SU742815A1 - Physical value measuring method - Google Patents
Physical value measuring method Download PDFInfo
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- SU742815A1 SU742815A1 SU782600288A SU2600288A SU742815A1 SU 742815 A1 SU742815 A1 SU 742815A1 SU 782600288 A SU782600288 A SU 782600288A SU 2600288 A SU2600288 A SU 2600288A SU 742815 A1 SU742815 A1 SU 742815A1
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- measuring method
- value measuring
- physical value
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Description
(54) СПОСОБ ИЗМЕРЕНИЯ ФИЗИЧЕСКИХ ВЕЛИЧИН(54) METHOD OF MEASURING PHYSICAL VALUES
1one
Изобретение относитс к электроизмерительной технике и может найти применение при измерении физических величин, содержащих аддитивную помеху в виде посто нной или периодической переменной составл ющих .The invention relates to electrical measuring technique and can be used in the measurement of physical quantities containing additive interference in the form of a constant or periodic variable component.
Известен способ измерени физических величин, содержащих посто нную составл ющую и наложенную на нее периодическую переменную, котора выступает в качестве помехи. Дл обеспечени / высокой точности измерени врем измерени выбирают равным (кратным) периоду помехи 1.There is a method for measuring physical quantities containing a constant component and a periodic variable superimposed on it, which acts as an interference. For the provision of high measurement accuracy, the measurement time is chosen to be equal to (multiple) the period of interference 1.
Данный способ имеет ограниченные возможности и используетс лищь в тех случа х , когда крива переменной составл ющей имеет минимально возможное число переходов через нулевое значение за период и расположена симметрично относительно каждого перехода.This method has limited capabilities and is used only in cases where the variable component curve has the minimum possible number of transitions through a zero value over a period and is located symmetrically with respect to each transition.
Известен также способ измерени физических величин, в котором интервал интегрировани разбивают на два равных полуинтервала , длительностью Т , начало первого из которых произвольно, а начало второго сдвигают относительно конца первого на отрезок времени, значение которого наход т в процессе измерени путем анализа на совпадение во времени момента, отсто щего от времени перехода переменной составл ющей через нуль на значение, равное измеренному отрезку времени Тз между границей первого полуинтервала и ближайщим переходом через нуль, и момента достижени текущим значением сигнала уровн Р г, равного разности между удвоенным значением сигнала в момент перехода переменной составл ющей через нуль РО и значе10 нием сигнала Р на границе первого полуинтервала 2.There is also known a method for measuring physical quantities, in which the integration interval is divided into two equal half-intervals, duration T, the beginning of the first of which is arbitrary, and the beginning of the second is shifted relative to the end of the first by an interval of time, the value of which is found during measurement by analyzing for coincidence of the moment separated from the transition time of the variable component through zero by a value equal to the measured time interval Tz between the boundary of the first half-interval and the nearest transition through only when the current value of the signal reaches the level P g equal to the difference between the double value of the signal at the moment of transition of the variable component through zero PO and the value of the signal P at the border of the first half-interval 2.
Однако недостаточность услови нахождени длительности паузы между полуинтервалами интегрировани приводит к по влению методической погрещности.However, the insufficiency of the condition for finding the length of the pause between the half-intervals of integration leads to the appearance of methodical error.
Цель изобретени - повыщение точности . The purpose of the invention is to increase accuracy.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782600288A SU742815A1 (en) | 1978-04-05 | 1978-04-05 | Physical value measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782600288A SU742815A1 (en) | 1978-04-05 | 1978-04-05 | Physical value measuring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU742815A1 true SU742815A1 (en) | 1980-06-25 |
Family
ID=20757791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU782600288A SU742815A1 (en) | 1978-04-05 | 1978-04-05 | Physical value measuring method |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU742815A1 (en) |
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1978
- 1978-04-05 SU SU782600288A patent/SU742815A1/en active
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