CN103280054A - Transformer anti-theft system of low-voltage electric power circuit - Google Patents
Transformer anti-theft system of low-voltage electric power circuit Download PDFInfo
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- CN103280054A CN103280054A CN2013102078133A CN201310207813A CN103280054A CN 103280054 A CN103280054 A CN 103280054A CN 2013102078133 A CN2013102078133 A CN 2013102078133A CN 201310207813 A CN201310207813 A CN 201310207813A CN 103280054 A CN103280054 A CN 103280054A
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Abstract
The invention discloses a transformer anti-theft system of a low-voltage electric power circuit. The transformer anti-theft system comprises an isolation transformer, a rectification unit, a filter circuit, a voltage-stabilizing circuit, a rechargeable battery and an alarm circuit, wherein the isolation transformer is connected with a phase line input line and a null line input line, and a first relay is connected between the phase line input line and the null line input line. The voltage-stabilizing circuit comprises a first triode, a third resistor and a fourth voltage-stabilizing tube, the alarm circuit comprises a second resistor, a first loudspeaker and a light-emitting diode set, the light-emitting diode set comprises a plurality of light-emitting diodes in series connection and voltage-stabilizing tubes, the voltage-stabilizing tubes are the same as the light-emitting diodes in number, and each light-emitting diode corresponds to and is in parallel connection with a reverse voltage-stabilizing tube. The transformer anti-theft system is simple in overall structure, small in the number of components, and low in cost. In application, the transformer anti-theft system not only can be used for alarming in an area where joint defence staff are on duty but also can be used for warning lawless persons on a transformer site of the low-voltage electric power circuit, and has good anti-theft performance.
Description
Technical field
The present invention relates to the power circuit burglary-resisting installation, the warning device when specifically being antitheft for low tension wire.
Background technology
The reliable supply of the supply of electric power, particularly electric power safety is society, enterprise, the common people and media spotlight always.Because safety, stable, electric power supply reliably are concerning the development of national economy, concerning the construction of harmonious society, concerning the people's vital interests.Present most of electric power facility all is in the open air, and the stolen event of electric power facility frequently takes place.Wherein, stolen comparatively general at the transformer that the stolen event mesolow of electric power facility power circuit is supporting, the general cost of warning device when being used for the transformer anti-theft of low-voltage power line now is higher, and this has influenced applying of burglar alarm.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, transformer anti-theft system in a kind of low-voltage power line is provided, its one-piece construction is simple, be convenient to realize, with low cost, and can send warning when the transformer decompression.
Purpose of the present invention is achieved through the following technical solutions: transformer anti-theft system in the low-voltage power line, comprise warning circuit and the isolating transformer, rectification unit, filtering circuit, mu balanced circuit and the rechargeable battery that connect in turn, described isolating transformer is connected with phase line input line and zero line input line, is connected with first relay between described phase line input line and the zero line input line; Described mu balanced circuit comprises first triode, the 3rd resistance and the 4th stabilivolt, the collector and emitter of described first triode is connected with rechargeable battery is anodal with filtering circuit is anodal respectively, described the 3rd resistance one end is connected with circuit between first transistor collector and the filtering circuit positive pole, its other end is connected with the base stage of first triode, described the 4th stabilivolt negative pole is connected on the circuit between the 3rd resistance and first transistor base, and the 4th stabilivolt is anodal to be connected with the rechargeable battery negative pole; Described warning circuit comprises second resistance, first loudspeaker and light emitting diode group, described light emitting diode group comprises light emitting diode and the stabilivolt identical with light emitting diode quantity of a plurality of series connection, the stabilivolt of the corresponding reversal connection in parallel of each light emitting diode, the formation first connection in series-parallel branch road in parallel with first loudspeaker after described second resistance is connected with the light emitting diode group, the positive pole of the first connection in series-parallel branch road is connected with the positive pole of rechargeable battery, output switch one end of often opening of described first relay is connected with circuit between rechargeable battery negative pole and the filtering circuit, and its other end is connected with the negative pole of the first connection in series-parallel branch road.Wherein, phase line input line and zero line input line were connected on the outlet line of power circuit transformer when the present invention used, and often opened the keying of output switch and were controlled by first relay.
Described mu balanced circuit also comprises second electric capacity, and described second electric capacity, one end is connected with circuit between first transistor base and the 3rd resistance, and its other end is connected with the rechargeable battery negative pole.
As preferably, described first triode is the NPN triode.
Described rectification unit comprises two input ends and two output terminals, and two input ends of rectification unit are connected with isolating transformer, and two output terminals of rectification unit are connected with first transistor collector with the filtering circuit negative pole respectively.Wherein, when rectification unit was connected with isolating transformer, two input end and isolating transformer two output terminals connected one to one.
Described filtering circuit comprises first resistance and first electric capacity, described first resistance, one end is connected with the rectification unit output terminal, its other end is connected with the rechargeable battery negative pole, described first electric capacity, one end is connected with circuit between rectification unit output terminal and first resistance, and its other end is connected with circuit between rectification unit output terminal and first transistor collector.
As preferably, described rectification unit is bridge rectifier circuit.
Be in series with fusible link on the described phase line input line.Wherein, can avoid under the effect of fusible link that voltage input is too high to cause damage to components and parts of the present invention.
As preferably, described light emitting diode group comprises the light emitting diode of three series connection.
Compared with prior art, the present invention has following beneficial effect: (1) the present invention includes first relay, isolating transformer, rectification unit, filtering circuit, mu balanced circuit, rechargeable battery and warning circuit, wherein, isolating transformer comprises phase line input line and zero line input line, and warning circuit comprises second resistance, first loudspeaker and light emitting diode group, and one-piece construction of the present invention is simple, the use components and parts are few, be convenient to realize, with low cost, and then be convenient to of the present invention applying; Phase line input line and zero line input line were connected on the outlet line of power circuit transformer when the present invention used, the power circuit transformer charges to rechargeable battery after the rectification of voltage process rectification unit, filtering circuit filtering and the mu balanced circuit voltage stabilizing of isolating transformer output to first relay and isolating transformer power supply; The present invention is after the stolen decompression of power circuit transformer, first relay makes and often opens the output switch closure, rechargeable battery and warning circuit are connected and are that warning circuit is powered, lumination of light emitting diode in the light emitting diode group, simultaneously first loudspeaker sends alert notice joint defence personnel and rushes towards and on-the-spot the lawless person being admonished, and then can avoid in the low-voltage power line transformer stolen.
(2) light emitting diode group of the present invention comprises the light emitting diode of a plurality of series connection, and all be parallel with the stabilivolt of a reversal connection in the light emitting diode group on each light emitting diode, so, when the present invention uses, the branch road that stabilivolt in parallel constitutes on each light emitting diode constitutes the holding circuit of warning circuit, when the lamp pearl of certain light emitting diode is opened circuit, the stabilivolt in parallel with it devoted oneself to work, thereby can avoid circuit to open circuit, the present invention can avoid single light emitting diode to damage and the accuracy of influence indication when using, and has further improved the reliability when the present invention uses; When warning circuit has a plurality of light emitting diode, can improve luminous intensity, therefore, the present invention not only can be arranged on joint defence personnel office and be used for reporting to the police, also can be arranged on the transformer scene and when transformer is stolen, adopt acousto-optic in conjunction with coming the lawless person is warned, utilize namely that loudspeaker sounding and light emitting diode group are luminous to be warned the lawless person.
(3) mu balanced circuit of the present invention comprises first triode, the 3rd resistance and the 4th stabilivolt, when the present invention uses, the present invention utilizes the voltage clamper characteristic of stabilivolt, when the reverse voltage of the 4th stabilivolt reaches its breakdown voltage rating, avalanche type conducting effect will appear in the 4th stabilivolt, thereby clamp the voltage on the load voltage value, the present invention amplifies adjustment voltage by first triode again, and then finish voltage stabilizing requirement to charging voltage, so, can avoid unstable and cause rechargeable battery to damage to the charging voltage of rechargeable battery.
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, the phase line input line, 2, the zero line output line, 3, rectification unit, J1, first relay, B, isolating transformer, E, rechargeable battery, R1, first resistance, R2, second resistance, R3, the 3rd resistance, C1, first electric capacity, C2, second electric capacity, Q1, first triode, Y1, first loudspeaker, LED1, first light emitting diode, LED2, second light emitting diode, LED3, the 3rd light emitting diode, DW1, first stabilivolt, DW2, second stabilivolt, DW3, the 3rd stabilivolt, DW4, the 4th stabilivolt, KJ, often drive the output switch, FU, fusible link.
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, transformer anti-theft system in the low-voltage power line, comprise first relay J 1, isolating transformer B, rectification unit 3, filtering circuit, mu balanced circuit, rechargeable battery E and warning circuit, wherein, isolating transformer B is connected with phase line input line 1 and zero line input line 2, is in series with fusible link FU on the phase line input line 1.First relay J, 1 phase line input end is connected with zero line input line 2 with phase line input line 1 respectively with the zero line input end.Mu balanced circuit comprises the first triode Q1, the 3rd resistance R 3, the 4th stabilivolt DW4 and second capacitor C 2, and wherein, the first triode Q1 is the NPN triode.The collector and emitter of the first triode Q1 is connected with rechargeable battery E is anodal with filtering circuit is anodal respectively, the 3rd resistance R 3 one ends are connected with circuit between the first triode Q1 collector and the filtering circuit positive pole, its other end is connected with the base stage of the first triode Q1, the 4th stabilivolt DW4 negative pole is connected on the circuit between the 3rd resistance R 3 and the first triode Q1 base stage, and the 4th stabilivolt DW4 is anodal to be connected with rechargeable battery E negative pole.Second capacitor C, 2 one ends are connected with circuit between the first triode Q1 base stage and the 3rd resistance R 3, and its other end is connected with rechargeable battery E negative pole.
Rectification unit 3 comprises two input ends and two output terminals, and two input ends of rectification unit 3 are connected with isolating transformer B, and two output terminals of rectification unit 3 are connected with the first triode Q1 collector with the filtering circuit negative pole respectively.Wherein, rectification unit 3 is preferably bridge rectifier circuit in the present embodiment.Filtering circuit comprises first resistance R 1 and first capacitor C 1, first resistance R, 1 one ends are connected with rectification unit 3 output terminals, its other end is connected with rechargeable battery E negative pole, first capacitor C, 1 one ends are connected with circuit between rectification unit 3 output terminals and first resistance R 1, and its other end is connected with circuit between rectification unit 3 output terminals and the first triode Q1 collector.
Warning circuit comprises second resistance R 2, the first loudspeaker Y1 and light emitting diode group, wherein, the light emitting diode group comprises light emitting diode and the stabilivolt identical with light emitting diode quantity of a plurality of series connection, the stabilivolt of the corresponding reversal connection in parallel of each light emitting diode, the formation first connection in series-parallel branch road in parallel with the first loudspeaker Y1 after second resistance R 2 is connected with the light emitting diode group, the positive pole of the first connection in series-parallel branch road is connected with the positive pole of rechargeable battery E, output K switch J one end of often opening of first relay J 1 is connected with rechargeable battery E negative pole, and its other end is connected with the negative pole of the first connection in series-parallel branch road.The light emitting diode group preferably includes the light emitting diode of three series connection in the present embodiment, three light emitting diodes are respectively the first stabilivolt DW1, the second stabilivolt DW2 and the 3rd stabilivolt DW3 that is parallel with reversal connection on first LED 1, second LED 2 and 3, three light emitting diodes of the 3rd LED respectively.
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 (8)
1. transformer anti-theft system in the low-voltage power line, it is characterized in that: comprise warning circuit and the isolating transformer (B), rectification unit (3), filtering circuit, mu balanced circuit and the rechargeable battery (E) that connect in turn, described isolating transformer (B) is connected with phase line input line (1) and zero line input line (2), is connected with first relay (J1) between described phase line input line (1) and the zero line input line (2); Described mu balanced circuit comprises first triode (Q1), the 3rd resistance (R3) and the 4th stabilivolt (DW4), the collector and emitter of described first triode (Q1) is connected with rechargeable battery (E) is anodal with filtering circuit is anodal respectively, described the 3rd resistance (R3) end is connected with circuit between first triode (Q1) collector and the filtering circuit positive pole, its other end is connected with the base stage of first triode (Q1), described the 4th stabilivolt (DW4) negative pole is connected on the circuit between the 3rd resistance (R3) and first triode (Q1) base stage, and the 4th stabilivolt (DW4) is anodal to be connected with rechargeable battery (E) negative pole; Described warning circuit comprises second resistance (R2), first loudspeaker (Y1) and light emitting diode group, described light emitting diode group comprises light emitting diode and the stabilivolt identical with light emitting diode quantity of a plurality of series connection, the stabilivolt of the corresponding reversal connection in parallel of each light emitting diode, the formation first connection in series-parallel branch road in parallel with first loudspeaker (Y1) after described second resistance (R2) is connected with the light emitting diode group, the positive pole of the first connection in series-parallel branch road is connected with the positive pole of rechargeable battery (E), output switch (KJ) end of often opening of described first relay (J1) is connected with rechargeable battery (E) negative pole, and its other end is connected with the negative pole of the first connection in series-parallel branch road.
2. transformer anti-theft system in the low-voltage power line according to claim 1, it is characterized in that: described mu balanced circuit also comprises second electric capacity (C2), described second electric capacity (C2) end is connected with circuit between first triode (Q1) base stage and the 3rd resistance (R3), and its other end is connected with rechargeable battery (E) negative pole.
3. transformer anti-theft system in the low-voltage power line according to claim 1, it is characterized in that: described first triode (Q1) is the NPN triode.
4. transformer anti-theft system in the low-voltage power line according to claim 1, it is characterized in that: described rectification unit (3) comprises two input ends and two output terminals, two input ends of rectification unit (3) are connected with isolating transformer (B), and two output terminals of rectification unit (3) are connected with first triode (Q1) collector with the filtering circuit negative pole respectively.
5. transformer anti-theft system in the low-voltage power line according to claim 4, it is characterized in that: described filtering circuit comprises first resistance (R1) and first electric capacity (C1), described first resistance (R1) end is connected with rectification unit (3) output terminal, its other end is connected with rechargeable battery (E) negative pole, described first electric capacity (C1) end is connected with circuit between rectification unit (3) output terminal and first resistance (R1), and its other end is connected with circuit between rectification unit (3) output terminal and first triode (Q1) collector.
6. transformer anti-theft system in the low-voltage power line according to claim 4, it is characterized in that: described rectification unit (3) is bridge rectifier circuit.
7. according to transformer anti-theft system in any described low-voltage power line in the claim 1～6, it is characterized in that: be in series with fusible link (FU) on the described phase line input line (1).
8. according to transformer anti-theft system in any described low-voltage power line in the claim 1～6, it is characterized in that: described light emitting diode group comprises the light emitting diode of three series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102078133A CN103280054A (en) | 2013-05-30 | 2013-05-30 | Transformer anti-theft system of low-voltage electric power circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102078133A CN103280054A (en) | 2013-05-30 | 2013-05-30 | Transformer anti-theft system of low-voltage electric power circuit |
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| CN103280054A true CN103280054A (en) | 2013-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013102078133A Pending CN103280054A (en) | 2013-05-30 | 2013-05-30 | Transformer anti-theft system of low-voltage electric power circuit |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3910851A1 (en) * | 1989-04-04 | 1990-10-11 | Grothe & Soehne Kg A | Chime circuit |
| CN2146023Y (en) * | 1993-02-10 | 1993-11-10 | 张宝林 | Level self-control alarm |
| CN2544356Y (en) * | 2002-04-23 | 2003-04-09 | 杨建国 | Monitoring controlled camera |
| CN201307322Y (en) * | 2008-12-10 | 2009-09-09 | 蚌埠依爱消防电子有限责任公司 | Electric fire detector based on firefighting warning linkage bus |
| CN201478830U (en) * | 2009-09-10 | 2010-05-19 | 浙江工业大学浙西分校 | Phase sequence indicating and alarming device of three-phase power supply |
| CN201716802U (en) * | 2010-05-28 | 2011-01-19 | 黄传易 | Anti-theft alarm device for power line transformer |
| CN202634852U (en) * | 2012-07-03 | 2012-12-26 | 成都市宏山科技有限公司 | Linear constant-current LED (light-emitting diode) driver |
| CN202652594U (en) * | 2012-07-03 | 2013-01-02 | 成都市宏山科技有限公司 | Light emitting diode driver possessing protection path |
| CN203242090U (en) * | 2013-05-30 | 2013-10-16 | 成都荣耀科技有限公司 | Alarm for preventing transformer in low-voltage power line from being stolen |
-
2013
- 2013-05-30 CN CN2013102078133A patent/CN103280054A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3910851A1 (en) * | 1989-04-04 | 1990-10-11 | Grothe & Soehne Kg A | Chime circuit |
| CN2146023Y (en) * | 1993-02-10 | 1993-11-10 | 张宝林 | Level self-control alarm |
| CN2544356Y (en) * | 2002-04-23 | 2003-04-09 | 杨建国 | Monitoring controlled camera |
| CN201307322Y (en) * | 2008-12-10 | 2009-09-09 | 蚌埠依爱消防电子有限责任公司 | Electric fire detector based on firefighting warning linkage bus |
| CN201478830U (en) * | 2009-09-10 | 2010-05-19 | 浙江工业大学浙西分校 | Phase sequence indicating and alarming device of three-phase power supply |
| CN201716802U (en) * | 2010-05-28 | 2011-01-19 | 黄传易 | Anti-theft alarm device for power line transformer |
| CN202634852U (en) * | 2012-07-03 | 2012-12-26 | 成都市宏山科技有限公司 | Linear constant-current LED (light-emitting diode) driver |
| CN202652594U (en) * | 2012-07-03 | 2013-01-02 | 成都市宏山科技有限公司 | Light emitting diode driver possessing protection path |
| CN203242090U (en) * | 2013-05-30 | 2013-10-16 | 成都荣耀科技有限公司 | Alarm for preventing transformer in low-voltage power line from being stolen |
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Application publication date: 20130904 |