FIELD: electric engineering equipment.
SUBSTANCE: device can be used for measuring electric parameters of two-terminal devices used as physical process detectors (temperature, pressure, level of loose and liquid matters and et cetera) at transportation vehicles and in systems for measuring level of filling of rocket-space equipment. Device for measuring level of dielectric matter has first and second measuring inputs, sinusoidal voltage source, equivalent circuit preset unit, standard which has first output connected with first input of switching unit, current-to-voltage converter, scaling amplifier and analog-to-digital converter. Switching unit is made to be multi-channel one, which has first measuring, input with second output of standard and with output of sinusoidal voltage generator. Control input of the latter is connected with first output of frequency-control unit. Measuring inputs starting from second to (n+1) are connected with corresponding inputs of switching unit which has output connected with first outputs of electric capacity and active resistance calculators through current-to-voltage converter, scale amplifier and analog-to-digital converter all connected in series. It is also connected with first input of measurement control input which has outputs connected with control inputs of switching unit, of scale amplifier and analog-to-digital converter as well as with first input of frequency control unit and with second inputs of electric capacity and active resistance calculators. Control input of measurement control unit is connected with control output of mode control unit which has outputs connected with second input of frequency control unit, with equivalent circuit setting unit, with first input of electric capacitance total increment calculator, with first input of level calculator, with first input of electric capacitance current increment calculator and with input switching control unit. Output of the latter is connected with second control input of switch unit. Output electric capacitance calculator is connected with second input of calculator of current increment in electric capacitance. Output of the latter is connected with second input of level calculator. Third and fourth inputs of electric capacitance and active resistance calculators are connected with output equivalent circuit preset unit and with second output of frequency control unit. Output of calculator of current increment in electric capacitance is connected with third input of level calculator. Output of the latter as well as outputs of active resistance calculator and switch control unit have to be outputs of the device.
EFFECT: improved precision of measurement; improved manufacturability; improved efficiency of measurement.
6 dwg
Title | Year | Author | Number |
---|---|---|---|
DEVICE TO MEASURE LEVEL OF DIELECTRIC SUBSTANCE | 2012 |
|
RU2499232C1 |
DEVICE TO MEASURE LEVEL OF DIELECTRIC SUBSTANCE | 2012 |
|
RU2499231C1 |
DEVICE FOR DETERMINING THE LEVEL OF DIELECTRIC SUBSTANCE | 2016 |
|
RU2650745C1 |
APPARATUS FOR DETERMINING PARAMETERS OF TWO-TERMINAL DEVICE | 2014 |
|
RU2587647C2 |
DEVICE FOR DETERMINING PARAMETERS OF TWO-TERMINAL CIRCUIT | 2003 |
|
RU2262115C2 |
METHOD FOR DETERMINATION OF DIELECTRIC MATERIAL LEVEL | 2016 |
|
RU2642166C2 |
APPARATUS FOR DETERMINING PARAMETERS OF TWO-TERMINAL DEVICE | 2011 |
|
RU2458353C1 |
METHOD FOR DETERMINING LEVEL OF DIELECTRIC SUBSTANCE | 2011 |
|
RU2488783C1 |
DIELECTRIC SUBSTANCE LEVEL MEASURING DEVICE | 2010 |
|
RU2445584C1 |
METHOD OF MEASURING LEVEL OF DIELECTRIC MATTER | 2003 |
|
RU2262669C2 |
Authors
Dates
2005-10-20—Published
2003-10-01—Filed