CN201927143U - Door and window magnetic control alarm - Google Patents
Door and window magnetic control alarm Download PDFInfo
- Publication number
- CN201927143U CN201927143U CN2010206777887U CN201020677788U CN201927143U CN 201927143 U CN201927143 U CN 201927143U CN 2010206777887 U CN2010206777887 U CN 2010206777887U CN 201020677788 U CN201020677788 U CN 201020677788U CN 201927143 U CN201927143 U CN 201927143U
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- power supply
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- door
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Abstract
The utility model relates to a door and window magnetic control alarm which comprises a permanent magnet, a Hall switch circuit, a comparison amplifier circuit, a control circuit and an alarm circuit; the output end of the hall switch circuit is connected with the input end of the comparison amplifier circuit; the output end of the comparison amplifier circuit is connected with the trigger electrode of a thyristor of the control circuit; and the anode of the thyristor is connected with the alarm circuit in series and is connected with the positive electrode of a power supply. The door and window magnetic control alarm has the advantages of having low cost and giving an alarm reliably.
Description
Technical field
The utility model relates to a kind of door and window magnetic control alarm.
Background technology
Existing door and window alarm generally adopts the infrared alarm principle, is a kind of Infrared intrusion detector.Infrared intrusion detector rate of false alarm height has influenced the warning effect.
The utility model content
The purpose of this utility model is to provide a kind of door and window magnetic control alarm.It includes permanent magnet, Hall switch circuit, comparison amplifying circuit, control circuit, warning circuit composition, the output terminal of Hall switch circuit links to each other with the input end that compares amplifying circuit, relatively the output terminal of amplifying circuit links to each other with the silicon controlled trigger electrode of control circuit, and silicon controlled anode series connection warning circuit links to each other with the positive pole of power supply.
Principle of the present utility model is: when door and window is closed, make permanent magnet corresponding with Hall element, the Hall integrated circuit output low level can not trigger controllable silicon, and alarm is not worked; When door and window was opened, Hall integrated circuit was away from permanent magnet, and the output high level signal triggers controllable silicon through relatively amplifying, and makes alarm work, even shut door and window, alarm is quit work, thereby realizes warning function.
The utility model is compared with prior art, has low, the reliable advantage of reporting to the police of cost.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Referring to Figure of description 1.In circuit shown in Figure 1, this door and window magnetic control alarm, it includes permanent magnet, Hall switch circuit, comparison amplifying circuit, control circuit, warning circuit composition, the output terminal of Hall switch circuit links to each other with the input end that compares amplifying circuit, relatively the output terminal of amplifying circuit links to each other with the silicon controlled trigger electrode of control circuit, and silicon controlled anode series connection warning circuit links to each other with the positive pole of power supply.
1 pin of Hall switch circuit U1 links to each other with the positive pole of power supply, 2 pin link to each other with the negative pole of power supply, its output terminal links to each other with positive input terminal 3 pin that compare the integrated transporting discharging U2 in the amplifying circuit, the negative input end of U2 links to each other with an end of resistance R 1, the other end of R1 links to each other with the positive pole of power supply, one end of resistance R 2 links to each other with the negative pole of power supply, and the other end of R2 links to each other with negative input end 2 pin of U2; The output terminal series connection voltage stabilizing diode Z1 of U2 links to each other with the trigger electrode of the controllable silicon T1 of control circuit, and the chimes of doom integrated circuit U3 in the anode series connection warning circuit of T1 links to each other with the positive pole of power supply, and the negative pole of T1 links to each other with the negative pole of power supply; The output terminal of chimes of doom integrated circuit U3 is connected with loudspeaker SP1.Capacitor C 1 is connected in parallel on the positive and negative polarities of power supply, and switch SW 1 links to each other with the positive pole of battery, and NS is a permanent magnet, be installed in movable window on corresponding with Hall integrated circuit.
Components and parts in the circuit shown in Figure 1 can adopt following parameter: resistance R 1=R2=10k, capacitor C 1=220uF/25V, voltage stabilizing diode Z1=4V, hall ic U1 selects CS3144 for use, U2 selects general-purpose operation amplifier uA741 for use, and U3 selects the integrated circuit 9561 of chimes of doom for use, and cell voltage is selected 9 volts for use, controllable silicon T1 selects 3A/50V for use, and loudspeaker is selected 8 Europe 3-5 watts for use.
Claims (2)
1. door and window magnetic control alarm, it includes permanent magnet, Hall switch circuit, comparison amplifying circuit, control circuit, warning circuit composition, the output terminal that it is characterized in that Hall switch circuit links to each other with the input end that compares amplifying circuit, relatively the output terminal of amplifying circuit links to each other with the silicon controlled trigger electrode of control circuit, and silicon controlled anode series connection warning circuit links to each other with the positive pole of power supply.
2. a kind of door and window magnetic control alarm according to claim 1,1 pin that it is characterized in that wherein said Hall switch circuit U1 is continuous with the positive pole of power supply, 2 pin link to each other with the negative pole of power supply, its output terminal links to each other with positive input terminal 3 pin that compare the integrated transporting discharging U2 in the amplifying circuit, the negative input end of U2 links to each other with an end of resistance R 1, the other end of R1 links to each other with the positive pole of power supply, and an end of resistance R 2 links to each other with the negative pole of power supply, and the other end of R2 links to each other with negative input end 2 pin of U2; The output terminal series connection voltage stabilizing diode Z1 of U2 links to each other with the trigger electrode of the controllable silicon T1 of control circuit, and the chimes of doom integrated circuit U3 in the anode series connection warning circuit of T1 links to each other with the positive pole of power supply, and the negative pole of T1 links to each other with the negative pole of power supply; The output terminal of chimes of doom integrated circuit U3 is connected with loudspeaker SP1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206777887U CN201927143U (en) | 2010-12-24 | 2010-12-24 | Door and window magnetic control alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206777887U CN201927143U (en) | 2010-12-24 | 2010-12-24 | Door and window magnetic control alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201927143U true CN201927143U (en) | 2011-08-10 |
Family
ID=44430981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206777887U Expired - Fee Related CN201927143U (en) | 2010-12-24 | 2010-12-24 | Door and window magnetic control alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201927143U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103136891A (en) * | 2011-11-28 | 2013-06-05 | 鸿富锦精密工业（深圳）有限公司 | Antitheft detecting circuit and packing box with antitheft detecting circuit |
| CN104077866A (en) * | 2014-06-13 | 2014-10-01 | 苏州固基电子科技有限公司 | Magnetic control anti-theft alarm for windows |
| CN107100478A (en) * | 2017-06-14 | 2017-08-29 | 金龙联合汽车工业（苏州）有限公司 | A kind of induction type car door courtesy lamps and anti-pinch device switch based on Hall element |
-
2010
- 2010-12-24 CN CN2010206777887U patent/CN201927143U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103136891A (en) * | 2011-11-28 | 2013-06-05 | 鸿富锦精密工业（深圳）有限公司 | Antitheft detecting circuit and packing box with antitheft detecting circuit |
| CN103136891B (en) * | 2011-11-28 | 2015-07-29 | 鸿富锦精密工业（深圳）有限公司 | Burglar detection circuit and apply the packing case of this burglar detection circuit |
| CN104077866A (en) * | 2014-06-13 | 2014-10-01 | 苏州固基电子科技有限公司 | Magnetic control anti-theft alarm for windows |
| CN107100478A (en) * | 2017-06-14 | 2017-08-29 | 金龙联合汽车工业（苏州）有限公司 | A kind of induction type car door courtesy lamps and anti-pinch device switch based on Hall element |
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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: 20110810 Termination date: 20111224 |