CN203260138U - Anti-theft alarm - Google Patents
Anti-theft alarm Download PDFInfo
- Publication number
- CN203260138U CN203260138U CN 201320294078 CN201320294078U CN203260138U CN 203260138 U CN203260138 U CN 203260138U CN 201320294078 CN201320294078 CN 201320294078 CN 201320294078 U CN201320294078 U CN 201320294078U CN 203260138 U CN203260138 U CN 203260138U
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- China
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- resistance
- connects
- dried reed
- alarm
- branch road
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- 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 is provided. The anti-theft alarm comprises a magnet, a reed switch, an alarm circuit, a buzzer and a light-emitting diode. The anti-theft alarm is characterized in that the magnet is connected on a door frame; the door frame is connected with the reed switch corresponding to the magnet; the reed switch is connected with the alarm circuit; and the alarm circuit is respectively connected with the buzzer and the light-emitting diode. The anti-theft alarm of the utility model has the advantages of simple circuit and convenient installation, and can emit alarm signals when a door or a window is opened, such that the owner of a house can be prompted that someone is coming into the house, and therefore, an anti-theft effect can be realized.
Description
Technical field
The utility model relates to a kind of alarm, relates in particular to the burglar alarm for family, dormitory and hotel.
Background technology
Thievery is day by day savage on the present society.Especially when the offender takes advantage of people and sleep soundly, enter the bedroom by the door and window that does not shut and commit theft.And this alarm is used for can playing good anti-theft alarm result on door, the window.
Summary of the invention
The purpose of this utility model is to provide a kind of burglar alarm, and this alarm is simple and practical, adopts the most basic circuit luminous alarm principle, can be applied in the door and window place, can prevent entering of thief, has played safe effect.
The utility model is to realize like this, it comprises magnet, dried reed, warning circuit, hummer, light emitting diode, it is characterized in that magnet is connected on the doorframe, is connected with dried reed on the door body of corresponding magnet, dried reed connects warning circuit, and warning circuit connects respectively hummer and light emitting diode.
Described warning circuit is that power supply connects dried reed, article one branch road connecting luminous diode D1 of dried reed S1, the resistance R 1 of 100 Ω and the collector of triode Q2, the second branch road of dried reed S1 connects the resistance R 2 of 4.7K and the base stage of triode Q1, the capacitor C 1 that connects 10 μ f between resistance R 1 and the R2, the 3rd branch road of dried reed S1 connects the resistance R 3 of 4.7K, resistance R 3 is connected to the base stage of triode Q2, the 4th branch road connecting luminous diode D2 of dried reed S1 and the resistance R 4 of 100 Ω, resistance R 4 is connected to the collector of triode Q1, the capacitor C 2 that connects 10 μ f between resistance R 3 and the resistance R 4, the 5th branch road of dried reed S1 connects hummer LS1.
Technique effect of the present utility model is: circuit is simple, and is easy for installation, can send chimes of doom when door and window is opened, and can in time remind the house owner to have the people to come in, thereby play antitheft effect.
Description of drawings
Fig. 1 is functional-block diagram of the present utility model.
Fig. 2 is circuit diagram of the present utility model.
In the drawings, 1, magnet 2, dried reed 3, warning circuit 4, hummer 5, light emitting diode.
Embodiment
As shown in Figure 1 and Figure 2, the utility model is to realize like this, it comprises magnet 1, dried reed 2, warning circuit 3, hummer 4, light emitting diode 5, magnet 1 is connected on the doorframe, be connected with dried reed 2 on the door body of corresponding magnet 1, dried reed 2 connects warning circuit 3, and warning circuit 3 connects respectively hummer 4 and light emitting diode 5.Described warning circuit 3 is dried reed for power supply connects, article one branch road connecting luminous diode D1 of dried reed S1, the resistance R 1 of 100 Ω and the collector of triode Q2, the second branch road of dried reed S1 connects the resistance R 2 of 4.7K and the base stage of triode Q1, the capacitor C 1 that connects 10 μ f between resistance R 1 and the R2, the 3rd branch road of dried reed S1 connects the resistance R 3 of 4.7K, resistance R 3 is connected to the base stage of triode Q2, the 4th branch road connecting luminous diode D2 of dried reed S1 and the resistance R 4 of 100 Ω, resistance R 4 is connected to the collector of triode Q1, the capacitor C 2 that connects 10 μ f between resistance R 3 and the resistance R 4, the 5th branch road of dried reed S1 connects hummer LS1.Because magnet u1 attractive force, dried reed is in off-state when dried reed at closing time.When door was opened, dried reed triggered the conducting of rear class acousto-optic circuit owing to there is not magnetic pull to cause closure, and hummer sounds, and the bistable signal circuit that U1 and U2 form is so that D1 and D2 light emitting diode are glittering.Reach acousto-optic with the effect of alarm.
Claims (2)
1. burglar alarm, it comprises magnet, dried reed, warning circuit, hummer, light emitting diode, it is characterized in that magnet is connected on the doorframe, is connected with dried reed on the door body of corresponding magnet, dried reed connects warning circuit, and warning circuit connects respectively hummer and light emitting diode.
2. burglar alarm according to claim 1, it is characterized in that described warning circuit is that power supply connects dried reed, article one branch road connecting luminous diode D1 of dried reed S1, the resistance R 1 of 100 Ω and the collector of triode Q2, the second branch road of dried reed S1 connects the resistance R 2 of 4.7K and the base stage of triode Q1, the capacitor C 1 that connects 10 μ f between resistance R 1 and the R2, the 3rd branch road of dried reed S1 connects the resistance R 3 of 4.7K, resistance R 3 is connected to the base stage of triode Q2, the 4th branch road connecting luminous diode D2 of dried reed S1 and the resistance R 4 of 100 Ω, resistance R 4 is connected to the collector of triode Q1, the capacitor C 2 that connects 10 μ f between resistance R 3 and the resistance R 4, the 5th branch road of dried reed S1 connects hummer LS1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320294078 CN203260138U (en) | 2013-05-27 | 2013-05-27 | Anti-theft alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320294078 CN203260138U (en) | 2013-05-27 | 2013-05-27 | Anti-theft alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203260138U true CN203260138U (en) | 2013-10-30 |
Family
ID=49472686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320294078 Expired - Fee Related CN203260138U (en) | 2013-05-27 | 2013-05-27 | Anti-theft alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203260138U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103745545A (en) * | 2014-01-14 | 2014-04-23 | 福建创高安防技术有限公司 | Door magnetic induction device and method |
-
2013
- 2013-05-27 CN CN 201320294078 patent/CN203260138U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103745545A (en) * | 2014-01-14 | 2014-04-23 | 福建创高安防技术有限公司 | Door magnetic induction device and method |
| CN103745545B (en) * | 2014-01-14 | 2017-02-01 | 福建创高安防技术股份有限公司 | Door magnetic induction device and method |
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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: 20131030 Termination date: 20140527 |