CN103281058A - Signal comparison module for infrared transformer anti-theft system - Google Patents
Signal comparison module for infrared transformer anti-theft system Download PDFInfo
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- CN103281058A CN103281058A CN2013101758360A CN201310175836A CN103281058A CN 103281058 A CN103281058 A CN 103281058A CN 2013101758360 A CN2013101758360 A CN 2013101758360A CN 201310175836 A CN201310175836 A CN 201310175836A CN 103281058 A CN103281058 A CN 103281058A
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Abstract
The invention discloses a signal comparison module for an infrared transformer anti-theft system. The signal comparison module comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a first triode, a first comparator and a comparison signal output line, wherein one end of the first capacitor is connected with an amplification signal input line; the second resistor is connected with a first voltage input line; one end of the fifth resistor is connected with a second voltage input line; and one end of the comparison signal output line is connected to the second voltage input line. By adopting the structure, the whole signal comparison module is simple in structure and convenient to implement; during the application, the stability of outputting a comparison signal can be guaranteed through debugging; and the signal comparison module is convenient to popularize and apply.
Description
Technical field
The present invention relates to the transformer anti-theft technology, specifically is the signal comparison module of infrared 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.Often adopt infrared ray sensor to respond to the robber in the transformer anti-theft system and swarm into signal, in case the robber swarms in the scope of monitoring, after infrared ray sensor monitors signal, send a faint alternating signal, this signal communication amplifies the back and compares with reference voltage, and burglary-resisting system is sent corresponding control signal according to the level of relatively back generation.In the existing transformer anti-theft system signal and the reference voltage that collects compared designed circuit structure complexity, and when using, usually can not guarantee the stable of comparison signal.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, the signal comparison module of a kind of infrared transformer anti-theft system is provided, its overall structure is simple, is convenient to realize, and can guarantees that when using comparison signal output is stable.
Purpose of the present invention is achieved through the following technical solutions: the signal comparison module of infrared transformer anti-theft system, comprise first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, first electric capacity, first triode, first comparator and comparison signal outlet line, described first electric capacity, one end is connected with the amplifying signal incoming line, its other end is connected with the in-phase input end of first comparator, the described first resistance two ends are connected with second resistance with the first comparator inverting input respectively, the other end that described second resistance connects first resistance terminal relatively is connected with the first voltage input line road, described the 3rd resistance one end is connected on the circuit between first resistance and the first comparator inverting input, its other end ground connection; Described the 4th resistance two ends are connected with first transistor base with first comparator output terminal respectively, described the 5th resistance one end is connected with first transistor collector, the one end is connected with the second voltage input line road, described comparison signal outlet line one end is connected on the second voltage input line road, the grounded emitter of described first triode.When the present invention uses, the first voltage input line road is used for connecting reference power supply, the second voltage input line road also is used for connecting power supply, the amplifying signal incoming line is used for the monitor signal of input after amplifying, and monitor signal is through comparing and changing the back by first triode and exported by the comparison signal outlet line.Wherein, first resistance, second resistance and the 3rd resistance constitute reference voltage circuit.
The signal comparison module of infrared transformer anti-theft system also comprises first diode, and the positive pole of described first diode is connected on the circuit between first resistance and second resistance, the minus earth of first diode.The present invention is by setting up first diode, and the moment that disconnects reference power supply in the time of avoiding the present invention to use is caused damage to first comparator.
For the ease of reference voltage circuit is regulated, as preferably, described the 3rd resistance is adjustable resistance.
As preferably, the resistance of described the 3rd resistance is 0～100K Ω.
As preferably, described first triode is the NPN triode.
Compared with prior art, the present invention has following beneficial effect: the present invention includes first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, first electric capacity, first triode and first comparator, integral member is less, be convenient to realize, first resistance of the present invention, second resistance and the 3rd resistance constitute reference voltage circuit, when using, can regulate reference voltage circuit by regulating the 3rd resistance, and then guarantee the stable of output comparison signal; Change comparing the back level signal by first triode when the present invention uses, can prevent that the controller due to leakage current of burglary-resisting system from damaging greatly.
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: R1, first resistance, R2, second resistance, R3, the 3rd resistance, R4, the 4th resistance, R5, the 5th resistance, D1, first diode, U1, first comparator, C1, first electric capacity, 1, amplifying signal incoming line, 2, comparison signal outlet line, 3, the first voltage input line road, 4, the second voltage input line road.
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.
As shown in Figure 1, the signal comparison module of infrared transformer anti-theft system, comprise first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the first diode D1, first capacitor C 1, the first triode Q1, the first comparator U1 and comparison signal outlet line 2, wherein, first capacitor C, 1 one ends are connected with amplifying signal incoming line 1, and its other end is connected with the in-phase input end of the first comparator U1.First resistance R, 1 two ends are connected with second resistance R 2 with the first comparator U1 inverting input respectively, and the other end that second resistance R 2 connects first resistance R, 1 end relatively is connected with the first voltage input line road 3.The 3rd resistance R 3 is adjustable resistance, and the 3rd resistance R 3 one ends are connected on the circuit between first resistance R 1 and the first comparator U1 inverting input, its other end ground connection.The positive pole of the first diode D1 is connected on the circuit between first resistance R 1 and second resistance R 2, the minus earth of the first diode D1.
The 4th resistance R 4 two ends are connected with the first triode Q1 base stage with the first comparator U1 output respectively, the 5th resistance R 5 one ends are connected with the first triode Q1 collector electrode, the one end is connected with the second voltage input line road 4, and comparison signal outlet line 2 one ends are connected on the second voltage input line road 4.The first triode Q1 is the NPN triode, the grounded emitter of the first triode Q1.
The first comparator U1 preferably adopts LM324 to realize in the present embodiment, the resistance of the 3rd resistance R 3 is 0～100K Ω, and the resistance of first resistance R 1 and second resistance R 2 is 10K Ω, and the resistance of the 4th resistance R 4 is 6.8K Ω, the resistance of the 5th resistance R 5 is 15 K Ω, and first capacitor C, 1 appearance value is 22uF.When originally practicing, comparison by the first comparator U1, output level is amplifier operating voltage high level 5V, the first triode Q1 conducting, the first triode Q1 converts the output signal of the first comparator U1 entry level signal of controller to, low level input controller, and controller is preferably the AT89S53 single-chip microcomputer, make controller withdraw from low power consumpting state for low level of single controller, wake the circuit of whole burglary-resisting system simultaneously up; And when not reporting to the police, the high level for continuing of input controller.During debugging, the people walks about before infrared ray sensor, adjusts the 3rd resistance R 3, is low level signal up to the signal to the controller input.
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 execution modes that draw under the technical scheme of the present invention, all should be included in protection scope of the present invention.
Claims (5)
1. the signal comparison module of infrared transformer anti-theft system, it is characterized in that: comprise first resistance (R1), second resistance (R2), the 3rd resistance (R3), the 4th resistance (R4), the 5th resistance (R5), first electric capacity (C1), first triode (Q1), first comparator (U1) and comparison signal outlet line (2), described first electric capacity (C1) end is connected with amplifying signal incoming line (1), its other end is connected with the in-phase input end of first comparator (U1), described first resistance (R1) two ends are connected with second resistance (R2) with first comparator (U1) inverting input respectively, the other end that described second resistance (R2) connects first resistance (R1) end relatively is connected with the first voltage input line road (3), described the 3rd resistance (R3) end is connected on the circuit between first resistance (R1) and first comparator (U1) inverting input, its other end ground connection; Described the 4th resistance (R4) two ends are connected with first triode (Q1) base stage with first comparator (U1) output respectively, described the 5th resistance (R5) end is connected with first triode (Q1) collector electrode, the one end is connected with the second voltage input line road (4), described comparison signal outlet line (2) one ends are connected on the second voltage input line road (4), the grounded emitter of described first triode (Q1).
2. the signal comparison module of infrared transformer anti-theft according to claim 1 system, it is characterized in that: also comprise first diode (D1), the positive pole of described first diode (D1) is connected on the circuit between first resistance (R1) and second resistance (R2), the minus earth of first diode (D1).
3. the signal comparison module of infrared transformer anti-theft according to claim 1 system, it is characterized in that: described the 3rd resistance (R3) is adjustable resistance.
4. the signal comparison module of infrared transformer anti-theft according to claim 3 system, it is characterized in that: the resistance of described the 3rd resistance (R3) is 0～100K Ω.
5. according to the signal comparison module of any described infrared transformer anti-theft system in the claim 1～4, it is characterized in that: described first triode (Q1) is the NPN triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101758360A CN103281058A (en) | 2013-05-14 | 2013-05-14 | Signal comparison module for infrared transformer anti-theft system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101758360A CN103281058A (en) | 2013-05-14 | 2013-05-14 | Signal comparison module for infrared transformer anti-theft system |
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| Publication Number | Publication Date |
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| CN103281058A true CN103281058A (en) | 2013-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013101758360A Pending CN103281058A (en) | 2013-05-14 | 2013-05-14 | Signal comparison module for infrared transformer anti-theft system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2004582A1 (en) * | 1988-12-06 | 1990-06-06 | Richard L. Wilder | Motion detector |
| CN202495121U (en) * | 2012-02-28 | 2012-10-17 | 成都措普科技有限公司 | Infrared detection burglar alarm |
| CN202748896U (en) * | 2012-06-06 | 2013-02-20 | 成都掌握移动信息技术有限公司 | Low-cost infrared detection anti-theft alarm |
| CN202816061U (en) * | 2012-04-19 | 2013-03-20 | 河北省电力研究院 | An antitheft alarm and tracking system used for a distribution transformer |
-
2013
- 2013-05-14 CN CN2013101758360A patent/CN103281058A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2004582A1 (en) * | 1988-12-06 | 1990-06-06 | Richard L. Wilder | Motion detector |
| CN202495121U (en) * | 2012-02-28 | 2012-10-17 | 成都措普科技有限公司 | Infrared detection burglar alarm |
| CN202816061U (en) * | 2012-04-19 | 2013-03-20 | 河北省电力研究院 | An antitheft alarm and tracking system used for a distribution transformer |
| CN202748896U (en) * | 2012-06-06 | 2013-02-20 | 成都掌握移动信息技术有限公司 | Low-cost infrared detection anti-theft alarm |
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Application publication date: 20130904 |