CN203232524U - Module for amplifying infrared detection signal in antitheft system of transformer - Google Patents
Module for amplifying infrared detection signal in antitheft system of transformer Download PDFInfo
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- CN203232524U CN203232524U CN 201320258352 CN201320258352U CN203232524U CN 203232524 U CN203232524 U CN 203232524U CN 201320258352 CN201320258352 CN 201320258352 CN 201320258352 U CN201320258352 U CN 201320258352U CN 203232524 U CN203232524 U CN 203232524U
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- operational amplifier
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- transformer
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Abstract
The utility model discloses a module for amplifying an infrared detection signal in an antitheft system of a transformer, and the module comprises an infrared sensor (J1), a first capacitor (C1), a second resistor (R2), a first operational amplifier (A1), and an amplified signal output line (3), wherein two terminals of the first capacitor (C1) are respectively connected with the infrared sensor (J1) and the second resistor (R2). The other terminal, opposite to the terminal connected with the first capacitor (C1), of the second resistor (R2) is connected with the non-inverting input terminal of the operational amplifier (A1). The amplified signal output line (3) is connected with the output terminal of the operational amplifier (A1). When the module is used in an antitheft system of a transformer, the infrared signals collected by the infrared sensor (J1) is coupled by the first capacitor (C1), and then amplified by the first operational amplifier (A1). In this way, it is convenient for a control system in the antitheft system to make a correct judgment in order to guarantee the formal application of the infrared antitheft system of the transformer and reinforce antitheft performance.
Description
Technical field
The utility model relates to a kind of burglary-resisting system, specifically is the module of amplifying the infrared acquisition signal in the transformer anti-theft system.
Background technology
In recent years, the stolen phenomenon of electric power facility takes place often, and this is not only threatening the safe operation of electrical network, has also had a strong impact on industrial and agricultural production and the people's household electricity.In order to ensure the reliability service of electrical network, improve the theftproof performance of electric power facility self, reduce the stolen event of electric power facility to greatest extent, this becomes present people's question of common concern.
The ratio of in the electric power facility theft transformer integral body being stolen or stolen copper core in the transformer is higher, and therefore, solving the stolen problem of transformer becomes an important step that prevents that electric power facility is stolen.Transformer anti-theft adopts infrared sensor to survey the infrared signal that human body radiation goes out often, and make corresponding judgement by control system according to the signal that detects, indicate the joint defence personnel to rush towards the scene when control system has the lawless person to get involved as if affirmation the lawless person is admonished, and then prevent that the lawless person from stealing transformer.Yet, fainter when infrared sensor is exported the signal that detects, be not easy to control system and make corresponding judgement, this can have influence on the theftproof performance of existing transformer anti-theft system.
The utility model content
The purpose of this utility model is to solve existing transformer anti-theft system influences the problem that control system is made judgement because infrared sensor output infrared signal is faint, the module of amplifying the infrared acquisition signal in a kind of transformer anti-theft system is provided, can amplify the infrared signal of infrared sensor output when it is used, guarantee that burglary-resisting system makes right judgement.
The purpose of this utility model is achieved through the following technical solutions: the module of amplifying the infrared acquisition signal in the transformer anti-theft system, comprise infrared sensor, first electric capacity, second resistance, first operational amplifier and amplifying signal outlet line, the described first electric capacity two ends are connected with second resistance with infrared sensor respectively, the other end that described second resistance connects first capacitance terminal relatively is connected with the in-phase input end of first operational amplifier, and described amplifying signal outlet line is connected with the output terminal of first operational amplifier.Wherein, first electric capacity is as coupling capacitance, the signal that infrared sensor collected when the utility model was used is through first capacitive coupling, and signal after coupling is imported in first operational amplifier and amplified, and the signal after the amplification is then exported from the amplifying signal outlet line.
Amplify the module of infrared acquisition signal in the transformer anti-theft system, also comprise the 4th resistance and second electric capacity, described the 4th resistance formation first parallel branch in parallel with second electric capacity, the described first parallel branch two ends are connected with output terminal with the inverting input of first operational amplifier respectively, and described amplifying signal outlet line is connected on the circuit between first parallel branch and first operational amplifier output terminal.Wherein, the 4th resistance and second electric capacity constitute feedback circuit, and second electric capacity carries out filtering to feedback signal, by the feedback circuit that the 4th resistance and second electric capacity constitute, the stability in the time of improving the first operational amplifier amplifying signal.
Amplify the module of infrared acquisition signal in the transformer anti-theft system, also comprise the 3rd resistance, described the 3rd resistance one end is connected on first parallel branch and the connection line between first operational amplifier of the 4th resistance and second electric capacity formation, the other end ground connection of the 3rd resistance.Wherein, the 3rd resistance constitutes pull down resistor.
Described infrared sensor is connected with the first voltage input line road, and described first operational amplifier is connected with the second voltage input line road.When the utility model was used, the first voltage input line road and the second voltage input line road were all for external power supply.
Amplify the module of infrared acquisition signal in the transformer anti-theft system, also comprise first resistance, described first resistance, one end is connected its other end ground connection with circuit between infrared sensor and first electric capacity.Wherein, first resistance is as the source resistance of infrared sensor.
Described first resistance is adjustable resistance.Wherein, first resistance adopts adjustable resistance, is convenient to according to specific circumstances first resistance be regulated when the utility model is used, and is stable during the infrared sensor output signal when guaranteeing that the utility model is used.
Compared with prior art, the utlity model has following beneficial effect: the utility model comprises infrared sensor, first electric capacity, second resistance, first operational amplifier and amplifying signal outlet line, one-piece construction is simple, be convenient to realize, when the utility model is used if there is the lawless person to get involved the transformer scene, infrared sensor is gathered infrared signal and is exported ultra-weak electronic signal, faint electric signal through first capacitive coupling after the input first operational amplifier, first operational amplifier amplifies laggard line output to feeble signal, so, the control system of transformer anti-theft system is convenient to the electric signal that collects is compared, and then make accurate judgment, guarantee the normal use of transformer anti-theft system.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The corresponding name of Reference numeral is called in the accompanying drawing: J1, infrared sensor, R1, first resistance, R2, second resistance, R3, the 3rd resistance, R4, the 4th resistance, C1, first electric capacity, Q1, first operational amplifier, 1, the first voltage input line road, 2, the second voltage input line road, 3, the amplifying signal outlet line.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment
As shown in Figure 1, amplify the module of infrared acquisition signal in the transformer anti-theft system, comprise infrared sensor J1, first capacitor C 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4 and first operational amplifier A 1, wherein, infrared sensor J1 comprises D, S, three pins of G, the D pin is connected to the first voltage input line road 1 in succession, the first voltage input line road 1 is used for external power supply when using, the S pin is connected with first capacitor C 1, G pin ground connection, wherein, faint electric signal to the first capacitor C 1 of S pin output.Second resistance R, 2 two ends are connected with the in-phase input end of first capacitor C 1 and first operational amplifier A 1 respectively, and the output terminal of first operational amplifier A 1 is connected with amplifying signal outlet line 3.For the ease of first operational amplifier A 1 is powered, first operational amplifier A 1 is connected with the second voltage input line road 2 of external power supply.First resistance R 1 is adjustable resistance, and first resistance R, 1 one ends are connected on the circuit between infrared sensor J1 and first capacitor C 1, one end ground connection.
The 4th resistance R 4 and second capacitor C, 2 formation first parallel branches in parallel, the first parallel branch two ends are connected with output terminal with the inverting input of first operational amplifier A 1 respectively, and amplifying signal outlet line 3 specifically is connected on the circuit between first parallel branch and first operational amplifier A, 1 output terminal.The 3rd resistance R 3 one ends are connected on first parallel branch and the connection line between first operational amplifier A 1 of the 4th resistance R 4 and second capacitor C, 2 formations, the other end ground connection of the 3rd resistance R 3.
Infrared sensor J1 preferably adopts double base pyroelectric infrared sensor RE200B in the present embodiment, the resistance of first resistance R 1 is set in 0～47K Ω scope adjustable, first operational amplifier A, the 1 preferred LM324 that adopts, second resistance R, 2 resistances are set at 4.7K Ω, the resistance of the 3rd resistance R 3 is set at 10K Ω, the resistance of the 4th resistance R 4 is set at 300 K Ω, and first capacitor C, 1 appearance value is 47uF, and the appearance value of second capacitor C 2 is 0.01 uF.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that embodiment of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, not breaking away from other embodiments that draw under the technical solution of the utility model, all should be included in the protection domain of the present utility model.
Claims (6)
1. amplify the module of infrared acquisition signal in the transformer anti-theft system, it is characterized in that: comprise infrared sensor (J1), first electric capacity (C1), second resistance (R2), first operational amplifier (A1) and amplifying signal outlet line (3), described first electric capacity (C1) two ends are connected with second resistance (R2) with infrared sensor (J1) respectively, the other end that described second resistance (R2) connects first electric capacity (C1) end relatively is connected with the in-phase input end of first operational amplifier (A1), and described amplifying signal outlet line (3) is connected with the output terminal of first operational amplifier (A1).
2. the module of amplifying the infrared acquisition signal in the transformer anti-theft according to claim 1 system, it is characterized in that: also comprise the 4th resistance (R4) and second electric capacity (C2), described the 4th resistance (R4) formation first parallel branch in parallel with second electric capacity (C2), the described first parallel branch two ends are connected with output terminal with the inverting input of first operational amplifier (A1) respectively, and described amplifying signal outlet line (3) is connected on the circuit between first parallel branch and first operational amplifier (A1) output terminal.
3. the module of amplifying the infrared acquisition signal in the transformer anti-theft according to claim 2 system, it is characterized in that: also comprise the 3rd resistance (R3), described the 3rd resistance (R3) end is connected on first parallel branch and the connection line between first operational amplifier (A1) of the 4th resistance (R4) and second electric capacity (C2) formation, the other end ground connection of the 3rd resistance (R3).
4. the module of amplifying the infrared acquisition signal in the transformer anti-theft according to claim 1 system, it is characterized in that: described infrared sensor (J1) is connected with the first voltage input line road (1), and described first operational amplifier (A1) is connected with the second voltage input line road.
5. according to the module of amplifying the infrared acquisition signal in any described transformer anti-theft system in the claim 1～4, it is characterized in that: also comprise first resistance (R1), described first resistance (R1) end is connected its other end ground connection with circuit between infrared sensor (J1) and first electric capacity (C1).
6. the module of amplifying the infrared acquisition signal in the transformer anti-theft according to claim 5 system, it is characterized in that: described first resistance (R1) is adjustable resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320258352 CN203232524U (en) | 2013-05-14 | 2013-05-14 | Module for amplifying infrared detection signal in antitheft system of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320258352 CN203232524U (en) | 2013-05-14 | 2013-05-14 | Module for amplifying infrared detection signal in antitheft system of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203232524U true CN203232524U (en) | 2013-10-09 |
Family
ID=49288632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320258352 Expired - Fee Related CN203232524U (en) | 2013-05-14 | 2013-05-14 | Module for amplifying infrared detection signal in antitheft system of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203232524U (en) |
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2013
- 2013-05-14 CN CN 201320258352 patent/CN203232524U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20140514 |