CN103279050A - Front signal amplification module of transformer substation water pump intelligent control system - Google Patents
Front signal amplification module of transformer substation water pump intelligent control system Download PDFInfo
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- CN103279050A CN103279050A CN2013102373295A CN201310237329A CN103279050A CN 103279050 A CN103279050 A CN 103279050A CN 2013102373295 A CN2013102373295 A CN 2013102373295A CN 201310237329 A CN201310237329 A CN 201310237329A CN 103279050 A CN103279050 A CN 103279050A
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Abstract
The invention discloses a front signal amplification module of a transformer substation water pump intelligent control system. The front signal amplification module of the transformer substation water pump intelligent control system comprises a first triode, a second resistor, a fifth resistor, a first capacitor and a first operational amplifier, wherein the base electrode of the first triode is connected with a collected-signal input line, one end of the fifth resistor is connected with the collector electrode of the first triode, and the other end of the fifth resistor is connected with a power source. One end of the second resistor is connected with the emitting electrode of the first triode, and the other end of the second resistor is earthed. One end of the first capacitor is connected to a line arranged between the emitting electrode of the first triode and the second resistor, the other end of the first capacitor is connected with the non-inverting input end of the first operational amplifier, and the output end of the first operational amplifier is connected with the signal amplifying output line. The front signal amplification module of the transformer substation water pump intelligent control system is simple in overall structure, easy to achieve, and capable of not only amplifying a signal collected by a sensor but also reducing loss of the collected signal in the process of transmitting.
Description
Technical field
The present invention relates to intelligent substation control technology field, specifically is signal amplification module preposition in the substation water pump intelligence 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 water pump intelligence control system.Wherein, the signal that the water pump intelligence 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 water pump intelligence control system monitors and when transmitting in the line loss bigger, the weak output signal that this can cause water pump intelligence 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 be to gathering preposition signal amplification module in the substation water pump intelligence control system that signal amplifies.
Purpose of the present invention is achieved through the following technical solutions: preposition signal amplification module in the substation water pump intelligence control system, comprise first triode, second resistance, the 5th resistance, first electric capacity and first operational amplifier, the base stage of described first triode is connected with the collection signal input line, described the 5th resistance one end is connected with first transistor collector, and its other end is connected with power supply; Described second resistance, one end is connected its other end ground connection with first transistor emitter; Described first electric capacity, one end is connected on the circuit between first transistor emitter and second resistance, and its other end is connected with the first operational amplifier in-phase input end, and the output terminal of described first 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.
Preposition signal amplification module in the substation water pump intelligence control system also comprises first resistance, and described first resistance, one end is connected gathers on the signal input line its other end ground connection.
Preposition signal amplification module in the substation water pump intelligence control system also comprises the 4th resistance, and described the 4th resistance one end is connected on the circuit between first electric capacity and the first operational amplifier in-phase input end, its other end ground connection.
Preposition signal amplification module in the substation water pump intelligence control system also comprises second electric capacity and the 6th resistance, and described second electric capacity is connected with output terminal with the first operational amplifier inverting input respectively with the 6th resistance parallel branch two ends that constitute in parallel.Wherein, second electric capacity is used for high frequency noise and the spike burr of filtered signal.
Preposition signal amplification module in the substation water pump intelligence control system also comprises the 3rd resistance, and described the 3rd resistance one end is connected its other end ground connection with the first operational amplifier reverse input end.
As preferably, described first triode is the NPN triode.
Compared with prior art, the present invention has following beneficial effect: the base stage of first triode is connected with the collection signal input line among the present invention, the 5th resistance one end is connected with first transistor collector, its other end is connected with power supply, second resistance, one end is connected with first transistor emitter, its other end ground connection, so, first triode plays the effect of voltage follow, it has high input impedance, cooperate first operational amplifier when work, can reduce the wastage when gathering signal amplifying, and then can avoid the collection weak output signal of water pump intelligence control system middle controller input and influence Based Intelligent Control.
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, the 5th resistance, R6, the 6th resistance, C1, first electric capacity, C2, second electric capacity, A1, first operational amplifier, Q1, first triode, 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, preposition signal amplification module in the substation water pump intelligence control system, comprise the first triode Q1, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, first capacitor C 1 and first operational amplifier A 1, wherein, the first triode Q1 is the NPN triode, the base stage of the first triode Q1 is connected with collection signal input line 1, the first resistance R 1 one ends and is connected on the collection signal input line 1 its other end ground connection.Second resistance R, 2 one ends are connected its other end ground connection with the first triode Q1 emitter.The 3rd resistance R 3 one ends are connected its other end ground connection with first operational amplifier A, 1 reverse input end.The 5th resistance R 5 one ends are connected with the first triode Q1 collector, and its other end is connected with power supply VCC.First capacitor C, 1 one ends are connected on the circuit between the first triode Q1 emitter and second resistance R 2, and its other end is connected with first operational amplifier A, 1 in-phase input end, and the output terminal of first operational amplifier A 1 is connected with amplifying signal output line 2.The 4th resistance R 4 one ends are connected on the circuit between first capacitor C 1 and first operational amplifier A, 1 in-phase input end, its other end ground connection.
Preposition signal amplification module in the substation water pump intelligence control system, comprise that also second capacitor C 2 and the 6th resistance R 6, the second capacitor C 2 are connected with output terminal with first operational amplifier A, 1 inverting input respectively with the 6th resistance R 6 parallel branch two ends that constitute in parallel.
When present embodiment is used, gather signal input line 1 and connect the other end of the first triode Q1 base terminal relatively for connecting sensor, and amplifying signal output line 2 is used for connecting the controller of water pump intelligence control system, gathers signal and finishes signal after through the first triode Q1 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 (6)
1. preposition signal amplification module in the substation water pump intelligence control system, it is characterized in that: comprise first triode (Q1), second resistance (R2), the 5th resistance (R5), first electric capacity (C1) and first operational amplifier (A1), the base stage of described first triode (Q1) is connected with gathers signal input line (1), described the 5th resistance (R5) end is connected with first triode (Q1) collector, and its other end is connected with power supply (VCC); Described second resistance (R2) end is connected its other end ground connection with first triode (Q1) emitter; Described first electric capacity (C1) end is connected on the circuit between first triode (Q1) emitter and second resistance (R2), its other end is connected with first operational amplifier (A1) in-phase input end, and the output terminal of described first operational amplifier (A1) is connected with amplifying signal output line (2).
2. preposition signal amplification module in the substation water pump intelligence control system according to claim 1, it is characterized in that: also comprise first resistance (R1), described first resistance (R1) end is connected gathers on the signal input line (1) its other end ground connection.
3. preposition signal amplification module in the substation water pump intelligence control system according to claim 1, it is characterized in that: also comprise the 4th resistance (R4), described the 4th resistance (R4) end is connected on the circuit between first electric capacity (C1) and first operational amplifier (A1) in-phase input end, its other end ground connection.
4. preposition signal amplification module in the substation water pump intelligence control system according to claim 1, it is characterized in that: also comprise second electric capacity (C2) and the 6th resistance (R6), described second electric capacity (C2) is connected with output terminal with first operational amplifier (A1) inverting input respectively with the 6th resistance (R6) the parallel branch two ends that constitute in parallel.
5. preposition signal amplification module in the substation water pump intelligence control system according to claim 4, it is characterized in that: also comprise the 3rd resistance (R3), described the 3rd resistance (R3) end is connected its other end ground connection with first operational amplifier (A1) reverse input end.
6. according to preposition signal amplification module in any described substation water pump intelligence control system in the claim 1～5, it is characterized in that: described first triode (Q1) is the NPN triode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102373295A CN103279050A (en) | 2013-06-17 | 2013-06-17 | Front signal amplification module of transformer substation water pump intelligent control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102373295A CN103279050A (en) | 2013-06-17 | 2013-06-17 | Front signal amplification module of transformer substation water pump intelligent control system |
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| CN2013102373295A Pending CN103279050A (en) | 2013-06-17 | 2013-06-17 | Front signal amplification module of transformer substation water pump intelligent control system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201138439Y (en) * | 2007-12-28 | 2008-10-22 | 毛建良 | Customer integrated automation data acquisition system |
| CN101902077A (en) * | 2010-07-13 | 2010-12-01 | 杭州交联电气工程有限公司 | Operating data monitoring and alarming system of converting stations |
| US20120121106A1 (en) * | 2009-06-11 | 2012-05-17 | Analog Devices, Inc. | Distortion suppression in high-level capable audio amplification 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 |
-
2013
- 2013-06-17 CN CN2013102373295A patent/CN103279050A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201138439Y (en) * | 2007-12-28 | 2008-10-22 | 毛建良 | Customer integrated automation data acquisition system |
| US20120121106A1 (en) * | 2009-06-11 | 2012-05-17 | Analog Devices, Inc. | Distortion suppression in high-level capable audio amplification circuit |
| CN101902077A (en) * | 2010-07-13 | 2010-12-01 | 杭州交联电气工程有限公司 | Operating data monitoring and alarming system of converting stations |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 韦建英等: "《模拟电子技术》", 31 August 2010, article "模拟电子技术" * |
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Application publication date: 20130904 |