CN103279049A - Circuit amplifying collected signal and arranged in transformer substation air conditioner intelligent control system - Google Patents
Circuit amplifying collected signal and arranged in transformer substation air conditioner intelligent control system Download PDFInfo
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- CN103279049A CN103279049A CN2013102373204A CN201310237320A CN103279049A CN 103279049 A CN103279049 A CN 103279049A CN 2013102373204 A CN2013102373204 A CN 2013102373204A CN 201310237320 A CN201310237320 A CN 201310237320A CN 103279049 A CN103279049 A CN 103279049A
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- control system
- air conditioner
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Abstract
The invention discloses a circuit amplifying a collected signal and arranged in a transformer substation air conditioner intelligent control system. The circuit amplifying the collected signal and arranged in the transformer substation air conditioner intelligent control system comprises a first operational amplifier, a second operational amplifier, a second capacitor, a fourth resistor, an adjustable resistor and a power source, wherein the non-inverting input end of the first operational amplifier is connected with a collected-signal input line, and the inverted input end of the first operational amplifier is connected with the output end of the first operational amplifier. The two ends of the second capacitor are connected with the output end of the first operational amplifier and the non-inverting input end of the second operational amplifier respectively, the two ends of the fourth resistor are connected with the power source and the adjustable resistor respectively, the end opposite to the other end which is connected with the fourth resistor is earthed, the adjustable end of the adjustable resistor is connected with the inverted input end of the second operational amplifier, and the output end of the second operational amplifier is connected with a signal amplifying output line. By the adoption of the circuit amplifying the collected signal and arranged in the transformer substation air conditioner intelligent control system, the signal collected by a sensor can be amplified and loss of the collected signal in the process of transmitting can be reduced.
Description
Technical field
The present invention relates to intelligent substation control technology field, specifically is to amplify the circuit of gathering signal in transformer station's air conditioner intelligent control system.
Background technology
Along with industrial expansion, all trades and professions improve day by day to the power supply reliability of electric system and the requirement of stability, transformer station is as the core link of electric system, it is used for compiling power supply, lifting voltage and distributes electric energy, undertaking high-low pressure conversion and the power supply task of region, therefore, the safe operation of transformer station is most important to electric system.
In order to guarantee the reliable and stable operation of transformer station, existing transformer station generally is equipped with the air conditioner intelligent control system.Wherein, the signal that the air conditioner intelligent control system of transformer station monitors according to sensor by its controller when using sends corresponding control, the weak output signal that the sensor of existing air conditioner intelligent control system monitors and when transmitting in the line loss bigger, the weak output signal that this can cause air conditioner intelligent control system middle controller to receive, and then influence control system and make corresponding control.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, providing a kind of can reduce the wastage, and can amplify the circuit of gathering signal to gathering in transformer station's air conditioner intelligent control system that signal amplifies.
Purpose of the present invention is achieved through the following technical solutions: amplify the circuit of gathering signal in transformer station's air conditioner intelligent control system, comprise first operational amplifier, second operational amplifier, second electric capacity, the 4th resistance, adjustable resistance and power supply, the described first operational amplifier in-phase input end is connected with the collection signal input line, the first operational amplifier inverting input is connected with its output terminal, the described second electric capacity two ends are connected with the second operational amplifier in-phase input end with first operational amplifier output terminal respectively, described the 4th resistance two ends are connected with adjustable resistance with power supply respectively, described adjustable resistance connects the other end ground connection of the 4th resistance terminal relatively, the adjustable end of adjustable resistance is connected with the second operational amplifier inverting input, and the output terminal of described second operational amplifier is connected with the amplifying signal output line.Gather the signal that the signal input line receiving sensor collects when the present invention uses, the amplifying signal output line is used for the signal after the present invention handles is exported.
Amplify the circuit of gathering signal in transformer station's air conditioner intelligent control system, also comprise first resistance, described first resistance, one end is connected its other end ground connection with the collection signal input line.Wherein, first resistance constitutes the pull down resistor of first operational amplifier.
Amplify to gather the circuit of signal in transformer station's air conditioner intelligent control system, also comprise second resistance, described second resistance, one end is connected on the circuit between second electric capacity and the second operational amplifier in-phase input end, its other end ground connection.Wherein, first resistance constitutes the pull down resistor of second operational amplifier.
Amplify to gather the circuit of signal in transformer station's air conditioner intelligent control system, also comprise first stabilivolt, the described first stabilivolt negative pole is connected on the circuit between the 4th resistance and the adjustable resistance, the plus earth of first stabilivolt.
Amplify the circuit of gathering signal in transformer station's air conditioner intelligent control system, also comprise first electric capacity and three resistance in parallel with first electric capacity, described first electric capacity is connected with output terminal with the second operational amplifier inverting input respectively with the parallel branch two ends of the 3rd resistance.Wherein, first electric capacity is used for high frequency noise and the spike burr of filtered signal.
Compared with prior art, the present invention has following beneficial effect: the first operational amplifier inverting input is connected with its output terminal among (1) the present invention, first operational amplifier constitutes voltage follower, second operational amplifier constitutes pre-amplification circuit, so, first operational amplifier has high input impedance, when cooperating the work of second operational amplifier, when amplify gathering signal, can reduce the wastage, and then can avoid the collection weak output signal of air conditioner intelligent control system middle controller input and influence Based Intelligent Control.
(2) the present invention is connected with second electric capacity between first operational amplifier and second operational amplifier, so, and can the isolated DC voltage signal by second electric capacity when the present invention uses.
(3) the present invention is directed in the air conditioner intelligent control system power supply needs power to a large amount of components and parts, the present invention utilizes adjustable resistance to come the supply voltage in input the present invention is regulated, and then can reach the voltage of demand, so, can avoid the present invention is equipped with the cost increase that power supply causes separately.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
The corresponding name of Reference numeral is called in the accompanying drawing: 1, gather signal input line, and 2, the amplifying signal output line, R1, first resistance, R2, second resistance, R3, the 3rd resistance, R4, the 4th resistance, R5, adjustable resistance, C1, first electric capacity, C2, second electric capacity, A1, first operational amplifier, A2, second operational amplifier, DW1, first stabilivolt, VCC, power supply.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, amplify the circuit of gathering signal in transformer station's air conditioner intelligent control system, comprise first operational amplifier A 1, second operational amplifier A 2, second capacitor C 2, the 4th resistance R 4, adjustable resistance R5 and power supply VCC, wherein, first operational amplifier A, 1 in-phase input end is connected with collection signal input line 1, the first operational amplifier A 1 inverting input and is connected with its output terminal.Second capacitor C, 2 two ends are connected with second operational amplifier A, 2 in-phase input ends with first operational amplifier A, 1 output terminal respectively, the 4th resistance R 4 two ends are connected with adjustable resistance R5 with power supply VCC respectively, adjustable resistance R5 is to connecting the other end ground connection of the 4th resistance R 4 ends, the adjustable end of adjustable resistance R5 is connected with second operational amplifier A, 2 inverting inputs, and the output terminal of the second operational amplifier A2 is connected with amplifying signal output line 2.
Present embodiment also comprises first resistance R 1, second resistance R 2, the 3rd resistance R 3, the first stabilivolt DW1 and first capacitor C 1, and wherein, first resistance R, 1 one ends are connected its other end ground connection with collection signal input line 1; Second resistance R, 2 one ends are connected on the circuit between second capacitor C 2 and second operational amplifier A, 2 in-phase input ends, its other end ground connection; The first stabilivolt DW1 negative pole is connected on the circuit between the 4th resistance R 4 and the adjustable resistance R5, the plus earth of the first stabilivolt DW1.First capacitor C 1 is connected with output terminal with second operational amplifier A, 2 inverting inputs respectively with the parallel branch two ends of the 3rd resistance R 3 with the 3rd resistance R 3 formation parallel branches in parallel, first capacitor C 1.
When present embodiment is used, gather signal input line 1 and connect the other end of first operational amplifier A, 1 end relatively for connecting sensor, and amplifying signal output line 2 is used for connecting the controller of air conditioner intelligent control system, gathers signal and finishes signal after through first operational amplifier A 1 and second operational amplifier A 2 and amplify.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention does, can not assert that the specific embodiment of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, not breaking away from other embodiments that draw under the technical scheme of the present invention, all should be included in protection scope of the present invention.
Claims (5)
1. amplify the circuit of gathering signal in transformer station's air conditioner intelligent control system, it is characterized in that: comprise first operational amplifier (A1), second operational amplifier (A2), second electric capacity (C2), the 4th resistance (R4), adjustable resistance (R5) and power supply (VCC), described first operational amplifier (A1) in-phase input end is connected with gathers signal input line (1), first operational amplifier (A1) inverting input is connected with its output terminal, described second electric capacity (C2) two ends are connected with second operational amplifier (A2) in-phase input end with first operational amplifier (A1) output terminal respectively, described the 4th resistance (R4) two ends are connected with adjustable resistance (R5) with power supply (VCC) respectively, described adjustable resistance (R5) connects the other end ground connection of the 4th resistance (R4) end relatively, the adjustable end of adjustable resistance (R5) is connected with second operational amplifier (A2) inverting input, and the output terminal of described second operational amplifier (A2) is connected with amplifying signal output line (2).
2. amplify the circuit of gathering signal in the transformer station according to claim 1 air conditioner intelligent control system, it is characterized in that: also comprise first resistance (R1), described first resistance (R1) end is connected its other end ground connection with collection signal input line (1).
3. amplify the circuit of gathering signal in the transformer station according to claim 1 air conditioner intelligent control system, it is characterized in that: also comprise second resistance (R2), described second resistance (R2) end is connected on the circuit between second electric capacity (C2) and second operational amplifier (A2) in-phase input end, its other end ground connection.
4. amplify the circuit of gathering signal in the transformer station according to claim 1 air conditioner intelligent control system, it is characterized in that: also comprise first stabilivolt (DW1), described first stabilivolt (DW1) negative pole is connected on the circuit between the 4th resistance (R4) and the adjustable resistance (R5), the plus earth of first stabilivolt (DW1).
5. according to amplifying the circuit of gathering signal in any described transformer station air conditioner intelligent control system in the claim 1～4, it is characterized in that: also comprise first electric capacity (C1) and three resistance (R3) in parallel with first electric capacity (C1), described first electric capacity (C1) is connected with output terminal with second operational amplifier (A2) inverting input respectively with the parallel branch two ends of the 3rd resistance (R3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102373204A CN103279049A (en) | 2013-06-17 | 2013-06-17 | Circuit amplifying collected signal and arranged in transformer substation air conditioner intelligent control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102373204A CN103279049A (en) | 2013-06-17 | 2013-06-17 | Circuit amplifying collected signal and arranged in transformer substation air conditioner intelligent control system |
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| CN103279049A true CN103279049A (en) | 2013-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013102373204A Pending CN103279049A (en) | 2013-06-17 | 2013-06-17 | Circuit amplifying collected signal and arranged in transformer substation air conditioner intelligent control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187186A (en) * | 2019-06-28 | 2019-08-30 | 广东电网有限责任公司 | A kind of modified segmentation circuit resistance tester |
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| CN201215589Y (en) * | 2008-05-07 | 2009-04-01 | 中国科学院高能物理研究所 | Multi-path low noise charge sensitive amplifier circuit system for deep space detection |
| CN201358259Y (en) * | 2009-03-02 | 2009-12-09 | 杭州电子科技大学 | Blast furnace temperature detection circuit |
| CN102075150A (en) * | 2010-09-29 | 2011-05-25 | 深圳市蓝韵实业有限公司 | Photoelectric signal preconditioning amplifying circuit of auto iris for digital gastrointestinal machine |
| CN102355263A (en) * | 2011-05-24 | 2012-02-15 | 华北电力大学 | Improved signal acquisition conditioning circuit |
| CN202421428U (en) * | 2011-12-22 | 2012-09-05 | 山西省电力公司吕梁供电分公司 | Hot-line detection equipment for partial discharge of transformer substation |
| CN102710243A (en) * | 2012-06-25 | 2012-10-03 | 深圳青铜剑电力电子科技有限公司 | Protection circuit and protection method of insulated gate device |
| CN203289386U (en) * | 2013-06-17 | 2013-11-13 | 成都荣耀科技有限公司 | Collected signals amplification module in transformer substation air-conditioner intelligent control system |
-
2013
- 2013-06-17 CN CN2013102373204A patent/CN103279049A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1928762A (en) * | 2005-09-09 | 2007-03-14 | 鸿富锦精密工业（深圳）有限公司 | Fan control circuit |
| CN201215589Y (en) * | 2008-05-07 | 2009-04-01 | 中国科学院高能物理研究所 | Multi-path low noise charge sensitive amplifier circuit system for deep space detection |
| CN201358259Y (en) * | 2009-03-02 | 2009-12-09 | 杭州电子科技大学 | Blast furnace temperature detection circuit |
| CN102075150A (en) * | 2010-09-29 | 2011-05-25 | 深圳市蓝韵实业有限公司 | Photoelectric signal preconditioning amplifying circuit of auto iris for digital gastrointestinal machine |
| CN102355263A (en) * | 2011-05-24 | 2012-02-15 | 华北电力大学 | Improved signal acquisition conditioning circuit |
| CN202421428U (en) * | 2011-12-22 | 2012-09-05 | 山西省电力公司吕梁供电分公司 | Hot-line detection equipment for partial discharge of transformer substation |
| CN102710243A (en) * | 2012-06-25 | 2012-10-03 | 深圳青铜剑电力电子科技有限公司 | Protection circuit and protection method of insulated gate device |
| CN203289386U (en) * | 2013-06-17 | 2013-11-13 | 成都荣耀科技有限公司 | Collected signals amplification module in transformer substation air-conditioner intelligent control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187186A (en) * | 2019-06-28 | 2019-08-30 | 广东电网有限责任公司 | A kind of modified segmentation circuit resistance tester |
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Application publication date: 20130904 |