CN206805338U - A kind of distal end compensation circuit of dc source - Google Patents
A kind of distal end compensation circuit of dc source Download PDFInfo
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- CN206805338U CN206805338U CN201720653954.1U CN201720653954U CN206805338U CN 206805338 U CN206805338 U CN 206805338U CN 201720653954 U CN201720653954 U CN 201720653954U CN 206805338 U CN206805338 U CN 206805338U
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Abstract
The utility model discloses a kind of distal end compensation circuit of dc source, includes negative pole acquisition module and positive pole acquisition module；Also include reverse module, addition module, reverse connecting protection module and voltage compensation scope limitation module；The input of the reversely module is connected with the output end of negative pole acquisition module；The reversely output end of module and the output end of positive pole acquisition module are connected with the input of addition module；The output end of the addition module is connected with voltage compensation scope limitation module；The voltage compensation scope limitation module is connected with reverse connecting protection module.The utility model is acquired simultaneously by the voltage drop of anode and negative terminal to power cable, and the change collected is handled, and the adjustment of the part participation electric power output voltage as Voltage Feedback, so as to eliminate the voltage drop of power cable.It can be applied to the larger power supply unit of supply load electric current, the electrical appliance place sensitive to input voltage, while can also be applied to high precision electro source circuit, and flexible performance is strong.
Description
Technical field
It the utility model is related to voltage cable compensation technique field, and in particular to a kind of distal end compensation electricity of dc source
Road.
Background technology
In large power supply application scenario, with the increase of electric power outputting current, power output terminal to electrical equipment
Input terminal between the voltage drop of power cable will dramatically increase, when particularly power cable is longer.When electrical equipment pair
When input voltage is more sensitive, cable pressure drop will cause some bad consequences, occur in order to avoid such situation occurs, therefore
Need that voltage drop present on cable is modified to compensate to meet expection to reach the voltage of adjusting point.
Existing distal end compensation circuit is directly acquired to the voltage of check point, direct as output feedback voltage
Control circuit is acted on, so as to adjust the voltage output of power supply unit.
There is field wiring difficulty, very flexible in existing technology, wiring error causes the failure of complete machine power-supply device, damage
It is bad, and then cause the possibility for burning electrical equipment.
The content of the invention
The purpose of this utility model is to be directed to above-mentioned deficiency of the prior art, there is provided is mended a kind of distal end of dc source
Repay circuit.
The purpose of this utility model is achieved through the following technical solutions：A kind of distal end compensation circuit of dc source, including
There are the negative pole acquisition module for gathering cathode conductor voltage drop and the positive pole for gathering positive wire voltage drop to gather mould
Block；
Also include reverse module, addition module, reverse connecting protection module and voltage compensation scope limitation module；It is described anti-
It is connected to the input of module with the output end of negative pole acquisition module；The output end and positive pole acquisition module of the reversely module
Output end be connected with the input of addition module；The output end of the addition module connects with voltage compensation scope limitation module
Connect；The voltage compensation scope limitation module is connected with reverse connecting protection module.
The utility model is further arranged to, and the negative pole acquisition module includes operational amplifier U1；The computing is put
Big device U1 negative input end and the output end of cathode conductor connect；The positive input terminal of the operational amplifier U1 and cathode conductor
Input connects；The output end of the operational amplifier U1 is connected with the input of reverse module.
The utility model is further arranged to, and the reversely module includes operational amplifier U2；The operational amplifier
U2 negative input end is connected with the output end of negative pole acquisition module；The positive input terminal ground connection of the operational amplifier U2；The fortune
Calculate amplifier U2 output end and the input of addition module connects.
The utility model is further arranged to, and the positive pole acquisition module includes operational amplifier U3；The computing is put
Big device U3 negative input end and the output end of positive wire connect；The positive input terminal of the operational amplifier U3 and positive wire
Input connects；The output end of the operational amplifier U3 and the input of addition module connect.
The utility model is further arranged to, and the addition module includes operational amplifier U4；The operational amplifier
U4 negative input end is connected with the output end of reverse module；The negative input end of the operational amplifier U4 and positive pole acquisition module
Output end connects；The positive input terminal ground connection of the amplifier U4.
The utility model is further arranged to, and the reverse connecting protection module includes operational amplifier U5 and optocoupler relay
Device U6；The negative input end of the operational amplifier U5 and the output end of cathode conductor connect；The operational amplifier U5's is just defeated
Enter end to be connected with the output end of positive wire；The output end of the operational amplifier U5 connects with light coupling relay U6 control terminal
Connect；The switch terminals of the light coupling relay U6 are connected with voltage compensation scope limitation module.
The beneficial effects of the utility model：The utility model by the voltage drop of anode and negative terminal to power cable simultaneously
It is acquired, the change collected is handled, and the adjustment of the part participation electric power output voltage as Voltage Feedback,
So as to eliminate the voltage drop of power cable.It can be applied to the larger power supply unit of supply load electric current, and electrical appliance is to input electricity
The place of pressure-sensitive sense, while high precision electro source circuit is can also be applied to, flexible performance is strong.
Brief description of the drawings
Utility model is described further using accompanying drawing, but the embodiment in accompanying drawing is not formed to of the present utility model
What is limited, on the premise of not paying creative work, can also be according to the following drawings for one of ordinary skill in the art
Obtain other accompanying drawings.
Fig. 1 is frame principle figure of the present utility model；
Fig. 2 is circuit theory diagrams of the present utility model；
Wherein：1- negative pole acquisition modules；2- positive pole acquisition modules；The reverse modules of 3-；4- addition modules；5- reverse connecting protection moulds
Block；6- voltage compensations scope limits module.
Embodiment
The utility model is further described with the following Examples.
Fig. 1 and Fig. 2 is understood；A kind of distal end compensation circuit of dc source described in the present embodiment, include for gathering
The negative pole acquisition module 1 of cathode conductor voltage drop and the positive pole acquisition module 2 for gathering positive wire voltage drop；
Also include reverse module 3, addition module 4, reverse connecting protection module 5 and voltage compensation scope limitation module 6；Institute
The input for stating reverse module 3 is connected with the output end of negative pole acquisition module 1；The output end and positive pole of the reversely module 3
Input of the output end of acquisition module 2 with addition module 4 is connected；The output end of the addition module 4 and voltage compensation model
Limitation module 6 is enclosed to connect；The voltage compensation scope limitation module 6 is connected with reverse connecting protection module 5.
Specifically, directly the voltage of check point is acquired compared to traditional distal end compensation circuit, as defeated
Go out feedback voltage and directly act on control circuit, so as to adjust the voltage output of power supply unit, the distal end described in the present embodiment
Compensation circuit, it is acquired simultaneously by the voltage drop of anode and negative terminal to power cable, at the change that collects
Reason, and the adjustment of the part participation electric power output voltage as Voltage Feedback, so as to eliminate the voltage drop of power cable.It can
Applied to the larger power supply unit of supply load electric current, the electrical appliance place sensitive to input voltage, while can also be applied to height
Precision power circuit.
A kind of distal end compensation circuit of dc source described in the present embodiment, the negative pole acquisition module 1 include computing
Amplifier U1；The negative input end of the operational amplifier U1 and the output end of cathode conductor connect；The operational amplifier U1's
The input of positive input terminal and cathode conductor connects；The input of the output end of the operational amplifier U1 and reverse module 3 connects
Connect.A kind of distal end compensation circuit of dc source described in the present embodiment, the reversely module 3 include operational amplifier U2；
The negative input end of the operational amplifier U2 is connected with the output end of negative pole acquisition module 1；The operational amplifier U2's is just defeated
Enter end ground connection；The output end of the operational amplifier U2 is connected with the input of addition module 4.One kind described in the present embodiment is straight
The distal end compensation circuit of power supply is flowed, the positive pole acquisition module 2 includes operational amplifier U3；The operational amplifier U3's is negative
The output end of input and positive wire connects；The positive input terminal of the operational amplifier U3 and the input of positive wire connect
Connect；The output end of the operational amplifier U3 is connected with the input of addition module 4.A kind of dc source described in the present embodiment
Distal end compensation circuit, the addition module 4 includes operational amplifier U4；The negative input end of the operational amplifier U4 with it is anti-
Connected to the output end of module 3；The negative input end of the operational amplifier U4 is connected with the output end of positive pole acquisition module 2；Institute
State amplifier U4 positive input terminal ground connection.
In the present embodiment, the input to positive and negative current supply line and output end sample respectively, carry out again afterwards
Superposition, because voltage detecting line is abnormal or it when can avoid directly being acquired adjusting point voltage in general circuit design
In one disconnect caused by power supply unit fault, and then cause the damage of electrical equipment.
In the present embodiment, a wire in the voltage detecting line for connecting adjusting point disconnects, and circuit can also be real
Now the voltage drop of another wire to being not turned off compensates.When two voltage detecting lines simultaneously switch off, compensation function
It will not work, but not influence the normal work of power supply unit.Positive pole, negative pole, anti-phase and addition acquisition module include
Amplifier U1, U2, U3, U4, resistance R612, R616, R618, R619, R602, R600, R604, R606, R601, R603, R601,
R603, electric capacity C604, C603C, C600, C602, C601.
Above-mentioned amplifier U1, U2, U3, U4 LM358, resistance R600, R606, R612, R619 47k, resistance R602,
R604, R616, R618 100k, resistance R601, R603 10k, resistance R601, R603 4.7k, the unit of resistance is Europe.Electricity
Hold C604, C603C, C600, C602 100nF, electric capacity C601 is 1uF.
A kind of distal end compensation circuit of dc source described in the present embodiment, the reverse connecting protection module 5 include computing
Amplifier U5 and light coupling relay U6；The negative input end of the operational amplifier U5 and the output end of cathode conductor connect；Institute
The output end of the positive input terminal and positive wire of stating operational amplifier U5 connects；The output end and optocoupler of the operational amplifier U5
Relay U6 control terminal connection；The switch terminals of the light coupling relay U6 are connected with voltage compensation scope limitation module 6.
In the present embodiment, voltage compensation scope limitation module 6 effect be to using unit when connecing current supply line, by
Power supply capacity is not met in the wire that some reasons cause to select, will cause wire persistent fever when such as increasing compensation function, and enter
And the situation of security incident is caused to be protected.The circuit is protected by limiting maximum offset voltage scope to realize, and one
As the compensation way of direct Sampling and Correcting point voltage the limitation can only be realized by indirect mode, such as adopted using MCU ADC
Collection, virtually adds circuit cost.
Voltage compensation scope limiting circuit includes Zener diode D600, and its specification is 2V/500mW.
In the present embodiment, prevent that reversed protection circuit is used for preventing due to reversed leading voltage detecting line is positive and negative using unit
The power supply device failure of cause.By detecting reversed state, compensation circuit is disconnected to realize the function.Above-mentioned amplifier U5 is
LM358, light coupling relay U6 are AB37S.Resistance R621, R625 47k, resistance R622, R624 56k, resistance R623,
R626 is 1k, electric capacity C604, C603C, C600, C602 100nF, and electric capacity C601 is 1uF.
Finally it should be noted that above example is only illustrating the technical solution of the utility model, rather than to this reality
With the limitation of novel protected scope, although being explained with reference to preferred embodiment to the utility model, this area it is general
It is logical it will be appreciated by the skilled person that can be modified to the technical solution of the utility model or equivalent substitution, without departing from this
The spirit and scope of utility model technical scheme.
Claims (6)
- A kind of 1. distal end compensation circuit of dc source, it is characterised in that：Include for gathering the negative of cathode conductor voltage drop Pole acquisition module（1）And for gathering the positive pole acquisition module of positive wire voltage drop（2）；Also include reverse module（3）, addition module（4）, reverse connecting protection module（5）And voltage compensation scope limitation module （6）；The reverse module（3）Input and negative pole acquisition module（1）Output end connection；The reverse module（3）It is defeated Go out end and positive pole acquisition module（2）Output end and addition module（4）Input connection；The addition module（4）'s Output end and voltage compensation scope limitation module（6）Connection；The voltage compensation scope limits module（6）With reverse connecting protection module （5）Connection.
- A kind of 2. distal end compensation circuit of dc source according to claim 1, it is characterised in that：The negative pole gathers mould Block（1）Include operational amplifier U1；The negative input end of the operational amplifier U1 and the output end of cathode conductor connect；It is described Operational amplifier U1 positive input terminal and the input of cathode conductor connect；The output end of the operational amplifier U1 and reverse mould Block（3）Input connection.
- A kind of 3. distal end compensation circuit of dc source according to claim 1, it is characterised in that：The reverse module （3）Include operational amplifier U2；The negative input end of the operational amplifier U2 and negative pole acquisition module（1）Output end connect Connect；The positive input terminal ground connection of the operational amplifier U2；The output end and addition module of the operational amplifier U2（4）Input End connection.
- A kind of 4. distal end compensation circuit of dc source according to claim 1, it is characterised in that：The positive pole gathers mould Block（2）Include operational amplifier U3；The negative input end of the operational amplifier U3 and the output end of positive wire connect；It is described Operational amplifier U3 positive input terminal and the input of positive wire connect；The output end of the operational amplifier U3 and addition mould Block（4）Input connection.
- A kind of 5. distal end compensation circuit of dc source according to claim 1, it is characterised in that：The addition module （4）Include operational amplifier U4；The negative input end of the operational amplifier U4 and reverse module（3）Output end connection；Institute State operational amplifier U4 negative input end and positive pole acquisition module（2）Output end connection；The positive input terminal of the amplifier U4 Ground connection.
- A kind of 6. distal end compensation circuit of dc source according to claim 1, it is characterised in that：The reverse connecting protection mould Block（5）Include operational amplifier U5 and light coupling relay U6；The negative input end and cathode conductor of the operational amplifier U5 Output end connection；The positive input terminal of the operational amplifier U5 and the output end of positive wire connect；The operational amplifier U5 output end is connected with light coupling relay U6 control terminal；The switch terminals of the light coupling relay U6 limit with voltage compensation scope Molding block（6）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720653954.1U CN206805338U (en) | 2017-06-07 | 2017-06-07 | A kind of distal end compensation circuit of dc source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720653954.1U CN206805338U (en) | 2017-06-07 | 2017-06-07 | A kind of distal end compensation circuit of dc source |
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| Publication Number | Publication Date |
|---|---|
| CN206805338U true CN206805338U (en) | 2017-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720653954.1U Active CN206805338U (en) | 2017-06-07 | 2017-06-07 | A kind of distal end compensation circuit of dc source |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108733117A (en) * | 2018-04-28 | 2018-11-02 | 北京机械设备研究所 | A kind of line drop control device of servo mechanism power supply distal end voltage stabilizing |
| CN109036301A (en) * | 2018-07-06 | 2018-12-18 | 武汉精测电子集团股份有限公司 | A kind of distal end voltage compensating method compensated automatically based on hardware circuit |
-
2017
- 2017-06-07 CN CN201720653954.1U patent/CN206805338U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108733117A (en) * | 2018-04-28 | 2018-11-02 | 北京机械设备研究所 | A kind of line drop control device of servo mechanism power supply distal end voltage stabilizing |
| CN109036301A (en) * | 2018-07-06 | 2018-12-18 | 武汉精测电子集团股份有限公司 | A kind of distal end voltage compensating method compensated automatically based on hardware circuit |
| CN109036301B (en) * | 2018-07-06 | 2021-07-23 | 武汉精测电子集团股份有限公司 | Remote voltage compensation method based on hardware circuit automatic compensation |
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