CN201606056U - Thick film circuit of voltage and current measurement circuit of microsphere focused logging tool - Google Patents
Thick film circuit of voltage and current measurement circuit of microsphere focused logging tool Download PDFInfo
- Publication number
- CN201606056U CN201606056U CN200920274280XU CN200920274280U CN201606056U CN 201606056 U CN201606056 U CN 201606056U CN 200920274280X U CN200920274280X U CN 200920274280XU CN 200920274280 U CN200920274280 U CN 200920274280U CN 201606056 U CN201606056 U CN 201606056U
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- circuit
- thick film
- voltage
- current measurement
- logging tool
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Abstract
The utility model relates to a thick film circuit of a voltage and current measurement circuit of a microsphere focused logging tool. Most voltage and current measurement circuits of the microsphere focused logging tool adopt discrete components, and a bandpass frequency selection circuit is more complicated when resistances and capacitances are selected, the temperature performance and consistency are unstable and the maintenance is not very convenient. The voltage measurement circuit and the current measurement circuit are integrated in a thick film circuit block and respectively comprise a preamplification circuit, a frequency selection bandpass circuit, a proportional reverse phase circuit, a full wave phase sensitive detection circuit and an active low-pass filter circuit. The utility model has high degree of integration, can be better adapted to the harsh downhole high-temperature environment, improves the reliability and stability of an instrument, and greatly reduces the circuit board layout space position; and in addition, the maintenance can also be conveniently carried out by replacing the thick film circuit.
Description
Technical field
The utility model relates to the thick film circuit of a kind of micro-sphere focus logging tool voltage and current measurement circuit.
Technical background
In the background technology, the voltage measurement of micro-sphere focus logging tool and current measurement circuit adopt discrete component to realize mostly, and comparatively loaded down with trivial details when the logical frequency selection circuit of band is selected resistance and electric capacity, temperature performance and uniformity are all unstable, repair also not very convenient.
The utility model content
The technical problem that the utility model solved provides a kind of antijamming capability is strong, degree of integration is high, the easy to maintenance micro-sphere focus logging tool voltage measurement and the thick film circuit of current measurement circuit.
For solving above-mentioned technical problem, the technical scheme that the utility model is taked:
Special character of the present utility model is: described tension measuring circuit and current measurement circuit are integrated in the thick film circuit block, comprise the logical circuit of preposition amplifying circuit, frequency-selecting band, anti-phase circuit, full-wave train phase sensitive detection circuit, active low-pass filter circuit in proportion; The load voltage of described principal current and the AC signal of load current are input to preposition amplifying circuit through transformer coupled the 2nd pin, the 27th pin by thick film circuit respectively, output to the logical circuit of frequency-selecting band of anode input again, signal outputs to anti-phase in proportion circuit and full-wave train phase sensitive detection circuit more respectively, the output signal of anti-phase circuit is transported to full-wave train phase sensitive detection circuit in proportion, and last signal is imported into the load voltage of the principal current of output sphere focusing logging behind the active low-pass filter circuit and the DC simulation signal of load current.
The no-load voltage ratio of above-mentioned transformer is 1: 4, and stage gain is 4.
Compared with prior art, the beneficial effects of the utility model:
Selecting frequency characteristic of the present utility model can design more accurate and more stablely, can be undertaken customized by the steady job frequency, strengthened the antijamming capability of circuit so greatly, uniformity also has bigger change, when bigger variation takes place in load, the logical phase difference with square wave of its frequency-selecting band is less, phase sensitive detection and active step low-pass circuit is also integrated has entered.
The utility model degree of integration height can better adapt to the adverse circumstances of down-hole high temperature, improves the reliability and stability of instrument, dwindles the locus of wiring board fabric swatch greatly; Maintenance is also convenient in addition, changes thick film circuit and gets final product.
Description of drawings
The voltage measurement of Fig. 1 micro-sphere focus logging tool and current measurement schematic circuit;
Micro-sphere focus logging tool voltage measurement of Fig. 2 the utility model and current measurement thick film circuit internal wiring figure;
Micro-sphere focus logging tool voltage measurement of Fig. 3 the utility model and current measurement thick film circuit pin figure.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Referring to Fig. 1～3, the utility model tension measuring circuit and current measurement circuit are integrated in the thick film circuit block, comprise the logical circuit of preposition amplifying circuit, frequency-selecting band, anti-phase circuit, full-wave train phase sensitive detection circuit, active low-pass filter circuit in proportion; The load voltage of described principal current and the AC signal of load current are input to preposition amplifying circuit through transformer coupled the 2nd pin, the 27th pin by thick film circuit respectively, output to the logical circuit of frequency-selecting band of anode input again, signal outputs to anti-phase in proportion circuit and full-wave train phase sensitive detection circuit more respectively, the output signal of anti-phase circuit is transported to full-wave train phase sensitive detection circuit in proportion, and last signal is imported into the load voltage of the principal current of output sphere focusing logging behind the active low-pass filter circuit and the DC simulation signal of load current.
Referring to Fig. 3, thick film circuit block is shaped as rectangular metal-back, include 28 needle-like pins, branch 2 comes the both sides of thick film circuit block, the 1st of thick film circuit SC5674-002,28 pin are+input of 15V voltage, the 12nd, 17 pin are-input of 15V voltage, the 7th, 18,23 pin are power supply ground, the 2nd pin is the voltage input end of principal current, the 27th pin is the current input terminal of principal current, the 10th pin is the input of microballoon standard logic square wave, the 14th pin is the dc output end Vo of the voltage measurement of principal current, the 15th pin is the dc output end Io of the current measurement of principal current, the 11st, 16,19 pin are empty pin, other is the 2nd years old, 3,4,5,6,8,9,20,21,22,24,25,26,27 pin are the port of external precision resistance, are used for doing the gain adjustment of circuit and the parameter adjustment of the logical circuit of band (as with logical centre frequency fo, bandwidth B, quality factor Q, gain etc.).
Claims (2)
1. the thick film circuit of micro-sphere focus logging tool voltage and current measurement circuit, it is characterized in that: described tension measuring circuit and current measurement circuit are integrated in the thick film circuit block, comprise the logical circuit of preposition amplifying circuit, frequency-selecting band, anti-phase circuit, full-wave train phase sensitive detection circuit, active low-pass filter circuit in proportion; The load voltage of described principal current and the AC signal of load current are input to preposition amplifying circuit through transformer coupled the 2nd pin, the 27th pin by thick film circuit respectively, output to the logical circuit of frequency-selecting band of anode input again, signal outputs to anti-phase in proportion circuit and full-wave train phase sensitive detection circuit more respectively, the output signal of anti-phase circuit is transported to full-wave train phase sensitive detection circuit in proportion, and last signal is imported into the load voltage of the principal current of output sphere focusing logging behind the active low-pass filter circuit and the DC simulation signal of load current.
2. the thick film circuit of a kind of micro-sphere focus logging tool voltage according to claim 1 and current measurement circuit is characterized in that: the no-load voltage ratio of described transformer is 1: 4, and stage gain is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920274280XU CN201606056U (en) | 2009-12-14 | 2009-12-14 | Thick film circuit of voltage and current measurement circuit of microsphere focused logging tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920274280XU CN201606056U (en) | 2009-12-14 | 2009-12-14 | Thick film circuit of voltage and current measurement circuit of microsphere focused logging tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201606056U true CN201606056U (en) | 2010-10-13 |
Family
ID=42950762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920274280XU Expired - Lifetime CN201606056U (en) | 2009-12-14 | 2009-12-14 | Thick film circuit of voltage and current measurement circuit of microsphere focused logging tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201606056U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094621B (en) * | 2009-12-14 | 2014-04-09 | 西安威尔罗根能源科技有限公司 | Thick film circuit of voltage and current measuring circuit of micro-spherically focused logging instrument |
-
2009
- 2009-12-14 CN CN200920274280XU patent/CN201606056U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094621B (en) * | 2009-12-14 | 2014-04-09 | 西安威尔罗根能源科技有限公司 | Thick film circuit of voltage and current measuring circuit of micro-spherically focused logging instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Thick film circuit of voltage and current measuring circuit of micro-spherically focused logging instrument Effective date of registration: 20111221 Granted publication date: 20101013 Pledgee: China Minsheng Banking Corp Xi'an branch Pledgor: Xi'an Weier Rogan Energy Technology Co., Ltd.| Xu Peng Registration number: 2011990000503 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20120815 Granted publication date: 20101013 Pledgee: China Minsheng Banking Corp Xi'an branch Pledgor: Xi'an Weier Rogan Energy Technology Co., Ltd.| Xu Peng Registration number: 2011990000503 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Thick film circuit of voltage and current measuring circuit of micro-spherically focused logging instrument Effective date of registration: 20121218 Granted publication date: 20101013 Pledgee: China Minsheng Banking Corp Xi'an branch Pledgor: Xi'an Weier Rogan Energy Technology Co., Ltd.| Xu Peng Registration number: 2012990000813 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101013 Effective date of abandoning: 20091214 |
|
| RGAV | Abandon patent right to avoid regrant | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20161102 Granted publication date: 20101013 Pledgee: China Minsheng Banking Corp Xi'an branch Pledgor: Xi'an Weier Rogan Energy Technology Co., Ltd.| Xu Peng Registration number: 2012990000813 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model |