: U.S. Dept. of Commerce, National Bureau of Standards, 1988.

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Book chapters on the topic "Frequency meter"

1

Weik, Martin H. "frequency meter." In Computer Science and Communications Dictionary, 650. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_7658.

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Huang, Jian. "Design of High Precision Frequency Meter Based on STM32H743." In Advances in Intelligent Systems and Computing, 212–16. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-43306-2_30.

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Minoni, U., G. Scotti, and F. Docchio. "Interferometric Distance Meter Using a Frequency-Modulated Laser Diode." In Applications of Photonic Technology 2, 765–70. Boston, MA: Springer US, 1997. http://dx.doi.org/10.1007/978-1-4757-9250-8_115.

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Bing, Hu, and Liu Xijun. "Design and Research of SOPC Embedded Digital Frequency Meter Based on FPGA." In Communications in Computer and Information Science, 476–82. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-24022-5_76.

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Abiyev, Adalet N. "Frequency Insensitive Digital Sampler and Its Application to the Electronic Reactive Power Meter." In Advances in Computer and Information Sciences and Engineering, 21–26. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-8741-7_5.

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Minoshima, K., T. Tomita, Y. Yamaoka, and H. Matsumoto. "Ultrahigh-Resolution Distance Meter Using a Frequency Comb of a Femtosecond Mode-Locked Laser." In Ultrafast Phenomena XIII, 655–59. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-59319-2_202.

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Eargle, John M. "Sound Pressure Level Produced by a Piston in a Large Baffle at a Distance of 1 Meter as a Function of Amplitude, Radius, and Frequency." In Electroacoustical Reference Data, 82–83. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2027-6_40.

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Guo, Yan, Lan Su, Zhenyu Chen, Zhiguo Wen, Zhenjiang Pang, Zheng Wang, and Jian Du. "The Detection Method of High Frequency Electromagnetic Field for the Malicious Use of Electric Energy Meters." In Application of Intelligent Systems in Multi-modal Information Analytics, 522–28. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-74814-2_74.

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Mashkova, Ekaterina, Sergey Zavjalov, Sergey Volvenko, and Wei Xue. "Evaluation of the Transmission Efficiency of Multi-frequency Signals with an Unknown Initial Phase in the Meteor Burst Communication System." In Springer Proceedings in Physics, 545–53. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-81119-8_60.

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Zhmud, V., A. Goncharenko, and A. V. Liapidevskiy. "Precision frequency meter for basic metrology and displacement measurements." In Testing and Measurement: Techniques and Applications, 125–30. CRC Press, 2015. http://dx.doi.org/10.1201/b18470-28.

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Conference papers on the topic "Frequency meter"

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Zhang Xiao-jun. "Virtual frequency meter." In 2010 3rd International Conference on Advanced Computer Theory and Engineering (ICACTE 2010). IEEE, 2010. http://dx.doi.org/10.1109/icacte.2010.5579711.

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Jaiswal, Shiva Pujan, Vikas Singh Bhadoria, Amit Agrawal, and Jay Singh. "Virtual Flux and Frequency Meter." In 2019 2nd International Conference on Power Energy, Environment and Intelligent Control (PEEIC). IEEE, 2019. http://dx.doi.org/10.1109/peeic47157.2019.8976532.

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Chen, Xuan, Dong Pu, Tianyi Zhang, Zhuangde Jiang, and Xueyong Wei. "A micromechanical resonant optical power meter." In 2017 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium ((EFTF/IFC). IEEE, 2017. http://dx.doi.org/10.1109/fcs.2017.8088993.

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Wang, Daming. "The digital mm-waves frequency meter." In International Conference on Millimeter and Submillimeter Waves and Applications 1994. SPIE, 1994. http://dx.doi.org/10.1117/12.2303260.

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Skrypnyuk, A. I., I. I. Kryval, A. V. Marjenko, O. A. Prysyazhnyuk, V. A. Protsenko, and A. V. Rudkovsky. "Digital frequency meter of microwave range." In 2010 20th International Crimean Conference "Microwave & Telecommunication Technology" (CriMiCo 2010). IEEE, 2010. http://dx.doi.org/10.1109/crmico.2010.5632768.

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Li, Zhiqi, Wei Zhou, Baoying Feng, and Lihu Teng. "An Ultra-high Resolution Phase Difference Measurement meter." In 2007 IEEE International Frequency Control Symposium Joint with the 21st European Frequency and Time Forum. IEEE, 2007. http://dx.doi.org/10.1109/freq.2007.4319200.

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Cheesewright, Robert, and Colin Clark. "Experimental Investigation of the Influence of External Vibrations on Coriolis Mass Flow Meters." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-32210.

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The Coriolis flow meter is basically a vibrating tube device; it is therefore potentially susceptible to disruption by external vibrations transmitted from the environment in which the meter is mounted. The paper reports the findings from a carefully structured experimental study in which the results of both analysis and numerical simulation studies were used to guide the choice of vibration frequencies and the directions and the spatial distributions of the vibrations. The total of eight different meters from five different manufacturers covered a wide range of meter geometries and drive frequencies. In addition to comparisons of the flow rates indicated by the meters with independent measures of the flow rate, all the tests involved the recording of raw signals from the displacement sensors so that the effects of using different techniques to extract the phase relationship between these signals could be investigated. All the tests were performed using cold (room temperature) water as the working fluid. The results of the study show that vibrations at the meter drive frequency caused errors in all meters. Vibrations at other frequencies also caused errors in several meters but these errors appear to be due to the algorithm (implemented in the meter electronics) used to extract the phase difference (the measurand) between the sensor signals. However, the complete study suggests that, by suitable choices of meter mechanical design and of the algorithm used to determine the phase difference, it is possible to make a meter which is unaffected by vibrations at any frequency other than the meter drive frequency (provided only that the meter tube motion produced by the vibration is smaller than that produced by the meter drive). For vibrations at the drive frequency the results show that (in general agreement with the analytical and numerical studies) the magnitude of the error depends on the phase relationship between the imposed vibration and the meter drive. Errors also depend on the spatial distribution of the vibration (e.g. the error is different for the same amplitude of vibration applied uniformly to a meter and applied to one end only of the meter). Methods for reducing drive frequency errors are discussed but it is concluded that it may not be possible to eliminate these errors completely.
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Abramov, M. L., B. D. Borisov, V. A. Vasiliev, and N. A. Kuzyakin. "THE PRECISION FREQUENCY METER WITH F-PLL." In V International Scientific and Technical Conference "Radio Engineering, Electronics and Communication". Omsk Scientific-Research Institute of Instrument Engineering, 2019. http://dx.doi.org/10.33286/978-5-6041917-2-9.242-246.

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Bekker, A., E. Rychkov, and V. Patyukov. "Frequency estimation efficiency improvement of Doppler meter." In 2011 International Siberian Conference on Control and Communications (SIBCON 2011). IEEE, 2011. http://dx.doi.org/10.1109/sibcon.2011.6072617.

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Park, Kyung-Am, Haeman Choi, Younkyun Oh, and Dugki Lee. "Performance Enhancement of Wet Gas Flow Meter." In ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/fedsm2002-31086.

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Wet gas flow meters are used in the gas flow meter manufacturing industries as a reference meter. Also those meters are used for gas flow measurement in many areas. Oil is suggested for sealing fluid in a wet gas flow meter. But water is used because of cheap and easy handling fluid in the industries. In this case, the inlet gas flow rate is different with the outlet gas flow rate because the evaporation of water in the chamber. It is important to estimate the rate of water evaporation and effects on flow measurement error. The humidity of wet gas in the outlet of a flow meter was measured. Flow measurement error due to water evaporation is about 2%. Those results will be useful for flow measurement error reduction of wet gas flow meter using water as sealing fluid. The new developed wet gas meter measured pulse and frequency in encoder through magnetic coupling between the chamber and an encoder. The flow quantity was compensated with adjustment of flow rate error. So the rangeability and error of flow measurement were enhanced remarkably.
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Reports on the topic "Frequency meter"

1

Fulcomer, P. M. NBS ambient magnetic field meter for measurement and analysis of low-level power frequency magnetic fields in air. Gaithersburg, MD: National Bureau of Standards, 1985. http://dx.doi.org/10.6028/nbs.ir.86-3330.

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2

Bowen, Thomas, and Carishma Gokhale-Welch. Behind-the-Meter Battery Storage: Frequently Asked Questions. Office of Scientific and Technical Information (OSTI), August 2021. http://dx.doi.org/10.2172/1812326.

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Taylor, Oliver-Denzil, Amy Cunningham,, Robert Walker, Mihan McKenna, Kathryn Martin, and Pamela Kinnebrew. The behaviour of near-surface soils through ultrasonic near-surface inundation testing. Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/11681/41826.

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Seismometers installed within the upper metre of the subsurface can experience significant variability in signal propagation and attenuation properties of observed arrivals due to meteorological events. For example, during rain events, both the time and frequency representations of observed seismic waveforms can be significantly altered, complicating potential automatic signal processing efforts. Historically, a lack of laboratory equipment to explicitly investigate the effects of active inundation on seismic wave properties in the near surface prevented recreation of the observed phenomena in a controlled environment. Presented herein is a new flow chamber designed specifically for near-surface seismic wave/fluid flow interaction phenomenology research, the ultrasonic near-surface inundation testing device and new vp-saturation and vs-saturation relationships due to the effects of matric suction on the soil fabric.
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Weissinger, Rebecca, and Dana Witwicki. Riparian monitoring of wadeable streams at Courthouse Wash, Arches National Park: Summary report, 2010–2019. Edited by Alice Wondrak Biel. National Park Service, November 2021. http://dx.doi.org/10.36967/nrr-2287907.

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The goal of Northern Colorado Plateau Network (NCPN) riparian monitoring is to determine long-term trends in hydrologic, geomorphic, and vegetative properties of wadeable streams in the context of changes in other ecological drivers, stressors, and processes. This information is intended to provide early warning of resource degradation and determine natural variability of wadeable streams. This report summarizes NCPN monitoring of Courthouse Wash in Arches National Park (NP) from 2010 to 2019. The focus of this report is to (1) present geomorphology and vegetation data from five reaches monitored in Courthouse Wash from 2010 to 2015, and (2) examine patterns in water availability at one monitoring reach from November 2010 to December 2019. Vegetation sampling and geomorphology surveys were suspended in 2016 due to budget cuts; this report presents baseline data for future comparisons. The NCPN has five monitoring reaches located between the inflow of Sevenmile Canyon, a major tributary, and the terminus of Courthouse Wash, at the Colorado River. Two reaches (2, 5) are located in Upper Courthouse Wash, and three (1, 4, 7) in Lower Courthouse Wash. Hydrologic monitoring wells are installed only at Reach 1. During our monitoring period, which included drought years in 2012 and 2018 and a wetter-than-average period from fall 2013 to 2014, groundwater levels showed steep declines corresponding to the start of the growing season each year. Hot, dry summers and falls in 2012, 2018, and 2019 showed the deepest troughs in groundwater levels. Active monsoon years helped elevate summer and fall groundwater levels in 2013 and 2014. Continued monitoring will help us better understand the relationship of climate and water availability at this reach. A geomorphic survey was completed once for reaches 2, 4, and 7, and twice for reaches 5 and 1. Powerful floods during our monitoring period resulted in aggradation of the channel in reaches 5 and 1, which were first surveyed in March 2013. Flooding in September 2013 resulted in an average of 0.24 meters of deposition found in the channel thalweg at Reach 1 in March 2014. Storm events in May 2014 caused additional aggradation. In March 2015, an average of 0.41 meters of deposition was recorded in the channel thalweg at Reach 5, with 0.32 meters of deposition between the vegetation transect headpins compared to the 2013 data. The riparian vegetation recorded at our monitoring reaches is consistent with an open-canopy Fremont cottonwood woodland with a diverse understory. Canopy closure ranged from 29% to 52%. Measurements were sensitive enough to detect a 10% reduction in canopy closure at Reach 5 during a pest infestation in June 2013. Canopy closure subsequently rebounded at the reach by 2015. Total obligate and facultative wetland cover ranged from 7% to 26%. Fremont cottonwood seedlings, saplings, and overstory trees were present at all reaches, indicating good potential for future regeneration of the canopy structure. These data can serve as a baseline for comparison with future monitoring efforts. One area of management concern is that exotic-plant frequency and cover were relatively high in all monitoring reaches. Exotic cover ranged from 2% to 30%. High exotic cover was related to years with high cover of annual brome grasses. High cover of exotic grasses is associated with increased wildfire risk in southwestern riparian systems, which are not well-adapted to fire. Managers should be prepared for this increased risk following wet winters that promote annual brome grass cover. Beaver activity was noted throughout bedrock-constrained reaches in Courthouse Wash. Beaver activity can reduce adjacent woody riparian vegetation cover, but it also contributes to maintaining a higher water table and persistent surface water. Climate change is likely to be an increasingly significant stressor in Courthouse Wash, as hotter, drier conditions decrease water levels and increase drought stress...
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