SU145788A1 - Device for determining the strength of natural ice cover by the speed of propagation of elastic vibrations in it - Google Patents
Device for determining the strength of natural ice cover by the speed of propagation of elastic vibrations in itInfo
- Publication number
- SU145788A1 SU145788A1 SU722936A SU722936A SU145788A1 SU 145788 A1 SU145788 A1 SU 145788A1 SU 722936 A SU722936 A SU 722936A SU 722936 A SU722936 A SU 722936A SU 145788 A1 SU145788 A1 SU 145788A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- propagation
- strength
- determining
- speed
- ice cover
- Prior art date
Links
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Description
Известные устройства дл определени прочности естественного лед ного покрова по скорости распространени в нем упругих колебании , содержаище два разнесенных на заданное рассто 1{ие приемника с усилител ми и регистратор, имеют сложную методику проверки. Она требует применени громоздкой измерительной аппаратуры, так как дл определени момента прихода упругих колебаний к приемникам необходимо производить непрерывную регистрацию сигналов на движущуюс фотобумагу или фотопленку.The known devices for determining the strength of natural ice cover by the speed of propagation of elastic oscillations in it, containing two spaced apart receivers with amplifiers and a recorder, have a complex testing technique. It requires the use of bulky measuring equipment, since in order to determine the moment of arrival of elastic vibrations to the receivers, it is necessary to continuously record signals on moving photographic paper or photographic film.
Предлагаемое устройство отличаетс тем, что регистратор выполнен из последовательно подключенных к усилител м блока формировани отрицательного импульса напр жени пр моугольной формы, длительность которого пропорциональна разности времен прихода упруги .х колебаний к приемникам, генератора марок времени и элоктронного сметмпка, снабженного визуальным индикатором.The proposed device is characterized in that the recorder is made of series-connected negative voltage pulse amplifiers of a rectangular shape, the duration of which is proportional to the difference in arrival times of elastic oscillations to receivers, time stamp generator and electronic meter equipped with a visual indicator.
.казанное отличие позволило значительно упрости1ь .методику проверки.The above distinction made it possible to significantly simplify the verification procedure.
Па чертеже изображена принципиальна блок-схема предлагаемого устропсгва.Pa the drawing shows a schematic block diagram of the proposed device.
Усгройство состоит из регистратора-указател времени прихода упругих колебаний и приемников этих колебаний, расположенных на некотором рассто нии друг от друга. В качестве приемников могут примен тьс любые преобразователи механических колебание в электрические , например пьезоэлектрические.The device consists of a recorder-index of the time of arrival of elastic oscillations and receivers of these oscillations, located at some distance from each other. Any transducers of mechanical oscillation into electrical, for example, piezoelectric, can be used as receivers.
Определение разности времени прихода упругой во.тны достигаетс в регистраторе-указателе путем измерени длительности отрицате . 1ЫГОГО пр моугольного импульса напр жени , передний фронт которого образуетс в момент прихода волны к первому приемнику, .-i задний-в момент прихода волны к второму приемнику.The determination of the arrival time difference of the elastic wave is achieved in the index-recorder by measuring the duration of the negative. The first rectangular voltage pulse, the leading front of which is formed at the moment the wave arrives at the first receiver, i.e.
Устройство содержит два трехкаскадных усилител 1 и 2, блок 3 (Ьормировани отрицательного импульса напр жени пр моугольнойThe device contains two three-stage amplifiers 1 and 2, block 3 (normalization of the negative voltage pulse
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU722936A SU145788A1 (en) | 1961-03-20 | 1961-03-20 | Device for determining the strength of natural ice cover by the speed of propagation of elastic vibrations in it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU722936A SU145788A1 (en) | 1961-03-20 | 1961-03-20 | Device for determining the strength of natural ice cover by the speed of propagation of elastic vibrations in it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU145788A1 true SU145788A1 (en) | 1961-11-30 |
Family
ID=48301301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU722936A SU145788A1 (en) | 1961-03-20 | 1961-03-20 | Device for determining the strength of natural ice cover by the speed of propagation of elastic vibrations in it |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU145788A1 (en) |
-
1961
- 1961-03-20 SU SU722936A patent/SU145788A1/en active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FR1163092A (en) | Device for detecting defects and the like by means of sound or ultrasonic waves | |
| GB1402833A (en) | Position determination device | |
| JPS5523476A (en) | Detection circuit device for ultrasonic propagation time | |
| GB363319A (en) | Improvements in or relating to distance or depth finding apparatus | |
| FR72083E (en) | Ferromagnetism detection and measurement device | |
| FR1140922A (en) | Improvements in methods and apparatus for measuring the propagation speed of waves, especially sound waves | |
| SU145788A1 (en) | Device for determining the strength of natural ice cover by the speed of propagation of elastic vibrations in it | |
| FR1178796A (en) | Signal transmission device and circuits | |
| FR2396283A1 (en) | DEVICE FOR MEASURING THE DENSITY OF GASEOUS MEDIA | |
| FR1193687A (en) | Signal transmission device | |
| JPS52104263A (en) | Supersonic liquid level indicator | |
| SU127749A1 (en) | The way to check the nuclear resonance magnetometer | |
| SU79224A1 (en) | Mechanical accelerograph | |
| SU135239A1 (en) | Device for measuring parameters of sea waves | |
| FR1105711A (en) | Electronic device for thickness measurement by ultrasonic waves | |
| FR2260780A1 (en) | Liquid flow velocity measuring instrument - uses electro-acoustic devices to determine direction and intensity of velocity | |
| FR1181981A (en) | Device for measuring the repetition frequency of recurrent pulses | |
| SU134920A1 (en) | Pulsed Ultrasonic Thermal Anemometer | |
| FR1126164A (en) | Electric signal compressor-expander device | |
| FR1163269A (en) | Recording device for measuring instruments, and accelerometer equipped with this device | |
| FR1157132A (en) | Electronic device for transmitting and receiving start-stop signals | |
| FR1197824A (en) | Indicating or recording device for measuring instruments and scales | |
| JPS5253442A (en) | Detector for physical states | |
| FR1204832A (en) | Electrolytic sensor for measuring devices and sound amplification | |
| FR1156950A (en) | Ferromagnetism detection and measurement device |