CN203232530U - Signal comparison circuit for infrared-monitoring antitheft system of transformer - Google Patents
Signal comparison circuit for infrared-monitoring antitheft system of transformer Download PDFInfo
- Publication number
- CN203232530U CN203232530U CN 201320258450 CN201320258450U CN203232530U CN 203232530 U CN203232530 U CN 203232530U CN 201320258450 CN201320258450 CN 201320258450 CN 201320258450 U CN201320258450 U CN 201320258450U CN 203232530 U CN203232530 U CN 203232530U
- Authority
- CN
- China
- Prior art keywords
- resistance
- resistor
- terminal
- signal
- comparer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Burglar Alarm Systems (AREA)
Abstract
The utility model discloses a signal comparison circuit for an infrared-monitoring antitheft system of a transformer, and the comparison circuit comprises a first resistor, a second resistor, a third resistor, a first capacitor, and a first comparator. One terminal of the first capacitor is connected with an amplified-signal input line, and the other terminal of the first capacitor is connected with the non-inverting input terminal of the first comparator. Two terminals of the first resistor are respectively connected with the second resistor and the inverting input terminal of the first comparator. The other terminal, opposite to the terminal connected with the first resistor, of the second resistor is connected with a reference-voltage input line. One terminal of the third resistor is connected to a line between the first resistor and the inverting input terminal of the first comparator, and the other terminal of the third resistor is grounded. The output terminal of the first comparator is connected with a comparison-signal output line. The comparison circuit is simple in integral structure and convenient to accomplish by employing the above structure. The comparison circuit in use is capable of keeping the output of comparison signals stable by debugging, and convenient for popularization and application.
Description
Technical field
The utility model relates to the transformer anti-theft technology, specifically is the signal comparator circuit for infrared monitoring 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.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of signal comparator circuit for infrared monitoring transformer anti-theft system is provided, and its one-piece construction is simple, is convenient to realize, and can guarantees that when using comparison signal output is stable.
The purpose of this utility model is achieved through the following technical solutions: the signal comparator circuit that is used for infrared monitoring transformer anti-theft system, comprise first resistance, second resistance, the 3rd resistance, first electric capacity and first comparer, 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 comparer, the described first resistance two ends are connected with the inverting input of second resistance with first comparer respectively, the other end that described second resistance connects first resistance terminal relatively is connected with the reference voltage incoming line, described the 3rd resistance one end is connected on the circuit between first resistance and the first comparer inverting input, its other end ground connection, the output terminal of described first comparer is connected with the comparison signal outlet line.When the utility model was used, the reference voltage incoming line was used for connecting reference power supply, and the amplifying signal incoming line is used for the monitor signal of input after amplifying, and through the utility model relatively the level of back generation export through the comparison signal outlet line.Wherein, first resistance, second resistance and the 3rd resistance constitute reference voltage circuit.
Be used for the signal comparator circuit of infrared monitoring transformer anti-theft system, also comprise first diode, 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 utility model is by setting up first diode, and the moment that disconnects reference power supply in the time of avoiding the utility model to use is caused damage to first comparer.
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.
Compared with prior art, the utlity model has following beneficial effect: the utility model comprises first resistance, second resistance, the 3rd resistance, first electric capacity and first comparer, integral member is less, be convenient to realize, first resistance of the present utility model, 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.
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: R1, first resistance, R2, second resistance, R3, the 3rd resistance, D1, first diode, U1, first comparer, C1, first electric capacity, 1, amplifying signal incoming line, 2, the comparison signal outlet line, 3, the reference voltage incoming 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.
As shown in Figure 1, the signal comparator circuit that is used for infrared monitoring transformer anti-theft system, comprise first resistance R 1, second resistance R 2, the 3rd resistance R 3, the first diode D1, first capacitor C 1 and the first comparer U1, 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 comparer U1.First resistance R, 1 two ends are connected with the inverting input of second resistance R 2 and the first comparer U1 respectively, and the other end that second resistance R 2 connects first resistance R, 1 end relatively is connected with reference voltage incoming line 3, and reference voltage incoming line 3 is used for connecting reference power supply.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 comparer U1 inverting input, its other end ground connection, and the output terminal of the first comparer U1 is connected with comparison signal outlet line 2.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 first comparer U1 preferably adopts LM324 to realize that the resistance of the 3rd resistance R 3 is 0～100K Ω in the present embodiment, and the resistance of first resistance R 1 and second resistance R 2 is 10K Ω, and first capacitor C, 1 appearance value is 22uF.When originally practicing, comparison by the first comparer U1, output level is amplifier operating voltage high level 5V, control system withdraws from low power consumpting state in this signal triggering burglary-resisting system, wake the circuit of whole burglary-resisting system simultaneously up, and when not reporting to the police, the low level for continuing of input control system.During debugging, the people walks about before infrared ray sensor, adjusts the 3rd resistance R 3, and the signal of importing up to control system in burglary-resisting system is high level signal.
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 (4)
1. the signal comparator circuit that is used for infrared monitoring transformer anti-theft system, it is characterized in that: comprise first resistance (R1), second resistance (R2), the 3rd resistance (R3), first electric capacity (C1) and first comparer (U1), 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 comparer (U1), described first resistance (R1) two ends are connected with the inverting input of second resistance (R2) with first comparer (U1) respectively, the other end that described second resistance (R2) connects first resistance (R1) end relatively is connected with reference voltage incoming line (3), described the 3rd resistance (R3) end is connected on the circuit between first resistance (R1) and first comparer (U1) inverting input, its other end ground connection, the output terminal of described first comparer (U1) is connected with comparison signal outlet line (2).
2. the signal comparator circuit for infrared monitoring transformer anti-theft system according to claim 1, 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 comparator circuit for infrared monitoring transformer anti-theft system according to claim 1 and 2, it is characterized in that: described the 3rd resistance (R3) is adjustable resistance.
4. the signal comparator circuit for infrared monitoring transformer anti-theft system according to claim 3, it is characterized in that: the resistance of described the 3rd resistance (R3) is 0～100K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320258450 CN203232530U (en) | 2013-05-14 | 2013-05-14 | Signal comparison circuit for infrared-monitoring antitheft system of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320258450 CN203232530U (en) | 2013-05-14 | 2013-05-14 | Signal comparison circuit for infrared-monitoring antitheft system of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203232530U true CN203232530U (en) | 2013-10-09 |
Family
ID=49288638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320258450 Expired - Fee Related CN203232530U (en) | 2013-05-14 | 2013-05-14 | Signal comparison circuit for infrared-monitoring antitheft system of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203232530U (en) |
-
2013
- 2013-05-14 CN CN 201320258450 patent/CN203232530U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106356978B (en) | Intelligent solar charger | |
| CN204046140U (en) | Inverse probability peculiar to vessel and overcurrent protection module | |
| CN204696784U (en) | A kind of mobile communication base station storage battery access control apparatus | |
| CN203232530U (en) | Signal comparison circuit for infrared-monitoring antitheft system of transformer | |
| CN203232531U (en) | Signal comparison circuit of antitheft system of infrared transformer | |
| CN202708270U (en) | Electromagnetic valve control circuit | |
| CN205921443U (en) | Battery supply set pre -emergency electric access protection system | |
| CN103268683A (en) | Circuit of amplifying signal in transformer anti-theft monitoring system | |
| CN204789741U (en) | A voltage detecting system for domestic intelligent power distribution system | |
| CN103280051A (en) | Monitoring subsystem for preventing transformer theft | |
| CN204315004U (en) | Aerial cable circuit anti-theft prewarning system | |
| CN203352155U (en) | Microcomputer monitoring protecting device for current transformer | |
| CN103296721A (en) | Mobile phone charging software | |
| CN203232529U (en) | Antitheft device of a transformer | |
| CN103281058A (en) | Signal comparison module for infrared transformer anti-theft system | |
| CN203232527U (en) | Amplifying circuit for detection signals in antitheft system of transformer | |
| CN108270911A (en) | A kind of house security management system based on smart mobile phone | |
| CN208411472U (en) | Battery monitoring unit watchdog circuit | |
| CN206789000U (en) | Intelligent door sensor monitoring system | |
| CN105953842A (en) | Secondary equipment for monitoring partial discharge and temperature monitoring device | |
| CN203232525U (en) | Signal amplifying circuit in antitheft monitoring system of transformer | |
| CN203232528U (en) | Monitoring subsystem for antitheft system of transformer | |
| CN204856796U (en) | Electric fire monitored control system based on thing networking | |
| CN203561667U (en) | Electricity larceny prevention device | |
| CN203232524U (en) | Module for amplifying infrared detection signal in antitheft system of transformer |
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 |