SU886853A1 - Device for measuring soil moisture-content - Google Patents
Device for measuring soil moisture-content Download PDFInfo
- Publication number
- SU886853A1 SU886853A1 SU802975914A SU2975914A SU886853A1 SU 886853 A1 SU886853 A1 SU 886853A1 SU 802975914 A SU802975914 A SU 802975914A SU 2975914 A SU2975914 A SU 2975914A SU 886853 A1 SU886853 A1 SU 886853A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- wire
- signal generator
- measurement unit
- measuring
- pieces
- Prior art date
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
отрезки провода установлены в характерных участках орошаемого пол .wire segments are installed in characteristic areas of the irrigated floor.
На чертеже представлена схема выполнени устройства.The drawing shows a diagram of the device.
Устройство состоит из генератора сигналов I, выход которого подключен к однопроводной линии 2, размещенной над контролируемым полем или на поливной установке , конец которой заземлеи посредством нагрузки 3 и контрольного нровода 4, ненодви кные контакты которого через многопознционный переключатель 5 электрически соединены с блоком измерений 6.The device consists of a signal generator I, the output of which is connected to a single-wire line 2 placed above a controlled field or on a irrigation installation, the end of which is grounded through a load 3 and a test wire 4, whose non-contact contacts are electrically connected to measuring unit 6 via a multi-cognitive switch 5.
Устройство работает следующим образом .The device works as follows.
Генератор 1 сигналов возбуждает в одпопроводной линии 2 электромагнитные волны, тип которых определ етс характером нагрузки 6. Ьследствие малого затуханн электромагнитных волн в воздухе они распростран ютс вдоль всей линии 2 и, проника в почву, навод т в контрольном проводе 4 потенциал сигнала, нараметры которого снимаютс в различных точках провода 4 в последовательности, определ емой многопозидионным переключателем 5, и подаютс на вход блока 6 измерений , ьлок 6 измерений контролирует момент нахождени узла электромагнитной волны на глубине расположени контрольного провода 4 в месте контакта - либо по минимуму амплитуды, либо при фиксации момента смены фазы на 180. При изменении влажности почвы происходит смещение картины электромагнитных волн в вертикальном направлении. Величина изменени частоты генератора 1, необходима дл возвращени узла волн в прежнее положепие, определ ет степень изменени влажности.The signal generator 1 excites electromagnetic waves in the one-wire line 2, the type of which is determined by the nature of the load 6. As a result of small attenuated electromagnetic waves in the air, they propagate along the entire line 2 and, through penetration into the soil, induce a potential in the control wire 4 are removed at various points of the wire 4 in the sequence determined by the multi-position switch 5, and are fed to the input of the measurement unit 6, the measurement unit 6 controls the moment when the electromagnetic unit is located us to control the depth of the wire 4 in the point of contact - either minimum amplitude, either at the time the fixing phase shift at 180. When the soil moisture content change is a shift pattern of electromagnetic waves in the vertical direction. The magnitude of the change in the frequency of the oscillator 1, which is necessary to return the node of the waves to its former position, determines the degree of change in humidity.
Предлагаемым зстройством можно измер ть влажность почвы различных участков орошаемого пол больщого объема. Применение устройства обеспечивает упрощение процесса измерений вследствие устранени процедуры механического поиска узла сто щих электромагнитных волн и повыщение точности контрол влажности орощаемого пол вследствие обеспечени дифференциально-интегрального характера съема параметров влажности при использовании одного устройства.The proposed device can measure the soil moisture of different areas of a large irrigated floor. The use of the device simplifies the measurement process due to the elimination of the procedure of mechanical search for a node of standing electromagnetic waves and an increase in the accuracy of moisture control of the irrigated field due to the differential-integral character of the removal of moisture parameters when using a single device.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802975914A SU886853A1 (en) | 1980-05-28 | 1980-05-28 | Device for measuring soil moisture-content |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802975914A SU886853A1 (en) | 1980-05-28 | 1980-05-28 | Device for measuring soil moisture-content |
Publications (1)
Publication Number | Publication Date |
---|---|
SU886853A1 true SU886853A1 (en) | 1981-12-07 |
Family
ID=20915493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU802975914A SU886853A1 (en) | 1980-05-28 | 1980-05-28 | Device for measuring soil moisture-content |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU886853A1 (en) |
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1980
- 1980-05-28 SU SU802975914A patent/SU886853A1/en active
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