CN206557640U - The voltage follow module of geological mapping device - Google Patents
The voltage follow module of geological mapping device Download PDFInfo
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- CN206557640U CN206557640U CN201720230222.1U CN201720230222U CN206557640U CN 206557640 U CN206557640 U CN 206557640U CN 201720230222 U CN201720230222 U CN 201720230222U CN 206557640 U CN206557640 U CN 206557640U
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- amplifier
- resistance
- operational amplifier
- circuit
- diode
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Abstract
The utility model discloses the voltage follow module of geological mapping device, including operational amplifier, the 6th resistance R6 and supply voltage VCC, described 6th resistance R6 one end is used as input, the inverting input connection of the 6th resistance R6 other ends and operational amplifier, the in-phase input end ground connection of operational amplifier；Operational amplifier negative power end and positive power source terminal are all connected with supply voltage VCC；The output end of the operational amplifier as voltage follow module output end；The reverse input end of the operational amplifier and the inverse output terminal of operational amplifier are connected；The operational amplifier model OPA704.The utility model operational amplifier OPA704 negative power ends and positive power source terminal are connected to supply voltage, and their junction is all connected with the electric capacity of one end ground connection, the ability that amplifier amplifier drives electron stream is enhanced, buffer capacity is strengthened, improves the measurement accuracy of geological mapping device.
Description
Technical field
The utility model is related to a kind of voltage follow module, and in particular to the voltage follow module of geological mapping device.
Background technology
Geological mapping device is mainly used in being accurately positioned target location, can display target in real time during data acquisition
The attribute such as area, additionally it is possible to amplify, reduce numerical map and accurately find object boundary accurately, catch and form target line illustration or repair
Relocate type, project implementation scene can instant computing area, attribute connecting, data quality checking, scene the work such as confirm.Due to existing
The output impedance of the voltage amplifier of geological mapping device is generally higher, typically at several kilo-ohms to tens kilo-ohms, if rear class
Input impedance it is smaller, then signal have significant portion loss in the output circuit of prime, so as to cause geological mapping
Measurement device precision is not high enough.
Utility model content
Technical problem to be solved in the utility model is to overcome prior art not enough, it is therefore intended that provide geological mapping dress
The voltage follow module put, solves geological mapping device because the output impedance height of voltage amplifier causes loss of signal so as to cause
The problem of measurement accuracy is inaccurate.
The utility model is achieved through the following technical solutions：
The voltage follow module of geological mapping device, including operational amplifier, the 6th resistance and supply voltage, the described 6th
Resistance one end is as input, and the inverting input of the 6th resistance other end and operational amplifier is connected, operational amplifier it is same
Phase input end grounding；Operational amplifier negative power end and positive power source terminal are all connected with supply voltage；The output of the operational amplifier
Hold the output end as voltage follow module；The reverse input end of the operational amplifier and the inverse output terminal of operational amplifier
Connection；The operational amplifier model OPA704.The amplifying circuit that operational amplifier can perform mathematical calculations to signal.It was once
It is the basic components of simulation computer, thus gains the name.The operational amplifier made using integrated circuit technology, it is original except maintaining
Very high gain and input impedance the characteristics of outside, also have the advantages that exquisite, cheap and can flexibly use, thus active
Wave filter, switched-capacitor circuit, number-mould and analog-digital converter, direct current signal amplification, the generation and conversion of waveform, and signal
Quite varied application is obtained in terms of processing.
Further, the voltage follow module of geological mapping device, in addition to full-wave rectifying circuit, the full-wave rectification electricity
Road includes first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 7th resistance, the first diode, the two or two
Pole pipe, the first amplifier, the second amplifier, described 3rd resistor one end connect the positive input connection of the first amplifier, its
The output end connection of the other end and operational amplifier；The anode of first diode is connected to the output end of the first amplifier, and it is cloudy
Pole is connected to the reverse input end of the first amplifier；First resistor one end is connected to the negative electrode and the first amplifier of the first diode
On the circuit of connection, its other end ground connection；The negative electrode of second diode is connected to the anode and the first amplifier of the first diode
On the circuit of connection；5th resistance one end is connected on the circuit that the first diode is connected with first resistor, its other end and
The anode connection of two diodes；Second resistance one end is connected on the circuit that the 5th resistance is connected with the second diode, and its is another
End is connected with the reverse input end of the second amplifier；4th resistance one end is connected on the circuit of the second amplifier connection, and its is another
One end is connected on the circuit that 3rd resistor is connected with operational amplifier；7th resistance one end is connected to second resistance and put with second
On the circuit of big device connection, its other end is connected with the output end of the second amplifier；The output end of second amplifier is that all-wave is whole
The output end of current circuit.
Further, the voltage follow module of geological mapping device, in addition to the 3rd electric capacity, described 3rd electric capacity one end connects
The positive power source terminal of operational amplifier is connected on, its other end ground connection.
Further, the 8th pin of the operational amplifier is connected with supply voltage one end, and enhancing operational amplifier drives
The source of dynamic electron stream.
The utility model compared with prior art, has the following advantages and advantages：The utility model operation amplifier
Device OPA704 negative power ends and positive power source terminal are connected to supply voltage, and their junction is all connected with one end ground connection
Electric capacity, enhances the ability that amplifier amplifier drives electron stream, strengthens buffer capacity, improve the measurement of geological mapping device
Precision.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the utility model embodiment, constitutes the one of the application
Part, does not constitute the restriction to the utility model embodiment.In the accompanying drawings：
Fig. 1 is the utility model structural representation；
Fig. 2 is the utility model full-wave rectifying circuit figure.
Mark and corresponding parts title in accompanying drawing：
R1- first resistors, R2- second resistances, R3- 3rd resistors, the resistance of the 4th resistance R5- of R4- the 5th, the electricity of R6- the 6th
Resistance, the resistance of R7- the 7th, the amplifiers of U1- first, the amplifiers of U2- second, the diodes of D1- first, the diodes of D2- second, C1- the
One electric capacity, the electric capacity of C3- the 3rd.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, with reference to embodiment and accompanying drawing,
The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this
Utility model, is not intended as limiting of the present utility model.
Embodiment
As shown in figure 1, the voltage follow module of geological mapping device, including operational amplifier, the 6th resistance R6 and power supply
Voltage VCC, described 6th resistance R6 one end is as input, the inverting input of the 6th resistance R6 other ends and operational amplifier
Connection, the in-phase input end ground connection of operational amplifier；Operational amplifier negative power end and positive power source terminal are all connected with supply voltage
VCC；Strengthen the source that operational amplifier drives electron stream.The output end of the operational amplifier is defeated as voltage follow module
Go out end；The reverse input end of the operational amplifier and the inverse output terminal of operational amplifier are connected；The operation amplifier type
Number be OPA704, it is the track to track input and output based on COMS, and this structure can ensure that output voltage is admired greatly closely
Supply voltage value, its gain bandwidth product reaches 3MHz, and switching rate is 3V/us.
The voltage follow module of geological mapping device, in addition to the 3rd electric capacity C3, described 3rd electric capacity C3 one end are connected to
The positive power source terminal of operational amplifier, its other end ground connection.The 3rd jamproof ability of electric capacity C3 bosters；Geological mapping is filled
The voltage follow module put, in addition to the first electric capacity C1, described first electric capacity C1 one end is connected to the negative supply of operational amplifier
End, its other end ground connection.Because the output impedance of voltage amplifier is generally higher, typically at several kilo-ohms to tens kilo-ohms, such as
The input impedance of fruit rear class is smaller, then signal just has significant portion loss in the output circuit of prime.It is therefore desirable to
Voltage follower enters row buffering, plays a part of forming a connecting link.Input impedance can also be improved using voltage follower, is this
The capacity of input capacitance can significantly reduce, for application high-quality electric capacity provide premise, its output voltage with it is defeated
The relational expression for entering voltage is V-input=V-output, by can almost be exported after voltage follower circuit with zero-decrement to after
The electronic circuit in face.
As shown in Fig. 2 the voltage follow module of geological mapping device, in addition to full-wave rectifying circuit, the full-wave rectification
Circuit includes first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 7th resistance R7, the
One diode D1, the second diode D2, the first amplifier U1, the second amplifier U2,3rd resistor R3 one end connection first
The output end of amplifier U1 positive input connection, its other end and operational amplifier is connected；First diode D1 anode
The first amplifier U1 output end is connected to, its negative electrode is connected to the first amplifier U1 reverse input end；First resistor R1 mono-
End is connected on the circuit that the first diode D1 negative electrode is connected with the first amplifier U1, its other end ground connection；Second diode
D2 negative electrode is connected on the circuit that the first diode D1 anode is connected with the first amplifier U1；5th resistance R5 one end is connected
On the circuit that the first diode D1 is connected with first resistor R1, its other end is connected with the second diode D2 anode；Second
Resistance R2 one end is connected on the circuit that the 5th resistance R5 is connected with the second diode D2, its other end and the second amplifier U2's
Reverse input end is connected；4th resistance R4 one end is connected on the circuit of the second amplifier U2 connections, and its other end is connected to
On the circuit that three resistance R3 are connected with operational amplifier；7th resistance R7 one end is connected to second resistance R2 and the second amplifier U2
On the circuit of connection, its other end is connected with the second amplifier U2 output end；Second amplifier U2 output end is that all-wave is whole
The output end of current circuit.
Wherein, the first amplifier U1 constitutes in-phase amplifier, and the second amplifier U2 constitutes differential amplifier, and potential circuit is all
The positive input of amplifier is added in, higher input resistance is made it have, when the first amplifier U1 output end voltage is higher than
During the voltage of the first amplifier U1 reverse input end, the first diode D1 conductings, the second diode D2 cut-offs now first are put
Big device U1 constitutes voltage follower, have the first amplifier U1 output end voltage, the first amplifier U1 reverse input end voltage,
When second amplifier U2 output end voltage is equal, voltage is added to the second amplifier U2 by the 5th resistance R5 and second resistance R2
Inverting input；And the output end voltage phase of the second amplifier U2 positive input input voltage also with the first amplifier U1
Deng so the second amplifier U2 output voltage is：When the first amplifier U1 output end voltage is less than the first amplifier U1's
During the voltage of reverse input end, the first diode D1 cut-offs, the second diode D2 is turned on, and now the first amplifier U1 is mutually put to be same
Big device, when selecting R7=2R5=2R1=2R2, then the second amplifier U2 output end voltage is anti-equal to the first negative amplifier
To the voltage of input, above-mentioned analysis shows can obtain unidirectional voltage in the second amplifier U2 output end, realize all-wave whole
Stream.
Above-described embodiment, is entered to the purpose of this utility model, technical scheme and beneficial effect
One step is described in detail, be should be understood that and be the foregoing is only embodiment of the present utility model, is not used to limit
Fixed protection domain of the present utility model, all any modifications within spirit of the present utility model and principle, made, is equally replaced
Change, improve, should be included within protection domain of the present utility model.
Claims (4)
1. the voltage follow module of geological mapping device, it is characterised in that including operational amplifier, the 6th resistance (R6) and power supply
Voltage (VCC), described 6th resistance (R6) one end as input, the 6th resistance (R6) other end and operational amplifier it is anti-phase
Input is connected, the in-phase input end ground connection of operational amplifier；Operational amplifier negative power end and positive power source terminal are all connected with power supply
Voltage (VCC)；The output end of the operational amplifier as voltage follow module output end；The operational amplifier it is reverse
The inverse output terminal connection of input and operational amplifier；The operational amplifier model OPA704.
2. the voltage follow module of geological mapping device according to claim 1, it is characterised in that also including full-wave rectification
Circuit, the full-wave rectifying circuit include first resistor (R1), second resistance (R2), 3rd resistor (R3), the 4th resistance (R4),
5th resistance (R5), the 7th resistance (R7), the first diode (D1), the second diode (D2), the first amplifier (U1), second are put
Big device (U2), described 3rd resistor (R3) one end connects the positive input connection of the first amplifier (U1), its other end and fortune
Calculate the output end connection of amplifier；The anode of first diode (D1) is connected to the first amplifier (U1) output end, its negative electrode
It is connected to the first amplifier (U1) reverse input end；First resistor (R1) one end be connected to the negative electrode of the first diode (D1) with
On the circuit of first amplifier (U1) connection, its other end ground connection；The negative electrode of second diode (D2) is connected to the first diode
(D1) on the circuit that anode is connected with the first amplifier (U1)；5th resistance (R5) one end be connected to the first diode (D1) with
On the circuit of first resistor (R1) connection, its other end is connected with the anode of the second diode (D2)；Second resistance (R2) one end
It is connected on the circuit that the 5th resistance (R5) is connected with the second diode (D2), its other end is reverse with the second amplifier (U2)
Input is connected；4th resistance (R4) one end is connected on the circuit of the second amplifier (U2) connection, and its other end is connected to the
On the circuit that three resistance (R3) are connected with operational amplifier；7th resistance (R7) one end is connected to second resistance (R2) and put with second
On the circuit of big device (U2) connection, its other end is connected with the output end of the second amplifier (U2)；Second amplifier (U2) it is defeated
Go out output end of the end for full-wave rectifying circuit.
3. the voltage follow module of geological mapping device according to claim 1, it is characterised in that also including the 3rd electric capacity
(C3), described 3rd electric capacity (C3) one end is connected to the positive power source terminal of operational amplifier, its other end ground connection.
4. the voltage follow module of geological mapping device according to claim 1, it is characterised in that also including the first electric capacity
(C1), described first electric capacity (C1) one end is connected to the negative power end of operational amplifier, its other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720230222.1U CN206557640U (en) | 2017-03-10 | 2017-03-10 | The voltage follow module of geological mapping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720230222.1U CN206557640U (en) | 2017-03-10 | 2017-03-10 | The voltage follow module of geological mapping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206557640U true CN206557640U (en) | 2017-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720230222.1U Expired - Fee Related CN206557640U (en) | 2017-03-10 | 2017-03-10 | The voltage follow module of geological mapping device |
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| Country | Link |
|---|---|
| CN (1) | CN206557640U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932816A (en) * | 2017-03-10 | 2017-07-07 | 成都金广通科技有限公司 | The voltage follower of Geological data collecting device |
-
2017
- 2017-03-10 CN CN201720230222.1U patent/CN206557640U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932816A (en) * | 2017-03-10 | 2017-07-07 | 成都金广通科技有限公司 | The voltage follower of Geological data collecting device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171013 |
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| CF01 | Termination of patent right due to non-payment of annual fee |