CN103292420A - Preceding stage collected signal processing module for transformer substation air-conditioner control system - Google Patents
Preceding stage collected signal processing module for transformer substation air-conditioner control system Download PDFInfo
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- CN103292420A CN103292420A CN2013102373524A CN201310237352A CN103292420A CN 103292420 A CN103292420 A CN 103292420A CN 2013102373524 A CN2013102373524 A CN 2013102373524A CN 201310237352 A CN201310237352 A CN 201310237352A CN 103292420 A CN103292420 A CN 103292420A
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Abstract
The invention discloses a preceding stage collected signal processing module for a transformer substation air-conditioner control system. The preceding stage collected signal processing module for the transformer substation air-conditioner control system comprises a first operational amplifier (A1), a second operational amplifier (A2) and an adjustable resistor (R5). A non-inversing input end of the first operational amplifier (A1) is connected with a collected signal input line (1) and an inverting input end of the first operational amplifier (A1) is connected with an output end of the first operational amplifier (A1). The output end of the first operational amplifier (A1) is connected with a non-inversing input end of the second operational amplifier (A2). An adjustable end of the adjustable resistor (R5) is connected with an inverting input end of the second operational amplifier (A2). An output end of the second operational amplifier (A2) is connected with an amplifier signal output line (2). According to the structure, components are reduced and cost is low. When the preceding stage collected signal processing module for the transformer substation air-conditioner control system is used, signals collected by a sensor can be amplified and consumption in the process of collected signal transmission is reduced.
Description
Technical field
The present invention relates to intelligent substation control technology field, specifically is to gather signal processing module for the prime of transformer station's air-conditioner control system.
Background technology
Along with industrial expansion, all trades and professions improve day by day to the power supply reliability of power system and the requirement of stability, transformer station is as the core link of power 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 power system.
In order to guarantee the reliable and stable operation of transformer station, existing transformer station generally is equipped with the air-conditioning RACS.Wherein, the signal that the air-conditioning RACS 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-conditioning RACS monitors and when transmitting in the line loss bigger, the weak output signal that this can cause air-conditioning RACS 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 be to gathering the prime collection signal processing module that is used for transformer station's air-conditioner control system that signal amplifies.
Purpose of the present invention is achieved through the following technical solutions: the prime that is used for transformer station's air-conditioner control system is gathered signal processing module, comprise first operational amplifier, second operational amplifier, the 4th resistance and adjustable resistance, 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, first operational amplifier output terminal is connected with the second operational amplifier in-phase input end, described the 4th resistance one end is connected with adjustable resistance, its other end is connected with power supply, 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 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.
The prime that is used for transformer station's air-conditioner control system is gathered signal processing module, also comprises first resistance, and 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.
The prime that is used for transformer station's air-conditioner control system is gathered signal processing module, also comprises the 6th resistance, and described the 6th resistance string is associated on the circuit between first operational amplifier output terminal and the second operational amplifier in-phase input end.
The prime that is used for transformer station's air-conditioner control system is gathered signal processing module, also comprises second resistance, and described second resistance, one end is connected on the circuit between the 6th resistance 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.
The prime that is used for transformer station's air-conditioner control system is gathered signal processing module, also comprises first voltage-stabiliser tube, and the described first voltage-stabiliser tube negative pole is connected on the circuit between the 4th resistance and the adjustable resistance, the plus earth of first voltage-stabiliser tube.
The prime that is used for transformer station's air-conditioner control system is gathered signal processing module, also comprise first electric capacity and three resistance in parallel with first electric capacity, described first electric capacity is connected with output 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 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-conditioning RACS middle controller input and influence Based Intelligent Control.
(2) the present invention is directed in the air-conditioning RACS 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, R6, the 6th resistance, C1, first electric capacity, A1, first operational amplifier, A2, second operational amplifier, DW1, first voltage-stabiliser tube, VCC, power supply.
The specific 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, the prime that is used for transformer station's air-conditioner control system is gathered signal processing module, comprise first operational amplifier A 1, second operational amplifier A 2, the 6th resistance R 6, 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.The 6th resistance R 6 two ends are connected with second operational amplifier A, 2 in-phase input ends with first operational amplifier A, 1 output 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 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 voltage-stabiliser tube 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 the 6th resistance R 6 and second operational amplifier A, 2 in-phase input ends, its other end ground connection; The first voltage-stabiliser tube 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 voltage-stabiliser tube DW1.First capacitor C 1 is connected with output 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-conditioning RACS, 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 embodiment 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 (6)
1. the prime that is used for transformer station's air-conditioner control system is gathered signal processing module, it is characterized in that: comprise first operational amplifier (A1), second operational amplifier (A2), the 4th resistance (R4) and adjustable resistance (R5), 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, first operational amplifier (A1) output is connected with second operational amplifier (A2) in-phase input end, described the 4th resistance (R4) end is connected with adjustable resistance (R5), its other end is connected with power supply (VCC), 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 of described second operational amplifier (A2) is connected with amplifying signal output line (2).
2. the prime for transformer station's air-conditioner control system according to claim 1 is gathered signal processing module, 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. the prime for transformer station's air-conditioner control system according to claim 1 is gathered signal processing module, it is characterized in that: also comprise the 6th resistance (R6), described the 6th resistance (R6) is connected on the circuit between first operational amplifier (A1) output and second operational amplifier (A2) in-phase input end.
4. the prime for transformer station's air-conditioner control system according to claim 3 is gathered signal processing module, it is characterized in that: also comprise second resistance (R2), described second resistance (R2) end is connected on the circuit between the 6th resistance (R6) and second operational amplifier (A2) in-phase input end, its other end ground connection.
5. the prime for transformer station's air-conditioner control system according to claim 1 is gathered signal processing module, it is characterized in that: also comprise first voltage-stabiliser tube (DW1), described first voltage-stabiliser tube (DW1) negative pole is connected on the circuit between the 4th resistance (R4) and the adjustable resistance (R5), the plus earth of first voltage-stabiliser tube (DW1).
6. gather signal processing module according to any described prime for transformer station's air-conditioner control system in the claim 1～5, 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 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 |
|---|---|---|---|
| CN2013102373524A CN103292420A (en) | 2013-06-17 | 2013-06-17 | Preceding stage collected signal processing module for transformer substation air-conditioner control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102373524A CN103292420A (en) | 2013-06-17 | 2013-06-17 | Preceding stage collected signal processing module for transformer substation air-conditioner control system |
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| Publication Number | Publication Date |
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| CN103292420A true CN103292420A (en) | 2013-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013102373524A Pending CN103292420A (en) | 2013-06-17 | 2013-06-17 | Preceding stage collected signal processing module for transformer substation air-conditioner control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106371384A (en) * | 2016-09-07 | 2017-02-01 | 深圳市中科智诚科技有限公司 | Intelligent monitoring system based on wireless communication technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57104408A (en) * | 1980-12-23 | 1982-06-29 | Diesel Kiki Co Ltd | Air conditioner for vehicle |
| 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 |
| 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 |
| CN203278756U (en) * | 2013-06-17 | 2013-11-06 | 成都荣耀科技有限公司 | Module for amplifying acquired signals of air conditioning control subsystem of transformer substation |
-
2013
- 2013-06-17 CN CN2013102373524A patent/CN103292420A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57104408A (en) * | 1980-12-23 | 1982-06-29 | Diesel Kiki Co Ltd | Air conditioner for vehicle |
| 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 |
| 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 |
| CN203278756U (en) * | 2013-06-17 | 2013-11-06 | 成都荣耀科技有限公司 | Module for amplifying acquired signals of air conditioning control subsystem of transformer substation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106371384A (en) * | 2016-09-07 | 2017-02-01 | 深圳市中科智诚科技有限公司 | Intelligent monitoring system based on wireless communication technology |
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Application publication date: 20130911 |