CN108109307A - A kind of triode drive-type anti-theft alarm system - Google Patents
A kind of triode drive-type anti-theft alarm system Download PDFInfo
- Publication number
- CN108109307A CN108109307A CN201711316303.4A CN201711316303A CN108109307A CN 108109307 A CN108109307 A CN 108109307A CN 201711316303 A CN201711316303 A CN 201711316303A CN 108109307 A CN108109307 A CN 108109307A
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- Prior art keywords
- triode
- resistance
- collector
- emitter
- circuit
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
Abstract
The present invention provides a kind of triode drive-type anti-theft alarm system, by electrode A, touch switch circuit, polar capacitor C1, resistance R2, transistor drive circuit, current rectifying and wave filtering circuit, transformer T and power switch K compositions；The Same Name of Ends of the transformer T secondary forms power input after power switch K together with its non-same polarity, and primary side is then connected with current rectifying and wave filtering circuit；The transistor drive circuit is then connected with current rectifying and wave filtering circuit；Touch switch circuit is then connected with transistor drive circuit；Polar capacitor C1 and resistance R2 are in parallel, one common end is connected with touch switch circuit, another common end is then connected with transistor drive circuit；The electrode A is then connected with touch switch circuit；The present invention can send alarm automatically after thief touches electrode, its property safety of people is reminded to be on the hazard, enables people to timely make a response, avoids its property loss.
Description
Technical field
The present invention relates to a kind of alarm system, in particular to a kind of triode drive-type anti-theft alarm systems.
Background technology
With the fast development of social progress and science and technology, people’s lives level is also constantly improving.Work as people
Out on tours or work when, property equipment of people etc. safely become its concern matter of utmost importance.For this problem, develop
A series of burglar alarm is gone out.Most common in early time is exactly to install protection network, but this traditional-family is antitheft
Warning device is more clumsy, once it is difficult escaping from window to have fire that people occur, while the net structure of the facility compares and is beneficial to
Climbing, hidden danger is brought to the household safe of unused protection network.Therefore, how preferably to protect the property safety of people is then mesh
Preceding institute's urgent problem.
The content of the invention
The defects of it is an object of the invention to overcome current anti-theft device that can not realize anti-theft feature well, provide one
Kind triode drive-type anti-theft alarm system.
The purpose of the present invention is achieved through the following technical solutions：A kind of triode drive-type anti-theft alarm system, by electrode
A, touch switch circuit, polar capacitor C1, resistance R2, transistor drive circuit, current rectifying and wave filtering circuit, transformer T and power supply
Switch K compositions.
Further, the Same Name of Ends of the transformer T secondary forms power supply after power switch K with together with its non-same polarity
Input terminal, primary side are then connected with current rectifying and wave filtering circuit；The transistor drive circuit is then connected with current rectifying and wave filtering circuit；
Touch switch circuit is then connected with transistor drive circuit；Polar capacitor C1 and resistance R2 are in parallel, one common end with
Touch switch circuit is connected, another common end is then connected with transistor drive circuit；The electrode A is then opened with contact
Powered-down road is connected.
The transistor drive circuit is serially connected in three by triode VT4, triode VT5, triode VT6, triode VT7
Resistance R4 between the emitter of pole pipe VT4 and the base stage of triode VT5, one end are connected, separately with the collector of triode VT4
The resistance R5 that one end is then connected with the base stage of triode VT6 is serially connected in the collector of triode VT6 and the hair of triode VT7
Resistance R6 between emitter-base bandgap grading, the resistance R7 being serially connected between the collector of triode VT6 and the base stage of triode VT7, one end with
The resistance R8 being grounded while the collector of triode VT7 is connected, the other end is then connected with the emitter of triode VT6,
And it is serially connected in the alarm B compositions between the collector of triode VT5 and the emitter of triode VT7；The triode VT4
Base stage be connected with touch switch circuit, ground connection, its hair while its collector is then connected with the emitter of triode VT5
Emitter-base bandgap grading is then connected with touch switch circuit and current rectifying and wave filtering circuit simultaneously；The base stage and polar capacitor of the triode VT6
The cathode of C1 is connected, and the collector of the triode VT7 is then connected with current rectifying and wave filtering circuit.
The touch switch circuit includes triode VT1, triode VT2, triode VT3, resistance R1 and resistance R3；
The base stage of the triode VT1 is connected with electrode A, and base stage of the emitter then with triode VT2 is connected, and collector is then
It is connected with the emitter of triode VT4；The collector of the triode VT2 is connected with the collector of triode VT1, hair
Base stage of the emitter-base bandgap grading then with triode VT3 is connected；One end of the resistance R1 is connected with the collector of triode VT3, another
Emitter of the one end then with triode VT3 after resistance R3 is connected；The emitter of the triode VT3 is with polar capacitor C1's
Anode is connected, and collector of the collector then with triode VT1 is connected；The tie point of the resistance R1 and resistance R3 then with
The base stage of triode VT4 is connected.
The current rectifying and wave filtering circuit then includes diode D1, diode D2 and polar capacitor C4；The P of the diode D1
Pole is connected with the emitter of triode VT4, Same Name of Ends of its N pole then with transformer T primary sides after diode D2 is connected；Institute
State that the anode of polar capacitor C4 is connected with the N poles of diode D1, collector of its cathode then with triode VT7 is connected；Institute
The non-cathode of the same name with polar capacitor C4 for stating transformer T primary sides is connected.
The present invention compared with the prior art, has the following advantages and advantageous effect：
(1) present invention can send alarm automatically after thief touches electrode, its property safety of people is reminded to be subject to prestige
The side of body, enables people to timely make a response, avoids its property loss.
(2) present invention has the characteristics that low-power consumption, high stability, easy to install.
Description of the drawings
Fig. 1 is the overall structure figure of the present invention.
Specific embodiment
The present invention is described in further detail with reference to embodiment, but embodiments of the present invention are not limited to
This.
Embodiment
As shown in Figure 1, the triode drive-type anti-theft alarm system of the present invention, by electrode A, touch switch circuit, polarity
Capacitance C1, resistance R2, transistor drive circuit, current rectifying and wave filtering circuit, transformer T and power switch K compositions.
During connection, the anode of polar capacitor C1 is connected with touch switch circuit, its cathode then with transistor drive circuit
It is connected；And resistance R2 is then in parallel with polar capacitor C1.The Same Name of Ends of the transformer T secondary after power switch K with its
Non-same polarity forms power input together, input termination 220V alternating currents, the primary side of transformer T then with current rectifying and wave filtering circuit phase
Connection.220V alternating currents obtain the operating voltage of 20V after transformer T transformations, are used to provide work electricity to entire alarm system
Pressure.
In addition, the transistor drive circuit is then connected with current rectifying and wave filtering circuit；Touch switch circuit then with triode
Driving circuit is connected；The electrode A is then connected with touch switch circuit.The electrode A is mounted on what thief easily touched
Place, on window or need thing to be protected.
The touch switch circuit includes triode VT1, triode VT2, triode VT3, resistance R1 and resistance R3.
During connection, the base stage of the triode VT1 is connected with electrode A, and base stage of the emitter then with triode VT2 is connected,
Collector is then connected with transistor drive circuit；The collector of the triode VT2 is connected with the collector of triode VT1
It connects, base stage of the emitter then with triode VT3 is connected.One end of the resistance R1 is connected with the collector of triode VT3
It connects, emitter of the other end then with triode VT3 after resistance R3 is connected.The emitter and polarity of the triode VT3
The anode of capacitance C1 is connected, and collector of the collector then with triode VT1 is connected；The company of the resistance R1 and resistance R3
Contact is then connected with transistor drive circuit.
The transistor drive circuit is by triode VT4, triode VT5, triode VT6, triode VT7, resistance R4, electricity
Hinder R5, resistance R6, resistance R7, resistance R8 and alarm B composition.Resistance R4 is serially connected in emitter and three poles of triode VT4
Between the base stage of pipe VT5, one end of resistance R5 is connected with the collector of triode VT4, its other end is then with triode VT6's
Base stage is connected, and resistance R6 is then serially connected between the collector of triode VT6 and the emitter of triode VT7, resistance R7 concatenations
Between the collector of triode VT6 and the base stage of triode VT7, one end of resistance R8 is connected with the collector of triode VT7
It connects, be grounded while its other end is then connected with the emitter of triode VT6, alarm B is then serially connected in the collection of triode VT5
Between the emitter of electrode and triode VT7.
Meanwhile the base stage of the triode VT4 is connected with the tie point of resistance R1 and resistance R2, its collector is then with three
Ground connection, collector of its emitter then with triode VT1 are connected while the emitter of pole pipe VT5 is connected.Three pole
The base stage of pipe VT6 is connected with the cathode of polar capacitor C1, and the collector of the triode VT7 is then connected with current rectifying and wave filtering circuit
It connects.
The current rectifying and wave filtering circuit is used to carry out rectifying and wave-filtering processing to the operating voltage after transformation, including diode
D1, diode D2 and polar capacitor C4.The P poles of the diode D1 are connected with the emitter of triode VT4, its N pole then
Same Name of Ends with transformer T primary sides after diode D2 is connected；The N poles phase of the anode of the polar capacitor C4 and diode D1
Connection, collector of its cathode then with triode VT7 are connected；The transformer T primary sides it is non-of the same name with polar capacitor C4
Cathode is connected.
When pressing power switch K since triode VT1 base stages are hanging, which is in cut-off state, this
When triode VT4, triode VT5, triode VT6 and triode VT7 cut-offs, the transistor drive circuit do not work, alarm
Device B does not alarm.When someone touches electrode A, due to human body sensing faint alternating current through triode VT1, triode VT2 with
And make triode VT4, triode VT5, triode VT6 and triode VT7 conductings, at this moment triode after triode VT3 amplifications
Driving circuit is driven alarm B, and alarm B sends alarm.Meanwhile polar capacitor C1 charges rapidly, therefore, that is, makes one
Body stops touching electrode A, and polar capacitor C1 can also be carried to triode VT4, triode VT5, triode VT6 and triode VT7
It for electric current, so alarm B still alarms, can just stop about after 5S, so then can provide alarm to people.
As described above, the present invention can be implemented well.
Claims (3)
1. a kind of triode drive-type anti-theft alarm system, it is characterised in that：By electrode A, touch switch circuit, polar capacitor
C1, resistance R2, transistor drive circuit, current rectifying and wave filtering circuit, transformer T and power switch K compositions；The transformer T pairs
The Same Name of Ends on side forms power input after power switch K together with its non-same polarity, primary side then with current rectifying and wave filtering circuit
It is connected；The transistor drive circuit is then connected with current rectifying and wave filtering circuit；Touch switch circuit then drives electricity with triode
Road is connected；Polar capacitor C1 and resistance R2 are in parallel, one common end is connected with touch switch circuit, another is common
Then it is connected with end with transistor drive circuit；The electrode A is then connected with touch switch circuit；The triode driving electricity
Triode VT4, triode VT5, triode VT6, triode VT7 are route, is serially connected in the emitter and triode of triode VT4
Resistance R4 between the base stage of VT5, one end is connected with the collector of triode VT4, the other end then base stage with triode VT6
The resistance R5 being connected, the resistance R6 being serially connected between the collector of triode VT6 and the emitter of triode VT7, is serially connected in
Resistance R7 between the collector of triode VT6 and the base stage of triode VT7, one end is connected with the collector of triode VT7,
Resistance R8 that the other end is grounded while being then connected with the emitter of triode VT6 and the current collection for being serially connected in triode VT5
Alarm B compositions between the emitter of pole and triode VT7；The base stage of the triode VT4 is connected with touch switch circuit
Connect, while its collector is then connected with the emitter of triode VT5 ground connection, its emitter then simultaneously with touch switch circuit
And current rectifying and wave filtering circuit is connected；
The base stage of the triode VT6 is connected with the cathode of polar capacitor C1, the collector of the triode VT7 then with rectification
Filter circuit is connected.
2. a kind of triode drive-type anti-theft alarm system according to claim 1, it is characterised in that：The contact is opened
Powered-down road includes triode VT1, triode VT2, triode VT3, resistance R1 and resistance R3；The base stage of the triode VT1
It is connected with electrode A, base stage of the emitter then with triode VT2 is connected, the collector then emitter with triode VT4
It is connected；The collector of the triode VT2 is connected with the collector of triode VT1, and emitter is then with triode VT3's
Base stage is connected；One end of the resistance R1 is connected with the collector of triode VT3, and the other end is then after resistance R3 with three
The emitter of pole pipe VT3 is connected；The emitter of the triode VT3 is connected with the anode of polar capacitor C1, collector
Then the collector with triode VT1 is connected；Base stage of the tie point of the resistance R1 and resistance R3 then with triode VT4 is connected
It connects.
3. a kind of triode drive-type anti-theft alarm system according to claim 2, it is characterised in that：The rectifying and wave-filtering
Circuit then includes diode D1, diode D2 and polar capacitor C4；The P poles of the diode D1 and the transmitting of triode VT4
Pole is connected, Same Name of Ends of its N pole then with transformer T primary sides after diode D2 is connected；The anode of the polar capacitor C4
It is connected with the N poles of diode D1, collector of its cathode then with triode VT7 is connected；The transformer T primary sides it is non-same
Name is connected with the cathode of polar capacitor C4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711316303.4A CN108109307A (en) | 2017-12-12 | 2017-12-12 | A kind of triode drive-type anti-theft alarm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711316303.4A CN108109307A (en) | 2017-12-12 | 2017-12-12 | A kind of triode drive-type anti-theft alarm system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108109307A true CN108109307A (en) | 2018-06-01 |
Family
ID=62215561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711316303.4A Pending CN108109307A (en) | 2017-12-12 | 2017-12-12 | A kind of triode drive-type anti-theft alarm system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108109307A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115691015A (en) * | 2022-10-24 | 2023-02-03 | 佛山市新东方电子技术工程有限公司 | Capacitive anti-theft detection circuit and anti-theft and anti-robbery device |
-
2017
- 2017-12-12 CN CN201711316303.4A patent/CN108109307A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115691015A (en) * | 2022-10-24 | 2023-02-03 | 佛山市新东方电子技术工程有限公司 | Capacitive anti-theft detection circuit and anti-theft and anti-robbery device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180601 |
|
| WD01 | Invention patent application deemed withdrawn after publication |