CN203520542U - Antitheft alarm device - Google Patents
Antitheft alarm device Download PDFInfo
- Publication number
- CN203520542U CN203520542U CN201320703758.2U CN201320703758U CN203520542U CN 203520542 U CN203520542 U CN 203520542U CN 201320703758 U CN201320703758 U CN 201320703758U CN 203520542 U CN203520542 U CN 203520542U
- Authority
- CN
- China
- Prior art keywords
- tongue tube
- alarm
- warning circuit
- input end
- led lamp
- 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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- Burglar Alarm Systems (AREA)
Abstract
The utility model provides an antitheft alarm device, and belongs to the field of automation. The utility model aims at solving problems that existing alarm devices are complex in structure, high in manufacturing difficulty, liable to mistakenly operate and not high in reliability. The antitheft alarm device comprises a tongue tube sensor magnetically controlled switch, a Schmitt trigger, an alarm circuit, a buzzer, an LED lamp and a power supply. The tongue tube sensor magnetically controlled switch comprises a powerful magnet and a tongue tube. The tongue tube is internally provided with a pair of normally closed contacts. The powerful magnet is arranged on an internal side surface of a door frame or a window frame. The tongue tube is arranged on the internal side surface of a door body or a window body. The powerful magnet and the tongue tube are oppositely arranged. The switch command output end of the tongue tube sensor magnetically controlled switch is connected with the switch command input end of the Schmitt trigger. The alarm command output end of the Schmitt trigger is connected with the alarm command input end of the alarm circuit. The alarm circuit performs acousto-optic alarm via the buzzer and the LED lamp.
Description
Technical field
The utility model relates to burglar alarm, belongs to automatic field.
Background technology
On present society, thievery is day by day savage.Especially, when offender takes advantage of people and sleep soundly, by door and window, enter indoor committing theft.
Infra-red alarm of the prior art, its principle is to utilize while having mobile object to exist between infrared emitting and receiving trap, the luminous flux that Receiver is received changes and trigger circuit send the such principle of work work of alerting signal, and robber is as long as use an easy infrared transmitter and open it before self blocks ray, the emitting head of transmitter is aimed to the Receiver of alarm simultaneously, can make the signal that the Receiver of alarm receives not interrupt and burglary, namely the security of this alarm is not high.
Existing alarm is all generally to adopt electronic type or break type, the complex structure of this type of alarm, and manufacture difficulty is high, and easily maloperation, and reliability is not high.
Summary of the invention
The utility model object is that in order to solve, existing alarm arrangement is complicated, manufacture difficulty is high, and easily maloperation, and the problem that reliability is not high, provides a kind of burglar alarm.
Burglar alarm described in the utility model, it comprises tongue tube sensor magnetic switch, Schmidt trigger, warning circuit, hummer, LED lamp and power supply,
Tongue tube sensor magnetic switch comprises strong magnets and tongue tube, in tongue tube, be provided with a pair of normally closed contact, strong magnets is arranged on doorframe or window frame medial surface, and tongue tube is arranged on the medial surface of a body or forms, the corresponding setting in position of strong magnets and tongue tube;
The switch order output terminal of tongue tube sensor magnetic switch is connected with the switch order input end of Schmidt trigger;
The alarm command output terminal of Schmidt trigger is connected with the alarm command input end of warning circuit;
The audible alarm instruction output end of warning circuit is connected with the sound alarm command input end of hummer;
The light alarm command output terminal of warning circuit is connected with the light alarm command input end of LED lamp;
Power supply provides working power for Schmidt trigger, warning circuit, hummer and LED lamp.
Advantage of the present utility model: burglar alarm described in the utility model is simple in structure, easy for installation can be sent chimes of doom when door and window is opened, and can remind in time house owner to have people to come in, thereby play antitheft effect, and its reliability is high, and misuse rate is low.
Accompanying drawing explanation
Fig. 1 is the schematic diagram on door that is arranged on of burglar alarm described in the utility model;
Fig. 2 is the theory diagram of burglar alarm described in the utility model.
Embodiment
Embodiment one: below in conjunction with Fig. 1 and Fig. 2, present embodiment is described, burglar alarm described in present embodiment, it comprises tongue tube sensor magnetic switch 1, Schmidt trigger 2, warning circuit 3, hummer 4, LED lamp 5 and power supply 7,
Tongue tube sensor magnetic switch 1 comprises strong magnets 1-1 and tongue tube 1-2, in tongue tube 1-2, be provided with a pair of normally closed contact, strong magnets 1-1 is arranged on doorframe or window frame medial surface, tongue tube 1-2 is arranged on the medial surface of a body or forms, the corresponding setting in position of strong magnets 1-1 and tongue tube 1-2;
The switch order output terminal of tongue tube sensor magnetic switch 1 is connected with the switch order input end of Schmidt trigger 2;
The alarm command output terminal of Schmidt trigger 2 is connected with the alarm command input end of warning circuit 3;
The audible alarm instruction output end of warning circuit 3 is connected with the sound alarm command input end of hummer 4;
The light alarm command output terminal of warning circuit 3 is connected with the light alarm command input end of LED lamp 5;
Power supply 7 provides working power for Schmidt trigger 2, warning circuit 3, hummer 4 and LED lamp 5.
The alarm of present embodiment, for door window antitheft, is arranged on door or on window.Be arranged on installation diagram on door as shown in Figure 1, strong magnets 1-1 is arranged on the inner side of doorframe, on the door body inner side of correspondence position, tongue tube 1-2 is set, alarm only has strong magnets 1-1 to be arranged on doorframe, and remainder is all arranged on a body with tongue tube 1-2.
Tongue tube 1-2 selects normally closed contact, when door is during in closed condition, tongue tube 1-2 approaches strong magnets 1-1, and normally closed contact disconnects, when door is opened, door body is away from doorframe, and tongue tube 1-2 and strong magnets 1-1 are opened, and contact becomes closure state, the signal that tongue tube 1-2 out gate is opened is to Schmidt trigger 2, Schmidt trigger 2 adjusts ideal waveform, gives warning circuit 3, by warning circuit 3 output alarm instructions, carries out sound and light alarm.
After transmission, often there is wave form distortion in the rect.p. obtaining from sensor.When electric capacity on transmission line is larger, the rising edge of waveform will obviously slow down; Longer when transmission line, and when the impedance of receiving terminal and the impedance mismatch of transmission line, at rising edge and the negative edge of waveform, will produce oscillatory occurences; When other pulse signals are added to rectangular pulse signal by the distributed capacitance between wire or public power wire, on signal, additional noise will be there is.No matter there is that above-mentioned a kind of situation, can, by obtaining more satisfactory rect.p. waveform with the shaping of Schmidt's inverter trigger, receive satisfied shaping effect.
Power supply 7 is lithium battery or alkaline dry battery.
Embodiment two: present embodiment is described further embodiment one, it also comprises storer 6, the storage transmission ends of warning circuit 3 is connected with the storage transmission ends of storer 6.
Storer 6 adopts the serial storage of model 24C02.
Claims (4)
1. burglar alarm, is characterized in that, it comprises tongue tube sensor magnetic switch (1), Schmidt trigger (2), warning circuit (3), hummer (4), LED lamp (5) and power supply (7),
Tongue tube sensor magnetic switch (1) comprises strong magnets (1-1) and tongue tube (1-2), in tongue tube (1-2), be provided with a pair of normally closed contact, strong magnets (1-1) is arranged on doorframe or window frame medial surface, tongue tube (1-2) is arranged on the medial surface of a body or forms, the corresponding setting in position of strong magnets (1-1) and tongue tube (1-2);
The switch order output terminal of tongue tube sensor magnetic switch (1) is connected with the switch order input end of Schmidt trigger (2);
The alarm command output terminal of Schmidt trigger (2) is connected with the alarm command input end of warning circuit (3);
The audible alarm instruction output end of warning circuit (3) is connected with the sound alarm command input end of hummer (4);
The light alarm command output terminal of warning circuit (3) is connected with the light alarm command input end of LED lamp (5);
Power supply (7) is that Schmidt trigger (2), warning circuit (3), hummer (4) and LED lamp (5) provide working power.
2. burglar alarm according to claim 1, is characterized in that, it also comprises storer (6), and the storage transmission ends of warning circuit (3) is connected with the storage transmission ends of storer (6).
3. burglar alarm according to claim 2, is characterized in that, storer (6) adopts the serial storage of model 24C02.
4. burglar alarm according to claim 1, is characterized in that, power supply (7) is lithium battery or alkaline dry battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320703758.2U CN203520542U (en) | 2013-11-08 | 2013-11-08 | Antitheft alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320703758.2U CN203520542U (en) | 2013-11-08 | 2013-11-08 | Antitheft alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203520542U true CN203520542U (en) | 2014-04-02 |
Family
ID=50379436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320703758.2U Expired - Fee Related CN203520542U (en) | 2013-11-08 | 2013-11-08 | Antitheft alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203520542U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107093299A (en) * | 2017-06-07 | 2017-08-25 | 杨兆骅 | A kind of security window capable of automatic alarm |
-
2013
- 2013-11-08 CN CN201320703758.2U patent/CN203520542U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107093299A (en) * | 2017-06-07 | 2017-08-25 | 杨兆骅 | A kind of security window capable of automatic alarm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20171108 |