CN101764315A - Anti-theft power socket of charger - Google Patents
Anti-theft power socket of charger Download PDFInfo
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- CN101764315A CN101764315A CN200810202664A CN200810202664A CN101764315A CN 101764315 A CN101764315 A CN 101764315A CN 200810202664 A CN200810202664 A CN 200810202664A CN 200810202664 A CN200810202664 A CN 200810202664A CN 101764315 A CN101764315 A CN 101764315A
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Abstract
The invention relates to an anti-theft power socket of a charger, comprising a current detection circuit and an alarm circuit, wherein the current detection circuit comprises two diodes, a PNP-type triode and an NPN triode; the two diodes are connected in series on a power line; when current flows past, the diodes have voltage drop, which enables the two triodes to be conducted and the collector of the NPN triode to be at a low level, and therefore, voltage is not supplied for the alarm circuit; when no current flows past, i.e. the charger is stolen and pulled out of a power socket, the diodes have no voltage drop, which enables the two triodes to be cut off and the collectors of the NPN triode to be at a high level, thereby enabling the alarm circuit to give an alarm.
Description
Affiliated technical field
The present invention relates to a kind of anti-theft power socket, specifically relate to a kind of anti-theft power socket of charger.
Background technology
Charger is the essential electric equipment of electric bicycle, and charging modes is a kind of at present is to unload storage battery to move indoor filling to, another kind eaily mode be supply socket is moved to outdoor, plugging charger directly charges to electric motor car, yet this outdoor charging modes often has the stolen incident of charger to take place, and can not realize in time and charger is indoor when stolen.
Summary of the invention
The purpose of this invention is to provide a kind of anti-theft power socket of charger, is charger when extracting supply socket when charger is stolen, thereby supply socket is sent chimes of doom at once and made and indoorly can in time realize.
For reaching above-mentioned purpose, the present invention solves the technical scheme that its technical problem takes: contain a current detection circuit in a kind of anti-theft power socket of charger, a warning circuit, contain a diode in the described current detection circuit, described this diode is serially connected on the power line, its positive pole is connected with inserted sheet in the supply socket, its negative pole is connected with the 220V AC power by plug, this diode provides a loop for the negative half period of alternating current, also contain i.e. second diode of another diode in the described testing circuit, in parallel with above-described diode, its positive pole is connected with the negative pole of above-described diode, its negative pole is connected with the positive pole of above-described diode, and this second diode provides a loop for the positive half cycle of alternating current, and this second diode is when having electric current to flow through when the positive half cycle of alternating current, the have an appointment pressure drop of 0.7V of two ends of its diode, and this second diode is when no current flows through when the positive half cycle of alternating current, two ends of its diode do not have pressure drop, thereby have or not pressure drop just can differentiate according to two ends of this second diode to have no current to flow through, also contain a positive-negative-positive triode in the described current detection circuit, its emitter is connected with the positive pole of this second diode, its base stage is connected with the negative pole of this second diode, also contain another NPN type triode in the described current detection circuit, its collector electrode is connected with the positive pole of second diode through a resistance, its emitter is connected with another root power line, its base stage is connected with the collector electrode of above-mentioned positive-negative-positive triode, described current detection circuit working method is: when having electric current to flow through on the power line to be charger to insert supply socket, second diode two end has the 0.7V pressure drop, thereby can cause the conducting of positive-negative-positive triode, the conducting of positive-negative-positive triode also causes the conducting of NPN type triode, so voltage is low level on the collector electrode of NPN type triode, thereby do not provide voltage to warning circuit, when no current on the power line flows through is that charger is stolen and when extracting supply socket, second diode two end do not have pressure drop, the positive-negative-positive triode ends, the positive-negative-positive triode is by causing that NPN type triode ends, so voltage is high level on the collector electrode of NPN type triode, thereby provide voltage to warning circuit, contain a diode that is used for halfwave rectifier in the described warning circuit, the collector electrode of the NPN triode that it is anodal and above-mentioned is connected, its negative pole is connected with the positive pole of a filter capacitor and an end of an active buzzer respectively, and the other end of the negative pole of filter capacitor and active buzzer is connected with another root power line simultaneously, when the collector electrode of above-mentioned NPN type triode is low level is that charger is not reported to the police when inserting charging socket, and to be high level be that charger is stolen reports to the police when extracting socket when the collector electrode of above-mentioned NPN type triode.
The invention has the beneficial effects as follows: can report to the police immediately when charger is extracted socket, thereby reach the timely purpose that can realize that charger is stolen.
Description of drawings
Accompanying drawing is the circuit diagram of anti-theft power socket of charger
Embodiment
To tell specific embodiments of the present invention particularly with reference to accompanying drawing: contain a current detection circuit 2 in a kind of anti-theft power socket of charger, a warning circuit 3, contain a diode 4 in the current detection circuit 2, diode 4 is serially connected on the power line, its positive pole is connected with inserted sheet 12, its negative pole is connected with the 220V AC power by plug 1, diode 4 provides a loop for the negative half period of alternating current, 2 also contain another diode 5 in the testing circuit, and it is in parallel with diode 4, its positive pole is connected with the negative pole of diode 4, its negative pole is connected with the positive pole of diode 4, diode 5 provides a loop for the positive half cycle of alternating current, and diode 5 is when the positive half cycle of alternating current has electric current to flow through, the have an appointment pressure drop of 0.7V of two ends of its diode 5, and diode 5 is when the positive half cycle no current of alternating current flows through, two ends of its diode 5 do not have pressure drop, also contain a positive-negative-positive triode 6 in the current detection circuit 2, a NPN type triode 7, the emitter of triode 6 is connected with the positive pole of diode 5, its base stage is connected with the negative pole of diode 5, the collector electrode of triode 7 is connected through the positive pole of resistance 8 with diode 5, its emitter is connected with another root power line, its base stage is connected with the collector electrode of triode 6, the working method of current detection circuit 2 is: when having electric current to flow through on the power line to be charger to insert supply socket, two ends of diode 5 form the 0.7V pressure drop and make triode 6 conductings, triode 6 conductings also make triode 7 conductings, so voltage is low level on the collector electrode of triode 7, thereby do not provide voltage to warning circuit 3, when no current on the power line flows through is that charger is stolen and when extracting supply socket, two ends of diode 5 do not have pressure drop, triode 6 ends, triode 6 is by also triode 7 being ended, so voltage is high level on the collector electrode of triode 7, thereby provide voltage to warning circuit 3, contain a diode 9 that is used for halfwave rectifier in 3 in the warning circuit, its positive pole is connected with the collector electrode of triode 7, its negative pole is connected with the positive pole of filter capacitor 10 and an end of active buzzer 11 respectively, and the other end of the negative pole of filter capacitor 10 and active buzzer 11 is connected with another root power line simultaneously, and another root power line is connected with another inserted sheet 13 in the socket, when the collector electrode of triode 7 is low level is that charger is not reported to the police when inserting charging socket, to be high level be that charger is stolen when extracting socket when triode 7 collector electrodes, electric current is by resistance 8, diode 9 flows through active buzzer 11, and active buzzer 11 promptly sends chimes of doom.
Claims (3)
1. contain a current detection circuit 2 in an anti-theft power socket of charger, a warning circuit 3, it is characterized in that: contain a diode 4 in the current detection circuit 2, diode 4 is serially connected on the power line, its positive pole is connected with inserted sheet 12, its negative pole is connected with the 220V AC power by plug 1,2 also contain another diode 5 in the testing circuit, and it is in parallel with diode 4, its positive pole is connected with the negative pole of diode 4, and its negative pole is connected with the positive pole of diode 4, also contains a positive-negative-positive triode 6 in the current detection circuit 2, a NPN type triode 7, the emitter of triode 6 is connected with the positive pole of diode 5, and its base stage is connected with the negative pole of diode 5, and the collector electrode of triode 7 is connected through the positive pole of resistance 8 with diode 5, its emitter is connected with another root power line, and its base stage is connected with the collector electrode of triode 6.
2. provide a loop according to claims 1 described diode 4 for the negative half period of alternating current, diode 5 provides a loop for the positive half cycle of alternating current, and diode 5 is when the positive half cycle of alternating current has electric current to flow through, the have an appointment pressure drop of 0.7V of two ends of its diode 5, and diode 5 is when the positive half cycle no current of alternating current flows through, and two ends of its diode 5 do not have pressure drop.
According to two ends of claims 1 and 2 described diodes 5 when having electric current to flow through on the power line to be charger to insert supply socket, two ends of diode 5 form the 0.7V pressure drop and make triode 6 conductings, triode 6 conductings also make triode 7 conductings, thereby make on the collector electrode of triode 7 voltage be low level and do not provide voltage to warning circuit 3, when no current on the power line flows through is that charger is stolen and when extracting supply socket, two ends of diode 5 do not have pressure drop, triode 6 ends, triode 6 is by also ending triode 7, thereby voltage is high level and provides voltage to warning circuit 3 on the collector electrode of triode 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810202664A CN101764315A (en) | 2008-11-13 | 2008-11-13 | Anti-theft power socket of charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810202664A CN101764315A (en) | 2008-11-13 | 2008-11-13 | Anti-theft power socket of charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101764315A true CN101764315A (en) | 2010-06-30 |
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ID=42495351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810202664A Pending CN101764315A (en) | 2008-11-13 | 2008-11-13 | Anti-theft power socket of charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101764315A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078213A (en) * | 2011-10-25 | 2013-05-01 | 深圳东松电子有限公司 | Power utilization controller |
| CN107316423A (en) * | 2017-07-18 | 2017-11-03 | 防城港市港口区高创信息技术有限公司 | A kind of household appliance anti-theft system |
-
2008
- 2008-11-13 CN CN200810202664A patent/CN101764315A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078213A (en) * | 2011-10-25 | 2013-05-01 | 深圳东松电子有限公司 | Power utilization controller |
| CN107316423A (en) * | 2017-07-18 | 2017-11-03 | 防城港市港口区高创信息技术有限公司 | A kind of household appliance anti-theft system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100630 |