CN102094624B - Power supply circuit of main current for microsphere focused logging - Google Patents
Power supply circuit of main current for microsphere focused logging Download PDFInfo
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- CN102094624B CN102094624B CN 200910247007 CN200910247007A CN102094624B CN 102094624 B CN102094624 B CN 102094624B CN 200910247007 CN200910247007 CN 200910247007 CN 200910247007 A CN200910247007 A CN 200910247007A CN 102094624 B CN102094624 B CN 102094624B
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Abstract
The invention relates to a power supply circuit of a main current for microsphere focused logging. When the microsphere focused logging resistivity is a high resistance, an old-style unipolar frequency-selecting band pass filtering circuit easily generates self-oscillation, voltage signals and current signals of the measured main current do not have stable values, and the fluctuation is extremely great. The power supply circuit comprises a capacitor C3, a first level positive input second-order band-pass circuit, a second level positive input second-order band-pass circuit, a resistance network and a power drive circuit, wherein the resistance network consists of a resistor R11 and a resistor R12 which are connected in series; and the power drive circuit consists of a capacitor C8, an operational amplifier U3 and a power operational amplifier U4. The power supply circuit has more precise and more stable frequency-selecting characteristics and greatly improves the anti-jamming capability of circuits, so that the self-oscillation is difficult to generate in the circuit; the output impedance of a main current signal is improved and the high amplification factor of the main current can be regulated by multiple poles; and the phase difference of the main current and a shielding current is small when the load is greatly changed.
Description
Technical field
The present invention relates to a kind of power supply circuits of microsphere focused logging main current.
Technical background
When sphere focusing logging resistivity is high resistant (greater than 2000Qm), old-fashioned one pole frequency-selecting bandpass filtering circuit easily produces self-oscillation, the voltage and current signal of the principal current that records of testing circuit is unsettled value like this, it is large especially to fluctuate, even negative value (sphere focusing logging resistivity does not have negative value usually) can occur; Principal current is larger because of the phase difference of the variation of load and bucking current in addition.
Summary of the invention
Technical problem solved by the invention provides a kind of when sphere focusing logging resistivity is high resistant, has the preferably power supply circuits of the microsphere focused logging main current of antijamming capability.
For solving above-mentioned technical problem, the technical scheme that the present invention takes:
Special character of the present invention is: described power supply circuits comprise capacitor C 3, first order positive input second order band-pass circuit, second level positive input second order band-pass circuit, resistor network, power driving circuit, resistor network is composed in series by resistance R 11 and resistance R 12, and the power drive circuit is comprised of capacitor C 8, operational amplifier U3 and power operational amplifier U4; The preposition amplifying signal of described microballoon passes through capacitor C 3 couplings, delivers to the logical circuit of first order positive input second order band, and the logical circuit of second level positive input second order band is delivered in output, signal is exported by three the tunnel again: the voltage sense line of microballoon principal current is delivered in one tunnel output; One road output resistance network is outputed to the previous stage of microballoon bucking current amplifier by the microballoon principal current component that it is suitable that it will gain; One the tunnel outputs to the power drive circuit through coupling transformer T1, carries out the output of microsphere focused logging main current by resistance R 13 and resistance R 14 again.
Above-mentioned capacitor C 3 adopts high temperature resistant tantalum electric capacity, and capacitor C 4, capacitor C 5, capacitor C 6, capacitor C 7 adopt the low drift of high temperature resistant high technology ceramics electric capacity, and capacitor C 8 adopts high temperature resistant coupling capacitance.
Above-mentioned resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, resistance R 10, resistance R 11, resistance R 12 adopt high temperature resistant precision resistance.
Compared with prior art, beneficial effect of the present invention:
1) selecting frequency characteristic is more accurate and more stable, has greatly strengthened the antijamming capability of circuit, and circuit just is difficult for producing self-oscillation;
2) increased the output impedance of principal current signal;
3) can divide the high-amplification-factor of multipole adjustment principal current;
When 4) larger variation occured in load, the phase difference of principal current and bucking current was little.
Description of drawings
Fig. 1 is circuit theory diagrams of the present invention.
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, the present invention is with the logical logical circuit of two-stage positive input second order band that is replaced with of one pole frequency-selecting band of the principal current of existing sphere focusing logging, the present invention includes capacitor C 3, first order positive input second order band-pass circuit, second level positive input second order band-pass circuit, resistor network, power driving circuit, the preposition amplifying signal of microballoon is by capacitor C 3 couplings, deliver to the logical circuit of first order positive input second order band, the logical circuit of second level positive input second order band is delivered in output, signal is exported by three the tunnel again: the voltage sense line of microballoon principal current is delivered in one tunnel output; One road output resistance network is outputed to the previous stage of microballoon bucking current amplifier by the microballoon principal current component that it is suitable that it will gain; One the tunnel outputs to the power drive circuit through coupling transformer T1, carries out the output of microsphere focused logging main current by resistance R 13 and resistance R 14 again.
First order positive input second order band-pass circuit is comprised of resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, capacitor C 4, capacitor C 5 and operational amplifier U1, and operational amplifier U1 adopts the OP07AZ/883 model.
Second level positive input second order band-pass circuit is comprised of with capacitor C 7 and operational amplifier U2 with resistance R 10, capacitor C 6 resistance R 6, resistance R 7, resistance R 8, resistance R 9, and operational amplifier U2 adopts the OP07AZ/883 model.
Resistor network is composed in series by resistance R 11 and resistance R 12, and being provides a certain proportion of microballoon to focus on principal current voltage to external control, and its ratio is: R12/ (R11+R12) Vo, wherein Vo is that microballoon focuses on principal current voltage.
The power drive circuit is comprised of capacitor C 8, operational amplifier U3 and power operational amplifier U4, and power operational amplifier U4 adopts the BI-823 model.
Capacitor C 3 adopts high temperature resistant tantalum electric capacity, and capacitor C 4, capacitor C 5, capacitor C 6, capacitor C 7 adopt the low drift of high temperature resistant high technology ceramics electric capacity, and capacitor C 8 adopts high temperature resistant coupling capacitance.
Resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, resistance R 10, resistance R 11, resistance R 12 adopt high temperature resistant precision resistance.
Claims (3)
1. the power supply circuits of a microsphere focused logging main current, it is characterized in that: described power supply circuits comprise capacitor C 3, first order positive input second order band-pass circuit, second level positive input second order band-pass circuit, resistor network, power driving circuit, resistor network is composed in series by resistance R 11 and resistance R 12, and the power drive circuit is comprised of capacitor C 8, operational amplifier U3 and power operational amplifier U4; The preposition amplifying signal of described microballoon passes through capacitor C 3 couplings, delivers to the logical circuit of first order positive input second order band, and the logical circuit of second level positive input second order band is delivered in output, signal is exported by three the tunnel again: the voltage sense line of microballoon principal current is delivered in one tunnel output; One road output resistance network is outputed to the previous stage of microballoon bucking current amplifier by the microballoon principal current component that it is suitable that it will gain; One the tunnel outputs to the power drive circuit through coupling transformer T1, carries out the output of microsphere focused logging main current by resistance R 13 and resistance R 14 again;
First order positive input second order band-pass circuit is comprised of resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, capacitor C 4, capacitor C 5 and operational amplifier U1, and operational amplifier U1 adopts the OP07AZ/883 model;
Second level positive input second order band-pass circuit is comprised of with capacitor C 7 and operational amplifier U2 with resistance R 10, capacitor C 6 resistance R 6, resistance R 7, resistance R 8, resistance R 9;
Resistor network is composed in series by resistance R 11 and resistance R 12, and being provides a certain proportion of microballoon to focus on principal current voltage to external control, and its ratio is: R12/ (R11+R12) Vo, and wherein Vo is that microballoon focuses on principal current voltage;
The power drive circuit is comprised of capacitor C 8, operational amplifier U3 and power operational amplifier U4, and power operational amplifier U4 adopts the BI-823 model.
2. the power supply circuits of a kind of microsphere focused logging main current according to claim 1, it is characterized in that: described capacitor C 3 adopts high temperature resistant tantalum electric capacity, capacitor C 4, capacitor C 5, capacitor C 6, capacitor C 7 adopt the low drift of high temperature resistant high technology ceramics electric capacity, and capacitor C 8 adopts high temperature resistant coupling capacitance.
3. the power supply circuits of a kind of microsphere focused logging main current according to claim 1 is characterized in that: described resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, resistance R 10, resistance R 11, the high temperature resistant precision resistance of resistance R 12 employings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910247007 CN102094624B (en) | 2009-12-14 | 2009-12-14 | Power supply circuit of main current for microsphere focused logging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910247007 CN102094624B (en) | 2009-12-14 | 2009-12-14 | Power supply circuit of main current for microsphere focused logging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102094624A CN102094624A (en) | 2011-06-15 |
| CN102094624B true CN102094624B (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910247007 Expired - Fee Related CN102094624B (en) | 2009-12-14 | 2009-12-14 | Power supply circuit of main current for microsphere focused logging |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3900733A (en) * | 1972-01-24 | 1975-08-19 | Schlumberger Technology Corp | Methods and apparatus for measuring the density of geological formations |
| AR241167A2 (en) * | 1983-12-12 | 1991-12-30 | Hallburton Company | Automatic control system for acoustic logging |
| CN1077775A (en) * | 1992-04-15 | 1993-10-27 | 胜利石油管理局测井公司 | Full-electrode logging method |
| CN1118403A (en) * | 1994-09-02 | 1996-03-13 | 西安石油学院 | Non-focus electric current lateral well logging instrument |
| EP1218757A1 (en) * | 2000-07-28 | 2002-07-03 | Mesatronic | Method for making a card with multiple contact tips for testing microsphere integrated circuits, and testing device using said card |
| CN1794013A (en) * | 2005-12-30 | 2006-06-28 | 聂国柱 | High resolution ratio static natural potential well logging instrument and its measuring method |
| CN101235715A (en) * | 2007-02-02 | 2008-08-06 | 邓霞 | Logging method for recognizing hydrocarbon reservoir in air medium and instrument |
| CN201606059U (en) * | 2009-12-14 | 2010-10-13 | 西安威尔罗根能源科技有限公司 | Power supply circuit of microsphere focused logging main current |
-
2009
- 2009-12-14 CN CN 200910247007 patent/CN102094624B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3900733A (en) * | 1972-01-24 | 1975-08-19 | Schlumberger Technology Corp | Methods and apparatus for measuring the density of geological formations |
| AR241167A2 (en) * | 1983-12-12 | 1991-12-30 | Hallburton Company | Automatic control system for acoustic logging |
| CN1077775A (en) * | 1992-04-15 | 1993-10-27 | 胜利石油管理局测井公司 | Full-electrode logging method |
| CN1118403A (en) * | 1994-09-02 | 1996-03-13 | 西安石油学院 | Non-focus electric current lateral well logging instrument |
| EP1218757A1 (en) * | 2000-07-28 | 2002-07-03 | Mesatronic | Method for making a card with multiple contact tips for testing microsphere integrated circuits, and testing device using said card |
| CN1794013A (en) * | 2005-12-30 | 2006-06-28 | 聂国柱 | High resolution ratio static natural potential well logging instrument and its measuring method |
| CN101235715A (en) * | 2007-02-02 | 2008-08-06 | 邓霞 | Logging method for recognizing hydrocarbon reservoir in air medium and instrument |
| CN201606059U (en) * | 2009-12-14 | 2010-10-13 | 西安威尔罗根能源科技有限公司 | Power supply circuit of microsphere focused logging main current |
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| Publication number | Publication date |
|---|---|
| CN102094624A (en) | 2011-06-15 |
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