CN2354192Y - Civil anti-theft alarm - Google Patents
Civil anti-theft alarm Download PDFInfo
- Publication number
- CN2354192Y CN2354192Y CN 98214509 CN98214509U CN2354192Y CN 2354192 Y CN2354192 Y CN 2354192Y CN 98214509 CN98214509 CN 98214509 CN 98214509 U CN98214509 U CN 98214509U CN 2354192 Y CN2354192 Y CN 2354192Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- mainframe
- transducer
- alarm
- power supply
- 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
Links
Images
Landscapes
- Burglar Alarm Systems (AREA)
Abstract
The utility model belongs to an electronic device mainly used for civil anti-theft warning. A switching power supply circuit, an acoustics circuit, a switch and a direct current power supply are arranged in a mainframe, and a resistance transducer having upper and lower threshold is separately connected with the mainframe. The resistance transducer is connected in series with a dry-reel pipe switch, and a magnet is arranged in the effective distance between an inductive transducer and a dry-reel pipe. When the alarm is used, the mainframe is arranged indoors, and the transducer is connected with the device needing anti-theft. If a thief disconnects a circuit or connects the circuit in short circuit, or makes the connection connect with the transducer, the mainframe indoors can send out alarm sound immediately. The mainframe has the self-hold function, and can not stop sending out sound if the power supply is not broken. With convenient installation, reliable performance and low price, the alarm is a civil anti-theft alarm with strong adaptability.
Description
The utility model belongs to a kind of electronic installation, is mainly used in civilian burglar alarm.
Burglar alarm in the market is numerous in variety, is broadly divided into low-medium-high level.Expensive goods advanced technology, good reliability, but complexity is installed, the price height is mainly used in more important antitheft occasion.Middle-grade product technology is more perfect, better performances, it is also convenient to install, price is in hundreds of units, the used sensor of this series products mostly is induction type, touch and infrared type, to the people of the behavior of meaning no harm, in case near or touch antitheft object, false alarm easily takes place.The low grade products states of opening or closing that adopt are reported to the police more, and its principle is simple, and price is low, and is easy for installation, but easily grasped by stealer, and decodes, and its poor reliability does not reach real antitheft purpose.
The purpose of this utility model is the burglar alarm of a kind of difficult discovery of design and decoding, and the service-strong sensor design makes its reliability height, has the warning auto-lock function, and price is low, and is easy for installation.
Above-mentioned purpose is achieved in that its design has main frame, is provided with switching power circuit, acoustics circuit, switch and direct supply etc. in the machine.Mainly be that input end at switching power circuit is connected to an electric resistance sensor, this electric resistance sensor is set with upper and lower threshold values, and separates with main frame and to be connected.Above-mentioned electric resistance sensor and switch also can be made into the magnetic switch sensor, are about to dry-reed tube switch and electric resistance sensor serial connection, and magnet piece places in its coverage.
Use such burglar alarm, at first main frame is placed in the duty room, electric resistance sensor is connected on needs thief-proof device place, disconnect or the short circuit wiring if any the burglar, or in wiring and on during this electric resistance sensor, be higher than on the electric resistance sensor threshold values or be lower than threshold values down, the indoor chimes of doom that sends at once only just stops to ring to person on duty's deenergization, if use magnetic switch, as long as the magnet of putting separates with the article of tongue tube respectively, promptly send chimes of doom.It is easy for installation, dependable performance, and price is low, is the stronger civilian burglar alarm of applicability.
Accompanying drawing and embodiment:
Accompanying drawing 1 is a structural representation.
Accompanying drawing 2 is embodiment 1 circuit theory diagrams.
Accompanying drawing 3 is embodiment 2 circuit theory diagrams.
Embodiment 1: the integrated circuit (IC) in the accompanying drawing 2 in the circuit
1Be switching power circuit, use 555 integrated packages.Integrated circuit (IC)
2Be acoustics circuit, use the KD956I integrated package, its output terminal is connected to loudspeaker Y, is connected to direct supply E in the entire circuit, and K switch and other peripheral resistor-capacitor unit are at IC
1Input end has electric resistance sensor R
1, resistance R
2And R
3, be IC
22,6 pin voltage is provided.Find out in the accompanying drawing 1 that this machine removes R
1Outward, other parts are assemblied in the little shell entirely becomes main frame, R
1And link with two longer lines between main frame.The R that the utility model is used
1If threshold values up and down at 10K-12K, power supply E is with 4 batteries 6V.Under the normal condition, IC
13 pin be noble potential, near power supply E voltage, IC
2Do not work and do not report to the police.During use with R
1Hidden certain position of being fixed in protected device (as agri-vehicle etc.) is used than thin wire to be connected with main frame then, and main frame is placed on duty room or dwelling, commit theft as the robber and break or the short circuit line, or in the wiring and on this electric resistance sensor, run off R
1The scope of threshold values up and down the time, IC
13 pin overturn immediately and be electronegative potential, make IC
2Work, loudspeaker Y sends chimes of doom.At this moment IC
17 pin be conducting state, pin 3 pin and be electronegative potential, just can stop to report to the police after having only K switch on the main frame to disconnect.After reclosing power supply, because capacitor C
1Effect, guarantee IC
14 pin voltages prior to 2,6,8 pin institute making alives, false alarm takes place when effectively preventing to start shooting.
Embodiment 2: utilize the magnetic switch principle of dry-reed tube switch, make the magnetic switch sensor, with dry-reed tube switch H and R
1The series connection sealing is connected with main frame in moulding box, and another is moulded in the box with magnet piece Z sealing again, can be installed on respectively such as on protected doorframe and the door leaf.If the burglar pries open door, dry-reed tube switch H inner contact turns to disconnection by closure, and alarm is reported to the police immediately, because this alarm has auto-lock function, even the burglar shuts the room again, reporting to the police can not stop yet.This example is mainly used in the antitheft of warehouse, room.
Claims (2)
1, a kind ofly is used for civilian burglar alarm, forms, it is characterized in that: the shape power supply IC circuit by being provided with switching power circuit, acoustics circuit, switch and direct supply in the main frame
1Input end be connected to an electric resistance sensor R
1, it is set with up and down threshold values, and separates with main frame and to be connected.
2, burglar alarm according to claim 1 is characterized in that: electric resistance sensor R
1H is connected in series with dry-reed tube switch, and magnet piece Z places R
1In the H coverage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98214509 CN2354192Y (en) | 1998-05-22 | 1998-05-22 | Civil anti-theft alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98214509 CN2354192Y (en) | 1998-05-22 | 1998-05-22 | Civil anti-theft alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2354192Y true CN2354192Y (en) | 1999-12-15 |
Family
ID=33968120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98214509 Expired - Fee Related CN2354192Y (en) | 1998-05-22 | 1998-05-22 | Civil anti-theft alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2354192Y (en) |
-
1998
- 1998-05-22 CN CN 98214509 patent/CN2354192Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2354192Y (en) | Civil anti-theft alarm | |
| CN201166894Y (en) | Anti-theft alarm device | |
| CN217157412U (en) | External damage prevention device for online monitoring of power transmission line | |
| CN2323420Y (en) | Household burglar alarm | |
| CN2203473Y (en) | Theftproof alarm safety device | |
| CN2300959Y (en) | High-intelligent theft-proof alarm device | |
| CN2583895Y (en) | Electronic alarm theft-proof handset cover | |
| CN2613838Y (en) | Theft-proof alarm device | |
| CN2127508Y (en) | Anti-theft alarm | |
| CN2227361Y (en) | Anti-theft siren for power line and transformer | |
| CN2403082Y (en) | Theft alarm | |
| CN201007835Y (en) | Anti-theft alarm of anti-theft door | |
| CN2329047Y (en) | Anti-theft alarm | |
| CN2630962Y (en) | Antitheft bell | |
| CN2302170Y (en) | Anti-theft alarmer for door of garage | |
| CN2867479Y (en) | Anti-theft alarming device | |
| CN2141389Y (en) | Multi-function box for bicycle theft-proof and alarm | |
| CN2150589Y (en) | Multiple-anti-theft self-locking alarm | |
| CN2442331Y (en) | Anti-theft alarm | |
| CN206023026U (en) | Vacuum ring main unit | |
| CN2842590Y (en) | A kind of vehicle safety burglar alarm | |
| CN2469152Y (en) | Theft-proof door having alarming device | |
| CN2466723Y (en) | Automatic theft-proof warner | |
| CN2308121Y (en) | Anti-theft alarm | |
| CN2346009Y (en) | Electronic anti-theft alarm |
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 |