CN2611996Y - Antitheft warner - Google Patents
Antitheft warner Download PDFInfo
- Publication number
- CN2611996Y CN2611996Y CN 03225656 CN03225656U CN2611996Y CN 2611996 Y CN2611996 Y CN 2611996Y CN 03225656 CN03225656 CN 03225656 CN 03225656 U CN03225656 U CN 03225656U CN 2611996 Y CN2611996 Y CN 2611996Y
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- CN
- China
- Prior art keywords
- delay
- switch
- trigger circuit
- delay switch
- series
- 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
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Abstract
An anti-theft alarm which can automatically return after alarm, with simple structure comprises an alarm connected with an alternative-current power supply and controlled by a controllable silicon controlled switch circuit, characterized in further composed of a sensor for emitting a switch signal and a delay switch trigger circuit connected with a direct-current power supply, while the output of switch-type sensor is connected with a control input which can start the delay switch trigger circuit, and the delay switch trigger circuit is serially connected with a switch tube (G2) inside which delay connect time is controlled by a base electrode charge capacitor (C2), and the output of the delay switch trigger circuit is connected with a trigger control electrode of a controllable silicon (W) in the controllable silicon controlled switch circuit.
Description
Technical field
The utility model belongs to a kind of burglar alarm.
Background technology
Promptly be in the sounding alarm state as unmanned for closing after existing burglar alarm majority is triggered always, disturb other people.The complex structure that has, the cost height, the easy generation false triggering that has,
Summary of the invention
The technical problems to be solved in the utility model provides and a kind ofly can automatically reset after sending chimes of doom, and burglar alarm simple in structure.
The technical scheme that addresses the above problem is:: the utility model is provided with the alarm that connects AC power and controlled its switch by the controllable silicon controlled switch circuit, it is characterized in that: also be provided with sensor that can send switching signal and the delay switch trigger circuit that link to each other with direct supply, switching regulator sensor output terminal links to each other with the control input end that can start the work of delay switch trigger circuit, be in series with in the delay switch trigger circuit by base-charging capacitance (C2) and control its time-delay switching tube (G2) of service time, the triggering control utmost point of the controllable silicon (W) in the delay switch trigger circuit output termination transwitch circuit.
Principle of work of the present utility model is: when sensor sends the switch transducing signal, start the work of delay switch trigger circuit, trigger thyristor (W) conducting, alarm sends alerting signal, when the delay switch trigger circuit under the effect of delay switch pipe (G2) during time delayed turn-off, alarm automatically resets.
The utility model is simple in structure, and cost is low, and sensor sends to steal and can trigger the transwitch circuit behind the feelings switch transducing signal and make alarm send alerting signal, and can turn-off alarm by automatic time delay, with prevent to report to the police for a long time interference other people.
Description of drawings
Fig. 1, the utility model frame principle figure
Fig. 2, the utility model embodiment circuit diagram
Embodiment
This routine DC power supply circuit is: it is elementary that 220 volts of AC power meet transformer T, and 12 volts of low-voltage ACs of transformer secondary output connect full bridge rectifier, the full bridge rectifier output DC, and the full bridge rectifier output terminal is connected to filter capacitor C1.
Be in series with delay switch triode G2 opposite polarity in the switch triode G1 emitter-base bandgap grading loop of delay switch trigger circuit with it, the base stage of delay switch triode G2 is leaded up to time-delay charging capacitor C2 and is met its collector dc power supply terminal A, one the tunnel is connected with its emitter dc power supply terminal O by resistance R 3, R2, R1 successively, R3 links to each other with the end that is connected in series of G2 with G1 with the link of R2, R2 links to each other sensor with the link of R1 with the base stage of G1.S is easily broken thin wire, be connected between the collector dc power supply terminal A of switch triode G1 base stage and delay switch triode G2, switch triode G1 also is in series with photoelectrical coupler GT in the loop, photoelectrical coupler coupling level is connected in the trigger circuit of bidirectional triode thyristor pipe W, and bidirectional triode thyristor pipe W and alarm MS are connected in series and connect the AC power two ends.
With easily broken thin wire S around door and window or other position that need guard against, S is with R2 under the normal condition, R3, the C2 short circuit, G1, G2 ends, open when S broken when take place stealing the feelings door and window, time-delay charging capacitor C2 passes through R3, R2, the R1 charging is for G2 provides bias current, the G2 conducting, G1 is conducting also, and photoelectrical coupler work triggers bidirectional triode thyristor pipe W conducting, alarm rings, C2 charges electricity, and G2 ends, and also ends with the G1 of its polyphone, photoelectrical coupler quits work, alarm automatically resets, and adjusts charging capacitor C2 or R3, R2, the value of R1 can be adjusted the delayed alarm time.
Present embodiment is simple in structure, and cost is low, and reliable operation, is difficult for false triggering takes place, and can automatically reset after the alarm equipment alarm, does not disturb other people, and is practical.
Sensor S of the present utility model also can adopt the microswitch of one or several series connection, be contained on each door and window, when closing, door and window do not send out chimes of doom, if can send the delayed alarm signal when having door and window to open, both can be used for antitheft, also can be used for reminding owner to shut door and window, do not need to close the alarm power supply when antitheft and get final product.
Claims (4)
1, a kind of burglar alarm, be provided with the alarm that connects AC power and control its switch by the controllable silicon controlled switch circuit, it is characterized in that: also be provided with sensor that can send switching signal and the delay switch trigger circuit that link to each other with direct supply, switching regulator sensor output terminal links to each other with the control input end that can start the work of delay switch trigger circuit, be in series with in the delay switch trigger circuit by base-charging capacitance (C2) and control its time-delay switching tube (G2) of service time, the triggering control utmost point of the controllable silicon (W) in the delay switch trigger circuit output termination transwitch circuit.
2, burglar alarm according to claim 1, it is characterized in that: the switch triode of described delay switch trigger circuit (G1) emitter-base bandgap grading is in series with delay switch triode opposite polarity with it (G2) in the loop, the base stage of delay switch triode (G2) lead up to the time-delay charging capacitor (C2) connect its collector dc power supply terminal (A), one the tunnel successively by resistance (R3), (R2), (R1) be connected with its emitter dc power supply terminal (O), (R3) link to each other with the end that is connected in series of (G2) with (G1) with the link of (R2), (R2) link to each other with the base stage of (G1) with the link of (R1), switching regulator sensor (S) is connected between the collector dc power supply terminal (A) of switch triode (G1) base stage and delay switch triode (G2), switch triode (G1) also is in series with photoelectrical coupler (GT) in the loop, photoelectrical coupler coupling level is connected in the trigger circuit of bidirectional triode thyristor pipe (W), and bidirectional triode thyristor pipe (W) is connected in series with alarm (MS) and connects the AC power two ends.
3, burglar alarm according to claim 1 and 2 is characterized in that: described switching regulator sensor (S) is easily broken thin wire.
4, burglar alarm according to claim 1 and 2 is characterized in that: described switching regulator sensor (S) is a microswitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03225656 CN2611996Y (en) | 2003-04-24 | 2003-04-24 | Antitheft warner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03225656 CN2611996Y (en) | 2003-04-24 | 2003-04-24 | Antitheft warner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2611996Y true CN2611996Y (en) | 2004-04-14 |
Family
ID=34163710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03225656 Expired - Fee Related CN2611996Y (en) | 2003-04-24 | 2003-04-24 | Antitheft warner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2611996Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877851A (en) * | 2017-04-14 | 2017-06-20 | 深圳怡化电脑股份有限公司 | A kind of sensor delay control circuit |
-
2003
- 2003-04-24 CN CN 03225656 patent/CN2611996Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877851A (en) * | 2017-04-14 | 2017-06-20 | 深圳怡化电脑股份有限公司 | A kind of sensor delay control circuit |
| CN106877851B (en) * | 2017-04-14 | 2023-10-20 | 深圳怡化电脑股份有限公司 | Sensor delay control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |