US 7,401,513 B2
Electronic method and system for detection of conducting or dielectric medium with dielectric constant higher than that of air
Zbigniew Szela, Zabratowka (Poland); Kazimierz Zajac, Rzeszow (Poland); Wlodzimierz Kalita, Rzeszow (Poland); Zbigniew Lasota, Warsaw (Poland); and Lasota Michal, Warsaw (Poland)
Assigned to Elektroniczny Zakkad Innowacyjno-Wdrozeniowy “Hybres” S.p. z o.o, Rzeszòw (Poland)
Appl. No. 10/545,129
PCT Filed Jan. 21, 2004, PCT No. PCT/PL2004/000003
§ 371(c)(1), (2), (4) Date Aug. 08, 2005,
PCT Pub. No. WO2004/070774, PCT Pub. Date Aug. 19, 2004.
Claims priority of application No. 358634 (PL), filed on Feb. 07, 2003.
Prior Publication US 2006/0106547 A1, May 18, 2006
Int. Cl. G01F 23/26 (2006.01)
U.S. Cl. 73—304C 10 Claims
OG exemplary drawing
 
8. An electronic system for a detection of a presence of a conducting, or dielectric environment with a dielectric constant higher than that of air comprising
a microprocessor control system (US) having a voltage input Ucc;
a charging capacitor (Cp) electrically connected to the microprocessor control system (US);
an electronic measurement key (K1); and
a measurement capacitor (Cx) depending on a surrounding, conductive or dielectric, environment, and having a first polarity connected to said electronic measurement key (K1), wherein the electronic measurement key (K1) and the measurement capacitor (Cx) form a measuring sensor (CP);
a measurement line (Pn) connecting the microprocessor control system (US) to the electronic measurement key (K1) and constituting a charging-current output of the measurement capacitor (Cx) as well as the discharge-current input of the charging capacitor (CP);
a first charging line (I/S) connecting the microprocessor control system to a first polarity of the charging capacitor (Cp) and to the electronic measurement key (K1), and constituting the charging-current output of the charging capacitor (Cp) as well as an input for voltage testing during discharging of the charging capacitor (Cp);
a second charging line (CEN) connecting the microprocessor control system (US) to a second polarity of the charging capacitor (Cp), and constituting both the charging-current input for capacitor (Cp) and discharge-current output of said capacitor, wherein the second charging line (CEN) is also indirectly connected through the charging capacitor (Cp) with the electronic measurement key (K1),
a common ground line connecting the microprocessor control system (US) to a second polarity of the measurement capacitor (Cx) and wherein the microprocessor control system (US) is connected through the measurement capacitor (Cx) with the electronic measurement key (K1).